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/******************************************************************************
*
* Module Name: excreate - Named object creation
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, 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.
*/
#define __EXCREATE_C__
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acinterp.h>
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME ("excreate")
#ifndef ACPI_NO_METHOD_EXECUTION
/*******************************************************************************
*
* FUNCTION: AcpiExCreateAlias
*
* PARAMETERS: WalkState - Current state, contains operands
*
* RETURN: Status
*
* DESCRIPTION: Create a new named alias
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateAlias (
ACPI_WALK_STATE *WalkState)
{
ACPI_NAMESPACE_NODE *TargetNode;
ACPI_NAMESPACE_NODE *AliasNode;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE (ExCreateAlias);
/* Get the source/alias operands (both namespace nodes) */
AliasNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
TargetNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[1];
if ((TargetNode->Type == ACPI_TYPE_LOCAL_ALIAS) ||
(TargetNode->Type == ACPI_TYPE_LOCAL_METHOD_ALIAS))
{
/*
* Dereference an existing alias so that we don't create a chain
* of aliases. With this code, we guarantee that an alias is
* always exactly one level of indirection away from the
* actual aliased name.
*/
TargetNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, TargetNode->Object);
}
/*
* For objects that can never change (i.e., the NS node will
* permanently point to the same object), we can simply attach
* the object to the new NS node. For other objects (such as
* Integers, buffers, etc.), we have to point the Alias node
* to the original Node.
*/
switch (TargetNode->Type)
{
/* For these types, the sub-object can change dynamically via a Store */
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_BUFFER_FIELD:
/*
* These types open a new scope, so we need the NS node in order to access
* any children.
*/
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_LOCAL_SCOPE:
/*
* The new alias has the type ALIAS and points to the original
* NS node, not the object itself.
*/
AliasNode->Type = ACPI_TYPE_LOCAL_ALIAS;
AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
break;
case ACPI_TYPE_METHOD:
/*
* Control method aliases need to be differentiated
*/
AliasNode->Type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
break;
default:
/* Attach the original source object to the new Alias Node */
/*
* The new alias assumes the type of the target, and it points
* to the same object. The reference count of the object has an
* additional reference to prevent deletion out from under either the
* target node or the alias Node
*/
Status = AcpiNsAttachObject (AliasNode,
AcpiNsGetAttachedObject (TargetNode), TargetNode->Type);
break;
}
/* Since both operands are Nodes, we don't need to delete them */
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreateEvent
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new event object
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateEvent (
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_FUNCTION_TRACE (ExCreateEvent);
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_EVENT);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Create the actual OS semaphore, with zero initial units -- meaning
* that the event is created in an unsignalled state
*/
Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
&ObjDesc->Event.OsSemaphore);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Attach object to the Node */
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) WalkState->Operands[0],
ObjDesc, ACPI_TYPE_EVENT);
Cleanup:
/*
* Remove local reference to the object (on error, will cause deletion
* of both object and semaphore if present.)
*/
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreateMutex
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new mutex object
*
* Mutex (Name[0], SyncLevel[1])
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateMutex (
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_FUNCTION_TRACE_PTR (ExCreateMutex, ACPI_WALK_OPERANDS);
/* Create the new mutex object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Create the actual OS Mutex */
Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Init object and attach to NS node */
ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value;
ObjDesc->Mutex.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
Status = AcpiNsAttachObject (ObjDesc->Mutex.Node, ObjDesc, ACPI_TYPE_MUTEX);
Cleanup:
/*
* Remove local reference to the object (on error, will cause deletion
* of both object and semaphore if present.)
