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// Copyright (c) 2004-2010 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 the License "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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@file
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@internalTechnology
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*/
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#include "cbulkonlytransport.h"
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#include "cbulkonlytransportusbcldd.h"
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#if !defined(__WINS__) && !defined(__X86__)
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#include "cbulkonlytransportusbcscldd.h"
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#endif
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#include "usbmsshared.h"
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#include "massstoragedebug.h"
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#include "cusbmassstorageserver.h"
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//CBW offsets
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LOCAL_D const TInt KCbwSignatureOffset = 0;
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LOCAL_D const TInt KCbwTagOffset = 4;
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LOCAL_D const TInt KCbwDataTransferLengthOffset = 8;
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LOCAL_D const TInt KCbwFlagOffset = 12;
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LOCAL_D const TInt KCbwLunOffset = 13;
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LOCAL_D const TInt KCbwCbLengthOffset = 14;
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LOCAL_D const TInt KMaxCbwcbLength = 16;
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// CSW offsets
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LOCAL_D const TInt KCswSingnatureOffset = 0;
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LOCAL_D const TInt KCswTagOffset = 4;
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LOCAL_D const TInt KCswDataResidueOffset = 8;
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LOCAL_D const TInt KCswStatusOffset = 12;
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/**
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This function unpacks into the TUsbRequestHdr class from a descriptor with
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the alignment that would be introduced on the USB bus.
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@param aBuffer Input buffer
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@param aTarget Unpacked header.
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@return Error.
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*/
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TInt TUsbRequestHdr::Decode(const TDesC8& aBuffer)
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{
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if (aBuffer.Length() < static_cast<TInt>(KRequestHdrSize))
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{
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__PRINT1(_L("TUsbRequestHdr::Decode buffer invalid length %d"), aBuffer.Length());
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return KErrGeneral;
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}
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iRequestType = aBuffer[0];
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iRequest = static_cast<TEp0Request>(aBuffer[1]);
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iValue = static_cast<TUint16>(aBuffer[2] + (aBuffer[3] << 8));
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iIndex = static_cast<TUint16>(aBuffer[4] + (aBuffer[5] << 8));
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iLength = static_cast<TUint16>(aBuffer[6] + (aBuffer[7] << 8));
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__PRINT5(_L("type=%d request=%d value=%d index=%d length=%d"), iRequestType,iRequest,iValue,iIndex,iLength);
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return KErrNone;
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}
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/**
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This function determines whether data is required by the host in response
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to a message header.
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@return TBool Flag indicating whether a data response required.
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*/
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TBool TUsbRequestHdr::IsDataResponseRequired() const
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{
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return (iRequestType & 0x80) ? (TBool)ETrue : (TBool)EFalse;
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}
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//-------------------------------------
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/**
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Create an object of a class derived from CBulkOnlyTransport (default to CBulkOnlyTransportUsbcLdd object)
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@param aNumDrives - The number of drives available for MS
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@param aController - reference to the parent
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@return pointer to newly created derived class object
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*/
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CBulkOnlyTransport* CBulkOnlyTransport::NewL(TInt aNumDrives,CUsbMassStorageController& aController)
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{
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__FNLOG("CBulkOnlyTransport::NewL()");
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return NewL(aNumDrives,aController, (CUsbMassStorageController::TTransportldd) 1);
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}
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/**
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Create an object of a class derived from CBulkOnlyTransport
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@param aNumDrives - The number of drives available for MS
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@param aController - reference to the parent
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@param aTransportLddFlag - Type of usb client ldd
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@return pointer to newly created derived class object
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*/
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CBulkOnlyTransport* CBulkOnlyTransport::NewL(TInt aNumDrives,CUsbMassStorageController& aController, CUsbMassStorageController::TTransportldd aTransportLddFlag)
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{
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__FNLOG("CBulkOnlyTransport::NewL()");
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if (aNumDrives <=0 || static_cast<TUint>(aNumDrives) > KUsbMsMaxDrives)
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{
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User::Leave(KErrArgument);
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}
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#if !defined(__WINS__) && !defined(__X86__)
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CBulkOnlyTransportUsbcScLdd* scTransport;
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#endif
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CBulkOnlyTransportUsbcLdd* nonscTransport;
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switch (aTransportLddFlag)
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{
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case 1:
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nonscTransport = new(ELeave) CBulkOnlyTransportUsbcLdd(aNumDrives, aController);
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return nonscTransport;
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#if !defined(__WINS__) && !defined(__X86__)
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case 2:
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scTransport = new(ELeave) CBulkOnlyTransportUsbcScLdd(aNumDrives, aController);
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return scTransport;
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#endif
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default:
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__ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsCBulkOnlyTransportNull));
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return NULL;
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}
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}
