[2] | 1 | /* -*- c++ -*- |
---|
| 2 | * File : vci_mem_cache_v3.cpp |
---|
| 3 | * Date : 30/10/2008 |
---|
| 4 | * Copyright : UPMC / LIP6 |
---|
| 5 | * Authors : Alain Greiner / Eric Guthmuller |
---|
| 6 | * |
---|
| 7 | * SOCLIB_LGPL_HEADER_BEGIN |
---|
| 8 | * |
---|
| 9 | * This file is part of SoCLib, GNU LGPLv2.1. |
---|
| 10 | * |
---|
| 11 | * SoCLib is free software; you can redistribute it and/or modify it |
---|
| 12 | * under the terms of the GNU Lesser General Public License as published |
---|
| 13 | * by the Free Software Foundation; version 2.1 of the License. |
---|
| 14 | * |
---|
| 15 | * SoCLib is distributed in the hope that it will be useful, but |
---|
| 16 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
| 18 | * Lesser General Public License for more details. |
---|
| 19 | * |
---|
| 20 | * You should have received a copy of the GNU Lesser General Public |
---|
| 21 | * License along with SoCLib; if not, write to the Free Software |
---|
| 22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
---|
| 23 | * 02110-1301 USA |
---|
| 24 | * |
---|
| 25 | * SOCLIB_LGPL_HEADER_END |
---|
| 26 | * |
---|
| 27 | * Maintainers: alain eric.guthmuller@polytechnique.edu |
---|
| 28 | */ |
---|
| 29 | #include "../include/vci_mem_cache_v3.h" |
---|
| 30 | |
---|
| 31 | //#define TDEBUG // Transaction tab debug |
---|
| 32 | //#define IDEBUG // Update tab debug |
---|
| 33 | //#define DDEBUG // Directory debug |
---|
| 34 | //#define DEBUG_VCI_MEM_CACHE 1 |
---|
| 35 | namespace soclib { namespace caba { |
---|
| 36 | |
---|
| 37 | #ifdef DEBUG_VCI_MEM_CACHE |
---|
| 38 | const char *tgt_cmd_fsm_str[] = { |
---|
| 39 | "TGT_CMD_IDLE", |
---|
| 40 | "TGT_CMD_READ", |
---|
| 41 | "TGT_CMD_READ_EOP", |
---|
| 42 | "TGT_CMD_WRITE", |
---|
| 43 | "TGT_CMD_ATOMIC", |
---|
| 44 | }; |
---|
| 45 | const char *tgt_rsp_fsm_str[] = { |
---|
| 46 | "TGT_RSP_READ_IDLE", |
---|
| 47 | "TGT_RSP_WRITE_IDLE", |
---|
| 48 | "TGT_RSP_LLSC_IDLE", |
---|
| 49 | "TGT_RSP_XRAM_IDLE", |
---|
| 50 | "TGT_RSP_INIT_IDLE", |
---|
| 51 | "TGT_RSP_CLEANUP_IDLE", |
---|
| 52 | "TGT_RSP_READ", |
---|
| 53 | "TGT_RSP_WRITE", |
---|
| 54 | "TGT_RSP_LLSC", |
---|
| 55 | "TGT_RSP_XRAM", |
---|
| 56 | "TGT_RSP_INIT", |
---|
| 57 | "TGT_RSP_CLEANUP", |
---|
| 58 | }; |
---|
| 59 | const char *init_cmd_fsm_str[] = { |
---|
| 60 | "INIT_CMD_INVAL_IDLE", |
---|
| 61 | "INIT_CMD_INVAL_NLINE", |
---|
| 62 | "INIT_CMD_XRAM_BRDCAST", |
---|
| 63 | "INIT_CMD_UPDT_IDLE", |
---|
| 64 | "INIT_CMD_WRITE_BRDCAST", |
---|
| 65 | "INIT_CMD_UPDT_NLINE", |
---|
| 66 | "INIT_CMD_UPDT_INDEX", |
---|
| 67 | "INIT_CMD_UPDT_DATA", |
---|
| 68 | "INIT_CMD_SC_UPDT_IDLE", |
---|
| 69 | "INIT_CMD_SC_BRDCAST", |
---|
| 70 | "INIT_CMD_SC_UPDT_NLINE", |
---|
| 71 | "INIT_CMD_SC_UPDT_INDEX", |
---|
| 72 | "INIT_CMD_SC_UPDT_DATA", |
---|
| 73 | }; |
---|
| 74 | const char *init_rsp_fsm_str[] = { |
---|
| 75 | "INIT_RSP_IDLE", |
---|
| 76 | "INIT_RSP_UPT_LOCK", |
---|
| 77 | "INIT_RSP_UPT_CLEAR", |
---|
| 78 | "INIT_RSP_END", |
---|
| 79 | }; |
---|
| 80 | const char *read_fsm_str[] = { |
---|
| 81 | "READ_IDLE", |
---|
| 82 | "READ_DIR_LOCK", |
---|
| 83 | "READ_DIR_HIT", |
---|
| 84 | "READ_HEAP_LOCK", |
---|
| 85 | "READ_HEAP_WRITE", |
---|
| 86 | "READ_HEAP_ERASE", |
---|
| 87 | "READ_HEAP_LAST", |
---|
| 88 | "READ_RSP", |
---|
| 89 | "READ_TRT_LOCK", |
---|
| 90 | "READ_TRT_SET", |
---|
| 91 | "READ_XRAM_REQ", |
---|
| 92 | }; |
---|
| 93 | const char *write_fsm_str[] = { |
---|
| 94 | "WRITE_IDLE", |
---|
| 95 | "WRITE_NEXT", |
---|
| 96 | "WRITE_DIR_LOCK", |
---|
| 97 | "WRITE_DIR_HIT_READ", |
---|
| 98 | "WRITE_DIR_HIT", |
---|
| 99 | "WRITE_DIR_HIT_RSP", |
---|
| 100 | "WRITE_UPT_LOCK", |
---|
| 101 | "WRITE_HEAP_LOCK", |
---|
| 102 | "WRITE_UPT_REQ", |
---|
| 103 | "WRITE_UPDATE", |
---|
| 104 | "WRITE_UPT_DEC", |
---|
| 105 | "WRITE_RSP", |
---|
| 106 | "WRITE_TRT_LOCK", |
---|
| 107 | "WRITE_TRT_DATA", |
---|
| 108 | "WRITE_TRT_SET", |
---|
| 109 | "WRITE_WAIT", |
---|
| 110 | "WRITE_XRAM_REQ", |
---|
| 111 | "WRITE_TRT_WRITE_LOCK", |
---|
| 112 | "WRITE_INVAL_LOCK", |
---|
| 113 | "WRITE_DIR_INVAL", |
---|
| 114 | "WRITE_INVAL", |
---|
| 115 | "WRITE_XRAM_SEND", |
---|
| 116 | "WRITE_HEAP_ERASE", |
---|
| 117 | "WRITE_HEAP_LAST", |
---|
| 118 | }; |
---|
| 119 | const char *ixr_rsp_fsm_str[] = { |
---|
| 120 | "IXR_RSP_IDLE", |
---|
| 121 | "IXR_RSP_ACK", |
---|
| 122 | "IXR_RSP_TRT_ERASE", |
---|
| 123 | "IXR_RSP_TRT_READ", |
---|
| 124 | }; |
---|
| 125 | const char *xram_rsp_fsm_str[] = { |
---|
| 126 | "XRAM_RSP_IDLE", |
---|
| 127 | "XRAM_RSP_TRT_COPY", |
---|
| 128 | "XRAM_RSP_TRT_DIRTY", |
---|
| 129 | "XRAM_RSP_DIR_LOCK", |
---|
| 130 | "XRAM_RSP_DIR_UPDT", |
---|
| 131 | "XRAM_RSP_DIR_RSP", |
---|
| 132 | "XRAM_RSP_INVAL_LOCK", |
---|
| 133 | "XRAM_RSP_INVAL_WAIT", |
---|
| 134 | "XRAM_RSP_INVAL", |
---|
| 135 | "XRAM_RSP_WRITE_DIRTY", |
---|
| 136 | "XRAM_RSP_HEAP_ERASE", |
---|
| 137 | "XRAM_RSP_HEAP_LAST", |
---|
| 138 | }; |
---|
| 139 | const char *ixr_cmd_fsm_str[] = { |
---|
| 140 | "IXR_CMD_READ_IDLE", |
---|
| 141 | "IXR_CMD_WRITE_IDLE", |
---|
| 142 | "IXR_CMD_LLSC_IDLE", |
---|
| 143 | "IXR_CMD_XRAM_IDLE", |
---|
| 144 | "IXR_CMD_READ_NLINE", |
---|
| 145 | "IXR_CMD_WRITE_NLINE", |
---|
| 146 | "IXR_CMD_LLSC_NLINE", |
---|
| 147 | "IXR_CMD_XRAM_DATA", |
---|
| 148 | }; |
---|
| 149 | const char *llsc_fsm_str[] = { |
---|
| 150 | "LLSC_IDLE", |
---|
| 151 | "LL_DIR_LOCK", |
---|
| 152 | "LL_DIR_HIT", |
---|
| 153 | "LL_RSP", |
---|
| 154 | "SC_DIR_LOCK", |
---|
| 155 | "SC_DIR_HIT", |
---|
| 156 | "SC_UPT_LOCK", |
---|
| 157 | "SC_WAIT", |
---|
| 158 | "SC_HEAP_LOCK", |
---|
| 159 | "SC_UPT_REQ", |
---|
| 160 | "SC_UPDATE", |
---|
| 161 | "SC_TRT_LOCK", |
---|
| 162 | "SC_INVAL_LOCK", |
---|
| 163 | "SC_DIR_INVAL", |
---|
| 164 | "SC_INVAL", |
---|
| 165 | "SC_XRAM_SEND", |
---|
| 166 | "SC_HEAP_ERASE", |
---|
| 167 | "SC_HEAP_LAST", |
---|
| 168 | "SC_RSP_FALSE", |
---|
| 169 | "SC_RSP_TRUE", |
---|
| 170 | "LLSC_TRT_LOCK", |
---|
| 171 | "LLSC_TRT_SET", |
---|
| 172 | "LLSC_XRAM_REQ", |
---|
| 173 | }; |
---|
| 174 | const char *cleanup_fsm_str[] = { |
---|
| 175 | "CLEANUP_IDLE", |
---|
| 176 | "CLEANUP_DIR_LOCK", |
---|
| 177 | "CLEANUP_DIR_WRITE", |
---|
| 178 | "CLEANUP_HEAP_LOCK", |
---|
| 179 | "CLEANUP_HEAP_SEARCH", |
---|
| 180 | "CLEANUP_HEAP_CLEAN", |
---|
| 181 | "CLEANUP_HEAP_FREE", |
---|
| 182 | "CLEANUP_UPT_LOCK", |
---|
| 183 | "CLEANUP_UPT_WRITE", |
---|
| 184 | "CLEANUP_WRITE_RSP", |
---|
| 185 | "CLEANUP_RSP", |
---|
| 186 | }; |
---|
| 187 | const char *alloc_dir_fsm_str[] = { |
---|
| 188 | "ALLOC_DIR_READ", |
---|
| 189 | "ALLOC_DIR_WRITE", |
---|
| 190 | "ALLOC_DIR_LLSC", |
---|
| 191 | "ALLOC_DIR_CLEANUP", |
---|
| 192 | "ALLOC_DIR_XRAM_RSP", |
---|
| 193 | }; |
---|
| 194 | const char *alloc_trt_fsm_str[] = { |
---|
| 195 | "ALLOC_TRT_READ", |
---|
| 196 | "ALLOC_TRT_WRITE", |
---|
| 197 | "ALLOC_TRT_LLSC", |
---|
| 198 | "ALLOC_TRT_XRAM_RSP", |
---|
| 199 | "ALLOC_TRT_IXR_RSP", |
---|
| 200 | }; |
---|
| 201 | const char *alloc_upt_fsm_str[] = { |
---|
| 202 | "ALLOC_UPT_WRITE", |
---|
| 203 | "ALLOC_UPT_XRAM_RSP", |
---|
| 204 | "ALLOC_UPT_INIT_RSP", |
---|
| 205 | "ALLOC_UPT_CLEANUP", |
---|
| 206 | }; |
---|
| 207 | const char *alloc_heap_fsm_str[] = { |
---|
| 208 | "ALLOC_HEAP_READ", |
---|
| 209 | "ALLOC_HEAP_WRITE", |
---|
| 210 | "ALLOC_HEAP_LLSC", |
---|
| 211 | "ALLOC_HEAP_CLEANUP", |
---|
| 212 | "ALLOC_HEAP_XRAM_RSP", |
---|
| 213 | }; |
---|
| 214 | |
---|
| 215 | #endif |
---|
| 216 | |
---|
| 217 | #define tmpl(x) template<typename vci_param> x VciMemCacheV3<vci_param> |
---|
| 218 | |
---|
| 219 | using soclib::common::uint32_log2; |
---|
| 220 | |
---|
| 221 | //////////////////////////////// |
---|
| 222 | // Constructor |
---|
| 223 | //////////////////////////////// |
---|
| 224 | |
---|
| 225 | tmpl(/**/)::VciMemCacheV3( |
---|
| 226 | sc_module_name name, |
---|
| 227 | const soclib::common::MappingTable &mtp, |
---|
| 228 | const soclib::common::MappingTable &mtc, |
---|
| 229 | const soclib::common::MappingTable &mtx, |
---|
| 230 | const soclib::common::IntTab &vci_ixr_index, |
---|
| 231 | const soclib::common::IntTab &vci_ini_index, |
---|
| 232 | const soclib::common::IntTab &vci_tgt_index, |
---|
| 233 | const soclib::common::IntTab &vci_tgt_index_cleanup, |
---|
| 234 | size_t nways, |
---|
| 235 | size_t nsets, |
---|
| 236 | size_t nwords, |
---|
| 237 | size_t heap_size) |
---|
| 238 | |
---|
| 239 | : soclib::caba::BaseModule(name), |
---|
| 240 | |
---|
| 241 | p_clk("clk"), |
---|
| 242 | p_resetn("resetn"), |
---|
| 243 | p_vci_tgt("vci_tgt"), |
---|
| 244 | p_vci_tgt_cleanup("vci_tgt_cleanup"), |
---|
| 245 | p_vci_ini("vci_ini"), |
---|
| 246 | p_vci_ixr("vci_ixr"), |
---|
| 247 | |
---|
| 248 | m_initiators( 1 << vci_param::S ), |
---|
| 249 | m_heap_size( heap_size ), |
---|
| 250 | m_ways( nways ), |
---|
| 251 | m_sets( nsets ), |
---|
| 252 | m_words( nwords ), |
---|
| 253 | m_srcid_ixr( mtx.indexForId(vci_ixr_index) ), |
---|
| 254 | m_srcid_ini( mtc.indexForId(vci_ini_index) ), |
