etherbus.hh revision 5606
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 __ETHERBUS_H__ 36#define __ETHERBUS_H__ 37 38#include "sim/eventq.hh" 39#include "dev/etherpkt.hh" 40#include "dev/etherobject.hh" 41#include "params/EtherBus.hh" 42#include "sim/sim_object.hh" 43#include "params/EtherBus.hh" 44 45class EtherDump; 46class EtherInt; 47class EtherBus : public EtherObject 48{ 49 protected: 50 typedef std::list<EtherInt *> devlist_t; 51 devlist_t devlist; 52 double ticksPerByte; 53 bool loopback; 54 55 protected: 56 class DoneEvent : public Event 57 { 58 protected: 59 EtherBus *bus; 60 61 public: 62 DoneEvent(EtherBus *b) : bus(b) {} 63 virtual void process() { bus->txDone(); } 64 virtual const char *description() const 65 { return "ethernet bus completion"; } 66 }; 67 68 DoneEvent event; 69 EthPacketPtr packet; 70 EtherInt *sender; 71 EtherDump *dump; 72 73 public: 74 typedef EtherBusParams Params; 75 EtherBus(const Params *p); 76 virtual ~EtherBus() {} 77 78 const Params * 79 params() const 80 { 81 return dynamic_cast<const Params *>(_params); 82 } 83 84 void txDone(); 85 void reg(EtherInt *dev); 86 bool busy() const { return (bool)packet; } 87 bool send(EtherInt *sender, EthPacketPtr &packet); 88 virtual EtherInt *getEthPort(const std::string &if_name, int idx); 89}; 90 91#endif // __ETHERBUS_H__ 92