lancedevicetodrivermapper.java

来自「纯java操作系统jnode,安装简单和操作简单的个人使用的Java操作系统」· Java 代码 · 共 51 行

/*
 * $Id: LanceDeviceToDriverMapper.java,v 1.1 2003/11/25 11:52:25 epr Exp $
 */
package org.jnode.driver.net.lance;

import org.jnode.driver.Device;
import org.jnode.driver.DeviceToDriverMapper;
import org.jnode.driver.Driver;
import org.jnode.driver.pci.PCIDevice;
import org.jnode.driver.pci.PCIDeviceConfig;
import org.jnode.driver.pci.PCI_IDs;

/**
 * @author epr
 */
public class LanceDeviceToDriverMapper implements DeviceToDriverMapper, LanceConstants, PCI_IDs {

	/**
	 * @see org.jnode.driver.DeviceToDriverMapper#findDriver(org.jnode.driver.Device)
	 */
	public Driver findDriver(Device device) {
		if (!(device instanceof PCIDevice)) {
			return null;
		}
		final PCIDevice dev = (PCIDevice)device;
		final PCIDeviceConfig config = dev.getConfig();
		if (config.getVendorID() != PCI_VENDOR_ID_AMD) {
			return null;
		}
		switch (config.getDeviceID()) {
			case PCI_DEVICE_ID_AMD_LANCE: return new LanceDriver(new LanceFlags());
			default: return null;
		}
	}

	
	/**
	 * Gets the matching level of this mapper.
	 * The mappers are queried in order of match level. This will ensure
	 * the best available driver for a device.
	 * 
	 * @return One of the MATCH_xxx constants.
	 * @see #MATCH_DEVICE_REVISION
	 * @see #MATCH_DEVICE
	 * @see #MATCH_DEVCLASS
	 */
	public int getMatchLevel() {
		return MATCH_DEVICE;
	}
}