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// Copyright (c) 2004-2009 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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// Class implementation of CDriveManager and CMassStorageDrive.
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//
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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 <e32std.h>
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#include <e32base.h> // C Class Definitions, Cleanup Stack
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#include <e32def.h> // T Type Definitions
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#include <f32fsys.h>
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#include <e32property.h>
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#include "usbmsshared.h" // KUsbMsMaxDrives
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#include "drivemanager.h"
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#include "smassstorage.h"
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#include "OstTraceDefinitions.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "drivemanagerTraces.h"
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#endif
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///////////////////////////////////////////////////////////////////////////////
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/**
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A private structure that, when Connected, holds references to
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the CProxyDrive and the corresponding TBusLocalDrive's Media Changed flag.
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*/
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struct CMassStorageDrive::CLocalDriveRef : public CBase
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{
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CLocalDriveRef(CProxyDrive& aProxyDrive, TBool& aMediaChanged)
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: iProxyDrive(aProxyDrive), iMediaChanged(aMediaChanged), iDriveState(EIdle)
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{
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}
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CProxyDrive& iProxyDrive;
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TBool& iMediaChanged;
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/**
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The Drive Media state machine
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*/
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TDriveState iDriveState;
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};
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/**
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@param aCritSec A Critical Section object shared by all drives.
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@param aDrives Reference to the list of CMassStorageDrive objects.
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@param aDriveMap Reference to array mapping lun to drive number for supported
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mass storage drives.
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@post Object is fully constructed
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*/
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CMassStorageDrive::CMassStorageDrive(RCriticalSection& aCritSec,
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RDriveStateChangedPublisher& aDriveStateChangedPublisher)
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:
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iCritSec(aCritSec),
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iMountState(EDisconnected),
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iDriveStateChangedPublisher(aDriveStateChangedPublisher)
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{
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}
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CMassStorageDrive::~CMassStorageDrive()
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{
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delete iLocalDrive;
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}
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/**
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Read from the target drive unit.
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@return KErrNone on success, otherwise system wide error code
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*/
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TInt CMassStorageDrive::Read(const TInt64& aPos, TInt aLength, TDes8& aBuf, TBool aWholeMedia)
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{
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TInt err = KErrUnknown; // never return this
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iCritSec.Wait();
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if(iMountState != EConnected)
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{
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err = KErrDisconnected;
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}
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else
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{
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if(aWholeMedia)
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{
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err = SafeProxyDrive().Read(aPos, aLength, &aBuf, KLocalMessageHandle, 0, RLocalDrive::ELocDrvWholeMedia);
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}
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else
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{
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err = SafeProxyDrive().Read(aPos, aLength, aBuf);
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}
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if(err == KErrNone)
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{
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#ifndef USB_TRANSFER_PUBLISHER
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iBytesRead += aBuf.Length();
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OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_100,
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"iBytesRead=%d", iBytesRead);
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#endif
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}
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else if(err == KErrLocked)
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{
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SetDriveState(ELocked);
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}
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}
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iCritSec.Signal();
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return err;
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}
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/**
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Write to the target drive unit.
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@return KErrNone on success, otherwise system wide error code
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*/
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TInt CMassStorageDrive::Write(const TInt64& aPos, TDesC8& aBuf, TBool aWholeMedia)
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{
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TInt err = KErrNone;
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iCritSec.Wait();
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if (iMountState != EConnected)
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{
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err = KErrDisconnected;
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}
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else
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{
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__ASSERT_DEBUG(iLocalDrive, User::Panic(KUsbMsSvrPncCat, EMsCMassStorageDriveWrite));
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TDriveState oldState = iLocalDrive->iDriveState;
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if(oldState != EActive)
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{
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// SCSI hasn't called SetCritical
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SetDriveState(EActive);
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}
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if (aWholeMedia)
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{
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err = SafeProxyDrive().Write(aPos, aBuf.Length(), &aBuf, KLocalMessageHandle, 0, RLocalDrive::ELocDrvWholeMedia);
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}
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else
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{
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err = SafeProxyDrive().Write(aPos,aBuf);
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}
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if (err == KErrNone)
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{
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#ifndef USB_TRANSFER_PUBLISHER
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iBytesWritten += aBuf.Length();
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#endif
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}
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if (err == KErrLocked)
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{
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SetDriveState(ELocked);
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}
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else if (oldState != EActive)
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{
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SetDriveState(oldState);
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}
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}
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iCritSec.Signal();
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return err;
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}
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/**
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Get the capabilities of the target drive unit.
