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-/*
- * 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_VC_ALLOCATOR_D_HH__
-#define __MEM_RUBY_NETWORK_GARNET_FIXED_PIPELINE_VC_ALLOCATOR_D_HH__
-
-#include <iostream>
-#include <utility>
-#include <vector>
-
-#include "mem/ruby/common/Consumer.hh"
-#include "mem/ruby/network/garnet/NetworkHeader.hh"
-
-class Router_d;
-class InputUnit_d;
-class OutputUnit_d;
-
-class VCallocator_d : public Consumer
-{
- public:
- VCallocator_d(Router_d *router);
- void init();
- void wakeup();
- void check_for_wakeup();
- void clear_request_vector();
- int get_vnet(int invc);
- void print(std::ostream& out) const {}
- void arbitrate_invcs();
- void arbitrate_outvcs();
- bool is_invc_candidate(int inport_iter, int invc_iter);
- void select_outvc(int inport_iter, int invc_iter);
-
- double get_local_arbit_count(unsigned int vnet) const
- { return m_local_arbiter_activity[vnet]; }
-
- double get_global_arbit_count(unsigned int vnet) const
- { return m_global_arbiter_activity[vnet]; }
-
- private:
- int m_num_vcs, m_vc_per_vnet;
- int m_num_inports;
- int m_num_outports;
-
- Router_d *m_router;
-
- // First stage of arbitration
- // where all vcs select an output vc to contend for
- std::vector<std::vector<int> > m_round_robin_invc;
-
- // Arbiter for every output vc
- std::vector<std::vector<std::pair<int, int> > > m_round_robin_outvc;
-
- // [outport][outvc][inport][invc]
- // set true in the first phase of allocation
- std::vector<std::vector<std::vector<std::vector<bool> > > > m_outvc_req;
-
- std::vector<std::vector<bool> > m_outvc_is_req;
-
- std::vector<InputUnit_d *> m_input_unit;
- std::vector<OutputUnit_d *> m_output_unit;
-
- // Statistical variables
- std::vector<double> m_local_arbiter_activity;
- std::vector<double> m_global_arbiter_activity;
-};
-
-#endif // __MEM_RUBY_NETWORK_GARNET_FIXED_PIPELINE_VC_ALLOCATOR_D_HH__