usbmgmt/usbmgr/usbman/server/SRC/CUsbServer.cpp
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permissions -rw-r--r--
201026_03
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/*
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* Copyright (c) 1997-2010 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 "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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* Implements a Symbian OS server that exposes the RUsb API
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*
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*/
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/**
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 @file
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*/
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#include <e32svr.h>
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#include <usb/usblogger.h>
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#include "UsbSettings.h"
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#include "CUsbServer.h"
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#include "CUsbSession.h"
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#include "CUsbDevice.h"
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#ifdef SYMBIAN_ENABLE_USB_OTG_HOST_PRIV
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#include <e32property.h> //Publish & Subscribe header
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#include "CUsbOtg.h"
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#include "cusbhost.h"
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#endif // SYMBIAN_ENABLE_USB_OTG_HOST_PRIV
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#include "UsbmanServerSecurityPolicy.h"
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#include "OstTraceDefinitions.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "CUsbServerTraces.h"
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#endif
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/**
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 * The CUsbServer::NewL method
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 *
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 * Constructs a Usb Server
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 *
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 * @internalComponent
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 *
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 * @return	A new Usb Server object
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 */
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CUsbServer* CUsbServer::NewLC()
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	{
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	OstTraceFunctionEntry0( CUSBSERVER_NEWLC_ENTRY );
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	CUsbServer* self = new(ELeave) CUsbServer;
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	CleanupStack::PushL(self);
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	self->StartL(KUsbServerName);
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	self->ConstructL();
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	OstTraceFunctionExit0( CUSBSERVER_NEWLC_EXIT );
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	return self;
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	}
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/**
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 * The CUsbServer::~CUsbServer method
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 *
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 * Destructor
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 *
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 * @internalComponent
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 */
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CUsbServer::~CUsbServer()
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	{
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	OstTraceFunctionEntry0( CUSBSERVER_CUSBSERVER_DES_ENTRY );
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	delete iShutdownTimer;
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	delete iUsbDevice;
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#ifdef SYMBIAN_ENABLE_USB_OTG_HOST_PRIV
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	delete iUsbHost;
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#ifndef __OVER_DUMMYUSBDI__
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	// Check that this is A-Device
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	OstTrace0( TRACE_NORMAL, CUSBSERVER_CUSBSERVER, "CUsbServer::~CUsbServer; Checking Id-Pin state..." );
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	TInt value = 0;
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	TInt err = RProperty::Get(KUidUsbManCategory, KUsbOtgIdPinPresentProperty,value);
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	if (err == 0 && value == 1)
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		{
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		// Ensure VBus is dropped when Usb server exits
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		OstTrace0( TRACE_NORMAL, CUSBSERVER_CUSBSERVER_DUP1, "CUsbServer::~CUsbServer; Checking VBus state..." );
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		err = RProperty::Get(KUidUsbManCategory, KUsbOtgVBusPoweredProperty,value);
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		if ( err == KErrNone && value != 0 )
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			{
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			if ( iUsbOtg )
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				{
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				err = iUsbOtg->BusDrop();
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				OstTrace1( TRACE_NORMAL, CUSBSERVER_CUSBSERVER_DUP2, "CUsbServer::~CUsbServer;BusDrop() returned err = %d", err );
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				OstTrace0( TRACE_NORMAL, CUSBSERVER_CUSBSERVER_DUP3, "CUsbServer::~CUsbServer; USBMAN will wait until VBus is actually dropped" );
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				// Wait 1 second for Hub driver to perform VBus drop
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				RTimer timer;
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				err = timer.CreateLocal();
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				if ( err == KErrNone )
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					{
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					TRequestStatus tstatus;
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					timer.After(tstatus, 1000000);
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					User::WaitForRequest(tstatus);
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					timer.Close();
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					}
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				else
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					{
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					OstTrace1( TRACE_NORMAL, CUSBSERVER_CUSBSERVER_DUP4, "CUsbServer::~CUsbServer;Failed to create local timer: err = %d", err );
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					}
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				}
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			else
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				{
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				OstTrace0( TRACE_NORMAL, CUSBSERVER_CUSBSERVER_DUP5, "CUsbServer::~CUsbServer; Unexpected: OTG object is NULL" );
0
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				}
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			}
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		else
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			{
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			OstTraceExt2( TRACE_NORMAL, CUSBSERVER_CUSBSERVER_DUP6, "CUsbServer::~CUsbServer;VBus is already dropped or an error occured: err = %d, value =%d", err, value );
0
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			}
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		}
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	else
