1 /******************************************************************************
3 * Module Name: dswload - Dispatcher namespace load callbacks
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2007, R. Byron Moore
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
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.
44 #include <acpi/acpi.h>
45 #include <acpi/acparser.h>
46 #include <acpi/amlcode.h>
47 #include <acpi/acdispat.h>
48 #include <acpi/acinterp.h>
49 #include <acpi/acnamesp.h>
50 #include <acpi/acevents.h>
52 #ifdef ACPI_ASL_COMPILER
53 #include <acpi/acdisasm.h>
56 #define _COMPONENT ACPI_DISPATCHER
57 ACPI_MODULE_NAME("dswload")
59 /*******************************************************************************
61 * FUNCTION: acpi_ds_init_callbacks
63 * PARAMETERS: walk_state - Current state of the parse tree walk
64 * pass_number - 1, 2, or 3
68 * DESCRIPTION: Init walk state callbacks
70 ******************************************************************************/
72 acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number)
75 switch (pass_number) {
77 walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
78 ACPI_PARSE_DELETE_TREE;
79 walk_state->descending_callback = acpi_ds_load1_begin_op;
80 walk_state->ascending_callback = acpi_ds_load1_end_op;
84 walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
85 ACPI_PARSE_DELETE_TREE;
86 walk_state->descending_callback = acpi_ds_load2_begin_op;
87 walk_state->ascending_callback = acpi_ds_load2_end_op;
91 #ifndef ACPI_NO_METHOD_EXECUTION
92 walk_state->parse_flags |= ACPI_PARSE_EXECUTE |
93 ACPI_PARSE_DELETE_TREE;
94 walk_state->descending_callback = acpi_ds_exec_begin_op;
95 walk_state->ascending_callback = acpi_ds_exec_end_op;
100 return (AE_BAD_PARAMETER);
106 /*******************************************************************************
108 * FUNCTION: acpi_ds_load1_begin_op
110 * PARAMETERS: walk_state - Current state of the parse tree walk
111 * out_op - Where to return op if a new one is created
115 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
117 ******************************************************************************/
120 acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
121 union acpi_parse_object ** out_op)
123 union acpi_parse_object *op;
124 struct acpi_namespace_node *node;
126 acpi_object_type object_type;
130 ACPI_FUNCTION_TRACE(ds_load1_begin_op);
133 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
136 /* We are only interested in opcodes that have an associated name */
139 if (!(walk_state->op_info->flags & AML_NAMED)) {
141 return_ACPI_STATUS(AE_OK);
144 /* Check if this object has already been installed in the namespace */
146 if (op->common.node) {
148 return_ACPI_STATUS(AE_OK);
152 path = acpi_ps_get_next_namestring(&walk_state->parser_state);
154 /* Map the raw opcode into an internal object type */
156 object_type = walk_state->op_info->object_type;
158 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
159 "State=%p Op=%p [%s]\n", walk_state, op,
160 acpi_ut_get_type_name(object_type)));
162 switch (walk_state->opcode) {
166 * The target name of the Scope() operator must exist at this point so
167 * that we can actually open the scope to enter new names underneath it.
168 * Allow search-to-root for single namesegs.
171 acpi_ns_lookup(walk_state->scope_info, path, object_type,
172 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
173 walk_state, &(node));
174 #ifdef ACPI_ASL_COMPILER
175 if (status == AE_NOT_FOUND) {
178 * Target of Scope() not found. Generate an External for it, and
179 * insert the name into the namespace.
