1 | ---------------------------------------------------------------------------------- |
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2 | -- Company: |
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3 | -- Engineer: KIEGAING EMMANUEL GEL EN 5 |
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4 | -- |
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5 | -- Create Date: 19:56:34 05/06/2011 |
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6 | -- Design Name: |
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7 | -- Module Name: Sheduler - Behavioral |
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8 | -- Project Name: |
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9 | -- Target Devices: |
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10 | -- Tool versions: |
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11 | -- Description: Module de l'ordonnanceur du switch crossbar |
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12 | -- l'algorithme utilisé est le DPA (diagonal propagation arbiter) |
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13 | -- intencie un scheduler particulier en fonction du nombre de port |
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14 | -- Dependencies: |
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15 | -- |
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16 | -- Revision: 1.0 |
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17 | -- reconstruction du dpa |
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18 | -- Revision 0.01 - File Created |
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19 | -- Additional Comments: |
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20 | -- |
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21 | ---------------------------------------------------------------------------------- |
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22 | library IEEE; |
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23 | use IEEE.STD_LOGIC_1164.ALL; |
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24 | use IEEE.STD_LOGIC_ARITH.ALL; |
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25 | use IEEE.STD_LOGIC_UNSIGNED.ALL; |
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26 | --use Work.Sheduler_package.all; |
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27 | |
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28 | ---- Uncomment the following library declaration if instantiating |
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29 | ---- any Xilinx primitives in this code. |
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30 | --library UNISIM; |
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31 | --use UNISIM.VComponents.all; |
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32 | |
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33 | entity Scheduler is |
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34 | generic(number_of_ports : positive := 4); |
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35 | Port ( Request : in STD_LOGIC_VECTOR (number_of_ports*number_of_ports downto 1); |
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36 | Fifo_full : in STD_LOGIC_VECTOR (number_of_ports downto 1); |
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37 | clk : in STD_LOGIC; |
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38 | reset : in STD_LOGIC; |
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39 | priority_rotation : in STD_LOGIC_VECTOR (number_of_ports downto 1); |
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40 | port_grant : out STD_LOGIC_VECTOR (number_of_ports*number_of_ports downto 1)); |
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41 | end Scheduler; |
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42 | |
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43 | architecture Behavioral of Scheduler is |
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44 | -- signaux pour le pipeline; |
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45 | signal Request_latch :STD_LOGIC_VECTOR (number_of_ports*number_of_ports downto 1):=(others=>'0'); |
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46 | signal Fifo_full_latch : STD_LOGIC_VECTOR (number_of_ports downto 1):=(others=>'0'); |
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47 | signal priority_rotation_latch : STD_LOGIC_VECTOR (number_of_ports downto 1):=(others=>'1'); |
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48 | |
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49 | -- composants du scheduler |
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50 | COMPONENT Scheduler2_2 |
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51 | PORT( |
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52 | Request : IN std_logic_vector(4 downto 1); |
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53 | Fifo_full : IN std_logic_vector(2 downto 1); |
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54 | clk : IN std_logic; |
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55 | reset : IN std_logic; |
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56 | port_grant : OUT std_logic_vector(4 downto 1); |
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57 | priority_rotation : in STD_LOGIC_VECTOR (2 downto 1) |
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58 | ); |
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59 | END COMPONENT; |
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60 | |
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61 | COMPONENT Scheduler3_3 |
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62 | PORT( |
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63 | Request : IN std_logic_vector(9 downto 1); |
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64 | Fifo_full : IN std_logic_vector(3 downto 1); |
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65 | clk : IN std_logic; |
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66 | reset : IN std_logic; |
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67 | port_grant : OUT std_logic_vector(9 downto 1); |
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68 | priority_rotation : in STD_LOGIC_VECTOR (3 downto 1) |
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69 | ); |
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70 | END COMPONENT; |
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71 | |
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72 | COMPONENT Scheduler4_4 |
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73 | PORT( |
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74 | Request : IN std_logic_vector(16 downto 1); |
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75 | Fifo_full : IN std_logic_vector(4 downto 1); |
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76 | clk : IN std_logic; |
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77 | reset : IN std_logic; |
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78 | port_grant : OUT std_logic_vector(16 downto 1); |
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79 | priority_rotation : in STD_LOGIC_VECTOR (4 downto 1) |
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80 | ); |
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81 | END COMPONENT; |
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82 | |
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83 | COMPONENT Scheduler5_5 |
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84 | PORT( |
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85 | Request : IN std_logic_vector(25 downto 1); |
