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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dsinit - Object initialization namespace walk | |
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/acdispat.h> | |
47 | #include <acpi/acnamesp.h> | |
48 | ||
49 | #define _COMPONENT ACPI_DISPATCHER | |
50 | ACPI_MODULE_NAME ("dsinit") | |
51 | ||
44f6c012 RM |
52 | /* Local prototypes */ |
53 | ||
54 | static acpi_status | |
55 | acpi_ds_init_one_object ( | |
56 | acpi_handle obj_handle, | |
57 | u32 level, | |
58 | void *context, | |
59 | void **return_value); | |
60 | ||
1da177e4 LT |
61 | |
62 | /******************************************************************************* | |
63 | * | |
64 | * FUNCTION: acpi_ds_init_one_object | |
65 | * | |
44f6c012 | 66 | * PARAMETERS: obj_handle - Node for the object |
1da177e4 LT |
67 | * Level - Current nesting level |
68 | * Context - Points to a init info struct | |
69 | * return_value - Not used | |
70 | * | |
71 | * RETURN: Status | |
72 | * | |
73 | * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object | |
74 | * within the namespace. | |
75 | * | |
76 | * Currently, the only objects that require initialization are: | |
77 | * 1) Methods | |
78 | * 2) Operation Regions | |
79 | * | |
80 | ******************************************************************************/ | |
81 | ||
44f6c012 | 82 | static acpi_status |
1da177e4 LT |
83 | acpi_ds_init_one_object ( |
84 | acpi_handle obj_handle, | |
85 | u32 level, | |
86 | void *context, | |
87 | void **return_value) | |
88 | { | |
89 | acpi_object_type type; | |
90 | acpi_status status; | |
91 | struct acpi_init_walk_info *info = (struct acpi_init_walk_info *) context; | |
92 | ||
93 | ||
94 | ACPI_FUNCTION_NAME ("ds_init_one_object"); | |
95 | ||
96 | ||
97 | /* | |
98 | * We are only interested in objects owned by the table that | |
99 | * was just loaded | |
100 | */ | |
101 | if (((struct acpi_namespace_node *) obj_handle)->owner_id != | |
102 | info->table_desc->table_id) { | |
103 | return (AE_OK); | |
104 | } | |
105 | ||
106 | info->object_count++; | |
107 | ||
108 | /* And even then, we are only interested in a few object types */ | |
109 | ||
110 | type = acpi_ns_get_type (obj_handle); | |
111 | ||
112 | switch (type) { | |
113 | case ACPI_TYPE_REGION: | |
114 | ||
115 | status = acpi_ds_initialize_region (obj_handle); | |
116 | if (ACPI_FAILURE (status)) { | |
44f6c012 RM |
117 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, |
118 | "Region %p [%4.4s] - Init failure, %s\n", | |
1da177e4 LT |
119 | obj_handle, acpi_ut_get_node_name (obj_handle), |
120 | acpi_format_exception (status))); | |
121 | } | |
122 | ||
123 | info->op_region_count++; | |
124 | break; | |
125 | ||
126 | ||
127 | case ACPI_TYPE_METHOD: | |
128 | ||
129 | info->method_count++; | |
130 | ||
44f6c012 RM |
131 | /* |
132 | * Print a dot for each method unless we are going to print | |
133 | * the entire pathname | |
134 | */ | |
1da177e4 LT |
135 | if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) { |
136 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); | |
137 | } | |
138 | ||
139 | /* | |
140 | * Set the execution data width (32 or 64) based upon the | |
141 | * revision number of the parent ACPI table. | |
142 | * TBD: This is really for possible future support of integer width | |
143 | * on a per-table basis. Currently, we just use a global for the width. | |
144 | */ | |
145 | if (info->table_desc->pointer->revision == 1) { | |
146 | ((struct acpi_namespace_node *) obj_handle)->flags |= ANOBJ_DATA_WIDTH_32; | |
147 | } | |
148 | ||
149 | /* | |
150 | * Always parse methods to detect errors, we will delete | |
151 | * the parse tree below | |
152 | */ | |
153 | status = acpi_ds_parse_method (obj_handle); | |
154 | if (ACPI_FAILURE (status)) { | |
44f6c012 RM |
155 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, |
156 | "Method %p [%4.4s] - parse failure, %s\n", | |
1da177e4 LT |
157 | obj_handle, acpi_ut_get_node_name (obj_handle), |
158 | acpi_format_exception (status))); | |
159 | ||
160 | /* This parse failed, but we will continue parsing more methods */ | |
161 | ||
162 | break; | |
163 | } | |
164 | ||
165 | /* | |
166 | * Delete the parse tree. We simply re-parse the method | |
167 | * for every execution since there isn't much overhead | |
168 | */ | |
169 | acpi_ns_delete_namespace_subtree (obj_handle); | |
44f6c012 RM |
170 | acpi_ns_delete_namespace_by_owner ( |
171 | ((struct acpi_namespace_node *) obj_handle)->object->method.owning_id); | |
1da177e4 LT |
172 | break; |
173 | ||
174 | ||
175 | case ACPI_TYPE_DEVICE: | |
176 | ||
177 | info->device_count++; | |
178 | break; | |
179 | ||
180 | ||
181 | default: | |
182 | break; | |
183 | } | |
184 | ||
185 | /* | |
186 | * We ignore errors from above, and always return OK, since | |
187 | * we don't want to abort the walk on a single error. | |
188 | */ | |
189 | return (AE_OK); | |
190 | } | |
191 | ||
192 | ||
193 | /******************************************************************************* | |
194 | * | |
195 | * FUNCTION: acpi_ds_initialize_objects | |
196 | * | |
197 | * PARAMETERS: table_desc - Descriptor for parent ACPI table | |
198 | * start_node - Root of subtree to be initialized. | |
199 | * | |
200 | * RETURN: Status | |
201 | * | |
202 | * DESCRIPTION: Walk the namespace starting at "start_node" and perform any | |
203 | * necessary initialization on the objects found therein | |
204 | * | |
205 | ******************************************************************************/ | |
206 | ||
207 | acpi_status | |
208 | acpi_ds_initialize_objects ( | |
209 | struct acpi_table_desc *table_desc, | |
210 | struct acpi_namespace_node *start_node) | |
211 | { | |
212 | acpi_status status; | |
213 | struct acpi_init_walk_info info; | |
214 | ||
215 | ||
216 | ACPI_FUNCTION_TRACE ("ds_initialize_objects"); | |
217 | ||
218 | ||
219 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
220 | "**** Starting initialization of namespace objects ****\n")); | |
221 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:")); | |
222 | ||
223 | info.method_count = 0; | |
224 | info.op_region_count = 0; | |
225 | info.object_count = 0; | |
226 | info.device_count = 0; | |
227 | info.table_desc = table_desc; | |
228 | ||
229 | /* Walk entire namespace from the supplied root */ | |
230 | ||
231 | status = acpi_walk_namespace (ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX, | |
232 | acpi_ds_init_one_object, &info, NULL); | |
233 | if (ACPI_FAILURE (status)) { | |
234 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "walk_namespace failed, %s\n", | |
235 | acpi_format_exception (status))); | |
236 | } | |
237 | ||
238 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, | |
239 | "\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n", | |
240 | table_desc->pointer->signature, table_desc->table_id, info.object_count, | |
241 | info.device_count, info.method_count, info.op_region_count)); | |
242 | ||
243 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
244 | "%hd Methods, %hd Regions\n", info.method_count, info.op_region_count)); | |
245 | ||
246 | return_ACPI_STATUS (AE_OK); | |
247 | } | |
248 | ||
249 |