2 * Copyright (c) 2003 The Regents of The University of Michigan
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.
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.
30 * Device module for modelling a fixed bandwidth full duplex ethernet link
33 #ifndef __ETHERLINK_HH__
34 #define __ETHERLINK_HH__
36 #include "sim/host.hh"
37 #include "sim/eventq.hh"
38 #include "dev/etherint.hh"
39 #include "dev/etherpkt.hh"
40 #include "sim/sim_object.hh"
45 * Model for a fixed bandwidth full duplex ethernet link
47 class EtherLink : public SimObject
53 * Model for a single uni-directional link
55 class Link : public Serializeable {
62 double ticks_per_byte;
67 * Transfer is complete
69 class DoneEvent : public Event
75 DoneEvent(EventQueue *q, Link *l)
76 : Event(q), link(l) {}
77 virtual void process() { link->txDone(); }
78 virtual const char *description()
79 { return "ethernet link completion"; }
82 friend class DoneEvent;
89 Link(const std::string &name, double rate, EtherDump *dump);
92 virtual std::string name() const { return objName; }
94 bool busy() const { return (bool)packet; }
95 bool transmit(PacketPtr packet);
97 void setTxInt(Interface *i) { assert(!txint); txint = i; }
98 void setRxInt(Interface *i) { assert(!rxint); rxint = i; }
102 * Interface at each end of the link
104 class Interface : public EtherInt
110 Interface(const std::string &name, Link *txlink, Link *rxlink);
111 bool recvPacket(PacketPtr packet) { return txlink->transmit(packet); }
122 EtherLink(const std::string &name, EtherInt *i1, EtherInt *i2,
123 Tick speed, EtherDump *dump);
124 virtual ~EtherLink();
127 #endif // __ETHERLINK_HH__