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/*
* Copyright (c) 2009 Princeton University, and
* Regents of the University of California
* 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: Hangsheng Wang (Orion 1.0, Princeton)
* Xinping Zhu (Orion 1.0, Princeton)
* Xuning Chen (Orion 1.0, Princeton)
* Bin Li (Orion 2.0, Princeton)
* Kambiz Samadi (Orion 2.0, UC San Diego)
*/
#ifndef __ARBITER_H__
#define __ARBITER_H__
#include "mem/ruby/network/orion/Type.hh"
class TechParameter;
class FlipFlop;
class Arbiter
{
public:
enum ArbiterModel
{
NO_MODEL = 0,
RR_ARBITER,
MATRIX_ARBITER
};
public:
Arbiter(const ArbiterModel arb_model_,
const uint32_t req_width_,
const double len_in_wire_,
const TechParameter* tech_param_ptr_);
virtual ~Arbiter() = 0;
public:
virtual double calc_dynamic_energy(double num_req_, bool is_max_) const = 0;
double get_static_power() const;
protected:
ArbiterModel m_arb_model;
uint32_t m_req_width;
double m_len_in_wire;
const TechParameter* m_tech_param_ptr;
FlipFlop* m_ff_ptr;
double m_e_chg_req;
double m_e_chg_grant;
double m_i_static;
public:
static Arbiter* create_arbiter(const string& arb_model_str_,
const string& ff_model_str_,
uint32_t req_width_,
double len_in_wire_,
const TechParameter* tech_param_ptr_);
};
#endif
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