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TInt CBulkOnlyTransport::InitialiseTransportL(TInt aTransportLddFlag)
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{
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__FNLOG("CBulkOnlyTransportUsbcScLdd::InitialiseTransportL()");
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TInt ret = KErrNone;
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MTransportBase* transport;
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iController.GetTransport(transport);
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switch (aTransportLddFlag)
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{
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#if !defined(__WINS__) && !defined(__X86__)
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case 2:
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ret = ((CBulkOnlyTransportUsbcScLdd*) transport)->Ldd().Open(0);
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if (ret != KErrNone)
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{
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return ret;
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}
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else
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{
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((CBulkOnlyTransportUsbcScLdd*) transport)->Ldd().Close();
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CleanupStack::PushL(transport);
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((CBulkOnlyTransportUsbcScLdd*) transport)->ConstructL();
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CleanupStack::Pop(transport);
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return ret;
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}
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#endif
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case 1:
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ret = ((CBulkOnlyTransportUsbcLdd*) transport)->Ldd().Open(0);
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if (ret != KErrNone)
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{
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return ret;
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}
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else
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{
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((CBulkOnlyTransportUsbcLdd*) transport)->Ldd().Close();
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CleanupStack::PushL(transport);
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((CBulkOnlyTransportUsbcLdd*) transport)->ConstructL();
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CleanupStack::Pop(transport);
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return ret;
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}
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default:
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return KErrNotFound;
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}
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}
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/**
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c'tor
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@param aNumDrives - The number of drives available for MS
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@param aController - reference to the parent
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*/
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CBulkOnlyTransport::CBulkOnlyTransport(TInt aNumDrives,CUsbMassStorageController& aController):
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CActive(EPriorityStandard),
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iMaxLun(aNumDrives-1),
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iController(aController),
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iStallAllowed(ETrue),
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iInterfaceConfigured(EFalse),
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iCommandBufPtr(NULL,0),
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iDataBufPtr(NULL,0),
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iCswBufPtr(NULL,0),
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iPaddingBufPtr(NULL,0),
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iWriteBufPtr(NULL,0),
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iReadBufPtr(NULL, 0),
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iCbwBufPtr(NULL,0)
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{
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__FNLOG("CBulkOnlyTransport::CBulkOnlyTransport");
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}
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/**
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Destructor
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*/
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CBulkOnlyTransport::~CBulkOnlyTransport()
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{
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}
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/**
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Called by the protocol after processing the packet to indicate that more data is required.
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@param aData reference to the data buffer.
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*/
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void CBulkOnlyTransport::SetupReadData(TUint aLength)
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{
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__FNLOG("CBulkOnlyTransport::SetupReadData");
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__PRINT1(_L("Length = %d (bytes)\n"), aLength);
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iBufSize = aLength;
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iReadSetUp = ETrue;
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}
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/**
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Called by the protocol after processing the packet to indicate that data should be written to the host.
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@param aData reference to the data buffer.
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*/
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void CBulkOnlyTransport::SetupWriteData(TPtrC8& aData)
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{
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__FNLOG("CBulkOnlyTransport::SetupWriteData");
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__PRINT1(_L("Length = %d (bytes)\n"), aData.Length());
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iWriteBufPtr.Set(aData);
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iWriteSetUp = ETrue;
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}
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TInt CBulkOnlyTransport::Start()
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{
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__FNLOG("CBulkOnlyTransport::Start");
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TInt err = KErrNone;
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if (!iProtocol)
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{
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return KErrBadHandle; //protocol should be set up before start
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}
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if (IsActive())
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{
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__PRINT(_L("CBulkOnlyTransport::Start - active before start!\n"));
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return KErrInUse;
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}
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if ((err = SetupConfigurationDescriptor()) != KErrNone ||
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(err = SetupInterfaceDescriptors()) != KErrNone )
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{
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__PRINT(_L("CBulkOnlyTransport::Start - Error during descriptors setup!\n"));
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return err;
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}
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AllocateEndpointResources();
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ActivateDeviceStateNotifier(); // activate notifier wich will wait until USB became configured
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TUsbcDeviceState deviceStatus = EUsbcDeviceStateDefault;
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err = GetDeviceStatus(deviceStatus);
