[2] | 1 | /* -*- c++ -*- |
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| 2 | * File : vci_mem_cache_v1.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 choichillon.christophe@gmail.com |
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| 28 | */ |
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| 29 | #include "../include/vci_mem_cache_v1.h" |
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| 30 | |
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| 31 | #define VHDL_ACCURATE |
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| 32 | |
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| 33 | //#define IDEBUG |
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| 34 | //#define DEBUG_VCI_MEM_CACHE 2 |
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[32] | 35 | #define RANDOMIZE_SC |
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[2] | 36 | |
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| 37 | namespace soclib { namespace caba { |
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| 38 | |
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| 39 | #ifdef DEBUG_VCI_MEM_CACHE |
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| 40 | const char *tgt_cmd_fsm_str[] = { |
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| 41 | "TGT_CMD_IDLE", |
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| 42 | "TGT_CMD_READ", |
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| 43 | "TGT_CMD_READ_EOP", |
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| 44 | "TGT_CMD_WRITE", |
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| 45 | "TGT_CMD_ATOMIC", |
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| 46 | }; |
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| 47 | const char *tgt_rsp_fsm_str[] = { |
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| 48 | "TGT_RSP_READ_IDLE", |
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| 49 | "TGT_RSP_WRITE_IDLE", |
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| 50 | "TGT_RSP_LLSC_IDLE", |
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| 51 | "TGT_RSP_XRAM_IDLE", |
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| 52 | "TGT_RSP_INIT_IDLE", |
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| 53 | "TGT_RSP_CLEANUP_IDLE", |
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| 54 | "TGT_RSP_READ_TEST", |
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| 55 | "TGT_RSP_READ_WORD", |
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| 56 | "TGT_RSP_READ_LINE", |
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| 57 | "TGT_RSP_WRITE", |
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| 58 | "TGT_RSP_LLSC", |
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| 59 | "TGT_RSP_XRAM_TEST", |
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| 60 | "TGT_RSP_XRAM_WORD", |
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| 61 | "TGT_RSP_XRAM_LINE", |
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| 62 | "TGT_RSP_INIT", |
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| 63 | "TGT_RSP_CLEANUP", |
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| 64 | }; |
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| 65 | const char *init_cmd_fsm_str[] = { |
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| 66 | "INIT_CMD_INVAL_IDLE", |
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| 67 | "INIT_CMD_INVAL_SEL", |
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| 68 | "INIT_CMD_INVAL_NLINE", |
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| 69 | "INIT_CMD_UPDT_IDLE", |
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| 70 | "INIT_CMD_UPDT_SEL", |
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| 71 | "INIT_CMD_BRDCAST", |
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| 72 | "INIT_CMD_UPDT_NLINE", |
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| 73 | "INIT_CMD_UPDT_INDEX", |
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| 74 | "INIT_CMD_UPDT_DATA", |
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| 75 | }; |
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| 76 | const char *init_rsp_fsm_str[] = { |
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| 77 | "INIT_RSP_IDLE", |
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| 78 | "INIT_RSP_UPT_LOCK", |
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| 79 | "INIT_RSP_UPT_CLEAR", |
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| 80 | "INIT_RSP_END", |
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| 81 | }; |
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| 82 | const char *read_fsm_str[] = { |
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| 83 | "READ_IDLE", |
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| 84 | "READ_DIR_LOCK", |
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| 85 | "READ_DIR_HIT", |
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| 86 | "READ_RSP", |
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| 87 | "READ_TRT_LOCK", |
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| 88 | "READ_TRT_SET", |
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| 89 | "READ_XRAM_REQ", |
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| 90 | }; |
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| 91 | const char *write_fsm_str[] = { |
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| 92 | "WRITE_IDLE", |
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| 93 | "WRITE_NEXT", |
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| 94 | "WRITE_DIR_LOCK", |
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| 95 | "WRITE_DIR_HIT_READ", |
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| 96 | "WRITE_DIR_HIT", |
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| 97 | "WRITE_DIR_HIT_RSP", |
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| 98 | "WRITE_UPT_LOCK", |
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| 99 | "WRITE_WAIT_UPT", |
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| 100 | "WRITE_UPDATE", |
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| 101 | "WRITE_RSP", |
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| 102 | "WRITE_TRT_LOCK", |
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| 103 | "WRITE_TRT_DATA", |
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| 104 | "WRITE_TRT_SET", |
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| 105 | "WRITE_WAIT_TRT", |
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| 106 | "WRITE_XRAM_REQ", |
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| 107 | "WRITE_TRT_WRITE_LOCK", |
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| 108 | "WRITE_INVAL_LOCK", |
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| 109 | "WRITE_DIR_INVAL", |
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| 110 | "WRITE_INVAL", |
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| 111 | "WRITE_XRAM_SEND", |
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| 112 | }; |
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| 113 | const char *ixr_rsp_fsm_str[] = { |
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| 114 | "IXR_RSP_IDLE", |
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| 115 | "IXR_RSP_ACK", |
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| 116 | "IXR_RSP_TRT_ERASE", |
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| 117 | "IXR_RSP_TRT_READ", |
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| 118 | }; |
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| 119 | const char *xram_rsp_fsm_str[] = { |
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| 120 | "XRAM_RSP_IDLE", |
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| 121 | "XRAM_RSP_TRT_COPY", |
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| 122 | "XRAM_RSP_TRT_DIRTY", |
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| 123 | "XRAM_RSP_DIR_LOCK", |
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| 124 | "XRAM_RSP_DIR_UPDT", |
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| 125 | "XRAM_RSP_DIR_RSP", |
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| 126 | "XRAM_RSP_INVAL_LOCK", |
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| 127 | "XRAM_RSP_INVAL_WAIT", |
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| 128 | "XRAM_RSP_INVAL", |
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| 129 | "XRAM_RSP_WRITE_DIRTY", |
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| 130 | }; |
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| 131 | const char *ixr_cmd_fsm_str[] = { |
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| 132 | "IXR_CMD_READ_IDLE", |
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| 133 | "IXR_CMD_WRITE_IDLE", |
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| 134 | "IXR_CMD_LLSC_IDLE", |
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| 135 | "IXR_CMD_XRAM_IDLE", |
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| 136 | "IXR_CMD_READ_NLINE", |
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| 137 | "IXR_CMD_WRITE_NLINE", |
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| 138 | "IXR_CMD_LLSC_NLINE", |
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| 139 | "IXR_CMD_XRAM_DATA", |
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| 140 | }; |
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| 141 | const char *llsc_fsm_str[] = { |
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| 142 | "LLSC_IDLE", |
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| 143 | "LL_DIR_LOCK", |
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| 144 | "LL_DIR_HIT", |
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| 145 | "LL_RSP", |
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| 146 | "SC_DIR_LOCK", |
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| 147 | "SC_DIR_HIT", |
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| 148 | "SC_RSP_FALSE", |
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| 149 | "SC_RSP_TRUE", |
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| 150 | "LLSC_TRT_LOCK", |
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| 151 | "LLSC_TRT_SET", |
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| 152 | "LLSC_XRAM_REQ", |
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| 153 | }; |
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| 154 | const char *cleanup_fsm_str[] = { |
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| 155 | "CLEANUP_IDLE", |
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| 156 | "CLEANUP_DIR_LOCK", |
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| 157 | "CLEANUP_DIR_WRITE", |
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| 158 | "CLEANUP_UPT_LOCK", |
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| 159 | "CLEANUP_UPT_WRITE", |
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| 160 | "CLEANUP_WRITE_RSP", |
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| 161 | "CLEANUP_RSP", |
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| 162 | }; |
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| 163 | const char *alloc_dir_fsm_str[] = { |
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| 164 | "ALLOC_DIR_READ", |
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| 165 | "ALLOC_DIR_WRITE", |
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| 166 | "ALLOC_DIR_LLSC", |
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| 167 | "ALLOC_DIR_CLEANUP", |
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| 168 | "ALLOC_DIR_XRAM_RSP", |
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| 169 | }; |
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| 170 | const char *alloc_trt_fsm_str[] = { |
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| 171 | "ALLOC_TRT_READ", |
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| 172 | "ALLOC_TRT_WRITE", |
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| 173 | "ALLOC_TRT_LLSC", |
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| 174 | "ALLOC_TRT_XRAM_RSP", |
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| 175 | "ALLOC_TRT_IXR_RSP", |
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| 176 | }; |
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| 177 | const char *alloc_upt_fsm_str[] = { |
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| 178 | "ALLOC_UPT_WRITE", |
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| 179 | "ALLOC_UPT_XRAM_RSP", |
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| 180 | "ALLOC_UPT_INIT_RSP", |
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| 181 | "ALLOC_UPT_CLEANUP", |
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| 182 | }; |
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| 183 | #endif |
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| 184 | |
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| 185 | #define tmpl(x) template<typename vci_param> x VciMemCacheV1<vci_param> |
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| 186 | |
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| 187 | using soclib::common::uint32_log2; |
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| 188 | |
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| 189 | //////////////////////////////// |
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| 190 | // Constructor |
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| 191 | //////////////////////////////// |
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| 192 | |
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| 193 | tmpl(/**/)::VciMemCacheV1( |
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| 194 | sc_module_name name, |
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| 195 | const soclib::common::MappingTable &mtp, |
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| 196 | const soclib::common::MappingTable &mtc, |
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| 197 | const soclib::common::MappingTable &mtx, |
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| 198 | const soclib::common::IntTab &vci_ixr_index, |
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| 199 | const soclib::common::IntTab &vci_ini_index, |
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| 200 | const soclib::common::IntTab &vci_tgt_index, |
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| 201 | const soclib::common::IntTab &vci_tgt_index_cleanup, |
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| 202 | size_t nways, |
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| 203 | size_t nsets, |
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| 204 | size_t nwords) |
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| 205 | |
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| 206 | : soclib::caba::BaseModule(name), |
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| 207 | |
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| 208 | p_clk("clk"), |
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| 209 | p_resetn("resetn"), |
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| 210 | p_vci_tgt("vci_tgt"), |
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| 211 | p_vci_tgt_cleanup("vci_tgt_cleanup"), |
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| 212 | p_vci_ini("vci_ini"), |
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| 213 | p_vci_ixr("vci_ixr"), |
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| 214 | |
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| 215 | m_initiators( 32 ), |
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| 216 | m_ways( nways ), |
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| 217 | m_sets( nsets ), |
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| 218 | m_words( nwords ), |
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| 219 | m_srcid_ixr( mtx.indexForId(vci_ixr_index) ), |
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| 220 | m_srcid_ini( mtc.indexForId(vci_ini_index) ), |
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| 221 | m_seglist(mtp.getSegmentList(vci_tgt_index)), |
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| 222 | m_cseglist(mtc.getSegmentList(vci_tgt_index_cleanup)), |
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| 223 | m_coherence_table( mtc.getCoherenceTable<vci_addr_t>() ), |
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| 224 | m_atomic_tab( m_initiators ), |
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| 225 | m_transaction_tab( TRANSACTION_TAB_LINES, nwords ), |
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| 226 | m_update_tab( UPDATE_TAB_LINES ), |
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| 227 | m_cache_directory( nways, nsets, nwords, vci_param::N ), |
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| 228 | #define L2 soclib::common::uint32_log2 |
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| 229 | m_x( L2(m_words), 2), |
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| 230 | m_y( L2(m_sets), L2(m_words) + 2), |
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| 231 | m_z( vci_param::N - L2(m_sets) - L2(m_words) - 2, L2(m_sets) + L2(m_words) + 2), |
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| 232 | m_nline( vci_param::N - L2(m_words) - 2, L2(m_words) + 2), |
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| 233 | #undef L2 |
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| 234 | |
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| 235 | // FIFOs |
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| 236 | m_cmd_read_addr_fifo("m_cmd_read_addr_fifo", 4), |
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| 237 | m_cmd_read_word_fifo("m_cmd_read_word_fifo", 4), |
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| 238 | m_cmd_read_srcid_fifo("m_cmd_read_srcid_fifo", 4), |
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| 239 | m_cmd_read_trdid_fifo("m_cmd_read_trdid_fifo", 4), |
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| 240 | m_cmd_read_pktid_fifo("m_cmd_read_pktid_fifo", 4), |
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| 241 | |
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| 242 | m_cmd_write_addr_fifo("m_cmd_write_addr_fifo",8), |
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| 243 | m_cmd_write_eop_fifo("m_cmd_write_eop_fifo",8), |
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| 244 | m_cmd_write_srcid_fifo("m_cmd_write_srcid_fifo",8), |
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| 245 | m_cmd_write_trdid_fifo("m_cmd_write_trdid_fifo",8), |
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| 246 | m_cmd_write_pktid_fifo("m_cmd_write_pktid_fifo",8), |
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| 247 | m_cmd_write_data_fifo("m_cmd_write_data_fifo",8), |
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| 248 | m_cmd_write_be_fifo("m_cmd_write_be_fifo",8), |
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| 249 | |
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| 250 | m_cmd_llsc_addr_fifo("m_cmd_llsc_addr_fifo",4), |
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| 251 | m_cmd_llsc_sc_fifo("m_cmd_llsc_sc_fifo",4), |
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| 252 | m_cmd_llsc_srcid_fifo("m_cmd_llsc_srcid_fifo",4), |
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| 253 | m_cmd_llsc_trdid_fifo("m_cmd_llsc_trdid_fifo",4), |
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| 254 | m_cmd_llsc_pktid_fifo("m_cmd_llsc_pktid_fifo",4), |
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| 255 | m_cmd_llsc_wdata_fifo("m_cmd_llsc_wdata_fifo",4), |
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| 256 | |
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| 257 | r_tgt_cmd_fsm("r_tgt_cmd_fsm"), |
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| 258 | nseg(0), |
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[19] | 259 | ncseg(0), |
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[2] | 260 | r_read_fsm("r_read_fsm"), |
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| 261 | r_write_fsm("r_write_fsm"), |
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| 262 | r_init_rsp_fsm("r_init_rsp_fsm"), |
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| 263 | r_cleanup_fsm("r_cleanup_fsm"), |
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| 264 | r_llsc_fsm("r_llsc_fsm"), |
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| 265 | r_ixr_rsp_fsm("r_ixr_rsp_fsm"), |
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| 266 | r_xram_rsp_fsm("r_xram_rsp_fsm"), |
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| 267 | r_ixr_cmd_fsm("r_ixr_cmd_fsm"), |
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| 268 | r_tgt_rsp_fsm("r_tgt_rsp_fsm"), |
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| 269 | r_init_cmd_fsm("r_init_cmd_fsm"), |
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| 270 | r_alloc_dir_fsm("r_alloc_dir_fsm"), |
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| 271 | r_alloc_trt_fsm("r_alloc_trt_fsm"), |
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| 272 | r_alloc_upt_fsm("r_alloc_upt_fsm") |
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| 273 | { |
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| 274 | assert(IS_POW_OF_2(nsets)); |
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| 275 | assert(IS_POW_OF_2(nwords)); |
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| 276 | assert(IS_POW_OF_2(nways)); |
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| 277 | assert(nsets); |
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| 278 | assert(nwords); |
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| 279 | assert(nways); |
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| 280 | assert(nsets <= 1024); |
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| 281 | assert(nwords <= 32); |
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| 282 | assert(nways <= 32); |
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| 283 | |
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| 284 | |
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| 285 | // Get the segments associated to the MemCache |
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| 286 | std::list<soclib::common::Segment>::iterator seg; |
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| 287 | |
