1 | /* -*- c++ -*- |
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2 | * File : vci_mem_cache_v4.cpp |
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3 | * Date : 30/10/2008 |
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4 | * Copyright : UPMC / LIP6 |
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5 | * Authors : Alain Greiner / Eric Guthmuller |
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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 | * Maintainers: alain eric.guthmuller@polytechnique.edu |
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28 | */ |
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29 | |
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30 | #include "../include/vci_mem_cache_v4.h" |
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31 | |
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32 | ////// debug services /////////////////////////////////////////////////////// |
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33 | // All debug messages are conditionned by two variables: |
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34 | // - compile time : DEBUG_MEMC_*** : defined below |
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35 | // - execution time : m_debug_*** : defined by constructor arguments |
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36 | // m_debug_* = (m_debug_ok) and (m_cpt_cycle > m_debug_start_cycle) |
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37 | ///////////////////////////////////////////////////////////////////////////////// |
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38 | |
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39 | #define DEBUG_MEMC_GLOBAL 0 // synthetic trace of all FSMs |
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40 | #define DEBUG_MEMC_READ 1 // detailed trace of READ FSM |
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41 | #define DEBUG_MEMC_WRITE 1 // detailed trace of WRITE FSM |
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42 | #define DEBUG_MEMC_SC 1 // detailed trace of SC FSM |
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43 | #define DEBUG_MEMC_IXR_CMD 1 // detailed trace of IXR_RSP FSM |
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44 | #define DEBUG_MEMC_IXR_RSP 1 // detailed trace of IXR_RSP FSM |
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45 | #define DEBUG_MEMC_XRAM_RSP 1 // detailed trace of XRAM_RSP FSM |
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46 | #define DEBUG_MEMC_INIT_CMD 1 // detailed trace of INIT_CMD FSM |
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47 | #define DEBUG_MEMC_INIT_RSP 1 // detailed trace of INIT_RSP FSM |
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48 | #define DEBUG_MEMC_TGT_CMD 1 // detailed trace of TGT_CMD FSM |
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49 | #define DEBUG_MEMC_TGT_RSP 1 // detailed trace of TGT_RSP FSM |
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50 | #define DEBUG_MEMC_CLEANUP 1 // detailed trace of CLEANUP FSM |
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51 | |
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52 | #define RANDOMIZE_SC 1 |
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53 | |
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54 | namespace soclib { namespace caba { |
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55 | |
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56 | const char *tgt_cmd_fsm_str[] = { |
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57 | "TGT_CMD_IDLE", |
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58 | "TGT_CMD_READ", |
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59 | "TGT_CMD_WRITE", |
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60 | "TGT_CMD_ATOMIC", |
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61 | }; |
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62 | const char *tgt_rsp_fsm_str[] = { |
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63 | "TGT_RSP_READ_IDLE", |
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64 | "TGT_RSP_WRITE_IDLE", |
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65 | "TGT_RSP_SC_IDLE", |
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66 | "TGT_RSP_XRAM_IDLE", |
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67 | "TGT_RSP_INIT_IDLE", |
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68 | "TGT_RSP_CLEANUP_IDLE", |
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69 | "TGT_RSP_READ", |
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70 | "TGT_RSP_WRITE", |
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71 | "TGT_RSP_SC", |
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72 | "TGT_RSP_XRAM", |
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73 | "TGT_RSP_INIT", |
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74 | "TGT_RSP_CLEANUP", |
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75 | }; |
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76 | const char *init_cmd_fsm_str[] = { |
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77 | "INIT_CMD_INVAL_IDLE", |
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78 | "INIT_CMD_INVAL_NLINE", |
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79 | "INIT_CMD_XRAM_BRDCAST", |
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80 | "INIT_CMD_UPDT_IDLE", |
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81 | "INIT_CMD_WRITE_BRDCAST", |
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82 | "INIT_CMD_UPDT_NLINE", |
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83 | "INIT_CMD_UPDT_INDEX", |
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84 | "INIT_CMD_UPDT_DATA", |
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85 | "INIT_CMD_SC_UPDT_IDLE", |
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86 | "INIT_CMD_SC_BRDCAST", |
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87 | "INIT_CMD_SC_UPDT_NLINE", |
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88 | "INIT_CMD_SC_UPDT_INDEX", |
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89 | "INIT_CMD_SC_UPDT_DATA", |
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90 | "INIT_CMD_SC_UPDT_DATA_HIGH", |
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91 | }; |
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92 | const char *init_rsp_fsm_str[] = { |
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93 | "INIT_RSP_IDLE", |
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94 | "INIT_RSP_UPT_LOCK", |
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95 | "INIT_RSP_UPT_CLEAR", |
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96 | "INIT_RSP_END", |
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97 | }; |
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98 | const char *read_fsm_str[] = { |
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99 | "READ_IDLE", |
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100 | "READ_DIR_LOCK", |
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101 | "READ_DIR_HIT", |
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102 | "READ_HEAP_LOCK", |
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103 | "READ_HEAP_WRITE", |
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104 | "READ_HEAP_ERASE", |
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105 | "READ_HEAP_LAST", |
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106 | "READ_RSP", |
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107 | "READ_TRT_LOCK", |
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108 | "READ_TRT_SET", |
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109 | "READ_TRT_REQ", |
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110 | }; |
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111 | const char *write_fsm_str[] = { |
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112 | "WRITE_IDLE", |
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113 | "WRITE_NEXT", |
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114 | "WRITE_DIR_LOCK", |
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115 | "WRITE_DIR_READ", |
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116 | "WRITE_DIR_HIT", |
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117 | "WRITE_UPT_LOCK", |
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118 | "WRITE_UPT_HEAP_LOCK", |
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119 | "WRITE_UPT_REQ", |
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120 | "WRITE_UPT_NEXT", |
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121 | "WRITE_UPT_DEC", |
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122 | "WRITE_RSP", |
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123 | "WRITE_MISS_TRT_LOCK", |
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124 | "WRITE_MISS_TRT_DATA", |
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125 | "WRITE_MISS_TRT_SET", |
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126 | "WRITE_MISS_XRAM_REQ", |
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127 | "WRITE_BC_TRT_LOCK", |
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128 | "WRITE_BC_UPT_LOCK", |
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129 | "WRITE_BC_DIR_INVAL", |
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130 | "WRITE_BC_CC_SEND", |
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131 | "WRITE_BC_XRAM_REQ", |
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132 | "WRITE_WAIT", |
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133 | }; |
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134 | const char *ixr_rsp_fsm_str[] = { |
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135 | "IXR_RSP_IDLE", |
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136 | "IXR_RSP_ACK", |
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137 | "IXR_RSP_TRT_ERASE", |
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138 | "IXR_RSP_TRT_READ", |
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139 | }; |
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140 | const char *xram_rsp_fsm_str[] = { |
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141 | "XRAM_RSP_IDLE", |
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142 | "XRAM_RSP_TRT_COPY", |
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143 | "XRAM_RSP_TRT_DIRTY", |
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144 | "XRAM_RSP_DIR_LOCK", |
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145 | "XRAM_RSP_DIR_UPDT", |
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146 | "XRAM_RSP_DIR_RSP", |
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147 | "XRAM_RSP_INVAL_LOCK", |
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148 | "XRAM_RSP_INVAL_WAIT", |
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149 | "XRAM_RSP_INVAL", |
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150 | "XRAM_RSP_WRITE_DIRTY", |
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151 | "XRAM_RSP_HEAP_ERASE", |
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152 | "XRAM_RSP_HEAP_LAST", |
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153 | "XRAM_RSP_ERROR_ERASE", |
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154 | "XRAM_RSP_ERROR_RSP", |
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155 | }; |
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156 | const char *ixr_cmd_fsm_str[] = { |
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157 | "IXR_CMD_READ_IDLE", |
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158 | "IXR_CMD_WRITE_IDLE", |
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159 | "IXR_CMD_SC_IDLE", |
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160 | "IXR_CMD_XRAM_IDLE", |
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161 | "IXR_CMD_READ_NLINE", |
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162 | "IXR_CMD_WRITE_NLINE", |
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163 | "IXR_CMD_SC_NLINE", |
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164 | "IXR_CMD_XRAM_DATA", |
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165 | }; |
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166 | const char *sc_fsm_str[] = { |
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167 | "SC_IDLE", |
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168 | "SC_DIR_LOCK", |
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169 | "SC_DIR_HIT_READ", |
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170 | "SC_DIR_HIT_WRITE", |
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171 | "SC_UPT_LOCK", |
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172 | "SC_UPT_HEAP_LOCK", |
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173 | "SC_UPT_REQ", |
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174 | "SC_UPT_NEXT", |
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175 | "SC_BC_TRT_LOCK", |
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176 | "SC_BC_UPT_LOCK", |
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177 | "SC_BC_DIR_INVAL", |
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178 | "SC_BC_CC_SEND", |
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179 | "SC_BC_XRAM_REQ", |
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180 | "SC_RSP_FAIL", |
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181 | "SC_RSP_SUCCESS", |
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182 | "SC_MISS_TRT_LOCK", |
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183 | "SC_MISS_TRT_SET", |
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184 | "SC_MISS_XRAM_REQ", |
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185 | "SC_WAIT", |
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186 | }; |
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187 | const char *cleanup_fsm_str[] = { |
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188 | "CLEANUP_IDLE", |
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189 | "CLEANUP_DIR_LOCK", |
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190 | "CLEANUP_DIR_WRITE", |
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191 | "CLEANUP_HEAP_LOCK", |
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192 | "CLEANUP_HEAP_SEARCH", |
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193 | "CLEANUP_HEAP_CLEAN", |
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194 | "CLEANUP_HEAP_FREE", |
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195 | "CLEANUP_UPT_LOCK", |
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196 | "CLEANUP_UPT_WRITE", |
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197 | "CLEANUP_WRITE_RSP", |
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198 | "CLEANUP_RSP", |
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199 | }; |
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200 | const char *alloc_dir_fsm_str[] = { |
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201 | "ALLOC_DIR_READ", |
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202 | "ALLOC_DIR_WRITE", |
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203 | "ALLOC_DIR_SC", |
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204 | "ALLOC_DIR_CLEANUP", |
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205 | "ALLOC_DIR_XRAM_RSP", |
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206 | }; |
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207 | const char *alloc_trt_fsm_str[] = { |
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208 | "ALLOC_TRT_READ", |
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209 | "ALLOC_TRT_WRITE", |
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210 | "ALLOC_TRT_SC", |
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211 | "ALLOC_TRT_XRAM_RSP", |
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212 | "ALLOC_TRT_IXR_RSP", |
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213 | }; |
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214 | const char *alloc_upt_fsm_str[] = { |
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215 | "ALLOC_UPT_WRITE", |
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216 | "ALLOC_UPT_XRAM_RSP", |
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217 | "ALLOC_UPT_INIT_RSP", |
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218 | "ALLOC_UPT_CLEANUP", |
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219 | }; |
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220 | const char *alloc_heap_fsm_str[] = { |
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221 | "ALLOC_HEAP_READ", |
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222 | "ALLOC_HEAP_WRITE", |
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223 | "ALLOC_HEAP_SC", |
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224 | "ALLOC_HEAP_CLEANUP", |
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225 | "ALLOC_HEAP_XRAM_RSP", |
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226 | }; |
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227 | |
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228 | #define tmpl(x) template<typename vci_param> x VciMemCacheV4<vci_param> |
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229 | |
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230 | using soclib::common::uint32_log2; |
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231 | |
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232 | //////////////////////////////// |
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233 | // Constructor |
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234 | //////////////////////////////// |
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235 | |
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236 | tmpl(/**/)::VciMemCacheV4( |
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237 | sc_module_name name, |
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238 | const soclib::common::MappingTable &mtp, |
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239 | const soclib::common::MappingTable &mtc, |
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240 | const soclib::common::MappingTable &mtx, |
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241 | const soclib::common::IntTab &vci_ixr_index, |
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242 | const soclib::common::IntTab &vci_ini_index, |
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243 | const soclib::common::IntTab &vci_tgt_index, |
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244 | const soclib::common::IntTab &vci_tgt_index_cleanup, |
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245 | size_t nways, // number of ways per set |
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246 | size_t nsets, // number of cache sets |
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247 | size_t nwords, // number of words in cache line |
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248 | size_t heap_size, // number of heap entries |
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249 | size_t transaction_tab_lines, // number of TRT entries |
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250 | size_t update_tab_lines, // number of UPT entries |
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251 | size_t debug_start_cycle, |
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252 | bool debug_ok) |
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253 | |
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254 | : soclib::caba::BaseModule(name), |
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255 | |
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256 | m_debug_start_cycle( debug_start_cycle), |
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257 | m_debug_ok ( debug_ok ), |
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258 | |
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259 | p_clk("clk"), |
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260 | p_resetn("resetn"), |
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261 | p_vci_tgt("vci_tgt"), |
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262 | p_vci_tgt_cleanup("vci_tgt_cleanup"), |
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263 | p_vci_ini("vci_ini"), |
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264 | p_vci_ixr("vci_ixr"), |
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265 | |
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266 | m_initiators( 1 << vci_param::S ), |
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267 | m_heap_size( heap_size ), |
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268 | m_ways( nways ), |
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269 | m_sets( nsets ), |
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270 | m_words( nwords ), |
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271 | m_srcid_ixr( mtx.indexForId(vci_ixr_index) ), |
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272 | m_srcid_ini( mtc.indexForId(vci_ini_index) ), |
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273 | m_seglist(mtp.getSegmentList(vci_tgt_index)), |
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274 | m_cseglist(mtc.getSegmentList(vci_tgt_index_cleanup)), |
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275 | m_coherence_table( mtc.getCoherenceTable<vci_addr_t>() ), |
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276 | m_transaction_tab_lines(transaction_tab_lines), |
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277 | m_transaction_tab( transaction_tab_lines, nwords ), |
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278 | m_update_tab_lines( update_tab_lines), |
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279 | m_update_tab( update_tab_lines ), |
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280 | m_cache_directory( nways, nsets, nwords, vci_param::N ), |
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281 | m_heap( m_heap_size ), |
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282 | |
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283 | #define L2 soclib::common::uint32_log2 |
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284 | m_x( L2(m_words), 2), |
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285 | m_y( L2(m_sets), L2(m_words) + 2), |
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286 | m_z( vci_param::N - L2(m_sets) - L2(m_words) - 2, L2(m_sets) + L2(m_words) + 2), |
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287 | m_nline( vci_param::N - L2(m_words) - 2, L2(m_words) + 2), |
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288 | #undef L2 |
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289 | |
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290 | // FIFOs |
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291 | |
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292 | m_cmd_read_addr_fifo("m_cmd_read_addr_fifo", 4), |
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293 | m_cmd_read_length_fifo("m_cmd_read_length_fifo", 4), |
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294 | m_cmd_read_srcid_fifo("m_cmd_read_srcid_fifo", 4), |
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295 | m_cmd_read_trdid_fifo("m_cmd_read_trdid_fifo", 4), |
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296 | m_cmd_read_pktid_fifo("m_cmd_read_pktid_fifo", 4), |
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297 | |
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298 | m_cmd_write_addr_fifo("m_cmd_write_addr_fifo",8), |
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299 | m_cmd_write_eop_fifo("m_cmd_write_eop_fifo",8), |
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300 | m_cmd_write_srcid_fifo("m_cmd_write_srcid_fifo",8), |
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301 | m_cmd_write_trdid_fifo("m_cmd_write_trdid_fifo",8), |
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302 | m_cmd_write_pktid_fifo("m_cmd_write_pktid_fifo",8), |
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303 | m_cmd_write_data_fifo("m_cmd_write_data_fifo",8), |
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304 | m_cmd_write_be_fifo("m_cmd_write_be_fifo",8), |
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305 | |
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306 | m_cmd_sc_addr_fifo("m_cmd_sc_addr_fifo",4), |
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307 | m_cmd_sc_eop_fifo("m_cmd_sc_eop_fifo",4), |
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308 | m_cmd_sc_srcid_fifo("m_cmd_sc_srcid_fifo",4), |
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309 | m_cmd_sc_trdid_fifo("m_cmd_sc_trdid_fifo",4), |
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310 | m_cmd_sc_pktid_fifo("m_cmd_sc_pktid_fifo",4), |
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311 | m_cmd_sc_wdata_fifo("m_cmd_sc_wdata_fifo",4), |
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312 | |
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313 | r_tgt_cmd_fsm("r_tgt_cmd_fsm"), |
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314 | |
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315 | m_nseg(0), |
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316 | m_ncseg(0), |
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317 | |
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318 | r_read_fsm("r_read_fsm"), |
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319 | |
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320 | r_write_fsm("r_write_fsm"), |
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321 | |
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322 | m_write_to_init_cmd_inst_fifo("m_write_to_init_cmd_inst_fifo",8), |
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323 | m_write_to_init_cmd_srcid_fifo("m_write_to_init_cmd_srcid_fifo",8), |
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324 | #if L1_MULTI_CACHE |
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325 | m_write_to_init_cmd_cache_id_fifo("m_write_to_init_cmd_cache_id_fifo",8), |
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326 | #endif |
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327 | |
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328 | r_init_rsp_fsm("r_init_rsp_fsm"), |
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329 | r_cleanup_fsm("r_cleanup_fsm"), |
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330 | |
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331 | r_sc_fsm("r_sc_fsm"), |
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332 | |
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333 | m_sc_to_init_cmd_inst_fifo("m_sc_to_init_cmd_inst_fifo",8), |
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334 | m_sc_to_init_cmd_srcid_fifo("m_sc_to_init_cmd_srcid_fifo",8), |
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335 | #if L1_MULTI_CACHE |
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336 | m_sc_to_init_cmd_cache_id_fifo("m_sc_to_init_cmd_cache_id_fifo",8), |
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337 | #endif |
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338 | |
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339 | r_ixr_rsp_fsm("r_ixr_rsp_fsm"), |
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340 | r_xram_rsp_fsm("r_xram_rsp_fsm"), |
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341 | |
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342 | m_xram_rsp_to_init_cmd_inst_fifo("m_xram_rsp_to_init_cmd_inst_fifo",8), |
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343 | m_xram_rsp_to_init_cmd_srcid_fifo("m_xram_rsp_to_init_cmd_srcid_fifo",8), |
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344 | #if L1_MULTI_CACHE |
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345 | m_xram_rsp_to_init_cmd_cache_id_fifo("m_xram_rsp_to_init_cmd_cache_id_fifo",8), |
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346 | #endif |
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347 | |
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348 | r_ixr_cmd_fsm("r_ixr_cmd_fsm"), |
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349 | |
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350 | r_tgt_rsp_fsm("r_tgt_rsp_fsm"), |
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351 | |
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352 | r_init_cmd_fsm("r_init_cmd_fsm"), |
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353 | |
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354 | r_alloc_dir_fsm("r_alloc_dir_fsm"), |
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355 | r_alloc_trt_fsm("r_alloc_trt_fsm"), |
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356 | r_alloc_upt_fsm("r_alloc_upt_fsm") |
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357 | |
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358 | { |
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359 | assert(IS_POW_OF_2(nsets)); |
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360 | assert(IS_POW_OF_2(nwords)); |
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361 | assert(IS_POW_OF_2(nways)); |
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362 | assert(nsets); |
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363 | assert(nwords); |
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364 | assert(nways); |
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365 | |
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366 | // check Transaction table size |
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367 | assert( (uint32_log2(transaction_tab_lines) <= vci_param::T) and |
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368 | "Need more bits for VCI TRDID field"); |
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369 | |
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370 | // Set the broadcast address with Xmin,Xmax,Ymin,Ymax set to maximum |
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371 | m_broadcast_address = 0x3 | (0x7C1F << (vci_param::N-20)); |
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372 | |
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373 | // Get the segments associated to the MemCache |
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374 | std::list<soclib::common::Segment>::iterator seg; |
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375 | size_t i; |
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376 | |
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377 | for(seg = m_seglist.begin(); seg != m_seglist.end() ; seg++) { |
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378 | m_nseg++; |
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379 | } |
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380 | for(seg = m_cseglist.begin(); seg != m_cseglist.end() ; seg++) { |
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381 | m_ncseg++; |
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382 | } |
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383 | |
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384 | m_seg = new soclib::common::Segment*[m_nseg]; |
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385 | |
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386 | i = 0; |
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387 | for ( seg = m_seglist.begin() ; seg != m_seglist.end() ; seg++ ) { |
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388 | m_seg[i] = &(*seg); |
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389 | i++; |
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390 | } |
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391 | |
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392 | m_cseg = new soclib::common::Segment*[m_ncseg]; |
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393 | |
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394 | i = 0; |
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395 | for ( seg = m_cseglist.begin() ; seg != m_cseglist.end() ; seg++ ) { |
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396 | m_cseg[i] = &(*seg); |
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397 | i++; |
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398 | } |
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399 | |
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400 | // Memory cache allocation & initialisation |
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401 | m_cache_data = new data_t**[nways]; |
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402 | for ( size_t i=0 ; i<nways ; ++i ) { |
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403 | m_cache_data[i] = new data_t*[nsets]; |
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404 | } |
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405 | for ( size_t i=0; i<nways; ++i ) { |
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406 | for ( size_t j=0; j<nsets; ++j ) { |
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407 | m_cache_data[i][j] = new data_t[nwords]; |
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408 | for ( size_t k=0; k<nwords; k++){ |
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409 | m_cache_data[i][j][k]=0; |
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410 | } |
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411 | } |
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412 | } |
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413 | |
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414 | // Allocation for IXR_RSP FSM |
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415 | r_ixr_rsp_to_xram_rsp_rok = new sc_signal<bool>[m_transaction_tab_lines]; |
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416 | |
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417 | // Allocation for XRAM_RSP FSM |
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418 | r_xram_rsp_victim_data = new sc_signal<data_t>[nwords]; |
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419 | r_xram_rsp_to_tgt_rsp_data = new sc_signal<data_t>[nwords]; |
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420 | r_xram_rsp_to_ixr_cmd_data = new sc_signal<data_t>[nwords]; |
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421 | |
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422 | // Allocation for READ FSM |
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423 | r_read_data = new sc_signal<data_t>[nwords]; |
