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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswload - Dispatcher namespace load callbacks | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
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 | ||
44 | ||
45 | #include <acpi/acpi.h> | |
46 | #include <acpi/acparser.h> | |
47 | #include <acpi/amlcode.h> | |
48 | #include <acpi/acdispat.h> | |
49 | #include <acpi/acinterp.h> | |
50 | #include <acpi/acnamesp.h> | |
51 | #include <acpi/acevents.h> | |
52 | ||
53 | #ifdef _ACPI_ASL_COMPILER | |
54 | #include <acpi/acdisasm.h> | |
55 | #endif | |
56 | ||
57 | #define _COMPONENT ACPI_DISPATCHER | |
58 | ACPI_MODULE_NAME ("dswload") | |
59 | ||
60 | ||
61 | /******************************************************************************* | |
62 | * | |
63 | * FUNCTION: acpi_ds_init_callbacks | |
64 | * | |
65 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
66 | * pass_number - 1, 2, or 3 | |
67 | * | |
68 | * RETURN: Status | |
69 | * | |
70 | * DESCRIPTION: Init walk state callbacks | |
71 | * | |
72 | ******************************************************************************/ | |
73 | ||
74 | acpi_status | |
75 | acpi_ds_init_callbacks ( | |
76 | struct acpi_walk_state *walk_state, | |
77 | u32 pass_number) | |
78 | { | |
79 | ||
80 | switch (pass_number) { | |
81 | case 1: | |
44f6c012 RM |
82 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
83 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
84 | walk_state->descending_callback = acpi_ds_load1_begin_op; |
85 | walk_state->ascending_callback = acpi_ds_load1_end_op; | |
86 | break; | |
87 | ||
88 | case 2: | |
44f6c012 RM |
89 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
90 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
91 | walk_state->descending_callback = acpi_ds_load2_begin_op; |
92 | walk_state->ascending_callback = acpi_ds_load2_end_op; | |
93 | break; | |
94 | ||
95 | case 3: | |
96 | #ifndef ACPI_NO_METHOD_EXECUTION | |
44f6c012 RM |
97 | walk_state->parse_flags |= ACPI_PARSE_EXECUTE | |
98 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
99 | walk_state->descending_callback = acpi_ds_exec_begin_op; |
100 | walk_state->ascending_callback = acpi_ds_exec_end_op; | |
101 | #endif | |
102 | break; | |
103 | ||
104 | default: | |
105 | return (AE_BAD_PARAMETER); | |
106 | } | |
107 | ||
108 | return (AE_OK); | |
109 | } | |
110 | ||
111 | ||
112 | /******************************************************************************* | |
113 | * | |
114 | * FUNCTION: acpi_ds_load1_begin_op | |
115 | * | |
116 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 117 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
118 | * |
119 | * RETURN: Status | |
120 | * | |
121 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
122 | * | |
123 | ******************************************************************************/ | |
124 | ||
125 | acpi_status | |
126 | acpi_ds_load1_begin_op ( | |
127 | struct acpi_walk_state *walk_state, | |
128 | union acpi_parse_object **out_op) | |
129 | { | |
130 | union acpi_parse_object *op; | |
131 | struct acpi_namespace_node *node; | |
132 | acpi_status status; | |
133 | acpi_object_type object_type; | |
134 | char *path; | |
135 | u32 flags; | |
136 | ||
137 | ||
138 | ACPI_FUNCTION_NAME ("ds_load1_begin_op"); | |
139 | ||
140 | ||
141 | op = walk_state->op; | |
142 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state)); | |
143 | ||
144 | /* We are only interested in opcodes that have an associated name */ | |
145 | ||
146 | if (op) { | |
147 | if (!(walk_state->op_info->flags & AML_NAMED)) { | |
148 | #if 0 | |
149 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
150 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { | |
44f6c012 RM |
151 | acpi_os_printf ("\n\n***EXECUTABLE OPCODE %s***\n\n", |
