xref: /titanic_41/usr/src/uts/intel/io/acpica/dispatcher/dsinit.c (revision de5d74c22760a6d2cefd94d0e7f0fd87214fb71f)
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 
56 static ACPI_STATUS
57 AcpiDsInitOneObject (
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 
84 static ACPI_STATUS
AcpiDsInitOneObject(ACPI_HANDLE ObjHandle,UINT32 Level,void * Context,void ** ReturnValue)85 AcpiDsInitOneObject (
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 
202 ACPI_STATUS
AcpiDsInitializeObjects(UINT32 TableIndex,ACPI_NAMESPACE_NODE * StartNode)203 AcpiDsInitializeObjects (
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