userlibandfileserver/fileserver/shostmassstorage/server/protocol/tscsiblockcmds.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/shostmassstorage/server/protocol/tscsiblockcmds.cpp Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,249 @@
+// 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 "debug.h"
+#include "msdebug.h"
+#include "msctypes.h"
+#include "mscutils.h"
+
+#include "mtransport.h"
+#include "mprotocol.h"
+#include "tscsiclientreq.h"
+#include "tscsiblockcmds.h"
+
+
+// **** MODE SENSE (6) ****
+void TScsiClientModeSense6Resp::DecodeL(const TDesC8& aPtr)
+ {
+ __MSFNSLOG
+ __SCSIPRINT(_L("--> SCSI MODE SENSE (6)"));
+ __SCSIPRINT1(_L("len=%d"), aPtr.Length());
+ // Mode Parameter List
+ // SPC-3 7.4.2
+ // - Mode Parameter Header
+ // - Block Descriptor(s)
+ // - Mode Page(s)
+
+ // Mode Parameter Header
+ // SPC-3 7.4.3
+ // [0] Mode Data Length
+ // [1] Medium Type
+ // [2] Device-Specific Paramater
+ // [3] Block Descriptor Length
+
+
+ // validate length
+ if (aPtr.Length() < KResponseLength)
+ {
+ User::Leave(KErrGeneral);
+ }
+
+ TInt modeDataLength = aPtr[0];
+ if (aPtr.Length() - 1 < modeDataLength)
+ {
+ User::Leave(KErrGeneral);
+ }
+
+ TInt mediumType = aPtr[1];
+ TUint8 deviceSpecificParameter = aPtr[2];
+ // TInt blockDescriptorLength = aPtr[3];
+
+ __SCSIPRINT2(_L("Medium Type=%d DSP=0x%x"), mediumType, deviceSpecificParameter);
+ // [1] Medium Type
+ // 0x00 for SBC
+ if (mediumType == 0)
+ {
+ // [2] Device specific parameter
+ // SBC-3 6.3.1
+ // get the WP bit from the Device Specific parameters
+ iWriteProtected = (deviceSpecificParameter & 0x80) ? ETrue : EFalse;
+ }
+ else
+ {
+ // unsupported medium type
+ iWriteProtected = EFalse;
+ }
+
+ // [3] Block Descriptor Length
+ // 0x00 for no descriptors
+
+ // No Block Descriptors
+
+ // No Mode Pages
+
+ }
+
+
+// **** MODE SENSE (10) ****
+void TScsiClientModeSense10Resp::DecodeL(const TDesC8& aPtr)
+ {
+ __MSFNSLOG
+ __SCSIPRINT(_L("--> SCSI MODE SENSE (10)"));
+ __SCSIPRINT1(_L("len=%d"), aPtr.Length());
+ // Mode Parameter List
+ // SPC-3 7.4.2
+ // - Mode Parameter Header
+ // - Block Descriptor(s)
+ // - Mode Page(s)
+
+ // Mode Parameter Header
+ // SPC-3 7.4.3
+ // [0] Mode Data Length
+ // [1] Mode Data Length
+ // [2] Medium Type
+ // [3] Device-Specific Paramater
+ // [4] Reserved
+ // [5] Reserved
+ // [6] Block Descriptor Length
+ // [7] Block Descriptor Length
+
+ // validate length
+ if (aPtr.Length() < KResponseLength)
+ {
+ User::Leave(KErrGeneral);
+ }
+
+ TInt modeDataLength = BigEndian::Get32(&aPtr[0]);
+ if (aPtr.Length() - 2 < modeDataLength)
+ {
+ User::Leave(KErrGeneral);
+ }
+
+ TInt mediumType = aPtr[2];
