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/*
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* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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/**
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@file
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@internalComponent
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@released
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*/
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#ifndef __CRYPTOH4RNG__
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#define __CRYPTOH4RNG__
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#include "cryptojobs.h"
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class DCryptoH4Chan;
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class DLddChanRandom;
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class CryptoH4JobRandom : public CryptoJobRandom
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{
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public:
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CryptoH4JobRandom(DLddChanRandom &aLddChanRandom);
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virtual ~CryptoH4JobRandom();
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virtual void SetDfcQ(TDfcQue *aDfcQue);
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virtual void SetDetails(DCryptoJobScheduler *aJobScheduler, MCryptoJobCallbacks *aCallbacks,
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TUint32 aNumOfBytes);
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virtual void GetToPddBuffer(TUint8 * &aBuf, TUint32 &aBufLen, TBool &aMore);
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virtual void BytesWrittenToPdd(TUint32 aBytes);
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virtual void GetFromPddBuffer(TUint8 * &aBuf, TUint32 &aBufLen, TBool &aMore);
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virtual void BytesReadFromPdd(TUint32 aBytes);
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private:
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// Implementations of virtual base class methods to support DCryptoJobScheduler
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virtual void DoSlice(TBool aFirstSlice);
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virtual TBool DoSaveState();
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virtual void DoRestoreState();
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virtual void DoReleaseHw();
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TInt BytesAvailable() const;
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void RegionsAvailable(TUint8 * &aPtr1, TInt &aLen1,
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TUint8 * &aPtr2, TInt &aLen2) const;
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DLddChanRandom &iLddChanRandom;
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// Details of job
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TUint32 iRandomBuffer[64]; // Temporary buffer for PDD to write into
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TInt iJobSizeInBytes;
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TInt iSwReadByteOffset;
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TInt iHw32Index;
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// Hook/enable unhook/disable ISR in top level OMAP h/w
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// Done at job scheduling level
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TBool iIsrHooked;
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void HookIsr();
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void UnHookIsr();
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// Enable/disable RNG ISR in Mask register
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// Done for each byte of data.
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inline void EnableIsr();
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inline void DisableIsr();
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static void Isr(TAny *aPtr);
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static void RandomDfc(TAny* aPtr);
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void DoRandomDfc();
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TDfc iRandomDfc;
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};
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#endif
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