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274 lines
8.4 KiB
C
274 lines
8.4 KiB
C
/******************************************************************************
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*
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* Module Name: dsinit - Object initialization namespace walk
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2022, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "acpi.h"
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#include "accommon.h"
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#include "acdispat.h"
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#include "acnamesp.h"
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#include "actables.h"
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#include "acinterp.h"
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME ("dsinit")
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/* Local prototypes */
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static ACPI_STATUS
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AcpiDsInitOneObject (
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ACPI_HANDLE ObjHandle,
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UINT32 Level,
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void *Context,
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void **ReturnValue);
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsInitOneObject
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*
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* PARAMETERS: ObjHandle - Node for the object
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* Level - Current nesting level
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* Context - Points to a init info struct
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* ReturnValue - Not used
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*
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* RETURN: Status
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*
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* DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
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* within the namespace.
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*
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* Currently, the only objects that require initialization are:
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* 1) Methods
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* 2) Operation Regions
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiDsInitOneObject (
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ACPI_HANDLE ObjHandle,
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UINT32 Level,
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void *Context,
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void **ReturnValue)
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{
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ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
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ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
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ACPI_STATUS Status;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_FUNCTION_ENTRY ();
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/*
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* We are only interested in NS nodes owned by the table that
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* was just loaded
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*/
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if (Node->OwnerId != Info->OwnerId)
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{
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return (AE_OK);
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}
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Info->ObjectCount++;
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/* And even then, we are only interested in a few object types */
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switch (AcpiNsGetType (ObjHandle))
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{
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case ACPI_TYPE_REGION:
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Status = AcpiDsInitializeRegion (ObjHandle);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"During Region initialization %p [%4.4s]",
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ObjHandle, AcpiUtGetNodeName (ObjHandle)));
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}
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Info->OpRegionCount++;
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break;
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case ACPI_TYPE_METHOD:
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/*
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* Auto-serialization support. We will examine each method that is
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* NotSerialized to determine if it creates any Named objects. If
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* it does, it will be marked serialized to prevent problems if
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* the method is entered by two or more threads and an attempt is
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* made to create the same named object twice -- which results in
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* an AE_ALREADY_EXISTS exception and method abort.
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*/
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Info->MethodCount++;
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ObjDesc = AcpiNsGetAttachedObject (Node);
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if (!ObjDesc)
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{
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break;
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}
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/* Ignore if already serialized */
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if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
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{
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Info->SerialMethodCount++;
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break;
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}
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if (AcpiGbl_AutoSerializeMethods)
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{
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/* Parse/scan method and serialize it if necessary */
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AcpiDsAutoSerializeMethod (Node, ObjDesc);
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if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
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{
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/* Method was just converted to Serialized */
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Info->SerialMethodCount++;
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Info->SerializedMethodCount++;
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break;
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}
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}
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Info->NonSerialMethodCount++;
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break;
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case ACPI_TYPE_DEVICE:
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Info->DeviceCount++;
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break;
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default:
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break;
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}
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/*
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* We ignore errors from above, and always return OK, since
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* we don't want to abort the walk on a single error.
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*/
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsInitializeObjects
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*
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* PARAMETERS: TableDesc - Descriptor for parent ACPI table
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* StartNode - Root of subtree to be initialized.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
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* necessary initialization on the objects found therein
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsInitializeObjects (
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UINT32 TableIndex,
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ACPI_NAMESPACE_NODE *StartNode)
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{
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ACPI_STATUS Status;
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ACPI_INIT_WALK_INFO Info;
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ACPI_TABLE_HEADER *Table;
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ACPI_OWNER_ID OwnerId;
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ACPI_FUNCTION_TRACE (DsInitializeObjects);
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Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"**** Starting initialization of namespace objects ****\n"));
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/* Set all init info to zero */
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memset (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
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Info.OwnerId = OwnerId;
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Info.TableIndex = TableIndex;
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/* Walk entire namespace from the supplied root */
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/*
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* We don't use AcpiWalkNamespace since we do not want to acquire
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* the namespace reader lock.
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*/
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Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
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ACPI_NS_WALK_NO_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
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}
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Status = AcpiGetTableByIndex (TableIndex, &Table);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* DSDT is always the first AML table */
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if (ACPI_COMPARE_NAMESEG (Table->Signature, ACPI_SIG_DSDT))
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{
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
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"\nACPI table initialization:\n"));
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}
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/* Summary of objects initialized */
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
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"Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
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"%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
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Table->Signature, Table->OemTableId, OwnerId, Info.ObjectCount,
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Info.DeviceCount,Info.OpRegionCount, Info.MethodCount,
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Info.SerialMethodCount, Info.NonSerialMethodCount,
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Info.SerializedMethodCount));
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
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Info.MethodCount, Info.OpRegionCount));
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return_ACPI_STATUS (AE_OK);
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}
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