1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/kernelhwsrv/userlibandfileserver/fileserver/shostmassstorage/msproxy/hostusbmsfactory.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,106 @@
     1.4 +// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of the License "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +/**
    1.20 + @file
    1.21 + @internalTechnology
    1.22 +*/
    1.23 +
    1.24 +#include <f32fsys.h>
    1.25 +#include <e32property.h>
    1.26 +
    1.27 +#include "hostusbmsproxy.h"
    1.28 +#include "hostusbmsfactory.h"
    1.29 +#include "debug.h"
    1.30 +
    1.31 +CUsbHostMsProxyDriveFactory::CUsbHostMsProxyDriveFactory()
    1.32 +	{
    1.33 +	__MSFNSLOG
    1.34 +	}
    1.35 +
    1.36 +CUsbHostMsProxyDriveFactory::~CUsbHostMsProxyDriveFactory()
    1.37 +	{
    1.38 +	__MSFNSLOG
    1.39 +	}
    1.40 +
    1.41 +TInt CUsbHostMsProxyDriveFactory::Install()
    1.42 +	{
    1.43 +	__MSFNSLOG
    1.44 +	_LIT(KLoggerName,"usbhostms");
    1.45 +	return SetName(&KLoggerName);
    1.46 +	}
    1.47 +
    1.48 +TInt CUsbHostMsProxyDriveFactory::CreateProxyDrive(CProxyDrive*& aMountProxyDrive,CMountCB* aMount)
    1.49 +	{
    1.50 +	__MSFNSLOG
    1.51 +    aMountProxyDrive = new CUsbHostMsProxyDrive(aMount,this);
    1.52 +    return (aMountProxyDrive==NULL) ? KErrNoMemory : KErrNone;
    1.53 +	}
    1.54 +
    1.55 +
    1.56 +extern "C" {
    1.57 +
    1.58 +
    1.59 +/* 
    1.60 +Create the proxy drive factory object for the usbhost mass storage proxy
    1.61 +*/
    1.62 +EXPORT_C CExtProxyDriveFactory* CreateFileSystem()
    1.63 +	{
    1.64 +	__MSFNSLOG
    1.65 +	return new CUsbHostMsProxyDriveFactory();
    1.66 +	}
    1.67 +}
    1.68 +
    1.69 +/*
    1.70 +This function will be called to kick off a speculative probe for USB mass storage devices.
    1.71 +This function issues an application session request (through publish and subscribe) to the USB manager.
    1.72 +Upon USB Manager receiving this application session request in consent with the USB watcher application,
    1.73 +the Bus request is passed to the OTG  component to bringup the VBus, thus enumerating the mass storage
    1.74 +devices Upon enumerating the FDF will communicate with the Mount Manager which will allocate mass storage 
    1.75 +drives for the logical units and continues drive access through the Usb host mass storage proxy drive.
    1.76 +
    1.77 +Ps: Note that the this request cant be handled by the MSC since, in the scenario where MSC is not running
    1.78 +initially, the request will try to create the process. Creation of process will involve the file server inturn
    1.79 +to load the MSC binary (.exe) to run. Since the RMessages are handled sequentially, the file server would not
    1.80 +be able to service the request until the AsyncEnuerate is completed. Where, the process creation will wait 
    1.81 +for the rendezvous to complete creating the deadlock situation. Hence the application session request is handled
    1.82 +in the factory object itself!
    1.83 +*/
    1.84 +void CUsbHostMsProxyDriveFactory::AsyncEnumerate()
    1.85 +{
    1.86 +	__MSFNSLOG
    1.87 +
    1.88 +	RProperty prop;
    1.89 +	TInt ret;
    1.90 +
    1.91 +	/* The property category is the USB manager */
    1.92 +	const TUid KUidUsbManCategory={0x101fe1db};
    1.93 +	/* The Key used is #6 for the Usb request session */
    1.94 +	const TInt KUsbRequestSessionProperty = 6;
    1.95 +
    1.96 +	/* By this time the property should be available and allow us to get the handle.
    1.97 +		If the property is not created (for some reason), we do not have anything to do */
    1.98 +	ret = prop.Attach(KUidUsbManCategory, KUsbRequestSessionProperty);
    1.99 +    __PXYPRINT1(_L("Property attach returned %d"),ret);
   1.100 +	if(ret == KErrNone)
   1.101 +    {
   1.102 +		/* The Usb Manager does not evaluate the value passed through this property. 
   1.103 +			We pass 1 (an arbitary value) for completion */
   1.104 +		ret = prop.Set(KUidUsbManCategory, KUsbRequestSessionProperty, 1); 
   1.105 +	     __PXYPRINT1(_L("Property set returned %d"),ret);
   1.106 +		prop.Close();
   1.107 +	}
   1.108 +}
   1.109 +