/*
* $Id$
*
* Copyright (C) 2003-2015 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.ide;
import java.util.ArrayList;
import javax.naming.NameNotFoundException;
import javax.naming.NamingException;
import org.apache.log4j.Logger;
import org.jnode.driver.Device;
import org.jnode.driver.DeviceAlreadyRegisteredException;
import org.jnode.driver.DeviceManager;
import org.jnode.driver.Driver;
import org.jnode.driver.DriverException;
import org.jnode.naming.InitialNaming;
import org.jnode.system.resource.ResourceNotFreeException;
import org.jnode.util.TimeoutException;
import org.jnode.work.Work;
import org.jnode.work.WorkUtils;
/**
* @author epr
*/
public class DefaultIDEControllerDriver extends Driver implements IDEControllerAPI {
/**
* My logger
*/
private static final Logger log = Logger.getLogger(DefaultIDEControllerDriver.class);
/**
* The actual worker
*/
private final IDEBus[] ideProcessors;
/**
* The actual IDE devices found
*/
private final ArrayList<IDEDevice> devices = new ArrayList<IDEDevice>();
private DeviceManager devMan;
/**
* Create a new instance
*/
public DefaultIDEControllerDriver() {
final int max = IDEConstants.IDE_NR_TASKFILES;
this.ideProcessors = new IDEBus[max];
}
/**
* Add the given command to the queue of commands to be executed and wait
* for the command to finish.
*
* @param command
*/
protected final void executeAndWait(IDECommand command, long timeout)
throws InterruptedException, TimeoutException {
final int idx = command.isPrimary() ? 0 : 1;
ideProcessors[idx].executeAndWait(command, timeout);
}
/**
* Probe for the existence of a given IDE device.
*
* @param taskfile The taskfile to probe. [0..1]
* @param master
*/
protected IDEDriveDescriptor probe(int taskfile, boolean master)
throws InterruptedException {
return ideProcessors[taskfile].probe(master);
}
protected void registerDevices() throws IDEException, DriverException {
log.debug("Probing IDE devices");
try {
devMan = InitialNaming.lookup(DeviceManager.NAME);
} catch (NameNotFoundException ex) {
throw new IDEException("Cannot find device manager", ex);
}
final IDEDriveDescriptor[] devs = new IDEDriveDescriptor[4];
try {
devs[0] = probe(0, true);
devs[1] = probe(0, false);
devs[2] = probe(1, true);
devs[3] = probe(1, false);
} catch (InterruptedException ex) {
throw new IDEException("Probe interrupted");
}
log.debug("After probe");
int count = 0;
IDEDeviceFactory factory;
try {
factory = IDEDriverUtils.getIDEDeviceFactory();
} catch (NamingException ex) {
throw new DriverException(ex);
}
for (int i = 0; i < devs.length; i++) {
final IDEDriveDescriptor descr = devs[i];
if (descr != null) {
final String name = "hd" + ((char) ('a' + i));
final IDEDevice dev = factory.createIDEDevice(ideProcessors[i / 2],
((i / 2) == 0), ((i % 2) == 0), name, descr, this);
try {
devMan.register(dev);
devices.add(dev);
log.info(name + "=" + descr.getModel());
count++;
} catch (DeviceAlreadyRegisteredException ex) {
log.error("Cannot reqister " + name, ex);
//throw new IDEException("Error in register device", ex);
} catch (DriverException ex) {
log.error("Cannot reqister " + name, ex);
//throw new IDEException("Error in register device", ex);
}
}
}
log.info("Found " + count + " IDE devices");
}
protected void unregisterDevices() throws DriverException {
for (IDEDevice dev : devices) {
devMan.unregister(dev);
}
}
/**
* Create and start the structures required by this driver.
*/
private void startDriver() throws ResourceNotFreeException, DriverException {
final Device dev = getDevice();
dev.registerAPI(IDEControllerAPI.class, this);
IDEDeviceFactory factory;
try {
factory = IDEDriverUtils.getIDEDeviceFactory();
} catch (NamingException ex) {
throw new DriverException(ex);
}
this.ideProcessors[0] = factory.createIDEBus(dev, true);
this.ideProcessors[1] = factory.createIDEBus(dev, false);
}
/**
* Stop and release the structures required by this driver.
*/
private void stopDriver() {
final Device dev = getDevice();
final int max = ideProcessors.length;
for (int i = 0; i < max; i++) {
ideProcessors[i].stop();
ideProcessors[i] = null;
}
dev.unregisterAPI(IDEControllerAPI.class);
}
/**
* Start the IDE controller device.
*
* @see org.jnode.driver.Driver#startDevice()
*/
protected void startDevice() throws DriverException {
try {
final Device dev = getDevice();
dev.getManager().rename(dev, IDEControllerAPI.DEVICE_PREFIX, true);
startDriver();
WorkUtils.add(new Work("IDE.registerDevices") {
public void execute() {
try {
registerDevices();
} catch (IDEException ex) {
log.error("Error starting IDE devices", ex);
} catch (DriverException ex) {
log.error("Error starting IDE devices", ex);
}
}
});
} catch (ResourceNotFreeException ex) {
throw new DriverException(ex);
} catch (DeviceAlreadyRegisteredException ex) {
throw new DriverException(ex);
}
}
/**
* Stop the IDE controller device.
*
* @see org.jnode.driver.Driver#stopDevice()
*/
protected void stopDevice() throws DriverException {
unregisterDevices();
stopDriver();
}
}