| /* |
| * Copyright (c) 2009 Princeton University |
| * Copyright (c) 2009 The 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) |
| */ |
| |
| #include <cassert> |
| #include <cmath> |
| #include <iostream> |
| |
| #include "mem/ruby/network/orion/Buffer/AmpUnit.hh" |
| #include "mem/ruby/network/orion/Buffer/BitlineUnit.hh" |
| #include "mem/ruby/network/orion/Buffer/DecoderUnit.hh" |
| #include "mem/ruby/network/orion/Buffer/MemUnit.hh" |
| #include "mem/ruby/network/orion/Buffer/OutdrvUnit.hh" |
| #include "mem/ruby/network/orion/Buffer/PrechargeUnit.hh" |
| #include "mem/ruby/network/orion/Buffer/SRAM.hh" |
| #include "mem/ruby/network/orion/Buffer/WordlineUnit.hh" |
| |
| using namespace std; |
| |
| SRAM::SRAM( |
| uint32_t num_entry_, |
| uint32_t line_width_, |
| bool is_fifo_, |
| bool is_outdrv_, |
| uint32_t num_read_port_, |
| uint32_t num_write_port_, |
| uint32_t num_data_end_, |
| const string& rowdec_model_str_, |
| const string& wl_model_str_, |
| const string& bl_pre_model_str_, |
| const string& mem_model_str_, |
| const string& bl_model_str_, |
| const string& amp_model_str_, |
| const string& outdrv_model_str_, |
| const TechParameter* tech_param_ptr_ |
| ) |
| { |
| assert(num_entry_ == num_entry_); |
| assert(line_width_ == line_width_); |
| assert(num_read_port_ == num_read_port_); |
| assert(num_write_port_ == num_write_port_); |
| assert(num_data_end_ == num_data_end_); |
| |
| m_num_entry = num_entry_; |
| m_line_width = line_width_; |
| m_is_fifo = is_fifo_; |
| m_is_outdrv = is_outdrv_; |
| |
| m_num_read_port = num_read_port_; |
| m_num_write_port = num_write_port_; |
| m_num_data_end = num_data_end_; |
| |
| m_rowdec_model_str = rowdec_model_str_; |
| m_wl_model_str = wl_model_str_; |
| m_bl_pre_model_str = bl_pre_model_str_; |
| m_mem_model_str = mem_model_str_; |
| m_bl_model_str = bl_model_str_; |
| m_amp_model_str = amp_model_str_; |
| m_outdrv_model_str = outdrv_model_str_; |
| m_tech_param_ptr = tech_param_ptr_; |
| |
| init(); |
| } |
| |
| SRAM::~SRAM() |
| { |
| delete m_outdrv_unit_ptr; |
| delete m_amp_unit_ptr; |
| delete m_bl_unit_ptr; |
| delete m_mem_unit_ptr; |
| delete m_bl_pre_unit_ptr; |
| delete m_wl_unit_ptr; |
| delete m_rowdec_unit_ptr; |
| } |
| |
| double SRAM::calc_e_read( |
| bool is_max_ |
| ) const |
| { |
| double e_atomic; |
| double e_read = 0; |
| |
| // decoder |
| if (m_rowdec_unit_ptr != NULL) |
| { |
| e_atomic = m_rowdec_unit_ptr->get_e_chg_addr()*m_rowdec_unit_ptr->get_dec_width()*(is_max_? 1:0.5); |
| e_atomic += m_rowdec_unit_ptr->get_e_chg_output(); |
| // assume all 1st-level decoders change output |
| e_atomic += m_rowdec_unit_ptr->get_e_chg_l1()*m_rowdec_unit_ptr->get_num_in_2nd(); |
| e_read += e_atomic; |
| } |
| |
| //wordline |
| e_atomic = m_wl_unit_ptr->get_e_read(); |
| e_read += e_atomic; |
| |
| //bitline pre |
| e_atomic = m_bl_pre_unit_ptr->get_e_charge_gate()*m_line_width; |
| if (m_num_data_end == 2) |
| { |
| e_atomic += m_bl_pre_unit_ptr->get_e_charge_drain()*m_line_width; |
| } |
| else |
| { |
| e_atomic += m_bl_pre_unit_ptr->get_e_charge_drain()*m_line_width*(is_max_? 1:0.5); |
| } |
| e_read += e_atomic; |
| |
| //bitline |
| if (m_num_data_end == 2) |
| { |
| e_atomic = m_bl_unit_ptr->get_e_col_read()*m_line_width; |
| } |
| else |
| { |
| e_atomic = m_bl_unit_ptr->get_e_col_read()*m_line_width*(is_max_? 1:0.5); |