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424 | r_read_to_tgt_rsp_data = new sc_signal<data_t>[nwords]; |
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425 | |
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426 | // Allocation for WRITE FSM |
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427 | r_write_data = new sc_signal<data_t>[nwords]; |
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428 | r_write_be = new sc_signal<be_t>[nwords]; |
---|
429 | r_write_to_init_cmd_data = new sc_signal<data_t>[nwords]; |
---|
430 | r_write_to_init_cmd_be = new sc_signal<be_t>[nwords]; |
---|
431 | r_write_to_ixr_cmd_data = new sc_signal<data_t>[nwords]; |
---|
432 | |
---|
433 | // Allocation for SC FSM |
---|
434 | r_sc_to_ixr_cmd_data = new sc_signal<data_t>[nwords]; |
---|
435 | r_sc_rdata = new sc_signal<data_t>[2]; |
---|
436 | |
---|
437 | |
---|
438 | // Simulation |
---|
439 | |
---|
440 | SC_METHOD(transition); |
---|
441 | dont_initialize(); |
---|
442 | sensitive << p_clk.pos(); |
---|
443 | |
---|
444 | SC_METHOD(genMoore); |
---|
445 | dont_initialize(); |
---|
446 | sensitive << p_clk.neg(); |
---|
447 | |
---|
448 | } // end constructor |
---|
449 | |
---|
450 | /////////////////////////////////////////////////////////////////////// |
---|
451 | tmpl(void)::start_monitor( vci_addr_t addr, vci_addr_t length ) |
---|
452 | /////////////////////////////////////////////////////////////////////// |
---|
453 | { |
---|
454 | m_monitor_ok = true; |
---|
455 | m_monitor_base = addr; |
---|
456 | m_monitor_length = length; |
---|
457 | } |
---|
458 | |
---|
459 | /////////////////////////////////////////////////////////////////////// |
---|
460 | tmpl(void)::stop_monitor() |
---|
461 | /////////////////////////////////////////////////////////////////////// |
---|
462 | { |
---|
463 | m_monitor_ok = false; |
---|
464 | } |
---|
465 | |
---|
466 | /////////////////////////////////////////////////////////////////////// |
---|
467 | tmpl(void)::check_monitor( const char *buf, vci_addr_t addr, data_t data ) |
---|
468 | /////////////////////////////////////////////////////////////////////// |
---|
469 | { |
---|
470 | if ( (addr >= m_monitor_base) and |
---|
471 | (addr < m_monitor_base + m_monitor_length) ) |
---|
472 | { |
---|
473 | std::cout << " MEMC Write Monitor : " << buf << " Address = " << std::hex << addr |
---|
474 | << " / Data = " << data << std::endl; |
---|
475 | } |
---|
476 | } |
---|
477 | |
---|
478 | ///////////////////////////////////////////////////// |
---|
479 | tmpl(void)::copies_monitor( vci_addr_t addr ) |
---|
480 | ///////////////////////////////////////////////////// |
---|
481 | { |
---|
482 | DirectoryEntry entry = m_cache_directory.read_neutral(addr); |
---|
483 | if ( (entry.count != m_debug_previous_count) or |
---|
484 | (entry.valid != m_debug_previous_hit) ) |
---|
485 | { |
---|
486 | std::cout << " MEMC " << name() |
---|
487 | << " cache change at cycle " << std::dec << m_cpt_cycles |
---|
488 | << " for address " << std::hex << addr |
---|
489 | << " / HIT = " << entry.valid |
---|
490 | << " / COUNT = " << std::dec << entry.count << std::endl; |
---|
491 | } |
---|
492 | m_debug_previous_count = entry.count; |
---|
493 | m_debug_previous_hit = entry.valid; |
---|
494 | } |
---|
495 | |
---|
496 | ////////////////////////////////////////////////// |
---|
497 | tmpl(void)::print_trace() |
---|
498 | ////////////////////////////////////////////////// |
---|
499 | { |
---|
500 | std::cout << "MEMC " << name() << std::endl; |
---|
501 | std::cout << " " << tgt_cmd_fsm_str[r_tgt_cmd_fsm] |
---|
502 | << " | " << tgt_rsp_fsm_str[r_tgt_rsp_fsm] |
---|
503 | << " | " << read_fsm_str[r_read_fsm] |
---|
504 | << " | " << write_fsm_str[r_write_fsm] |
---|
505 | << " | " << sc_fsm_str[r_sc_fsm] |
---|
506 | << " | " << cleanup_fsm_str[r_cleanup_fsm] << std::endl; |
---|
507 | std::cout << " " << init_cmd_fsm_str[r_init_cmd_fsm] |
---|
508 | << " | " << init_rsp_fsm_str[r_init_rsp_fsm] |
---|
509 | << " | " << ixr_cmd_fsm_str[r_ixr_cmd_fsm] |
---|
510 | << " | " << ixr_rsp_fsm_str[r_ixr_rsp_fsm] |
---|
511 | << " | " << xram_rsp_fsm_str[r_xram_rsp_fsm] << std::endl; |
---|
512 | } |
---|
513 | |
---|
514 | ///////////////////////////////////////// |
---|
515 | tmpl(void)::print_stats() |
---|
516 | ///////////////////////////////////////// |
---|
517 | { |
---|
518 | std::cout << "----------------------------------" << std::dec << std::endl; |
---|
519 | std::cout << "MEM_CACHE " << m_srcid_ini << " / Time = " << m_cpt_cycles << std::endl |
---|
520 | << "- READ RATE = " << (double)m_cpt_read/m_cpt_cycles << std::endl |
---|
521 | << "- READ TOTAL = " << m_cpt_read << std::endl |
---|
522 | << "- READ MISS RATE = " << (double)m_cpt_read_miss/m_cpt_read << std::endl |
---|
523 | << "- WRITE RATE = " << (double)m_cpt_write/m_cpt_cycles << std::endl |
---|
524 | << "- WRITE TOTAL = " << m_cpt_write << std::endl |
---|
525 | << "- WRITE MISS RATE = " << (double)m_cpt_write_miss/m_cpt_write << std::endl |
---|
526 | << "- WRITE BURST LENGTH = " << (double)m_cpt_write_cells/m_cpt_write << std::endl |
---|
527 | << "- WRITE BURST TOTAL = " << m_cpt_write_cells << std::endl |
---|
528 | << "- REQUESTS TRT FULL = " << m_cpt_trt_full << std::endl |
---|
529 | << "- READ TRT BLOKED HIT = " << m_cpt_trt_rb << std::endl |
---|
530 | << "- UPDATE RATE = " << (double)m_cpt_update/m_cpt_cycles << std::endl |
---|
531 | << "- UPDATE ARITY = " << (double)m_cpt_update_mult/m_cpt_update << std::endl |
---|
532 | << "- INVAL MULTICAST RATE = " << (double)(m_cpt_inval-m_cpt_inval_brdcast)/m_cpt_cycles << std::endl |
---|
533 | << "- INVAL MULTICAST ARITY= " << (double)m_cpt_inval_mult/(m_cpt_inval-m_cpt_inval_brdcast) << std::endl |
---|
534 | << "- INVAL BROADCAST RATE = " << (double)m_cpt_inval_brdcast/m_cpt_cycles << std::endl |
---|
535 | << "- SAVE DIRTY RATE = " << (double)m_cpt_write_dirty/m_cpt_cycles << std::endl |
---|
536 | << "- CLEANUP RATE = " << (double)m_cpt_cleanup/m_cpt_cycles << std::endl |
---|
537 | << "- LL RATE = " << (double)m_cpt_ll/m_cpt_cycles << std::endl |
---|
538 | << "- SC RATE = " << (double)m_cpt_sc/m_cpt_cycles << std::endl; |
---|
539 | } |
---|
540 | |
---|
541 | ///////////////////////////////// |
---|
542 | tmpl(/**/)::~VciMemCacheV4() |
---|
543 | ///////////////////////////////// |
---|
544 | { |
---|
545 | for(size_t i=0; i<m_ways ; i++){ |
---|
546 | for(size_t j=0; j<m_sets ; j++){ |
---|
547 | delete [] m_cache_data[i][j]; |
---|
548 | } |
---|
549 | } |
---|
550 | for(size_t i=0; i<m_ways ; i++){ |
---|
551 | delete [] m_cache_data[i]; |
---|
552 | } |
---|
553 | delete [] m_cache_data; |
---|
554 | delete [] m_coherence_table; |
---|
555 | |
---|
556 | delete [] r_ixr_rsp_to_xram_rsp_rok; |
---|
557 | |
---|
558 | delete [] r_xram_rsp_victim_data; |
---|
559 | delete [] r_xram_rsp_to_tgt_rsp_data; |
---|
560 | delete [] r_xram_rsp_to_ixr_cmd_data; |
---|
561 | |
---|
562 | delete [] r_read_data; |
---|
563 | delete [] r_read_to_tgt_rsp_data; |
---|
564 | |
---|
565 | delete [] r_write_data; |
---|
566 | delete [] r_write_be; |
---|
567 | delete [] r_write_to_init_cmd_data; |
---|
568 | } |
---|
569 | |
---|
570 | ////////////////////////////////// |
---|
571 | tmpl(void)::transition() |
---|
572 | ////////////////////////////////// |
---|
573 | { |
---|
574 | using soclib::common::uint32_log2; |
---|
575 | |
---|
576 | // RESET |
---|
577 | if ( ! p_resetn.read() ) { |
---|
578 | |
---|
579 | // Initializing FSMs |
---|
580 | r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
581 | r_tgt_rsp_fsm = TGT_RSP_READ_IDLE; |
---|
582 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
583 | r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
584 | r_read_fsm = READ_IDLE; |
---|
585 | r_write_fsm = WRITE_IDLE; |
---|
586 | r_sc_fsm = SC_IDLE; |
---|
587 | r_cleanup_fsm = CLEANUP_IDLE; |
---|
588 | r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
589 | r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
590 | r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
591 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
592 | r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
593 | r_ixr_cmd_fsm = IXR_CMD_READ_IDLE; |
---|
594 | |
---|
595 | m_debug_global = false; |
---|
596 | m_debug_tgt_cmd_fsm = false; |
---|
597 | m_debug_tgt_rsp_fsm = false; |
---|
598 | m_debug_init_cmd_fsm = false; |
---|
599 | m_debug_init_rsp_fsm = false; |
---|
600 | m_debug_read_fsm = false; |
---|
601 | m_debug_write_fsm = false; |
---|
602 | m_debug_sc_fsm = false; |
---|
603 | m_debug_cleanup_fsm = false; |
---|
604 | m_debug_ixr_cmd_fsm = false; |
---|
605 | m_debug_ixr_rsp_fsm = false; |
---|
606 | m_debug_xram_rsp_fsm = false; |
---|
607 | m_debug_previous_hit = false; |
---|
608 | m_debug_previous_count = 0; |
---|
609 | |
---|
610 | // Initializing Tables |
---|
611 | m_cache_directory.init(); |
---|
612 | m_transaction_tab.init(); |
---|
613 | m_heap.init(); |
---|
614 | |
---|
615 | // initializing FIFOs and communication Buffers |
---|
616 | |
---|
617 | m_cmd_read_addr_fifo.init(); |
---|
618 | m_cmd_read_length_fifo.init(); |
---|
619 | m_cmd_read_srcid_fifo.init(); |
---|
620 | m_cmd_read_trdid_fifo.init(); |
---|
621 | m_cmd_read_pktid_fifo.init(); |
---|
622 | |
---|
623 | m_cmd_write_addr_fifo.init(); |
---|
624 | m_cmd_write_eop_fifo.init(); |
---|
625 | m_cmd_write_srcid_fifo.init(); |
---|
626 | m_cmd_write_trdid_fifo.init(); |
---|
627 | m_cmd_write_pktid_fifo.init(); |
---|
628 | m_cmd_write_data_fifo.init(); |
---|
629 | |
---|
630 | m_cmd_sc_addr_fifo.init(); |
---|
631 | m_cmd_sc_srcid_fifo.init(); |
---|
632 | m_cmd_sc_trdid_fifo.init(); |
---|
633 | m_cmd_sc_pktid_fifo.init(); |
---|
634 | m_cmd_sc_wdata_fifo.init(); |
---|
635 | m_cmd_sc_eop_fifo.init(); |
---|
636 | |
---|
637 | r_read_to_tgt_rsp_req = false; |
---|
638 | r_read_to_ixr_cmd_req = false; |
---|
639 | |
---|
640 | r_write_to_tgt_rsp_req = false; |
---|
641 | r_write_to_ixr_cmd_req = false; |
---|
642 | r_write_to_init_cmd_multi_req = false; |
---|
643 | r_write_to_init_cmd_brdcast_req = false; |
---|
644 | r_write_to_init_rsp_req = false; |
---|
645 | m_write_to_init_cmd_inst_fifo.init(); |
---|
646 | m_write_to_init_cmd_srcid_fifo.init(); |
---|
647 | #if L1_MULTI_CACHE |
---|
648 | m_write_to_init_cmd_cache_id_fifo.init(); |
---|
649 | #endif |
---|
650 | |
---|
651 | r_cleanup_to_tgt_rsp_req = false; |
---|
652 | |
---|
653 | r_init_rsp_to_tgt_rsp_req = false; |
---|
654 | |
---|
655 | r_sc_to_tgt_rsp_req = false; |
---|
656 | r_sc_cpt = 0; |
---|
657 | r_sc_lfsr = -1; |
---|
658 | r_sc_to_ixr_cmd_req = false; |
---|
659 | r_sc_to_init_cmd_multi_req = false; |
---|
660 | r_sc_to_init_cmd_brdcast_req = false; |
---|
661 | m_sc_to_init_cmd_inst_fifo.init(); |
---|
662 | m_sc_to_init_cmd_srcid_fifo.init(); |
---|
663 | #if L1_MULTI_CACHE |
---|
664 | m_sc_to_init_cmd_cache_id_fifo.init(); |
---|
665 | #endif |
---|
666 | |
---|
667 | for(size_t i=0; i<m_transaction_tab_lines ; i++){ |
---|
668 | r_ixr_rsp_to_xram_rsp_rok[i] = false; |
---|
669 | } |
---|
670 | |
---|
671 | r_xram_rsp_to_tgt_rsp_req = false; |
---|
672 | r_xram_rsp_to_init_cmd_multi_req = false; |
---|
673 | r_xram_rsp_to_init_cmd_brdcast_req = false; |
---|
674 | r_xram_rsp_to_ixr_cmd_req = false; |
---|
675 | r_xram_rsp_trt_index = 0; |
---|
676 | m_xram_rsp_to_init_cmd_inst_fifo.init(); |
---|
677 | m_xram_rsp_to_init_cmd_srcid_fifo.init(); |
---|
678 | #if L1_MULTI_CACHE |
---|
679 | m_xram_rsp_to_init_cmd_cache_id_fifo.init(); |
---|
680 | #endif |
---|
681 | |
---|
682 | r_ixr_cmd_cpt = 0; |
---|
683 | |
---|
684 | r_copies_limit = 3; |
---|
685 | |
---|
686 | // Activity counters |
---|
687 | m_cpt_cycles = 0; |
---|
688 | m_cpt_read = 0; |
---|
689 | m_cpt_read_miss = 0; |
---|
690 | m_cpt_write = 0; |
---|
691 | m_cpt_write_miss = 0; |
---|
692 | m_cpt_write_cells = 0; |
---|
693 | m_cpt_write_dirty = 0; |
---|
694 | m_cpt_update = 0; |
---|
695 | m_cpt_update_mult = 0; |
---|
696 | m_cpt_inval_brdcast = 0; |
---|
697 | m_cpt_inval = 0; |
---|
698 | m_cpt_inval_mult = 0; |
---|
699 | m_cpt_cleanup = 0; |
---|
700 | m_cpt_ll = 0; |
---|
701 | m_cpt_sc = 0; |
---|
702 | m_cpt_trt_full = 0; |
---|
703 | m_cpt_trt_rb = 0; |
---|
704 | |
---|
705 | return; |
---|
706 | } |
---|
707 | |
---|
708 | bool cmd_read_fifo_put = false; |
---|
709 | bool cmd_read_fifo_get = false; |
---|
710 | |
---|
711 | bool cmd_write_fifo_put = false; |
---|
712 | bool cmd_write_fifo_get = false; |
---|
713 | |
---|
714 | bool cmd_sc_fifo_put = false; |
---|
715 | bool cmd_sc_fifo_get = false; |
---|
716 | |
---|
717 | bool write_to_init_cmd_fifo_put = false; |
---|
718 | bool write_to_init_cmd_fifo_get = false; |
---|
719 | bool write_to_init_cmd_fifo_inst = false; |
---|
720 | size_t write_to_init_cmd_fifo_srcid = 0; |
---|
721 | |
---|
722 | #if L1_MULTI_CACHE |
---|
723 | size_t write_to_init_cmd_fifo_cache_id = 0; |
---|
724 | #endif |
---|
725 | |
---|
726 | bool xram_rsp_to_init_cmd_fifo_put = false; |
---|
727 | bool xram_rsp_to_init_cmd_fifo_get = false; |
---|
728 | bool xram_rsp_to_init_cmd_fifo_inst = false; |
---|
729 | size_t xram_rsp_to_init_cmd_fifo_srcid = 0; |
---|
730 | |
---|
731 | #if L1_MULTI_CACHE |
---|
732 | size_t xram_rsp_to_init_cmd_fifo_cache_id = 0; |
---|
733 | #endif |
---|
734 | |
---|
735 | bool sc_to_init_cmd_fifo_put = false; |
---|
736 | bool sc_to_init_cmd_fifo_get = false; |
---|
737 | bool sc_to_init_cmd_fifo_inst = false; |
---|
738 | size_t sc_to_init_cmd_fifo_srcid = 0; |
---|
739 | |
---|
740 | #if L1_MULTI_CACHE |
---|
741 | size_t sc_to_init_cmd_fifo_cache_id = 0; |
---|
742 | #endif |
---|
743 | |
---|
744 | m_debug_global = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
745 | m_debug_tgt_cmd_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
746 | m_debug_tgt_rsp_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
747 | m_debug_init_cmd_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
748 | m_debug_init_rsp_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
749 | m_debug_read_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
750 | m_debug_write_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
751 | m_debug_sc_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
752 | m_debug_cleanup_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
753 | m_debug_ixr_cmd_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
754 | m_debug_ixr_rsp_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
755 | m_debug_xram_rsp_fsm = (m_cpt_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
756 | |
---|
757 | |
---|
758 | #if DEBUG_MEMC_GLOBAL |
---|
759 | if( m_debug_global ) |
---|
760 | { |
---|
761 | std::cout << "---------------------------------------------" << std::dec << std::endl; |
---|
762 | std::cout << "MEM_CACHE " << m_srcid_ini << " ; Time = " << m_cpt_cycles << std::endl |
---|
763 | << " - TGT_CMD FSM = " << tgt_cmd_fsm_str[r_tgt_cmd_fsm] << std::endl |
---|
764 | << " - TGT_RSP FSM = " << tgt_rsp_fsm_str[r_tgt_rsp_fsm] << std::endl |
---|
765 | << " - INIT_CMD FSM = " << init_cmd_fsm_str[r_init_cmd_fsm] << std::endl |
---|
766 | << " - INIT_RSP FSM = " << init_rsp_fsm_str[r_init_rsp_fsm] << std::endl |
---|
767 | << " - READ FSM = " << read_fsm_str[r_read_fsm] << std::endl |
---|
768 | << " - WRITE FSM = " << write_fsm_str[r_write_fsm] << std::endl |
---|
769 | << " - SC FSM = " << sc_fsm_str[r_sc_fsm] << std::endl |
---|
770 | << " - CLEANUP FSM = " << cleanup_fsm_str[r_cleanup_fsm] << std::endl |
---|
771 | << " - IXR_CMD FSM = " << ixr_cmd_fsm_str[r_ixr_cmd_fsm] << std::endl |
---|
772 | << " - IXR_RSP FSM = " << ixr_rsp_fsm_str[r_ixr_rsp_fsm] << std::endl |
---|
773 | << " - XRAM_RSP FSM = " << xram_rsp_fsm_str[r_xram_rsp_fsm] << std::endl |
---|
774 | << " - ALLOC_DIR FSM = " << alloc_dir_fsm_str[r_alloc_dir_fsm] << std::endl |
---|
775 | << " - ALLOC_TRT FSM = " << alloc_trt_fsm_str[r_alloc_trt_fsm] << std::endl |
---|
776 | << " - ALLOC_UPT FSM = " << alloc_upt_fsm_str[r_alloc_upt_fsm] << std::endl |
---|
777 | << " - ALLOC_HEAP FSM = " << alloc_heap_fsm_str[r_alloc_heap_fsm] << std::endl; |
---|
778 | } |
---|
779 | #endif |
---|
780 | |
---|
781 | //////////////////////////////////////////////////////////////////////////////////// |
---|
782 | // TGT_CMD FSM |
---|
783 | //////////////////////////////////////////////////////////////////////////////////// |
---|
784 | // The TGT_CMD_FSM controls the incoming VCI command pakets from the processors |
---|
785 | // |
---|
786 | // There is 3 types of accepted commands : |
---|
787 | // - READ : a READ request has a length of 1 VCI cell. It can be a single word |
---|
788 | // or an entire cache line, depending on the PLEN value. |
---|
789 | // - WRITE : a WRITE request has a maximum length of 16 cells, and can only |
---|
790 | // concern words in a same line. |
---|
791 | // - SC : The SC request has a length of 2 cells or 4 cells. |
---|
792 | //////////////////////////////////////////////////////////////////////////////////// |
---|
793 | |
---|
794 | switch ( r_tgt_cmd_fsm.read() ) |
---|
795 | { |
---|
796 | ////////////////// |
---|
797 | case TGT_CMD_IDLE: |
---|
798 | { |
---|
799 | if ( p_vci_tgt.cmdval ) |
---|
800 | { |
---|
801 | |
---|
802 | #if DEBUG_MEMC_TGT_CMD |
---|
803 | if( m_debug_tgt_cmd_fsm ) |
---|
804 | { |
---|
805 | std::cout << " <MEMC.TGT_CMD_IDLE> Receive command from srcid " << std::dec << p_vci_tgt.srcid.read() |
---|
806 | << " / for address " << std::hex << p_vci_tgt.address.read() << std::endl; |
---|
807 | } |
---|
808 | #endif |
---|
809 | // checking segmentation violation |
---|
810 | vci_addr_t address = p_vci_tgt.address.read(); |
---|
811 | uint32_t plen = p_vci_tgt.plen.read(); |
---|
812 | bool found = false; |
---|
813 | for ( size_t seg_id = 0 ; seg_id < m_nseg ; seg_id++ ) |
---|
814 | { |
---|
815 | if ( m_seg[seg_id]->contains(address) && |
---|
816 | m_seg[seg_id]->contains(address + plen - vci_param::B) ) |
---|
817 | { |
---|
818 | found = true; |
---|
819 | } |
---|
820 | } |
---|
821 | if ( not found ) |
---|
822 | { |
---|
823 | std::cout << "VCI_MEM_CACHE ERROR " << name() << std::endl; |
---|
824 | std::cout << "Out of segment VCI address in TGT_CMD_IDLE state" << std::endl; |
---|
825 | exit(0); |
---|
826 | } |
---|
827 | |
---|
828 | if ( p_vci_tgt.cmd.read() == vci_param::CMD_READ ) |
---|
829 | { |
---|
830 | r_tgt_cmd_fsm = TGT_CMD_READ; |
---|
831 | } |
---|
832 | else if ( p_vci_tgt.cmd.read() == vci_param::CMD_WRITE ) |
---|
833 | { |
---|
834 | r_tgt_cmd_fsm = TGT_CMD_WRITE; |
---|
835 | } |
---|
836 | else if ( p_vci_tgt.cmd.read() == vci_param::CMD_STORE_COND ) |
---|
837 | { |
---|
838 | r_tgt_cmd_fsm = TGT_CMD_ATOMIC; |
---|
839 | } |
---|
840 | else |
---|
841 | { |
---|
842 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
843 | << " TGT_CMD_IDLE state" << std::endl; |
---|
844 | std::cout << " illegal VCI command type" << std::endl; |
---|
845 | exit(0); |
---|
846 | } |
---|
847 | } |
---|
848 | break; |
---|
849 | } |
---|
850 | ////////////////// |
---|
851 | case TGT_CMD_READ: |
---|
852 | { |
---|
853 | if ((m_x[(vci_addr_t)p_vci_tgt.address.read()]+(p_vci_tgt.plen.read()>>2)) > 16) |
---|
854 | { |
---|
855 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " TGT_CMD_READ state" << std::endl; |
---|
856 | std::cout << " illegal address/plen combination for VCI read command" << std::endl; |
---|
857 | exit(0); |
---|
858 | } |
---|
859 | if ( !p_vci_tgt.eop.read() ) |
---|
860 | { |
---|
861 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " TGT_CMD_READ state" << std::endl; |
---|
862 | std::cout << " read command packets must contain one single flit" << std::endl; |
---|
863 | exit(0); |
---|
864 | } |
---|
865 | |
---|
866 | if ( p_vci_tgt.cmdval && m_cmd_read_addr_fifo.wok() ) |
---|
867 | { |
---|
868 | |
---|
869 | #if DEBUG_MEMC_TGT_CMD |
---|
870 | if( m_debug_tgt_cmd_fsm ) |
---|
871 | { |
---|
872 | std::cout << " <MEMC.TGT_CMD_READ> Push into read_fifo:" |
---|
873 | << " address = " << std::hex << p_vci_tgt.address.read() |
---|
874 | << " srcid = " << std::dec << p_vci_tgt.srcid.read() |
---|
875 | << " trdid = " << p_vci_tgt.trdid.read() |
---|
876 | << " plen = " << std::dec << p_vci_tgt.plen.read() << std::endl; |
---|
877 | } |
---|
878 | #endif |
---|
879 | cmd_read_fifo_put = true; |
---|
880 | m_cpt_read++; |
---|
881 | r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
882 | } |
---|
883 | break; |
---|
884 | } |
---|
885 | /////////////////// |
---|
886 | case TGT_CMD_WRITE: |
---|
887 | { |
---|
888 | if ( p_vci_tgt.cmdval && m_cmd_write_addr_fifo.wok() ) |
---|
889 | { |
---|
890 | |
---|
891 | #if DEBUG_MEMC_TGT_CMD |
---|
892 | if( m_debug_tgt_cmd_fsm ) |
---|
893 | { |
---|
894 | std::cout << " <MEMC.TGT_CMD_WRITE> Push into write_fifo:" |
---|
895 | << " address = " << std::hex << p_vci_tgt.address.read() |
---|
896 | << " srcid = " << std::dec << p_vci_tgt.srcid.read() |
---|
897 | << " trdid = " << p_vci_tgt.trdid.read() |
---|
898 | << " wdata = " << std::hex << p_vci_tgt.wdata.read() |
---|
899 | << " be = " << p_vci_tgt.be.read() |
---|
900 | << " plen = " << std::dec << p_vci_tgt.plen.read() << std::endl; |
---|
901 | } |
---|
902 | #endif |
---|
903 | cmd_write_fifo_put = true; |
---|
904 | if( p_vci_tgt.eop ) r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
905 | } |
---|
906 | break; |
---|
907 | } |
---|
908 | //////////////////// |
---|
909 | case TGT_CMD_ATOMIC: |
---|
910 | { |
---|
911 | if ( (p_vci_tgt.plen.read() != 8) && (p_vci_tgt.plen.read() != 16) ) |
---|
912 | { |
---|
913 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " TGT_CMD_ATOMIC state" << std::endl; |
---|
914 | std::cout << "illegal format for sc command " << std::endl; |
---|
915 | exit(0); |
---|
916 | } |
---|
917 | |
---|
918 | if ( p_vci_tgt.cmdval && m_cmd_sc_addr_fifo.wok() ) |
---|
919 | { |
---|
920 | |
---|
921 | #if DEBUG_MEMC_TGT_CMD |
---|
922 | if( m_debug_tgt_cmd_fsm ) |
---|
923 | { |
---|
924 | std::cout << " <MEMC.TGT_CMD_ATOMIC> Pushing command into cmd_sc_fifo:" |
---|
925 | << " address = " << std::hex << p_vci_tgt.address.read() |
---|
926 | << " srcid = " << std::dec << p_vci_tgt.srcid.read() |
---|
927 | << " trdid = " << p_vci_tgt.trdid.read() |
---|
928 | << " wdata = " << std::hex << p_vci_tgt.wdata.read() |
---|
929 | << " be = " << p_vci_tgt.be.read() |
---|
930 | << " plen = " << std::dec << p_vci_tgt.plen.read() << std::endl; |
---|
931 | } |
---|
932 | #endif |
---|
933 | cmd_sc_fifo_put = true; |
---|
934 | if( p_vci_tgt.eop ) r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
935 | } |
---|
936 | break; |
---|
937 | } |
---|
938 | } // end switch tgt_cmd_fsm |
---|
939 | |
---|
940 | ///////////////////////////////////////////////////////////////////////// |
---|
941 | // INIT_RSP FSM |
---|
942 | ///////////////////////////////////////////////////////////////////////// |
---|
943 | // This FSM controls the response to the update or inval coherence |
---|
944 | // requests sent by the memory cache to the L1 caches and update the UPT. |
---|
945 | // |
---|
946 | // It can be update or inval requests initiated by the WRITE FSM, |
---|
947 | // or inval requests initiated by the XRAM_RSP FSM. |
---|
948 | // It can also be a direct request from the WRITE FSM. |
---|
949 | // |
---|
950 | // The FSM decrements the proper entry in UPT. |
---|
951 | // It sends a request to the TGT_RSP FSM to complete the pending |
---|
952 | // write transaction (acknowledge response to the writer processor), |
---|
953 | // and clear the UPT entry when all responses have been received. |
---|
954 | // |
---|
955 | // All those response packets are one word, compact |
---|
956 | // packets complying with the VCI advanced format. |
---|
957 | // The index in the Table is defined in the RTRDID field, and |
---|
958 | // the transaction type is defined in the UPT entry. |
---|
959 | ///////////////////////////////////////////////////////////////////// |
---|
960 | |
---|
961 | switch ( r_init_rsp_fsm.read() ) |
---|
962 | { |
---|
963 | /////////////////// |
---|
964 | case INIT_RSP_IDLE: // wait a response for a coherence transaction |
---|
965 | { |
---|
966 | if ( p_vci_ini.rspval ) |
---|
967 | { |
---|
968 | |
---|
969 | #if DEBUG_MEMC_INIT_RSP |
---|
970 | if( m_debug_init_rsp_fsm ) |
---|
971 | { |
---|
972 | std::cout << " <MEMC.INIT_RSP_IDLE> Response for UPT entry " |
---|
973 | << p_vci_ini.rtrdid.read() << std::endl; |
---|
974 | } |
---|
975 | #endif |
---|
976 | if ( p_vci_ini.rtrdid.read() >= m_update_tab.size() ) |
---|
977 | { |
---|
978 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
979 | << " INIT_RSP_IDLE state" << std::endl |
---|
980 | << "index too large for UPT: " |
---|
981 | << " / rtrdid = " << std::dec << p_vci_ini.rtrdid.read() |
---|
982 | << " / UPT size = " << std::dec << m_update_tab.size() << std::endl; |
---|
983 | exit(0); |
---|
984 | } |
---|
985 | if ( !p_vci_ini.reop.read() ) |
---|
986 | { |
---|
987 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
988 | << " INIT_RSP_IDLE state" << std::endl; |
---|
989 | std::cout << "all coherence response packets must be one flit" << std::endl; |
---|
990 | exit(0); |
---|
991 | } |
---|
992 | |
---|
993 | r_init_rsp_upt_index = p_vci_ini.rtrdid.read(); |
---|
994 | r_init_rsp_fsm = INIT_RSP_UPT_LOCK; |
---|
995 | } |
---|
996 | else if( r_write_to_init_rsp_req.read() ) |
---|
997 | { |
---|
998 | r_init_rsp_upt_index = r_write_to_init_rsp_upt_index.read(); |
---|
999 | r_write_to_init_rsp_req = false; |
---|
1000 | r_init_rsp_fsm = INIT_RSP_UPT_LOCK; |
---|
1001 | } |
---|
1002 | break; |
---|
1003 | } |
---|
1004 | /////////////////////// |
---|
1005 | case INIT_RSP_UPT_LOCK: // decrement the number of expected responses |
---|
1006 | { |
---|
1007 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_INIT_RSP ) |
---|
1008 | { |
---|
1009 | size_t count = 0; |
---|
1010 | bool valid = m_update_tab.decrement(r_init_rsp_upt_index.read(), count); |
---|
1011 | |
---|
1012 | #if DEBUG_MEMC_INIT_RSP |
---|
1013 | if( m_debug_init_rsp_fsm ) |
---|
1014 | { |
---|
1015 | std::cout << " <MEMC.INIT_RSP_UPT_LOCK> Decrement the responses counter for UPT:" |
---|
1016 | << " entry = " << r_init_rsp_upt_index.read() |
---|
1017 | << " / rsp_count = " << std::dec << count << std::endl; |
---|
1018 | } |
---|
1019 | #endif |
---|
1020 | if ( not valid ) |
---|
1021 | { |
---|
1022 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
1023 | << " INIT_RSP_UPT_LOCK state" << std::endl |
---|
1024 | << "unsuccessful access to decrement the UPT" << std::endl; |
---|
1025 | exit(0); |
---|
1026 | } |
---|
1027 | |
---|
1028 | if ( count == 0 ) r_init_rsp_fsm = INIT_RSP_UPT_CLEAR; |
---|
1029 | else r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
1030 | } |
---|
1031 | break; |
---|
1032 | } |
---|
1033 | //////////////////////// |
---|
1034 | case INIT_RSP_UPT_CLEAR: // clear the UPT entry |
---|
1035 | { |
---|
1036 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_INIT_RSP ) |
---|
1037 | { |
---|
1038 | r_init_rsp_srcid = m_update_tab.srcid(r_init_rsp_upt_index.read()); |
---|
1039 | r_init_rsp_trdid = m_update_tab.trdid(r_init_rsp_upt_index.read()); |
---|
1040 | r_init_rsp_pktid = m_update_tab.pktid(r_init_rsp_upt_index.read()); |
---|
1041 | r_init_rsp_nline = m_update_tab.nline(r_init_rsp_upt_index.read()); |
---|
1042 | bool need_rsp = m_update_tab.need_rsp(r_init_rsp_upt_index.read()); |
---|
1043 | |
---|
1044 | if ( need_rsp ) r_init_rsp_fsm = INIT_RSP_END; |
---|
1045 | else r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
1046 | |
---|
1047 | m_update_tab.clear(r_init_rsp_upt_index.read()); |
---|
1048 | |
---|
1049 | #if DEBUG_MEMC_INIT_RSP |
---|
1050 | if ( m_debug_init_rsp_fsm ) |
---|
1051 | { |
---|
1052 | std::cout << " <MEMC.INIT_RSP_UPT_CLEAR> Clear UPT entry " |
---|
1053 | << r_init_rsp_upt_index.read() << std::endl; |
---|
1054 | } |
---|
1055 | #endif |
---|
1056 | } |
---|
1057 | break; |
---|
1058 | } |
---|
1059 | ////////////////// |
---|
1060 | case INIT_RSP_END: // Post a request to TGT_RSP FSM |
---|
1061 | { |
---|
1062 | if ( !r_init_rsp_to_tgt_rsp_req ) |
---|
1063 | { |
---|
1064 | r_init_rsp_to_tgt_rsp_req = true; |
---|
1065 | r_init_rsp_to_tgt_rsp_srcid = r_init_rsp_srcid.read(); |
---|
1066 | r_init_rsp_to_tgt_rsp_trdid = r_init_rsp_trdid.read(); |
---|
1067 | r_init_rsp_to_tgt_rsp_pktid = r_init_rsp_pktid.read(); |
---|
1068 | r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
1069 | |
---|
1070 | #if DEBUG_MEMC_INIT_RSP |
---|
1071 | if ( m_debug_init_rsp_fsm ) |
---|
1072 | { |
---|
1073 | std::cout << " <MEMC.INIT_RSP_END> Request TGT_RSP FSM to send a response to srcid " |
---|
1074 | << r_init_rsp_srcid.read() << std::endl; |
---|
1075 | } |
---|
1076 | #endif |
---|
1077 | } |
---|
1078 | break; |
---|
1079 | } |
---|
1080 | } // end switch r_init_rsp_fsm |
---|
1081 | |
---|
1082 | //////////////////////////////////////////////////////////////////////////////////// |
---|
1083 | // READ FSM |
---|
1084 | //////////////////////////////////////////////////////////////////////////////////// |
---|
1085 | // The READ FSM controls the VCI read requests. |
---|
1086 | // It takes the lock protecting the cache directory to check the cache line status: |
---|
1087 | // - In case of HIT |
---|
1088 | // The fsm copies the data (one line, or one single word) |
---|
1089 | // in the r_read_to_tgt_rsp buffer. It waits if this buffer is not empty. |
---|
1090 | // The requesting initiator is registered in the cache directory. |
---|
1091 | // If the number of copy is larger than 1, the new copy is registered |
---|
1092 | // in the HEAP. |
---|
1093 | // If the number of copy is larger than the threshold, the HEAP is cleared, |
---|
1094 | // and the corresponding line switches to the counter mode. |
---|
1095 | // - In case of MISS |
---|
1096 | // The READ fsm takes the lock protecting the transaction tab. |
---|
1097 | // If a read transaction to the XRAM for this line already exists, |
---|
1098 | // or if the transaction tab is full, the fsm is stalled. |
---|
1099 | // If a TRT entry is free, the READ request is registered in TRT, |
---|
1100 | // it is consumed in the request FIFO, and transmited to the IXR_CMD FSM. |
---|
1101 | // The READ FSM returns in the IDLE state as the read transaction will be |
---|
1102 | // completed when the missing line will be received. |
---|
1103 | //////////////////////////////////////////////////////////////////////////////////// |
---|
1104 | |
---|
1105 | switch ( r_read_fsm.read() ) |
---|
1106 | { |
---|
1107 | /////////////// |
---|
1108 | case READ_IDLE: // waiting a read request |
---|
1109 | { |
---|
1110 | if (m_cmd_read_addr_fifo.rok()) |
---|
1111 | { |
---|
1112 | |
---|
1113 | #if DEBUG_MEMC_READ |
---|
1114 | if( m_debug_read_fsm ) |
---|
1115 | { |
---|
1116 | std::cout << " <MEMC.READ_IDLE> Read request:" |
---|
1117 | << " srcid = " << std::dec << m_cmd_read_srcid_fifo.read() |
---|
1118 | << " / address = " << std::hex << m_cmd_read_addr_fifo.read() |
---|
1119 | << " / nwords = " << std::dec << m_cmd_read_length_fifo.read() << std::endl; |
---|
1120 | } |
---|
1121 | #endif |
---|
1122 | r_read_fsm = READ_DIR_LOCK; |
---|
1123 | } |
---|
1124 | break; |
---|
1125 | } |
---|
1126 | /////////////////// |
---|
1127 | case READ_DIR_LOCK: // check directory for hit / miss |
---|
1128 | { |
---|
1129 | if ( r_alloc_dir_fsm.read() == ALLOC_DIR_READ ) |
---|
1130 | { |
---|
1131 | size_t way = 0; |
---|
1132 | DirectoryEntry entry = m_cache_directory.read(m_cmd_read_addr_fifo.read(), way); |
---|
1133 | |
---|
1134 | r_read_is_cnt = entry.is_cnt; |
---|
1135 | r_read_dirty = entry.dirty; |
---|
1136 | r_read_lock = entry.lock; |
---|
1137 | r_read_tag = entry.tag; |
---|
1138 | r_read_way = way; |
---|
1139 | r_read_count = entry.count; |
---|
1140 | r_read_copy = entry.owner.srcid; |
---|
1141 | |
---|
1142 | #if L1_MULTI_CACHE |
---|
1143 | r_read_copy_cache = entry.owner.cache_id; |
---|
1144 | #endif |
---|
1145 | r_read_copy_inst = entry.owner.inst; |
---|
1146 | r_read_ptr = entry.ptr; // pointer to the heap |
---|
1147 | |
---|
1148 | bool cached_read = (m_cmd_read_trdid_fifo.read() & 0x1); |
---|
1149 | if( entry.valid ) // hit |
---|
1150 | { |
---|
1151 | // test if we need to register a new copy in the heap |
---|
1152 | if ( entry.is_cnt || (entry.count == 0) || !cached_read ) |
---|
1153 | r_read_fsm = READ_DIR_HIT; |
---|
1154 | else |
---|
1155 | r_read_fsm = READ_HEAP_LOCK; |
---|
1156 | } |
---|
1157 | else // miss |
---|
1158 | { |
---|
1159 | r_read_fsm = READ_TRT_LOCK; |
---|
1160 | } |
---|
1161 | |
---|
1162 | #if DEBUG_MEMC_READ |
---|
1163 | if( m_debug_read_fsm ) |
---|
1164 | { |
---|
1165 | std::cout << " <MEMC.READ_DIR_LOCK> Accessing directory: " |
---|
1166 | << " address = " << std::hex << m_cmd_read_addr_fifo.read() |
---|
1167 | << " / hit = " << std::dec << entry.valid |
---|
1168 | << " / count = " <<std::dec << entry.count |
---|
1169 | << " / is_cnt = " << entry.is_cnt << std::endl; |
---|
1170 | } |
---|
1171 | #endif |
---|
1172 | } |
---|
1173 | break; |
---|
1174 | } |
---|
1175 | ////////////////// |
---|
1176 | case READ_DIR_HIT: // read data in cache & update the directory |
---|
1177 | // we enter this state in 3 cases: |
---|
1178 | // - the read request is uncachable |
---|
1179 | // - the cache line is in counter mode |
---|
1180 | // - the cache line is valid but not replcated |
---|
1181 | { |
---|
1182 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_READ ) |
---|
1183 | { |
---|
1184 | // signals generation |
---|
1185 | bool inst_read = (m_cmd_read_trdid_fifo.read() & 0x2); |
---|
1186 | bool cached_read = (m_cmd_read_trdid_fifo.read() & 0x1); |
---|
1187 | bool is_cnt = r_read_is_cnt.read(); |
---|
1188 | |
---|
1189 | // read data in the cache |
---|
1190 | size_t set = m_y[(vci_addr_t)(m_cmd_read_addr_fifo.read())]; |
---|
1191 | size_t way = r_read_way.read(); |
---|
1192 | for ( size_t i=0 ; i<m_words ; i++ ) r_read_data[i] = m_cache_data[way][set][i]; |
---|
1193 | |
---|
1194 | // update the cache directory |
---|
1195 | DirectoryEntry entry; |
---|
1196 | entry.valid = true; |
---|
1197 | entry.is_cnt = is_cnt; |
---|
1198 | entry.dirty = r_read_dirty.read(); |
---|
1199 | entry.tag = r_read_tag.read(); |
---|
1200 | entry.lock = r_read_lock.read(); |
---|
1201 | entry.ptr = r_read_ptr.read(); |
---|
1202 | if (cached_read) // Cached read => we must update the copies |
---|
1203 | { |
---|
1204 | if (!is_cnt) // Not counter mode |
---|
1205 | { |
---|
1206 | entry.owner.srcid = m_cmd_read_srcid_fifo.read(); |
---|
1207 | #if L1_MULTI_CACHE |
---|
