1 | /* -*- c++ -*- |
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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 : March 2010 |
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24 | * |
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25 | * Copyright: UPMC - LIP6 |
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26 | */ |
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27 | #include <systemc> |
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28 | #include "vci_initiator.h" |
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29 | #include "generic_fifo.h" |
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30 | #include "mapping_table.h" |
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31 | #include "ring_signals_2.h" |
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32 | #include "gate_ports_2.h" |
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33 | |
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34 | //#define HT_DEBUG |
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35 | //#define HT_DEBUG_FSM |
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36 | |
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37 | namespace soclib { namespace caba { |
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38 | |
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39 | using soclib::common::IntTab; |
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40 | |
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41 | #ifdef HT_DEBUG_FSM |
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42 | namespace { |
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43 | const char *ring_rsp_fsm_state_str_ht[] = { |
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44 | "RSP_IDLE", |
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45 | "DEFAULT", |
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46 | "KEEP", |
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47 | }; |
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48 | const char *ring_cmd_fsm_state_str_ht[] = { |
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49 | "CMD_IDLE", |
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50 | "BROADCAST_0", |
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51 | "BROADCAST_1", |
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52 | "LOCAL", |
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53 | "RING", |
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54 | }; |
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55 | } |
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56 | #endif |
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57 | |
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58 | template<typename vci_param, int ring_cmd_data_size, int ring_rsp_data_size> |
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59 | class HalfGatewayTarget2 |
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60 | { |
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61 | |
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62 | typedef typename vci_param::fast_addr_t vci_addr_t; |
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63 | typedef RingSignals2 ring_signal_t; |
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64 | typedef soclib::caba::GateTarget2<ring_cmd_data_size, ring_rsp_data_size> gate_target_t; |
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65 | |
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66 | private: |
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67 | |
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68 | enum ring_cmd_fsm_state_e { |
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69 | CMD_IDLE, // waiting for first flit of a command packet |
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70 | BROADCAST_0, |
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71 | BROADCAST_1, |
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72 | LOCAL, // next flit of a local cmd packet |
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73 | RING, // next flit of a ring cmd packet |
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74 | }; |
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75 | |
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76 | // cmd token allocation fsm |
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77 | enum ring_rsp_fsm_state_e { |
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78 | RSP_IDLE, |
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79 | DEFAULT, |
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80 | KEEP, |
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81 | }; |
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82 | |
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83 | // structural parameters |
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84 | bool m_alloc_target; |
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85 | bool m_local; |
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86 | std::string m_name; |
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87 | |
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88 | // internal registers |
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89 | sc_signal<int> r_ring_cmd_fsm; // ring command packet FSM |
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90 | sc_signal<int> r_ring_rsp_fsm; // ring response packet FSM |
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91 | |
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92 | |
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93 | // internal fifos |
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94 | GenericFifo<uint64_t > m_cmd_fifo; // fifo for the local command paquet |
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95 | GenericFifo<uint64_t > m_rsp_fifo; // fifo for the local response paquet |
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96 | |
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97 | // locality table |
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98 | soclib::common::AddressDecodingTable<vci_addr_t, bool> m_lt; |
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99 | soclib::common::IntTab m_ringid; |
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100 | |
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101 | bool trace(int sc_time_stamp) |
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102 | { |
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103 | int time_stamp=0; |
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104 | char *ctime_stamp= getenv("FROM_CYCLE"); |
