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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
*/
#ifndef __MEM_RUBY_NETWORK_GARNET2_0_NETWORKLINK_HH__
#define __MEM_RUBY_NETWORK_GARNET2_0_NETWORKLINK_HH__
#include <iostream>
#include <vector>
#include "mem/ruby/common/Consumer.hh"
#include "mem/ruby/network/garnet2.0/CommonTypes.hh"
#include "mem/ruby/network/garnet2.0/flitBuffer.hh"
#include "params/NetworkLink.hh"
#include "sim/clocked_object.hh"
class GarnetNetwork;
class NetworkLink : public ClockedObject, public Consumer
{
public:
typedef NetworkLinkParams Params;
NetworkLink(const Params *p);
~NetworkLink();
void setLinkConsumer(Consumer *consumer);
void setSourceQueue(flitBuffer *srcQueue);
void setType(link_type type) { m_type = type; }
link_type getType() { return m_type; }
void print(std::ostream& out) const {}
int get_id() const { return m_id; }
void wakeup();
unsigned int getLinkUtilization() const { return m_link_utilized; }
const std::vector<unsigned int> & getVcLoad() const { return m_vc_load; }
inline bool isReady(Cycles curTime)
{ return linkBuffer->isReady(curTime); }
inline flit* peekLink() { return linkBuffer->peekTopFlit(); }
inline flit* consumeLink() { return linkBuffer->getTopFlit(); }
uint32_t functionalWrite(Packet *);
void resetStats();
private:
const int m_id;
link_type m_type;
const Cycles m_latency;
flitBuffer *linkBuffer;
Consumer *link_consumer;
flitBuffer *link_srcQueue;
// Statistical variables
unsigned int m_link_utilized;
std::vector<unsigned int> m_vc_load;
};
#endif // __MEM_RUBY_NETWORK_GARNET2_0_NETWORKLINK_HH__
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