1208 | entry.owner.cache_id = m_cmd_read_pktid_fifo.read(); |
---|
1209 | #endif |
---|
1210 | entry.owner.inst = inst_read; |
---|
1211 | entry.count = r_read_count.read() + 1; |
---|
1212 | } |
---|
1213 | else // Counter mode |
---|
1214 | { |
---|
1215 | entry.owner.srcid = 0; |
---|
1216 | #if L1_MULTI_CACHE |
---|
1217 | entry.owner.cache_id = 0; |
---|
1218 | #endif |
---|
1219 | entry.owner.inst = false; |
---|
1220 | entry.count = r_read_count.read() + 1; |
---|
1221 | } |
---|
1222 | } |
---|
1223 | else // Uncached read |
---|
1224 | { |
---|
1225 | entry.owner.srcid = r_read_copy.read(); |
---|
1226 | #if L1_MULTI_CACHE |
---|
1227 | entry.owner.cache_id = r_read_copy_cache.read(); |
---|
1228 | #endif |
---|
1229 | entry.owner.inst = r_read_copy_inst.read(); |
---|
1230 | entry.count = r_read_count.read(); |
---|
1231 | } |
---|
1232 | |
---|
1233 | #if DEBUG_MEMC_READ |
---|
1234 | if( m_debug_read_fsm ) |
---|
1235 | { |
---|
1236 | std::cout << " <MEMC.READ_DIR_HIT> Update directory entry:" |
---|
1237 | << " set = " << std::dec << set |
---|
1238 | << " / way = " << way |
---|
1239 | << " / owner_id = " << entry.owner.srcid |
---|
1240 | << " / owner_ins = " << entry.owner.inst |
---|
1241 | << " / count = " << entry.count |
---|
1242 | << " / is_cnt = " << entry.is_cnt << std::endl; |
---|
1243 | } |
---|
1244 | #endif |
---|
1245 | |
---|
1246 | m_cache_directory.write(set, way, entry); |
---|
1247 | r_read_fsm = READ_RSP; |
---|
1248 | } |
---|
1249 | break; |
---|
1250 | } |
---|
1251 | //////////////////// |
---|
1252 | case READ_HEAP_LOCK: // read data in cache, update the directory |
---|
1253 | // and prepare the HEAP update |
---|
1254 | { |
---|
1255 | if( r_alloc_heap_fsm.read() == ALLOC_HEAP_READ ) |
---|
1256 | { |
---|
1257 | // enter counter mode when we reach the limit of copies or the heap is full |
---|
1258 | bool go_cnt = (r_read_count.read() >= r_copies_limit.read()) || m_heap.is_full(); |
---|
1259 | |
---|
1260 | // read data in the cache |
---|
1261 | size_t set = m_y[(vci_addr_t)(m_cmd_read_addr_fifo.read())]; |
---|
1262 | size_t way = r_read_way.read(); |
---|
1263 | for ( size_t i=0 ; i<m_words ; i++ ) r_read_data[i] = m_cache_data[way][set][i]; |
---|
1264 | |
---|
1265 | // update the cache directory |
---|
1266 | DirectoryEntry entry; |
---|
1267 | entry.valid = true; |
---|
1268 | entry.is_cnt = go_cnt; |
---|
1269 | entry.dirty = r_read_dirty.read(); |
---|
1270 | entry.tag = r_read_tag.read(); |
---|
1271 | entry.lock = r_read_lock.read(); |
---|
1272 | entry.count = r_read_count.read() + 1; |
---|
1273 | |
---|
1274 | if (not go_cnt) // Not entering counter mode |
---|
1275 | { |
---|
1276 | entry.owner.srcid = r_read_copy.read(); |
---|
1277 | #if L1_MULTI_CACHE |
---|
1278 | entry.owner.cache_id= r_read_copy_cache.read(); |
---|
1279 | #endif |
---|
1280 | entry.owner.inst = r_read_copy_inst.read(); |
---|
1281 | entry.ptr = m_heap.next_free_ptr(); // set pointer on the heap |
---|
1282 | } |
---|
1283 | else // Entering Counter mode |
---|
1284 | { |
---|
1285 | entry.owner.srcid = 0; |
---|
1286 | #if L1_MULTI_CACHE |
---|
1287 | entry.owner.cache_id= 0; |
---|
1288 | #endif |
---|
1289 | entry.owner.inst = false; |
---|
1290 | entry.ptr = 0; |
---|
1291 | } |
---|
1292 | |
---|
1293 | m_cache_directory.write(set, way, entry); |
---|
1294 | |
---|
1295 | // prepare the heap update (add an entry, or clear the linked list) |
---|
1296 | if (not go_cnt) // not switching to counter mode |
---|
1297 | { |
---|
1298 | // We test if the next free entry in the heap is the last |
---|
1299 | HeapEntry heap_entry = m_heap.next_free_entry(); |
---|
1300 | r_read_next_ptr = heap_entry.next; |
---|
1301 | r_read_last_free = ( heap_entry.next == m_heap.next_free_ptr() ); |
---|
1302 | |
---|
1303 | r_read_fsm = READ_HEAP_WRITE; // add an entry in the HEAP |
---|
1304 | } |
---|
1305 | else // switching to counter mode |
---|
1306 | { |
---|
1307 | if ( r_read_count.read()>1 ) // heap must be cleared |
---|
1308 | { |
---|
1309 | HeapEntry next_entry = m_heap.read(r_read_ptr.read()); |
---|
1310 | r_read_next_ptr = m_heap.next_free_ptr(); |
---|
1311 | m_heap.write_free_ptr(r_read_ptr.read()); |
---|
1312 | |
---|
1313 | if( next_entry.next == r_read_ptr.read() ) // last entry |
---|
1314 | { |
---|
1315 | r_read_fsm = READ_HEAP_LAST; // erase the entry |
---|
1316 | } |
---|
1317 | else // not the last entry |
---|
1318 | { |
---|
1319 | r_read_ptr = next_entry.next; |
---|
1320 | r_read_fsm = READ_HEAP_ERASE; // erase the list |
---|
1321 | } |
---|
1322 | } |
---|
1323 | else // the heap is not used / nothing to do |
---|
1324 | { |
---|
1325 | r_read_fsm = READ_RSP; |
---|
1326 | } |
---|
1327 | } |
---|
1328 | |
---|
1329 | #if DEBUG_MEMC_READ |
---|
1330 | if( m_debug_read_fsm ) |
---|
1331 | { |
---|
1332 | std::cout << " <MEMC.READ_HEAP_LOCK> Update directory:" |
---|
1333 | << " tag = " << std::hex << entry.tag |
---|
1334 | << " set = " << std::dec << set |
---|
1335 | << " way = " << way |
---|
1336 | << " count = " << entry.count |
---|
1337 | << " is_cnt = " << entry.is_cnt << std::endl; |
---|
1338 | } |
---|
1339 | #endif |
---|
1340 | } |
---|
1341 | break; |
---|
1342 | } |
---|
1343 | ///////////////////// |
---|
1344 | case READ_HEAP_WRITE: // add a entry in the heap |
---|
1345 | { |
---|
1346 | if ( r_alloc_heap_fsm.read() == ALLOC_HEAP_READ ) |
---|
1347 | { |
---|
1348 | HeapEntry heap_entry; |
---|
1349 | heap_entry.owner.srcid = m_cmd_read_srcid_fifo.read(); |
---|
1350 | #if L1_MULTI_CACHE |
---|
1351 | heap_entry.owner.cache_id = m_cmd_read_pktid_fifo.read(); |
---|
1352 | #endif |
---|
1353 | heap_entry.owner.inst = (m_cmd_read_trdid_fifo.read() & 0x2); |
---|
1354 | |
---|
1355 | if(r_read_count.read() == 1) // creation of a new linked list |
---|
1356 | { |
---|
1357 | heap_entry.next = m_heap.next_free_ptr(); |
---|
1358 | } |
---|
1359 | else // head insertion in existing list |
---|
1360 | { |
---|
1361 | heap_entry.next = r_read_ptr.read(); |
---|
1362 | } |
---|
1363 | m_heap.write_free_entry(heap_entry); |
---|
1364 | m_heap.write_free_ptr(r_read_next_ptr.read()); |
---|
1365 | if(r_read_last_free.read()) m_heap.set_full(); |
---|
1366 | |
---|
1367 | r_read_fsm = READ_RSP; |
---|
1368 | |
---|
1369 | #if DEBUG_MEMC_READ |
---|
1370 | if( m_debug_read_fsm ) |
---|
1371 | { |
---|
1372 | std::cout << " <MEMC.READ_HEAP_WRITE> Add an entry in the heap:" |
---|
1373 | << " owner_id = " << heap_entry.owner.srcid |
---|
1374 | << " owner_ins = " << heap_entry.owner.inst << std::endl; |
---|
1375 | } |
---|
1376 | #endif |
---|
1377 | } |
---|
1378 | else |
---|
1379 | { |
---|
1380 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
1381 | << " READ_HEAP_WRITE state" << std::endl; |
---|
1382 | std::cout << "Bad HEAP allocation" << std::endl; |
---|
1383 | exit(0); |
---|
1384 | } |
---|
1385 | break; |
---|
1386 | } |
---|
1387 | ///////////////////// |
---|
1388 | case READ_HEAP_ERASE: |
---|
1389 | { |
---|
1390 | if ( r_alloc_heap_fsm.read() == ALLOC_HEAP_READ ) |
---|
1391 | { |
---|
1392 | HeapEntry next_entry = m_heap.read(r_read_ptr.read()); |
---|
1393 | if( next_entry.next == r_read_ptr.read() ) |
---|
1394 | { |
---|
1395 | r_read_fsm = READ_HEAP_LAST; |
---|
1396 | } |
---|
1397 | else |
---|
1398 | { |
---|
1399 | r_read_ptr = next_entry.next; |
---|
1400 | r_read_fsm = READ_HEAP_ERASE; |
---|
1401 | } |
---|
1402 | } |
---|
1403 | else |
---|
1404 | { |
---|
1405 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
1406 | << " READ_HEAP_ERASE state" << std::endl; |
---|
1407 | std::cout << "Bad HEAP allocation" << std::endl; |
---|
1408 | exit(0); |
---|
1409 | } |
---|
1410 | break; |
---|
1411 | } |
---|
1412 | //////////////////// |
---|
1413 | case READ_HEAP_LAST: |
---|
1414 | { |
---|
1415 | if ( r_alloc_heap_fsm.read() == ALLOC_HEAP_READ ) |
---|
1416 | { |
---|
1417 | HeapEntry last_entry; |
---|
1418 | last_entry.owner.srcid = 0; |
---|
1419 | #if L1_MULTI_CACHE |
---|
1420 | last_entry.owner.cache_id = 0; |
---|
1421 | #endif |
---|
1422 | last_entry.owner.inst = false; |
---|
1423 | |
---|
1424 | if(m_heap.is_full()) |
---|
1425 | { |
---|
1426 | last_entry.next = r_read_ptr.read(); |
---|
1427 | m_heap.unset_full(); |
---|
1428 | } |
---|
1429 | else |
---|
1430 | { |
---|
1431 | last_entry.next = r_read_next_ptr.read(); |
---|
1432 | } |
---|
1433 | m_heap.write(r_read_ptr.read(),last_entry); |
---|
1434 | r_read_fsm = READ_RSP; |
---|
1435 | } |
---|
1436 | else |
---|
1437 | { |
---|
1438 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
1439 | << " READ_HEAP_LAST state" << std::endl; |
---|
1440 | std::cout << "Bad HEAP allocation" << std::endl; |
---|
1441 | exit(0); |
---|
1442 | } |
---|
1443 | break; |
---|
1444 | } |
---|
1445 | ////////////// |
---|
1446 | case READ_RSP: // request the TGT_RSP FSM to return data |
---|
1447 | { |
---|
1448 | if( !r_read_to_tgt_rsp_req ) |
---|
1449 | { |
---|
1450 | for ( size_t i=0 ; i<m_words ; i++ ) r_read_to_tgt_rsp_data[i] = r_read_data[i]; |
---|
1451 | r_read_to_tgt_rsp_word = m_x[(vci_addr_t)m_cmd_read_addr_fifo.read()]; |
---|
1452 | r_read_to_tgt_rsp_length = m_cmd_read_length_fifo.read(); |
---|
1453 | r_read_to_tgt_rsp_srcid = m_cmd_read_srcid_fifo.read(); |
---|
1454 | r_read_to_tgt_rsp_trdid = m_cmd_read_trdid_fifo.read(); |
---|
1455 | r_read_to_tgt_rsp_pktid = m_cmd_read_pktid_fifo.read(); |
---|
1456 | cmd_read_fifo_get = true; |
---|
1457 | r_read_to_tgt_rsp_req = true; |
---|
1458 | r_read_fsm = READ_IDLE; |
---|
1459 | |
---|
1460 | #if DEBUG_MEMC_READ |
---|
1461 | if( m_debug_read_fsm ) |
---|
1462 | { |
---|
1463 | std::cout << " <MEMC.READ_RSP> Request the TGT_RSP FSM to return data:" |
---|
1464 | << " rsrcid = " << std::dec << m_cmd_read_srcid_fifo.read() |
---|
1465 | << " / address = " << std::hex << m_cmd_read_addr_fifo.read() |
---|
1466 | << " / nwords = " << std::dec << m_cmd_read_length_fifo.read() << std::endl; |
---|
1467 | } |
---|
1468 | #endif |
---|
1469 | } |
---|
1470 | break; |
---|
1471 | } |
---|
1472 | /////////////////// |
---|
1473 | case READ_TRT_LOCK: // read miss : check the Transaction Table |
---|
1474 | { |
---|
1475 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_READ ) |
---|
1476 | { |
---|
1477 | size_t index = 0; |
---|
1478 | vci_addr_t addr = (vci_addr_t)m_cmd_read_addr_fifo.read(); |
---|
1479 | bool hit_read = m_transaction_tab.hit_read(m_nline[addr], index); |
---|
1480 | bool hit_write = m_transaction_tab.hit_write(m_nline[addr]); |
---|
1481 | bool wok = !m_transaction_tab.full(index); |
---|
1482 | |
---|
1483 | if( hit_read || !wok || hit_write ) // missing line already requested or no space |
---|
1484 | { |
---|
1485 | if(!wok) m_cpt_trt_full++; |
---|
1486 | if(hit_read || hit_write) m_cpt_trt_rb++; |
---|
1487 | r_read_fsm = READ_IDLE; |
---|
1488 | } |
---|
1489 | else // missing line is requested to the XRAM |
---|
1490 | { |
---|
1491 | m_cpt_read_miss++; |
---|
1492 | r_read_trt_index = index; |
---|
1493 | r_read_fsm = READ_TRT_SET; |
---|
1494 | } |
---|
1495 | |
---|
1496 | #if DEBUG_MEMC_READ |
---|
1497 | if( m_debug_read_fsm ) |
---|
1498 | { |
---|
1499 | std::cout << " <MEMC.READ_TRT_LOCK> Check TRT:" |
---|
1500 | << " hit_read = " << hit_read |
---|
1501 | << " / hit_write = " << hit_write |
---|
1502 | << " / full = " << !wok << std::endl; |
---|
1503 | } |
---|
1504 | #endif |
---|
1505 | } |
---|
1506 | break; |
---|
1507 | } |
---|
1508 | ////////////////// |
---|
1509 | case READ_TRT_SET: // register get transaction in TRT |
---|
1510 | { |
---|
1511 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_READ ) |
---|
1512 | { |
---|
1513 | m_transaction_tab.set(r_read_trt_index.read(), |
---|
1514 | true, |
---|
1515 | m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())], |
---|
1516 | m_cmd_read_srcid_fifo.read(), |
---|
1517 | m_cmd_read_trdid_fifo.read(), |
---|
1518 | m_cmd_read_pktid_fifo.read(), |
---|
1519 | true, |
---|
1520 | m_cmd_read_length_fifo.read(), |
---|
1521 | m_x[(vci_addr_t)(m_cmd_read_addr_fifo.read())], |
---|
1522 | std::vector<be_t>(m_words,0), |
---|
1523 | std::vector<data_t>(m_words,0)); |
---|
1524 | #if DEBUG_MEMC_READ |
---|
1525 | if( m_debug_read_fsm ) |
---|
1526 | { |
---|
1527 | std::cout << " <MEMC.READ_TRT_SET> Write in Transaction Table: " << std::hex |
---|
1528 | << " address = " << std::hex << m_cmd_read_addr_fifo.read() |
---|
1529 | << " / srcid = " << std::dec << m_cmd_read_srcid_fifo.read() |
---|
1530 | << std::endl; |
---|
1531 | } |
---|
1532 | #endif |
---|
1533 | r_read_fsm = READ_TRT_REQ; |
---|
1534 | } |
---|
1535 | break; |
---|
1536 | } |
---|
1537 | ////////////////// |
---|
1538 | case READ_TRT_REQ: // consume the read request in the FIFO, |
---|
1539 | // and send it to the ixr_cmd_fsm |
---|
1540 | { |
---|
1541 | if( not r_read_to_ixr_cmd_req ) |
---|
1542 | { |
---|
1543 | cmd_read_fifo_get = true; |
---|
1544 | r_read_to_ixr_cmd_req = true; |
---|
1545 | r_read_to_ixr_cmd_nline = m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())]; |
---|
1546 | r_read_to_ixr_cmd_trdid = r_read_trt_index.read(); |
---|
1547 | r_read_fsm = READ_IDLE; |
---|
1548 | |
---|
1549 | #if DEBUG_MEMC_READ |
---|
1550 | if( m_debug_read_fsm ) |
---|
1551 | { |
---|
1552 | std::cout << " <MEMC.READ_TRT_REQ> Request GET transaction for address " |
---|
1553 | << std::hex << m_cmd_read_addr_fifo.read() << std::endl; |
---|
1554 | } |
---|
1555 | #endif |
---|
1556 | } |
---|
1557 | break; |
---|
1558 | } |
---|
1559 | } // end switch read_fsm |
---|
1560 | |
---|
1561 | /////////////////////////////////////////////////////////////////////////////////// |
---|
1562 | // WRITE FSM |
---|
1563 | /////////////////////////////////////////////////////////////////////////////////// |
---|
1564 | // The WRITE FSM handles the write bursts sent by the processors. |
---|
1565 | // All addresses in a burst must be in the same cache line. |
---|
1566 | // A complete write burst is consumed in the FIFO & copied to a local buffer. |
---|
1567 | // Then the FSM takes the lock protecting the cache directory, to check |
---|
1568 | // if the line is in the cache. |
---|
1569 | // |
---|
1570 | // - In case of HIT, the cache is updated. |
---|
1571 | // If there is no other copy, an acknowledge response is immediately |
---|
1572 | // returned to the writing processor. |
---|
1573 | // If the data is cached by other processors, a coherence transaction must |
---|
1574 | // be launched: |
---|
1575 | // It is a multicast update if the line is not in counter mode, and the processor |
---|
1576 | // takes the lock protecting the Update Table (UPT) to register this transaction. |
---|
1577 | // It is a broadcast invalidate if the line is in counter mode. |
---|
1578 | // If the UPT is full, it releases the lock(s) and retry. Then, it sends |
---|
1579 | // a multi-update request to all owners of the line (but the writer), |
---|
1580 | // through the INIT_CMD FSM. In case of coherence transaction, the WRITE FSM |
---|
1581 | // does not respond to the writing processor, as this response will be sent by |
---|
1582 | // the INIT_RSP FSM when all update responses have been received. |
---|
1583 | // |
---|
1584 | // - In case of MISS, the WRITE FSM takes the lock protecting the transaction |
---|
1585 | // table (TRT). If a read transaction to the XRAM for this line already exists, |
---|
1586 | // it writes in the TRT (write buffer). Otherwise, if a TRT entry is free, |
---|
1587 | // the WRITE FSM register a new transaction in TRT, and sends a read line request |
---|
1588 | // to the XRAM. If the TRT is full, it releases the lock, and waits. |
---|
1589 | // Finally, the WRITE FSM returns an aknowledge response to the writing processor. |
---|
1590 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
1591 | |
---|
1592 | switch ( r_write_fsm.read() ) |
---|
1593 | { |
---|
1594 | //////////////// |
---|
1595 | case WRITE_IDLE: // copy first word of a write burst in local buffer |
---|
1596 | { |
---|
1597 | if ( m_cmd_write_addr_fifo.rok() ) |
---|
1598 | { |
---|
1599 | m_cpt_write++; |
---|
1600 | m_cpt_write_cells++; |
---|
1601 | |
---|
1602 | // consume a word in the FIFO & write it in the local buffer |
---|
1603 | cmd_write_fifo_get = true; |
---|
1604 | size_t index = m_x[(vci_addr_t)(m_cmd_write_addr_fifo.read())]; |
---|
1605 | |
---|
1606 | r_write_address = (addr_t)(m_cmd_write_addr_fifo.read()); |
---|
1607 | r_write_word_index = index; |
---|
1608 | r_write_word_count = 1; |
---|
1609 | r_write_data[index] = m_cmd_write_data_fifo.read(); |
---|
1610 | r_write_srcid = m_cmd_write_srcid_fifo.read(); |
---|
1611 | r_write_trdid = m_cmd_write_trdid_fifo.read(); |
---|
1612 | r_write_pktid = m_cmd_write_pktid_fifo.read(); |
---|
1613 | |
---|
1614 | // initialize the be field for all words |
---|
1615 | for ( size_t i=0 ; i<m_words ; i++ ) |
---|
1616 | { |
---|
1617 | if ( i == index ) r_write_be[i] = m_cmd_write_be_fifo.read(); |
---|
1618 | else r_write_be[i] = 0x0; |
---|
1619 | } |
---|
1620 | |
---|
1621 | if( !((m_cmd_write_be_fifo.read() == 0x0)||(m_cmd_write_be_fifo.read() == 0xF)) ) |
---|
1622 | r_write_byte = true; |
---|
1623 | else |
---|
1624 | r_write_byte = false; |
---|
1625 | |
---|
1626 | if( m_cmd_write_eop_fifo.read() ) r_write_fsm = WRITE_DIR_LOCK; |
---|
1627 | else r_write_fsm = WRITE_NEXT; |
---|
1628 | |
---|
1629 | #if DEBUG_MEMC_WRITE |
---|
1630 | if( m_debug_write_fsm ) |
---|
1631 | { |
---|
1632 | std::cout << " <MEMC.WRITE_IDLE> Write request " |
---|
1633 | << " srcid = " << std::dec << m_cmd_write_srcid_fifo.read() |
---|
1634 | << " / address = " << std::hex << m_cmd_write_addr_fifo.read() |
---|
1635 | << " / data = " << m_cmd_write_data_fifo.read() << std::endl; |
---|
1636 | } |
---|
1637 | #endif |
---|
1638 | } |
---|
1639 | break; |
---|
1640 | } |
---|
1641 | //////////////// |
---|
1642 | case WRITE_NEXT: // copy next word of a write burst in local buffer |
---|
1643 | { |
---|
1644 | if ( m_cmd_write_addr_fifo.rok() ) |
---|
1645 | { |
---|
1646 | |
---|
1647 | #if DEBUG_MEMC_WRITE |
---|
1648 | if( m_debug_write_fsm ) |
---|
1649 | { |
---|
1650 | std::cout << " <MEMC.WRITE_NEXT> Write another word in local buffer" << std::endl; |
---|
1651 | } |
---|
1652 | #endif |
---|
1653 | m_cpt_write_cells++; |
---|
1654 | |
---|
1655 | // check that the next word is in the same cache line |
---|
1656 | if ( (m_nline[(vci_addr_t)(r_write_address.read())] != |
---|
1657 | m_nline[(vci_addr_t)(m_cmd_write_addr_fifo.read())]) ) |
---|
1658 | { |
---|
1659 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " WRITE_NEXT state" << std::endl; |
---|
1660 | std::cout << "all words in a write burst must be in same cache line" << std::endl; |
---|
1661 | exit(0); |
---|
1662 | } |
---|
1663 | |
---|
1664 | // consume a word in the FIFO & write it in the local buffer |
---|
1665 | cmd_write_fifo_get=true; |
---|
1666 | size_t index = r_write_word_index.read() + r_write_word_count.read(); |
---|
1667 | |
---|
1668 | r_write_be[index] = m_cmd_write_be_fifo.read(); |
---|
1669 | r_write_data[index] = m_cmd_write_data_fifo.read(); |
---|
1670 | r_write_word_count = r_write_word_count.read() + 1; |
---|
1671 | |
---|
1672 | if( !((m_cmd_write_be_fifo.read() == 0x0)||(m_cmd_write_be_fifo.read() == 0xF)) ) |
---|
1673 | r_write_byte = true; |
---|
1674 | |
---|
1675 | if ( m_cmd_write_eop_fifo.read() ) r_write_fsm = WRITE_DIR_LOCK; |
---|
1676 | } |
---|
1677 | break; |
---|
1678 | } |
---|
1679 | //////////////////// |
---|
1680 | case WRITE_DIR_LOCK: // access directory to check hit/miss |
---|
1681 | { |
---|
1682 | if ( r_alloc_dir_fsm.read() == ALLOC_DIR_WRITE ) |
---|
1683 | { |
---|
1684 | size_t way = 0; |
---|
1685 | DirectoryEntry entry(m_cache_directory.read(r_write_address.read(), way)); |
---|
1686 | |
---|
1687 | if ( entry.valid ) // hit |
---|
1688 | { |
---|
1689 | // copy directory entry in local buffer in case of hit |
---|
1690 | r_write_is_cnt = entry.is_cnt; |
---|
1691 | r_write_lock = entry.lock; |
---|
1692 | r_write_tag = entry.tag; |
---|
1693 | r_write_copy = entry.owner.srcid; |
---|
1694 | #if L1_MULTI_CACHE |
---|
1695 | r_write_copy_cache = entry.owner.cache_id; |
---|
1696 | #endif |
---|
1697 | r_write_copy_inst = entry.owner.inst; |
---|
1698 | r_write_count = entry.count; |
---|
1699 | r_write_ptr = entry.ptr; |
---|
1700 | r_write_way = way; |
---|
1701 | |
---|
1702 | if( entry.is_cnt && entry.count ) |
---|
1703 | { |
---|
1704 | r_write_fsm = WRITE_DIR_READ; |
---|
1705 | } |
---|
1706 | else |
---|
1707 | { |
---|
1708 | if (r_write_byte.read()) r_write_fsm = WRITE_DIR_READ; |
---|
1709 | else r_write_fsm = WRITE_DIR_HIT; |
---|
1710 | } |
---|
1711 | } |
---|
1712 | else // miss |
---|
1713 | { |
---|
1714 | r_write_fsm = WRITE_MISS_TRT_LOCK; |
---|
1715 | } |
---|
1716 | |
---|
1717 | #if DEBUG_MEMC_WRITE |
---|
1718 | if( m_debug_write_fsm ) |
---|
1719 | { |
---|
1720 | std::cout << " <MEMC.WRITE_DIR_LOCK> Check the directory: " |
---|
1721 | << " address = " << std::hex << r_write_address.read() |
---|
1722 | << " hit = " << std::dec << entry.valid |
---|
1723 | << " count = " << entry.count |
---|
1724 | << " is_cnt = " << entry.is_cnt << std::endl; |
---|
1725 | } |
---|
1726 | #endif |
---|
1727 | } |
---|
1728 | break; |
---|
1729 | } |
---|
1730 | //////////////////// |
---|
1731 | case WRITE_DIR_READ: // read the cache and complete the buffer when be!=0xF |
---|
1732 | { |
---|
1733 | // update local buffer |
---|
1734 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
1735 | size_t way = r_write_way.read(); |
---|
1736 | for(size_t i=0 ; i<m_words ; i++) |
---|
1737 | { |
---|
1738 | data_t mask = 0; |
---|
1739 | if (r_write_be[i].read() & 0x1) mask = mask | 0x000000FF; |
---|
1740 | if (r_write_be[i].read() & 0x2) mask = mask | 0x0000FF00; |
---|
1741 | if (r_write_be[i].read() & 0x4) mask = mask | 0x00FF0000; |
---|
1742 | if (r_write_be[i].read() & 0x8) mask = mask | 0xFF000000; |
---|
1743 | |
---|
1744 | // complete only if mask is not null (for energy consumption) |
---|
1745 | if ( r_write_be[i].read() || r_write_is_cnt.read() ) |
---|
1746 | { |
---|
1747 | r_write_data[i] = (r_write_data[i].read() & mask) | |
---|
1748 | (m_cache_data[way][set][i] & ~mask); |
---|
1749 | } |
---|
1750 | } // end for |
---|
1751 | |
---|
1752 | // test if a coherence broadcast is required |
---|
1753 | if( r_write_is_cnt.read() && r_write_count.read() ) r_write_fsm = WRITE_BC_TRT_LOCK; |
---|
1754 | else r_write_fsm = WRITE_DIR_HIT; |
---|
1755 | |
---|
1756 | #if DEBUG_MEMC_WRITE |
---|
1757 | if( m_debug_write_fsm ) |
---|
1758 | { |
---|
1759 | std::cout << " <MEMC.WRITE_DIR_READ> Read the cache to complete local buffer" << std::endl; |
---|
1760 | } |
---|
1761 | #endif |
---|
1762 | break; |
---|
1763 | } |
---|
1764 | /////////////////// |
---|
1765 | case WRITE_DIR_HIT: // update the cache directory |
---|
1766 | { |
---|
1767 | // update directory with Dirty bit |
---|
1768 | DirectoryEntry entry; |
---|
1769 | entry.valid = true; |
---|
1770 | entry.dirty = true; |
---|
1771 | entry.tag = r_write_tag.read(); |
---|
1772 | entry.is_cnt = r_write_is_cnt.read(); |
---|
1773 | entry.lock = r_write_lock.read(); |
---|
1774 | entry.owner.srcid = r_write_copy.read(); |
---|
1775 | #if L1_MULTI_CACHE |
---|
1776 | entry.owner.cache_id = r_write_copy_cache.read(); |
---|
1777 | #endif |
---|
1778 | entry.owner.inst = r_write_copy_inst.read(); |
---|
1779 | entry.count = r_write_count.read(); |
---|
1780 | entry.ptr = r_write_ptr.read(); |
---|
1781 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
1782 | size_t way = r_write_way.read(); |
---|
1783 | |
---|
1784 | // update directory |
---|
1785 | m_cache_directory.write(set, way, entry); |
---|
1786 | |
---|
1787 | // owner is true when the the first registered copy is the writer itself |
---|
1788 | bool owner = (((r_write_copy.read() == r_write_srcid.read()) |
---|
1789 | #if L1_MULTI_CACHE |
---|
1790 | and (r_write_copy_cache.read()==r_write_pktid.read()) |
---|
1791 | #endif |
---|
1792 | ) and not r_write_copy_inst.read()); |
---|
1793 | |
---|
1794 | // no_update is true when there is no need for coherence transaction |
---|
1795 | bool no_update = (r_write_count.read()==0) || ( owner && (r_write_count.read()==1)); |
---|
1796 | |
---|
1797 | // write data in the cache if no coherence transaction |
---|
1798 | if( no_update ) |
---|
1799 | { |
---|
1800 | for(size_t i=0 ; i<m_words ; i++) |
---|
1801 | { |
---|
1802 | if ( r_write_be[i].read() ) |
---|
1803 | { |
---|
1804 | m_cache_data[way][set][i] = r_write_data[i].read(); |
---|
1805 | |
---|
1806 | if ( m_monitor_ok ) |
---|
1807 | { |
---|
1808 | vci_addr_t address = (r_write_address.read() & ~(vci_addr_t)0x3F) | i<<2; |
---|
1809 | char buf[80]; |
---|
1810 | snprintf(buf, 80, "WRITE_DIR_HIT srcid %d", r_write_srcid.read()); |
---|
1811 | check_monitor( buf, address, r_write_data[i].read() ); |
---|
1812 | } |
---|
1813 | } |
---|
1814 | } |
---|
1815 | } |
---|
1816 | |
---|
1817 | if ( owner and not no_update ) r_write_count = r_write_count.read() - 1; |
---|
1818 | |
---|
1819 | if ( no_update ) // Write transaction completed |
---|
1820 | { |
---|
1821 | r_write_fsm = WRITE_RSP; |
---|
1822 | } |
---|
1823 | else // coherence update required |
---|
1824 | { |
---|
1825 | if( !r_write_to_init_cmd_multi_req.read() && |
---|
1826 | !r_write_to_init_cmd_brdcast_req.read() ) r_write_fsm = WRITE_UPT_LOCK; |
---|
1827 | else r_write_fsm = WRITE_WAIT; |
---|
1828 | } |
---|
1829 | |
---|
1830 | #if DEBUG_MEMC_WRITE |
---|
1831 | if( m_debug_write_fsm ) |
---|
1832 | { |
---|
1833 | if ( no_update ) |
---|
1834 | { |
---|
1835 | std::cout << " <MEMC.WRITE_DIR_HIT> Write into cache / No coherence transaction" |
---|
1836 | << std::endl; |
---|
1837 | } |
---|
1838 | else |
---|
1839 | { |
---|
1840 | std::cout << " <MEMC.WRITE_DIR_HIT> Coherence update required:" |
---|
1841 | << " is_cnt = " << r_write_is_cnt.read() |
---|
1842 | << " nb_copies = " << std::dec << r_write_count.read() << std::endl; |
---|
1843 | if (owner) |
---|
1844 | std::cout << " ... but the first copy is the writer" << std::endl; |
---|
1845 | } |
---|
1846 | } |
---|
1847 | #endif |
---|
1848 | break; |
---|
1849 | } |
---|
1850 | //////////////////// |
---|
1851 | case WRITE_UPT_LOCK: // Try to register the update request in UPT |
---|
1852 | { |
---|
1853 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_WRITE ) |
---|
1854 | { |
---|
1855 | bool wok = false; |
---|
1856 | size_t index = 0; |
---|
1857 | size_t srcid = r_write_srcid.read(); |
---|
1858 | size_t trdid = r_write_trdid.read(); |
---|
1859 | size_t pktid = r_write_pktid.read(); |
---|
1860 | addr_t nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
1861 | size_t nb_copies = r_write_count.read(); |
---|
1862 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
1863 | size_t way = r_write_way.read(); |
---|
1864 | |
---|
1865 | wok = m_update_tab.set(true, // it's an update transaction |
---|
1866 | false, // it's not a broadcast |
---|
1867 | true, // it needs a response |
---|
1868 | srcid, |
---|
1869 | trdid, |
---|
1870 | pktid, |
---|
1871 | nline, |
---|
1872 | nb_copies, |
---|
1873 | index); |
---|
1874 | if ( wok ) // write data in cache |
---|
1875 | { |
---|
1876 | for(size_t i=0 ; i<m_words ; i++) |
---|
1877 | { |
---|
1878 | if ( r_write_be[i].read() ) |
---|
1879 | { |
---|
1880 | m_cache_data[way][set][i] = r_write_data[i].read(); |
---|
1881 | |
---|
1882 | if ( m_monitor_ok ) |
---|
1883 | { |
---|
1884 | vci_addr_t address = (r_write_address.read() & ~(vci_addr_t)0x3F) | i<<2; |
---|
1885 | char buf[80]; |
---|
1886 | snprintf(buf, 80, "WRITE_UPT_LOCK srcid %d", srcid); |
---|
1887 | check_monitor(buf, address, r_write_data[i].read() ); |
---|
1888 | } |
---|
1889 | } |
---|
1890 | } |
---|
1891 | } |
---|
1892 | |
---|
1893 | #if DEBUG_MEMC_WRITE |
---|
1894 | if( m_debug_write_fsm ) |
---|
1895 | { |
---|
1896 | if ( wok ) |
---|
1897 | { |
---|
1898 | std::cout << " <MEMC.WRITE_UPT_LOCK> Register the multicast update in UPT / " |
---|
1899 | << " nb_copies = " << r_write_count.read() << std::endl; |
---|
1900 | } |
---|
1901 | } |
---|
1902 | #endif |
---|
1903 | r_write_upt_index = index; |
---|
1904 | // releases the lock protecting UPT and the DIR if no entry... |
---|
1905 | if ( wok ) r_write_fsm = WRITE_UPT_HEAP_LOCK; |
---|
1906 | else r_write_fsm = WRITE_WAIT; |
---|
1907 | } |
---|
1908 | break; |
---|
1909 | } |
---|
1910 | ///////////////////////// |
---|
1911 | case WRITE_UPT_HEAP_LOCK: // get access to heap |
---|
1912 | { |
---|
1913 | if( r_alloc_heap_fsm.read() == ALLOC_HEAP_WRITE ) |
---|
1914 | { |
---|
1915 | |
---|
1916 | #if DEBUG_MEMC_WRITE |
---|
1917 | if( m_debug_write_fsm ) |
---|
1918 | { |
---|
1919 | std::cout << " <MEMC.WRITE_UPT_HEAP_LOCK> Get acces to the HEAP" << std::endl; |
---|
1920 | } |
---|
1921 | #endif |
---|
1922 | r_write_fsm = WRITE_UPT_REQ; |
---|
1923 | } |
---|
1924 | break; |
---|
1925 | } |
---|
1926 | ////////////////// |
---|
1927 | case WRITE_UPT_REQ: // prepare the coherence ransaction for the INIT_CMD FSM |
---|
1928 | // and write the first copy in the FIFO |
---|
1929 | // send the request if only one copy |
---|
1930 | { |
---|
1931 | if( !r_write_to_init_cmd_multi_req.read() && |
---|
1932 | !r_write_to_init_cmd_brdcast_req.read() ) // no pending coherence request |
---|
1933 | { |
---|
1934 | r_write_to_init_cmd_brdcast_req = false; |
---|
1935 | r_write_to_init_cmd_trdid = r_write_upt_index.read(); |
---|
1936 | r_write_to_init_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
1937 | r_write_to_init_cmd_index = r_write_word_index.read(); |
---|
1938 | r_write_to_init_cmd_count = r_write_word_count.read(); |
---|
1939 | |
---|
1940 | for(size_t i=0; i<m_words ; i++) r_write_to_init_cmd_be[i]=r_write_be[i].read(); |
---|
1941 | |
---|
1942 | size_t min = r_write_word_index.read(); |
---|
1943 | size_t max = r_write_word_index.read() + r_write_word_count.read(); |
---|
1944 | for (size_t i=min ; i<max ; i++) r_write_to_init_cmd_data[i] = r_write_data[i]; |
---|
1945 | |
---|
1946 | if( (r_write_copy.read() != r_write_srcid.read()) or |
---|
1947 | #if L1_MULTI_CACHE |
---|
1948 | (r_write_copy_cache.read() != r_write_pktid.read()) or |
---|
1949 | #endif |
---|
1950 | r_write_copy_inst.read() ) |
---|
1951 | { |
---|
1952 | // put the first srcid in the fifo |
---|
1953 | write_to_init_cmd_fifo_put = true; |
---|
1954 | write_to_init_cmd_fifo_inst = r_write_copy_inst.read(); |
---|
1955 | write_to_init_cmd_fifo_srcid = r_write_copy.read(); |
---|
1956 | #if L1_MULTI_CACHE |
---|
1957 | write_to_init_cmd_fifo_cache_id= r_write_copy_cache.read(); |
---|
1958 | #endif |
---|
1959 | if(r_write_count.read() == 1) |
---|
1960 | { |
---|
1961 | r_write_fsm = WRITE_IDLE; |
---|
1962 | r_write_to_init_cmd_multi_req = true; |
---|
1963 | } |
---|
1964 | else |
---|
1965 | { |
---|
1966 | r_write_fsm = WRITE_UPT_NEXT; |
---|
1967 | r_write_to_dec = false; |
---|
1968 | |
---|
1969 | } |
---|
1970 | } |
---|
1971 | else |
---|
1972 | { |
---|
1973 | r_write_fsm = WRITE_UPT_NEXT; |
---|
1974 | r_write_to_dec = false; |
---|
1975 | } |
---|
1976 | |
---|
1977 | #if DEBUG_MEMC_WRITE |
---|
1978 | if( m_debug_write_fsm ) |
---|
1979 | { |
---|
1980 | std::cout << " <MEMC.WRITE_UPT_REQ> Post first request to INIT_CMD FSM" |
---|
1981 | << " / srcid = " << std::dec << r_write_copy.read() |
---|
1982 | << " / inst = " << std::dec << r_write_copy_inst.read() << std::endl; |
---|
1983 | if ( r_write_count.read() == 1) |
---|
1984 | std::cout << " ... and this is the last" << std::endl; |
---|
1985 | } |
---|
1986 | #endif |
---|
1987 | } |
---|
1988 | break; |
---|
1989 | } |
---|
1990 | /////////////////// |
---|
1991 | case WRITE_UPT_NEXT: // continue the multi-update request to INIT_CMD fsm |
---|
1992 | // when there is copies in the heap. |
---|
1993 | // if one copy in the heap is the writer itself |
---|
1994 | // the corresponding SRCID should not be written in the fifo, |
---|
1995 | // but the UPT counter must be decremented. |
---|
1996 | // As this decrement is done in the WRITE_UPT_DEC state, |
---|
1997 | // after the last copy has been found, the decrement request |
---|
1998 | // must be registered in the r_write_to_dec flip-flop. |
---|
1999 | { |
---|
2000 | HeapEntry entry = m_heap.read(r_write_ptr.read()); |
---|
2001 | |
---|
2002 | bool dec_upt_counter; |
---|
2003 | |
---|
2004 | if( (entry.owner.srcid != r_write_srcid.read()) or |
---|
2005 | #if L1_MULTI_CACHE |
---|
2006 | (entry.owner.cache_id != r_write_pktid.read()) or |
---|
2007 | #endif |
---|
2008 | entry.owner.inst) // put te next srcid in the fifo |
---|
2009 | { |
---|
2010 | dec_upt_counter = false; |
---|
2011 | write_to_init_cmd_fifo_put = true; |
---|
2012 | write_to_init_cmd_fifo_inst = entry.owner.inst; |
---|
2013 | write_to_init_cmd_fifo_srcid = entry.owner.srcid; |
---|
2014 | #if L1_MULTI_CACHE |
---|
2015 | write_to_init_cmd_fifo_cache_id = entry.owner.cache_id; |
---|
2016 | #endif |
---|
2017 | |
---|
2018 | #if DEBUG_MEMC_WRITE |
---|
2019 | if( m_debug_write_fsm ) |
---|
2020 | { |
---|
2021 | std::cout << " <MEMC.WRITE_UPT_NEXT> Post another request to INIT_CMD FSM" |
---|
2022 | << " / heap_index = " << std::dec << r_write_ptr.read() |
---|
2023 | << " / srcid = " << std::dec << r_write_copy.read() |
---|
2024 | << " / inst = " << std::dec << r_write_copy_inst.read() << std::endl; |
---|
2025 | if( entry.next == r_write_ptr.read() ) |
---|
2026 | std::cout << " ... and this is the last" << std::endl; |
---|
2027 | } |
---|
2028 | #endif |
---|
2029 | } |
---|
2030 | else // the UPT counter must be decremented |
---|
2031 | { |
---|
2032 | dec_upt_counter = true; |
---|
2033 | |
---|
2034 | #if DEBUG_MEMC_WRITE |
---|
2035 | if( m_debug_write_fsm ) |
---|
2036 | { |
---|
2037 | std::cout << " <MEMC.WRITE_UPT_NEXT> Skip one entry in heap matching the writer" |
---|
2038 | << " / heap_index = " << std::dec << r_write_ptr.read() |
---|
2039 | << " / srcid = " << std::dec << r_write_copy.read() |
---|
2040 | << " / inst = " << std::dec << r_write_copy_inst.read() << std::endl; |
---|
2041 | if( entry.next == r_write_ptr.read() ) |
---|
2042 | std::cout << " ... and this is the last" << std::endl; |
---|
2043 | } |
---|
2044 | #endif |
---|
2045 | } |
---|
2046 | |
---|
2047 | // register the possible UPT decrement request |
---|
2048 | r_write_to_dec = dec_upt_counter or r_write_to_dec.read(); |
---|
2049 | |
---|
2050 | if( not m_write_to_init_cmd_inst_fifo.wok() ) |
---|
2051 | { |
---|
2052 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " WRITE_UPT_NEXT state" << std::endl |
---|
2053 | << "The write_to_init_cmd_fifo should not be full" << std::endl |
