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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 __CROSSBAR_H__
#define __CROSSBAR_H__
#include "mem/ruby/network/orion/Type.hh"
class TechParameter;
class OrionConfig;
class Crossbar
{
public:
enum CrossbarModel
{
NO_MODEL = 0,
MATRIX_CROSSBAR,
MULTREE_CROSSBAR
};
enum ConnectType
{
TRANS_GATE,
TRISTATE_GATE
};
enum TransType
{
N_GATE,
NP_GATE
};
public:
Crossbar(
CrossbarModel xbar_model_,
const string& conn_type_str_,
const string& trans_type_str_,
uint32_t num_in_,
uint32_t num_out_,
uint32_t data_width_,
uint32_t num_in_seg_,
uint32_t num_out_seg_,
uint32_t degree_,
const TechParameter* tech_param_ptr_
);
virtual ~Crossbar() = 0;
public:
double get_len_req_wire() const { return m_len_req_wire; }
virtual double get_dynamic_energy(bool is_max_) const = 0;
double get_static_power() const;
void print_all() const;
protected:
void set_conn_type(const string& conn_type_str_);
void set_trans_type(const string& trans_type_str_);
double calc_in_cap();
double calc_out_cap(uint32_t num_in_);
double calc_int_cap();
double calc_ctr_cap(double cap_wire_, bool prev_ctr_, bool next_ctr_);
virtual double calc_i_static() = 0;
protected:
CrossbarModel m_xbar_model;
ConnectType m_conn_type;
TransType m_trans_type;
uint32_t m_num_in;
uint32_t m_num_out;
uint32_t m_data_width;
uint32_t m_num_in_seg;
uint32_t m_num_out_seg;
uint32_t m_degree;
const TechParameter* m_tech_param_ptr;
double m_cap_in_wire;
double m_cap_out_wire;
double m_cap_ctr_wire;
double m_len_req_wire;
double m_e_chg_in;
double m_e_chg_out;
double m_e_chg_ctr;
double m_e_chg_int;
double m_i_static;
public:
static Crossbar* create_crossbar(
const string& xbar_model_str_,
uint32_t num_in_,
uint32_t num_out_,
uint32_t data_width_,
const OrionConfig* orion_cfg_ptr_
);
};
#endif
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