1 | /* -*- c++ -*- |
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2 | * |
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3 | * File : dspin_router_tsar.h |
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4 | * Copyright (c) UPMC, Lip6 |
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5 | * Authors : Alain Greiner |
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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 | */ |
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28 | |
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29 | //////////////////////////////////////////////////////////////////////////////// |
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30 | // This component implements a variant of the standard (SocLib) DSPIN router: |
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31 | // The routing function has been modified to handle the special case of |
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32 | // cluster_iob0 (containing component IOB0) and cluster_iob1 (containing |
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33 | // component IOB1). In those two cluster, the response router must decode |
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34 | // both the SRCID global bits AND the SRCID local bits to distinguish |
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35 | // between the IOB and MEMC initiators. |
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36 | // This component contains the following modifications: |
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37 | // - 4 extra constructor arguments, |
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38 | // - 6 new member variables |
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39 | // - a modified routing function |
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40 | //////////////////////////////////////////////////////////////////////////////// |
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41 | |
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42 | #ifndef DSPIN_ROUTER_TSAR_H_ |
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43 | #define DSPIN_ROUTER_TSAR_H_ |
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44 | |
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45 | #include <systemc> |
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46 | #include "caba_base_module.h" |
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47 | #include "generic_fifo.h" |
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48 | #include "dspin_interface.h" |
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49 | #include "alloc_elems.h" |
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50 | |
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51 | namespace soclib { namespace caba { |
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52 | |
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53 | using namespace sc_core; |
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54 | |
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55 | template<int flit_width> |
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56 | class DspinRouterTsar |
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57 | : public soclib::caba::BaseModule |
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58 | { |
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59 | // Port indexing |
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60 | enum |
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61 | { |
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62 | DSPIN_NORTH = 0, |
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63 | DSPIN_SOUTH = 1, |
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64 | DSPIN_EAST = 2, |
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65 | DSPIN_WEST = 3, |
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66 | DSPIN_LOCAL = 4, |
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67 | }; |
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68 | |
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69 | // Input Port FSM |
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70 | enum |
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71 | { |
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72 | INFSM_IDLE, |
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73 | INFSM_REQ, |
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74 | INFSM_ALLOC, |
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75 | }; |
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76 | |
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77 | protected: |
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78 | SC_HAS_PROCESS(DspinRouterTsar); |
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79 | |
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80 | public: |
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81 | |
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82 | // ports |
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83 | sc_in<bool> p_clk; |
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84 | sc_in<bool> p_resetn; |
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85 | DspinInput<flit_width> *p_in; |
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86 | DspinOutput<flit_width> *p_out; |
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87 | |
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88 | // constructor |
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89 | DspinRouterTsar( |
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90 | sc_module_name name, |
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91 | const size_t x, // x coordinate |
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92 | const size_t y, // y cordinate |
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93 | const size_t x_width, // x field width in first flit |
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94 | const size_t y_width, // y field width in first flit |
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95 | const size_t in_fifo_depth, // input fifo depth |
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96 | const size_t out_fifo_depth, // output fifo depth |
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97 | const bool is_iob0, // cluster containing IOB0 |
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98 | const bool is_iob1, // cluster containing IOB0 |
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99 | const bool is_rsp, // only response router is modified |
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100 | const size_t l_width); // local srcid width |
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101 | private: |
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102 | |
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103 | // define the FIFO flit |
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104 | typedef struct internal_flit_s |
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105 | { |
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106 | sc_uint<flit_width> data; |
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107 | bool eop; |
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108 | } internal_flit_t; |
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109 | |
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110 | // registers |
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111 | sc_signal<bool> *r_alloc_out; |
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112 | sc_signal<size_t> *r_index_out; |
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113 | sc_signal<int> *r_fsm_in; |
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114 | sc_signal<size_t> *r_index_in; |
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115 | |
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116 | // fifos |
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117 | soclib::caba::GenericFifo<internal_flit_t>* r_fifo_in; |
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118 | soclib::caba::GenericFifo<internal_flit_t>* r_fifo_out; |
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119 | |
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120 | // structural parameters |
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121 | size_t m_local_x; |
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122 | size_t m_local_y; |
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123 | size_t m_x_width; |
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124 | size_t m_x_shift; |
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125 | size_t m_x_mask; |
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126 | size_t m_y_width; |
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127 | size_t m_y_shift; |
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128 | size_t m_y_mask; |
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129 | size_t m_l_width; |
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130 | size_t m_l_shift; |
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131 | size_t m_l_mask; |
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132 | bool m_is_iob0; |
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133 | bool m_is_iob1; |
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134 | bool m_is_rsp; |
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135 | |
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136 | // methods |
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137 | void transition(); |
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138 | void genMoore(); |
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139 | size_t route( sc_uint<flit_width> data ); |
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140 | |
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141 | public: |
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142 | |
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143 | void print_trace(); |
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144 | }; |
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145 | |
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146 | }} // end namespace |
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147 | |
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148 | #endif // DSPIN_ROUTER_TSAR_H_ |
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149 | |
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150 | // Local Variables: |
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151 | // tab-width: 4 |
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152 | // c-basic-offset: 4 |
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153 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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154 | // indent-tabs-mode: nil |
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155 | // End: |
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156 | |
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157 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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