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 __CRYPTOH4AES__
sl@0: #define __CRYPTOH4AES__
sl@0: #include "cryptojobs.h"
sl@0: #include <drivers/dma.h>
sl@0: 
sl@0: #define FAKE_DMA FakeDma
sl@0: 
sl@0: //#define TDFC_WRAPPER
sl@0: 
sl@0: #ifdef TDFC_WRAPPER
sl@0: class TDfcWrapper : public TDfc
sl@0: 	{
sl@0: public:
sl@0: 	TDfcWrapper(const TDfcWrapper &aOrig);
sl@0: 	TDfcWrapper(TDfcFn aFunction, TAny* aPtr, TInt aPriority);
sl@0: 	void Enque();
sl@0: private:
sl@0: 	TDfcWrapper &operator=(const TDfcWrapper &aRHS);
sl@0: 	void BaseEnque();
sl@0:     static void DfcWrapperFunc(TAny* aPtr);
sl@0: 	TDfcFn iRealFunction;
sl@0: 	TAny *iRealPtr;
sl@0: 	};
sl@0: #endif
sl@0: 
sl@0: class DCryptoH4Chan;
sl@0: class DLddChanAes;
sl@0: class CryptoH4JobAes : public CryptoJobAes
sl@0: 	{
sl@0: public:
sl@0: 	CryptoH4JobAes(DLddChanAes &aLddChanAes);
sl@0: 	~CryptoH4JobAes();
sl@0: 
sl@0: 	void SetDfcQ(TDfcQue *aDfcQue);
sl@0: 
sl@0: 	virtual TUint8 *GetKeyBuffer(); // Max 32 bytes long (256bits)
sl@0: 	virtual TUint8 *GetIVBuffer(); // 16 bytes long
sl@0: 	virtual TUint32 MaxBytes() const;
sl@0: 	virtual TUint8 *GetIOBuffer(); // MaxBytes() long
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: 	// Must be called after setting the IV (if used)
sl@0: 	virtual TInt SetDetails(DCryptoJobScheduler *aJobScheduler, 
sl@0: 							MCryptoJobCallbacks *aCallbacks,
sl@0: 							TBool aEncrypt, 
sl@0: 							TInt aKeyLength,
sl@0: 							RCryptoDriver::TChainingMode aMode);
sl@0: 	virtual void NotifyReadRequestLength(TUint32 aReadRequestLength);
sl@0: 	virtual void HwPerfCheck();
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: 	void MaybeSetupWriteDmaToHw();
sl@0: #ifdef FAKE_DMA
sl@0: 	void FakeDma();
sl@0: #endif
sl@0: 
sl@0: 	DLddChanAes &iLddChanAes;
sl@0: 	
sl@0: 	// Details of job
sl@0: 	TBool iEncrypt;
sl@0: 	RCryptoDriver::TChainingMode iMode;
sl@0: 
sl@0: 	TUint32 iKeyLengthBytes;
sl@0: 	TUint32 iKey[8]; // 128, 192 or 256 bits
sl@0: 	TUint32 iIV[4]; // 128 bits
sl@0: 	TUint32 iSavedState[4]; // Used for CBC chaining
sl@0: 
sl@0: 	TUint32 iReadRequestLength;
sl@0: 
sl@0: 	// The AES data buffer
sl@0: 	//	TUint32 iAesBuffer[2*4+4]; // Temporary buffer 8 = 2x16 bytes blocks, +4 space (which never gets used)
sl@0: 	TUint32 iAesBuffer[400*4+4]; // Temporary buffer 8 = 2x16 bytes blocks, +4 space (which never gets used)
sl@0: 	// There are 4 indexes into the above buffer, and after converting
sl@0: 	// all to bytes indexes, and allowing for wrapping the following
sl@0: 	// condition should always hold iSwReadIndex <= iHwWriteIndex <=
sl@0: 	// iHwReadIndex <= iSwWriteByteOffset
sl@0: 	TInt32 iSwWriteByteOffset;
sl@0: 	TInt32 iHwReadIndex;
sl@0: 	TInt32 iHwWriteIndex;
sl@0: 	TInt32 iSwReadByteOffset;
sl@0: 
sl@0: 	TBool iHwRunning;
sl@0: 	TInt iDmaToHwPending;
sl@0: 	TInt iDmaFromHwPending;
sl@0: 
sl@0: #ifdef FAKE_DMA
sl@0: 	TInt iFakeDmaToHwQueued;
sl@0: 	TInt iFakeDmaFromHwQueued;
sl@0: #endif
sl@0: 	
sl@0: 	void SetupHw(TBool aUseSavedState);
sl@0: 	void SetupDma(TUint32 aPtr, TBool aToHw);
sl@0: 	void StopHw();
sl@0: 	static void DmaComplete(DDmaRequest::TResult aResult, TAny *aPtr);
sl@0: 
sl@0:     static void DmaToHwCompleteDfc(TAny* aPtr);
sl@0: 	void DoDmaToHwCompleteDfc();
sl@0: #ifdef TDFC_WRAPPER
sl@0: 	TDfcWrapper iDmaToHwCompleteDfc;
sl@0: #else
sl@0:     TDfc iDmaToHwCompleteDfc;	
sl@0: #endif
sl@0: 
sl@0: 	void CheckIndexes() const;
sl@0: 	void CompareIndexes(const char *aName, TInt32 aP1, TInt32 aP2) const;
sl@0: 
sl@0:     static void DmaFromHwCompleteDfc(TAny* aPtr);
sl@0: 	void DoDmaFromHwCompleteDfc();
sl@0: #ifdef TDFC_WRAPPER
sl@0:     TDfcWrapper iDmaFromHwCompleteDfc;	
sl@0: #else
sl@0:     TDfc iDmaFromHwCompleteDfc;	
sl@0: #endif
sl@0: 	};
sl@0: #endif