---|
2054 | << "as the depth should be larger than the max number of copies" << std::endl; |
---|
2055 | exit(0); |
---|
2056 | } |
---|
2057 | |
---|
2058 | r_write_ptr = entry.next; |
---|
2059 | |
---|
2060 | if( entry.next == r_write_ptr.read() ) // last copy |
---|
2061 | { |
---|
2062 | r_write_to_init_cmd_multi_req = true; |
---|
2063 | if( r_write_to_dec.read() or dec_upt_counter) r_write_fsm = WRITE_UPT_DEC; |
---|
2064 | else r_write_fsm = WRITE_IDLE; |
---|
2065 | } |
---|
2066 | break; |
---|
2067 | } |
---|
2068 | ////////////////// |
---|
2069 | case WRITE_UPT_DEC: // If the initial writer has a copy, it should not |
---|
2070 | // receive an update request, but the counter in the |
---|
2071 | // update table must be decremented by the INIT_RSP FSM. |
---|
2072 | { |
---|
2073 | if ( !r_write_to_init_rsp_req.read() ) |
---|
2074 | { |
---|
2075 | r_write_to_init_rsp_req = true; |
---|
2076 | r_write_to_init_rsp_upt_index = r_write_upt_index.read(); |
---|
2077 | r_write_fsm = WRITE_IDLE; |
---|
2078 | } |
---|
2079 | break; |
---|
2080 | } |
---|
2081 | /////////////// |
---|
2082 | case WRITE_RSP: // Post a request to TGT_RSP FSM to acknowledge the write |
---|
2083 | // In order to increase the Write requests throughput, |
---|
2084 | // we don't wait to return in the IDLE state to consume |
---|
2085 | // a new request in the write FIFO |
---|
2086 | { |
---|
2087 | if ( !r_write_to_tgt_rsp_req.read() ) |
---|
2088 | { |
---|
2089 | // post the request to TGT_RSP_FSM |
---|
2090 | r_write_to_tgt_rsp_req = true; |
---|
2091 | r_write_to_tgt_rsp_srcid = r_write_srcid.read(); |
---|
2092 | r_write_to_tgt_rsp_trdid = r_write_trdid.read(); |
---|
2093 | r_write_to_tgt_rsp_pktid = r_write_pktid.read(); |
---|
2094 | |
---|
2095 | // try to get a new write request from the FIFO |
---|
2096 | if ( m_cmd_write_addr_fifo.rok() ) |
---|
2097 | { |
---|
2098 | m_cpt_write++; |
---|
2099 | m_cpt_write_cells++; |
---|
2100 | |
---|
2101 | // consume a word in the FIFO & write it in the local buffer |
---|
2102 | cmd_write_fifo_get = true; |
---|
2103 | size_t index = m_x[(vci_addr_t)(m_cmd_write_addr_fifo.read())]; |
---|
2104 | |
---|
2105 | r_write_address = (addr_t)(m_cmd_write_addr_fifo.read()); |
---|
2106 | r_write_word_index = index; |
---|
2107 | r_write_word_count = 1; |
---|
2108 | r_write_data[index] = m_cmd_write_data_fifo.read(); |
---|
2109 | r_write_srcid = m_cmd_write_srcid_fifo.read(); |
---|
2110 | r_write_trdid = m_cmd_write_trdid_fifo.read(); |
---|
2111 | r_write_pktid = m_cmd_write_pktid_fifo.read(); |
---|
2112 | |
---|
2113 | // initialize the be field for all words |
---|
2114 | for ( size_t i=0 ; i<m_words ; i++ ) |
---|
2115 | { |
---|
2116 | if ( i == index ) r_write_be[i] = m_cmd_write_be_fifo.read(); |
---|
2117 | else r_write_be[i] = 0x0; |
---|
2118 | } |
---|
2119 | |
---|
2120 | if( !((m_cmd_write_be_fifo.read() == 0x0)||(m_cmd_write_be_fifo.read() == 0xF)) ) |
---|
2121 | r_write_byte = true; |
---|
2122 | else |
---|
2123 | r_write_byte = false; |
---|
2124 | |
---|
2125 | if( m_cmd_write_eop_fifo.read() ) r_write_fsm = WRITE_DIR_LOCK; |
---|
2126 | else r_write_fsm = WRITE_NEXT; |
---|
2127 | } |
---|
2128 | else |
---|
2129 | { |
---|
2130 | r_write_fsm = WRITE_IDLE; |
---|
2131 | } |
---|
2132 | |
---|
2133 | #if DEBUG_MEMC_WRITE |
---|
2134 | if( m_debug_write_fsm ) |
---|
2135 | { |
---|
2136 | std::cout << " <MEMC.WRITE_RSP> Post a request to TGT_RSP FSM: rsrcid = " |
---|
2137 | << std::dec << r_write_srcid.read() << std::endl; |
---|
2138 | if ( m_cmd_write_addr_fifo.rok() ) |
---|
2139 | { |
---|
2140 | std::cout << " New Write request: " |
---|
2141 | << " srcid = " << std::dec << m_cmd_write_srcid_fifo.read() |
---|
2142 | << " / address = " << std::hex << m_cmd_write_addr_fifo.read() |
---|
2143 | << " / data = " << m_cmd_write_data_fifo.read() << std::endl; |
---|
2144 | } |
---|
2145 | } |
---|
2146 | #endif |
---|
2147 | } |
---|
2148 | break; |
---|
2149 | } |
---|
2150 | ///////////////////////// |
---|
2151 | case WRITE_MISS_TRT_LOCK: // Miss : check Transaction Table |
---|
2152 | { |
---|
2153 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) |
---|
2154 | { |
---|
2155 | |
---|
2156 | #if DEBUG_MEMC_WRITE |
---|
2157 | if( m_debug_write_fsm ) |
---|
2158 | { |
---|
2159 | std::cout << " <MEMC.WRITE_MISS_TRT_LOCK> Check the TRT" << std::endl; |
---|
2160 | } |
---|
2161 | #endif |
---|
2162 | size_t hit_index = 0; |
---|
2163 | size_t wok_index = 0; |
---|
2164 | vci_addr_t addr = (vci_addr_t)r_write_address.read(); |
---|
2165 | bool hit_read = m_transaction_tab.hit_read(m_nline[addr], hit_index); |
---|
2166 | bool hit_write = m_transaction_tab.hit_write(m_nline[addr]); |
---|
2167 | bool wok = !m_transaction_tab.full(wok_index); |
---|
2168 | |
---|
2169 | if ( hit_read ) // register the modified data in TRT |
---|
2170 | { |
---|
2171 | r_write_trt_index = hit_index; |
---|
2172 | r_write_fsm = WRITE_MISS_TRT_DATA; |
---|
2173 | m_cpt_write_miss++; |
---|
2174 | } |
---|
2175 | else if ( wok && !hit_write ) // set a new entry in TRT |
---|
2176 | { |
---|
2177 | r_write_trt_index = wok_index; |
---|
2178 | r_write_fsm = WRITE_MISS_TRT_SET; |
---|
2179 | m_cpt_write_miss++; |
---|
2180 | } |
---|
2181 | else // wait an empty entry in TRT |
---|
2182 | { |
---|
2183 | r_write_fsm = WRITE_WAIT; |
---|
2184 | m_cpt_trt_full++; |
---|
2185 | } |
---|
2186 | } |
---|
2187 | break; |
---|
2188 | } |
---|
2189 | //////////////// |
---|
2190 | case WRITE_WAIT: // release the locks protecting the shared ressources |
---|
2191 | { |
---|
2192 | |
---|
2193 | #if DEBUG_MEMC_WRITE |
---|
2194 | if( m_debug_write_fsm ) |
---|
2195 | { |
---|
2196 | std::cout << " <MEMC.WRITE_WAIT> Releases the locks before retry" << std::endl; |
---|
2197 | } |
---|
2198 | #endif |
---|
2199 | r_write_fsm = WRITE_DIR_LOCK; |
---|
2200 | break; |
---|
2201 | } |
---|
2202 | //////////////////////// |
---|
2203 | case WRITE_MISS_TRT_SET: // register a new transaction in TRT (Write Buffer) |
---|
2204 | { |
---|
2205 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) |
---|
2206 | { |
---|
2207 | std::vector<be_t> be_vector; |
---|
2208 | std::vector<data_t> data_vector; |
---|
2209 | be_vector.clear(); |
---|
2210 | data_vector.clear(); |
---|
2211 | for ( size_t i=0; i<m_words; i++ ) |
---|
2212 | { |
---|
2213 | be_vector.push_back(r_write_be[i]); |
---|
2214 | data_vector.push_back(r_write_data[i]); |
---|
2215 | } |
---|
2216 | m_transaction_tab.set(r_write_trt_index.read(), |
---|
2217 | true, // read request to XRAM |
---|
2218 | m_nline[(vci_addr_t)(r_write_address.read())], |
---|
2219 | r_write_srcid.read(), |
---|
2220 | r_write_trdid.read(), |
---|
2221 | r_write_pktid.read(), |
---|
2222 | false, // not a processor read |
---|
2223 | 0, // not a single word |
---|
2224 | 0, // word index |
---|
2225 | be_vector, |
---|
2226 | data_vector); |
---|
2227 | r_write_fsm = WRITE_MISS_XRAM_REQ; |
---|
2228 | |
---|
2229 | #if DEBUG_MEMC_WRITE |
---|
2230 | if( m_debug_write_fsm ) |
---|
2231 | { |
---|
2232 | std::cout << " <MEMC.WRITE_MISS_TRT_SET> Set a new entry in TRT" << std::endl; |
---|
2233 | } |
---|
2234 | #endif |
---|
2235 | } |
---|
2236 | break; |
---|
2237 | } |
---|
2238 | ///////////////////////// |
---|
2239 | case WRITE_MISS_TRT_DATA: // update an entry in TRT (used as a Write Buffer) |
---|
2240 | { |
---|
2241 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) |
---|
2242 | { |
---|
2243 | std::vector<be_t> be_vector; |
---|
2244 | std::vector<data_t> data_vector; |
---|
2245 | be_vector.clear(); |
---|
2246 | data_vector.clear(); |
---|
2247 | for ( size_t i=0; i<m_words; i++ ) |
---|
2248 | { |
---|
2249 | be_vector.push_back(r_write_be[i]); |
---|
2250 | data_vector.push_back(r_write_data[i]); |
---|
2251 | } |
---|
2252 | m_transaction_tab.write_data_mask(r_write_trt_index.read(), |
---|
2253 | be_vector, |
---|
2254 | data_vector); |
---|
2255 | r_write_fsm = WRITE_RSP; |
---|
2256 | |
---|
2257 | #if DEBUG_MEMC_WRITE |
---|
2258 | if( m_debug_write_fsm ) |
---|
2259 | { |
---|
2260 | std::cout << " <MEMC.WRITE_MISS_TRT_DATA> Modify an existing entry in TRT" << std::endl; |
---|
2261 | m_transaction_tab.print( r_write_trt_index.read() ); |
---|
2262 | } |
---|
2263 | #endif |
---|
2264 | } |
---|
2265 | break; |
---|
2266 | } |
---|
2267 | ///////////////////////// |
---|
2268 | case WRITE_MISS_XRAM_REQ: // send a GET request to IXR_CMD FSM |
---|
2269 | { |
---|
2270 | if ( !r_write_to_ixr_cmd_req ) |
---|
2271 | { |
---|
2272 | r_write_to_ixr_cmd_req = true; |
---|
2273 | r_write_to_ixr_cmd_write = false; |
---|
2274 | r_write_to_ixr_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
2275 | r_write_to_ixr_cmd_trdid = r_write_trt_index.read(); |
---|
2276 | r_write_fsm = WRITE_RSP; |
---|
2277 | |
---|
2278 | #if DEBUG_MEMC_WRITE |
---|
2279 | if( m_debug_write_fsm ) |
---|
2280 | { |
---|
2281 | std::cout << " <MEMC.WRITE_MISS_XRAM_REQ> Post a GET request to the IXR_CMD FSM" << std::endl; |
---|
2282 | } |
---|
2283 | #endif |
---|
2284 | } |
---|
2285 | break; |
---|
2286 | } |
---|
2287 | /////////////////////// |
---|
2288 | case WRITE_BC_TRT_LOCK: // Check TRT not full |
---|
2289 | { |
---|
2290 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) |
---|
2291 | { |
---|
2292 | size_t wok_index = 0; |
---|
2293 | bool wok = !m_transaction_tab.full( wok_index ); |
---|
2294 | if ( wok ) // set a new entry in TRT |
---|
2295 | { |
---|
2296 | r_write_trt_index = wok_index; |
---|
2297 | r_write_fsm = WRITE_BC_UPT_LOCK; |
---|
2298 | } |
---|
2299 | else // wait an empty entry in TRT |
---|
2300 | { |
---|
2301 | r_write_fsm = WRITE_WAIT; |
---|
2302 | } |
---|
2303 | |
---|
2304 | #if DEBUG_MEMC_WRITE |
---|
2305 | if( m_debug_write_fsm ) |
---|
2306 | { |
---|
2307 | std::cout << " <MEMC.WRITE_BC_TRT_LOCK> Check TRT : wok = " |
---|
2308 | << wok << " / index = " << wok_index << std::endl; |
---|
2309 | } |
---|
2310 | #endif |
---|
2311 | } |
---|
2312 | break; |
---|
2313 | } |
---|
2314 | ////////////////////// |
---|
2315 | case WRITE_BC_UPT_LOCK: // register BC transaction in UPT |
---|
2316 | { |
---|
2317 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_WRITE ) |
---|
2318 | { |
---|
2319 | bool wok = false; |
---|
2320 | size_t index = 0; |
---|
2321 | size_t srcid = r_write_srcid.read(); |
---|
2322 | size_t trdid = r_write_trdid.read(); |
---|
2323 | size_t pktid = r_write_pktid.read(); |
---|
2324 | addr_t nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
2325 | size_t nb_copies = r_write_count.read(); |
---|
2326 | |
---|
2327 | wok =m_update_tab.set(false, // it's an inval transaction |
---|
2328 | true, // it's a broadcast |
---|
2329 | true, // it needs a response |
---|
2330 | srcid, |
---|
2331 | trdid, |
---|
2332 | pktid, |
---|
2333 | nline, |
---|
2334 | nb_copies, |
---|
2335 | index); |
---|
2336 | |
---|
2337 | #if DEBUG_MEMC_WRITE |
---|
2338 | if( m_debug_write_fsm ) |
---|
2339 | { |
---|
2340 | if ( wok ) |
---|
2341 | { |
---|
2342 | std::cout << " <MEMC.WRITE_BC_UPT_LOCK> Register the broadcast inval in UPT / " |
---|
2343 | << " nb_copies = " << r_write_count.read() << std::endl; |
---|
2344 | } |
---|
2345 | } |
---|
2346 | #endif |
---|
2347 | r_write_upt_index = index; |
---|
2348 | |
---|
2349 | if ( wok ) r_write_fsm = WRITE_BC_DIR_INVAL; |
---|
2350 | else r_write_fsm = WRITE_WAIT; |
---|
2351 | } |
---|
2352 | break; |
---|
2353 | } |
---|
2354 | //////////////////////// |
---|
2355 | case WRITE_BC_DIR_INVAL: // Register a put transaction to XRAM in TRT |
---|
2356 | // and invalidate the line in directory |
---|
2357 | { |
---|
2358 | if ( (r_alloc_trt_fsm.read() != ALLOC_TRT_WRITE ) || |
---|
2359 | (r_alloc_upt_fsm.read() != ALLOC_UPT_WRITE ) || |
---|
2360 | (r_alloc_dir_fsm.read() != ALLOC_DIR_WRITE ) ) |
---|
2361 | { |
---|
2362 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " WRITE_BC_DIR_INVAL state" << std::endl; |
---|
2363 | std::cout << "bad TRT, DIR, or UPT allocation" << std::endl; |
---|
2364 | exit(0); |
---|
2365 | } |
---|
2366 | |
---|
2367 | // register a write request to XRAM in TRT |
---|
2368 | m_transaction_tab.set(r_write_trt_index.read(), |
---|
2369 | false, // write request to XRAM |
---|
2370 | m_nline[(vci_addr_t)(r_write_address.read())], |
---|
2371 | 0, |
---|
2372 | 0, |
---|
2373 | 0, |
---|
2374 | false, // not a processor read |
---|
2375 | 0, // not a single word |
---|
2376 | 0, // word index |
---|
2377 | std::vector<be_t>(m_words,0), |
---|
2378 | std::vector<data_t>(m_words,0)); |
---|
2379 | // invalidate directory entry |
---|
2380 | DirectoryEntry entry; |
---|
2381 | entry.valid = false; |
---|
2382 | entry.dirty = false; |
---|
2383 | entry.tag = 0; |
---|
2384 | entry.is_cnt = false; |
---|
2385 | entry.lock = false; |
---|
2386 | entry.owner.srcid = 0; |
---|
2387 | #if L1_MULTI_CACHE |
---|
2388 | entry.owner.cache_id= 0; |
---|
2389 | #endif |
---|
2390 | entry.owner.inst = false; |
---|
2391 | entry.ptr = 0; |
---|
2392 | entry.count = 0; |
---|
2393 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
2394 | size_t way = r_write_way.read(); |
---|
2395 | |
---|
2396 | m_cache_directory.write(set, way, entry); |
---|
2397 | |
---|
2398 | #if DEBUG_MEMC_WRITE |
---|
2399 | if( m_debug_write_fsm ) |
---|
2400 | { |
---|
2401 | std::cout << " <MEMC.WRITE_BC_DIR_INVAL> Invalidate the directory entry: @ = " |
---|
2402 | << r_write_address.read() << " / register the put transaction in TRT:" << std::endl; |
---|
2403 | } |
---|
2404 | #endif |
---|
2405 | r_write_fsm = WRITE_BC_CC_SEND; |
---|
2406 | break; |
---|
2407 | } |
---|
2408 | ////////////////////// |
---|
2409 | case WRITE_BC_CC_SEND: // Post a coherence broadcast request to INIT_CMD FSM |
---|
2410 | { |
---|
2411 | if ( !r_write_to_init_cmd_multi_req.read() && !r_write_to_init_cmd_brdcast_req.read() ) |
---|
2412 | { |
---|
2413 | r_write_to_init_cmd_multi_req = false; |
---|
2414 | r_write_to_init_cmd_brdcast_req = true; |
---|
2415 | r_write_to_init_cmd_trdid = r_write_upt_index.read(); |
---|
2416 | r_write_to_init_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
2417 | r_write_to_init_cmd_index = 0; |
---|
2418 | r_write_to_init_cmd_count = 0; |
---|
2419 | |
---|
2420 | for(size_t i=0; i<m_words ; i++) |
---|
2421 | { |
---|
2422 | r_write_to_init_cmd_be[i]=0; |
---|
2423 | r_write_to_init_cmd_data[i] = 0; |
---|
2424 | } |
---|
2425 | r_write_fsm = WRITE_BC_XRAM_REQ; |
---|
2426 | |
---|
2427 | #if DEBUG_MEMC_WRITE |
---|
2428 | if( m_debug_write_fsm ) |
---|
2429 | { |
---|
2430 | std::cout << " <MEMC.WRITE_BC_CC_SEND> Post a broadcast request to INIT_CMD FSM" << std::endl; |
---|
2431 | } |
---|
2432 | #endif |
---|
2433 | } |
---|
2434 | break; |
---|
2435 | } |
---|
2436 | /////////////////////// |
---|
2437 | case WRITE_BC_XRAM_REQ: // Post a put request to IXR_CMD FSM |
---|
2438 | { |
---|
2439 | if ( !r_write_to_ixr_cmd_req ) |
---|
2440 | { |
---|
2441 | r_write_to_ixr_cmd_req = true; |
---|
2442 | r_write_to_ixr_cmd_write = true; |
---|
2443 | r_write_to_ixr_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
2444 | r_write_to_ixr_cmd_trdid = r_write_trt_index.read(); |
---|
2445 | |
---|
2446 | for(size_t i=0; i<m_words; i++) r_write_to_ixr_cmd_data[i] = r_write_data[i]; |
---|
2447 | |
---|
2448 | r_write_fsm = WRITE_IDLE; |
---|
2449 | |
---|
2450 | #if DEBUG_MEMC_WRITE |
---|
2451 | if( m_debug_write_fsm ) |
---|
2452 | { |
---|
2453 | std::cout << " <MEMC.WRITE_BC_XRAM_REQ> Post a put request to IXR_CMD FSM" << std::endl; |
---|
2454 | } |
---|
2455 | #endif |
---|
2456 | } |
---|
2457 | break; |
---|
2458 | } |
---|
2459 | } // end switch r_write_fsm |
---|
2460 | |
---|
2461 | /////////////////////////////////////////////////////////////////////// |
---|
2462 | // IXR_CMD FSM |
---|
2463 | /////////////////////////////////////////////////////////////////////// |
---|
2464 | // The IXR_CMD fsm controls the command packets to the XRAM : |
---|
2465 | // - It sends a single cell VCI read request to the XRAM in case of MISS |
---|
2466 | // posted by the READ, WRITE or SC FSMs : the TRDID field contains |
---|
2467 | // the Transaction Tab index. |
---|
2468 | // The VCI response is a multi-cell packet : the N cells contain |
---|
2469 | // the N data words. |
---|
2470 | // - It sends a multi-cell VCI write when the XRAM_RSP FSM, WRITE FSM |
---|
2471 | // or SC FSM request to save a dirty line to the XRAM. |
---|
2472 | // The VCI response is a single cell packet. |
---|
2473 | // This FSM handles requests from the READ, WRITE, SC & XRAM_RSP FSMs |
---|
2474 | // with a round-robin priority. |
---|
2475 | //////////////////////////////////////////////////////////////////////// |
---|
2476 | |
---|
2477 | switch ( r_ixr_cmd_fsm.read() ) |
---|
2478 | { |
---|
2479 | //////////////////////// |
---|
2480 | case IXR_CMD_READ_IDLE: |
---|
2481 | if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
2482 | else if ( r_sc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_SC_NLINE; |
---|
2483 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
2484 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
2485 | break; |
---|
2486 | //////////////////////// |
---|
2487 | case IXR_CMD_WRITE_IDLE: |
---|
2488 | if ( r_sc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_SC_NLINE; |
---|
2489 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
2490 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
2491 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
2492 | break; |
---|
2493 | //////////////////////// |
---|
2494 | case IXR_CMD_SC_IDLE: |
---|
2495 | if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
2496 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
2497 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
2498 | else if ( r_sc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_SC_NLINE; |
---|
2499 | break; |
---|
2500 | //////////////////////// |
---|
2501 | case IXR_CMD_XRAM_IDLE: |
---|
2502 | if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
2503 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
2504 | else if ( r_sc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_SC_NLINE; |
---|
2505 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
2506 | break; |
---|
2507 | ///////////////////////// // send a get request to XRAM |
---|
2508 | case IXR_CMD_READ_NLINE: |
---|
2509 | if ( p_vci_ixr.cmdack ) |
---|
2510 | { |
---|
2511 | r_ixr_cmd_fsm = IXR_CMD_READ_IDLE; |
---|
2512 | r_read_to_ixr_cmd_req = false; |
---|
2513 | |
---|
2514 | #if DEBUG_MEMC_IXR_CMD |
---|
2515 | if( m_debug_ixr_cmd_fsm ) |
---|
2516 | { |
---|
2517 | std::cout << " <MEMC.IXR_CMD_READ_NLINE> Send a get request to xram" << std::endl; |
---|
2518 | } |
---|
2519 | #endif |
---|
2520 | } |
---|
2521 | break; |
---|
2522 | ////////////////////////// |
---|
2523 | case IXR_CMD_WRITE_NLINE: // send a put or get command to XRAM |
---|
2524 | if ( p_vci_ixr.cmdack ) |
---|
2525 | { |
---|
2526 | if( r_write_to_ixr_cmd_write.read()) |
---|
2527 | { |
---|
2528 | if ( r_ixr_cmd_cpt.read() == (m_words - 1) ) |
---|
2529 | { |
---|
2530 | r_ixr_cmd_cpt = 0; |
---|
2531 | r_ixr_cmd_fsm = IXR_CMD_WRITE_IDLE; |
---|
2532 | r_write_to_ixr_cmd_req = false; |
---|
2533 | } |
---|
2534 | else |
---|
2535 | { |
---|
2536 | r_ixr_cmd_cpt = r_ixr_cmd_cpt + 1; |
---|
2537 | } |
---|
2538 | |
---|
2539 | #if DEBUG_MEMC_IXR_CMD |
---|
2540 | if( m_debug_ixr_cmd_fsm ) |
---|
2541 | { |
---|
2542 | std::cout << " <MEMC.IXR_CMD_WRITE_NLINE> Send a put request to xram" << std::endl; |
---|
2543 | } |
---|
2544 | #endif |
---|
2545 | } |
---|
2546 | else |
---|
2547 | { |
---|
2548 | r_ixr_cmd_fsm = IXR_CMD_WRITE_IDLE; |
---|
2549 | r_write_to_ixr_cmd_req = false; |
---|
2550 | |
---|
2551 | #if DEBUG_MEMC_IXR_CMD |
---|
2552 | if( m_debug_ixr_cmd_fsm ) |
---|
2553 | { |
---|
2554 | std::cout << " <MEMC.IXR_CMD_WRITE_NLINE> Send a get request to xram" << std::endl; |
---|
2555 | } |
---|
2556 | #endif |
---|
2557 | } |
---|
2558 | } |
---|
2559 | break; |
---|
2560 | ////////////////////// |
---|
2561 | case IXR_CMD_SC_NLINE: // send a put or get command to XRAM |
---|
2562 | if ( p_vci_ixr.cmdack ) |
---|
2563 | { |
---|
2564 | if( r_sc_to_ixr_cmd_write.read()) |
---|
2565 | { |
---|
2566 | if ( r_ixr_cmd_cpt.read() == (m_words - 1) ) |
---|
2567 | { |
---|
2568 | r_ixr_cmd_cpt = 0; |
---|
2569 | r_ixr_cmd_fsm = IXR_CMD_SC_IDLE; |
---|
2570 | r_sc_to_ixr_cmd_req = false; |
---|
2571 | } |
---|
2572 | else |
---|
2573 | { |
---|
2574 | r_ixr_cmd_cpt = r_ixr_cmd_cpt + 1; |
---|
2575 | } |
---|
2576 | |
---|
2577 | #if DEBUG_MEMC_IXR_CMD |
---|
2578 | if( m_debug_ixr_cmd_fsm ) |
---|
2579 | { |
---|
2580 | std::cout << " <MEMC.IXR_CMD_SC_NLINE> Send a put request to xram" << std::endl; |
---|
2581 | } |
---|
2582 | #endif |
---|
2583 | } |
---|
2584 | else |
---|
2585 | { |
---|
2586 | r_ixr_cmd_fsm = IXR_CMD_SC_IDLE; |
---|
2587 | r_sc_to_ixr_cmd_req = false; |
---|
2588 | |
---|
2589 | #if DEBUG_MEMC_IXR_CMD |
---|
2590 | if( m_debug_ixr_cmd_fsm ) |
---|
2591 | { |
---|
2592 | std::cout << " <MEMC.IXR_CMD_SC_NLINE> Send a get request to xram" << std::endl; |
---|
2593 | } |
---|
2594 | #endif |
---|
2595 | } |
---|
2596 | } |
---|
2597 | break; |
---|
2598 | //////////////////////// |
---|
2599 | case IXR_CMD_XRAM_DATA: // send a put command to XRAM |
---|
2600 | if ( p_vci_ixr.cmdack ) |
---|
2601 | { |
---|
2602 | if ( r_ixr_cmd_cpt.read() == (m_words - 1) ) |
---|
2603 | { |
---|
2604 | r_ixr_cmd_cpt = 0; |
---|
2605 | r_ixr_cmd_fsm = IXR_CMD_XRAM_IDLE; |
---|
2606 | r_xram_rsp_to_ixr_cmd_req = false; |
---|
2607 | } |
---|
2608 | else |
---|
2609 | { |
---|
2610 | r_ixr_cmd_cpt = r_ixr_cmd_cpt + 1; |
---|
2611 | } |
---|
2612 | |
---|
2613 | #if DEBUG_MEMC_IXR_CMD |
---|
2614 | if( m_debug_ixr_cmd_fsm ) |
---|
2615 | { |
---|
2616 | std::cout << " <MEMC.IXR_CMD_XRAM_DATA> Send a put request to xram" << std::endl; |
---|
2617 | } |
---|
2618 | #endif |
---|
2619 | } |
---|
2620 | break; |
---|
2621 | |
---|
2622 | } // end switch r_ixr_cmd_fsm |
---|
2623 | |
---|
2624 | //////////////////////////////////////////////////////////////////////////// |
---|
2625 | // IXR_RSP FSM |
---|
2626 | //////////////////////////////////////////////////////////////////////////// |
---|
2627 | // The IXR_RSP FSM receives the response packets from the XRAM, |
---|
2628 | // for both put transaction, and get transaction. |
---|
2629 | // |
---|
2630 | // - A response to a put request is a single-cell VCI packet. |
---|
2631 | // The Transaction Tab index is contained in the RTRDID field. |
---|
2632 | // The FSM takes the lock protecting the TRT, and the corresponding |
---|
2633 | // entry is erased. |
---|
2634 | // |
---|
2635 | // - A response to a get request is a multi-cell VCI packet. |
---|
2636 | // The Transaction Tab index is contained in the RTRDID field. |
---|
2637 | // The N cells contain the N words of the cache line in the RDATA field. |
---|
2638 | // The FSM takes the lock protecting the TRT to store the line in the TRT |
---|
2639 | // (taking into account the write requests already stored in the TRT). |
---|
2640 | // When the line is completely written, the corresponding rok signal is set. |
---|
2641 | /////////////////////////////////////////////////////////////////////////////// |
---|
2642 | |
---|
2643 | switch ( r_ixr_rsp_fsm.read() ) |
---|
2644 | { |
---|
2645 | ////////////////// |
---|
2646 | case IXR_RSP_IDLE: // test if it's a get or a put transaction |
---|
2647 | { |
---|
2648 | if ( p_vci_ixr.rspval.read() ) |
---|
2649 | { |
---|
2650 | r_ixr_rsp_cpt = 0; |
---|
2651 | r_ixr_rsp_trt_index = p_vci_ixr.rtrdid.read(); |
---|
2652 | if ( p_vci_ixr.reop.read() && !(p_vci_ixr.rerror.read()&0x1)) // put transaction |
---|
2653 | { |
---|
2654 | r_ixr_rsp_fsm = IXR_RSP_ACK; |
---|
2655 | |
---|
2656 | #if DEBUG_MEMC_IXR_RSP |
---|
2657 | if( m_debug_ixr_rsp_fsm ) |
---|
2658 | { |
---|
2659 | std::cout << " <MEMC.IXR_RSP_IDLE> Response from XRAM to a put transaction" << std::endl; |
---|
2660 | } |
---|
2661 | #endif |
---|
2662 | } |
---|
2663 | else // get transaction |
---|
2664 | { |
---|
2665 | r_ixr_rsp_fsm = IXR_RSP_TRT_READ; |
---|
2666 | |
---|
2667 | #if DEBUG_MEMC_IXR_RSP |
---|
2668 | if( m_debug_ixr_rsp_fsm ) |
---|
2669 | { |
---|
2670 | std::cout << " <MEMC.IXR_RSP_IDLE> Response from XRAM to a get transaction" << std::endl; |
---|
2671 | } |
---|
2672 | #endif |
---|
2673 | } |
---|
2674 | } |
---|
2675 | break; |
---|
2676 | } |
---|
2677 | //////////////////////// |
---|
2678 | case IXR_RSP_ACK: // Aknowledge the VCI response |
---|
2679 | { |
---|
2680 | if(p_vci_ixr.rspval.read()) r_ixr_rsp_fsm = IXR_RSP_TRT_ERASE; |
---|
2681 | |
---|
2682 | #if DEBUG_MEMC_IXR_RSP |
---|
2683 | if( m_debug_ixr_rsp_fsm ) |
---|
2684 | { |
---|
2685 | std::cout << " <MEMC.IXR_RSP_ACK>" << std::endl; |
---|
2686 | } |
---|
2687 | #endif |
---|
2688 | break; |
---|
2689 | } |
---|
2690 | //////////////////////// |
---|
2691 | case IXR_RSP_TRT_ERASE: // erase the entry in the TRT |
---|
2692 | { |
---|
2693 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP ) |
---|
2694 | { |
---|
2695 | m_transaction_tab.erase(r_ixr_rsp_trt_index.read()); |
---|
2696 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
2697 | |
---|
2698 | #if DEBUG_MEMC_IXR_RSP |
---|
2699 | if( m_debug_ixr_rsp_fsm ) |
---|
2700 | { |
---|
2701 | std::cout << " <MEMC.IXR_RSP_TRT_ERASE> Erase TRT entry " |
---|
2702 | << r_ixr_rsp_trt_index.read() << std::endl; |
---|
2703 | } |
---|
2704 | #endif |
---|
2705 | } |
---|
2706 | break; |
---|
2707 | } |
---|
2708 | /////////////////////// |
---|
2709 | case IXR_RSP_TRT_READ: // write data in the TRT |
---|
2710 | { |
---|
2711 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP) && p_vci_ixr.rspval ) |
---|
2712 | { |
---|
2713 | size_t index = r_ixr_rsp_trt_index.read(); |
---|
2714 | bool eop = p_vci_ixr.reop.read(); |
---|
2715 | data_t data = p_vci_ixr.rdata.read(); |
---|
2716 | bool error = (p_vci_ixr.rerror.read()&0x1 == 0); |
---|
2717 | assert(((eop == (r_ixr_rsp_cpt.read() == (m_words-1))) || p_vci_ixr.rerror.read()) |
---|
2718 | and "Error in VCI_MEM_CACHE : invalid length for a response from XRAM"); |
---|
2719 | m_transaction_tab.write_rsp(index, |
---|
2720 | r_ixr_rsp_cpt.read(), |
---|
2721 | data, |
---|
2722 | error); |
---|
2723 | r_ixr_rsp_cpt = r_ixr_rsp_cpt.read() + 1; |
---|
2724 | if ( eop ) |
---|
2725 | { |
---|
2726 | r_ixr_rsp_to_xram_rsp_rok[r_ixr_rsp_trt_index.read()]=true; |
---|
2727 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
2728 | } |
---|
2729 | |
---|
2730 | #if DEBUG_MEMC_IXR_RSP |
---|
2731 | if( m_debug_ixr_rsp_fsm ) |
---|
2732 | { |
---|
2733 | std::cout << " <MEMC.IXR_RSP_TRT_READ> Writing a word in TRT : " |
---|
2734 | << " index = " << std::dec << index |
---|
2735 | << " / word = " << r_ixr_rsp_cpt.read() |
---|
2736 | << " / data = " << std::hex << data << std::endl; |
---|
2737 | } |
---|
2738 | #endif |
---|
2739 | } |
---|
2740 | break; |
---|
2741 | } |
---|
2742 | } // end swich r_ixr_rsp_fsm |
---|
2743 | |
---|
2744 | //////////////////////////////////////////////////////////////////////////// |
---|
2745 | // XRAM_RSP FSM |
---|
2746 | //////////////////////////////////////////////////////////////////////////// |
---|
2747 | // The XRAM_RSP FSM handles the incoming cache lines from the XRAM. |
---|
2748 | // The cache line has been written in the TRT by the IXR_CMD_FSM. |
---|
2749 | // As the IXR_RSP FSM and the XRAM_RSP FSM are running in parallel, |
---|
2750 | // there is as many flip-flops r_ixr_rsp_to_xram_rsp_rok[i] |
---|
2751 | // as the number of entries in the TRT, that are handled with |
---|
2752 | // a round-robin priority... |
---|
2753 | // |
---|
2754 | // When a response is available, the corresponding TRT entry |
---|
2755 | // must be copied in a local buffer to be written in the cache. |
---|
2756 | // The FSM takes the lock protecting the TRT, and the lock protecting the DIR. |
---|
2757 | // It selects a cache slot and writes the line in the cache. |
---|
2758 | // If it was a read MISS, the XRAM_RSP FSM send a request to the TGT_RSP |
---|
2759 | // FSM to return the cache line to the registered processor. |
---|
2760 | // If there is no empty slot, a victim line is evicted, and |
---|
2761 | // invalidate requests are sent to the L1 caches containing copies. |
---|
2762 | // If this line is dirty, the XRAM_RSP FSM send a request to the IXR_CMD |
---|
2763 | // FSM to save the victim line to the XRAM, and register the write transaction |
---|
2764 | // in the TRT (using the entry previously used by the read transaction). |
---|
2765 | /////////////////////////////////////////////////////////////////////////////// |
---|
2766 | |
---|
2767 | switch ( r_xram_rsp_fsm.read() ) |
---|
2768 | { |
---|
2769 | /////////////////// |
---|
2770 | case XRAM_RSP_IDLE: // scan the XRAM responses to get the TRT index (round robin) |
---|
2771 | { |
---|
2772 | size_t ptr = r_xram_rsp_trt_index.read(); |
---|
2773 | size_t lines = m_transaction_tab_lines; |
---|
2774 | for( size_t i=0 ; i<lines ; i++) |
---|
2775 | { |
---|
2776 | size_t index=(i+ptr+1)%lines; |
---|
2777 | if ( r_ixr_rsp_to_xram_rsp_rok[index] ) |
---|
2778 | { |
---|
2779 | r_xram_rsp_trt_index = index; |
---|
2780 | r_ixr_rsp_to_xram_rsp_rok[index] = false; |
---|
2781 | r_xram_rsp_fsm = XRAM_RSP_DIR_LOCK; |
---|
2782 | |
---|
2783 | #if DEBUG_MEMC_XRAM_RSP |
---|
2784 | if( m_debug_xram_rsp_fsm ) |
---|
2785 | { |
---|
2786 | std::cout << " <MEMC.XRAM_RSP_IDLE> Available cache line in TRT:" |
---|
2787 | << " index = " << std::dec << index << std::endl; |
---|
2788 | } |
---|
2789 | #endif |
---|
2790 | break; |
---|
2791 | } |
---|
2792 | } |
---|
2793 | break; |
---|
2794 | } |
---|
2795 | /////////////////////// |
---|
2796 | case XRAM_RSP_DIR_LOCK: // Takes the lock on the directory |
---|
2797 | { |
---|
2798 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_XRAM_RSP ) |
---|
2799 | { |
---|
2800 | r_xram_rsp_fsm = XRAM_RSP_TRT_COPY; |
---|
2801 | |
---|
2802 | #if DEBUG_MEMC_XRAM_RSP |
---|
2803 | if( m_debug_xram_rsp_fsm ) |
---|
2804 | { |
---|
2805 | std::cout << " <MEMC.XRAM_RSP_DIR_LOCK> Get access to directory" << std::endl; |
---|
2806 | } |
---|
2807 | #endif |
---|
2808 | } |
---|
2809 | break; |
---|
2810 | } |
---|
2811 | /////////////////////// |
---|
2812 | case XRAM_RSP_TRT_COPY: // Takes the lock on TRT |
---|
2813 | // Copy the TRT entry in a local buffer |
---|
2814 | // and select a victim cache line |
---|
2815 | { |
---|
2816 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_XRAM_RSP) ) |
---|
2817 | { |
---|
2818 | // copy the TRT entry in the r_xram_rsp_trt_buf local buffer |
---|
2819 | size_t index = r_xram_rsp_trt_index.read(); |
---|
2820 | TransactionTabEntry trt_entry(m_transaction_tab.read(index)); |
---|
2821 | r_xram_rsp_trt_buf.copy(trt_entry); // TRT entry local buffer |
---|
2822 | |
---|
2823 | // selects & extracts a victim line from cache |
---|
2824 | size_t way = 0; |
---|
2825 | size_t set = m_y[(vci_addr_t)(trt_entry.nline * m_words * 4)]; |
---|
2826 | DirectoryEntry victim(m_cache_directory.select(set, way)); |
---|
2827 | |
---|
2828 | bool inval = (victim.count && victim.valid) ; |
---|
2829 | |
---|
2830 | // copy the victim line in a local buffer |
---|
2831 | for (size_t i=0 ; i<m_words ; i++) |
---|
2832 | r_xram_rsp_victim_data[i] = m_cache_data[way][set][i]; |
---|
2833 | r_xram_rsp_victim_copy = victim.owner.srcid; |
---|
2834 | #if L1_MULTI_CACHE |
---|
2835 | r_xram_rsp_victim_copy_cache= victim.owner.cache_id; |
---|
2836 | #endif |
---|
2837 | r_xram_rsp_victim_copy_inst = victim.owner.inst; |
---|
2838 | r_xram_rsp_victim_count = victim.count; |
---|
2839 | r_xram_rsp_victim_ptr = victim.ptr; |
---|
2840 | r_xram_rsp_victim_way = way; |
---|
2841 | r_xram_rsp_victim_set = set; |
---|
2842 | r_xram_rsp_victim_nline = victim.tag*m_sets + set; |
---|
2843 | r_xram_rsp_victim_is_cnt = victim.is_cnt; |
---|
2844 | r_xram_rsp_victim_inval = inval ; |
---|
2845 | r_xram_rsp_victim_dirty = victim.dirty; |
---|
2846 | |
---|
2847 | if(!trt_entry.rerror) r_xram_rsp_fsm = XRAM_RSP_INVAL_LOCK; |
---|
2848 | else r_xram_rsp_fsm = XRAM_RSP_ERROR_ERASE; |
---|
2849 | |
---|
2850 | #if DEBUG_MEMC_XRAM_RSP |
---|
2851 | if( m_debug_xram_rsp_fsm ) |
---|
2852 | { |
---|
2853 | std::cout << " <MEMC.XRAM_RSP_TRT_COPY> Select a slot: " |
---|
2854 | << " way = " << std::dec << way |
---|
2855 | << " / set = " << set |
---|
2856 | << " / inval_required = " << inval << std::endl; |
---|
2857 | } |
---|
2858 | #endif |
---|
2859 | } |
---|
2860 | break; |
---|
2861 | } |
---|
2862 | ///////////////////////// |
---|
2863 | case XRAM_RSP_INVAL_LOCK: // check a possible pending inval |
---|
2864 | { |
---|
2865 | if ( r_alloc_upt_fsm == ALLOC_UPT_XRAM_RSP ) |
---|
2866 | { |
---|
2867 | size_t index; |
---|
2868 | if (m_update_tab.search_inval(r_xram_rsp_trt_buf.nline, index)) |
---|
2869 | { |
---|
2870 | r_xram_rsp_fsm = XRAM_RSP_INVAL_WAIT; |
---|
2871 | |
---|
2872 | #if DEBUG_MEMC_XRAM_RSP |
---|
2873 | if( m_debug_xram_rsp_fsm ) |
---|
2874 | { |
---|
2875 | std::cout << " <MEMC.XRAM_RSP_INVAL_LOCK> Get acces to UPT," |
---|
2876 | << " but an invalidation is already registered at this address" << std::endl; |
---|
2877 | m_update_tab.print(); |
---|
2878 | } |
---|
2879 | #endif |
---|
2880 | |
---|
2881 | } |
---|
2882 | else if (m_update_tab.is_full() && r_xram_rsp_victim_inval.read()) |
---|
2883 | { |
---|
2884 | r_xram_rsp_fsm = XRAM_RSP_INVAL_WAIT; |
---|
2885 | |
---|
2886 | #if DEBUG_MEMC_XRAM_RSP |
---|
2887 | if( m_debug_xram_rsp_fsm ) |
---|
2888 | { |
---|
2889 | std::cout << " <MEMC.XRAM_RSP_INVAL_LOCK> Get acces to UPT," |
---|
2890 | << " but the table is full" << std::endl; |
---|
2891 | m_update_tab.print(); |
---|
2892 | } |
---|
2893 | #endif |
---|
2894 | } |
---|
2895 | else |
---|
2896 | { |
---|
2897 | r_xram_rsp_fsm = XRAM_RSP_DIR_UPDT; |
---|
2898 | |
---|
2899 | #if DEBUG_MEMC_XRAM_RSP |
---|
2900 | if( m_debug_xram_rsp_fsm ) |
---|
2901 | { |
---|
2902 | std::cout << " <MEMC.XRAM_RSP_INVAL_LOCK> Get acces to UPT" << std::endl; |
---|
2903 | } |
---|
2904 | #endif |
---|
2905 | } |
---|
2906 | } |
---|
2907 | break; |
---|
2908 | } |
---|
2909 | ///////////////////////// |
---|
2910 | case XRAM_RSP_INVAL_WAIT: // returns to DIR_LOCK to retry |
---|
2911 | { |
---|
2912 | r_xram_rsp_fsm = XRAM_RSP_DIR_LOCK; |
---|
2913 | break; |
---|
2914 | } |
---|
2915 | /////////////////////// |
---|
2916 | case XRAM_RSP_DIR_UPDT: // updates the cache (both data & directory) |
---|
2917 | // and possibly set an inval request in UPT |
---|
2918 | { |
---|