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| 288 | for(seg = m_seglist.begin(); seg != m_seglist.end() ; seg++) { |
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| 289 | nseg++; |
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| 290 | } |
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| 291 | for(seg = m_cseglist.begin(); seg != m_cseglist.end() ; seg++) { |
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| 292 | ncseg++; |
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| 293 | } |
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| 294 | |
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| 295 | m_seg = new soclib::common::Segment*[nseg]; |
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| 296 | size_t i = 0; |
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| 297 | for ( seg = m_seglist.begin() ; seg != m_seglist.end() ; seg++ ) { |
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| 298 | m_seg[i] = &(*seg); |
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| 299 | i++; |
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| 300 | } |
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| 301 | m_cseg = new soclib::common::Segment*[ncseg]; |
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| 302 | i = 0; |
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| 303 | for ( seg = m_cseglist.begin() ; seg != m_cseglist.end() ; seg++ ) { |
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| 304 | m_cseg[i] = &(*seg); |
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| 305 | i++; |
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| 306 | } |
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| 307 | |
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| 308 | // Memory cache allocation & initialisation |
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| 309 | m_cache_data = new data_t**[nways]; |
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| 310 | for ( size_t i=0 ; i<nways ; ++i ) { |
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| 311 | m_cache_data[i] = new data_t*[nsets]; |
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| 312 | } |
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| 313 | for ( size_t i=0; i<nways; ++i ) { |
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| 314 | for ( size_t j=0; j<nsets; ++j ) { |
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| 315 | m_cache_data[i][j] = new data_t[nwords]; |
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| 316 | for ( size_t k=0; k<nwords; k++){ |
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| 317 | m_cache_data[i][j][k]=0; |
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| 318 | } |
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| 319 | } |
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| 320 | } |
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| 321 | |
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| 322 | // Allocation for IXR_RSP FSM |
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| 323 | r_ixr_rsp_to_xram_rsp_rok = new sc_signal<bool>[TRANSACTION_TAB_LINES]; |
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| 324 | |
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| 325 | // Allocation for XRAM_RSP FSM |
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| 326 | r_xram_rsp_victim_data = new sc_signal<data_t>[nwords]; |
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| 327 | r_xram_rsp_to_tgt_rsp_data = new sc_signal<data_t>[nwords]; |
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| 328 | r_xram_rsp_to_tgt_rsp_val = new sc_signal<bool>[nwords]; |
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| 329 | r_xram_rsp_to_ixr_cmd_data = new sc_signal<data_t>[nwords]; |
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| 330 | |
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| 331 | // Allocation for READ FSM |
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| 332 | r_read_data = new sc_signal<data_t>[nwords]; |
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| 333 | r_read_to_tgt_rsp_data = new sc_signal<data_t>[nwords]; |
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| 334 | r_read_to_tgt_rsp_val = new sc_signal<bool>[nwords]; |
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| 335 | |
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| 336 | // Allocation for WRITE FSM |
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| 337 | r_write_data = new sc_signal<data_t>[nwords]; |
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| 338 | r_write_be = new sc_signal<be_t>[nwords]; |
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| 339 | r_write_to_init_cmd_data = new sc_signal<data_t>[nwords]; |
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| 340 | r_write_to_init_cmd_we = new sc_signal<bool>[nwords]; |
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| 341 | r_write_to_ixr_cmd_data = new sc_signal<data_t>[nwords]; |
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| 342 | |
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| 343 | // Simulation |
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| 344 | |
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| 345 | SC_METHOD(transition); |
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| 346 | dont_initialize(); |
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| 347 | sensitive << p_clk.pos(); |
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| 348 | |
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| 349 | SC_METHOD(genMoore); |
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| 350 | dont_initialize(); |
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| 351 | sensitive << p_clk.neg(); |
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| 352 | |
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| 353 | } // end constructor |
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| 354 | |
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| 355 | ///////////////////////////////////////// |
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| 356 | // This function prints the statistics |
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| 357 | ///////////////////////////////////////// |
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| 358 | |
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| 359 | tmpl(void)::print_stats() |
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| 360 | { |
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| 361 | std::cout << "----------------------------------" << std::dec << std::endl; |
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| 362 | std::cout << "MEM_CACHE " << m_srcid_ini << " / Time = " << m_cpt_cycles << std::endl |
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| 363 | << "- READ RATE = " << (double)m_cpt_read/m_cpt_cycles << std::endl |
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| 364 | << "- READ MISS RATE = " << (double)m_cpt_read_miss/m_cpt_read << std::endl |
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| 365 | << "- WRITE RATE = " << (double)m_cpt_write/m_cpt_cycles << std::endl |
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| 366 | << "- WRITE MISS RATE = " << (double)m_cpt_write_miss/m_cpt_write << std::endl |
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| 367 | << "- WRITE BURST LENGTH = " << (double)m_cpt_write_cells/m_cpt_write << std::endl |
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| 368 | << "- UPDATE RATE = " << (double)m_cpt_update/m_cpt_cycles << std::endl |
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| 369 | << "- UPDATE ARITY = " << (double)m_cpt_update_mult/m_cpt_update << std::endl |
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| 370 | << "- INVAL MULTICAST RATE = " << (double)(m_cpt_inval-m_cpt_inval_brdcast)/m_cpt_cycles << std::endl |
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| 371 | << "- INVAL MULTICAST ARITY= " << (double)m_cpt_inval_mult/(m_cpt_inval-m_cpt_inval_brdcast) << std::endl |
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| 372 | << "- INVAL BROADCAST RATE = " << (double)m_cpt_inval_brdcast/m_cpt_cycles << std::endl |
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| 373 | << "- SAVE DIRTY RATE = " << (double)m_cpt_write_dirty/m_cpt_cycles << std::endl |
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| 374 | << "- CLEANUP RATE = " << (double)m_cpt_cleanup/m_cpt_cycles << std::endl |
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| 375 | << "- LL RATE = " << (double)m_cpt_ll/m_cpt_cycles << std::endl |
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| 376 | << "- SC RATE = " << (double)m_cpt_sc/m_cpt_cycles << std::endl; |
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| 377 | } |
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| 378 | |
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| 379 | ///////////////////////////////// |
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| 380 | tmpl(/**/)::~VciMemCacheV1() |
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| 381 | ///////////////////////////////// |
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| 382 | { |
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| 383 | for(size_t i=0; i<m_ways ; i++){ |
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| 384 | for(size_t j=0; j<m_sets ; j++){ |
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| 385 | delete [] m_cache_data[i][j]; |
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| 386 | } |
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| 387 | } |
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| 388 | for(size_t i=0; i<m_ways ; i++){ |
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| 389 | delete [] m_cache_data[i]; |
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| 390 | } |
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| 391 | delete [] m_cache_data; |
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| 392 | delete [] m_coherence_table; |
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| 393 | |
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| 394 | delete [] r_ixr_rsp_to_xram_rsp_rok; |
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| 395 | |
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| 396 | delete [] r_xram_rsp_victim_data; |
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| 397 | delete [] r_xram_rsp_to_tgt_rsp_data; |
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| 398 | delete [] r_xram_rsp_to_tgt_rsp_val; |
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| 399 | delete [] r_xram_rsp_to_ixr_cmd_data; |
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| 400 | |
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| 401 | delete [] r_read_data; |
---|
| 402 | delete [] r_read_to_tgt_rsp_data; |
---|
| 403 | delete [] r_read_to_tgt_rsp_val; |
---|
| 404 | |
---|
| 405 | delete [] r_write_data; |
---|
| 406 | delete [] r_write_be; |
---|
| 407 | delete [] r_write_to_init_cmd_data; |
---|
| 408 | } |
---|
| 409 | |
---|
| 410 | ////////////////////////////////// |
---|
| 411 | tmpl(void)::transition() |
---|
| 412 | ////////////////////////////////// |
---|
| 413 | { |
---|
| 414 | using soclib::common::uint32_log2; |
---|
| 415 | // RESET |
---|
| 416 | if ( ! p_resetn.read() ) { |
---|
| 417 | |
---|
| 418 | // Initializing FSMs |
---|
| 419 | r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 420 | r_tgt_rsp_fsm = TGT_RSP_READ_IDLE; |
---|
| 421 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
| 422 | r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
| 423 | r_read_fsm = READ_IDLE; |
---|
| 424 | r_write_fsm = WRITE_IDLE; |
---|
| 425 | r_llsc_fsm = LLSC_IDLE; |
---|
| 426 | r_cleanup_fsm = CLEANUP_IDLE; |
---|
| 427 | r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 428 | r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 429 | r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 430 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
| 431 | r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 432 | r_ixr_cmd_fsm = IXR_CMD_READ_IDLE; |
---|
| 433 | |
---|
| 434 | // Initializing Tables |
---|
| 435 | m_cache_directory.init(); |
---|
| 436 | m_atomic_tab.init(); |
---|
| 437 | m_transaction_tab.init(); |
---|
| 438 | |
---|
| 439 | // initializing FIFOs and communication Buffers |
---|
| 440 | |
---|
| 441 | m_cmd_read_addr_fifo.init(); |
---|
| 442 | m_cmd_read_word_fifo.init(); |
---|
| 443 | m_cmd_read_srcid_fifo.init(); |
---|
| 444 | m_cmd_read_trdid_fifo.init(); |
---|
| 445 | m_cmd_read_pktid_fifo.init(); |
---|
| 446 | |
---|
| 447 | m_cmd_write_addr_fifo.init(); |
---|
| 448 | m_cmd_write_eop_fifo.init(); |
---|
| 449 | m_cmd_write_srcid_fifo.init(); |
---|
| 450 | m_cmd_write_trdid_fifo.init(); |
---|
| 451 | m_cmd_write_pktid_fifo.init(); |
---|
| 452 | m_cmd_write_data_fifo.init(); |
---|
| 453 | |
---|
| 454 | m_cmd_llsc_addr_fifo.init(); |
---|
| 455 | m_cmd_llsc_srcid_fifo.init(); |
---|
| 456 | m_cmd_llsc_trdid_fifo.init(); |
---|
| 457 | m_cmd_llsc_pktid_fifo.init(); |
---|
| 458 | m_cmd_llsc_wdata_fifo.init(); |
---|
| 459 | m_cmd_llsc_sc_fifo.init(); |
---|
| 460 | |
---|
| 461 | r_read_to_tgt_rsp_req = false; |
---|
| 462 | r_read_to_ixr_cmd_req = false; |
---|
| 463 | |
---|
| 464 | r_write_to_tgt_rsp_req = false; |
---|
| 465 | r_write_to_ixr_cmd_req = false; |
---|
| 466 | r_write_to_init_cmd_req = false; |
---|
| 467 | |
---|
| 468 | r_cleanup_to_tgt_rsp_req = false; |
---|
| 469 | |
---|
| 470 | r_init_rsp_to_tgt_rsp_req = false; |
---|
| 471 | |
---|
[32] | 472 | r_llsc_lfsr = -1; |
---|
[2] | 473 | r_llsc_to_tgt_rsp_req = false; |
---|
| 474 | r_llsc_to_ixr_cmd_req = false; |
---|
| 475 | |
---|
| 476 | for(size_t i=0; i<TRANSACTION_TAB_LINES ; i++){ |
---|
| 477 | r_ixr_rsp_to_xram_rsp_rok[i] = false; |
---|
| 478 | } |
---|
| 479 | |
---|
| 480 | r_xram_rsp_to_tgt_rsp_req = false; |
---|
| 481 | r_xram_rsp_to_init_cmd_req = false; |
---|
| 482 | r_xram_rsp_to_ixr_cmd_req = false; |
---|
| 483 | r_xram_rsp_trt_index = 0; |
---|
| 484 | |
---|
| 485 | r_ixr_cmd_cpt = 0; |
---|
| 486 | |
---|
| 487 | r_copies_limit = 3; |
---|
| 488 | |
---|
| 489 | // Activity counters |
---|
| 490 | m_cpt_cycles = 0; |
---|
| 491 | m_cpt_read = 0; |
---|
| 492 | m_cpt_read_miss = 0; |
---|
| 493 | m_cpt_write = 0; |
---|
| 494 | m_cpt_write_miss = 0; |
---|
| 495 | m_cpt_write_cells = 0; |
---|
| 496 | m_cpt_write_dirty = 0; |
---|
| 497 | m_cpt_update = 0; |
---|
| 498 | m_cpt_update_mult = 0; |
---|
| 499 | m_cpt_inval_brdcast = 0; |
---|
| 500 | m_cpt_inval = 0; |
---|
| 501 | m_cpt_inval_mult = 0; |
---|
| 502 | m_cpt_cleanup = 0; |
---|
| 503 | m_cpt_ll = 0; |
---|
| 504 | m_cpt_sc = 0; |
---|
| 505 | |
---|
| 506 | return; |
---|
| 507 | } |
---|
| 508 | |
---|
| 509 | bool cmd_read_fifo_put = false; |
---|
| 510 | bool cmd_read_fifo_get = false; |
---|
| 511 | |
---|
| 512 | bool cmd_write_fifo_put = false; |
---|
| 513 | bool cmd_write_fifo_get = false; |
---|
| 514 | |
---|
| 515 | bool cmd_llsc_fifo_put = false; |
---|
| 516 | bool cmd_llsc_fifo_get = false; |
---|
| 517 | |
---|
| 518 | #if DEBUG_VCI_MEM_CACHE == 1 |
---|
| 519 | std::cout << "---------------------------------------------" << std::dec << std::endl; |
---|
| 520 | std::cout << "MEM_CACHE " << m_srcid_ini << " ; Time = " << m_cpt_cycles << std::endl |
---|
| 521 | << " - TGT_CMD FSM = " << tgt_cmd_fsm_str[r_tgt_cmd_fsm] << std::endl |
---|
| 522 | << " - TGT_RSP FSM = " << tgt_rsp_fsm_str[r_tgt_rsp_fsm] << std::endl |
---|
| 523 | << " - INIT_CMD FSM = " << init_cmd_fsm_str[r_init_cmd_fsm] << std::endl |
---|
| 524 | << " - INIT_RSP FSM = " << init_rsp_fsm_str[r_init_rsp_fsm] << std::endl |
---|
| 525 | << " - READ FSM = " << read_fsm_str[r_read_fsm] << std::endl |
---|
| 526 | << " - WRITE FSM = " << write_fsm_str[r_write_fsm] << std::endl |
---|
| 527 | << " - LLSC FSM = " << llsc_fsm_str[r_llsc_fsm] << std::endl |
---|
| 528 | << " - CLEANUP FSM = " << cleanup_fsm_str[r_cleanup_fsm] << std::endl |
---|
| 529 | << " - IXR_CMD FSM = " << ixr_cmd_fsm_str[r_ixr_cmd_fsm] << std::endl |
---|
| 530 | << " - IXR_RSP FSM = " << ixr_rsp_fsm_str[r_ixr_rsp_fsm] << std::endl |
---|
| 531 | << " - XRAM_RSP FSM = " << xram_rsp_fsm_str[r_xram_rsp_fsm] << std::endl |
---|
| 532 | << " - ALLOC_DIR FSM = " << alloc_dir_fsm_str[r_alloc_dir_fsm] << std::endl |
---|
| 533 | << " - ALLOC_TRT FSM = " << alloc_trt_fsm_str[r_alloc_trt_fsm] << std::endl |
---|
| 534 | << " - ALLOC_UPT FSM = " << alloc_upt_fsm_str[r_alloc_upt_fsm] << std::endl; |
---|
| 535 | #elif DEBUG_VCI_MEM_CACHE == 2 |
---|
| 536 | std::cout << "---------------------------------------------" << std::dec << std::endl; |
---|
| 537 | std::cout << "MEM_CACHE " << m_srcid_ini << " ; Time = " << m_cpt_cycles << std::endl |
---|
| 538 | << " - TGT_CMD FSM = " << tgt_cmd_fsm_str[r_tgt_cmd_fsm] << std::endl |
---|
| 539 | << " - TGT_RSP FSM = " << tgt_rsp_fsm_str[r_tgt_rsp_fsm] << std::endl |
---|
| 540 | << " - INIT_CMD FSM = " << init_cmd_fsm_str[r_init_cmd_fsm] << std::endl |
---|
| 541 | << " - INIT_RSP FSM = " << init_rsp_fsm_str[r_init_rsp_fsm] << std::endl |
---|
| 542 | << " - READ FSM = " << read_fsm_str[r_read_fsm] << std::endl |
---|
| 543 | << " - WRITE FSM = " << write_fsm_str[r_write_fsm] << std::endl |
---|
| 544 | << " - LLSC FSM = " << llsc_fsm_str[r_llsc_fsm] << std::endl |
---|
| 545 | << " - CLEANUP FSM = " << cleanup_fsm_str[r_cleanup_fsm] << std::endl |
---|
| 546 | << " - IXR_CMD FSM = " << ixr_cmd_fsm_str[r_ixr_cmd_fsm] << std::endl |
---|
| 547 | << " - IXR_RSP FSM = " << ixr_rsp_fsm_str[r_ixr_rsp_fsm] << std::endl |
---|
| 548 | << " - XRAM_RSP FSM = " << xram_rsp_fsm_str[r_xram_rsp_fsm] << std::endl |
---|
| 549 | << " - ALLOC_DIR FSM = " << alloc_dir_fsm_str[r_alloc_dir_fsm] << std::endl |
---|
| 550 | << " - ALLOC_TRT FSM = " << alloc_trt_fsm_str[r_alloc_trt_fsm] << std::endl |
---|
| 551 | << " - ALLOC_UPT FSM = " << alloc_upt_fsm_str[r_alloc_upt_fsm] << std::endl; |
---|
| 552 | std::cout << " - UPDATE/INVAL TABLE : " << std::endl; |
---|
| 553 | m_update_tab.print(); |
---|
| 554 | std::cout << " - TRANSACTION TABLE = : " << std::endl; |
---|
| 555 | for (unsigned int i = 0 ; i < m_transaction_tab.size() ; i++){ |
---|
| 556 | m_transaction_tab.print(i); |
---|
| 557 | } |
---|
| 558 | #endif |
---|
| 559 | |
---|
| 560 | |
---|
| 561 | |
---|
| 562 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 563 | // TGT_CMD FSM |
---|
| 564 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 565 | // The TGT_CMD_FSM controls the incoming VCI command pakets from the processors |
---|
| 566 | // |
---|
| 567 | // There is 4 types of packets for the m_mem_segment : |
---|
| 568 | // - READ : a READ request has a length of 1 VCI cell. It can be a single word |
---|
| 569 | // or an entire cache line, depending on the PLEN value. |
---|
| 570 | // - WRITE : a WRITE request has a maximum length of 16 cells, and can only |
---|
| 571 | // concern words in a same line. |
---|
| 572 | // - LL : The LL request has a length of 1 cell. |
---|
| 573 | // - SC : The SC request has a length of 1 cell. |
---|
| 574 | // The WDATA field contains the data to write. |
---|
| 575 | // |
---|
| 576 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 577 | |
---|
| 578 | switch ( r_tgt_cmd_fsm.read() ) { |
---|
| 579 | |
---|
| 580 | ////////////////// |
---|
| 581 | case TGT_CMD_IDLE: |
---|
| 582 | { |
---|
| 583 | if ( p_vci_tgt.cmdval ) { |
---|
| 584 | assert( (p_vci_tgt.srcid.read() < m_initiators) |
---|
| 585 | && "VCI_MEM_CACHE error in VCI_MEM_CACHE : The received SRCID is larger than 31"); |
---|
| 586 | |
---|
| 587 | bool reached = false; |
---|
| 588 | for ( size_t index = 0 ; index < nseg && !reached ; index++) |
---|
| 589 | { |
---|
| 590 | // if ( m_seg[index]->contains((addr_t)(p_vci_tgt.address.read())) ) { |
---|
| 591 | if ( m_seg[index]->contains(p_vci_tgt.address.read()) ) { |
---|
| 592 | reached = true; |
---|
| 593 | r_index = index; |
---|
| 594 | } |
---|
| 595 | } |
---|
| 596 | |
---|
| 597 | |
---|
| 598 | if ( !reached ) |
---|
| 599 | { |
---|
| 600 | std::cout << "VCI_MEM_CACHE Out of segment access in VCI_MEM_CACHE" << std::endl; |
---|
| 601 | std::cout << "Faulty address = " << std::hex << (addr_t)(p_vci_tgt.address.read()) << std::endl; |
---|
| 602 | std::cout << "Faulty initiator = " << std::dec << p_vci_tgt.srcid.read() << std::endl; |
---|
| 603 | exit(0); |
---|
| 604 | } |
---|
| 605 | else if ( p_vci_tgt.cmd.read() == vci_param::CMD_READ ) |
---|
| 606 | { |
---|
| 607 | r_tgt_cmd_fsm = TGT_CMD_READ; |
---|
| 608 | } |
---|
| 609 | else if (( p_vci_tgt.cmd.read() == vci_param::CMD_WRITE )) //&& ( p_vci_tgt.trdid.read() == 0x0 )) |
---|
| 610 | { |
---|
| 611 | r_tgt_cmd_fsm = TGT_CMD_WRITE; |
---|
| 612 | } |
---|
| 613 | else if ((p_vci_tgt.cmd.read() == vci_param::CMD_LOCKED_READ) || |
---|
| 614 | (p_vci_tgt.cmd.read() == vci_param::CMD_STORE_COND) ) |
---|
| 615 | { |
---|
| 616 | r_tgt_cmd_fsm = TGT_CMD_ATOMIC; |
---|
| 617 | } |
---|
| 618 | } |
---|
| 619 | break; |
---|
| 620 | } |
---|
| 621 | ////////////////// |
---|
| 622 | case TGT_CMD_READ: |
---|
| 623 | |
---|
| 624 | { |
---|
| 625 | assert(((p_vci_tgt.plen.read() == 4) || (p_vci_tgt.plen.read() == m_words*4)) |
---|
| 626 | && "VCI_MEM_CACHE All read request to the MemCache must have PLEN = 4 or PLEN = 4*nwords"); |
---|
| 627 | |
---|
| 628 | if ( p_vci_tgt.cmdval && m_cmd_read_addr_fifo.wok() ) { |
---|
| 629 | cmd_read_fifo_put = true; |
---|
| 630 | if ( p_vci_tgt.eop ) r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 631 | else r_tgt_cmd_fsm = TGT_CMD_READ_EOP; |
---|
| 632 | } |
---|
| 633 | break; |
---|
| 634 | } |
---|
| 635 | ////////////////////// |
---|
| 636 | case TGT_CMD_READ_EOP: |
---|
| 637 | { |
---|
| 638 | if ( p_vci_tgt.cmdval && p_vci_tgt.eop ){ |
---|
| 639 | r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 640 | } |
---|
| 641 | break; |
---|
| 642 | } |
---|
| 643 | /////////////////// |
---|
| 644 | case TGT_CMD_WRITE: |
---|
| 645 | { |
---|
| 646 | |
---|
| 647 | if ( p_vci_tgt.cmdval && m_cmd_write_addr_fifo.wok() ) { |
---|
| 648 | cmd_write_fifo_put = true; |
---|
| 649 | if( p_vci_tgt.eop ) r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 650 | |
---|
| 651 | } |
---|
| 652 | break; |
---|
| 653 | } |
---|
| 654 | //////////////////// |
---|
| 655 | case TGT_CMD_ATOMIC: |
---|
| 656 | { |
---|