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__PRINT1(_L("CBulkOnlyTransport::Start - Device status = %d\n"), deviceStatus);
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if (err == KErrNone && deviceStatus == EUsbcDeviceStateConfigured)
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{
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__PRINT(_L("CBulkOnlyTransport::Start - Starting bulk only transport\n"));
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err = HwStart();
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}
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#ifdef MSDC_MULTITHREADED
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TPtr8 aDes1(NULL,0);
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TPtr8 aDes2(NULL,0);
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GetBufferPointers(aDes1, aDes2);
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iProtocol->InitializeBufferPointers(aDes1, aDes2); // have to pass pointer to memory not offsets to initialise TPtr, and lengths
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#endif
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iInterfaceConfigured = ETrue;
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return err;
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}
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TInt CBulkOnlyTransport::HwStart(TBool aDiscard)
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{
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__FNLOG("CBulkOnlyTransport::HwStart");
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TInt lun = MaxLun();
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do
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{
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Controller().DriveManager().Connect(lun);
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}
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while(--lun >= 0);
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TInt res = StartControlInterface();
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iCurrentState = ENone;
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iWriteSetUp=EFalse;
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iReadSetUp=EFalse;
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iStarted = ETrue;
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if (aDiscard)
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{
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FlushData();
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}
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ReadCBW();
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return res;
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}
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TInt CBulkOnlyTransport::HwStop()
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{
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__FNLOG("CBulkOnlyTransport::HwStop");
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if (iStarted)
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{
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StopBulkOnlyEndpoint();
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CancelControlInterface();
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iStarted = EFalse;
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}
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return KErrNone;
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}
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void CBulkOnlyTransport::StopBulkOnlyEndpoint()
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{
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__FNLOG("CBulkOnlyTransport::StopBulkOnlyEndpoint");
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TInt lun = MaxLun();
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do
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{
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Controller().DriveManager().Disconnect(lun);
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}
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while(--lun >= 0);
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Cancel();
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iProtocol->Cancel();
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}
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TInt CBulkOnlyTransport::HwSuspend()
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{
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__FNLOG("CBulkOnlyTransport::HwSuspend");
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TInt lun = MaxLun();
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do
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{
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Controller().DriveManager().Disconnect(lun);
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}
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while(--lun >= 0);
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return KErrNone;
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}
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TInt CBulkOnlyTransport::HwResume()
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{
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__FNLOG("CBulkOnlyTransport::HwResume");
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TInt lun = MaxLun();
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do
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{
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Controller().DriveManager().Connect(lun);
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}
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while(--lun >= 0);
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return KErrNone;
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}
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/**
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Stops the Bulk Only Transport
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373 |
*/
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TInt CBulkOnlyTransport::Stop()
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{
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__FNLOG("CBulkOnlyTransport::Stop");
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377 |
CancelControlInterface();
|
|
|
378 |
CancelDeviceStateNotifier();
|
|
|
379 |
Cancel();
|
|
|
380 |
if (iInterfaceConfigured)
|
|
|
381 |
{
|
|
|
382 |
ReleaseInterface();
|
|
|
383 |
SetupConfigurationDescriptor(ETrue);
|
|
|
384 |
}
|
|
|
385 |
iCurrentState = ENone;
|
|
|
386 |
iInterfaceConfigured = EFalse;
|
|
|
387 |
|
|
|
388 |
return KErrNone;
|
|
|
389 |
}
|
|
|
390 |
|
|
|
391 |
|
|
|
392 |
|
|
|
393 |
void CBulkOnlyTransport::DoCancel()
|
|
|
394 |
{
|
|
|
395 |
__FNLOG("CBulkOnlyTransport::DoCancel");
|
|
|
396 |
CancelReadWriteRequests();
|
|
|
397 |
}
|
|
|
398 |
|
|
|
399 |
|
|
|
400 |
void CBulkOnlyTransport::Activate(TInt aReason)
|
|
|
401 |
{
|
|
|
402 |
SetActive();
|
|
|
403 |
TRequestStatus* r = &iStatus;
|
|
|
404 |
User::RequestComplete(r, aReason);
|
|
|
405 |
}
|
|
|
406 |
|
|
|
407 |
|
|
|
408 |
void CBulkOnlyTransport::RunL()
|
|
|
409 |
{
|
|
|
410 |
__FNLOG("CBulkOnlyTransport::RunL");
|
|
|
411 |
if (iStatus != KErrNone)
|
|
|
412 |
{
|
|
|
413 |
__PRINT1(_L("Error %d in RunL, halt endpoints \n"), iStatus.Int());
|
|
|
414 |
SetPermError(); //halt endpoints for reset recovery
|
|
|
415 |
return;
|
|
|
416 |
}
|
|
|
417 |
switch (iCurrentState)
|
|
|
418 |
{
|
|
|
419 |
case EWaitForCBW:
|
|
|
420 |
__PRINT(_L("EWaitForCBW"));
|
|
|
421 |
ProcessCbwEvent();
|
|
|
422 |
break;
|
|
|
423 |
|
|
|
424 |
case EWritingData:
|
|
|
425 |
__PRINT(_L("EWritingData"));
|
|
|
426 |
iWriteSetUp = EFalse; //the buffer was used
|
|
|
427 |
|
|
|
428 |
if (iDataResidue && iStallAllowed)
|
|
|
429 |
{
|
|
|
430 |
StallEndpointAndWaitForClear();
|
|
|
431 |
}
|
|
|
432 |
|
|
|
433 |
SendCSW(iCbwTag, iDataResidue, iCmdStatus);
|
|
|
434 |
break;
|
|
|
435 |
|
|
|
436 |
case EReadingData:
|
|
|
437 |
{
|
|
|
438 |
__PRINT(_L("EReadingData"));
|
|
|
439 |
|
|
|
440 |
ProcessReadingDataEvent();
|
|
|
441 |
}
|
|
|
442 |
break;
|
|
|
443 |
|
|
|
444 |
case ESendingCSW:
|
|
|
445 |
__PRINT(_L("ESendingCSW"));
|
|
|
446 |
ReadCBW();
|
|
|
447 |
break;
|
|
|
448 |
|
|
|
449 |
case EPermErr:
|
|
|
450 |
__PRINT(_L("EPermErr"));
|
|
|
451 |
StallEndpointAndWaitForClear();
|
|
|
452 |
break;
|
|
|
453 |
|
|
|
454 |
default:
|
|
|
455 |
SetPermError(); // unexpected state
|
|
|
456 |
}
|
|
|
457 |
}
|
|
|
458 |
|
|
|
459 |
|
|
|
460 |
/**
|
|
|
461 |
Decode the CBW received from the host via OutEndpoint
|
|
|
462 |
|
|
|
463 |
- If the header is valid, the data content is passed to the parser.
|
|
|
464 |
- Depending on the command, more data may be transmitted/received.
|
|
|
465 |
- ...or the CSW is sent (if not a data command).
