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1/******************************************************************************
2 *
3 * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2011, Intel Corp.
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#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acparser.h"
47#include "amlcode.h"
48#include "acdispat.h"
49#include "acinterp.h"
50#include "acnamesp.h"
51#include "acevents.h"
52
53#define _COMPONENT ACPI_DISPATCHER
54ACPI_MODULE_NAME("dswload2")
55
56/*******************************************************************************
57 *
58 * FUNCTION: acpi_ds_load2_begin_op
59 *
60 * PARAMETERS: walk_state - Current state of the parse tree walk
61 * out_op - Wher to return op if a new one is created
62 *
63 * RETURN: Status
64 *
65 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
66 *
67 ******************************************************************************/
68acpi_status
69acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
70 union acpi_parse_object **out_op)
71{
72 union acpi_parse_object *op;
73 struct acpi_namespace_node *node;
74 acpi_status status;
75 acpi_object_type object_type;
76 char *buffer_ptr;
77 u32 flags;
78
79 ACPI_FUNCTION_TRACE(ds_load2_begin_op);
80
81 op = walk_state->op;
82 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
83 walk_state));
84
85 if (op) {
86 if ((walk_state->control_state) &&
87 (walk_state->control_state->common.state ==
88 ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
89
90 /* We are executing a while loop outside of a method */
91
92 status = acpi_ds_exec_begin_op(walk_state, out_op);
93 return_ACPI_STATUS(status);
94 }
95
96 /* We only care about Namespace opcodes here */
97
98 if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
99 (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
100 (!(walk_state->op_info->flags & AML_NAMED))) {
101 return_ACPI_STATUS(AE_OK);
102 }
103
104 /* Get the name we are going to enter or lookup in the namespace */
105
106 if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
107
108 /* For Namepath op, get the path string */
109
110 buffer_ptr = op->common.value.string;
111 if (!buffer_ptr) {
112
113 /* No name, just exit */
114
115 return_ACPI_STATUS(AE_OK);
116 }
117 } else {
118 /* Get name from the op */
119
120 buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
121 }
122 } else {
123 /* Get the namestring from the raw AML */
124
125 buffer_ptr =
126 acpi_ps_get_next_namestring(&walk_state->parser_state);
127 }
128
129 /* Map the opcode into an internal object type */
130
131 object_type = walk_state->op_info->object_type;
132
133 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
134 "State=%p Op=%p Type=%X\n", walk_state, op,
135 object_type));
136
137 switch (walk_state->opcode) {
138 case AML_FIELD_OP:
139 case AML_BANK_FIELD_OP:
140 case AML_INDEX_FIELD_OP:
141
142 node = NULL;
143 status = AE_OK;
144 break;
145
146 case AML_INT_NAMEPATH_OP:
147 /*
148 * The name_path is an object reference to an existing object.
149 * Don't enter the name into the namespace, but look it up
150 * for use later.
151 */
152 status =
153 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
154 object_type, ACPI_IMODE_EXECUTE,
155 ACPI_NS_SEARCH_PARENT, walk_state, &(node));
156 break;
157
158 case AML_SCOPE_OP:
159
160 /* Special case for Scope(\) -> refers to the Root node */
161
162 if (op && (op->named.node == acpi_gbl_root_node)) {
163 node = op->named.node;
164
165 status =
166 acpi_ds_scope_stack_push(node, object_type,
167 walk_state);
168 if (ACPI_FAILURE(status)) {
169 return_ACPI_STATUS(status);
170 }
171 } else {
172 /*
173 * The Path is an object reference to an existing object.
174 * Don't enter the name into the namespace, but look it up
175 * for use later.
176 */
177 status =
178 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
179 object_type, ACPI_IMODE_EXECUTE,
180 ACPI_NS_SEARCH_PARENT, walk_state,
181 &(node));
182 if (ACPI_FAILURE(status)) {
183#ifdef ACPI_ASL_COMPILER
184 if (status == AE_NOT_FOUND) {
185 status = AE_OK;
186 } else {
187 ACPI_ERROR_NAMESPACE(buffer_ptr,
188 status);
189 }
190#else
191 ACPI_ERROR_NAMESPACE(buffer_ptr, status);
192#endif
193 return_ACPI_STATUS(status);
194 }
195 }
196
197 /*
198 * We must 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_ANY:
203 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
204 case ACPI_TYPE_DEVICE:
205 case ACPI_TYPE_POWER:
206 case ACPI_TYPE_PROCESSOR:
207 case ACPI_TYPE_THERMAL:
208
209 /* These are acceptable types */
210 break;
211
212 case ACPI_TYPE_INTEGER:
213 case ACPI_TYPE_STRING:
214 case ACPI_TYPE_BUFFER:
215
216 /*
217 * These types we will allow, but we will change the type.