| 657 | assert(p_vci_tgt.eop && "Memory Cache Error: LL or SC command with length > 1 "); |
---|
| 658 | |
---|
| 659 | if ( p_vci_tgt.cmdval && m_cmd_llsc_addr_fifo.wok() ) { |
---|
| 660 | cmd_llsc_fifo_put = true; |
---|
| 661 | r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 662 | } |
---|
| 663 | break; |
---|
| 664 | } |
---|
| 665 | } // end switch tgt_cmd_fsm |
---|
| 666 | |
---|
| 667 | ///////////////////////////////////////////////////////////////////////// |
---|
| 668 | // INIT_RSP FSM |
---|
| 669 | ///////////////////////////////////////////////////////////////////////// |
---|
| 670 | // This FSM controls the response to the update or invalidate requests |
---|
| 671 | // sent by the memory cache to the L1 caches : |
---|
| 672 | // |
---|
| 673 | // - update request initiated by the WRITE FSM. |
---|
| 674 | // The FSM decrements the proper entry in the Update/Inval Table. |
---|
| 675 | // It sends a request to the TGT_RSP FSM to complete the pending |
---|
| 676 | // write transaction (acknowledge response to the writer processor), |
---|
| 677 | // and clear the UPT entry when all responses have been received. |
---|
| 678 | // - invalidate request initiated by the XRAM_RSP FSM. |
---|
| 679 | // The FSM decrements the proper entry in the Update/Inval_Table, |
---|
| 680 | // and clear the entry when all responses have been received. |
---|
| 681 | // |
---|
| 682 | // All those response packets are one word, compact |
---|
| 683 | // packets complying with the VCI advanced format. |
---|
| 684 | // The index in the Table is defined in the RTRDID field, and |
---|
| 685 | // the Transaction type is defined in the Update/Inval Table. |
---|
| 686 | ///////////////////////////////////////////////////////////////////// |
---|
| 687 | |
---|
| 688 | switch ( r_init_rsp_fsm.read() ) { |
---|
| 689 | |
---|
| 690 | /////////////////// |
---|
| 691 | case INIT_RSP_IDLE: |
---|
| 692 | { |
---|
| 693 | |
---|
| 694 | if ( p_vci_ini.rspval ) { |
---|
| 695 | |
---|
| 696 | assert ( ( p_vci_ini.rtrdid.read() < m_update_tab.size() ) |
---|
| 697 | && "VCI_MEM_CACHE UPT index too large in VCI response paquet received by memory cache" ); |
---|
| 698 | assert ( p_vci_ini.reop |
---|
| 699 | && "VCI_MEM_CACHE All response packets to update/invalidate requests must be one cell" ); |
---|
| 700 | r_init_rsp_upt_index = p_vci_ini.rtrdid.read(); |
---|
| 701 | r_init_rsp_fsm = INIT_RSP_UPT_LOCK; |
---|
| 702 | } |
---|
| 703 | break; |
---|
| 704 | } |
---|
| 705 | /////////////////////// |
---|
| 706 | case INIT_RSP_UPT_LOCK: // decrement the number of expected responses |
---|
| 707 | { |
---|
| 708 | |
---|
| 709 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_INIT_RSP ) { |
---|
| 710 | size_t count = 0; |
---|
| 711 | bool valid = m_update_tab.decrement(r_init_rsp_upt_index.read(), count); |
---|
| 712 | #ifdef IDEBUG |
---|
| 713 | std::cout << sc_time_stamp() << " " << name() << " INIT_RSP_UPT_LOCK update table : " << std::endl; |
---|
| 714 | m_update_tab.print(); |
---|
| 715 | #endif |
---|
| 716 | assert ( valid |
---|
| 717 | && "VCI_MEM_CACHE Invalid UPT entry in VCI response paquet received by memory cache" ); |
---|
| 718 | |
---|
| 719 | if ( count == 0 ) r_init_rsp_fsm = INIT_RSP_UPT_CLEAR; |
---|
| 720 | else r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
| 721 | } |
---|
| 722 | break; |
---|
| 723 | } |
---|
| 724 | //////////////////////// |
---|
| 725 | case INIT_RSP_UPT_CLEAR: // clear the UPT entry |
---|
| 726 | { |
---|
| 727 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_INIT_RSP ) { |
---|
| 728 | r_init_rsp_srcid = m_update_tab.srcid(r_init_rsp_upt_index.read()); |
---|
| 729 | r_init_rsp_trdid = m_update_tab.trdid(r_init_rsp_upt_index.read()); |
---|
| 730 | r_init_rsp_pktid = m_update_tab.pktid(r_init_rsp_upt_index.read()); |
---|
| 731 | r_init_rsp_nline = m_update_tab.nline(r_init_rsp_upt_index.read()); |
---|
| 732 | bool need_rsp = m_update_tab.need_rsp(r_init_rsp_upt_index.read()); |
---|
| 733 | if ( need_rsp ) r_init_rsp_fsm = INIT_RSP_END; |
---|
| 734 | else r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
| 735 | m_update_tab.clear(r_init_rsp_upt_index.read()); |
---|
| 736 | #ifdef IDEBUG |
---|
| 737 | std::cout << sc_time_stamp() << " " << name() << " INIT_RSP_UPT_CLEAR update table : " << std::endl; |
---|
| 738 | m_update_tab.print(); |
---|
| 739 | #endif |
---|
| 740 | } |
---|
| 741 | break; |
---|
| 742 | } |
---|
| 743 | ////////////////// |
---|
| 744 | case INIT_RSP_END: |
---|
| 745 | { |
---|
| 746 | |
---|
| 747 | if ( !r_init_rsp_to_tgt_rsp_req ) { |
---|
| 748 | r_init_rsp_to_tgt_rsp_req = true; |
---|
| 749 | r_init_rsp_to_tgt_rsp_srcid = r_init_rsp_srcid.read(); |
---|
| 750 | r_init_rsp_to_tgt_rsp_trdid = r_init_rsp_trdid.read(); |
---|
| 751 | r_init_rsp_to_tgt_rsp_pktid = r_init_rsp_pktid.read(); |
---|
| 752 | r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
| 753 | } |
---|
| 754 | break; |
---|
| 755 | } |
---|
| 756 | } // end switch r_init_rsp_fsm |
---|
| 757 | |
---|
| 758 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 759 | // READ FSM |
---|
| 760 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 761 | // The READ FSM controls the read requests sent by processors. |
---|
| 762 | // It takes the lock protecting the cache directory to check the cache line status: |
---|
| 763 | // - In case of HIT, the fsm copies the data (one line, or one single word) |
---|
| 764 | // in the r_read_to_tgt_rsp buffer. It waits if this buffer is not empty. |
---|
| 765 | // The requesting initiator is registered in the cache directory. |
---|
| 766 | // - In case of MISS, the READ fsm takes the lock protecting the transaction tab. |
---|
| 767 | // If a read transaction to the XRAM for this line already exists, |
---|
| 768 | // or if the transaction tab is full, the fsm is stalled. |
---|
| 769 | // If a transaction entry is free, the READ fsm sends a request to the XRAM. |
---|
| 770 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 771 | |
---|
| 772 | switch ( r_read_fsm.read() ) { |
---|
| 773 | |
---|
| 774 | /////////////// |
---|
| 775 | case READ_IDLE: |
---|
| 776 | { |
---|
| 777 | if (m_cmd_read_addr_fifo.rok()) { |
---|
| 778 | m_cpt_read++; |
---|
| 779 | #ifdef VHDL_ACCURATE |
---|
| 780 | r_read_pass = false; |
---|
| 781 | #endif |
---|
| 782 | r_read_fsm = READ_DIR_LOCK; |
---|
| 783 | } |
---|
| 784 | break; |
---|
| 785 | } |
---|
| 786 | /////////////////// |
---|
| 787 | case READ_DIR_LOCK: // check directory for hit / miss |
---|
| 788 | { |
---|
| 789 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_READ ) { |
---|
| 790 | #ifdef VHDL_ACCURATE |
---|
| 791 | if(!r_read_pass.read()){ |
---|
| 792 | #endif |
---|
| 793 | size_t way = 0; |
---|
| 794 | DirectoryEntry entry = m_cache_directory.read(m_cmd_read_addr_fifo.read(), way); |
---|
| 795 | #ifdef IDEBUG |
---|
| 796 | std::cout << "In READ_DIR_LOCK printing the entry of address is : " << std::hex << m_cmd_read_addr_fifo.read() << std::endl; |
---|
| 797 | entry.print(); |
---|
| 798 | std::cout << "done" << std::endl; |
---|
| 799 | #endif |
---|
| 800 | |
---|
| 801 | r_read_is_cnt = entry.is_cnt; |
---|
| 802 | r_read_dirty = entry.dirty; |
---|
| 803 | r_read_tag = entry.tag; |
---|
| 804 | r_read_lock = entry.lock; |
---|
| 805 | r_read_way = way; |
---|
| 806 | r_read_word = m_cmd_read_word_fifo.read(); |
---|
| 807 | r_read_d_copies = entry.d_copies; |
---|
| 808 | r_read_i_copies = entry.i_copies; |
---|
| 809 | r_read_count = entry.count; |
---|
| 810 | #ifdef VHDL_ACCURATE |
---|
| 811 | r_read_pass = true; |
---|
| 812 | #endif |
---|
| 813 | |
---|
| 814 | // In case of hit, the read acces must be registered in the copies bit-vector |
---|
| 815 | if( entry.valid ) { |
---|
| 816 | r_read_fsm = READ_DIR_LOCK; |
---|
| 817 | } else { |
---|
| 818 | r_read_fsm = READ_TRT_LOCK; |
---|
| 819 | m_cpt_read_miss++; |
---|
| 820 | } |
---|
| 821 | |
---|
| 822 | #ifdef VHDL_ACCURATE |
---|
| 823 | } else { |
---|
| 824 | r_read_pass = false; |
---|
| 825 | r_read_fsm = READ_DIR_HIT; |
---|
| 826 | } |
---|
| 827 | #endif |
---|
| 828 | } |
---|
| 829 | break; |
---|
| 830 | } |
---|
| 831 | ////////////////// |
---|
| 832 | case READ_DIR_HIT: // read hit : update the memory cache |
---|
| 833 | { |
---|
| 834 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_READ ) { |
---|
| 835 | // signals generation |
---|
| 836 | bool inst_read = (m_cmd_read_trdid_fifo.read() & 0x2); |
---|
| 837 | bool cached_read = (m_cmd_read_trdid_fifo.read() & 0x1); |
---|
| 838 | bool is_cnt = ((r_read_count.read() >= r_copies_limit.read()) && cached_read) || r_read_is_cnt.read(); |
---|
| 839 | |
---|
| 840 | // read data in the cache |
---|
| 841 | size_t set = m_y[(vci_addr_t)(m_cmd_read_addr_fifo.read())]; |
---|
| 842 | size_t way = r_read_way.read(); |
---|
| 843 | for ( size_t i=0 ; i<m_words ; i++ ) { |
---|
| 844 | r_read_data[i] = m_cache_data[way][set][i]; |
---|
| 845 | } |
---|
| 846 | |
---|
| 847 | // update the cache directory (for the copies) |
---|
| 848 | DirectoryEntry entry; |
---|
| 849 | entry.valid = true; |
---|
| 850 | entry.is_cnt = is_cnt; // when we reach the limit of copies |
---|
| 851 | entry.dirty = r_read_dirty.read(); |
---|
| 852 | entry.tag = r_read_tag.read(); |
---|
| 853 | entry.lock = r_read_lock.read(); |
---|
| 854 | if(cached_read){ // Cached read, we update the copies vector |
---|
| 855 | if(inst_read && !is_cnt){ // Instruction read, vector mode |
---|
| 856 | assert(!(r_read_i_copies.read() & (0x1 << m_cmd_read_srcid_fifo.read())) && "MemCache Error : processor read on an already owned cache line"); |
---|
| 857 | entry.d_copies = r_read_d_copies.read(); |
---|
| 858 | entry.i_copies = r_read_i_copies.read() | (0x1 << m_cmd_read_srcid_fifo.read()); |
---|
| 859 | entry.count = r_read_count.read() + 1; |
---|
| 860 | } |
---|
| 861 | if(!inst_read && !is_cnt){ // Data read, vector mode |
---|
| 862 | assert(!(r_read_d_copies.read() & (0x1 << m_cmd_read_srcid_fifo.read())) && "MemCache Error : processor read on an already owned cache line"); |
---|
| 863 | entry.d_copies = r_read_d_copies.read() | (0x1 << m_cmd_read_srcid_fifo.read()); |
---|
| 864 | entry.i_copies = r_read_i_copies.read(); |
---|
| 865 | entry.count = r_read_count.read() + 1; |
---|
| 866 | } |
---|
| 867 | if( is_cnt ) { // Counter mode |
---|
| 868 | entry.count = r_read_count.read() + 1; |
---|
| 869 | entry.d_copies = 0; |
---|
| 870 | entry.i_copies = 0; |
---|
| 871 | } |
---|
| 872 | } else { // Uncached read |
---|
| 873 | entry.d_copies = r_read_d_copies.read(); |
---|
| 874 | entry.i_copies = r_read_i_copies.read(); |
---|
| 875 | entry.count = r_read_count.read(); |
---|
| 876 | } |
---|
| 877 | #ifdef IDEBUG |
---|
| 878 | std::cout << "In READ_DIR_HIT printing the entry of address is : " << std::endl; |
---|
| 879 | entry.print(); |
---|
| 880 | std::cout << "done" << std::endl; |
---|
| 881 | #endif |
---|
| 882 | |
---|
| 883 | m_cache_directory.write(set, way, entry); |
---|
| 884 | r_read_fsm = READ_RSP; |
---|
| 885 | } |
---|
| 886 | break; |
---|
| 887 | } |
---|
| 888 | ////////////// |
---|
| 889 | case READ_RSP: // request the TGT_RSP FSM to return data |
---|
| 890 | { |
---|
| 891 | if( !r_read_to_tgt_rsp_req ) { |
---|
| 892 | for ( size_t i=0 ; i<m_words ; i++ ) { |
---|
| 893 | r_read_to_tgt_rsp_data[i] = r_read_data[i]; |
---|
| 894 | if ( r_read_word ) { // single word |
---|
| 895 | r_read_to_tgt_rsp_val[i] = (i == m_x[(vci_addr_t)(m_cmd_read_addr_fifo.read())]); |
---|
| 896 | } else { // cache line |
---|
| 897 | r_read_to_tgt_rsp_val[i] = true; |
---|
| 898 | } |
---|
| 899 | } |
---|
| 900 | cmd_read_fifo_get = true; |
---|
| 901 | r_read_to_tgt_rsp_req = true; |
---|
| 902 | r_read_to_tgt_rsp_srcid = m_cmd_read_srcid_fifo.read(); |
---|
| 903 | r_read_to_tgt_rsp_trdid = m_cmd_read_trdid_fifo.read(); |
---|
| 904 | r_read_to_tgt_rsp_pktid = m_cmd_read_pktid_fifo.read(); |
---|
| 905 | r_read_fsm = READ_IDLE; |
---|
| 906 | } |
---|
| 907 | break; |
---|
| 908 | } |
---|
| 909 | /////////////////// |
---|
| 910 | case READ_TRT_LOCK: // read miss : check the Transaction Table |
---|
| 911 | { |
---|
| 912 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_READ ) { |
---|
| 913 | #ifdef IDEBUG |
---|
| 914 | std::cout << sc_time_stamp() << " " << name() << " READ_TRT_LOCK " << std::endl; |
---|
| 915 | #endif |
---|
| 916 | size_t index = 0; |
---|
| 917 | bool hit_read = m_transaction_tab.hit_read(m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())], index); |
---|
| 918 | bool hit_write = m_transaction_tab.hit_write(m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())]); |
---|
| 919 | bool wok = !m_transaction_tab.full(index); |
---|
| 920 | if( hit_read || !wok || hit_write ) { // missing line already requested or no space |
---|
| 921 | r_read_fsm = READ_IDLE; |
---|
| 922 | } else { // missing line is requested to the XRAM |
---|
| 923 | r_read_trt_index = index; |
---|
| 924 | r_read_fsm = READ_TRT_SET; |
---|
| 925 | } |
---|
| 926 | } |
---|
| 927 | break; |
---|
| 928 | } |
---|
| 929 | ////////////////// |
---|
| 930 | case READ_TRT_SET: |
---|
| 931 | { |
---|
| 932 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_READ ) { |
---|
| 933 | m_transaction_tab.set(r_read_trt_index.read(), |
---|
| 934 | true, |
---|
| 935 | m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())], |
---|
| 936 | m_cmd_read_srcid_fifo.read(), |
---|
| 937 | m_cmd_read_trdid_fifo.read(), |
---|
| 938 | m_cmd_read_pktid_fifo.read(), |
---|
| 939 | true, |
---|
| 940 | m_cmd_read_word_fifo.read(), |
---|
| 941 | m_x[(vci_addr_t)(m_cmd_read_addr_fifo.read())], |
---|
| 942 | std::vector<be_t>(m_words,0), |
---|
| 943 | std::vector<data_t>(m_words,0)); |
---|
| 944 | #ifdef IDEBUG |
---|
| 945 | std::cout << sc_time_stamp() << " " << name() << " READ_TRT_SET transaction table : " << std::endl; |
---|
| 946 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 947 | m_transaction_tab.print(i); |
---|
| 948 | #endif |
---|
| 949 | |
---|
| 950 | r_read_fsm = READ_XRAM_REQ; |
---|
| 951 | } |
---|
| 952 | break; |
---|
| 953 | } |
---|
| 954 | ///////////////////// |
---|
| 955 | case READ_XRAM_REQ: |
---|
| 956 | { |
---|
| 957 | if( !r_read_to_ixr_cmd_req ) { |
---|
| 958 | cmd_read_fifo_get = true; |
---|
| 959 | r_read_to_ixr_cmd_req = true; |
---|
| 960 | r_read_to_ixr_cmd_nline = m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())]; |
---|
| 961 | r_read_to_ixr_cmd_trdid = r_read_trt_index.read(); |
---|
| 962 | r_read_fsm = READ_IDLE; |
---|
| 963 | } |
---|
| 964 | break; |
---|
| 965 | } |
---|
| 966 | } // end switch read_fsm |
---|
| 967 | |
---|
| 968 | /////////////////////////////////////////////////////////////////////////////////// |
---|
| 969 | // WRITE FSM |
---|
| 970 | /////////////////////////////////////////////////////////////////////////////////// |
---|
| 971 | // The WRITE FSM handles the write bursts sent by the processors. |
---|
| 972 | // All addresses in a burst must be in the same cache line. |
---|
| 973 | // A complete write burst is consumed in the FIFO & copied to a local buffer. |
---|
| 974 | // Then the FSM takes the lock protecting the cache directory, to check |
---|
| 975 | // if the line is in the cache. |
---|
| 976 | // |
---|
| 977 | // - In case of HIT, the cache is updated. |
---|
| 978 | // If there is no other copy, an acknowledge response is immediately |
---|
| 979 | // returned to the writing processor. |
---|
| 980 | // if the data is cached by other processoris, the FSM takes the lock |
---|
| 981 | // protecting the Update Table (UPT) to register this update transaction. |
---|
| 982 | // If the UPT is full, it releases the lock and waits. Then, it sends |
---|
| 983 | // a multi-update request to all owners of the line (but the writer), |
---|
| 984 | // through the INIT_CMD FSM. In case of multi-update transaction, the WRITE FSM |
---|
| 985 | // does not respond to the writing processor, as this response will be sent by |
---|
| 986 | // the INIT_RSP FSM when all update responses have been received. |
---|
| 987 | // |
---|
| 988 | // - In case of MISS, the WRITE FSM takes the lock protecting the transaction |
---|
| 989 | // table (TRT). If a read transaction to the XRAM for this line already exists, |
---|
| 990 | // it writes in the TRT (write buffer). Otherwise, if a TRT entry is free, |
---|
| 991 | // the WRITE FSM register a new transaction in TRT, and sends a read line request |
---|
| 992 | // to the XRAM. If the TRT is full, it releases the lock, and waits. |
---|
| 993 | // Finally, the WRITE FSM returns an aknowledge response to the writing processor. |
---|
| 994 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 995 | |
---|
| 996 | switch ( r_write_fsm.read() ) { |
---|
| 997 | |
---|
| 998 | //////////////// |
---|
| 999 | case WRITE_IDLE: // copy first word of a write burst in local buffer |
---|
| 1000 | { |
---|
| 1001 | if ( m_cmd_write_addr_fifo.rok()) { |
---|
| 1002 | m_cpt_write++; |
---|
| 1003 | m_cpt_write_cells++; |
---|
| 1004 | // consume a word in the FIFO & write it in the local buffer |
---|
| 1005 | cmd_write_fifo_get = true; |
---|
| 1006 | size_t index = m_x[(vci_addr_t)(m_cmd_write_addr_fifo.read())]; |
---|
| 1007 | r_write_address = (addr_t)(m_cmd_write_addr_fifo.read()); |
---|
| 1008 | r_write_word_index = index; |
---|
| 1009 | r_write_word_count = 1; |
---|
| 1010 | r_write_data[index] = m_cmd_write_data_fifo.read(); |
---|
| 1011 | r_write_srcid = m_cmd_write_srcid_fifo.read(); |
---|
| 1012 | r_write_trdid = m_cmd_write_trdid_fifo.read(); |
---|
| 1013 | r_write_pktid = m_cmd_write_pktid_fifo.read(); |
---|
| 1014 | #ifdef VHDL_ACCURATE |
---|
| 1015 | r_write_pass = false; |
---|
| 1016 | #endif |
---|
| 1017 | |
---|
| 1018 | // the be field must be set for all words |
---|
| 1019 | for ( size_t i=0 ; i<m_words ; i++ ) { |
---|
| 1020 | if ( i == index ) r_write_be[i] = m_cmd_write_be_fifo.read(); |
---|
| 1021 | else r_write_be[i] = 0x0; |
---|
| 1022 | } |
---|
| 1023 | if( !((m_cmd_write_be_fifo.read() == 0x0)||(m_cmd_write_be_fifo.read() == 0xF)) ) |
---|
| 1024 | r_write_byte=true; |
---|
| 1025 | else r_write_byte=false; |
---|
| 1026 | |
---|
| 1027 | if( m_cmd_write_eop_fifo.read() ) r_write_fsm = WRITE_DIR_LOCK; |
---|
| 1028 | else r_write_fsm = WRITE_NEXT; |
---|
| 1029 | } |
---|
| 1030 | break; |
---|
| 1031 | } |
---|
| 1032 | //////////////// |
---|
| 1033 | case WRITE_NEXT: // copy next word of a write burst in local buffer |
---|
| 1034 | { |
---|
| 1035 | if ( m_cmd_write_addr_fifo.rok() ) { |
---|
| 1036 | m_cpt_write_cells++; |
---|
| 1037 | |
---|
| 1038 | // check that the next word is in the same cache line |
---|
| 1039 | assert( (m_nline[(vci_addr_t)(r_write_address.read())] == m_nline[(vci_addr_t)(m_cmd_write_addr_fifo.read())]) |
---|
| 1040 | && "VCI_MEM_CACHE write error in vci_mem_cache : write burst over a line" ); |
---|
| 1041 | // consume a word in the FIFO & write it in the local buffer |
---|
| 1042 | cmd_write_fifo_get=true; |
---|
| 1043 | size_t index = r_write_word_index.read() + r_write_word_count.read(); |
---|
| 1044 | r_write_be[index] = m_cmd_write_be_fifo.read(); |
---|
| 1045 | r_write_data[index] = m_cmd_write_data_fifo.read(); |
---|
| 1046 | r_write_word_count = r_write_word_count.read() + 1; |
---|
| 1047 | if( !((m_cmd_write_be_fifo.read() == 0x0)||(m_cmd_write_be_fifo.read() == 0xF)) ) |
---|
| 1048 | r_write_byte=true; |
---|
| 1049 | if ( m_cmd_write_eop_fifo.read() ) r_write_fsm = WRITE_DIR_LOCK; |
---|
| 1050 | } |
---|
| 1051 | break; |
---|
| 1052 | } |
---|
| 1053 | //////////////////// |
---|
| 1054 | case WRITE_DIR_LOCK: // access directory to check hit/miss |
---|
| 1055 | { |
---|
| 1056 | if ( r_alloc_dir_fsm.read() == ALLOC_DIR_WRITE ) { |
---|
| 1057 | #ifdef VHDL_ACCURATE |
---|
| 1058 | if (!r_write_pass.read()){ |
---|
| 1059 | #endif |
---|
| 1060 | size_t way = 0; |
---|
| 1061 | DirectoryEntry entry(m_cache_directory.read(r_write_address.read(), way)); |
---|
| 1062 | |
---|
| 1063 | // copy directory entry in local buffers in case of hit |
---|
| 1064 | if ( entry.valid ) { |
---|
| 1065 | r_write_is_cnt = entry.is_cnt; |
---|
| 1066 | r_write_lock = entry.lock; |
---|
| 1067 | r_write_tag = entry.tag; |
---|
| 1068 | r_write_d_copies = entry.d_copies; |
---|
| 1069 | r_write_i_copies = entry.i_copies; |
---|
| 1070 | r_write_count = entry.count; |
---|
| 1071 | r_write_way = way; |
---|
| 1072 | r_write_fsm = WRITE_DIR_LOCK; |
---|
| 1073 | r_write_pass = true; |
---|
| 1074 | } else { |
---|
| 1075 | r_write_fsm = WRITE_TRT_LOCK; |
---|
| 1076 | m_cpt_write_miss++; |
---|
| 1077 | } |
---|
| 1078 | #ifdef VHDL_ACCURATE |
---|
| 1079 | } else { |
---|
| 1080 | if(r_write_is_cnt.read() && r_write_count.read()){ |
---|
| 1081 | r_write_fsm = WRITE_DIR_HIT_READ; |
---|
| 1082 | } else { |
---|
| 1083 | if(r_write_byte.read()) |
---|
| 1084 | r_write_fsm = WRITE_DIR_HIT_READ; |
---|
| 1085 | else { |
---|
| 1086 | bool owner = (bool) (r_write_d_copies & (0x1 << r_write_srcid.read())); |
---|
| 1087 | bool no_update = (owner && (r_write_count == 1)) || (r_write_count==0); |
---|
| 1088 | if( no_update ) r_write_fsm = WRITE_DIR_HIT_RSP; |
---|
| 1089 | else r_write_fsm = WRITE_DIR_HIT; |
---|
| 1090 | } |
---|
| 1091 | } |
---|
| 1092 | r_write_pass = false; |
---|
| 1093 | } |
---|
| 1094 | #endif |
---|
| 1095 | } |
---|
| 1096 | break; |
---|
| 1097 | } |
---|
| 1098 | /////////////////// |
---|
| 1099 | case WRITE_DIR_HIT_READ: // read the cache and complete the buffer (data, when be!=0xF) |
---|
| 1100 | { |
---|
| 1101 | // update local buffer |
---|
| 1102 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1103 | size_t way = r_write_way.read(); |
---|
| 1104 | for(size_t i=0 ; i<m_words ; i++) { |
---|
| 1105 | data_t mask = 0; |
---|
| 1106 | if (r_write_be[i].read() & 0x1) mask = mask | 0x000000FF; |
---|
| 1107 | if (r_write_be[i].read() & 0x2) mask = mask | 0x0000FF00; |
---|
| 1108 | if (r_write_be[i].read() & 0x4) mask = mask | 0x00FF0000; |
---|
| 1109 | if (r_write_be[i].read() & 0x8) mask = mask | 0xFF000000; |
---|
| 1110 | if(r_write_be[i].read()||r_write_is_cnt.read()) { // complete only if mask is not null (for energy consumption) |
---|
| 1111 | r_write_data[i] = (r_write_data[i].read() & mask) | |
---|
| 1112 | (m_cache_data[way][set][i] & ~mask); |
---|
| 1113 | } |
---|
| 1114 | } // end for |
---|
| 1115 | |
---|
| 1116 | if(r_write_is_cnt.read() && r_write_count.read()){ |
