1 | |
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2 | /* SOCLIB_LGPL_HEADER_BEGIN |
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3 | * |
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4 | * This file is part of SoCLib, GNU LGPLv2.1. |
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5 | * |
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6 | * SoCLib is free software; you can redistribute it and/or modify it |
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7 | * under the terms of the GNU Lesser General Public License as published |
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8 | * by the Free Software Foundation; version 2.1 of the License. |
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9 | * |
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10 | * SoCLib is distributed in the hope that it will be useful, but |
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11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | * Lesser General Public License for more details. |
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14 | * |
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15 | * You should have received a copy of the GNU Lesser General Public |
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16 | * License along with SoCLib; if not, write to the Free Software |
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17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 | * 02110-1301 USA |
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19 | * |
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20 | * SOCLIB_LGPL_HEADER_END |
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21 | * |
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22 | * Author : Abdelmalek SI MERABET |
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23 | * Date : Februrary 2011 |
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24 | * Copyright: UPMC - LIP6 |
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25 | */ |
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26 | #ifndef DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
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27 | #define DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
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28 | |
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29 | #include "caba_base_module.h" |
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30 | #include "generic_fifo.h" |
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31 | #include "mapping_table.h" |
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32 | #include "ring_signals_fast.h" |
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33 | #include "dspin_interface.h" |
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34 | |
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35 | // #define HI_DEBUG |
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36 | //#define HI_STATS |
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37 | |
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38 | namespace soclib { namespace caba { |
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39 | |
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40 | namespace { |
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41 | |
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42 | const char *ring_cmd_fsm_state_str_hi[] = { |
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43 | "CMD_IDLE", |
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44 | "OWNER", |
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45 | "BDC_FIRST", |
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46 | "BDC_SECOND", |
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47 | "SENDING", |
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48 | "PREEMPT", |
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49 | }; |
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50 | |
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51 | #ifdef HI_DEBUG |
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52 | |
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53 | const char *ring_rsp_fsm_state_str_hi[] = { |
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54 | "RSP_IDLE", |
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55 | "ALLOC", |
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56 | "NALLOC", |
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57 | }; |
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58 | #endif |
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59 | |
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60 | } |
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61 | template<typename vci_param, int ring_cmd_data_size, int ring_rsp_data_size> |
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62 | class DspinHalfGatewayInitiatorFastC |
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63 | { |
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64 | |
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65 | typedef LocalRingSignals ring_signal_t; |
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66 | typedef DspinInput<ring_cmd_data_size> cmd_in_t; |
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67 | typedef DspinOutput<ring_rsp_data_size> rsp_out_t; |
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68 | |
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69 | private: |
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70 | |
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71 | enum ring_rsp_fsm_state_e { |
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72 | RSP_IDLE, // waiting for first flit of a response packet |
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73 | ALLOC, // next flit of a local rsp packet |
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74 | NALLOC, // next flit of a ring rsp packet |
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75 | }; |
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76 | |
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77 | enum ring_cmd_fsm_state_e { |