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@return KErrNone on success, otherwise system wide error code
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*/
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TInt CMassStorageDrive::Caps(TLocalDriveCapsV4& aInfo)
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{
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TInt err = KErrNone;
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iCritSec.Wait();
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if(iMountState != EConnected)
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{
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err = KErrDisconnected;
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}
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else
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{
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// Initialise in case Caps() fails
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aInfo.iType = ::EMediaUnknown;
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err = DoCaps(aInfo);
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OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_110,
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"err=%d", err);
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if(err == KErrNotReady || (err==KErrNone && aInfo.iType == ::EMediaNotPresent))
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{
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OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_111,
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"detected MediaNotPresent");
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SetDriveState(CMassStorageDrive::EMediaNotPresent);
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}
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}
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iCritSec.Signal();
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return err;
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}
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/**
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Provides an interface to CProxyDrive::Caps that hides the
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package buffer.
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@return KErrNone on success, otherwise system wide error code
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@param aInfo
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*/
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TInt CMassStorageDrive::DoCaps(TLocalDriveCapsV4& aInfo)
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{
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TLocalDriveCapsV4Buf buf;
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buf.FillZ();
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CProxyDrive& pd = SafeProxyDrive();
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TInt err = pd.Caps(buf);
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OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_121,
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"Caps returned %d", err);
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if(err==KErrNone)
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{
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// Invoke function call operator to cast to TLocalDriveCapsV4&
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aInfo = buf();
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}
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return err;
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}
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/**
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Publish media error, user should reinsert the memory card.
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Similar to FAT32's TDriver::HandleCriticalError.
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Note: User notification is not implemented, instead we abort and dismount.
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*/
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TInt CMassStorageDrive::HandleCriticalError()
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{
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iDriveMediaErrorPublisher.PublishError(ETrue);
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return KErrAbort;
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}
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TInt CMassStorageDrive::ClearCriticalError()
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{
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iDriveMediaErrorPublisher.PublishError(EFalse);
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return KErrNone;
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}
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/**
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Checks the Media Changed flag, and optionally resets it.
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@return The state of the Media Changed flag.
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@param aReset If true, the Media Changed flag is reset to EFalse.
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*/
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TBool CMassStorageDrive::IsMediaChanged(TBool aReset)
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{
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iCritSec.Wait();
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TBool mediaChanged = EFalse;
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if(iLocalDrive)
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{
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mediaChanged = iLocalDrive->iMediaChanged;
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if(aReset)
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{
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iLocalDrive->iMediaChanged = EFalse;
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}
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}
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else
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{
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OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_130,
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"No drive");
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}
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iCritSec.Signal();
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OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_131,
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"IsMediaChanged returning %d", mediaChanged);
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return mediaChanged;
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}
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/**
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Set the Drive State to Active or Idle.