---|
| 1117 | r_write_fsm = WRITE_TRT_WRITE_LOCK; |
---|
| 1118 | } else { |
---|
| 1119 | bool owner = (bool) (r_write_d_copies.read() & (0x1 << r_write_srcid.read())); |
---|
| 1120 | bool no_update = (owner && (r_write_count.read() == 1)) || (r_write_count.read()==0); |
---|
| 1121 | if( no_update ) r_write_fsm = WRITE_DIR_HIT_RSP; |
---|
| 1122 | else r_write_fsm = WRITE_DIR_HIT; |
---|
| 1123 | } |
---|
| 1124 | break; |
---|
| 1125 | } |
---|
| 1126 | /////////////////// |
---|
| 1127 | case WRITE_DIR_HIT: // update the cache (data & dirty bit) |
---|
| 1128 | { |
---|
| 1129 | // update directory with Dirty bit |
---|
| 1130 | DirectoryEntry entry; |
---|
| 1131 | entry.valid = true; |
---|
| 1132 | entry.dirty = true; |
---|
| 1133 | entry.tag = r_write_tag.read(); |
---|
| 1134 | entry.is_cnt = r_write_is_cnt.read(); |
---|
| 1135 | entry.lock = r_write_lock.read(); |
---|
| 1136 | entry.d_copies = r_write_d_copies.read(); |
---|
| 1137 | entry.i_copies = r_write_i_copies.read(); |
---|
| 1138 | entry.count = r_write_count.read(); |
---|
| 1139 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1140 | size_t way = r_write_way.read(); |
---|
| 1141 | m_cache_directory.write(set, way, entry); |
---|
| 1142 | |
---|
| 1143 | size_t nb_copies=0; |
---|
| 1144 | for(size_t i=0; i<32 ; i++) { |
---|
| 1145 | if( r_write_d_copies.read() & (1<<i) ) |
---|
| 1146 | nb_copies++; |
---|
| 1147 | } |
---|
| 1148 | for(size_t i=0; i<32 ; i++) { |
---|
| 1149 | if( r_write_i_copies.read() & (1<<i) ) |
---|
| 1150 | nb_copies++; |
---|
| 1151 | } |
---|
| 1152 | assert((nb_copies == r_write_count.read()) && "MemCache Error, inconsistency in the directory"); |
---|
| 1153 | |
---|
| 1154 | // write data in cache |
---|
| 1155 | for(size_t i=0 ; i<m_words ; i++) { |
---|
| 1156 | if ( r_write_be[i].read() ) { |
---|
| 1157 | m_cache_data[way][set][i] = r_write_data[i].read(); |
---|
| 1158 | } |
---|
| 1159 | } // end for |
---|
| 1160 | |
---|
| 1161 | // compute the actual number of copies & the modified bit vector |
---|
| 1162 | bool owner = (bool) (r_write_d_copies.read() & (0x1 << r_write_srcid.read())); |
---|
| 1163 | copy_t d_copies = r_write_d_copies.read() & ~(0x1 << r_write_srcid.read()); |
---|
| 1164 | r_write_d_copies = d_copies; |
---|
| 1165 | size_t count_signal = r_write_count.read(); |
---|
| 1166 | if(owner){ |
---|
| 1167 | count_signal = count_signal - 1; |
---|
| 1168 | } |
---|
| 1169 | r_write_count = count_signal; |
---|
| 1170 | |
---|
| 1171 | r_write_fsm = WRITE_UPT_LOCK; |
---|
| 1172 | break; |
---|
| 1173 | } |
---|
| 1174 | /////////////////// |
---|
| 1175 | case WRITE_DIR_HIT_RSP: // update the cache (data & dirty bit) (no update) |
---|
| 1176 | { |
---|
| 1177 | // update directory with Dirty bit |
---|
| 1178 | DirectoryEntry entry; |
---|
| 1179 | entry.valid = true; |
---|
| 1180 | entry.dirty = true; |
---|
| 1181 | entry.tag = r_write_tag.read(); |
---|
| 1182 | entry.is_cnt = r_write_is_cnt.read(); |
---|
| 1183 | entry.lock = r_write_lock.read(); |
---|
| 1184 | entry.d_copies = r_write_d_copies.read(); |
---|
| 1185 | entry.i_copies = r_write_i_copies.read(); |
---|
| 1186 | entry.count = r_write_count.read(); |
---|
| 1187 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1188 | size_t way = r_write_way.read(); |
---|
| 1189 | m_cache_directory.write(set, way, entry); |
---|
| 1190 | |
---|
| 1191 | size_t nb_copies=0; |
---|
| 1192 | for(size_t i=0; i<32 ; i++) { |
---|
| 1193 | if( r_write_d_copies.read() & (1<<i) ) |
---|
| 1194 | nb_copies++; |
---|
| 1195 | } |
---|
| 1196 | for(size_t i=0; i<32 ; i++) { |
---|
| 1197 | if( r_write_i_copies.read() & (1<<i) ) |
---|
| 1198 | nb_copies++; |
---|
| 1199 | } |
---|
| 1200 | assert((nb_copies == r_write_count.read()) && "MemCache Error, inconsistency in the directory"); |
---|
| 1201 | |
---|
| 1202 | // write data in cache |
---|
| 1203 | for(size_t i=0 ; i<m_words ; i++) { |
---|
| 1204 | if ( r_write_be[i].read() ) { |
---|
| 1205 | m_cache_data[way][set][i] = r_write_data[i].read(); |
---|
| 1206 | } |
---|
| 1207 | } // end for |
---|
| 1208 | |
---|
| 1209 | if ( !r_write_to_tgt_rsp_req.read() ) { |
---|
| 1210 | r_write_to_tgt_rsp_req = true; |
---|
| 1211 | r_write_to_tgt_rsp_srcid = r_write_srcid.read(); |
---|
| 1212 | r_write_to_tgt_rsp_trdid = r_write_trdid.read(); |
---|
| 1213 | r_write_to_tgt_rsp_pktid = r_write_pktid.read(); |
---|
| 1214 | r_write_fsm = WRITE_IDLE; |
---|
| 1215 | } else { |
---|
| 1216 | r_write_fsm = WRITE_RSP; |
---|
| 1217 | } |
---|
| 1218 | break; |
---|
| 1219 | } |
---|
| 1220 | ///////////////////// |
---|
| 1221 | case WRITE_UPT_LOCK: // Try to register the request in Update Table |
---|
| 1222 | { |
---|
| 1223 | |
---|
| 1224 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_WRITE ) { |
---|
| 1225 | bool wok = false; |
---|
| 1226 | size_t index = 0; |
---|
| 1227 | size_t srcid = r_write_srcid.read(); |
---|
| 1228 | size_t trdid = r_write_trdid.read(); |
---|
| 1229 | size_t pktid = r_write_pktid.read(); |
---|
| 1230 | addr_t nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1231 | size_t nb_copies = r_write_count.read(); |
---|
| 1232 | |
---|
| 1233 | wok =m_update_tab.set(true, // it's an update transaction |
---|
| 1234 | false, // it's not a broadcast |
---|
| 1235 | true, // it needs a response |
---|
| 1236 | srcid, |
---|
| 1237 | trdid, |
---|
| 1238 | pktid, |
---|
| 1239 | nline, |
---|
| 1240 | nb_copies, |
---|
| 1241 | index); |
---|
| 1242 | #ifdef IDEBUG |
---|
| 1243 | if(wok){ |
---|
| 1244 | std::cout << sc_time_stamp() << " " << name() << " WRITE_UPT_LOCK update table : " << std::endl; |
---|
| 1245 | m_update_tab.print(); |
---|
| 1246 | } |
---|
| 1247 | #endif |
---|
| 1248 | r_write_upt_index = index; |
---|
| 1249 | // releases the lock protecting Update Table if no entry... |
---|
| 1250 | if ( wok ) r_write_fsm = WRITE_UPDATE; |
---|
| 1251 | else r_write_fsm = WRITE_WAIT_UPT; |
---|
| 1252 | } |
---|
| 1253 | break; |
---|
| 1254 | } |
---|
| 1255 | //////////////////// |
---|
| 1256 | case WRITE_WAIT_UPT: // release the lock protecting UPT |
---|
| 1257 | { |
---|
| 1258 | r_write_fsm = WRITE_UPT_LOCK; |
---|
| 1259 | break; |
---|
| 1260 | } |
---|
| 1261 | ////////////////// |
---|
| 1262 | case WRITE_UPDATE: // send a multi-update request to INIT_CMD fsm |
---|
| 1263 | { |
---|
| 1264 | |
---|
| 1265 | if ( !r_write_to_init_cmd_req ) { |
---|
| 1266 | r_write_to_init_cmd_req = true; |
---|
| 1267 | r_write_to_init_cmd_brdcast = false; |
---|
| 1268 | r_write_to_init_cmd_trdid = r_write_upt_index.read(); |
---|
| 1269 | r_write_to_init_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1270 | r_write_to_init_cmd_index = r_write_word_index.read(); |
---|
| 1271 | r_write_to_init_cmd_count = r_write_word_count.read(); |
---|
| 1272 | r_write_to_init_cmd_d_copies = r_write_d_copies.read(); |
---|
| 1273 | r_write_to_init_cmd_i_copies = r_write_i_copies.read(); |
---|
| 1274 | |
---|
| 1275 | for(size_t i=0; i<m_words ; i++){ |
---|
| 1276 | if(r_write_be[i].read()) r_write_to_init_cmd_we[i]=true; |
---|
| 1277 | else r_write_to_init_cmd_we[i]=false; |
---|
| 1278 | } |
---|
| 1279 | |
---|
| 1280 | size_t min = r_write_word_index.read(); |
---|
| 1281 | size_t max = r_write_word_index.read() + r_write_word_count.read(); |
---|
| 1282 | for (size_t i=min ; i<max ; i++) { |
---|
| 1283 | r_write_to_init_cmd_data[i] = r_write_data[i]; |
---|
| 1284 | } |
---|
| 1285 | r_write_fsm = WRITE_IDLE; // Response will be sent after receiving |
---|
| 1286 | // all update responses |
---|
| 1287 | } |
---|
| 1288 | break; |
---|
| 1289 | } |
---|
| 1290 | /////////////// |
---|
| 1291 | case WRITE_RSP: // send a request to TGT_RSP FSM to acknowledge the write |
---|
| 1292 | { |
---|
| 1293 | if ( !r_write_to_tgt_rsp_req.read() ) { |
---|
| 1294 | r_write_to_tgt_rsp_req = true; |
---|
| 1295 | r_write_to_tgt_rsp_srcid = r_write_srcid.read(); |
---|
| 1296 | r_write_to_tgt_rsp_trdid = r_write_trdid.read(); |
---|
| 1297 | r_write_to_tgt_rsp_pktid = r_write_pktid.read(); |
---|
| 1298 | r_write_fsm = WRITE_IDLE; |
---|
| 1299 | } |
---|
| 1300 | break; |
---|
| 1301 | } |
---|
| 1302 | //////////////////// |
---|
| 1303 | case WRITE_TRT_LOCK: // Miss : check Transaction Table |
---|
| 1304 | { |
---|
| 1305 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) { |
---|
| 1306 | #ifdef IDEBUG |
---|
| 1307 | std::cout << sc_time_stamp() << " " << name() << " READ_TRT_LOCK " << std::endl; |
---|
| 1308 | #endif |
---|
| 1309 | size_t hit_index = 0; |
---|
| 1310 | size_t wok_index = 0; |
---|
| 1311 | bool hit_read = m_transaction_tab.hit_read(m_nline[(vci_addr_t)(r_write_address.read())],hit_index); |
---|
| 1312 | bool hit_write = m_transaction_tab.hit_write(m_nline[(vci_addr_t)(r_write_address.read())]); |
---|
| 1313 | bool wok = !m_transaction_tab.full(wok_index); |
---|
| 1314 | if ( hit_read ) { // register the modified data in TRT |
---|
| 1315 | r_write_trt_index = hit_index; |
---|
| 1316 | r_write_fsm = WRITE_TRT_DATA; |
---|
| 1317 | } else if ( wok && !hit_write ) { // set a new entry in TRT |
---|
| 1318 | r_write_trt_index = wok_index; |
---|
| 1319 | r_write_fsm = WRITE_TRT_SET; |
---|
| 1320 | } else { // wait an empty entry in TRT |
---|
| 1321 | r_write_fsm = WRITE_WAIT_TRT; |
---|
| 1322 | } |
---|
| 1323 | } |
---|
| 1324 | break; |
---|
| 1325 | } |
---|
| 1326 | //////////////////// |
---|
| 1327 | case WRITE_WAIT_TRT: // release the lock protecting TRT |
---|
| 1328 | { |
---|
| 1329 | r_write_fsm = WRITE_DIR_LOCK; |
---|
| 1330 | break; |
---|
| 1331 | } |
---|
| 1332 | /////////////////// |
---|
| 1333 | case WRITE_TRT_SET: // register a new transaction in TRT (Write Buffer) |
---|
| 1334 | { |
---|
| 1335 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) |
---|
| 1336 | { |
---|
| 1337 | std::vector<be_t> be_vector; |
---|
| 1338 | std::vector<data_t> data_vector; |
---|
| 1339 | be_vector.clear(); |
---|
| 1340 | data_vector.clear(); |
---|
| 1341 | for ( size_t i=0; i<m_words; i++ ) |
---|
| 1342 | { |
---|
| 1343 | be_vector.push_back(r_write_be[i]); |
---|
| 1344 | data_vector.push_back(r_write_data[i]); |
---|
| 1345 | } |
---|
| 1346 | m_transaction_tab.set(r_write_trt_index.read(), |
---|
| 1347 | true, // read request to XRAM |
---|
| 1348 | m_nline[(vci_addr_t)(r_write_address.read())], |
---|
| 1349 | r_write_srcid.read(), |
---|
| 1350 | r_write_trdid.read(), |
---|
| 1351 | r_write_pktid.read(), |
---|
| 1352 | false, // not a processor read |
---|
| 1353 | false, // not a single word |
---|
| 1354 | 0, // word index |
---|
| 1355 | be_vector, |
---|
| 1356 | data_vector); |
---|
| 1357 | #ifdef IDEBUG |
---|
| 1358 | std::cout << sc_time_stamp() << " " << name() << " WRITE_TRT_SET transaction table : " << std::endl; |
---|
| 1359 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1360 | m_transaction_tab.print(i); |
---|
| 1361 | #endif |
---|
| 1362 | |
---|
| 1363 | r_write_fsm = WRITE_XRAM_REQ; |
---|
| 1364 | } |
---|
| 1365 | break; |
---|
| 1366 | } |
---|
| 1367 | /////////////////// |
---|
| 1368 | case WRITE_TRT_DATA: // update an entry in TRT (Write Buffer) |
---|
| 1369 | { |
---|
| 1370 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) { |
---|
| 1371 | std::vector<be_t> be_vector; |
---|
| 1372 | std::vector<data_t> data_vector; |
---|
| 1373 | be_vector.clear(); |
---|
| 1374 | data_vector.clear(); |
---|
| 1375 | for ( size_t i=0; i<m_words; i++ ) { |
---|
| 1376 | be_vector.push_back(r_write_be[i]); |
---|
| 1377 | data_vector.push_back(r_write_data[i]); |
---|
| 1378 | } |
---|
| 1379 | m_transaction_tab.write_data_mask(r_write_trt_index.read(), |
---|
| 1380 | be_vector, |
---|
| 1381 | data_vector); |
---|
| 1382 | r_write_fsm = WRITE_RSP; |
---|
| 1383 | #ifdef IDEBUG |
---|
| 1384 | std::cout << sc_time_stamp() << " " << name() << " WRITE_TRT_DATA transaction table : " << std::endl; |
---|
| 1385 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1386 | m_transaction_tab.print(i); |
---|
| 1387 | #endif |
---|
| 1388 | |
---|
| 1389 | } |
---|
| 1390 | break; |
---|
| 1391 | } |
---|
| 1392 | //////////////////// |
---|
| 1393 | case WRITE_XRAM_REQ: // send a request to IXR_CMD FSM |
---|
| 1394 | { |
---|
| 1395 | |
---|
| 1396 | if ( !r_write_to_ixr_cmd_req ) { |
---|
| 1397 | r_write_to_ixr_cmd_req = true; |
---|
| 1398 | r_write_to_ixr_cmd_write = false; |
---|
| 1399 | r_write_to_ixr_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1400 | r_write_to_ixr_cmd_trdid = r_write_trt_index.read(); |
---|
| 1401 | r_write_fsm = WRITE_RSP; |
---|
| 1402 | } |
---|
| 1403 | break; |
---|
| 1404 | } |
---|
| 1405 | //////////////////// |
---|
| 1406 | case WRITE_TRT_WRITE_LOCK: |
---|
| 1407 | { |
---|
| 1408 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) { |
---|
| 1409 | size_t wok_index = 0; |
---|
| 1410 | bool wok = !m_transaction_tab.full(wok_index); |
---|
| 1411 | if ( wok ) { // set a new entry in TRT |
---|
| 1412 | r_write_trt_index = wok_index; |
---|
| 1413 | r_write_fsm = WRITE_INVAL_LOCK; |
---|
| 1414 | } else { // wait an empty entry in TRT |
---|
| 1415 | r_write_fsm = WRITE_WAIT_TRT; |
---|
| 1416 | } |
---|
| 1417 | } |
---|
| 1418 | |
---|
| 1419 | break; |
---|
| 1420 | } |
---|
| 1421 | //////////////////// |
---|
| 1422 | case WRITE_INVAL_LOCK: |
---|
| 1423 | { |
---|
| 1424 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_WRITE ) { |
---|
| 1425 | bool wok = false; |
---|
| 1426 | size_t index = 0; |
---|
| 1427 | size_t srcid = r_write_srcid.read(); |
---|
| 1428 | size_t trdid = r_write_trdid.read(); |
---|
| 1429 | size_t pktid = r_write_pktid.read(); |
---|
| 1430 | addr_t nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1431 | size_t nb_copies = r_write_count.read(); |
---|
| 1432 | |
---|
| 1433 | wok =m_update_tab.set(false, // it's an inval transaction |
---|
| 1434 | true, // it's a broadcast |
---|
| 1435 | true, // it needs a response |
---|
| 1436 | srcid, |
---|
| 1437 | trdid, |
---|
| 1438 | pktid, |
---|
| 1439 | nline, |
---|
| 1440 | nb_copies, |
---|
| 1441 | index); |
---|
| 1442 | #ifdef IDEBUG |
---|
| 1443 | if(wok){ |
---|
| 1444 | std::cout << sc_time_stamp() << " " << name() << " WRITE_INVAL_LOCK update table : " << std::endl; |
---|
| 1445 | m_update_tab.print(); |
---|
| 1446 | } |
---|
| 1447 | #endif |
---|
| 1448 | r_write_upt_index = index; |
---|
| 1449 | // releases the lock protecting Update Table if no entry... |
---|
| 1450 | if ( wok ) r_write_fsm = WRITE_DIR_INVAL; |
---|
| 1451 | else r_write_fsm = WRITE_WAIT_TRT; |
---|
| 1452 | } |
---|
| 1453 | |
---|
| 1454 | break; |
---|
| 1455 | } |
---|
| 1456 | //////////////////// |
---|
| 1457 | case WRITE_DIR_INVAL: |
---|
| 1458 | { |
---|
| 1459 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) || |
---|
| 1460 | (r_alloc_upt_fsm.read() == ALLOC_UPT_WRITE ) ) |
---|
| 1461 | { |
---|
| 1462 | m_transaction_tab.set(r_write_trt_index.read(), |
---|
| 1463 | false, // write request to XRAM |
---|
| 1464 | m_nline[(vci_addr_t)(r_write_address.read())], |
---|
| 1465 | 0, |
---|
| 1466 | 0, |
---|
| 1467 | 0, |
---|
| 1468 | false, // not a processor read |
---|
| 1469 | false, // not a single word |
---|
| 1470 | 0, // word index |
---|
| 1471 | std::vector<be_t>(m_words,0), |
---|
| 1472 | std::vector<data_t>(m_words,0)); |
---|
| 1473 | #ifdef IDEBUG |
---|
| 1474 | std::cout << sc_time_stamp() << " " << name() << " WRITE_DIR_INVAL transaction table : " << std::endl; |
---|
| 1475 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1476 | m_transaction_tab.print(i); |
---|
| 1477 | #endif |
---|
| 1478 | |
---|
| 1479 | // invalidate directory entry |
---|
| 1480 | DirectoryEntry entry; |
---|
| 1481 | entry.valid = false; |
---|
| 1482 | entry.dirty = false; |
---|
| 1483 | entry.tag = 0; |
---|
| 1484 | entry.is_cnt = false; |
---|
| 1485 | entry.lock = false; |
---|
| 1486 | entry.d_copies = 0; |
---|
| 1487 | entry.i_copies = 0; |
---|
| 1488 | entry.count = 0; |
---|
| 1489 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1490 | size_t way = r_write_way.read(); |
---|
| 1491 | m_cache_directory.write(set, way, entry); |
---|
| 1492 | |
---|
| 1493 | r_write_fsm = WRITE_INVAL; |
---|
| 1494 | } else { |
---|
| 1495 | assert(false && "LOCK ERROR in WRITE_FSM, STATE = WRITE_DIR_INVAL"); |
---|
| 1496 | } |
---|
| 1497 | |
---|
| 1498 | break; |
---|
| 1499 | } |
---|
| 1500 | //////////////////// |
---|
| 1501 | case WRITE_INVAL: |
---|
| 1502 | { |
---|
| 1503 | if ( !r_write_to_init_cmd_req ) { |
---|
| 1504 | r_write_to_init_cmd_req = true; |
---|
| 1505 | r_write_to_init_cmd_brdcast = true; |
---|
| 1506 | r_write_to_init_cmd_trdid = r_write_upt_index.read(); |
---|
| 1507 | r_write_to_init_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1508 | r_write_to_init_cmd_index = 0; |
---|
| 1509 | r_write_to_init_cmd_count = 0; |
---|
| 1510 | r_write_to_init_cmd_d_copies = 0; |
---|
| 1511 | r_write_to_init_cmd_i_copies = 0; |
---|
| 1512 | |
---|
| 1513 | for(size_t i=0; i<m_words ; i++){ |
---|
| 1514 | r_write_to_init_cmd_we[i]=false; |
---|
| 1515 | r_write_to_init_cmd_data[i] = 0; |
---|
| 1516 | } |
---|
| 1517 | r_write_fsm = WRITE_XRAM_SEND; |
---|
| 1518 | // all update responses |
---|
| 1519 | } |
---|
| 1520 | |
---|
| 1521 | break; |
---|
| 1522 | } |
---|
| 1523 | //////////////////// |
---|
| 1524 | case WRITE_XRAM_SEND: |
---|
| 1525 | { |
---|
| 1526 | if ( !r_write_to_ixr_cmd_req ) { |
---|
| 1527 | r_write_to_ixr_cmd_req = true; |
---|
| 1528 | r_write_to_ixr_cmd_write = true; |
---|
| 1529 | r_write_to_ixr_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1530 | r_write_to_ixr_cmd_trdid = r_write_trt_index.read(); |
---|
| 1531 | for(size_t i=0; i<m_words; i++){ |
---|
| 1532 | r_write_to_ixr_cmd_data[i] = r_write_data[i]; |
---|
| 1533 | } |
---|
| 1534 | r_write_fsm = WRITE_IDLE; |
---|
| 1535 | } |
---|
| 1536 | break; |
---|
| 1537 | } |
---|
| 1538 | } // end switch r_write_fsm |
---|
| 1539 | |
---|
| 1540 | /////////////////////////////////////////////////////////////////////// |
---|
| 1541 | // IXR_CMD FSM |
---|
| 1542 | /////////////////////////////////////////////////////////////////////// |
---|
| 1543 | // The IXR_CMD fsm controls the command packets to the XRAM : |
---|
| 1544 | // - It sends a single cell VCI read to the XRAM in case of MISS request |
---|
| 1545 | // posted by the READ, WRITE or LLSC FSMs : the TRDID field contains |
---|
| 1546 | // the Transaction Tab index. |
---|
| 1547 | // The VCI response is a multi-cell packet : the N cells contain |
---|
| 1548 | // the N data words. |
---|
| 1549 | // - It sends a multi-cell VCI write when the XRAM_RSP FSM request |
---|
| 1550 | // to save a dirty line to the XRAM. |
---|
| 1551 | // The VCI response is a single cell packet. |
---|
| 1552 | // This FSM handles requests from the READ, WRITE, LLSC & XRAM_RSP FSMs |
---|
| 1553 | // with a round-robin priority. |
---|
| 1554 | //////////////////////////////////////////////////////////////////////// |
---|
| 1555 | |
---|
| 1556 | switch ( r_ixr_cmd_fsm.read() ) { |
---|
| 1557 | //////////////////////// |
---|
| 1558 | case IXR_CMD_READ_IDLE: |
---|
| 1559 | if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
| 1560 | else if ( r_llsc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_LLSC_NLINE; |
---|
| 1561 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
| 1562 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
| 1563 | break; |
---|
| 1564 | //////////////////////// |
---|
| 1565 | case IXR_CMD_WRITE_IDLE: |
---|
| 1566 | if ( r_llsc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_LLSC_NLINE; |
---|
| 1567 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
| 1568 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
| 1569 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
| 1570 | break; |
---|
| 1571 | //////////////////////// |
---|
| 1572 | case IXR_CMD_LLSC_IDLE: |
---|
| 1573 | if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
| 1574 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
| 1575 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
| 1576 | else if ( r_llsc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_LLSC_NLINE; |
---|
| 1577 | break; |
---|
| 1578 | //////////////////////// |
---|
| 1579 | case IXR_CMD_XRAM_IDLE: |
---|
| 1580 | if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
| 1581 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
| 1582 | else if ( r_llsc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_LLSC_NLINE; |
---|
| 1583 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
| 1584 | break; |
---|
| 1585 | ///////////////////////// |
---|
| 1586 | case IXR_CMD_READ_NLINE: |
---|
| 1587 | if ( p_vci_ixr.cmdack ) { |
---|
| 1588 | r_ixr_cmd_fsm = IXR_CMD_READ_IDLE; |
---|
| 1589 | r_read_to_ixr_cmd_req = false; |
---|
| 1590 | } |
---|
| 1591 | break; |
---|
| 1592 | ////////////////////////// |
---|
| 1593 | case IXR_CMD_WRITE_NLINE: |
---|
| 1594 | if ( p_vci_ixr.cmdack ) { |
---|
| 1595 | if( r_write_to_ixr_cmd_write.read()){ |
---|
| 1596 | if ( r_ixr_cmd_cpt.read() == (m_words - 1) ) { |
---|
| 1597 | r_ixr_cmd_cpt = 0; |
---|
| 1598 | r_ixr_cmd_fsm = IXR_CMD_WRITE_IDLE; |
---|
| 1599 | r_write_to_ixr_cmd_req = false; |
---|
| 1600 | } else { |
---|
| 1601 | r_ixr_cmd_cpt = r_ixr_cmd_cpt + 1; |
---|
| 1602 | } |
---|
| 1603 | } else { |
---|
| 1604 | r_ixr_cmd_fsm = IXR_CMD_WRITE_IDLE; |
---|
| 1605 | r_write_to_ixr_cmd_req = false; |
---|
| 1606 | } |
---|
| 1607 | } |
---|
| 1608 | break; |
---|
| 1609 | ///////////////////////// |
---|
| 1610 | case IXR_CMD_LLSC_NLINE: |
---|
| 1611 | if ( p_vci_ixr.cmdack ) { |
---|
| 1612 | r_ixr_cmd_fsm = IXR_CMD_LLSC_IDLE; |
---|
| 1613 | r_llsc_to_ixr_cmd_req = false; |
---|
| 1614 | } |
---|
| 1615 | break; |
---|
| 1616 | //////////////////////// |
---|
| 1617 | case IXR_CMD_XRAM_DATA: |
---|
| 1618 | if ( p_vci_ixr.cmdack ) { |
---|
| 1619 | if ( r_ixr_cmd_cpt.read() == (m_words - 1) ) { |
---|
| 1620 | r_ixr_cmd_cpt = 0; |
---|
| 1621 | r_ixr_cmd_fsm = IXR_CMD_XRAM_IDLE; |
---|
| 1622 | r_xram_rsp_to_ixr_cmd_req = false; |
---|
| 1623 | } else { |
---|
| 1624 | r_ixr_cmd_cpt = r_ixr_cmd_cpt + 1; |
---|
| 1625 | } |
---|
| 1626 | } |
---|
| 1627 | break; |
---|
| 1628 | |
---|
| 1629 | } // end switch r_ixr_cmd_fsm |
---|
| 1630 | |
---|
| 1631 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1632 | // IXR_RSP FSM |
---|
| 1633 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1634 | // The IXR_RSP FSM receives the response packets from the XRAM, |
