diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/userlibandfileserver/fileserver/shostmassstorage/server/protocol/include/mprotocol.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/kernelhwsrv/userlibandfileserver/fileserver/shostmassstorage/server/protocol/include/mprotocol.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,147 @@
+// Copyright (c) 2008-2009 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:
+// protocol.h
+// 
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+
+#ifndef MPROTOCOL_H
+#define MPROTOCOL_H
+
+class MTransport;
+struct TCapsInfo;
+
+/**
+Interface class to control a Mass Storage device
+*/
+class MProtocol
+    {
+public:
+    /** Command to initialise LUN */
+    virtual void InitialiseUnitL() = 0;
+
+    /** Command to uninitialise the LUN */
+    virtual void UninitialiseUnitL() = 0;
+
+    /**
+    Command to read the media.
+
+    @param aPos
+    @param aLen
+    @param aCopybuf
+    */
+    virtual void ReadL(TUint64 aPos, TDes8& aCopybuf, TInt aLen) = 0;
+
+    /**
+    Command to write to the media.
+
+    @param aPos
+    @param aLen
+    @param aCopybuf
+    */
+    virtual void WriteL(TUint64 aPos, TDesC8& aCopybuf, TInt aLen) = 0;
+
+    /**
+    command to find the capacity of the media
+
+    @param aCopybuf
+    */
+    virtual void GetCapacityL(TCapsInfo& aCapsInfo) = 0;
+
+    /** unit testing */
+    virtual void CreateSbcInterfaceL(TUint32 aBlockLen, TUint32 aLastLba) = 0;
+
+	virtual void DoScsiReadyCheckEventL() = 0;
+
+    /**
+    Media change notification
+
+    @param aMessage
+    */
+	virtual	void NotifyChange(const RMessage2& aMessage) = 0;
+
+    /**
+    Force notification to be sent
+    */
+    virtual void ForceCompleteNotifyChangeL() = 0;
+    /**
+    Force notification to be sent
+    */
+    virtual void CancelChangeNotifierL() = 0;
+    /**
+    Suspends the logical unit
+    */
+	virtual void SuspendL() = 0;
+    /**
+    Resumes the logical unit
+    */
+	virtual void ResumeL() = 0;
+    /**
+    Resets the media change and finalisation request status check timer
+    */
+	virtual TBool IsConnected() = 0;
+
+    /** Destructor */
+    virtual ~MProtocol();
+    };
+
+inline MProtocol::~MProtocol()
+    {
+    }
+
+/**
+Interface class to encode SCSI request into a byte stream
+*/
+class MClientCommandServiceReq
+    {
+public:
+    /**
+    Encode the command data into a byte stream.
+
+    @param aBuffer Buffer to place the encoded data into
+    @return TInt Length of the encoded data
+    */
+    virtual TInt EncodeRequestL(TDes8& aBuffer) const = 0;
+    };
+
+
+/**
+Interface class to decode a SCSI response from byte stream into corresponding
+class
+*/
+class MClientCommandServiceResp
+    {
+public:
+    /**
+    Returns the length of the RESPONSE data stream.
+
+    @return TInt Length in bytes
+    */
+    virtual TInt DataLength() const = 0;
+
+    /**
+    Decode data into RESPONSE structure of implementation class.
+
+    @param aPtr Descriptor (byte stream) containing the data to be decoded
+    */
+    virtual void DecodeL(const TDesC8& aPtr) = 0;
+    };
+
+
+#endif // MPROTOCOL_H
+