152 | walk_state->op_info->name); | |
1da177e4 LT |
153 | *out_op = op; |
154 | return (AE_CTRL_SKIP); | |
155 | } | |
156 | #endif | |
157 | *out_op = op; | |
158 | return (AE_OK); | |
159 | } | |
160 | ||
161 | /* Check if this object has already been installed in the namespace */ | |
162 | ||
163 | if (op->common.node) { | |
164 | *out_op = op; | |
165 | return (AE_OK); | |
166 | } | |
167 | } | |
168 | ||
169 | path = acpi_ps_get_next_namestring (&walk_state->parser_state); | |
170 | ||
171 | /* Map the raw opcode into an internal object type */ | |
172 | ||
173 | object_type = walk_state->op_info->object_type; | |
174 | ||
175 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
176 | "State=%p Op=%p [%s]\n", walk_state, op, acpi_ut_get_type_name (object_type))); | |
177 | ||
178 | switch (walk_state->opcode) { | |
179 | case AML_SCOPE_OP: | |
180 | ||
181 | /* | |
182 | * The target name of the Scope() operator must exist at this point so | |
183 | * that we can actually open the scope to enter new names underneath it. | |
184 | * Allow search-to-root for single namesegs. | |
185 | */ | |
186 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
187 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
188 | #ifdef _ACPI_ASL_COMPILER | |
189 | if (status == AE_NOT_FOUND) { | |
190 | /* | |
191 | * Table disassembly: | |
192 | * Target of Scope() not found. Generate an External for it, and | |
193 | * insert the name into the namespace. | |
194 | */ | |
195 | acpi_dm_add_to_external_list (path); | |
196 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
44f6c012 RM |
197 | ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, |
198 | walk_state, &(node)); | |
1da177e4 LT |
199 | } |
200 | #endif | |
201 | if (ACPI_FAILURE (status)) { | |
202 | ACPI_REPORT_NSERROR (path, status); | |
203 | return (status); | |
204 | } | |
205 | ||
206 | /* | |
207 | * Check to make sure that the target is | |
208 | * one of the opcodes that actually opens a scope | |
209 | */ | |
210 | switch (node->type) { | |
211 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ | |
212 | case ACPI_TYPE_DEVICE: | |
213 | case ACPI_TYPE_POWER: | |
214 | case ACPI_TYPE_PROCESSOR: | |
215 | case ACPI_TYPE_THERMAL: | |
216 | ||
217 | /* These are acceptable types */ | |
218 | break; | |
219 | ||
220 | case ACPI_TYPE_INTEGER: | |
221 | case ACPI_TYPE_STRING: | |
222 | case ACPI_TYPE_BUFFER: | |
223 | ||
224 | /* | |
225 | * These types we will allow, but we will change the type. This | |
226 | * enables some existing code of the form: | |
227 | * | |
228 | * Name (DEB, 0) | |
229 | * Scope (DEB) { ... } | |
230 | * | |
44f6c012 RM |
231 | * Note: silently change the type here. On the second pass, we will report |
232 | * a warning | |
1da177e4 LT |
233 | */ |
234 | ||
44f6c012 RM |
235 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
236 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
1da177e4 LT |
237 | path, acpi_ut_get_type_name (node->type))); |
238 | ||
239 | node->type = ACPI_TYPE_ANY; | |
240 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
241 | break; | |
242 | ||
243 | default: | |
244 | ||
245 | /* All other types are an error */ | |
246 | ||
44f6c012 RM |
247 | ACPI_REPORT_ERROR (( |
248 | "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", | |
1da177e4 LT |
249 | acpi_ut_get_type_name (node->type), path)); |
250 | ||
251 | return (AE_AML_OPERAND_TYPE); | |
252 | } | |
253 | break; | |
254 | ||
255 | ||
256 | default: | |
257 | ||
258 | /* | |
44f6c012 RM |
259 | * For all other named opcodes, we will enter the name into |
260 | * the namespace. | |
1da177e4 LT |
261 | * |
262 | * Setup the search flags. | |
263 | * Since we are entering a name into the namespace, we do not want to | |
264 | * enable the search-to-root upsearch. | |
265 | * | |