---|
| 255 | m_seglist(mtp.getSegmentList(vci_tgt_index)), |
---|
| 256 | m_cseglist(mtc.getSegmentList(vci_tgt_index_cleanup)), |
---|
| 257 | m_coherence_table( mtc.getCoherenceTable<vci_addr_t>() ), |
---|
| 258 | m_atomic_tab( m_initiators ), |
---|
| 259 | m_transaction_tab( TRANSACTION_TAB_LINES, nwords ), |
---|
| 260 | m_update_tab( UPDATE_TAB_LINES ), |
---|
| 261 | m_cache_directory( nways, nsets, nwords, vci_param::N ), |
---|
| 262 | m_heap_directory( m_heap_size ), |
---|
| 263 | #define L2 soclib::common::uint32_log2 |
---|
| 264 | m_x( L2(m_words), 2), |
---|
| 265 | m_y( L2(m_sets), L2(m_words) + 2), |
---|
| 266 | m_z( vci_param::N - L2(m_sets) - L2(m_words) - 2, L2(m_sets) + L2(m_words) + 2), |
---|
| 267 | m_nline( vci_param::N - L2(m_words) - 2, L2(m_words) + 2), |
---|
| 268 | #undef L2 |
---|
| 269 | |
---|
| 270 | // FIFOs |
---|
| 271 | m_cmd_read_addr_fifo("m_cmd_read_addr_fifo", 4), |
---|
| 272 | m_cmd_read_length_fifo("m_cmd_read_length_fifo", 4), |
---|
| 273 | m_cmd_read_srcid_fifo("m_cmd_read_srcid_fifo", 4), |
---|
| 274 | m_cmd_read_trdid_fifo("m_cmd_read_trdid_fifo", 4), |
---|
| 275 | m_cmd_read_pktid_fifo("m_cmd_read_pktid_fifo", 4), |
---|
| 276 | |
---|
| 277 | m_cmd_write_addr_fifo("m_cmd_write_addr_fifo",8), |
---|
| 278 | m_cmd_write_eop_fifo("m_cmd_write_eop_fifo",8), |
---|
| 279 | m_cmd_write_srcid_fifo("m_cmd_write_srcid_fifo",8), |
---|
| 280 | m_cmd_write_trdid_fifo("m_cmd_write_trdid_fifo",8), |
---|
| 281 | m_cmd_write_pktid_fifo("m_cmd_write_pktid_fifo",8), |
---|
| 282 | m_cmd_write_data_fifo("m_cmd_write_data_fifo",8), |
---|
| 283 | m_cmd_write_be_fifo("m_cmd_write_be_fifo",8), |
---|
| 284 | |
---|
| 285 | m_cmd_llsc_addr_fifo("m_cmd_llsc_addr_fifo",4), |
---|
| 286 | m_cmd_llsc_sc_fifo("m_cmd_llsc_sc_fifo",4), |
---|
| 287 | m_cmd_llsc_srcid_fifo("m_cmd_llsc_srcid_fifo",4), |
---|
| 288 | m_cmd_llsc_trdid_fifo("m_cmd_llsc_trdid_fifo",4), |
---|
| 289 | m_cmd_llsc_pktid_fifo("m_cmd_llsc_pktid_fifo",4), |
---|
| 290 | m_cmd_llsc_wdata_fifo("m_cmd_llsc_wdata_fifo",4), |
---|
| 291 | |
---|
| 292 | r_tgt_cmd_fsm("r_tgt_cmd_fsm"), |
---|
| 293 | |
---|
| 294 | nseg(0), |
---|
[19] | 295 | ncseg(0), |
---|
[2] | 296 | |
---|
| 297 | r_read_fsm("r_read_fsm"), |
---|
| 298 | r_write_fsm("r_write_fsm"), |
---|
| 299 | m_write_to_init_cmd_inst_fifo("m_write_to_init_cmd_inst_fifo",8), |
---|
| 300 | m_write_to_init_cmd_srcid_fifo("m_write_to_init_cmd_srcid_fifo",8), |
---|
| 301 | r_init_rsp_fsm("r_init_rsp_fsm"), |
---|
| 302 | r_cleanup_fsm("r_cleanup_fsm"), |
---|
| 303 | r_llsc_fsm("r_llsc_fsm"), |
---|
| 304 | m_llsc_to_init_cmd_inst_fifo("m_llsc_to_init_cmd_inst_fifo",8), |
---|
| 305 | m_llsc_to_init_cmd_srcid_fifo("m_llsc_to_init_cmd_srcid_fifo",8), |
---|
| 306 | r_ixr_rsp_fsm("r_ixr_rsp_fsm"), |
---|
| 307 | r_xram_rsp_fsm("r_xram_rsp_fsm"), |
---|
| 308 | m_xram_rsp_to_init_cmd_inst_fifo("m_xram_rsp_to_init_cmd_inst_fifo",8), |
---|
| 309 | m_xram_rsp_to_init_cmd_srcid_fifo("m_xram_rsp_to_init_cmd_srcid_fifo",8), |
---|
| 310 | r_ixr_cmd_fsm("r_ixr_cmd_fsm"), |
---|
| 311 | r_tgt_rsp_fsm("r_tgt_rsp_fsm"), |
---|
| 312 | r_init_cmd_fsm("r_init_cmd_fsm"), |
---|
| 313 | r_alloc_dir_fsm("r_alloc_dir_fsm"), |
---|
| 314 | r_alloc_trt_fsm("r_alloc_trt_fsm"), |
---|
| 315 | r_alloc_upt_fsm("r_alloc_upt_fsm") |
---|
| 316 | { |
---|
| 317 | assert(IS_POW_OF_2(nsets)); |
---|
| 318 | assert(IS_POW_OF_2(nwords)); |
---|
| 319 | assert(IS_POW_OF_2(nways)); |
---|
| 320 | assert(nsets); |
---|
| 321 | assert(nwords); |
---|
| 322 | assert(nways); |
---|
| 323 | assert(nsets <= 1024); |
---|
| 324 | assert(nwords <= 32); |
---|
| 325 | assert(nways <= 32); |
---|
| 326 | |
---|
[82] | 327 | // Set the broadcast address with Xmin,Xmax,Ymin,Ymax set to maximum |
---|
| 328 | broadcast_addr = 0x3 | (0x7C1F << (vci_param::N-20)); |
---|
[2] | 329 | |
---|
| 330 | // Get the segments associated to the MemCache |
---|
| 331 | std::list<soclib::common::Segment>::iterator seg; |
---|
| 332 | |
---|
| 333 | for(seg = m_seglist.begin(); seg != m_seglist.end() ; seg++) { |
---|
| 334 | nseg++; |
---|
| 335 | } |
---|
| 336 | for(seg = m_cseglist.begin(); seg != m_cseglist.end() ; seg++) { |
---|
| 337 | ncseg++; |
---|
| 338 | } |
---|
| 339 | |
---|
| 340 | m_seg = new soclib::common::Segment*[nseg]; |
---|
| 341 | size_t i = 0; |
---|
| 342 | for ( seg = m_seglist.begin() ; seg != m_seglist.end() ; seg++ ) { |
---|
| 343 | m_seg[i] = &(*seg); |
---|
| 344 | i++; |
---|
| 345 | } |
---|
| 346 | m_cseg = new soclib::common::Segment*[ncseg]; |
---|
| 347 | i = 0; |
---|
| 348 | for ( seg = m_cseglist.begin() ; seg != m_cseglist.end() ; seg++ ) { |
---|
| 349 | m_cseg[i] = &(*seg); |
---|
| 350 | i++; |
---|
| 351 | } |
---|
| 352 | |
---|
| 353 | // Memory cache allocation & initialisation |
---|
| 354 | m_cache_data = new data_t**[nways]; |
---|
| 355 | for ( size_t i=0 ; i<nways ; ++i ) { |
---|
| 356 | m_cache_data[i] = new data_t*[nsets]; |
---|
| 357 | } |
---|
| 358 | for ( size_t i=0; i<nways; ++i ) { |
---|
| 359 | for ( size_t j=0; j<nsets; ++j ) { |
---|
| 360 | m_cache_data[i][j] = new data_t[nwords]; |
---|
| 361 | for ( size_t k=0; k<nwords; k++){ |
---|
| 362 | m_cache_data[i][j][k]=0; |
---|
| 363 | } |
---|
| 364 | } |
---|
| 365 | } |
---|
| 366 | |
---|
| 367 | // Allocation for IXR_RSP FSM |
---|
| 368 | r_ixr_rsp_to_xram_rsp_rok = new sc_signal<bool>[TRANSACTION_TAB_LINES]; |
---|
| 369 | |
---|
| 370 | // Allocation for XRAM_RSP FSM |
---|
| 371 | r_xram_rsp_victim_data = new sc_signal<data_t>[nwords]; |
---|
| 372 | r_xram_rsp_to_tgt_rsp_data = new sc_signal<data_t>[nwords]; |
---|
| 373 | r_xram_rsp_to_ixr_cmd_data = new sc_signal<data_t>[nwords]; |
---|
| 374 | |
---|
| 375 | // Allocation for READ FSM |
---|
| 376 | r_read_data = new sc_signal<data_t>[nwords]; |
---|
| 377 | r_read_to_tgt_rsp_data = new sc_signal<data_t>[nwords]; |
---|
| 378 | |
---|
| 379 | // Allocation for WRITE FSM |
---|
| 380 | r_write_data = new sc_signal<data_t>[nwords]; |
---|
| 381 | r_write_be = new sc_signal<be_t>[nwords]; |
---|
| 382 | r_write_to_init_cmd_data = new sc_signal<data_t>[nwords]; |
---|
| 383 | r_write_to_init_cmd_we = new sc_signal<bool>[nwords]; |
---|
| 384 | r_write_to_ixr_cmd_data = new sc_signal<data_t>[nwords]; |
---|
| 385 | |
---|
| 386 | // Allocation for LLSC FSM |
---|
| 387 | r_llsc_to_ixr_cmd_data = new sc_signal<data_t>[nwords]; |
---|
| 388 | |
---|
| 389 | |
---|
| 390 | // Simulation |
---|
| 391 | |
---|
| 392 | SC_METHOD(transition); |
---|
| 393 | dont_initialize(); |
---|
| 394 | sensitive << p_clk.pos(); |
---|
| 395 | |
---|
| 396 | SC_METHOD(genMoore); |
---|
| 397 | dont_initialize(); |
---|
| 398 | sensitive << p_clk.neg(); |
---|
| 399 | |
---|
| 400 | } // end constructor |
---|
| 401 | |
---|
| 402 | ///////////////////////////////////////// |
---|
| 403 | // This function prints the statistics |
---|
| 404 | ///////////////////////////////////////// |
---|
| 405 | |
---|
| 406 | tmpl(void)::print_stats() |
---|
| 407 | { |
---|
| 408 | std::cout << "----------------------------------" << std::dec << std::endl; |
---|
| 409 | std::cout << "MEM_CACHE " << m_srcid_ini << " / Time = " << m_cpt_cycles << std::endl |
---|
| 410 | << "- READ RATE = " << (double)m_cpt_read/m_cpt_cycles << std::endl |
---|
| 411 | << "- READ MISS RATE = " << (double)m_cpt_read_miss/m_cpt_read << std::endl |
---|
| 412 | << "- WRITE RATE = " << (double)m_cpt_write/m_cpt_cycles << std::endl |
---|
| 413 | << "- WRITE MISS RATE = " << (double)m_cpt_write_miss/m_cpt_write << std::endl |
---|
| 414 | << "- WRITE BURST LENGTH = " << (double)m_cpt_write_cells/m_cpt_write << std::endl |
---|
| 415 | << "- UPDATE RATE = " << (double)m_cpt_update/m_cpt_cycles << std::endl |
---|
| 416 | << "- UPDATE ARITY = " << (double)m_cpt_update_mult/m_cpt_update << std::endl |
---|
| 417 | << "- INVAL MULTICAST RATE = " << (double)(m_cpt_inval-m_cpt_inval_brdcast)/m_cpt_cycles << std::endl |
---|
| 418 | << "- INVAL MULTICAST ARITY= " << (double)m_cpt_inval_mult/(m_cpt_inval-m_cpt_inval_brdcast) << std::endl |
---|
| 419 | << "- INVAL BROADCAST RATE = " << (double)m_cpt_inval_brdcast/m_cpt_cycles << std::endl |
---|
| 420 | << "- SAVE DIRTY RATE = " << (double)m_cpt_write_dirty/m_cpt_cycles << std::endl |
---|
| 421 | << "- CLEANUP RATE = " << (double)m_cpt_cleanup/m_cpt_cycles << std::endl |
---|
| 422 | << "- LL RATE = " << (double)m_cpt_ll/m_cpt_cycles << std::endl |
---|
| 423 | << "- SC RATE = " << (double)m_cpt_sc/m_cpt_cycles << std::endl; |
---|
| 424 | } |
---|
| 425 | |
---|
| 426 | ///////////////////////////////// |
---|
| 427 | tmpl(/**/)::~VciMemCacheV3() |
---|
| 428 | ///////////////////////////////// |
---|
| 429 | { |
---|
| 430 | for(size_t i=0; i<m_ways ; i++){ |
---|
| 431 | for(size_t j=0; j<m_sets ; j++){ |
---|
| 432 | delete [] m_cache_data[i][j]; |
---|
| 433 | } |
---|
| 434 | } |
---|
| 435 | for(size_t i=0; i<m_ways ; i++){ |
---|
| 436 | delete [] m_cache_data[i]; |
---|
| 437 | } |
---|
| 438 | delete [] m_cache_data; |
---|
| 439 | delete [] m_coherence_table; |
---|
