--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/shostmassstorage/server/protocol/tsbcclientinterface.cpp Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,290 @@
+// 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:
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+
+#include <e32base.h>
+#include <e32base_private.h>
+#include "msdebug.h"
+#include "debug.h"
+#include "msctypes.h"
+
+#include "mtransport.h"
+#include "mprotocol.h"
+#include "tscsiclientreq.h"
+
+#include "tblocktransfer.h"
+#include "mscutils.h"
+#include "usbmshostpanic.h"
+#include "tscsiblockcmds.h"
+#include "tsbcclientinterface.h"
+
+/**
+Constructor.
+
+@param aTransport The Transport interface to be used
+*/
+TSbcClientInterface::TSbcClientInterface(MTransport& aTransport)
+: iTransport(aTransport)
+ {
+ __MSFNLOG
+ }
+
+
+TSbcClientInterface::~TSbcClientInterface()
+ {
+ __MSFNLOG
+ }
+
+
+/**
+Constructor to create and send SCSI MODE SENSE (6) request to obtain the
+medium's Write Protect status. The function leaves if the device response is not
+compliant with the protocol standard.
+
+@param aPageCode The SCSI PAGE CODE value
+@param aWriteProtected The SCSI WP value
+
+@return TInt KErrNone if successful, KErrCommandFailed to indicate a
+device status error, KErrCommandStalled to indicate device stall
+*/
+TInt TSbcClientInterface::ModeSense6L(TUint aPageCode, TBool& aWriteProtected)
+ {
+ __MSFNLOG
+ TScsiClientModeSense6Req modeSense6Req(TScsiClientModeSense6Req::ECurrentValues,
+ aPageCode);
+ TScsiClientModeSense6Resp modeSense6Resp;
+ TInt err = iTransport.SendControlCmdL(&modeSense6Req, &modeSense6Resp);
+ if (!err)
+ {
+ __SCSIPRINT1(_L("SCSI MODE SENSE (6) INFO WrProtect=%d"),
+ modeSense6Resp.iWriteProtected);
+ aWriteProtected = modeSense6Resp.iWriteProtected;
+ }
+ else
+ {
+ aWriteProtected = EFalse;
+ }
+ return err;
+ }
+
+
+/**
+Create and send SCSI MODE SENSE (10) request to obtain the mediums Write Protect
+status. The function leaves if the device response is not compliant with the
+protocol standard.
+
+@param aPageCode The SCSI PAGE CODE value
+@param aWriteProtected The SCSI WP value
+
+@return TInt KErrNone if successful, KErrCommandFailed to indicate a
+device status error, KErrCommandStalled to indicate a device stall
+*/
+TInt TSbcClientInterface::ModeSense10L(TUint aPageCode, TBool& aWriteProtected)
+ {
+ __MSFNLOG
+ TScsiClientModeSense10Req modeSense10Req(TScsiClientModeSense10Req::ECurrentValues,
+ aPageCode);
+ TScsiClientModeSense10Resp modeSense10Resp;
+ TInt err = iTransport.SendControlCmdL(&modeSense10Req, &modeSense10Resp);
+
+ if (!err)
+ {
+ __SCSIPRINT1(_L("SCSI MODE SENSE (10) INFO WrProtect=%d"),
+ modeSense10Resp.iWriteProtected);
+ aWriteProtected = modeSense10Resp.iWriteProtected;
+ }
+ else
+ {
+ aWriteProtected = EFalse;
+ }
+ return err;
+ }
+
+
+/**
+Constructor to create SCSI MODE SENSE (10) request.
+
+@param aPageControl The SCSI PAGE CODE value
+@param aPageCode The SCSI WP value
+@param aSubPageCode The SCSI SUB PAGE CODE value
+*/
+TScsiClientModeSense10Req::TScsiClientModeSense10Req(TPageControl aPageControl,
+ TUint aPageCode,
+ TUint aSubPageCode)
+ :
+ TScsiClientReq(EModeSense10),
+ iPageControl(aPageControl),
+ iPageCode(aPageCode),
+ iSubPageCode(aSubPageCode),
+ iAllocationLength(KResponseLength)
+ {
+ __MSFNLOG
+ }
+
+
+TInt TScsiClientModeSense10Req::EncodeRequestL(TDes8& aBuffer) const
+ {
+ __MSFNSLOG
+ __SCSIPRINT(_L("<-- SCSI MODE SENSE (10)"));
+ TInt length = TScsiClientReq::EncodeRequestL(aBuffer);
+
+ // PC
+ aBuffer[2] = iPageCode;
+ aBuffer[2] |= iPageControl << 6;
+ aBuffer[3] = iSubPageCode;
+
+ BigEndian::Put16(&aBuffer[7], iAllocationLength);
+ return length;
+ }
+
+/**
+Create READ (10) request and send to the transport layer. This performs a
+logical block read of the device server. The received data is appended into the
+copy buffer. The function leaves if the device response is not compliant with
+the protocol standard.
+Note that TBlockTransfer must be initialised beforehand.
