diff options
author | Len Brown <len.brown@intel.com> | 2009-01-09 00:13:17 -0500 |
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committer | Len Brown <len.brown@intel.com> | 2009-01-09 03:30:47 -0500 |
commit | 95b482a8d31116f3f5c2a5089569393234d06385 (patch) | |
tree | f32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/acpica/nsload.c | |
parent | 6620e0c49f577454b772fb381543d60ae53eb885 (diff) |
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/nsload.c')
-rw-r--r-- | drivers/acpi/acpica/nsload.c | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/nsload.c b/drivers/acpi/acpica/nsload.c new file mode 100644 index 000000000000..a6e92b31a06f --- /dev/null +++ b/drivers/acpi/acpica/nsload.c | |||
@@ -0,0 +1,315 @@ | |||
1 | /****************************************************************************** | ||
2 | * | ||
3 | * Module Name: nsload - namespace loading/expanding/contracting procedures | ||
4 | * | ||
5 | *****************************************************************************/ | ||
6 | |||
7 | /* | ||
8 | * Copyright (C) 2000 - 2008, 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 <acpi/accommon.h> | ||
46 | #include <acpi/acnamesp.h> | ||
47 | #include <acpi/acdispat.h> | ||
48 | #include <acpi/actables.h> | ||
49 | |||
50 | #define _COMPONENT ACPI_NAMESPACE | ||
51 | ACPI_MODULE_NAME("nsload") | ||
52 | |||
53 | /* Local prototypes */ | ||
54 | #ifdef ACPI_FUTURE_IMPLEMENTATION | ||
55 | acpi_status acpi_ns_unload_namespace(acpi_handle handle); | ||
56 | |||
57 | static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle); | ||
58 | #endif | ||
59 | |||
60 | #ifndef ACPI_NO_METHOD_EXECUTION | ||
61 | /******************************************************************************* | ||
62 | * | ||
63 | * FUNCTION: acpi_ns_load_table | ||
64 | * | ||
65 | * PARAMETERS: table_index - Index for table to be loaded | ||
66 | * Node - Owning NS node | ||
67 | * | ||
68 | * RETURN: Status | ||
69 | * | ||
70 | * DESCRIPTION: Load one ACPI table into the namespace | ||
71 | * | ||
72 | ******************************************************************************/ | ||
73 | |||
74 | acpi_status | ||
75 | acpi_ns_load_table(u32 table_index, struct acpi_namespace_node *node) | ||
76 | { | ||
77 | acpi_status status; | ||
78 | |||
79 | ACPI_FUNCTION_TRACE(ns_load_table); | ||
80 | |||
81 | /* | ||
82 | * Parse the table and load the namespace with all named | ||
83 | * objects found within. Control methods are NOT parsed | ||
84 | * at this time. In fact, the control methods cannot be | ||
85 | * parsed until the entire namespace is loaded, because | ||
86 | * if a control method makes a forward reference (call) | ||
87 | * to another control method, we can't continue parsing | ||
88 | * because we don't know how many arguments to parse next! | ||
89 | */ | ||
90 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); | ||
91 | if (ACPI_FAILURE(status)) { | ||
92 | return_ACPI_STATUS(status); | ||
93 | } | ||
94 | |||
95 | /* If table already loaded into namespace, just return */ | ||
96 | |||
97 | if (acpi_tb_is_table_loaded(table_index)) { | ||
98 | status = AE_ALREADY_EXISTS; | ||
99 | goto unlock; | ||
100 | } | ||
101 | |||
102 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | ||
103 | "**** Loading table into namespace ****\n")); | ||
104 | |||
105 | status = acpi_tb_allocate_owner_id(table_index); | ||
106 | if (ACPI_FAILURE(status)) { | ||
107 | goto unlock; | ||
108 | } | ||