+ TUint8 deviceSpecificParameter = aPtr[3];
+ // TInt blockDescriptorLength = BigEndian::Get32(&aPtr[6]);;
+
+ __SCSIPRINT2(_L("Medium Type=%d DSP=0x%x"), mediumType, deviceSpecificParameter);
+ // [1] Medium Type
+ // 0x00 for SBC
+ if (mediumType == 0)
+ {
+ // [2] Device specific parameter
+ // SBC-3 6.3.1
+ // get the WP bit from the Device Specific parameters
+ iWriteProtected = (deviceSpecificParameter & 0x80) ? ETrue : EFalse;
+ }
+ else
+ {
+ // unsupported medium type
+ iWriteProtected = EFalse;
+ }
+
+ // [3] Block Descriptor Length
+ // 0x00 for no descriptors
+
+ // No Block Descriptors
+
+ // No Mode Pages
+
+ }
+
+
+
+// **** READ CAPACITY (10) ***
+TInt TScsiClientReadCapacity10Req::EncodeRequestL(TDes8& aBuffer) const
+ {
+ __MSFNSLOG
+ __SCSIPRINT(_L("<-- READ CAPACITY 10"));
+ TInt length = TScsiClientReq::EncodeRequestL(aBuffer);
+
+ if (iLba)
+ {
+ // PMI bit
+ aBuffer[8] = 0x01;
+ // LBA
+ BigEndian::Put32(&aBuffer[2], iLba);
+ }
+ return length;
+ }
+
+
+void TScsiClientReadCapacity10Resp::DecodeL(const TDesC8& aPtr)
+ {
+ __MSFNSLOG
+ __SCSIPRINT(_L("--> SCSI READ CAPACITY (10)"));
+ iLba = BigEndian::Get32(&aPtr[0]);
+ iBlockSize = BigEndian::Get32(&aPtr[4]);
+ }
+
+
+// **** RdWr10 ****
+TInt TScsiClientRdWr10Req::EncodeRequestL(TDes8& aBuffer) const
+ {
+ __MSFNSLOG
+ TInt length = TScsiClientReq::EncodeRequestL(aBuffer);
+
+ // PROTECT
+ if (iProtect)
+ aBuffer[1] = iProtect << 5;
+
+ __SCSIPRINT2(_L("LBA=%08x LEN=%08x"), iLogicalBlockAddress, iBlockTransferLength);
+ // LOGICAL BLOCK ADDRESS
+ BigEndian::Put32(&aBuffer[2], iLogicalBlockAddress);
+ // TRANSFER LENGTH
+ BigEndian::Put16(&aBuffer[7], iBlockTransferLength);
+ return length;
+ }
+
+// **** READ (10) ****
+TInt TScsiClientRead10Req::EncodeRequestL(TDes8& aBuffer) const
+ {
+ __MSFNSLOG
+ __SCSIPRINT(_L("<-- SCSI READ (10)"));
+ TInt length = TScsiClientRdWr10Req::EncodeRequestL(aBuffer);
+ return length;
+ }
+
+
+// **** START STOP UNIT ****
+TInt TScsiClientStartStopUnitReq::EncodeRequestL(TDes8& aBuffer) const
+ {
+ __MSFNSLOG
+ __SCSIPRINT(_L("--> SCSI START STOP UNIT"));
+ TInt length = TScsiClientReq::EncodeRequestL(aBuffer);
+
+ // byte 1 mask
+ const TUint8 KImmedMask = 0x01;
+
+ // byte 4 mask
+ const TUint8 KStartMask = 0x01;
+ const TUint8 KLoejMask = 0x02;
+
+ if (iImmed)
+ aBuffer[1] |= KImmedMask;
+ if (iStart)
+ aBuffer[4] |= KStartMask;
+ if (iLoej)
+ aBuffer[4] |= KLoejMask;
+ return length;
+ }
+
+
+// **** WRITE (10) ****
+TInt TScsiClientWrite10Req::EncodeRequestL(TDes8& aBuffer) const
+ {
+ __MSFNSLOG
+ __SCSIPRINT(_L("<-- SCSI WRITE 10"));
+
+ TInt length = TScsiClientRdWr10Req::EncodeRequestL(aBuffer);
+ return length;
+ }
+