/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.driver.bus.scsi.cdb.mmc;
import org.jnode.driver.bus.scsi.CDB;
import org.jnode.driver.bus.scsi.SCSIConstants;
import org.jnode.driver.bus.scsi.SCSIDevice;
import org.jnode.driver.bus.scsi.SCSIException;
import org.jnode.util.TimeoutException;
/**
* Command utility methods for the Multimedia command set.
*
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public class MMCUtils {
/**
* Read the capacity data of a given SCSI device.
*
* @param dev
* @return the capacity
*/
public static CapacityData readCapacity(SCSIDevice dev)
throws SCSIException, TimeoutException, InterruptedException {
final byte[] data = new byte[CapacityData.DEFAULT_LENGTH];
final CDB cdb = new CDBReadCapacity();
dev.executeCommand(cdb, data, 0, SCSIConstants.GROUP1_TIMEOUT);
return new CapacityData(data);
}
/**
* Read data from the given device.
*
* @param dev
* @param lba
* @param nrBlocks
* @param data
* @param dataOffset
* @throws SCSIException
* @throws TimeoutException
* @throws InterruptedException
*/
public static void readData(SCSIDevice dev, int lba, int nrBlocks,
byte[] data, int dataOffset) throws SCSIException,
TimeoutException, InterruptedException {
final CDB cdb = new CDBRead10(lba, nrBlocks);
dev.executeCommand(cdb, data, dataOffset, SCSIConstants.GROUP1_TIMEOUT);
}
/**
* Set the media removal state to locak / unlock the device.
*
* @param prevent
* @param persistent
* @throws SCSIException
* @throws TimeoutException
* @throws InterruptedException
*/
public static void setMediaRemoval(SCSIDevice dev, boolean prevent,
boolean persistent) throws SCSIException, TimeoutException,
InterruptedException {
final CDB cdb = new CDBMediaRemoval(prevent, persistent);
dev.executeCommand(cdb, null, 0, SCSIConstants.GROUP1_TIMEOUT);
}
/**
* Start/stop/eject/load/idle/standby/sleep the device.
*
* @throws SCSIException
* @throws TimeoutException
* @throws InterruptedException
*/
public static void startStopUnit(SCSIDevice dev,
CDBStartStopUnit.Action action, boolean returnASAP)
throws SCSIException, TimeoutException, InterruptedException {
final CDB cdb = new CDBStartStopUnit(action, returnASAP);
dev.executeCommand(cdb, null, 0, SCSIConstants.GROUP1_TIMEOUT);
}
}