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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: | |
82 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE; | |
83 | walk_state->descending_callback = acpi_ds_load1_begin_op; | |
84 | walk_state->ascending_callback = acpi_ds_load1_end_op; | |
85 | break; | |
86 | ||
87 | case 2: | |
88 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE; | |
89 | walk_state->descending_callback = acpi_ds_load2_begin_op; | |
90 | walk_state->ascending_callback = acpi_ds_load2_end_op; | |
91 | break; | |
92 | ||
93 | case 3: | |
94 | #ifndef ACPI_NO_METHOD_EXECUTION | |
95 | walk_state->parse_flags |= ACPI_PARSE_EXECUTE | ACPI_PARSE_DELETE_TREE; | |
96 | walk_state->descending_callback = acpi_ds_exec_begin_op; | |
97 | walk_state->ascending_callback = acpi_ds_exec_end_op; | |
98 | #endif | |
99 | break; | |
100 | ||
101 | default: | |
102 | return (AE_BAD_PARAMETER); | |
103 | } | |
104 | ||
105 | return (AE_OK); | |
106 | } | |
107 | ||
108 | ||
109 | /******************************************************************************* | |
110 | * | |
111 | * FUNCTION: acpi_ds_load1_begin_op | |
112 | * | |
113 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
114 | * Op - Op that has been just been reached in the | |
115 | * walk; Arguments have not been evaluated yet. | |
116 | * | |
117 | * RETURN: Status | |
118 | * | |
119 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
120 | * | |
121 | ******************************************************************************/ | |
122 | ||
123 | acpi_status | |
124 | acpi_ds_load1_begin_op ( | |
125 | struct acpi_walk_state *walk_state, | |
126 | union acpi_parse_object **out_op) | |
127 | { | |
128 | union acpi_parse_object *op; | |
129 | struct acpi_namespace_node *node; | |
130 | acpi_status status; | |
131 | acpi_object_type object_type; | |
132 | char *path; | |
133 | u32 flags; | |
134 | ||
135 | ||
136 | ACPI_FUNCTION_NAME ("ds_load1_begin_op"); | |
137 | ||
138 | ||
139 | op = walk_state->op; | |
140 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state)); | |
141 | ||
142 | /* We are only interested in opcodes that have an associated name */ | |
143 | ||
144 | if (op) { | |
145 | if (!(walk_state->op_info->flags & AML_NAMED)) { | |
146 | #if 0 | |
147 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
148 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { | |
149 | acpi_os_printf ("\n\n***EXECUTABLE OPCODE %s***\n\n", walk_state->op_info->name); | |
150 | *out_op = op; | |
151 | return (AE_CTRL_SKIP); | |
152 | } | |
153 | #endif | |
154 | *out_op = op; | |
155 | return (AE_OK); | |
156 | } | |
157 | ||
158 | /* Check if this object has already been installed in the namespace */ | |
159 | ||
160 | if (op->common.node) { | |
161 | *out_op = op; | |
162 | return (AE_OK); | |
163 | } | |
164 | } | |
165 | ||
166 | path = acpi_ps_get_next_namestring (&walk_state->parser_state); | |
167 | ||
168 | /* Map the raw opcode into an internal object type */ | |
169 | ||
170 | object_type = walk_state->op_info->object_type; | |
171 | ||
172 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
173 | "State=%p Op=%p [%s]\n", walk_state, op, acpi_ut_get_type_name (object_type))); | |
174 | ||
175 | switch (walk_state->opcode) { | |
176 | case AML_SCOPE_OP: | |
177 | ||
178 | /* | |
179 | * The target name of the Scope() operator must exist at this point so | |
180 | * that we can actually open the scope to enter new names underneath it. | |
181 | * Allow search-to-root for single namesegs. | |
182 | */ | |
183 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
