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/*
* Copyright (c) 2008 Princeton University
* Copyright (c) 2016 Georgia Institute of Technology
* 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: Niket Agarwal
* Tushar Krishna
*/
#include "mem/ruby/network/garnet2.0/NetworkLink.hh"
#include "mem/ruby/network/garnet2.0/CreditLink.hh"
NetworkLink::NetworkLink(const Params *p)
: ClockedObject(p), Consumer(this), m_id(p->link_id),
m_type(NUM_LINK_TYPES_),
m_latency(p->link_latency),
linkBuffer(new flitBuffer()), link_consumer(nullptr),
link_srcQueue(nullptr), m_link_utilized(0),
m_vc_load(p->vcs_per_vnet * p->virt_nets)
{
}
NetworkLink::~NetworkLink()
{
delete linkBuffer;
}
void
NetworkLink::setLinkConsumer(Consumer *consumer)
{
link_consumer = consumer;
}
void
NetworkLink::setSourceQueue(flitBuffer *srcQueue)
{
link_srcQueue = srcQueue;
}
void
NetworkLink::wakeup()
{
if (link_srcQueue->isReady(curCycle())) {
flit *t_flit = link_srcQueue->getTopFlit();
t_flit->set_time(curCycle() + m_latency);
linkBuffer->insert(t_flit);
link_consumer->scheduleEventAbsolute(clockEdge(m_latency));
m_link_utilized++;
m_vc_load[t_flit->get_vc()]++;
}
}
NetworkLink *
NetworkLinkParams::create()
{
return new NetworkLink(this);
}
CreditLink *
CreditLinkParams::create()
{
return new CreditLink(this);
}
uint32_t
NetworkLink::functionalWrite(Packet *pkt)
{
return linkBuffer->functionalWrite(pkt);
}
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