266 | * There are only two conditions where it is acceptable that the name | |
267 | * already exists: | |
268 | * 1) the Scope() operator can reopen a scoping object that was | |
269 | * previously defined (Scope, Method, Device, etc.) | |
270 | * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, | |
271 | * buffer_field, or Package), the name of the object is already | |
272 | * in the namespace. | |
273 | */ | |
274 | if (walk_state->deferred_node) { | |
275 | /* This name is already in the namespace, get the node */ | |
276 | ||
277 | node = walk_state->deferred_node; | |
278 | status = AE_OK; | |
279 | break; | |
280 | } | |
281 | ||
282 | flags = ACPI_NS_NO_UPSEARCH; | |
283 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
284 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { | |
285 | flags |= ACPI_NS_ERROR_IF_FOUND; | |
286 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", | |
287 | acpi_ut_get_type_name (object_type))); | |
288 | } | |
289 | else { | |
44f6c012 RM |
290 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
291 | "[%s] Both Find or Create allowed\n", | |
1da177e4 LT |
292 | acpi_ut_get_type_name (object_type))); |
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 LT |
300 | */ |
301 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
302 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, &(node)); | |
303 | if (ACPI_FAILURE (status)) { | |
304 | ACPI_REPORT_NSERROR (path, status); | |
305 | return (status); | |
306 | } | |
307 | break; | |
308 | } | |
309 | ||
310 | ||
311 | /* Common exit */ | |
312 | ||
313 | if (!op) { | |
314 | /* Create a new op */ | |
315 | ||
316 | op = acpi_ps_alloc_op (walk_state->opcode); | |
317 | if (!op) { | |
318 | return (AE_NO_MEMORY); | |
319 | } | |
320 | } | |
321 | ||
322 | /* Initialize */ | |
323 | ||
324 | op->named.name = node->name.integer; | |
325 | ||
326 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
327 | op->named.path = (u8 *) path; | |
328 | #endif | |
329 | ||
330 | ||
331 | /* | |
332 | * Put the Node in the "op" object that the parser uses, so we | |
333 | * can get it again quickly when this scope is closed | |
334 | */ | |
335 | op->common.node = node; | |
336 | acpi_ps_append_arg (acpi_ps_get_parent_scope (&walk_state->parser_state), op); | |
337 | ||
338 | *out_op = op; | |
339 | return (status); | |
340 | } | |
341 | ||
342 | ||
343 | /******************************************************************************* | |
344 | * | |
345 | * FUNCTION: acpi_ds_load1_end_op | |
346 | * | |
347 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
348 | * |
349 | * RETURN: Status | |
350 | * | |
351 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
352 | * both control methods and everything else. | |
353 | * | |
354 | ******************************************************************************/ | |
355 | ||
356 | acpi_status | |
357 | acpi_ds_load1_end_op ( | |
358 | struct acpi_walk_state *walk_state) | |
359 | { | |
360 | union acpi_parse_object *op; | |
361 | acpi_object_type object_type; | |
362 | acpi_status status = AE_OK; | |
363 | ||
364 | ||
365 | ACPI_FUNCTION_NAME ("ds_load1_end_op"); | |
366 | ||
367 | ||
368 | op = walk_state->op; | |
369 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state)); | |
370 | ||
371 | /* We are only interested in opcodes that have an associated name */ | |
372 | ||
373 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
374 | return (AE_OK); | |
375 | } | |
376 | ||
377 | /* Get the object type to determine if we should pop the scope */ | |
378 | ||
379 | object_type = walk_state->op_info->object_type; | |
380 | ||
381 | #ifndef ACPI_NO_METHOD_EXECUTION | |
382 | if (walk_state->op_info->flags & AML_FIELD) { | |
383 | if (walk_state->opcode == AML_FIELD_OP || | |
384 | walk_state->opcode == AML_BANK_FIELD_OP || | |