|
|
|
466 |
|
|
|
467 |
*/
|
|
|
468 |
void CBulkOnlyTransport::DecodeCBW()
|
|
|
469 |
{
|
|
|
470 |
__FNLOG("CBulkOnlyTransport::DecodeCBW");
|
|
|
471 |
|
|
|
472 |
SetCbwPtr();
|
|
|
473 |
|
|
|
474 |
if (!CheckCBW()) //check if CBW valid and meaningful
|
|
|
475 |
{
|
|
|
476 |
// CBW not valid or meaningful
|
|
|
477 |
// Specification says: "If the CBW is not valid, the device shall STALL
|
|
|
478 |
// the Bulk-In pipe. Also, the device shall either STALL the Bulk-Out pipe,
|
|
|
479 |
// or the device shall accept and discard any Bulk-Out data. The device
|
|
|
480 |
// shall maintain this state until a Reset Recovery."
|
|
|
481 |
// Here we keep bulk-in ep stalled and ignore bulk-out ep.
|
|
|
482 |
SetPermError();
|
|
|
483 |
ExpireData((TAny*) (iCbwBufPtr.Ptr()));
|
|
|
484 |
return;
|
|
|
485 |
}
|
|
|
486 |
|
|
|
487 |
TPtrC8 aData;
|
|
|
488 |
aData.Set(&iCbwBufPtr[KCbwCbLengthOffset], KMaxCbwcbLength+1); //prepare data for protocol starting form Length
|
|
|
489 |
TUint8 lun = static_cast<TUint8>(iCbwBufPtr[13] & 0x0f);
|
|
|
490 |
|
|
|
491 |
iCbwTag = static_cast<TUint32>(iCbwBufPtr[KCbwTagOffset]) |
|
|
|
492 |
static_cast<TUint32>(iCbwBufPtr[KCbwTagOffset+1]) <<8 |
|
|
|
493 |
static_cast<TUint32>(iCbwBufPtr[KCbwTagOffset+2]) <<16|
|
|
|
494 |
static_cast<TUint32>(iCbwBufPtr[KCbwTagOffset+3]) <<24;
|
|
|
495 |
|
|
|
496 |
TInt i = KCbwDataTransferLengthOffset;
|
|
|
497 |
TUint hostDataLength = static_cast<TUint32>(iCbwBufPtr[i ]) |
|
|
|
498 |
static_cast<TUint32>(iCbwBufPtr[i+1]) <<8 |
|
|
|
499 |
static_cast<TUint32>(iCbwBufPtr[i+2]) <<16 |
|
|
|
500 |
static_cast<TUint32>(iCbwBufPtr[i+3]) <<24;
|
|
|
501 |
|
|
|
502 |
TBool dataToHost = iCbwBufPtr[KCbwFlagOffset] & 0x80;
|
|
|
503 |
|
|
|
504 |
__PRINT4(_L("lun =%d, hostDataLength=%d, CBWtag = 0x%x, dataToHost=%d\n"), lun, hostDataLength, iCbwTag, dataToHost);
|
|
|
505 |
//////////////////////////////////////////////
|
|
|
506 |
TBool ret = iProtocol->DecodePacket(aData, lun);
|
|
|
507 |
//////////////////////////////////////////////
|
|
|
508 |
ExpireData((TAny*) (iCbwBufPtr.Ptr()));
|
|
|
509 |
|
|
|
510 |
|
|
|
511 |
iStallAllowed = ETrue;
|
|
|
512 |
|
|
|
513 |
if (!ret)
|
|
|
514 |
{
|
|
|
515 |
__PRINT(_L("Command Failed\n"));
|
|
|
516 |
iCmdStatus = ECommandFailed;
|
|
|
517 |
}
|
|
|
518 |
else
|
|
|
519 |
{
|
|
|
520 |
__PRINT(_L("Command Passed\n"));
|
|
|
521 |
iCmdStatus = ECommandPassed;
|
|
|
522 |
}
|
|
|
523 |
|
|
|
524 |
if (hostDataLength) // Host expected data transfer
|
|
|
525 |
{
|
|
|
526 |
if (dataToHost) // send data to host
|
|
|
527 |
{
|
|
|
528 |
if (!iWriteSetUp) //write buffer was not set up
|
|
|
529 |
{
|
|
|
530 |
__PRINT(_L("Write buffer was not setup\n"));
|
|
|
531 |
iDataResidue =hostDataLength;
|
|
|
532 |
__PRINT1(_L("DataResidue (write to host)=%d\n"),iDataResidue);
|
|
|
533 |
|
|
|
534 |
//------------------------------------
|
|
|
535 |
if (hostDataLength <= KBOTMaxBufSize)
|
|
|
536 |
{
|
|
|
537 |
__PRINT(_L("Case 4 or 8\n"));
|
|
|
538 |