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@return KErrNone on success, KErrNotReady if media not present, KErrDisMounted if not mounted
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@param aCritical ETrue for Active, EFalse for Idle
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*/
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TInt CMassStorageDrive::SetCritical(TBool aCritical)
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{
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TInt err = KErrDisMounted;
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iCritSec.Wait();
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if(iLocalDrive)
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{
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if(iLocalDrive->iDriveState == CMassStorageDrive::EMediaNotPresent)
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{
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err = KErrNotReady;
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}
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else
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{
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SetDriveState(
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aCritical
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? CMassStorageDrive::EActive
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: CMassStorageDrive::EIdle );
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err = KErrNone;
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}
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}
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iCritSec.Signal();
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return err;
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}
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/**
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Set the mount state
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*/
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TInt CMassStorageDrive::SetMountConnected(CProxyDrive& aProxyDrive, TBool& aMediaChanged)
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{
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CLocalDriveRef* localDrive = NULL;
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OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_140,
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"SetMountConnected entering critical section");
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iCritSec.Wait(); // note: signalled in SetMountState
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if (iLocalDrive == NULL)
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{
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localDrive = new CLocalDriveRef(aProxyDrive, aMediaChanged);
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if (localDrive==NULL)
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{
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iCritSec.Signal();
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return KErrNoMemory;
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}
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}
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return SetMountState(EConnected, localDrive);
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}
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/**
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@return KErrNone
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@param aNewState
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@param aLocalDrive Only provide this if aNewState is EConnected.
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*/
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TInt CMassStorageDrive::SetMountState(TMountState aNewState, CLocalDriveRef* aLocalDrive/*=NULL*/)
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{
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if(iMountState == aNewState)
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{
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OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_150,
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"SetMountState: No change");
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}
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else
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{
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// If called from SetMountConnected, already in critical section,
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// otherwise, must enter it here.
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if(EConnected!=aNewState)
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{
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OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_151,
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"SetMountState entering critical section");
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iCritSec.Wait();
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}
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switch(aNewState)
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{
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case EConnected:
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if(aLocalDrive)
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{
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__ASSERT_DEBUG(iLocalDrive, User::Panic(KUsbMsSvrPncCat, EMsCMassStorageDriveSetMountState_iLocalDrive));
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iLocalDrive = aLocalDrive;
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}
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__ASSERT_DEBUG(iLocalDrive, User::Panic(KUsbMsSvrPncCat, EMsCMassStorageDriveSetMountState_aLocalDrive));
|
|
|
377 |
break;
|
|
0
|
378 |
|
|
286
|
379 |
case EDisconnected:
|
|
|
380 |
delete iLocalDrive;
|
|
|
381 |
iLocalDrive = NULL;
|
|
0
|
382 |
#ifndef USB_TRANSFER_PUBLISHER
|
|
286
|
383 |
iBytesWritten = iBytesRead = 0;
|
|
0
|
384 |
#endif
|
|
286
|
385 |
break;
|
|
|
386 |
|
|
|
387 |
case EDisconnecting:
|
|
|
388 |
case EConnecting:
|
|
|
389 |
// Do not change iLocalDrive for these state changes
|
|
|
390 |
break;
|
|
|
391 |
}
|
|
0
|
392 |
|
|
286
|
393 |
iMountState = aNewState;
|
|
|
394 |
OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_152,
|
|
|
395 |
"SetMountState: state=%d", iMountState);
|
|
|
396 |
|
|
|
397 |
iDriveStateChangedPublisher.DriveStateChanged();
|
|
0
|
398 |
|
|
286
|
399 |
iCritSec.Signal();
|
|
|
400 |
OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_153,
|
|
|
401 |
"SetMountState has left the critical section");
|
|
|
402 |
}
|
|
0
|
403 |
|
|
286
|
404 |
return KErrNone;
|
|
|
405 |
}
|
|
0
|
406 |
|
|
|
407 |
/**
|
|
|
408 |
@return Current drive media state
|
|
|
409 |
*/
|
|
|
410 |
CMassStorageDrive::TDriveState CMassStorageDrive::DriveState() const
|
|
286
|
411 |
{
|
|
|
412 |
return iLocalDrive ? iLocalDrive->iDriveState : EErrDisMounted;
|
|
|
413 |
}
|
|
0
|
414 |
|
|
|
415 |
/**
|
|
|
416 |
Check for media not present, and return the drive state.