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78 | CMD_IDLE, |
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79 | OWNER, |
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80 | BDC_FIRST, |
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81 | BDC_SECOND, |
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82 | SENDING, |
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83 | PREEMPT, |
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84 | }; |
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85 | |
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86 | // structural parameters |
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87 | std::string m_name; |
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88 | bool m_alloc_init; |
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89 | |
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90 | |
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91 | // internal fifos |
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92 | GenericFifo<uint64_t > m_cmd_fifo; // fifo for the local command packet |
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93 | GenericFifo<uint64_t > m_rsp_fifo; // fifo for the local response packet |
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94 | |
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95 | // routing table |
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96 | soclib::common::AddressDecodingTable<uint32_t, bool> m_lt; |
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97 | |
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98 | uint64_t r_brdcst_save; |
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99 | uint32_t m_srcid; |
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100 | uint32_t m_nb_target; |
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101 | uint32_t m_x_width; |
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102 | uint32_t m_y_width; |
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103 | #if defined(HI_DEBUG) or defined(HI_STATS) |
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104 | uint32_t m_cpt; |
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105 | #endif |
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106 | #ifdef HI_DEBUG |
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107 | uint32_t m_cyc; |
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108 | #endif |
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109 | |
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110 | // internal registers |
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111 | sc_core::sc_signal<uint32_t> r_cpt_tgt; // target id for sequential broadcast |
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112 | sc_core::sc_signal<uint32_t> r_ring_cmd_fsm; // ring command packet FSM (distributed) |
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113 | sc_core::sc_signal<uint32_t> r_ring_rsp_fsm; // ring response packet FSM |
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114 | |
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115 | #ifdef HI_STATS |
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116 | uint32_t tok_wait; |
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117 | uint32_t fifo_full; |
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118 | uint32_t flits_sent; |
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119 | uint32_t preempt; |
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120 | uint32_t wait_rok; |
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121 | #endif |
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122 | |
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123 | public : |
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124 | |
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125 | #define __renRegGateInit(x) x((((std::string) name)+"_" #x).c_str()) |
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126 | |
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127 | DspinHalfGatewayInitiatorFastC( |
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128 | const char *name, |
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129 | bool alloc_init, |
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130 | const int &wrapper_fifo_depth, |
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131 | const soclib::common::MappingTable &mt, |
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132 | const soclib::common::IntTab &ringid, |
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133 | const uint32_t &nb_target, |
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134 | const uint32_t &x_width, |
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135 | const uint32_t &y_width) |
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136 | : m_name(name), |
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137 | m_alloc_init(alloc_init), |
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138 | m_cmd_fifo(((std::string) name)+"m_cmd_fifo", wrapper_fifo_depth), |
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139 | m_rsp_fifo(((std::string) name)+"m_rsp_fifo", wrapper_fifo_depth), |
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140 | m_lt(mt.getIdLocalityTable(ringid)), |
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141 | m_nb_target(nb_target), |
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142 | m_x_width(x_width), |
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143 | m_y_width(y_width), |
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144 | __renRegInitS(r_cpt_tgt), |
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145 | __renRegGateInit(r_ring_cmd_fsm), |
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146 | __renRegGateInit(r_ring_rsp_fsm) |
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147 | { } // end constructor |
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148 | |
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149 | |
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150 | void reset() |
