/*
* $Id$
*
* 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;
import org.jnode.driver.Bus;
import org.jnode.driver.Device;
import org.jnode.driver.bus.scsi.cdb.spc.CDBRequestSense;
import org.jnode.driver.bus.scsi.cdb.spc.InquiryData;
import org.jnode.driver.bus.scsi.cdb.spc.SenseData;
import org.jnode.util.TimeoutException;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public abstract class SCSIDevice extends Device {
/**
* @param bus
* @param id
*/
public SCSIDevice(Bus bus, String id) {
super(bus, id);
}
/**
* Get the device descriptor.
*/
public abstract InquiryData getDescriptor();
/**
* Execute a SCSI command on this device.
*
* @param cdb
* @param data
* @param dataOffset Offset in data where to start reading / writing
* @param timeout
* @return the number of transfered bytes.
*/
public abstract int executeCommand(CDB cdb, byte[] data,
int dataOffset, long timeout) throws SCSIException,
TimeoutException, InterruptedException;
/**
* Execute a request sense command.
*
* @return The requested sense data.
*/
public final SenseData requestSense() throws SCSIException, TimeoutException, InterruptedException {
final byte[] data = new byte[96];
final CDB cdb = new CDBRequestSense(data.length);
executeCommand(cdb, data, 0, SCSIConstants.GROUP_NOTIMEOUT);
return new SenseData(data);
}
public static final class SCSIDeviceAPIImpl implements SCSIDeviceAPI {
private final SCSIDevice dev;
public SCSIDeviceAPIImpl(SCSIDevice dev) {
this.dev = dev;
}
/**
* @return the number of transfered bytes.
* @see org.jnode.driver.bus.scsi.SCSIDeviceAPI#executeCommand(org.jnode.driver.bus.scsi.CDB,
* byte[], int, long)
*/
public int executeCommand(CDB cdb, byte[] data, int dataOffset,
long timeout) throws SCSIException, TimeoutException,
InterruptedException {
return dev.executeCommand(cdb, data, dataOffset, timeout);
}
/**
* @see org.jnode.driver.bus.scsi.SCSIDeviceAPI#getDescriptor()
*/
public final InquiryData getDescriptor() {
return dev.getDescriptor();
}
}
}