218 * This enables some existing code of the form:
219 *
220 * Name (DEB, 0)
221 * Scope (DEB) { ... }
222 */
223 ACPI_WARNING((AE_INFO,
224 "Type override - [%4.4s] had invalid type (%s) "
225 "for Scope operator, changed to type ANY\n",
226 acpi_ut_get_node_name(node),
227 acpi_ut_get_type_name(node->type)));
228
229 node->type = ACPI_TYPE_ANY;
230 walk_state->scope_info->common.value = ACPI_TYPE_ANY;
231 break;
232
233 default:
234
235 /* All other types are an error */
236
237 ACPI_ERROR((AE_INFO,
238 "Invalid type (%s) for target of "
239 "Scope operator [%4.4s] (Cannot override)",
240 acpi_ut_get_type_name(node->type),
241 acpi_ut_get_node_name(node)));
242
243 return (AE_AML_OPERAND_TYPE);
244 }
245 break;
246
247 default:
248
249 /* All other opcodes */
250
251 if (op && op->common.node) {
252
253 /* This op/node was previously entered into the namespace */
254
255 node = op->common.node;
256
257 if (acpi_ns_opens_scope(object_type)) {
258 status =
259 acpi_ds_scope_stack_push(node, object_type,
260 walk_state);
261 if (ACPI_FAILURE(status)) {
262 return_ACPI_STATUS(status);
263 }
264 }
265
266 return_ACPI_STATUS(AE_OK);
267 }
268
269 /*
270 * Enter the named type into the internal namespace. We enter the name
271 * as we go downward in the parse tree. Any necessary subobjects that
272 * involve arguments to the opcode must be created as we go back up the
273 * parse tree later.
274 *
275 * Note: Name may already exist if we are executing a deferred opcode.
276 */
277 if (walk_state->deferred_node) {
278
279 /* This name is already in the namespace, get the node */
280
281 node = walk_state->deferred_node;
282 status = AE_OK;
283 break;
284 }
285
286 flags = ACPI_NS_NO_UPSEARCH;
287 if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
288
289 /* Execution mode, node cannot already exist, node is temporary */
290
291 flags |= ACPI_NS_ERROR_IF_FOUND;
292
293 if (!
294 (walk_state->
295 parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
296 flags |= ACPI_NS_TEMPORARY;
297 }
298 }
299
300 /* Add new entry or lookup existing entry */
301
302 status =
303 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
304 object_type, ACPI_IMODE_LOAD_PASS2, flags,
305 walk_state, &node);
306
307 if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) {
308 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
309 "***New Node [%4.4s] %p is temporary\n",
310 acpi_ut_get_node_name(node), node));
311 }
312 break;
313 }
314
315 if (ACPI_FAILURE(status)) {
316 ACPI_ERROR_NAMESPACE(buffer_ptr, status);
317 return_ACPI_STATUS(status);
318 }
319
320 if (!op) {
321
322 /* Create a new op */
323
324 op = acpi_ps_alloc_op(walk_state->opcode);
325 if (!op) {
326 return_ACPI_STATUS(AE_NO_MEMORY);
327 }
328
329 /* Initialize the new op */
330
331 if (node) {
332 op->named.name = node->name.integer;
333 }
334 *out_op = op;
335 }
336
337 /*
338 * Put the Node in the "op" object that the parser uses, so we
339 * can get it again quickly when this scope is closed
340 */
341 op->common.node = node;
342 return_ACPI_STATUS(status);
343}
344
345/*******************************************************************************
346 *
347 * FUNCTION: acpi_ds_load2_end_op
348 *
349 * PARAMETERS: walk_state - Current state of the parse tree walk
350 *
351 * RETURN: Status
352 *
353 * DESCRIPTION: Ascending callback used during the loading of the namespace,
354 * both control methods and everything else.
