/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

* 

* Description: 

*

*/

#include <kernel.h>                 // For Kern

#include "isaaccessextension.h"

#include "iadtrace.h"               // For C_TRACE..

#include "router.h"                 // For DRouter

// CONSTS

// Priorities to DFC queues

const TInt KIADLddPrioriAdd( 0 );

const TInt KIADExtensionPrioriAdd( 0 );

DRouter* DIsaAccessExtension::iRouter = NULL;

TDfcQue* DIsaAccessExtension::iDfcQueueList[ EIADSizeOfDfcThreadList ] = { NULL, NULL };

// Internal fault codes.

enum TIADExtensionFaults

    {

    EIADDFCThreadCreationFailed = 1,

    EIADDFCThreadGetFailed = 2,

    };

DIsaAccessExtension::DIsaAccessExtension

        (

        // None

        )

    {

    C_TRACE( ( _T( "DIsaAccessExtension::DIsaAccessExtension ->" ) ) );

    // One above DFCQue0 (27)

    TInt defaultDfcPriority( 27 ); //TODO: NOTE!!! change to use DFCQue0 priority if possible //Kern::DfcQue0()->iThread->iPriority; NOTE!! IST prios

    // LDD DFC queue.

    TDfcQue* lddTDfcQueue = NULL;

    ASSERT_RESET_ALWAYS( KErrNone == Kern::DfcQCreate( lddTDfcQueue, defaultDfcPriority + KIADLddPrioriAdd, &KIADLddDfc ), EIADDFCThreadCreationFailed );

    iDfcQueueList[ EIADLddDfcQueue ] = lddTDfcQueue; 

    // Extension DFC queue.

    TDfcQue* extensionTDfcQueue = NULL;

    ASSERT_RESET_ALWAYS( KErrNone == Kern::DfcQCreate( extensionTDfcQueue, defaultDfcPriority + KIADExtensionPrioriAdd, &KIADExtensionDfc ), EIADDFCThreadCreationFailed );

    iDfcQueueList[ EIADExtensionDfcQueue ] = extensionTDfcQueue; 

    C_TRACE( ( _T( "DIsaAccessExtension::DIsaAccessExtension <-" ) ) );

    iRouter = new DRouter();

    ASSERT_RESET_ALWAYS( iRouter, EIADMemoryAllocationFailure | EIADFaultIdentifier4 << KFaultIdentifierShift );

//    _LIT8( KIADCOMPONAME, "ISA ACCESS DRIVER" );

    //BUILD_TRACE( KIADCOMPONAME() );

    }

DIsaAccessExtension::~DIsaAccessExtension

        (

        // None

        )

    {

    C_TRACE( ( _T( "DIsaAccessExtension::~DIsaAccessExtension ->" ) ) );

    // Never unloaded so no actual need for these, but we could test memory allocations

    // and deallocations if we destroy this extension in test code.

    delete iRouter;

    iRouter = NULL;

    for( TInt i( 0 ); i < EIADSizeOfDfcThreadList; ++i )

        {

        TDfcQue* dfcQueueToBeDeleted = GetDFCThread( static_cast< TIADDfcThread >( i ) );

        ASSERT_RESET_ALWAYS( dfcQueueToBeDeleted, EIADDFCThreadGetFailed | EIADFaultIdentifier1 << KFaultIdentifierShift );

        delete dfcQueueToBeDeleted;

        dfcQueueToBeDeleted = NULL;

        }

    iDfcQueueList[ EIADLddDfcQueue ] = NULL;

    iDfcQueueList[ EIADExtensionDfcQueue ] = NULL;

    C_TRACE( ( _T( "DIsaAccessExtension::~DIsaAccessExtension <-" ) ) );

    }

EXPORT_C MChannel2IADApi* DIsaAccessExtension::GetChannel2IADApi

        (

        // None

        )

    {

    C_TRACE( ( _T( "DIsaAccessExtension::::GetChannel2IADApi 0x%x <->" ), iRouter ) );

    return iRouter;

    }

EXPORT_C TDfcQue* DIsaAccessExtension::GetDFCThread

        (

        TIADDfcThread aDfcThread

        )

    {

    C_TRACE( ( _T( "DIsaAccessExtension::GetDFCThread <->" ) ) );

    ASSERT_RESET_ALWAYS( ( EIADLddDfcQueue == aDfcThread || EIADExtensionDfcQueue == aDfcThread ), EIADDFCThreadGetFailed | EIADFaultIdentifier2 << KFaultIdentifierShift );

    // Ownership not given to caller.

    return iDfcQueueList[ aDfcThread ];

    }

DECLARE_STANDARD_EXTENSION()

    {

    Kern::Printf( "ISA Access Extension" );

    C_TRACE( ( _T( "DIsaAccessExtension EntryPoint ->" ) ) );

    // Create a container extension

    DIsaAccessExtension* extension = new DIsaAccessExtension();

    TRACE_ASSERT( extension );

    C_TRACE( ( _T( "DIsaAccessExtension EntryPoint <-" ) ) );

    return extension ? KErrNone : KErrNoMemory;

    }