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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 | ||
73459f73 | 53 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
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)) { | |
1da177e4 LT |
148 | *out_op = op; |
149 | return (AE_OK); | |
150 | } | |
151 | ||
152 | /* Check if this object has already been installed in the namespace */ | |
153 | ||
154 | if (op->common.node) { | |
155 | *out_op = op; | |
156 | return (AE_OK); | |
157 | } | |
158 | } | |
159 | ||
160 | path = acpi_ps_get_next_namestring (&walk_state->parser_state); | |
161 | ||
162 | /* Map the raw opcode into an internal object type */ | |
163 | ||
164 | object_type = walk_state->op_info->object_type; | |
165 | ||
166 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
167 | "State=%p Op=%p [%s]\n", walk_state, op, acpi_ut_get_type_name (object_type))); | |
168 | ||
169 | switch (walk_state->opcode) { | |
170 | case AML_SCOPE_OP: | |
171 | ||
172 | /* | |
173 | * The target name of the Scope() operator must exist at this point so | |
174 | * that we can actually open the scope to enter new names underneath it. | |
175 | * Allow search-to-root for single namesegs. | |
176 | */ | |
177 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
178 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
73459f73 | 179 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
180 | if (status == AE_NOT_FOUND) { |
181 | /* | |
182 | * Table disassembly: | |
183 | * Target of Scope() not found. Generate an External for it, and | |
184 | * insert the name into the namespace. | |
185 | */ | |
186 | acpi_dm_add_to_external_list (path); | |
187 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
44f6c012 RM |
188 | ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, |
189 | walk_state, &(node)); | |
1da177e4 LT |
190 | } |
191 | #endif | |
192 | if (ACPI_FAILURE (status)) { | |
193 | ACPI_REPORT_NSERROR (path, status); | |
194 | return (status); | |
195 | } | |
196 | ||
197 | /* | |
198 | * Check to make sure that the target is | |
199 | * one of the opcodes that actually opens a scope | |
200 | */ | |
201 | switch (node->type) { | |
202 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ | |
203 | case ACPI_TYPE_DEVICE: | |
204 | case ACPI_TYPE_POWER: | |
205 | case ACPI_TYPE_PROCESSOR: | |
206 | case ACPI_TYPE_THERMAL: | |
207 | ||
208 | /* These are acceptable types */ | |
209 | break; | |
210 | ||
211 | case ACPI_TYPE_INTEGER: | |
212 | case ACPI_TYPE_STRING: | |
213 | case ACPI_TYPE_BUFFER: | |
214 | ||
215 | /* | |
216 | * These types we will allow, but we will change the type. This | |
217 | * enables some existing code of the form: | |
218 | * | |
219 | * Name (DEB, 0) | |
220 | * Scope (DEB) { ... } | |
221 | * | |
44f6c012 RM |
222 | * Note: silently change the type here. On the second pass, we will report |
223 | * a warning | |
1da177e4 LT |
224 | */ |
225 | ||
44f6c012 RM |
226 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
227 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
1da177e4 LT |
228 | path, acpi_ut_get_type_name (node->type))); |
229 | ||
230 | node->type = ACPI_TYPE_ANY; | |
231 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
232 | break; | |
233 | ||
234 | default: | |
235 | ||
236 | /* All other types are an error */ | |
237 | ||
44f6c012 RM |
238 | ACPI_REPORT_ERROR (( |
239 | "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", | |
1da177e4 LT |
240 | acpi_ut_get_type_name (node->type), path)); |
241 | ||
242 | return (AE_AML_OPERAND_TYPE); | |
243 | } | |
244 | break; | |