+
+@param aLba The Logical Block address to read from
+@param aBuffer The buffer to copy data to
+@param aLen The number of bytes to be read (IN) and returns the number of bytes
+actually read (OUT)
+
+@return TInt KErrNone if successful otherwise KErrCommandFailed to indicate a
+device status error or KErrArgument to indicate that aLen is too large for the
+protocol.
+*/
+TInt TSbcClientInterface::Read10L(TLba aLba, TDes8& aBuffer, TInt& aLen)
+ {
+ __MSFNLOG
+ __ASSERT_DEBUG(iBlockTransfer.BlockLength(), User::Panic(KUsbMsHostPanicCat, EBlockLengthNotSet));
+ __ASSERT_DEBUG(aLen % iBlockTransfer.BlockLength() == 0, User::Panic(KUsbMsHostPanicCat, EBlockDevice));
+
+ TScsiClientRead10Req read10Req;
+
+ read10Req.iLogicalBlockAddress = aLba;
+
+ TInt blockTransferLength = aLen / iBlockTransfer.BlockLength();
+ if (blockTransferLength > static_cast<TInt>(KMaxTUint16))
+ {
+ User::Leave(KErrArgument);
+ }
+ read10Req.iBlockTransferLength = static_cast<TUint16>(blockTransferLength);
+ TInt err = iTransport.SendDataRxCmdL(&read10Req, aBuffer, aLen);
+ return err;
+ }
+
+/**
+Create READ CAPACITY (10) request and send to the transport layer. The request
+returns the device servers capacity information. The device server's response
+values are also used here to initialise the TBlockTransfer values. The function
+leaves if the device response is not compliant with the protocol standard.
+
+@param aLba The Logical Block Address returned by the LU
+@param aBlockSize The Block Size returned by the LU
+
+@return TInt KErrNone if successful, KErrCommandFailed to indicate a
+device status error, KErrCommandStalled to indicate a device stall
+*/
+TInt TSbcClientInterface::ReadCapacity10L(TLba& aLba, TUint32& aBlockSize)
+ {
+ __MSFNLOG
+ TScsiClientReadCapacity10Req capacity10Req;
+ TScsiClientReadCapacity10Resp capacity10Resp;
+
+ TInt err = iTransport.SendControlCmdL(&capacity10Req, &capacity10Resp);
+ if (!err)
+ {
+ aLba = capacity10Resp.iLba;
+ aBlockSize = capacity10Resp.iBlockSize;
+
+ __SCSIPRINT2(_L("Capacity LBA=0x%08x SIZE=0x%08x"),
+ aLba, aBlockSize);
+
+ iBlockTransfer.SetCapacity(aBlockSize, aLba);
+ }
+ return err;
+ }
+
+
+/**
+Create START STOP UNIT request. The function leaves if the device response is
+not compliant with the protocol standard.
+
+@param aStart SCSI START value
+
+@return TInt KErrNone if successful otherwise KErrCommandFailed to indicate a
+device status error
+*/
+TInt TSbcClientInterface::StartStopUnitL(TBool aStart)
+ {
+ __MSFNLOG
+ TScsiClientStartStopUnitReq startStopUnitReq;
+
+ startStopUnitReq.iImmed = ETrue;
+ startStopUnitReq.iLoej = EFalse;
+ startStopUnitReq.iStart = aStart;
+
+ TInt err = iTransport.SendControlCmdL(&startStopUnitReq);
+
+ return err;
+ }
+
+
+/**
+Create WRITE (10) request and send to the transport layer. This performs a
+logical block write of the device server. Note that TBlockTransfer must be
+initialised beforehand. The function leaves if the device response is not
+compliant with the protocol standard.
+
+@param aLba Logical Block Address to write the data to
+@param aBuffer Buffer containing the data
+@param aPos Offset into the buffer to the data
+@param aLen The number of bytes to be written (IN) and returns the bytes
+actually transferred (OUT)
+
+@return TInt KErrNone if successful otherwise KErrCommandFailed to indicate a
+device status error or KErrArgument to indicate that aLen is too large for the
+protocol.
+*/
+TInt TSbcClientInterface::Write10L(TLba aLba, TDesC8& aBuffer, TUint aPos, TInt& aLen)
+ {
+ __MSFNLOG
+ __ASSERT_DEBUG(iBlockTransfer.BlockLength(), User::Panic(KUsbMsHostPanicCat, EBlockLengthNotSet));
+ __ASSERT_DEBUG(aLen % iBlockTransfer.BlockLength() == 0, User::Panic(KUsbMsHostPanicCat, EBlockDevice));
+
+ // check that buffer size is large enough
+ if (aBuffer.Length() < (aPos + aLen))
+ {
+ User::Leave(KErrArgument);
+ }
+
+ TScsiClientWrite10Req write10Req;
+ write10Req.iLogicalBlockAddress = aLba;
+
+ TInt blockTransferLength = aLen / iBlockTransfer.BlockLength();
+ if (blockTransferLength > static_cast<TInt>(KMaxTUint16))
+ {
+ User::Leave(KErrArgument);
+ }
+ write10Req.iBlockTransferLength = static_cast<TUint16>(blockTransferLength);
+
+ TInt err = iTransport.SendDataTxCmdL(&write10Req, aBuffer, aPos, aLen);
+ return err;
+ }
+