181 acpi_dm_add_to_external_list(path, ACPI_TYPE_DEVICE, 0);
183 acpi_ns_lookup(walk_state->scope_info, path,
184 object_type, ACPI_IMODE_LOAD_PASS1,
185 ACPI_NS_SEARCH_PARENT, walk_state,
189 if (ACPI_FAILURE(status)) {
190 ACPI_ERROR_NAMESPACE(path, status);
191 return_ACPI_STATUS(status);
195 * Check to make sure that the target is
196 * one of the opcodes that actually opens a scope
198 switch (node->type) {
200 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
201 case ACPI_TYPE_DEVICE:
202 case ACPI_TYPE_POWER:
203 case ACPI_TYPE_PROCESSOR:
204 case ACPI_TYPE_THERMAL:
206 /* These are acceptable types */
209 case ACPI_TYPE_INTEGER:
210 case ACPI_TYPE_STRING:
211 case ACPI_TYPE_BUFFER:
214 * These types we will allow, but we will change the type. This
215 * enables some existing code of the form:
218 * Scope (DEB) { ... }
220 * Note: silently change the type here. On the second pass, we will report
223 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
224 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
226 acpi_ut_get_type_name(node->type)));
228 node->type = ACPI_TYPE_ANY;
229 walk_state->scope_info->common.value = ACPI_TYPE_ANY;
234 /* All other types are an error */
237 "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)",
238 acpi_ut_get_type_name(node->type), path));
240 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
246 * For all other named opcodes, we will enter the name into
249 * Setup the search flags.
250 * Since we are entering a name into the namespace, we do not want to
251 * enable the search-to-root upsearch.
253 * There are only two conditions where it is acceptable that the name
255 * 1) the Scope() operator can reopen a scoping object that was
256 * previously defined (Scope, Method, Device, etc.)
257 * 2) Whenever we are parsing a deferred opcode (op_region, Buffer,
258 * buffer_field, or Package), the name of the object is already
261 if (walk_state->deferred_node) {
263 /* This name is already in the namespace, get the node */
265 node = walk_state->deferred_node;
271 * If we are executing a method, do not create any namespace objects
272 * during the load phase, only during execution.
274 if (walk_state->method_node) {
280 flags = ACPI_NS_NO_UPSEARCH;
281 if ((walk_state->opcode != AML_SCOPE_OP) &&
282 (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) {
283 flags |= ACPI_NS_ERROR_IF_FOUND;
284 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
285 "[%s] Cannot already exist\n",
286 acpi_ut_get_type_name(object_type)));
288 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
289 "[%s] Both Find or Create allowed\n",
290 acpi_ut_get_type_name(object_type)));
294 * Enter the named type into the internal namespace. We enter the name
295 * as we go downward in the parse tree. Any necessary subobjects that
296 * involve arguments to the opcode must be created as we go back up the
300 acpi_ns_lookup(walk_state->scope_info, path, object_type,
301 ACPI_IMODE_LOAD_PASS1, flags, walk_state,
303 if (ACPI_FAILURE(status)) {
304 if (status == AE_ALREADY_EXISTS) {
306 /* The name already exists in this scope */
308 if (node->flags & ANOBJ_IS_EXTERNAL) {
310 * Allow one create on an object or segment that was
311 * previously declared External
313 node->flags &= ~ANOBJ_IS_EXTERNAL;
314 node->type = (u8) object_type;
316 /* Just retyped a node, probably will need to open a scope */
318 if (acpi_ns_opens_scope(object_type)) {
320 acpi_ds_scope_stack_push
323 if (ACPI_FAILURE(status)) {
333 if (ACPI_FAILURE(status)) {
334 ACPI_ERROR_NAMESPACE(path, status);
335 return_ACPI_STATUS(status);
345 /* Create a new op */
347 op = acpi_ps_alloc_op(walk_state->opcode);
349 return_ACPI_STATUS(AE_NO_MEMORY);
353 /* Initialize the op */
355 #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY))
356 op->named.path = ACPI_CAST_PTR(u8, path);
361 * Put the Node in the "op" object that the parser uses, so we
362 * can get it again quickly when this scope is closed
364 op->common.node = node;
365 op->named.name = node->name.integer;
368 acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state),
371 return_ACPI_STATUS(status);
374 /*******************************************************************************
376 * FUNCTION: acpi_ds_load1_end_op
378 * PARAMETERS: walk_state - Current state of the parse tree walk
382 * DESCRIPTION: Ascending callback used during the loading of the namespace,
383 * both control methods and everything else.
385 ******************************************************************************/
387 acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
389 union acpi_parse_object *op;
390 acpi_object_type object_type;
391 acpi_status status = AE_OK;
393 ACPI_FUNCTION_TRACE(ds_load1_end_op);
396 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
399 /* We are only interested in opcodes that have an associated name */
401 if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) {
402 return_ACPI_STATUS(AE_OK);
405 /* Get the object type to determine if we should pop the scope */
407 object_type = walk_state->op_info->object_type;
409 #ifndef ACPI_NO_METHOD_EXECUTION
410 if (walk_state->op_info->flags & AML_FIELD) {
412 * If we are executing a method, do not create any namespace objects
413 * during the load phase, only during execution.