245 | ||
246 | ||
247 | default: | |
248 | ||
249 | /* | |
44f6c012 RM |
250 | * For all other named opcodes, we will enter the name into |
251 | * the namespace. | |
1da177e4 LT |
252 | * |
253 | * Setup the search flags. | |
254 | * Since we are entering a name into the namespace, we do not want to | |
255 | * enable the search-to-root upsearch. | |
256 | * | |
257 | * There are only two conditions where it is acceptable that the name | |
258 | * already exists: | |
259 | * 1) the Scope() operator can reopen a scoping object that was | |
260 | * previously defined (Scope, Method, Device, etc.) | |
261 | * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, | |
262 | * buffer_field, or Package), the name of the object is already | |
263 | * in the namespace. | |
264 | */ | |
265 | if (walk_state->deferred_node) { | |
266 | /* This name is already in the namespace, get the node */ | |
267 | ||
268 | node = walk_state->deferred_node; | |
269 | status = AE_OK; | |
270 | break; | |
271 | } | |
272 | ||
273 | flags = ACPI_NS_NO_UPSEARCH; | |
274 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
275 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { | |
276 | flags |= ACPI_NS_ERROR_IF_FOUND; | |
277 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", | |
278 | acpi_ut_get_type_name (object_type))); | |
279 | } | |
280 | else { | |
44f6c012 RM |
281 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
282 | "[%s] Both Find or Create allowed\n", | |
1da177e4 LT |
283 | acpi_ut_get_type_name (object_type))); |
284 | } | |
285 | ||
286 | /* | |
287 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
288 | * as we go downward in the parse tree. Any necessary subobjects that |
289 | * involve arguments to the opcode must be created as we go back up the | |
290 | * parse tree later. | |
1da177e4 LT |
291 | */ |
292 | status = acpi_ns_lookup (walk_state->scope_info, path, object_type, | |
293 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, &(node)); | |
294 | if (ACPI_FAILURE (status)) { | |
295 | ACPI_REPORT_NSERROR (path, status); | |
296 | return (status); | |
297 | } | |
298 | break; | |
299 | } | |
300 | ||
301 | ||
302 | /* Common exit */ | |
303 | ||
304 | if (!op) { | |
305 | /* Create a new op */ | |
306 | ||
307 | op = acpi_ps_alloc_op (walk_state->opcode); | |
308 | if (!op) { | |
309 | return (AE_NO_MEMORY); | |
310 | } | |
311 | } | |
312 | ||
313 | /* Initialize */ | |
314 | ||
315 | op->named.name = node->name.integer; | |
316 | ||
317 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
318 | op->named.path = (u8 *) path; | |
319 | #endif | |
320 | ||
321 | ||
322 | /* | |
323 | * Put the Node in the "op" object that the parser uses, so we | |
324 | * can get it again quickly when this scope is closed | |
325 | */ | |
326 | op->common.node = node; | |
327 | acpi_ps_append_arg (acpi_ps_get_parent_scope (&walk_state->parser_state), op); | |
328 | ||
329 | *out_op = op; | |
330 | return (status); | |
331 | } | |
332 | ||
333 | ||
334 | /******************************************************************************* | |
335 | * | |
336 | * FUNCTION: acpi_ds_load1_end_op | |
337 | * | |
338 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
339 | * |
340 | * RETURN: Status | |
341 | * | |
342 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
343 | * both control methods and everything else. | |
344 | * | |
345 | ******************************************************************************/ | |
346 | ||
347 | acpi_status | |
348 | acpi_ds_load1_end_op ( | |
349 | struct acpi_walk_state *walk_state) | |