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105 | |
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106 | if (ctime_stamp) time_stamp=atoi(ctime_stamp); |
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107 | |
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108 | return sc_time_stamp >= time_stamp; |
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109 | |
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110 | } |
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111 | |
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112 | public : |
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113 | |
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114 | HalfGatewayTarget2( |
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115 | const char *name, |
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116 | bool alloc_target, |
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117 | const int &wrapper_fifo_depth, |
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118 | const soclib::common::MappingTable &mt, |
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119 | const soclib::common::IntTab &ringid, |
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120 | bool local) |
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121 | : m_name(name), |
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122 | m_alloc_target(alloc_target), |
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123 | m_cmd_fifo("m_cmd_fifo", wrapper_fifo_depth), |
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124 | m_rsp_fifo("m_rsp_fifo", wrapper_fifo_depth), |
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125 | m_lt(mt.getLocalityTable<typename vci_param::fast_addr_t>(ringid)), |
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126 | m_ringid(ringid), |
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127 | m_local(local), |
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128 | r_ring_cmd_fsm("r_ring_cmd_fsm"), |
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129 | r_ring_rsp_fsm("r_ring_rsp_fsm") |
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130 | { |
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131 | } // end constructor |
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132 | |
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133 | void reset() |
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134 | { |
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135 | if(m_alloc_target) |
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136 | r_ring_rsp_fsm = DEFAULT; |
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137 | else |
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138 | r_ring_rsp_fsm = RSP_IDLE; |
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139 | |
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140 | r_ring_cmd_fsm = CMD_IDLE; |
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141 | m_cmd_fifo.init(); |
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142 | m_rsp_fifo.init(); |
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143 | } |
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144 | //////////////////////////////// |
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145 | // transition |
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146 | //////////////////////////////// |
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147 | void transition(const gate_target_t &p_gate_target, const ring_signal_t p_ring_in) |
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148 | { |
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149 | |
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150 | // bool cmd_fifo_get = false; |
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151 | bool cmd_fifo_put = false; |
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152 | uint64_t cmd_fifo_data = 0; |
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153 | |
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154 | bool rsp_fifo_get = false; |
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155 | bool rsp_fifo_put = false; |
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156 | uint64_t rsp_fifo_data = 0; |
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157 | |
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158 | #ifdef HT_DEBUG_FSM |
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159 | if( trace(sc_time_stamp())) |
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160 | std::cout << sc_time_stamp() << " - " << m_name |
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161 | << " - ring cmd = " << ring_cmd_fsm_state_str_ht[r_ring_cmd_fsm] |
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162 | << " - ring rsp = " << ring_rsp_fsm_state_str_ht[r_ring_rsp_fsm] |
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163 | << std::endl; |
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164 | #endif |
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165 | |
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166 | //////////// VCI CMD FSM ///////////////////////// |
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167 | |
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168 | if (p_gate_target.rsp_rok.read()) { |
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169 | rsp_fifo_data = (uint64_t) p_gate_target.rsp_data.read(); |
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170 | rsp_fifo_put = m_rsp_fifo.wok(); |
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171 | } |
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172 | |
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173 | bool cmd_fifo_get = p_gate_target.cmd_wok.read(); |
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174 | |
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175 | //////////// RING RSP FSM (distributed) ///////////////////////// |
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176 | |
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177 | switch( r_ring_rsp_fsm ) |
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178 | { |
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179 | case RSP_IDLE: |
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180 | #ifdef HT_DEBUG |
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181 | if( trace(sc_time_stamp())) |
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182 | std::cout << sc_time_stamp() << " -- " << m_name << " -- ring_rsp_fsm : RSP_IDLE" |
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183 | << " -- fifo rok : " << m_rsp_fifo.rok() |
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184 | << " -- ring rok : " << p_ring_in.rsp_w |