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86 | Fifo_full : IN std_logic_vector(5 downto 1); |
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87 | clk : IN std_logic; |
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88 | reset : IN std_logic; |
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89 | port_grant : OUT std_logic_vector(25 downto 1); |
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90 | priority_rotation : in STD_LOGIC_VECTOR (5 downto 1) |
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91 | ); |
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92 | END COMPONENT; |
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93 | |
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94 | COMPONENT Scheduler6_6 |
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95 | PORT( |
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96 | Request : IN std_logic_vector(36 downto 1); |
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97 | Fifo_full : IN std_logic_vector(6 downto 1); |
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98 | clk : IN std_logic; |
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99 | reset : IN std_logic; |
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100 | port_grant : OUT std_logic_vector(36 downto 1); |
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101 | priority_rotation : in STD_LOGIC_VECTOR (6 downto 1) |
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102 | ); |
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103 | END COMPONENT; |
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104 | |
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105 | COMPONENT Scheduler7_7 |
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106 | PORT( |
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107 | Request : IN std_logic_vector(49 downto 1); |
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108 | Fifo_full : IN std_logic_vector(7 downto 1); |
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109 | clk : IN std_logic; |
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110 | reset : IN std_logic; |
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111 | port_grant : OUT std_logic_vector(49 downto 1); |
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112 | priority_rotation : in STD_LOGIC_VECTOR (7 downto 1) |
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113 | ); |
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114 | END COMPONENT; |
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115 | |
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116 | COMPONENT Scheduler8_8 |
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117 | PORT( |
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118 | Request : IN std_logic_vector(64 downto 1); |
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119 | Fifo_full : IN std_logic_vector(8 downto 1); |
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120 | clk : IN std_logic; |
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121 | reset : IN std_logic; |
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122 | port_grant : OUT std_logic_vector(64 downto 1); |
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123 | priority_rotation : in STD_LOGIC_VECTOR (8 downto 1) |
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124 | ); |
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125 | END COMPONENT; |
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126 | |
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127 | COMPONENT Scheduler9_9 |
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128 | PORT( |
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129 | Request : IN std_logic_vector(81 downto 1); |
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130 | Fifo_full : IN std_logic_vector(9 downto 1); |
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131 | clk : IN std_logic; |
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132 | reset : IN std_logic; |
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133 | port_grant : OUT std_logic_vector(81 downto 1); |
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134 | priority_rotation : in STD_LOGIC_VECTOR (9 downto 1) |
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135 | ); |
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136 | END COMPONENT; |
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137 | |
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138 | COMPONENT Scheduler10_10 |
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139 | PORT( |
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140 | Request : IN std_logic_vector(100 downto 1); |
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141 | Fifo_full : IN std_logic_vector(10 downto 1); |
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142 | clk : IN std_logic; |
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143 | reset : IN std_logic; |
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144 | port_grant : OUT std_logic_vector(100 downto 1); |
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145 | priority_rotation : in STD_LOGIC_VECTOR (10 downto 1) |
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146 | ); |
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147 | END COMPONENT; |
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148 | |
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149 | COMPONENT Scheduler11_11 |
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150 | PORT( |
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151 | Request : IN std_logic_vector(121 downto 1); |
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152 | Fifo_full : IN std_logic_vector(11 downto 1); |
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153 | clk : IN std_logic; |
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154 | reset : IN std_logic; |
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155 | port_grant : OUT std_logic_vector(121 downto 1); |
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156 | priority_rotation : in STD_LOGIC_VECTOR (11 downto 1) |
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157 | ); |
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158 | END COMPONENT; |
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159 | |
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160 | COMPONENT Scheduler12_12 |
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161 | PORT( |
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162 | Request : IN std_logic_vector(144 downto 1); |
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163 | Fifo_full : IN std_logic_vector(12 downto 1); |
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164 | clk : IN std_logic; |
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165 | reset : IN std_logic; |
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166 | port_grant : OUT std_logic_vector(144 downto 1); |
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167 | priority_rotation : in STD_LOGIC_VECTOR (12 downto 1) |
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168 | ); |
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169 | END COMPONENT; |
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170 | |
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171 | COMPONENT Scheduler13_13 |
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172 | PORT( |
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173 | Request : IN std_logic_vector(169 downto 1); |
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174 | Fifo_full : IN std_logic_vector(13 downto 1); |