---|
| 1635 | // for both write transaction, and read transaction. |
---|
| 1636 | // |
---|
| 1637 | // - A response to a write request is a single-cell VCI packet. |
---|
| 1638 | // The Transaction Tab index is contained in the RTRDID field. |
---|
| 1639 | // The FSM takes the lock protecting the TRT, and the corresponding |
---|
| 1640 | // entry is erased. |
---|
| 1641 | // |
---|
| 1642 | // - A response to a read request is a multi-cell VCI packet. |
---|
| 1643 | // The Transaction Tab index is contained in the RTRDID field. |
---|
| 1644 | // The N cells contain the N words of the cache line in the RDATA field. |
---|
| 1645 | // The FSM takes the lock protecting the TRT to store the line in the TRT |
---|
| 1646 | // (taking into account the write requests already stored in the TRT). |
---|
| 1647 | // When the line is completely written, the corresponding rok signal is set. |
---|
| 1648 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 1649 | |
---|
| 1650 | switch ( r_ixr_rsp_fsm.read() ) { |
---|
| 1651 | |
---|
| 1652 | /////////////////// |
---|
| 1653 | case IXR_RSP_IDLE: // test if it's a read or a write transaction |
---|
| 1654 | { |
---|
| 1655 | if ( p_vci_ixr.rspval ) { |
---|
| 1656 | r_ixr_rsp_cpt = 0; |
---|
| 1657 | r_ixr_rsp_trt_index = p_vci_ixr.rtrdid.read(); |
---|
| 1658 | if ( p_vci_ixr.reop ) r_ixr_rsp_fsm = IXR_RSP_ACK; |
---|
| 1659 | else r_ixr_rsp_fsm = IXR_RSP_TRT_READ; |
---|
| 1660 | } |
---|
| 1661 | break; |
---|
| 1662 | } |
---|
| 1663 | //////////////////////// |
---|
| 1664 | case IXR_RSP_ACK: // Acknowledge the vci response |
---|
| 1665 | r_ixr_rsp_fsm = IXR_RSP_TRT_ERASE; |
---|
| 1666 | break; |
---|
| 1667 | //////////////////////// |
---|
| 1668 | case IXR_RSP_TRT_ERASE: // erase the entry in the TRT |
---|
| 1669 | { |
---|
| 1670 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP ) { |
---|
| 1671 | m_transaction_tab.erase(r_ixr_rsp_trt_index.read()); |
---|
| 1672 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
| 1673 | #ifdef IDEBUG |
---|
| 1674 | std::cout << sc_time_stamp() << " " << name() << " IXR_RSP_TRT_ERASE transaction table : " << std::endl; |
---|
| 1675 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1676 | m_transaction_tab.print(i); |
---|
| 1677 | #endif |
---|
| 1678 | |
---|
| 1679 | } |
---|
| 1680 | break; |
---|
| 1681 | } |
---|
| 1682 | /////////////////////// |
---|
| 1683 | case IXR_RSP_TRT_READ: // write data in the TRT |
---|
| 1684 | { |
---|
| 1685 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP) && p_vci_ixr.rspval ) { |
---|
| 1686 | bool eop = p_vci_ixr.reop.read(); |
---|
| 1687 | data_t data = p_vci_ixr.rdata.read(); |
---|
| 1688 | size_t index = r_ixr_rsp_trt_index.read(); |
---|
| 1689 | assert( eop == (r_ixr_rsp_cpt.read() == (m_words-1)) |
---|
| 1690 | && "Error in VCI_MEM_CACHE : invalid length for a response from XRAM"); |
---|
| 1691 | m_transaction_tab.write_rsp(index, r_ixr_rsp_cpt.read(), data); |
---|
| 1692 | r_ixr_rsp_cpt = r_ixr_rsp_cpt.read() + 1; |
---|
| 1693 | if ( eop ) { |
---|
| 1694 | #ifdef IDEBUG |
---|
| 1695 | std::cout << sc_time_stamp() << " " << name() << " IXR_RSP_TRT_READ transaction table : " << std::endl; |
---|
| 1696 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1697 | m_transaction_tab.print(i); |
---|
| 1698 | #endif |
---|
| 1699 | |
---|
| 1700 | r_ixr_rsp_to_xram_rsp_rok[r_ixr_rsp_trt_index.read()]=true; |
---|
| 1701 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
| 1702 | } |
---|
| 1703 | } |
---|
| 1704 | break; |
---|
| 1705 | } |
---|
| 1706 | } // end swich r_ixr_rsp_fsm |
---|
| 1707 | |
---|
| 1708 | |
---|
| 1709 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1710 | // XRAM_RSP FSM |
---|
| 1711 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1712 | // The XRAM_RSP FSM handles the incoming cache lines from the XRAM. |
---|
| 1713 | // The cache line has been written in the TRT buffer by the IXR_FSM. |
---|
| 1714 | // |
---|
| 1715 | // When a response is available, the corresponding TRT entry |
---|
| 1716 | // is copied in a local buffer to be written in the cache. |
---|
| 1717 | // Then, the FSM releases the lock protecting the TRT, and takes the lock |
---|
| 1718 | // protecting the cache directory. |
---|
| 1719 | // It selects a cache slot and writes the line in the cache. |
---|
| 1720 | // If it was a read MISS, the XRAM_RSP FSM send a request to the TGT_RSP |
---|
| 1721 | // FSM to return the cache line to the registered processor. |
---|
| 1722 | // If there is no empty slot, a victim line is evicted, and |
---|
| 1723 | // invalidate requests are sent to the L1 caches containing copies. |
---|
| 1724 | // If this line is dirty, the XRAM_RSP FSM send a request to the IXR_CMD |
---|
| 1725 | // FSM to save the victim line to the XRAM, and register the write transaction |
---|
| 1726 | // in the TRT (using the entry previously used by the read transaction). |
---|
| 1727 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 1728 | |
---|
| 1729 | switch ( r_xram_rsp_fsm.read() ) { |
---|
| 1730 | |
---|
| 1731 | /////////////////// |
---|
| 1732 | case XRAM_RSP_IDLE: // test if there is a response with a round robin priority |
---|
| 1733 | { |
---|
| 1734 | size_t ptr = r_xram_rsp_trt_index.read(); |
---|
| 1735 | size_t lines = TRANSACTION_TAB_LINES; |
---|
| 1736 | for(size_t i=0; i<lines; i++){ |
---|
| 1737 | size_t index=(i+ptr+1)%lines; |
---|
| 1738 | if(r_ixr_rsp_to_xram_rsp_rok[index]){ |
---|
| 1739 | r_xram_rsp_trt_index=index; |
---|
| 1740 | r_ixr_rsp_to_xram_rsp_rok[index]=false; |
---|
| 1741 | r_xram_rsp_fsm = XRAM_RSP_DIR_LOCK; |
---|
| 1742 | break; |
---|
| 1743 | #ifdef IDEBUG |
---|
| 1744 | std::cout << "XRAM_RSP FSM in XRAM_RSP_IDLE state" << std::endl; |
---|
| 1745 | #endif |
---|
| 1746 | } |
---|
| 1747 | } |
---|
| 1748 | break; |
---|
| 1749 | } |
---|
| 1750 | /////////////////////// |
---|
| 1751 | case XRAM_RSP_DIR_LOCK: // Take the lock on the directory |
---|
| 1752 | { |
---|
| 1753 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_XRAM_RSP ) { |
---|
| 1754 | #ifdef VHDL_ACCURATE |
---|
| 1755 | r_xram_rsp_pass = false; |
---|
| 1756 | #endif |
---|
| 1757 | r_xram_rsp_fsm = XRAM_RSP_TRT_COPY; |
---|
| 1758 | #ifdef IDEBUG |
---|
| 1759 | std::cout << "XRAM_RSP FSM in XRAM_RSP_DIR_LOCK state" << std::endl; |
---|
| 1760 | #endif |
---|
| 1761 | } |
---|
| 1762 | break; |
---|
| 1763 | } |
---|
| 1764 | /////////////////////// |
---|
| 1765 | case XRAM_RSP_TRT_COPY: // Copy the TRT entry in the local buffer and eviction of a cache line |
---|
| 1766 | { |
---|
| 1767 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_XRAM_RSP) ) { |
---|
| 1768 | #ifdef VHDL_ACCURATE |
---|
| 1769 | if (!r_xram_rsp_pass.read()){ |
---|
| 1770 | #endif |
---|
| 1771 | size_t index = r_xram_rsp_trt_index.read(); |
---|
| 1772 | TransactionTabEntry trt_entry(m_transaction_tab.read(index)); |
---|
| 1773 | |
---|
| 1774 | r_xram_rsp_trt_buf.copy(trt_entry); // TRT entry local buffer |
---|
| 1775 | |
---|
| 1776 | // selects & extracts a victim line from cache |
---|
| 1777 | size_t way = 0; |
---|
| 1778 | size_t set = m_y[(vci_addr_t)(trt_entry.nline * m_words * 4)]; |
---|
| 1779 | DirectoryEntry victim(m_cache_directory.select(set, way)); |
---|
| 1780 | |
---|
| 1781 | for (size_t i=0 ; i<m_words ; i++) r_xram_rsp_victim_data[i] = m_cache_data[way][set][i]; |
---|
| 1782 | |
---|
| 1783 | bool inval = (victim.count && victim.valid) ; |
---|
| 1784 | |
---|
| 1785 | r_xram_rsp_victim_d_copies = victim.d_copies; |
---|
| 1786 | r_xram_rsp_victim_i_copies = victim.i_copies; |
---|
| 1787 | r_xram_rsp_victim_count = victim.count; |
---|
| 1788 | r_xram_rsp_victim_way = way; |
---|
| 1789 | r_xram_rsp_victim_set = set; |
---|
| 1790 | r_xram_rsp_victim_nline = victim.tag*m_sets + set; |
---|
| 1791 | r_xram_rsp_victim_is_cnt = victim.is_cnt; |
---|
| 1792 | r_xram_rsp_victim_inval = inval ; |
---|
| 1793 | r_xram_rsp_victim_dirty = victim.dirty; |
---|
| 1794 | |
---|
| 1795 | #ifdef VHDL_ACCURATE |
---|
| 1796 | r_xram_rsp_fsm = XRAM_RSP_TRT_COPY; |
---|
| 1797 | #else |
---|
| 1798 | r_xram_rsp_fsm = XRAM_RSP_INVAL_LOCK; |
---|
| 1799 | #endif |
---|
| 1800 | #ifdef IDEBUG |
---|
| 1801 | std::cout << "XRAM_RSP FSM in XRAM_RSP_TRT_COPY state" << std::endl; |
---|
| 1802 | std::cout << "Victim way : " << std::hex << way << " set " << std::hex << set << std::endl; |
---|
| 1803 | victim.print(); |
---|
| 1804 | #endif |
---|
| 1805 | #ifdef VHDL_ACCURATE |
---|
| 1806 | r_xram_rsp_pass = true; |
---|
| 1807 | }else{ |
---|
| 1808 | r_xram_rsp_pass = false; |
---|
| 1809 | r_xram_rsp_fsm = XRAM_RSP_INVAL_LOCK; |
---|
| 1810 | } |
---|
| 1811 | #endif |
---|
| 1812 | } |
---|
| 1813 | break; |
---|
| 1814 | } |
---|
| 1815 | /////////////////////// |
---|
| 1816 | case XRAM_RSP_INVAL_LOCK: |
---|
| 1817 | { |
---|
| 1818 | if ( r_alloc_upt_fsm == ALLOC_UPT_XRAM_RSP ) { |
---|
| 1819 | #ifdef IDEBUG |
---|
| 1820 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_LOCK state" << std::endl; |
---|
| 1821 | #endif |
---|
| 1822 | size_t index; |
---|
| 1823 | if(m_update_tab.search_inval(r_xram_rsp_trt_buf.nline, index)){ |
---|
| 1824 | r_xram_rsp_fsm = XRAM_RSP_INVAL_WAIT; |
---|
| 1825 | #ifdef IDEBUG |
---|
| 1826 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_LOCK state to XRAM_RSP_INVAL_WAIT state" << std::endl; |
---|
| 1827 | #endif |
---|
| 1828 | |
---|
| 1829 | } |
---|
| 1830 | else if(m_update_tab.is_full() && r_xram_rsp_victim_inval.read()){ |
---|
| 1831 | r_xram_rsp_fsm = XRAM_RSP_INVAL_WAIT; |
---|
| 1832 | #ifdef IDEBUG |
---|
| 1833 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_LOCK state to XRAM_RSP_INVAL_WAIT state" << std::endl; |
---|
| 1834 | #endif |
---|
| 1835 | } |
---|
| 1836 | else { |
---|
| 1837 | r_xram_rsp_fsm = XRAM_RSP_DIR_UPDT; |
---|
| 1838 | #ifdef IDEBUG |
---|
| 1839 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_LOCK state to XRAM_RSP_DIR_UPDT state" << std::endl; |
---|
| 1840 | #endif |
---|
| 1841 | } |
---|
| 1842 | } |
---|
| 1843 | break; |
---|
| 1844 | } |
---|
| 1845 | /////////////////////// |
---|
| 1846 | case XRAM_RSP_INVAL_WAIT: |
---|
| 1847 | { |
---|
| 1848 | r_xram_rsp_fsm = XRAM_RSP_DIR_LOCK; |
---|
| 1849 | break; |
---|
| 1850 | #ifdef IDEBUG |
---|
| 1851 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_WAIT state" << std::endl; |
---|
| 1852 | #endif |
---|
| 1853 | } |
---|
| 1854 | /////////////////////// |
---|
| 1855 | case XRAM_RSP_DIR_UPDT: // updates the cache (both data & directory) |
---|
| 1856 | { |
---|
| 1857 | // signals generation |
---|
| 1858 | bool inst_read = (r_xram_rsp_trt_buf.trdid & 0x2) && r_xram_rsp_trt_buf.proc_read; // It is an instruction read |
---|
| 1859 | bool cached_read = (r_xram_rsp_trt_buf.trdid & 0x1) && r_xram_rsp_trt_buf.proc_read ; |
---|
| 1860 | // update data |
---|
| 1861 | size_t set = r_xram_rsp_victim_set.read(); |
---|
| 1862 | size_t way = r_xram_rsp_victim_way.read(); |
---|
| 1863 | for(size_t i=0; i<m_words ; i++){ |
---|
| 1864 | m_cache_data[way][set][i] = r_xram_rsp_trt_buf.wdata[i]; |
---|
| 1865 | } |
---|
| 1866 | // compute dirty |
---|
| 1867 | bool dirty = false; |
---|
| 1868 | for(size_t i=0; i<m_words;i++){ |
---|
| 1869 | dirty = dirty || (r_xram_rsp_trt_buf.wdata_be[i] != 0); |
---|
| 1870 | } |
---|
| 1871 | |
---|
| 1872 | // update directory |
---|
| 1873 | DirectoryEntry entry; |
---|
| 1874 | entry.valid = true; |
---|
| 1875 | entry.is_cnt = false; |
---|
| 1876 | entry.lock = false; |
---|
| 1877 | entry.dirty = dirty; |
---|
| 1878 | entry.tag = r_xram_rsp_trt_buf.nline / m_sets; |
---|
| 1879 | if(cached_read) { |
---|
| 1880 | if(inst_read) { |
---|
| 1881 | entry.i_copies = 0x1 << r_xram_rsp_trt_buf.srcid; |
---|
| 1882 | entry.d_copies = 0x0; |
---|
| 1883 | entry.count = 1; |
---|
| 1884 | } else { |
---|
| 1885 | entry.i_copies = 0x0; |
---|
| 1886 | entry.d_copies = 0x1 << r_xram_rsp_trt_buf.srcid; |
---|
| 1887 | entry.count = 1; |
---|
| 1888 | } |
---|
| 1889 | } else { |
---|
| 1890 | entry.d_copies = 0; |
---|
| 1891 | entry.i_copies = 0; |
---|
| 1892 | entry.count = 0; |
---|
| 1893 | } |
---|
| 1894 | m_cache_directory.write(set, way, entry); |
---|
| 1895 | #ifdef IDEBUG |
---|
| 1896 | std::cout << "printing the entry : " << std::endl; |
---|
| 1897 | entry.print(); |
---|
| 1898 | std::cout << "done" << std::endl; |
---|
| 1899 | #endif |
---|
| 1900 | |
---|
| 1901 | #ifdef IDEBUG |
---|
| 1902 | std::cout << sc_time_stamp() << " " << name() << " XRAM_RSP_DIR_UPDT transaction table : " << std::endl; |
---|
| 1903 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1904 | m_transaction_tab.print(i); |
---|
| 1905 | #endif |
---|
| 1906 | |
---|
| 1907 | if(r_xram_rsp_victim_inval.read()){ |
---|
| 1908 | bool brdcast = r_xram_rsp_victim_is_cnt.read(); |
---|
| 1909 | size_t index; |
---|
| 1910 | size_t count_copies = r_xram_rsp_victim_count.read(); |
---|
| 1911 | |
---|
| 1912 | bool wok = m_update_tab.set(false, // it's an inval transaction |
---|
| 1913 | brdcast, // set brdcast bit |
---|
| 1914 | false, // it does not need a response |
---|
| 1915 | 0, |
---|
| 1916 | 0, |
---|
| 1917 | 0, |
---|
| 1918 | r_xram_rsp_victim_nline.read(), |
---|
| 1919 | count_copies, |
---|
| 1920 | index); |
---|
| 1921 | |
---|
| 1922 | #ifdef IDEBUG |
---|
| 1923 | std::cout << "xram_rsp : record invalidation, time = " << std::dec << m_cpt_cycles << std::endl; |
---|
| 1924 | m_update_tab.print(); |
---|
| 1925 | #endif |
---|
| 1926 | r_xram_rsp_upt_index = index; |
---|
| 1927 | if(!wok) { |
---|
| 1928 | assert(false && "mem_cache error : xram_rsp_dir_upt, an update_tab entry was free but write unsuccessful"); |
---|
| 1929 | } |
---|
| 1930 | } |
---|
| 1931 | // If the victim is not dirty, we erase the entry in the TRT |
---|
| 1932 | if (!r_xram_rsp_victim_dirty.read()){ |
---|
| 1933 | m_transaction_tab.erase(r_xram_rsp_trt_index.read()); |
---|
| 1934 | |
---|
| 1935 | } |
---|
| 1936 | // Next state |
---|
| 1937 | if ( r_xram_rsp_victim_dirty.read()) r_xram_rsp_fsm = XRAM_RSP_TRT_DIRTY; |
---|
| 1938 | else if ( r_xram_rsp_trt_buf.proc_read ) r_xram_rsp_fsm = XRAM_RSP_DIR_RSP; |
---|
| 1939 | else if ( r_xram_rsp_victim_inval.read()) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
| 1940 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 1941 | break; |
---|
| 1942 | } |
---|
| 1943 | //////////////////////// |
---|
| 1944 | case XRAM_RSP_TRT_DIRTY: // set the TRT entry (write line to XRAM) if the victim is dirty |
---|
| 1945 | { |
---|
| 1946 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_XRAM_RSP ) { |
---|
| 1947 | m_transaction_tab.set(r_xram_rsp_trt_index.read(), |
---|
| 1948 | false, // write to XRAM |
---|
| 1949 | r_xram_rsp_victim_nline.read(), // line index |
---|
| 1950 | 0, |
---|
| 1951 | 0, |
---|
| 1952 | 0, |
---|
| 1953 | false, |
---|
| 1954 | false, |
---|
| 1955 | 0, |
---|
| 1956 | std::vector<be_t>(m_words,0), |
---|
| 1957 | std::vector<data_t>(m_words,0) ); |
---|
| 1958 | #ifdef IDEBUG |
---|
| 1959 | std::cout << sc_time_stamp() << " " << name() << " XRAM_RSP_TRT_DIRTY transaction table : " << std::endl; |
---|
| 1960 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1961 | m_transaction_tab.print(i); |
---|
| 1962 | #endif |
---|
| 1963 | |
---|
| 1964 | if ( r_xram_rsp_trt_buf.proc_read ) r_xram_rsp_fsm = XRAM_RSP_DIR_RSP; |
---|
| 1965 | else if ( r_xram_rsp_victim_inval.read()) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
| 1966 | else r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
| 1967 | } |
---|
| 1968 | break; |
---|
| 1969 | } |
---|
| 1970 | ////////////////////// |
---|
| 1971 | case XRAM_RSP_DIR_RSP: // send a request to TGT_RSP FSM in case of read |
---|
| 1972 | { |
---|
| 1973 | if ( !r_xram_rsp_to_tgt_rsp_req ) { |
---|
| 1974 | r_xram_rsp_to_tgt_rsp_srcid = r_xram_rsp_trt_buf.srcid; |
---|
| 1975 | r_xram_rsp_to_tgt_rsp_trdid = r_xram_rsp_trt_buf.trdid; |
---|
| 1976 | r_xram_rsp_to_tgt_rsp_pktid = r_xram_rsp_trt_buf.pktid; |
---|
| 1977 | for (size_t i=0; i < m_words; i++) { |
---|
| 1978 | r_xram_rsp_to_tgt_rsp_data[i] = r_xram_rsp_trt_buf.wdata[i]; |
---|
| 1979 | if( r_xram_rsp_trt_buf.single_word ) { |
---|
| 1980 | r_xram_rsp_to_tgt_rsp_val[i] = (r_xram_rsp_trt_buf.word_index == i); |
---|
| 1981 | } else { |
---|
| 1982 | r_xram_rsp_to_tgt_rsp_val[i] = true; |
---|
| 1983 | } |
---|
| 1984 | } |
---|
| 1985 | r_xram_rsp_to_tgt_rsp_req = true; |
---|
| 1986 | |
---|
| 1987 | if ( r_xram_rsp_victim_inval ) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
| 1988 | else if ( r_xram_rsp_victim_dirty ) r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
| 1989 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 1990 | |
---|
| 1991 | #ifdef IDEBUG |
---|
| 1992 | std::cout << "XRAM_RSP FSM in XRAM_RSP_DIR_RSP state" << std::endl; |
---|
| 1993 | #endif |
---|
| 1994 | } |
---|
| 1995 | break; |
---|
| 1996 | } |
---|
| 1997 | //////////////////// |
---|
| 1998 | case XRAM_RSP_INVAL: // send invalidate request to INIT_CMD FSM |
---|
| 1999 | { |
---|
| 2000 | if( !r_xram_rsp_to_init_cmd_req ) { |
---|
| 2001 | r_xram_rsp_to_init_cmd_req = true; |
---|
| 2002 | r_xram_rsp_to_init_cmd_brdcast = r_xram_rsp_victim_is_cnt.read(); |
---|
| 2003 | r_xram_rsp_to_init_cmd_nline = r_xram_rsp_victim_nline.read(); |
---|
| 2004 | r_xram_rsp_to_init_cmd_trdid = r_xram_rsp_upt_index; |
---|
| 2005 | r_xram_rsp_to_init_cmd_d_copies = r_xram_rsp_victim_d_copies ; |
---|
| 2006 | r_xram_rsp_to_init_cmd_i_copies = r_xram_rsp_victim_i_copies ; |
---|
| 2007 | if ( r_xram_rsp_victim_dirty ) r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
| 2008 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 2009 | #ifdef IDEBUG |
---|
| 2010 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL state" << std::endl; |
---|
| 2011 | #endif |
---|
| 2012 | } |
---|
| 2013 | break; |
---|
| 2014 | } |
---|
| 2015 | ////////////////////////// |
---|
| 2016 | case XRAM_RSP_WRITE_DIRTY: // send a write request to IXR_CMD FSM |
---|
| 2017 | { |
---|
| 2018 | if ( !r_xram_rsp_to_ixr_cmd_req ) { |
---|
| 2019 | r_xram_rsp_to_ixr_cmd_req = true; |
---|
| 2020 | r_xram_rsp_to_ixr_cmd_nline = r_xram_rsp_victim_nline.read(); |
---|
| 2021 | r_xram_rsp_to_ixr_cmd_trdid = r_xram_rsp_trt_index.read(); |
---|
| 2022 | for(size_t i=0; i<m_words ; i++) { |
---|
| 2023 | r_xram_rsp_to_ixr_cmd_data[i] = r_xram_rsp_victim_data[i]; |
---|
| 2024 | } |
---|
| 2025 | m_cpt_write_dirty++; |
---|
| 2026 | r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 2027 | #ifdef IDEBUG |
---|
| 2028 | std::cout << "XRAM_RSP FSM in XRAM_RSP_WRITE_DIRTY state" << std::endl; |
---|
| 2029 | #endif |
---|
| 2030 | } |
---|
| 2031 | break; |
---|
| 2032 | } |
---|
| 2033 | } // end swich r_xram_rsp_fsm |
---|
| 2034 | |
---|
| 2035 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2036 | // CLEANUP FSM |
---|
| 2037 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2038 | // The CLEANUP FSM handles the cleanup request from L1 caches. |
---|
| 2039 | // It accesses the cache directory to update the list of copies. |
---|
| 2040 | // |
---|
| 2041 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2042 | switch ( r_cleanup_fsm.read() ) { |
---|
| 2043 | |
---|
| 2044 | /////////////////// |
---|
| 2045 | case CLEANUP_IDLE: |
---|
| 2046 | { |
---|
| 2047 | |
---|
| 2048 | if ( p_vci_tgt_cleanup.cmdval.read() ) { |
---|
| 2049 | assert( (p_vci_tgt_cleanup.srcid.read() < m_initiators) && |
---|
| 2050 | "VCI_MEM_CACHE error in VCI_MEM_CACHE in the CLEANUP network : The received SRCID is larger than 31"); |
---|
| 2051 | bool reached = false; |
---|
| 2052 | for ( size_t index = 0 ; index < ncseg && !reached ; index++ ){ |
---|
| 2053 | if ( m_cseg[index]->contains((addr_t)(p_vci_tgt_cleanup.address.read())) ){ |
---|
| 2054 | reached = true; |
---|
| 2055 | } |
---|
| 2056 | } |
---|
| 2057 | if ( (p_vci_tgt_cleanup.cmd.read() == vci_param::CMD_WRITE) && |
---|
| 2058 | (((addr_t)(p_vci_tgt_cleanup.address.read())) != BROADCAST_ADDR) && |
---|
| 2059 | reached) { |
---|
| 2060 | |
---|
| 2061 | m_cpt_cleanup++; |
---|
| 2062 | |
---|
| 2063 | r_cleanup_nline = (addr_t)(m_nline[(vci_addr_t)(p_vci_tgt_cleanup.address.read())]) ; |
---|
| 2064 | r_cleanup_srcid = p_vci_tgt_cleanup.srcid.read(); |
---|
| 2065 | r_cleanup_trdid = p_vci_tgt_cleanup.trdid.read(); |
---|
| 2066 | r_cleanup_pktid = p_vci_tgt_cleanup.pktid.read(); |
---|
| 2067 | |
---|
| 2068 | #ifdef VHDL_ACCURATE |
---|
| 2069 | r_cleanup_pass = false; |
---|
| 2070 | #endif |
---|
| 2071 | r_cleanup_fsm = CLEANUP_DIR_LOCK; |
---|
| 2072 | } |
---|
| 2073 | } |
---|
| 2074 | break; |
---|
| 2075 | } |
---|
| 2076 | ////////////////////// |
---|
| 2077 | case CLEANUP_DIR_LOCK: |
---|
| 2078 | { |
---|
| 2079 | if ( r_alloc_dir_fsm.read() == ALLOC_DIR_CLEANUP ) { |
---|
| 2080 | #ifdef VHDL_ACCURATE |
---|
| 2081 | if (!r_cleanup_pass.read()){ |
---|
| 2082 | #endif |
---|
| 2083 | // Read the directory |
---|
| 2084 | size_t way = 0; |
---|
| 2085 | addr_t cleanup_address = r_cleanup_nline.read() * m_words * 4; |
---|
| 2086 | DirectoryEntry entry = m_cache_directory.read(cleanup_address , way); |
---|
| 2087 | #ifdef IDEBUG |
---|
| 2088 | std::cout << "In CLEANUP_DIR_LOCK printing the entry of address is : " << std::hex << cleanup_address << std::endl; |
---|
| 2089 | entry.print(); |
---|
| 2090 | std::cout << "done" << std::endl; |
---|
| 2091 | #endif |
---|
| 2092 | r_cleanup_is_cnt = entry.is_cnt; |
---|
| 2093 | r_cleanup_dirty = entry.dirty; |
---|
| 2094 | r_cleanup_tag = entry.tag; |
---|
| 2095 | r_cleanup_lock = entry.lock; |
---|
| 2096 | r_cleanup_way = way; |
---|
| 2097 | r_cleanup_d_copies = entry.d_copies; |
---|
| 2098 | r_cleanup_i_copies = entry.i_copies; |
---|
| 2099 | r_cleanup_count = entry.count; |
---|
| 2100 | |
---|
| 2101 | // In case of hit, the copy must be cleaned in the copies bit-vector |
---|
| 2102 | if( entry.valid ) { |
---|
| 2103 | r_cleanup_fsm = CLEANUP_DIR_LOCK; |
---|
| 2104 | } else { |
---|
| 2105 | r_cleanup_fsm = CLEANUP_UPT_LOCK; |
---|
| 2106 | } |
---|
| 2107 | #ifdef VHDL_ACCURATE |
---|
| 2108 | r_cleanup_pass = true; |
---|
| 2109 | }else{ |
---|
| 2110 | r_cleanup_pass = false; |
---|
| 2111 | r_cleanup_fsm = CLEANUP_DIR_WRITE; |
---|
| 2112 | } |
---|
| 2113 | #endif |
---|
| 2114 | } |
---|
| 2115 | break; |
---|
| 2116 | } |
---|
| 2117 | /////////////////////// |
---|
| 2118 | case CLEANUP_DIR_WRITE: |