350 | { | |
351 | union acpi_parse_object *op; | |
352 | acpi_object_type object_type; | |
353 | acpi_status status = AE_OK; | |
354 | ||
355 | ||
356 | ACPI_FUNCTION_NAME ("ds_load1_end_op"); | |
357 | ||
358 | ||
359 | op = walk_state->op; | |
360 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state)); | |
361 | ||
362 | /* We are only interested in opcodes that have an associated name */ | |
363 | ||
364 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
365 | return (AE_OK); | |
366 | } | |
367 | ||
368 | /* Get the object type to determine if we should pop the scope */ | |
369 | ||
370 | object_type = walk_state->op_info->object_type; | |
371 | ||
372 | #ifndef ACPI_NO_METHOD_EXECUTION | |
373 | if (walk_state->op_info->flags & AML_FIELD) { | |
374 | if (walk_state->opcode == AML_FIELD_OP || | |
375 | walk_state->opcode == AML_BANK_FIELD_OP || | |
376 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
377 | status = acpi_ds_init_field_objects (op, walk_state); | |
378 | } | |
379 | return (status); | |
380 | } | |
381 | ||
382 | ||
383 | if (op->common.aml_opcode == AML_REGION_OP) { | |
384 | status = acpi_ex_create_region (op->named.data, op->named.length, | |
44f6c012 RM |
385 | (acpi_adr_space_type) |
386 | ((op->common.value.arg)->common.value.integer), | |
387 | walk_state); | |
1da177e4 LT |
388 | if (ACPI_FAILURE (status)) { |
389 | return (status); | |
390 | } | |
391 | } | |
392 | #endif | |
393 | ||
394 | if (op->common.aml_opcode == AML_NAME_OP) { | |
395 | /* For Name opcode, get the object type from the argument */ | |
396 | ||
397 | if (op->common.value.arg) { | |
44f6c012 RM |
398 | object_type = (acpi_ps_get_opcode_info ( |
399 | (op->common.value.arg)->common.aml_opcode))->object_type; | |
1da177e4 LT |
400 | op->common.node->type = (u8) object_type; |
401 | } | |
402 | } | |
403 | ||
404 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
405 | /* | |
406 | * method_op pkg_length name_string method_flags term_list | |
407 | * | |
408 | * Note: We must create the method node/object pair as soon as we | |
409 | * see the method declaration. This allows later pass1 parsing | |
410 | * of invocations of the method (need to know the number of | |
411 | * arguments.) | |
412 | */ | |
413 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
414 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
415 | walk_state, op, op->named.node)); | |
416 | ||
417 | if (!acpi_ns_get_attached_object (op->named.node)) { | |
418 | walk_state->operands[0] = (void *) op->named.node; | |
419 | walk_state->num_operands = 1; | |
420 | ||
421 | status = acpi_ds_create_operands (walk_state, op->common.value.arg); | |
422 | if (ACPI_SUCCESS (status)) { | |
423 | status = acpi_ex_create_method (op->named.data, | |
424 | op->named.length, walk_state); | |
425 | } | |
426 | walk_state->operands[0] = NULL; | |
427 | walk_state->num_operands = 0; | |
428 | ||
429 | if (ACPI_FAILURE (status)) { | |
430 | return (status); | |
431 | } | |
432 | } | |
433 | } | |
434 | ||
435 | /* Pop the scope stack */ | |
436 | ||
437 | if (acpi_ns_opens_scope (object_type)) { | |
438 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", | |
439 | acpi_ut_get_type_name (object_type), op)); | |
440 | ||
441 | status = acpi_ds_scope_stack_pop (walk_state); | |
442 | } | |
443 | ||
444 | return (status); | |
445 | } | |
446 | ||
447 | ||
448 | /******************************************************************************* | |
449 | * | |
450 | * FUNCTION: acpi_ds_load2_begin_op | |
451 | * | |
452 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 453 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
