1 /******************************************************************************
3 * Module Name: dsinit - Object initialization namespace walk
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2016, Intel Corp.
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23 * of any contributors may be used to endorse or promote products derived
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51 #define _COMPONENT ACPI_DISPATCHER
52 ACPI_MODULE_NAME ("dsinit")
55 /* Local prototypes */
59 ACPI_HANDLE ObjHandle,
65 /*******************************************************************************
67 * FUNCTION: AcpiDsInitOneObject
69 * PARAMETERS: ObjHandle - Node for the object
70 * Level - Current nesting level
71 * Context - Points to a init info struct
72 * ReturnValue - Not used
76 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
77 * within the namespace.
79 * Currently, the only objects that require initialization are:
81 * 2) Operation Regions
83 ******************************************************************************/
87 ACPI_HANDLE ObjHandle,
92 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
93 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
95 ACPI_OPERAND_OBJECT *ObjDesc;
98 ACPI_FUNCTION_ENTRY ();
102 * We are only interested in NS nodes owned by the table that
105 if (Node->OwnerId != Info->OwnerId)
112 /* And even then, we are only interested in a few object types */
114 switch (AcpiNsGetType (ObjHandle))
116 case ACPI_TYPE_REGION:
118 Status = AcpiDsInitializeRegion (ObjHandle);
119 if (ACPI_FAILURE (Status))
121 ACPI_EXCEPTION ((AE_INFO, Status,
122 "During Region initialization %p [%4.4s]",
123 ObjHandle, AcpiUtGetNodeName (ObjHandle)));
126 Info->OpRegionCount++;
129 case ACPI_TYPE_METHOD:
131 * Auto-serialization support. We will examine each method that is
132 * NotSerialized to determine if it creates any Named objects. If
133 * it does, it will be marked serialized to prevent problems if
134 * the method is entered by two or more threads and an attempt is
135 * made to create the same named object twice -- which results in
136 * an AE_ALREADY_EXISTS exception and method abort.
139 ObjDesc = AcpiNsGetAttachedObject (Node);
145 /* Ignore if already serialized */
147 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
149 Info->SerialMethodCount++;
153 if (AcpiGbl_AutoSerializeMethods)
155 /* Parse/scan method and serialize it if necessary */
157 AcpiDsAutoSerializeMethod (Node, ObjDesc);
158 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
160 /* Method was just converted to Serialized */
162 Info->SerialMethodCount++;
163 Info->SerializedMethodCount++;
168 Info->NonSerialMethodCount++;
171 case ACPI_TYPE_DEVICE:
182 * We ignore errors from above, and always return OK, since
183 * we don't want to abort the walk on a single error.
189 /*******************************************************************************
191 * FUNCTION: AcpiDsInitializeObjects
193 * PARAMETERS: TableDesc - Descriptor for parent ACPI table
194 * StartNode - Root of subtree to be initialized.
198 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
199 * necessary initialization on the objects found therein
201 ******************************************************************************/
204 AcpiDsInitializeObjects (
206 ACPI_NAMESPACE_NODE *StartNode)
209 ACPI_INIT_WALK_INFO Info;
210 ACPI_TABLE_HEADER *Table;
211 ACPI_OWNER_ID OwnerId;
214 ACPI_FUNCTION_TRACE (DsInitializeObjects);
217 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
218 if (ACPI_FAILURE (Status))
220 return_ACPI_STATUS (Status);
223 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
224 "**** Starting initialization of namespace objects ****\n"));
226 /* Set all init info to zero */
228 memset (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
230 Info.OwnerId = OwnerId;
231 Info.TableIndex = TableIndex;
233 /* Walk entire namespace from the supplied root */
236 * We don't use AcpiWalkNamespace since we do not want to acquire
237 * the namespace reader lock.
239 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
240 ACPI_NS_WALK_NO_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
241 if (ACPI_FAILURE (Status))
243 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
246 Status = AcpiGetTableByIndex (TableIndex, &Table);
247 if (ACPI_FAILURE (Status))
249 return_ACPI_STATUS (Status);
252 /* DSDT is always the first AML table */
254 if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT))
256 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
257 "\nInitializing Namespace objects:\n"));
260 /* Summary of objects initialized */
262 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
263 "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
264 "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
265 Table->Signature, Table->OemTableId, OwnerId, Info.ObjectCount,
266 Info.DeviceCount,Info.OpRegionCount, Info.MethodCount,
267 Info.SerialMethodCount, Info.NonSerialMethodCount,
268 Info.SerializedMethodCount));
270 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
271 Info.MethodCount, Info.OpRegionCount));
273 return_ACPI_STATUS (AE_OK);