109 | |||
110 | status = acpi_ns_parse_table(table_index, node); | ||
111 | if (ACPI_SUCCESS(status)) { | ||
112 | acpi_tb_set_table_loaded_flag(table_index, TRUE); | ||
113 | } else { | ||
114 | (void)acpi_tb_release_owner_id(table_index); | ||
115 | } | ||
116 | |||
117 | unlock: | ||
118 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); | ||
119 | |||
120 | if (ACPI_FAILURE(status)) { | ||
121 | return_ACPI_STATUS(status); | ||
122 | } | ||
123 | |||
124 | /* | ||
125 | * Now we can parse the control methods. We always parse | ||
126 | * them here for a sanity check, and if configured for | ||
127 | * just-in-time parsing, we delete the control method | ||
128 | * parse trees. | ||
129 | */ | ||
130 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | ||
131 | "**** Begin Table Method Parsing and Object Initialization ****\n")); | ||
132 | |||
133 | status = acpi_ds_initialize_objects(table_index, node); | ||
134 | |||
135 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | ||
136 | "**** Completed Table Method Parsing and Object Initialization ****\n")); | ||
137 | |||
138 | return_ACPI_STATUS(status); | ||
139 | } | ||
140 | |||
141 | #ifdef ACPI_OBSOLETE_FUNCTIONS | ||
142 | /******************************************************************************* | ||
143 | * | ||
144 | * FUNCTION: acpi_load_namespace | ||
145 | * | ||
146 | * PARAMETERS: None | ||
147 | * | ||
148 | * RETURN: Status | ||
149 | * | ||
150 | * DESCRIPTION: Load the name space from what ever is pointed to by DSDT. | ||
151 | * (DSDT points to either the BIOS or a buffer.) | ||
152 | * | ||
153 | ******************************************************************************/ | ||
154 | |||
155 | acpi_status acpi_ns_load_namespace(void) | ||
156 | { | ||
157 | acpi_status status; | ||
158 | |||
159 | ACPI_FUNCTION_TRACE(acpi_load_name_space); | ||
160 | |||
161 | /* There must be at least a DSDT installed */ | ||
162 | |||
163 | if (acpi_gbl_DSDT == NULL) { | ||
164 | ACPI_ERROR((AE_INFO, "DSDT is not in memory")); | ||
165 | return_ACPI_STATUS(AE_NO_ACPI_TABLES); | ||
166 | } | ||
167 | |||
168 | /* | ||
169 | * Load the namespace. The DSDT is required, | ||
170 | * but the SSDT and PSDT tables are optional. | ||
171 | */ | ||
172 | status = acpi_ns_load_table_by_type(ACPI_TABLE_ID_DSDT); | ||
173 | if (ACPI_FAILURE(status)) { | ||
174 | return_ACPI_STATUS(status); | ||
175 | } | ||
176 | |||
177 | /* Ignore exceptions from these */ | ||
178 | |||
179 | (void)acpi_ns_load_table_by_type(ACPI_TABLE_ID_SSDT); | ||
180 | (void)acpi_ns_load_table_by_type(ACPI_TABLE_ID_PSDT); | ||
181 | |||
182 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, | ||
183 | "ACPI Namespace successfully loaded at root %p\n", | ||
184 | acpi_gbl_root_node)); | ||
185 | |||
186 | return_ACPI_STATUS(status); | ||
187 | } | ||
188 | #endif | ||
189 | |||
190 | #ifdef ACPI_FUTURE_IMPLEMENTATION | ||
191 | /******************************************************************************* | ||
192 | * | ||
193 | * FUNCTION: acpi_ns_delete_subtree | ||
194 | * | ||
195 | * PARAMETERS: start_handle - Handle in namespace where search begins | ||
196 | * | ||
197 | * RETURNS Status | ||
198 | * | ||
199 | * DESCRIPTION: Walks the namespace starting at the given handle and deletes | ||
200 | * all objects, entries, and scopes in the entire subtree. | ||
201 | * | ||
202 | * Namespace/Interpreter should be locked or the subsystem should | ||
203 | * be in shutdown before this routine is called. | ||
