Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dsinit - Object initialization namespace walk | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
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 | 44 | #include <acpi/acpi.h> |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acdispat.h" | |
47 | #include "acnamesp.h" | |
48 | #include "actables.h" | |
1da177e4 LT |
49 | |
50 | #define _COMPONENT ACPI_DISPATCHER | |
4be44fcd | 51 | ACPI_MODULE_NAME("dsinit") |
1da177e4 | 52 | |
44f6c012 | 53 | /* Local prototypes */ |
44f6c012 | 54 | static acpi_status |
4be44fcd LB |
55 | acpi_ds_init_one_object(acpi_handle obj_handle, |
56 | u32 level, void *context, void **return_value); | |
1da177e4 LT |
57 | |
58 | /******************************************************************************* | |
59 | * | |
60 | * FUNCTION: acpi_ds_init_one_object | |
61 | * | |
44f6c012 | 62 | * PARAMETERS: obj_handle - Node for the object |
ba494bee BM |
63 | * level - Current nesting level |
64 | * context - Points to a init info struct | |
1da177e4 LT |
65 | * return_value - Not used |
66 | * | |
67 | * RETURN: Status | |
68 | * | |
69 | * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object | |
70 | * within the namespace. | |
71 | * | |
72 | * Currently, the only objects that require initialization are: | |
73 | * 1) Methods | |
74 | * 2) Operation Regions | |
75 | * | |
76 | ******************************************************************************/ | |
77 | ||
44f6c012 | 78 | static acpi_status |
4be44fcd LB |
79 | acpi_ds_init_one_object(acpi_handle obj_handle, |
80 | u32 level, void *context, void **return_value) | |
1da177e4 | 81 | { |
4be44fcd LB |
82 | struct acpi_init_walk_info *info = |
83 | (struct acpi_init_walk_info *)context; | |
84 | struct acpi_namespace_node *node = | |
85 | (struct acpi_namespace_node *)obj_handle; | |
4be44fcd | 86 | acpi_status status; |
22b5afce | 87 | union acpi_operand_object *obj_desc; |
1da177e4 | 88 | |
4a90c7e8 | 89 | ACPI_FUNCTION_ENTRY(); |
1da177e4 LT |
90 | |
91 | /* | |
0c9938cc | 92 | * We are only interested in NS nodes owned by the table that |
1da177e4 LT |
93 | * was just loaded |
94 | */ | |
f3d2e786 | 95 | if (node->owner_id != info->owner_id) { |
1da177e4 LT |
96 | return (AE_OK); |
97 | } | |
98 | ||
99 | info->object_count++; | |
100 | ||
101 | /* And even then, we are only interested in a few object types */ | |
102 | ||
22b5afce | 103 | switch (acpi_ns_get_type(obj_handle)) { |
1da177e4 LT |
104 | case ACPI_TYPE_REGION: |
105 | ||
4be44fcd LB |
106 | status = acpi_ds_initialize_region(obj_handle); |
107 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
108 | ACPI_EXCEPTION((AE_INFO, status, |
109 | "During Region initialization %p [%4.4s]", | |
110 | obj_handle, | |
111 | acpi_ut_get_node_name(obj_handle))); | |
1da177e4 LT |
112 | } |
113 | ||
114 | info->op_region_count++; | |
115 | break; | |
116 | ||
1da177e4 | 117 | case ACPI_TYPE_METHOD: |
22b5afce BM |
118 | /* |
119 | * Auto-serialization support. We will examine each method that is | |
120 | * not_serialized to determine if it creates any Named objects. If | |
121 | * it does, it will be marked serialized to prevent problems if | |
122 | * the method is entered by two or more threads and an attempt is | |
123 | * made to create the same named object twice -- which results in | |
124 | * an AE_ALREADY_EXISTS exception and method abort. | |
125 | */ | |
0c9938cc | 126 | info->method_count++; |
22b5afce BM |
127 | obj_desc = acpi_ns_get_attached_object(node); |
128 | if (!obj_desc) { | |
129 | break; | |
130 | } | |
131 | ||
132 | /* Ignore if already serialized */ | |
133 | ||
134 | if (obj_desc->method.info_flags & ACPI_METHOD_SERIALIZED) { | |
135 | info->serial_method_count++; | |
136 | break; | |
137 | } | |
138 | ||
139 | if (acpi_gbl_auto_serialize_methods) { | |
140 | ||
141 | /* Parse/scan method and serialize it if necessary */ | |
142 | ||
143 | acpi_ds_auto_serialize_method(node, obj_desc); | |
144 | if (obj_desc->method. | |
145 | info_flags & ACPI_METHOD_SERIALIZED) { | |
146 | ||
147 | /* Method was just converted to Serialized */ | |
148 | ||
149 | info->serial_method_count++; | |
150 | info->serialized_method_count++; | |
151 | break; | |
152 | } | |
