1 | #ifdef VHDL |
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2 | /* |
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3 | * $Id: Victim_Pseudo_LRU_vhdl_body.cpp 95 2008-12-16 16:24:26Z rosiere $ |
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4 | * |
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5 | * [ Description ] |
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6 | * |
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7 | */ |
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8 | |
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9 | #include "Behavioural/Generic/Victim/Victim_Pseudo_LRU/include/Victim_Pseudo_LRU.h" |
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10 | |
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11 | namespace morpheo { |
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12 | namespace behavioural { |
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13 | namespace generic { |
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14 | namespace victim { |
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15 | namespace victim_pseudo_lru { |
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16 | |
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17 | void Victim_Pseudo_LRU::vhdl_body (Vhdl * & vhdl) |
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18 | { |
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19 | vhdl->set_body (""); |
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20 | vhdl->set_body ("-----------------------------------------------------------------------------"); |
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21 | vhdl->set_body ("-- Access"); |
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22 | vhdl->set_body ("-----------------------------------------------------------------------------"); |
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23 | vhdl->set_body (""); |
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24 | vhdl->set_body ("-- Tree of Pseudo-LRU - example to 8 entity"); |
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25 | vhdl->set_body ("--"); |
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26 | vhdl->set_body ("-- 4-5-6-7? "); |
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27 | vhdl->set_body ("-- 0_______|_______1 "); |
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28 | vhdl->set_body ("-- | | "); |
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29 | vhdl->set_body ("-- 2-3? 6-7? "); |
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30 | vhdl->set_body ("-- 0___|___1 0___|___1 "); |
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31 | vhdl->set_body ("-- | | | | "); |
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32 | vhdl->set_body ("-- 1? 3? 5? 7? "); |
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33 | vhdl->set_body ("-- 0_|_1 0_|_1 0_|_1 0_|_1 "); |
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34 | vhdl->set_body ("-- | | | | | | | | "); |
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35 | vhdl->set_body ("-- Way Way Way Way Way Way Way Way "); |
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36 | vhdl->set_body ("-- 0 1 2 3 4 5 6 7 "); |
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37 | for (uint32_t i=0; i<_param->_nb_access; i++) |
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38 | { |
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39 | vhdl->set_body (""); |
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40 | // Read the table |
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41 | |
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42 | std::string access_address; |
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43 | |
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44 | if (_param->_size_table>1) |
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45 | access_address = "conv_integer(in_ACCESS_"+toString(i)+"_ADDRESS)"; |
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46 | else |
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47 | access_address = "0"; |
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48 | |
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49 | vhdl->set_body ("access_entry_"+toString(i)+" <= reg_TABLE ("+access_address+");"); |
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50 | vhdl->set_body (""); |
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51 | |
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52 | for (int32_t j=static_cast<uint32_t>(log2(_param->_nb_entity)-1); j>=0; j--) |
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53 | { |
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54 | vhdl->set_body ("access_entity_"+toString(i)+"("+toString(j)+") <= "); |
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55 | |
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56 | uint32_t cpt=0; |
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57 | |
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58 | for (int32_t k=(1<<j)-1; k<static_cast<int32_t>(_param->_nb_entity-1); k+=(1<<(j+1))) |
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59 | { |
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60 | std::string cond = ""; |
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61 | |
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62 | // Create the condition |
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63 | for (uint32_t l=j+1; l<static_cast<uint32_t>(log2(_param->_nb_entity));l++) |
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64 | { |
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65 | if (l==static_cast<uint32_t>(j+1)) |
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66 | cond += "when"; |
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67 | else |
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68 | cond += " and"; |
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69 | cond += " access_entity_"+toString(i)+"("+toString(l)+") = '"+toString((cpt>>(l-(j+1)))&1)+"'"; |
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70 | } |
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71 | |
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72 | std::string print_else = (k==(1<<j)-1)?" ":"else "; |
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73 | |
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74 | vhdl->set_body ("\t"+print_else+"access_entry_"+toString(i)+"("+toString(k)+") "+cond); |
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75 | cpt ++; |
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76 | } |
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77 | vhdl->set_body ("\t;"); |
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78 | } |