454 | * |
455 | * RETURN: Status | |
456 | * | |
457 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
458 | * | |
459 | ******************************************************************************/ | |
460 | ||
461 | acpi_status | |
462 | acpi_ds_load2_begin_op ( | |
463 | struct acpi_walk_state *walk_state, | |
464 | union acpi_parse_object **out_op) | |
465 | { | |
466 | union acpi_parse_object *op; | |
467 | struct acpi_namespace_node *node; | |
468 | acpi_status status; | |
469 | acpi_object_type object_type; | |
470 | char *buffer_ptr; | |
471 | ||
472 | ||
473 | ACPI_FUNCTION_TRACE ("ds_load2_begin_op"); | |
474 | ||
475 | ||
476 | op = walk_state->op; | |
477 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state)); | |
478 | ||
479 | if (op) { | |
88ac00f5 RM |
480 | if ((walk_state->control_state) && |
481 | (walk_state->control_state->common.state == | |
482 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
483 | /* We are executing a while loop outside of a method */ | |
484 | ||
485 | status = acpi_ds_exec_begin_op (walk_state, out_op); | |
486 | return_ACPI_STATUS (status); | |
487 | } | |
488 | ||
1da177e4 LT |
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 | 493 | (!(walk_state->op_info->flags & AML_NAMED))) { |
44f6c012 RM |
494 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || |
495 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { | |
88ac00f5 RM |
496 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
497 | "Begin/EXEC: %s (fl %8.8X)\n", walk_state->op_info->name, | |
498 | walk_state->op_info->flags)); | |
499 | ||
500 | /* Executing a type1 or type2 opcode outside of a method */ | |
501 | ||
502 | status = acpi_ds_exec_begin_op (walk_state, out_op); | |
503 | return_ACPI_STATUS (status); | |
44f6c012 | 504 | } |
1da177e4 LT |
505 | return_ACPI_STATUS (AE_OK); |
506 | } | |
507 | ||
44f6c012 RM |
508 | /* Get the name we are going to enter or lookup in the namespace */ |
509 | ||
1da177e4 LT |
510 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
511 | /* For Namepath op, get the path string */ | |
512 | ||
513 | buffer_ptr = op->common.value.string; | |
514 | if (!buffer_ptr) { | |
515 | /* No name, just exit */ | |
516 | ||
517 | return_ACPI_STATUS (AE_OK); | |
518 | } | |
519 | } | |
520 | else { | |
521 | /* Get name from the op */ | |
522 | ||
523 | buffer_ptr = (char *) &op->named.name; | |
524 | } | |
525 | } | |
526 | else { | |
527 | /* Get the namestring from the raw AML */ | |
528 | ||
529 | buffer_ptr = acpi_ps_get_next_namestring (&walk_state->parser_state); | |
530 | } | |
531 | ||
532 | /* Map the opcode into an internal object type */ | |
533 | ||
534 | object_type = walk_state->op_info->object_type; | |
535 | ||
536 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
537 | "State=%p Op=%p Type=%X\n", walk_state, op, object_type)); | |
538 | ||
539 | ||
540 | switch (walk_state->opcode) { | |
541 | case AML_FIELD_OP: | |
542 | case AML_BANK_FIELD_OP: | |
543 | case AML_INDEX_FIELD_OP: | |
544 | ||
545 | node = NULL; | |
546 | status = AE_OK; | |
547 | break; | |
548 | ||
549 | case AML_INT_NAMEPATH_OP: | |
550 | ||
551 | /* | |
44f6c012 RM |
552 | * The name_path is an object reference to an existing object. |
553 | * Don't enter the name into the namespace, but look it up | |
554 | * for use later. | |
1da177e4 LT |
555 | */ |
556 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, | |
44f6c012 RM |
557 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
558 | walk_state, &(node)); | |
1da177e4 LT |
559 | break; |