| 440 | |
---|
| 441 | delete [] r_ixr_rsp_to_xram_rsp_rok; |
---|
| 442 | |
---|
| 443 | delete [] r_xram_rsp_victim_data; |
---|
| 444 | delete [] r_xram_rsp_to_tgt_rsp_data; |
---|
| 445 | delete [] r_xram_rsp_to_ixr_cmd_data; |
---|
| 446 | |
---|
| 447 | delete [] r_read_data; |
---|
| 448 | delete [] r_read_to_tgt_rsp_data; |
---|
| 449 | |
---|
| 450 | delete [] r_write_data; |
---|
| 451 | delete [] r_write_be; |
---|
| 452 | delete [] r_write_to_init_cmd_data; |
---|
| 453 | } |
---|
| 454 | |
---|
| 455 | ////////////////////////////////// |
---|
| 456 | tmpl(void)::transition() |
---|
| 457 | ////////////////////////////////// |
---|
| 458 | { |
---|
| 459 | using soclib::common::uint32_log2; |
---|
| 460 | // RESET |
---|
| 461 | if ( ! p_resetn.read() ) { |
---|
| 462 | |
---|
| 463 | // Initializing FSMs |
---|
| 464 | r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 465 | r_tgt_rsp_fsm = TGT_RSP_READ_IDLE; |
---|
| 466 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
| 467 | r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
| 468 | r_read_fsm = READ_IDLE; |
---|
| 469 | r_write_fsm = WRITE_IDLE; |
---|
| 470 | r_llsc_fsm = LLSC_IDLE; |
---|
| 471 | r_cleanup_fsm = CLEANUP_IDLE; |
---|
| 472 | r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 473 | r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 474 | r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 475 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
| 476 | r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 477 | r_ixr_cmd_fsm = IXR_CMD_READ_IDLE; |
---|
| 478 | |
---|
| 479 | // Initializing Tables |
---|
| 480 | m_cache_directory.init(); |
---|
| 481 | m_atomic_tab.init(); |
---|
| 482 | m_transaction_tab.init(); |
---|
| 483 | m_heap_directory.init(); |
---|
| 484 | |
---|
| 485 | // initializing FIFOs and communication Buffers |
---|
| 486 | |
---|
| 487 | m_cmd_read_addr_fifo.init(); |
---|
| 488 | m_cmd_read_length_fifo.init(); |
---|
| 489 | m_cmd_read_srcid_fifo.init(); |
---|
| 490 | m_cmd_read_trdid_fifo.init(); |
---|
| 491 | m_cmd_read_pktid_fifo.init(); |
---|
| 492 | |
---|
| 493 | m_cmd_write_addr_fifo.init(); |
---|
| 494 | m_cmd_write_eop_fifo.init(); |
---|
| 495 | m_cmd_write_srcid_fifo.init(); |
---|
| 496 | m_cmd_write_trdid_fifo.init(); |
---|
| 497 | m_cmd_write_pktid_fifo.init(); |
---|
| 498 | m_cmd_write_data_fifo.init(); |
---|
| 499 | |
---|
| 500 | m_cmd_llsc_addr_fifo.init(); |
---|
| 501 | m_cmd_llsc_srcid_fifo.init(); |
---|
| 502 | m_cmd_llsc_trdid_fifo.init(); |
---|
| 503 | m_cmd_llsc_pktid_fifo.init(); |
---|
| 504 | m_cmd_llsc_wdata_fifo.init(); |
---|
| 505 | m_cmd_llsc_sc_fifo.init(); |
---|
| 506 | |
---|
| 507 | r_read_to_tgt_rsp_req = false; |
---|
| 508 | r_read_to_ixr_cmd_req = false; |
---|
| 509 | |
---|
| 510 | r_write_to_tgt_rsp_req = false; |
---|
| 511 | r_write_to_ixr_cmd_req = false; |
---|
| 512 | r_write_to_init_cmd_multi_req = false; |
---|
| 513 | r_write_to_init_cmd_brdcast_req = false; |
---|
| 514 | r_write_to_init_rsp_req = false; |
---|
| 515 | m_write_to_init_cmd_inst_fifo.init(); |
---|
| 516 | m_write_to_init_cmd_srcid_fifo.init(); |
---|
| 517 | |
---|
| 518 | r_cleanup_to_tgt_rsp_req = false; |
---|
| 519 | |
---|
| 520 | r_init_rsp_to_tgt_rsp_req = false; |
---|
| 521 | |
---|
| 522 | r_llsc_to_tgt_rsp_req = false; |
---|
| 523 | r_llsc_to_ixr_cmd_req = false; |
---|
| 524 | r_llsc_to_init_cmd_multi_req = false; |
---|
| 525 | r_llsc_to_init_cmd_brdcast_req = false; |
---|
| 526 | m_llsc_to_init_cmd_inst_fifo.init(); |
---|
| 527 | m_llsc_to_init_cmd_srcid_fifo.init(); |
---|
| 528 | |
---|
| 529 | for(size_t i=0; i<TRANSACTION_TAB_LINES ; i++){ |
---|
| 530 | r_ixr_rsp_to_xram_rsp_rok[i] = false; |
---|
| 531 | } |
---|
| 532 | |
---|
| 533 | r_xram_rsp_to_tgt_rsp_req = false; |
---|
| 534 | r_xram_rsp_to_init_cmd_multi_req = false; |
---|
| 535 | r_xram_rsp_to_init_cmd_brdcast_req = false; |
---|
| 536 | r_xram_rsp_to_ixr_cmd_req = false; |
---|
| 537 | r_xram_rsp_trt_index = 0; |
---|
| 538 | m_xram_rsp_to_init_cmd_inst_fifo.init(); |
---|
| 539 | m_xram_rsp_to_init_cmd_srcid_fifo.init(); |
---|
| 540 | |
---|
| 541 | r_ixr_cmd_cpt = 0; |
---|
| 542 | |
---|
| 543 | r_copies_limit = 3; |
---|
| 544 | |
---|
| 545 | // Activity counters |
---|
| 546 | m_cpt_cycles = 0; |
---|
| 547 | m_cpt_read = 0; |
---|
| 548 | m_cpt_read_miss = 0; |
---|
| 549 | m_cpt_write = 0; |
---|
| 550 | m_cpt_write_miss = 0; |
---|
| 551 | m_cpt_write_cells = 0; |
---|
| 552 | m_cpt_write_dirty = 0; |
---|
| 553 | m_cpt_update = 0; |
---|
| 554 | m_cpt_update_mult = 0; |
---|
| 555 | m_cpt_inval_brdcast = 0; |
---|
| 556 | m_cpt_inval = 0; |
---|
| 557 | m_cpt_inval_mult = 0; |
---|
| 558 | m_cpt_cleanup = 0; |
---|
| 559 | m_cpt_ll = 0; |
---|
| 560 | m_cpt_sc = 0; |
---|
| 561 | |
---|
| 562 | return; |
---|
| 563 | } |
---|
| 564 | |
---|
| 565 | bool cmd_read_fifo_put = false; |
---|
| 566 | bool cmd_read_fifo_get = false; |
---|
| 567 | |
---|
| 568 | bool cmd_write_fifo_put = false; |
---|
| 569 | bool cmd_write_fifo_get = false; |
---|
| 570 | |
---|
| 571 | bool cmd_llsc_fifo_put = false; |
---|
| 572 | bool cmd_llsc_fifo_get = false; |
---|
| 573 | |
---|
| 574 | bool write_to_init_cmd_fifo_put = false; |
---|
| 575 | bool write_to_init_cmd_fifo_get = false; |
---|
| 576 | bool write_to_init_cmd_fifo_inst = false; |
---|
| 577 | size_t write_to_init_cmd_fifo_srcid = 0; |
---|
| 578 | |
---|
| 579 | bool xram_rsp_to_init_cmd_fifo_put = false; |
---|
| 580 | bool xram_rsp_to_init_cmd_fifo_get = false; |
---|
| 581 | bool xram_rsp_to_init_cmd_fifo_inst = false; |
---|
| 582 | size_t xram_rsp_to_init_cmd_fifo_srcid = 0; |
---|
| 583 | |
---|
| 584 | bool llsc_to_init_cmd_fifo_put = false; |
---|
| 585 | bool llsc_to_init_cmd_fifo_get = false; |
---|
| 586 | bool llsc_to_init_cmd_fifo_inst = false; |
---|
| 587 | size_t llsc_to_init_cmd_fifo_srcid = 0; |
---|
| 588 | |
---|
| 589 | #if DEBUG_VCI_MEM_CACHE |
---|
| 590 | std::cout << "---------------------------------------------" << std::dec << std::endl; |
---|
| 591 | std::cout << "MEM_CACHE " << m_srcid_ini << " ; Time = " << m_cpt_cycles << std::endl |
---|
| 592 | << " - TGT_CMD FSM = " << tgt_cmd_fsm_str[r_tgt_cmd_fsm] << std::endl |
---|
| 593 | << " - TGT_RSP FSM = " << tgt_rsp_fsm_str[r_tgt_rsp_fsm] << std::endl |
---|
| 594 | << " - INIT_CMD FSM = " << init_cmd_fsm_str[r_init_cmd_fsm] << std::endl |
---|
| 595 | << " - INIT_RSP FSM = " << init_rsp_fsm_str[r_init_rsp_fsm] << std::endl |
---|
| 596 | << " - READ FSM = " << read_fsm_str[r_read_fsm] << std::endl |
---|
| 597 | << " - WRITE FSM = " << write_fsm_str[r_write_fsm] << std::endl |
---|
| 598 | << " - LLSC FSM = " << llsc_fsm_str[r_llsc_fsm] << std::endl |
---|
| 599 | << " - CLEANUP FSM = " << cleanup_fsm_str[r_cleanup_fsm] << std::endl |
---|
| 600 | << " - IXR_CMD FSM = " << ixr_cmd_fsm_str[r_ixr_cmd_fsm] << std::endl |
---|
| 601 | << " - IXR_RSP FSM = " << ixr_rsp_fsm_str[r_ixr_rsp_fsm] << std::endl |
---|
| 602 | << " - XRAM_RSP FSM = " << xram_rsp_fsm_str[r_xram_rsp_fsm] << std::endl |
---|
| 603 | << " - ALLOC_DIR FSM = " << alloc_dir_fsm_str[r_alloc_dir_fsm] << std::endl |
---|
| 604 | << " - ALLOC_TRT FSM = " << alloc_trt_fsm_str[r_alloc_trt_fsm] << std::endl |
---|
| 605 | << " - ALLOC_UPT FSM = " << alloc_upt_fsm_str[r_alloc_upt_fsm] << std::endl |
---|
| 606 | << " - ALLOC_HEAP FSM = " << alloc_heap_fsm_str[r_alloc_heap_fsm] << std::endl; |
---|
| 607 | #endif |
---|
| 608 | |
---|
| 609 | |
---|
| 610 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 611 | // TGT_CMD FSM |
---|
| 612 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 613 | // The TGT_CMD_FSM controls the incoming VCI command pakets from the processors |
---|
| 614 | // |
---|
| 615 | // There is 4 types of packets for the m_mem_segment : |
---|
| 616 | // - READ : a READ request has a length of 1 VCI cell. It can be a single word |
---|
| 617 | // or an entire cache line, depending on the PLEN value. |
---|
| 618 | // - WRITE : a WRITE request has a maximum length of 16 cells, and can only |
---|
| 619 | // concern words in a same line. |
---|
| 620 | // - LL : The LL request has a length of 1 cell. |
---|
| 621 | // - SC : The SC request has a length of 1 cell. |
---|
| 622 | // The WDATA field contains the data to write. |
---|
| 623 | // |
---|
| 624 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 625 | |
---|
| 626 | switch ( r_tgt_cmd_fsm.read() ) { |
---|
| 627 | |
---|
| 628 | ////////////////// |
---|
| 629 | case TGT_CMD_IDLE: |
---|
| 630 | { |
---|
| 631 | if ( p_vci_tgt.cmdval ) { |
---|
| 632 | assert( (p_vci_tgt.srcid.read() < m_initiators) |
---|
| 633 | && "VCI_MEM_CACHE error in VCI_MEM_CACHE : The received SRCID is larger than the number of initiators"); |
---|
| 634 | |
---|
| 635 | bool reached = false; |
---|
| 636 | for ( size_t index = 0 ; index < nseg && !reached ; index++) |
---|
| 637 | { |
---|
| 638 | // if ( m_seg[index]->contains((addr_t)(p_vci_tgt.address.read())) ) { |
---|
| 639 | if ( m_seg[index]->contains(p_vci_tgt.address.read()) ) { |
