SwitchAllocator.hh

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/*
 * Copyright (c) 2020 Inria
 * Copyright (c) 2016 Georgia Institute of Technology
 * Copyright (c) 2008 Princeton University
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#ifndef __MEM_RUBY_NETWORK_GARNET2_0_SWITCHALLOCATOR_HH__
#define __MEM_RUBY_NETWORK_GARNET2_0_SWITCHALLOCATOR_HH__

#include <iostream>
#include <vector>

#include "mem/ruby/common/Consumer.hh"
#include "mem/ruby/network/garnet2.0/CommonTypes.hh"

class Router;
class InputUnit;
class OutputUnit;

class SwitchAllocator : public Consumer
{
  public:
    SwitchAllocator(Router *router);
    void wakeup();
    void init();
    void clear_request_vector();
    void check_for_wakeup();
    int get_vnet (int invc);
    void print(std::ostream& out) const {};
    void arbitrate_inports();
    void arbitrate_outports();
    bool send_allowed(int inport, int invc, int outport, int outvc);
    int vc_allocate(int outport, int inport, int invc);

    inline double
    get_input_arbiter_activity()
    {
        return m_input_arbiter_activity;
    }
    inline double
    get_output_arbiter_activity()
    {
        return m_output_arbiter_activity;
    }

    void resetStats();

  private:
    int m_num_inports, m_num_outports;
    int m_num_vcs, m_vc_per_vnet;

    double m_input_arbiter_activity, m_output_arbiter_activity;

    Router *m_router;
    std::vector<int> m_round_robin_invc;
    std::vector<int> m_round_robin_inport;
    std::vector<std::vector<bool>> m_port_requests;
    std::vector<std::vector<int>> m_vc_winners; // a list for each outport
};

#endif // __MEM_RUBY_NETWORK_GARNET2_0_SWITCHALLOCATOR_HH__