355 *
356 ******************************************************************************/
357
358acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
359{
360 union acpi_parse_object *op;
361 acpi_status status = AE_OK;
362 acpi_object_type object_type;
363 struct acpi_namespace_node *node;
364 union acpi_parse_object *arg;
365 struct acpi_namespace_node *new_node;
366#ifndef ACPI_NO_METHOD_EXECUTION
367 u32 i;
368 u8 region_space;
369#endif
370
371 ACPI_FUNCTION_TRACE(ds_load2_end_op);
372
373 op = walk_state->op;
374 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
375 walk_state->op_info->name, op, walk_state));
376
377 /* Check if opcode had an associated namespace object */
378
379 if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
380 return_ACPI_STATUS(AE_OK);
381 }
382
383 if (op->common.aml_opcode == AML_SCOPE_OP) {
384 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
385 "Ending scope Op=%p State=%p\n", op,
386 walk_state));
387 }
388
389 object_type = walk_state->op_info->object_type;
390
391 /*
392 * Get the Node/name from the earlier lookup
393 * (It was saved in the *op structure)
394 */
395 node = op->common.node;
396
397 /*
398 * Put the Node on the object stack (Contains the ACPI Name of
399 * this object)
400 */
401 walk_state->operands[0] = (void *)node;
402 walk_state->num_operands = 1;
403
404 /* Pop the scope stack */
405
406 if (acpi_ns_opens_scope(object_type) &&
407 (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
408 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
409 "(%s) Popping scope for Op %p\n",
410 acpi_ut_get_type_name(object_type), op));
411
412 status = acpi_ds_scope_stack_pop(walk_state);
413 if (ACPI_FAILURE(status)) {
414 goto cleanup;
415 }
416 }
417
418 /*
419 * Named operations are as follows:
420 *
421 * AML_ALIAS
422 * AML_BANKFIELD
423 * AML_CREATEBITFIELD
424 * AML_CREATEBYTEFIELD
425 * AML_CREATEDWORDFIELD
426 * AML_CREATEFIELD
427 * AML_CREATEQWORDFIELD
428 * AML_CREATEWORDFIELD
429 * AML_DATA_REGION
430 * AML_DEVICE
431 * AML_EVENT
432 * AML_FIELD
433 * AML_INDEXFIELD
434 * AML_METHOD
435 * AML_METHODCALL
436 * AML_MUTEX
437 * AML_NAME
438 * AML_NAMEDFIELD
439 * AML_OPREGION
440 * AML_POWERRES
441 * AML_PROCESSOR
442 * AML_SCOPE
443 * AML_THERMALZONE
444 */
445
446 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
447 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
448 acpi_ps_get_opcode_name(op->common.aml_opcode),
449 walk_state, op, node));
450
451 /* Decode the opcode */
452
453 arg = op->common.value.arg;
454
455 switch (walk_state->op_info->type) {
456#ifndef ACPI_NO_METHOD_EXECUTION
457
458 case AML_TYPE_CREATE_FIELD:
459 /*
460 * Create the field object, but the field buffer and index must
461 * be evaluated later during the execution phase
462 */
463 status = acpi_ds_create_buffer_field(op, walk_state);
464 break;
465
466 case AML_TYPE_NAMED_FIELD:
467 /*
468 * If we are executing a method, initialize the field
469 */
470 if (walk_state->method_node) {
471 status = acpi_ds_init_field_objects(op, walk_state);
472 }
473
474 switch (op->common.aml_opcode) {
475 case AML_INDEX_FIELD_OP:
476
477 status =
478 acpi_ds_create_index_field(op,
479 (acpi_handle) arg->
480 common.node, walk_state);
481 break;
482
483 case AML_BANK_FIELD_OP:
484
485 status =
486 acpi_ds_create_bank_field(op, arg->common.node,
487 walk_state);
488 break;
489
490 case AML_FIELD_OP:
491
492 status =
493 acpi_ds_create_field(op, arg->common.node,
494 walk_state);
495 break;
496
497 default:
498 /* All NAMED_FIELD opcodes must be handled above */
499 break;
500 }
501 break;
502
503 case AML_TYPE_NAMED_SIMPLE:
504
505 status = acpi_ds_create_operands(walk_state, arg);
506 if (ACPI_FAILURE(status)) {
507 goto cleanup;
508 }
509
510 switch (op->common.aml_opcode) {
511 case AML_PROCESSOR_OP:
512
513 status = acpi_ex_create_processor(walk_state);
514 break;
515
516 case AML_POWER_RES_OP:
517
518 status = acpi_ex_create_power_resource(walk_state);
519 break;
520
521 case AML_MUTEX_OP:
522
523 status = acpi_ex_create_mutex(walk_state);
524 break;
525
526 case AML_EVENT_OP:
527
528 status = acpi_ex_create_event(walk_state);
529 break;
530
531 case AML_ALIAS_OP:
532
533 status = acpi_ex_create_alias(walk_state);
534 break;
535
536 default:
537 /* Unknown opcode */
538
539 status = AE_OK;
540 goto cleanup;
541 }
542
543 /* Delete operands */
544
545 for (i = 1; i < walk_state->num_operands; i++) {
546 acpi_ut_remove_reference(walk_state->operands[i]);
547 walk_state->operands[i] = NULL;
548 }
549
550 break;
551#endif /* ACPI_NO_METHOD_EXECUTION */
552
553 case AML_TYPE_NAMED_COMPLEX:
554
555 switch (op->common.aml_opcode) {
556#ifndef ACPI_NO_METHOD_EXECUTION
557 case AML_REGION_OP:
558 case AML_DATA_REGION_OP:
559
560 if (op->common.aml_opcode == AML_REGION_OP) {
561 region_space = (acpi_adr_space_type)
562 ((op->common.value.arg)->common.value.