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151 | { |
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152 | if(m_alloc_init) |
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153 | r_ring_cmd_fsm = OWNER; |
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154 | else |
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155 | r_ring_cmd_fsm = CMD_IDLE; |
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156 | |
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157 | r_ring_rsp_fsm = RSP_IDLE; |
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158 | m_cmd_fifo.init(); |
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159 | m_rsp_fifo.init(); |
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160 | |
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161 | #if defined(HI_DEBUG) or defined(HI_STATS) |
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162 | m_cpt = 0; |
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163 | #endif |
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164 | #ifdef HI_DEBUG |
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165 | m_cyc = (uint32_t) atoi(getenv("CYCLES")); |
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166 | #endif |
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167 | |
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168 | #ifdef HI_STATS |
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169 | tok_wait = 0; |
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170 | fifo_full = 0; |
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171 | flits_sent = 0; |
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172 | preempt = 0; |
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173 | wait_rok = 0; |
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174 | #endif |
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175 | } |
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176 | |
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177 | void transition(const cmd_in_t &p_gate_cmd_in, const rsp_out_t &p_gate_rsp_out, const ring_signal_t p_ring_in, cmd_str &init_cmd, bool &init_rsp_val, const bool tga) |
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178 | { |
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179 | |
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180 | bool cmd_fifo_get = false; |
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181 | bool cmd_fifo_put = false; |
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182 | uint64_t cmd_fifo_data = 0; |
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183 | |
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184 | bool rsp_fifo_put = false; |
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185 | uint64_t rsp_fifo_data = 0; |
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186 | |
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187 | |
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188 | //////////// VCI CMD FSM ///////////////////////// |
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189 | |
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190 | if (p_gate_cmd_in.write.read()) { |
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191 | cmd_fifo_data = (uint64_t) p_gate_cmd_in.data.read(); |
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192 | cmd_fifo_put = m_cmd_fifo.wok(); |
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193 | } |
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194 | |
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195 | bool rsp_fifo_get = p_gate_rsp_out.read.read(); |
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196 | |
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197 | //////////// RING CMD FSM ///////////////////////// |
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198 | switch( r_ring_cmd_fsm ) |
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199 | { |
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200 | case CMD_IDLE: |
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201 | { |
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202 | |
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203 | #ifdef HI_DEBUG |
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204 | if(m_cpt > m_cyc) |
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205 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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206 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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207 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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208 | << " - fifo _data : " << std::hex << m_cmd_fifo.read() |
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209 | << " - in grant : " << p_ring_in.cmd_grant |
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210 | << " - in tga : " << tga |
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211 | << " - in wok : " << p_ring_in.cmd_r |
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212 | << " - in data : " << p_ring_in.cmd_data |
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213 | |
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214 | << std::endl; |
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215 | #endif |
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216 | |
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217 | #ifdef HI_STATS |
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218 | if ( m_cmd_fifo.rok() && tga ) |
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219 | { |
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220 | preempt +=1; |
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221 | if(!p_ring_in.cmd_r) |
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222 | fifo_full +=1; |
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223 | else |
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224 | flits_sent +=1; |
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225 | } |
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226 | else if ( m_cmd_fifo.rok() && !p_ring_in.cmd_grant ) |
