etherbus.cc revision 13766:4ecebdee8da4
15625Sgblack@eecs.umich.edu/* 25625Sgblack@eecs.umich.edu * Copyright (c) 2002-2005 The Regents of The University of Michigan 35625Sgblack@eecs.umich.edu * All rights reserved. 45625Sgblack@eecs.umich.edu * 57087Snate@binkert.org * Redistribution and use in source and binary forms, with or without 67087Snate@binkert.org * modification, are permitted provided that the following conditions are 77087Snate@binkert.org * met: redistributions of source code must retain the above copyright 87087Snate@binkert.org * notice, this list of conditions and the following disclaimer; 97087Snate@binkert.org * redistributions in binary form must reproduce the above copyright 107087Snate@binkert.org * notice, this list of conditions and the following disclaimer in the 117087Snate@binkert.org * documentation and/or other materials provided with the distribution; 127087Snate@binkert.org * neither the name of the copyright holders nor the names of its 135625Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 147087Snate@binkert.org * this software without specific prior written permission. 157087Snate@binkert.org * 167087Snate@binkert.org * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 177087Snate@binkert.org * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 187087Snate@binkert.org * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 197087Snate@binkert.org * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 207087Snate@binkert.org * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 217087Snate@binkert.org * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 225625Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 237087Snate@binkert.org * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245625Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255625Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 265625Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275625Sgblack@eecs.umich.edu * 285625Sgblack@eecs.umich.edu * Authors: Nathan Binkert 295625Sgblack@eecs.umich.edu */ 305625Sgblack@eecs.umich.edu 315625Sgblack@eecs.umich.edu/* @file 325625Sgblack@eecs.umich.edu * Device module for modelling an ethernet hub 335625Sgblack@eecs.umich.edu */ 345625Sgblack@eecs.umich.edu#include "dev/net/etherbus.hh" 355625Sgblack@eecs.umich.edu 365625Sgblack@eecs.umich.edu#include <cmath> 375625Sgblack@eecs.umich.edu#include <deque> 385625Sgblack@eecs.umich.edu#include <string> 395625Sgblack@eecs.umich.edu#include <vector> 405625Sgblack@eecs.umich.edu 415625Sgblack@eecs.umich.edu#include "base/logging.hh" 425625Sgblack@eecs.umich.edu#include "base/trace.hh" 436216Snate@binkert.org#include "debug/Ethernet.hh" 448706Sandreas.hansson@arm.com#include "debug/EthernetData.hh" 455625Sgblack@eecs.umich.edu#include "dev/net/etherdump.hh" 465625Sgblack@eecs.umich.edu#include "dev/net/etherint.hh" 475625Sgblack@eecs.umich.edu#include "dev/net/etherpkt.hh" 485625Sgblack@eecs.umich.edu#include "params/EtherBus.hh" 495625Sgblack@eecs.umich.edu#include "sim/core.hh" 505625Sgblack@eecs.umich.edu 515625Sgblack@eecs.umich.eduusing namespace std; 525625Sgblack@eecs.umich.edu 535625Sgblack@eecs.umich.eduEtherBus::EtherBus(const Params *p) 545625Sgblack@eecs.umich.edu : SimObject(p), ticksPerByte(p->speed), loopback(p->loopback), 555625Sgblack@eecs.umich.edu event([this]{ txDone(); }, "ethernet bus completion"), 565625Sgblack@eecs.umich.edu sender(0), dump(p->dump) 575625Sgblack@eecs.umich.edu{ 585625Sgblack@eecs.umich.edu} 595625Sgblack@eecs.umich.edu 605625Sgblack@eecs.umich.eduvoid 615625Sgblack@eecs.umich.eduEtherBus::txDone() 625625Sgblack@eecs.umich.edu{ 635625Sgblack@eecs.umich.edu devlist_t::iterator i = devlist.begin(); 645625Sgblack@eecs.umich.edu devlist_t::iterator end = devlist.end(); 655625Sgblack@eecs.umich.edu 665625Sgblack@eecs.umich.edu DPRINTF(Ethernet, "ethernet packet received: length=%d\n", packet->length); 675625Sgblack@eecs.umich.edu DDUMP(EthernetData, packet->data, packet->length); 685625Sgblack@eecs.umich.edu 695625Sgblack@eecs.umich.edu while (i != end) { 705625Sgblack@eecs.umich.edu if (loopback || *i != sender) 715625Sgblack@eecs.umich.edu (*i)->sendPacket(packet); 725625Sgblack@eecs.umich.edu ++i; 738852Sandreas.hansson@arm.com } 745625Sgblack@eecs.umich.edu 758737Skoansin.tan@gmail.com sender->sendDone(); 768852Sandreas.hansson@arm.com 775625Sgblack@eecs.umich.edu if (dump) 785625Sgblack@eecs.umich.edu dump->dump(packet); 795625Sgblack@eecs.umich.edu 805625Sgblack@eecs.umich.edu sender = 0; 815625Sgblack@eecs.umich.edu packet = 0; 825625Sgblack@eecs.umich.edu} 835625Sgblack@eecs.umich.edu 845625Sgblack@eecs.umich.eduEtherInt* 855625Sgblack@eecs.umich.eduEtherBus::getEthPort(const std::string &if_name, int idx) 865625Sgblack@eecs.umich.edu{ 878852Sandreas.hansson@arm.com panic("Etherbus doesn't work\n"); 885625Sgblack@eecs.umich.edu} 895625Sgblack@eecs.umich.edu 905625Sgblack@eecs.umich.edubool 915625Sgblack@eecs.umich.eduEtherBus::send(EtherInt *sndr, EthPacketPtr &pkt) 925625Sgblack@eecs.umich.edu{ 935625Sgblack@eecs.umich.edu if (busy()) { 945625Sgblack@eecs.umich.edu DPRINTF(Ethernet, "ethernet packet not sent, bus busy\n", curTick()); 9510292SAndreas.Sandberg@ARM.com return false; 965625Sgblack@eecs.umich.edu } 975625Sgblack@eecs.umich.edu 985625Sgblack@eecs.umich.edu DPRINTF(Ethernet, "ethernet packet sent: length=%d\n", pkt->length); 995625Sgblack@eecs.umich.edu DDUMP(EthernetData, pkt->data, pkt->length); 1008852Sandreas.hansson@arm.com 1015625Sgblack@eecs.umich.edu packet = pkt; 1025625Sgblack@eecs.umich.edu sender = sndr; 1035625Sgblack@eecs.umich.edu int delay = (int)ceil(((double)pkt->simLength * ticksPerByte) + 1.0); 1045625Sgblack@eecs.umich.edu DPRINTF(Ethernet, "scheduling packet: delay=%d, (rate=%f)\n", 1055625Sgblack@eecs.umich.edu delay, ticksPerByte); 1065625Sgblack@eecs.umich.edu schedule(event, curTick() + delay); 1075625Sgblack@eecs.umich.edu 1085625Sgblack@eecs.umich.edu return true; 1095625Sgblack@eecs.umich.edu} 1108852Sandreas.hansson@arm.com 1115625Sgblack@eecs.umich.eduEtherBus * 1125625Sgblack@eecs.umich.eduEtherBusParams::create() 1135625Sgblack@eecs.umich.edu{ 1145625Sgblack@eecs.umich.edu return new EtherBus(this); 1155625Sgblack@eecs.umich.edu} 1165625Sgblack@eecs.umich.edu