81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2002-2005 The Regents of The University of Michigan
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* Authors: Nathan Binkert
|
|
*/
|
|
|
|
/* @file
|
|
* Device module for modelling an ethernet hub
|
|
*/
|
|
|
|
#ifndef __ETHERBUS_H__
|
|
#define __ETHERBUS_H__
|
|
|
|
#include "sim/eventq.hh"
|
|
#include "dev/etherpkt.hh"
|
|
#include "sim/sim_object.hh"
|
|
|
|
class EtherDump;
|
|
class EtherInt;
|
|
class EtherBus : public SimObject
|
|
{
|
|
protected:
|
|
typedef std::list<EtherInt *> devlist_t;
|
|
devlist_t devlist;
|
|
double ticksPerByte;
|
|
bool loopback;
|
|
|
|
protected:
|
|
class DoneEvent : public Event
|
|
{
|
|
protected:
|
|
EtherBus *bus;
|
|
|
|
public:
|
|
DoneEvent(EventQueue *q, EtherBus *b)
|
|
: Event(q), bus(b) {}
|
|
virtual void process() { bus->txDone(); }
|
|
virtual const char *description() { return "ethernet bus completion"; }
|
|
};
|
|
|
|
DoneEvent event;
|
|
EthPacketPtr packet;
|
|
EtherInt *sender;
|
|
EtherDump *dump;
|
|
|
|
public:
|
|
EtherBus(const std::string &name, double speed, bool loopback,
|
|
EtherDump *dump);
|
|
virtual ~EtherBus() {}
|
|
|
|
void txDone();
|
|
void reg(EtherInt *dev);
|
|
bool busy() const { return (bool)packet; }
|
|
bool send(EtherInt *sender, EthPacketPtr &packet);
|
|
};
|
|
|
|
#endif // __ETHERBUS_H__
|