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227 | tok_wait +=1; |
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228 | #endif |
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229 | // tga : target gate allocated |
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230 | if(m_cmd_fifo.rok() && tga) |
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231 | { |
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232 | cmd_fifo_get = p_ring_in.cmd_r; |
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233 | r_ring_cmd_fsm = PREEMPT; |
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234 | break; |
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235 | } |
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236 | |
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237 | if(m_cmd_fifo.rok() && p_ring_in.cmd_grant) |
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238 | { |
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239 | r_ring_cmd_fsm = SENDING; |
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240 | } |
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241 | } |
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242 | break; |
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243 | |
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244 | case OWNER: |
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245 | |
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246 | #ifdef HI_DEBUG |
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247 | if(m_cpt > m_cyc) |
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248 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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249 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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250 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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251 | << " - in grant : " << p_ring_in.cmd_grant |
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252 | << " - in wok : " << p_ring_in.cmd_r |
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253 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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254 | << std::endl; |
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255 | #endif |
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256 | |
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257 | #ifdef HI_STATS |
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258 | if( m_cmd_fifo.rok() & p_ring_in.cmd_r) |
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259 | flits_sent += 1; |
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260 | if( m_cmd_fifo.rok() & !p_ring_in.cmd_r) |
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261 | fifo_full += 1; |
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262 | #endif |
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263 | |
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264 | if ( m_cmd_fifo.rok() ) |
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265 | { |
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266 | cmd_fifo_get = p_ring_in.cmd_r; |
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267 | r_ring_cmd_fsm = SENDING; |
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268 | } |
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269 | else if ( !p_ring_in.cmd_grant ) |
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270 | r_ring_cmd_fsm = CMD_IDLE; |
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271 | break; |
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272 | |
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273 | case BDC_FIRST: |
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274 | |
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275 | #ifdef I_DEBUG |
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276 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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277 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_i[r_ring_cmd_fsm] |
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278 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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279 | << " - in grant : " << p_ring_in.cmd_grant |
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280 | << " - preempt : " << r_preempt |
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281 | << " - in wok : " << p_ring_in.cmd_r |
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282 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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283 | << std::endl; |
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284 | |
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285 | #endif |
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286 | |
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287 | if (p_ring_in.cmd_r) |
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288 | { |
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289 | if (r_cpt_tgt.read() == 0) |
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290 | { |
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291 | cmd_fifo_get = true; |
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292 | } |
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293 | r_ring_cmd_fsm = BDC_SECOND; |
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294 | } |
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295 | break; |
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296 | |
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297 | case BDC_SECOND: |
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298 | #ifdef I_DEBUG |
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299 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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300 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_i[r_ring_cmd_fsm] |
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301 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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302 | << " - in grant : " << p_ring_in.cmd_grant |