563 integer);
564 } else {
565 region_space = ACPI_ADR_SPACE_DATA_TABLE;
566 }
567
568 /*
569 * The op_region is not fully parsed at this time. The only valid
570 * argument is the space_id. (We must save the address of the
571 * AML of the address and length operands)
572 *
573 * If we have a valid region, initialize it. The namespace is
574 * unlocked at this point.
575 *
576 * Need to unlock interpreter if it is locked (if we are running
577 * a control method), in order to allow _REG methods to be run
578 * during acpi_ev_initialize_region.
579 */
580 if (walk_state->method_node) {
581 /*
582 * Executing a method: initialize the region and unlock
583 * the interpreter
584 */
585 status =
586 acpi_ex_create_region(op->named.data,
587 op->named.length,
588 region_space,
589 walk_state);
590 if (ACPI_FAILURE(status)) {
591 return (status);
592 }
593
594 acpi_ex_exit_interpreter();
595 }
596
597 status =
598 acpi_ev_initialize_region
599 (acpi_ns_get_attached_object(node), FALSE);
600 if (walk_state->method_node) {
601 acpi_ex_enter_interpreter();
602 }
603
604 if (ACPI_FAILURE(status)) {
605 /*
606 * If AE_NOT_EXIST is returned, it is not fatal
607 * because many regions get created before a handler
608 * is installed for said region.
609 */
610 if (AE_NOT_EXIST == status) {
611 status = AE_OK;
612 }
613 }
614 break;
615
616 case AML_NAME_OP:
617
618 status = acpi_ds_create_node(walk_state, node, op);
619 break;
620
621 case AML_METHOD_OP:
622 /*
623 * method_op pkg_length name_string method_flags term_list
624 *
625 * Note: We must create the method node/object pair as soon as we
626 * see the method declaration. This allows later pass1 parsing
627 * of invocations of the method (need to know the number of
628 * arguments.)
629 */
630 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
631 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
632 walk_state, op, op->named.node));
633
634 if (!acpi_ns_get_attached_object(op->named.node)) {
635 walk_state->operands[0] =
636 ACPI_CAST_PTR(void, op->named.node);
637 walk_state->num_operands = 1;
638
639 status =
640 acpi_ds_create_operands(walk_state,
641 op->common.value.
642 arg);
643 if (ACPI_SUCCESS(status)) {
644 status =
645 acpi_ex_create_method(op->named.
646 data,
647 op->named.
648 length,
649 walk_state);
650 }
651 walk_state->operands[0] = NULL;
652 walk_state->num_operands = 0;
653
654 if (ACPI_FAILURE(status)) {
655 return_ACPI_STATUS(status);
656 }
657 }
658 break;
659
660#endif /* ACPI_NO_METHOD_EXECUTION */
661
662 default:
663 /* All NAMED_COMPLEX opcodes must be handled above */
664 break;
665 }
666 break;
667
668 case AML_CLASS_INTERNAL:
669
670 /* case AML_INT_NAMEPATH_OP: */
671 break;
672
673 case AML_CLASS_METHOD_CALL:
674
675 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
676 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
677 walk_state, op, node));
678
679 /*
680 * Lookup the method name and save the Node
681 */
682 status =
683 acpi_ns_lookup(walk_state->scope_info,
684 arg->common.value.string, ACPI_TYPE_ANY,
685 ACPI_IMODE_LOAD_PASS2,
686 ACPI_NS_SEARCH_PARENT |
687 ACPI_NS_DONT_OPEN_SCOPE, walk_state,
688 &(new_node));
689 if (ACPI_SUCCESS(status)) {
690 /*
691 * Make sure that what we found is indeed a method
692 * We didn't search for a method on purpose, to see if the name
693 * would resolve
694 */
695 if (new_node->type != ACPI_TYPE_METHOD) {
696 status = AE_AML_OPERAND_TYPE;
697 }
698
699 /* We could put the returned object (Node) on the object stack for
700 * later, but for now, we will put it in the "op" object that the
701 * parser uses, so we can get it again at the end of this scope
702 */
703 op->common.node = new_node;
704 } else {
705 ACPI_ERROR_NAMESPACE(arg->common.value.string, status);
706 }
707 break;
708
709 default:
710 break;
711 }
712
713 cleanup:
714
715 /* Remove the Node pushed at the very beginning */
716
717 walk_state->operands[0] = NULL;
718 walk_state->num_operands = 0;
719 return_ACPI_STATUS(status);
720}
1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2/******************************************************************************
3 *
4 * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
5 *
6 * Copyright (C) 2000 - 2018, Intel Corp.