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175 | clk : IN std_logic; |
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176 | reset : IN std_logic; |
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177 | port_grant : OUT std_logic_vector(169 downto 1); |
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178 | priority_rotation : in STD_LOGIC_VECTOR (13 downto 1) |
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179 | ); |
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180 | END COMPONENT; |
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181 | |
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182 | COMPONENT Scheduler14_14 |
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183 | PORT( |
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184 | Request : IN std_logic_vector(196 downto 1); |
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185 | Fifo_full : IN std_logic_vector(14 downto 1); |
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186 | clk : IN std_logic; |
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187 | reset : IN std_logic; |
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188 | port_grant : OUT std_logic_vector(196 downto 1); |
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189 | priority_rotation : in STD_LOGIC_VECTOR (14 downto 1) |
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190 | ); |
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191 | END COMPONENT; |
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192 | |
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193 | COMPONENT Scheduler15_15 |
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194 | PORT( |
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195 | Request : IN std_logic_vector(225 downto 1); |
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196 | Fifo_full : IN std_logic_vector(15 downto 1); |
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197 | clk : IN std_logic; |
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198 | reset : IN std_logic; |
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199 | port_grant : OUT std_logic_vector(225 downto 1); |
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200 | priority_rotation : in STD_LOGIC_VECTOR (15 downto 1) |
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201 | ); |
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202 | END COMPONENT; |
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203 | |
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204 | COMPONENT Scheduler16_16 |
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205 | PORT( |
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206 | Request : IN std_logic_vector(256 downto 1); |
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207 | Fifo_full : IN std_logic_vector(16 downto 1); |
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208 | clk : IN std_logic; |
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209 | reset : IN std_logic; |
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210 | port_grant : OUT std_logic_vector(256 downto 1); |
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211 | priority_rotation : in STD_LOGIC_VECTOR (16 downto 1) |
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212 | ); |
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213 | END COMPONENT; |
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214 | |
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215 | |
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216 | -- instanciation des scheduler |
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217 | --======================scheduler 2 ports======================= |
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218 | |
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219 | begin |
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220 | |
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221 | -- instanciation des scheduler |
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222 | --======================scheduler 2 ports======================= |
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223 | |
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224 | scheduler2x2 : if number_of_ports = 2 generate |
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225 | |
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226 | Inst_Scheduler2_2 : Scheduler2_2 |
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227 | PORT MAP( |
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228 | Request => Request_latch, |
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229 | Fifo_full => Fifo_full_latch, |
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230 | clk => clk , |
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231 | reset =>reset, |
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232 | priority_rotation =>priority_rotation_latch, |
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233 | port_grant =>port_grant); |
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234 | end generate scheduler2x2; |
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235 | |
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236 | --======================scheduler 3 ports======================= |
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237 | |
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238 | scheduler3x3 : if number_of_ports = 3 generate |
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239 | |
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240 | Inst_Scheduler3_3 : Scheduler3_3 |
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241 | PORT MAP( |
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242 | Request => Request_latch, |
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243 | Fifo_full => Fifo_full_latch, |
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244 | clk => clk , |
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245 | reset =>reset, |
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246 | priority_rotation =>priority_rotation_latch, |
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247 | port_grant =>port_grant); |
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248 | end generate scheduler3x3; |
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249 | |
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250 | --======================scheduler 4 ports======================= |
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251 | |
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252 | scheduler4x4 : if number_of_ports = 4 generate |
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253 | |
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254 | Inst_Scheduler4_4 : Scheduler4_4 |
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255 | PORT MAP( |
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256 | Request => Request_latch, |
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257 | Fifo_full => Fifo_full_latch, |
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258 | clk => clk , |
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259 | reset =>reset, |
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260 | priority_rotation =>priority_rotation_latch, |
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261 | port_grant =>port_grant); |
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262 | end generate scheduler4x4; |
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263 | |
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264 | --======================scheduler 5 ports======================= |
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265 | |
