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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 | ||
1da177e4 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/acdispat.h> | |
46 | #include <acpi/acnamesp.h> | |
47 | ||
48 | #define _COMPONENT ACPI_DISPATCHER | |
4be44fcd | 49 | ACPI_MODULE_NAME("dsinit") |
1da177e4 | 50 | |
44f6c012 | 51 | /* Local prototypes */ |
44f6c012 | 52 | static acpi_status |
4be44fcd LB |
53 | acpi_ds_init_one_object(acpi_handle obj_handle, |
54 | u32 level, void *context, void **return_value); | |
1da177e4 LT |
55 | |
56 | /******************************************************************************* | |
57 | * | |
58 | * FUNCTION: acpi_ds_init_one_object | |
59 | * | |
44f6c012 | 60 | * PARAMETERS: obj_handle - Node for the object |
1da177e4 LT |
61 | * Level - Current nesting level |
62 | * Context - Points to a init info struct | |
63 | * return_value - Not used | |
64 | * | |
65 | * RETURN: Status | |
66 | * | |
67 | * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object | |
68 | * within the namespace. | |
69 | * | |
70 | * Currently, the only objects that require initialization are: | |
71 | * 1) Methods | |
72 | * 2) Operation Regions | |
73 | * | |
74 | ******************************************************************************/ | |
75 | ||
44f6c012 | 76 | static acpi_status |
4be44fcd LB |
77 | acpi_ds_init_one_object(acpi_handle obj_handle, |
78 | u32 level, void *context, void **return_value) | |
1da177e4 | 79 | { |
4be44fcd LB |
80 | struct acpi_init_walk_info *info = |
81 | (struct acpi_init_walk_info *)context; | |
82 | struct acpi_namespace_node *node = | |
83 | (struct acpi_namespace_node *)obj_handle; | |
84 | acpi_object_type type; | |
85 | acpi_status status; | |
1da177e4 | 86 | |
4be44fcd | 87 | ACPI_FUNCTION_NAME("ds_init_one_object"); |
1da177e4 LT |
88 | |
89 | /* | |
0c9938cc | 90 | * We are only interested in NS nodes owned by the table that |
1da177e4 LT |
91 | * was just loaded |
92 | */ | |
0c9938cc | 93 | if (node->owner_id != info->table_desc->owner_id) { |
1da177e4 LT |
94 | return (AE_OK); |
95 | } | |
96 | ||
97 | info->object_count++; | |
98 | ||
99 | /* And even then, we are only interested in a few object types */ | |
100 | ||
4be44fcd | 101 | type = acpi_ns_get_type(obj_handle); |
1da177e4 LT |
102 | |
103 | switch (type) { | |
104 | case ACPI_TYPE_REGION: | |
105 | ||
4be44fcd LB |
106 | status = acpi_ds_initialize_region(obj_handle); |
107 | if (ACPI_FAILURE(status)) { | |
108 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
109 | "Region %p [%4.4s] - Init failure, %s\n", | |
110 | obj_handle, | |
111 | acpi_ut_get_node_name(obj_handle), | |
112 | acpi_format_exception(status))); | |
1da177e4 LT |
113 | } |
114 | ||
115 | info->op_region_count++; | |
116 | break; | |
117 | ||
1da177e4 LT |
118 | case ACPI_TYPE_METHOD: |
119 | ||
44f6c012 RM |
120 | /* |
121 | * Print a dot for each method unless we are going to print | |
122 | * the entire pathname | |
123 | */ | |
1da177e4 | 124 | if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) { |
4be44fcd | 125 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, ".")); |
1da177e4 LT |
126 | } |
127 | ||
128 | /* | |
129 | * Set the execution data width (32 or 64) based upon the | |
130 | * revision number of the parent ACPI table. | |
131 | * TBD: This is really for possible future support of integer width | |
132 | * on a per-table basis. Currently, we just use a global for the width. | |
133 | */ | |
134 | if (info->table_desc->pointer->revision == 1) { | |
0c9938cc | 135 | node->flags |= ANOBJ_DATA_WIDTH_32; |