560 | ||
561 | case AML_SCOPE_OP: | |
562 | ||
563 | /* | |
44f6c012 RM |
564 | * The Path is an object reference to an existing object. |
565 | * Don't enter the name into the namespace, but look it up | |
566 | * for use later. | |
1da177e4 LT |
567 | */ |
568 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, | |
44f6c012 RM |
569 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
570 | walk_state, &(node)); | |
1da177e4 | 571 | if (ACPI_FAILURE (status)) { |
73459f73 | 572 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
573 | if (status == AE_NOT_FOUND) { |
574 | status = AE_OK; | |
575 | } | |
576 | else { | |
577 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
578 | } | |
579 | #else | |
580 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
581 | #endif | |
582 | return_ACPI_STATUS (status); | |
583 | } | |
584 | /* | |
585 | * We must check to make sure that the target is | |
586 | * one of the opcodes that actually opens a scope | |
587 | */ | |
588 | switch (node->type) { | |
589 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ | |
590 | case ACPI_TYPE_DEVICE: | |
591 | case ACPI_TYPE_POWER: | |
592 | case ACPI_TYPE_PROCESSOR: | |
593 | case ACPI_TYPE_THERMAL: | |
594 | ||
595 | /* These are acceptable types */ | |
596 | break; | |
597 | ||
598 | case ACPI_TYPE_INTEGER: | |
599 | case ACPI_TYPE_STRING: | |
600 | case ACPI_TYPE_BUFFER: | |
601 | ||
602 | /* | |
603 | * These types we will allow, but we will change the type. This | |
604 | * enables some existing code of the form: | |
605 | * | |
606 | * Name (DEB, 0) | |
607 | * Scope (DEB) { ... } | |
608 | */ | |
609 | ||
44f6c012 RM |
610 | ACPI_REPORT_WARNING (( |
611 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
1da177e4 LT |
612 | buffer_ptr, acpi_ut_get_type_name (node->type))); |
613 | ||
614 | node->type = ACPI_TYPE_ANY; | |
615 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
616 | break; | |
617 | ||
618 | default: | |
619 | ||
620 | /* All other types are an error */ | |
621 | ||
44f6c012 RM |
622 | ACPI_REPORT_ERROR (( |
623 | "Invalid type (%s) for target of Scope operator [%4.4s]\n", | |
1da177e4 LT |
624 | acpi_ut_get_type_name (node->type), buffer_ptr)); |
625 | ||
626 | return (AE_AML_OPERAND_TYPE); | |
627 | } | |
628 | break; | |
629 | ||
630 | default: | |
631 | ||
632 | /* All other opcodes */ | |
633 | ||
634 | if (op && op->common.node) { | |
635 | /* This op/node was previously entered into the namespace */ | |
636 | ||
637 | node = op->common.node; | |
638 | ||
639 | if (acpi_ns_opens_scope (object_type)) { | |
640 | status = acpi_ds_scope_stack_push (node, object_type, walk_state); | |
641 | if (ACPI_FAILURE (status)) { | |
642 | return_ACPI_STATUS (status); | |
643 | } | |
644 | ||
645 | } | |
646 | return_ACPI_STATUS (AE_OK); | |
647 | } | |
648 | ||
649 | /* | |
650 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
651 | * as we go downward in the parse tree. Any necessary subobjects that |
652 | * involve arguments to the opcode must be created as we go back up the | |
653 | * parse tree later. | |
1da177e4 LT |
654 | * |
655 | * Note: Name may already exist if we are executing a deferred opcode. | |
656 | */ | |
657 | if (walk_state->deferred_node) { | |
658 | /* This name is already in the namespace, get the node */ | |
659 | ||
660 | node = walk_state->deferred_node; | |
661 | status = AE_OK; | |
662 | break; | |
663 | } | |
664 | ||
88ac00f5 RM |
665 | /* Add new entry into namespace */ |
666 | ||
1da177e4 | 667 | status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type, |