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185 | << " -- ringin rsp grant : " << p_ring_in.rsp_grant |
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186 | << " -- fifo rsp data : " << std::hex << m_rsp_fifo.read() |
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187 | << std::endl; |
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188 | #endif |
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189 | if ( p_ring_in.rsp_grant && m_rsp_fifo.rok() ) |
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190 | |
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191 | r_ring_rsp_fsm = KEEP; |
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192 | |
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193 | break; |
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194 | |
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195 | case DEFAULT: |
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196 | #ifdef HT_DEBUG |
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197 | if( trace(sc_time_stamp())) |
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198 | std::cout << sc_time_stamp() << " -- " << m_name << " -- ring_rsp_fsm : DEFAULT " |
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199 | << " -- fifo_rsp_data : " << std::hex << m_rsp_fifo.read() |
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200 | << std::endl; |
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201 | #endif |
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202 | if ( m_rsp_fifo.rok()) // && p_ring_in.rsp_r ) |
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203 | { |
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204 | |
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205 | rsp_fifo_get = p_ring_in.rsp_r; //true; |
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206 | r_ring_rsp_fsm = KEEP; |
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207 | } |
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208 | else if ( !p_ring_in.rsp_grant ) |
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209 | r_ring_rsp_fsm = RSP_IDLE; |
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210 | break; |
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211 | |
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212 | case KEEP: |
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213 | |
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214 | if(m_rsp_fifo.rok() && p_ring_in.rsp_r) |
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215 | { |
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216 | #ifdef HT_DEBUG |
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217 | if( trace(sc_time_stamp())) |
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218 | std::cout << sc_time_stamp() << " -- " << m_name << " -- ring_rsp_fsm : KEEP " |
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219 | << " -- fifo_rok : " << m_rsp_fifo.rok() |
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220 | << " -- ring_in_wok : " << p_ring_in.rsp_r |
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221 | << " -- fifo_out_data : " << std::hex << m_rsp_fifo.read() |
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222 | << std::endl; |
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223 | #endif |
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224 | rsp_fifo_get = true; |
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225 | if ((int) ((m_rsp_fifo.read() >> 32 ) & 0x1) == 1) |
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226 | { |
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227 | if ( p_ring_in.rsp_grant ) |
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228 | r_ring_rsp_fsm = DEFAULT; |
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229 | else |
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230 | r_ring_rsp_fsm = RSP_IDLE; |
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231 | } |
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232 | } |
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233 | break; |
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234 | |
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235 | } // end switch ring cmd fsm |
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236 | |
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237 | /////////// RING CMD FSM //////////////////////// |
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238 | switch( r_ring_cmd_fsm ) |
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239 | { |
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240 | |
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241 | case CMD_IDLE: |
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242 | { |
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243 | vci_addr_t rtgtid = (vci_addr_t) ((p_ring_in.cmd_data >> 1) << 2); |
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244 | int cluster = (int) (p_ring_in.cmd_data >> 24) & 0xF; // a voir FF |
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245 | bool brdcst = (IntTab(cluster) == m_ringid) && ((p_ring_in.cmd_data & 0x1) == 0X1) ; |
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246 | bool loc = !((p_ring_in.cmd_data & 0x1) == 0x1) && !m_lt[rtgtid] && !m_local; |
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247 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
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248 | |
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249 | #ifdef HT_DEBUG |
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250 | if( trace(sc_time_stamp())) { |
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251 | std::cout << sc_time_stamp() << " -- " << m_name |
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252 | << " -- ring_cmd_fsm -- CMD_IDLE " |
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253 | << " - in rok : " << p_ring_in.cmd_w |
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254 | << " - addr : " << std::hex << rtgtid |
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255 | << " - brdcst : " << brdcst |
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256 | << " - eop : " << eop |
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257 | << " - isloc : " << loc |
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258 | << " - in wok : " << p_ring_in.cmd_r |
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259 | << " - fifo wok : " << m_cmd_fifo.wok() |
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260 | << " - ringid : " << m_ringid |