SetPaddingBufPtr(hostDataLength);
|
|
|
539 |
iPaddingBufPtr.FillZ(hostDataLength);
|
|
|
540 |
TPtrC8 ptr(NULL, 0);
|
|
|
541 |
ptr.Set((TUint8*)iPaddingBufPtr.Ptr(), hostDataLength);
|
|
|
542 |
WriteData(iStatus, ptr, hostDataLength, EFalse);
|
|
|
543 |
iStallAllowed = EFalse;
|
|
|
544 |
if (iReadSetUp) //read buffer WAS set up - case (8)
|
|
|
545 |
{
|
|
|
546 |
__PRINT(_L("It is Case 8\n"));
|
|
|
547 |
iCmdStatus = EPhaseError;
|
|
|
548 |
}
|
|
|
549 |
return;
|
|
|
550 |
}
|
|
|
551 |
else
|
|
|
552 |
//------------------------------------
|
|
|
553 |
// Use next block instead of StallEndpointAndWaitForClear(InEndpoint);
|
|
|
554 |
{
|
|
|
555 |
SetPaddingBufPtr(hostDataLength);
|
|
|
556 |
iPaddingBufPtr.FillZ(KBOTMaxBufSize);
|
|
|
557 |
TUint c =0;
|
|
|
558 |
TRequestStatus status;
|
|
|
559 |
while (c<hostDataLength)
|
|
|
560 |
{
|
|
|
561 |
TInt len;
|
|
|
562 |
if (hostDataLength - c > KBOTMaxBufSize)
|
|
|
563 |
{
|
|
|
564 |
len = KBOTMaxBufSize;
|
|
|
565 |
}
|
|
|
566 |
else
|
|
|
567 |
{
|
|
|
568 |
len = hostDataLength - c;
|
|
|
569 |
}
|
|
|
570 |
|
|
|
571 |
TPtrC8 ptr(NULL, 0);
|
|
|
572 |
ptr.Set((TUint8*)iPaddingBufPtr.Ptr(), len);
|
|
|
573 |
WriteUsb(status, ptr, len);
|
|
|
574 |
User::WaitForRequest(status);
|
|
|
575 |
c += KBOTMaxBufSize;
|
|
|
576 |
}
|
|
|
577 |
}
|
|
|
578 |
|
|
|
579 |
if (iReadSetUp) //read buffer WAS set up - case (8)
|
|
|
580 |
{
|
|
|
581 |
__PRINT(_L("Case 8\n"));
|
|
|
582 |
SendCSW(iCbwTag, hostDataLength, EPhaseError);
|
|
|
583 |
//don't care to reset any flag - should get reset recovery
|
|
|
584 |
}
|
|
|
585 |
else // case (4)
|
|
|
586 |
{
|
|
|
587 |
__PRINT(_L("Case 4\n"));
|
|
|
588 |
SendCSW(iCbwTag, hostDataLength, iCmdStatus);
|
|
|
589 |
}
|
|
|
590 |
return;
|
|
|
591 |
} // if (!iWriteSetUp)
|
|
|
592 |
|
|
|
593 |
//==================
|
|
|
594 |
TUint deviceDataLength = static_cast<TUint>(iWriteBufPtr.Length());
|
|
|
595 |
iDataResidue =hostDataLength - deviceDataLength ;
|
|
|
596 |
__PRINT2(_L("Device data length = %d, DataResidue (write to host)=%d\n"), deviceDataLength, iDataResidue);
|
|
|
597 |
|
|
|
598 |
if (deviceDataLength < hostDataLength &&
|
|
|
599 |
hostDataLength < KBOTMaxBufSize )
|
|
|
600 |
{
|
|
|
601 |
__PRINT(_L("Case 5 (padding)\n"));
|
|
|
602 |
SetPaddingBufPtr(hostDataLength);
|
|
|
603 |
iPaddingBufPtr.Zero();
|
|
|
604 |
iPaddingBufPtr.Append(iWriteBufPtr);
|
|
|
605 |
iStallAllowed = EFalse;
|
|
|
606 |
__PRINT1(_L("iPaddingBufPtr.Length = %d\n"),iPaddingBufPtr.Length());
|
|
|
607 |
TPtrC8 ptr(NULL, 0);
|
|
|
608 |
ptr.Set((TUint8*)iPaddingBufPtr.Ptr(), hostDataLength);
|
|
|
609 |
WriteData(iStatus, ptr, hostDataLength, EFalse);
|
|
|
610 |
return;
|
|
|
611 |
}
|
|
|
612 |
|
|
|
613 |
//===================
|
|
|
614 |
|
|
|
615 |
if (deviceDataLength == hostDataLength) //case (6)[==]
|
|
|
616 |
{
|
|
|
617 |
__PRINT(_L("Case 6\n"));
|
|
|
618 |
WriteData(iStatus, iWriteBufPtr, deviceDataLength);
|
|
|
619 |
return;
|
|
|
620 |
}
|
|
|
621 |