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303 | << " - preempt : " << r_preempt |
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304 | << " - in wok : " << p_ring_in.cmd_r |
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305 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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306 | << std::endl; |
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307 | |
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308 | #endif |
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309 | |
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310 | if(m_cmd_fifo.rok() && p_ring_in.cmd_r) |
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311 | { |
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312 | if(r_cpt_tgt.read() == m_nb_target - 1) |
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313 | { |
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314 | cmd_fifo_get = true; |
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315 | |
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316 | if ( !r_preempt && p_ring_in.cmd_grant ) |
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317 | { |
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318 | r_ring_cmd_fsm = OWNER; |
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319 | } |
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320 | else //r_preempt || !p_ring_in.cmd_grant |
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321 | { |
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322 | r_ring_cmd_fsm = CMD_IDLE; |
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323 | } |
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324 | } |
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325 | else |
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326 | { |
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327 | r_cpt_tgt = r_cpt_tgt + 1; |
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328 | r_ring_cmd_fsm = BDC_FIRST; |
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329 | } |
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330 | |
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331 | } |
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332 | break; |
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333 | |
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334 | case SENDING: |
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335 | #ifdef HI_DEBUG |
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336 | if(m_cpt > m_cyc) |
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337 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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338 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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339 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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340 | << " - in grant : " << p_ring_in.cmd_grant |
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341 | << " - in wok : " << p_ring_in.cmd_r |
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342 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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343 | << std::endl; |
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344 | #endif |
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345 | |
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346 | #ifdef HI_STATS |
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347 | if (m_cmd_fifo.rok() && p_ring_in.cmd_r) |
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348 | flits_sent +=1; |
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349 | else if (m_cmd_fifo.rok() && !p_ring_in.cmd_r) |
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350 | fifo_full +=1; |
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351 | #endif |
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352 | |
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353 | |
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354 | if(m_cmd_fifo.rok() && p_ring_in.cmd_r ) |
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355 | { |
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356 | cmd_fifo_get = true; |
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357 | bool eop = ((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1; |
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358 | if (eop) |
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359 | { |
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360 | if ( p_ring_in.cmd_grant ) |
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361 | r_ring_cmd_fsm = OWNER; |
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362 | else |
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363 | r_ring_cmd_fsm = CMD_IDLE; |
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364 | } |
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365 | } |
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366 | break; |
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367 | |
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368 | case PREEMPT: |
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369 | #ifdef HI_DEBUG |
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370 | if(m_cpt > m_cyc) |
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371 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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372 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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373 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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374 | << " - in grant : " << p_ring_in.cmd_grant |
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375 | << " - in tga : " << tga |
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376 | << " - in wok : " << p_ring_in.cmd_r |