|
|
|
417 |
@return Current drive media state
|
|
|
418 |
*/
|
|
|
419 |
CMassStorageDrive::TDriveState CMassStorageDrive::CheckDriveState()
|
|
286
|
420 |
{
|
|
|
421 |
CMassStorageDrive::TDriveState state = EErrDisMounted;
|
|
0
|
422 |
|
|
286
|
423 |
iCritSec.Wait();
|
|
0
|
424 |
|
|
286
|
425 |
if (iLocalDrive)
|
|
|
426 |
{
|
|
|
427 |
TInt err = KErrGeneral;
|
|
|
428 |
TLocalDriveCapsV4 caps;
|
|
0
|
429 |
|
|
286
|
430 |
FOREVER
|
|
|
431 |
{
|
|
|
432 |
// Initialise in case Caps() fails
|
|
|
433 |
caps.iType = ::EMediaNotPresent;
|
|
0
|
434 |
|
|
286
|
435 |
err = DoCaps(caps);
|
|
|
436 |
OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_160,
|
|
|
437 |
"DoCaps err=%d", err);
|
|
|
438 |
if (err == KErrNotReady || (err == KErrNone && caps.iType == ::EMediaNotPresent))
|
|
|
439 |
{
|
|
|
440 |
OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_161,
|
|
|
441 |
"Detected MediaNotPresent");
|
|
0
|
442 |
|
|
286
|
443 |
SetDriveState(CMassStorageDrive::EMediaNotPresent);
|
|
0
|
444 |
|
|
286
|
445 |
if (HandleCriticalError() == KErrAbort)
|
|
|
446 |
break;
|
|
|
447 |
}
|
|
|
448 |
else
|
|
|
449 |
{
|
|
|
450 |
ClearCriticalError();
|
|
|
451 |
break;
|
|
|
452 |
}
|
|
|
453 |
}
|
|
0
|
454 |
|
|
286
|
455 |
if (err == KErrNone && caps.iType != ::EMediaNotPresent)
|
|
|
456 |
{
|
|
|
457 |
if (iLocalDrive->iDriveState == CMassStorageDrive::EMediaNotPresent)
|
|
|
458 |
{
|
|
|
459 |
OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_162,
|
|
|
460 |
"Detected media inserted");
|
|
|
461 |
SetDriveState(CMassStorageDrive::EIdle);
|
|
|
462 |
}
|
|
|
463 |
else if (iLocalDrive->iDriveState == CMassStorageDrive::ELocked &&
|
|
|
464 |
!(caps.iMediaAtt & KMediaAttLocked))
|
|
|
465 |
{
|
|
|
466 |
OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_163,
|
|
|
467 |
"Detected media unlocked");
|
|
|
468 |
SetDriveState(CMassStorageDrive::EIdle);
|
|
|
469 |
}
|
|
|
470 |
else if (caps.iMediaAtt & KMediaAttLocked)
|
|
|
471 |
{
|
|
|
472 |
OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_164,
|
|
|
473 |
"Detected media locked");
|
|
|
474 |
SetDriveState(CMassStorageDrive::ELocked);
|
|
|
475 |
}
|
|
0
|
476 |
|
|
286
|
477 |
iWholeMediaAccess = !(caps.iDriveAtt & KDriveAttLogicallyRemovable);
|
|
|
478 |
}
|
|
0
|
479 |
|
|
286
|
480 |
// Get the current state
|
|
|
481 |
state = iLocalDrive->iDriveState;
|
|
|
482 |
}
|
|
0
|
483 |
|
|
286
|
484 |
iCritSec.Signal();
|
|
|
485 |
|
|
|
486 |
return state;
|
|
|
487 |
}
|
|
0
|
488 |
|
|
|
489 |
static TBool IsActive(CMassStorageDrive::TDriveState aDriveState)
|
|
286
|
490 |
{
|
|
|
491 |
return aDriveState==CMassStorageDrive::EActive;
|
|
|
492 |
}
|
|
0
|
493 |
|
|
|
494 |
/**
|
|
|
495 |
@param aNewState
|
|
|
496 |
*/
|
|
|
497 |
void CMassStorageDrive::SetDriveState(TDriveState aNewState)
|
|
286
|
498 |