---|
| 2119 | { |
---|
| 2120 | size_t way = r_cleanup_way.read(); |
---|
| 2121 | #define L2 soclib::common::uint32_log2 |
---|
| 2122 | size_t set = m_y[(vci_addr_t)(r_cleanup_nline.read() << (L2(m_words) +2))]; |
---|
| 2123 | #undef L2 |
---|
| 2124 | bool cleanup_inst = r_cleanup_trdid.read() & 0x1; |
---|
| 2125 | |
---|
| 2126 | // update the cache directory (for the copies) |
---|
| 2127 | DirectoryEntry entry; |
---|
| 2128 | entry.valid = true; |
---|
| 2129 | entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
| 2130 | entry.dirty = r_cleanup_dirty.read(); |
---|
| 2131 | entry.tag = r_cleanup_tag.read(); |
---|
| 2132 | entry.lock = r_cleanup_lock.read(); |
---|
| 2133 | if(r_cleanup_is_cnt.read()) { // Directory is a counter |
---|
| 2134 | entry.count = r_cleanup_count.read() -1; |
---|
| 2135 | entry.i_copies = 0; |
---|
| 2136 | entry.d_copies = 0; |
---|
| 2137 | // response to the cache |
---|
| 2138 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2139 | } |
---|
| 2140 | else{ // Directory is a vector |
---|
| 2141 | if(cleanup_inst){ // Cleanup from a ICACHE |
---|
| 2142 | if(r_cleanup_i_copies.read() & (0x1 << r_cleanup_srcid.read())){ // hit |
---|
| 2143 | entry.count = r_cleanup_count.read() -1; |
---|
| 2144 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2145 | } else { // miss |
---|
| 2146 | assert(false && "MemCache ERROR : Cleanup instruction hit but the line is not shared"); |
---|
| 2147 | } |
---|
| 2148 | entry.i_copies = r_cleanup_i_copies.read() & ~(0x1 << r_cleanup_srcid.read()); |
---|
| 2149 | entry.d_copies = r_cleanup_d_copies.read(); |
---|
| 2150 | } else { // Cleanup from a DCACHE |
---|
| 2151 | if(r_cleanup_d_copies.read() & (0x1 << r_cleanup_srcid.read())){ // hit |
---|
| 2152 | entry.count = r_cleanup_count.read() -1; |
---|
| 2153 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2154 | } else { // miss |
---|
| 2155 | assert(false && "MemCache ERROR : Cleanup data hit but the line is not shared"); |
---|
| 2156 | } |
---|
| 2157 | entry.i_copies = r_cleanup_i_copies.read(); |
---|
| 2158 | entry.d_copies = r_cleanup_d_copies.read() & ~(0x1 << r_cleanup_srcid.read()); |
---|
| 2159 | } |
---|
| 2160 | } |
---|
| 2161 | m_cache_directory.write(set, way, entry); |
---|
| 2162 | |
---|
| 2163 | break; |
---|
| 2164 | } |
---|
| 2165 | ///////////////// |
---|
| 2166 | case CLEANUP_UPT_LOCK: |
---|
| 2167 | { |
---|
| 2168 | if( r_alloc_upt_fsm.read() == ALLOC_UPT_CLEANUP ) |
---|
| 2169 | { |
---|
| 2170 | size_t index=0; |
---|
| 2171 | bool hit_inval; |
---|
| 2172 | hit_inval = m_update_tab.search_inval(r_cleanup_nline.read(),index); |
---|
| 2173 | if(!hit_inval) { |
---|
| 2174 | #ifdef DEBUG_VCI_MEM_CACHE |
---|
| 2175 | std::cout << "MEM_CACHE WARNING: cleanup with no corresponding entry at address : " << std::hex << (r_cleanup_nline.read()*4*m_words) << std::dec << std::endl; |
---|
| 2176 | #endif |
---|
| 2177 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2178 | } else { |
---|
| 2179 | r_cleanup_write_srcid = m_update_tab.srcid(index); |
---|
| 2180 | r_cleanup_write_trdid = m_update_tab.trdid(index); |
---|
| 2181 | r_cleanup_write_pktid = m_update_tab.pktid(index); |
---|
| 2182 | r_cleanup_need_rsp = m_update_tab.need_rsp(index); |
---|
| 2183 | r_cleanup_fsm = CLEANUP_UPT_WRITE; |
---|
| 2184 | } |
---|
| 2185 | r_cleanup_index.write(index) ; |
---|
| 2186 | } |
---|
| 2187 | break; |
---|
| 2188 | } |
---|
| 2189 | ///////////////// |
---|
| 2190 | case CLEANUP_UPT_WRITE: |
---|
| 2191 | { |
---|
| 2192 | size_t count = 0; |
---|
| 2193 | m_update_tab.decrement(r_cleanup_index.read(), count); // &count |
---|
| 2194 | if(count == 0){ |
---|
| 2195 | m_update_tab.clear(r_cleanup_index.read()); |
---|
| 2196 | #ifdef IDEBUG |
---|
| 2197 | std::cout << sc_time_stamp() << " " << name() << " CLEANUP_UPT_WRITE update table : " << std::endl; |
---|
| 2198 | m_update_tab.print(); |
---|
| 2199 | #endif |
---|
| 2200 | |
---|
| 2201 | if(r_cleanup_need_rsp.read()){ |
---|
| 2202 | r_cleanup_fsm = CLEANUP_WRITE_RSP ; |
---|
| 2203 | } else { |
---|
| 2204 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2205 | } |
---|
| 2206 | } else { |
---|
| 2207 | r_cleanup_fsm = CLEANUP_RSP ; |
---|
| 2208 | } |
---|
| 2209 | break; |
---|
| 2210 | } |
---|
| 2211 | ///////////////// |
---|
| 2212 | case CLEANUP_WRITE_RSP: |
---|
| 2213 | { |
---|
| 2214 | if( !r_cleanup_to_tgt_rsp_req.read()) { |
---|
| 2215 | r_cleanup_to_tgt_rsp_req = true; |
---|
| 2216 | r_cleanup_to_tgt_rsp_srcid = r_cleanup_write_srcid.read(); |
---|
| 2217 | r_cleanup_to_tgt_rsp_trdid = r_cleanup_write_trdid.read(); |
---|
| 2218 | r_cleanup_to_tgt_rsp_pktid = r_cleanup_write_pktid.read(); |
---|
| 2219 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2220 | } |
---|
| 2221 | break; |
---|
| 2222 | } |
---|
| 2223 | ///////////////// |
---|
| 2224 | case CLEANUP_RSP: |
---|
| 2225 | { |
---|
| 2226 | if(p_vci_tgt_cleanup.rspack) |
---|
| 2227 | r_cleanup_fsm = CLEANUP_IDLE; |
---|
| 2228 | break; |
---|
| 2229 | } |
---|
| 2230 | } // end switch cleanup fsm |
---|
| 2231 | |
---|
| 2232 | |
---|
| 2233 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2234 | // LLSC FSM |
---|
| 2235 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2236 | // The LLSC FSM handles the LL & SC atomic access. |
---|
| 2237 | // |
---|
| 2238 | // For a LL : |
---|
| 2239 | // It access the directory to check hit / miss. |
---|
| 2240 | // - In case of hit, the LL request is registered in the Atomic Table and the |
---|
| 2241 | // response is sent to the requesting processor. |
---|
| 2242 | // - In case of miss, the LLSC FSM accesses the transaction table. |
---|
| 2243 | // If a read transaction to the XRAM for this line already exists, |
---|
| 2244 | // or if the transaction table is full, it returns to IDLE state. |
---|
| 2245 | // Otherwise, a new transaction to the XRAM is initiated. |
---|
| 2246 | // In both cases, the LL request is not consumed in the FIFO. |
---|
| 2247 | // |
---|
| 2248 | // For a SC : |
---|
| 2249 | // It access the directory to check hit / miss. |
---|
| 2250 | // - In case of hit, the Atomic Table is checked and the proper response |
---|
| 2251 | // (true or false is sent to the requesting processor. |
---|
| 2252 | // - In case of miss, the LLSC FSM accesses the transaction table. |
---|
| 2253 | // If a read transaction to the XRAM for this line already exists, |
---|
| 2254 | // or if the transaction table is full, it returns to IDLE state. |
---|
| 2255 | // Otherwise, a new transaction to the XRAM is initiated. |
---|
| 2256 | // In both cases, the SC request is not consumed in the FIFO. |
---|
| 2257 | ///////////////////////////////////////////////////////////////////// |
---|
| 2258 | |
---|
| 2259 | switch ( r_llsc_fsm.read() ) { |
---|
| 2260 | |
---|
| 2261 | /////////////// |
---|
| 2262 | case LLSC_IDLE: // test LL / SC |
---|
| 2263 | { |
---|
| 2264 | if( m_cmd_llsc_addr_fifo.rok() ) { |
---|
| 2265 | #ifdef VHDL_ACCURATE |
---|
| 2266 | r_llsc_pass = false; |
---|
| 2267 | #endif |
---|
| 2268 | if(m_cmd_llsc_sc_fifo.read()){ |
---|
| 2269 | m_cpt_sc++; |
---|
| 2270 | r_llsc_fsm = SC_DIR_LOCK; |
---|
| 2271 | } |
---|
| 2272 | else{ |
---|
| 2273 | m_cpt_ll++; |
---|
| 2274 | r_llsc_fsm = LL_DIR_LOCK; |
---|
| 2275 | } |
---|
| 2276 | } |
---|
| 2277 | break; |
---|
| 2278 | } |
---|
| 2279 | ///////////////// |
---|
| 2280 | case LL_DIR_LOCK: // check directory for hit / miss |
---|
| 2281 | { |
---|
| 2282 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_LLSC ) { |
---|
| 2283 | #ifdef VHDL_ACCURATE |
---|
| 2284 | if (!r_llsc_pass.read()){ |
---|
| 2285 | #endif |
---|
| 2286 | size_t way = 0; |
---|
| 2287 | DirectoryEntry entry(m_cache_directory.read(m_cmd_llsc_addr_fifo.read(), way)); |
---|
| 2288 | r_llsc_is_cnt = entry.is_cnt; |
---|
| 2289 | r_llsc_dirty = entry.dirty; |
---|
| 2290 | r_llsc_tag = entry.tag; |
---|
| 2291 | r_llsc_way = way; |
---|
| 2292 | r_llsc_d_copies = entry.d_copies; |
---|
| 2293 | r_llsc_i_copies = entry.i_copies ; |
---|
| 2294 | r_llsc_count = entry.count ; |
---|
| 2295 | |
---|
| 2296 | if ( entry.valid ) r_llsc_fsm = LL_DIR_LOCK; |
---|
| 2297 | else r_llsc_fsm = LLSC_TRT_LOCK; |
---|
| 2298 | #ifdef VHDL_ACCURATE |
---|
| 2299 | r_llsc_pass = true; |
---|
| 2300 | }else{ |
---|
| 2301 | r_llsc_pass = false; |
---|
| 2302 | r_llsc_fsm = LL_DIR_HIT; |
---|
| 2303 | } |
---|
| 2304 | #endif |
---|
| 2305 | } |
---|
| 2306 | break; |
---|
| 2307 | } |
---|
| 2308 | //////////////// |
---|
| 2309 | case LL_DIR_HIT: // read hit : update the memory cache |
---|
| 2310 | { |
---|
| 2311 | size_t way = r_llsc_way.read(); |
---|
| 2312 | size_t set = m_y[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2313 | size_t word = m_x[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2314 | |
---|
| 2315 | // update directory (lock bit & copies) |
---|
| 2316 | DirectoryEntry entry; |
---|
| 2317 | entry.valid = true; |
---|
| 2318 | entry.is_cnt = r_llsc_is_cnt.read(); |
---|
| 2319 | entry.dirty = r_llsc_dirty.read(); |
---|
| 2320 | entry.lock = true; |
---|
| 2321 | entry.tag = r_llsc_tag.read(); |
---|
| 2322 | entry.d_copies = r_llsc_d_copies.read(); |
---|
| 2323 | entry.i_copies = r_llsc_i_copies.read(); |
---|
| 2324 | entry.count = r_llsc_count.read(); |
---|
| 2325 | m_cache_directory.write(set, way, entry); |
---|
| 2326 | |
---|
| 2327 | // read data in cache |
---|
| 2328 | r_llsc_data = m_cache_data[way][set][word]; |
---|
| 2329 | |
---|
| 2330 | // set Atomic Table |
---|
| 2331 | m_atomic_tab.set(m_cmd_llsc_srcid_fifo.read(), m_cmd_llsc_addr_fifo.read()); |
---|
| 2332 | |
---|
| 2333 | r_llsc_fsm = LL_RSP; |
---|
| 2334 | break; |
---|
| 2335 | } |
---|
| 2336 | //////////// |
---|
| 2337 | case LL_RSP: // request the TGT_RSP FSM to return data |
---|
| 2338 | { |
---|
| 2339 | if ( !r_llsc_to_tgt_rsp_req ) { |
---|
| 2340 | cmd_llsc_fifo_get = true; |
---|
| 2341 | r_llsc_to_tgt_rsp_data = r_llsc_data.read(); |
---|
| 2342 | r_llsc_to_tgt_rsp_srcid = m_cmd_llsc_srcid_fifo.read(); |
---|
| 2343 | r_llsc_to_tgt_rsp_trdid = m_cmd_llsc_trdid_fifo.read(); |
---|
| 2344 | r_llsc_to_tgt_rsp_pktid = m_cmd_llsc_pktid_fifo.read(); |
---|
| 2345 | r_llsc_to_tgt_rsp_req = true; |
---|
| 2346 | r_llsc_fsm = LLSC_IDLE; |
---|
| 2347 | } |
---|
| 2348 | break; |
---|
| 2349 | } |
---|
| 2350 | ///////////////// |
---|
| 2351 | case SC_DIR_LOCK: |
---|
| 2352 | { |
---|
| 2353 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_LLSC ) { |
---|
| 2354 | #ifdef VHDL_ACCURATE |
---|
| 2355 | if(!r_llsc_pass.read()){ |
---|
| 2356 | #endif |
---|
| 2357 | size_t way = 0; |
---|
| 2358 | DirectoryEntry entry(m_cache_directory.read(m_cmd_llsc_addr_fifo.read(), way)); |
---|
| 2359 | bool ok = m_atomic_tab.isatomic(m_cmd_llsc_srcid_fifo.read(),m_cmd_llsc_addr_fifo.read()); |
---|
| 2360 | if( ok ) { |
---|
| 2361 | r_llsc_is_cnt = entry.is_cnt; |
---|
| 2362 | r_llsc_dirty = entry.dirty; |
---|
| 2363 | r_llsc_tag = entry.tag; |
---|
| 2364 | r_llsc_way = way; |
---|
| 2365 | r_llsc_d_copies = entry.d_copies; |
---|
| 2366 | r_llsc_i_copies = entry.i_copies; |
---|
| 2367 | r_llsc_count = entry.count; |
---|
[32] | 2368 | /* to avoid livelock, force the atomic access to fail (pseudo-)randomly */ |
---|
| 2369 | bool fail = (r_llsc_lfsr % (64) == 0); |
---|
| 2370 | r_llsc_lfsr = (r_llsc_lfsr >> 1) ^ ((-(r_llsc_lfsr & 1)) & 0xd0000001); |
---|
| 2371 | #ifdef RANDOMIZE_SC |
---|
| 2372 | if(fail){ |
---|
| 2373 | #else |
---|
| 2374 | if(0){ |
---|
| 2375 | #endif |
---|
| 2376 | r_llsc_fsm = SC_RSP_FALSE; |
---|
| 2377 | } else { |
---|
| 2378 | if ( entry.valid ) r_llsc_fsm = SC_DIR_LOCK; |
---|
| 2379 | else r_llsc_fsm = LLSC_TRT_LOCK; |
---|
| 2380 | } |
---|
[2] | 2381 | } else { |
---|
| 2382 | r_llsc_fsm = SC_RSP_FALSE; |
---|
| 2383 | } |
---|
| 2384 | #ifdef VHDL_ACCURATE |
---|
| 2385 | r_llsc_pass = true; |
---|
| 2386 | }else{ |
---|
| 2387 | r_llsc_pass = false; |
---|
| 2388 | r_llsc_fsm = SC_DIR_HIT; |
---|
| 2389 | } |
---|
| 2390 | #endif |
---|
| 2391 | } |
---|
| 2392 | break; |
---|
| 2393 | } |
---|
| 2394 | //////////////// |
---|
| 2395 | case SC_DIR_HIT: |
---|
| 2396 | { |
---|
| 2397 | size_t way = r_llsc_way.read(); |
---|
| 2398 | size_t set = m_y[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2399 | size_t word = m_x[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2400 | |
---|
| 2401 | // update directory (lock & dirty bits |
---|
| 2402 | DirectoryEntry entry; |
---|
| 2403 | entry.valid = true; |
---|
| 2404 | entry.is_cnt = r_llsc_is_cnt.read(); |
---|
| 2405 | entry.dirty = true; |
---|
| 2406 | entry.lock = true; |
---|
| 2407 | entry.tag = r_llsc_tag.read(); |
---|
| 2408 | entry.d_copies = r_llsc_d_copies.read(); |
---|
| 2409 | entry.i_copies = r_llsc_i_copies.read(); |
---|
| 2410 | entry.count = r_llsc_count.read(); |
---|
| 2411 | m_cache_directory.write(set, way, entry); |
---|
| 2412 | |
---|
| 2413 | // write data in cache |
---|
| 2414 | m_cache_data[way][set][word] = m_cmd_llsc_wdata_fifo.read(); |
---|
| 2415 | |
---|
| 2416 | // reset Atomic Table |
---|
| 2417 | m_atomic_tab.reset(m_cmd_llsc_addr_fifo.read()); |
---|
| 2418 | |
---|
| 2419 | r_llsc_fsm = SC_RSP_TRUE; |
---|
| 2420 | break; |
---|
| 2421 | } |
---|
| 2422 | ////////////////// |
---|
| 2423 | case SC_RSP_FALSE: |
---|
| 2424 | { |
---|
| 2425 | if( !r_llsc_to_tgt_rsp_req ) { |
---|
| 2426 | cmd_llsc_fifo_get = true; |
---|
| 2427 | r_llsc_to_tgt_rsp_req = true; |
---|
| 2428 | r_llsc_to_tgt_rsp_data = 1; |
---|
| 2429 | r_llsc_to_tgt_rsp_srcid = m_cmd_llsc_srcid_fifo.read(); |
---|
| 2430 | r_llsc_to_tgt_rsp_trdid = m_cmd_llsc_trdid_fifo.read(); |
---|
| 2431 | r_llsc_to_tgt_rsp_pktid = m_cmd_llsc_pktid_fifo.read(); |
---|
| 2432 | r_llsc_fsm = LLSC_IDLE; |
---|
| 2433 | } |
---|
| 2434 | break; |
---|
| 2435 | } |
---|
| 2436 | ///////////////// |
---|
| 2437 | case SC_RSP_TRUE: |
---|
| 2438 | { |
---|
| 2439 | if( !r_llsc_to_tgt_rsp_req ) { |
---|
| 2440 | cmd_llsc_fifo_get = true; |
---|
| 2441 | r_llsc_to_tgt_rsp_req = true; |
---|
| 2442 | r_llsc_to_tgt_rsp_data = 0; |
---|
| 2443 | r_llsc_to_tgt_rsp_srcid = m_cmd_llsc_srcid_fifo.read(); |
---|
| 2444 | r_llsc_to_tgt_rsp_trdid = m_cmd_llsc_trdid_fifo.read(); |
---|
| 2445 | r_llsc_to_tgt_rsp_pktid = m_cmd_llsc_pktid_fifo.read(); |
---|
| 2446 | r_llsc_fsm = LLSC_IDLE; |
---|
| 2447 | } |
---|
| 2448 | break; |
---|
| 2449 | } |
---|
| 2450 | /////////////////// |
---|
| 2451 | case LLSC_TRT_LOCK: // read or write miss : check the Transaction Table |
---|
| 2452 | { |
---|
| 2453 | if( r_alloc_trt_fsm.read() == ALLOC_TRT_LLSC ) { |
---|
| 2454 | size_t index = 0; |
---|
| 2455 | bool hit_read = m_transaction_tab.hit_read(m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()],index); |
---|
| 2456 | bool hit_write = m_transaction_tab.hit_write(m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()]); |
---|
| 2457 | bool wok = !m_transaction_tab.full(index); |
---|
| 2458 | |
---|
| 2459 | if ( hit_read || !wok || hit_write ) { // missing line already requested or no space in TRT |
---|
| 2460 | r_llsc_fsm = LLSC_IDLE; |
---|
| 2461 | } else { |
---|
| 2462 | r_llsc_trt_index = index; |
---|
| 2463 | r_llsc_fsm = LLSC_TRT_SET; |
---|
| 2464 | } |
---|
| 2465 | } |
---|
| 2466 | break; |
---|
| 2467 | } |
---|
| 2468 | ////////////////// |
---|
| 2469 | case LLSC_TRT_SET: // register the XRAM transaction in Transaction Table |
---|
| 2470 | { |
---|
| 2471 | if( r_alloc_trt_fsm.read() == ALLOC_TRT_LLSC ) { |
---|
| 2472 | bool proc_read = !m_cmd_llsc_sc_fifo.read(); |
---|
| 2473 | if(proc_read){ |
---|
| 2474 | m_transaction_tab.set(r_llsc_trt_index.read(), |
---|
| 2475 | true, |
---|
| 2476 | m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()], |
---|
| 2477 | m_cmd_llsc_srcid_fifo.read(), |
---|
| 2478 | m_cmd_llsc_trdid_fifo.read(), |
---|
| 2479 | m_cmd_llsc_pktid_fifo.read(), |
---|
| 2480 | true, |
---|
| 2481 | true, |
---|
| 2482 | m_x[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())], |
---|
| 2483 | std::vector<be_t>(m_words,0), |
---|
| 2484 | std::vector<data_t>(m_words,0)); |
---|
| 2485 | }else{ |
---|
| 2486 | m_transaction_tab.set(r_llsc_trt_index.read(), |
---|
| 2487 | true, |
---|
| 2488 | m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()], |
---|
| 2489 | m_cmd_llsc_srcid_fifo.read(), |
---|
| 2490 | m_cmd_llsc_trdid_fifo.read(), |
---|
| 2491 | m_cmd_llsc_pktid_fifo.read(), |
---|
| 2492 | false, |
---|
| 2493 | false, |
---|
| 2494 | 0, |
---|
| 2495 | std::vector<be_t>(m_words,0), |
---|
| 2496 | std::vector<data_t>(m_words,0)); |
---|
| 2497 | } |
---|
| 2498 | #ifdef IDEBUG |
---|
| 2499 | std::cout << sc_time_stamp() << " " << name() << " LLSC_TRT_SET transaction table : " << std::endl; |
---|
| 2500 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 2501 | m_transaction_tab.print(i); |
---|
| 2502 | #endif |
---|
| 2503 | |
---|
| 2504 | r_llsc_fsm = LLSC_XRAM_REQ; |
---|
| 2505 | } |
---|
| 2506 | break; |
---|
| 2507 | } |
---|
| 2508 | /////////////////// |
---|
| 2509 | case LLSC_XRAM_REQ: // request the IXR_CMD FSM to fetch the missing line |
---|
| 2510 | { |
---|
| 2511 | if ( !r_llsc_to_ixr_cmd_req ) { |
---|
| 2512 | r_llsc_to_ixr_cmd_req = true; |
---|
| 2513 | r_llsc_to_ixr_cmd_trdid = r_llsc_trt_index.read(); |
---|
| 2514 | r_llsc_to_ixr_cmd_nline = m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()]; |
---|
| 2515 | if( m_cmd_llsc_sc_fifo.read() ) { |
---|
| 2516 | r_llsc_fsm = SC_RSP_FALSE; |
---|
| 2517 | } else { |
---|
| 2518 | cmd_llsc_fifo_get = true; |
---|
| 2519 | r_llsc_fsm = LLSC_IDLE; |
---|
| 2520 | } |
---|
| 2521 | } |
---|
| 2522 | break; |
---|
| 2523 | } |
---|
| 2524 | } // end switch r_llsc_fsm |
---|
| 2525 | |
---|
| 2526 | |
---|
| 2527 | ////////////////////////////////////////////////////////////////////////////// |
---|
| 2528 | // INIT_CMD FSM |
---|
| 2529 | ////////////////////////////////////////////////////////////////////////////// |
---|
| 2530 | // The INIT_CMD fsm controls the VCI CMD initiator port, used to update |
---|
| 2531 | // or invalidate cache lines in L1 caches. |
---|
| 2532 | // It implements a round-robin priority between the two following requests: |
---|
| 2533 | // - r_write_to_init_cmd_req : update request from WRITE FSM |
---|
| 2534 | // - r_xram_rsp_to_init_cmd_req : invalidate request from XRAM_RSP FSM |
---|
| 2535 | // The inval request is a single cell VCI write command containing the |
---|
| 2536 | // index of the line to be invalidated. |
---|
| 2537 | // The update request is a multi-cells VCI write command : The first cell |
---|
| 2538 | // contains the index of the cache line to be updated. The second cell contains |
---|
| 2539 | // the index of the first modified word in the line. The following cells |
---|
| 2540 | // contain the data. |
---|
| 2541 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 2542 | |
---|
| 2543 | switch ( r_init_cmd_fsm.read() ) { |
---|
| 2544 | |
---|
| 2545 | //////////////////////// |
---|
| 2546 | case INIT_CMD_UPDT_IDLE: // Invalidate requests have highest priority |
---|
| 2547 | { |
---|
| 2548 | |
---|
| 2549 | if ( r_xram_rsp_to_init_cmd_req.read() ) { |
---|
| 2550 | r_init_cmd_fsm = INIT_CMD_INVAL_SEL; |
---|
| 2551 | m_cpt_inval++; |
---|
| 2552 | } else if ( r_write_to_init_cmd_req.read() ) { |
---|
| 2553 | if(r_write_to_init_cmd_brdcast.read()){ |
---|
| 2554 | r_init_cmd_fsm = INIT_CMD_BRDCAST; |
---|
| 2555 | m_cpt_inval++; |
---|
| 2556 | m_cpt_inval_brdcast++; |
---|
| 2557 | } else { |
---|
| 2558 | r_init_cmd_fsm = INIT_CMD_UPDT_SEL; |
---|
| 2559 | m_cpt_update++; |
---|
| 2560 | } |
---|
| 2561 | } |
---|
| 2562 | break; |
---|
| 2563 | } |
---|
| 2564 | ///////////////////////// |
---|
| 2565 | case INIT_CMD_INVAL_IDLE: // Update requests have highest priority |
---|
| 2566 | { |
---|
| 2567 | if ( r_write_to_init_cmd_req.read() ) { |
---|
| 2568 | if(r_write_to_init_cmd_brdcast.read()){ |
---|
| 2569 | r_init_cmd_fsm = INIT_CMD_BRDCAST; |
---|
| 2570 | m_cpt_inval++; |
---|
| 2571 | m_cpt_inval_brdcast++; |
---|
| 2572 | } else { |
---|
| 2573 | r_init_cmd_fsm = INIT_CMD_UPDT_SEL; |
---|
| 2574 | m_cpt_update++; |
---|
| 2575 | } |
---|
| 2576 | } else if ( r_xram_rsp_to_init_cmd_req.read() ) { |
---|
| 2577 | r_init_cmd_fsm = INIT_CMD_INVAL_SEL; |
---|
| 2578 | m_cpt_inval++; |
---|
| 2579 | } |
---|
| 2580 | break; |
---|
| 2581 | } |
---|
| 2582 | //////////////////////// |
---|
| 2583 | case INIT_CMD_INVAL_SEL: // selects L1 caches |
---|
| 2584 | { |
---|
| 2585 | if(r_xram_rsp_to_init_cmd_brdcast.read()){ |
---|
| 2586 | m_cpt_inval_brdcast++; |
---|
| 2587 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
| 2588 | break; |
---|
| 2589 | } |
---|
| 2590 | if ((r_xram_rsp_to_init_cmd_d_copies.read() == 0) && |
---|
| 2591 | (r_xram_rsp_to_init_cmd_i_copies.read() == 0)) { // no more copies |
---|
| 2592 | r_xram_rsp_to_init_cmd_req = false; |
---|
| 2593 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
| 2594 | break; |
---|
| 2595 | } |
---|
| 2596 | m_cpt_inval_mult++; |
---|
| 2597 | copy_t copies; |
---|
| 2598 | bool inst = false; |
---|
| 2599 | if(r_xram_rsp_to_init_cmd_i_copies.read()){ |
---|
| 2600 | copies = r_xram_rsp_to_init_cmd_i_copies.read(); |
---|
| 2601 | inst = true; |
---|
| 2602 | } else { |
---|
| 2603 | copies = r_xram_rsp_to_init_cmd_d_copies.read(); |
---|
| 2604 | } |
---|
| 2605 | copy_t mask = 0x1; |
---|
| 2606 | for ( size_t i=0 ; i<8*sizeof(copy_t) ; i++ ) { |
---|
| 2607 | if ( copies & mask ) { |
---|
| 2608 | r_init_cmd_target = i; |
---|
| 2609 | break; |
---|
| 2610 | } |
---|
| 2611 | mask = mask << 1; |
---|
| 2612 | } // end for |
---|
| 2613 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
| 2614 | r_init_cmd_inst = inst; |
---|
| 2615 | if(inst){ |
---|
| 2616 | r_xram_rsp_to_init_cmd_i_copies = copies & ~mask; |
---|
| 2617 | } else { |
---|
| 2618 | r_xram_rsp_to_init_cmd_d_copies = copies & ~mask; |
---|
| 2619 | } |
---|
| 2620 | break; |
---|
| 2621 | } |
---|
| 2622 | //////////////////////// |
---|
| 2623 | case INIT_CMD_INVAL_NLINE: // send the cache line index |
---|
| 2624 | { |
---|
| 2625 | if ( p_vci_ini.cmdack ) { |
---|
| 2626 | if ( r_xram_rsp_to_init_cmd_brdcast.read() ) { |
---|
| 2627 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
| 2628 | r_xram_rsp_to_init_cmd_req = false; |
---|
| 2629 | } |
---|
| 2630 | else r_init_cmd_fsm = INIT_CMD_INVAL_SEL; |
---|
| 2631 | } |
---|
| 2632 | break; |