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79 | } |
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80 | |
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81 | vhdl->set_body (""); |
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82 | vhdl->set_body ("-----------------------------------------------------------------------------"); |
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83 | vhdl->set_body ("-- Update"); |
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84 | vhdl->set_body ("-----------------------------------------------------------------------------"); |
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85 | vhdl->set_body (""); |
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86 | vhdl->set_body ("-- port access"); |
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87 | for (uint32_t i=0; i<_param->_nb_access; i++) |
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88 | for (int32_t j=static_cast<uint32_t>(log2(_param->_nb_entity)-1); j>=0; j--) |
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89 | { |
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90 | uint32_t cpt=0; |
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91 | |
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92 | for (int32_t k=(1<<j)-1; k<static_cast<int32_t>(_param->_nb_entity-1); k+=(1<<(j+1))) |
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93 | { |
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94 | bool have_cond = false; |
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95 | std::string cond = ""; |
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96 | |
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97 | // condition to change the bit |
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98 | for (uint32_t l=j+1; l<static_cast<uint32_t>(log2(_param->_nb_entity));l++) |
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99 | { |
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100 | have_cond = true; |
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101 | |
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102 | if (l==static_cast<uint32_t>(j+1)) |
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103 | cond += "when"; |
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104 | else |
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105 | cond += " and"; |
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106 | cond += " access_entity_"+toString(i)+"("+toString(l)+")='"+toString((cpt>>(l-(j+1)))&1)+"'"; |
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107 | } |
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108 | |
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109 | vhdl->set_body ("access_next_entry_"+toString(i)+"("+toString(k)+") <="); |
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110 | vhdl->set_body ("\tnot access_entity_"+toString(i)+"("+toString(j)+") "+cond); |
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111 | if (have_cond == true) |
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112 | vhdl->set_body ("\telse access_entry_"+toString(i)+"("+toString(k)+")"); |
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113 | vhdl->set_body ("\t;"); |
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114 | cpt ++; |
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115 | } |
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116 | } |
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117 | |
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118 | // vhdl->set_body (""); |
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119 | // vhdl->set_body ("-- port update"); |
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120 | // for (uint32_t i=0; i<_param->_nb_update; i++) |
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121 | // for (int32_t j=static_cast<uint32_t>(log2(_param->_nb_entity)-1); j>=0; j--) |
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122 | // { |
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123 | // uint32_t cpt=0; |
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124 | |
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125 | // for (int32_t k=(1<<j)-1; k<static_cast<int32_t>(_param->_nb_entity-1); k+=(1<<(j+1))) |
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126 | // { |
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127 | // bool have_cond = false; |
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128 | // std::string cond = ""; |
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129 | |
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130 | // // condition to change the bit |
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131 | // for (uint32_t l=j+1; l<static_cast<uint32_t>(log2(_param->_nb_entity));l++) |
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132 | // { |
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133 | // have_cond = true; |
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134 | |
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135 | // if (l==static_cast<uint32_t>(j+1)) |
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136 | // cond += "when"; |
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137 | // else |
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138 | // cond += " and"; |
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139 | // cond += " in_UPDATE_"+toString(i)+"_ENTITY("+toString(l)+")='"+toString((cpt>>(l-(j+1)))&1)+"'"; |
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140 | // } |
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141 | |
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142 | // vhdl->set_body ("update_next_entry_"+toString(i)+"("+toString(k)+") <="); |
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143 | // vhdl->set_body ("\tnot in_UPDATE_"+toString(i)+"_ENTITY("+toString(j)+") "+cond); |
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144 | // if (have_cond == true) |
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145 | // { |
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146 | // std::string update_address; |
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147 | |
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148 | // if (_param->_size_table>1) |
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149 | // update_address = "conv_integer(in_UPDATE_"+toString(i)+"_ADDRESS)"; |
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150 | // else |
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151 | // update_address = "0"; |
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152 | |
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153 | // vhdl->set_body ("\telse reg_TABLE ("+update_address+")("+toString(k)+")"); |
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154 | // } |