385 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
386 | status = acpi_ds_init_field_objects (op, walk_state); | |
387 | } | |
388 | return (status); | |
389 | } | |
390 | ||
391 | ||
392 | if (op->common.aml_opcode == AML_REGION_OP) { | |
393 | status = acpi_ex_create_region (op->named.data, op->named.length, | |
44f6c012 RM |
394 | (acpi_adr_space_type) |
395 | ((op->common.value.arg)->common.value.integer), | |
396 | walk_state); | |
1da177e4 LT |
397 | if (ACPI_FAILURE (status)) { |
398 | return (status); | |
399 | } | |
400 | } | |
401 | #endif | |
402 | ||
403 | if (op->common.aml_opcode == AML_NAME_OP) { | |
404 | /* For Name opcode, get the object type from the argument */ | |
405 | ||
406 | if (op->common.value.arg) { | |
44f6c012 RM |
407 | object_type = (acpi_ps_get_opcode_info ( |
408 | (op->common.value.arg)->common.aml_opcode))->object_type; | |
1da177e4 LT |
409 | op->common.node->type = (u8) object_type; |
410 | } | |
411 | } | |
412 | ||
413 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
414 | /* | |
415 | * method_op pkg_length name_string method_flags term_list | |
416 | * | |
417 | * Note: We must create the method node/object pair as soon as we | |
418 | * see the method declaration. This allows later pass1 parsing | |
419 | * of invocations of the method (need to know the number of | |
420 | * arguments.) | |
421 | */ | |
422 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
423 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
424 | walk_state, op, op->named.node)); | |
425 | ||
426 | if (!acpi_ns_get_attached_object (op->named.node)) { | |
427 | walk_state->operands[0] = (void *) op->named.node; | |
428 | walk_state->num_operands = 1; | |
429 | ||
430 | status = acpi_ds_create_operands (walk_state, op->common.value.arg); | |
431 | if (ACPI_SUCCESS (status)) { | |
432 | status = acpi_ex_create_method (op->named.data, | |
433 | op->named.length, walk_state); | |
434 | } | |
435 | walk_state->operands[0] = NULL; | |
436 | walk_state->num_operands = 0; | |
437 | ||
438 | if (ACPI_FAILURE (status)) { | |
439 | return (status); | |
440 | } | |
441 | } | |
442 | } | |
443 | ||
444 | /* Pop the scope stack */ | |
445 | ||
446 | if (acpi_ns_opens_scope (object_type)) { | |
447 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", | |
448 | acpi_ut_get_type_name (object_type), op)); | |
449 | ||
450 | status = acpi_ds_scope_stack_pop (walk_state); | |
451 | } | |
452 | ||
453 | return (status); | |
454 | } | |
455 | ||
456 | ||
457 | /******************************************************************************* | |
458 | * | |
459 | * FUNCTION: acpi_ds_load2_begin_op | |
460 | * | |
461 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 462 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
463 | * |
464 | * RETURN: Status | |
465 | * | |
466 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
467 | * | |
468 | ******************************************************************************/ | |
469 | ||
470 | acpi_status | |
471 | acpi_ds_load2_begin_op ( | |
472 | struct acpi_walk_state *walk_state, | |
473 | union acpi_parse_object **out_op) | |
474 | { | |
475 | union acpi_parse_object *op; | |
476 | struct acpi_namespace_node *node; | |
477 | acpi_status status; | |
478 | acpi_object_type object_type; | |
479 | char *buffer_ptr; | |
480 | ||
481 | ||
482 | ACPI_FUNCTION_TRACE ("ds_load2_begin_op"); | |
483 | ||
484 | ||
485 | op = walk_state->op; | |
486 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state)); | |
487 | ||
488 | if (op) { | |
489 | /* We only care about Namespace opcodes here */ | |
490 | ||
44f6c012 RM |
491 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && |
492 | (walk_state->opcode != AML_INT_NAMEPATH_OP)) || | |
1da177e4 LT |
493 | (!(walk_state->op_info->flags & AML_NAMED))) { |