else if (deviceDataLength < hostDataLength) //case (5)[<]
|
|
|
622 |
{
|
|
|
623 |
__PRINT(_L("Case 5\n"));
|
|
|
624 |
WriteData(iStatus, iWriteBufPtr, deviceDataLength, ETrue); // Send ZLP
|
|
|
625 |
return;
|
|
|
626 |
}
|
|
|
627 |
else // deviceDataLength > hostDataLength - case (7)
|
|
|
628 |
{
|
|
|
629 |
__PRINT(_L("Case 7\n"));
|
|
|
630 |
iCmdStatus = EPhaseError;
|
|
|
631 |
iDataResidue = 0;
|
|
|
632 |
WriteData(iStatus, iWriteBufPtr, hostDataLength);
|
|
|
633 |
return;
|
|
|
634 |
}
|
|
|
635 |
}
|
|
|
636 |
else //read data from host
|
|
|
637 |
{
|
|
|
638 |
if (!iReadSetUp)
|
|
|
639 |
{
|
|
|
640 |
iDataResidue = hostDataLength;
|
|
|
641 |
__PRINT(_L("Read buffer was not setup\n"));
|
|
|
642 |
// Use next block instead of StallEndpointAndWaitForClear(OutEndpoint);
|
|
|
643 |
DiscardData(hostDataLength);
|
|
|
644 |
|
|
|
645 |
if (iWriteSetUp) //case (10)
|
|
|
646 |
{
|
|
|
647 |
__PRINT(_L("case 10\n"));
|
|
|
648 |
SendCSW(iCbwTag, hostDataLength, EPhaseError);
|
|
|
649 |
}
|
|
|
650 |
else // case (9)
|
|
|
651 |
{
|
|
|
652 |
__PRINT(_L("Case 9\n"));
|
|
|
653 |
SendCSW(iCbwTag, hostDataLength, iCmdStatus);
|
|
|
654 |
}
|
|
|
655 |
|
|
|
656 |
return;
|
|
|
657 |
}
|
|
|
658 |
|
|
|
659 |
TUint deviceDataLength = iBufSize;
|
|
|
660 |
iDataResidue = hostDataLength; // calculate residue later
|
|
|
661 |
|
|
|
662 |
__PRINT2(_L("deviceDataLength = iBufSize = %d, DataResidue = HDL for now (read from host) =%d\n"),deviceDataLength,iDataResidue);
|
|
|
663 |
|
|
|
664 |
if (deviceDataLength <= hostDataLength) // case (11) and (12)
|
|
|
665 |
{
|
|
|
666 |
__PRINT(_L("Case 11 or 12\n"));
|
|
|
667 |
ReadData(deviceDataLength);
|
|
|
668 |
return;
|
|
|
669 |
}
|
|
|
670 |
if (deviceDataLength > hostDataLength) // case (13)
|
|
|
671 |
{
|
|
|
672 |
__PRINT(_L("Case 13\n"));
|
|
|
673 |
/**
|
|
|
674 |
* Comment following line in order to pass compliant test.
|
|
|
675 |
* As spec said in case 13:"The device may receive data up to a
|
|
|
676 |
* total of dCBWDataTransferLength."
|
|
|
677 |
* Here we choose to ignore incoming data.
|
|
|
678 |
*/
|
|
|
679 |
//StallEndpointAndWaitForClear(OutEndpoint); //Stall Out endpoint
|
|
|
680 |
if (iReadSetUp)
|
|
|
681 |
{
|
|
|
682 |
WriteToClient(hostDataLength);
|
|
|
683 |
iReadSetUp = EFalse;
|
|
|
684 |
}
|
|
|
685 |
SendCSW(iCbwTag, hostDataLength, EPhaseError);
|
|
|
686 |
return;
|
|
|
687 |
}
|
|
|
688 |
}
|
|
|
689 |
}
|
|
|
690 |
else // Host expected no data transfer
|
|
|
691 |
{
|
|
|
692 |
__PRINT(_L("No data transfer expected\n"));
|
|
|
693 |
iDataResidue = 0;
|
|
|
694 |
if (iWriteSetUp || iReadSetUp) // case (2) and (3)
|
|
|
695 |
{
|
|
|
696 |
__PRINT(_L("Case 2 or 3\n"));
|
|
|
697 |
SendCSW(iCbwTag, 0, EPhaseError);
|
|
|
698 |
}
|
|
|
699 |
else
|
|
|
700 |
{
|
|
|
701 |
__PRINT(_L("Case 1\n"));
|
|
|
702 |
SendCSW(iCbwTag, 0, iCmdStatus); //case (1)
|
|
|
703 |
}
|
|
|
704 |
}
|
|
|
705 |
}
|
|
|
706 |
|
|
|
707 |
|
|
|
708 |
/**
|
|
|
709 |
Check if CBW Valid and Meaningful.
