etherbus.hh revision 12130 
1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 */
30
31/* @file
32 * Device module for modelling an ethernet hub
33 */
34
35#ifndef __DEV_NET_ETHERBUS_HH__
36#define __DEV_NET_ETHERBUS_HH__
37
38#include "dev/net/etherobject.hh"
39#include "dev/net/etherpkt.hh"
40#include "params/EtherBus.hh"
41#include "sim/eventq.hh"
42#include "sim/sim_object.hh"
43
44class EtherDump;
45class EtherInt;
46class EtherBus : public EtherObject
47{
48  protected:
49    typedef std::list<EtherInt *> devlist_t;
50    devlist_t devlist;
51    double ticksPerByte;
52    bool loopback;
53
54  protected:
55    EventFunctionWrapper event;
56    EthPacketPtr packet;
57    EtherInt *sender;
58    EtherDump *dump;
59
60  public:
61    typedef EtherBusParams Params;
62    EtherBus(const Params *p);
63    virtual ~EtherBus() {}
64
65    const Params *
66    params() const
67    {
68        return dynamic_cast<const Params *>(_params);
69    }
70
71    void txDone();
72    void reg(EtherInt *dev);
73    bool busy() const { return (bool)packet; }
74    bool send(EtherInt *sender, EthPacketPtr &packet);
75    virtual EtherInt *getEthPort(const std::string &if_name, int idx);
76};
77
78#endif // __DEV_NET_ETHERBUS_HH__
79