184 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
185 | #ifdef _ACPI_ASL_COMPILER | |
186 | if (status == AE_NOT_FOUND) { | |
187 | /* | |
188 | * Table disassembly: | |
189 | * Target of Scope() not found. Generate an External for it, and | |
190 | * insert the name into the namespace. | |
191 | */ | |
192 | acpi_dm_add_to_external_list (path); | |
193 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
194 | ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
195 | } | |
196 | #endif | |
197 | if (ACPI_FAILURE (status)) { | |
198 | ACPI_REPORT_NSERROR (path, status); | |
199 | return (status); | |
200 | } | |
201 | ||
202 | /* | |
203 | * Check to make sure that the target is | |
204 | * one of the opcodes that actually opens a scope | |
205 | */ | |
206 | switch (node->type) { | |
207 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ | |
208 | case ACPI_TYPE_DEVICE: | |
209 | case ACPI_TYPE_POWER: | |
210 | case ACPI_TYPE_PROCESSOR: | |
211 | case ACPI_TYPE_THERMAL: | |
212 | ||
213 | /* These are acceptable types */ | |
214 | break; | |
215 | ||
216 | case ACPI_TYPE_INTEGER: | |
217 | case ACPI_TYPE_STRING: | |
218 | case ACPI_TYPE_BUFFER: | |
219 | ||
220 | /* | |
221 | * These types we will allow, but we will change the type. This | |
222 | * enables some existing code of the form: | |
223 | * | |
224 | * Name (DEB, 0) | |
225 | * Scope (DEB) { ... } | |
226 | * | |
227 | * Note: silently change the type here. On the second pass, we will report a warning | |
228 | */ | |
229 | ||
230 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
231 | path, acpi_ut_get_type_name (node->type))); | |
232 | ||
233 | node->type = ACPI_TYPE_ANY; | |
234 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
235 | break; | |
236 | ||
237 | default: | |
238 | ||
239 | /* All other types are an error */ | |
240 | ||
241 | ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", | |
242 | acpi_ut_get_type_name (node->type), path)); | |
243 | ||
244 | return (AE_AML_OPERAND_TYPE); | |
245 | } | |
246 | break; | |
247 | ||
248 | ||
249 | default: | |
250 | ||
251 | /* | |
252 | * For all other named opcodes, we will enter the name into the namespace. | |
253 | * | |
254 | * Setup the search flags. | |
255 | * Since we are entering a name into the namespace, we do not want to | |
256 | * enable the search-to-root upsearch. | |
257 | * | |
258 | * There are only two conditions where it is acceptable that the name | |
259 | * already exists: | |
260 | * 1) the Scope() operator can reopen a scoping object that was | |
261 | * previously defined (Scope, Method, Device, etc.) | |
262 | * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, | |
263 | * buffer_field, or Package), the name of the object is already | |
264 | * in the namespace. | |
265 | */ | |
266 | if (walk_state->deferred_node) { | |
267 | /* This name is already in the namespace, get the node */ | |
268 | ||
269 | node = walk_state->deferred_node; | |
270 | status = AE_OK; | |
271 | break; | |
272 | } | |
273 | ||
274 | flags = ACPI_NS_NO_UPSEARCH; | |
275 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
276 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { | |
277 | flags |= ACPI_NS_ERROR_IF_FOUND; | |
278 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", | |
279 | acpi_ut_get_type_name (object_type))); | |
280 | } | |
281 | else { | |
282 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Both Find or Create allowed\n", | |
283 | acpi_ut_get_type_name (object_type))); | |
284 | } | |
285 | ||
286 | /* | |
287 | * Enter the named type into the internal namespace. We enter the name | |