1da177e4 LT |
136 | } |
137 | ||
138 | /* | |
139 | * Always parse methods to detect errors, we will delete | |
140 | * the parse tree below | |
141 | */ | |
4be44fcd LB |
142 | status = acpi_ds_parse_method(obj_handle); |
143 | if (ACPI_FAILURE(status)) { | |
144 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
145 | "\n+Method %p [%4.4s] - parse failure, %s\n", | |
146 | obj_handle, | |
147 | acpi_ut_get_node_name(obj_handle), | |
148 | acpi_format_exception(status))); | |
1da177e4 LT |
149 | |
150 | /* This parse failed, but we will continue parsing more methods */ | |
1da177e4 LT |
151 | } |
152 | ||
0c9938cc | 153 | info->method_count++; |
1da177e4 LT |
154 | break; |
155 | ||
1da177e4 LT |
156 | case ACPI_TYPE_DEVICE: |
157 | ||
158 | info->device_count++; | |
159 | break; | |
160 | ||
1da177e4 LT |
161 | default: |
162 | break; | |
163 | } | |
164 | ||
165 | /* | |
166 | * We ignore errors from above, and always return OK, since | |
167 | * we don't want to abort the walk on a single error. | |
168 | */ | |
169 | return (AE_OK); | |
170 | } | |
171 | ||
1da177e4 LT |
172 | /******************************************************************************* |
173 | * | |
174 | * FUNCTION: acpi_ds_initialize_objects | |
175 | * | |
176 | * PARAMETERS: table_desc - Descriptor for parent ACPI table | |
177 | * start_node - Root of subtree to be initialized. | |
178 | * | |
179 | * RETURN: Status | |
180 | * | |
181 | * DESCRIPTION: Walk the namespace starting at "start_node" and perform any | |
182 | * necessary initialization on the objects found therein | |
183 | * | |
184 | ******************************************************************************/ | |
185 | ||
186 | acpi_status | |
4be44fcd LB |
187 | acpi_ds_initialize_objects(struct acpi_table_desc * table_desc, |
188 | struct acpi_namespace_node * start_node) | |
1da177e4 | 189 | { |
4be44fcd LB |
190 | acpi_status status; |
191 | struct acpi_init_walk_info info; | |
1da177e4 | 192 | |
4be44fcd | 193 | ACPI_FUNCTION_TRACE("ds_initialize_objects"); |
1da177e4 | 194 | |
4be44fcd LB |
195 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
196 | "**** Starting initialization of namespace objects ****\n")); | |
197 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "Parsing all Control Methods:")); | |
1da177e4 | 198 | |
4be44fcd | 199 | info.method_count = 0; |
1da177e4 | 200 | info.op_region_count = 0; |
4be44fcd LB |
201 | info.object_count = 0; |
202 | info.device_count = 0; | |
203 | info.table_desc = table_desc; | |
1da177e4 LT |
204 | |
205 | /* Walk entire namespace from the supplied root */ | |
206 | ||
4be44fcd LB |
207 | status = acpi_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX, |
208 | acpi_ds_init_one_object, &info, NULL); | |
209 | if (ACPI_FAILURE(status)) { | |
210 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "walk_namespace failed, %s\n", | |
211 | acpi_format_exception(status))); | |
1da177e4 LT |
212 | } |
213 | ||
4be44fcd LB |
214 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, |
215 | "\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n", | |
216 | table_desc->pointer->signature, | |
217 | table_desc->owner_id, info.object_count, | |
218 | info.device_count, info.method_count, | |
219 | info.op_region_count)); | |
1da177e4 | 220 | |
4be44fcd LB |
221 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
222 | "%hd Methods, %hd Regions\n", info.method_count, | |
223 | info.op_region_count)); | |
1da177e4 | 224 | |
4be44fcd | 225 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 226 | } |