---|
| 640 | reached = true; |
---|
| 641 | r_index = index; |
---|
| 642 | } |
---|
| 643 | } |
---|
| 644 | |
---|
| 645 | |
---|
| 646 | if ( !reached ) |
---|
| 647 | { |
---|
| 648 | std::cout << "VCI_MEM_CACHE Out of segment access in VCI_MEM_CACHE" << std::endl; |
---|
| 649 | std::cout << "Faulty address = " << std::hex << (addr_t)(p_vci_tgt.address.read()) << std::endl; |
---|
| 650 | std::cout << "Faulty initiator = " << std::dec << p_vci_tgt.srcid.read() << std::endl; |
---|
| 651 | exit(0); |
---|
| 652 | } |
---|
| 653 | else if ( p_vci_tgt.cmd.read() == vci_param::CMD_READ ) |
---|
| 654 | { |
---|
| 655 | r_tgt_cmd_fsm = TGT_CMD_READ; |
---|
| 656 | } |
---|
| 657 | else if ( p_vci_tgt.cmd.read() == vci_param::CMD_WRITE ) |
---|
| 658 | { |
---|
| 659 | r_tgt_cmd_fsm = TGT_CMD_WRITE; |
---|
| 660 | } |
---|
| 661 | else if ((p_vci_tgt.cmd.read() == vci_param::CMD_LOCKED_READ) || |
---|
| 662 | (p_vci_tgt.cmd.read() == vci_param::CMD_STORE_COND) ) |
---|
| 663 | { |
---|
| 664 | r_tgt_cmd_fsm = TGT_CMD_ATOMIC; |
---|
| 665 | } |
---|
| 666 | } |
---|
| 667 | break; |
---|
| 668 | } |
---|
| 669 | ////////////////// |
---|
| 670 | case TGT_CMD_READ: |
---|
| 671 | |
---|
| 672 | { |
---|
| 673 | assert(((m_x[(vci_addr_t)p_vci_tgt.address.read()]+(p_vci_tgt.plen.read()>>2))<=16) |
---|
| 674 | && "VCI_MEM_CACHE All read request to the MemCache must stay within a cache line"); |
---|
| 675 | |
---|
| 676 | if ( p_vci_tgt.cmdval && m_cmd_read_addr_fifo.wok() ) { |
---|
| 677 | cmd_read_fifo_put = true; |
---|
| 678 | if ( p_vci_tgt.eop ) r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 679 | else r_tgt_cmd_fsm = TGT_CMD_READ_EOP; |
---|
| 680 | } |
---|
| 681 | break; |
---|
| 682 | } |
---|
| 683 | ////////////////////// |
---|
| 684 | case TGT_CMD_READ_EOP: |
---|
| 685 | { |
---|
| 686 | if ( p_vci_tgt.cmdval && p_vci_tgt.eop ){ |
---|
| 687 | r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 688 | } |
---|
| 689 | break; |
---|
| 690 | } |
---|
| 691 | /////////////////// |
---|
| 692 | case TGT_CMD_WRITE: |
---|
| 693 | { |
---|
| 694 | |
---|
| 695 | if ( p_vci_tgt.cmdval && m_cmd_write_addr_fifo.wok() ) { |
---|
| 696 | cmd_write_fifo_put = true; |
---|
| 697 | if( p_vci_tgt.eop ) r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 698 | |
---|
| 699 | } |
---|
| 700 | break; |
---|
| 701 | } |
---|
| 702 | //////////////////// |
---|
| 703 | case TGT_CMD_ATOMIC: |
---|
| 704 | { |
---|
| 705 | assert(p_vci_tgt.eop && "Memory Cache Error: LL or SC command with length > 1 "); |
---|
| 706 | |
---|
| 707 | if ( p_vci_tgt.cmdval && m_cmd_llsc_addr_fifo.wok() ) { |
---|
| 708 | cmd_llsc_fifo_put = true; |
---|
| 709 | r_tgt_cmd_fsm = TGT_CMD_IDLE; |
---|
| 710 | } |
---|
| 711 | break; |
---|
| 712 | } |
---|
| 713 | } // end switch tgt_cmd_fsm |
---|
| 714 | |
---|
| 715 | ///////////////////////////////////////////////////////////////////////// |
---|
| 716 | // INIT_RSP FSM |
---|
| 717 | ///////////////////////////////////////////////////////////////////////// |
---|
| 718 | // This FSM controls the response to the update or invalidate requests |
---|
| 719 | // sent by the memory cache to the L1 caches : |
---|
| 720 | // |
---|
| 721 | // - update request initiated by the WRITE FSM. |
---|
| 722 | // The FSM decrements the proper entry in the Update/Inval Table. |
---|
| 723 | // It sends a request to the TGT_RSP FSM to complete the pending |
---|
| 724 | // write transaction (acknowledge response to the writer processor), |
---|
| 725 | // and clear the UPT entry when all responses have been received. |
---|
| 726 | // - invalidate request initiated by the XRAM_RSP FSM. |
---|
| 727 | // The FSM decrements the proper entry in the Update/Inval_Table, |
---|
| 728 | // and clear the entry when all responses have been received. |
---|
| 729 | // |
---|
| 730 | // All those response packets are one word, compact |
---|
| 731 | // packets complying with the VCI advanced format. |
---|
| 732 | // The index in the Table is defined in the RTRDID field, and |
---|
| 733 | // the Transaction type is defined in the Update/Inval Table. |
---|
| 734 | ///////////////////////////////////////////////////////////////////// |
---|
| 735 | |
---|
| 736 | switch ( r_init_rsp_fsm.read() ) { |
---|
| 737 | |
---|
| 738 | /////////////////// |
---|
| 739 | case INIT_RSP_IDLE: |
---|
| 740 | { |
---|
| 741 | |
---|
| 742 | if ( p_vci_ini.rspval ) { |
---|
| 743 | |
---|
| 744 | assert ( ( p_vci_ini.rtrdid.read() < m_update_tab.size() ) |
---|
| 745 | && "VCI_MEM_CACHE UPT index too large in VCI response paquet received by memory cache" ); |
---|
| 746 | assert ( p_vci_ini.reop |
---|
| 747 | && "VCI_MEM_CACHE All response packets to update/invalidate requests must be one cell" ); |
---|
| 748 | r_init_rsp_upt_index = p_vci_ini.rtrdid.read(); |
---|
| 749 | r_init_rsp_fsm = INIT_RSP_UPT_LOCK; |
---|
| 750 | } else if( r_write_to_init_rsp_req.read() ){ |
---|
| 751 | r_init_rsp_upt_index = r_write_to_init_rsp_upt_index.read(); |
---|
| 752 | r_write_to_init_rsp_req = false; |
---|
| 753 | r_init_rsp_fsm = INIT_RSP_UPT_LOCK; |
---|
| 754 | } |
---|
| 755 | break; |
---|
| 756 | } |
---|
| 757 | /////////////////////// |
---|
| 758 | case INIT_RSP_UPT_LOCK: // decrement the number of expected responses |
---|
| 759 | { |
---|
| 760 | |
---|
| 761 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_INIT_RSP ) { |
---|
| 762 | size_t count = 0; |
---|
| 763 | bool valid = m_update_tab.decrement(r_init_rsp_upt_index.read(), count); |
---|
| 764 | #ifdef IDEBUG |
---|
| 765 | std::cout << sc_time_stamp() << " " << name() << " INIT_RSP_UPT_LOCK update table : " << std::endl; |
---|
| 766 | m_update_tab.print(); |
---|
| 767 | #endif |
---|
| 768 | assert ( valid |
---|
| 769 | && "VCI_MEM_CACHE Invalid UPT entry in VCI response paquet received by memory cache" ); |
---|
| 770 | |
---|
| 771 | if ( count == 0 ) r_init_rsp_fsm = INIT_RSP_UPT_CLEAR; |
---|
| 772 | else r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
| 773 | } |
---|
| 774 | break; |
---|
| 775 | } |
---|
| 776 | //////////////////////// |
---|
| 777 | case INIT_RSP_UPT_CLEAR: // clear the UPT entry |
---|
| 778 | { |
---|
| 779 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_INIT_RSP ) { |
---|
| 780 | r_init_rsp_srcid = m_update_tab.srcid(r_init_rsp_upt_index.read()); |
---|
| 781 | r_init_rsp_trdid = m_update_tab.trdid(r_init_rsp_upt_index.read()); |
---|
| 782 | r_init_rsp_pktid = m_update_tab.pktid(r_init_rsp_upt_index.read()); |
---|
| 783 | r_init_rsp_nline = m_update_tab.nline(r_init_rsp_upt_index.read()); |
---|
| 784 | bool need_rsp = m_update_tab.need_rsp(r_init_rsp_upt_index.read()); |
---|
| 785 | if ( need_rsp ) r_init_rsp_fsm = INIT_RSP_END; |
---|
| 786 | else r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
| 787 | m_update_tab.clear(r_init_rsp_upt_index.read()); |
---|
| 788 | #ifdef IDEBUG |
---|
| 789 | std::cout << sc_time_stamp() << " " << name() << " INIT_RSP_UPT_CLEAR update table : " << std::endl; |
---|
| 790 | m_update_tab.print(); |
---|
| 791 | #endif |
---|
| 792 | } |
---|
| 793 | break; |
---|
| 794 | } |
---|
| 795 | ////////////////// |
---|
| 796 | case INIT_RSP_END: |
---|
| 797 | { |
---|
| 798 | |
---|
| 799 | if ( !r_init_rsp_to_tgt_rsp_req ) { |
---|
| 800 | r_init_rsp_to_tgt_rsp_req = true; |
---|
| 801 | r_init_rsp_to_tgt_rsp_srcid = r_init_rsp_srcid.read(); |
---|
| 802 | r_init_rsp_to_tgt_rsp_trdid = r_init_rsp_trdid.read(); |
---|
| 803 | r_init_rsp_to_tgt_rsp_pktid = r_init_rsp_pktid.read(); |
---|
| 804 | r_init_rsp_fsm = INIT_RSP_IDLE; |
---|
| 805 | } |
---|
| 806 | break; |
---|
| 807 | } |
---|
| 808 | } // end switch r_init_rsp_fsm |
---|
| 809 | |
---|
| 810 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 811 | // READ FSM |
---|
| 812 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 813 | // The READ FSM controls the read requests sent by processors. |
---|
| 814 | // It takes the lock protecting the cache directory to check the cache line status: |
---|
| 815 | // - In case of HIT, the fsm copies the data (one line, or one single word) |
---|
| 816 | // in the r_read_to_tgt_rsp buffer. It waits if this buffer is not empty. |
---|
| 817 | // The requesting initiator is registered in the cache directory. |
---|
| 818 | // - In case of MISS, the READ fsm takes the lock protecting the transaction tab. |
---|
| 819 | // If a read transaction to the XRAM for this line already exists, |
---|
| 820 | // or if the transaction tab is full, the fsm is stalled. |
---|
| 821 | // If a transaction entry is free, the READ fsm sends a request to the XRAM. |
---|
| 822 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 823 | |
---|
| 824 | switch ( r_read_fsm.read() ) { |
---|
| 825 | |
---|
| 826 | /////////////// |
---|
| 827 | case READ_IDLE: |
---|
| 828 | { |
---|
| 829 | if (m_cmd_read_addr_fifo.rok()) { |
---|
| 830 | m_cpt_read++; |
---|
| 831 | r_read_fsm = READ_DIR_LOCK; |
---|
| 832 | } |
---|
| 833 | break; |
---|
| 834 | } |
---|
| 835 | /////////////////// |
---|