288 | * as we go downward in the parse tree. Any necessary subobjects that involve | |
289 | * arguments to the opcode must be created as we go back up the parse tree later. | |
290 | */ | |
291 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
292 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, &(node)); | |
293 | if (ACPI_FAILURE (status)) { | |
294 | ACPI_REPORT_NSERROR (path, status); | |
295 | return (status); | |
296 | } | |
297 | break; | |
298 | } | |
299 | ||
300 | ||
301 | /* Common exit */ | |
302 | ||
303 | if (!op) { | |
304 | /* Create a new op */ | |
305 | ||
306 | op = acpi_ps_alloc_op (walk_state->opcode); | |
307 | if (!op) { | |
308 | return (AE_NO_MEMORY); | |
309 | } | |
310 | } | |
311 | ||
312 | /* Initialize */ | |
313 | ||
314 | op->named.name = node->name.integer; | |
315 | ||
316 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
317 | op->named.path = (u8 *) path; | |
318 | #endif | |
319 | ||
320 | ||
321 | /* | |
322 | * Put the Node in the "op" object that the parser uses, so we | |
323 | * can get it again quickly when this scope is closed | |
324 | */ | |
325 | op->common.node = node; | |
326 | acpi_ps_append_arg (acpi_ps_get_parent_scope (&walk_state->parser_state), op); | |
327 | ||
328 | *out_op = op; | |
329 | return (status); | |
330 | } | |
331 | ||
332 | ||
333 | /******************************************************************************* | |
334 | * | |
335 | * FUNCTION: acpi_ds_load1_end_op | |
336 | * | |
337 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
338 | * Op - Op that has been just been completed in the | |
339 | * walk; Arguments have now been evaluated. | |
340 | * | |
341 | * RETURN: Status | |
342 | * | |
343 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
344 | * both control methods and everything else. | |
345 | * | |
346 | ******************************************************************************/ | |
347 | ||
348 | acpi_status | |
349 | acpi_ds_load1_end_op ( | |
350 | struct acpi_walk_state *walk_state) | |
351 | { | |
352 | union acpi_parse_object *op; | |
353 | acpi_object_type object_type; | |
354 | acpi_status status = AE_OK; | |
355 | ||
356 | ||
357 | ACPI_FUNCTION_NAME ("ds_load1_end_op"); | |
358 | ||
359 | ||
360 | op = walk_state->op; | |
361 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state)); | |
362 | ||
363 | /* We are only interested in opcodes that have an associated name */ | |
364 | ||
365 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
366 | return (AE_OK); | |
367 | } | |
368 | ||
369 | /* Get the object type to determine if we should pop the scope */ | |
370 | ||
371 | object_type = walk_state->op_info->object_type; | |
372 | ||
373 | #ifndef ACPI_NO_METHOD_EXECUTION | |
374 | if (walk_state->op_info->flags & AML_FIELD) { | |
375 | if (walk_state->opcode == AML_FIELD_OP || | |
376 | walk_state->opcode == AML_BANK_FIELD_OP || | |
377 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
378 | status = acpi_ds_init_field_objects (op, walk_state); | |
379 | } | |
380 | return (status); | |
381 | } | |
382 | ||
383 | ||
384 | if (op->common.aml_opcode == AML_REGION_OP) { | |
385 | status = acpi_ex_create_region (op->named.data, op->named.length, | |
386 | (acpi_adr_space_type) ((op->common.value.arg)->common.value.integer), walk_state); | |
387 | if (ACPI_FAILURE (status)) { | |
388 | return (status); | |
389 | } | |
390 | } | |
391 | #endif | |
392 | ||
393 | if (op->common.aml_opcode == AML_NAME_OP) { | |
394 | /* For Name opcode, get the object type from the argument */ | |
395 | ||
396 | if (op->common.value.arg) { | |