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261 | << " - cluster : " << cluster |
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262 | << " - intTab : " << IntTab(cluster) |
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263 | << std::endl; |
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264 | } |
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265 | #endif |
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266 | if(p_ring_in.cmd_w && !eop && brdcst && !m_cmd_fifo.wok()) { |
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267 | r_ring_cmd_fsm = BROADCAST_0; |
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268 | } |
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269 | |
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270 | if(p_ring_in.cmd_w && !eop && brdcst && m_cmd_fifo.wok()) { |
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271 | r_ring_cmd_fsm = BROADCAST_1; |
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272 | cmd_fifo_put = true; |
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273 | cmd_fifo_data = p_ring_in.cmd_data; |
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274 | |
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275 | } |
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276 | |
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277 | if (p_ring_in.cmd_w && !eop && !brdcst && loc) { |
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278 | r_ring_cmd_fsm = LOCAL; |
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279 | cmd_fifo_put = m_cmd_fifo.wok(); |
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280 | cmd_fifo_data = p_ring_in.cmd_data; |
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281 | |
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282 | } |
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283 | |
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284 | if (p_ring_in.cmd_w && !eop && !brdcst && !loc) { |
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285 | r_ring_cmd_fsm = RING; |
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286 | } |
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287 | |
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288 | if (!p_ring_in.cmd_w || eop) { |
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289 | r_ring_cmd_fsm = CMD_IDLE; |
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290 | } |
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291 | |
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292 | } |
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293 | |
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294 | break; |
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295 | |
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296 | case BROADCAST_0: |
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297 | |
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298 | #ifdef HT_DEBUG |
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299 | if( trace(sc_time_stamp())) |
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300 | std::cout << sc_time_stamp() << " -- " << m_name |
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301 | << " -- ring_cmd_fsm -- BROADCAST_0 " |
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302 | << " -- ringin cmd rok : " << p_ring_in.cmd_w |
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303 | << " -- ringin cmd wok : " << p_ring_in.cmd_r |
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304 | << " -- ringin data : " << std::hex << p_ring_in.cmd_data |
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305 | << " -- fifo cmd wok : " << m_cmd_fifo.wok() |
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306 | << std::endl; |
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307 | #endif |
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308 | if ( m_cmd_fifo.wok() ) |
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309 | { |
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310 | cmd_fifo_data = p_ring_in.cmd_data; |
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311 | r_ring_cmd_fsm = BROADCAST_1; |
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312 | |
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313 | } else { |
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314 | r_ring_cmd_fsm = BROADCAST_0; |
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315 | } |
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316 | |
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317 | break; |
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318 | |
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319 | case BROADCAST_1: |
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320 | { |
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321 | #ifdef HT_DEBUG |
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322 | if( trace(sc_time_stamp())) |
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323 | std::cout << sc_time_stamp() << " -- " << m_name |
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324 | << " -- ring_cmd_fsm -- BROADCAST_1 " |
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325 | << " -- ringin cmd rok : " << p_ring_in.cmd_w |
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326 | << " -- ringin cmd wok : " << p_ring_in.cmd_r |
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327 | << " -- ringin data : " << std::hex << p_ring_in.cmd_data |
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328 | << " -- fifo cmd wok : " << m_cmd_fifo.wok() |
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329 | << std::endl; |
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330 | #endif |
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331 | |
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332 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
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333 | |
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334 | if ( p_ring_in.cmd_w && m_cmd_fifo.wok() && eop ) |
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335 | { |
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336 | cmd_fifo_data = p_ring_in.cmd_data; |
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337 | cmd_fifo_put = 1; |
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338 | r_ring_cmd_fsm = CMD_IDLE; |
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339 | |
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340 | } |
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341 | else { |
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342 | r_ring_cmd_fsm = BROADCAST_1; |