*/
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreateRegion
*
* PARAMETERS: AmlStart - Pointer to the region declaration AML
* AmlLength - Max length of the declaration AML
* RegionSpace - SpaceID for the region
* WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new operation region object
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateRegion (
UINT8 *AmlStart,
UINT32 AmlLength,
UINT8 RegionSpace,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_NAMESPACE_NODE *Node;
ACPI_OPERAND_OBJECT *RegionObj2;
ACPI_FUNCTION_TRACE (ExCreateRegion);
/* Get the Namespace Node */
Node = WalkState->Op->Common.Node;
/*
* If the region object is already attached to this node,
* just return
*/
if (AcpiNsGetAttachedObject (Node))
{
return_ACPI_STATUS (AE_OK);
}
/*
* Space ID must be one of the predefined IDs, or in the user-defined
* range
*/
if ((RegionSpace >= ACPI_NUM_PREDEFINED_REGIONS) &&
(RegionSpace < ACPI_USER_REGION_BEGIN) &&
(RegionSpace != ACPI_ADR_SPACE_DATA_TABLE))
{
ACPI_ERROR ((AE_INFO, "Invalid AddressSpace type 0x%X", RegionSpace));
return_ACPI_STATUS (AE_AML_INVALID_SPACE_ID);
}
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
AcpiUtGetRegionName (RegionSpace), RegionSpace));
/* Create the region descriptor */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Remember location in AML stream of address & length
* operands since they need to be evaluated at run time.
*/
RegionObj2 = ObjDesc->Common.NextObject;
RegionObj2->Extra.AmlStart = AmlStart;
RegionObj2->Extra.AmlLength = AmlLength;
/* Init the region from the operands */
ObjDesc->Region.SpaceId = RegionSpace;
ObjDesc->Region.Address = 0;
ObjDesc->Region.Length = 0;
ObjDesc->Region.Node = Node;
/* Install the new region object in the parent Node */
Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION);
Cleanup:
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreateProcessor
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new processor object and populate the fields
*
* Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3])
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateProcessor (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE_PTR (ExCreateProcessor, WalkState);
/* Create the processor object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Initialize the processor object from the operands */
ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value;
ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value;
ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value;
/* Install the processor object in the parent Node */
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
ObjDesc, ACPI_TYPE_PROCESSOR);
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreatePowerResource
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new PowerResource object and populate the fields
*
* PowerResource (Name[0], SystemLevel[1], ResourceOrder[2])
*
******************************************************************************/
ACPI_STATUS
AcpiExCreatePowerResource (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_FUNCTION_TRACE_PTR (ExCreatePowerResource, WalkState);
/* Create the power resource object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Initialize the power object from the operands */
ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value;
ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value;
/* Install the power resource object in the parent Node */
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
ObjDesc, ACPI_TYPE_POWER);
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
#endif
/*******************************************************************************
*
* FUNCTION: AcpiExCreateMethod
*
* PARAMETERS: AmlStart - First byte of the method's AML
* AmlLength - AML byte count for this method
* WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new method object
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateMethod (
UINT8 *AmlStart,
UINT32 AmlLength,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status;
UINT8 MethodFlags;
ACPI_FUNCTION_TRACE_PTR (ExCreateMethod, WalkState);
/* Create a new method object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto Exit;
}
/* Save the method's AML pointer and length */
ObjDesc->Method.AmlStart = AmlStart;
ObjDesc->Method.AmlLength = AmlLength;
/*
* Disassemble the method flags. Split off the ArgCount, Serialized
* flag, and SyncLevel for efficiency.
*/
MethodFlags = (UINT8) Operand[1]->Integer.Value;
ObjDesc->Method.ParamCount = (UINT8) (MethodFlags & AML_METHOD_ARG_COUNT);
/*
* Get the SyncLevel. If method is serialized, a mutex will be
* created for this method when it is parsed.
*/
if (MethodFlags & AML_METHOD_SERIALIZED)
{
ObjDesc->Method.InfoFlags = ACPI_METHOD_SERIALIZED;
/*
* ACPI 1.0: SyncLevel = 0
* ACPI 2.0: SyncLevel = SyncLevel in method declaration
*/
ObjDesc->Method.SyncLevel = (UINT8)
((MethodFlags & AML_METHOD_SYNC_LEVEL) >> 4);
}
/* Attach the new object to the method Node */
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
ObjDesc, ACPI_TYPE_METHOD);
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
Exit:
/* Remove a reference to the operand */
AcpiUtRemoveReference (Operand[1]);
return_ACPI_STATUS (Status);
}