397 | object_type = (acpi_ps_get_opcode_info ((op->common.value.arg)->common.aml_opcode))->object_type; | |
398 | op->common.node->type = (u8) object_type; | |
399 | } | |
400 | } | |
401 | ||
402 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
403 | /* | |
404 | * method_op pkg_length name_string method_flags term_list | |
405 | * | |
406 | * Note: We must create the method node/object pair as soon as we | |
407 | * see the method declaration. This allows later pass1 parsing | |
408 | * of invocations of the method (need to know the number of | |
409 | * arguments.) | |
410 | */ | |
411 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
412 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
413 | walk_state, op, op->named.node)); | |
414 | ||
415 | if (!acpi_ns_get_attached_object (op->named.node)) { | |
416 | walk_state->operands[0] = (void *) op->named.node; | |
417 | walk_state->num_operands = 1; | |
418 | ||
419 | status = acpi_ds_create_operands (walk_state, op->common.value.arg); | |
420 | if (ACPI_SUCCESS (status)) { | |
421 | status = acpi_ex_create_method (op->named.data, | |
422 | op->named.length, walk_state); | |
423 | } | |
424 | walk_state->operands[0] = NULL; | |
425 | walk_state->num_operands = 0; | |
426 | ||
427 | if (ACPI_FAILURE (status)) { | |
428 | return (status); | |
429 | } | |
430 | } | |
431 | } | |
432 | ||
433 | /* Pop the scope stack */ | |
434 | ||
435 | if (acpi_ns_opens_scope (object_type)) { | |
436 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", | |
437 | acpi_ut_get_type_name (object_type), op)); | |
438 | ||
439 | status = acpi_ds_scope_stack_pop (walk_state); | |
440 | } | |
441 | ||
442 | return (status); | |
443 | } | |
444 | ||
445 | ||
446 | /******************************************************************************* | |
447 | * | |
448 | * FUNCTION: acpi_ds_load2_begin_op | |
449 | * | |
450 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
451 | * Op - Op that has been just been reached in the | |
452 | * walk; Arguments have not been evaluated yet. | |
453 | * | |
454 | * RETURN: Status | |
455 | * | |
456 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
457 | * | |
458 | ******************************************************************************/ | |
459 | ||
460 | acpi_status | |
461 | acpi_ds_load2_begin_op ( | |
462 | struct acpi_walk_state *walk_state, | |
463 | union acpi_parse_object **out_op) | |
464 | { | |
465 | union acpi_parse_object *op; | |
466 | struct acpi_namespace_node *node; | |
467 | acpi_status status; | |
468 | acpi_object_type object_type; | |
469 | char *buffer_ptr; | |
470 | ||
471 | ||
472 | ACPI_FUNCTION_TRACE ("ds_load2_begin_op"); | |
473 | ||
474 | ||
475 | op = walk_state->op; | |
476 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state)); | |
477 | ||
478 | if (op) { | |
479 | /* We only care about Namespace opcodes here */ | |
480 | ||
481 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && (walk_state->opcode != AML_INT_NAMEPATH_OP)) || | |
482 | (!(walk_state->op_info->flags & AML_NAMED))) { | |
483 | return_ACPI_STATUS (AE_OK); | |
484 | } | |
485 | ||
486 | /* | |
487 | * Get the name we are going to enter or lookup in the namespace | |
488 | */ | |
489 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { | |
490 | /* For Namepath op, get the path string */ | |
491 | ||
492 | buffer_ptr = op->common.value.string; | |
493 | if (!buffer_ptr) { | |
494 | /* No name, just exit */ | |
495 | ||
496 | return_ACPI_STATUS (AE_OK); | |
497 | } | |
498 | } | |
499 | else { | |
500 | /* Get name from the op */ | |
501 | ||