494 | return_ACPI_STATUS (AE_OK); | |
495 | } | |
496 | ||
44f6c012 RM |
497 | /* Get the name we are going to enter or lookup in the namespace */ |
498 | ||
1da177e4 LT |
499 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
500 | /* For Namepath op, get the path string */ | |
501 | ||
502 | buffer_ptr = op->common.value.string; | |
503 | if (!buffer_ptr) { | |
504 | /* No name, just exit */ | |
505 | ||
506 | return_ACPI_STATUS (AE_OK); | |
507 | } | |
508 | } | |
509 | else { | |
510 | /* Get name from the op */ | |
511 | ||
512 | buffer_ptr = (char *) &op->named.name; | |
513 | } | |
514 | } | |
515 | else { | |
516 | /* Get the namestring from the raw AML */ | |
517 | ||
518 | buffer_ptr = acpi_ps_get_next_namestring (&walk_state->parser_state); | |
519 | } | |
520 | ||
521 | /* Map the opcode into an internal object type */ | |
522 | ||
523 | object_type = walk_state->op_info->object_type; | |
524 | ||
525 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
526 | "State=%p Op=%p Type=%X\n", walk_state, op, object_type)); | |
527 | ||
528 | ||
529 | switch (walk_state->opcode) { | |
530 | case AML_FIELD_OP: | |
531 | case AML_BANK_FIELD_OP: | |
532 | case AML_INDEX_FIELD_OP: | |
533 | ||
534 | node = NULL; | |
535 | status = AE_OK; | |
536 | break; | |
537 | ||
538 | case AML_INT_NAMEPATH_OP: | |
539 | ||
540 | /* | |
44f6c012 RM |
541 | * The name_path is an object reference to an existing object. |
542 | * Don't enter the name into the namespace, but look it up | |
543 | * for use later. | |
1da177e4 LT |
544 | */ |
545 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, | |
44f6c012 RM |
546 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
547 | walk_state, &(node)); | |
1da177e4 LT |
548 | break; |
549 | ||
550 | case AML_SCOPE_OP: | |
551 | ||
552 | /* | |
44f6c012 RM |
553 | * The Path is an object reference to an existing object. |
554 | * Don't enter the name into the namespace, but look it up | |
555 | * for use later. | |
1da177e4 LT |
556 | */ |
557 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, | |
44f6c012 RM |
558 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
559 | walk_state, &(node)); | |
1da177e4 LT |
560 | if (ACPI_FAILURE (status)) { |
561 | #ifdef _ACPI_ASL_COMPILER | |
562 | if (status == AE_NOT_FOUND) { | |
563 | status = AE_OK; | |
564 | } | |
565 | else { | |
566 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
567 | } | |
568 | #else | |
569 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
570 | #endif | |
571 | return_ACPI_STATUS (status); | |
572 | } | |
573 | /* | |
574 | * We must check to make sure that the target is | |
575 | * one of the opcodes that actually opens a scope | |
576 | */ | |
577 | switch (node->type) { | |
578 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ | |
579 | case ACPI_TYPE_DEVICE: | |
580 | case ACPI_TYPE_POWER: | |
581 | case ACPI_TYPE_PROCESSOR: | |
582 | case ACPI_TYPE_THERMAL: | |
583 | ||
584 | /* These are acceptable types */ | |
585 | break; | |
586 | ||
587 | case ACPI_TYPE_INTEGER: | |
588 | case ACPI_TYPE_STRING: | |
589 | case ACPI_TYPE_BUFFER: | |
590 | ||
591 | /* | |
592 | * These types we will allow, but we will change the type. This | |
593 | * enables some existing code of the form: | |
594 | * | |
595 | * Name (DEB, 0) | |
596 | * Scope (DEB) { ... } | |
597 | */ | |
598 | ||
44f6c012 RM |
599 | ACPI_REPORT_WARNING (( |
600 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
1da177e4 LT |
601 | buffer_ptr, acpi_ut_get_type_name (node->type))); |
602 | ||
603 | node->type = ACPI_TYPE_ANY; | |
604 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
605 | break; | |
606 | ||
607 | default: | |
608 | ||
609 | /* All other types are an error */ | |
610 | ||
44f6c012 RM |
611 | ACPI_REPORT_ERROR (( |
612 | "Invalid type (%s) for target of Scope operator [%4.4s]\n", | |