| 836 | case READ_DIR_LOCK: // check directory for hit / miss |
---|
| 837 | { |
---|
| 838 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_READ ) { |
---|
| 839 | size_t way = 0; |
---|
| 840 | DirectoryEntry entry = m_cache_directory.read(m_cmd_read_addr_fifo.read(), way); |
---|
| 841 | #ifdef DDEBUG |
---|
| 842 | std::cout << "In READ_DIR_LOCK printing the entry of address is : " << std::hex << m_cmd_read_addr_fifo.read() << std::endl; |
---|
| 843 | entry.print(); |
---|
| 844 | std::cout << "done" << std::endl; |
---|
| 845 | #endif |
---|
| 846 | |
---|
| 847 | r_read_is_cnt = entry.is_cnt; |
---|
| 848 | r_read_dirty = entry.dirty; |
---|
| 849 | r_read_lock = entry.lock; |
---|
| 850 | r_read_inst = entry.inst; |
---|
| 851 | r_read_tag = entry.tag; |
---|
| 852 | r_read_way = way; |
---|
| 853 | r_read_count = entry.count; |
---|
| 854 | r_read_copy = entry.owner.srcid; |
---|
| 855 | r_read_copy_inst= entry.owner.inst; |
---|
| 856 | r_read_ptr = entry.ptr; |
---|
| 857 | |
---|
| 858 | bool cached_read = (m_cmd_read_trdid_fifo.read() & 0x1); |
---|
| 859 | // In case of hit, the read acces must be registered in the copies bit-vector |
---|
| 860 | if( entry.valid ) { |
---|
| 861 | if(entry.is_cnt || (entry.count == 0) || !cached_read) { // No new entry in the heap |
---|
| 862 | r_read_fsm = READ_DIR_HIT; |
---|
| 863 | } else { |
---|
| 864 | r_read_fsm = READ_HEAP_LOCK; |
---|
| 865 | } |
---|
| 866 | } else { |
---|
| 867 | r_read_fsm = READ_TRT_LOCK; |
---|
| 868 | m_cpt_read_miss++; |
---|
| 869 | } |
---|
| 870 | } |
---|
| 871 | break; |
---|
| 872 | } |
---|
| 873 | ////////////////// |
---|
| 874 | case READ_DIR_HIT: // read hit : update the memory cache |
---|
| 875 | { |
---|
| 876 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_READ ) { |
---|
| 877 | // signals generation |
---|
| 878 | bool inst_read = (m_cmd_read_trdid_fifo.read() & 0x2); |
---|
| 879 | bool cached_read = (m_cmd_read_trdid_fifo.read() & 0x1); |
---|
| 880 | bool is_cnt = r_read_is_cnt.read(); |
---|
| 881 | |
---|
| 882 | // read data in the cache |
---|
| 883 | size_t set = m_y[(vci_addr_t)(m_cmd_read_addr_fifo.read())]; |
---|
| 884 | size_t way = r_read_way.read(); |
---|
| 885 | for ( size_t i=0 ; i<m_words ; i++ ) { |
---|
| 886 | r_read_data[i] = m_cache_data[way][set][i]; |
---|
| 887 | } |
---|
| 888 | |
---|
| 889 | // update the cache directory (for the copies) |
---|
| 890 | DirectoryEntry entry; |
---|
| 891 | entry.valid = true; |
---|
| 892 | entry.is_cnt = is_cnt; |
---|
| 893 | entry.dirty = r_read_dirty.read(); |
---|
| 894 | entry.tag = r_read_tag.read(); |
---|
| 895 | entry.lock = r_read_lock.read(); |
---|
[57] | 896 | entry.ptr = r_read_ptr.read(); |
---|
[2] | 897 | if(cached_read){ // Cached read, we update the copy |
---|
| 898 | if(!is_cnt){ // Not counter mode |
---|
| 899 | entry.owner.srcid = m_cmd_read_srcid_fifo.read(); |
---|
| 900 | entry.owner.inst = inst_read; |
---|
| 901 | entry.inst = r_read_inst.read() || inst_read; |
---|
| 902 | entry.count = r_read_count.read() + 1; |
---|
| 903 | } else { // Counter mode |
---|
| 904 | entry.owner.srcid = 0; |
---|
| 905 | entry.owner.inst = false; |
---|
| 906 | entry.inst = r_read_inst.read() || inst_read; |
---|
| 907 | entry.count = r_read_count.read() + 1; |
---|
| 908 | } |
---|
| 909 | } else { // Uncached read |
---|
| 910 | entry.owner.srcid = r_read_copy.read(); |
---|
| 911 | entry.owner.inst = r_read_copy_inst.read(); |
---|
| 912 | entry.inst = r_read_inst.read(); |
---|
| 913 | entry.count = r_read_count.read(); |
---|
| 914 | } |
---|
| 915 | #ifdef DDEBUG |
---|
| 916 | std::cout << "In READ_DIR_HIT printing the entry of address is : " << std::endl; |
---|
| 917 | entry.print(); |
---|
| 918 | std::cout << "done" << std::endl; |
---|
| 919 | #endif |
---|
| 920 | |
---|
| 921 | m_cache_directory.write(set, way, entry); |
---|
| 922 | r_read_fsm = READ_RSP; |
---|
| 923 | } |
---|
| 924 | break; |
---|
| 925 | } |
---|
| 926 | ////////////// |
---|
| 927 | case READ_HEAP_LOCK: |
---|
| 928 | { |
---|
| 929 | if( r_alloc_heap_fsm.read() == ALLOC_HEAP_READ ) { |
---|
| 930 | bool inst_read = (m_cmd_read_trdid_fifo.read() & 0x2); |
---|
| 931 | bool is_cnt = (r_read_count.read() >= r_copies_limit.read()) || m_heap_directory.is_full(); |
---|
| 932 | // read data in the cache |
---|
| 933 | size_t set = m_y[(vci_addr_t)(m_cmd_read_addr_fifo.read())]; |
---|
| 934 | size_t way = r_read_way.read(); |
---|
| 935 | for ( size_t i=0 ; i<m_words ; i++ ) { |
---|
| 936 | r_read_data[i] = m_cache_data[way][set][i]; |
---|
| 937 | } |
---|
| 938 | |
---|
| 939 | // update the cache directory (for the copies) |
---|
| 940 | DirectoryEntry entry; |
---|
| 941 | entry.valid = true; |
---|
| 942 | entry.is_cnt = is_cnt; // when we reach the limit of copies or the heap is full |
---|
| 943 | entry.dirty = r_read_dirty.read(); |
---|
| 944 | entry.tag = r_read_tag.read(); |
---|
| 945 | entry.lock = r_read_lock.read(); |
---|
| 946 | if(!is_cnt){ // Not counter mode |
---|
| 947 | entry.owner.srcid = r_read_copy.read(); |
---|
| 948 | entry.owner.inst = r_read_copy_inst.read(); |
---|
| 949 | entry.inst = r_read_inst.read() || inst_read; |
---|
| 950 | entry.count = r_read_count.read() + 1; |
---|
| 951 | entry.ptr = m_heap_directory.next_free_ptr(); |
---|
| 952 | } else { // Counter mode |
---|
| 953 | entry.owner.srcid = 0; |
---|
| 954 | entry.owner.inst = false; |
---|
| 955 | entry.inst = r_read_inst.read() || inst_read; |
---|
| 956 | entry.count = r_read_count.read() + 1; |
---|
| 957 | entry.ptr = 0; |
---|
| 958 | } |
---|
| 959 | #ifdef DDEBUG |
---|
| 960 | std::cout << "In READ_HEAP_LOCK printing the entry of address is : " << std::endl; |
---|
| 961 | entry.print(); |
---|
| 962 | std::cout << "done" << std::endl; |
---|
| 963 | #endif |
---|
| 964 | |
---|
| 965 | m_cache_directory.write(set, way, entry); |
---|
| 966 | |
---|
| 967 | if(!is_cnt){ |
---|
| 968 | HeapEntry free_heap_entry = m_heap_directory.next_free_entry(); |
---|
| 969 | r_read_next_ptr = free_heap_entry.next; |
---|
| 970 | if( free_heap_entry.next == m_heap_directory.next_free_ptr() ) { // Last free heap entry |
---|
| 971 | r_read_last_free = true; |
---|
| 972 | } else { |
---|
| 973 | r_read_last_free = false; |
---|
| 974 | } |
---|
| 975 | r_read_fsm = READ_HEAP_WRITE; // we add an entry in the list of copies |
---|
| 976 | } else { |
---|
| 977 | if(r_read_count.read()>1) { // else there is no list of copies... |
---|
| 978 | HeapEntry next_entry = m_heap_directory.read(r_read_ptr.read()); |
---|
| 979 | r_read_next_ptr = m_heap_directory.next_free_ptr(); |
---|
| 980 | m_heap_directory.write_free_ptr(r_read_ptr.read()); |
---|
| 981 | if( next_entry.next == r_read_ptr.read() ) { // The last list member |
---|
| 982 | r_read_fsm = READ_HEAP_LAST; // we erase the list of copies (counter mode) |
---|
| 983 | } else { // Not the end of the list |
---|
| 984 | r_read_ptr = next_entry.next; |
---|
| 985 | r_read_fsm = READ_HEAP_ERASE; // we erase the list of copies (counter mode) |
---|
| 986 | } |
---|
| 987 | } else { |
---|
| 988 | r_read_fsm = READ_RSP; |
---|
| 989 | } |
---|
| 990 | } |
---|
| 991 | } |
---|
| 992 | break; |
---|
| 993 | } |
---|
| 994 | ////////////// |
---|
| 995 | case READ_HEAP_WRITE: |
---|
| 996 | { |
---|
| 997 | if(r_alloc_heap_fsm.read() == ALLOC_HEAP_READ){ |
---|
| 998 | bool inst_read = (m_cmd_read_trdid_fifo.read() & 0x2); |
---|
| 999 | HeapEntry new_heap_entry; |
---|
| 1000 | new_heap_entry.owner.srcid = m_cmd_read_srcid_fifo.read(); |
---|
| 1001 | new_heap_entry.owner.inst = inst_read; |
---|
| 1002 | if(r_read_count.read() == 1){ // creation of a new list |
---|
| 1003 | new_heap_entry.next = m_heap_directory.next_free_ptr(); |
---|
| 1004 | } else { // it is an insertion |
---|
| 1005 | new_heap_entry.next = r_read_ptr.read(); |
---|
| 1006 | } |
---|
| 1007 | m_heap_directory.write_free_entry(new_heap_entry); |
---|
| 1008 | m_heap_directory.write_free_ptr(r_read_next_ptr.read()); |
---|
| 1009 | if(r_read_last_free.read()) { |
---|
| 1010 | m_heap_directory.set_full(); |
---|
| 1011 | } |
---|
| 1012 | |
---|
| 1013 | r_read_fsm = READ_RSP; |
---|
| 1014 | } else { |
---|
| 1015 | assert(false && "MEMCACHE Error : Bad HEAP allocation"); |
---|
| 1016 | } |
---|
| 1017 | break; |
---|
| 1018 | } |
---|
| 1019 | ////////////// |
---|
| 1020 | case READ_HEAP_ERASE: |
---|
| 1021 | { |
---|
| 1022 | if(r_alloc_heap_fsm.read() == ALLOC_HEAP_READ){ |
---|
| 1023 | HeapEntry next_entry = m_heap_directory.read(r_read_ptr.read()); |
---|
| 1024 | if( next_entry.next == r_read_ptr.read() ){ |
---|
| 1025 | r_read_fsm = READ_HEAP_LAST; |
---|
| 1026 | } else { |
---|
| 1027 | r_read_ptr = next_entry.next; |
---|
| 1028 | r_read_fsm = READ_HEAP_ERASE; |
---|
| 1029 | } |
---|
| 1030 | } else { |
---|
| 1031 | assert(false && "MEMCACHE Error : Bad HEAP allocation"); |
---|
| 1032 | } |
---|
| 1033 | break; |
---|
| 1034 | } |
---|
| 1035 | ////////////// |
---|
| 1036 | case READ_HEAP_LAST: |
---|
| 1037 | { |
---|
| 1038 | if(r_alloc_heap_fsm.read() == ALLOC_HEAP_READ){ |