88ac00f5 | 668 | ACPI_IMODE_LOAD_PASS2, ACPI_NS_NO_UPSEARCH, |
44f6c012 | 669 | walk_state, &(node)); |
1da177e4 LT |
670 | break; |
671 | } | |
672 | ||
673 | if (ACPI_FAILURE (status)) { | |
674 | ACPI_REPORT_NSERROR (buffer_ptr, status); | |
675 | return_ACPI_STATUS (status); | |
676 | } | |
677 | ||
1da177e4 LT |
678 | if (!op) { |
679 | /* Create a new op */ | |
680 | ||
681 | op = acpi_ps_alloc_op (walk_state->opcode); | |
682 | if (!op) { | |
683 | return_ACPI_STATUS (AE_NO_MEMORY); | |
684 | } | |
685 | ||
686 | /* Initialize the new op */ | |
687 | ||
688 | if (node) { | |
689 | op->named.name = node->name.integer; | |
690 | } | |
88ac00f5 | 691 | *out_op = op; |
1da177e4 LT |
692 | } |
693 | ||
694 | /* | |
695 | * Put the Node in the "op" object that the parser uses, so we | |
696 | * can get it again quickly when this scope is closed | |
697 | */ | |
698 | op->common.node = node; | |
699 | ||
700 | return_ACPI_STATUS (status); | |
701 | } | |
702 | ||
703 | ||
704 | /******************************************************************************* | |
705 | * | |
706 | * FUNCTION: acpi_ds_load2_end_op | |
707 | * | |
708 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
709 | * |
710 | * RETURN: Status | |
711 | * | |
712 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
713 | * both control methods and everything else. | |
714 | * | |
715 | ******************************************************************************/ | |
716 | ||
717 | acpi_status | |
718 | acpi_ds_load2_end_op ( | |
719 | struct acpi_walk_state *walk_state) | |
720 | { | |
721 | union acpi_parse_object *op; | |
722 | acpi_status status = AE_OK; | |
723 | acpi_object_type object_type; | |
724 | struct acpi_namespace_node *node; | |
725 | union acpi_parse_object *arg; | |
726 | struct acpi_namespace_node *new_node; | |
727 | #ifndef ACPI_NO_METHOD_EXECUTION | |
728 | u32 i; | |
729 | #endif | |
730 | ||
731 | ||
732 | ACPI_FUNCTION_TRACE ("ds_load2_end_op"); | |
733 | ||
734 | op = walk_state->op; | |
735 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", | |
736 | walk_state->op_info->name, op, walk_state)); | |
737 | ||
88ac00f5 | 738 | /* Check if opcode had an associated namespace object */ |
1da177e4 LT |
739 | |
740 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
88ac00f5 RM |
741 | #ifndef ACPI_NO_METHOD_EXECUTION |
742 | /* No namespace object. Executable opcode? */ | |
743 | ||
744 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
745 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { | |
746 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
747 | "End/EXEC: %s (fl %8.8X)\n", walk_state->op_info->name, | |
748 | walk_state->op_info->flags)); | |
749 | ||
750 | /* Executing a type1 or type2 opcode outside of a method */ | |
751 | ||
752 | status = acpi_ds_exec_end_op (walk_state); | |
753 | return_ACPI_STATUS (status); | |
754 | } | |
755 | #endif | |
1da177e4 LT |
756 | return_ACPI_STATUS (AE_OK); |
757 | } | |
758 | ||
759 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
760 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
761 | "Ending scope Op=%p State=%p\n", op, walk_state)); | |
762 | } | |
763 | ||
1da177e4 LT |
764 | object_type = walk_state->op_info->object_type; |
765 | ||
766 | /* | |
767 | * Get the Node/name from the earlier lookup | |
768 | * (It was saved in the *op structure) | |
769 | */ | |
770 | node = op->common.node; | |
771 | ||
772 | /* | |
773 | * Put the Node on the object stack (Contains the ACPI Name of | |
774 | * this object) | |
775 | */ | |
776 | walk_state->operands[0] = (void *) node; | |