502 | buffer_ptr = (char *) &op->named.name; | |
503 | } | |
504 | } | |
505 | else { | |
506 | /* Get the namestring from the raw AML */ | |
507 | ||
508 | buffer_ptr = acpi_ps_get_next_namestring (&walk_state->parser_state); | |
509 | } | |
510 | ||
511 | /* Map the opcode into an internal object type */ | |
512 | ||
513 | object_type = walk_state->op_info->object_type; | |
514 | ||
515 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
516 | "State=%p Op=%p Type=%X\n", walk_state, op, object_type)); | |
517 | ||
518 | ||
519 | switch (walk_state->opcode) { | |
520 | case AML_FIELD_OP: | |
521 | case AML_BANK_FIELD_OP: | |
522 | case AML_INDEX_FIELD_OP: | |
523 | ||
524 | node = NULL; | |
525 | status = AE_OK; | |
526 | break; | |
527 | ||
528 | case AML_INT_NAMEPATH_OP: | |
529 | ||
530 | /* | |
531 | * The name_path is an object reference to an existing object. Don't enter the | |
532 | * name into the namespace, but look it up for use later | |
533 | */ | |
534 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, | |
535 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
536 | break; | |
537 | ||
538 | case AML_SCOPE_OP: | |
539 | ||
540 | /* | |
541 | * The Path is an object reference to an existing object. Don't enter the | |
542 | * name into the namespace, but look it up for use later | |
543 | */ | |
544 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, | |
545 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
546 | if (ACPI_FAILURE (status)) { | |
547 | #ifdef _ACPI_ASL_COMPILER | |
548 | if (status == AE_NOT_FOUND) { | |
549 | status = AE_OK; | |
550 | } | |
551 | else { | |
552 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
553 | } | |
554 | #else | |
555 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
556 | #endif | |
557 | return_ACPI_STATUS (status); | |
558 | } | |
559 | /* | |
560 | * We must check to make sure that the target is | |
561 | * one of the opcodes that actually opens a scope | |
562 | */ | |
563 | switch (node->type) { | |
564 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ | |
565 | case ACPI_TYPE_DEVICE: | |
566 | case ACPI_TYPE_POWER: | |
567 | case ACPI_TYPE_PROCESSOR: | |
568 | case ACPI_TYPE_THERMAL: | |
569 | ||
570 | /* These are acceptable types */ | |
571 | break; | |
572 | ||
573 | case ACPI_TYPE_INTEGER: | |
574 | case ACPI_TYPE_STRING: | |
575 | case ACPI_TYPE_BUFFER: | |
576 | ||
577 | /* | |
578 | * These types we will allow, but we will change the type. This | |
579 | * enables some existing code of the form: | |
580 | * | |
581 | * Name (DEB, 0) | |
582 | * Scope (DEB) { ... } | |
583 | */ | |
584 | ||
585 | ACPI_REPORT_WARNING (("Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
586 | buffer_ptr, acpi_ut_get_type_name (node->type))); | |
587 | ||
588 | node->type = ACPI_TYPE_ANY; | |
589 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
590 | break; | |
591 | ||
592 | default: | |
593 | ||
594 | /* All other types are an error */ | |
595 | ||
596 | ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s]\n", | |
597 | acpi_ut_get_type_name (node->type), buffer_ptr)); | |
598 | ||
599 | return (AE_AML_OPERAND_TYPE); | |
600 | } | |
601 | break; | |
602 | ||
603 | default: | |
604 | ||
605 | /* All other opcodes */ | |
606 | ||
607 | if (op && op->common.node) { | |
608 | /* This op/node was previously entered into the namespace */ | |
609 | ||
610 | node = op->common.node; | |
611 | ||
612 | if (acpi_ns_opens_scope (object_type)) { | |
613 | status = acpi_ds_scope_stack_push (node, object_type, walk_state); | |
614 | if (ACPI_FAILURE (status)) { | |
615 | return_ACPI_STATUS (status); | |