1da177e4 LT |
613 | acpi_ut_get_type_name (node->type), buffer_ptr)); |
614 | ||
615 | return (AE_AML_OPERAND_TYPE); | |
616 | } | |
617 | break; | |
618 | ||
619 | default: | |
620 | ||
621 | /* All other opcodes */ | |
622 | ||
623 | if (op && op->common.node) { | |
624 | /* This op/node was previously entered into the namespace */ | |
625 | ||
626 | node = op->common.node; | |
627 | ||
628 | if (acpi_ns_opens_scope (object_type)) { | |
629 | status = acpi_ds_scope_stack_push (node, object_type, walk_state); | |
630 | if (ACPI_FAILURE (status)) { | |
631 | return_ACPI_STATUS (status); | |
632 | } | |
633 | ||
634 | } | |
635 | return_ACPI_STATUS (AE_OK); | |
636 | } | |
637 | ||
638 | /* | |
639 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
640 | * as we go downward in the parse tree. Any necessary subobjects that |
641 | * involve arguments to the opcode must be created as we go back up the | |
642 | * parse tree later. | |
1da177e4 LT |
643 | * |
644 | * Note: Name may already exist if we are executing a deferred opcode. | |
645 | */ | |
646 | if (walk_state->deferred_node) { | |
647 | /* This name is already in the namespace, get the node */ | |
648 | ||
649 | node = walk_state->deferred_node; | |
650 | status = AE_OK; | |
651 | break; | |
652 | } | |
653 | ||
654 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, | |
44f6c012 RM |
655 | ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, |
656 | walk_state, &(node)); | |
1da177e4 LT |
657 | break; |
658 | } | |
659 | ||
660 | if (ACPI_FAILURE (status)) { | |
661 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
662 | return_ACPI_STATUS (status); | |
663 | } | |
664 | ||
665 | ||
666 | if (!op) { | |
667 | /* Create a new op */ | |
668 | ||
669 | op = acpi_ps_alloc_op (walk_state->opcode); | |
670 | if (!op) { | |
671 | return_ACPI_STATUS (AE_NO_MEMORY); | |
672 | } | |
673 | ||
674 | /* Initialize the new op */ | |
675 | ||
676 | if (node) { | |
677 | op->named.name = node->name.integer; | |
678 | } | |
679 | if (out_op) { | |
680 | *out_op = op; | |
681 | } | |
682 | } | |
683 | ||
684 | /* | |
685 | * Put the Node in the "op" object that the parser uses, so we | |
686 | * can get it again quickly when this scope is closed | |
687 | */ | |
688 | op->common.node = node; | |
689 | ||
690 | return_ACPI_STATUS (status); | |
691 | } | |
692 | ||
693 | ||
694 | /******************************************************************************* | |
695 | * | |
696 | * FUNCTION: acpi_ds_load2_end_op | |
697 | * | |
698 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
699 | * |
700 | * RETURN: Status | |
701 | * | |
702 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
703 | * both control methods and everything else. | |
704 | * | |
705 | ******************************************************************************/ | |
706 | ||
707 | acpi_status | |
708 | acpi_ds_load2_end_op ( | |
709 | struct acpi_walk_state *walk_state) | |
710 | { | |
711 | union acpi_parse_object *op; | |
712 | acpi_status status = AE_OK; | |
713 | acpi_object_type object_type; | |
714 | struct acpi_namespace_node *node; | |
715 | union acpi_parse_object *arg; | |
716 | struct acpi_namespace_node *new_node; | |
717 | #ifndef ACPI_NO_METHOD_EXECUTION | |
718 | u32 i; | |
719 | #endif | |
720 | ||
721 | ||
722 | ACPI_FUNCTION_TRACE ("ds_load2_end_op"); | |
723 | ||
724 | op = walk_state->op; | |
725 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", | |
726 | walk_state->op_info->name, op, walk_state)); | |
727 | ||
728 | /* Only interested in opcodes that have namespace objects */ | |
729 | ||
730 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
731 | return_ACPI_STATUS (AE_OK); | |
732 | } | |
733 | ||
734 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
735 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
