We need a way to pass flags to rombuilds in Raptor via extension flm interfaces, so that the CPP pass
of the rom input files can be informed what toolchain we are building with and conditionally
include or exclude files depending on whether the toolchain could build them.
// Copyright (c) 2007-2009 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:
//
/**
@file
@internalComponent
*/
#ifndef ZEROCOPYTRANSFERSTRATEGY_H
#define ZEROCOPYTRANSFERSTRATEGY_H
#include "usbtransferstrategy.h"
NONSHARABLE_CLASS(RUsbZeroCopyTransferStrategy) : public RUsbTransferStrategy
{
public:
RUsbZeroCopyTransferStrategy();
virtual TInt RegisterTransferDescriptor(RUsbTransferDescriptor& aTransferDesc, TInt aRequiredSize, TUint aStartAlignment, TInt aRequiredMaxPackets);
virtual void ResetTransferDescriptors();
virtual TInt InitialiseTransferDescriptors(RUsbInterface& aInterface);
virtual void Close();
public: // Interrupt transfer descriptor methods
virtual TPtr8 IntrWritableBuffer(TInt aHandle);
virtual void IntrSaveData(TInt aHandle, TInt aLength);
virtual void IntrSetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus);
virtual TPtrC8 IntrBuffer(TInt aHandle) const;
public: // Bulk transfer descriptor methods
virtual TPtr8 BulkWritableBuffer(TInt aHandle);
virtual void BulkSaveData(TInt aHandle, TInt aLength);
virtual void BulkSetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus);
virtual TPtrC8 BulkBuffer(TInt aHandle) const;
public: // Isochronous transfer descriptor methods
virtual void IsocReset(TInt aHandle);
virtual TPacketLengths IsocLengths(TInt aHandle);
virtual TPacketResults IsocResults(TInt aHandle);
virtual TInt IsocMaxPacketSize(TInt aHandle);
virtual TPtr8 IsocWritablePackets(TInt aHandle, TInt aWriteHandle, TInt aNumPacketsRequested, TInt& aMaxNumPacketsAbleToWrite);
virtual TInt IsocSaveMultiple(TInt aHandle, TInt aWriteHandle, TInt aNumOfPackets);
virtual TPtrC8 IsocPackets(TInt aHandle, TInt aFirstPacketIndex, TInt aNumPacketsRequested, TInt& aNumPacketsReturned) const;
virtual void IsocReceivePackets(TInt aHandle, TInt aNumOfPackets);
private: // Standard (Bulk, Ctrl and Intr) Buffer methods
TPtr8 WritableBuffer(TInt aHandle);
void SaveData(TInt aHandle, TInt aLength);
void SetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus);
TPtrC8 Buffer(TInt aHandle) const;
private: // Isoc Buffer methods
void Reset(TInt aHandle);
TPacketLengths Lengths(TInt aHandle);
TPacketResults Results(TInt aHandle);
TInt MaxPacketSize(TInt aHandle);
TPtr8 WritablePackets(TInt aHandle, TInt aWriteHandle, TInt aNumPacketsRequested, TInt& aMaxNumPacketsAbleToWrite);
TInt SaveMultiple(TInt aHandle, TInt aWriteHandle, TInt aNumOfPackets);
TPtrC8 Packets(TInt aHandle, TInt aFirstPacketIndex, TInt aNumPacketsRequested, TInt& aNumPacketsReturned) const;
void ReceivePackets(TInt aHandle, TInt aNumOfPackets);
private:
NONSHARABLE_STRUCT(TUsbTransferDescriptorDetails)
{
TUsbTransferDescriptorDetails(RUsbTransferDescriptor&, TInt, TUint, TInt);
RUsbTransferDescriptor& iTransferDesc;
const TInt iRequiredSize;
TUint iRequiredAlignment;
const TInt iRequiredMaxPackets;
// Members to aid internal logic
TInt iAssignedOffset;
TInt iLengthsOffset; // Only applicable to isoc
TInt iReqLenOffset; // Only applicable to isoc
TInt iResultsOffset; // Only applicable to isoc
TInt iNumElements; // Only applicable to isoc
};
private:
TInt CalculateDataLayout(TInt& aCurrentOffset, TInt& aNumStandardTransfers, TInt& aNumIsocTransfers, TInt& aNumIsocElements);
void CalculateMetaDataLayout(TInt& aCurrentOffset, TInt& aMetaDataStart, TInt aNumStandardTransfers, TInt aNumIsocTransfers, TInt aNumIsocElements);
void InitialiseMetaData(TInt aMetaDataOffset, TInt aNumStandardTransfers, TInt aNumIsocTransfers, TInt aNumIsocElements);
TInt UsedPackets(TInt aHeaderOffset);
TBool IsPowerOfTwo(TUint aNumber);
TInt IncNeededToAlign(TInt aOffset, TUint aAlignment);
static TBool CompareTransferDescriptor(const RUsbTransferDescriptor* aTransferDesc, const TUsbTransferDescriptorDetails& aDetails);
private: //Calculate additional alignment related methods
TInt GetMaximumMaxPacketSize(TInt& aMaxMaxBulk, TInt& aMaxMaxInterrupt);
TInt CaculateAdditionalAlignment(TInt aCurrentOffset, TInt aMaxMaxBulk, TInt aMaxMaxInterrupt, TUsbTransferDescriptorDetails& aTransferDetails);
private:
RArray<TUsbTransferDescriptorDetails> iRegisteredTransfers;
private:
RUsbInterface* iInterfaceHandle;
RChunk iChunk;
TInt iBaseOffset;
TInt iPageSize;
};
#endif // ZEROCOPYTRANSFERSTRATEGY_H