/******************************************************************************
*
* Module Name: dsinit - Object initialization namespace walk
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2018, 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"
#include "acinterp.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 */
/*
* 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_NO_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
}
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);
}