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[ACPI] ACPICA 20050729 from Bob Moore
[karo-tx-linux.git] / drivers / acpi / dispatcher / dsinit.c
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
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
61
62 /*******************************************************************************
63  *
64  * FUNCTION:    acpi_ds_init_one_object
65  *
66  * PARAMETERS:  obj_handle      - Node for the object
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
82 static acpi_status
83 acpi_ds_init_one_object (
84         acpi_handle                     obj_handle,
85         u32                             level,
86         void                            *context,
87         void                            **return_value)
88 {
89         struct acpi_init_walk_info      *info = (struct acpi_init_walk_info *) context;
90         struct acpi_namespace_node      *node = (struct acpi_namespace_node *) obj_handle;
91         acpi_object_type                type;
92         acpi_status                     status;
93
94
95         ACPI_FUNCTION_NAME ("ds_init_one_object");
96
97
98         /*
99          * We are only interested in NS nodes owned by the table that
100          * was just loaded
101          */
102         if (node->owner_id != info->table_desc->owner_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)) {
117                         ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
118                                 "Region %p [%4.4s] - Init failure, %s\n",
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                 /*
130                  * Print a dot for each method unless we are going to print
131                  * the entire pathname
132                  */
133                 if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
134                         ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
135                 }
136
137                 /*
138                  * Set the execution data width (32 or 64) based upon the
139                  * revision number of the parent ACPI table.
140                  * TBD: This is really for possible future support of integer width
141                  * on a per-table basis. Currently, we just use a global for the width.
142                  */
143                 if (info->table_desc->pointer->revision == 1) {
144                         node->flags |= ANOBJ_DATA_WIDTH_32;
145                 }
146
147                 /*
148                  * Always parse methods to detect errors, we will delete
149                  * the parse tree below
150                  */
151                 status = acpi_ds_parse_method (obj_handle);
152                 if (ACPI_FAILURE (status)) {
153                         ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
154                                 "\n+Method %p [%4.4s] - parse failure, %s\n",
155                                 obj_handle, acpi_ut_get_node_name (obj_handle),
156                                 acpi_format_exception (status)));
157
158                         /* This parse failed, but we will continue parsing more methods */
159                 }
160
161                 info->method_count++;
162                 break;
163
164
165         case ACPI_TYPE_DEVICE:
166
167                 info->device_count++;
168                 break;
169
170
171         default:
172                 break;
173         }
174
175         /*
176          * We ignore errors from above, and always return OK, since
177          * we don't want to abort the walk on a single error.
178          */
179         return (AE_OK);
180 }
181
182
183 /*******************************************************************************
184  *
185  * FUNCTION:    acpi_ds_initialize_objects
186  *
187  * PARAMETERS:  table_desc      - Descriptor for parent ACPI table
188  *              start_node      - Root of subtree to be initialized.
189  *
190  * RETURN:      Status
191  *
192  * DESCRIPTION: Walk the namespace starting at "start_node" and perform any
193  *              necessary initialization on the objects found therein
194  *
195  ******************************************************************************/
196
197 acpi_status
198 acpi_ds_initialize_objects (
199         struct acpi_table_desc          *table_desc,
200         struct acpi_namespace_node      *start_node)
201 {
202         acpi_status                     status;
203         struct acpi_init_walk_info      info;
204
205
206         ACPI_FUNCTION_TRACE ("ds_initialize_objects");
207
208
209         ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
210                 "**** Starting initialization of namespace objects ****\n"));
211         ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));
212
213         info.method_count   = 0;
214         info.op_region_count = 0;
215         info.object_count   = 0;
216         info.device_count   = 0;
217         info.table_desc     = table_desc;
218
219         /* Walk entire namespace from the supplied root */
220
221         status = acpi_walk_namespace (ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
222                           acpi_ds_init_one_object, &info, NULL);
223         if (ACPI_FAILURE (status)) {
224                 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "walk_namespace failed, %s\n",
225                         acpi_format_exception (status)));
226         }
227
228         ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
229                 "\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n",
230                 table_desc->pointer->signature, table_desc->owner_id, info.object_count,
231                 info.device_count, info.method_count, info.op_region_count));
232
233         ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
234                 "%hd Methods, %hd Regions\n", info.method_count, info.op_region_count));
235
236         return_ACPI_STATUS (AE_OK);
237 }
238
239