204 | * | ||
205 | ******************************************************************************/ | ||
206 | |||
207 | static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle) | ||
208 | { | ||
209 | acpi_status status; | ||
210 | acpi_handle child_handle; | ||
211 | acpi_handle parent_handle; | ||
212 | acpi_handle next_child_handle; | ||
213 | acpi_handle dummy; | ||
214 | u32 level; | ||
215 | |||
216 | ACPI_FUNCTION_TRACE(ns_delete_subtree); | ||
217 | |||
218 | parent_handle = start_handle; | ||
219 | child_handle = NULL; | ||
220 | level = 1; | ||
221 | |||
222 | /* | ||
223 | * Traverse the tree of objects until we bubble back up | ||
224 | * to where we started. | ||
225 | */ | ||
226 | while (level > 0) { | ||
227 | |||
228 | /* Attempt to get the next object in this scope */ | ||
229 | |||
230 | status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle, | ||
231 | child_handle, &next_child_handle); | ||
232 | |||
233 | child_handle = next_child_handle; | ||
234 | |||
235 | /* Did we get a new object? */ | ||
236 | |||
237 | if (ACPI_SUCCESS(status)) { | ||
238 | |||
239 | /* Check if this object has any children */ | ||
240 | |||
241 | if (ACPI_SUCCESS | ||
242 | (acpi_get_next_object | ||
243 | (ACPI_TYPE_ANY, child_handle, NULL, &dummy))) { | ||
244 | /* | ||
245 | * There is at least one child of this object, | ||
246 | * visit the object | ||
247 | */ | ||
248 | level++; | ||
249 | parent_handle = child_handle; | ||
250 | child_handle = NULL; | ||
251 | } | ||
252 | } else { | ||
253 | /* | ||
254 | * No more children in this object, go back up to | ||
255 | * the object's parent | ||
256 | */ | ||
257 | level--; | ||
258 | |||
259 | /* Delete all children now */ | ||
260 | |||
261 | acpi_ns_delete_children(child_handle); | ||
262 | |||
263 | child_handle = parent_handle; | ||
264 | status = acpi_get_parent(parent_handle, &parent_handle); | ||
265 | if (ACPI_FAILURE(status)) { | ||
266 | return_ACPI_STATUS(status); | ||
267 | } | ||
268 | } | ||
269 | } | ||
270 | |||
271 | /* Now delete the starting object, and we are done */ | ||
272 | |||
273 | acpi_ns_delete_node(child_handle); | ||
274 | |||
275 | return_ACPI_STATUS(AE_OK); | ||
276 | } | ||
277 | |||
278 | /******************************************************************************* | ||
279 | * | ||
280 | * FUNCTION: acpi_ns_unload_name_space | ||
281 | * | ||
282 | * PARAMETERS: Handle - Root of namespace subtree to be deleted | ||
283 | * | ||
284 | * RETURN: Status | ||
285 | * | ||
286 | * DESCRIPTION: Shrinks the namespace, typically in response to an undocking | ||
287 | * event. Deletes an entire subtree starting from (and | ||
288 | * including) the given handle. | ||
289 | * | ||
290 | ******************************************************************************/ | ||
291 | |||
292 | acpi_status acpi_ns_unload_namespace(acpi_handle handle) | ||
293 | { | ||
294 | acpi_status status; | ||
295 | |||
296 | ACPI_FUNCTION_TRACE(ns_unload_name_space); | ||
297 | |||
298 | /* Parameter validation */ | ||
299 | |||
300 | if (!acpi_gbl_root_node) { | ||
301 | return_ACPI_STATUS(AE_NO_NAMESPACE); | ||
302 | } | ||
303 | |||
304 | if (!handle) { | ||
305 | return_ACPI_STATUS(AE_BAD_PARAMETER); | ||
306 | } | ||
307 | |||
308 | /* This function does the real work */ | ||
309 | |||
310 | status = acpi_ns_delete_subtree(handle); | ||
311 | |||
312 | return_ACPI_STATUS(status); | ||
313 | } | ||
314 | #endif | ||
315 | #endif | ||