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266 | scheduler5x5 : if number_of_ports = 5 generate |
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267 | |
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268 | Inst_Scheduler5_5 : Scheduler5_5 |
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269 | PORT MAP( |
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270 | Request => Request, |
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271 | Fifo_full => Fifo_full, |
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272 | clk => clk , |
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273 | reset =>reset, |
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274 | priority_rotation =>priority_rotation, |
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275 | port_grant =>port_grant); |
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276 | end generate scheduler5x5; |
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277 | |
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278 | --======================scheduler 6 ports======================= |
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279 | |
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280 | scheduler6x6 : if number_of_ports = 6 generate |
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281 | |
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282 | Inst_Scheduler6_6 : Scheduler6_6 |
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283 | PORT MAP( |
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284 | Request => Request_latch, |
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285 | Fifo_full => Fifo_full_latch, |
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286 | clk => clk , |
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287 | reset =>reset, |
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288 | priority_rotation =>priority_rotation_latch, |
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289 | port_grant =>port_grant); |
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290 | end generate scheduler6x6; |
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291 | |
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292 | --======================scheduler 7 ports======================= |
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293 | |
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294 | scheduler7x7 : if number_of_ports = 7 generate |
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295 | |
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296 | Inst_Scheduler7_7 : Scheduler7_7 |
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297 | PORT MAP( |
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298 | Request => Request_latch, |
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299 | Fifo_full => Fifo_full_latch, |
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300 | clk => clk , |
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301 | reset =>reset, |
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302 | priority_rotation =>priority_rotation_latch, |
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303 | port_grant =>port_grant); |
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304 | end generate scheduler7x7; |
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305 | |
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306 | --======================scheduler 8 ports======================= |
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307 | |
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308 | scheduler8x8 : if number_of_ports = 8 generate |
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309 | |
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310 | Inst_Scheduler8_8 : Scheduler8_8 |
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311 | PORT MAP( |
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312 | Request => Request_latch, |
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313 | Fifo_full => Fifo_full_latch, |
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314 | clk => clk , |
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315 | reset =>reset, |
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316 | priority_rotation =>priority_rotation_latch, |
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317 | port_grant =>port_grant); |
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318 | end generate scheduler8x8; |
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319 | |
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320 | --======================scheduler 9 ports======================= |
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321 | |
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322 | scheduler9x9 : if number_of_ports = 9 generate |
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323 | |
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324 | Inst_Scheduler9_9 : Scheduler9_9 |
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325 | PORT MAP( |
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326 | Request => Request_latch, |
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327 | Fifo_full => Fifo_full_latch, |
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328 | clk => clk , |
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329 | reset =>reset, |
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330 | priority_rotation =>priority_rotation_latch, |
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331 | port_grant =>port_grant); |
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332 | end generate scheduler9x9; |
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333 | |
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334 | --======================scheduler 10 ports======================= |
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335 | |
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336 | scheduler10x10 : if number_of_ports = 10 generate |
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337 | |
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338 | Inst_Scheduler10_10 : Scheduler10_10 |
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339 | PORT MAP( |
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340 | Request => Request, |
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341 | Fifo_full => Fifo_full, |
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342 | clk => clk , |
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343 | reset =>reset, |
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344 | priority_rotation =>priority_rotation, |
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345 | port_grant =>port_grant); |
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346 | end generate scheduler10x10; |
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347 | |
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348 | --======================scheduler 11 ports======================= |
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349 | |
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350 | scheduler11x11 : if number_of_ports = 11 generate |
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351 | |
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352 | Inst_Scheduler11_11 : Scheduler11_11 |
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353 | PORT MAP( |
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354 | Request => Request, |
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355 | Fifo_full => Fifo_full, |
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356 | clk => clk , |