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377 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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378 | << std::endl; |
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379 | #endif |
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380 | |
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381 | #ifdef HI_STATS |
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382 | if (m_cmd_fifo.rok()) |
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383 | { |
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384 | preempt +=1; |
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385 | if(p_ring_in.cmd_r) |
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386 | flits_sent +=1; |
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387 | else |
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388 | fifo_full +=1; |
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389 | } |
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390 | else |
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391 | wait_rok +=1; |
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392 | #endif |
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393 | |
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394 | if(m_cmd_fifo.rok() && p_ring_in.cmd_r ) |
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395 | { |
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396 | cmd_fifo_get = true; |
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397 | bool eop = ((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1; |
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398 | if (eop) |
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399 | { |
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400 | r_ring_cmd_fsm = CMD_IDLE; |
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401 | } |
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402 | } |
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403 | break; |
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404 | |
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405 | } // end switch ring cmd fsm |
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406 | |
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407 | /////////// RING RSP FSM //////////////////////// |
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408 | |
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409 | switch( r_ring_rsp_fsm ) |
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410 | { |
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411 | case RSP_IDLE: |
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412 | |
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413 | { |
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414 | uint32_t rsrcid = (uint32_t) ((sc_dt::sc_uint<vci_param::S>) ((p_ring_in.rsp_data >> (ring_rsp_data_size-m_x_width-m_y_width - 1)) << (vci_param::S-m_x_width-m_y_width))); |
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415 | bool islocal = !m_lt[rsrcid]; |
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416 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
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417 | #ifdef HI_DEBUG |
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418 | if(m_cpt > m_cyc) |
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419 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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420 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
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421 | << " - in preempt : " << p_ring_in.rsp_preempt |
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422 | << " - in rok : " << p_ring_in.rsp_w |
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423 | << " - in data : " << std::hex << p_ring_in.rsp_data |
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424 | << " - rsrcid : " << rsrcid |
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425 | << " - isloc : " << islocal |
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426 | << " - in wok : " << p_ring_in.rsp_r |
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427 | << " - fifo wok : " << m_rsp_fifo.wok() |
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428 | << " - reop : " << reop |
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429 | << std::endl; |
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430 | #endif |
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431 | |
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432 | |
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433 | if (p_ring_in.rsp_w) |
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434 | { |
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435 | if(islocal) |
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436 | { |
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437 | rsp_fifo_put = m_rsp_fifo.wok(); |
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438 | rsp_fifo_data = p_ring_in.rsp_data; |
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439 | |
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440 | if (reop && m_rsp_fifo.wok()) |
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441 | r_ring_rsp_fsm = RSP_IDLE; |
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442 | else |
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443 | r_ring_rsp_fsm = ALLOC; |
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444 | } |
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445 | |
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446 | else // !islocal |
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447 | { |
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448 | |
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449 | if (reop && p_ring_in.rsp_r) |
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450 | r_ring_rsp_fsm = RSP_IDLE; |
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451 | else |
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452 | r_ring_rsp_fsm = NALLOC; |
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453 | } |