---|
| 1039 | HeapEntry last_entry; |
---|
| 1040 | last_entry.owner.srcid = 0; |
---|
| 1041 | last_entry.owner.inst = false; |
---|
| 1042 | if(m_heap_directory.is_full()){ |
---|
| 1043 | last_entry.next = r_read_ptr.read(); |
---|
| 1044 | m_heap_directory.unset_full(); |
---|
| 1045 | } else { |
---|
| 1046 | last_entry.next = r_read_next_ptr.read(); |
---|
| 1047 | } |
---|
| 1048 | m_heap_directory.write(r_read_ptr.read(),last_entry); |
---|
| 1049 | r_read_fsm = READ_RSP; |
---|
| 1050 | } else { |
---|
| 1051 | assert(false && "MEMCACHE Error : Bad HEAP allocation"); |
---|
| 1052 | } |
---|
| 1053 | break; |
---|
| 1054 | } |
---|
| 1055 | ////////////// |
---|
| 1056 | case READ_RSP: // request the TGT_RSP FSM to return data |
---|
| 1057 | { |
---|
| 1058 | if( !r_read_to_tgt_rsp_req ) { |
---|
| 1059 | for ( size_t i=0 ; i<m_words ; i++ ) { |
---|
| 1060 | r_read_to_tgt_rsp_data[i] = r_read_data[i]; |
---|
| 1061 | } |
---|
| 1062 | r_read_to_tgt_rsp_word = m_x[(vci_addr_t)m_cmd_read_addr_fifo.read()]; |
---|
| 1063 | r_read_to_tgt_rsp_length = m_cmd_read_length_fifo.read(); |
---|
| 1064 | cmd_read_fifo_get = true; |
---|
| 1065 | r_read_to_tgt_rsp_req = true; |
---|
| 1066 | r_read_to_tgt_rsp_srcid = m_cmd_read_srcid_fifo.read(); |
---|
| 1067 | r_read_to_tgt_rsp_trdid = m_cmd_read_trdid_fifo.read(); |
---|
| 1068 | r_read_to_tgt_rsp_pktid = m_cmd_read_pktid_fifo.read(); |
---|
| 1069 | r_read_fsm = READ_IDLE; |
---|
| 1070 | } |
---|
| 1071 | break; |
---|
| 1072 | } |
---|
| 1073 | /////////////////// |
---|
| 1074 | case READ_TRT_LOCK: // read miss : check the Transaction Table |
---|
| 1075 | { |
---|
| 1076 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_READ ) { |
---|
| 1077 | #ifdef TDEBUG |
---|
| 1078 | std::cout << sc_time_stamp() << " " << name() << " READ_TRT_LOCK " << std::endl; |
---|
| 1079 | #endif |
---|
| 1080 | size_t index = 0; |
---|
| 1081 | bool hit_read = m_transaction_tab.hit_read(m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())], index); |
---|
| 1082 | bool hit_write = m_transaction_tab.hit_write(m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())]); |
---|
| 1083 | bool wok = !m_transaction_tab.full(index); |
---|
| 1084 | if( hit_read || !wok || hit_write ) { // missing line already requested or no space |
---|
| 1085 | r_read_fsm = READ_IDLE; |
---|
| 1086 | } else { // missing line is requested to the XRAM |
---|
| 1087 | r_read_trt_index = index; |
---|
| 1088 | r_read_fsm = READ_TRT_SET; |
---|
| 1089 | } |
---|
| 1090 | } |
---|
| 1091 | break; |
---|
| 1092 | } |
---|
| 1093 | ////////////////// |
---|
| 1094 | case READ_TRT_SET: |
---|
| 1095 | { |
---|
| 1096 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_READ ) { |
---|
| 1097 | m_transaction_tab.set(r_read_trt_index.read(), |
---|
| 1098 | true, |
---|
| 1099 | m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())], |
---|
| 1100 | m_cmd_read_srcid_fifo.read(), |
---|
| 1101 | m_cmd_read_trdid_fifo.read(), |
---|
| 1102 | m_cmd_read_pktid_fifo.read(), |
---|
| 1103 | true, |
---|
| 1104 | m_cmd_read_length_fifo.read(), |
---|
| 1105 | m_x[(vci_addr_t)(m_cmd_read_addr_fifo.read())], |
---|
| 1106 | std::vector<be_t>(m_words,0), |
---|
| 1107 | std::vector<data_t>(m_words,0)); |
---|
| 1108 | #ifdef TDEBUG |
---|
| 1109 | std::cout << sc_time_stamp() << " " << name() << " READ_TRT_SET transaction table : " << std::endl; |
---|
| 1110 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1111 | m_transaction_tab.print(i); |
---|
| 1112 | #endif |
---|
| 1113 | |
---|
| 1114 | r_read_fsm = READ_XRAM_REQ; |
---|
| 1115 | } |
---|
| 1116 | break; |
---|
| 1117 | } |
---|
| 1118 | ///////////////////// |
---|
| 1119 | case READ_XRAM_REQ: |
---|
| 1120 | { |
---|
| 1121 | if( !r_read_to_ixr_cmd_req ) { |
---|
| 1122 | cmd_read_fifo_get = true; |
---|
| 1123 | r_read_to_ixr_cmd_req = true; |
---|
| 1124 | r_read_to_ixr_cmd_nline = m_nline[(vci_addr_t)(m_cmd_read_addr_fifo.read())]; |
---|
| 1125 | r_read_to_ixr_cmd_trdid = r_read_trt_index.read(); |
---|
| 1126 | r_read_fsm = READ_IDLE; |
---|
| 1127 | } |
---|
| 1128 | break; |
---|
| 1129 | } |
---|
| 1130 | } // end switch read_fsm |
---|
| 1131 | |
---|
| 1132 | /////////////////////////////////////////////////////////////////////////////////// |
---|
| 1133 | // WRITE FSM |
---|
| 1134 | /////////////////////////////////////////////////////////////////////////////////// |
---|
| 1135 | // The WRITE FSM handles the write bursts sent by the processors. |
---|
| 1136 | // All addresses in a burst must be in the same cache line. |
---|
| 1137 | // A complete write burst is consumed in the FIFO & copied to a local buffer. |
---|
| 1138 | // Then the FSM takes the lock protecting the cache directory, to check |
---|
| 1139 | // if the line is in the cache. |
---|
| 1140 | // |
---|
| 1141 | // - In case of HIT, the cache is updated. |
---|
| 1142 | // If there is no other copy, an acknowledge response is immediately |
---|
| 1143 | // returned to the writing processor. |
---|
| 1144 | // if the data is cached by other processoris, the FSM takes the lock |
---|
| 1145 | // protecting the Update Table (UPT) to register this update transaction. |
---|
| 1146 | // If the UPT is full, it releases the lock and waits. Then, it sends |
---|
| 1147 | // a multi-update request to all owners of the line (but the writer), |
---|
| 1148 | // through the INIT_CMD FSM. In case of multi-update transaction, the WRITE FSM |
---|
| 1149 | // does not respond to the writing processor, as this response will be sent by |
---|
| 1150 | // the INIT_RSP FSM when all update responses have been received. |
---|
| 1151 | // |
---|
| 1152 | // - In case of MISS, the WRITE FSM takes the lock protecting the transaction |
---|
| 1153 | // table (TRT). If a read transaction to the XRAM for this line already exists, |
---|
| 1154 | // it writes in the TRT (write buffer). Otherwise, if a TRT entry is free, |
---|
| 1155 | // the WRITE FSM register a new transaction in TRT, and sends a read line request |
---|
| 1156 | // to the XRAM. If the TRT is full, it releases the lock, and waits. |
---|
| 1157 | // Finally, the WRITE FSM returns an aknowledge response to the writing processor. |
---|
| 1158 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 1159 | |
---|
| 1160 | switch ( r_write_fsm.read() ) { |
---|
| 1161 | |
---|
| 1162 | //////////////// |
---|
| 1163 | case WRITE_IDLE: // copy first word of a write burst in local buffer |
---|
| 1164 | { |
---|
| 1165 | if ( m_cmd_write_addr_fifo.rok()) { |
---|
| 1166 | m_cpt_write++; |
---|
| 1167 | m_cpt_write_cells++; |
---|
| 1168 | // consume a word in the FIFO & write it in the local buffer |
---|
| 1169 | cmd_write_fifo_get = true; |
---|
| 1170 | size_t index = m_x[(vci_addr_t)(m_cmd_write_addr_fifo.read())]; |
---|
| 1171 | r_write_address = (addr_t)(m_cmd_write_addr_fifo.read()); |
---|
| 1172 | r_write_word_index = index; |
---|
| 1173 | r_write_word_count = 1; |
---|
| 1174 | r_write_data[index] = m_cmd_write_data_fifo.read(); |
---|
| 1175 | r_write_srcid = m_cmd_write_srcid_fifo.read(); |
---|
| 1176 | r_write_trdid = m_cmd_write_trdid_fifo.read(); |
---|
| 1177 | r_write_pktid = m_cmd_write_pktid_fifo.read(); |
---|
| 1178 | |
---|
| 1179 | // the be field must be set for all words |
---|
| 1180 | for ( size_t i=0 ; i<m_words ; i++ ) { |
---|
| 1181 | if ( i == index ) r_write_be[i] = m_cmd_write_be_fifo.read(); |
---|
| 1182 | else r_write_be[i] = 0x0; |
---|
| 1183 | } |
---|
| 1184 | if( !((m_cmd_write_be_fifo.read() == 0x0)||(m_cmd_write_be_fifo.read() == 0xF)) ) |
---|
| 1185 | r_write_byte=true; |
---|
| 1186 | else r_write_byte=false; |
---|
| 1187 | |
---|
| 1188 | if( m_cmd_write_eop_fifo.read() ) r_write_fsm = WRITE_DIR_LOCK; |
---|
| 1189 | else r_write_fsm = WRITE_NEXT; |
---|
| 1190 | } |
---|
| 1191 | break; |
---|
| 1192 | } |
---|
| 1193 | //////////////// |
---|
| 1194 | case WRITE_NEXT: // copy next word of a write burst in local buffer |
---|
| 1195 | { |
---|
| 1196 | if ( m_cmd_write_addr_fifo.rok() ) { |
---|
| 1197 | m_cpt_write_cells++; |
---|
| 1198 | |
---|
| 1199 | // check that the next word is in the same cache line |
---|
| 1200 | assert( (m_nline[(vci_addr_t)(r_write_address.read())] == m_nline[(vci_addr_t)(m_cmd_write_addr_fifo.read())]) |
---|
| 1201 | && "VCI_MEM_CACHE write error in vci_mem_cache : write burst over a line" ); |
---|
| 1202 | // consume a word in the FIFO & write it in the local buffer |
---|
| 1203 | cmd_write_fifo_get=true; |
---|
| 1204 | size_t index = r_write_word_index.read() + r_write_word_count.read(); |
---|
| 1205 | r_write_be[index] = m_cmd_write_be_fifo.read(); |
---|
| 1206 | r_write_data[index] = m_cmd_write_data_fifo.read(); |
---|
| 1207 | r_write_word_count = r_write_word_count.read() + 1; |
---|
| 1208 | if( !((m_cmd_write_be_fifo.read() == 0x0)||(m_cmd_write_be_fifo.read() == 0xF)) ) |
---|
| 1209 | r_write_byte=true; |
---|
| 1210 | if ( m_cmd_write_eop_fifo.read() ) r_write_fsm = WRITE_DIR_LOCK; |
---|
| 1211 | } |
---|
| 1212 | break; |
---|
| 1213 | } |
