1 /******************************************************************************
2 *
3 * Module Name: dsinit - Object initialization namespace walk
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, Intel Corp.
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 #define __DSINIT_C__
45
46 #include "acpi.h"
47 #include "accommon.h"
48 #include "acdispat.h"
49 #include "acnamesp.h"
50 #include "actables.h"
51
52 #define _COMPONENT ACPI_DISPATCHER
53 ACPI_MODULE_NAME ("dsinit")
54
55 /* Local prototypes */
56
57 static ACPI_STATUS
58 AcpiDsInitOneObject (
59 ACPI_HANDLE ObjHandle,
60 UINT32 Level,
61 void *Context,
62 void **ReturnValue);
63
64
65 /*******************************************************************************
66 *
67 * FUNCTION: AcpiDsInitOneObject
68 *
69 * PARAMETERS: ObjHandle - Node for the object
70 * Level - Current nesting level
71 * Context - Points to a init info struct
72 * ReturnValue - Not used
73 *
74 * RETURN: Status
75 *
76 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
77 * within the namespace.
78 *
79 * Currently, the only objects that require initialization are:
80 * 1) Methods
81 * 2) Operation Regions
82 *
83 ******************************************************************************/
84
85 static ACPI_STATUS
86 AcpiDsInitOneObject (
87 ACPI_HANDLE ObjHandle,
88 UINT32 Level,
89 void *Context,
90 void **ReturnValue)
91 {
92 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
93 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
94 ACPI_OBJECT_TYPE Type;
95 ACPI_STATUS Status;
96
97
98 ACPI_FUNCTION_ENTRY ();
99
100
101 /*
102 * We are only interested in NS nodes owned by the table that
103 * was just loaded
104 */
105 if (Node->OwnerId != Info->OwnerId)
106 {
107 return (AE_OK);
108 }
109
110 Info->ObjectCount++;
111
112 /* And even then, we are only interested in a few object types */
113
114 Type = AcpiNsGetType (ObjHandle);
115
116 switch (Type)
117 {
118 case ACPI_TYPE_REGION:
119
120 Status = AcpiDsInitializeRegion (ObjHandle);
121 if (ACPI_FAILURE (Status))
122 {
123 ACPI_EXCEPTION ((AE_INFO, Status,
124 "During Region initialization %p [%4.4s]",
125 ObjHandle, AcpiUtGetNodeName (ObjHandle)));
126 }
127
128 Info->OpRegionCount++;
129 break;
130
131
132 case ACPI_TYPE_METHOD:
133
134 Info->MethodCount++;
135 break;
136
137
138 case ACPI_TYPE_DEVICE:
139
140 Info->DeviceCount++;
141 break;
142
143
144 default:
145 break;
146 }
147
148 /*
149 * We ignore errors from above, and always return OK, since
150 * we don't want to abort the walk on a single error.
151 */
152 return (AE_OK);
153 }
154
155
156 /*******************************************************************************
157 *
158 * FUNCTION: AcpiDsInitializeObjects
159 *
160 * PARAMETERS: TableDesc - Descriptor for parent ACPI table
161 * StartNode - Root of subtree to be initialized.
162 *
163 * RETURN: Status
164 *
165 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
166 * necessary initialization on the objects found therein
167 *
168 ******************************************************************************/
169
170 ACPI_STATUS
171 AcpiDsInitializeObjects (
172 UINT32 TableIndex,
173 ACPI_NAMESPACE_NODE *StartNode)
174 {
175 ACPI_STATUS Status;
176 ACPI_INIT_WALK_INFO Info;
177 ACPI_TABLE_HEADER *Table;
178 ACPI_OWNER_ID OwnerId;
179
180
181 ACPI_FUNCTION_TRACE (DsInitializeObjects);
182
183
184 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
185 if (ACPI_FAILURE (Status))
186 {
187 return_ACPI_STATUS (Status);
188 }
189
190 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
191 "**** Starting initialization of namespace objects ****\n"));
192 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));
193
194 /* Set all init info to zero */
195
196 ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
197
198 Info.OwnerId = OwnerId;
199 Info.TableIndex = TableIndex;
200
201 /* Walk entire namespace from the supplied root */
202
203 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
204 if (ACPI_FAILURE (Status))
205 {
206 return_ACPI_STATUS (Status);
207 }
208
209 /*
210 * We don't use AcpiWalkNamespace since we do not want to acquire
211 * the namespace reader lock.
212 */
213 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
214 ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
215 if (ACPI_FAILURE (Status))
216 {
217 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
218 }
219 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
220
221 Status = AcpiGetTableByIndex (TableIndex, &Table);
222 if (ACPI_FAILURE (Status))
223 {
224 return_ACPI_STATUS (Status);
225 }
226
227 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
228 "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n",
229 Table->Signature, OwnerId, Info.ObjectCount,
230 Info.DeviceCount, Info.MethodCount, Info.OpRegionCount));
231
232 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
233 "%u Methods, %u Regions\n", Info.MethodCount, Info.OpRegionCount));
234
235 return_ACPI_STATUS (AE_OK);
236 }
237
238