2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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28 * Authors: Nathan Binkert
32 * Device module for modelling a fixed bandwidth full duplex ethernet link
35 #ifndef __DEV_ETHERLINK_HH__
36 #define __DEV_ETHERLINK_HH__
38 #include "base/types.hh"
39 #include "dev/etherint.hh"
40 #include "dev/etherobject.hh"
41 #include "dev/etherpkt.hh"
42 #include "params/EtherLink.hh"
43 #include "params/EtherLink.hh"
44 #include "sim/eventq.hh"
45 #include "sim/sim_object.hh"
50 * Model for a fixed bandwidth full duplex ethernet link
52 class EtherLink : public EtherObject
57 friend class LinkDelayEvent;
59 * Model for a single uni-directional link
79 * Transfer is complete
83 typedef EventWrapper<Link, &Link::txDone> DoneEvent;
84 friend void DoneEvent::process();
87 friend class LinkDelayEvent;
88 void txComplete(EthPacketPtr packet);
91 Link(const std::string &name, EtherLink *p, int num,
92 double rate, Tick delay, Tick delay_var, EtherDump *dump);
95 const std::string name() const { return objName; }
97 bool busy() const { return (bool)packet; }
98 bool transmit(EthPacketPtr packet);
100 void setTxInt(Interface *i) { assert(!txint); txint = i; }
101 void setRxInt(Interface *i) { assert(!rxint); rxint = i; }
103 void serialize(const std::string &base, std::ostream &os);
104 void unserialize(const std::string &base, Checkpoint *cp,
105 const std::string §ion);
109 * Interface at each end of the link
111 class Interface : public EtherInt
117 Interface(const std::string &name, Link *txlink, Link *rxlink);
118 bool recvPacket(EthPacketPtr packet) { return txlink->transmit(packet); }
119 void sendDone() { peer->sendDone(); }
120 bool isBusy() { return txlink->busy(); }
124 Interface *interface[2];
127 typedef EtherLinkParams Params;
128 EtherLink(const Params *p);
129 virtual ~EtherLink();
134 return dynamic_cast<const Params *>(_params);
137 virtual EtherInt *getEthPort(const std::string &if_name, int idx);
139 virtual void serialize(std::ostream &os);
140 virtual void unserialize(Checkpoint *cp, const std::string §ion);
144 #endif // __ETHERLINK_HH__