|
|
|
710 |
|
|
|
711 |
@return ETrue if CBW is Valid and Meaningful, EFalse otherwise
|
|
|
712 |
*/
|
|
|
713 |
TBool CBulkOnlyTransport::CheckCBW()
|
|
|
714 |
{
|
|
|
715 |
__FNLOG("CBulkOnlyTransport::CheckCBW");
|
|
|
716 |
|
|
|
717 |
//
|
|
|
718 |
// Check valid
|
|
|
719 |
//
|
|
|
720 |
|
|
|
721 |
// Check length
|
|
|
722 |
if ((TUint) (iCbwBufPtr.Length()) != KCbwLength)
|
|
|
723 |
{
|
|
|
724 |
__PRINT2(_L("Bad length: %d != KCbwLength"), iCbwBufPtr.Length(), KCbwLength);
|
|
|
725 |
return EFalse;
|
|
|
726 |
}
|
|
|
727 |
|
|
|
728 |
// Check signature
|
|
|
729 |
TInt i = KCbwSignatureOffset;
|
|
|
730 |
if (iCbwBufPtr[i ] != 0x55 || // CBW Singature from USB Bulk-Only Transport spec
|
|
|
731 |
iCbwBufPtr[i+1] != 0x53 ||
|
|
|
732 |
iCbwBufPtr[i+2] != 0x42 ||
|
|
|
733 |
iCbwBufPtr[i+3] != 0x43)
|
|
|
734 |
{
|
|
|
735 |
__PRINT(_L("Bad signature"));
|
|
|
736 |
__PRINT4(_L(" 0x%x, 0x%x, 0x%x, 0x%x \n"), iCbwBufPtr[i], iCbwBufPtr[i+1], iCbwBufPtr[i+2],iCbwBufPtr[i+3])
|
|
|
737 |
return EFalse;
|
|
|
738 |
}
|
|
|
739 |
|
|
|
740 |
//
|
|
|
741 |
// Check meaningful
|
|
|
742 |
//
|
|
|
743 |
|
|
|
744 |
// Check reserved bits ( must be zero )
|
|
|
745 |
if ((iCbwBufPtr[KCbwLunOffset] & 0xF0) || (iCbwBufPtr[KCbwCbLengthOffset] & 0xE0))
|
|
|
746 |
{
|
|
|
747 |
__PRINT(_L("Reserved bits not zero\n"));
|
|
|
748 |
return EFalse;
|
|
|
749 |
}
|
|
|
750 |
|
|
|
751 |
// check command block length
|
|
|
752 |
TInt cbwcbLength = iCbwBufPtr[KCbwCbLengthOffset] & 0x1F;
|
|
|
753 |
if (cbwcbLength >KMaxCbwcbLength)
|
|
|
754 |
{
|
|
|
755 |
__PRINT(_L("Incorrect block length\n"));
|
|
|
756 |
return EFalse;
|
|
|
757 |
}
|
|
|
758 |
|
|
|
759 |
//check LUN
|
|
|
760 |
TInt8 lun = static_cast<TUint8>(iCbwBufPtr[KCbwLunOffset] & 0x0f);
|
|
|
761 |
if (iMaxLun < lun)
|
|
|
762 |
{
|
|
271
|
763 |
RDebug::Print(_L("bad lun: %d"), lun);
|
|
0
|
764 |
return EFalse;
|
|
|
765 |
}
|
|
|
766 |
|
|
|
767 |
return ETrue;
|
|
|
768 |
}
|
|
|
769 |
|
|
|
770 |
|
|
|
771 |
/**
|
|
|
772 |
Initiate stalling of bulk IN endpoint.
|
|
|
773 |
Used when protocol wants to force host to initiate a reset recovery.
|
|
|
774 |
*/
|
|
|
775 |
void CBulkOnlyTransport::SetPermError()
|
|
|
776 |
{
|
|
|
777 |
__FNLOG("CBulkOnlyTransport::SetPermError");
|
|
|
778 |
iCurrentState = EPermErr;
|
|
|
779 |
Activate(KErrNone);
|
|
|
780 |
}
|
|
|
781 |
|
|
|
782 |
|
|
|
783 |
/**
|
|
|
784 |
Send data provided by protocol to the host
|
|
|
785 |
|
|
|
786 |
@param aLength amount of data (in bytes) to be send to host
|
|
|
787 |
*/
|
|
|
788 |
void CBulkOnlyTransport::WriteData(TRequestStatus& aStatus, TPtrC8& aDes, TUint aLength, TBool aZlpRequired)
|
|
|
789 |
{
|
|
|
790 |
__FNLOG("CBulkOnlyTransport::WriteData");
|
|
|
791 |
|
|
|
792 |
if (IsActive())
|
|
|
793 |
{
|
|
|
794 |
__PRINT(_L("Still active\n"));
|
|
|
795 |
__ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsBulkOnlyStillActive));
|
|
|
796 |
return;
|
|
|
797 |
}
|
|
|
798 |
WriteUsb(aStatus, aDes, aLength, aZlpRequired);
|
|
|
799 |
iCurrentState = EWritingData;
|
|
|
800 |
SetActive();
|
|
|
801 |
}
|
|
|
802 |
|
|
|
803 |
|
|
|
804 |
/**
|
|
|
805 |
Send Command Status Wrapper to the host
|
|
|
806 |
|
|
|
807 |
@param aTag Echo of Command Block Tag sent by the host.
|
|
|
808 |
@param aDataResidue the difference between the amount of data expected by the
|
|
|
809 |
host, and the actual amount of data processed by the device.
|
|
|
810 |
@param aStatus indicates the success or failure of the command.