{
|
|
|
499 |
__ASSERT_DEBUG(aNewState == EIdle ||
|
|
0
|
500 |
(iMountState == EConnected && NULL != iLocalDrive) ||
|
|
|
501 |
(iMountState == EDisconnecting && NULL != iLocalDrive),
|
|
286
|
502 |
User::Panic(KUsbMsSvrPncCat, EMsCMassStorageDriveSetDriveState_State));
|
|
0
|
503 |
|
|
286
|
504 |
if(!iLocalDrive)
|
|
|
505 |
{
|
|
|
506 |
OstTrace0(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_170,
|
|
|
507 |
"Drive not mounted.");
|
|
|
508 |
}
|
|
|
509 |
else
|
|
|
510 |
{
|
|
|
511 |
OstTraceExt2(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_171,
|
|
|
512 |
"Drive state change %d->%d", iLocalDrive->iDriveState, aNewState);
|
|
|
513 |
|
|
|
514 |
if(iLocalDrive->iDriveState != aNewState)
|
|
|
515 |
{
|
|
|
516 |
CMountCB* mount = SafeProxyDrive().Mount();
|
|
|
517 |
__ASSERT_DEBUG(mount != NULL, User::Panic(KUsbMsSvrPncCat, EMsCMassStorageDriveSetDriveState_Mount));
|
|
0
|
518 |
|
|
286
|
519 |
if(mount)
|
|
|
520 |
{
|
|
|
521 |
if(!IsActive(iLocalDrive->iDriveState) && IsActive(aNewState))
|
|
|
522 |
{
|
|
|
523 |
mount->IncLock();
|
|
|
524 |
}
|
|
|
525 |
else if(IsActive(iLocalDrive->iDriveState) && !IsActive(aNewState))
|
|
|
526 |
{
|
|
|
527 |
mount->DecLock();
|
|
|
528 |
}
|
|
|
529 |
OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_172,
|
|
|
530 |
"LockStatus=%d", mount->LockStatus());
|
|
|
531 |
}
|
|
0
|
532 |
|
|
286
|
533 |
iLocalDrive->iDriveState = aNewState;
|
|
0
|
534 |
|
|
286
|
535 |
iDriveStateChangedPublisher.DriveStateChanged();
|
|
|
536 |
}
|
|
|
537 |
}
|
|
|
538 |
}
|
|
0
|
539 |
|
|
|
540 |
/**
|
|
|
541 |
Accessor for iProxyDrive; asserts if NULL
|
|
|
542 |
*/
|
|
|
543 |
CProxyDrive& CMassStorageDrive::SafeProxyDrive() const
|
|
286
|
544 |
{
|
|
|
545 |
__ASSERT_ALWAYS(NULL!=iLocalDrive, User::Invariant());
|
|
|
546 |
return iLocalDrive->iProxyDrive;
|
|
|
547 |
}
|
|
0
|
548 |
|
|
|
549 |
/////////////////////////////////////////////////////////////////
|
|
|
550 |
|
|
|
551 |
/**
|
|
|
552 |
Construct a CDriveManager object.
|
|
286
|
553 |
@param aDriveMap Reference to array mapping lun to drive number for supported
|
|
|
554 |
mass storage drives.
|
|
0
|
555 |
*/
|
|
|
556 |
CDriveManager* CDriveManager::NewL(TRefDriveMap aDriveMap)
|
|
286
|
557 |
{
|
|
|
558 |
OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_180,
|
|
|
559 |
"%d drives available", aDriveMap.Count());
|
|
0
|
560 |
|
|
286
|
561 |
CDriveManager* self = new (ELeave) CDriveManager(aDriveMap);
|
|
|
562 |
CleanupStack::PushL(self);
|
|
|
563 |
self->ConstructL();
|
|
|
564 |
CleanupStack::Pop();
|
|
|
565 |
return self;
|
|
|
566 |
}
|
|
0
|
567 |
|
|
|
568 |
CDriveManager::CDriveManager(const RArray<TInt>& aDriveMap)
|
|
286
|
569 |
: iDriveMap(aDriveMap)
|
|
|
570 |
{}
|
|
0
|
571 |
|
|
|
572 |
/**
|
|
|
573 |
Construct a CDriveManager object.