---|
| 2633 | } |
---|
| 2634 | /////////////////////// |
---|
| 2635 | case INIT_CMD_UPDT_SEL: // selects the next L1 cache |
---|
| 2636 | { |
---|
| 2637 | if ((r_write_to_init_cmd_i_copies.read() == 0) && |
---|
| 2638 | (r_write_to_init_cmd_d_copies.read() == 0)) { // no more copies |
---|
| 2639 | r_write_to_init_cmd_req = false; |
---|
| 2640 | r_init_cmd_fsm = INIT_CMD_UPDT_IDLE; |
---|
| 2641 | } else { // select the first target |
---|
| 2642 | copy_t copies; |
---|
| 2643 | bool inst = false; |
---|
| 2644 | if(r_write_to_init_cmd_i_copies.read()){ |
---|
| 2645 | inst = true; |
---|
| 2646 | copies = r_write_to_init_cmd_i_copies.read(); |
---|
| 2647 | } else { |
---|
| 2648 | copies = r_write_to_init_cmd_d_copies.read(); |
---|
| 2649 | } |
---|
| 2650 | copy_t mask = 0x1; |
---|
| 2651 | for ( size_t i=0 ; i<8*sizeof(copy_t) ; i++ ) { |
---|
| 2652 | if ( copies & mask ) { |
---|
| 2653 | r_init_cmd_target = i; |
---|
| 2654 | break; |
---|
| 2655 | } |
---|
| 2656 | mask = mask << 1; |
---|
| 2657 | } // end for |
---|
| 2658 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
| 2659 | r_init_cmd_inst = inst; |
---|
| 2660 | if(inst){ |
---|
| 2661 | r_write_to_init_cmd_i_copies = copies & ~mask; |
---|
| 2662 | } else { |
---|
| 2663 | r_write_to_init_cmd_d_copies = copies & ~mask; |
---|
| 2664 | } |
---|
| 2665 | r_init_cmd_cpt = 0; |
---|
| 2666 | m_cpt_update_mult++; |
---|
| 2667 | } |
---|
| 2668 | break; |
---|
| 2669 | } |
---|
| 2670 | ///////////////////////// |
---|
| 2671 | case INIT_CMD_BRDCAST: |
---|
| 2672 | { |
---|
| 2673 | if( p_vci_ini.cmdack ) { |
---|
| 2674 | r_write_to_init_cmd_req = false; |
---|
| 2675 | r_init_cmd_fsm = INIT_CMD_UPDT_IDLE; |
---|
| 2676 | } |
---|
| 2677 | break; |
---|
| 2678 | } |
---|
| 2679 | ///////////////////////// |
---|
| 2680 | case INIT_CMD_UPDT_NLINE: // send the cache line index |
---|
| 2681 | { |
---|
| 2682 | if ( p_vci_ini.cmdack ){ |
---|
| 2683 | r_init_cmd_fsm = INIT_CMD_UPDT_INDEX; |
---|
| 2684 | } |
---|
| 2685 | break; |
---|
| 2686 | } |
---|
| 2687 | ///////////////////////// |
---|
| 2688 | case INIT_CMD_UPDT_INDEX: // send the first word index |
---|
| 2689 | { |
---|
| 2690 | |
---|
| 2691 | if ( p_vci_ini.cmdack ) r_init_cmd_fsm = INIT_CMD_UPDT_DATA; |
---|
| 2692 | break; |
---|
| 2693 | } |
---|
| 2694 | //////////////////////// |
---|
| 2695 | case INIT_CMD_UPDT_DATA: // send the data |
---|
| 2696 | { |
---|
| 2697 | if ( p_vci_ini.cmdack ) { |
---|
| 2698 | if ( r_init_cmd_cpt.read() == (r_write_to_init_cmd_count.read()-1) ) { |
---|
| 2699 | r_init_cmd_fsm = INIT_CMD_UPDT_SEL; |
---|
| 2700 | } else { |
---|
| 2701 | r_init_cmd_cpt = r_init_cmd_cpt.read() + 1; |
---|
| 2702 | } |
---|
| 2703 | } |
---|
| 2704 | break; |
---|
| 2705 | } |
---|
| 2706 | } // end switch r_init_cmd_fsm |
---|
| 2707 | |
---|
| 2708 | ///////////////////////////////////////////////////////////////////// |
---|
| 2709 | // TGT_RSP FSM |
---|
| 2710 | ///////////////////////////////////////////////////////////////////// |
---|
| 2711 | // The TGT_RSP fsm sends the responses on the VCI target port |
---|
| 2712 | // with a round robin priority between six requests : |
---|
| 2713 | // - r_read_to_tgt_rsp_req |
---|
| 2714 | // - r_write_to_tgt_rsp_req |
---|
| 2715 | // - r_llsc_to_tgt_rsp_req |
---|
| 2716 | // - r_cleanup_to_tgt_rsp_req |
---|
| 2717 | // - r_init_rsp_to_tgt_rsp_req |
---|
| 2718 | // - r_xram_rsp_to_tgt_rsp_req |
---|
| 2719 | // The ordering is : read > write > llsc > cleanup > xram > init |
---|
| 2720 | ///////////////////////////////////////////////////////////////////// |
---|
| 2721 | |
---|
| 2722 | switch ( r_tgt_rsp_fsm.read() ) { |
---|
| 2723 | |
---|
| 2724 | /////////////////////// |
---|
| 2725 | case TGT_RSP_READ_IDLE: // write requests have the highest priority |
---|
| 2726 | { |
---|
| 2727 | |
---|
| 2728 | if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 2729 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 2730 | else if ( r_xram_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_XRAM_TEST; |
---|
| 2731 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 2732 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 2733 | else if ( r_read_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_READ_TEST; |
---|
| 2734 | break; |
---|
| 2735 | } |
---|
| 2736 | //////////////////////// |
---|
| 2737 | case TGT_RSP_WRITE_IDLE: // llsc requests have the highest priority |
---|
| 2738 | { |
---|
| 2739 | |
---|
| 2740 | if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 2741 | else if ( r_xram_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_XRAM_TEST; |
---|
| 2742 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 2743 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 2744 | else if ( r_read_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_READ_TEST; |
---|
| 2745 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 2746 | break; |
---|
| 2747 | } |
---|
| 2748 | /////////////////////// |
---|
| 2749 | case TGT_RSP_LLSC_IDLE: // cleanup requests have the highest priority |
---|
| 2750 | { |
---|
| 2751 | |
---|
| 2752 | if ( r_xram_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_XRAM_TEST; |
---|
| 2753 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 2754 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 2755 | else if ( r_read_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_READ_TEST; |
---|
| 2756 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 2757 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 2758 | break; |
---|
| 2759 | } |
---|
| 2760 | case TGT_RSP_XRAM_IDLE: // init requests have the highest priority |
---|
| 2761 | { |
---|
| 2762 | |
---|
| 2763 | if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 2764 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 2765 | else if ( r_read_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_READ_TEST; |
---|
| 2766 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 2767 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 2768 | else if ( r_xram_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_XRAM_TEST; |
---|
| 2769 | break; |
---|
| 2770 | } |
---|
| 2771 | /////////////////////// |
---|
| 2772 | case TGT_RSP_INIT_IDLE: // cleanup requests have the highest priority |
---|
| 2773 | { |
---|
| 2774 | if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 2775 | else if ( r_read_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_READ_TEST; |
---|
| 2776 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 2777 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 2778 | else if ( r_xram_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_XRAM_TEST; |
---|
| 2779 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 2780 | break; |
---|
| 2781 | } |
---|
| 2782 | /////////////////////// |
---|
| 2783 | case TGT_RSP_CLEANUP_IDLE: // read requests have the highest priority |
---|
| 2784 | { |
---|
| 2785 | if ( r_read_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_READ_TEST; |
---|
| 2786 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 2787 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 2788 | else if ( r_xram_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_XRAM_TEST; |
---|
| 2789 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 2790 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 2791 | break; |
---|
| 2792 | } |
---|
| 2793 | /////////////////////// |
---|
| 2794 | case TGT_RSP_READ_TEST: // test if word or cache line |
---|
| 2795 | { |
---|
| 2796 | bool line = true; |
---|
| 2797 | size_t index; |
---|
| 2798 | for ( size_t i=0; i< m_words ; i++ ) { |
---|
| 2799 | line = line && r_read_to_tgt_rsp_val[i]; |
---|
| 2800 | if ( r_read_to_tgt_rsp_val[i] ) index = i; |
---|
| 2801 | } |
---|
| 2802 | if ( line ) { |
---|
| 2803 | r_tgt_rsp_cpt = 0; |
---|
| 2804 | r_tgt_rsp_fsm = TGT_RSP_READ_LINE; |
---|
| 2805 | } else { |
---|
| 2806 | r_tgt_rsp_cpt = index; |
---|
| 2807 | r_tgt_rsp_fsm = TGT_RSP_READ_WORD; |
---|
| 2808 | } |
---|
| 2809 | break; |
---|
| 2810 | } |
---|
| 2811 | /////////////////////// |
---|
| 2812 | case TGT_RSP_READ_WORD: // send one word response |
---|
| 2813 | { |
---|
| 2814 | if ( p_vci_tgt.rspack ) { |
---|
| 2815 | r_tgt_rsp_fsm = TGT_RSP_READ_IDLE; |
---|
| 2816 | r_read_to_tgt_rsp_req = false; |
---|
| 2817 | } |
---|
| 2818 | break; |
---|
| 2819 | } |
---|
| 2820 | /////////////////////// |
---|
| 2821 | case TGT_RSP_READ_LINE: // send one complete cache line |
---|
| 2822 | { |
---|
| 2823 | if ( p_vci_tgt.rspack ) { |
---|
| 2824 | if ( r_tgt_rsp_cpt.read() == (m_words-1) ) { |
---|
| 2825 | r_tgt_rsp_fsm = TGT_RSP_READ_IDLE; |
---|
| 2826 | r_read_to_tgt_rsp_req = false; |
---|
| 2827 | } else { |
---|
| 2828 | r_tgt_rsp_cpt = r_tgt_rsp_cpt.read() + 1; |
---|
| 2829 | } |
---|
| 2830 | } |
---|
| 2831 | break; |
---|
| 2832 | } |
---|
| 2833 | /////////////////// |
---|
| 2834 | case TGT_RSP_WRITE: // send the write acknowledge |
---|
| 2835 | { |
---|
| 2836 | if ( p_vci_tgt.rspack ) { |
---|
| 2837 | r_tgt_rsp_fsm = TGT_RSP_WRITE_IDLE; |
---|
| 2838 | r_write_to_tgt_rsp_req = false; |
---|
| 2839 | } |
---|
| 2840 | break; |
---|
| 2841 | } |
---|
| 2842 | /////////////////// |
---|
| 2843 | case TGT_RSP_CLEANUP: // send the write acknowledge |
---|
| 2844 | { |
---|
| 2845 | if ( p_vci_tgt.rspack ) { |
---|
| 2846 | r_tgt_rsp_fsm = TGT_RSP_CLEANUP_IDLE; |
---|
| 2847 | r_cleanup_to_tgt_rsp_req = false; |
---|
| 2848 | } |
---|
| 2849 | break; |
---|
| 2850 | } |
---|
| 2851 | ////////////////// |
---|
| 2852 | case TGT_RSP_LLSC: // send one atomic word response |
---|
| 2853 | { |
---|
| 2854 | if ( p_vci_tgt.rspack ) { |
---|
| 2855 | r_tgt_rsp_fsm = TGT_RSP_LLSC_IDLE; |
---|
| 2856 | r_llsc_to_tgt_rsp_req = false; |
---|
| 2857 | } |
---|
| 2858 | break; |
---|
| 2859 | } |
---|
| 2860 | |
---|
| 2861 | case TGT_RSP_XRAM_TEST: // test if word or cache line |
---|
| 2862 | { |
---|
| 2863 | bool line = true; |
---|
| 2864 | size_t index; |
---|
| 2865 | for ( size_t i=0; i< m_words ; i++ ) { |
---|
| 2866 | line = line && r_xram_rsp_to_tgt_rsp_val[i]; |
---|
| 2867 | if ( r_xram_rsp_to_tgt_rsp_val[i] ) index = i; |
---|
| 2868 | } |
---|
| 2869 | if ( line ) { |
---|
| 2870 | r_tgt_rsp_cpt = 0; |
---|
| 2871 | r_tgt_rsp_fsm = TGT_RSP_XRAM_LINE; |
---|
| 2872 | } else { |
---|
| 2873 | r_tgt_rsp_cpt = index; |
---|
| 2874 | r_tgt_rsp_fsm = TGT_RSP_XRAM_WORD; |
---|
| 2875 | } |
---|
| 2876 | break; |
---|
| 2877 | } |
---|
| 2878 | /////////////////////// |
---|
| 2879 | case TGT_RSP_XRAM_WORD: // send one word response |
---|
| 2880 | { |
---|
| 2881 | if ( p_vci_tgt.rspack ) { |
---|
| 2882 | r_tgt_rsp_fsm = TGT_RSP_XRAM_IDLE; |
---|
| 2883 | r_xram_rsp_to_tgt_rsp_req = false; |
---|
| 2884 | } |
---|
| 2885 | break; |
---|
| 2886 | } |
---|
| 2887 | /////////////////////// |
---|
| 2888 | case TGT_RSP_XRAM_LINE: // send one complete cache line |
---|
| 2889 | { |
---|
| 2890 | if ( p_vci_tgt.rspack ) { |
---|
| 2891 | if ( r_tgt_rsp_cpt.read() == (m_words-1) ) { |
---|
| 2892 | r_tgt_rsp_fsm = TGT_RSP_XRAM_IDLE; |
---|
| 2893 | r_xram_rsp_to_tgt_rsp_req = false; |
---|
| 2894 | } else { |
---|
| 2895 | r_tgt_rsp_cpt = r_tgt_rsp_cpt.read() + 1; |
---|
| 2896 | } |
---|
| 2897 | } |
---|
| 2898 | break; |
---|
| 2899 | } |
---|
| 2900 | /////////////////// |
---|
| 2901 | case TGT_RSP_INIT: // send the pending write acknowledge |
---|
| 2902 | { |
---|
| 2903 | if ( p_vci_tgt.rspack ) { |
---|
| 2904 | r_tgt_rsp_fsm = TGT_RSP_INIT_IDLE; |
---|
| 2905 | r_init_rsp_to_tgt_rsp_req = false; |
---|
| 2906 | } |
---|
| 2907 | break; |
---|
| 2908 | } |
---|
| 2909 | } // end switch tgt_rsp_fsm |
---|
| 2910 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2911 | // NEW ALLOC_UPT FSM |
---|
| 2912 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2913 | // The ALLOC_UPT FSM allocates the access to the Update/Inval Table (UPT). |
---|
| 2914 | // with a round robin priority between three FSMs : INIT_RSP > WRITE > XRAM_RSP > CLEANUP |
---|
| 2915 | // - The WRITE FSM initiates update transactions and sets new entry in UPT. |
---|
| 2916 | // - The XRAM_RSP FSM initiates inval transactions and sets new entry in UPT. |
---|
| 2917 | // - The INIT_RSP FSM complete those trasactions and erase the UPT entry. |
---|
| 2918 | // - The CLEANUP FSM decrement an entry in UPT. |
---|
| 2919 | // The resource is always allocated. |
---|
| 2920 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 2921 | |
---|
| 2922 | switch ( r_alloc_upt_fsm.read() ) { |
---|
| 2923 | |
---|
| 2924 | //////////////////////// |
---|
| 2925 | case ALLOC_UPT_INIT_RSP: |
---|
| 2926 | if ( (r_init_rsp_fsm.read() != INIT_RSP_UPT_LOCK) && |
---|
| 2927 | (r_init_rsp_fsm.read() != INIT_RSP_UPT_CLEAR) ) |
---|
| 2928 | { |
---|
| 2929 | if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
| 2930 | (r_write_fsm.read() == WRITE_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 2931 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
| 2932 | else if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
| 2933 | } |
---|
| 2934 | break; |
---|
| 2935 | |
---|
| 2936 | ///////////////////// |
---|
| 2937 | case ALLOC_UPT_WRITE: |
---|
| 2938 | if ( (r_write_fsm.read() != WRITE_UPT_LOCK) && |
---|
| 2939 | (r_write_fsm.read() != WRITE_INVAL_LOCK)) |
---|
| 2940 | { |
---|
| 2941 | if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
| 2942 | else if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
| 2943 | else if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
| 2944 | } |
---|
| 2945 | break; |
---|
| 2946 | |
---|
| 2947 | //////////////////////// |
---|
| 2948 | case ALLOC_UPT_XRAM_RSP: |
---|
| 2949 | if (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK) |
---|
| 2950 | { |
---|
| 2951 | if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
| 2952 | else if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
| 2953 | else if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
| 2954 | (r_write_fsm.read() == WRITE_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 2955 | } |
---|
| 2956 | break; |
---|
| 2957 | |
---|
| 2958 | ////////////////////////// |
---|
| 2959 | case ALLOC_UPT_CLEANUP: |
---|
| 2960 | if(r_cleanup_fsm.read() != CLEANUP_UPT_LOCK) |
---|
| 2961 | { |
---|
| 2962 | if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
| 2963 | else if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
| 2964 | (r_write_fsm.read() == WRITE_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 2965 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
| 2966 | } |
---|
| 2967 | break; |
---|
| 2968 | |
---|
| 2969 | } // end switch r_alloc_upt_fsm |
---|
| 2970 | |
---|
| 2971 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2972 | // ALLOC_DIR FSM |
---|
| 2973 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2974 | // The ALLOC_DIR FSM allocates the access to the directory and |
---|
| 2975 | // the data cache with a round robin priority between 5 user FSMs : |
---|
| 2976 | // The cyclic ordering is READ > WRITE > LLSC > CLEANUP > XRAM_RSP |
---|
| 2977 | // The ressource is always allocated. |
---|
| 2978 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 2979 | |
---|
| 2980 | switch ( r_alloc_dir_fsm.read() ) { |
---|
| 2981 | |
---|
| 2982 | //////////////////// |
---|
| 2983 | case ALLOC_DIR_READ: |
---|
| 2984 | if ( ( (r_read_fsm.read() != READ_DIR_LOCK) && |
---|
| 2985 | (r_read_fsm.read() != READ_TRT_LOCK) ) |
---|
| 2986 | || |
---|
| 2987 | ( (r_read_fsm.read() == READ_TRT_LOCK) && |
---|
| 2988 | (r_alloc_trt_fsm.read() == ALLOC_TRT_READ) ) ) |
---|
| 2989 | { |
---|
| 2990 | if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
| 2991 | else if ((r_llsc_fsm.read() == LL_DIR_LOCK) || |
---|
| 2992 | (r_llsc_fsm.read() == SC_DIR_LOCK)) r_alloc_dir_fsm = ALLOC_DIR_LLSC; |
---|
| 2993 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
| 2994 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
| 2995 | } |
---|
| 2996 | break; |
---|
| 2997 | |
---|
| 2998 | ///////////////////// |
---|
| 2999 | case ALLOC_DIR_WRITE: |
---|
| 3000 | if ( ( (r_write_fsm.read() != WRITE_DIR_LOCK) && |
---|
| 3001 | (r_write_fsm.read() != WRITE_TRT_LOCK) && |
---|
| 3002 | (r_write_fsm.read() != WRITE_DIR_HIT_READ) && |
---|
| 3003 | (r_write_fsm.read() != WRITE_TRT_WRITE_LOCK) && |
---|
| 3004 | (r_write_fsm.read() != WRITE_INVAL_LOCK) ) |
---|
| 3005 | || |
---|
| 3006 | ( (r_write_fsm.read() == WRITE_TRT_LOCK) && |
---|
| 3007 | (r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE) ) ) |
---|
| 3008 | { |
---|
| 3009 | if ((r_llsc_fsm.read() == LL_DIR_LOCK) || |
---|
| 3010 | (r_llsc_fsm.read() == SC_DIR_LOCK)) r_alloc_dir_fsm = ALLOC_DIR_LLSC; |
---|
| 3011 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
| 3012 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
| 3013 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 3014 | } |
---|
| 3015 | break; |
---|
| 3016 | |
---|
| 3017 | //////////////////// |
---|
| 3018 | case ALLOC_DIR_LLSC: |
---|
| 3019 | if ( ( (r_llsc_fsm.read() != LL_DIR_LOCK) && |
---|
| 3020 | (r_llsc_fsm.read() != LL_DIR_HIT ) && |
---|
| 3021 | (r_llsc_fsm.read() != SC_DIR_LOCK) && |
---|
| 3022 | (r_llsc_fsm.read() != SC_DIR_HIT ) && |
---|
| 3023 | (r_llsc_fsm.read() != LLSC_TRT_LOCK ) ) |
---|
| 3024 | || |
---|
| 3025 | ( (r_llsc_fsm.read() == LLSC_TRT_LOCK ) && |
---|
| 3026 | (r_alloc_trt_fsm.read() == ALLOC_TRT_LLSC) ) ) |
---|
| 3027 | { |
---|
| 3028 | if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
| 3029 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
| 3030 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 3031 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
| 3032 | } |
---|
| 3033 | break; |
---|
| 3034 | |
---|
| 3035 | /////////////////////// |
---|
| 3036 | case ALLOC_DIR_CLEANUP: |
---|
| 3037 | if ( (r_cleanup_fsm.read() != CLEANUP_DIR_LOCK) && |
---|
| 3038 | (r_cleanup_fsm.read() != CLEANUP_DIR_WRITE) ) |
---|
| 3039 | { |
---|
| 3040 | if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
| 3041 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 3042 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
| 3043 | else if ((r_llsc_fsm.read() == LL_DIR_LOCK) || |
---|
| 3044 | (r_llsc_fsm.read() == SC_DIR_LOCK)) r_alloc_dir_fsm = ALLOC_DIR_LLSC; |
---|
| 3045 | } |
---|
| 3046 | break; |
---|
| 3047 | //////////////////////// |
---|
| 3048 | case ALLOC_DIR_XRAM_RSP: |
---|
| 3049 | if ( (r_xram_rsp_fsm.read() != XRAM_RSP_DIR_LOCK) && |
---|
| 3050 | (r_xram_rsp_fsm.read() != XRAM_RSP_TRT_COPY) && |
---|
| 3051 | (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK)) |
---|
| 3052 | { |
---|
| 3053 | if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 3054 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
| 3055 | else if ( (r_llsc_fsm.read() == LL_DIR_LOCK) || |
---|
| 3056 | (r_llsc_fsm.read() == SC_DIR_LOCK)) r_alloc_dir_fsm = ALLOC_DIR_LLSC; |
---|
| 3057 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
| 3058 | } |
---|
| 3059 | break; |
---|
| 3060 | |
---|
| 3061 | } // end switch alloc_dir_fsm |
---|
| 3062 | |
---|
| 3063 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3064 | // ALLOC_TRT FSM |
---|
| 3065 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3066 | // The ALLOC_TRT fsm allocates the access to the Transaction Table (write buffer) |
---|
| 3067 | // with a round robin priority between 4 user FSMs : |
---|
| 3068 | // The cyclic priority is READ > WRITE > LLSC > XRAM_RSP |
---|
| 3069 | // The ressource is always allocated. |
---|
| 3070 | /////////////////////////////////////////////////////////////////////////////////// |
---|
| 3071 | |
---|
| 3072 | switch (r_alloc_trt_fsm) { |
---|
| 3073 | |
---|
| 3074 | //////////////////// |
---|
| 3075 | case ALLOC_TRT_READ: |
---|
| 3076 | if ( r_read_fsm.read() != READ_TRT_LOCK ) |
---|
| 3077 | { |
---|
| 3078 | if ((r_write_fsm.read() == WRITE_TRT_LOCK) || |
---|
| 3079 | (r_write_fsm.read() == WRITE_TRT_WRITE_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
| 3080 | else if (r_llsc_fsm.read() == LLSC_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_LLSC; |
---|
| 3081 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
| 3082 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
| 3083 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ) ) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
| 3084 | } |
---|
| 3085 | break; |
---|
| 3086 | ///////////////////// |
---|
| 3087 | case ALLOC_TRT_WRITE: |
---|
| 3088 | if ( (r_write_fsm.read() != WRITE_TRT_LOCK) && |
---|
| 3089 | (r_write_fsm.read() != WRITE_TRT_WRITE_LOCK) && |
---|
| 3090 | (r_write_fsm.read() != WRITE_INVAL_LOCK)) |
---|
| 3091 | { |
---|
| 3092 | if (r_llsc_fsm.read() == LLSC_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_LLSC; |
---|
| 3093 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
| 3094 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
| 3095 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
| 3096 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 3097 | } |
---|
| 3098 | break; |
---|
| 3099 | //////////////////// |
---|
| 3100 | case ALLOC_TRT_LLSC: |
---|
| 3101 | if ( r_llsc_fsm.read() != LLSC_TRT_LOCK ) |
---|
| 3102 | { |
---|
| 3103 | if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
| 3104 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
| 3105 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
| 3106 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 3107 | else if ((r_write_fsm.read() == WRITE_TRT_LOCK) || |
---|
| 3108 | (r_write_fsm.read() == WRITE_TRT_WRITE_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
| 3109 | } |
---|
| 3110 | break; |
---|
| 3111 | //////////////////////// |
---|
| 3112 | case ALLOC_TRT_XRAM_RSP: |
---|
| 3113 | if ( (r_xram_rsp_fsm.read() != XRAM_RSP_TRT_COPY) && |
---|
| 3114 | (r_xram_rsp_fsm.read() != XRAM_RSP_DIR_UPDT) && |
---|
| 3115 | (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK)) { |
---|
| 3116 | if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
| 3117 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
| 3118 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 3119 | else if ((r_write_fsm.read() == WRITE_TRT_LOCK) || |
---|
| 3120 | (r_write_fsm.read() == WRITE_TRT_WRITE_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
| 3121 | else if (r_llsc_fsm.read() == LLSC_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_LLSC; |
---|
| 3122 | } |
---|
