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1/******************************************************************************
2 *
3 * Module Name: dswscope - Scope stack manipulation
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 "acdispat.h"
47
48#define _COMPONENT ACPI_DISPATCHER
49ACPI_MODULE_NAME("dswscope")
50
51/****************************************************************************
52 *
53 * FUNCTION: acpi_ds_scope_stack_clear
54 *
55 * PARAMETERS: walk_state - Current state
56 *
57 * RETURN: None
58 *
59 * DESCRIPTION: Pop (and free) everything on the scope stack except the
60 * root scope object (which remains at the stack top.)
61 *
62 ***************************************************************************/
63void acpi_ds_scope_stack_clear(struct acpi_walk_state *walk_state)
64{
65 union acpi_generic_state *scope_info;
66
67 ACPI_FUNCTION_NAME(ds_scope_stack_clear);
68
69 while (walk_state->scope_info) {
70
71 /* Pop a scope off the stack */
72
73 scope_info = walk_state->scope_info;
74 walk_state->scope_info = scope_info->scope.next;
75
76 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
77 "Popped object type (%s)\n",
78 acpi_ut_get_type_name(scope_info->common.
79 value)));
80 acpi_ut_delete_generic_state(scope_info);
81 }
82}
83
84/****************************************************************************
85 *
86 * FUNCTION: acpi_ds_scope_stack_push
87 *
88 * PARAMETERS: Node - Name to be made current
89 * Type - Type of frame being pushed
90 * walk_state - Current state
91 *
92 * RETURN: Status
93 *
94 * DESCRIPTION: Push the current scope on the scope stack, and make the
95 * passed Node current.
96 *
97 ***************************************************************************/
98
99acpi_status
100acpi_ds_scope_stack_push(struct acpi_namespace_node *node,
101 acpi_object_type type,
102 struct acpi_walk_state *walk_state)
103{
104 union acpi_generic_state *scope_info;
105 union acpi_generic_state *old_scope_info;
106
107 ACPI_FUNCTION_TRACE(ds_scope_stack_push);
108
109 if (!node) {
110
111 /* Invalid scope */
112
113 ACPI_ERROR((AE_INFO, "Null scope parameter"));
114 return_ACPI_STATUS(AE_BAD_PARAMETER);
115 }
116
117 /* Make sure object type is valid */
118
119 if (!acpi_ut_valid_object_type(type)) {
120 ACPI_WARNING((AE_INFO, "Invalid object type: 0x%X", type));
121 }
122
123 /* Allocate a new scope object */
124
125 scope_info = acpi_ut_create_generic_state();
126 if (!scope_info) {
127 return_ACPI_STATUS(AE_NO_MEMORY);
128 }
129
130 /* Init new scope object */
131
132 scope_info->common.descriptor_type = ACPI_DESC_TYPE_STATE_WSCOPE;
133 scope_info->scope.node = node;
134 scope_info->common.value = (u16) type;
135
136 walk_state->scope_depth++;
137
138 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
139 "[%.2d] Pushed scope ",
140 (u32) walk_state->scope_depth));
141
142 old_scope_info = walk_state->scope_info;
143 if (old_scope_info) {
144 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
145 "[%4.4s] (%s)",
146 acpi_ut_get_node_name(old_scope_info->
147 scope.node),
148 acpi_ut_get_type_name(old_scope_info->
149 common.value)));
150 } else {
151 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[\\___] (%s)", "ROOT"));
152 }
153
154 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
155 ", New scope -> [%4.4s] (%s)\n",
156 acpi_ut_get_node_name(scope_info->scope.node),
157 acpi_ut_get_type_name(scope_info->common.value)));
158
159 /* Push new scope object onto stack */
160
161 acpi_ut_push_generic_state(&walk_state->scope_info, scope_info);
162 return_ACPI_STATUS(AE_OK);
163}
164
165/****************************************************************************
166 *
167 * FUNCTION: acpi_ds_scope_stack_pop
168 *
169 * PARAMETERS: walk_state - Current state
170 *
171 * RETURN: Status
172 *
173 * DESCRIPTION: Pop the scope stack once.
174 *
175 ***************************************************************************/
176
177acpi_status acpi_ds_scope_stack_pop(struct acpi_walk_state *walk_state)
178{
179 union acpi_generic_state *scope_info;
180 union acpi_generic_state *new_scope_info;
181
182 ACPI_FUNCTION_TRACE(ds_scope_stack_pop);
183
184 /*
185 * Pop scope info object off the stack.
186 */
187 scope_info = acpi_ut_pop_generic_state(&walk_state->scope_info);
188 if (!scope_info) {
189 return_ACPI_STATUS(AE_STACK_UNDERFLOW);
190 }
191
192 walk_state->scope_depth--;
193
194 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
195 "[%.2d] Popped scope [%4.4s] (%s), New scope -> ",
196 (u32) walk_state->scope_depth,
197 acpi_ut_get_node_name(scope_info->scope.node),
198 acpi_ut_get_type_name(scope_info->common.value)));
199
200 new_scope_info = walk_state->scope_info;
201 if (new_scope_info) {
202 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
203 "[%4.4s] (%s)\n",
204 acpi_ut_get_node_name(new_scope_info->
205 scope.node),
206 acpi_ut_get_type_name(new_scope_info->
207 common.value)));
208 } else {
209 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[\\___] (ROOT)\n"));
210 }
211
212 acpi_ut_delete_generic_state(scope_info);
213 return_ACPI_STATUS(AE_OK);
214}
1/******************************************************************************
2 *
3 * Module Name: dswscope - Scope stack manipulation
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2016, 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 "acdispat.h"
47
48#define _COMPONENT ACPI_DISPATCHER
49ACPI_MODULE_NAME("dswscope")
50
51/****************************************************************************
52 *
53 * FUNCTION: acpi_ds_scope_stack_clear
54 *
55 * PARAMETERS: walk_state - Current state
56 *
57 * RETURN: None
58 *
59 * DESCRIPTION: Pop (and free) everything on the scope stack except the
60 * root scope object (which remains at the stack top.)
