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// Copyright (c) 2008-2009 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 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 <e32base.h>
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#include <e32base_private.h>
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#include <d32usbdi.h>
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#include <d32usbtransfers.h>
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#include "msctypes.h"
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#include "mscutils.h"
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#include "shared.h"
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#include "msgservice.h"
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#include "botmsctypes.h"
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#include "mprotocol.h"
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#include "mtransport.h"
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#include "cbulkonlytransport.h"
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#include "cusbhostmslogicalunit.h"
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#include "cusbhostmsdevice.h"
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#include "cusbmssuspendresume.h"
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#include "msdebug.h"
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#include "debug.h"
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CUsbHostMsDevice* CUsbHostMsDevice::NewL(THostMassStorageConfig& aConfig)
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{
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__MSFNSLOG
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CUsbHostMsDevice* r = new (ELeave) CUsbHostMsDevice(aConfig);
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CleanupStack::PushL(r);
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r->ConstructL();
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CleanupStack::Pop();
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return r;
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}
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void CUsbHostMsDevice::ConstructL()
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{
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__MSFNLOG
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iTimer = CPeriodic::NewL(CActive::EPriorityStandard);
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iTimerRunning = EFalse;
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}
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CUsbHostMsDevice::CUsbHostMsDevice(THostMassStorageConfig& aConfig)
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: iConfig(aConfig),
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iState(EActive)
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{
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__MSFNLOG
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}
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CUsbHostMsDevice::~CUsbHostMsDevice()
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{
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__MSFNLOG
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delete iTransport;
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delete iDeviceSuspendResume;
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if (iTimer && iTimerRunning)
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{
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iTimer->Cancel();
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}
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delete iTimer;
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}
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MTransport* CUsbHostMsDevice::InitialiseTransportL(TTransportType aTransportId)
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{
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__MSFNLOG
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switch(aTransportId)
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{
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case BulkOnlyTransport:
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return CBulkOnlyTransport::NewL(iConfig.iInterfaceToken);
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default:
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// Panic;
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__HOSTPRINT(_L("Unsupported Transport class requested"));
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User::Leave(KErrNotSupported);
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return NULL;
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}
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}
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void CUsbHostMsDevice::InitialiseL(const RMessage2& aMessage)
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{
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__MSFNLOG
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iTransport = InitialiseTransportL((TTransportType) iConfig.iTransportId);
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TRAPD(r, iDeviceSuspendResume = CUsbMsIfaceSuspendResume::NewL(iTransport, this));
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if(r != KErrNone)
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{
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delete iTransport;
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User::Leave(r);
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}
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iTransport->GetMaxLun(&iMaxLun, aMessage);
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}
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void CUsbHostMsDevice::UnInitialiseL()
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{
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__MSFNLOG
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StopTimer();
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iLuList.RemoveAllLuL();
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}
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TInt CUsbHostMsDevice::AddLunL(TLun aLun)
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{
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__MSFNLOG
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TInt r = KErrNone;
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StartTimer();
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CUsbHostMsLogicalUnit* lu = CUsbHostMsLogicalUnit::NewL(aLun);
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CleanupStack::PushL(lu);
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TRAP(r, lu->InitialiseProtocolL(aLun, iConfig, *iTransport));
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if (r == KErrNone)
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{
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TRAP(r, iLuList.AddLuL(lu));
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}
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if (r != KErrNone)
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{
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CleanupStack::PopAndDestroy(lu);
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}
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else
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{
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CleanupStack::Pop(lu);
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}
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return r;
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}
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void CUsbHostMsDevice::RemoveLunL(TLun aLun)
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{
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__MSFNLOG
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if(iLuList.Count() <= 1)
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StopTimer();
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iLuList.RemoveLuL(aLun);
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}
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void CUsbHostMsDevice::InitLunL(TLun aLun)
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{
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__MSFNLOG
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SetLunL(aLun);
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iLuList.GetLuL(aLun).InitL();
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}
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void CUsbHostMsDevice::SuspendLunL(TLun aLun)
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{
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__MSFNLOG
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iLuList.GetLuL(aLun).ReadyToSuspend();
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// check whether all the luns are suspended, if so then request usb
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// interface suspension to the transport layer
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for (TInt i = 0; i < iLuList.Count(); i++)
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{
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CUsbHostMsLogicalUnit& lu = iLuList.GetLuL(i);
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if (!lu.IsReadyToSuspend() && lu.IsConnected())
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return;
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}
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for (TInt i = 0; i < iLuList.Count(); i++)
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{
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CUsbHostMsLogicalUnit& lu = iLuList.GetLuL(i);
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SetLunL(lu.Lun());
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lu.SuspendL();
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}
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StopTimer();
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iDeviceSuspendResume->Suspend();
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iState = ESuspended;
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}
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TBool CUsbHostMsDevice::IsActive()
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{
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__MSFNLOG
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return (iState == EActive)? ETrue : EFalse;
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}
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TBool CUsbHostMsDevice::IsSuspended()
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{
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__MSFNLOG
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return (iState == ESuspended)? ETrue : EFalse;