| 3123 | break; |
---|
| 3124 | //////////////////////// |
---|
| 3125 | case ALLOC_TRT_IXR_RSP: |
---|
| 3126 | if ( (r_ixr_rsp_fsm.read() != IXR_RSP_TRT_ERASE) && |
---|
| 3127 | (r_ixr_rsp_fsm.read() != IXR_RSP_TRT_READ) ) { |
---|
| 3128 | if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 3129 | else if ((r_write_fsm.read() == WRITE_TRT_LOCK) || |
---|
| 3130 | (r_write_fsm.read() == WRITE_TRT_WRITE_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
| 3131 | else if (r_llsc_fsm.read() == LLSC_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_LLSC; |
---|
| 3132 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
| 3133 | } |
---|
| 3134 | break; |
---|
| 3135 | |
---|
| 3136 | } // end switch alloc_trt_fsm |
---|
| 3137 | |
---|
| 3138 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3139 | // TGT_CMD to READ FIFO |
---|
| 3140 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3141 | |
---|
| 3142 | if ( cmd_read_fifo_put ) { |
---|
| 3143 | if ( cmd_read_fifo_get ) { |
---|
| 3144 | m_cmd_read_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
| 3145 | m_cmd_read_word_fifo.put_and_get((p_vci_tgt.plen.read() == 4)); |
---|
| 3146 | m_cmd_read_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
| 3147 | m_cmd_read_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
| 3148 | m_cmd_read_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
| 3149 | } else { |
---|
| 3150 | m_cmd_read_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
| 3151 | m_cmd_read_word_fifo.simple_put((p_vci_tgt.plen.read() == 4)); |
---|
| 3152 | m_cmd_read_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
| 3153 | m_cmd_read_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
| 3154 | m_cmd_read_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
| 3155 | } |
---|
| 3156 | } else { |
---|
| 3157 | if ( cmd_read_fifo_get ) { |
---|
| 3158 | m_cmd_read_addr_fifo.simple_get(); |
---|
| 3159 | m_cmd_read_word_fifo.simple_get(); |
---|
| 3160 | m_cmd_read_srcid_fifo.simple_get(); |
---|
| 3161 | m_cmd_read_trdid_fifo.simple_get(); |
---|
| 3162 | m_cmd_read_pktid_fifo.simple_get(); |
---|
| 3163 | } |
---|
| 3164 | } |
---|
| 3165 | ///////////////////////////////////////////////////////////////////// |
---|
| 3166 | // TGT_CMD to WRITE FIFO |
---|
| 3167 | ///////////////////////////////////////////////////////////////////// |
---|
| 3168 | |
---|
| 3169 | if ( cmd_write_fifo_put ) { |
---|
| 3170 | if ( cmd_write_fifo_get ) { |
---|
| 3171 | m_cmd_write_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
| 3172 | m_cmd_write_eop_fifo.put_and_get(p_vci_tgt.eop.read()); |
---|
| 3173 | m_cmd_write_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
| 3174 | m_cmd_write_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
| 3175 | m_cmd_write_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
| 3176 | m_cmd_write_data_fifo.put_and_get(p_vci_tgt.wdata.read()); |
---|
| 3177 | m_cmd_write_be_fifo.put_and_get(p_vci_tgt.be.read()); |
---|
| 3178 | } else { |
---|
| 3179 | m_cmd_write_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
| 3180 | m_cmd_write_eop_fifo.simple_put(p_vci_tgt.eop.read()); |
---|
| 3181 | m_cmd_write_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
| 3182 | m_cmd_write_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
| 3183 | m_cmd_write_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
| 3184 | m_cmd_write_data_fifo.simple_put(p_vci_tgt.wdata.read()); |
---|
| 3185 | m_cmd_write_be_fifo.simple_put(p_vci_tgt.be.read()); |
---|
| 3186 | } |
---|
| 3187 | } else { |
---|
| 3188 | if ( cmd_write_fifo_get ) { |
---|
| 3189 | m_cmd_write_addr_fifo.simple_get(); |
---|
| 3190 | m_cmd_write_eop_fifo.simple_get(); |
---|
| 3191 | m_cmd_write_srcid_fifo.simple_get(); |
---|
| 3192 | m_cmd_write_trdid_fifo.simple_get(); |
---|
| 3193 | m_cmd_write_pktid_fifo.simple_get(); |
---|
| 3194 | m_cmd_write_data_fifo.simple_get(); |
---|
| 3195 | m_cmd_write_be_fifo.simple_get(); |
---|
| 3196 | } |
---|
| 3197 | } |
---|
| 3198 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3199 | // TGT_CMD to LLSC FIFO |
---|
| 3200 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3201 | |
---|
| 3202 | if ( cmd_llsc_fifo_put ) { |
---|
| 3203 | if ( cmd_llsc_fifo_get ) { |
---|
| 3204 | m_cmd_llsc_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
| 3205 | m_cmd_llsc_sc_fifo.put_and_get(p_vci_tgt.cmd.read() == vci_param::CMD_STORE_COND); |
---|
| 3206 | m_cmd_llsc_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
| 3207 | m_cmd_llsc_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
| 3208 | m_cmd_llsc_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
| 3209 | m_cmd_llsc_wdata_fifo.put_and_get(p_vci_tgt.wdata.read()); |
---|
| 3210 | } else { |
---|
| 3211 | m_cmd_llsc_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
| 3212 | m_cmd_llsc_sc_fifo.simple_put(p_vci_tgt.cmd.read() == vci_param::CMD_STORE_COND); |
---|
| 3213 | m_cmd_llsc_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
| 3214 | m_cmd_llsc_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
| 3215 | m_cmd_llsc_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
| 3216 | m_cmd_llsc_wdata_fifo.simple_put(p_vci_tgt.wdata.read()); |
---|
| 3217 | } |
---|
| 3218 | } else { |
---|
| 3219 | if ( cmd_llsc_fifo_get ) { |
---|
| 3220 | m_cmd_llsc_addr_fifo.simple_get(); |
---|
| 3221 | m_cmd_llsc_sc_fifo.simple_get(); |
---|
| 3222 | m_cmd_llsc_srcid_fifo.simple_get(); |
---|
| 3223 | m_cmd_llsc_trdid_fifo.simple_get(); |
---|
| 3224 | m_cmd_llsc_pktid_fifo.simple_get(); |
---|
| 3225 | m_cmd_llsc_wdata_fifo.simple_get(); |
---|
| 3226 | } |
---|
| 3227 | } |
---|
| 3228 | |
---|
| 3229 | ////////////////////////////////////////////////////////////// |
---|
| 3230 | m_cpt_cycles++; |
---|
| 3231 | |
---|
| 3232 | } // end transition() |
---|
| 3233 | |
---|
| 3234 | ///////////////////////////// |
---|
| 3235 | tmpl(void)::genMoore() |
---|
| 3236 | ///////////////////////////// |
---|
| 3237 | { |
---|
| 3238 | //////////////////////////////////////////////////////////// |
---|
| 3239 | // Command signals on the p_vci_ixr port |
---|
| 3240 | //////////////////////////////////////////////////////////// |
---|
| 3241 | |
---|
| 3242 | |
---|
| 3243 | p_vci_ixr.be = 0xF; |
---|
| 3244 | p_vci_ixr.pktid = 0; |
---|
| 3245 | p_vci_ixr.srcid = m_srcid_ixr; |
---|
| 3246 | p_vci_ixr.cons = false; |
---|
| 3247 | p_vci_ixr.wrap = false; |
---|
| 3248 | p_vci_ixr.contig = true; |
---|
| 3249 | p_vci_ixr.clen = 0; |
---|
| 3250 | p_vci_ixr.cfixed = false; |
---|
| 3251 | |
---|
| 3252 | if ( r_ixr_cmd_fsm.read() == IXR_CMD_READ_NLINE ) { |
---|
| 3253 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
| 3254 | p_vci_ixr.cmdval = true; |
---|
| 3255 | p_vci_ixr.address = (addr_t)(r_read_to_ixr_cmd_nline.read()*m_words*4); |
---|
| 3256 | p_vci_ixr.plen = m_words*4; |
---|
| 3257 | p_vci_ixr.wdata = 0x00000000; |
---|
| 3258 | p_vci_ixr.trdid = r_read_to_ixr_cmd_trdid.read(); |
---|
| 3259 | p_vci_ixr.eop = true; |
---|
| 3260 | } |
---|
| 3261 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_LLSC_NLINE ) { |
---|
| 3262 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
| 3263 | p_vci_ixr.cmdval = true; |
---|
| 3264 | p_vci_ixr.address = (addr_t)(r_llsc_to_ixr_cmd_nline.read()*m_words*4); |
---|
| 3265 | p_vci_ixr.plen = m_words*4; |
---|
| 3266 | p_vci_ixr.wdata = 0x00000000; |
---|
| 3267 | p_vci_ixr.trdid = r_llsc_to_ixr_cmd_trdid.read(); |
---|
| 3268 | p_vci_ixr.eop = true; |
---|
| 3269 | } |
---|
| 3270 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_WRITE_NLINE ) { |
---|
| 3271 | if(r_write_to_ixr_cmd_write.read()){ |
---|
| 3272 | p_vci_ixr.cmd = vci_param::CMD_WRITE; |
---|
| 3273 | p_vci_ixr.cmdval = true; |
---|
| 3274 | p_vci_ixr.address = (addr_t)((r_write_to_ixr_cmd_nline.read()*m_words+r_ixr_cmd_cpt.read())*4); |
---|
| 3275 | p_vci_ixr.plen = m_words*4; |
---|
| 3276 | p_vci_ixr.wdata = r_write_to_ixr_cmd_data[r_ixr_cmd_cpt.read()].read(); |
---|
| 3277 | p_vci_ixr.trdid = r_write_to_ixr_cmd_trdid.read(); |
---|
| 3278 | p_vci_ixr.eop = (r_ixr_cmd_cpt == (m_words-1)); |
---|
| 3279 | } else { |
---|
| 3280 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
| 3281 | p_vci_ixr.cmdval = true; |
---|
| 3282 | p_vci_ixr.address = (addr_t)(r_write_to_ixr_cmd_nline.read()*m_words*4); |
---|
| 3283 | p_vci_ixr.plen = m_words*4; |
---|
| 3284 | p_vci_ixr.wdata = 0x00000000; |
---|
| 3285 | p_vci_ixr.trdid = r_write_to_ixr_cmd_trdid.read(); |
---|
| 3286 | p_vci_ixr.eop = true; |
---|
| 3287 | } |
---|
| 3288 | } |
---|
| 3289 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_XRAM_DATA ) { |
---|
| 3290 | p_vci_ixr.cmd = vci_param::CMD_WRITE; |
---|
| 3291 | p_vci_ixr.cmdval = true; |
---|
| 3292 | p_vci_ixr.address = (addr_t)((r_xram_rsp_to_ixr_cmd_nline.read()*m_words+r_ixr_cmd_cpt.read())*4); |
---|
| 3293 | p_vci_ixr.plen = m_words*4; |
---|
| 3294 | p_vci_ixr.wdata = r_xram_rsp_to_ixr_cmd_data[r_ixr_cmd_cpt.read()].read(); |
---|
| 3295 | p_vci_ixr.trdid = r_xram_rsp_to_ixr_cmd_trdid.read(); |
---|
| 3296 | p_vci_ixr.eop = (r_ixr_cmd_cpt == (m_words-1)); |
---|
| 3297 | } else { |
---|
| 3298 | p_vci_ixr.cmdval = false; |
---|
| 3299 | p_vci_ixr.address = 0; |
---|
| 3300 | p_vci_ixr.plen = 0; |
---|
| 3301 | p_vci_ixr.wdata = 0; |
---|
| 3302 | p_vci_ixr.trdid = 0; |
---|
| 3303 | p_vci_ixr.eop = false; |
---|
| 3304 | } |
---|
| 3305 | |
---|
| 3306 | //////////////////////////////////////////////////// |
---|
| 3307 | // Response signals on the p_vci_ixr port |
---|
| 3308 | //////////////////////////////////////////////////// |
---|
| 3309 | |
---|
| 3310 | if ( ((r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP) && |
---|
| 3311 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) || |
---|
| 3312 | (r_ixr_rsp_fsm.read() == IXR_RSP_ACK) ) p_vci_ixr.rspack = true; |
---|
| 3313 | else p_vci_ixr.rspack = false; |
---|
| 3314 | |
---|
| 3315 | //////////////////////////////////////////////////// |
---|
| 3316 | // Command signals on the p_vci_tgt port |
---|
| 3317 | //////////////////////////////////////////////////// |
---|
| 3318 | |
---|
| 3319 | switch ((tgt_cmd_fsm_state_e)r_tgt_cmd_fsm.read()) { |
---|
| 3320 | case TGT_CMD_IDLE: |
---|
| 3321 | p_vci_tgt.cmdack = false; |
---|
| 3322 | break; |
---|
| 3323 | case TGT_CMD_READ: |
---|
| 3324 | p_vci_tgt.cmdack = m_cmd_read_addr_fifo.wok(); |
---|
| 3325 | break; |
---|
| 3326 | case TGT_CMD_READ_EOP: |
---|
| 3327 | p_vci_tgt.cmdack = true; |
---|
| 3328 | break; |
---|
| 3329 | case TGT_CMD_WRITE: |
---|
| 3330 | p_vci_tgt.cmdack = m_cmd_write_addr_fifo.wok(); |
---|
| 3331 | break; |
---|
| 3332 | case TGT_CMD_ATOMIC: |
---|
| 3333 | p_vci_tgt.cmdack = m_cmd_llsc_addr_fifo.wok(); |
---|
| 3334 | break; |
---|
| 3335 | default: |
---|
| 3336 | p_vci_tgt.cmdack = false; |
---|
| 3337 | break; |
---|
| 3338 | } |
---|
| 3339 | |
---|
| 3340 | //////////////////////////////////////////////////// |
---|
| 3341 | // Response signals on the p_vci_tgt port |
---|
| 3342 | //////////////////////////////////////////////////// |
---|
| 3343 | switch ( r_tgt_rsp_fsm.read() ) { |
---|
| 3344 | |
---|
| 3345 | case TGT_RSP_READ_IDLE: |
---|
| 3346 | case TGT_RSP_WRITE_IDLE: |
---|
| 3347 | case TGT_RSP_LLSC_IDLE: |
---|
| 3348 | case TGT_RSP_XRAM_IDLE: |
---|
| 3349 | case TGT_RSP_INIT_IDLE: |
---|
| 3350 | case TGT_RSP_CLEANUP_IDLE: |
---|
| 3351 | case TGT_RSP_READ_TEST: |
---|
| 3352 | case TGT_RSP_XRAM_TEST: |
---|
| 3353 | |
---|
| 3354 | p_vci_tgt.rspval = false; |
---|
| 3355 | p_vci_tgt.rsrcid = 0; |
---|
| 3356 | p_vci_tgt.rdata = 0; |
---|
| 3357 | p_vci_tgt.rpktid = 0; |
---|
| 3358 | p_vci_tgt.rtrdid = 0; |
---|
| 3359 | p_vci_tgt.rerror = 0; |
---|
| 3360 | p_vci_tgt.reop = false; |
---|
| 3361 | break; |
---|
| 3362 | case TGT_RSP_READ_LINE: |
---|
| 3363 | p_vci_tgt.rspval = true; |
---|
| 3364 | p_vci_tgt.rdata = r_read_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read(); |
---|
| 3365 | p_vci_tgt.rsrcid = r_read_to_tgt_rsp_srcid.read(); |
---|
| 3366 | p_vci_tgt.rtrdid = r_read_to_tgt_rsp_trdid.read(); |
---|
| 3367 | p_vci_tgt.rpktid = r_read_to_tgt_rsp_pktid.read(); |
---|
| 3368 | p_vci_tgt.rerror = 0; |
---|
| 3369 | p_vci_tgt.reop = (r_tgt_rsp_cpt.read() == (m_words-1)); |
---|
| 3370 | break; |
---|
| 3371 | case TGT_RSP_READ_WORD: |
---|
| 3372 | p_vci_tgt.rspval = true; |
---|
| 3373 | p_vci_tgt.rdata = r_read_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read(); |
---|
| 3374 | p_vci_tgt.rsrcid = r_read_to_tgt_rsp_srcid.read(); |
---|
| 3375 | p_vci_tgt.rtrdid = r_read_to_tgt_rsp_trdid.read(); |
---|
| 3376 | p_vci_tgt.rpktid = r_read_to_tgt_rsp_pktid.read(); |
---|
| 3377 | p_vci_tgt.rerror = 0; |
---|
| 3378 | p_vci_tgt.reop = true; |
---|
| 3379 | break; |
---|
| 3380 | case TGT_RSP_WRITE: |
---|
| 3381 | p_vci_tgt.rspval = true; |
---|
| 3382 | p_vci_tgt.rdata = 0; |
---|
| 3383 | p_vci_tgt.rsrcid = r_write_to_tgt_rsp_srcid.read(); |
---|
| 3384 | p_vci_tgt.rtrdid = r_write_to_tgt_rsp_trdid.read(); |
---|
| 3385 | p_vci_tgt.rpktid = r_write_to_tgt_rsp_pktid.read(); |
---|
| 3386 | p_vci_tgt.rerror = 0; |
---|
| 3387 | p_vci_tgt.reop = true; |
---|
| 3388 | break; |
---|
| 3389 | case TGT_RSP_CLEANUP: |
---|
| 3390 | p_vci_tgt.rspval = true; |
---|
| 3391 | p_vci_tgt.rdata = 0; |
---|
| 3392 | p_vci_tgt.rsrcid = r_cleanup_to_tgt_rsp_srcid.read(); |
---|
| 3393 | p_vci_tgt.rtrdid = r_cleanup_to_tgt_rsp_trdid.read(); |
---|
| 3394 | p_vci_tgt.rpktid = r_cleanup_to_tgt_rsp_pktid.read(); |
---|
| 3395 | p_vci_tgt.rerror = 0; |
---|
| 3396 | p_vci_tgt.reop = true; |
---|
| 3397 | break; |
---|
| 3398 | case TGT_RSP_LLSC: |
---|
| 3399 | p_vci_tgt.rspval = true; |
---|
| 3400 | p_vci_tgt.rdata = r_llsc_to_tgt_rsp_data.read(); |
---|
| 3401 | p_vci_tgt.rsrcid = r_llsc_to_tgt_rsp_srcid.read(); |
---|
| 3402 | p_vci_tgt.rtrdid = r_llsc_to_tgt_rsp_trdid.read(); |
---|
| 3403 | p_vci_tgt.rpktid = r_llsc_to_tgt_rsp_pktid.read(); |
---|
| 3404 | p_vci_tgt.rerror = 0; |
---|
| 3405 | p_vci_tgt.reop = true; |
---|
| 3406 | break; |
---|
| 3407 | case TGT_RSP_XRAM_LINE: |
---|
| 3408 | p_vci_tgt.rspval = true; |
---|
| 3409 | p_vci_tgt.rdata = r_xram_rsp_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read(); |
---|
| 3410 | p_vci_tgt.rsrcid = r_xram_rsp_to_tgt_rsp_srcid.read(); |
---|
| 3411 | p_vci_tgt.rtrdid = r_xram_rsp_to_tgt_rsp_trdid.read(); |
---|
| 3412 | p_vci_tgt.rpktid = r_xram_rsp_to_tgt_rsp_pktid.read(); |
---|
| 3413 | p_vci_tgt.rerror = 0; |
---|
| 3414 | p_vci_tgt.reop = (r_tgt_rsp_cpt.read() == (m_words-1)); |
---|
| 3415 | break; |
---|
| 3416 | case TGT_RSP_XRAM_WORD: |
---|
| 3417 | p_vci_tgt.rspval = true; |
---|
| 3418 | p_vci_tgt.rdata = r_xram_rsp_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read(); |
---|
| 3419 | p_vci_tgt.rsrcid = r_xram_rsp_to_tgt_rsp_srcid.read(); |
---|
| 3420 | p_vci_tgt.rtrdid = r_xram_rsp_to_tgt_rsp_trdid.read(); |
---|
| 3421 | p_vci_tgt.rpktid = r_xram_rsp_to_tgt_rsp_pktid.read(); |
---|
| 3422 | p_vci_tgt.rerror = 0; |
---|
| 3423 | p_vci_tgt.reop = true; |
---|
| 3424 | break; |
---|
| 3425 | case TGT_RSP_INIT: |
---|
| 3426 | p_vci_tgt.rspval = true; |
---|
| 3427 | p_vci_tgt.rdata = 0; |
---|
| 3428 | p_vci_tgt.rsrcid = r_init_rsp_to_tgt_rsp_srcid.read(); |
---|
| 3429 | p_vci_tgt.rtrdid = r_init_rsp_to_tgt_rsp_trdid.read(); |
---|
| 3430 | p_vci_tgt.rpktid = r_init_rsp_to_tgt_rsp_pktid.read(); |
---|
| 3431 | p_vci_tgt.rerror = 0; |
---|
| 3432 | p_vci_tgt.reop = true; |
---|
| 3433 | break; |
---|
| 3434 | } // end switch r_tgt_rsp_fsm |
---|
| 3435 | |
---|
| 3436 | /////////////////////////////////////////////////// |
---|
| 3437 | // Command signals on the p_vci_ini port |
---|
| 3438 | /////////////////////////////////////////////////// |
---|
| 3439 | |
---|
| 3440 | p_vci_ini.cmd = vci_param::CMD_WRITE; |
---|
| 3441 | p_vci_ini.srcid = m_srcid_ini; |
---|
| 3442 | p_vci_ini.pktid = 0; |
---|
| 3443 | p_vci_ini.cons = true; |
---|
| 3444 | p_vci_ini.wrap = false; |
---|
| 3445 | p_vci_ini.contig = false; |
---|
| 3446 | p_vci_ini.clen = 0; |
---|
| 3447 | p_vci_ini.cfixed = false; |
---|
| 3448 | |
---|
| 3449 | switch ( r_init_cmd_fsm.read() ) { |
---|
| 3450 | |
---|
| 3451 | case INIT_CMD_UPDT_IDLE: |
---|
| 3452 | case INIT_CMD_INVAL_IDLE: |
---|
| 3453 | case INIT_CMD_UPDT_SEL: |
---|
| 3454 | case INIT_CMD_INVAL_SEL: |
---|
| 3455 | p_vci_ini.cmdval = false; |
---|
| 3456 | p_vci_ini.address = 0; |
---|
| 3457 | p_vci_ini.wdata = 0; |
---|
| 3458 | p_vci_ini.be = 0; |
---|
| 3459 | p_vci_ini.plen = 0; |
---|
| 3460 | p_vci_ini.trdid = 0; |
---|
| 3461 | p_vci_ini.eop = false; |
---|
| 3462 | break; |
---|
| 3463 | case INIT_CMD_INVAL_NLINE: |
---|
| 3464 | p_vci_ini.cmdval = true; |
---|
| 3465 | if(r_xram_rsp_to_init_cmd_brdcast.read()) |
---|
| 3466 | p_vci_ini.address = BROADCAST_ADDR; |
---|
| 3467 | else { |
---|
| 3468 | if(r_init_cmd_inst.read()) { |
---|
| 3469 | p_vci_ini.address = (addr_t)(m_coherence_table[r_init_cmd_target.read()]+8); |
---|
| 3470 | } else { |
---|
| 3471 | p_vci_ini.address = (addr_t)(m_coherence_table[r_init_cmd_target.read()]); |
---|
| 3472 | } |
---|
| 3473 | } |
---|
| 3474 | p_vci_ini.wdata = (uint32_t)r_xram_rsp_to_init_cmd_nline.read(); |
---|
| 3475 | p_vci_ini.be = ((r_xram_rsp_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
| 3476 | p_vci_ini.plen = 4; |
---|
| 3477 | p_vci_ini.trdid = r_xram_rsp_to_init_cmd_trdid.read(); |
---|
| 3478 | p_vci_ini.eop = true; |
---|
| 3479 | break; |
---|
| 3480 | case INIT_CMD_BRDCAST: |
---|
| 3481 | p_vci_ini.cmdval = true; |
---|
| 3482 | p_vci_ini.address = BROADCAST_ADDR; |
---|
| 3483 | p_vci_ini.wdata = (addr_t)r_write_to_init_cmd_nline.read(); |
---|
| 3484 | p_vci_ini.be = ((r_write_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
| 3485 | p_vci_ini.plen = 4 ; |
---|
| 3486 | p_vci_ini.eop = true; |
---|
| 3487 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
| 3488 | break; |
---|
| 3489 | case INIT_CMD_UPDT_NLINE: |
---|
| 3490 | p_vci_ini.cmdval = true; |
---|
| 3491 | if(r_init_cmd_inst.read()){ |
---|
| 3492 | p_vci_ini.address = (addr_t)(m_coherence_table[r_init_cmd_target.read()] + 12); |
---|
| 3493 | } else { |
---|
| 3494 | p_vci_ini.address = (addr_t)(m_coherence_table[r_init_cmd_target.read()] + 4); |
---|
| 3495 | } |
---|
| 3496 | p_vci_ini.wdata = (uint32_t)r_write_to_init_cmd_nline.read(); |
---|
| 3497 | p_vci_ini.be = ((r_write_to_init_cmd_nline.read() >> 32 ) & 0x3); |
---|
| 3498 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
| 3499 | p_vci_ini.eop = false; |
---|
| 3500 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
| 3501 | break; |
---|
| 3502 | case INIT_CMD_UPDT_INDEX: |
---|
| 3503 | p_vci_ini.cmdval = true; |
---|
| 3504 | if(r_init_cmd_inst.read()){ |
---|
| 3505 | p_vci_ini.address = (addr_t)(m_coherence_table[r_init_cmd_target.read()] + 12); |
---|
| 3506 | } else { |
---|
| 3507 | p_vci_ini.address = (addr_t)(m_coherence_table[r_init_cmd_target.read()] + 4); |
---|
| 3508 | } |
---|
| 3509 | p_vci_ini.wdata = r_write_to_init_cmd_index.read(); |
---|
| 3510 | p_vci_ini.be = 0xF; |
---|
| 3511 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
| 3512 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
| 3513 | p_vci_ini.eop = false; |
---|
| 3514 | break; |
---|
| 3515 | case INIT_CMD_UPDT_DATA: |
---|
| 3516 | p_vci_ini.cmdval = true; |
---|
| 3517 | if(r_init_cmd_inst.read()){ |
---|
| 3518 | p_vci_ini.address = (addr_t)(m_coherence_table[r_init_cmd_target.read()] + 12); |
---|
| 3519 | } else { |
---|
| 3520 | p_vci_ini.address = (addr_t)(m_coherence_table[r_init_cmd_target.read()] + 4); |
---|
| 3521 | } |
---|
| 3522 | p_vci_ini.wdata = r_write_to_init_cmd_data[r_init_cmd_cpt.read() + |
---|
| 3523 | r_write_to_init_cmd_index.read()].read(); |
---|
| 3524 | if(r_write_to_init_cmd_we[r_init_cmd_cpt.read() + |
---|
| 3525 | r_write_to_init_cmd_index.read()].read()) |
---|
| 3526 | p_vci_ini.be = 0xF; |
---|
| 3527 | else p_vci_ini.be = 0x0; |
---|
| 3528 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
| 3529 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
| 3530 | p_vci_ini.eop = ( r_init_cmd_cpt.read() == (r_write_to_init_cmd_count.read()-1) ); |
---|
| 3531 | break; |
---|
| 3532 | } // end switch r_init_cmd_fsm |
---|
| 3533 | |
---|
| 3534 | ////////////////////////////////////////////////////// |
---|
| 3535 | // Response signals on the p_vci_ini port |
---|
| 3536 | ////////////////////////////////////////////////////// |
---|
| 3537 | |
---|
| 3538 | if ( r_init_rsp_fsm.read() == INIT_RSP_IDLE ) p_vci_ini.rspack = true; |
---|
| 3539 | else p_vci_ini.rspack = false; |
---|
| 3540 | |
---|
| 3541 | ////////////////////////////////////////////////////// |
---|
| 3542 | // Response signals on the p_vci_tgt_cleanup port |
---|
| 3543 | ////////////////////////////////////////////////////// |
---|
| 3544 | p_vci_tgt_cleanup.rspval = false; |
---|
| 3545 | p_vci_tgt_cleanup.rsrcid = 0; |
---|
| 3546 | p_vci_tgt_cleanup.rdata = 0; |
---|
| 3547 | p_vci_tgt_cleanup.rpktid = 0; |
---|
| 3548 | p_vci_tgt_cleanup.rtrdid = 0; |
---|
| 3549 | p_vci_tgt_cleanup.rerror = 0; |
---|
| 3550 | p_vci_tgt_cleanup.reop = false; |
---|
| 3551 | |
---|
| 3552 | switch(r_cleanup_fsm.read()){ |
---|
| 3553 | case CLEANUP_IDLE: |
---|
| 3554 | { |
---|
| 3555 | p_vci_tgt_cleanup.cmdack = true ; |
---|
| 3556 | break; |
---|
| 3557 | } |
---|
| 3558 | case CLEANUP_DIR_LOCK: |
---|
| 3559 | { |
---|
| 3560 | p_vci_tgt_cleanup.cmdack = false ; |
---|
| 3561 | break; |
---|
| 3562 | } |
---|
| 3563 | case CLEANUP_RSP: |
---|
| 3564 | { |
---|
| 3565 | p_vci_tgt_cleanup.rspval = true; |
---|
| 3566 | p_vci_tgt_cleanup.rdata = 0; |
---|
| 3567 | p_vci_tgt_cleanup.rsrcid = r_cleanup_srcid.read(); |
---|
| 3568 | p_vci_tgt_cleanup.rpktid = r_cleanup_pktid.read(); |
---|
| 3569 | p_vci_tgt_cleanup.rtrdid = r_cleanup_trdid.read(); |
---|
| 3570 | p_vci_tgt_cleanup.rerror = 0; |
---|
| 3571 | p_vci_tgt_cleanup.reop = 1; |
---|
| 3572 | break; |
---|
| 3573 | } |
---|
| 3574 | |
---|
| 3575 | } |
---|
| 3576 | |
---|
| 3577 | } // end genMoore() |
---|
| 3578 | |
---|
| 3579 | }} // end name space |
---|
| 3580 | |
---|
| 3581 | // Local Variables: |
---|
| 3582 | // tab-width: 4 |
---|
| 3583 | // c-basic-offset: 4 |
---|
| 3584 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
---|
| 3585 | // indent-tabs-mode: nil |
---|
| 3586 | // End: |
---|
| 3587 | |
---|
| 3588 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
---|
| 3589 | |
---|