| } |
| e_read += e_atomic; |
| |
| if (m_num_data_end == 2) |
| { |
| e_atomic = m_amp_unit_ptr->get_e_access()*m_line_width; |
| e_read += e_atomic; |
| } |
| |
| if (m_outdrv_unit_ptr != NULL) |
| { |
| e_atomic = m_outdrv_unit_ptr->get_e_select(); |
| |
| e_atomic += m_outdrv_unit_ptr->get_e_chg_data()*m_line_width*(is_max_? 1:0.5); |
| |
| //assume 1 and 0 are uniformly distributed |
| if ((m_outdrv_unit_ptr->get_e_out_1() >= m_outdrv_unit_ptr->get_e_out_0()) || (!is_max_)) |
| { |
| e_atomic += m_outdrv_unit_ptr->get_e_out_1()*m_line_width*(is_max_? 1:0.5); |
| } |
| if ((m_outdrv_unit_ptr->get_e_out_1() < m_outdrv_unit_ptr->get_e_out_0()) || (!is_max_)) |
| { |
| e_atomic += m_outdrv_unit_ptr->get_e_out_0()*m_line_width*(is_max_? 1:0.5); |
| } |
| |
| e_read += e_atomic; |
| } |
| |
| return e_read; |
| } |
| |
| double SRAM::calc_e_write( |
| bool is_max_ |
| ) const |
| { |
| double e_atomic; |
| double e_write = 0; |
| |
| // decoder |
| if (m_rowdec_unit_ptr != NULL) |
| { |
| e_atomic = m_rowdec_unit_ptr->get_e_chg_addr()*m_rowdec_unit_ptr->get_dec_width()*(is_max_? 1:0.5); |
| e_atomic += m_rowdec_unit_ptr->get_e_chg_output(); |
| // assume all 1st-level decoders change output |
| e_atomic += m_rowdec_unit_ptr->get_e_chg_l1()*m_rowdec_unit_ptr->get_num_in_2nd(); |
| e_write += e_atomic; |
| } |
| |
| //wordline |
| e_atomic = m_wl_unit_ptr->get_e_write(); |
| e_write += e_atomic; |
| |
| //bitline |
| e_atomic = m_bl_unit_ptr->get_e_col_wrtie()*m_line_width*(is_max_? 1:0.5); |
| e_write += e_atomic; |
| |
| //mem cell |
| e_atomic = m_mem_unit_ptr->get_e_switch()*m_line_width*(is_max_? 1:0.5); |
| e_write += e_atomic; |
| |
| return e_write; |
| } |
| |
| double SRAM::calc_i_static() const |
| { |
| double i_static = 0; |
| |
| i_static += m_bl_unit_ptr->get_i_static()*m_line_width*m_num_write_port; |
| i_static += m_mem_unit_ptr->get_i_static()*m_num_entry*m_line_width; |
| i_static += m_bl_pre_unit_ptr->get_i_static()*m_line_width*m_num_read_port; |
| i_static += m_wl_unit_ptr->get_i_static()*m_num_entry*(m_num_read_port+m_num_write_port); |
| |
| return i_static; |
| } |
| |
| void SRAM::init() |
| { |
| // output driver unit |
| if (m_is_outdrv) |
| { |
| m_outdrv_unit_ptr = new OutdrvUnit(m_outdrv_model_str, this, m_tech_param_ptr); |
| } |
| else |
| { |
| m_outdrv_unit_ptr = NULL; |
| } |
| |
| // sense amplifier unit |
| if (m_num_data_end == 2) |
| { |
| m_amp_unit_ptr = new AmpUnit(m_amp_model_str, m_tech_param_ptr); |
| } |
| else |
| { |
| m_amp_unit_ptr = NULL; |
| } |
| |
| // bitline unit |
| m_bl_unit_ptr = new BitlineUnit(m_bl_model_str, this, m_tech_param_ptr); |
| |
| // mem unit |
| m_mem_unit_ptr = new MemUnit(m_mem_model_str, this, m_tech_param_ptr); |
| |
| // precharge unit |
| double bl_pre_unit_load = m_bl_unit_ptr->get_pre_unit_load(); |
| m_bl_pre_unit_ptr = new PrechargeUnit(m_bl_pre_model_str, bl_pre_unit_load, this, m_tech_param_ptr); |
| |
| // wordline unit |
| m_wl_unit_ptr = new WordlineUnit(m_wl_model_str, this, m_tech_param_ptr); |
| |
| // decode unit |
| if (!m_is_fifo) |
| { |
| m_rowdec_width = (uint32_t)log2((double)m_num_entry); |
| m_rowdec_unit_ptr = new DecoderUnit(m_rowdec_model_str, m_rowdec_width, m_tech_param_ptr); |
| } |
| else |
| { |
| m_rowdec_unit_ptr = NULL; |
| } |
| return; |
| } |
| |
| |