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343 | } |
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344 | |
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345 | } |
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346 | break; |
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347 | |
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348 | case LOCAL: |
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349 | { |
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350 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
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351 | #ifdef HT_DEBUG |
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352 | if( trace(sc_time_stamp())) |
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353 | std::cout << sc_time_stamp() << " -- " << m_name |
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354 | << " -- ring_cmd_fsm -- LOCAL " |
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355 | << " -- in cmd rok : " << p_ring_in.cmd_w |
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356 | << " -- in cmd wok : " << p_ring_in.cmd_r |
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357 | << " -- in data : " << std::hex << p_ring_in.cmd_data |
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358 | << " -- fifo wok : " << m_cmd_fifo.wok() |
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359 | << " -- eop : " << eop |
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360 | << std::endl; |
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361 | #endif |
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362 | |
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363 | if ( p_ring_in.cmd_w && m_cmd_fifo.wok() && eop ) |
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364 | { |
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365 | |
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366 | cmd_fifo_put = true; |
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367 | cmd_fifo_data = p_ring_in.cmd_data; |
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368 | r_ring_cmd_fsm = CMD_IDLE; |
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369 | |
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370 | } |
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371 | |
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372 | if ( !p_ring_in.cmd_w || !m_cmd_fifo.wok() || !eop ) |
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373 | { |
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374 | |
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375 | cmd_fifo_put = p_ring_in.cmd_w && m_cmd_fifo.wok(); |
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376 | cmd_fifo_data = p_ring_in.cmd_data; |
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377 | r_ring_cmd_fsm = LOCAL; |
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378 | |
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379 | } |
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380 | } |
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381 | break; |
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382 | |
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383 | case RING: |
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384 | { |
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385 | |
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386 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
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387 | #ifdef HT_DEBUG |
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388 | if( trace(sc_time_stamp())) |
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389 | std::cout << sc_time_stamp() << " -- " << m_name |
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390 | << " -- ring_cmd_fsm -- RING " |
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391 | << " -- in cmd rok : " << p_ring_in.cmd_w |
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392 | << " -- in data : " << std::hex << p_ring_in.cmd_data |
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393 | << " -- in wok : " << p_ring_in.cmd_r |
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394 | << " -- eop : " << eop |
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395 | |
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396 | << std::endl; |
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397 | #endif |
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398 | |
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399 | if ( p_ring_in.cmd_w && eop ) { |
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400 | r_ring_cmd_fsm = CMD_IDLE; |
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401 | } |
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402 | else { |
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403 | r_ring_cmd_fsm = RING; |
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404 | } |
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405 | } |
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406 | break; |
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407 | } // end switch cmd fsm |
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408 | |
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409 | //////////////////////// |
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410 | // fifos update // |
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411 | //////////////////////// |
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412 | |
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413 | // local cmd fifo update |
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414 | if ( cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.put_and_get(cmd_fifo_data); |
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415 | else if ( cmd_fifo_put && !cmd_fifo_get ) m_cmd_fifo.simple_put(cmd_fifo_data); |
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416 | else if ( !cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.simple_get(); |
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417 | // local rsp fifo update |
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418 | if ( rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.put_and_get(rsp_fifo_data); |
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419 | else if ( rsp_fifo_put && !rsp_fifo_get ) m_rsp_fifo.simple_put(rsp_fifo_data); |
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420 | else if ( !rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.simple_get(); |
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421 | |
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422 | } // end Transition() |