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		{
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		OstTraceExt2( TRACE_NORMAL, CUSBSERVER_CUSBSERVER_DUP7, "CUsbServer::~CUsbServer;No Id-Pin is found or an error occured: err = %d, value = %d", err, value );
0
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		}
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	delete iUsbOtg;
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#endif
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#endif // SYMBIAN_ENABLE_USB_OTG_HOST_PRIV
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	OstTraceFunctionExit0( CUSBSERVER_CUSBSERVER_DES_EXIT );
0
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	}
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/**
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 * The CUsbServer::CUsbServer method
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 *
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 * Constructor
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 *
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 * @internalComponent
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 */
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CUsbServer::CUsbServer()
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     : CPolicyServer(EPriorityHigh,KUsbmanServerPolicy)
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	{
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	}
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/**
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 * The CUsbServer::ConstructL method
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 *
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 * 2nd Phase Construction
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 *
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 * @internalComponent
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 */
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void CUsbServer::ConstructL()
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	{
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0
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	iShutdownTimer = new(ELeave) CShutdownTimer;
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	iShutdownTimer->ConstructL(); 
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#ifdef SYMBIAN_ENABLE_USB_OTG_HOST_PRIV
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#ifndef __OVER_DUMMYUSBDI__
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	iUsbOtg = CUsbOtg::NewL();
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	iUsbOtg->StartL();
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#endif
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#endif // SYMBIAN_ENABLE_USB_OTG_HOST_PRIV
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	iUsbDevice = CUsbDevice::NewL(*this);
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	OstTrace0( TRACE_NORMAL, CUSBSERVER_CONSTRUCTL, "CUsbServer::ConstructL; About to load USB classes" );
0
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	iUsbDevice->EnumerateClassControllersL();
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#ifndef USE_DUMMY_CLASS_CONTROLLER	
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	iUsbDevice->ReadPersonalitiesL();
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	if (iUsbDevice->isPersonalityCfged())
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		{
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#ifndef __OVER_DUMMYUSBDI__
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		iUsbDevice->ValidatePersonalitiesL();
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#endif
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		iUsbDevice->SetDefaultPersonalityL();		
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		}
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	else  
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		{
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		OstTrace0( TRACE_NORMAL, CUSBSERVER_CONSTRUCTL_DUP1, "CUsbServer::ConstructL;Personalities unconfigured, so using fallback CCs" );
0
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		iUsbDevice->LoadFallbackClassControllersL();
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		}
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#else // USE_DUMMY_CLASS_CONTROLLER
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	OstTrace0( TRACE_NORMAL, CUSBSERVER_CONSTRUCTL_DUP2, "CUsbServer::ConstructL; Using Dummy Class Controller, so using fallback CCs" );
0
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	iUsbDevice->LoadFallbackClassControllersL();
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#endif // USE_DUMMY_CLASS_CONTROLLER		
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#ifdef SYMBIAN_ENABLE_USB_OTG_HOST_PRIV
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	iUsbHost = CUsbHost::NewL();
12
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	//previously this was moved to CUsbSession:StartDeviceL() and similar
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	//But it will cause the loading of personality longer.
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	//So it is moved back here.
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	iUsbHost->StartL();
0
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#endif // SYMBIAN_ENABLE_USB_OTG_HOST_PRIV
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	OstTrace0( TRACE_NORMAL, CUSBSERVER_CONSTRUCTL_DUP3, "CUsbServer::ConstructL; CUsbServer constructed" );
0
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	}
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/**
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 * The CUsbServer::NewSessionL method
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 *
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 * Create a new client on this server
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 *
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 * @internalComponent
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 * @param	&aVersion	Vesion of client
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 * @param  	&aMessage 	Client's IPC message
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 *
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 * @return	A new USB session to be used for the client
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 */
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CSession2* CUsbServer::NewSessionL(const TVersion &aVersion, const RMessage2& aMessage) const
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	{
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	OstTraceFunctionEntry0( CUSBSERVER_NEWSESSIONL_ENTRY );
0
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	(void)aMessage;//Remove compiler warning
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	TVersion v(KUsbSrvMajorVersionNumber,KUsbSrvMinorVersionNumber,KUsbSrvBuildVersionNumber);
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	OstTrace0( TRACE_NORMAL, CUSBSERVER_NEWSESSIONL, "CUsbServer::NewSessionL; CUsbServer::NewSessionL - creating new session..." );
0
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	if (!User::QueryVersionSupported(v, aVersion))
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		{
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        OstTrace1( TRACE_NORMAL, CUSBSERVER_NEWSESSIONL_DUP1, "CUsbServer::NewSessionL;leave reason=%d", KErrNotSupported );
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		User::Leave(KErrNotSupported);
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		}
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	CUsbServer* ncThis = const_cast<CUsbServer*>(this);
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	CUsbSession* sess = CUsbSession::NewL(ncThis);
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	OstTraceFunctionExit0( CUSBSERVER_NEWSESSIONL_EXIT );
0
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	return sess;
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	}
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/**
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 * Inform the client there has been an error.