|
|
|
574 |
*/
|
|
|
575 |
void CDriveManager::ConstructL()
|
|
286
|
576 |
{
|
|
|
577 |
User::LeaveIfError(iDriveCritSec.CreateLocal());
|
|
0
|
578 |
|
|
286
|
579 |
iDriveStateChangedPublisher = new (ELeave) RDriveStateChangedPublisher(iDrives, iDriveMap);
|
|
0
|
580 |
|
|
286
|
581 |
for(TInt i = 0; i < iDriveMap.Count(); i++)
|
|
|
582 |
{
|
|
|
583 |
iDrives[i] = new (ELeave) CMassStorageDrive(iDriveCritSec, *iDriveStateChangedPublisher);
|
|
|
584 |
}
|
|
0
|
585 |
|
|
286
|
586 |
// Publish initial drive state
|
|
|
587 |
if (iDriveMap.Count() > 0)
|
|
|
588 |
{
|
|
|
589 |
iDriveStateChangedPublisher->DriveStateChanged();
|
|
|
590 |
}
|
|
|
591 |
}
|
|
0
|
592 |
|
|
|
593 |
/**
|
|
|
594 |
Destructor
|
|
|
595 |
*/
|
|
|
596 |
CDriveManager::~CDriveManager()
|
|
286
|
597 |
{
|
|
|
598 |
iDrives.DeleteAll();
|
|
|
599 |
delete iDriveStateChangedPublisher;
|
|
|
600 |
iDriveCritSec.Close();
|
|
|
601 |
}
|
|
0
|
602 |
|
|
|
603 |
/**
|
|
|
604 |
Set the mount state to Connected and specify the Proxy Drive.
|
|
|
605 |
@return KErrNone on success, otherwise system wide error code
|
|
|
606 |
@param aDrive The mounted Proxy Drive
|
|
|
607 |
@param aLun The Logical Drive Unit identifier (0..numDrives-1)
|
|
|
608 |
@pre If the Mount State is Connected, then aDrive must be the
|
|
|
609 |
same as it was the last time this function was called.
|
|
|
610 |
@post The Mount State will be Connected.
|
|
|
611 |
*/
|
|
|
612 |
TInt CDriveManager::RegisterDrive(CProxyDrive& aProxyDrive, TBool& aMediaChanged, TUint aLun)
|
|
286
|
613 |
{
|
|
|
614 |
OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_190, "Lun=%d", aLun);
|
|
|
615 |
TInt err = KErrUnknown; // never return this
|
|
|
616 |
CMassStorageDrive* drive = CDriveManager::Drive(aLun, err);
|
|
|
617 |
if(drive)
|
|
|
618 |
{
|
|
|
619 |
drive->SetMountConnected(aProxyDrive, aMediaChanged);
|
|
|
620 |
}
|
|
0
|
621 |
|
|
286
|
622 |
OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_191, "err=%d", err);
|
|
|
623 |
return err;
|
|
|
624 |
}
|
|
0
|
625 |
|
|
|
626 |
/**
|
|
|
627 |
Set the mount state to Disconnected.
|
|
|
628 |
@return KErrNone on success, otherwise system wide error code
|
|
|
629 |
@param aLun The Logical Drive Unit identifier (0..numDrives-1)
|
|
|
630 |
@post The Mount State will be Disconnected.