415 if (!walk_state->method_node) {
416 if (walk_state->opcode == AML_FIELD_OP ||
417 walk_state->opcode == AML_BANK_FIELD_OP ||
418 walk_state->opcode == AML_INDEX_FIELD_OP) {
420 acpi_ds_init_field_objects(op, walk_state);
423 return_ACPI_STATUS(status);
427 * If we are executing a method, do not create any namespace objects
428 * during the load phase, only during execution.
430 if (!walk_state->method_node) {
431 if (op->common.aml_opcode == AML_REGION_OP) {
433 acpi_ex_create_region(op->named.data,
435 (acpi_adr_space_type) ((op->
443 if (ACPI_FAILURE(status)) {
444 return_ACPI_STATUS(status);
446 } else if (op->common.aml_opcode == AML_DATA_REGION_OP) {
448 acpi_ex_create_region(op->named.data,
452 if (ACPI_FAILURE(status)) {
453 return_ACPI_STATUS(status);
459 if (op->common.aml_opcode == AML_NAME_OP) {
461 /* For Name opcode, get the object type from the argument */
463 if (op->common.value.arg) {
464 object_type = (acpi_ps_get_opcode_info((op->common.
470 /* Set node type if we have a namespace node */
472 if (op->common.node) {
473 op->common.node->type = (u8) object_type;
479 * If we are executing a method, do not create any namespace objects
480 * during the load phase, only during execution.
482 if (!walk_state->method_node) {
483 if (op->common.aml_opcode == AML_METHOD_OP) {
485 * method_op pkg_length name_string method_flags term_list
487 * Note: We must create the method node/object pair as soon as we
488 * see the method declaration. This allows later pass1 parsing
489 * of invocations of the method (need to know the number of
492 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
493 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
494 walk_state, op, op->named.node));
496 if (!acpi_ns_get_attached_object(op->named.node)) {
497 walk_state->operands[0] =
498 ACPI_CAST_PTR(void, op->named.node);
499 walk_state->num_operands = 1;
502 acpi_ds_create_operands(walk_state,
505 if (ACPI_SUCCESS(status)) {
507 acpi_ex_create_method(op->named.
514 walk_state->operands[0] = NULL;
515 walk_state->num_operands = 0;
517 if (ACPI_FAILURE(status)) {
518 return_ACPI_STATUS(status);
524 /* Pop the scope stack (only if loading a table) */
526 if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) {
527 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
528 "(%s): Popping scope for Op %p\n",
529 acpi_ut_get_type_name(object_type), op));
531 status = acpi_ds_scope_stack_pop(walk_state);
534 return_ACPI_STATUS(status);
537 /*******************************************************************************
539 * FUNCTION: acpi_ds_load2_begin_op
541 * PARAMETERS: walk_state - Current state of the parse tree walk
542 * out_op - Wher to return op if a new one is created
546 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
548 ******************************************************************************/
551 acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
552 union acpi_parse_object **out_op)
554 union acpi_parse_object *op;
555 struct acpi_namespace_node *node;
557 acpi_object_type object_type;
561 ACPI_FUNCTION_TRACE(ds_load2_begin_op);
564 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
568 if ((walk_state->control_state) &&
569 (walk_state->control_state->common.state ==
570 ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
572 /* We are executing a while loop outside of a method */
574 status = acpi_ds_exec_begin_op(walk_state, out_op);
575 return_ACPI_STATUS(status);
578 /* We only care about Namespace opcodes here */
580 if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
581 (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
582 (!(walk_state->op_info->flags & AML_NAMED))) {
583 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
584 if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
585 (walk_state->op_info->class == AML_CLASS_CONTROL)) {
586 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
587 "Begin/EXEC: %s (fl %8.8X)\n",
588 walk_state->op_info->name,
589 walk_state->op_info->flags));
591 /* Executing a type1 or type2 opcode outside of a method */
594 acpi_ds_exec_begin_op(walk_state, out_op);
595 return_ACPI_STATUS(status);
598 return_ACPI_STATUS(AE_OK);
601 /* Get the name we are going to enter or lookup in the namespace */
603 if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
605 /* For Namepath op, get the path string */
607 buffer_ptr = op->common.value.string;
610 /* No name, just exit */
612 return_ACPI_STATUS(AE_OK);
615 /* Get name from the op */
617 buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
620 /* Get the namestring from the raw AML */
623 acpi_ps_get_next_namestring(&walk_state->parser_state);
626 /* Map the opcode into an internal object type */
628 object_type = walk_state->op_info->object_type;
630 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
631 "State=%p Op=%p Type=%X\n", walk_state, op,
634 switch (walk_state->opcode) {
636 case AML_BANK_FIELD_OP:
637 case AML_INDEX_FIELD_OP:
643 case AML_INT_NAMEPATH_OP:
645 * The name_path is an object reference to an existing object.