|
|
|
811 |
*/
|
|
|
812 |
void CBulkOnlyTransport::SendCSW(TUint aTag, TUint aDataResidue, TCswStatus aStatus)
|
|
|
813 |
{
|
|
|
814 |
__FNLOG("CBulkOnlyTransport::SendCSW");
|
|
|
815 |
__PRINT2(_L("DataResidue = %d, Status = %d \n"), aDataResidue, aStatus);
|
|
|
816 |
|
|
|
817 |
if (IsActive())
|
|
|
818 |
{
|
|
|
819 |
__PRINT(_L("Still active\n"));
|
|
|
820 |
__ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsBulkOnlyStillActive));
|
|
|
821 |
return;
|
|
|
822 |
}
|
|
|
823 |
|
|
|
824 |
SetCswBufPtr(KCswLength);
|
|
|
825 |
TInt i = KCswSingnatureOffset;
|
|
|
826 |
iCswBufPtr[i ] = 0x55; // CSW Singature from USB Bulk-Only Transport spec
|
|
|
827 |
iCswBufPtr[i+1] = 0x53;
|
|
|
828 |
iCswBufPtr[i+2] = 0x42;
|
|
|
829 |
iCswBufPtr[i+3] = 0x53;
|
|
|
830 |
|
|
|
831 |
i = KCswTagOffset;
|
|
|
832 |
|
|
|
833 |
iCswBufPtr[i ] = static_cast<TUint8>((aTag & 0x000000FF));
|
|
|
834 |
iCswBufPtr[i+1] = static_cast<TUint8>((aTag & 0x0000FF00) >> 8);
|
|
|
835 |
iCswBufPtr[i+2] = static_cast<TUint8>((aTag & 0x00FF0000) >> 16);
|
|
|
836 |
iCswBufPtr[i+3] = static_cast<TUint8>((aTag & 0xFF000000) >> 24);
|
|
|
837 |
|
|
|
838 |
i = KCswDataResidueOffset;
|
|
|
839 |
iCswBufPtr[i ] = static_cast<TUint8>((aDataResidue & 0x000000FF));
|
|
|
840 |
iCswBufPtr[i+1] = static_cast<TUint8>((aDataResidue & 0x0000FF00) >> 8);
|
|
|
841 |
iCswBufPtr[i+2] = static_cast<TUint8>((aDataResidue & 0x00FF0000) >> 16);
|
|
|
842 |
iCswBufPtr[i+3] = static_cast<TUint8>((aDataResidue & 0xFF000000) >> 24);
|
|
|
843 |
|
|
|
844 |
iCswBufPtr[KCswStatusOffset] = static_cast<TUint8>(aStatus);
|
|
|
845 |
|
|
|
846 |
TPtrC8 ptr(NULL, 0);
|
|
|
847 |
ptr.Set((const TUint8*)iCswBufPtr.Ptr(), KCswLength);
|
|
|
848 |
|
|
|
849 |
WriteUsb(iStatus, ptr, KCswLength);
|
|
|
850 |
|
|
|
851 |
iCurrentState = ESendingCSW;
|
|
|
852 |
|
|
|
853 |
SetActive();
|
|
|
854 |
}
|
|
|
855 |
|
|
|
856 |
|
|
|
857 |
/**
|
|
|
858 |
Associates the transport with the protocol. Called during initialization of the controller.
|
|
|
859 |
|
|
|
860 |
@param aProtocol reference to the protocol
|
|
|
861 |
*/
|
|
|
862 |
void CBulkOnlyTransport::RegisterProtocol(MProtocolBase& aProtocol)
|
|
|
863 |
{
|
|
|
864 |
__FNLOG("CBulkOnlyTransport::RegisterProtocol");
|
|
|
865 |
iProtocol = &aProtocol;
|
|
|
866 |
}
|
|
|
867 |
|
|
|
868 |
|
|
|
869 |
/**
|
|
|
870 |
Used by CControlInterface
|
|
|
871 |
|
|
|
872 |
@return reference to the controller which instantiate the CBulkOnlyTransport
|
|
|
873 |
*/
|
|
|
874 |
CUsbMassStorageController& CBulkOnlyTransport::Controller()
|
|
|
875 |
{
|
|
|
876 |
return iController;
|
|
|
877 |
}
|
|
|
878 |
|
|
|
879 |
|
|
|
880 |
/**
|
|
|
881 |
@return the number of logical units supported by the device.
|
|
|
882 |
Logical Unit Numbers on the device shall be numbered contiguously starting from LUN
|
|
|
883 |
0 to a maximum LUN of 15 (Fh).
|
|
|
884 |
*/
|
|
|
885 |
TInt CBulkOnlyTransport::MaxLun()
|
|
|
886 |
{
|
|
|
887 |
return iMaxLun;
|
|
|
888 |
}
|
|
|
889 |
|
|
|
890 |
|
|
|
891 |
void CBulkOnlyTransport::GetCommandBufPtr(TPtr8& aDes, TUint aLength) // Set pointer to buffer of specified aLength for command
|
|
|
892 |
{
|
|
|
893 |
aDes.Set(SetCommandBufPtr(aLength));
|
|
|
894 |
}
|
|
|
895 |
|
|
|
896 |
void CBulkOnlyTransport::GetReadDataBufPtr(TPtr8& aDes) // Set pointer to buffer into which data is to be read from drive (Read10)
|
|
|
897 |
{
|
|
|
898 |
aDes.Set(SetDataBufPtr());
|
|
|
899 |
}
|
|
|
900 |
|
|
|
901 |
|
|
|
902 |
void CBulkOnlyTransport::GetWriteDataBufPtr(TPtrC8& aDes) // Set pointer to buffer from which data is to be written to drive (Write10)
|
|
|
903 |
{
|
|
|
904 |
aDes.Set(iReadBufPtr);
|
|
|
905 |
}
|
|
|
906 |
|
|
|
907 |
#ifdef MSDC_MULTITHREADED
|
|
|
908 |
void CBulkOnlyTransport::ProcessReadData(TAny* aAddress)
|
|
|
909 |
{
|
|
|
910 |
ExpireData(aAddress);
|
|
|
911 |
}
|
|
|
912 |
#endif
|
|
|
913 |
|
|
|
914 |
|
|
|
915 |
|
|
|
916 |
|
|
|
917 |
|
|
|
918 |
|
|
|
919 |
|
|
|
920 |
|