777 | walk_state->num_operands = 1; | |
778 | ||
779 | /* Pop the scope stack */ | |
780 | ||
44f6c012 RM |
781 | if (acpi_ns_opens_scope (object_type) && |
782 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
1da177e4 LT |
783 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", |
784 | acpi_ut_get_type_name (object_type), op)); | |
785 | ||
786 | status = acpi_ds_scope_stack_pop (walk_state); | |
787 | if (ACPI_FAILURE (status)) { | |
788 | goto cleanup; | |
789 | } | |
790 | } | |
791 | ||
792 | /* | |
793 | * Named operations are as follows: | |
794 | * | |
795 | * AML_ALIAS | |
796 | * AML_BANKFIELD | |
797 | * AML_CREATEBITFIELD | |
798 | * AML_CREATEBYTEFIELD | |
799 | * AML_CREATEDWORDFIELD | |
800 | * AML_CREATEFIELD | |
801 | * AML_CREATEQWORDFIELD | |
802 | * AML_CREATEWORDFIELD | |
803 | * AML_DATA_REGION | |
804 | * AML_DEVICE | |
805 | * AML_EVENT | |
806 | * AML_FIELD | |
807 | * AML_INDEXFIELD | |
808 | * AML_METHOD | |
809 | * AML_METHODCALL | |
810 | * AML_MUTEX | |
811 | * AML_NAME | |
812 | * AML_NAMEDFIELD | |
813 | * AML_OPREGION | |
814 | * AML_POWERRES | |
815 | * AML_PROCESSOR | |
816 | * AML_SCOPE | |
817 | * AML_THERMALZONE | |
818 | */ | |
819 | ||
820 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
821 | "Create-Load [%s] State=%p Op=%p named_obj=%p\n", | |
822 | acpi_ps_get_opcode_name (op->common.aml_opcode), walk_state, op, node)); | |
823 | ||
824 | /* Decode the opcode */ | |
825 | ||
826 | arg = op->common.value.arg; | |
827 | ||
828 | switch (walk_state->op_info->type) { | |
829 | #ifndef ACPI_NO_METHOD_EXECUTION | |
830 | ||
831 | case AML_TYPE_CREATE_FIELD: | |
832 | ||
833 | /* | |
834 | * Create the field object, but the field buffer and index must | |
835 | * be evaluated later during the execution phase | |
836 | */ | |
837 | status = acpi_ds_create_buffer_field (op, walk_state); | |
838 | break; | |
839 | ||
840 | ||
841 | case AML_TYPE_NAMED_FIELD: | |
842 | ||
843 | switch (op->common.aml_opcode) { | |
844 | case AML_INDEX_FIELD_OP: | |
845 | ||
846 | status = acpi_ds_create_index_field (op, (acpi_handle) arg->common.node, | |
44f6c012 | 847 | walk_state); |
1da177e4 LT |
848 | break; |
849 | ||
850 | case AML_BANK_FIELD_OP: | |
851 | ||
852 | status = acpi_ds_create_bank_field (op, arg->common.node, walk_state); | |
853 | break; | |
854 | ||
855 | case AML_FIELD_OP: | |
856 | ||
857 | status = acpi_ds_create_field (op, arg->common.node, walk_state); | |
858 | break; | |
859 | ||
860 | default: | |
861 | /* All NAMED_FIELD opcodes must be handled above */ | |
862 | break; | |
863 | } | |
864 | break; | |
865 | ||
866 | ||
867 | case AML_TYPE_NAMED_SIMPLE: | |
868 | ||
869 | status = acpi_ds_create_operands (walk_state, arg); | |
870 | if (ACPI_FAILURE (status)) { | |
871 | goto cleanup; | |
872 | } | |
873 | ||
874 | switch (op->common.aml_opcode) { | |
875 | case AML_PROCESSOR_OP: | |
876 | ||
877 | status = acpi_ex_create_processor (walk_state); | |
878 | break; | |
879 | ||
880 | case AML_POWER_RES_OP: | |
881 | ||
882 | status = acpi_ex_create_power_resource (walk_state); | |
883 | break; | |
884 | ||
885 | case AML_MUTEX_OP: | |
886 | ||
887 | status = acpi_ex_create_mutex (walk_state); | |
888 | break; | |
889 | ||
890 | case AML_EVENT_OP: | |
891 | ||
892 | status = acpi_ex_create_event (walk_state); | |
893 | break; | |
894 | ||
895 | case AML_DATA_REGION_OP: | |
896 | ||
897 | status = acpi_ex_create_table_region (walk_state); | |
898 | break; | |
899 | ||
900 | case AML_ALIAS_OP: | |
901 | ||
902 | status = acpi_ex_create_alias (walk_state); | |
903 | break; | |
904 | ||