61 *
62 ***************************************************************************/
63void acpi_ds_scope_stack_clear(struct acpi_walk_state *walk_state)
64{
65 union acpi_generic_state *scope_info;
66
67 ACPI_FUNCTION_NAME(ds_scope_stack_clear);
68
69 while (walk_state->scope_info) {
70
71 /* Pop a scope off the stack */
72
73 scope_info = walk_state->scope_info;
74 walk_state->scope_info = scope_info->scope.next;
75
76 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
77 "Popped object type (%s)\n",
78 acpi_ut_get_type_name(scope_info->common.
79 value)));
80
81 acpi_ut_delete_generic_state(scope_info);
82 }
83}
84
85/****************************************************************************
86 *
87 * FUNCTION: acpi_ds_scope_stack_push
88 *
89 * PARAMETERS: node - Name to be made current
90 * type - Type of frame being pushed
91 * walk_state - Current state
92 *
93 * RETURN: Status
94 *
95 * DESCRIPTION: Push the current scope on the scope stack, and make the
96 * passed Node current.
97 *
98 ***************************************************************************/
99
100acpi_status
101acpi_ds_scope_stack_push(struct acpi_namespace_node *node,
102 acpi_object_type type,
103 struct acpi_walk_state *walk_state)
104{
105 union acpi_generic_state *scope_info;
106 union acpi_generic_state *old_scope_info;
107
108 ACPI_FUNCTION_TRACE(ds_scope_stack_push);
109
110 if (!node) {
111
112 /* Invalid scope */
113
114 ACPI_ERROR((AE_INFO, "Null scope parameter"));
115 return_ACPI_STATUS(AE_BAD_PARAMETER);
116 }
117
118 /* Make sure object type is valid */
119
120 if (!acpi_ut_valid_object_type(type)) {
121 ACPI_WARNING((AE_INFO, "Invalid object type: 0x%X", type));
122 }
123
124 /* Allocate a new scope object */
125
126 scope_info = acpi_ut_create_generic_state();
127 if (!scope_info) {
128 return_ACPI_STATUS(AE_NO_MEMORY);
129 }
130
131 /* Init new scope object */
132
133 scope_info->common.descriptor_type = ACPI_DESC_TYPE_STATE_WSCOPE;
134 scope_info->scope.node = node;
135 scope_info->common.value = (u16) type;
136
137 walk_state->scope_depth++;
138
139 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
140 "[%.2d] Pushed scope ",
141 (u32) walk_state->scope_depth));
142
143 old_scope_info = walk_state->scope_info;
144 if (old_scope_info) {
145 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
146 "[%4.4s] (%s)",
147 acpi_ut_get_node_name(old_scope_info->
148 scope.node),
149 acpi_ut_get_type_name(old_scope_info->
150 common.value)));
151 } else {
152 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[\\___] (%s)", "ROOT"));
153 }
154
155 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
156 ", New scope -> [%4.4s] (%s)\n",
157 acpi_ut_get_node_name(scope_info->scope.node),
158 acpi_ut_get_type_name(scope_info->common.value)));
159
160 /* Push new scope object onto stack */
161
162 acpi_ut_push_generic_state(&walk_state->scope_info, scope_info);
163 return_ACPI_STATUS(AE_OK);
164}
165
166/****************************************************************************
167 *
168 * FUNCTION: acpi_ds_scope_stack_pop
169 *
170 * PARAMETERS: walk_state - Current state
171 *
172 * RETURN: Status
173 *
174 * DESCRIPTION: Pop the scope stack once.
175 *
176 ***************************************************************************/
177
178acpi_status acpi_ds_scope_stack_pop(struct acpi_walk_state *walk_state)
179{
180 union acpi_generic_state *scope_info;
181 union acpi_generic_state *new_scope_info;
182
183 ACPI_FUNCTION_TRACE(ds_scope_stack_pop);
184
185 /*
186 * Pop scope info object off the stack.
187 */
188 scope_info = acpi_ut_pop_generic_state(&walk_state->scope_info);
189 if (!scope_info) {
190 return_ACPI_STATUS(AE_STACK_UNDERFLOW);
191 }
192
193 walk_state->scope_depth--;
194
195 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
196 "[%.2d] Popped scope [%4.4s] (%s), New scope -> ",
197 (u32) walk_state->scope_depth,
198 acpi_ut_get_node_name(scope_info->scope.node),
199 acpi_ut_get_type_name(scope_info->common.value)));
200
201 new_scope_info = walk_state->scope_info;
202 if (new_scope_info) {
203 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
204 "[%4.4s] (%s)\n",
205 acpi_ut_get_node_name(new_scope_info->
206 scope.node),
207 acpi_ut_get_type_name(new_scope_info->
208 common.value)));
209 } else {
210 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[\\___] (ROOT)\n"));
211 }
212
213 acpi_ut_delete_generic_state(scope_info);
214 return_ACPI_STATUS(AE_OK);
215}