7 *
8 *****************************************************************************/
9
10#include <acpi/acpi.h>
11#include "accommon.h"
12#include "acparser.h"
13#include "amlcode.h"
14#include "acdispat.h"
15#include "acinterp.h"
16#include "acnamesp.h"
17#include "acevents.h"
18
19#define _COMPONENT ACPI_DISPATCHER
20ACPI_MODULE_NAME("dswload2")
21
22/*******************************************************************************
23 *
24 * FUNCTION: acpi_ds_load2_begin_op
25 *
26 * PARAMETERS: walk_state - Current state of the parse tree walk
27 * out_op - Wher to return op if a new one is created
28 *
29 * RETURN: Status
30 *
31 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
32 *
33 ******************************************************************************/
34acpi_status
35acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
36 union acpi_parse_object **out_op)
37{
38 union acpi_parse_object *op;
39 struct acpi_namespace_node *node;
40 acpi_status status;
41 acpi_object_type object_type;
42 char *buffer_ptr;
43 u32 flags;
44
45 ACPI_FUNCTION_TRACE(ds_load2_begin_op);
46
47 op = walk_state->op;
48 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
49 walk_state));
50
51 if (op) {
52 if ((walk_state->control_state) &&
53 (walk_state->control_state->common.state ==
54 ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
55
56 /* We are executing a while loop outside of a method */
57
58 status = acpi_ds_exec_begin_op(walk_state, out_op);
59 return_ACPI_STATUS(status);
60 }
61
62 /* We only care about Namespace opcodes here */
63
64 if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
65 (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
66 (!(walk_state->op_info->flags & AML_NAMED))) {
67 return_ACPI_STATUS(AE_OK);
68 }
69
70 /* Get the name we are going to enter or lookup in the namespace */
71
72 if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
73
74 /* For Namepath op, get the path string */
75
76 buffer_ptr = op->common.value.string;
77 if (!buffer_ptr) {
78
79 /* No name, just exit */
80
81 return_ACPI_STATUS(AE_OK);
82 }
83 } else {
84 /* Get name from the op */
85
86 buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
87 }
88 } else {
89 /* Get the namestring from the raw AML */
90
91 buffer_ptr =
92 acpi_ps_get_next_namestring(&walk_state->parser_state);
93 }
94
95 /* Map the opcode into an internal object type */
96
97 object_type = walk_state->op_info->object_type;
98
99 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
100 "State=%p Op=%p Type=%X\n", walk_state, op,
101 object_type));
102
103 switch (walk_state->opcode) {
104 case AML_FIELD_OP:
105 case AML_BANK_FIELD_OP:
106 case AML_INDEX_FIELD_OP:
107
108 node = NULL;
109 status = AE_OK;
110 break;
111
112 case AML_INT_NAMEPATH_OP:
113 /*
114 * The name_path is an object reference to an existing object.
115 * Don't enter the name into the namespace, but look it up
116 * for use later.
117 */
118 status =
119 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
120 object_type, ACPI_IMODE_EXECUTE,
121 ACPI_NS_SEARCH_PARENT, walk_state, &(node));
122 break;
123
124 case AML_SCOPE_OP:
125
126 /* Special case for Scope(\) -> refers to the Root node */
127
128 if (op && (op->named.node == acpi_gbl_root_node)) {
129 node = op->named.node;
130
131 status =
132 acpi_ds_scope_stack_push(node, object_type,
133 walk_state);
134 if (ACPI_FAILURE(status)) {
135 return_ACPI_STATUS(status);
136 }
137 } else {
138 /*
139 * The Path is an object reference to an existing object.
140 * Don't enter the name into the namespace, but look it up
141 * for use later.
142 */
143 status =
144 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
145 object_type, ACPI_IMODE_EXECUTE,
146 ACPI_NS_SEARCH_PARENT, walk_state,
147 &(node));
148 if (ACPI_FAILURE(status)) {
149#ifdef ACPI_ASL_COMPILER
150 if (status == AE_NOT_FOUND) {
151 status = AE_OK;
152 } else {
153 ACPI_ERROR_NAMESPACE(walk_state->
154 scope_info,
155 buffer_ptr,
156 status);
157 }
158#else
159 ACPI_ERROR_NAMESPACE(walk_state->scope_info,
160 buffer_ptr, status);
161#endif
162 return_ACPI_STATUS(status);
163 }
164 }
165
166 /*
167 * We must check to make sure that the target is
168 * one of the opcodes that actually opens a scope
169 */
170 switch (node->type) {
171 case ACPI_TYPE_ANY:
172 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
173 case ACPI_TYPE_DEVICE:
174 case ACPI_TYPE_POWER:
175 case ACPI_TYPE_PROCESSOR:
176 case ACPI_TYPE_THERMAL:
177
178 /* These are acceptable types */
179 break;
180
181 case ACPI_TYPE_INTEGER:
182 case ACPI_TYPE_STRING:
183 case ACPI_TYPE_BUFFER:
184
185 /*
186 * These types we will allow, but we will change the type.
