1 /******************************************************************************
3 * Module Name: dsinit - Object initialization namespace walk
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2014, Intel Corp.
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20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
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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.
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
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50 #define _COMPONENT ACPI_DISPATCHER
51 ACPI_MODULE_NAME ("dsinit")
54 /* Local prototypes */
58 ACPI_HANDLE ObjHandle,
64 /*******************************************************************************
66 * FUNCTION: AcpiDsInitOneObject
68 * PARAMETERS: ObjHandle - Node for the object
69 * Level - Current nesting level
70 * Context - Points to a init info struct
71 * ReturnValue - Not used
75 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
76 * within the namespace.
78 * Currently, the only objects that require initialization are:
80 * 2) Operation Regions
82 ******************************************************************************/
86 ACPI_HANDLE ObjHandle,
91 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
92 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
94 ACPI_OPERAND_OBJECT *ObjDesc;
97 ACPI_FUNCTION_ENTRY ();
101 * We are only interested in NS nodes owned by the table that
104 if (Node->OwnerId != Info->OwnerId)
111 /* And even then, we are only interested in a few object types */
113 switch (AcpiNsGetType (ObjHandle))
115 case ACPI_TYPE_REGION:
117 Status = AcpiDsInitializeRegion (ObjHandle);
118 if (ACPI_FAILURE (Status))
120 ACPI_EXCEPTION ((AE_INFO, Status,
121 "During Region initialization %p [%4.4s]",
122 ObjHandle, AcpiUtGetNodeName (ObjHandle)));
125 Info->OpRegionCount++;
128 case ACPI_TYPE_METHOD:
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.
138 ObjDesc = AcpiNsGetAttachedObject (Node);
144 /* Ignore if already serialized */
146 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
148 Info->SerialMethodCount++;
152 if (AcpiGbl_AutoSerializeMethods)
154 /* Parse/scan method and serialize it if necessary */
156 AcpiDsAutoSerializeMethod (Node, ObjDesc);
157 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
159 /* Method was just converted to Serialized */
161 Info->SerialMethodCount++;
162 Info->SerializedMethodCount++;
167 Info->NonSerialMethodCount++;
170 case ACPI_TYPE_DEVICE:
181 * We ignore errors from above, and always return OK, since
182 * we don't want to abort the walk on a single error.
188 /*******************************************************************************
190 * FUNCTION: AcpiDsInitializeObjects
192 * PARAMETERS: TableDesc - Descriptor for parent ACPI table
193 * StartNode - Root of subtree to be initialized.
197 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
198 * necessary initialization on the objects found therein
200 ******************************************************************************/
203 AcpiDsInitializeObjects (
205 ACPI_NAMESPACE_NODE *StartNode)
208 ACPI_INIT_WALK_INFO Info;
209 ACPI_TABLE_HEADER *Table;
210 ACPI_OWNER_ID OwnerId;
213 ACPI_FUNCTION_TRACE (DsInitializeObjects);
216 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
217 if (ACPI_FAILURE (Status))
219 return_ACPI_STATUS (Status);
222 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
223 "**** Starting initialization of namespace objects ****\n"));
225 /* Set all init info to zero */
227 ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
229 Info.OwnerId = OwnerId;
230 Info.TableIndex = TableIndex;
232 /* Walk entire namespace from the supplied root */
234 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
235 if (ACPI_FAILURE (Status))
237 return_ACPI_STATUS (Status);
241 * We don't use AcpiWalkNamespace since we do not want to acquire
242 * the namespace reader lock.
244 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
245 ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
246 if (ACPI_FAILURE (Status))
248 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
250 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
252 Status = AcpiGetTableByIndex (TableIndex, &Table);
253 if (ACPI_FAILURE (Status))
255 return_ACPI_STATUS (Status);
258 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
259 "Table [%4.4s] (id %4.4X) - %4u Objects with %3u Devices, "
260 "%3u Regions, %3u Methods (%u/%u/%u Serial/Non/Cvt)\n",
261 Table->Signature, OwnerId, Info.ObjectCount, Info.DeviceCount,
262 Info.OpRegionCount, Info.MethodCount, Info.SerialMethodCount,
263 Info.NonSerialMethodCount, Info.SerializedMethodCount));
265 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
266 Info.MethodCount, Info.OpRegionCount));
268 return_ACPI_STATUS (AE_OK);