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}
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void CUsbHostMsDevice::ResumeL(TRequestStatus &aStatus)
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{
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__MSFNLOG
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if (iState == ESuspended)
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{
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StartTimer();
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iDeviceSuspendResume->Resume(aStatus);
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}
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else
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{
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__HOSTPRINT(_L("CUsbHostMsDevice: Wierd we are not suspended but were asked to resume"));
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}
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}
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TLun CUsbHostMsDevice::GetAndSetLunL(const RMessage2& aMessage)
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{
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__MSFNLOG
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// Subssessions need a positive value to store in the handles. We represent Luns as LunId+1
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// We represent LunId in MSC from 0 to MaxLun-1 as represented in BOT so subtract 1 from the Id
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// received from RMessage
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TInt lun = aMessage.Int3() - 1;
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if (lun < 0)
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{
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User::Leave(KErrArgument);
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}
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SetLunL(static_cast<TLun>(lun));
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return static_cast<TLun>(lun);
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}
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CUsbHostMsLogicalUnit& CUsbHostMsDevice::GetLuL(TInt aLunNum) const
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{
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return iLuList.GetLuL(aLunNum);
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}
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void CUsbHostMsDevice::SetLunL(TLun aLun)
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{
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__MSFNLOG
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if (aLun <= iMaxLun)
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{
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__HOSTPRINT1(_L("SetLun %d"), aLun);
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iTransport->SetLun(aLun);
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CUsbHostMsLogicalUnit& lu = iLuList.GetLuL(aLun);
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if (lu.IsReadyToSuspend())
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{
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lu.CancelReadyToSuspend();
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}
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}
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}
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/**
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Starts timer to periodically check LUN. If the timer is not yet running then
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start it.
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*/
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void CUsbHostMsDevice::StartTimer()
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{
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__MSFNLOG
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if (!iTimerRunning)
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{
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// Period of the LUN Ready check
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const TTimeIntervalMicroSeconds32 KInterval = iConfig.iStatusPollingInterval * 1000 * 1000;
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TCallBack callback(TimerCallback, this);
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__HOSTPRINT(_L("Starting timer"));
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iTimer->Start(KInterval, KInterval, callback);
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iTimerRunning = ETrue;
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}
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}
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/**
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Ensure that the Timer is stopped
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*/
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void CUsbHostMsDevice::StopTimer()
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{
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__MSFNLOG
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if (iTimer && iTimerRunning)
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{
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__HOSTPRINT(_L("Stopping timer"));
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if (iTimer->IsActive())
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{
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iTimer->Cancel();
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}
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iTimerRunning = EFalse;
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}
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}
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/**
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A static wrapper for the DoLunReadyCheckEvent member function for use as a timer
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callback function.
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@param obj 'this' pointer
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@return not used in CPeriodic callback (see TCallback)
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*/
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TInt CUsbHostMsDevice::TimerCallback(TAny* obj)
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{
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__MSFNSLOG
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CUsbHostMsDevice* device = static_cast<CUsbHostMsDevice*>(obj);
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TRAPD(err, device->DoLunReadyCheckEventL());
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return err;
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}
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void CUsbHostMsDevice::DoLunReadyCheckEventL()
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{
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__MSFNLOG
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TInt err;
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for (TInt i = 0; i < iLuList.Count(); i++)
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{
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CUsbHostMsLogicalUnit& lu = iLuList.GetLuL(i);
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SetLunL(lu.Lun());
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TRAP(err, lu.DoLunReadyCheckL());
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}
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}
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void CUsbHostMsDevice::DoHandleRemoteWakeupL()
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{
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__MSFNLOG
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DoResumeLogicalUnitsL();
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DoLunReadyCheckEventL(); // For remote wakeup we do not wait for timer to expire
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// check whether all the luns are suspended, if so then request usb
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// interface suspension to the transport layer
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for (TInt i = 0; i < iLuList.Count(); i++)
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{
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CUsbHostMsLogicalUnit& lu = iLuList.GetLuL(i);
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// Has any of the logical units have got its state changed?
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if ( (lu.IsReadyToSuspend() && !lu.IsConnected()) ||
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(!lu.IsReadyToSuspend() && lu.IsConnected()) )
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{
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StartTimer(); // Now start the timer
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return;
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}
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}
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for (TInt i = 0; i < iLuList.Count(); i++)
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{
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CUsbHostMsLogicalUnit& lu = iLuList.GetLuL(i);
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SetLunL(lu.Lun());
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lu.SuspendL();
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}
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iDeviceSuspendResume->Suspend();
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iState = ESuspended;
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}
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void CUsbHostMsDevice::DoResumeLogicalUnitsL()
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{
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__MSFNLOG
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for (TInt i = 0; i < iLuList.Count(); i++)
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{
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CUsbHostMsLogicalUnit& lu = iLuList.GetLuL(i);
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SetLunL(lu.Lun());
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lu.ResumeL();
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}
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}
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void CUsbHostMsDevice::ResumeCompletedL()
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{
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__MSFNLOG
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iState = EActive;
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DoResumeLogicalUnitsL();
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}
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