616 | } | |
617 | ||
618 | } | |
619 | return_ACPI_STATUS (AE_OK); | |
620 | } | |
621 | ||
622 | /* | |
623 | * Enter the named type into the internal namespace. We enter the name | |
624 | * as we go downward in the parse tree. Any necessary subobjects that involve | |
625 | * arguments to the opcode must be created as we go back up the parse tree later. | |
626 | * | |
627 | * Note: Name may already exist if we are executing a deferred opcode. | |
628 | */ | |
629 | if (walk_state->deferred_node) { | |
630 | /* This name is already in the namespace, get the node */ | |
631 | ||
632 | node = walk_state->deferred_node; | |
633 | status = AE_OK; | |
634 | break; | |
635 | } | |
636 | ||
637 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, | |
638 | ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, walk_state, &(node)); | |
639 | break; | |
640 | } | |
641 | ||
642 | if (ACPI_FAILURE (status)) { | |
643 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
644 | return_ACPI_STATUS (status); | |
645 | } | |
646 | ||
647 | ||
648 | if (!op) { | |
649 | /* Create a new op */ | |
650 | ||
651 | op = acpi_ps_alloc_op (walk_state->opcode); | |
652 | if (!op) { | |
653 | return_ACPI_STATUS (AE_NO_MEMORY); | |
654 | } | |
655 | ||
656 | /* Initialize the new op */ | |
657 | ||
658 | if (node) { | |
659 | op->named.name = node->name.integer; | |
660 | } | |
661 | if (out_op) { | |
662 | *out_op = op; | |
663 | } | |
664 | } | |
665 | ||
666 | /* | |
667 | * Put the Node in the "op" object that the parser uses, so we | |
668 | * can get it again quickly when this scope is closed | |
669 | */ | |
670 | op->common.node = node; | |
671 | ||
672 | return_ACPI_STATUS (status); | |
673 | } | |
674 | ||
675 | ||
676 | /******************************************************************************* | |
677 | * | |
678 | * FUNCTION: acpi_ds_load2_end_op | |
679 | * | |
680 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
681 | * Op - Op that has been just been completed in the | |
682 | * walk; Arguments have now been evaluated. | |
683 | * | |
684 | * RETURN: Status | |
685 | * | |
686 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
687 | * both control methods and everything else. | |
688 | * | |
689 | ******************************************************************************/ | |
690 | ||
691 | acpi_status | |
692 | acpi_ds_load2_end_op ( | |
693 | struct acpi_walk_state *walk_state) | |
694 | { | |
695 | union acpi_parse_object *op; | |
696 | acpi_status status = AE_OK; | |
697 | acpi_object_type object_type; | |
698 | struct acpi_namespace_node *node; | |
699 | union acpi_parse_object *arg; | |
700 | struct acpi_namespace_node *new_node; | |
701 | #ifndef ACPI_NO_METHOD_EXECUTION | |
702 | u32 i; | |
703 | #endif | |
704 | ||
705 | ||
706 | ACPI_FUNCTION_TRACE ("ds_load2_end_op"); | |
707 | ||
708 | op = walk_state->op; | |
709 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", | |
710 | walk_state->op_info->name, op, walk_state)); | |
711 | ||
712 | /* Only interested in opcodes that have namespace objects */ | |
713 | ||
714 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
715 | return_ACPI_STATUS (AE_OK); | |
716 | } | |
717 | ||
718 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
719 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
720 | "Ending scope Op=%p State=%p\n", op, walk_state)); | |
721 | } | |
722 | ||
723 | ||
724 | object_type = walk_state->op_info->object_type; | |
725 | ||
726 | /* | |
727 | * Get the Node/name from the earlier lookup | |
728 | * (It was saved in the *op structure) | |
729 | */ | |