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357 | reset =>reset, |
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358 | priority_rotation =>priority_rotation, |
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359 | port_grant =>port_grant); |
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360 | end generate scheduler11x11; |
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361 | |
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362 | --======================scheduler 12 ports======================= |
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363 | |
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364 | scheduler12x12 : if number_of_ports = 12 generate |
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365 | |
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366 | Inst_Scheduler12_12 : Scheduler12_12 |
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367 | PORT MAP( |
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368 | Request => Request_latch, |
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369 | Fifo_full => Fifo_full_latch, |
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370 | clk => clk , |
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371 | reset =>reset, |
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372 | priority_rotation =>priority_rotation_latch, |
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373 | port_grant =>port_grant); |
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374 | end generate scheduler12x12; |
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375 | |
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376 | --======================scheduler 13 ports======================= |
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377 | |
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378 | scheduler13x13 : if number_of_ports = 13 generate |
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379 | |
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380 | Inst_Scheduler13_13 : Scheduler13_13 |
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381 | PORT MAP( |
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382 | Request => Request_latch, |
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383 | Fifo_full => Fifo_full_latch, |
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384 | clk => clk , |
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385 | reset =>reset, |
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386 | priority_rotation =>priority_rotation_latch, |
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387 | port_grant =>port_grant); |
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388 | end generate scheduler13x13; |
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389 | |
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390 | --======================scheduler 14 ports======================= |
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391 | |
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392 | scheduler14x14 : if number_of_ports = 14 generate |
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393 | |
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394 | Inst_Scheduler14_14 : Scheduler14_14 |
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395 | PORT MAP( |
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396 | Request => Request_latch, |
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397 | Fifo_full => Fifo_full_latch, |
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398 | clk => clk , |
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399 | reset =>reset, |
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400 | priority_rotation =>priority_rotation_latch, |
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401 | port_grant =>port_grant); |
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402 | end generate scheduler14x14; |
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403 | |
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404 | --======================scheduler 15 ports======================= |
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405 | |
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406 | scheduler15x15 : if number_of_ports = 15 generate |
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407 | |
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408 | Inst_Scheduler15_15 : Scheduler15_15 |
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409 | PORT MAP( |
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410 | Request => Request_latch, |
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411 | Fifo_full => Fifo_full_latch, |
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412 | clk => clk , |
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413 | reset =>reset, |
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414 | priority_rotation =>priority_rotation_latch, |
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415 | port_grant =>port_grant); |
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416 | end generate scheduler15x15; |
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417 | |
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418 | --======================scheduler 16 ports======================= |
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419 | |
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420 | scheduler16x16 : if number_of_ports = 16 generate |
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421 | |
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422 | Inst_Scheduler16_16 : Scheduler16_16 |
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423 | PORT MAP( |
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424 | Request => Request_latch, |
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425 | Fifo_full => Fifo_full_latch, |
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426 | clk => clk , |
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427 | reset =>reset, |
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428 | priority_rotation =>priority_rotation_latch, |
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429 | port_grant =>port_grant); |
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430 | end generate scheduler16x16; |
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431 | Sched:process (clk,reset) |
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432 | begin |
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433 | if rising_edge(clk) then |
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434 | if reset='1' then |
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435 | request_latch<=(others=>'0'); |
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436 | Fifo_full_latch<=(others=>'0'); |
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437 | priority_rotation_latch<=(others=>'1'); |
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438 | else |
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439 | request_latch<=request; |
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440 | Fifo_full_latch<=fifo_full; |
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441 | priority_rotation_latch<=priority_rotation; |
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442 | end if; |
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443 | end if; |
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444 | end process sched; |
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445 | end Behavioral; |
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446 | |
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