187 * This enables some existing code of the form:
188 *
189 * Name (DEB, 0)
190 * Scope (DEB) { ... }
191 */
192 ACPI_WARNING((AE_INFO,
193 "Type override - [%4.4s] had invalid type (%s) "
194 "for Scope operator, changed to type ANY",
195 acpi_ut_get_node_name(node),
196 acpi_ut_get_type_name(node->type)));
197
198 node->type = ACPI_TYPE_ANY;
199 walk_state->scope_info->common.value = ACPI_TYPE_ANY;
200 break;
201
202 case ACPI_TYPE_METHOD:
203
204 /*
205 * Allow scope change to root during execution of module-level
206 * code. Root is typed METHOD during this time.
207 */
208 if ((node == acpi_gbl_root_node) &&
209 (walk_state->
210 parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
211 break;
212 }
213
214 /*lint -fallthrough */
215
216 default:
217
218 /* All other types are an error */
219
220 ACPI_ERROR((AE_INFO,
221 "Invalid type (%s) for target of "
222 "Scope operator [%4.4s] (Cannot override)",
223 acpi_ut_get_type_name(node->type),
224 acpi_ut_get_node_name(node)));
225
226 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
227 }
228 break;
229
230 default:
231
232 /* All other opcodes */
233
234 if (op && op->common.node) {
235
236 /* This op/node was previously entered into the namespace */
237
238 node = op->common.node;
239
240 if (acpi_ns_opens_scope(object_type)) {
241 status =
242 acpi_ds_scope_stack_push(node, object_type,
243 walk_state);
244 if (ACPI_FAILURE(status)) {
245 return_ACPI_STATUS(status);
246 }
247 }
248
249 return_ACPI_STATUS(AE_OK);
250 }
251
252 /*
253 * Enter the named type into the internal namespace. We enter the name
254 * as we go downward in the parse tree. Any necessary subobjects that
255 * involve arguments to the opcode must be created as we go back up the
256 * parse tree later.
257 *
258 * Note: Name may already exist if we are executing a deferred opcode.
259 */
260 if (walk_state->deferred_node) {
261
262 /* This name is already in the namespace, get the node */
263
264 node = walk_state->deferred_node;
265 status = AE_OK;
266 break;
267 }
268
269 flags = ACPI_NS_NO_UPSEARCH;
270 if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
271
272 /* Execution mode, node cannot already exist, node is temporary */
273
274 flags |= ACPI_NS_ERROR_IF_FOUND;
275
276 if (!
277 (walk_state->
278 parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
279 flags |= ACPI_NS_TEMPORARY;
280 }
281 }
282#ifdef ACPI_ASL_COMPILER
283
284 /*
285 * Do not open a scope for AML_EXTERNAL_OP
286 * acpi_ns_lookup can open a new scope based on the object type
287 * of this op. AML_EXTERNAL_OP is a declaration rather than a
288 * definition. In the case that this external is a method object,
289 * acpi_ns_lookup will open a new scope. However, an AML_EXTERNAL_OP
290 * associated with the ACPI_TYPE_METHOD is a declaration, rather than
291 * a definition. Flags is set to avoid opening a scope for any
292 * AML_EXTERNAL_OP.
293 */
294 if (walk_state->opcode == AML_EXTERNAL_OP) {
295 flags |= ACPI_NS_DONT_OPEN_SCOPE;
296 }
297#endif
298
299 /* Add new entry or lookup existing entry */
300
301 status =
302 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
303 object_type, ACPI_IMODE_LOAD_PASS2, flags,
304 walk_state, &node);
305
306 if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) {
307 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
308 "***New Node [%4.4s] %p is temporary\n",
309 acpi_ut_get_node_name(node), node));
310 }
311 break;
312 }
313
314 if (ACPI_FAILURE(status)) {
315 ACPI_ERROR_NAMESPACE(walk_state->scope_info,
316 buffer_ptr, status);
317 return_ACPI_STATUS(status);
318 }
319
320 if (!op) {
321
322 /* Create a new op */
323
324 op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
325 if (!op) {
326 return_ACPI_STATUS(AE_NO_MEMORY);
327 }
328
329 /* Initialize the new op */
330
331 if (node) {
332 op->named.name = node->name.integer;
333 }
334 *out_op = op;
335 }
336
337 /*
338 * Put the Node in the "op" object that the parser uses, so we
339 * can get it again quickly when this scope is closed
340 */
341 op->common.node = node;
342 return_ACPI_STATUS(status);
343}
344
345/*******************************************************************************
346 *
347 * FUNCTION: acpi_ds_load2_end_op
348 *
349 * PARAMETERS: walk_state - Current state of the parse tree walk
350 *
351 * RETURN: Status
352 *
353 * DESCRIPTION: Ascending callback used during the loading of the namespace,
354 * both control methods and everything else.