730 | node = op->common.node; | |
731 | ||
732 | /* | |
733 | * Put the Node on the object stack (Contains the ACPI Name of | |
734 | * this object) | |
735 | */ | |
736 | walk_state->operands[0] = (void *) node; | |
737 | walk_state->num_operands = 1; | |
738 | ||
739 | /* Pop the scope stack */ | |
740 | ||
741 | if (acpi_ns_opens_scope (object_type) && (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
742 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", | |
743 | acpi_ut_get_type_name (object_type), op)); | |
744 | ||
745 | status = acpi_ds_scope_stack_pop (walk_state); | |
746 | if (ACPI_FAILURE (status)) { | |
747 | goto cleanup; | |
748 | } | |
749 | } | |
750 | ||
751 | /* | |
752 | * Named operations are as follows: | |
753 | * | |
754 | * AML_ALIAS | |
755 | * AML_BANKFIELD | |
756 | * AML_CREATEBITFIELD | |
757 | * AML_CREATEBYTEFIELD | |
758 | * AML_CREATEDWORDFIELD | |
759 | * AML_CREATEFIELD | |
760 | * AML_CREATEQWORDFIELD | |
761 | * AML_CREATEWORDFIELD | |
762 | * AML_DATA_REGION | |
763 | * AML_DEVICE | |
764 | * AML_EVENT | |
765 | * AML_FIELD | |
766 | * AML_INDEXFIELD | |
767 | * AML_METHOD | |
768 | * AML_METHODCALL | |
769 | * AML_MUTEX | |
770 | * AML_NAME | |
771 | * AML_NAMEDFIELD | |
772 | * AML_OPREGION | |
773 | * AML_POWERRES | |
774 | * AML_PROCESSOR | |
775 | * AML_SCOPE | |
776 | * AML_THERMALZONE | |
777 | */ | |
778 | ||
779 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
780 | "Create-Load [%s] State=%p Op=%p named_obj=%p\n", | |
781 | acpi_ps_get_opcode_name (op->common.aml_opcode), walk_state, op, node)); | |
782 | ||
783 | /* Decode the opcode */ | |
784 | ||
785 | arg = op->common.value.arg; | |
786 | ||
787 | switch (walk_state->op_info->type) { | |
788 | #ifndef ACPI_NO_METHOD_EXECUTION | |
789 | ||
790 | case AML_TYPE_CREATE_FIELD: | |
791 | ||
792 | /* | |
793 | * Create the field object, but the field buffer and index must | |
794 | * be evaluated later during the execution phase | |
795 | */ | |
796 | status = acpi_ds_create_buffer_field (op, walk_state); | |
797 | break; | |
798 | ||
799 | ||
800 | case AML_TYPE_NAMED_FIELD: | |
801 | ||
802 | switch (op->common.aml_opcode) { | |
803 | case AML_INDEX_FIELD_OP: | |
804 | ||
805 | status = acpi_ds_create_index_field (op, (acpi_handle) arg->common.node, | |
806 | walk_state); | |
807 | break; | |
808 | ||
809 | case AML_BANK_FIELD_OP: | |
810 | ||
811 | status = acpi_ds_create_bank_field (op, arg->common.node, walk_state); | |
812 | break; | |
813 | ||
814 | case AML_FIELD_OP: | |
815 | ||
816 | status = acpi_ds_create_field (op, arg->common.node, walk_state); | |
817 | break; | |
818 | ||
819 | default: | |
820 | /* All NAMED_FIELD opcodes must be handled above */ | |
821 | break; | |
822 | } | |
823 | break; | |
824 | ||
825 | ||
826 | case AML_TYPE_NAMED_SIMPLE: | |
827 | ||
828 | status = acpi_ds_create_operands (walk_state, arg); | |
829 | if (ACPI_FAILURE (status)) { | |
830 | goto cleanup; | |
831 | } | |
832 | ||
833 | switch (op->common.aml_opcode) { | |
834 | case AML_PROCESSOR_OP: | |
835 | ||
836 | status = acpi_ex_create_processor (walk_state); | |
837 | break; | |
838 | ||
839 | case AML_POWER_RES_OP: | |
840 | ||
841 | status = acpi_ex_create_power_resource (walk_state); | |
842 | break; | |
843 | ||
844 | case AML_MUTEX_OP: | |
845 | ||
846 | status = acpi_ex_create_mutex (walk_state); | |
847 | break; | |
848 | ||
849 | case AML_EVENT_OP: | |
850 | ||
851 | status = acpi_ex_create_event (walk_state); | |
852 | break; | |
853 | ||
854 | case AML_DATA_REGION_OP: | |
855 | ||
856 | status = acpi_ex_create_table_region (walk_state); | |
