1/******************************************************************************
2 *
3 * Module Name: dsinit - Object initialization namespace walk
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2013, 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 <contrib/dev/acpica/include/acpi.h>
47#include <contrib/dev/acpica/include/accommon.h>
48#include <contrib/dev/acpica/include/acdispat.h>
49#include <contrib/dev/acpica/include/acnamesp.h>
50#include <contrib/dev/acpica/include/actables.h>
51
52#define _COMPONENT          ACPI_DISPATCHER
53        ACPI_MODULE_NAME    ("dsinit")
54
55/* Local prototypes */
56
57static ACPI_STATUS
58AcpiDsInitOneObject (
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
85static ACPI_STATUS
86AcpiDsInitOneObject (
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    case ACPI_TYPE_METHOD:
132
133        Info->MethodCount++;
134        break;
135
136    case ACPI_TYPE_DEVICE:
137
138        Info->DeviceCount++;
139        break;
140
141    default:
142
143        break;
144    }
145
146    /*
147     * We ignore errors from above, and always return OK, since
148     * we don't want to abort the walk on a single error.
149     */
150    return (AE_OK);
151}
152
153
154/*******************************************************************************
155 *
156 * FUNCTION:    AcpiDsInitializeObjects
157 *
158 * PARAMETERS:  TableDesc       - Descriptor for parent ACPI table
159 *              StartNode       - Root of subtree to be initialized.
160 *
161 * RETURN:      Status
162 *
163 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
164 *              necessary initialization on the objects found therein
165 *
166 ******************************************************************************/
167
168ACPI_STATUS
169AcpiDsInitializeObjects (
170    UINT32                  TableIndex,
171    ACPI_NAMESPACE_NODE     *StartNode)
172{
173    ACPI_STATUS             Status;
174    ACPI_INIT_WALK_INFO     Info;
175    ACPI_TABLE_HEADER       *Table;
176    ACPI_OWNER_ID           OwnerId;
177
178
179    ACPI_FUNCTION_TRACE (DsInitializeObjects);
180
181
182    Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
183    if (ACPI_FAILURE (Status))
184    {
185        return_ACPI_STATUS (Status);
186    }
187
188    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
189        "**** Starting initialization of namespace objects ****\n"));
190    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));
191
192    /* Set all init info to zero */
193
194    ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
195
196    Info.OwnerId = OwnerId;
197    Info.TableIndex = TableIndex;
198
199    /* Walk entire namespace from the supplied root */
200
201    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
202    if (ACPI_FAILURE (Status))
203    {
204        return_ACPI_STATUS (Status);
205    }
206
207    /*
208     * We don't use AcpiWalkNamespace since we do not want to acquire
209     * the namespace reader lock.
210     */
211    Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
212                ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
213    if (ACPI_FAILURE (Status))
214    {
215        ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
216    }
217    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
218
219    Status = AcpiGetTableByIndex (TableIndex, &Table);
220    if (ACPI_FAILURE (Status))
221    {
222        return_ACPI_STATUS (Status);
223    }
224
225    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
226        "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n",
227        Table->Signature, OwnerId, Info.ObjectCount,
228        Info.DeviceCount, Info.MethodCount, Info.OpRegionCount));
229
230    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
231        "%u Methods, %u Regions\n", Info.MethodCount, Info.OpRegionCount));
232
233    return_ACPI_STATUS (AE_OK);
234}
235