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423 | |
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424 | /////////////////////////////////////////////////////////////////// |
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425 | void genMoore(gate_target_t &p_gate_target) |
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426 | /////////////////////////////////////////////////////////////////// |
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427 | { |
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428 | p_gate_target.cmd_w = m_cmd_fifo.rok(); |
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429 | p_gate_target.cmd_data = (sc_uint<ring_cmd_data_size>) m_cmd_fifo.read(); |
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430 | |
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431 | p_gate_target.rsp_r= m_rsp_fifo.wok(); |
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432 | |
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433 | } // end genMoore |
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434 | |
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435 | /////////////////////////////////////////////////////////////////// |
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436 | void update_ring_signals(ring_signal_t p_ring_in, ring_signal_t &p_ring_out) |
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437 | /////////////////////////////////////////////////////////////////// |
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438 | { |
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439 | |
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440 | switch( r_ring_rsp_fsm ) |
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441 | { |
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442 | case RSP_IDLE: |
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443 | p_ring_out.rsp_grant = p_ring_in.rsp_grant && !m_rsp_fifo.rok(); |
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444 | |
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445 | p_ring_out.rsp_w = p_ring_in.rsp_w; |
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446 | p_ring_out.rsp_data = p_ring_in.rsp_data; |
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447 | |
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448 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
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449 | break; |
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450 | |
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451 | case DEFAULT: |
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452 | p_ring_out.rsp_grant = !( m_rsp_fifo.rok()); |
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453 | |
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454 | p_ring_out.rsp_w = m_rsp_fifo.rok(); |
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455 | p_ring_out.rsp_data = m_rsp_fifo.read(); |
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456 | |
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457 | p_ring_out.rsp_r = 1; |
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458 | break; |
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459 | |
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460 | case KEEP: |
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461 | int rsp_fifo_eop = (int) ((m_rsp_fifo.read() >> 32) & 0x1); |
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462 | p_ring_out.rsp_grant = m_rsp_fifo.rok() && p_ring_in.rsp_r && (rsp_fifo_eop == 1); |
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463 | |
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464 | p_ring_out.rsp_w = m_rsp_fifo.rok(); |
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465 | p_ring_out.rsp_data = m_rsp_fifo.read(); |
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466 | |
---|
467 | p_ring_out.rsp_r = 1; |
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468 | |
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469 | break; |
---|
470 | |
---|
471 | } // end switch |
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472 | |
---|
473 | p_ring_out.cmd_w = p_ring_in.cmd_w; |
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474 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
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475 | |
---|
476 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
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477 | |
---|
478 | switch( r_ring_cmd_fsm ) |
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479 | { |
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480 | case CMD_IDLE: |
---|
481 | { |
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482 | |
---|
483 | vci_addr_t rtgtid = (vci_addr_t) ((p_ring_in.cmd_data >> 1) << 2); |
---|
484 | int cluster = (int) (p_ring_in.cmd_data >> 24) & 0xF; // a voir FF |
---|
485 | bool brdcst = (IntTab(cluster) == m_ringid) && ((p_ring_in.cmd_data & 0x1) == 0X1) ; |
---|
486 | bool loc = !((p_ring_in.cmd_data & 0x1) == 0x1) && !m_lt[rtgtid] && !m_local; |
---|
487 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
488 | |
---|
489 | if(p_ring_in.cmd_w && !eop && brdcst && !m_cmd_fifo.wok()) { |
---|
490 | p_ring_out.cmd_r = m_cmd_fifo.wok() && p_ring_in.cmd_r; |
---|
491 | } |
---|
492 | if(p_ring_in.cmd_w && !eop && brdcst && m_cmd_fifo.wok()) { |
---|
493 | p_ring_out.cmd_r = m_cmd_fifo.wok() && p_ring_in.cmd_r; |
---|
494 | |
---|
495 | } |
---|
496 | if (p_ring_in.cmd_w && !eop && !brdcst && loc) { |
---|
497 | p_ring_out.cmd_r = m_cmd_fifo.wok(); |
---|
498 | |
---|
499 | } |
---|
500 | if (p_ring_in.cmd_w && !eop && !brdcst && !loc) { |
---|
501 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
---|
502 | } |
---|
503 | |
---|
504 | if (!p_ring_in.cmd_w || eop) { |
---|
505 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
---|
506 | } |
---|
507 | } |
---|
508 | break; |
---|
509 | case BROADCAST_0: |
---|
510 | p_ring_out.cmd_r = m_cmd_fifo.wok() && p_ring_in.cmd_r; |
---|
511 | break; |
---|
512 | |
---|
513 | case BROADCAST_1: |
---|
514 | p_ring_out.cmd_r = m_cmd_fifo.wok() && p_ring_in.cmd_r; |
---|
515 | break; |
---|
516 | |
---|
517 | case LOCAL: |
---|
518 | |
---|
519 | p_ring_out.cmd_r = m_cmd_fifo.wok(); |
---|
520 | break; |
---|
521 | |
---|
522 | case RING: |
---|
523 | |
---|
524 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
---|
525 | break; |
---|
526 | |
---|
527 | } // end switch |
---|
528 | |
---|
529 | } // end update_ring_signals |
---|
530 | |
---|
531 | }; |
---|
532 | |
---|
533 | }} // end namespace |
---|
534 | |
---|
535 | |
---|