author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:14:30 +0200 | |
changeset 0 | 1e05558e2206 |
child 2 | 468cfcb53fd1 |
permissions | -rw-r--r-- |
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// Copyright (c) 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 "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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@internalTechnology |
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Class declaration for CBulkOnlyTransport. |
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*/ |
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#ifndef BULKONLYTRANSPORT_H |
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#define BULKONLYTRANSPORT_H |
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#include <e32std.h> |
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#include <d32usbc.h> |
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#include "protocol.h" |
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#include "mscfilecontroller.h" |
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static const TInt KCbwLength = 31; |
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// for control endpoint |
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static const TUint KRequestHdrSize = 8; |
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/** size of buffer for command padding */ |
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static const TUint KBOTMaxBufSize = 1024; |
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/** |
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Represent Endpoint0 request |
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*/ |
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class TUsbRequestHdr |
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{ |
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public: |
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enum TEp0Request |
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{ |
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EReqGetMaxLun = 0xFE, |
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EReqReset = 0xFF |
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}; |
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public: |
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TInt Decode(const TDesC8& aBuffer); |
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TBool IsDataResponseRequired() const; |
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public: |
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TUint8 iRequestType; |
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TEp0Request iRequest; |
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TUint16 iValue; |
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TUint16 iIndex; |
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TUint16 iLength; |
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}; |
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//--------------------------------------- |
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class CBulkOnlyTransport; //forward declaration |
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// |
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// --- class CActiveDeviceStateNotifier ----------------------------- |
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// |
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class CActiveDeviceStateNotifier : public CActive |
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{ |
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public: |
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// Construction |
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static CActiveDeviceStateNotifier* NewL(CBulkOnlyTransport& aParent); |
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// Destruction |
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~CActiveDeviceStateNotifier(); |
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void Activate(); |
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private: |
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// Construction |
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CActiveDeviceStateNotifier(CBulkOnlyTransport& aParent); |
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void ConstructL(); |
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// Cancel request. |
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// Defined as pure virtual by CActive; |
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// implementation provided by this class. |
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virtual void DoCancel(); |
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// Service completed request. |
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// Defined as pure virtual by CActive; |
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// implementation provided by this class, |
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virtual void RunL(); |
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private: |
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CBulkOnlyTransport& iParent; |
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TUint iDeviceState; |
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TUint iOldDeviceState; |
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}; |
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//===================== |
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|
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/** |
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Represent session with control endpoint (Ep0). |
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handles the control interface, and responds to the class specific commands (RESET and GET_MAX_LUN). |
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*/ |
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class CControlInterface : public CActive |
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{ |
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|
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public: |
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enum TControlState |
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{ |
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ENone, |
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EReadEp0Data, |
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ESendMaxLun |
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|
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}; |
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public: |
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static CControlInterface* NewL(CBulkOnlyTransport& aParent); |
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|
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~CControlInterface(); |
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TInt Start(); |
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void Stop(); |
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virtual void RunL(); |
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virtual void DoCancel(); |
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private: |
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CControlInterface(CBulkOnlyTransport& aParent); |
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void ConstructL(); |
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TInt ReadEp0Data(); |
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void DecodeEp0Data(); |
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|
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private: |
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/** Buffer for request data*/ |
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TBuf8<KRequestHdrSize> iData; |
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TUsbRequestHdr iRequestHeader; |
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/** reference to the CBulkOnlyTransport*/ |
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CBulkOnlyTransport& iParent; |
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/** represent carrent state for state mashine */ |
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TControlState iCurrentState; |
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}; |
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|
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//---------------------- |
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/** handles the data transport and communications with the SCSI protocol */ |
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class CBulkOnlyTransport : public CActive, public MTransportBase |
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{ |
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public: |
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enum TCswStatus |
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{ |
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ECommandPassed = 0, |
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ECommandFailed = 1, |
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EPhaseError = 2 |
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}; |
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|
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enum TTransportState |
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{ |
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ENone, |
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EWaitForCBW, |
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ESendingCSW, |
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EWritingData, |
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EReadingData, |
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EPermErr |
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}; |
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public: |
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static CBulkOnlyTransport* NewL(TInt aNumDrives,CMscFileController& aController); |
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|
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~CBulkOnlyTransport(); |
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void SetupReadData(TPtr8& aData); |
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void SetupWriteData(TPtrC8& aData); |
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TInt Start(); |
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TInt Stop(); |
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void RegisterProtocol(MProtocolBase& aProtocol); |
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TInt BytesAvailable(); |
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|
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CMscFileController& Controller(); |
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TInt MaxLun(); |
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RDevUsbcClient& Ldd(); |
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TInt HwStart(TBool aDiscard = EFalse); |
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TInt HwStop(); |
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TInt HwSuspend(); |
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TInt HwResume(); |
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|
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virtual void RunL(); |
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virtual void DoCancel(); |
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|
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private: |
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CBulkOnlyTransport(TInt aNumDrives,CMscFileController& aController); |
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void ConstructL(); |
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TInt SetupConfigurationDescriptor(TBool aUnset = EFalse); |
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TInt SetupInterfaceDescriptors(); |
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void ReadCBW(); |
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void DecodeCBW(); |
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TBool CheckCBW(); |
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void SetPermError(); |
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void SendCSW(TUint aTag, TUint aDataResidue, TCswStatus aStatus); |
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void WriteData(TUint aLength, TBool aZlpRequired = EFalse); |
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void ReadData(TUint aLength); |
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void StallEndpointAndWaitForClear(TEndpointNumber aEndpoint); |
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void ReadAndDiscardData(TInt aBytes); |
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void Activate(TInt aReason); |
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void PrepareReadFromHost(TUint aHostDataLength); |
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void PrepareWriteToHost(TUint aHostDataLength); |
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private: |
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/** maximun logic unit number supported (started from 0) */ |
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TInt iMaxLun; |
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CMscFileController& iController; |
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CControlInterface* iControlInterface; |
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MProtocolBase* iProtocol; |
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RDevUsbcClient iLdd; |
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TTransportState iCurrentState; |
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/** buffer for Command Block Wrapper */ |
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TBuf8 <KCbwLength+1> iCbwBuf; |
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/** Pointer to read buffer (bufer itself provided by protocol) */ |
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TPtr8 iReadBuf; |
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/** Pointer to write buffer (bufer itself provided by protocol) */ |
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TPtrC8 iWriteBuf; |
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/** Shows how many data was not sent/reseived */ |
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TUint32 iDataResidue; |
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TUint32 iCbwTag; |
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TCswStatus iCmdStatus; |
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/** Indicate if SCSI protocol has data to sent */ |
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TBool iWriteSetUp; |
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/** Indicate if SCSI protocol expected additional data */ |
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TBool iReadSetUp; |
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/** Indicate whether SCSI protocol started or not */ |
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TBool iStarted; |
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/** internal buffer for padding */ |
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TBuf8<KBOTMaxBufSize> iBuf; |
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TBool iStallAllowed; |
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CActiveDeviceStateNotifier* iDeviceStateNotifier; |
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TBool iInterfaceConfigured; |
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}; |
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#endif // BULKONLYTRANSPORT_H |