|
|
|
631 |
*/
|
|
|
632 |
TInt CDriveManager::DeregisterDrive(TUint aLun)
|
|
286
|
633 |
{
|
|
|
634 |
TInt err = KErrUnknown; // never return this
|
|
|
635 |
if(CMassStorageDrive* drive = Drive(aLun, err))
|
|
|
636 |
{
|
|
|
637 |
err = drive->SetMountDisconnected();
|
|
|
638 |
}
|
|
0
|
639 |
|
|
286
|
640 |
OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_200, "err=%d", err);
|
|
|
641 |
return err;
|
|
|
642 |
}
|
|
0
|
643 |
|
|
|
644 |
/**
|
|
|
645 |
Return a pointer to the drive specified aLun, or NULL if
|
|
|
646 |
aLun is invalid.
|
|
|
647 |
|
|
|
648 |
@return Pointer to the specified drive, or NULL.
|
|
|
649 |
@param aLun The Logical Drive Unit identifier (0..numDrives-1)
|
|
|
650 |
@param aError KErrNone on success, KErrArgument if NULL is returned.
|
|
|
651 |
*/
|
|
|
652 |
CMassStorageDrive* CDriveManager::Drive(TUint aLun, TInt& aError) const
|
|
286
|
653 |
{
|
|
|
654 |
aError = KErrNone;
|
|
|
655 |
CMassStorageDrive* drive = NULL;
|
|
0
|
656 |
|
|
286
|
657 |
// Check if aLun exceeds the specified number of drives
|
|
|
658 |
// (This will panic if it exceeds KMaxLun).
|
|
|
659 |
if(aLun>=KUsbMsMaxDrives || !iDrives[aLun])
|
|
|
660 |
{
|
|
|
661 |
aError = KErrArgument;
|
|
|
662 |
}
|
|
|
663 |
else
|
|
|
664 |
{
|
|
|
665 |
drive = iDrives[aLun];
|
|
|
666 |
}
|
|
|
667 |
return drive;
|
|
|
668 |
}
|
|
0
|
669 |
|
|
|
670 |
/**
|
|
|
671 |
Checks the Media Changed flag, and optionally resets it.
|
|
|
672 |
@return The state of the Media Changed flag.
|
|
|
673 |
@param aLun The Logical Drive Unit identifier (0..numDrives-1)
|
|
|
674 |
@param aReset If true, the Media Changed flag is reset to EFalse.
|
|
|
675 |
*/
|
|
|
676 |
TBool CDriveManager::IsMediaChanged(TUint aLun, TBool aReset)
|
|
286
|
677 |
{
|
|
|
678 |
TInt err; // not used, but is a required parameter
|
|
|
679 |
CMassStorageDrive* drive = Drive(aLun, err);
|
|
0
|
680 |
|
|
286
|
681 |
if(!drive)
|
|
|
682 |
{
|
|
|
683 |
OstTrace1(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_210,
|
|
|
684 |
"LUN=%d not found, returning false", aLun);
|
|
|
685 |
return ETrue;
|
|
|
686 |
}
|
|
|
687 |
else
|
|
|
688 |
{
|
|
|
689 |
return drive->IsMediaChanged(aReset);
|
|
|
690 |
}
|
|
|
691 |
}
|
|
0
|
692 |
|
|
|
693 |
/**
|
|
|
694 |
Set the Drive State to Active or Idle.
|
|
|
695 |
Ref: 3.6.3.2 - PREVENT_MEDIUM_REMOVAL
|
|
|
696 |
@return KErrNone on success, otherwise system wide error code
|
|
|
697 |
@param aLun The Logical Drive Unit identifier (0..numDrives-1)
|
|
|
698 |
@param aCritical ETrue for Active, EFalse for Idle
|
|
|
699 |
*/
|
|
|
700 |
TInt CDriveManager::SetCritical(TUint aLun, TBool aCritical)
|
|
286
|
701 |
{
|
|
|
702 |
TInt err = KErrUnknown; // never return this
|
|
|
703 |
|
|
|
704 |
TInt i=aLun;
|
|
|
705 |
TInt cnt=aLun+1;
|
|
0
|
706 |
|
|
286
|
707 |
if (aLun == KAllLuns)
|
|
|
708 |
{
|
|
|
709 |
i=0;
|
|
|
710 |
cnt= iDriveMap.Count();
|
|
|
711 |
}
|
|
0
|
712 |
|
|
286
|
713 |
for(; i<cnt; i++)
|
|
|
714 |
{
|
|
0
|
715 |
|
|
286
|
716 |
CMassStorageDrive* drive = Drive(i, err);
|
|
|
717 |
if(drive)
|
|
|
718 |
{
|
|
|
719 |
err = drive->SetCritical(aCritical);
|
|
|
720 |
}
|
|
|
721 |
}
|
|
|
722 |
return err;
|
|
|
723 |
}
|
|
0
|
724 |
|
|
|
725 |
/**
|
|
|
726 |
Inititiate transition to Connected.
