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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dsinit - Object initialization namespace walk | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
6c9deb72 | 8 | * Copyright (C) 2000 - 2007, R. Byron Moore |
1da177e4 LT |
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 | ||
1da177e4 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/acdispat.h> | |
46 | #include <acpi/acnamesp.h> | |
f3d2e786 | 47 | #include <acpi/actables.h> |
1da177e4 LT |
48 | |
49 | #define _COMPONENT ACPI_DISPATCHER | |
4be44fcd | 50 | ACPI_MODULE_NAME("dsinit") |
1da177e4 | 51 | |
44f6c012 | 52 | /* Local prototypes */ |
44f6c012 | 53 | static acpi_status |
4be44fcd LB |
54 | acpi_ds_init_one_object(acpi_handle obj_handle, |
55 | u32 level, void *context, void **return_value); | |
1da177e4 LT |
56 | |
57 | /******************************************************************************* | |
58 | * | |
59 | * FUNCTION: acpi_ds_init_one_object | |
60 | * | |
44f6c012 | 61 | * PARAMETERS: obj_handle - Node for the object |
1da177e4 LT |
62 | * Level - Current nesting level |
63 | * Context - Points to a init info struct | |
64 | * return_value - Not used | |
65 | * | |
66 | * RETURN: Status | |
67 | * | |
68 | * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object | |
69 | * within the namespace. | |
70 | * | |
71 | * Currently, the only objects that require initialization are: | |
72 | * 1) Methods | |
73 | * 2) Operation Regions | |
74 | * | |
75 | ******************************************************************************/ | |
76 | ||
44f6c012 | 77 | static acpi_status |
4be44fcd LB |
78 | acpi_ds_init_one_object(acpi_handle obj_handle, |
79 | u32 level, void *context, void **return_value) | |
1da177e4 | 80 | { |
4be44fcd LB |
81 | struct acpi_init_walk_info *info = |
82 | (struct acpi_init_walk_info *)context; | |
83 | struct acpi_namespace_node *node = | |
84 | (struct acpi_namespace_node *)obj_handle; | |
85 | acpi_object_type type; | |
86 | acpi_status status; | |
1da177e4 | 87 | |
4a90c7e8 | 88 | ACPI_FUNCTION_ENTRY(); |
1da177e4 LT |
89 | |
90 | /* | |
0c9938cc | 91 | * We are only interested in NS nodes owned by the table that |
1da177e4 LT |
92 | * was just loaded |
93 | */ | |
f3d2e786 | 94 | if (node->owner_id != info->owner_id) { |
1da177e4 LT |
95 | return (AE_OK); |
96 | } | |
97 | ||
98 | info->object_count++; | |
99 | ||
100 | /* And even then, we are only interested in a few object types */ | |
101 | ||
4be44fcd | 102 | type = acpi_ns_get_type(obj_handle); |
1da177e4 LT |
103 | |
104 | switch (type) { | |
105 | case ACPI_TYPE_REGION: | |
106 | ||
4be44fcd LB |
107 | status = acpi_ds_initialize_region(obj_handle); |
108 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
109 | ACPI_EXCEPTION((AE_INFO, status, |
110 | "During Region initialization %p [%4.4s]", | |
111 | obj_handle, | |
112 | acpi_ut_get_node_name(obj_handle))); | |
1da177e4 LT |
113 | } |
114 | ||
115 | info->op_region_count++; | |
116 | break; | |
117 | ||
1da177e4 LT |
118 | case ACPI_TYPE_METHOD: |
119 | ||
0c9938cc | 120 | info->method_count++; |
1da177e4 LT |
121 | break; |
122 | ||
1da177e4 LT |
123 | case ACPI_TYPE_DEVICE: |
124 | ||
125 | info->device_count++; | |
126 | break; | |
127 | ||
1da177e4 LT |
128 | default: |
129 | break; | |
130 | } | |
131 | ||
132 | /* | |
133 | * We ignore errors from above, and always return OK, since | |
134 | * we don't want to abort the walk on a single error. | |
135 | */ | |
136 | return (AE_OK); | |
137 | } | |
138 | ||
1da177e4 LT |
139 | /******************************************************************************* |
140 | * | |
141 | * FUNCTION: acpi_ds_initialize_objects | |
142 | * | |
143 | * PARAMETERS: table_desc - Descriptor for parent ACPI table | |
144 | * start_node - Root of subtree to be initialized. | |
145 | * | |
146 | * RETURN: Status | |
147 | * | |
b229cf92 | 148 | * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any |
1da177e4 LT |
149 | * necessary initialization on the objects found therein |
150 | * | |
151 | ******************************************************************************/ | |
152 | ||
153 | acpi_status | |
f3d2e786 | 154 | acpi_ds_initialize_objects(acpi_native_uint table_index, |
4be44fcd | 155 | struct acpi_namespace_node * start_node) |
1da177e4 | 156 | { |
4be44fcd LB |
157 | acpi_status status; |
158 | struct acpi_init_walk_info info; | |
f3d2e786 BM |
159 | struct acpi_table_header *table; |
160 | acpi_owner_id owner_id; | |
1da177e4 | 161 | |
b229cf92 | 162 | ACPI_FUNCTION_TRACE(ds_initialize_objects); |
1da177e4 | 163 | |
f3d2e786 BM |
164 | status = acpi_tb_get_owner_id(table_index, &owner_id); |
165 | if (ACPI_FAILURE(status)) { | |
166 | return_ACPI_STATUS(status); | |
167 | } | |
168 | ||
4be44fcd LB |
169 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
170 | "**** Starting initialization of namespace objects ****\n")); | |
171 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "Parsing all Control Methods:")); | |
1da177e4 | 172 | |
4be44fcd | 173 | info.method_count = 0; |
1da177e4 | 174 | info.op_region_count = 0; |
4be44fcd LB |
175 | info.object_count = 0; |
176 | info.device_count = 0; | |
f3d2e786 BM |
177 | info.table_index = table_index; |
178 | info.owner_id = owner_id; | |
1da177e4 LT |
179 | |
180 | /* Walk entire namespace from the supplied root */ | |
181 | ||
4be44fcd LB |
182 | status = acpi_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX, |
183 | acpi_ds_init_one_object, &info, NULL); | |
184 | if (ACPI_FAILURE(status)) { | |
b229cf92 | 185 | ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace")); |
1da177e4 LT |
186 | } |
187 | ||
f3d2e786 BM |
188 | status = acpi_get_table_by_index(table_index, &table); |
189 | if (ACPI_FAILURE(status)) { | |
190 | return_ACPI_STATUS(status); | |
191 | } | |
192 | ||
4be44fcd LB |
193 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, |
194 | "\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n", | |
f3d2e786 | 195 | table->signature, owner_id, info.object_count, |
4be44fcd LB |
196 | info.device_count, info.method_count, |
197 | info.op_region_count)); | |
1da177e4 | 198 | |
4be44fcd LB |
199 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
200 | "%hd Methods, %hd Regions\n", info.method_count, | |
201 | info.op_region_count)); | |
1da177e4 | 202 | |
4be44fcd | 203 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 204 | } |