736 | "Ending scope Op=%p State=%p\n", op, walk_state)); | |
737 | } | |
738 | ||
739 | ||
740 | object_type = walk_state->op_info->object_type; | |
741 | ||
742 | /* | |
743 | * Get the Node/name from the earlier lookup | |
744 | * (It was saved in the *op structure) | |
745 | */ | |
746 | node = op->common.node; | |
747 | ||
748 | /* | |
749 | * Put the Node on the object stack (Contains the ACPI Name of | |
750 | * this object) | |
751 | */ | |
752 | walk_state->operands[0] = (void *) node; | |
753 | walk_state->num_operands = 1; | |
754 | ||
755 | /* Pop the scope stack */ | |
756 | ||
44f6c012 RM |
757 | if (acpi_ns_opens_scope (object_type) && |
758 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
1da177e4 LT |
759 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", |
760 | acpi_ut_get_type_name (object_type), op)); | |
761 | ||
762 | status = acpi_ds_scope_stack_pop (walk_state); | |
763 | if (ACPI_FAILURE (status)) { | |
764 | goto cleanup; | |
765 | } | |
766 | } | |
767 | ||
768 | /* | |
769 | * Named operations are as follows: | |
770 | * | |
771 | * AML_ALIAS | |
772 | * AML_BANKFIELD | |
773 | * AML_CREATEBITFIELD | |
774 | * AML_CREATEBYTEFIELD | |
775 | * AML_CREATEDWORDFIELD | |
776 | * AML_CREATEFIELD | |
777 | * AML_CREATEQWORDFIELD | |
778 | * AML_CREATEWORDFIELD | |
779 | * AML_DATA_REGION | |
780 | * AML_DEVICE | |
781 | * AML_EVENT | |
782 | * AML_FIELD | |
783 | * AML_INDEXFIELD | |
784 | * AML_METHOD | |
785 | * AML_METHODCALL | |
786 | * AML_MUTEX | |
787 | * AML_NAME | |
788 | * AML_NAMEDFIELD | |
789 | * AML_OPREGION | |
790 | * AML_POWERRES | |
791 | * AML_PROCESSOR | |
792 | * AML_SCOPE | |
793 | * AML_THERMALZONE | |
794 | */ | |
795 | ||
796 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
797 | "Create-Load [%s] State=%p Op=%p named_obj=%p\n", | |
798 | acpi_ps_get_opcode_name (op->common.aml_opcode), walk_state, op, node)); | |
799 | ||
800 | /* Decode the opcode */ | |
801 | ||
802 | arg = op->common.value.arg; | |
803 | ||
804 | switch (walk_state->op_info->type) { | |
805 | #ifndef ACPI_NO_METHOD_EXECUTION | |
806 | ||
807 | case AML_TYPE_CREATE_FIELD: | |
808 | ||
809 | /* | |
810 | * Create the field object, but the field buffer and index must | |
811 | * be evaluated later during the execution phase | |
812 | */ | |
813 | status = acpi_ds_create_buffer_field (op, walk_state); | |
814 | break; | |
815 | ||
816 | ||
817 | case AML_TYPE_NAMED_FIELD: | |
818 | ||
819 | switch (op->common.aml_opcode) { | |
820 | case AML_INDEX_FIELD_OP: | |
821 | ||
822 | status = acpi_ds_create_index_field (op, (acpi_handle) arg->common.node, | |
44f6c012 | 823 | walk_state); |
1da177e4 LT |
824 | break; |
825 | ||
826 | case AML_BANK_FIELD_OP: | |
827 | ||
828 | status = acpi_ds_create_bank_field (op, arg->common.node, walk_state); | |
829 | break; | |
830 | ||
831 | case AML_FIELD_OP: | |
832 | ||
833 | status = acpi_ds_create_field (op, arg->common.node, walk_state); | |
834 | break; | |
835 | ||
836 | default: | |
837 | /* All NAMED_FIELD opcodes must be handled above */ | |
838 | break; | |
839 | } | |
840 | break; | |
841 | ||
842 | ||
843 | case AML_TYPE_NAMED_SIMPLE: | |
844 | ||
845 | status = acpi_ds_create_operands (walk_state, arg); | |
846 | if (ACPI_FAILURE (status)) { | |
847 | goto cleanup; | |
848 | } | |
849 | ||
850 | switch (op->common.aml_opcode) { | |
851 | case AML_PROCESSOR_OP: | |
852 | ||
853 | status = acpi_ex_create_processor (walk_state); | |
854 | break; | |
855 | ||
856 | case AML_POWER_RES_OP: | |
857 | ||
858 | status = acpi_ex_create_power_resource (walk_state); | |
859 | break; | |
860 | ||
861 | case AML_MUTEX_OP: | |
862 | ||
863 | status = acpi_ex_create_mutex (walk_state); | |
864 | break; | |
865 | ||
866 | case AML_EVENT_OP: | |
867 | ||
868 | status = acpi_ex_create_event (walk_state); | |
