etherlink.hh revision 56
12292SN/A/* 22727Sktlim@umich.edu * Copyright (c) 2003 The Regents of The University of Michigan 32292SN/A * All rights reserved. 42292SN/A * 52292SN/A * Redistribution and use in source and binary forms, with or without 62292SN/A * modification, are permitted provided that the following conditions are 72292SN/A * met: redistributions of source code must retain the above copyright 82292SN/A * notice, this list of conditions and the following disclaimer; 92292SN/A * redistributions in binary form must reproduce the above copyright 102292SN/A * notice, this list of conditions and the following disclaimer in the 112292SN/A * documentation and/or other materials provided with the distribution; 122292SN/A * neither the name of the copyright holders nor the names of its 132292SN/A * contributors may be used to endorse or promote products derived from 142292SN/A * this software without specific prior written permission. 152292SN/A * 162292SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172292SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182292SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192292SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202292SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212292SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222292SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232292SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242292SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252292SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262292SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272689Sktlim@umich.edu */ 282689Sktlim@umich.edu 292292SN/A/* @file 302292SN/A * Device module for modelling a fixed bandwidth full duplex ethernet link 312329SN/A */ 322980Sgblack@eecs.umich.edu 332329SN/A#ifndef __ETHERLINK_HH__ 342329SN/A#define __ETHERLINK_HH__ 352292SN/A 362292SN/A#include "sim/host.hh" 375529Snate@binkert.org#include "sim/eventq.hh" 385529Snate@binkert.org#include "dev/etherint.hh" 394192Sktlim@umich.edu#include "dev/etherpkt.hh" 404192Sktlim@umich.edu#include "sim/sim_object.hh" 414192Sktlim@umich.edu 424192Sktlim@umich.educlass EtherDump; 434192Sktlim@umich.edu 444192Sktlim@umich.edu/* 454192Sktlim@umich.edu * Model for a fixed bandwidth full duplex ethernet link 464192Sktlim@umich.edu */ 474192Sktlim@umich.educlass EtherLink : public SimObject 484192Sktlim@umich.edu{ 494192Sktlim@umich.edu protected: 504192Sktlim@umich.edu class Interface; 514192Sktlim@umich.edu 522292SN/A /* 532907Sktlim@umich.edu * Model for a single uni-directional link 542907Sktlim@umich.edu */ 552907Sktlim@umich.edu class Link : public Serializeable { 562907Sktlim@umich.edu protected: 572907Sktlim@umich.edu Interface *txint; 582907Sktlim@umich.edu Interface *rxint; 592907Sktlim@umich.edu 602907Sktlim@umich.edu double ticks_per_byte; 612907Sktlim@umich.edu EtherDump *dump; 622907Sktlim@umich.edu 632907Sktlim@umich.edu protected: 643639Sktlim@umich.edu /* 652907Sktlim@umich.edu * Transfer is complete 662907Sktlim@umich.edu */ 672907Sktlim@umich.edu class DoneEvent : public Event 682907Sktlim@umich.edu { 692907Sktlim@umich.edu protected: 702907Sktlim@umich.edu Link *link; 713647Srdreslin@umich.edu 723647Srdreslin@umich.edu public: 733647Srdreslin@umich.edu DoneEvent(EventQueue *q, Link *l) 743647Srdreslin@umich.edu : Event(q), link(l) {} 753647Srdreslin@umich.edu virtual void process() { link->txDone(); } 762907Sktlim@umich.edu virtual const char *description() 773647Srdreslin@umich.edu { return "ethernet link completion"; } 782907Sktlim@umich.edu }; 792907Sktlim@umich.edu 802907Sktlim@umich.edu friend class DoneEvent; 812907Sktlim@umich.edu DoneEvent event; 822907Sktlim@umich.edu PacketPtr packet; 832907Sktlim@umich.edu 842907Sktlim@umich.edu void txDone(); 854986Ssaidi@eecs.umich.edu 864986Ssaidi@eecs.umich.edu public: 873310Srdreslin@umich.edu Link(const std::string &name, double rate, EtherDump *dump); 883310Srdreslin@umich.edu ~Link() {} 893310Srdreslin@umich.edu 903310Srdreslin@umich.edu bool busy() const { return (bool)packet; } 914895Sstever@eecs.umich.edu bool transmit(PacketPtr packet); 924895Sstever@eecs.umich.edu 934895Sstever@eecs.umich.edu void setTxInt(Interface *i) { assert(!txint); txint = i; } 944895Sstever@eecs.umich.edu void setRxInt(Interface *i) { assert(!rxint); rxint = i; } 953310Srdreslin@umich.edu }; 962907Sktlim@umich.edu 972907Sktlim@umich.edu /* 982907Sktlim@umich.edu * Interface at each end of the link 992907Sktlim@umich.edu */ 1002907Sktlim@umich.edu class Interface : public EtherInt 1012907Sktlim@umich.edu { 1022907Sktlim@umich.edu private: 1033014Srdreslin@umich.edu Link *txlink; 1043014Srdreslin@umich.edu 1053014Srdreslin@umich.edu public: 1063014Srdreslin@umich.edu Interface(const std::string &name, Link *txlink, Link *rxlink); 1073014Srdreslin@umich.edu bool recvPacket(PacketPtr packet) { return txlink->transmit(packet); } 1084985Sktlim@umich.edu void sendDone() { } 1092907Sktlim@umich.edu }; 1102907Sktlim@umich.edu 1112907Sktlim@umich.edu Link *link1; 1124985Sktlim@umich.edu Link *link2; 1132907Sktlim@umich.edu 1142907Sktlim@umich.edu EtherInt *int1; 1152907Sktlim@umich.edu EtherInt *int2; 1165529Snate@binkert.org 1175494Sstever@gmail.com public: 1184329Sktlim@umich.edu EtherLink(const std::string &name, EtherInt *i1, EtherInt *i2, 1194329Sktlim@umich.edu Tick speed, EtherDump *dump); 1205529Snate@binkert.org virtual ~EtherLink(); 1212907Sktlim@umich.edu}; 1222292SN/A 1233647Srdreslin@umich.edu#endif // __ETHERLINK_HH__ 1243647Srdreslin@umich.edu