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454 | } |
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455 | else // !p_ring_in.rsp_w |
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456 | r_ring_rsp_fsm = RSP_IDLE; |
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457 | } |
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458 | break; |
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459 | |
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460 | case ALLOC: |
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461 | { |
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462 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
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463 | #ifdef HI_DEBUG |
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464 | if(m_cpt > m_cyc) |
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465 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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466 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
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467 | << " - in preempt : " << p_ring_in.rsp_preempt |
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468 | << " - in rok : " << p_ring_in.rsp_w |
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469 | << " - in wok : " << p_ring_in.rsp_r |
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470 | << " - in data : " << std::hex << p_ring_in.rsp_data |
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471 | << " - fifo wok : " << m_rsp_fifo.wok() |
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472 | << " - reop : " << reop |
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473 | << std::endl; |
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474 | #endif |
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475 | |
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476 | |
---|
477 | if(p_ring_in.rsp_preempt) break; |
---|
478 | |
---|
479 | if (p_ring_in.rsp_w && m_rsp_fifo.wok() && reop) |
---|
480 | { |
---|
481 | |
---|
482 | rsp_fifo_put = true; |
---|
483 | rsp_fifo_data = p_ring_in.rsp_data; |
---|
484 | |
---|
485 | if(p_ring_in.rsp_palloc) |
---|
486 | r_ring_rsp_fsm = NALLOC; |
---|
487 | else |
---|
488 | r_ring_rsp_fsm = RSP_IDLE; |
---|
489 | } |
---|
490 | else // !p_ring_in.rsp_w || !m_rsp_fifo.wok() || !reop |
---|
491 | { |
---|
492 | |
---|
493 | rsp_fifo_put = p_ring_in.rsp_w && m_rsp_fifo.wok(); |
---|
494 | rsp_fifo_data = p_ring_in.rsp_data; |
---|
495 | r_ring_rsp_fsm = ALLOC; |
---|
496 | } |
---|
497 | } |
---|
498 | break; |
---|
499 | |
---|
500 | case NALLOC: |
---|
501 | { |
---|
502 | |
---|
503 | #ifdef HI_DEBUG |
---|
504 | if(m_cpt > m_cyc) |
---|
505 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
506 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
---|
507 | << " - in rok : " << p_ring_in.rsp_w |
---|
508 | << " - fifo wok : " << m_rsp_fifo.wok() |
---|
509 | << " - in wok : " << p_ring_in.rsp_r |
---|
510 | << " - in data : " << std::hex << p_ring_in.rsp_data |
---|
511 | << std::endl; |
---|
512 | #endif |
---|
513 | |
---|
514 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
---|
515 | |
---|
516 | |
---|
517 | if (p_ring_in.rsp_w && reop && p_ring_in.rsp_r) |
---|
518 | { |
---|
519 | r_ring_rsp_fsm = RSP_IDLE; |
---|
520 | } |
---|
521 | else |
---|
522 | { |
---|
523 | r_ring_rsp_fsm = NALLOC; |
---|
524 | } |
---|
525 | } |
---|
526 | break; |
---|
527 | |
---|
528 | } // end switch rsp fsm |
---|
529 | |
---|
530 | #if defined(HI_DEBUG) or defined(HI_STATS) |
---|
531 | m_cpt+=1; |
---|
532 | #endif |
---|
533 | |
---|
534 | //////////////////////// |
---|
535 | // fifos update // |
---|
536 | //////////////////////// |
---|
537 | |
---|
538 | //-- keep trace on ring traffic |
---|
539 | init_cmd.cmdval = cmd_fifo_get; |
---|
540 | init_cmd.flit = m_cmd_fifo.read(); |
---|
541 | init_cmd.state = ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm]; |
---|
542 | |
---|
543 | //init_cmd_val = cmd_fifo_get; |
---|
544 | init_rsp_val = rsp_fifo_put; |
---|
545 | // local cmd fifo update |
---|
546 | if ( cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.put_and_get(cmd_fifo_data); |
---|
547 | else if ( cmd_fifo_put && !cmd_fifo_get ) m_cmd_fifo.simple_put(cmd_fifo_data); |
---|
548 | else if ( !cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.simple_get(); |
---|
549 | |
---|
550 | // local rsp fifo update |
---|
551 | if ( rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.put_and_get(rsp_fifo_data); |
---|
552 | else if ( rsp_fifo_put && !rsp_fifo_get ) m_rsp_fifo.simple_put(rsp_fifo_data); |
---|
553 | else if ( !rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.simple_get(); |
---|
554 | |
---|
555 | } // end Transition() |
---|
556 | |
---|
557 | /////////////////////////////////////////////////////////////////// |
---|
558 | void genMoore(cmd_in_t &p_gate_cmd_in, rsp_out_t &p_gate_rsp_out) |
---|
559 | /////////////////////////////////////////////////////////////////// |
---|
560 | { |
---|
561 | p_gate_rsp_out.write = m_rsp_fifo.rok(); |
---|
562 | p_gate_rsp_out.data = (sc_dt::sc_uint<ring_rsp_data_size>) m_rsp_fifo.read(); |
---|
563 | |
---|
564 | p_gate_cmd_in.read= m_cmd_fifo.wok(); |
---|
565 | |
---|
566 | } // end genMoore |
---|
567 | |
---|
568 | /////////////////////////////////////////////////////////////////// |
---|
569 | void update_ring_signals(ring_signal_t p_ring_in, ring_signal_t &p_ring_out, bool tga, bool &iga) |
---|
570 | /////////////////////////////////////////////////////////////////// |
---|
571 | { |
---|
572 | switch( r_ring_cmd_fsm ) |
---|
573 | { |
---|
574 | case CMD_IDLE: |
---|
575 | { |
---|
576 | |
---|
577 | p_ring_out.cmd_grant = !m_cmd_fifo.rok() && p_ring_in.cmd_grant; |
---|
578 | |
---|
579 | p_ring_out.cmd_preempt = m_cmd_fifo.rok() && tga; |
---|
580 | p_ring_out.cmd_palloc = m_cmd_fifo.rok() && tga; |
---|
581 | p_ring_out.cmd_header = m_cmd_fifo.rok(); |
---|
582 | |
---|
583 | if (m_cmd_fifo.rok() && tga) |
---|
584 | { |
---|
585 | p_ring_out.cmd_w = m_cmd_fifo.rok(); |
---|
586 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