---|
| 1214 | //////////////////// |
---|
| 1215 | case WRITE_DIR_LOCK: // access directory to check hit/miss |
---|
| 1216 | { |
---|
| 1217 | if ( r_alloc_dir_fsm.read() == ALLOC_DIR_WRITE ) { |
---|
| 1218 | size_t way = 0; |
---|
| 1219 | DirectoryEntry entry(m_cache_directory.read(r_write_address.read(), way)); |
---|
| 1220 | |
---|
| 1221 | // copy directory entry in local buffers in case of hit |
---|
| 1222 | if ( entry.valid ) { |
---|
| 1223 | r_write_is_cnt = entry.is_cnt; |
---|
| 1224 | r_write_lock = entry.lock; |
---|
| 1225 | r_write_inst = entry.inst; |
---|
| 1226 | r_write_tag = entry.tag; |
---|
| 1227 | r_write_copy = entry.owner.srcid; |
---|
| 1228 | r_write_copy_inst = entry.owner.inst; |
---|
| 1229 | r_write_count = entry.count; |
---|
| 1230 | r_write_ptr = entry.ptr; |
---|
| 1231 | r_write_way = way; |
---|
| 1232 | |
---|
| 1233 | bool owner = (entry.owner.srcid==r_write_srcid.read()) && !entry.owner.inst; |
---|
| 1234 | bool no_update = (entry.count==0) || ( owner && (entry.count==1)); |
---|
| 1235 | if((entry.is_cnt && entry.count) || |
---|
| 1236 | entry.inst){ |
---|
| 1237 | r_write_fsm = WRITE_DIR_HIT_READ; |
---|
| 1238 | } else { |
---|
| 1239 | if(r_write_byte.read()) |
---|
| 1240 | r_write_fsm = WRITE_DIR_HIT_READ; |
---|
| 1241 | else{ |
---|
| 1242 | if( no_update) r_write_fsm = WRITE_DIR_HIT_RSP; |
---|
| 1243 | else r_write_fsm = WRITE_DIR_HIT; |
---|
| 1244 | } |
---|
| 1245 | } |
---|
| 1246 | } else { |
---|
| 1247 | r_write_fsm = WRITE_TRT_LOCK; |
---|
| 1248 | m_cpt_write_miss++; |
---|
| 1249 | } |
---|
| 1250 | } |
---|
| 1251 | break; |
---|
| 1252 | } |
---|
| 1253 | /////////////////// |
---|
| 1254 | case WRITE_DIR_HIT_READ: // read the cache and complete the buffer (data, when be!=0xF) |
---|
| 1255 | { |
---|
| 1256 | // update local buffer |
---|
| 1257 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1258 | size_t way = r_write_way.read(); |
---|
| 1259 | for(size_t i=0 ; i<m_words ; i++) { |
---|
| 1260 | data_t mask = 0; |
---|
| 1261 | if (r_write_be[i].read() & 0x1) mask = mask | 0x000000FF; |
---|
| 1262 | if (r_write_be[i].read() & 0x2) mask = mask | 0x0000FF00; |
---|
| 1263 | if (r_write_be[i].read() & 0x4) mask = mask | 0x00FF0000; |
---|
| 1264 | if (r_write_be[i].read() & 0x8) mask = mask | 0xFF000000; |
---|
| 1265 | if(r_write_be[i].read()||r_write_is_cnt.read()||r_write_inst.read()) { // complete only if mask is not null (for energy consumption) |
---|
| 1266 | r_write_data[i] = (r_write_data[i].read() & mask) | |
---|
| 1267 | (m_cache_data[way][set][i] & ~mask); |
---|
| 1268 | } |
---|
| 1269 | } // end for |
---|
| 1270 | |
---|
| 1271 | bool owner = (r_write_copy.read()==r_write_srcid.read()) && !r_write_copy_inst.read(); |
---|
| 1272 | bool no_update = (r_write_count.read()==0) || ( owner && (r_write_count.read()==1)); |
---|
| 1273 | if((r_write_is_cnt.read() && r_write_count.read()) || |
---|
| 1274 | r_write_inst.read()){ |
---|
| 1275 | r_write_fsm = WRITE_TRT_WRITE_LOCK; |
---|
| 1276 | } else { |
---|
| 1277 | if( no_update ) r_write_fsm = WRITE_DIR_HIT_RSP; |
---|
| 1278 | else r_write_fsm = WRITE_DIR_HIT; |
---|
| 1279 | } |
---|
| 1280 | break; |
---|
| 1281 | } |
---|
| 1282 | /////////////////// |
---|
| 1283 | case WRITE_DIR_HIT: // update the cache (data & dirty bit) |
---|
| 1284 | { |
---|
| 1285 | // update directory with Dirty bit |
---|
| 1286 | DirectoryEntry entry; |
---|
| 1287 | entry.valid = true; |
---|
| 1288 | entry.dirty = true; |
---|
| 1289 | entry.tag = r_write_tag.read(); |
---|
| 1290 | entry.is_cnt = r_write_is_cnt.read(); |
---|
| 1291 | entry.lock = r_write_lock.read(); |
---|
| 1292 | entry.inst = r_write_inst.read(); |
---|
| 1293 | entry.owner.srcid = r_write_copy.read(); |
---|
| 1294 | entry.owner.inst = r_write_copy_inst.read(); |
---|
| 1295 | entry.count = r_write_count.read(); |
---|
| 1296 | entry.ptr = r_write_ptr.read(); |
---|
| 1297 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1298 | size_t way = r_write_way.read(); |
---|
| 1299 | m_cache_directory.write(set, way, entry); |
---|
| 1300 | |
---|
| 1301 | bool owner = (r_write_copy.read()==r_write_srcid.read()) && !r_write_copy_inst.read(); |
---|
| 1302 | |
---|
| 1303 | size_t count_signal = r_write_count.read(); |
---|
| 1304 | if(owner){ |
---|
| 1305 | count_signal = count_signal - 1; |
---|
| 1306 | } |
---|
| 1307 | r_write_count = count_signal; |
---|
| 1308 | r_write_to_dec = false; |
---|
| 1309 | |
---|
[7] | 1310 | if( !r_write_to_init_cmd_multi_req.read() && |
---|
| 1311 | !r_write_to_init_cmd_brdcast_req.read() ) |
---|
| 1312 | r_write_fsm = WRITE_UPT_LOCK; |
---|
| 1313 | else |
---|
| 1314 | r_write_fsm = WRITE_WAIT; |
---|
[2] | 1315 | break; |
---|
| 1316 | } |
---|
| 1317 | /////////////////// |
---|
| 1318 | case WRITE_DIR_HIT_RSP: // update the cache (data & dirty bit) no update |
---|
| 1319 | { |
---|
| 1320 | // update directory with Dirty bit |
---|
| 1321 | DirectoryEntry entry; |
---|
| 1322 | entry.valid = true; |
---|
| 1323 | entry.dirty = true; |
---|
| 1324 | entry.tag = r_write_tag.read(); |
---|
| 1325 | entry.is_cnt = r_write_is_cnt.read(); |
---|
| 1326 | entry.lock = r_write_lock.read(); |
---|
| 1327 | entry.inst = r_write_inst.read(); |
---|
| 1328 | entry.owner.srcid = r_write_copy.read(); |
---|
| 1329 | entry.owner.inst = r_write_copy_inst.read(); |
---|
| 1330 | entry.count = r_write_count.read(); |
---|
| 1331 | entry.ptr = r_write_ptr.read(); |
---|
| 1332 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1333 | size_t way = r_write_way.read(); |
---|
| 1334 | m_cache_directory.write(set, way, entry); |
---|
| 1335 | |
---|
| 1336 | bool owner = (r_write_copy.read()==r_write_srcid.read()) && !r_write_copy_inst.read(); |
---|
| 1337 | |
---|
| 1338 | // write data in cache |
---|
| 1339 | for(size_t i=0 ; i<m_words ; i++) { |
---|
| 1340 | if ( r_write_be[i].read() ) { |
---|
| 1341 | m_cache_data[way][set][i] = r_write_data[i].read(); |
---|
| 1342 | } |
---|
| 1343 | } // end for |
---|
| 1344 | |
---|
| 1345 | if ( !r_write_to_tgt_rsp_req.read() ) { |
---|
| 1346 | r_write_to_tgt_rsp_req = true; |
---|
| 1347 | r_write_to_tgt_rsp_srcid = r_write_srcid.read(); |
---|
| 1348 | r_write_to_tgt_rsp_trdid = r_write_trdid.read(); |
---|
| 1349 | r_write_to_tgt_rsp_pktid = r_write_pktid.read(); |
---|
| 1350 | r_write_fsm = WRITE_IDLE; |
---|
| 1351 | } else { |
---|
| 1352 | r_write_fsm = WRITE_RSP; |
---|
| 1353 | } |
---|
| 1354 | break; |
---|
| 1355 | } |
---|
| 1356 | ///////////////////// |
---|
| 1357 | case WRITE_UPT_LOCK: // Try to register the request in Update Table |
---|
| 1358 | { |
---|
| 1359 | |
---|
| 1360 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_WRITE ) { |
---|
| 1361 | bool wok = false; |
---|
| 1362 | size_t index = 0; |
---|
| 1363 | size_t srcid = r_write_srcid.read(); |
---|
| 1364 | size_t trdid = r_write_trdid.read(); |
---|
| 1365 | size_t pktid = r_write_pktid.read(); |
---|
| 1366 | addr_t nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1367 | size_t nb_copies = r_write_count.read(); |
---|
| 1368 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1369 | size_t way = r_write_way.read(); |
---|
| 1370 | |
---|
| 1371 | wok =m_update_tab.set(true, // it's an update transaction |
---|
| 1372 | false, // it's not a broadcast |
---|
| 1373 | true, // it needs a response |
---|
| 1374 | srcid, |
---|
| 1375 | trdid, |
---|
| 1376 | pktid, |
---|
| 1377 | nline, |
---|
| 1378 | nb_copies, |
---|
| 1379 | index); |
---|
| 1380 | if(wok){ |
---|
| 1381 | // write data in cache |
---|
| 1382 | for(size_t i=0 ; i<m_words ; i++) { |
---|
| 1383 | if ( r_write_be[i].read() ) { |
---|
| 1384 | m_cache_data[way][set][i] = r_write_data[i].read(); |
---|
| 1385 | } |
---|
| 1386 | } // end for |
---|
| 1387 | } |
---|
| 1388 | #ifdef IDEBUG |
---|
| 1389 | if(wok){ |
---|
| 1390 | std::cout << sc_time_stamp() << " " << name() << " WRITE_UPT_LOCK update table : " << std::endl; |
---|
| 1391 | m_update_tab.print(); |
---|
| 1392 | } |
---|
| 1393 | #endif |
---|
| 1394 | r_write_upt_index = index; |
---|
| 1395 | // releases the lock protecting the Update Table and the Directory if no entry... |
---|
| 1396 | if ( wok ) r_write_fsm = WRITE_HEAP_LOCK; |
---|
| 1397 | else r_write_fsm = WRITE_WAIT; |
---|
| 1398 | } |
---|
| 1399 | break; |
---|
| 1400 | } |
---|
| 1401 | ////////////////// |
---|
| 1402 | case WRITE_HEAP_LOCK: |
---|
| 1403 | { |
---|
| 1404 | if( r_alloc_heap_fsm.read() == ALLOC_HEAP_WRITE ){ |
---|
| 1405 | r_write_fsm = WRITE_UPT_REQ; |
---|
| 1406 | } |
---|
| 1407 | break; |
---|
| 1408 | } |
---|
| 1409 | ////////////////// |
---|
| 1410 | case WRITE_UPT_REQ: |
---|
| 1411 | { |
---|
| 1412 | assert( (r_alloc_heap_fsm.read() == ALLOC_HEAP_WRITE) && |
---|
| 1413 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 1414 | if( !r_write_to_init_cmd_multi_req.read() && |
---|
| 1415 | !r_write_to_init_cmd_brdcast_req.read() ){ |
---|
| 1416 | r_write_to_init_cmd_brdcast_req = false; |
---|
| 1417 | r_write_to_init_cmd_trdid = r_write_upt_index.read(); |