857 | break; | |
858 | ||
859 | case AML_ALIAS_OP: | |
860 | ||
861 | status = acpi_ex_create_alias (walk_state); | |
862 | break; | |
863 | ||
864 | default: | |
865 | /* Unknown opcode */ | |
866 | ||
867 | status = AE_OK; | |
868 | goto cleanup; | |
869 | } | |
870 | ||
871 | /* Delete operands */ | |
872 | ||
873 | for (i = 1; i < walk_state->num_operands; i++) { | |
874 | acpi_ut_remove_reference (walk_state->operands[i]); | |
875 | walk_state->operands[i] = NULL; | |
876 | } | |
877 | ||
878 | break; | |
879 | #endif /* ACPI_NO_METHOD_EXECUTION */ | |
880 | ||
881 | case AML_TYPE_NAMED_COMPLEX: | |
882 | ||
883 | switch (op->common.aml_opcode) { | |
884 | #ifndef ACPI_NO_METHOD_EXECUTION | |
885 | case AML_REGION_OP: | |
886 | /* | |
887 | * The op_region is not fully parsed at this time. Only valid argument is the space_id. | |
888 | * (We must save the address of the AML of the address and length operands) | |
889 | */ | |
890 | /* | |
891 | * If we have a valid region, initialize it | |
892 | * Namespace is NOT locked at this point. | |
893 | */ | |
894 | status = acpi_ev_initialize_region (acpi_ns_get_attached_object (node), FALSE); | |
895 | if (ACPI_FAILURE (status)) { | |
896 | /* | |
897 | * If AE_NOT_EXIST is returned, it is not fatal | |
898 | * because many regions get created before a handler | |
899 | * is installed for said region. | |
900 | */ | |
901 | if (AE_NOT_EXIST == status) { | |
902 | status = AE_OK; | |
903 | } | |
904 | } | |
905 | break; | |
906 | ||
907 | ||
908 | case AML_NAME_OP: | |
909 | ||
910 | status = acpi_ds_create_node (walk_state, node, op); | |
911 | break; | |
912 | #endif /* ACPI_NO_METHOD_EXECUTION */ | |
913 | ||
914 | ||
915 | default: | |
916 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
917 | /* Note: Method objects were already created in Pass 1 */ | |
918 | break; | |
919 | } | |
920 | break; | |
921 | ||
922 | ||
923 | case AML_CLASS_INTERNAL: | |
924 | ||
925 | /* case AML_INT_NAMEPATH_OP: */ | |
926 | break; | |
927 | ||
928 | ||
929 | case AML_CLASS_METHOD_CALL: | |
930 | ||
931 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
932 | "RESOLVING-method_call: State=%p Op=%p named_obj=%p\n", | |
933 | walk_state, op, node)); | |
934 | ||
935 | /* | |
936 | * Lookup the method name and save the Node | |
937 | */ | |
938 | status = acpi_ns_lookup (walk_state->scope_info, arg->common.value.string, | |
939 | ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, | |
940 | ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, | |
941 | walk_state, &(new_node)); | |
942 | if (ACPI_SUCCESS (status)) { | |
943 | /* | |
944 | * Make sure that what we found is indeed a method | |
945 | * We didn't search for a method on purpose, to see if the name would resolve | |
946 | */ | |
947 | if (new_node->type != ACPI_TYPE_METHOD) { | |
948 | status = AE_AML_OPERAND_TYPE; | |
949 | } | |
950 | ||
951 | /* We could put the returned object (Node) on the object stack for later, but | |
952 | * for now, we will put it in the "op" object that the parser uses, so we | |
953 | * can get it again at the end of this scope | |
954 | */ | |
955 | op->common.node = new_node; | |
956 | } | |
957 | else { | |
958 | ACPI_REPORT_NSERROR (arg->common.value.string, status); | |
959 | } | |
960 | break; | |
961 | ||
962 | ||
963 | default: | |
964 | break; | |
965 | } | |
966 | ||
967 | cleanup: | |
968 | ||
969 | /* Remove the Node pushed at the very beginning */ | |
970 | ||
971 | walk_state->operands[0] = NULL; | |
972 | walk_state->num_operands = 0; | |
973 | return_ACPI_STATUS (status); | |
974 | } | |
975 | ||
976 |