905 | default: | |
906 | /* Unknown opcode */ | |
907 | ||
908 | status = AE_OK; | |
909 | goto cleanup; | |
910 | } | |
911 | ||
912 | /* Delete operands */ | |
913 | ||
914 | for (i = 1; i < walk_state->num_operands; i++) { | |
915 | acpi_ut_remove_reference (walk_state->operands[i]); | |
916 | walk_state->operands[i] = NULL; | |
917 | } | |
918 | ||
919 | break; | |
920 | #endif /* ACPI_NO_METHOD_EXECUTION */ | |
921 | ||
922 | case AML_TYPE_NAMED_COMPLEX: | |
923 | ||
924 | switch (op->common.aml_opcode) { | |
925 | #ifndef ACPI_NO_METHOD_EXECUTION | |
926 | case AML_REGION_OP: | |
927 | /* | |
44f6c012 RM |
928 | * The op_region is not fully parsed at this time. Only valid |
929 | * argument is the space_id. (We must save the address of the | |
930 | * AML of the address and length operands) | |
1da177e4 LT |
931 | */ |
932 | /* | |
933 | * If we have a valid region, initialize it | |
934 | * Namespace is NOT locked at this point. | |
935 | */ | |
44f6c012 RM |
936 | status = acpi_ev_initialize_region (acpi_ns_get_attached_object (node), |
937 | FALSE); | |
1da177e4 LT |
938 | if (ACPI_FAILURE (status)) { |
939 | /* | |
940 | * If AE_NOT_EXIST is returned, it is not fatal | |
941 | * because many regions get created before a handler | |
942 | * is installed for said region. | |
943 | */ | |
944 | if (AE_NOT_EXIST == status) { | |
945 | status = AE_OK; | |
946 | } | |
947 | } | |
948 | break; | |
949 | ||
950 | ||
951 | case AML_NAME_OP: | |
952 | ||
953 | status = acpi_ds_create_node (walk_state, node, op); | |
954 | break; | |
955 | #endif /* ACPI_NO_METHOD_EXECUTION */ | |
956 | ||
957 | ||
958 | default: | |
959 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
960 | /* Note: Method objects were already created in Pass 1 */ | |
961 | break; | |
962 | } | |
963 | break; | |
964 | ||
965 | ||
966 | case AML_CLASS_INTERNAL: | |
967 | ||
968 | /* case AML_INT_NAMEPATH_OP: */ | |
969 | break; | |
970 | ||
971 | ||
972 | case AML_CLASS_METHOD_CALL: | |
973 | ||
974 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
975 | "RESOLVING-method_call: State=%p Op=%p named_obj=%p\n", | |
976 | walk_state, op, node)); | |
977 | ||
978 | /* | |
979 | * Lookup the method name and save the Node | |
980 | */ | |
981 | status = acpi_ns_lookup (walk_state->scope_info, arg->common.value.string, | |
982 | ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, | |
983 | ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, | |
984 | walk_state, &(new_node)); | |
985 | if (ACPI_SUCCESS (status)) { | |
bd6dbdf3 | 986 | |
1da177e4 LT |
987 | /* |
988 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
989 | * We didn't search for a method on purpose, to see if the name |
990 | * would resolve | |
1da177e4 LT |
991 | */ |
992 | if (new_node->type != ACPI_TYPE_METHOD) { | |
993 | status = AE_AML_OPERAND_TYPE; | |
994 | } | |
995 | ||
44f6c012 RM |
996 | /* We could put the returned object (Node) on the object stack for |
997 | * later, but for now, we will put it in the "op" object that the | |
998 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
999 | */ |
1000 | op->common.node = new_node; | |
1001 | } | |
1002 | else { | |
1003 | ACPI_REPORT_NSERROR (arg->common.value.string, status); | |
1004 | } | |
1005 | break; | |
1006 | ||
1007 | ||
1008 | default: | |
1009 | break; | |
1010 | } | |
1011 | ||
1012 | cleanup: | |
1013 | ||
1014 | /* Remove the Node pushed at the very beginning */ | |
1015 | ||
1016 | walk_state->operands[0] = NULL; | |
1017 | walk_state->num_operands = 0; | |
1018 | return_ACPI_STATUS (status); | |
1019 | } | |
1020 | ||
1021 |