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 *
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 * @param	aError	The error that has occurred
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 */
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void CUsbServer::Error(TInt aError)
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	{
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	OstTrace1( TRACE_NORMAL, CUSBSERVER_ERROR, "CUsbServer::Error;aError=%d", aError );
0
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	Message().Complete(aError);
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	ReStart();
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	}
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/**
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 * Increment the open session count (iSessionCount) by one.
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 * 
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 * @post	the number of open sessions is incremented by one
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 */
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void CUsbServer::IncrementSessionCount()
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	{
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	OstTraceFunctionEntry0( CUSBSERVER_INCREMENTSESSIONCOUNT_ENTRY );
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	OstTrace1( TRACE_NORMAL, CUSBSERVER_INCREMENTSESSIONCOUNT, "CUsbServer::IncrementSessionCount;iSessionCount=%d", iSessionCount );
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	if(iSessionCount < 0)
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	    {
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        OstTrace1( TRACE_FATAL, CUSBSERVER_INCREMENTSESSIONCOUNT_DUP1, "CUsbServer::IncrementSessionCount;panic code=%d", EICSInvalidCount );
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        __ASSERT_DEBUG(EFalse, User::Panic(KUsbSvrPncCat, EICSInvalidCount));
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	    }
0
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	++iSessionCount;
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	iShutdownTimer->Cancel();
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	OstTraceFunctionExit0( CUSBSERVER_INCREMENTSESSIONCOUNT_EXIT );
0
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	}
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/**
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 * Decrement the open session count (iSessionCount) by one.
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 * 
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 * @post		the number of open sessions is decremented by one
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 */
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void CUsbServer::DecrementSessionCount()
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	{
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	OstTraceExt2( TRACE_NORMAL, CUSBSERVER_DECREMENTSESSIONCOUNT, "CUsbServer::DecrementSessionCount;iSessionCount=%d;Device().ServiceState()=%d", iSessionCount, Device().ServiceState() );
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	if(iSessionCount <= 0)
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	    {
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        OstTrace1( TRACE_FATAL, CUSBSERVER_DECREMENTSESSIONCOUNT_DUP1, "CUsbServer::DecrementSessionCount;panic code=%d", EDCSInvalidCount );
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        __ASSERT_DEBUG(EFalse, User::Panic(KUsbSvrPncCat, EDCSInvalidCount));
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	    }
0
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	--iSessionCount;
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	if (iSessionCount == 0 && Device().ServiceState() == EUsbServiceIdle)
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		{
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		iShutdownTimer->After(KShutdownDelay);
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		}
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	}
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/**
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 * If there are no sessions then launch the shutdown timer.  This function
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 * is provided for the case where the sole session stops the classes but dies
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 * before they are completely stopped.  The server must then be shut down
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 * from CUsbDevice::SetServiceState().
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 *
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 * @pre		the services have been stopped.
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 * @see		CUsbDevice::SetServiceStateIdle
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 */
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void CUsbServer::LaunchShutdownTimerIfNoSessions()
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	{
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	OstTraceFunctionEntry0( CUSBSERVER_LAUNCHSHUTDOWNTIMERIFNOSESSIONS_ENTRY );
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#ifdef _DEBUG
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	if(Device().ServiceState() != EUsbServiceIdle)
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	    {
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        OstTrace1( TRACE_FATAL, CUSBSERVER_LAUNCHSHUTDOWNTIMERIFNOSESSIONS, "CUsbServer::LaunchShutdownTimerIfNoSessions;panic code=%d", ELSTNSNotIdle );
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        User::Panic(KUsbSvrPncCat, ELSTNSNotIdle);
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	    }
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#endif
0
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	if (iSessionCount == 0)
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		iShutdownTimer->After(KShutdownDelay);
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	OstTraceFunctionExit0( CUSBSERVER_LAUNCHSHUTDOWNTIMERIFNOSESSIONS_EXIT );
0
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	}
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   320
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   321
/**
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 * Initialize this shutdown timer as a normal-priority
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 * (EPriorityStandard) active object.
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 */
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CUsbServer::CShutdownTimer::CShutdownTimer()
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:	CTimer(EPriorityStandard)
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	{
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	CActiveScheduler::Add(this);
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	}
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   330
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   331
/**
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 * Forwarding function call's CTimer's ConstructL() to initialize the RTimer.
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   333
 */
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void CUsbServer::CShutdownTimer::ConstructL()
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	{
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	CTimer::ConstructL();
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	}
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   338
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   339
/**
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 * Server shutdown callback.  This stops the active scheduler,
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 * and so closes down the server.
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 */
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void CUsbServer::CShutdownTimer::RunL()
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	{
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	CActiveScheduler::Stop();
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	}
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   347