373d70980e
and for link events --HG-- extra : convert_revision : 0054dbc4a42dd38ff8bbf64af303bc509dd5aa8a
134 lines
4 KiB
C++
134 lines
4 KiB
C++
/*
|
|
* Copyright (c) 2003 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.
|
|
*/
|
|
|
|
/* @file
|
|
* Device module for modelling a fixed bandwidth full duplex ethernet link
|
|
*/
|
|
|
|
#ifndef __ETHERLINK_HH__
|
|
#define __ETHERLINK_HH__
|
|
|
|
#include "sim/host.hh"
|
|
#include "sim/eventq.hh"
|
|
#include "dev/etherint.hh"
|
|
#include "dev/etherpkt.hh"
|
|
#include "sim/sim_object.hh"
|
|
|
|
class EtherDump;
|
|
|
|
/*
|
|
* Model for a fixed bandwidth full duplex ethernet link
|
|
*/
|
|
class EtherLink : public SimObject
|
|
{
|
|
protected:
|
|
class Interface;
|
|
|
|
/*
|
|
* Model for a single uni-directional link
|
|
*/
|
|
class Link : public Serializable {
|
|
protected:
|
|
std::string objName;
|
|
|
|
Interface *txint;
|
|
Interface *rxint;
|
|
|
|
double ticks_per_byte;
|
|
EtherDump *dump;
|
|
|
|
protected:
|
|
/*
|
|
* Transfer is complete
|
|
*/
|
|
class DoneEvent : public Event
|
|
{
|
|
protected:
|
|
Link *link;
|
|
|
|
public:
|
|
DoneEvent(EventQueue *q, Link *l)
|
|
: Event(q), link(l) {}
|
|
virtual void process() { link->txDone(); }
|
|
virtual const char *description()
|
|
{ return "ethernet link completion"; }
|
|
};
|
|
|
|
friend class DoneEvent;
|
|
DoneEvent event;
|
|
PacketPtr packet;
|
|
|
|
void txDone();
|
|
|
|
public:
|
|
Link(const std::string &name, double rate, EtherDump *dump);
|
|
~Link() {}
|
|
|
|
virtual const std::string name() const { return objName; }
|
|
|
|
bool busy() const { return (bool)packet; }
|
|
bool transmit(PacketPtr &packet);
|
|
|
|
void setTxInt(Interface *i) { assert(!txint); txint = i; }
|
|
void setRxInt(Interface *i) { assert(!rxint); rxint = i; }
|
|
|
|
virtual void serialize(std::ostream &os);
|
|
virtual void unserialize(Checkpoint *cp, const std::string §ion);
|
|
};
|
|
|
|
/*
|
|
* Interface at each end of the link
|
|
*/
|
|
class Interface : public EtherInt
|
|
{
|
|
private:
|
|
Link *txlink;
|
|
|
|
public:
|
|
Interface(const std::string &name, Link *txlink, Link *rxlink);
|
|
bool recvPacket(PacketPtr &packet) { return txlink->transmit(packet); }
|
|
void sendDone() { }
|
|
};
|
|
|
|
Link *link1;
|
|
Link *link2;
|
|
|
|
EtherInt *int1;
|
|
EtherInt *int2;
|
|
|
|
public:
|
|
EtherLink(const std::string &name, EtherInt *i1, EtherInt *i2,
|
|
Tick speed, EtherDump *dump);
|
|
virtual ~EtherLink();
|
|
|
|
virtual void serialize(std::ostream &os);
|
|
virtual void unserialize(Checkpoint *cp, const std::string §ion);
|
|
|
|
};
|
|
|
|
#endif // __ETHERLINK_HH__
|