2919 | // signals generation |
---|
2920 | bool inst_read = (r_xram_rsp_trt_buf.trdid & 0x2) && r_xram_rsp_trt_buf.proc_read; |
---|
2921 | bool cached_read = (r_xram_rsp_trt_buf.trdid & 0x1) && r_xram_rsp_trt_buf.proc_read; |
---|
2922 | // update data |
---|
2923 | size_t set = r_xram_rsp_victim_set.read(); |
---|
2924 | size_t way = r_xram_rsp_victim_way.read(); |
---|
2925 | for(size_t i=0; i<m_words ; i++) |
---|
2926 | { |
---|
2927 | m_cache_data[way][set][i] = r_xram_rsp_trt_buf.wdata[i]; |
---|
2928 | |
---|
2929 | if ( m_monitor_ok ) |
---|
2930 | { |
---|
2931 | vci_addr_t address = r_xram_rsp_trt_buf.nline<<6 | i<<2; |
---|
2932 | check_monitor("XRAM_RSP_DIR_UPDT", address, r_xram_rsp_trt_buf.wdata[i]); |
---|
2933 | } |
---|
2934 | } |
---|
2935 | // compute dirty |
---|
2936 | bool dirty = false; |
---|
2937 | for(size_t i=0; i<m_words;i++) dirty = dirty || (r_xram_rsp_trt_buf.wdata_be[i] != 0); |
---|
2938 | // update directory |
---|
2939 | DirectoryEntry entry; |
---|
2940 | entry.valid = true; |
---|
2941 | entry.is_cnt = false; |
---|
2942 | entry.lock = false; |
---|
2943 | entry.dirty = dirty; |
---|
2944 | entry.tag = r_xram_rsp_trt_buf.nline / m_sets; |
---|
2945 | entry.ptr = 0; |
---|
2946 | if(cached_read) |
---|
2947 | { |
---|
2948 | entry.owner.srcid = r_xram_rsp_trt_buf.srcid; |
---|
2949 | #if L1_MULTI_CACHE |
---|
2950 | entry.owner.cache_id= r_xram_rsp_trt_buf.pktid; |
---|
2951 | #endif |
---|
2952 | entry.owner.inst = inst_read; |
---|
2953 | entry.count = 1; |
---|
2954 | } |
---|
2955 | else |
---|
2956 | { |
---|
2957 | entry.owner.srcid = 0; |
---|
2958 | #if L1_MULTI_CACHE |
---|
2959 | entry.owner.cache_id = 0; |
---|
2960 | #endif |
---|
2961 | entry.owner.inst = 0; |
---|
2962 | entry.count = 0; |
---|
2963 | } |
---|
2964 | m_cache_directory.write(set, way, entry); |
---|
2965 | |
---|
2966 | if (r_xram_rsp_victim_inval.read()) |
---|
2967 | { |
---|
2968 | bool brdcast = r_xram_rsp_victim_is_cnt.read(); |
---|
2969 | size_t index = 0; |
---|
2970 | size_t count_copies = r_xram_rsp_victim_count.read(); |
---|
2971 | |
---|
2972 | bool wok = m_update_tab.set( false, // it's an inval transaction |
---|
2973 | brdcast, // set brdcast bit |
---|
2974 | false, // it does not need a response |
---|
2975 | 0, // srcid |
---|
2976 | 0, // trdid |
---|
2977 | 0, // pktid |
---|
2978 | r_xram_rsp_victim_nline.read(), |
---|
2979 | count_copies, |
---|
2980 | index); |
---|
2981 | r_xram_rsp_upt_index = index; |
---|
2982 | |
---|
2983 | if (!wok) |
---|
2984 | { |
---|
2985 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " XRAM_RSP_HEAP_LAST state" << std::endl; |
---|
2986 | std::cout << "an update_tab entry was free but write is unsuccessful" << std::endl; |
---|
2987 | exit(0); |
---|
2988 | } |
---|
2989 | } |
---|
2990 | |
---|
2991 | #if DEBUG_MEMC_XRAM_RSP |
---|
2992 | if( m_debug_xram_rsp_fsm ) |
---|
2993 | { |
---|
2994 | std::cout << " <MEMC.XRAM_RSP_DIR_UPDT> Directory update: " |
---|
2995 | << " way = " << std::dec << way |
---|
2996 | << " / set = " << set |
---|
2997 | << " / count = " << entry.count |
---|
2998 | << " / is_cnt = " << entry.is_cnt << std::endl; |
---|
2999 | if (r_xram_rsp_victim_inval.read()) |
---|
3000 | std::cout << " Invalidation request for victim line " |
---|
3001 | << std::hex << r_xram_rsp_victim_nline.read() |
---|
3002 | << " / broadcast = " << r_xram_rsp_victim_is_cnt.read() << std::endl; |
---|
3003 | } |
---|
3004 | #endif |
---|
3005 | |
---|
3006 | // If the victim is not dirty, we don't need another XRAM put transaction, |
---|
3007 | // and we canwe erase the TRT entry |
---|
3008 | if (!r_xram_rsp_victim_dirty.read()) m_transaction_tab.erase(r_xram_rsp_trt_index.read()); |
---|
3009 | |
---|
3010 | // Next state |
---|
3011 | if ( r_xram_rsp_victim_dirty.read()) r_xram_rsp_fsm = XRAM_RSP_TRT_DIRTY; |
---|
3012 | else if ( r_xram_rsp_trt_buf.proc_read ) r_xram_rsp_fsm = XRAM_RSP_DIR_RSP; |
---|
3013 | else if ( r_xram_rsp_victim_inval.read()) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
3014 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
3015 | break; |
---|
3016 | } |
---|
3017 | //////////////////////// |
---|
3018 | case XRAM_RSP_TRT_DIRTY: // set the TRT entry (write to XRAM) if the victim is dirty |
---|
3019 | { |
---|
3020 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_XRAM_RSP ) |
---|
3021 | { |
---|
3022 | m_transaction_tab.set( r_xram_rsp_trt_index.read(), |
---|
3023 | false, // write to XRAM |
---|
3024 | r_xram_rsp_victim_nline.read(), // line index |
---|
3025 | 0, |
---|
3026 | 0, |
---|
3027 | 0, |
---|
3028 | false, |
---|
3029 | 0, |
---|
3030 | 0, |
---|
3031 | std::vector<be_t>(m_words,0), |
---|
3032 | std::vector<data_t>(m_words,0) ); |
---|
3033 | |
---|
3034 | #if DEBUG_MEMC_XRAM_RSP |
---|
3035 | if( m_debug_xram_rsp_fsm ) |
---|
3036 | { |
---|
3037 | std::cout << " <MEMC.XRAM_RSP_TRT_DIRTY> Set TRT entry for the put transaction:" |
---|
3038 | << " dirty victim line = " << r_xram_rsp_victim_nline.read() << std::endl; |
---|
3039 | } |
---|
3040 | #endif |
---|
3041 | if ( r_xram_rsp_trt_buf.proc_read ) r_xram_rsp_fsm = XRAM_RSP_DIR_RSP; |
---|
3042 | else if ( r_xram_rsp_victim_inval.read()) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
3043 | else r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
3044 | } |
---|
3045 | break; |
---|
3046 | } |
---|
3047 | ////////////////////// |
---|
3048 | case XRAM_RSP_DIR_RSP: // Request a response to TGT_RSP FSM |
---|
3049 | { |
---|
3050 | if ( !r_xram_rsp_to_tgt_rsp_req.read() ) |
---|
3051 | { |
---|
3052 | r_xram_rsp_to_tgt_rsp_srcid = r_xram_rsp_trt_buf.srcid; |
---|
3053 | r_xram_rsp_to_tgt_rsp_trdid = r_xram_rsp_trt_buf.trdid; |
---|
3054 | r_xram_rsp_to_tgt_rsp_pktid = r_xram_rsp_trt_buf.pktid; |
---|
3055 | for (size_t i=0; i < m_words; i++) r_xram_rsp_to_tgt_rsp_data[i] = r_xram_rsp_trt_buf.wdata[i]; |
---|
3056 | r_xram_rsp_to_tgt_rsp_word = r_xram_rsp_trt_buf.word_index; |
---|
3057 | r_xram_rsp_to_tgt_rsp_length = r_xram_rsp_trt_buf.read_length; |
---|
3058 | r_xram_rsp_to_tgt_rsp_rerror = false; |
---|
3059 | r_xram_rsp_to_tgt_rsp_req = true; |
---|
3060 | |
---|
3061 | if ( r_xram_rsp_victim_inval ) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
3062 | else if ( r_xram_rsp_victim_dirty ) r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
3063 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
3064 | |
---|
3065 | |
---|
3066 | #if DEBUG_MEMC_XRAM_RSP |
---|
3067 | if( m_debug_xram_rsp_fsm ) |
---|
3068 | { |
---|
3069 | std::cout << " <MEMC.XRAM_RSP_DIR_RSP> Request the TGT_RSP FSM to return data:" |
---|
3070 | << " rsrcid = " << std::dec << r_xram_rsp_trt_buf.srcid |
---|
3071 | << " / address = " << std::hex << r_xram_rsp_trt_buf.nline*m_words*4 |
---|
3072 | << " / nwords = " << std::dec << r_xram_rsp_trt_buf.read_length << std::endl; |
---|
3073 | } |
---|
3074 | #endif |
---|
3075 | } |
---|
3076 | break; |
---|
3077 | } |
---|
3078 | //////////////////// |
---|
3079 | case XRAM_RSP_INVAL: // send invalidate request to INIT_CMD FSM |
---|
3080 | { |
---|
3081 | if( !r_xram_rsp_to_init_cmd_multi_req.read() && |
---|
3082 | !r_xram_rsp_to_init_cmd_brdcast_req.read() ) |
---|
3083 | { |
---|
3084 | bool multi_req = !r_xram_rsp_victim_is_cnt.read(); |
---|
3085 | bool last_multi_req = multi_req && (r_xram_rsp_victim_count.read() == 1); |
---|
3086 | bool not_last_multi_req = multi_req && (r_xram_rsp_victim_count.read() != 1); |
---|
3087 | |
---|
3088 | r_xram_rsp_to_init_cmd_multi_req = last_multi_req; |
---|
3089 | r_xram_rsp_to_init_cmd_brdcast_req = r_xram_rsp_victim_is_cnt.read(); |
---|
3090 | r_xram_rsp_to_init_cmd_nline = r_xram_rsp_victim_nline.read(); |
---|
3091 | r_xram_rsp_to_init_cmd_trdid = r_xram_rsp_upt_index; |
---|
3092 | xram_rsp_to_init_cmd_fifo_srcid = r_xram_rsp_victim_copy.read(); |
---|
3093 | xram_rsp_to_init_cmd_fifo_inst = r_xram_rsp_victim_copy_inst.read(); |
---|
3094 | #if L1_MULTI_CACHE |
---|
3095 | xram_rsp_to_init_cmd_fifo_cache_id = r_xram_rsp_victim_copy_cache.read(); |
---|
3096 | #endif |
---|
3097 | xram_rsp_to_init_cmd_fifo_put = multi_req; |
---|
3098 | r_xram_rsp_next_ptr = r_xram_rsp_victim_ptr.read(); |
---|
3099 | |
---|
3100 | if ( r_xram_rsp_victim_dirty ) r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
3101 | else if (not_last_multi_req) r_xram_rsp_fsm = XRAM_RSP_HEAP_ERASE; |
---|
3102 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
3103 | |
---|
3104 | #if DEBUG_MEMC_XRAM_RSP |
---|
3105 | if( m_debug_xram_rsp_fsm ) |
---|
3106 | { |
---|
3107 | std::cout << " <MEMC.XRAM_RSP_INVAL> Send an inval request to INIT_CMD FSM:" |
---|
3108 | << " victim line = " << r_xram_rsp_victim_nline.read() << std::endl; |
---|
3109 | } |
---|
3110 | #endif |
---|
3111 | } |
---|
3112 | break; |
---|
3113 | } |
---|
3114 | ////////////////////////// |
---|
3115 | case XRAM_RSP_WRITE_DIRTY: // send a write request to IXR_CMD FSM |
---|
3116 | { |
---|
3117 | if ( !r_xram_rsp_to_ixr_cmd_req.read() ) |
---|
3118 | { |
---|
3119 | r_xram_rsp_to_ixr_cmd_req = true; |
---|
3120 | r_xram_rsp_to_ixr_cmd_nline = r_xram_rsp_victim_nline.read(); |
---|
3121 | r_xram_rsp_to_ixr_cmd_trdid = r_xram_rsp_trt_index.read(); |
---|
3122 | for(size_t i=0; i<m_words ; i++) r_xram_rsp_to_ixr_cmd_data[i] = r_xram_rsp_victim_data[i]; |
---|
3123 | m_cpt_write_dirty++; |
---|
3124 | |
---|
3125 | bool multi_req = !r_xram_rsp_victim_is_cnt.read() && r_xram_rsp_victim_inval.read(); |
---|
3126 | bool not_last_multi_req = multi_req && (r_xram_rsp_victim_count.read() != 1); |
---|
3127 | if ( not_last_multi_req ) r_xram_rsp_fsm = XRAM_RSP_HEAP_ERASE; |
---|
3128 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
3129 | |
---|
3130 | #if DEBUG_MEMC_XRAM_RSP |
---|
3131 | if( m_debug_xram_rsp_fsm ) |
---|
3132 | { |
---|
3133 | std::cout << " <MEMC.XRAM_RSP_WRITE_DIRTY> Send the put request to IXR_CMD FSM:" |
---|
3134 | << " victim line = " << r_xram_rsp_victim_nline.read() << std::endl; |
---|
3135 | } |
---|
3136 | #endif |
---|
3137 | } |
---|
3138 | break; |
---|
3139 | } |
---|
3140 | ///////////////////////// |
---|
3141 | case XRAM_RSP_HEAP_ERASE: // erase the list of copies and sent invalidations |
---|
3142 | { |
---|
3143 | if( r_alloc_heap_fsm.read() == ALLOC_HEAP_XRAM_RSP ) |
---|
3144 | { |
---|
3145 | HeapEntry entry = m_heap.read(r_xram_rsp_next_ptr.read()); |
---|
3146 | |
---|
3147 | xram_rsp_to_init_cmd_fifo_srcid = entry.owner.srcid; |
---|
3148 | #if L1_MULTI_CACHE |
---|
3149 | xram_rsp_to_init_cmd_fifo_cache_id = entry.owner.cache_id; |
---|
3150 | #endif |
---|
3151 | xram_rsp_to_init_cmd_fifo_inst = entry.owner.inst; |
---|
3152 | xram_rsp_to_init_cmd_fifo_put = true; |
---|
3153 | if( m_xram_rsp_to_init_cmd_inst_fifo.wok() ) |
---|
3154 | { |
---|
3155 | r_xram_rsp_next_ptr = entry.next; |
---|
3156 | if( entry.next == r_xram_rsp_next_ptr.read() ) // last copy |
---|
3157 | { |
---|
3158 | r_xram_rsp_to_init_cmd_multi_req = true; |
---|
3159 | r_xram_rsp_fsm = XRAM_RSP_HEAP_LAST; |
---|
3160 | } |
---|
3161 | else |
---|
3162 | { |
---|
3163 | r_xram_rsp_fsm = XRAM_RSP_HEAP_ERASE; |
---|
3164 | } |
---|
3165 | } |
---|
3166 | else |
---|
3167 | { |
---|
3168 | r_xram_rsp_fsm = XRAM_RSP_HEAP_ERASE; |
---|
3169 | } |
---|
3170 | |
---|
3171 | #if DEBUG_MEMC_XRAM_RSP |
---|
3172 | if( m_debug_xram_rsp_fsm ) |
---|
3173 | { |
---|
3174 | std::cout << " <MEMC.XRAM_RSP_HEAP_ERASE> Erase the list of copies:" |
---|
3175 | << " srcid = " << std::dec << entry.owner.srcid |
---|
3176 | << " / inst = " << std::dec << entry.owner.inst << std::endl; |
---|
3177 | } |
---|
3178 | #endif |
---|
3179 | } |
---|
3180 | break; |
---|
3181 | } |
---|
3182 | ///////////////////////// |
---|
3183 | case XRAM_RSP_HEAP_LAST: // last member of the list |
---|
3184 | { |
---|
3185 | if ( r_alloc_heap_fsm.read() != ALLOC_HEAP_XRAM_RSP ) |
---|
3186 | { |
---|
3187 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " XRAM_RSP_HEAP_LAST state" << std::endl; |
---|
3188 | std::cout << "bad HEAP allocation" << std::endl; |
---|
3189 | exit(0); |
---|
3190 | } |
---|
3191 | size_t free_pointer = m_heap.next_free_ptr(); |
---|
3192 | |
---|
3193 | HeapEntry last_entry; |
---|
3194 | last_entry.owner.srcid = 0; |
---|
3195 | #if L1_MULTI_CACHE |
---|
3196 | last_entry.owner.cache_id = 0; |
---|
3197 | #endif |
---|
3198 | last_entry.owner.inst = false; |
---|
3199 | if(m_heap.is_full()) |
---|
3200 | { |
---|
3201 | last_entry.next = r_xram_rsp_next_ptr.read(); |
---|
3202 | m_heap.unset_full(); |
---|
3203 | } |
---|
3204 | else |
---|
3205 | { |
---|
3206 | last_entry.next = free_pointer; |
---|
3207 | } |
---|
3208 | |
---|
3209 | m_heap.write_free_ptr(r_xram_rsp_victim_ptr.read()); |
---|
3210 | m_heap.write(r_xram_rsp_next_ptr.read(),last_entry); |
---|
3211 | |
---|
3212 | r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
3213 | |
---|
3214 | #if DEBUG_MEMC_XRAM_RSP |
---|
3215 | if( m_debug_xram_rsp_fsm ) |
---|
3216 | { |
---|
3217 | std::cout << " <MEMC.XRAM_RSP_HEAP_LAST> Heap housekeeping" << std::endl; |
---|
3218 | } |
---|
3219 | #endif |
---|
3220 | break; |
---|
3221 | } |
---|
3222 | // /////////////////////// |
---|
3223 | case XRAM_RSP_ERROR_ERASE: // erase TRT entry in case of error |
---|
3224 | { |
---|
3225 | m_transaction_tab.erase(r_xram_rsp_trt_index.read()); |
---|
3226 | |
---|
3227 | // Next state |
---|
3228 | if ( r_xram_rsp_trt_buf.proc_read ) r_xram_rsp_fsm = XRAM_RSP_ERROR_RSP; |
---|
3229 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
3230 | |
---|
3231 | #if DEBUG_MEMC_XRAM_RSP |
---|
3232 | if( m_debug_xram_rsp_fsm ) |
---|
3233 | { |
---|
3234 | std::cout << " <MEMC.XRAM_RSP_ERROR_ERASE> Error reported by XRAM / erase the TRT entry" << std::endl; |
---|
3235 | } |
---|
3236 | #endif |
---|
3237 | break; |
---|
3238 | } |
---|
3239 | //////////////////////// |
---|
3240 | case XRAM_RSP_ERROR_RSP: // Request an error response to TGT_RSP FSM |
---|
3241 | { |
---|
3242 | if ( !r_xram_rsp_to_tgt_rsp_req.read() ) |
---|
3243 | { |
---|
3244 | r_xram_rsp_to_tgt_rsp_srcid = r_xram_rsp_trt_buf.srcid; |
---|
3245 | r_xram_rsp_to_tgt_rsp_trdid = r_xram_rsp_trt_buf.trdid; |
---|
3246 | r_xram_rsp_to_tgt_rsp_pktid = r_xram_rsp_trt_buf.pktid; |
---|
3247 | for (size_t i=0; i < m_words; i++) r_xram_rsp_to_tgt_rsp_data[i] = r_xram_rsp_trt_buf.wdata[i]; |
---|
3248 | r_xram_rsp_to_tgt_rsp_word = r_xram_rsp_trt_buf.word_index; |
---|
3249 | r_xram_rsp_to_tgt_rsp_length = r_xram_rsp_trt_buf.read_length; |
---|
3250 | r_xram_rsp_to_tgt_rsp_rerror = true; |
---|
3251 | r_xram_rsp_to_tgt_rsp_req = true; |
---|
3252 | |
---|
3253 | r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
3254 | |
---|
3255 | #if DEBUG_MEMC_XRAM_RSP |
---|
3256 | if( m_debug_xram_rsp_fsm ) |
---|
3257 | { |
---|
3258 | std::cout << " <MEMC.XRAM_RSP_ERROR_RSP> Request a response error to TGT_RSP FSM:" |
---|
3259 | << " srcid = " << std::dec << r_xram_rsp_trt_buf.srcid << std::endl; |
---|
3260 | } |
---|
3261 | #endif |
---|
3262 | } |
---|
3263 | break; |
---|
3264 | } |
---|
3265 | } // end swich r_xram_rsp_fsm |
---|
3266 | |
---|
3267 | //////////////////////////////////////////////////////////////////////////////////// |
---|
3268 | // CLEANUP FSM |
---|
3269 | //////////////////////////////////////////////////////////////////////////////////// |
---|
3270 | // The CLEANUP FSM handles the cleanup request from L1 caches. |
---|
3271 | // It accesses the cache directory and the heap to update the list of copies. |
---|
3272 | //////////////////////////////////////////////////////////////////////////////////// |
---|
3273 | |
---|
3274 | |
---|
3275 | switch ( r_cleanup_fsm.read() ) |
---|
3276 | { |
---|
3277 | ////////////////// |
---|
3278 | case CLEANUP_IDLE: |
---|
3279 | { |
---|
3280 | if ( p_vci_tgt_cleanup.cmdval.read() ) |
---|
3281 | { |
---|
3282 | if (p_vci_tgt_cleanup.srcid.read() >= m_initiators ) |
---|
3283 | { |
---|
3284 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
3285 | << " CLEANUP_IDLE state" << std::endl; |
---|
3286 | std::cout << "illegal srcid for cleanup request" << std::endl; |
---|
3287 | exit(0); |
---|
3288 | } |
---|
3289 | |
---|
3290 | bool reached = false; |
---|
3291 | for ( size_t index = 0 ; index < m_ncseg && !reached ; index++ ) |
---|
3292 | { |
---|
3293 | if ( m_cseg[index]->contains((addr_t)(p_vci_tgt_cleanup.address.read())) ) |
---|
3294 | reached = true; |
---|
3295 | } |
---|
3296 | // only write request to a mapped address that are not broadcast are handled |
---|
3297 | if ( (p_vci_tgt_cleanup.cmd.read() == vci_param::CMD_WRITE) && |
---|
3298 | ((p_vci_tgt_cleanup.address.read() & 0x3) == 0) && reached) |
---|
3299 | { |
---|
3300 | addr_t line = (addr_t)(m_nline[(vci_addr_t)(p_vci_tgt_cleanup.address.read())]); |
---|
3301 | |
---|
3302 | r_cleanup_nline = line; |
---|
3303 | r_cleanup_srcid = p_vci_tgt_cleanup.srcid.read(); |
---|
3304 | r_cleanup_trdid = p_vci_tgt_cleanup.trdid.read(); |
---|
3305 | r_cleanup_pktid = p_vci_tgt_cleanup.pktid.read(); |
---|
3306 | r_cleanup_fsm = CLEANUP_DIR_LOCK; |
---|
3307 | |
---|
3308 | #if DEBUG_MEMC_CLEANUP |
---|
3309 | if( m_debug_cleanup_fsm ) |
---|
3310 | { |
---|
3311 | std::cout << " <MEMC.CLEANUP_IDLE> Cleanup request:" << std::hex |
---|
3312 | << " line = " << line * m_words * 4 |
---|
3313 | << " / owner_id = " << p_vci_tgt_cleanup.srcid.read() |
---|
3314 | << " / owner_ins = " << (p_vci_tgt_cleanup.trdid.read()&0x1) |
---|
3315 | << std::endl; |
---|
3316 | } |
---|
3317 | #endif |
---|
3318 | m_cpt_cleanup++; |
---|
3319 | } |
---|
3320 | } |
---|
3321 | break; |
---|
3322 | } |
---|
3323 | ////////////////////// |
---|
3324 | case CLEANUP_DIR_LOCK: // test directory status |
---|
3325 | { |
---|
3326 | if ( r_alloc_dir_fsm.read() == ALLOC_DIR_CLEANUP ) |
---|
3327 | { |
---|
3328 | // Read the directory |
---|
3329 | size_t way = 0; |
---|
3330 | addr_t cleanup_address = r_cleanup_nline.read() * m_words * 4; |
---|
3331 | DirectoryEntry entry = m_cache_directory.read(cleanup_address , way); |
---|
3332 | r_cleanup_is_cnt = entry.is_cnt; |
---|
3333 | r_cleanup_dirty = entry.dirty; |
---|
3334 | r_cleanup_tag = entry.tag; |
---|
3335 | r_cleanup_lock = entry.lock; |
---|
3336 | r_cleanup_way = way; |
---|
3337 | r_cleanup_copy = entry.owner.srcid; |
---|
3338 | #if L1_MULTI_CACHE |
---|
3339 | r_cleanup_copy_cache= entry.owner.cache_id; |
---|
3340 | #endif |
---|
3341 | r_cleanup_copy_inst = entry.owner.inst; |
---|
3342 | r_cleanup_count = entry.count; |
---|
3343 | r_cleanup_ptr = entry.ptr; |
---|
3344 | |
---|
3345 | if( entry.valid) // hit : the copy must be cleared |
---|
3346 | { |
---|
3347 | if ( (entry.count==1) || (entry.is_cnt) ) // no access to the heap |
---|
3348 | { |
---|
3349 | r_cleanup_fsm = CLEANUP_DIR_WRITE; |
---|
3350 | } |
---|
3351 | else // access to the heap |
---|
3352 | { |
---|
3353 | r_cleanup_fsm = CLEANUP_HEAP_LOCK; |
---|
3354 | } |
---|
3355 | } |
---|
3356 | else // miss : we must check the update table |
---|
3357 | { |
---|
3358 | r_cleanup_fsm = CLEANUP_UPT_LOCK; |
---|
3359 | } |
---|
3360 | |
---|
3361 | #if DEBUG_MEMC_CLEANUP |
---|
3362 | if( m_debug_cleanup_fsm ) |
---|
3363 | { |
---|
3364 | std::cout << " <MEMC.CLEANUP_DIR_LOCK> Test directory status: " << std::hex |
---|
3365 | << " line = " << r_cleanup_nline.read() * m_words * 4 |
---|
3366 | << " / hit = " << entry.valid |
---|
3367 | << " / dir_id = " << entry.owner.srcid |
---|
3368 | << " / dir_ins = " << entry.owner.inst |
---|
3369 | << " / search_id = " << r_cleanup_srcid.read() |
---|
3370 | << " / search_ins = " << (r_cleanup_trdid.read()&0x1) |
---|
3371 | << " / count = " << entry.count |
---|
3372 | << " / is_cnt = " << entry.is_cnt << std::endl; |
---|
3373 | } |
---|
3374 | #endif |
---|
3375 | } |
---|
3376 | break; |
---|
3377 | } |
---|
3378 | /////////////////////// |
---|
3379 | case CLEANUP_DIR_WRITE: // update the directory entry without heap access |
---|
3380 | { |
---|
3381 | if ( r_alloc_dir_fsm.read() != ALLOC_DIR_CLEANUP ) |
---|
3382 | { |
---|
3383 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
3384 | << " CLEANUP_DIR_WRITE state" |
---|
3385 | << " bad DIR allocation" << std::endl; |
---|
3386 | exit(0); |
---|
3387 | } |
---|
3388 | |
---|
3389 | size_t way = r_cleanup_way.read(); |
---|
3390 | size_t set = m_y[(vci_addr_t)(r_cleanup_nline.read()*m_words*4)]; |
---|
3391 | bool cleanup_inst = r_cleanup_trdid.read() & 0x1; |
---|
3392 | bool match_srcid = ((r_cleanup_copy.read() == r_cleanup_srcid.read()) |
---|
3393 | #if L1_MULTI_CACHE |
---|
3394 | and (r_cleanup_copy_cache.read() == r_cleanup_pktid.read()) |
---|
3395 | #endif |
---|
3396 | ); |
---|
3397 | bool match_inst = (r_cleanup_copy_inst.read() == cleanup_inst); |
---|
3398 | bool match = match_srcid && match_inst; |
---|
3399 | |
---|
3400 | // update the cache directory (for the copies) |
---|
3401 | DirectoryEntry entry; |
---|
3402 | entry.valid = true; |
---|
3403 | entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
3404 | entry.dirty = r_cleanup_dirty.read(); |
---|
3405 | entry.tag = r_cleanup_tag.read(); |
---|
3406 | entry.lock = r_cleanup_lock.read(); |
---|
3407 | entry.ptr = r_cleanup_ptr.read(); |
---|
3408 | |
---|
3409 | if ( r_cleanup_is_cnt.read() ) // counter mode |
---|
3410 | { |
---|
3411 | entry.count = r_cleanup_count.read() -1; |
---|
3412 | entry.owner.srcid = 0; |
---|
3413 | #if L1_MULTI_CACHE |
---|
3414 | entry.owner.cache_id= 0; |
---|
3415 | #endif |
---|
3416 | entry.owner.inst = 0; |
---|
3417 | // response to the cache |
---|
3418 | r_cleanup_fsm = CLEANUP_RSP; |
---|
3419 | } |
---|
3420 | else // linked_list mode |
---|
3421 | { |
---|
3422 | if ( match ) // hit |
---|
3423 | { |
---|
3424 | entry.count = 0; // no more copy |
---|
3425 | entry.owner.srcid = 0; |
---|
3426 | #if L1_MULTI_CACHE |
---|
3427 | entry.owner.cache_id=0; |
---|
3428 | #endif |
---|
3429 | entry.owner.inst = 0; |
---|
3430 | r_cleanup_fsm = CLEANUP_RSP; |
---|
3431 | } |
---|
3432 | else // miss |
---|
3433 | { |
---|
3434 | entry.count = r_cleanup_count.read(); |
---|
3435 | entry.owner.srcid = r_cleanup_copy.read(); |
---|
3436 | #if L1_MULTI_CACHE |
---|
3437 | entry.owner.cache_id = r_cleanup_copy_cache.read(); |
---|
3438 | #endif |
---|
3439 | entry.owner.inst = r_cleanup_copy_inst.read(); |
---|
3440 | r_cleanup_fsm = CLEANUP_UPT_LOCK; |
---|
3441 | } |
---|
3442 | } |
---|
3443 | m_cache_directory.write(set, way, entry); |
---|
3444 | |
---|
3445 | #if DEBUG_MEMC_CLEANUP |
---|
3446 | if( m_debug_cleanup_fsm ) |
---|
3447 | { |
---|
3448 | std::cout << " <MEMC.CLEANUP_DIR_WRITE> Update directory:" << std::hex |
---|
3449 | << " line = " << r_cleanup_nline.read() * m_words * 4 |
---|
3450 | << " / dir_id = " << entry.owner.srcid |
---|
3451 | << " / dir_ins = " << entry.owner.inst |
---|
3452 | << " / count = " << entry.count |
---|
3453 | << " / is_cnt = " << entry.is_cnt << std::endl; |
---|
3454 | } |
---|
3455 | #endif |
---|
3456 | |
---|
3457 | break; |
---|
3458 | } |
---|
3459 | /////////////////////// |
---|
3460 | case CLEANUP_HEAP_LOCK: // two cases are handled in this state: |
---|
3461 | // - the matching copy is directly in the directory |
---|
3462 | // - the matching copy is the first copy in the heap |
---|
3463 | { |
---|
3464 | if ( r_alloc_heap_fsm.read() == ALLOC_HEAP_CLEANUP ) |
---|
3465 | { |
---|
3466 | size_t way = r_cleanup_way.read(); |
---|
3467 | size_t set = m_y[(vci_addr_t)(r_cleanup_nline.read()*m_words*4)]; |
---|
3468 | HeapEntry heap_entry = m_heap.read(r_cleanup_ptr.read()); |
---|
3469 | bool last = (heap_entry.next == r_cleanup_ptr.read()); |
---|
3470 | bool cleanup_inst = r_cleanup_trdid.read() & 0x1; |
---|
3471 | |
---|
3472 | // match_dir computation |
---|
3473 | bool match_dir_srcid = (r_cleanup_copy.read() == r_cleanup_srcid.read()); |
---|
3474 | bool match_dir_inst = (r_cleanup_copy_inst.read() == cleanup_inst); |
---|
3475 | bool match_dir = match_dir_srcid and match_dir_inst; |
---|
3476 | #if L1_MULTI_CACHE |
---|
3477 | match_dir = match_dir and (r_cleanup_copy_cache.read() == r_cleanup_pktid.read()); |
---|
3478 | #endif |
---|
3479 | |
---|
3480 | // match_heap computation |
---|
3481 | bool match_heap_srcid = (heap_entry.owner.srcid == r_cleanup_srcid.read()); |
---|
3482 | bool match_heap_inst = (heap_entry.owner.inst == cleanup_inst); |
---|
3483 | bool match_heap = match_heap_srcid and match_heap_inst; |
---|
3484 | #if L1_MULTI_CACHE |
---|
3485 | match_heap = match_heap and (heap_entry.owner.cache_id == r_cleanup_pktid.read()); |
---|
3486 | #endif |
---|
3487 | |
---|
3488 | r_cleanup_prev_ptr = r_cleanup_ptr.read(); |
---|
3489 | r_cleanup_prev_srcid = heap_entry.owner.srcid; |
---|
3490 | #if L1_MULTI_CACHE |
---|
3491 | r_cleanup_prev_cache_id = heap_entry.owner.cache_id; |
---|
3492 | #endif |
---|
3493 | r_cleanup_prev_inst = heap_entry.owner.inst; |
---|
3494 | |
---|
3495 | if (match_dir) // the matching copy is registered in the directory |
---|
3496 | { |
---|
3497 | // the copy registered in the directory must be replaced |
---|
3498 | // by the first copy registered in the heap |
---|
3499 | // and the corresponding entry must be freed |
---|
3500 | DirectoryEntry dir_entry; |
---|
3501 | dir_entry.valid = true; |
---|
3502 | dir_entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
3503 | dir_entry.dirty = r_cleanup_dirty.read(); |
---|
3504 | dir_entry.tag = r_cleanup_tag.read(); |
---|
3505 | dir_entry.lock = r_cleanup_lock.read(); |
---|
3506 | dir_entry.ptr = heap_entry.next; |
---|
3507 | dir_entry.count = r_cleanup_count.read()-1; |
---|
3508 | dir_entry.owner.srcid = heap_entry.owner.srcid; |
---|
3509 | #if L1_MULTI_CACHE |
---|
3510 | dir_entry.owner.cache_id = heap_entry.owner.cache_id; |
---|
3511 | #endif |
---|
3512 | dir_entry.owner.inst = heap_entry.owner.inst; |
---|
3513 | m_cache_directory.write(set,way,dir_entry); |
---|
3514 | r_cleanup_next_ptr = r_cleanup_ptr.read(); |
---|
3515 | r_cleanup_fsm = CLEANUP_HEAP_FREE; |
---|
3516 | } |
---|
3517 | else if (match_heap) // the matching copy is the first copy in the heap |
---|
3518 | { |
---|
3519 | // The first copy in heap must be freed |
---|
3520 | // and the copy registered in directory must point to the next copy in heap |
---|
3521 | DirectoryEntry dir_entry; |
---|
3522 | dir_entry.valid = true; |
---|
3523 | dir_entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
3524 | dir_entry.dirty = r_cleanup_dirty.read(); |
---|
3525 | dir_entry.tag = r_cleanup_tag.read(); |
---|
3526 | dir_entry.lock = r_cleanup_lock.read(); |
---|
3527 | dir_entry.ptr = heap_entry.next; |
---|
3528 | dir_entry.count = r_cleanup_count.read()-1; |
---|
3529 | dir_entry.owner.srcid = r_cleanup_copy.read(); |
---|
3530 | #if L1_MULTI_CACHE |
---|
3531 | dir_entry.owner.cache_id = r_cleanup_copy_cache.read(); |
---|
3532 | #endif |
---|
3533 | dir_entry.owner.inst = r_cleanup_copy_inst.read(); |
---|
3534 | m_cache_directory.write(set,way,dir_entry); |
---|
3535 | r_cleanup_next_ptr = r_cleanup_ptr.read(); |
---|
3536 | r_cleanup_fsm = CLEANUP_HEAP_FREE; |
---|
3537 | } |
---|
3538 | else if(!last) // The matching copy is in the heap, but is not the first copy |
---|
3539 | { |
---|
3540 | // The directory entry must be modified to decrement count |
---|
3541 | DirectoryEntry dir_entry; |
---|
3542 | dir_entry.valid = true; |
---|
3543 | dir_entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
3544 | dir_entry.dirty = r_cleanup_dirty.read(); |
---|
3545 | dir_entry.tag = r_cleanup_tag.read(); |
---|
3546 | dir_entry.lock = r_cleanup_lock.read(); |
---|
3547 | dir_entry.ptr = r_cleanup_ptr.read(); |
---|
3548 | dir_entry.count = r_cleanup_count.read()-1; |
---|
3549 | dir_entry.owner.srcid = r_cleanup_copy.read(); |
---|
3550 | #if L1_MULTI_CACHE |
---|
3551 | dir_entry.owner.cache_id = r_cleanup_copy_cache.read(); |
---|
3552 | #endif |
---|
3553 | dir_entry.owner.inst = r_cleanup_copy_inst.read(); |
---|
3554 | m_cache_directory.write(set,way,dir_entry); |
---|
3555 | r_cleanup_next_ptr = heap_entry.next; |
---|
3556 | r_cleanup_fsm = CLEANUP_HEAP_SEARCH; |
---|
3557 | } |
---|
3558 | else |
---|
3559 | { |
---|
3560 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
3561 | << " CLEANUP_HEAP_LOCK state" |
---|
3562 | << " hit but copy not found" << std::endl; |
---|
3563 | exit(0); |
---|
3564 | } |
---|
3565 | |
---|
3566 | #if DEBUG_MEMC_CLEANUP |
---|
3567 | if( m_debug_cleanup_fsm ) |
---|
3568 | { |
---|
3569 | std::cout << " <MEMC.CLEANUP_HEAP_LOCK> Checks matching:" |
---|
3570 | << " line = " << r_cleanup_nline.read() * m_words * 4 |
---|
3571 | << " / dir_id = " << r_cleanup_copy.read() |
---|
3572 | << " / dir_ins = " << r_cleanup_copy_inst.read() |
---|
3573 | << " / heap_id = " << heap_entry.owner.srcid |
---|
3574 | << " / heap_ins = " << heap_entry.owner.inst |
---|
3575 | << " / search_id = " << r_cleanup_srcid.read() |
---|
3576 | << " / search_ins = " << (r_cleanup_trdid.read()&0x1) << std::endl; |
---|
3577 | } |
---|
3578 | #endif |
---|
3579 | } |
---|
3580 | break; |
---|
3581 | } |
---|
3582 | ///////////////////////// |
---|
3583 | case CLEANUP_HEAP_SEARCH: // This state is handling the case where the copy |
---|
3584 | // is in the heap, but is not the first in the linked list |
---|
3585 | { |
---|
3586 | if ( r_alloc_heap_fsm.read() != ALLOC_HEAP_CLEANUP ) |
---|
3587 | { |
---|
3588 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
3589 | << " CLEANUP_HEAP_SEARCH state" |
---|
3590 | << " bad HEAP allocation" << std::endl; |
---|
3591 | exit(0); |
---|
3592 | } |
---|
3593 | |
---|
3594 | HeapEntry heap_entry = m_heap.read(r_cleanup_next_ptr.read()); |
---|
3595 | bool last = (heap_entry.next == r_cleanup_next_ptr.read()); |
---|
3596 | bool cleanup_inst = r_cleanup_trdid.read() & 0x1; |
---|
3597 | bool match_heap_srcid = (heap_entry.owner.srcid == r_cleanup_srcid.read()); |
---|
3598 | bool match_heap_inst = (heap_entry.owner.inst == cleanup_inst); |
---|
3599 | bool match_heap = match_heap_srcid && match_heap_inst; |
---|
3600 | #if L1_MULTI_CACHE |
---|
3601 | match_heap = match_heap and (heap_entry.owner.cache_id == r_cleanup_pktid.read()); |
---|
3602 | #endif |
---|
3603 | |
---|
3604 | #if DEBUG_MEMC_CLEANUP |
---|
3605 | if( m_debug_cleanup_fsm ) |
---|
3606 | { |
---|
3607 | std::cout << " <MEMC.CLEANUP_HEAP_SEARCH> Cheks matching:" |
---|
3608 | << " line = " << r_cleanup_nline.read() * m_words * 4 |
---|
3609 | << " / heap_id = " << heap_entry.owner.srcid |
---|
3610 | << " / heap_ins = " << heap_entry.owner.inst |
---|
3611 | << " / search_id = " << r_cleanup_srcid.read() |
---|
3612 | << " / search_ins = " << (r_cleanup_trdid.read()&0x1) |
---|
3613 | << " / last = " << last << std::endl; |
---|
3614 | } |
---|
3615 | #endif |
---|
3616 | if(match_heap) // the matching copy must be removed |
---|
3617 | { |
---|
3618 | r_cleanup_ptr = heap_entry.next; // reuse ressources |
---|
3619 | r_cleanup_fsm = CLEANUP_HEAP_CLEAN; |
---|
3620 | } |
---|
3621 | else |
---|
3622 | { |
---|
3623 | if ( last ) |
---|
3624 | { |
---|
3625 | std::cout << "VCI_MEM_CACHE_ERROR " << name() |
---|
3626 | << " CLEANUP_HEAP_SEARCH state" |
---|
3627 | << " cleanup hit but copy not found" << std::endl; |
---|
3628 | exit(0); |
---|
3629 | } |
---|
3630 | else // test the next in the linked list |
---|
3631 | { |
---|
3632 | r_cleanup_prev_ptr = r_cleanup_next_ptr.read(); |
---|
3633 | r_cleanup_prev_srcid = heap_entry.owner.srcid; |
---|
3634 | #if L1_MULTI_CACHE |
---|
3635 | r_cleanup_prev_cache_id = heap_entry.owner.cache_id; |
---|
3636 | #endif |
---|
3637 | r_cleanup_prev_inst = heap_entry.owner.inst; |
---|
3638 | r_cleanup_next_ptr = heap_entry.next; |
---|
3639 | r_cleanup_fsm = CLEANUP_HEAP_SEARCH; |
---|
3640 | |
---|
3641 | #if DEBUG_MEMC_CLEANUP |
---|
3642 | if( m_debug_cleanup_fsm ) |
---|
3643 | { |
---|
3644 | std::cout << " <MEMC.CLEANUP_HEAP_SEARCH> Matching copy not found, search next:" |
---|
3645 | << " line = " << r_cleanup_nline.read() * m_words * 4 |
---|
3646 | << " / heap_id = " << heap_entry.owner.srcid |
---|
3647 | << " / heap_ins = " << heap_entry.owner.inst |
---|
3648 | << " / search_id = " << r_cleanup_srcid.read() |
---|
3649 | << " / search_ins = " << (r_cleanup_trdid.read()&0x1) << std::endl; |
---|
3650 | } |
---|
3651 | #endif |
---|
3652 | } |
---|
3653 | } |
---|
3654 | break; |
---|
3655 | } |
---|
3656 | //////////////////////// |
---|
3657 | case CLEANUP_HEAP_CLEAN: // remove a copy in the linked list |
---|
3658 | { |
---|
3659 | if ( r_alloc_heap_fsm.read() != ALLOC_HEAP_CLEANUP ) |
---|
3660 | { |
---|
3661 | std::cout << "VCI_MEM_CACHE ERROR " << name() |
---|
3662 | << " CLEANUP_HEAP_CLEAN state" |
---|
3663 | << "Bad HEAP allocation" << std::endl; |
---|
3664 | exit(0); |
---|
3665 | } |
---|
3666 | |
---|
3667 | bool last = (r_cleanup_next_ptr.read() == r_cleanup_ptr.read()); |
---|
3668 | HeapEntry heap_entry; |
---|
3669 | heap_entry.owner.srcid = r_cleanup_prev_srcid.read(); |
---|
3670 | #if L1_MULTI_CACHE |
---|
3671 | heap_entry.owner.cache_id = r_cleanup_prev_cache_id.read(); |
---|
3672 | #endif |
---|
3673 | heap_entry.owner.inst = r_cleanup_prev_inst.read(); |
---|
3674 | if(last) // this is the last entry of the list of copies |
---|
3675 | { |
---|
3676 | heap_entry.next = r_cleanup_prev_ptr.read(); |
---|
3677 | } |
---|
3678 | else // this is not the last entry |
---|
3679 | { |
---|
3680 | heap_entry.next = r_cleanup_ptr.read(); |
---|
3681 | } |
---|
3682 | m_heap.write(r_cleanup_prev_ptr.read(),heap_entry); |
---|
3683 | r_cleanup_fsm = CLEANUP_HEAP_FREE; |
---|
3684 | |
---|
3685 | #if DEBUG_MEMC_CLEANUP |
---|
3686 | if( m_debug_cleanup_fsm ) |
---|
3687 | { |
---|
3688 | std::cout << " <MEMC.CLEANUP_HEAP_SEARCH> Remove the copy in the linked list" << std::endl; |
---|
3689 | } |
---|
3690 | #endif |
---|
3691 | break; |
---|
3692 | } |
---|
3693 | /////////////////////// |
---|
3694 | case CLEANUP_HEAP_FREE: // The heap entry pointed by r_cleanup_next_ptr is freed |
---|
3695 | // and becomes the head of the list of free entries |
---|
3696 | { |
---|
3697 | if ( r_alloc_heap_fsm.read() != ALLOC_HEAP_CLEANUP ) |
---|
3698 | { |
---|
3699 | std::cout << "VCI_MEM_CACHE ERROR " << name() << " CLEANUP_HEAP_CLEAN state" << std::endl; |
---|
3700 | std::cout << "Bad HEAP allocation" << std::endl; |
---|
3701 | exit(0); |
---|
3702 | } |
---|
3703 | |
---|
3704 | HeapEntry heap_entry; |
---|
3705 | heap_entry.owner.srcid = 0; |
---|
3706 | #if L1_MULTI_CACHE |
---|
3707 | heap_entry.owner.cache_id = 0; |
---|
3708 | #endif |
---|
3709 | heap_entry.owner.inst = false; |
---|
3710 | |
---|
3711 | if(m_heap.is_full()) heap_entry.next = r_cleanup_next_ptr.read(); |
---|
3712 | else heap_entry.next = m_heap.next_free_ptr(); |
