1 | /* -*- c++ -*- |
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2 | * File : vci_traffic_generator.cpp |
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3 | * Date : 26/08/2010 |
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4 | * Copyright : UPMC / LIP6 |
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5 | * Authors : Christophe Choichillon |
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6 | * |
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7 | * SOCLIB_LGPL_HEADER_BEGIN |
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8 | * |
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9 | * This file is part of SoCLib, GNU LGPLv2.1. |
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10 | * |
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11 | * SoCLib is free software; you can redistribute it and/or modify it |
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12 | * under the terms of the GNU Lesser General Public License as published |
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13 | * by the Free Software Foundation; version 2.1 of the License. |
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14 | * |
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15 | * SoCLib is distributed in the hope that it will be useful, but |
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16 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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18 | * Lesser General Public License for more details. |
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19 | * |
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20 | * You should have received a copy of the GNU Lesser General Public |
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21 | * License along with SoCLib; if not, write to the Free Software |
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22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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23 | * 02110-1301 USA |
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24 | * |
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25 | * SOCLIB_LGPL_HEADER_END |
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26 | * |
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27 | * Maintainers: christophe.choichillon@lip6.fr |
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28 | */ |
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29 | |
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30 | #include "../include/vci_synthetic_initiator.h" |
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31 | |
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32 | |
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33 | |
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34 | namespace soclib { namespace caba { |
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35 | |
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36 | |
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37 | #define tmpl(x) template<typename vci_param> x VciSyntheticInitiator<vci_param> |
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38 | |
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39 | //using soclib::common::uint32_log2; |
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40 | |
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41 | //////////////////////////////// |
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42 | // Constructor |
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43 | //////////////////////////////// |
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44 | |
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45 | tmpl(/**/)::VciSyntheticInitiator( |
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46 | sc_module_name name, |
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47 | const soclib::common::MappingTable &mt, |
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48 | const soclib::common::IntTab &vci_index, |
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49 | const uint32_t length, // Packet length (flit numbers) |
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50 | const float rho, // Packets ratio on the network |
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51 | const uint32_t depth, // Fifo depth |
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52 | const uint32_t xmesh, |
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53 | const uint32_t ymesh, |
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54 | const uint32_t bc_period, // Broadcast period, if no broadcast => 0 |
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55 | const uint32_t xmin, |
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56 | const uint32_t xmax, |
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57 | const uint32_t ymin, |
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58 | const uint32_t ymax |
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59 | ) |
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60 | |
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61 | : soclib::caba::BaseModule(name), |
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62 | |
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63 | p_clk("clk"), |
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64 | p_resetn("resetn"), |
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65 | p_vci("vci_ini"), |
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66 | |
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67 | m_srcid( mt.indexForId(vci_index) ), |
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68 | m_coord(vci_index[1]), |
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69 | // FIFOs |
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70 | m_length(length), |
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71 | m_rho(rho), |
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72 | m_depth(depth), |
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73 | m_xmesh(xmesh), |
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74 | m_ymesh(ymesh), |
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75 | m_bc_period(bc_period), |
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76 | m_xmin(xmin), |
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77 | m_xmax(xmax), |
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78 | m_ymin(ymin), |
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79 | m_ymax(ymax), |
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80 | m_date_fifo("m_date_fifo", depth), |
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81 | r_vci_fsm("r_vci_fsm") |
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82 | { |
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83 | |
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84 | |
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85 | SC_METHOD(transition); |
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86 | dont_initialize(); |
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87 | sensitive << p_clk.pos(); |
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88 | |
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89 | SC_METHOD(genMoore); |
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90 | dont_initialize(); |
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91 | sensitive << p_clk.neg(); |
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92 | |
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93 | } // end constructor |
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94 | |
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95 | |
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96 | ///////////////////////////////// |
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97 | tmpl(/**/)::~VciSyntheticInitiator() |
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98 | ///////////////////////////////// |
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99 | { |
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100 | } |
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101 | |
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102 | /////////////////////////////////// |
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103 | tmpl(size_t)::destAdress() |
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104 | /////////////////////////////////// |
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105 | { |
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106 | size_t dest; |
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107 | do{ |
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108 | dest = (size_t) (rand() % (m_xmesh * m_ymesh)); |
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109 | } while(dest == m_srcid); |
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110 | return dest ; |
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111 | } |
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112 | |
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113 | |