355 *
356 ******************************************************************************/
357
358acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
359{
360 union acpi_parse_object *op;
361 acpi_status status = AE_OK;
362 acpi_object_type object_type;
363 struct acpi_namespace_node *node;
364 union acpi_parse_object *arg;
365 struct acpi_namespace_node *new_node;
366#ifndef ACPI_NO_METHOD_EXECUTION
367 u32 i;
368 u8 region_space;
369#endif
370
371 ACPI_FUNCTION_TRACE(ds_load2_end_op);
372
373 op = walk_state->op;
374 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
375 walk_state->op_info->name, op, walk_state));
376
377 /* Check if opcode had an associated namespace object */
378
379 if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
380 return_ACPI_STATUS(AE_OK);
381 }
382
383 if (op->common.aml_opcode == AML_SCOPE_OP) {
384 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
385 "Ending scope Op=%p State=%p\n", op,
386 walk_state));
387 }
388
389 object_type = walk_state->op_info->object_type;
390
391 /*
392 * Get the Node/name from the earlier lookup
393 * (It was saved in the *op structure)
394 */
395 node = op->common.node;
396
397 /*
398 * Put the Node on the object stack (Contains the ACPI Name of
399 * this object)
400 */
401 walk_state->operands[0] = (void *)node;
402 walk_state->num_operands = 1;
403
404 /* Pop the scope stack */
405
406 if (acpi_ns_opens_scope(object_type) &&
407 (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
408 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
409 "(%s) Popping scope for Op %p\n",
410 acpi_ut_get_type_name(object_type), op));
411
412 status = acpi_ds_scope_stack_pop(walk_state);
413 if (ACPI_FAILURE(status)) {
414 goto cleanup;
415 }
416 }
417
418 /*
419 * Named operations are as follows:
420 *
421 * AML_ALIAS
422 * AML_BANKFIELD
423 * AML_CREATEBITFIELD
424 * AML_CREATEBYTEFIELD
425 * AML_CREATEDWORDFIELD
426 * AML_CREATEFIELD
427 * AML_CREATEQWORDFIELD
428 * AML_CREATEWORDFIELD
429 * AML_DATA_REGION
430 * AML_DEVICE
431 * AML_EVENT
432 * AML_FIELD
433 * AML_INDEXFIELD
434 * AML_METHOD
435 * AML_METHODCALL
436 * AML_MUTEX
437 * AML_NAME
438 * AML_NAMEDFIELD
439 * AML_OPREGION
440 * AML_POWERRES
441 * AML_PROCESSOR
442 * AML_SCOPE
443 * AML_THERMALZONE
444 */
445
446 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
447 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
448 acpi_ps_get_opcode_name(op->common.aml_opcode),
449 walk_state, op, node));
450
451 /* Decode the opcode */
452
453 arg = op->common.value.arg;
454
455 switch (walk_state->op_info->type) {
456#ifndef ACPI_NO_METHOD_EXECUTION
457
458 case AML_TYPE_CREATE_FIELD:
459 /*
460 * Create the field object, but the field buffer and index must
461 * be evaluated later during the execution phase
462 */
463 status = acpi_ds_create_buffer_field(op, walk_state);
464 break;
465
466 case AML_TYPE_NAMED_FIELD:
467 /*
468 * If we are executing a method, initialize the field
469 */
470 if (walk_state->method_node) {
471 status = acpi_ds_init_field_objects(op, walk_state);
472 }
473
474 switch (op->common.aml_opcode) {
475 case AML_INDEX_FIELD_OP:
476
477 status =
478 acpi_ds_create_index_field(op,
479 (acpi_handle)arg->common.
480 node, walk_state);
481 break;
482
483 case AML_BANK_FIELD_OP:
484
485 status =
486 acpi_ds_create_bank_field(op, arg->common.node,
487 walk_state);
488 break;
489
490 case AML_FIELD_OP:
491
492 status =
493 acpi_ds_create_field(op, arg->common.node,
494 walk_state);
495 break;
496
497 default:
498
499 /* All NAMED_FIELD opcodes must be handled above */
500 break;
501 }
502 break;
503
504 case AML_TYPE_NAMED_SIMPLE:
505
506 status = acpi_ds_create_operands(walk_state, arg);
507 if (ACPI_FAILURE(status)) {
508 goto cleanup;
509 }
510
511 switch (op->common.aml_opcode) {
512 case AML_PROCESSOR_OP:
513
514 status = acpi_ex_create_processor(walk_state);
515 break;
516
517 case AML_POWER_RESOURCE_OP:
518
519 status = acpi_ex_create_power_resource(walk_state);
520 break;
521
522 case AML_MUTEX_OP:
523
524 status = acpi_ex_create_mutex(walk_state);
525 break;
526
527 case AML_EVENT_OP:
528
529 status = acpi_ex_create_event(walk_state);
530 break;
531
532 case AML_ALIAS_OP:
533
534 status = acpi_ex_create_alias(walk_state);
535 break;
536
537 default:
538
539 /* Unknown opcode */
540
541 status = AE_OK;
542 goto cleanup;
543 }
544
545 /* Delete operands */
546
547 for (i = 1; i < walk_state->num_operands; i++) {
548 acpi_ut_remove_reference(walk_state->operands[i]);
549 walk_state->operands[i] = NULL;
550 }
551
552 break;
553#endif /* ACPI_NO_METHOD_EXECUTION */
554
555 case AML_TYPE_NAMED_COMPLEX:
556
557 switch (op->common.aml_opcode) {
558#ifndef ACPI_NO_METHOD_EXECUTION
559 case AML_REGION_OP:
560 case AML_DATA_REGION_OP:
561
562 if (op->common.aml_opcode == AML_REGION_OP) {
563 region_space = (acpi_adr_space_type)
564 ((op->common.value.arg)->common.value.