---|
3713 | m_heap.write(r_cleanup_next_ptr.read(),heap_entry); |
---|
3714 | m_heap.write_free_ptr(r_cleanup_next_ptr.read()); |
---|
3715 | m_heap.unset_full(); |
---|
3716 | r_cleanup_fsm = CLEANUP_RSP; |
---|
3717 | |
---|
3718 | #if DEBUG_MEMC_CLEANUP |
---|
3719 | if( m_debug_cleanup_fsm ) |
---|
3720 | { |
---|
3721 | std::cout << " <MEMC.CLEANUP_HEAP_SEARCH> Update the list of free entries" << std::endl; |
---|
3722 | } |
---|
3723 | #endif |
---|
3724 | break; |
---|
3725 | } |
---|
3726 | ////////////////////// |
---|
3727 | case CLEANUP_UPT_LOCK: |
---|
3728 | { |
---|
3729 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_CLEANUP ) |
---|
3730 | { |
---|
3731 | size_t index = 0; |
---|
3732 | bool hit_inval; |
---|
3733 | hit_inval = m_update_tab.search_inval(r_cleanup_nline.read(),index); |
---|
3734 | |
---|
3735 | if ( !hit_inval ) // no pending inval |
---|
3736 | { |
---|
3737 | |
---|
3738 | #if DEBUG_MEMC_CLEANUP |
---|
3739 | if( m_debug_cleanup_fsm ) |
---|
3740 | { |
---|
3741 | std::cout << " <MEMC.CLEANUP_UPT_LOCK> Unexpected cleanup with no corresponding UPT entry:" |
---|
3742 | << " address = " << std::hex << (r_cleanup_nline.read()*4*m_words) << std::endl; |
---|
3743 | } |
---|
3744 | #endif |
---|
3745 | r_cleanup_fsm = CLEANUP_RSP; |
---|
3746 | } |
---|
3747 | else // pending inval |
---|
3748 | { |
---|
3749 | r_cleanup_write_srcid = m_update_tab.srcid(index); |
---|
3750 | r_cleanup_write_trdid = m_update_tab.trdid(index); |
---|
3751 | r_cleanup_write_pktid = m_update_tab.pktid(index); |
---|
3752 | r_cleanup_need_rsp = m_update_tab.need_rsp(index); |
---|
3753 | r_cleanup_fsm = CLEANUP_UPT_WRITE; |
---|
3754 | } |
---|
3755 | r_cleanup_index.write(index) ; |
---|
3756 | } |
---|
3757 | break; |
---|
3758 | } |
---|
3759 | /////////////////////// |
---|
3760 | case CLEANUP_UPT_WRITE: // decrement response counter |
---|
3761 | { |
---|
3762 | size_t count = 0; |
---|
3763 | m_update_tab.decrement(r_cleanup_index.read(), count); |
---|
3764 | if ( count == 0 ) |
---|
3765 | { |
---|
3766 | m_update_tab.clear(r_cleanup_index.read()); |
---|
3767 | |
---|
3768 | #if DEBUG_MEMC_CLEANUP |
---|
3769 | if( m_debug_cleanup_fsm ) |
---|
3770 | { |
---|
3771 | std::cout << " <MEMC.CLEANUP_UPT_WRITE> Decrement response counter in UPT:" |
---|
3772 | << " UPT_index = " << r_cleanup_index.read() |
---|
3773 | << " rsp_count = " << count << std::endl; |
---|
3774 | } |
---|
3775 | #endif |
---|
3776 | if( r_cleanup_need_rsp.read() ) r_cleanup_fsm = CLEANUP_WRITE_RSP ; |
---|
3777 | else r_cleanup_fsm = CLEANUP_RSP; |
---|
3778 | } |
---|
3779 | else |
---|
3780 | { |
---|
3781 | r_cleanup_fsm = CLEANUP_RSP ; |
---|
3782 | } |
---|
3783 | break; |
---|
3784 | } |
---|
3785 | /////////////////////// |
---|
3786 | case CLEANUP_WRITE_RSP: // Response to a previous write on the direct network |
---|
3787 | { |
---|
3788 | if( !r_cleanup_to_tgt_rsp_req.read() ) |
---|
3789 | { |
---|
3790 | r_cleanup_to_tgt_rsp_req = true; |
---|
3791 | r_cleanup_to_tgt_rsp_srcid = r_cleanup_write_srcid.read(); |
---|
3792 | r_cleanup_to_tgt_rsp_trdid = r_cleanup_write_trdid.read(); |
---|
3793 | r_cleanup_to_tgt_rsp_pktid = r_cleanup_write_pktid.read(); |
---|
3794 | r_cleanup_fsm = CLEANUP_RSP; |
---|
3795 | |
---|
3796 | #if DEBUG_MEMC_CLEANUP |
---|
3797 | if( m_debug_cleanup_fsm ) |
---|
3798 | { |
---|
3799 | std::cout << " <MEMC.CLEANUP_WRITE_RSP> Send a response to a cleanup request:" |
---|
3800 | << " rsrcid = " << std::dec << r_cleanup_write_srcid.read() |
---|
3801 | << " / rtrdid = " << std::dec << r_cleanup_write_trdid.read() << std::endl; |
---|
3802 | } |
---|
3803 | #endif |
---|
3804 | } |
---|
3805 | break; |
---|
3806 | } |
---|
3807 | ///////////////// |
---|
3808 | case CLEANUP_RSP: // Response to a cleanup on the coherence network |
---|
3809 | { |
---|
3810 | if ( p_vci_tgt_cleanup.rspack.read() ) |
---|
3811 | { |
---|
3812 | r_cleanup_fsm = CLEANUP_IDLE; |
---|
3813 | |
---|
3814 | #if DEBUG_MEMC_CLEANUP |
---|
3815 | if( m_debug_cleanup_fsm ) |
---|
3816 | { |
---|
3817 | std::cout << " <MEMC.CLEANUP_RSP> Send the response to a cleanup request:" |
---|
3818 | << " rsrcid = " << std::dec << r_cleanup_write_srcid.read() |
---|
3819 | << " / rtrdid = " << r_cleanup_write_trdid.read() << std::endl; |
---|
3820 | } |
---|
3821 | #endif |
---|
3822 | } |
---|
3823 | break; |
---|
3824 | } |
---|
3825 | } // end switch cleanup fsm |
---|
3826 | |
---|
3827 | //////////////////////////////////////////////////////////////////////////////////// |
---|
3828 | // SC FSM |
---|
3829 | //////////////////////////////////////////////////////////////////////////////////// |
---|
3830 | // The SC FSM handles the SC (Store Conditionnal) atomic commands, |
---|
3831 | // that are handled as "compare-and-swap instructions. |
---|
3832 | // |
---|
3833 | // This command contains two or four flits: |
---|
3834 | // - In case of 32 bits atomic access, the first flit contains the value read |
---|
3835 | // by a previous LL instruction, the second flit contains the value to be writen. |
---|
3836 | // - In case of 64 bits atomic access, the 2 first flits contains the value read |
---|
3837 | // by a previous LL instruction, the 2 next flits contains the value to be writen. |
---|
3838 | // |
---|
3839 | // The target address is cachable. If it is replicated in other L1 caches |
---|
3840 | // than the writer, a coherence operation is done. |
---|
3841 | // |
---|
3842 | // It access the directory to check hit / miss. |
---|
3843 | // - In case of miss, the SC FSM must register a GET transaction in TRT. |
---|
3844 | // If a read transaction to the XRAM for this line already exists, |
---|
3845 | // or if the transaction table is full, it goes to the WAIT state |
---|
3846 | // to release the locks and try again. When the GET transaction has been |
---|
3847 | // launched, it goes to the WAIT state and try again. |
---|
3848 | // The SC request is not consumed in the FIFO until a HIT is obtained. |
---|
3849 | // - In case of hit... |
---|
3850 | /////////////////////////////////////////////////////////////////////////////////// |
---|
3851 | |
---|
3852 | switch ( r_sc_fsm.read() ) |
---|
3853 | { |
---|
3854 | ///////////// |
---|
3855 | case SC_IDLE: // fill the local rdata buffers |
---|
3856 | { |
---|
3857 | if( m_cmd_sc_addr_fifo.rok() ) |
---|
3858 | { |
---|
3859 | |
---|
3860 | #if DEBUG_MEMC_SC |
---|
3861 | if( m_debug_sc_fsm ) |
---|
3862 | { |
---|
3863 | std::cout << " <MEMC.SC_IDLE> SC command: " << std::hex |
---|
3864 | << " srcid = " << std::dec << m_cmd_sc_srcid_fifo.read() |
---|
3865 | << " addr = " << std::hex << m_cmd_sc_addr_fifo.read() |
---|
3866 | << " wdata = " << m_cmd_sc_wdata_fifo.read() |
---|
3867 | << " eop = " << std::dec << m_cmd_sc_eop_fifo.read() |
---|
3868 | << " cpt = " << std::dec << r_sc_cpt.read() << std::endl; |
---|
3869 | } |
---|
3870 | #endif |
---|
3871 | if( m_cmd_sc_eop_fifo.read() ) |
---|
3872 | { |
---|
3873 | m_cpt_sc++; |
---|
3874 | r_sc_fsm = SC_DIR_LOCK; |
---|
3875 | } |
---|
3876 | else // we keep the last word in the FIFO |
---|
3877 | { |
---|
3878 | cmd_sc_fifo_get = true; |
---|
3879 | } |
---|
3880 | // We fill the two buffers |
---|
3881 | if ( r_sc_cpt.read() < 2 ) // 32 bits access |
---|
3882 | r_sc_rdata[r_sc_cpt.read()] = m_cmd_sc_wdata_fifo.read(); |
---|
3883 | |
---|
3884 | if((r_sc_cpt.read() == 1) && m_cmd_sc_eop_fifo.read()) |
---|
3885 | r_sc_wdata = m_cmd_sc_wdata_fifo.read(); |
---|
3886 | |
---|
3887 | if( r_sc_cpt.read()>3 ) // more than 4 flits... |
---|
3888 | { |
---|
3889 | std::cout << "VCI_MEM_CACHE ERROR in SC_IDLE state : illegal SC command" |
---|
3890 | << std::endl; |
---|
3891 | exit(0); |
---|
3892 | } |
---|
3893 | |
---|
3894 | if ( r_sc_cpt.read()==2 ) |
---|
3895 | r_sc_wdata = m_cmd_sc_wdata_fifo.read(); |
---|
3896 | |
---|
3897 | r_sc_cpt = r_sc_cpt.read()+1; |
---|
3898 | } |
---|
3899 | break; |
---|
3900 | } |
---|
3901 | ///////////////// |
---|
3902 | case SC_DIR_LOCK: // Read the directory |
---|
3903 | { |
---|
3904 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_SC ) |
---|
3905 | { |
---|
3906 | size_t way = 0; |
---|
3907 | DirectoryEntry entry(m_cache_directory.read(m_cmd_sc_addr_fifo.read(), way)); |
---|
3908 | |
---|
3909 | r_sc_is_cnt = entry.is_cnt; |
---|
3910 | r_sc_dirty = entry.dirty; |
---|
3911 | r_sc_tag = entry.tag; |
---|
3912 | r_sc_way = way; |
---|
3913 | r_sc_copy = entry.owner.srcid; |
---|
3914 | #if L1_MULTI_CACHE |
---|
3915 | r_sc_copy_cache = entry.owner.cache_id; |
---|
3916 | #endif |
---|
3917 | r_sc_copy_inst = entry.owner.inst; |
---|
3918 | r_sc_ptr = entry.ptr; |
---|
3919 | r_sc_count = entry.count; |
---|
3920 | |
---|
3921 | if ( entry.valid ) r_sc_fsm = SC_DIR_HIT_READ; |
---|
3922 | else r_sc_fsm = SC_MISS_TRT_LOCK; |
---|
3923 | |
---|
3924 | #if DEBUG_MEMC_SC |
---|
3925 | if( m_debug_sc_fsm ) |
---|
3926 | { |
---|
3927 | std::cout << " <MEMC.SC_DIR_LOCK> Directory acces" |
---|
3928 | << " / address = " << std::hex << m_cmd_sc_addr_fifo.read() |
---|
3929 | << " / hit = " << std::dec << entry.valid |
---|
3930 | << " / count = " << entry.count |
---|
3931 | << " / is_cnt = " << entry.is_cnt << std::endl; |
---|
3932 | } |
---|
3933 | #endif |
---|
3934 | } |
---|
3935 | break; |
---|
3936 | } |
---|
3937 | ///////////////////// |
---|
3938 | case SC_DIR_HIT_READ: // update directory for lock and dirty bit |
---|
3939 | // and check data change in cache |
---|
3940 | { |
---|
3941 | size_t way = r_sc_way.read(); |
---|
3942 | size_t set = m_y[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
3943 | size_t word = m_x[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
3944 | |
---|
3945 | // update directory (lock & dirty bits) |
---|
3946 | DirectoryEntry entry; |
---|
3947 | entry.valid = true; |
---|
3948 | entry.is_cnt = r_sc_is_cnt.read(); |
---|
3949 | entry.dirty = true; |
---|
3950 | entry.lock = true; |
---|
3951 | entry.tag = r_sc_tag.read(); |
---|
3952 | entry.owner.srcid = r_sc_copy.read(); |
---|
3953 | #if L1_MULTI_CACHE |
---|
3954 | entry.owner.cache_id = r_sc_copy_cache.read(); |
---|
3955 | #endif |
---|
3956 | entry.owner.inst = r_sc_copy_inst.read(); |
---|
3957 | entry.count = r_sc_count.read(); |
---|
3958 | entry.ptr = r_sc_ptr.read(); |
---|
3959 | |
---|
3960 | m_cache_directory.write(set, way, entry); |
---|
3961 | |
---|
3962 | // read data in cache & check data change |
---|
3963 | bool ok = ( r_sc_rdata[0].read() == m_cache_data[way][set][word] ); |
---|
3964 | if ( r_sc_cpt.read()==4 ) // 64 bits SC |
---|
3965 | ok &= ( r_sc_rdata[1] == m_cache_data[way][set][word+1] ); |
---|
3966 | |
---|
3967 | // to avoid livelock, force the atomic access to fail pseudo-randomly |
---|
3968 | bool forced_fail = ( (r_sc_lfsr % (64) == 0) && RANDOMIZE_SC ); |
---|
3969 | r_sc_lfsr = (r_sc_lfsr >> 1) ^ ((-(r_sc_lfsr & 1)) & 0xd0000001); |
---|
3970 | |
---|
3971 | if( ok and not forced_fail ) // no data change |
---|
3972 | { |
---|
3973 | r_sc_fsm = SC_DIR_HIT_WRITE; |
---|
3974 | } |
---|
3975 | else // return failure |
---|
3976 | { |
---|
3977 | r_sc_fsm = SC_RSP_FAIL; |
---|
3978 | } |
---|
3979 | |
---|
3980 | #if DEBUG_MEMC_SC |
---|
3981 | if( m_debug_sc_fsm ) |
---|
3982 | { |
---|
3983 | std::cout << " <MEMC.SC_DIR_HIT_READ> Test if SC success:" |
---|
3984 | << " / expected value = " << r_sc_rdata[0].read() |
---|
3985 | << " / actual value = " << m_cache_data[way][set][word] |
---|
3986 | << " / forced_fail = " << forced_fail << std::endl; |
---|
3987 | } |
---|
3988 | #endif |
---|
3989 | break; |
---|
3990 | } |
---|
3991 | ////////////////////// |
---|
3992 | case SC_DIR_HIT_WRITE: // test if a CC transaction is required |
---|
3993 | // write data in cache if no CC request |
---|
3994 | { |
---|
3995 | // test coherence request |
---|
3996 | if(r_sc_count.read()) // replicated line |
---|
3997 | { |
---|
3998 | if ( r_sc_is_cnt.read() ) |
---|
3999 | { |
---|
4000 | r_sc_fsm = SC_BC_TRT_LOCK; // broadcast invalidate required |
---|
4001 | } |
---|
4002 | else if( !r_sc_to_init_cmd_multi_req.read() && |
---|
4003 | !r_sc_to_init_cmd_brdcast_req.read() ) |
---|
4004 | { |
---|
4005 | r_sc_fsm = SC_UPT_LOCK; // multi update required |
---|
4006 | } |
---|
4007 | else |
---|
4008 | { |
---|
4009 | r_sc_fsm = SC_WAIT; |
---|
4010 | } |
---|
4011 | } |
---|
4012 | else // no copies |
---|
4013 | { |
---|
4014 | size_t way = r_sc_way.read(); |
---|
4015 | size_t set = m_y[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4016 | size_t word = m_x[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4017 | |
---|
4018 | // cache update |
---|
4019 | m_cache_data[way][set][word] = r_sc_wdata.read(); |
---|
4020 | if(r_sc_cpt.read()==4) |
---|
4021 | m_cache_data[way][set][word+1] = m_cmd_sc_wdata_fifo.read(); |
---|
4022 | |
---|
4023 | // monitor |
---|
4024 | if ( m_monitor_ok ) |
---|
4025 | { |
---|
4026 | vci_addr_t address = m_cmd_sc_addr_fifo.read(); |
---|
4027 | char buf[80]; |
---|
4028 | snprintf(buf, 80, "SC_DIR_HIT_WRITE srcid %d", m_cmd_sc_srcid_fifo.read()); |
---|
4029 | check_monitor( buf, address, r_sc_wdata.read() ); |
---|
4030 | if ( r_sc_cpt.read()==4 ) |
---|
4031 | check_monitor( buf, address+4, m_cmd_sc_wdata_fifo.read() ); |
---|
4032 | } |
---|
4033 | r_sc_fsm = SC_RSP_SUCCESS; |
---|
4034 | |
---|
4035 | #if DEBUG_MEMC_SC |
---|
4036 | if( m_debug_sc_fsm ) |
---|
4037 | { |
---|
4038 | std::cout << " <MEMC.SC_DIR_HIT_WRITE> Update cache:" |
---|
4039 | << " way = " << std::dec << way |
---|
4040 | << " / set = " << set |
---|
4041 | << " / word = " << word |
---|
4042 | << " / value = " << r_sc_wdata.read() |
---|
4043 | << " / count = " << r_sc_count.read() << std::endl; |
---|
4044 | } |
---|
4045 | #endif |
---|
4046 | } |
---|
4047 | break; |
---|
4048 | } |
---|
4049 | ///////////////// |
---|
4050 | case SC_UPT_LOCK: // try to register the transaction in UPT |
---|
4051 | // and write data in cache if successful registration |
---|
4052 | // releases locks to retry later if UPT full |
---|
4053 | { |
---|
4054 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_SC ) |
---|
4055 | { |
---|
4056 | bool wok = false; |
---|
4057 | size_t index = 0; |
---|
4058 | size_t srcid = m_cmd_sc_srcid_fifo.read(); |
---|
4059 | size_t trdid = m_cmd_sc_trdid_fifo.read(); |
---|
4060 | size_t pktid = m_cmd_sc_pktid_fifo.read(); |
---|
4061 | addr_t nline = m_nline[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4062 | size_t nb_copies = r_sc_count.read(); |
---|
4063 | |
---|
4064 | wok = m_update_tab.set(true, // it's an update transaction |
---|
4065 | false, // it's not a broadcast |
---|
4066 | true, // it needs a response |
---|
4067 | srcid, |
---|
4068 | trdid, |
---|
4069 | pktid, |
---|
4070 | nline, |
---|
4071 | nb_copies, |
---|
4072 | index); |
---|
4073 | if (wok) // coherence transaction registered in UPT |
---|
4074 | { |
---|
4075 | // cache update |
---|
4076 | size_t way = r_sc_way.read(); |
---|
4077 | size_t set = m_y[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4078 | size_t word = m_x[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4079 | |
---|
4080 | m_cache_data[way][set][word] = r_sc_wdata.read(); |
---|
4081 | if(r_sc_cpt.read()==4) |
---|
4082 | m_cache_data[way][set][word+1] = m_cmd_sc_wdata_fifo.read(); |
---|
4083 | |
---|
4084 | // monitor |
---|
4085 | if ( m_monitor_ok ) |
---|
4086 | { |
---|
4087 | vci_addr_t address = m_cmd_sc_addr_fifo.read(); |
---|
4088 | char buf[80]; |
---|
4089 | snprintf(buf, 80, "SC_DIR_HIT_WRITE srcid %d", m_cmd_sc_srcid_fifo.read()); |
---|
4090 | check_monitor( buf, address, r_sc_wdata.read() ); |
---|
4091 | if ( r_sc_cpt.read()==4 ) |
---|
4092 | check_monitor( buf, address+4, m_cmd_sc_wdata_fifo.read() ); |
---|
4093 | } |
---|
4094 | |
---|
4095 | r_sc_upt_index = index; |
---|
4096 | r_sc_fsm = SC_UPT_HEAP_LOCK; |
---|
4097 | } |
---|
4098 | else // releases the locks protecting UPT and DIR UPT full |
---|
4099 | { |
---|
4100 | r_sc_fsm = SC_WAIT; |
---|
4101 | } |
---|
4102 | |
---|
4103 | #if DEBUG_MEMC_SC |
---|
4104 | if( m_debug_sc_fsm ) |
---|
4105 | { |
---|
4106 | std::cout << " <MEMC.SC_UPT_LOCK> Register multi-update transaction in UPT" |
---|
4107 | << " / wok = " << wok |
---|
4108 | << " / nline = " << std::hex << nline |
---|
4109 | << " / count = " << nb_copies << std::endl; |
---|
4110 | } |
---|
4111 | #endif |
---|
4112 | } |
---|
4113 | break; |
---|
4114 | } |
---|
4115 | ///////////// |
---|
4116 | case SC_WAIT: // release all locks and retry from beginning |
---|
4117 | { |
---|
4118 | |
---|
4119 | #if DEBUG_MEMC_SC |
---|
4120 | if( m_debug_sc_fsm ) |
---|
4121 | { |
---|
4122 | std::cout << " <MEMC.SC_WAIT> Release all locks" << std::endl; |
---|
4123 | } |
---|
4124 | #endif |
---|
4125 | r_sc_fsm = SC_DIR_LOCK; |
---|
4126 | break; |
---|
4127 | } |
---|
4128 | ////////////////// |
---|
4129 | case SC_UPT_HEAP_LOCK: // lock the heap |
---|
4130 | { |
---|
4131 | if( r_alloc_heap_fsm.read() == ALLOC_HEAP_SC ) |
---|
4132 | { |
---|
4133 | |
---|
4134 | #if DEBUG_MEMC_SC |
---|
4135 | if( m_debug_sc_fsm ) |
---|
4136 | { |
---|
4137 | std::cout << " <MEMC.SC_UPT_HEAP_LOCK> Get access to the heap" << std::endl; |
---|
4138 | } |
---|
4139 | #endif |
---|
4140 | r_sc_fsm = SC_UPT_REQ; |
---|
4141 | } |
---|
4142 | break; |
---|
4143 | } |
---|
4144 | //////////////// |
---|
4145 | case SC_UPT_REQ: // send a first update request to INIT_CMD FSM |
---|
4146 | { |
---|
4147 | assert((r_alloc_heap_fsm.read() == ALLOC_HEAP_SC) and |
---|
4148 | "VCI_MEM_CACHE ERROR : bad HEAP allocation"); |
---|
4149 | |
---|
4150 | if( !r_sc_to_init_cmd_multi_req.read() && !r_sc_to_init_cmd_brdcast_req.read() ) |
---|
4151 | { |
---|
4152 | r_sc_to_init_cmd_brdcast_req = false; |
---|
4153 | r_sc_to_init_cmd_trdid = r_sc_upt_index.read(); |
---|
4154 | r_sc_to_init_cmd_nline = m_nline[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4155 | r_sc_to_init_cmd_index = m_x[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4156 | r_sc_to_init_cmd_wdata = r_sc_wdata.read(); |
---|
4157 | |
---|
4158 | if(r_sc_cpt.read() == 4) |
---|
4159 | { |
---|
4160 | r_sc_to_init_cmd_is_long = true; |
---|
4161 | r_sc_to_init_cmd_wdata_high = m_cmd_sc_wdata_fifo.read(); |
---|
4162 | } |
---|
4163 | else |
---|
4164 | { |
---|
4165 | r_sc_to_init_cmd_is_long = false; |
---|
4166 | r_sc_to_init_cmd_wdata_high = 0; |
---|
4167 | } |
---|
4168 | |
---|
4169 | // We put the first copy in the fifo |
---|
4170 | sc_to_init_cmd_fifo_put = true; |
---|
4171 | sc_to_init_cmd_fifo_inst = r_sc_copy_inst.read(); |
---|
4172 | sc_to_init_cmd_fifo_srcid = r_sc_copy.read(); |
---|
4173 | #if L1_MULTI_CACHE |
---|
4174 | sc_to_init_cmd_fifo_cache_id= r_sc_copy_cache.read(); |
---|
4175 | #endif |
---|
4176 | if(r_sc_count.read() == 1) // one single copy |
---|
4177 | { |
---|
4178 | r_sc_fsm = SC_IDLE; // Response will be sent after receiving |
---|
4179 | // update responses |
---|
4180 | cmd_sc_fifo_get = true; |
---|
4181 | r_sc_to_init_cmd_multi_req = true; |
---|
4182 | r_sc_cpt = 0; |
---|
4183 | } |
---|
4184 | else // several copies |
---|
4185 | { |
---|
4186 | r_sc_fsm = SC_UPT_NEXT; |
---|
4187 | } |
---|
4188 | |
---|
4189 | #if DEBUG_MEMC_SC |
---|
4190 | if( m_debug_sc_fsm ) |
---|
4191 | { |
---|
4192 | std::cout << " <MEMC.SC_UPT_REQ> Send the first update request to INIT_CMD FSM " |
---|
4193 | << " / address = " << std::hex << m_cmd_sc_addr_fifo.read() |
---|
4194 | << " / wdata = " << std::hex << r_sc_wdata.read() |
---|
4195 | << " / srcid = " << std::dec << r_sc_copy.read() |
---|
4196 | << " / inst = " << std::dec << r_sc_copy_inst.read() << std::endl; |
---|
4197 | } |
---|
4198 | #endif |
---|
4199 | } |
---|
4200 | break; |
---|
4201 | } |
---|
4202 | ///////////////// |
---|
4203 | case SC_UPT_NEXT: // send a multi-update request to INIT_CMD FSM |
---|
4204 | { |
---|
4205 | assert((r_alloc_heap_fsm.read() == ALLOC_HEAP_SC) |
---|
4206 | and "VCI_MEM_CACHE ERROR : bad HEAP allocation"); |
---|
4207 | |
---|
4208 | HeapEntry entry = m_heap.read(r_sc_ptr.read()); |
---|
4209 | sc_to_init_cmd_fifo_srcid = entry.owner.srcid; |
---|
4210 | #if L1_MULTI_CACHE |
---|
4211 | sc_to_init_cmd_fifo_cache_id = entry.owner.cache_id; |
---|
4212 | #endif |
---|
4213 | sc_to_init_cmd_fifo_inst = entry.owner.inst; |
---|
4214 | sc_to_init_cmd_fifo_put = true; |
---|
4215 | |
---|
4216 | if( m_sc_to_init_cmd_inst_fifo.wok() ) // request accepted by INIT_CMD FSM |
---|
4217 | { |
---|
4218 | r_sc_ptr = entry.next; |
---|
4219 | if( entry.next == r_sc_ptr.read() ) // last copy |
---|
4220 | { |
---|
4221 | r_sc_to_init_cmd_multi_req = true; |
---|
4222 | r_sc_fsm = SC_IDLE; // Response will be sent after receiving |
---|
4223 | // all update responses |
---|
4224 | cmd_sc_fifo_get = true; |
---|
4225 | r_sc_cpt = 0; |
---|
4226 | } |
---|
4227 | } |
---|
4228 | |
---|
4229 | #if DEBUG_MEMC_SC |
---|
4230 | if( m_debug_sc_fsm ) |
---|
4231 | { |
---|
4232 | std::cout << " <MEMC.SC_UPT_NEXT> Send the next update request to INIT_CMD FSM " |
---|
4233 | << " / address = " << std::hex << m_cmd_sc_addr_fifo.read() |
---|
4234 | << " / wdata = " << std::hex << r_sc_wdata.read() |
---|
4235 | << " / srcid = " << std::dec << entry.owner.srcid |
---|
4236 | << " / inst = " << std::dec << entry.owner.inst << std::endl; |
---|
4237 | } |
---|
4238 | #endif |
---|
4239 | break; |
---|
4240 | } |
---|
4241 | ///////////////////// |
---|
4242 | case SC_BC_TRT_LOCK: // check the TRT to register a PUT transaction |
---|
4243 | { |
---|
4244 | if( r_alloc_trt_fsm.read() == ALLOC_TRT_SC ) |
---|
4245 | { |
---|
4246 | if( !r_sc_to_ixr_cmd_req ) // we can transfer the request to IXR_CMD FSM |
---|
4247 | { |
---|
4248 | // fill the data buffer |
---|
4249 | size_t way = r_sc_way.read(); |
---|
4250 | size_t set = m_y[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4251 | size_t word = m_x[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4252 | for(size_t i = 0; i<m_words; i++) |
---|
4253 | { |
---|
4254 | if (i == word) |
---|
4255 | { |
---|
4256 | r_sc_to_ixr_cmd_data[i] = r_sc_wdata.read(); |
---|
4257 | } |
---|
4258 | else if ( (i == word+1) && (r_sc_cpt.read()==4) ) // 64 bit SC |
---|
4259 | { |
---|
4260 | r_sc_to_ixr_cmd_data[i] = m_cmd_sc_wdata_fifo.read(); |
---|
4261 | } |
---|
4262 | else |
---|
4263 | { |
---|
4264 | r_sc_to_ixr_cmd_data[i] = m_cache_data[way][set][i]; |
---|
4265 | } |
---|
4266 | } |
---|
4267 | size_t wok_index = 0; |
---|
4268 | bool wok = !m_transaction_tab.full(wok_index); |
---|
4269 | if ( wok ) |
---|
4270 | { |
---|
4271 | r_sc_trt_index = wok_index; |
---|
4272 | r_sc_fsm = SC_BC_UPT_LOCK; |
---|
4273 | } |
---|
4274 | else |
---|
4275 | { |
---|
4276 | r_sc_fsm = SC_WAIT; |
---|
4277 | } |
---|
4278 | } |
---|
4279 | else |
---|
4280 | { |
---|
4281 | r_sc_fsm = SC_WAIT; |
---|
4282 | } |
---|
4283 | } |
---|
4284 | break; |
---|
4285 | } |
---|
4286 | /////////////////// |
---|
4287 | case SC_BC_UPT_LOCK: // register a broadcast inval transaction in UPT |
---|
4288 | // write data in cache in case of successful registration |
---|
4289 | { |
---|
4290 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_SC ) |
---|
4291 | { |
---|
4292 | bool wok = false; |
---|
4293 | size_t index = 0; |
---|
4294 | size_t srcid = m_cmd_sc_srcid_fifo.read(); |
---|
4295 | size_t trdid = m_cmd_sc_trdid_fifo.read(); |
---|
4296 | size_t pktid = m_cmd_sc_pktid_fifo.read(); |
---|
4297 | addr_t nline = m_nline[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4298 | size_t nb_copies = r_sc_count.read(); |
---|
4299 | |
---|
4300 | // register a broadcast inval transaction in UPT |
---|
4301 | wok = m_update_tab.set(false, // it's an inval transaction |
---|
4302 | true, // it's a broadcast |
---|
4303 | true, // it needs a response |
---|
4304 | srcid, |
---|
4305 | trdid, |
---|
4306 | pktid, |
---|
4307 | nline, |
---|
4308 | nb_copies, |
---|
4309 | index); |
---|
4310 | |
---|
4311 | if ( wok ) // UPT not full |
---|
4312 | { |
---|
4313 | // cache update |
---|
4314 | size_t way = r_sc_way.read(); |
---|
4315 | size_t set = m_y[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4316 | size_t word = m_x[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4317 | |
---|
4318 | m_cache_data[way][set][word] = r_sc_wdata.read(); |
---|
4319 | if(r_sc_cpt.read()==4) |
---|
4320 | m_cache_data[way][set][word+1] = m_cmd_sc_wdata_fifo.read(); |
---|
4321 | |
---|
4322 | // monitor |
---|
4323 | if ( m_monitor_ok ) |
---|
4324 | { |
---|
4325 | vci_addr_t address = m_cmd_sc_addr_fifo.read(); |
---|
4326 | char buf[80]; |
---|
4327 | snprintf(buf, 80, "SC_DIR_HIT_WRITE srcid %d", m_cmd_sc_srcid_fifo.read()); |
---|
4328 | check_monitor( buf, address, r_sc_wdata.read() ); |
---|
4329 | if ( r_sc_cpt.read()==4 ) |
---|
4330 | check_monitor( buf, address+4, m_cmd_sc_wdata_fifo.read() ); |
---|
4331 | } |
---|
4332 | r_sc_upt_index = index; |
---|
4333 | r_sc_fsm = SC_BC_DIR_INVAL; |
---|
4334 | #if DEBUG_MEMC_SC |
---|
4335 | if( m_debug_sc_fsm ) |
---|
4336 | { |
---|
4337 | std::cout << " <MEMC.SC_BC_UPT_LOCK> Register a broadcast inval transaction in UPT" |
---|
4338 | << " / nline = " << nline |
---|
4339 | << " / count = " << nb_copies |
---|
4340 | << " / upt_index = " << index << std::endl; |
---|
4341 | } |
---|
4342 | #endif |
---|
4343 | } |
---|
4344 | else // releases the lock protecting UPT |
---|
4345 | { |
---|
4346 | r_sc_fsm = SC_WAIT; |
---|
4347 | } |
---|
4348 | } |
---|
4349 | break; |
---|
4350 | } |
---|
4351 | ////////////////// |
---|
4352 | case SC_BC_DIR_INVAL: // Register the PUT transaction in TRT, and inval the DIR entry |
---|
4353 | { |
---|
4354 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_SC ) && |
---|
4355 | (r_alloc_upt_fsm.read() == ALLOC_UPT_SC ) && |
---|
4356 | (r_alloc_dir_fsm.read() == ALLOC_DIR_SC )) |
---|
4357 | { |
---|
4358 | // set TRT |
---|
4359 | m_transaction_tab.set(r_sc_trt_index.read(), |
---|
4360 | false, // PUT request to XRAM |
---|
4361 | m_nline[(vci_addr_t)(m_cmd_sc_addr_fifo.read())], |
---|
4362 | 0, |
---|
4363 | 0, |
---|
4364 | 0, |
---|
4365 | false, // not a processor read |
---|
4366 | 0, |
---|
4367 | 0, |
---|
4368 | std::vector<be_t>(m_words,0), |
---|
4369 | std::vector<data_t>(m_words,0)); |
---|
4370 | |
---|
4371 | // invalidate directory entry |
---|
4372 | DirectoryEntry entry; |
---|
4373 | entry.valid = false; |
---|
4374 | entry.dirty = false; |
---|
4375 | entry.tag = 0; |
---|
4376 | entry.is_cnt = false; |
---|
4377 | entry.lock = false; |
---|
4378 | entry.count = 0; |
---|
4379 | entry.owner.srcid = 0; |
---|
4380 | #if L1_MULTI_CACHE |
---|
4381 | entry.owner.cache_id= 0; |
---|
4382 | #endif |
---|
4383 | entry.owner.inst = false; |
---|
4384 | entry.ptr = 0; |
---|
4385 | size_t set = m_y[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4386 | size_t way = r_sc_way.read(); |
---|
4387 | m_cache_directory.write(set, way, entry); |
---|
4388 | |
---|
4389 | r_sc_fsm = SC_BC_CC_SEND; |
---|
4390 | |
---|
4391 | #if DEBUG_MEMC_SC |
---|
4392 | if( m_debug_sc_fsm ) |
---|
4393 | { |
---|
4394 | std::cout << " <MEMC.SC_BC_DIR_INVAL> Register the PUT in TRT and invalidate DIR entry" |
---|
4395 | << " / nline = " << std::hex << m_nline[(vci_addr_t)(m_cmd_sc_addr_fifo.read())] |
---|
4396 | << " / set = " << std::dec << set << " / way = " << way << std::endl; |
---|
4397 | } |
---|
4398 | #endif |
---|
4399 | } |
---|
4400 | else |
---|
4401 | { |
---|
4402 | assert(false and "LOCK ERROR in SC_FSM, STATE = SC_BC_DIR_INVAL"); |
---|
4403 | } |
---|
4404 | break; |
---|
4405 | } |
---|
4406 | /////////////////// |
---|
4407 | case SC_BC_CC_SEND: // Request the broadcast inval to INIT_CMD FSM |
---|
4408 | { |
---|
4409 | if ( !r_sc_to_init_cmd_multi_req.read() && |
---|
4410 | !r_sc_to_init_cmd_brdcast_req.read()) |
---|
4411 | { |
---|
4412 | r_sc_to_init_cmd_multi_req = false; |
---|
4413 | r_sc_to_init_cmd_brdcast_req = true; |
---|
4414 | r_sc_to_init_cmd_trdid = r_sc_upt_index.read(); |
---|
4415 | r_sc_to_init_cmd_nline = m_nline[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4416 | r_sc_to_init_cmd_index = 0; |
---|
4417 | r_sc_to_init_cmd_wdata = 0; |
---|
4418 | |
---|
4419 | r_sc_fsm = SC_BC_XRAM_REQ; |
---|
4420 | } |
---|
4421 | break; |
---|
4422 | } |
---|
4423 | //////////////////// |
---|
4424 | case SC_BC_XRAM_REQ: // request the IXR FSM to start a put transaction |
---|
4425 | { |
---|
4426 | if ( !r_sc_to_ixr_cmd_req ) |
---|
4427 | { |
---|
4428 | r_sc_to_ixr_cmd_req = true; |
---|
4429 | r_sc_to_ixr_cmd_write = true; |
---|
4430 | r_sc_to_ixr_cmd_nline = m_nline[(vci_addr_t)(m_cmd_sc_addr_fifo.read())]; |
---|
4431 | r_sc_to_ixr_cmd_trdid = r_sc_trt_index.read(); |
---|
4432 | r_sc_fsm = SC_IDLE; |
---|
4433 | cmd_sc_fifo_get = true; |
---|
4434 | r_sc_cpt = 0; |
---|
4435 | |
---|
4436 | #if DEBUG_MEMC_SC |
---|
4437 | if( m_debug_sc_fsm ) |
---|
4438 | { |
---|
4439 | std::cout << " <MEMC.SC_BC_XRAM_REQ> Request a PUT transaction to IXR_CMD FSM" << std::hex |
---|
4440 | << " / nline = " << m_nline[(vci_addr_t)m_cmd_sc_addr_fifo.read()] |
---|
4441 | << " / trt_index = " << r_sc_trt_index.read() << std::endl; |
---|
4442 | } |
---|
4443 | #endif |
---|
4444 | } |
---|
4445 | else |
---|
4446 | { |
---|
4447 | std::cout << "MEM_CACHE, SC_BC_XRAM_REQ state : request should not have been previously set" |
---|
4448 | << std::endl; |
---|
4449 | } |
---|
4450 | break; |
---|
4451 | } |
---|
4452 | ///////////////// |
---|
4453 | case SC_RSP_FAIL: // request TGT_RSP FSM to send a failure response |
---|
4454 | { |
---|
4455 | if( !r_sc_to_tgt_rsp_req ) |
---|
4456 | { |
---|
4457 | cmd_sc_fifo_get = true; |
---|
4458 | r_sc_cpt = 0; |
---|
4459 | r_sc_to_tgt_rsp_req = true; |
---|
4460 | r_sc_to_tgt_rsp_data = 1; |
---|
4461 | r_sc_to_tgt_rsp_srcid = m_cmd_sc_srcid_fifo.read(); |
---|
4462 | r_sc_to_tgt_rsp_trdid = m_cmd_sc_trdid_fifo.read(); |
---|
4463 | r_sc_to_tgt_rsp_pktid = m_cmd_sc_pktid_fifo.read(); |
---|
4464 | r_sc_fsm = SC_IDLE; |
---|
4465 | |
---|
4466 | #if DEBUG_MEMC_SC |
---|
4467 | if( m_debug_sc_fsm ) |
---|
4468 | { |
---|
4469 | std::cout << " <MEMC.SC_RSP_FAIL> Request TGT_RSP to send a failure response" << std::endl; |
---|
4470 | } |
---|
4471 | #endif |
---|
4472 | } |
---|
4473 | break; |
---|
4474 | } |
---|
4475 | //////////////////// |
---|
4476 | case SC_RSP_SUCCESS: // request TGT_RSP FSM to send a success response |
---|
4477 | { |
---|
4478 | if( !r_sc_to_tgt_rsp_req ) |
---|
4479 | { |
---|
4480 | cmd_sc_fifo_get = true; |
---|
4481 | r_sc_cpt = 0; |
---|
4482 | r_sc_to_tgt_rsp_req = true; |
---|
4483 | r_sc_to_tgt_rsp_data = 0; |
---|
4484 | r_sc_to_tgt_rsp_srcid = m_cmd_sc_srcid_fifo.read(); |
---|
4485 | r_sc_to_tgt_rsp_trdid = m_cmd_sc_trdid_fifo.read(); |
---|
4486 | r_sc_to_tgt_rsp_pktid = m_cmd_sc_pktid_fifo.read(); |
---|
4487 | r_sc_fsm = SC_IDLE; |
---|
4488 | |
---|
4489 | #if DEBUG_MEMC_SC |
---|
4490 | if( m_debug_sc_fsm ) |
---|
4491 | { |
---|
4492 | std::cout << " <MEMC.SC_RSP_SUCCESS> Request TGT_RSP to send a success response" << std::endl; |
---|
4493 | } |
---|
4494 | #endif |
---|
4495 | } |
---|
4496 | break; |
---|
4497 | } |
---|
4498 | ///////////////////// |
---|
4499 | case SC_MISS_TRT_LOCK: // cache miss : request access to transaction Table |
---|
4500 | { |
---|
4501 | if( r_alloc_trt_fsm.read() == ALLOC_TRT_SC ) |
---|
4502 | { |
---|
4503 | size_t index = 0; |
---|
4504 | bool hit_read = m_transaction_tab.hit_read( |
---|
4505 | m_nline[(vci_addr_t)m_cmd_sc_addr_fifo.read()],index); |
---|
4506 | bool hit_write = m_transaction_tab.hit_write( |
---|
4507 | m_nline[(vci_addr_t)m_cmd_sc_addr_fifo.read()]); |
---|
4508 | bool wok = !m_transaction_tab.full(index); |
---|
4509 | |
---|
4510 | #if DEBUG_MEMC_SC |
---|
4511 | if( m_debug_sc_fsm ) |
---|
4512 | { |
---|
4513 | std::cout << " <MEMC.SC_MISS_TRT_LOCK> Check TRT state" |
---|
4514 | << " / hit_read = " << hit_read |
---|
4515 | << " / hit_write = " << hit_write |
---|
4516 | << " / wok = " << wok |
---|
4517 | << " / index = " << index << std::endl; |
---|
4518 | } |
---|
4519 | #endif |
---|
4520 | |
---|
4521 | if ( hit_read || !wok || hit_write ) // missing line already requested or no space in TRT |
---|
4522 | { |
---|
4523 | r_sc_fsm = SC_WAIT; |
---|
4524 | } |
---|
4525 | else |
---|
4526 | { |
---|
4527 | r_sc_trt_index = index; |
---|
4528 | r_sc_fsm = SC_MISS_TRT_SET; |
---|
4529 | } |
---|
4530 | } |
---|
4531 | break; |
---|
4532 | } |
---|
4533 | //////////////////// |
---|
4534 | case SC_MISS_TRT_SET: // register the GET transaction in TRT |
---|
4535 | { |
---|
4536 | if( r_alloc_trt_fsm.read() == ALLOC_TRT_SC ) |
---|
4537 | { |
---|
4538 | std::vector<be_t> be_vector; |
---|
4539 | std::vector<data_t> data_vector; |
---|
4540 | be_vector.clear(); |
---|
4541 | data_vector.clear(); |
---|
4542 | for ( size_t i=0; i<m_words; i++ ) |
---|
4543 | { |
---|
4544 | be_vector.push_back(0); |
---|
4545 | data_vector.push_back(0); |
---|
4546 | } |
---|
4547 | |
---|
4548 | m_transaction_tab.set(r_sc_trt_index.read(), |
---|
4549 | true, // read request |
---|
4550 | m_nline[(vci_addr_t)m_cmd_sc_addr_fifo.read()], |
---|
4551 | m_cmd_sc_srcid_fifo.read(), |
---|
4552 | m_cmd_sc_trdid_fifo.read(), |
---|
4553 | m_cmd_sc_pktid_fifo.read(), |
---|
4554 | false, // write request from processor |
---|
4555 | 0, |
---|
4556 | 0, |
---|
4557 | be_vector, |
---|
4558 | data_vector); |
---|
4559 | r_sc_fsm = SC_MISS_XRAM_REQ; |
---|
4560 | |
---|
4561 | #if DEBUG_MEMC_SC |
---|
4562 | if( m_debug_sc_fsm ) |
---|
4563 | { |
---|
4564 | std::cout << " <MEMC.SC_MISS_TRT_SET> Register a GET transaction in TRT" << std::hex |
---|
4565 | << " / nline = " << m_nline[(vci_addr_t)m_cmd_sc_addr_fifo.read()] |
---|
4566 | << " / trt_index = " << r_sc_trt_index.read() << std::endl; |
---|
4567 | } |
---|
4568 | #endif |
---|
4569 | } |
---|
4570 | break; |
---|
4571 | } |
---|
4572 | ////////////////////// |
---|
4573 | case SC_MISS_XRAM_REQ: // request the IXR_CMD FSM to fetch the missing line |
---|
4574 | { |
---|
4575 | if ( !r_sc_to_ixr_cmd_req ) |
---|
4576 | { |
---|
4577 | r_sc_to_ixr_cmd_req = true; |
---|
4578 | r_sc_to_ixr_cmd_write = false; |
---|
4579 | r_sc_to_ixr_cmd_trdid = r_sc_trt_index.read(); |
---|
4580 | r_sc_to_ixr_cmd_nline = m_nline[(vci_addr_t)m_cmd_sc_addr_fifo.read()]; |
---|
4581 | r_sc_fsm = SC_WAIT; |
---|
4582 | |
---|
4583 | #if DEBUG_MEMC_SC |
---|
4584 | if( m_debug_sc_fsm ) |
---|
4585 | { |
---|
4586 | std::cout << " <MEMC.SC_MISS_XRAM_REQ> Request a GET transaction to IXR_CMD FSM" << std::hex |
---|
4587 | << " / nline = " << m_nline[(vci_addr_t)m_cmd_sc_addr_fifo.read()] |
---|