646 * Don't enter the name into the namespace, but look it up
650 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
651 object_type, ACPI_IMODE_EXECUTE,
652 ACPI_NS_SEARCH_PARENT, walk_state, &(node));
657 * The Path is an object reference to an existing object.
658 * Don't enter the name into the namespace, but look it up
662 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
663 object_type, ACPI_IMODE_EXECUTE,
664 ACPI_NS_SEARCH_PARENT, walk_state, &(node));
665 if (ACPI_FAILURE(status)) {
666 #ifdef ACPI_ASL_COMPILER
667 if (status == AE_NOT_FOUND) {
670 ACPI_ERROR_NAMESPACE(buffer_ptr, status);
673 ACPI_ERROR_NAMESPACE(buffer_ptr, status);
675 return_ACPI_STATUS(status);
679 * We must check to make sure that the target is
680 * one of the opcodes that actually opens a scope
682 switch (node->type) {
684 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
685 case ACPI_TYPE_DEVICE:
686 case ACPI_TYPE_POWER:
687 case ACPI_TYPE_PROCESSOR:
688 case ACPI_TYPE_THERMAL:
690 /* These are acceptable types */
693 case ACPI_TYPE_INTEGER:
694 case ACPI_TYPE_STRING:
695 case ACPI_TYPE_BUFFER:
698 * These types we will allow, but we will change the type. This
699 * enables some existing code of the form:
702 * Scope (DEB) { ... }
704 ACPI_WARNING((AE_INFO,
705 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)",
707 acpi_ut_get_type_name(node->type)));
709 node->type = ACPI_TYPE_ANY;
710 walk_state->scope_info->common.value = ACPI_TYPE_ANY;
715 /* All other types are an error */
718 "Invalid type (%s) for target of Scope operator [%4.4s]",
719 acpi_ut_get_type_name(node->type),
722 return (AE_AML_OPERAND_TYPE);
728 /* All other opcodes */
730 if (op && op->common.node) {
732 /* This op/node was previously entered into the namespace */
734 node = op->common.node;
736 if (acpi_ns_opens_scope(object_type)) {
738 acpi_ds_scope_stack_push(node, object_type,
740 if (ACPI_FAILURE(status)) {
741 return_ACPI_STATUS(status);
745 return_ACPI_STATUS(AE_OK);
749 * Enter the named type into the internal namespace. We enter the name
750 * as we go downward in the parse tree. Any necessary subobjects that
751 * involve arguments to the opcode must be created as we go back up the
754 * Note: Name may already exist if we are executing a deferred opcode.
756 if (walk_state->deferred_node) {
758 /* This name is already in the namespace, get the node */
760 node = walk_state->deferred_node;
765 flags = ACPI_NS_NO_UPSEARCH;
766 if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
768 /* Execution mode, node cannot already exist, node is temporary */
770 flags |= (ACPI_NS_ERROR_IF_FOUND | ACPI_NS_TEMPORARY);
773 /* Add new entry or lookup existing entry */
776 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
777 object_type, ACPI_IMODE_LOAD_PASS2, flags,
782 if (ACPI_FAILURE(status)) {
783 ACPI_ERROR_NAMESPACE(buffer_ptr, status);
784 return_ACPI_STATUS(status);
789 /* Create a new op */
791 op = acpi_ps_alloc_op(walk_state->opcode);
793 return_ACPI_STATUS(AE_NO_MEMORY);
796 /* Initialize the new op */
799 op->named.name = node->name.integer;
805 * Put the Node in the "op" object that the parser uses, so we
806 * can get it again quickly when this scope is closed
808 op->common.node = node;
809 return_ACPI_STATUS(status);
812 /*******************************************************************************
814 * FUNCTION: acpi_ds_load2_end_op
816 * PARAMETERS: walk_state - Current state of the parse tree walk
820 * DESCRIPTION: Ascending callback used during the loading of the namespace,
821 * both control methods and everything else.
