/*
* $Id$
*
* 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.net.eepro100;
import org.jnode.net.SocketBuffer;
import org.jnode.net.ethernet.EthernetConstants;
import org.jnode.system.resource.MemoryResource;
import org.jnode.system.resource.ResourceManager;
import org.jnode.util.NumberUtils;
import org.vmmagic.unboxed.Address;
/**
* @author flesire
*/
public class EEPRO100TxFD {
private int TxFDSize = 16;
private int DataBufferSize = 1536;
/**
* The actual data
*/
private final byte[] data;
/**
* MemoryResource mapper around data
*/
private final MemoryResource mem;
/**
* Offset within mem of first DPD
*/
private final int firstDPDOffset;
/**
* 32-bit address first DPD
*/
private final Address firstDPDAddress;
private int bufferAddress;
public EEPRO100TxFD(ResourceManager rm) {
// Create a large enough buffer
final int size = (TxFDSize + DataBufferSize) + 16 /* alignment */;
this.data = new byte[size];
this.mem = rm.asMemoryResource(data);
final Address memAddr = mem.getAddress();
this.firstDPDOffset = 0;
this.firstDPDAddress = memAddr.add(firstDPDOffset);
}
/**
* Initialize this ring to its default (empty) state
*/
public void initialize(SocketBuffer src) {
// Setup the DPD
// Copy the data from the buffer
final int len = src.getSize();
if (len > EthernetConstants.ETH_FRAME_LEN) {
throw new IllegalArgumentException(
"Length must be <= ETH_FRAME_LEN");
}
src.get(data, firstDPDOffset, 0, len);
}
/**
* Gets the address of the first DPD in this buffer.
*/
public Address getFirstDPDAddress() {
return firstDPDAddress;
}
final int getStatus() {
return mem.getInt(0);
}
final void setStatus(int value) {
mem.setInt(0, value);
}
final int getCommand() {
return mem.getInt(2);
}
final void setCommand(int value) {
mem.setInt(2, value);
}
final int getLink() {
return mem.getInt(4);
}
final void setLink(int value) {
mem.setInt(4, value);
}
final void setDescriptorAddress(int value) {
mem.setInt(8, value);
}
final int getCount() {
return mem.getInt(12);
}
final void setCount(int value) {
mem.setInt(12, value);
}
int getBufferAddress() {
return this.bufferAddress;
}
void bufferAddress0(int address) {
mem.setInt(16, address);
}
void bufferSize0(int size) {
mem.setInt(20, size);
}
// put paramater array into the cmd buffer
void setParams(byte[] p) {
for (int i = 0; i < p.length; i++) {
mem.setShort(i + 8, p[i]);
}
}
public int getFirstDPDOffset() {
return firstDPDOffset;
}
public String toString() {
StringBuilder str = new StringBuilder();
str.append("Status : ");
str.append(NumberUtils.hex(this.getStatus()));
str.append('\n');
str.append("Command : ");
str.append(NumberUtils.hex(this.getCommand()));
str.append('\n');
str.append("Link : ");
str.append(NumberUtils.hex(this.getLink()));
str.append('\n');
str.append("Count : ");
str.append(NumberUtils.hex(this.getCount()));
str.append('\n');
return str.toString();
}
}