869 | break; | |
870 | ||
871 | case AML_DATA_REGION_OP: | |
872 | ||
873 | status = acpi_ex_create_table_region (walk_state); | |
874 | break; | |
875 | ||
876 | case AML_ALIAS_OP: | |
877 | ||
878 | status = acpi_ex_create_alias (walk_state); | |
879 | break; | |
880 | ||
881 | default: | |
882 | /* Unknown opcode */ | |
883 | ||
884 | status = AE_OK; | |
885 | goto cleanup; | |
886 | } | |
887 | ||
888 | /* Delete operands */ | |
889 | ||
890 | for (i = 1; i < walk_state->num_operands; i++) { | |
891 | acpi_ut_remove_reference (walk_state->operands[i]); | |
892 | walk_state->operands[i] = NULL; | |
893 | } | |
894 | ||
895 | break; | |
896 | #endif /* ACPI_NO_METHOD_EXECUTION */ | |
897 | ||
898 | case AML_TYPE_NAMED_COMPLEX: | |
899 | ||
900 | switch (op->common.aml_opcode) { | |
901 | #ifndef ACPI_NO_METHOD_EXECUTION | |
902 | case AML_REGION_OP: | |
903 | /* | |
44f6c012 RM |
904 | * The op_region is not fully parsed at this time. Only valid |
905 | * argument is the space_id. (We must save the address of the | |
906 | * AML of the address and length operands) | |
1da177e4 LT |
907 | */ |
908 | /* | |
909 | * If we have a valid region, initialize it | |
910 | * Namespace is NOT locked at this point. | |
911 | */ | |
44f6c012 RM |
912 | status = acpi_ev_initialize_region (acpi_ns_get_attached_object (node), |
913 | FALSE); | |
1da177e4 LT |
914 | if (ACPI_FAILURE (status)) { |
915 | /* | |
916 | * If AE_NOT_EXIST is returned, it is not fatal | |
917 | * because many regions get created before a handler | |
918 | * is installed for said region. | |
919 | */ | |
920 | if (AE_NOT_EXIST == status) { | |
921 | status = AE_OK; | |
922 | } | |
923 | } | |
924 | break; | |
925 | ||
926 | ||
927 | case AML_NAME_OP: | |
928 | ||
929 | status = acpi_ds_create_node (walk_state, node, op); | |
930 | break; | |
931 | #endif /* ACPI_NO_METHOD_EXECUTION */ | |
932 | ||
933 | ||
934 | default: | |
935 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
936 | /* Note: Method objects were already created in Pass 1 */ | |
937 | break; | |
938 | } | |
939 | break; | |
940 | ||
941 | ||
942 | case AML_CLASS_INTERNAL: | |
943 | ||
944 | /* case AML_INT_NAMEPATH_OP: */ | |
945 | break; | |
946 | ||
947 | ||
948 | case AML_CLASS_METHOD_CALL: | |
949 | ||
950 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
951 | "RESOLVING-method_call: State=%p Op=%p named_obj=%p\n", | |
952 | walk_state, op, node)); | |
953 | ||
954 | /* | |
955 | * Lookup the method name and save the Node | |
956 | */ | |
957 | status = acpi_ns_lookup (walk_state->scope_info, arg->common.value.string, | |
958 | ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, | |
959 | ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, | |
960 | walk_state, &(new_node)); | |
961 | if (ACPI_SUCCESS (status)) { | |
962 | /* | |
963 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
964 | * We didn't search for a method on purpose, to see if the name |
965 | * would resolve | |
1da177e4 LT |
966 | */ |
967 | if (new_node->type != ACPI_TYPE_METHOD) { | |
968 | status = AE_AML_OPERAND_TYPE; | |
969 | } | |
970 | ||
44f6c012 RM |
971 | /* We could put the returned object (Node) on the object stack for |
972 | * later, but for now, we will put it in the "op" object that the | |
973 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
974 | */ |
975 | op->common.node = new_node; | |
976 | } | |
977 | else { | |
978 | ACPI_REPORT_NSERROR (arg->common.value.string, status); | |
979 | } | |
980 | break; | |
981 | ||
982 | ||
983 | default: | |
984 | break; | |
985 | } | |
986 | ||
987 | cleanup: | |
988 | ||
989 | /* Remove the Node pushed at the very beginning */ | |
990 | ||
991 | walk_state->operands[0] = NULL; | |
992 | walk_state->num_operands = 0; | |
993 | return_ACPI_STATUS (status); | |
994 | } | |
995 | ||
996 |