excreate.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"

Include dependency graph for excreate.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_EXECUTER

Functions
ACPI_STATUS	AcpiExCreateAlias (ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExCreateEvent (ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExCreateMutex (ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExCreateRegion (UINT8 *AmlStart, UINT32 AmlLength, UINT8 SpaceId, ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExCreateProcessor (ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExCreatePowerResource (ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExCreateMethod (UINT8 *AmlStart, UINT32 AmlLength, ACPI_WALK_STATE *WalkState)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_EXECUTER

Definition at line 51 of file excreate.c.

Function Documentation

AcpiExCreateAlias()

ACPI_STATUS AcpiExCreateAlias

(

ACPI_WALK_STATE *

WalkState

)

Definition at line 68 of file excreate.c.

{
    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);
    }

    /* Ensure that the target node is valid */

    if (!TargetNode)
    {
        return_ACPI_STATUS (AE_NULL_OBJECT);
    }

    /* Construct the alias object (a namespace node) */

    switch (TargetNode->Type)
    {
    case ACPI_TYPE_METHOD:
        /*
         * Control method aliases need to be differentiated with
         * a special type
         */
        AliasNode->Type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
        break;

    default:
        /*
         * All other object types.
         *
         * 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;
    }

    /* Since both operands are Nodes, we don't need to delete them */

    AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
    return_ACPI_STATUS (Status);
}

Referenced by AcpiDsLoad2EndOp().

AcpiExCreateEvent()

ACPI_STATUS AcpiExCreateEvent

(

ACPI_WALK_STATE *

WalkState

)

Definition at line 147 of file excreate.c.

{
    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);
}

Referenced by AcpiDsLoad2EndOp().

AcpiExCreateMethod()

ACPI_STATUS AcpiExCreateMethod	(	UINT8 *	AmlStart,
		UINT32	AmlLength,
		ACPI_WALK_STATE *	WalkState
	)

Definition at line 483 of file excreate.c.

{
    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;
    ObjDesc->Method.Node = Operand[0];

    /*
     * 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);
}

Referenced by AcpiDsLoad1EndOp(), and AcpiDsLoad2EndOp().

AcpiExCreateMutex()

ACPI_STATUS AcpiExCreateMutex

(

ACPI_WALK_STATE *

WalkState

)

Definition at line 206 of file excreate.c.

{
    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);
}

Referenced by AcpiDsLoad2EndOp().

AcpiExCreatePowerResource()

ACPI_STATUS AcpiExCreatePowerResource

(

ACPI_WALK_STATE *

WalkState

)

Definition at line 432 of file excreate.c.

{
    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);
}

Referenced by AcpiDsLoad2EndOp().

AcpiExCreateProcessor()

ACPI_STATUS AcpiExCreateProcessor

(

ACPI_WALK_STATE *

WalkState

)

Definition at line 380 of file excreate.c.

{
    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);
}

Referenced by AcpiDsLoad2EndOp().

AcpiExCreateRegion()

ACPI_STATUS AcpiExCreateRegion	(	UINT8 *	AmlStart,
		UINT32	AmlLength,
		UINT8	SpaceId,
		ACPI_WALK_STATE *	WalkState
	)

Definition at line 268 of file excreate.c.

{
    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 (!AcpiIsValidSpaceId (SpaceId))
    {
        /*
         * Print an error message, but continue. We don't want to abort
         * a table load for this exception. Instead, if the region is
         * actually used at runtime, abort the executing method.
         */
        ACPI_ERROR ((AE_INFO,
            "Invalid/unknown Address Space ID: 0x%2.2X", SpaceId));
    }

    ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
        AcpiUtGetRegionName (SpaceId), SpaceId));

    /* 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 = AcpiNsGetSecondaryObject (ObjDesc);
    RegionObj2->Extra.AmlStart = AmlStart;
    RegionObj2->Extra.AmlLength = AmlLength;
    RegionObj2->Extra.Method_REG = NULL;
    if (WalkState->ScopeInfo)
    {
        RegionObj2->Extra.ScopeNode = WalkState->ScopeInfo->Scope.Node;
    }
    else
    {
        RegionObj2->Extra.ScopeNode = Node;
    }

    /* Init the region from the operands */

    ObjDesc->Region.SpaceId = SpaceId;
    ObjDesc->Region.Address = 0;
    ObjDesc->Region.Length = 0;
    ObjDesc->Region.Node = Node;
    ObjDesc->Region.Handler = NULL;
    ObjDesc->Common.Flags &=
        ~(AOPOBJ_SETUP_COMPLETE | AOPOBJ_REG_CONNECTED |
          AOPOBJ_OBJECT_INITIALIZED);

    /* 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);
}

Referenced by AcpiDsLoad1EndOp(), and AcpiDsLoad2EndOp().