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114 | /////////////////////////////////// |
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115 | // tmpl(void)::destAdress(/*size_t X_local, size_t Y_local,*/ size_t &X_dest, size_t &Y_dest) |
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116 | /////////////////////////////////// |
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117 | // { |
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118 | // size_t x_dest_calc, y_dest_calc; |
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119 | // do{ |
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120 | // x_dest_calc = (rand()%m_xmesh); |
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121 | // y_dest_calc = (rand()%m_ymesh); |
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122 | // } while((x_dest_calc = m_x) && (y_dest_calc == m_y)); |
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123 | // } |
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124 | |
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125 | ////////////////////////////////// |
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126 | tmpl(void)::transition() |
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127 | ////////////////////////////////// |
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128 | { |
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129 | // RESET |
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130 | if ( ! p_resetn.read() ) { |
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131 | // Initializing seed for random numbers generation |
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132 | srand(time(NULL)); |
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133 | |
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134 | // Initializing FSMs |
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135 | r_vci_fsm = VCI_IDLE; |
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136 | |
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137 | // Initializing FIFOs |
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138 | m_date_fifo.init(); |
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139 | |
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140 | // Activity counters |
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141 | m_cpt_cycles = 0; |
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142 | m_npackets = 0; |
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143 | |
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144 | return; |
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145 | } |
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146 | |
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147 | bool date_fifo_put = false; |
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148 | bool date_fifo_get = false; |
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149 | |
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150 | switch ( r_vci_fsm.read() ) { |
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151 | |
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152 | ////////////////// |
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153 | case VCI_IDLE: |
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154 | { |
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155 | if (m_date_fifo.rok()){ |
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156 | if (r_broadcast_req.read()){ |
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157 | r_vci_fsm = VCI_BC_SEND ; |
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158 | } else { |
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159 | r_vci_fsm = VCI_SINGLE_SEND ; |
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160 | r_address_to_send = destAdress(); |
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161 | m_count = 0; |
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162 | } |
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163 | } |
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164 | break; |
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165 | } |
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166 | ////////////////// |
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167 | case VCI_SINGLE_SEND: |
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168 | { |
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169 | if (p_vci.cmdack.read()){ |
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170 | m_count++; |
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171 | if (m_count == m_length-1) { |
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172 | m_start_latency1 = m_date_fifo.read(); |
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173 | m_start_latency2 = m_cpt_cycles; |
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174 | r_vci_fsm = VCI_SINGLE_RECEIVE ; |
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175 | } else { |
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176 | r_vci_fsm = VCI_SINGLE_SEND ; |
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177 | } |
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178 | } |
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179 | break; |
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180 | } |
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181 | ////////////////////// |
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182 | case VCI_SINGLE_RECEIVE: |
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183 | { |
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184 | if (p_vci.rspval.read()) { |
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185 | m_start_latency1 = m_date_fifo.read(); |
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186 | m_start_latency2 = m_cpt_cycles; |
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187 | m_npackets++; |
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188 | date_fifo_get = true; |
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189 | r_vci_fsm = VCI_IDLE ; |
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190 | } |
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191 | break; |
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192 | } |
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193 | /////////////////// |
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194 | case VCI_BC_SEND: |
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195 | { |
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196 | r_address_to_send = (((((((((m_xmin << 5) & m_xmax ) << 5 ) & m_ymin ) << 5 ) & m_ymax ) << 5 ) << 17 ) & 0x3) | 0 ; |
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197 | //m_address_to_send.broadcast_address.xmin = m_xmin; |
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198 | //m_address_to_send.broadcast_address.xmax = m_xmax; |
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199 | //m_address_to_send.broadcast_address.ymin = m_ymin; |
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200 | //m_address_to_send.broadcast_address.ymax = m_ymax; |
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201 | //m_address_to_send.broadcast_address.bc = 0x3; |
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202 | m_bc_nrsp = (m_xmax - m_xmin) * (m_ymax - m_ymin); |
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203 | r_vci_fsm = VCI_BC_SEND; |
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204 | break; |
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205 | } |
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206 | //////////////////// |
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207 | case VCI_BC_RECEIVE: |
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208 | { |
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209 | if (p_vci.rspval.read()){ |
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210 | if (m_bc_nrsp == 0) { |
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211 | r_broadcast_req = false; |
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212 | r_vci_fsm = VCI_IDLE ; |
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213 | } else { |
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214 | m_bc_nrsp--; |
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215 | r_vci_fsm = VCI_BC_RECEIVE ; |
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216 | } |
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217 | } |
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218 | break; |
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219 | } |
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220 | } // end switch vci_fsm |
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221 | |
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222 | |
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223 | /////////////////// Filling fifo |
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224 | if( (m_rhos < m_rho) && (rand()/RAND_MAX) ){ |
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225 | if (m_date_fifo.wok()){ |