565 integer);
566 } else {
567 region_space = ACPI_ADR_SPACE_DATA_TABLE;
568 }
569
570 /*
571 * The op_region is not fully parsed at this time. The only valid
572 * argument is the space_id. (We must save the address of the
573 * AML of the address and length operands)
574 *
575 * If we have a valid region, initialize it. The namespace is
576 * unlocked at this point.
577 *
578 * Need to unlock interpreter if it is locked (if we are running
579 * a control method), in order to allow _REG methods to be run
580 * during acpi_ev_initialize_region.
581 */
582 if (walk_state->method_node) {
583 /*
584 * Executing a method: initialize the region and unlock
585 * the interpreter
586 */
587 status = acpi_ex_create_region(op->named.data,
588 op->named.length,
589 region_space,
590 walk_state);
591 if (ACPI_FAILURE(status)) {
592 return_ACPI_STATUS(status);
593 }
594 }
595
596 status =
597 acpi_ev_initialize_region
598 (acpi_ns_get_attached_object(node));
599 break;
600
601 case AML_NAME_OP:
602
603 status = acpi_ds_create_node(walk_state, node, op);
604 break;
605
606 case AML_METHOD_OP:
607 /*
608 * method_op pkg_length name_string method_flags term_list
609 *
610 * Note: We must create the method node/object pair as soon as we
611 * see the method declaration. This allows later pass1 parsing
612 * of invocations of the method (need to know the number of
613 * arguments.)
614 */
615 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
616 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
617 walk_state, op, op->named.node));
618
619 if (!acpi_ns_get_attached_object(op->named.node)) {
620 walk_state->operands[0] =
621 ACPI_CAST_PTR(void, op->named.node);
622 walk_state->num_operands = 1;
623
624 status =
625 acpi_ds_create_operands(walk_state,
626 op->common.value.
627 arg);
628 if (ACPI_SUCCESS(status)) {
629 status =
630 acpi_ex_create_method(op->named.
631 data,
632 op->named.
633 length,
634 walk_state);
635 }
636
637 walk_state->operands[0] = NULL;
638 walk_state->num_operands = 0;
639
640 if (ACPI_FAILURE(status)) {
641 return_ACPI_STATUS(status);
642 }
643 }
644 break;
645
646#endif /* ACPI_NO_METHOD_EXECUTION */
647
648 default:
649
650 /* All NAMED_COMPLEX opcodes must be handled above */
651 break;
652 }
653 break;
654
655 case AML_CLASS_INTERNAL:
656
657 /* case AML_INT_NAMEPATH_OP: */
658 break;
659
660 case AML_CLASS_METHOD_CALL:
661
662 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
663 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
664 walk_state, op, node));
665
666 /*
667 * Lookup the method name and save the Node
668 */
669 status =
670 acpi_ns_lookup(walk_state->scope_info,
671 arg->common.value.string, ACPI_TYPE_ANY,
672 ACPI_IMODE_LOAD_PASS2,
673 ACPI_NS_SEARCH_PARENT |
674 ACPI_NS_DONT_OPEN_SCOPE, walk_state,
675 &(new_node));
676 if (ACPI_SUCCESS(status)) {
677 /*
678 * Make sure that what we found is indeed a method
679 * We didn't search for a method on purpose, to see if the name
680 * would resolve
681 */
682 if (new_node->type != ACPI_TYPE_METHOD) {
683 status = AE_AML_OPERAND_TYPE;
684 }
685
686 /* We could put the returned object (Node) on the object stack for
687 * later, but for now, we will put it in the "op" object that the
688 * parser uses, so we can get it again at the end of this scope
689 */
690 op->common.node = new_node;
691 } else {
692 ACPI_ERROR_NAMESPACE(walk_state->scope_info,
693 arg->common.value.string, status);
694 }
695 break;
696
697 default:
698
699 break;
700 }
701
702cleanup:
703
704 /* Remove the Node pushed at the very beginning */
705
706 walk_state->operands[0] = NULL;
707 walk_state->num_operands = 0;
708 return_ACPI_STATUS(status);
709}