4588 | << " / trt_index = " << r_sc_trt_index.read() << std::endl; |
---|
4589 | } |
---|
4590 | #endif |
---|
4591 | } |
---|
4592 | break; |
---|
4593 | } |
---|
4594 | } // end switch r_sc_fsm |
---|
4595 | |
---|
4596 | |
---|
4597 | ////////////////////////////////////////////////////////////////////////////// |
---|
4598 | // INIT_CMD FSM |
---|
4599 | ////////////////////////////////////////////////////////////////////////////// |
---|
4600 | // The INIT_CMD fsm controls the VCI CMD initiator port on the coherence |
---|
4601 | // network, used to update or invalidate cache lines in L1 caches. |
---|
4602 | // |
---|
4603 | // It implements a round-robin priority between the three possible client FSMs |
---|
4604 | // XRAM_RSP, WRITE and SC. Each FSM can request two types of services: |
---|
4605 | // - r_xram_rsp_to_init_cmd_multi_req : multi-inval |
---|
4606 | // r_xram_rsp_to_init_cmd_brdcast_req : broadcast-inval |
---|
4607 | // - r_write_to_init_cmd_multi_req : multi-update |
---|
4608 | // r_write_to_init_cmd_brdcast_req : broadcast-inval |
---|
4609 | // - r_sc_to_init_cmd_multi_req : multi-update |
---|
4610 | // r_sc_to_init_cmd_brdcast_req : broadcast-inval |
---|
4611 | // |
---|
4612 | // An inval request is a single cell VCI write command containing the |
---|
4613 | // index of the line to be invalidated. |
---|
4614 | // An update request is a multi-cells VCI write command : The first cell |
---|
4615 | // contains the index of the cache line to be updated. The second cell contains |
---|
4616 | // the index of the first modified word in the line. The following cells |
---|
4617 | // contain the data. |
---|
4618 | /////////////////////////////////////////////////////////////////////////////// |
---|
4619 | |
---|
4620 | switch ( r_init_cmd_fsm.read() ) |
---|
4621 | { |
---|
4622 | //////////////////////// |
---|
4623 | case INIT_CMD_UPDT_IDLE: // XRAM_RSP FSM has highest priority |
---|
4624 | { |
---|
4625 | if ( m_xram_rsp_to_init_cmd_inst_fifo.rok() || |
---|
4626 | r_xram_rsp_to_init_cmd_multi_req.read() ) |
---|
4627 | { |
---|
4628 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
4629 | m_cpt_inval++; |
---|
4630 | } |
---|
4631 | else if ( r_xram_rsp_to_init_cmd_brdcast_req.read() ) |
---|
4632 | { |
---|
4633 | r_init_cmd_fsm = INIT_CMD_XRAM_BRDCAST; |
---|
4634 | m_cpt_inval++; |
---|
4635 | } |
---|
4636 | else if ( m_write_to_init_cmd_inst_fifo.rok() || |
---|
4637 | r_write_to_init_cmd_multi_req.read() ) |
---|
4638 | { |
---|
4639 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
4640 | m_cpt_update++; |
---|
4641 | } |
---|
4642 | else if ( r_write_to_init_cmd_brdcast_req.read() ) |
---|
4643 | { |
---|
4644 | r_init_cmd_fsm = INIT_CMD_WRITE_BRDCAST; |
---|
4645 | m_cpt_inval++; |
---|
4646 | } |
---|
4647 | else if ( m_sc_to_init_cmd_inst_fifo.rok() || |
---|
4648 | r_sc_to_init_cmd_multi_req.read() ) |
---|
4649 | { |
---|
4650 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
4651 | m_cpt_update++; |
---|
4652 | } |
---|
4653 | else if( r_sc_to_init_cmd_brdcast_req.read() ) |
---|
4654 | { |
---|
4655 | r_init_cmd_fsm = INIT_CMD_SC_BRDCAST; |
---|
4656 | m_cpt_inval++; |
---|
4657 | } |
---|
4658 | break; |
---|
4659 | } |
---|
4660 | ///////////////////////// |
---|
4661 | case INIT_CMD_INVAL_IDLE: // WRITE FSM has highest priority |
---|
4662 | { |
---|
4663 | if ( m_write_to_init_cmd_inst_fifo.rok() || |
---|
4664 | r_write_to_init_cmd_multi_req.read() ) |
---|
4665 | { |
---|
4666 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
4667 | m_cpt_update++; |
---|
4668 | } |
---|
4669 | else if ( r_write_to_init_cmd_brdcast_req.read() ) |
---|
4670 | { |
---|
4671 | r_init_cmd_fsm = INIT_CMD_WRITE_BRDCAST; |
---|
4672 | m_cpt_inval++; |
---|
4673 | } |
---|
4674 | else if ( m_sc_to_init_cmd_inst_fifo.rok() || |
---|
4675 | r_sc_to_init_cmd_multi_req.read() ) |
---|
4676 | { |
---|
4677 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
4678 | m_cpt_update++; |
---|
4679 | } |
---|
4680 | else if( r_sc_to_init_cmd_brdcast_req.read() ) |
---|
4681 | { |
---|
4682 | r_init_cmd_fsm = INIT_CMD_SC_BRDCAST; |
---|
4683 | m_cpt_inval++; |
---|
4684 | } |
---|
4685 | else if ( m_xram_rsp_to_init_cmd_inst_fifo.rok() || |
---|
4686 | r_xram_rsp_to_init_cmd_multi_req.read() ) |
---|
4687 | { |
---|
4688 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
4689 | m_cpt_inval++; |
---|
4690 | } |
---|
4691 | else if ( r_xram_rsp_to_init_cmd_brdcast_req.read() ) |
---|
4692 | { |
---|
4693 | r_init_cmd_fsm = INIT_CMD_XRAM_BRDCAST; |
---|
4694 | m_cpt_inval++; |
---|
4695 | } |
---|
4696 | break; |
---|
4697 | } |
---|
4698 | ////////////////////////// |
---|
4699 | case INIT_CMD_SC_UPDT_IDLE: // SC FSM has highest priority |
---|
4700 | { |
---|
4701 | if ( m_sc_to_init_cmd_inst_fifo.rok() || |
---|
4702 | r_sc_to_init_cmd_multi_req.read() ) |
---|
4703 | { |
---|
4704 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
4705 | m_cpt_update++; |
---|
4706 | } |
---|
4707 | else if( r_sc_to_init_cmd_brdcast_req.read() ) |
---|
4708 | { |
---|
4709 | r_init_cmd_fsm = INIT_CMD_SC_BRDCAST; |
---|
4710 | m_cpt_inval++; |
---|
4711 | } |
---|
4712 | else if ( m_xram_rsp_to_init_cmd_inst_fifo.rok() || |
---|
4713 | r_xram_rsp_to_init_cmd_multi_req.read() ) |
---|
4714 | { |
---|
4715 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
4716 | m_cpt_inval++; |
---|
4717 | } |
---|
4718 | else if ( r_xram_rsp_to_init_cmd_brdcast_req.read() ) |
---|
4719 | { |
---|
4720 | r_init_cmd_fsm = INIT_CMD_XRAM_BRDCAST; |
---|
4721 | m_cpt_inval++; |
---|
4722 | } |
---|
4723 | else if ( m_write_to_init_cmd_inst_fifo.rok() || |
---|
4724 | r_write_to_init_cmd_multi_req.read() ) |
---|
4725 | { |
---|
4726 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
4727 | m_cpt_update++; |
---|
4728 | } |
---|
4729 | else if ( r_write_to_init_cmd_brdcast_req.read() ) |
---|
4730 | { |
---|
4731 | r_init_cmd_fsm = INIT_CMD_WRITE_BRDCAST; |
---|
4732 | m_cpt_inval++; |
---|
4733 | } |
---|
4734 | break; |
---|
4735 | } |
---|
4736 | ////////////////////////// |
---|
4737 | case INIT_CMD_INVAL_NLINE: // send a multi-inval (from XRAM_RSP) |
---|
4738 | { |
---|
4739 | if ( m_xram_rsp_to_init_cmd_inst_fifo.rok() ) |
---|
4740 | { |
---|
4741 | if ( p_vci_ini.cmdack ) |
---|
4742 | { |
---|
4743 | m_cpt_inval_mult++; |
---|
4744 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
4745 | xram_rsp_to_init_cmd_fifo_get = true; |
---|
4746 | } |
---|
4747 | } |
---|
4748 | else |
---|
4749 | { |
---|
4750 | if( r_xram_rsp_to_init_cmd_multi_req.read() ) r_xram_rsp_to_init_cmd_multi_req = false; |
---|
4751 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
4752 | } |
---|
4753 | break; |
---|
4754 | } |
---|
4755 | /////////////////////////// |
---|
4756 | case INIT_CMD_XRAM_BRDCAST: // send a broadcast-inval (from XRAM_RSP) |
---|
4757 | { |
---|
4758 | if ( p_vci_ini.cmdack ) |
---|
4759 | { |
---|
4760 | m_cpt_inval_brdcast++; |
---|
4761 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
4762 | r_xram_rsp_to_init_cmd_brdcast_req = false; |
---|
4763 | } |
---|
4764 | break; |
---|
4765 | } |
---|
4766 | //////////////////////////// |
---|
4767 | case INIT_CMD_WRITE_BRDCAST: // send a broadcast-inval (from WRITE FSM) |
---|
4768 | { |
---|
4769 | if( p_vci_ini.cmdack ) |
---|
4770 | { |
---|
4771 | |
---|
4772 | #if DEBUG_MEMC_INIT_CMD |
---|
4773 | if( m_debug_init_cmd_fsm ) |
---|
4774 | { |
---|
4775 | std::cout << " <MEMC.INIT_CMD_WRITE_BRDCAST> Broadcast-Inval for line " |
---|
4776 | << r_write_to_init_cmd_nline.read() << std::endl; |
---|
4777 | } |
---|
4778 | #endif |
---|
4779 | m_cpt_inval_brdcast++; |
---|
4780 | r_write_to_init_cmd_brdcast_req = false; |
---|
4781 | r_init_cmd_fsm = INIT_CMD_UPDT_IDLE; |
---|
4782 | } |
---|
4783 | break; |
---|
4784 | } |
---|
4785 | ///////////////////////// |
---|
4786 | case INIT_CMD_UPDT_NLINE: // send nline for a multi-update (from WRITE FSM) |
---|
4787 | { |
---|
4788 | if ( m_write_to_init_cmd_inst_fifo.rok() ) |
---|
4789 | { |
---|
4790 | if ( p_vci_ini.cmdack ) |
---|
4791 | { |
---|
4792 | m_cpt_update_mult++; |
---|
4793 | r_init_cmd_fsm = INIT_CMD_UPDT_INDEX; |
---|
4794 | // write_to_init_cmd_fifo_get = true; |
---|
4795 | } |
---|
4796 | } |
---|
4797 | else |
---|
4798 | { |
---|
4799 | if ( r_write_to_init_cmd_multi_req.read() ) r_write_to_init_cmd_multi_req = false; |
---|
4800 | r_init_cmd_fsm = INIT_CMD_UPDT_IDLE; |
---|
4801 | } |
---|
4802 | break; |
---|
4803 | } |
---|
4804 | ///////////////////////// |
---|
4805 | case INIT_CMD_UPDT_INDEX: // send word index for a multi-update (from WRITE FSM) |
---|
4806 | { |
---|
4807 | r_init_cmd_cpt = 0; |
---|
4808 | if ( p_vci_ini.cmdack ) r_init_cmd_fsm = INIT_CMD_UPDT_DATA; |
---|
4809 | break; |
---|
4810 | } |
---|
4811 | //////////////////////// |
---|
4812 | case INIT_CMD_UPDT_DATA: // send the data for a multi-update (from WRITE FSM) |
---|
4813 | { |
---|
4814 | if ( p_vci_ini.cmdack ) |
---|
4815 | { |
---|
4816 | if ( r_init_cmd_cpt.read() == (r_write_to_init_cmd_count.read()-1) ) |
---|
4817 | { |
---|
4818 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
4819 | write_to_init_cmd_fifo_get = true; |
---|
4820 | } |
---|
4821 | else |
---|
4822 | { |
---|
4823 | r_init_cmd_cpt = r_init_cmd_cpt.read() + 1; |
---|
4824 | } |
---|
4825 | } |
---|
4826 | break; |
---|
4827 | } |
---|
4828 | ///////////////////////// |
---|
4829 | case INIT_CMD_SC_BRDCAST: // send a broadcast-inval (from SC FSM) |
---|
4830 | { |
---|
4831 | if( p_vci_ini.cmdack ) |
---|
4832 | { |
---|
4833 | m_cpt_inval_brdcast++; |
---|
4834 | r_sc_to_init_cmd_brdcast_req = false; |
---|
4835 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_IDLE; |
---|
4836 | } |
---|
4837 | break; |
---|
4838 | } |
---|
4839 | //////////////////////////// |
---|
4840 | case INIT_CMD_SC_UPDT_NLINE: // send nline for a multi-update (from SC FSM) |
---|
4841 | { |
---|
4842 | if ( m_sc_to_init_cmd_inst_fifo.rok() ) |
---|
4843 | { |
---|
4844 | if ( p_vci_ini.cmdack ) |
---|
4845 | { |
---|
4846 | m_cpt_update_mult++; |
---|
4847 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_INDEX; |
---|
4848 | } |
---|
4849 | } |
---|
4850 | else |
---|
4851 | { |
---|
4852 | if( r_sc_to_init_cmd_multi_req.read() ) r_sc_to_init_cmd_multi_req = false; |
---|
4853 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_IDLE; |
---|
4854 | } |
---|
4855 | break; |
---|
4856 | } |
---|
4857 | //////////////////////////// |
---|
4858 | case INIT_CMD_SC_UPDT_INDEX: // send word index for a multi-update (from SC FSM) |
---|
4859 | { |
---|
4860 | if ( p_vci_ini.cmdack ) r_init_cmd_fsm = INIT_CMD_SC_UPDT_DATA; |
---|
4861 | break; |
---|
4862 | } |
---|
4863 | /////////////////////////// |
---|
4864 | case INIT_CMD_SC_UPDT_DATA: // send first data for a multi-update (from SC FSM) |
---|
4865 | { |
---|
4866 | if ( p_vci_ini.cmdack ) |
---|
4867 | { |
---|
4868 | if ( r_sc_to_init_cmd_is_long.read() ) |
---|
4869 | { |
---|
4870 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_DATA_HIGH; |
---|
4871 | } |
---|
4872 | else |
---|
4873 | { |
---|
4874 | sc_to_init_cmd_fifo_get = true; |
---|
4875 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
4876 | } |
---|
4877 | } |
---|
4878 | break; |
---|
4879 | } |
---|
4880 | //////////////////////// |
---|
4881 | case INIT_CMD_SC_UPDT_DATA_HIGH: // send second data for a multi-update (from SC FSM) |
---|
4882 | { |
---|
4883 | if ( p_vci_ini.cmdack ) |
---|
4884 | { |
---|
4885 | sc_to_init_cmd_fifo_get = true; |
---|
4886 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
4887 | } |
---|
4888 | break; |
---|
4889 | } |
---|
4890 | } // end switch r_init_cmd_fsm |
---|
4891 | |
---|
4892 | ///////////////////////////////////////////////////////////////////// |
---|
4893 | // TGT_RSP FSM |
---|
4894 | ///////////////////////////////////////////////////////////////////// |
---|
4895 | // The TGT_RSP fsm sends the responses on the VCI target port |
---|
4896 | // with a round robin priority between six requests : |
---|
4897 | // - r_read_to_tgt_rsp_req |
---|
4898 | // - r_write_to_tgt_rsp_req |
---|
4899 | // - r_sc_to_tgt_rsp_req |
---|
4900 | // - r_cleanup_to_tgt_rsp_req |
---|
4901 | // - r_xram_rsp_to_tgt_rsp_req |
---|
4902 | // - r_init_rsp_to_tgt_rsp_req |
---|
4903 | // The ordering is : read > write > sc > xram > init > cleanup |
---|
4904 | ///////////////////////////////////////////////////////////////////// |
---|
4905 | |
---|
4906 | switch ( r_tgt_rsp_fsm.read() ) |
---|
4907 | { |
---|
4908 | /////////////////////// |
---|
4909 | case TGT_RSP_READ_IDLE: // write requests have the highest priority |
---|
4910 | { |
---|
4911 | if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
4912 | else if ( r_sc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_SC; |
---|
4913 | else if ( r_xram_rsp_to_tgt_rsp_req ) |
---|
4914 | { |
---|
4915 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
4916 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
4917 | } |
---|
4918 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
4919 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
4920 | else if ( r_read_to_tgt_rsp_req ) |
---|
4921 | { |
---|
4922 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
4923 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
4924 | } |
---|
4925 | break; |
---|
4926 | } |
---|
4927 | //////////////////////// |
---|
4928 | case TGT_RSP_WRITE_IDLE: // sc requests have the highest priority |
---|
4929 | { |
---|
4930 | if ( r_sc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_SC; |
---|
4931 | else if ( r_xram_rsp_to_tgt_rsp_req ) |
---|
4932 | { |
---|
4933 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
4934 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
4935 | } |
---|
4936 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
4937 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
4938 | else if ( r_read_to_tgt_rsp_req ) |
---|
4939 | { |
---|
4940 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
4941 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
4942 | } |
---|
4943 | |
---|
4944 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
4945 | break; |
---|
4946 | } |
---|
4947 | /////////////////////// |
---|
4948 | case TGT_RSP_SC_IDLE: // xram_rsp requests have the highest priority |
---|
4949 | { |
---|
4950 | if ( r_xram_rsp_to_tgt_rsp_req ) |
---|
4951 | { |
---|
4952 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
4953 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
4954 | } |
---|
4955 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
4956 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
4957 | else if ( r_read_to_tgt_rsp_req ) |
---|
4958 | { |
---|
4959 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
4960 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
4961 | } |
---|
4962 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
4963 | else if ( r_sc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_SC; |
---|
4964 | break; |
---|
4965 | } |
---|
4966 | /////////////////////// |
---|
4967 | case TGT_RSP_XRAM_IDLE: // init requests have the highest priority |
---|
4968 | { |
---|
4969 | |
---|
4970 | if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
4971 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
4972 | else if ( r_read_to_tgt_rsp_req ) |
---|
4973 | { |
---|
4974 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
4975 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
4976 | } |
---|
4977 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
4978 | else if ( r_sc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_SC; |
---|
4979 | else if ( r_xram_rsp_to_tgt_rsp_req ) |
---|
4980 | { |
---|
4981 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
4982 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
4983 | } |
---|
4984 | break; |
---|
4985 | } |
---|
4986 | /////////////////////// |
---|
4987 | case TGT_RSP_INIT_IDLE: // cleanup requests have the highest priority |
---|
4988 | { |
---|
4989 | if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
4990 | else if ( r_read_to_tgt_rsp_req ) |
---|
4991 | { |
---|
4992 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
4993 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
4994 | } |
---|
4995 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
4996 | else if ( r_sc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_SC; |
---|
4997 | else if ( r_xram_rsp_to_tgt_rsp_req ) |
---|
4998 | { |
---|
4999 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
5000 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
5001 | } |
---|
5002 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
5003 | break; |
---|
5004 | } |
---|
5005 | /////////////////////// |
---|
5006 | case TGT_RSP_CLEANUP_IDLE: // read requests have the highest priority |
---|
5007 | { |
---|
5008 | if ( r_read_to_tgt_rsp_req ) |
---|
5009 | { |
---|
5010 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
5011 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
5012 | } |
---|
5013 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
5014 | else if ( r_sc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_SC; |
---|
5015 | else if ( r_xram_rsp_to_tgt_rsp_req ) |
---|
5016 | { |
---|
5017 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
5018 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
5019 | } |
---|
5020 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
5021 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
5022 | break; |
---|
5023 | } |
---|
5024 | ////////////////// |
---|
5025 | case TGT_RSP_READ: // send the response to a read |
---|
5026 | { |
---|
5027 | if ( p_vci_tgt.rspack ) |
---|
5028 | { |
---|
5029 | |
---|
5030 | #if DEBUG_MEMC_TGT_RSP |
---|
5031 | if( m_debug_tgt_rsp_fsm ) |
---|
5032 | { |
---|
5033 | std::cout << " <MEMC.TGT_RSP_READ> Read response" |
---|
5034 | << " / rsrcid = " << std::dec << r_read_to_tgt_rsp_srcid.read() |
---|
5035 | << " / rtrdid = " << r_read_to_tgt_rsp_trdid.read() |
---|
5036 | << " / rdata = " << std::hex << r_read_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read() |
---|
5037 | << " / cpt = " << std::dec << r_tgt_rsp_cpt.read() << std::endl; |
---|
5038 | } |
---|
5039 | #endif |
---|
5040 | if ( r_tgt_rsp_cpt.read() == (r_read_to_tgt_rsp_word.read()+r_read_to_tgt_rsp_length-1) ) |
---|
5041 | { |
---|
5042 | r_tgt_rsp_fsm = TGT_RSP_READ_IDLE; |
---|
5043 | r_read_to_tgt_rsp_req = false; |
---|
5044 | } |
---|
5045 | else |
---|
5046 | { |
---|
5047 | r_tgt_rsp_cpt = r_tgt_rsp_cpt.read() + 1; |
---|
5048 | } |
---|
5049 | } |
---|
5050 | break; |
---|
5051 | } |
---|
5052 | /////////////////// |
---|
5053 | case TGT_RSP_WRITE: // send the write acknowledge |
---|
5054 | { |
---|
5055 | if ( p_vci_tgt.rspack ) |
---|
5056 | { |
---|
5057 | |
---|
5058 | #if DEBUG_MEMC_TGT_RSP |
---|
5059 | if( m_debug_tgt_rsp_fsm ) |
---|
5060 | { |
---|
5061 | std::cout << " <MEMC.TGT_RSP_WRITE> Write response" |
---|
5062 | << " / rsrcid = " << std::dec << r_write_to_tgt_rsp_srcid.read() |
---|
5063 | << " / rtrdid = " << r_write_to_tgt_rsp_trdid.read() << std::endl; |
---|
5064 | } |
---|
5065 | #endif |
---|
5066 | r_tgt_rsp_fsm = TGT_RSP_WRITE_IDLE; |
---|
5067 | r_write_to_tgt_rsp_req = false; |
---|
5068 | } |
---|
5069 | break; |
---|
5070 | } |
---|
5071 | /////////////////// |
---|
5072 | case TGT_RSP_CLEANUP: // pas clair pour moi (AG) |
---|
5073 | { |
---|
5074 | if ( p_vci_tgt.rspack ) |
---|
5075 | { |
---|
5076 | |
---|
5077 | #if DEBUG_MEMC_TGT_RSP |
---|
5078 | if( m_debug_tgt_rsp_fsm ) |
---|
5079 | { |
---|
5080 | std::cout << " <MEMC.TGT_RSP_CLEANUP> Cleanup response" |
---|
5081 | << " / rsrcid = " << std::dec << r_cleanup_to_tgt_rsp_srcid.read() |
---|
5082 | << " / rtrdid = " << r_cleanup_to_tgt_rsp_trdid.read() << std::endl; |
---|
5083 | } |
---|
5084 | #endif |
---|
5085 | r_tgt_rsp_fsm = TGT_RSP_CLEANUP_IDLE; |
---|
5086 | r_cleanup_to_tgt_rsp_req = false; |
---|
5087 | } |
---|
5088 | break; |
---|
5089 | } |
---|
5090 | ////////////////// |
---|
5091 | case TGT_RSP_SC: // send one atomic word response |
---|
5092 | { |
---|
5093 | if ( p_vci_tgt.rspack ) |
---|
5094 | { |
---|
5095 | |
---|
5096 | #if DEBUG_MEMC_TGT_RSP |
---|
5097 | if( m_debug_tgt_rsp_fsm ) |
---|
5098 | { |
---|
5099 | std::cout << " <MEMC.TGT_RSP_SC> SC response" |
---|
5100 | << " / rsrcid = " << std::dec << r_sc_to_tgt_rsp_srcid.read() |
---|
5101 | << " / rtrdid = " << r_sc_to_tgt_rsp_trdid.read() << std::endl; |
---|
5102 | } |
---|
5103 | #endif |
---|
5104 | r_tgt_rsp_fsm = TGT_RSP_SC_IDLE; |
---|
5105 | r_sc_to_tgt_rsp_req = false; |
---|
5106 | } |
---|
5107 | break; |
---|
5108 | } |
---|
5109 | |
---|
5110 | /////////////////////// |
---|
5111 | case TGT_RSP_XRAM: // send the response after XRAM access |
---|
5112 | { |
---|
5113 | if ( p_vci_tgt.rspack ) |
---|
5114 | { |
---|
5115 | |
---|
5116 | #if DEBUG_MEMC_TGT_RSP |
---|
5117 | if( m_debug_tgt_rsp_fsm ) |
---|
5118 | { |
---|
5119 | std::cout << " <MEMC.TGT_RSP_XRAM> Response following XRAM access" |
---|
5120 | << " / rsrcid = " << std::dec << r_xram_rsp_to_tgt_rsp_srcid.read() |
---|
5121 | << " / rtrdid = " << r_xram_rsp_to_tgt_rsp_trdid.read() |
---|
5122 | << " / rdata = " << std::hex << r_xram_rsp_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read() |
---|
5123 | << " / cpt = " << std::dec << r_tgt_rsp_cpt.read() << std::endl; |
---|
5124 | } |
---|
5125 | #endif |
---|
5126 | if ( (r_tgt_rsp_cpt.read() == |
---|
5127 | (r_xram_rsp_to_tgt_rsp_word.read()+r_xram_rsp_to_tgt_rsp_length.read()-1)) |
---|
5128 | || r_xram_rsp_to_tgt_rsp_rerror.read() ) |
---|
5129 | { |
---|
5130 | r_tgt_rsp_fsm = TGT_RSP_XRAM_IDLE; |
---|
5131 | r_xram_rsp_to_tgt_rsp_req = false; |
---|
5132 | } |
---|
5133 | else |
---|
5134 | { |
---|
5135 | r_tgt_rsp_cpt = r_tgt_rsp_cpt.read() + 1; |
---|
5136 | } |
---|
5137 | } |
---|
5138 | break; |
---|
5139 | } |
---|
5140 | ////////////////// |
---|
5141 | case TGT_RSP_INIT: // send the write response after coherence transaction |
---|
5142 | { |
---|
5143 | if ( p_vci_tgt.rspack ) |
---|
5144 | { |
---|
5145 | |
---|
5146 | #if DEBUG_MEMC_TGT_RSP |
---|
5147 | if( m_debug_tgt_rsp_fsm ) |
---|
5148 | { |
---|
5149 | std::cout << " <MEMC.TGT_RSP_INIT> Write response after coherence transaction" |
---|
5150 | << " / rsrcid = " << std::dec << r_init_rsp_to_tgt_rsp_srcid.read() |
---|
5151 | << " / rtrdid = " << r_init_rsp_to_tgt_rsp_trdid.read() << std::endl; |
---|
5152 | } |
---|
5153 | #endif |
---|
5154 | r_tgt_rsp_fsm = TGT_RSP_INIT_IDLE; |
---|
5155 | r_init_rsp_to_tgt_rsp_req = false; |
---|
5156 | } |
---|
5157 | break; |
---|
5158 | } |
---|
5159 | } // end switch tgt_rsp_fsm |
---|
5160 | |
---|
5161 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5162 | // ALLOC_UPT FSM |
---|
5163 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5164 | // The ALLOC_UPT FSM allocates the access to the Update/Inval Table (UPT). |
---|
5165 | // with a round robin priority between three FSMs : INIT_RSP > WRITE > XRAM_RSP > CLEANUP |
---|
5166 | // - The WRITE FSM initiates update transactions and sets new entry in UPT. |
---|
5167 | // - The XRAM_RSP FSM initiates inval transactions and sets new entry in UPT. |
---|
5168 | // - The INIT_RSP FSM complete those trasactions and erase the UPT entry. |
---|
5169 | // - The CLEANUP FSM decrement an entry in UPT. |
---|
5170 | // The resource is always allocated. |
---|
5171 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
5172 | |
---|
5173 | switch ( r_alloc_upt_fsm.read() ) |
---|
5174 | { |
---|
5175 | |
---|
5176 | //////////////////////// |
---|
5177 | case ALLOC_UPT_INIT_RSP: |
---|
5178 | if ( (r_init_rsp_fsm.read() != INIT_RSP_UPT_LOCK) && |
---|
5179 | (r_init_rsp_fsm.read() != INIT_RSP_UPT_CLEAR) ) |
---|
5180 | { |
---|
5181 | if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
5182 | (r_write_fsm.read() == WRITE_BC_UPT_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
5183 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
5184 | else if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
5185 | else if ((r_sc_fsm.read() == SC_UPT_LOCK) || |
---|
5186 | (r_sc_fsm.read() == SC_BC_UPT_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_SC; |
---|
5187 | } |
---|
5188 | break; |
---|
5189 | |
---|
5190 | ///////////////////// |
---|
5191 | case ALLOC_UPT_WRITE: |
---|
5192 | if ( (r_write_fsm.read() != WRITE_UPT_LOCK) && |
---|
5193 | (r_write_fsm.read() != WRITE_BC_UPT_LOCK)) |
---|
5194 | { |
---|
5195 | if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
5196 | else if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
5197 | else if ((r_sc_fsm.read() == SC_UPT_LOCK) || |
---|
5198 | (r_sc_fsm.read() == SC_BC_UPT_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_SC; |
---|
5199 | else if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
5200 | } |
---|
5201 | break; |
---|
5202 | |
---|
5203 | //////////////////////// |
---|
5204 | case ALLOC_UPT_XRAM_RSP: |
---|
5205 | if (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK) |
---|
5206 | { |
---|
5207 | if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
5208 | else if ((r_sc_fsm.read() == SC_UPT_LOCK) || |
---|
5209 | (r_sc_fsm.read() == SC_BC_UPT_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_SC; |
---|
5210 | else if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
5211 | else if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
5212 | (r_write_fsm.read() == WRITE_BC_UPT_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
5213 | } |
---|
5214 | break; |
---|
5215 | |
---|
5216 | ////////////////////////// |
---|
5217 | case ALLOC_UPT_CLEANUP: |
---|
5218 | if(r_cleanup_fsm.read() != CLEANUP_UPT_LOCK ) |
---|
5219 | { |
---|
5220 | if ((r_sc_fsm.read() == SC_UPT_LOCK) || |
---|
5221 | (r_sc_fsm.read() == SC_BC_UPT_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_SC; |
---|
5222 | else if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
5223 | else if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
5224 | (r_write_fsm.read() == WRITE_BC_UPT_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
5225 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
5226 | } |
---|
5227 | break; |
---|
5228 | |
---|
5229 | ////////////////////////// |
---|
5230 | case ALLOC_UPT_SC: |
---|
5231 | if( (r_sc_fsm.read() != SC_UPT_LOCK) && |
---|
5232 | (r_sc_fsm.read() != SC_BC_UPT_LOCK)) |
---|
5233 | { |
---|
5234 | if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
5235 | else if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
5236 | (r_write_fsm.read() == WRITE_BC_UPT_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
5237 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
5238 | else if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
5239 | } |
---|
5240 | break; |
---|
5241 | |
---|
5242 | } // end switch r_alloc_upt_fsm |
---|
5243 | |
---|
5244 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5245 | // ALLOC_DIR FSM |
---|
5246 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5247 | // The ALLOC_DIR FSM allocates the access to the directory and |
---|
5248 | // the data cache with a round robin priority between 5 user FSMs : |
---|
5249 | // The cyclic ordering is READ > WRITE > SC > CLEANUP > XRAM_RSP |
---|
5250 | // The ressource is always allocated. |
---|
5251 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
5252 | |
---|
5253 | switch ( r_alloc_dir_fsm.read() ) |
---|
5254 | { |
---|
5255 | |
---|
5256 | //////////////////// |
---|
5257 | case ALLOC_DIR_READ: |
---|
5258 | if ( ( (r_read_fsm.read() != READ_DIR_LOCK) && |
---|
5259 | (r_read_fsm.read() != READ_TRT_LOCK) && |
---|
5260 | (r_read_fsm.read() != READ_HEAP_LOCK)) |
---|
5261 | || |
---|
5262 | ( (r_read_fsm.read() == READ_HEAP_LOCK) && |
---|
5263 | (r_alloc_heap_fsm.read() == ALLOC_HEAP_READ) ) |
---|
5264 | || |
---|
5265 | ( (r_read_fsm.read() == READ_TRT_LOCK) && |
---|
5266 | (r_alloc_trt_fsm.read() == ALLOC_TRT_READ) ) ) |
---|
5267 | { |
---|
5268 | if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
5269 | else if (r_sc_fsm.read() == SC_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_SC; |
---|
5270 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
5271 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
5272 | } |
---|
5273 | break; |
---|
5274 | |
---|
5275 | ///////////////////// |
---|
5276 | case ALLOC_DIR_WRITE: |
---|
5277 | if ( ((r_write_fsm.read() != WRITE_DIR_LOCK) && |
---|
5278 | (r_write_fsm.read() != WRITE_MISS_TRT_LOCK) && |
---|
5279 | (r_write_fsm.read() != WRITE_DIR_READ) && |
---|
5280 | (r_write_fsm.read() != WRITE_DIR_HIT) && |
---|
5281 | (r_write_fsm.read() != WRITE_BC_TRT_LOCK) && |
---|
5282 | (r_write_fsm.read() != WRITE_BC_UPT_LOCK) && |
---|
5283 | (r_write_fsm.read() != WRITE_UPT_LOCK) && |
---|
5284 | (r_write_fsm.read() != WRITE_UPT_HEAP_LOCK)) |
---|
5285 | || |
---|
5286 | ( (r_write_fsm.read() == WRITE_UPT_HEAP_LOCK) && |
---|
5287 | (r_alloc_heap_fsm.read() == ALLOC_HEAP_WRITE) ) |
---|
5288 | || |
---|
5289 | ( (r_write_fsm.read() == WRITE_MISS_TRT_LOCK) && |
---|
5290 | (r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE) ) ) |
---|
5291 | { |
---|
5292 | if (r_sc_fsm.read() == SC_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_SC; |
---|
5293 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
5294 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
5295 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
5296 | } |
---|
5297 | break; |
---|
5298 | |
---|
5299 | //////////////////// |
---|
5300 | case ALLOC_DIR_SC: |
---|
5301 | if ( ((r_sc_fsm.read() != SC_DIR_LOCK) && |
---|
5302 | (r_sc_fsm.read() != SC_DIR_HIT_READ ) && |
---|
5303 | (r_sc_fsm.read() != SC_DIR_HIT_WRITE ) && |
---|
5304 | // (r_sc_fsm.read() != SC_MISS_TRT_LOCK ) && |
---|
5305 | (r_sc_fsm.read() != SC_BC_TRT_LOCK) && |
---|
5306 | (r_sc_fsm.read() != SC_BC_UPT_LOCK) && |
---|
5307 | (r_sc_fsm.read() != SC_UPT_LOCK) && |
---|
5308 | (r_sc_fsm.read() != SC_UPT_HEAP_LOCK)) |
---|
5309 | || |
---|
5310 | ( (r_sc_fsm.read() == SC_UPT_HEAP_LOCK) && |
---|
5311 | (r_alloc_heap_fsm.read() == ALLOC_HEAP_SC) ) |
---|
5312 | || |
---|
5313 | ( (r_sc_fsm.read() == SC_MISS_TRT_LOCK ) && |
---|
5314 | (r_alloc_trt_fsm.read() == ALLOC_TRT_SC) ) ) |
---|
5315 | { |
---|
5316 | if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
5317 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
5318 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
5319 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
5320 | } |
---|
5321 | break; |
---|
5322 | |
---|
5323 | /////////////////////// |
---|
5324 | case ALLOC_DIR_CLEANUP: |
---|
5325 | if ( (r_cleanup_fsm.read() != CLEANUP_DIR_LOCK) && |
---|
5326 | (r_cleanup_fsm.read() != CLEANUP_HEAP_LOCK) ) |
---|
5327 | { |
---|
5328 | if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
5329 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
5330 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
5331 | else if (r_sc_fsm.read() == SC_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_SC; |
---|
5332 | } |
---|
5333 | break; |
---|
5334 | //////////////////////// |
---|
5335 | case ALLOC_DIR_XRAM_RSP: |
---|
5336 | if ( (r_xram_rsp_fsm.read() != XRAM_RSP_DIR_LOCK) && |
---|
5337 | (r_xram_rsp_fsm.read() != XRAM_RSP_TRT_COPY) && |
---|
5338 | (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK)) |
---|
5339 | { |
---|
5340 | if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
5341 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
5342 | else if (r_sc_fsm.read() == SC_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_SC; |
---|
5343 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
5344 | } |
---|
5345 | break; |
---|
5346 | |
---|
5347 | } // end switch alloc_dir_fsm |
---|
5348 | |
---|
5349 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5350 | // ALLOC_TRT FSM |
---|
5351 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5352 | // The ALLOC_TRT fsm allocates the access to the Transaction Table (write buffer) |
---|
5353 | // with a round robin priority between 4 user FSMs : |
---|
5354 | // The cyclic priority is READ > WRITE > SC > XRAM_RSP |
---|
5355 | // The ressource is always allocated. |
---|
5356 | /////////////////////////////////////////////////////////////////////////////////// |
---|
5357 | |
---|
5358 | switch (r_alloc_trt_fsm) |
---|
5359 | { |
---|
5360 | |
---|
5361 | //////////////////// |
---|
5362 | case ALLOC_TRT_READ: |
---|
5363 | if ( r_read_fsm.read() != READ_TRT_LOCK ) |
---|
5364 | { |
---|
5365 | if ((r_write_fsm.read() == WRITE_MISS_TRT_LOCK) || |
---|
5366 | (r_write_fsm.read() == WRITE_BC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
5367 | else if ((r_sc_fsm.read() == SC_MISS_TRT_LOCK) || |
---|
5368 | (r_sc_fsm.read() == SC_BC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_SC; |
---|
5369 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
5370 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
5371 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ) ) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
5372 | } |
---|
5373 | break; |
---|
5374 | ///////////////////// |
---|
5375 | case ALLOC_TRT_WRITE: |
---|
5376 | if ( (r_write_fsm.read() != WRITE_MISS_TRT_LOCK) && |
---|
5377 | (r_write_fsm.read() != WRITE_BC_TRT_LOCK) && |
---|
5378 | (r_write_fsm.read() != WRITE_BC_UPT_LOCK)) |
---|
5379 | { |
---|
5380 | if ((r_sc_fsm.read() == SC_MISS_TRT_LOCK) || |
---|
5381 | (r_sc_fsm.read() == SC_BC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_SC; |
---|
5382 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
5383 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
5384 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
5385 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
5386 | } |
---|
5387 | break; |
---|
5388 | //////////////////// |
---|
5389 | case ALLOC_TRT_SC: |
---|
5390 | if ( (r_sc_fsm.read() != SC_MISS_TRT_LOCK) && |
---|
5391 | (r_sc_fsm.read() != SC_BC_TRT_LOCK) && |
---|
5392 | (r_sc_fsm.read() != SC_BC_UPT_LOCK)) |
---|
5393 | { |
---|
5394 | if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
5395 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
5396 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
5397 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
5398 | else if ((r_write_fsm.read() == WRITE_MISS_TRT_LOCK) || |
---|
5399 | (r_write_fsm.read() == WRITE_BC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
5400 | } |
---|
5401 | break; |
---|
5402 | //////////////////////// |
---|
5403 | case ALLOC_TRT_XRAM_RSP: |
---|
5404 | if ( (r_xram_rsp_fsm.read() != XRAM_RSP_TRT_COPY) && |
---|
5405 | (r_xram_rsp_fsm.read() != XRAM_RSP_DIR_UPDT) && |