587 | } |
---|
588 | else |
---|
589 | { |
---|
590 | p_ring_out.cmd_w = p_ring_in.cmd_w; |
---|
591 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
---|
592 | } |
---|
593 | |
---|
594 | } |
---|
595 | break; |
---|
596 | |
---|
597 | case OWNER: |
---|
598 | p_ring_out.cmd_grant = !m_cmd_fifo.rok(); |
---|
599 | |
---|
600 | p_ring_out.cmd_preempt = 0; |
---|
601 | p_ring_out.cmd_header = 0; |
---|
602 | p_ring_out.cmd_palloc = 0; |
---|
603 | p_ring_out.cmd_w = m_cmd_fifo.rok(); |
---|
604 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
605 | break; |
---|
606 | |
---|
607 | case BDC_FIRST: |
---|
608 | p_ring_out.cmd_header = 1; |
---|
609 | p_ring_out.cmd_palloc = r_preempt+(tga ? 1:0);; |
---|
610 | p_ring_out.cmd_preempt = r_preempt; |
---|
611 | |
---|
612 | p_ring_out.cmd_grant = r_preempt && p_ring_in.cmd_grant; |
---|
613 | p_ring_out.cmd_w = true; |
---|
614 | p_ring_out.cmd_data = r_brdcst_save | ((((uint64_t) r_cpt_tgt.read()) & 0xF) << 0x1); |
---|
615 | break; |
---|
616 | |
---|
617 | case BDC_SECOND: |
---|
618 | p_ring_out.cmd_header = 0; |
---|
619 | p_ring_out.cmd_palloc = r_preempt+(tga ? 1:0);; |
---|
620 | p_ring_out.cmd_preempt = r_preempt && m_cmd_fifo.rok(); |
---|
621 | |
---|
622 | if (r_preempt && !m_cmd_fifo_rok()) |
---|
623 | { |
---|
624 | // if init local has finished, tga = 0 |
---|
625 | // init gate remains the only initiator, then w = 0 |
---|
626 | p_ring_out.cmd_w = p_ring_in.cmd_w && tga; |
---|
627 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
---|
628 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
---|
629 | } |
---|
630 | else |
---|
631 | { |
---|
632 | p_ring_out.cmd_grant = (r_preempt && p_ring_in.cmd_grant) || (m_cmd_fifo.rok() && p_ring_in.cmd_r && (r_cpt_tgt.read() == m_nb_target - 1)); |
---|
633 | p_ring_out.cmd_w = m_cmd_fifo.rok(); |
---|
634 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
635 | } |
---|
636 | break; |
---|
637 | |
---|
638 | case SENDING: |
---|
639 | { |
---|
640 | bool eop = ((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1; |
---|
641 | p_ring_out.cmd_grant = m_cmd_fifo.rok() && p_ring_in.cmd_r && eop; |
---|
642 | |
---|
643 | // si on est dans cet état, c'est qu'on n'utilise pas le cmd_preempt mais le gnt. |
---|
644 | p_ring_out.cmd_preempt= 0; |
---|
645 | p_ring_out.cmd_header = 0; |
---|
646 | p_ring_out.cmd_palloc = 0; |
---|
647 | p_ring_out.cmd_w = m_cmd_fifo.rok(); |
---|
648 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
649 | } |
---|
650 | break; |
---|
651 | |
---|
652 | case PREEMPT: |
---|
653 | { |
---|
654 | |
---|
655 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
---|
656 | |
---|
657 | // palloc may have 2 values : |
---|
658 | // palloc = 2 : means Target Gate still allocated |
---|
659 | // global state for targets : TG TL0 TL1 TL2 ... TLn |
---|
660 | // A N N P2 N |
---|
661 | // A N N N N |
---|
662 | // palloc = 1 : means Target Gate free (not allocated) |
---|
663 | // global state for targets : TG TL0 TL1 TL2 ... TLn |
---|
664 | // A N N P2 N |
---|
665 | // N N N P1 N |
---|
666 | // I I I I I |
---|
667 | // TLi not allocated, in case of preempt and last flit, needs to test value of palloc |
---|
668 | // if palloc=1 => next state : IDLE (TG not allocated) |
---|
669 | // else (palloc2=2) => next state : NALLOC (TG still Allocated) |
---|
670 | p_ring_out.cmd_palloc = 1+(tga ? 1:0); |
---|
671 | |
---|
672 | p_ring_out.cmd_preempt = m_cmd_fifo.rok(); //&& tga; |
---|
673 | p_ring_out.cmd_header = 0; |
---|
674 | |
---|
675 | if ( m_cmd_fifo.rok() ) |
---|
676 | { |
---|
677 | p_ring_out.cmd_w = 1; //m_cmd_fifo.rok(); |
---|
678 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
679 | } |
---|
680 | else |
---|
681 | { |
---|
682 | // if init local has finished, tga = 0 |
---|
683 | // init gate remains the only initiator, then w = 0 |
---|
684 | p_ring_out.cmd_w = p_ring_in.cmd_w && tga; |
---|
685 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
---|
686 | } |
---|
687 | } |
---|
688 | break; |
---|
689 | |
---|
690 | } // end switch |
---|
691 | |
---|
692 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
---|
693 | |
---|
694 | p_ring_out.rsp_w = p_ring_in.rsp_w; |
---|
695 | p_ring_out.rsp_data = p_ring_in.rsp_data; |
---|
696 | |
---|
697 | p_ring_out.rsp_grant = p_ring_in.rsp_grant; |
---|
698 | |
---|
699 | p_ring_out.rsp_palloc = p_ring_in.rsp_palloc; |
---|
700 | p_ring_out.rsp_preempt = p_ring_in.rsp_preempt; |
---|
701 | p_ring_out.rsp_header = p_ring_in.rsp_header; |
---|
702 | |
---|
703 | |
---|
704 | switch( r_ring_rsp_fsm ) |
---|
705 | { |
---|
706 | case RSP_IDLE: |
---|
707 | { |
---|
708 | uint32_t rsrcid = (uint32_t) ((sc_dt::sc_uint<vci_param::S>) ((p_ring_in.rsp_data >> (ring_rsp_data_size-m_x_width-m_y_width - 1)) << (vci_param::S-m_x_width-m_y_width))); |
---|
709 | bool islocal = !m_lt[rsrcid]; |
---|
710 | |
---|
711 | iga = false; |
---|
712 | |
---|
713 | if(p_ring_in.rsp_w && islocal) |
---|
714 | p_ring_out.rsp_r = m_rsp_fifo.wok(); |
---|
715 | else |
---|
716 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
---|
717 | } |
---|
718 | break; |
---|
719 | |
---|
720 | case ALLOC: |
---|
721 | iga = true; |
---|
722 | |
---|
723 | if (!p_ring_in.rsp_preempt) |
---|
724 | p_ring_out.rsp_r = m_rsp_fifo.wok(); |
---|
725 | else |
---|
726 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
---|
727 | break; |
---|
728 | |
---|
729 | case NALLOC: |
---|
730 | iga = false; |
---|
731 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
---|
732 | break; |
---|
733 | } // end switch |
---|
734 | |
---|
735 | |
---|
736 | } // end update_ring_signals |
---|
737 | |
---|
738 | #ifdef HI_STATS |
---|
739 | void print_stats() { |
---|
740 | |
---|
741 | std::cout << m_name << " , " << m_cpt << " , " << flits_sent << " , " << tok_wait << " , " << fifo_full << " , " << preempt << " , " << wait_rok << std::endl; |
---|
742 | |
---|
743 | } |
---|
744 | #endif |
---|
745 | }; |
---|
746 | |
---|
747 | }} // end namespace |
---|
748 | |
---|
749 | #endif // DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
---|
750 | |
---|