/*
 * Copyright (c) 2008 Princeton University
 * 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
 */

#ifndef __MEM_RUBY_NETWORK_GARNET_FIXED_PIPELINE_ROUTING_UNIT_D_HH__
#define __MEM_RUBY_NETWORK_GARNET_FIXED_PIPELINE_ROUTING_UNIT_D_HH__

#include "mem/ruby/common/Consumer.hh"
#include "mem/ruby/common/NetDest.hh"
#include "mem/ruby/network/garnet/fixed-pipeline/flit_d.hh"
#include "mem/ruby/network/garnet/NetworkHeader.hh"

class InputUnit_d;
class Router_d;

class RoutingUnit_d
{
  public:
    RoutingUnit_d(Router_d *router);
    void addRoute(const NetDest& routing_table_entry);
    int routeCompute(flit_d *t_flit);
    void addWeight(int link_weight);
    void RC_stage(flit_d *t_flit, InputUnit_d *in_unit, int invc);

  private:
    Router_d *m_router;
    std::vector<NetDest> m_routing_table;
    std::vector<int> m_weight_table;
};

#endif // __MEM_RUBY_NETWORK_GARNET_FIXED_PIPELINE_ROUTING_UNIT_D_HH__