823 ******************************************************************************/
825 acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
827 union acpi_parse_object *op;
828 acpi_status status = AE_OK;
829 acpi_object_type object_type;
830 struct acpi_namespace_node *node;
831 union acpi_parse_object *arg;
832 struct acpi_namespace_node *new_node;
833 #ifndef ACPI_NO_METHOD_EXECUTION
838 ACPI_FUNCTION_TRACE(ds_load2_end_op);
841 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
842 walk_state->op_info->name, op, walk_state));
844 /* Check if opcode had an associated namespace object */
846 if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
847 #ifndef ACPI_NO_METHOD_EXECUTION
848 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
849 /* No namespace object. Executable opcode? */
851 if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
852 (walk_state->op_info->class == AML_CLASS_CONTROL)) {
853 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
854 "End/EXEC: %s (fl %8.8X)\n",
855 walk_state->op_info->name,
856 walk_state->op_info->flags));
858 /* Executing a type1 or type2 opcode outside of a method */
860 status = acpi_ds_exec_end_op(walk_state);
861 return_ACPI_STATUS(status);
865 return_ACPI_STATUS(AE_OK);
868 if (op->common.aml_opcode == AML_SCOPE_OP) {
869 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
870 "Ending scope Op=%p State=%p\n", op,
874 object_type = walk_state->op_info->object_type;
877 * Get the Node/name from the earlier lookup
878 * (It was saved in the *op structure)
880 node = op->common.node;
883 * Put the Node on the object stack (Contains the ACPI Name of
886 walk_state->operands[0] = (void *)node;
887 walk_state->num_operands = 1;
889 /* Pop the scope stack */
891 if (acpi_ns_opens_scope(object_type) &&
892 (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
893 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
894 "(%s) Popping scope for Op %p\n",
895 acpi_ut_get_type_name(object_type), op));
897 status = acpi_ds_scope_stack_pop(walk_state);
898 if (ACPI_FAILURE(status)) {
904 * Named operations are as follows:
909 * AML_CREATEBYTEFIELD
910 * AML_CREATEDWORDFIELD
912 * AML_CREATEQWORDFIELD
913 * AML_CREATEWORDFIELD
931 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
932 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
933 acpi_ps_get_opcode_name(op->common.aml_opcode),
934 walk_state, op, node));
936 /* Decode the opcode */
938 arg = op->common.value.arg;
940 switch (walk_state->op_info->type) {
941 #ifndef ACPI_NO_METHOD_EXECUTION
943 case AML_TYPE_CREATE_FIELD:
945 * Create the field object, but the field buffer and index must
946 * be evaluated later during the execution phase
948 status = acpi_ds_create_buffer_field(op, walk_state);
951 case AML_TYPE_NAMED_FIELD:
953 * If we are executing a method, initialize the field
955 if (walk_state->method_node) {
956 status = acpi_ds_init_field_objects(op, walk_state);
959 switch (op->common.aml_opcode) {
960 case AML_INDEX_FIELD_OP:
963 acpi_ds_create_index_field(op,
965 common.node, walk_state);
968 case AML_BANK_FIELD_OP:
971 acpi_ds_create_bank_field(op, arg->common.node,
978 acpi_ds_create_field(op, arg->common.node,
983 /* All NAMED_FIELD opcodes must be handled above */
988 case AML_TYPE_NAMED_SIMPLE:
990 status = acpi_ds_create_operands(walk_state, arg);
991 if (ACPI_FAILURE(status)) {
995 switch (op->common.aml_opcode) {
996 case AML_PROCESSOR_OP:
998 status = acpi_ex_create_processor(walk_state);
1001 case AML_POWER_RES_OP:
1003 status = acpi_ex_create_power_resource(walk_state);
1008 status = acpi_ex_create_mutex(walk_state);
1013 status = acpi_ex_create_event(walk_state);
1018 status = acpi_ex_create_alias(walk_state);
1022 /* Unknown opcode */
1028 /* Delete operands */
1030 for (i = 1; i < walk_state->num_operands; i++) {
1031 acpi_ut_remove_reference(walk_state->operands[i]);
1032 walk_state->operands[i] = NULL;
1036 #endif /* ACPI_NO_METHOD_EXECUTION */
1038 case AML_TYPE_NAMED_COMPLEX:
1040 switch (op->common.aml_opcode) {
1041 #ifndef ACPI_NO_METHOD_EXECUTION
1043 case AML_DATA_REGION_OP:
1045 if (op->common.aml_opcode == AML_REGION_OP) {
1046 region_space = (acpi_adr_space_type)
1047 ((op->common.value.arg)->common.value.
