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