|
|
|
727 |
@return KErrNone on success, otherwise system wide error code
|
|
|
728 |
@param aLun The Logical Drive Unit identifier (0..numDrives-1)
|
|
|
729 |
@post The Mount State will be Connected or Connecting.
|
|
|
730 |
*/
|
|
|
731 |
TInt CDriveManager::Connect(TUint aLun)
|
|
286
|
732 |
{
|
|
|
733 |
TInt err = KErrUnknown; // never return this
|
|
|
734 |
CMassStorageDrive* drive = Drive(aLun, err);
|
|
0
|
735 |
|
|
286
|
736 |
OstTraceExt3(TRACE_SMASSSTORAGE_DRIVESTATE, DRIVERMANAGER_230,
|
|
|
737 |
"lun=%d err=%d mountState=%d", aLun, err, drive->MountState());
|
|
0
|
738 |
|
|
286
|
739 |
if(drive)
|
|
|
740 |
{
|
|
|
741 |
switch(drive->MountState())
|
|
|
742 |
{
|
|
|
743 |
case CMassStorageDrive::EDisconnected:
|
|
|
744 |
err = drive->SetMountConnecting();
|
|
|
745 |
break;
|
|
|
746 |
case CMassStorageDrive::EDisconnecting:
|
|
|
747 |
err = drive->SetMountConnected();
|
|
|
748 |
break;
|
|
|
749 |
case CMassStorageDrive::EConnected:
|
|
|
750 |
case CMassStorageDrive::EConnecting:
|
|
|
751 |
// do nothing
|
|
|
752 |
break;
|
|
|
753 |
}
|
|
|
754 |
}
|
|
|
755 |
return err;
|
|
|
756 |
}
|
|
0
|
757 |
|
|
|
758 |
/**
|
|
|
759 |
Inititiate transition to Disconnected.
|
|
|
760 |
@return KErrNone on success, otherwise system wide error code
|
|
|
761 |
@param aLun The Logical Drive Unit identifier (0..numDrives-1)
|
|
|
762 |
@post The Mount State will be Disconnected or Disconnecting.
|
|
|
763 |
*/
|
|
|
764 |
TInt CDriveManager::Disconnect(TUint aLun)
|
|
286
|
765 |
{
|
|
|
766 |
TInt err = KErrUnknown; // never return this
|
|
|
767 |
CMassStorageDrive* drive = Drive(aLun, err);
|
|
0
|
768 |
|
|
286
|
769 |
if(drive)
|
|
|
770 |
{
|
|
|
771 |
switch(drive->MountState())
|
|
|
772 |
{
|
|
|
773 |
case CMassStorageDrive::EConnected:
|
|
|
774 |
err = drive->SetMountDisconnecting();
|
|
|
775 |
break;
|
|
|
776 |
case CMassStorageDrive::EConnecting:
|
|
|
777 |
err = drive->SetMountDisconnected();
|
|
|
778 |
break;
|
|
|
779 |
case CMassStorageDrive::EDisconnected:
|
|
|
780 |
case CMassStorageDrive::EDisconnecting:
|
|
|
781 |
// do nothing
|
|
|
782 |
break;
|
|
|
783 |
}
|
|
|
784 |
}
|
|
|
785 |
return err;
|
|
|
786 |
}
|
|
0
|
787 |
|
|
|
788 |
|