1/******************************************************************************
2 *
3 * Module Name: dsinit - Object initialization namespace walk
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2016, 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#include "acpi.h"
45#include "accommon.h"
46#include "acdispat.h"
47#include "acnamesp.h"
48#include "actables.h"
49
50#define _COMPONENT ACPI_DISPATCHER
51 ACPI_MODULE_NAME ("dsinit")
52
53
54/* Local prototypes */
55
56static ACPI_STATUS
57AcpiDsInitOneObject (
58 ACPI_HANDLE ObjHandle,
59 UINT32 Level,
60 void *Context,
61 void **ReturnValue);
62
63
64/*******************************************************************************
65 *
66 * FUNCTION: AcpiDsInitOneObject
67 *
68 * PARAMETERS: ObjHandle - Node for the object
69 * Level - Current nesting level
70 * Context - Points to a init info struct
71 * ReturnValue - Not used
72 *
73 * RETURN: Status
74 *
75 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
76 * within the namespace.
77 *
78 * Currently, the only objects that require initialization are:
79 * 1) Methods
80 * 2) Operation Regions
81 *
82 ******************************************************************************/
83
84static ACPI_STATUS
85AcpiDsInitOneObject (
86 ACPI_HANDLE ObjHandle,
87 UINT32 Level,
88 void *Context,
89 void **ReturnValue)
90{
91 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
92 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
93 ACPI_STATUS Status;
94 ACPI_OPERAND_OBJECT *ObjDesc;
95
96
97 ACPI_FUNCTION_ENTRY ();
98
99
100 /*
101 * We are only interested in NS nodes owned by the table that
102 * was just loaded
103 */
104 if (Node->OwnerId != Info->OwnerId)
105 {
106 return (AE_OK);
107 }
108
109 Info->ObjectCount++;
110
111 /* And even then, we are only interested in a few object types */
112
113 switch (AcpiNsGetType (ObjHandle))
114 {
115 case ACPI_TYPE_REGION:
116
117 Status = AcpiDsInitializeRegion (ObjHandle);
118 if (ACPI_FAILURE (Status))
119 {
120 ACPI_EXCEPTION ((AE_INFO, Status,
121 "During Region initialization %p [%4.4s]",
122 ObjHandle, AcpiUtGetNodeName (ObjHandle)));
123 }
124
125 Info->OpRegionCount++;
126 break;
127
128 case ACPI_TYPE_METHOD:
129 /*
130 * Auto-serialization support. We will examine each method that is
131 * NotSerialized to determine if it creates any Named objects. If
132 * it does, it will be marked serialized to prevent problems if
133 * the method is entered by two or more threads and an attempt is
134 * made to create the same named object twice -- which results in
135 * an AE_ALREADY_EXISTS exception and method abort.
136 */
137 Info->MethodCount++;
138 ObjDesc = AcpiNsGetAttachedObject (Node);
139 if (!ObjDesc)
140 {
141 break;
142 }
143
144 /* Ignore if already serialized */
145
146 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
147 {
148 Info->SerialMethodCount++;
149 break;
150 }
151
152 if (AcpiGbl_AutoSerializeMethods)
153 {
154 /* Parse/scan method and serialize it if necessary */
155
156 AcpiDsAutoSerializeMethod (Node, ObjDesc);
157 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
158 {
159 /* Method was just converted to Serialized */
160
161 Info->SerialMethodCount++;
162 Info->SerializedMethodCount++;
163 break;
164 }
165 }
166
167 Info->NonSerialMethodCount++;
168 break;
169
170 case ACPI_TYPE_DEVICE:
171
172 Info->DeviceCount++;
173 break;
174
175 default:
176
177 break;
178 }
179
180 /*
181 * We ignore errors from above, and always return OK, since
182 * we don't want to abort the walk on a single error.
183 */
184 return (AE_OK);
185}
186
187
188/*******************************************************************************
189 *
190 * FUNCTION: AcpiDsInitializeObjects
191 *
192 * PARAMETERS: TableDesc - Descriptor for parent ACPI table
193 * StartNode - Root of subtree to be initialized.
194 *
195 * RETURN: Status
196 *
197 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
198 * necessary initialization on the objects found therein
199 *
200 ******************************************************************************/
201
202ACPI_STATUS
203AcpiDsInitializeObjects (
204 UINT32 TableIndex,
205 ACPI_NAMESPACE_NODE *StartNode)
206{
207 ACPI_STATUS Status;
208 ACPI_INIT_WALK_INFO Info;
209 ACPI_TABLE_HEADER *Table;
210 ACPI_OWNER_ID OwnerId;
211
212
213 ACPI_FUNCTION_TRACE (DsInitializeObjects);
214
215
216 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
217 if (ACPI_FAILURE (Status))
218 {
219 return_ACPI_STATUS (Status);
220 }
221
222 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
223 "**** Starting initialization of namespace objects ****\n"));
224
225 /* Set all init info to zero */
226
227 memset (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
228
229 Info.OwnerId = OwnerId;
230 Info.TableIndex = TableIndex;
231
232 /* Walk entire namespace from the supplied root */
233
234 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
235 if (ACPI_FAILURE (Status))
236 {
237 return_ACPI_STATUS (Status);
238 }
239
240 /*
241 * We don't use AcpiWalkNamespace since we do not want to acquire
242 * the namespace reader lock.
243 */
244 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
245 ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
246 if (ACPI_FAILURE (Status))
247 {
248 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
249 }
250 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
251
252 Status = AcpiGetTableByIndex (TableIndex, &Table);
253 if (ACPI_FAILURE (Status))
254 {
255 return_ACPI_STATUS (Status);
256 }
257
258 /* DSDT is always the first AML table */
259
260 if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT))
261 {
262 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
263 "\nInitializing Namespace objects:\n"));
264 }
265
266 /* Summary of objects initialized */
267
268 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
269 "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
270 "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
271 Table->Signature, Table->OemTableId, OwnerId, Info.ObjectCount,
272 Info.DeviceCount,Info.OpRegionCount, Info.MethodCount,
273 Info.SerialMethodCount, Info.NonSerialMethodCount,
274 Info.SerializedMethodCount));
275
276 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
277 Info.MethodCount, Info.OpRegionCount));
278
279 return_ACPI_STATUS (AE_OK);
280}
281