1 /******************************************************************************
3 * Module Name: dsinit - Object initialization namespace walk
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2014, Intel Corp.
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23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
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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>
52 #define _COMPONENT ACPI_DISPATCHER
53 ACPI_MODULE_NAME ("dsinit")
56 /* Local prototypes */
60 ACPI_HANDLE ObjHandle,
66 /*******************************************************************************
68 * FUNCTION: AcpiDsInitOneObject
70 * PARAMETERS: ObjHandle - Node for the object
71 * Level - Current nesting level
72 * Context - Points to a init info struct
73 * ReturnValue - Not used
77 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
78 * within the namespace.
80 * Currently, the only objects that require initialization are:
82 * 2) Operation Regions
84 ******************************************************************************/
88 ACPI_HANDLE ObjHandle,
93 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
94 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
96 ACPI_OPERAND_OBJECT *ObjDesc;
99 ACPI_FUNCTION_ENTRY ();
103 * We are only interested in NS nodes owned by the table that
106 if (Node->OwnerId != Info->OwnerId)
113 /* And even then, we are only interested in a few object types */
115 switch (AcpiNsGetType (ObjHandle))
117 case ACPI_TYPE_REGION:
119 Status = AcpiDsInitializeRegion (ObjHandle);
120 if (ACPI_FAILURE (Status))
122 ACPI_EXCEPTION ((AE_INFO, Status,
123 "During Region initialization %p [%4.4s]",
124 ObjHandle, AcpiUtGetNodeName (ObjHandle)));
127 Info->OpRegionCount++;
130 case ACPI_TYPE_METHOD:
132 * Auto-serialization support. We will examine each method that is
133 * NotSerialized to determine if it creates any Named objects. If
134 * it does, it will be marked serialized to prevent problems if
135 * the method is entered by two or more threads and an attempt is
136 * made to create the same named object twice -- which results in
137 * an AE_ALREADY_EXISTS exception and method abort.
140 ObjDesc = AcpiNsGetAttachedObject (Node);
146 /* Ignore if already serialized */
148 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
150 Info->SerialMethodCount++;
154 if (AcpiGbl_AutoSerializeMethods)
156 /* Parse/scan method and serialize it if necessary */
158 AcpiDsAutoSerializeMethod (Node, ObjDesc);
159 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
161 /* Method was just converted to Serialized */
163 Info->SerialMethodCount++;
164 Info->SerializedMethodCount++;
169 Info->NonSerialMethodCount++;
172 case ACPI_TYPE_DEVICE:
183 * We ignore errors from above, and always return OK, since
184 * we don't want to abort the walk on a single error.
190 /*******************************************************************************
192 * FUNCTION: AcpiDsInitializeObjects
194 * PARAMETERS: TableDesc - Descriptor for parent ACPI table
195 * StartNode - Root of subtree to be initialized.
199 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
200 * necessary initialization on the objects found therein
202 ******************************************************************************/
205 AcpiDsInitializeObjects (
207 ACPI_NAMESPACE_NODE *StartNode)
210 ACPI_INIT_WALK_INFO Info;
211 ACPI_TABLE_HEADER *Table;
212 ACPI_OWNER_ID OwnerId;
215 ACPI_FUNCTION_TRACE (DsInitializeObjects);
218 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
219 if (ACPI_FAILURE (Status))
221 return_ACPI_STATUS (Status);
224 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
225 "**** Starting initialization of namespace objects ****\n"));
227 /* Set all init info to zero */
229 ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
231 Info.OwnerId = OwnerId;
232 Info.TableIndex = TableIndex;
234 /* Walk entire namespace from the supplied root */
236 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
237 if (ACPI_FAILURE (Status))
239 return_ACPI_STATUS (Status);
243 * We don't use AcpiWalkNamespace since we do not want to acquire
244 * the namespace reader lock.
246 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
247 ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
248 if (ACPI_FAILURE (Status))
250 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
252 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
254 Status = AcpiGetTableByIndex (TableIndex, &Table);
255 if (ACPI_FAILURE (Status))
257 return_ACPI_STATUS (Status);
260 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
261 "Table [%4.4s] (id %4.4X) - %4u Objects with %3u Devices, "
262 "%3u Regions, %3u Methods (%u/%u/%u Serial/Non/Cvt)\n",
263 Table->Signature, OwnerId, Info.ObjectCount, Info.DeviceCount,
264 Info.OpRegionCount, Info.MethodCount, Info.SerialMethodCount,
265 Info.NonSerialMethodCount, Info.SerializedMethodCount));
267 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
268 Info.MethodCount, Info.OpRegionCount));
270 return_ACPI_STATUS (AE_OK);