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226 | date_fifo_put = true ; |
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227 | } |
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228 | if (!r_broadcast_req.read() && (m_cpt_cycles % m_bc_period)){ |
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229 | r_broadcast_req = true; |
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230 | } |
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231 | } |
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232 | |
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233 | if (date_fifo_put){ |
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234 | if (date_fifo_get){ |
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235 | m_date_fifo.put_and_get(m_cpt_cycles); |
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236 | } else { |
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237 | m_date_fifo.simple_put(m_cpt_cycles); |
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238 | } |
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239 | } else { |
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240 | if (date_fifo_get){ |
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241 | m_date_fifo.simple_get(); |
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242 | } |
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243 | } |
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244 | |
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245 | m_rhos = (float) ((m_npackets * m_length) / m_cpt_cycles) ; |
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246 | |
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247 | m_cpt_cycles++; |
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248 | |
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249 | return; |
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250 | |
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251 | } // end transition() |
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252 | |
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253 | ///////////////////////////// |
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254 | tmpl(void)::genMoore() |
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255 | ///////////////////////////// |
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256 | { |
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257 | //////////////////////////////////////////////////////////// |
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258 | // Command signals on the p_vci port |
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259 | //////////////////////////////////////////////////////////// |
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260 | p_vci.cmd = vci_param::CMD_WRITE; |
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261 | p_vci.be = 0xF; |
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262 | p_vci.pktid = 0; |
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263 | p_vci.srcid = m_srcid; |
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264 | p_vci.cons = false; |
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265 | p_vci.wrap = false; |
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266 | p_vci.contig = true; |
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267 | p_vci.clen = 0; |
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268 | p_vci.cfixed = false; |
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269 | |
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270 | |
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271 | switch ( r_vci_fsm.read() ) { |
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272 | |
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273 | ////////////////// |
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274 | case VCI_IDLE: |
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275 | { |
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276 | p_vci.cmdval = false; |
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277 | p_vci.address = 0; |
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278 | p_vci.plen = 0; |
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279 | p_vci.wdata = 0; |
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280 | p_vci.trdid = 0; |
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281 | p_vci.eop = false; |
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282 | p_vci.rspack = false; |
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283 | break; |
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284 | } |
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285 | ////////////////// |
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286 | case VCI_SINGLE_SEND: |
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287 | { |
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288 | p_vci.cmdval = true; |
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289 | p_vci.address = (vci_addr_t)(r_address_to_send.read() + (m_count*4)); |
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290 | p_vci.plen = m_length*4; |
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291 | p_vci.wdata = 0; |
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292 | p_vci.trdid = 0; |
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293 | if (m_count == m_length - 1 ) { |
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294 | p_vci.eop = true; |
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295 | } else { |
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296 | p_vci.eop = false; |
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297 | } |
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298 | p_vci.rspack = false; |
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299 | break; |
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300 | } |
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301 | ////////////////////// |
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302 | case VCI_SINGLE_RECEIVE: |
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303 | { |
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304 | p_vci.cmdval = false; |
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305 | p_vci.address = 0; |
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306 | p_vci.plen = 0; |
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307 | p_vci.wdata = 0; |
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308 | p_vci.trdid = 0; |
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309 | p_vci.eop = false; |
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310 | p_vci.rspack = true; |
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311 | break; |
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312 | } |
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313 | /////////////////// |
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314 | case VCI_BC_SEND: |
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315 | { |
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316 | p_vci.cmdval = true; |
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317 | p_vci.address = (vci_addr_t) r_address_to_send.read(); |
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318 | p_vci.plen = 4; |
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319 | p_vci.wdata = 0; |
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320 | p_vci.trdid = 0; |
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321 | p_vci.eop = true; |
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322 | p_vci.rspack = false; |
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323 | break; |
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324 | } |
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325 | //////////////////// |
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326 | case VCI_BC_RECEIVE: |
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327 | { |
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328 | p_vci.cmdval = false; |
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329 | p_vci.address = 0; |
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330 | p_vci.plen = 0; |
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331 | p_vci.wdata = 0; |
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332 | p_vci.trdid = 0; |
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333 | p_vci.eop = false; |
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334 | p_vci.rspack = true; |
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335 | break; |
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336 | } |
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337 | } // end switch vci_fsm |
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338 | |
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339 | } // end genMoore() |
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340 | |
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341 | }} // end name space |
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