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155 | // vhdl->set_body ("\t;"); |
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156 | // cpt ++; |
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157 | // } |
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158 | // } |
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159 | |
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160 | vhdl->set_body (""); |
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161 | vhdl->set_body ("-----------------------------------------------------------------------------"); |
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162 | vhdl->set_body ("-- Transition"); |
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163 | vhdl->set_body ("-----------------------------------------------------------------------------"); |
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164 | vhdl->set_body (""); |
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165 | |
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166 | vhdl->set_body ("reg_TABLE_write: process (in_CLOCK)"); |
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167 | vhdl->set_body ("begin"); |
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168 | vhdl->set_body ("\tif in_CLOCK'event and in_CLOCK = '1' then"); |
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169 | vhdl->set_body ("\t\t-- Access port"); |
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170 | for (uint32_t i=0; i<_param->_nb_access; i++) |
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171 | { |
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172 | std::string access_address; |
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173 | |
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174 | if (_param->_size_table>1) |
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175 | access_address = "conv_integer(in_ACCESS_"+toString(i)+"_ADDRESS)"; |
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176 | else |
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177 | access_address = "0"; |
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178 | |
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179 | vhdl->set_body ("\t\tif (in_ACCESS_"+toString(i)+"_VAL = '1') then"); |
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180 | vhdl->set_body ("\t\t\treg_TABLE ("+access_address+") <= access_next_entry_"+toString(i)+";"); |
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181 | vhdl->set_body ("\t\tend if;"); |
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182 | } |
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183 | |
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184 | // vhdl->set_body ("\t\t-- Update port"); |
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185 | // for (uint32_t i=0; i<_param->_nb_update; i++) |
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186 | // { |
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187 | // std::string update_address; |
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188 | |
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189 | // if (_param->_size_table>1) |
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190 | // update_address = "conv_integer(in_UPDATE_"+toString(i)+"_ADDRESS)"; |
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191 | // else |
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192 | // update_address = "0"; |
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193 | |
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194 | // vhdl->set_body ("\t\tif (in_UPDATE_"+toString(i)+"_VAL = '1') then"); |
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195 | // vhdl->set_body ("\t\t\treg_TABLE ("+update_address+") <= update_next_entry_"+toString(i)+";"); |
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196 | // vhdl->set_body ("\t\tend if;"); |
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197 | // } |
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198 | |
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199 | vhdl->set_body ("\tend if;"); |
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200 | vhdl->set_body ("end process reg_TABLE_write;"); |
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201 | |
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202 | vhdl->set_body (""); |
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203 | vhdl->set_body ("-----------------------------------------------------------------------------"); |
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204 | vhdl->set_body ("-- Output"); |
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205 | vhdl->set_body ("-----------------------------------------------------------------------------"); |
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206 | vhdl->set_body (""); |
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207 | vhdl->set_body ("-- Ack is always "); |
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208 | vhdl->set_body (""); |
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209 | for (uint32_t i=0; i<_param->_nb_access; i++) |
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210 | { |
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211 | vhdl->set_body ("out_ACCESS_"+toString(i)+"_ACK <= '1';"); |
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212 | vhdl->set_body ("out_ACCESS_"+toString(i)+"_VICTIM <= access_entity_"+toString(i)+" when in_ACCESS_"+toString(i)+"_VAL = '1' else (others => '0');"); |
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213 | } |
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214 | vhdl->set_body (""); |
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215 | // for (uint32_t i=0; i<_param->_nb_update; i++) |
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216 | // { |
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217 | // vhdl->set_body ("out_UPDATE_"+toString(i)+"_ACK <= '1';"); |
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218 | // } |
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219 | }; |
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220 | |
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221 | }; // end namespace victim_pseudo_lru |
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222 | }; // end namespace victim |
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223 | }; // end namespace generic |
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224 | |
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225 | }; // end namespace behavioural |
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226 | }; // end namespace morpheo |
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227 | #endif |
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