153 | } | |
154 | ||
155 | info->non_serial_method_count++; | |
1da177e4 LT |
156 | break; |
157 | ||
1da177e4 LT |
158 | case ACPI_TYPE_DEVICE: |
159 | ||
160 | info->device_count++; | |
161 | break; | |
162 | ||
1da177e4 | 163 | default: |
1d1ea1b7 | 164 | |
1da177e4 LT |
165 | break; |
166 | } | |
167 | ||
168 | /* | |
169 | * We ignore errors from above, and always return OK, since | |
170 | * we don't want to abort the walk on a single error. | |
171 | */ | |
172 | return (AE_OK); | |
173 | } | |
174 | ||
1da177e4 LT |
175 | /******************************************************************************* |
176 | * | |
177 | * FUNCTION: acpi_ds_initialize_objects | |
178 | * | |
179 | * PARAMETERS: table_desc - Descriptor for parent ACPI table | |
180 | * start_node - Root of subtree to be initialized. | |
181 | * | |
182 | * RETURN: Status | |
183 | * | |
b229cf92 | 184 | * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any |
1da177e4 LT |
185 | * necessary initialization on the objects found therein |
186 | * | |
187 | ******************************************************************************/ | |
188 | ||
189 | acpi_status | |
67a119f9 | 190 | acpi_ds_initialize_objects(u32 table_index, |
4be44fcd | 191 | struct acpi_namespace_node * start_node) |
1da177e4 | 192 | { |
4be44fcd LB |
193 | acpi_status status; |
194 | struct acpi_init_walk_info info; | |
f3d2e786 BM |
195 | struct acpi_table_header *table; |
196 | acpi_owner_id owner_id; | |
1da177e4 | 197 | |
b229cf92 | 198 | ACPI_FUNCTION_TRACE(ds_initialize_objects); |
1da177e4 | 199 | |
f3d2e786 BM |
200 | status = acpi_tb_get_owner_id(table_index, &owner_id); |
201 | if (ACPI_FAILURE(status)) { | |
202 | return_ACPI_STATUS(status); | |
203 | } | |
204 | ||
4be44fcd LB |
205 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
206 | "**** Starting initialization of namespace objects ****\n")); | |
1da177e4 | 207 | |
96b7b7ad AS |
208 | /* Set all init info to zero */ |
209 | ||
4fa4616e | 210 | memset(&info, 0, sizeof(struct acpi_init_walk_info)); |
96b7b7ad | 211 | |
f3d2e786 | 212 | info.owner_id = owner_id; |
96b7b7ad | 213 | info.table_index = table_index; |
1da177e4 LT |
214 | |
215 | /* Walk entire namespace from the supplied root */ | |
216 | ||
8a335a23 BM |
217 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); |
218 | if (ACPI_FAILURE(status)) { | |
219 | return_ACPI_STATUS(status); | |
220 | } | |
221 | ||
222 | /* | |
223 | * We don't use acpi_walk_namespace since we do not want to acquire | |
224 | * the namespace reader lock. | |
225 | */ | |
226 | status = | |
227 | acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX, | |
228 | ACPI_NS_WALK_UNLOCK, acpi_ds_init_one_object, | |
2263576c | 229 | NULL, &info, NULL); |
4be44fcd | 230 | if (ACPI_FAILURE(status)) { |
b229cf92 | 231 | ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace")); |
1da177e4 | 232 | } |
8a335a23 | 233 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); |
1da177e4 | 234 | |
f3d2e786 BM |
235 | status = acpi_get_table_by_index(table_index, &table); |
236 | if (ACPI_FAILURE(status)) { | |
237 | return_ACPI_STATUS(status); | |
238 | } | |
239 | ||
92b21a95 BM |
240 | /* DSDT is always the first AML table */ |
241 | ||
242 | if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT)) { | |
243 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, | |
244 | "\nInitializing Namespace objects:\n")); | |
245 | } | |
246 | ||
247 | /* Summary of objects initialized */ | |
248 | ||
4be44fcd | 249 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, |
1fad8738 | 250 | "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, " |
3c0503dd BM |
251 | "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n", |
252 | table->signature, table->oem_table_id, owner_id, | |
253 | info.object_count, info.device_count, | |
254 | info.op_region_count, info.method_count, | |
255 | info.serial_method_count, | |
22b5afce BM |
256 | info.non_serial_method_count, |
257 | info.serialized_method_count)); | |
1da177e4 | 258 | |
22b5afce BM |
259 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n", |
260 | info.method_count, info.op_region_count)); | |
1da177e4 | 261 | |
4be44fcd | 262 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 263 | } |