1050 region_space = REGION_DATA_TABLE;
1054 * If we are executing a method, initialize the region
1056 if (walk_state->method_node) {
1058 acpi_ex_create_region(op->named.data,
1062 if (ACPI_FAILURE(status)) {
1068 * The op_region is not fully parsed at this time. Only valid
1069 * argument is the space_id. (We must save the address of the
1070 * AML of the address and length operands)
1074 * If we have a valid region, initialize it
1075 * Namespace is NOT locked at this point.
1078 acpi_ev_initialize_region
1079 (acpi_ns_get_attached_object(node), FALSE);
1080 if (ACPI_FAILURE(status)) {
1082 * If AE_NOT_EXIST is returned, it is not fatal
1083 * because many regions get created before a handler
1084 * is installed for said region.
1086 if (AE_NOT_EXIST == status) {
1094 status = acpi_ds_create_node(walk_state, node, op);
1099 * method_op pkg_length name_string method_flags term_list
1101 * Note: We must create the method node/object pair as soon as we
1102 * see the method declaration. This allows later pass1 parsing
1103 * of invocations of the method (need to know the number of
1106 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
1107 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
1108 walk_state, op, op->named.node));
1110 if (!acpi_ns_get_attached_object(op->named.node)) {
1111 walk_state->operands[0] =
1112 ACPI_CAST_PTR(void, op->named.node);
1113 walk_state->num_operands = 1;
1116 acpi_ds_create_operands(walk_state,
1119 if (ACPI_SUCCESS(status)) {
1121 acpi_ex_create_method(op->named.
1127 walk_state->operands[0] = NULL;
1128 walk_state->num_operands = 0;
1130 if (ACPI_FAILURE(status)) {
1131 return_ACPI_STATUS(status);
1136 #endif /* ACPI_NO_METHOD_EXECUTION */
1139 /* All NAMED_COMPLEX opcodes must be handled above */
1144 case AML_CLASS_INTERNAL:
1146 /* case AML_INT_NAMEPATH_OP: */
1149 case AML_CLASS_METHOD_CALL:
1151 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
1152 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
1153 walk_state, op, node));
1156 * Lookup the method name and save the Node
1159 acpi_ns_lookup(walk_state->scope_info,
1160 arg->common.value.string, ACPI_TYPE_ANY,
1161 ACPI_IMODE_LOAD_PASS2,
1162 ACPI_NS_SEARCH_PARENT |
1163 ACPI_NS_DONT_OPEN_SCOPE, walk_state,
1165 if (ACPI_SUCCESS(status)) {
1167 * Make sure that what we found is indeed a method
1168 * We didn't search for a method on purpose, to see if the name
1171 if (new_node->type != ACPI_TYPE_METHOD) {
1172 status = AE_AML_OPERAND_TYPE;
1175 /* We could put the returned object (Node) on the object stack for
1176 * later, but for now, we will put it in the "op" object that the
1177 * parser uses, so we can get it again at the end of this scope
1179 op->common.node = new_node;
1181 ACPI_ERROR_NAMESPACE(arg->common.value.string, status);
1191 /* Remove the Node pushed at the very beginning */
1193 walk_state->operands[0] = NULL;
1194 walk_state->num_operands = 0;
1195 return_ACPI_STATUS(status);