NetworkLink.hh

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/*
 * Copyright (c) 2020 Inria
 * Copyright (c) 2016 Georgia Institute of Technology
 * Copyright (c) 2008 Princeton University
 * All rights reserved.
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#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() = default;

    void setLinkConsumer(Consumer *consumer);
    void setSourceQueue(flitBuffer *src_queue);
    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__