---|
5406 | (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK)) { |
---|
5407 | if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
5408 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
5409 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
5410 | else if ((r_write_fsm.read() == WRITE_MISS_TRT_LOCK) || |
---|
5411 | (r_write_fsm.read() == WRITE_BC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
5412 | else if ((r_sc_fsm.read() == SC_MISS_TRT_LOCK) || |
---|
5413 | (r_sc_fsm.read() == SC_BC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_SC; |
---|
5414 | } |
---|
5415 | break; |
---|
5416 | //////////////////////// |
---|
5417 | case ALLOC_TRT_IXR_RSP: |
---|
5418 | if ( (r_ixr_rsp_fsm.read() != IXR_RSP_TRT_ERASE) && |
---|
5419 | (r_ixr_rsp_fsm.read() != IXR_RSP_TRT_READ) ) { |
---|
5420 | if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
5421 | else if ((r_write_fsm.read() == WRITE_MISS_TRT_LOCK) || |
---|
5422 | (r_write_fsm.read() == WRITE_BC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
5423 | else if ((r_sc_fsm.read() == SC_MISS_TRT_LOCK) || |
---|
5424 | (r_sc_fsm.read() == SC_BC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_SC; |
---|
5425 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
5426 | } |
---|
5427 | break; |
---|
5428 | |
---|
5429 | } // end switch alloc_trt_fsm |
---|
5430 | |
---|
5431 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5432 | // ALLOC_HEAP FSM |
---|
5433 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5434 | // The ALLOC_HEAP FSM allocates the access to the heap |
---|
5435 | // with a round robin priority between 5 user FSMs : |
---|
5436 | // The cyclic ordering is READ > WRITE > SC > CLEANUP > XRAM_RSP |
---|
5437 | // The ressource is always allocated. |
---|
5438 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
5439 | |
---|
5440 | switch ( r_alloc_heap_fsm.read() ) |
---|
5441 | { |
---|
5442 | //////////////////// |
---|
5443 | case ALLOC_HEAP_READ: |
---|
5444 | if ( (r_read_fsm.read() != READ_HEAP_LOCK) && |
---|
5445 | (r_read_fsm.read() != READ_HEAP_ERASE) ) |
---|
5446 | { |
---|
5447 | if (r_write_fsm.read() == WRITE_UPT_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_WRITE; |
---|
5448 | else if (r_sc_fsm.read() == SC_UPT_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_SC; |
---|
5449 | else if (r_cleanup_fsm.read() == CLEANUP_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_CLEANUP; |
---|
5450 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_HEAP_ERASE) r_alloc_heap_fsm = ALLOC_HEAP_XRAM_RSP; |
---|
5451 | } |
---|
5452 | break; |
---|
5453 | |
---|
5454 | ///////////////////// |
---|
5455 | case ALLOC_HEAP_WRITE: |
---|
5456 | if ( (r_write_fsm.read() != WRITE_UPT_HEAP_LOCK) && |
---|
5457 | (r_write_fsm.read() != WRITE_UPT_REQ) && |
---|
5458 | (r_write_fsm.read() != WRITE_UPT_NEXT) ) |
---|
5459 | { |
---|
5460 | if (r_sc_fsm.read() == SC_UPT_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_SC; |
---|
5461 | else if (r_cleanup_fsm.read() == CLEANUP_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_CLEANUP; |
---|
5462 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_HEAP_ERASE) r_alloc_heap_fsm = ALLOC_HEAP_XRAM_RSP; |
---|
5463 | else if (r_read_fsm.read() == READ_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_READ; |
---|
5464 | } |
---|
5465 | break; |
---|
5466 | |
---|
5467 | //////////////////// |
---|
5468 | case ALLOC_HEAP_SC: |
---|
5469 | if ( (r_sc_fsm.read() != SC_UPT_HEAP_LOCK) && |
---|
5470 | (r_sc_fsm.read() != SC_UPT_REQ ) && |
---|
5471 | (r_sc_fsm.read() != SC_UPT_NEXT) ) |
---|
5472 | { |
---|
5473 | if (r_cleanup_fsm.read() == CLEANUP_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_CLEANUP; |
---|
5474 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_HEAP_ERASE) r_alloc_heap_fsm = ALLOC_HEAP_XRAM_RSP; |
---|
5475 | else if (r_read_fsm.read() == READ_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_READ; |
---|
5476 | else if (r_write_fsm.read() == WRITE_UPT_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_WRITE; |
---|
5477 | } |
---|
5478 | break; |
---|
5479 | |
---|
5480 | /////////////////////// |
---|
5481 | case ALLOC_HEAP_CLEANUP: |
---|
5482 | if ( (r_cleanup_fsm.read() != CLEANUP_HEAP_LOCK) && |
---|
5483 | (r_cleanup_fsm.read() != CLEANUP_HEAP_SEARCH)&& |
---|
5484 | (r_cleanup_fsm.read() != CLEANUP_HEAP_CLEAN) ) |
---|
5485 | { |
---|
5486 | if (r_xram_rsp_fsm.read() == XRAM_RSP_HEAP_ERASE) r_alloc_heap_fsm = ALLOC_HEAP_XRAM_RSP; |
---|
5487 | else if (r_read_fsm.read() == READ_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_READ; |
---|
5488 | else if (r_write_fsm.read() == WRITE_UPT_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_WRITE; |
---|
5489 | else if (r_sc_fsm.read() == SC_UPT_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_SC; |
---|
5490 | } |
---|
5491 | break; |
---|
5492 | //////////////////////// |
---|
5493 | case ALLOC_HEAP_XRAM_RSP: |
---|
5494 | if ( r_xram_rsp_fsm.read() != XRAM_RSP_HEAP_ERASE ) |
---|
5495 | { |
---|
5496 | if (r_read_fsm.read() == READ_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_READ; |
---|
5497 | else if (r_write_fsm.read() == WRITE_UPT_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_WRITE; |
---|
5498 | else if (r_sc_fsm.read() == SC_UPT_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_SC; |
---|
5499 | else if (r_cleanup_fsm.read() == CLEANUP_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_CLEANUP; |
---|
5500 | } |
---|
5501 | break; |
---|
5502 | |
---|
5503 | } // end switch alloc_heap_fsm |
---|
5504 | |
---|
5505 | |
---|
5506 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5507 | // TGT_CMD to READ FIFO |
---|
5508 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5509 | |
---|
5510 | if ( cmd_read_fifo_put ) { |
---|
5511 | if ( cmd_read_fifo_get ) { |
---|
5512 | m_cmd_read_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
5513 | m_cmd_read_length_fifo.put_and_get(p_vci_tgt.plen.read()>>2); |
---|
5514 | m_cmd_read_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
5515 | m_cmd_read_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
5516 | m_cmd_read_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
5517 | } else { |
---|
5518 | m_cmd_read_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
5519 | m_cmd_read_length_fifo.simple_put(p_vci_tgt.plen.read()>>2); |
---|
5520 | m_cmd_read_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
5521 | m_cmd_read_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
5522 | m_cmd_read_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
5523 | } |
---|
5524 | } else { |
---|
5525 | if ( cmd_read_fifo_get ) { |
---|
5526 | m_cmd_read_addr_fifo.simple_get(); |
---|
5527 | m_cmd_read_length_fifo.simple_get(); |
---|
5528 | m_cmd_read_srcid_fifo.simple_get(); |
---|
5529 | m_cmd_read_trdid_fifo.simple_get(); |
---|
5530 | m_cmd_read_pktid_fifo.simple_get(); |
---|
5531 | } |
---|
5532 | } |
---|
5533 | ///////////////////////////////////////////////////////////////////// |
---|
5534 | // TGT_CMD to WRITE FIFO |
---|
5535 | ///////////////////////////////////////////////////////////////////// |
---|
5536 | |
---|
5537 | if ( cmd_write_fifo_put ) { |
---|
5538 | if ( cmd_write_fifo_get ) { |
---|
5539 | m_cmd_write_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
5540 | m_cmd_write_eop_fifo.put_and_get(p_vci_tgt.eop.read()); |
---|
5541 | m_cmd_write_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
5542 | m_cmd_write_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
5543 | m_cmd_write_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
5544 | m_cmd_write_data_fifo.put_and_get(p_vci_tgt.wdata.read()); |
---|
5545 | m_cmd_write_be_fifo.put_and_get(p_vci_tgt.be.read()); |
---|
5546 | } else { |
---|
5547 | m_cmd_write_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
5548 | m_cmd_write_eop_fifo.simple_put(p_vci_tgt.eop.read()); |
---|
5549 | m_cmd_write_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
5550 | m_cmd_write_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
5551 | m_cmd_write_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
5552 | m_cmd_write_data_fifo.simple_put(p_vci_tgt.wdata.read()); |
---|
5553 | m_cmd_write_be_fifo.simple_put(p_vci_tgt.be.read()); |
---|
5554 | } |
---|
5555 | } else { |
---|
5556 | if ( cmd_write_fifo_get ) { |
---|
5557 | m_cmd_write_addr_fifo.simple_get(); |
---|
5558 | m_cmd_write_eop_fifo.simple_get(); |
---|
5559 | m_cmd_write_srcid_fifo.simple_get(); |
---|
5560 | m_cmd_write_trdid_fifo.simple_get(); |
---|
5561 | m_cmd_write_pktid_fifo.simple_get(); |
---|
5562 | m_cmd_write_data_fifo.simple_get(); |
---|
5563 | m_cmd_write_be_fifo.simple_get(); |
---|
5564 | } |
---|
5565 | } |
---|
5566 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5567 | // TGT_CMD to SC FIFO |
---|
5568 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5569 | |
---|
5570 | if ( cmd_sc_fifo_put ) { |
---|
5571 | if ( cmd_sc_fifo_get ) { |
---|
5572 | m_cmd_sc_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
5573 | m_cmd_sc_eop_fifo.put_and_get(p_vci_tgt.eop.read()); |
---|
5574 | m_cmd_sc_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
5575 | m_cmd_sc_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
5576 | m_cmd_sc_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
5577 | m_cmd_sc_wdata_fifo.put_and_get(p_vci_tgt.wdata.read()); |
---|
5578 | } else { |
---|
5579 | m_cmd_sc_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
5580 | m_cmd_sc_eop_fifo.simple_put(p_vci_tgt.eop.read()); |
---|
5581 | m_cmd_sc_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
5582 | m_cmd_sc_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
5583 | m_cmd_sc_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
5584 | m_cmd_sc_wdata_fifo.simple_put(p_vci_tgt.wdata.read()); |
---|
5585 | } |
---|
5586 | } else { |
---|
5587 | if ( cmd_sc_fifo_get ) { |
---|
5588 | m_cmd_sc_addr_fifo.simple_get(); |
---|
5589 | m_cmd_sc_eop_fifo.simple_get(); |
---|
5590 | m_cmd_sc_srcid_fifo.simple_get(); |
---|
5591 | m_cmd_sc_trdid_fifo.simple_get(); |
---|
5592 | m_cmd_sc_pktid_fifo.simple_get(); |
---|
5593 | m_cmd_sc_wdata_fifo.simple_get(); |
---|
5594 | } |
---|
5595 | } |
---|
5596 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5597 | // WRITE to INIT_CMD FIFO |
---|
5598 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5599 | |
---|
5600 | if ( write_to_init_cmd_fifo_put ) { |
---|
5601 | if ( write_to_init_cmd_fifo_get ) { |
---|
5602 | m_write_to_init_cmd_inst_fifo.put_and_get(write_to_init_cmd_fifo_inst); |
---|
5603 | m_write_to_init_cmd_srcid_fifo.put_and_get(write_to_init_cmd_fifo_srcid); |
---|
5604 | #if L1_MULTI_CACHE |
---|
5605 | m_write_to_init_cmd_cache_id_fifo.put_and_get(write_to_init_cmd_fifo_cache_id); |
---|
5606 | #endif |
---|
5607 | } else { |
---|
5608 | m_write_to_init_cmd_inst_fifo.simple_put(write_to_init_cmd_fifo_inst); |
---|
5609 | m_write_to_init_cmd_srcid_fifo.simple_put(write_to_init_cmd_fifo_srcid); |
---|
5610 | #if L1_MULTI_CACHE |
---|
5611 | m_write_to_init_cmd_cache_id_fifo.simple_put(write_to_init_cmd_fifo_cache_id); |
---|
5612 | #endif |
---|
5613 | } |
---|
5614 | } else { |
---|
5615 | if ( write_to_init_cmd_fifo_get ) { |
---|
5616 | m_write_to_init_cmd_inst_fifo.simple_get(); |
---|
5617 | m_write_to_init_cmd_srcid_fifo.simple_get(); |
---|
5618 | #if L1_MULTI_CACHE |
---|
5619 | m_write_to_init_cmd_cache_id_fifo.simple_get(); |
---|
5620 | #endif |
---|
5621 | } |
---|
5622 | } |
---|
5623 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5624 | // XRAM_RSP to INIT_CMD FIFO |
---|
5625 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5626 | |
---|
5627 | if ( xram_rsp_to_init_cmd_fifo_put ) { |
---|
5628 | if ( xram_rsp_to_init_cmd_fifo_get ) { |
---|
5629 | m_xram_rsp_to_init_cmd_inst_fifo.put_and_get(xram_rsp_to_init_cmd_fifo_inst); |
---|
5630 | m_xram_rsp_to_init_cmd_srcid_fifo.put_and_get(xram_rsp_to_init_cmd_fifo_srcid); |
---|
5631 | #if L1_MULTI_CACHE |
---|
5632 | m_xram_rsp_to_init_cmd_cache_id_fifo.put_and_get(xram_rsp_to_init_cmd_fifo_cache_id); |
---|
5633 | #endif |
---|
5634 | } else { |
---|
5635 | m_xram_rsp_to_init_cmd_inst_fifo.simple_put(xram_rsp_to_init_cmd_fifo_inst); |
---|
5636 | m_xram_rsp_to_init_cmd_srcid_fifo.simple_put(xram_rsp_to_init_cmd_fifo_srcid); |
---|
5637 | #if L1_MULTI_CACHE |
---|
5638 | m_xram_rsp_to_init_cmd_cache_id_fifo.simple_put(xram_rsp_to_init_cmd_fifo_cache_id); |
---|
5639 | #endif |
---|
5640 | } |
---|
5641 | } else { |
---|
5642 | if ( xram_rsp_to_init_cmd_fifo_get ) { |
---|
5643 | m_xram_rsp_to_init_cmd_inst_fifo.simple_get(); |
---|
5644 | m_xram_rsp_to_init_cmd_srcid_fifo.simple_get(); |
---|
5645 | #if L1_MULTI_CACHE |
---|
5646 | m_xram_rsp_to_init_cmd_cache_id_fifo.simple_get(); |
---|
5647 | #endif |
---|
5648 | } |
---|
5649 | } |
---|
5650 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5651 | // SC to INIT_CMD FIFO |
---|
5652 | //////////////////////////////////////////////////////////////////////////////////// |
---|
5653 | |
---|
5654 | if ( sc_to_init_cmd_fifo_put ) { |
---|
5655 | if ( sc_to_init_cmd_fifo_get ) { |
---|
5656 | m_sc_to_init_cmd_inst_fifo.put_and_get(sc_to_init_cmd_fifo_inst); |
---|
5657 | m_sc_to_init_cmd_srcid_fifo.put_and_get(sc_to_init_cmd_fifo_srcid); |
---|
5658 | #if L1_MULTI_CACHE |
---|
5659 | m_sc_to_init_cmd_cache_id_fifo.put_and_get(sc_to_init_cmd_fifo_cache_id); |
---|
5660 | #endif |
---|
5661 | } else { |
---|
5662 | m_sc_to_init_cmd_inst_fifo.simple_put(sc_to_init_cmd_fifo_inst); |
---|
5663 | m_sc_to_init_cmd_srcid_fifo.simple_put(sc_to_init_cmd_fifo_srcid); |
---|
5664 | #if L1_MULTI_CACHE |
---|
5665 | m_sc_to_init_cmd_cache_id_fifo.simple_put(sc_to_init_cmd_fifo_cache_id); |
---|
5666 | #endif |
---|
5667 | } |
---|
5668 | } else { |
---|
5669 | if ( sc_to_init_cmd_fifo_get ) { |
---|
5670 | m_sc_to_init_cmd_inst_fifo.simple_get(); |
---|
5671 | m_sc_to_init_cmd_srcid_fifo.simple_get(); |
---|
5672 | #if L1_MULTI_CACHE |
---|
5673 | m_sc_to_init_cmd_cache_id_fifo.simple_get(); |
---|
5674 | #endif |
---|
5675 | } |
---|
5676 | } |
---|
5677 | |
---|
5678 | m_cpt_cycles++; |
---|
5679 | |
---|
5680 | } // end transition() |
---|
5681 | |
---|
5682 | ///////////////////////////// |
---|
5683 | tmpl(void)::genMoore() |
---|
5684 | ///////////////////////////// |
---|
5685 | { |
---|
5686 | //////////////////////////////////////////////////////////// |
---|
5687 | // Command signals on the p_vci_ixr port |
---|
5688 | //////////////////////////////////////////////////////////// |
---|
5689 | |
---|
5690 | p_vci_ixr.be = 0xF; |
---|
5691 | p_vci_ixr.pktid = 0; |
---|
5692 | p_vci_ixr.srcid = m_srcid_ixr; |
---|
5693 | p_vci_ixr.cons = false; |
---|
5694 | p_vci_ixr.wrap = false; |
---|
5695 | p_vci_ixr.contig = true; |
---|
5696 | p_vci_ixr.clen = 0; |
---|
5697 | p_vci_ixr.cfixed = false; |
---|
5698 | |
---|
5699 | if ( r_ixr_cmd_fsm.read() == IXR_CMD_READ_NLINE ) { |
---|
5700 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
5701 | p_vci_ixr.cmdval = true; |
---|
5702 | p_vci_ixr.address = (addr_t)(r_read_to_ixr_cmd_nline.read()*m_words*4); |
---|
5703 | p_vci_ixr.plen = m_words*4; |
---|
5704 | p_vci_ixr.wdata = 0x00000000; |
---|
5705 | p_vci_ixr.trdid = r_read_to_ixr_cmd_trdid.read(); |
---|
5706 | p_vci_ixr.eop = true; |
---|
5707 | } |
---|
5708 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_SC_NLINE ) { |
---|
5709 | if(r_sc_to_ixr_cmd_write.read()){ |
---|
5710 | p_vci_ixr.cmd = vci_param::CMD_WRITE; |
---|
5711 | p_vci_ixr.cmdval = true; |
---|
5712 | p_vci_ixr.address = (addr_t)((r_sc_to_ixr_cmd_nline.read()*m_words+r_ixr_cmd_cpt.read())*4); |
---|
5713 | p_vci_ixr.plen = m_words*4; |
---|
5714 | p_vci_ixr.wdata = r_sc_to_ixr_cmd_data[r_ixr_cmd_cpt.read()].read(); |
---|
5715 | p_vci_ixr.trdid = r_sc_to_ixr_cmd_trdid.read(); |
---|
5716 | p_vci_ixr.eop = (r_ixr_cmd_cpt == (m_words-1)); |
---|
5717 | } else { |
---|
5718 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
5719 | p_vci_ixr.cmdval = true; |
---|
5720 | p_vci_ixr.address = (addr_t)(r_sc_to_ixr_cmd_nline.read()*m_words*4); |
---|
5721 | p_vci_ixr.plen = m_words*4; |
---|
5722 | p_vci_ixr.wdata = 0x00000000; |
---|
5723 | p_vci_ixr.trdid = r_sc_to_ixr_cmd_trdid.read(); |
---|
5724 | p_vci_ixr.eop = true; |
---|
5725 | } |
---|
5726 | } |
---|
5727 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_WRITE_NLINE ) { |
---|
5728 | if(r_write_to_ixr_cmd_write.read()){ |
---|
5729 | p_vci_ixr.cmd = vci_param::CMD_WRITE; |
---|
5730 | p_vci_ixr.cmdval = true; |
---|
5731 | p_vci_ixr.address = (addr_t)((r_write_to_ixr_cmd_nline.read()*m_words+r_ixr_cmd_cpt.read())*4); |
---|
5732 | p_vci_ixr.plen = m_words*4; |
---|
5733 | p_vci_ixr.wdata = r_write_to_ixr_cmd_data[r_ixr_cmd_cpt.read()].read(); |
---|
5734 | p_vci_ixr.trdid = r_write_to_ixr_cmd_trdid.read(); |
---|
5735 | p_vci_ixr.eop = (r_ixr_cmd_cpt == (m_words-1)); |
---|
5736 | } else { |
---|
5737 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
5738 | p_vci_ixr.cmdval = true; |
---|
5739 | p_vci_ixr.address = (addr_t)(r_write_to_ixr_cmd_nline.read()*m_words*4); |
---|
5740 | p_vci_ixr.plen = m_words*4; |
---|
5741 | p_vci_ixr.wdata = 0x00000000; |
---|
5742 | p_vci_ixr.trdid = r_write_to_ixr_cmd_trdid.read(); |
---|
5743 | p_vci_ixr.eop = true; |
---|
5744 | } |
---|
5745 | } |
---|
5746 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_XRAM_DATA ) { |
---|
5747 | p_vci_ixr.cmd = vci_param::CMD_WRITE; |
---|
5748 | p_vci_ixr.cmdval = true; |
---|
5749 | p_vci_ixr.address = (addr_t)((r_xram_rsp_to_ixr_cmd_nline.read()*m_words+r_ixr_cmd_cpt.read())*4); |
---|
5750 | p_vci_ixr.plen = m_words*4; |
---|
5751 | p_vci_ixr.wdata = r_xram_rsp_to_ixr_cmd_data[r_ixr_cmd_cpt.read()].read(); |
---|
5752 | p_vci_ixr.trdid = r_xram_rsp_to_ixr_cmd_trdid.read(); |
---|
5753 | p_vci_ixr.eop = (r_ixr_cmd_cpt == (m_words-1)); |
---|
5754 | } else { |
---|
5755 | p_vci_ixr.cmdval = false; |
---|
5756 | p_vci_ixr.address = 0; |
---|
5757 | p_vci_ixr.plen = 0; |
---|
5758 | p_vci_ixr.wdata = 0; |
---|
5759 | p_vci_ixr.trdid = 0; |
---|
5760 | p_vci_ixr.eop = false; |
---|
5761 | } |
---|
5762 | |
---|
5763 | //////////////////////////////////////////////////// |
---|
5764 | // Response signals on the p_vci_ixr port |
---|
5765 | //////////////////////////////////////////////////// |
---|
5766 | |
---|
5767 | if ( ((r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP) && |
---|
5768 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) || |
---|
5769 | (r_ixr_rsp_fsm.read() == IXR_RSP_ACK) ) p_vci_ixr.rspack = true; |
---|
5770 | else p_vci_ixr.rspack = false; |
---|
5771 | |
---|
5772 | //////////////////////////////////////////////////// |
---|
5773 | // Command signals on the p_vci_tgt port |
---|
5774 | //////////////////////////////////////////////////// |
---|
5775 | |
---|
5776 | switch ((tgt_cmd_fsm_state_e)r_tgt_cmd_fsm.read()) { |
---|
5777 | case TGT_CMD_IDLE: |
---|
5778 | p_vci_tgt.cmdack = false; |
---|
5779 | break; |
---|
5780 | case TGT_CMD_READ: |
---|
5781 | p_vci_tgt.cmdack = m_cmd_read_addr_fifo.wok(); |
---|
5782 | break; |
---|
5783 | case TGT_CMD_WRITE: |
---|
5784 | p_vci_tgt.cmdack = m_cmd_write_addr_fifo.wok(); |
---|
5785 | break; |
---|
5786 | case TGT_CMD_ATOMIC: |
---|
5787 | p_vci_tgt.cmdack = m_cmd_sc_addr_fifo.wok(); |
---|
5788 | break; |
---|
5789 | default: |
---|
5790 | p_vci_tgt.cmdack = false; |
---|
5791 | break; |
---|
5792 | } |
---|
5793 | |
---|
5794 | //////////////////////////////////////////////////// |
---|
5795 | // Response signals on the p_vci_tgt port |
---|
5796 | //////////////////////////////////////////////////// |
---|
5797 | switch ( r_tgt_rsp_fsm.read() ) { |
---|
5798 | |
---|
5799 | case TGT_RSP_READ_IDLE: |
---|
5800 | case TGT_RSP_WRITE_IDLE: |
---|
5801 | case TGT_RSP_SC_IDLE: |
---|
5802 | case TGT_RSP_XRAM_IDLE: |
---|
5803 | case TGT_RSP_INIT_IDLE: |
---|
5804 | case TGT_RSP_CLEANUP_IDLE: |
---|
5805 | p_vci_tgt.rspval = false; |
---|
5806 | p_vci_tgt.rsrcid = 0; |
---|
5807 | p_vci_tgt.rdata = 0; |
---|
5808 | p_vci_tgt.rpktid = 0; |
---|
5809 | p_vci_tgt.rtrdid = 0; |
---|
5810 | p_vci_tgt.rerror = 0; |
---|
5811 | p_vci_tgt.reop = false; |
---|
5812 | break; |
---|
5813 | case TGT_RSP_READ: |
---|
5814 | p_vci_tgt.rspval = true; |
---|
5815 | p_vci_tgt.rdata = r_read_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read(); |
---|
5816 | p_vci_tgt.rsrcid = r_read_to_tgt_rsp_srcid.read(); |
---|
5817 | p_vci_tgt.rtrdid = r_read_to_tgt_rsp_trdid.read(); |
---|
5818 | p_vci_tgt.rpktid = r_read_to_tgt_rsp_pktid.read(); |
---|
5819 | p_vci_tgt.rerror = 0; |
---|
5820 | p_vci_tgt.reop = ( r_tgt_rsp_cpt.read() == (r_read_to_tgt_rsp_word.read()+r_read_to_tgt_rsp_length-1) ); |
---|
5821 | break; |
---|
5822 | case TGT_RSP_WRITE: |
---|
5823 | p_vci_tgt.rspval = true; |
---|
5824 | p_vci_tgt.rdata = 0; |
---|
5825 | p_vci_tgt.rsrcid = r_write_to_tgt_rsp_srcid.read(); |
---|
5826 | p_vci_tgt.rtrdid = r_write_to_tgt_rsp_trdid.read(); |
---|
5827 | p_vci_tgt.rpktid = r_write_to_tgt_rsp_pktid.read(); |
---|
5828 | p_vci_tgt.rerror = 0x2 & ( (1 << vci_param::E) - 1); |
---|
5829 | p_vci_tgt.reop = true; |
---|
5830 | break; |
---|
5831 | case TGT_RSP_CLEANUP: |
---|
5832 | p_vci_tgt.rspval = true; |
---|
5833 | p_vci_tgt.rdata = 0; |
---|
5834 | p_vci_tgt.rsrcid = r_cleanup_to_tgt_rsp_srcid.read(); |
---|
5835 | p_vci_tgt.rtrdid = r_cleanup_to_tgt_rsp_trdid.read(); |
---|
5836 | p_vci_tgt.rpktid = r_cleanup_to_tgt_rsp_pktid.read(); |
---|
5837 | p_vci_tgt.rerror = 0; // Can be a SC rsp |
---|
5838 | p_vci_tgt.reop = true; |
---|
5839 | break; |
---|
5840 | case TGT_RSP_SC: |
---|
5841 | p_vci_tgt.rspval = true; |
---|
5842 | p_vci_tgt.rdata = r_sc_to_tgt_rsp_data.read(); |
---|
5843 | p_vci_tgt.rsrcid = r_sc_to_tgt_rsp_srcid.read(); |
---|
5844 | p_vci_tgt.rtrdid = r_sc_to_tgt_rsp_trdid.read(); |
---|
5845 | p_vci_tgt.rpktid = r_sc_to_tgt_rsp_pktid.read(); |
---|
5846 | p_vci_tgt.rerror = 0; |
---|
5847 | p_vci_tgt.reop = true; |
---|
5848 | break; |
---|
5849 | case TGT_RSP_XRAM: |
---|
5850 | p_vci_tgt.rspval = true; |
---|
5851 | p_vci_tgt.rdata = r_xram_rsp_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read(); |
---|
5852 | p_vci_tgt.rsrcid = r_xram_rsp_to_tgt_rsp_srcid.read(); |
---|
5853 | p_vci_tgt.rtrdid = r_xram_rsp_to_tgt_rsp_trdid.read(); |
---|
5854 | p_vci_tgt.rpktid = r_xram_rsp_to_tgt_rsp_pktid.read(); |
---|
5855 | p_vci_tgt.rerror = r_xram_rsp_to_tgt_rsp_rerror.read(); |
---|
5856 | p_vci_tgt.reop = (( r_tgt_rsp_cpt.read() |
---|
5857 | == (r_xram_rsp_to_tgt_rsp_word.read()+r_xram_rsp_to_tgt_rsp_length.read()-1)) |
---|
5858 | || r_xram_rsp_to_tgt_rsp_rerror.read()); |
---|
5859 | break; |
---|
5860 | case TGT_RSP_INIT: |
---|
5861 | p_vci_tgt.rspval = true; |
---|
5862 | p_vci_tgt.rdata = 0; |
---|
5863 | p_vci_tgt.rsrcid = r_init_rsp_to_tgt_rsp_srcid.read(); |
---|
5864 | p_vci_tgt.rtrdid = r_init_rsp_to_tgt_rsp_trdid.read(); |
---|
5865 | p_vci_tgt.rpktid = r_init_rsp_to_tgt_rsp_pktid.read(); |
---|
5866 | p_vci_tgt.rerror = 0; // Can be a SC rsp |
---|
5867 | p_vci_tgt.reop = true; |
---|
5868 | break; |
---|
5869 | } // end switch r_tgt_rsp_fsm |
---|
5870 | |
---|
5871 | /////////////////////////////////////////////////// |
---|
5872 | // Command signals on the p_vci_ini port |
---|
5873 | /////////////////////////////////////////////////// |
---|
5874 | |
---|
5875 | p_vci_ini.cmd = vci_param::CMD_WRITE; |
---|
5876 | p_vci_ini.srcid = m_srcid_ini; |
---|
5877 | p_vci_ini.cons = true; |
---|
5878 | p_vci_ini.wrap = false; |
---|
5879 | p_vci_ini.contig = false; |
---|
5880 | p_vci_ini.clen = 0; |
---|
5881 | p_vci_ini.cfixed = false; |
---|
5882 | |
---|
5883 | switch ( r_init_cmd_fsm.read() ) { |
---|
5884 | |
---|
5885 | case INIT_CMD_UPDT_IDLE: |
---|
5886 | case INIT_CMD_INVAL_IDLE: |
---|
5887 | case INIT_CMD_SC_UPDT_IDLE: |
---|
5888 | p_vci_ini.cmdval = false; |
---|
5889 | p_vci_ini.address = 0; |
---|
5890 | p_vci_ini.wdata = 0; |
---|
5891 | p_vci_ini.be = 0; |
---|
5892 | p_vci_ini.plen = 0; |
---|
5893 | p_vci_ini.trdid = 0; |
---|
5894 | p_vci_ini.pktid = 0; |
---|
5895 | p_vci_ini.eop = false; |
---|
5896 | break; |
---|
5897 | case INIT_CMD_INVAL_NLINE: |
---|
5898 | { |
---|
5899 | p_vci_ini.cmdval = m_xram_rsp_to_init_cmd_inst_fifo.rok(); |
---|
5900 | if(m_xram_rsp_to_init_cmd_inst_fifo.rok()){ |
---|
5901 | if(m_xram_rsp_to_init_cmd_inst_fifo.read()) { |
---|
5902 | p_vci_ini.address = (addr_t)(m_coherence_table[m_xram_rsp_to_init_cmd_srcid_fifo.read()]+4); |
---|
5903 | } else { |
---|
5904 | p_vci_ini.address = (addr_t)(m_coherence_table[m_xram_rsp_to_init_cmd_srcid_fifo.read()]); |
---|
5905 | } |
---|
5906 | } else p_vci_ini.address = 0; // prevent segmentation faults by reading an empty fifo |
---|
5907 | p_vci_ini.wdata = (uint32_t)r_xram_rsp_to_init_cmd_nline.read(); |
---|
5908 | p_vci_ini.be = ((r_xram_rsp_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
5909 | p_vci_ini.plen = 4; |
---|
5910 | p_vci_ini.trdid = r_xram_rsp_to_init_cmd_trdid.read(); |
---|
5911 | p_vci_ini.pktid = m_xram_rsp_to_init_cmd_cache_id_fifo.read(); |
---|
5912 | p_vci_ini.eop = true; |
---|
5913 | break; |
---|
5914 | } |
---|
5915 | case INIT_CMD_XRAM_BRDCAST: |
---|
5916 | p_vci_ini.cmdval = true; |
---|
5917 | p_vci_ini.address = m_broadcast_address; |
---|
5918 | p_vci_ini.wdata = (uint32_t)r_xram_rsp_to_init_cmd_nline.read(); |
---|
5919 | p_vci_ini.be = ((r_xram_rsp_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
5920 | p_vci_ini.plen = 4; |
---|
5921 | p_vci_ini.trdid = r_xram_rsp_to_init_cmd_trdid.read(); |
---|
5922 | p_vci_ini.pktid = 0; |
---|
5923 | p_vci_ini.eop = true; |
---|
5924 | break; |
---|
5925 | |
---|
5926 | case INIT_CMD_WRITE_BRDCAST: |
---|
5927 | p_vci_ini.cmdval = true; |
---|
5928 | p_vci_ini.address = m_broadcast_address; |
---|
5929 | p_vci_ini.wdata = (addr_t)r_write_to_init_cmd_nline.read(); |
---|
5930 | p_vci_ini.be = ((r_write_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
5931 | p_vci_ini.plen = 4 ; |
---|
5932 | p_vci_ini.eop = true; |
---|
5933 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
5934 | p_vci_ini.pktid = 0; |
---|
5935 | break; |
---|
5936 | case INIT_CMD_UPDT_NLINE: |
---|
5937 | p_vci_ini.cmdval = m_write_to_init_cmd_inst_fifo.rok(); |
---|
5938 | if(m_write_to_init_cmd_inst_fifo.rok()){ |
---|
5939 | if(m_write_to_init_cmd_inst_fifo.read()) { |
---|
5940 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 12); |
---|
5941 | } else { |
---|
5942 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 8); |
---|
5943 | } |
---|
5944 | } else { |
---|
5945 | p_vci_ini.address = 0; |
---|
5946 | } |
---|
5947 | p_vci_ini.wdata = (uint32_t)r_write_to_init_cmd_nline.read(); |
---|
5948 | p_vci_ini.be = ((r_write_to_init_cmd_nline.read() >> 32 ) & 0x3); |
---|
5949 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
5950 | p_vci_ini.eop = false; |
---|
5951 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
5952 | p_vci_ini.pktid = m_write_to_init_cmd_cache_id_fifo.read(); |
---|
5953 | break; |
---|
5954 | case INIT_CMD_UPDT_INDEX: |
---|
5955 | p_vci_ini.cmdval = true; |
---|
5956 | if(m_write_to_init_cmd_inst_fifo.read()) { |
---|
5957 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 12); |
---|
5958 | } else { |
---|
5959 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 8); |
---|
5960 | } |
---|
5961 | p_vci_ini.wdata = r_write_to_init_cmd_index.read(); |
---|
5962 | p_vci_ini.be = 0xF; |
---|
5963 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
5964 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
5965 | p_vci_ini.pktid = m_write_to_init_cmd_cache_id_fifo.read(); |
---|
5966 | p_vci_ini.eop = false; |
---|
5967 | break; |
---|
5968 | case INIT_CMD_UPDT_DATA: |
---|
5969 | p_vci_ini.cmdval = true; |
---|
5970 | if(m_write_to_init_cmd_inst_fifo.read()) { |
---|
5971 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 12); |
---|
5972 | } else { |
---|
5973 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 8); |
---|
5974 | } |
---|
5975 | p_vci_ini.wdata = r_write_to_init_cmd_data[r_init_cmd_cpt.read() + |
---|
5976 | r_write_to_init_cmd_index.read()].read(); |
---|
5977 | p_vci_ini.be = r_write_to_init_cmd_be[r_init_cmd_cpt.read() + |
---|
5978 | r_write_to_init_cmd_index.read()].read() ; |
---|
5979 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
5980 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
5981 | p_vci_ini.pktid = m_write_to_init_cmd_cache_id_fifo.read(); |
---|
5982 | p_vci_ini.eop = ( r_init_cmd_cpt.read() == (r_write_to_init_cmd_count.read()-1) ); |
---|
5983 | break; |
---|
5984 | |
---|
5985 | case INIT_CMD_SC_BRDCAST: |
---|
5986 | p_vci_ini.cmdval = true; |
---|
5987 | p_vci_ini.address = m_broadcast_address; |
---|
5988 | p_vci_ini.wdata = (addr_t)r_sc_to_init_cmd_nline.read(); |
---|
5989 | p_vci_ini.be = ((r_sc_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
5990 | p_vci_ini.plen = 4 ; |
---|
5991 | p_vci_ini.eop = true; |
---|
5992 | p_vci_ini.trdid = r_sc_to_init_cmd_trdid.read(); |
---|
5993 | p_vci_ini.pktid = 0; |
---|
5994 | break; |
---|
5995 | case INIT_CMD_SC_UPDT_NLINE: |
---|
5996 | p_vci_ini.cmdval = m_sc_to_init_cmd_inst_fifo.rok(); |
---|
5997 | if(m_sc_to_init_cmd_inst_fifo.rok()){ |
---|
5998 | if( m_sc_to_init_cmd_inst_fifo.read() ) { |
---|
5999 | p_vci_ini.address = (addr_t)(m_coherence_table[m_sc_to_init_cmd_srcid_fifo.read()] + 12); |
---|
6000 | } else { |
---|
6001 | p_vci_ini.address = (addr_t)(m_coherence_table[m_sc_to_init_cmd_srcid_fifo.read()] + 8); |
---|
6002 | } |
---|
6003 | } else { |
---|
6004 | p_vci_ini.address = 0; |
---|
6005 | } |
---|
6006 | p_vci_ini.wdata = (uint32_t)r_sc_to_init_cmd_nline.read(); |
---|
6007 | p_vci_ini.be = ((r_sc_to_init_cmd_nline.read() >> 32 ) & 0x3); |
---|
6008 | if(r_sc_to_init_cmd_is_long.read()){ |
---|
6009 | p_vci_ini.plen = 4 * 4; |
---|
6010 | } else { |
---|
6011 | p_vci_ini.plen = 4 * 3; |
---|
6012 | } |
---|
6013 | p_vci_ini.eop = false; |
---|
6014 | p_vci_ini.trdid = r_sc_to_init_cmd_trdid.read(); |
---|
6015 | p_vci_ini.pktid = m_sc_to_init_cmd_cache_id_fifo.read(); |
---|
6016 | break; |
---|
6017 | case INIT_CMD_SC_UPDT_INDEX: |
---|
6018 | p_vci_ini.cmdval = true; |
---|
6019 | if( m_sc_to_init_cmd_inst_fifo.read() ) { |
---|
6020 | p_vci_ini.address = (addr_t)(m_coherence_table[m_sc_to_init_cmd_srcid_fifo.read()] + 12); |
---|
6021 | } else { |
---|
6022 | p_vci_ini.address = (addr_t)(m_coherence_table[m_sc_to_init_cmd_srcid_fifo.read()] + 8); |
---|
6023 | } |
---|
6024 | p_vci_ini.wdata = r_sc_to_init_cmd_index.read(); |
---|
6025 | p_vci_ini.be = 0xF; |
---|
6026 | if(r_sc_to_init_cmd_is_long.read()){ |
---|
6027 | p_vci_ini.plen = 4 * 4; |
---|
6028 | } else { |
---|
6029 | p_vci_ini.plen = 4 * 3; |
---|
6030 | } |
---|
6031 | p_vci_ini.trdid = r_sc_to_init_cmd_trdid.read(); |
---|
6032 | p_vci_ini.pktid = m_sc_to_init_cmd_cache_id_fifo.read(); |
---|
6033 | p_vci_ini.eop = false; |
---|
6034 | break; |
---|
6035 | case INIT_CMD_SC_UPDT_DATA: |
---|
6036 | p_vci_ini.cmdval = true; |
---|
6037 | if( m_sc_to_init_cmd_inst_fifo.read() ) { |
---|
6038 | p_vci_ini.address = (addr_t)(m_coherence_table[m_sc_to_init_cmd_srcid_fifo.read()] + 12); |
---|
6039 | } else { |
---|
6040 | p_vci_ini.address = (addr_t)(m_coherence_table[m_sc_to_init_cmd_srcid_fifo.read()] + 8); |
---|
6041 | } |
---|
6042 | p_vci_ini.wdata = r_sc_to_init_cmd_wdata.read(); |
---|
6043 | p_vci_ini.be = 0xF; |
---|
6044 | p_vci_ini.trdid = r_sc_to_init_cmd_trdid.read(); |
---|
6045 | p_vci_ini.pktid = m_sc_to_init_cmd_cache_id_fifo.read(); |
---|
6046 | if(r_sc_to_init_cmd_is_long.read()){ |
---|
6047 | p_vci_ini.plen = 4 * 4; |
---|
6048 | p_vci_ini.eop = false; |
---|
6049 | } else { |
---|
6050 | p_vci_ini.plen = 4 * 3; |
---|
6051 | p_vci_ini.eop = true; |
---|
6052 | } |
---|
6053 | break; |
---|
6054 | case INIT_CMD_SC_UPDT_DATA_HIGH: |
---|
6055 | p_vci_ini.cmdval = true; |
---|
6056 | if( m_sc_to_init_cmd_inst_fifo.read() ) { |
---|
6057 | p_vci_ini.address = (addr_t)(m_coherence_table[m_sc_to_init_cmd_srcid_fifo.read()] + 12); |
---|
6058 | } else { |
---|
6059 | p_vci_ini.address = (addr_t)(m_coherence_table[m_sc_to_init_cmd_srcid_fifo.read()] + 8); |
---|
6060 | } |
---|
6061 | p_vci_ini.wdata = r_sc_to_init_cmd_wdata_high.read(); |
---|
6062 | p_vci_ini.be = 0xF; |
---|
6063 | p_vci_ini.plen = 4 * 4; |
---|
6064 | p_vci_ini.trdid = r_sc_to_init_cmd_trdid.read(); |
---|
6065 | p_vci_ini.pktid = m_sc_to_init_cmd_cache_id_fifo.read(); |
---|
6066 | p_vci_ini.eop = true; |
---|
6067 | break; |
---|
6068 | |
---|
6069 | } // end switch r_init_cmd_fsm |
---|
6070 | |
---|
6071 | ////////////////////////////////////////////////////// |
---|
6072 | // Response signals on the p_vci_ini port |
---|
6073 | ////////////////////////////////////////////////////// |
---|
6074 | |
---|
6075 | if ( r_init_rsp_fsm.read() == INIT_RSP_IDLE ) p_vci_ini.rspack = true; |
---|
6076 | else p_vci_ini.rspack = false; |
---|
6077 | |
---|
6078 | ////////////////////////////////////////////////////// |
---|
6079 | // Response signals on the p_vci_tgt_cleanup port |
---|
6080 | ////////////////////////////////////////////////////// |
---|
6081 | p_vci_tgt_cleanup.rspval = false; |
---|
6082 | p_vci_tgt_cleanup.rsrcid = 0; |
---|
6083 | p_vci_tgt_cleanup.rdata = 0; |
---|
6084 | p_vci_tgt_cleanup.rpktid = 0; |
---|
6085 | p_vci_tgt_cleanup.rtrdid = 0; |
---|
6086 | p_vci_tgt_cleanup.rerror = 0; |
---|
6087 | p_vci_tgt_cleanup.reop = false; |
---|
6088 | p_vci_tgt_cleanup.cmdack = false ; |
---|
6089 | |
---|
6090 | switch(r_cleanup_fsm.read()){ |
---|
6091 | case CLEANUP_IDLE: |
---|
6092 | { |
---|
6093 | p_vci_tgt_cleanup.cmdack = true ; |
---|
6094 | break; |
---|
6095 | } |
---|
6096 | case CLEANUP_RSP: |
---|
6097 | { |
---|
6098 | p_vci_tgt_cleanup.rspval = true; |
---|
6099 | p_vci_tgt_cleanup.rdata = 0; |
---|
6100 | p_vci_tgt_cleanup.rsrcid = r_cleanup_srcid.read(); |
---|
6101 | p_vci_tgt_cleanup.rpktid = r_cleanup_pktid.read(); |
---|
6102 | p_vci_tgt_cleanup.rtrdid = r_cleanup_trdid.read(); |
---|
6103 | p_vci_tgt_cleanup.rerror = 0x2 & ( (1 << vci_param::E) - 1); |
---|
6104 | p_vci_tgt_cleanup.reop = 1; |
---|
6105 | break; |
---|
6106 | } |
---|
6107 | |
---|
6108 | } |
---|
6109 | |
---|
6110 | } // end genMoore() |
---|
6111 | |
---|
6112 | }} // end name space |
---|
6113 | |
---|
6114 | // Local Variables: |
---|
6115 | // tab-width: 2 |
---|
6116 | // c-basic-offset: 2 |
---|
6117 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
---|
6118 | // indent-tabs-mode: nil |
---|
6119 | // End: |
---|
6120 | |
---|
6121 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
---|
6122 | |
---|