sl@0: // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @internalTechnology
sl@0: */
sl@0: 
sl@0: #include <f32fsys.h>
sl@0: #include <e32property.h>
sl@0: 
sl@0: #include "hostusbmsproxy.h"
sl@0: #include "hostusbmsfactory.h"
sl@0: #include "debug.h"
sl@0: 
sl@0: CUsbHostMsProxyDriveFactory::CUsbHostMsProxyDriveFactory()
sl@0: 	{
sl@0: 	__MSFNSLOG
sl@0: 	}
sl@0: 
sl@0: CUsbHostMsProxyDriveFactory::~CUsbHostMsProxyDriveFactory()
sl@0: 	{
sl@0: 	__MSFNSLOG
sl@0: 	}
sl@0: 
sl@0: TInt CUsbHostMsProxyDriveFactory::Install()
sl@0: 	{
sl@0: 	__MSFNSLOG
sl@0: 	_LIT(KLoggerName,"usbhostms");
sl@0: 	return SetName(&KLoggerName);
sl@0: 	}
sl@0: 
sl@0: TInt CUsbHostMsProxyDriveFactory::CreateProxyDrive(CProxyDrive*& aMountProxyDrive,CMountCB* aMount)
sl@0: 	{
sl@0: 	__MSFNSLOG
sl@0:     aMountProxyDrive = new CUsbHostMsProxyDrive(aMount,this);
sl@0:     return (aMountProxyDrive==NULL) ? KErrNoMemory : KErrNone;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: extern "C" {
sl@0: 
sl@0: 
sl@0: /* 
sl@0: Create the proxy drive factory object for the usbhost mass storage proxy
sl@0: */
sl@0: EXPORT_C CExtProxyDriveFactory* CreateFileSystem()
sl@0: 	{
sl@0: 	__MSFNSLOG
sl@0: 	return new CUsbHostMsProxyDriveFactory();
sl@0: 	}
sl@0: }
sl@0: 
sl@0: /*
sl@0: This function will be called to kick off a speculative probe for USB mass storage devices.
sl@0: This function issues an application session request (through publish and subscribe) to the USB manager.
sl@0: Upon USB Manager receiving this application session request in consent with the USB watcher application,
sl@0: the Bus request is passed to the OTG  component to bringup the VBus, thus enumerating the mass storage
sl@0: devices Upon enumerating the FDF will communicate with the Mount Manager which will allocate mass storage 
sl@0: drives for the logical units and continues drive access through the Usb host mass storage proxy drive.
sl@0: 
sl@0: Ps: Note that the this request cant be handled by the MSC since, in the scenario where MSC is not running
sl@0: initially, the request will try to create the process. Creation of process will involve the file server inturn
sl@0: to load the MSC binary (.exe) to run. Since the RMessages are handled sequentially, the file server would not
sl@0: be able to service the request until the AsyncEnuerate is completed. Where, the process creation will wait 
sl@0: for the rendezvous to complete creating the deadlock situation. Hence the application session request is handled
sl@0: in the factory object itself!
sl@0: */
sl@0: void CUsbHostMsProxyDriveFactory::AsyncEnumerate()
sl@0: {
sl@0: 	__MSFNSLOG
sl@0: 
sl@0: 	RProperty prop;
sl@0: 	TInt ret;
sl@0: 
sl@0: 	/* The property category is the USB manager */
sl@0: 	const TUid KUidUsbManCategory={0x101fe1db};
sl@0: 	/* The Key used is #6 for the Usb request session */
sl@0: 	const TInt KUsbRequestSessionProperty = 6;
sl@0: 
sl@0: 	/* By this time the property should be available and allow us to get the handle.
sl@0: 		If the property is not created (for some reason), we do not have anything to do */
sl@0: 	ret = prop.Attach(KUidUsbManCategory, KUsbRequestSessionProperty);
sl@0:     __PXYPRINT1(_L("Property attach returned %d"),ret);
sl@0: 	if(ret == KErrNone)
sl@0:     {
sl@0: 		/* The Usb Manager does not evaluate the value passed through this property. 
sl@0: 			We pass 1 (an arbitary value) for completion */
sl@0: 		ret = prop.Set(KUidUsbManCategory, KUsbRequestSessionProperty, 1); 
sl@0: 	     __PXYPRINT1(_L("Property set returned %d"),ret);
sl@0: 		prop.Close();
sl@0: 	}
sl@0: }
sl@0: