| /****************************************************************************** |
| * |
| * Module Name: dsinit - Object initialization namespace walk |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acdispat.h" |
| #include "acnamesp.h" |
| #include "actables.h" |
| |
| #define _COMPONENT ACPI_DISPATCHER |
| ACPI_MODULE_NAME ("dsinit") |
| |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiDsInitOneObject ( |
| ACPI_HANDLE ObjHandle, |
| UINT32 Level, |
| void *Context, |
| void **ReturnValue); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsInitOneObject |
| * |
| * PARAMETERS: ObjHandle - Node for the object |
| * Level - Current nesting level |
| * Context - Points to a init info struct |
| * ReturnValue - Not used |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object |
| * within the namespace. |
| * |
| * Currently, the only objects that require initialization are: |
| * 1) Methods |
| * 2) Operation Regions |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiDsInitOneObject ( |
| ACPI_HANDLE ObjHandle, |
| UINT32 Level, |
| void *Context, |
| void **ReturnValue) |
| { |
| ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; |
| ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; |
| ACPI_STATUS Status; |
| ACPI_OPERAND_OBJECT *ObjDesc; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* |
| * We are only interested in NS nodes owned by the table that |
| * was just loaded |
| */ |
| if (Node->OwnerId != Info->OwnerId) |
| { |
| return (AE_OK); |
| } |
| |
| Info->ObjectCount++; |
| |
| /* And even then, we are only interested in a few object types */ |
| |
| switch (AcpiNsGetType (ObjHandle)) |
| { |
| case ACPI_TYPE_REGION: |
| |
| Status = AcpiDsInitializeRegion (ObjHandle); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "During Region initialization %p [%4.4s]", |
| ObjHandle, AcpiUtGetNodeName (ObjHandle))); |
| } |
| |
| Info->OpRegionCount++; |
| break; |
| |
| case ACPI_TYPE_METHOD: |
| /* |
| * Auto-serialization support. We will examine each method that is |
| * NotSerialized to determine if it creates any Named objects. If |
| * it does, it will be marked serialized to prevent problems if |
| * the method is entered by two or more threads and an attempt is |
| * made to create the same named object twice -- which results in |
| * an AE_ALREADY_EXISTS exception and method abort. |
| */ |
| Info->MethodCount++; |
| ObjDesc = AcpiNsGetAttachedObject (Node); |
| if (!ObjDesc) |
| { |
| break; |
| } |
| |
| /* Ignore if already serialized */ |
| |
| if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED) |
| { |
| Info->SerialMethodCount++; |
| break; |
| } |
| |
| if (AcpiGbl_AutoSerializeMethods) |
| { |
| /* Parse/scan method and serialize it if necessary */ |
| |
| AcpiDsAutoSerializeMethod (Node, ObjDesc); |
| if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED) |
| { |
| /* Method was just converted to Serialized */ |
| |
| Info->SerialMethodCount++; |
| Info->SerializedMethodCount++; |
| break; |
| } |
| } |
| |
| Info->NonSerialMethodCount++; |
| break; |
| |
| case ACPI_TYPE_DEVICE: |
| |
| Info->DeviceCount++; |
| break; |
| |
| default: |
| |
| break; |
| } |
| |
| /* |
| * We ignore errors from above, and always return OK, since |
| * we don't want to abort the walk on a single error. |
| */ |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsInitializeObjects |
| * |
| * PARAMETERS: TableDesc - Descriptor for parent ACPI table |
| * StartNode - Root of subtree to be initialized. |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any |
| * necessary initialization on the objects found therein |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiDsInitializeObjects ( |
| UINT32 TableIndex, |
| ACPI_NAMESPACE_NODE *StartNode) |
| { |
| ACPI_STATUS Status; |
| ACPI_INIT_WALK_INFO Info; |
| ACPI_TABLE_HEADER *Table; |
| ACPI_OWNER_ID OwnerId; |
| |
| |
| ACPI_FUNCTION_TRACE (DsInitializeObjects); |
| |
| |
| Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| "**** Starting initialization of namespace objects ****\n")); |
| |
| /* Set all init info to zero */ |
| |
| memset (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); |
| |
| Info.OwnerId = OwnerId; |
| Info.TableIndex = TableIndex; |
| |
| /* Walk entire namespace from the supplied root */ |
| |
| Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* |
| * We don't use AcpiWalkNamespace since we do not want to acquire |
| * the namespace reader lock. |
| */ |
| Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX, |
| ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace")); |
| } |
| (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
| |
| Status = AcpiGetTableByIndex (TableIndex, &Table); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* DSDT is always the first AML table */ |
| |
| if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT)) |
| { |
| ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, |
| "\nInitializing Namespace objects:\n")); |
| } |
| |
| /* Summary of objects initialized */ |
| |
| ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, |
| "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, " |
| "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n", |
| Table->Signature, Table->OemTableId, OwnerId, Info.ObjectCount, |
| Info.DeviceCount,Info.OpRegionCount, Info.MethodCount, |
| Info.SerialMethodCount, Info.NonSerialMethodCount, |
| Info.SerializedMethodCount)); |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n", |
| Info.MethodCount, Info.OpRegionCount)); |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