---|
| 1418 | r_write_to_init_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1419 | r_write_to_init_cmd_index = r_write_word_index.read(); |
---|
| 1420 | r_write_to_init_cmd_count = r_write_word_count.read(); |
---|
| 1421 | |
---|
| 1422 | for(size_t i=0; i<m_words ; i++){ |
---|
| 1423 | if(r_write_be[i].read()) r_write_to_init_cmd_we[i]=true; |
---|
| 1424 | else r_write_to_init_cmd_we[i]=false; |
---|
| 1425 | } |
---|
| 1426 | |
---|
| 1427 | size_t min = r_write_word_index.read(); |
---|
| 1428 | size_t max = r_write_word_index.read() + r_write_word_count.read(); |
---|
| 1429 | for (size_t i=min ; i<max ; i++) { |
---|
| 1430 | r_write_to_init_cmd_data[i] = r_write_data[i]; |
---|
| 1431 | } |
---|
| 1432 | |
---|
| 1433 | if( r_write_copy.read() != r_write_srcid.read() ) { |
---|
| 1434 | // We put the first copy in the fifo |
---|
| 1435 | write_to_init_cmd_fifo_put = true; |
---|
| 1436 | write_to_init_cmd_fifo_inst = r_write_copy_inst.read(); |
---|
| 1437 | write_to_init_cmd_fifo_srcid = r_write_copy.read(); |
---|
| 1438 | if(r_write_count.read() == 1){ |
---|
| 1439 | r_write_fsm = WRITE_IDLE; |
---|
| 1440 | r_write_to_init_cmd_multi_req = true; |
---|
| 1441 | } else { |
---|
| 1442 | r_write_fsm = WRITE_UPDATE; |
---|
| 1443 | } |
---|
| 1444 | } else { |
---|
| 1445 | r_write_fsm = WRITE_UPDATE; |
---|
| 1446 | } |
---|
| 1447 | } |
---|
| 1448 | break; |
---|
| 1449 | } |
---|
| 1450 | ////////////////// |
---|
| 1451 | case WRITE_UPDATE: // send a multi-update request to INIT_CMD fsm |
---|
| 1452 | { |
---|
| 1453 | assert( (r_alloc_heap_fsm.read() == ALLOC_HEAP_WRITE) && |
---|
| 1454 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 1455 | HeapEntry entry = m_heap_directory.read(r_write_ptr.read()); |
---|
| 1456 | write_to_init_cmd_fifo_inst = entry.owner.inst; |
---|
| 1457 | write_to_init_cmd_fifo_srcid = entry.owner.srcid; |
---|
| 1458 | bool dec_upt_counter = r_write_to_dec.read(); |
---|
| 1459 | if( (entry.owner.srcid != r_write_srcid.read()) || entry.owner.inst ){ |
---|
| 1460 | write_to_init_cmd_fifo_put = true; |
---|
| 1461 | } else { |
---|
| 1462 | dec_upt_counter = true; |
---|
| 1463 | } |
---|
| 1464 | r_write_to_dec = dec_upt_counter; |
---|
| 1465 | |
---|
| 1466 | if( m_write_to_init_cmd_inst_fifo.wok() ){ |
---|
| 1467 | r_write_ptr = entry.next; |
---|
| 1468 | if( entry.next == r_write_ptr.read() ) { // last copy |
---|
| 1469 | r_write_to_init_cmd_multi_req = true; |
---|
| 1470 | if(dec_upt_counter){ |
---|
| 1471 | r_write_fsm = WRITE_UPT_DEC; |
---|
| 1472 | } else { |
---|
| 1473 | r_write_fsm = WRITE_IDLE; |
---|
| 1474 | } |
---|
| 1475 | } else { |
---|
| 1476 | r_write_fsm = WRITE_UPDATE; |
---|
| 1477 | } |
---|
| 1478 | } else { |
---|
| 1479 | r_write_fsm = WRITE_UPDATE; |
---|
| 1480 | } |
---|
| 1481 | break; |
---|
| 1482 | } |
---|
| 1483 | ////////////////// |
---|
| 1484 | case WRITE_UPT_DEC: |
---|
| 1485 | { |
---|
| 1486 | if(!r_write_to_init_rsp_req.read()){ |
---|
| 1487 | r_write_to_init_rsp_req = true; |
---|
| 1488 | r_write_to_init_rsp_upt_index = r_write_upt_index.read(); |
---|
| 1489 | r_write_fsm = WRITE_IDLE; |
---|
| 1490 | } |
---|
| 1491 | break; |
---|
| 1492 | } |
---|
| 1493 | /////////////// |
---|
| 1494 | case WRITE_RSP: // send a request to TGT_RSP FSM to acknowledge the write |
---|
| 1495 | { |
---|
| 1496 | if ( !r_write_to_tgt_rsp_req.read() ) { |
---|
| 1497 | r_write_to_tgt_rsp_req = true; |
---|
| 1498 | r_write_to_tgt_rsp_srcid = r_write_srcid.read(); |
---|
| 1499 | r_write_to_tgt_rsp_trdid = r_write_trdid.read(); |
---|
| 1500 | r_write_to_tgt_rsp_pktid = r_write_pktid.read(); |
---|
| 1501 | r_write_fsm = WRITE_IDLE; |
---|
| 1502 | } |
---|
| 1503 | break; |
---|
| 1504 | } |
---|
| 1505 | //////////////////// |
---|
| 1506 | case WRITE_TRT_LOCK: // Miss : check Transaction Table |
---|
| 1507 | { |
---|
| 1508 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) { |
---|
| 1509 | #ifdef TDEBUG |
---|
| 1510 | std::cout << sc_time_stamp() << " " << name() << " READ_TRT_LOCK " << std::endl; |
---|
| 1511 | #endif |
---|
| 1512 | size_t hit_index = 0; |
---|
| 1513 | size_t wok_index = 0; |
---|
| 1514 | bool hit_read = m_transaction_tab.hit_read(m_nline[(vci_addr_t)(r_write_address.read())],hit_index); |
---|
| 1515 | bool hit_write = m_transaction_tab.hit_write(m_nline[(vci_addr_t)(r_write_address.read())]); |
---|
| 1516 | bool wok = !m_transaction_tab.full(wok_index); |
---|
| 1517 | if ( hit_read ) { // register the modified data in TRT |
---|
| 1518 | r_write_trt_index = hit_index; |
---|
| 1519 | r_write_fsm = WRITE_TRT_DATA; |
---|
| 1520 | } else if ( wok && !hit_write ) { // set a new entry in TRT |
---|
| 1521 | r_write_trt_index = wok_index; |
---|
| 1522 | r_write_fsm = WRITE_TRT_SET; |
---|
| 1523 | } else { // wait an empty entry in TRT |
---|
| 1524 | r_write_fsm = WRITE_WAIT; |
---|
| 1525 | } |
---|
| 1526 | } |
---|
| 1527 | break; |
---|
| 1528 | } |
---|
| 1529 | //////////////////// |
---|
| 1530 | case WRITE_WAIT: // release the lock protecting TRT |
---|
| 1531 | { |
---|
| 1532 | r_write_fsm = WRITE_DIR_LOCK; |
---|
| 1533 | break; |
---|
| 1534 | } |
---|
| 1535 | /////////////////// |
---|
| 1536 | case WRITE_TRT_SET: // register a new transaction in TRT (Write Buffer) |
---|
| 1537 | { |
---|
| 1538 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) |
---|
| 1539 | { |
---|
| 1540 | std::vector<be_t> be_vector; |
---|
| 1541 | std::vector<data_t> data_vector; |
---|
| 1542 | be_vector.clear(); |
---|
| 1543 | data_vector.clear(); |
---|
| 1544 | for ( size_t i=0; i<m_words; i++ ) |
---|
| 1545 | { |
---|
| 1546 | be_vector.push_back(r_write_be[i]); |
---|
| 1547 | data_vector.push_back(r_write_data[i]); |
---|
| 1548 | } |
---|
| 1549 | m_transaction_tab.set(r_write_trt_index.read(), |
---|
| 1550 | true, // read request to XRAM |
---|
| 1551 | m_nline[(vci_addr_t)(r_write_address.read())], |
---|
| 1552 | r_write_srcid.read(), |
---|
| 1553 | r_write_trdid.read(), |
---|
| 1554 | r_write_pktid.read(), |
---|
| 1555 | false, // not a processor read |
---|
| 1556 | 0, // not a single word |
---|
| 1557 | 0, // word index |
---|
| 1558 | be_vector, |
---|
| 1559 | data_vector); |
---|
| 1560 | #ifdef TDEBUG |
---|
| 1561 | std::cout << sc_time_stamp() << " " << name() << " WRITE_TRT_SET transaction table : " << std::endl; |
---|
| 1562 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1563 | m_transaction_tab.print(i); |
---|
| 1564 | #endif |
---|
| 1565 | |
---|
| 1566 | r_write_fsm = WRITE_XRAM_REQ; |
---|
| 1567 | } |
---|
| 1568 | break; |
---|
| 1569 | } |
---|
| 1570 | /////////////////// |
---|
| 1571 | case WRITE_TRT_DATA: // update an entry in TRT (Write Buffer) |
---|
| 1572 | { |
---|
| 1573 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) { |
---|
| 1574 | std::vector<be_t> be_vector; |
---|
| 1575 | std::vector<data_t> data_vector; |
---|
| 1576 | be_vector.clear(); |
---|
| 1577 | data_vector.clear(); |
---|
| 1578 | for ( size_t i=0; i<m_words; i++ ) { |
---|
| 1579 | be_vector.push_back(r_write_be[i]); |
---|
| 1580 | data_vector.push_back(r_write_data[i]); |
---|
| 1581 | } |
---|
| 1582 | m_transaction_tab.write_data_mask(r_write_trt_index.read(), |
---|
| 1583 | be_vector, |
---|
| 1584 | data_vector); |
---|
| 1585 | r_write_fsm = WRITE_RSP; |
---|
| 1586 | #ifdef TDEBUG |
---|
| 1587 | std::cout << sc_time_stamp() << " " << name() << " WRITE_TRT_DATA transaction table : " << std::endl; |
---|
| 1588 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1589 | m_transaction_tab.print(i); |
---|
| 1590 | #endif |
---|
| 1591 | |
---|
| 1592 | } |
---|
| 1593 | break; |
---|
| 1594 | } |
---|
| 1595 | //////////////////// |
---|
| 1596 | case WRITE_XRAM_REQ: // send a request to IXR_CMD FSM |
---|
| 1597 | { |
---|
| 1598 | |
---|
| 1599 | if ( !r_write_to_ixr_cmd_req ) { |
---|
| 1600 | r_write_to_ixr_cmd_req = true; |
---|
| 1601 | r_write_to_ixr_cmd_write = false; |
---|
| 1602 | r_write_to_ixr_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1603 | r_write_to_ixr_cmd_trdid = r_write_trt_index.read(); |
---|
| 1604 | r_write_fsm = WRITE_RSP; |
---|
| 1605 | } |
---|
| 1606 | break; |
---|
| 1607 | } |
---|
| 1608 | //////////////////// |
---|
| 1609 | case WRITE_TRT_WRITE_LOCK: |
---|
| 1610 | { |
---|
| 1611 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) { |
---|
| 1612 | size_t wok_index = 0; |
---|
| 1613 | bool wok = !m_transaction_tab.full(wok_index); |
---|
| 1614 | if ( wok ) { // set a new entry in TRT |
---|
| 1615 | r_write_trt_index = wok_index; |
---|
| 1616 | r_write_fsm = WRITE_INVAL_LOCK; |
---|
| 1617 | } else { // wait an empty entry in TRT |
---|
| 1618 | r_write_fsm = WRITE_WAIT; |
---|
| 1619 | } |
---|
| 1620 | } |
---|
| 1621 | |
---|
| 1622 | break; |
---|
| 1623 | } |
---|
| 1624 | //////////////////// |
---|
| 1625 | case WRITE_INVAL_LOCK: |
---|
| 1626 | { |
---|
| 1627 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_WRITE ) { |
---|
| 1628 | bool wok = false; |
---|
| 1629 | size_t index = 0; |
---|
| 1630 | size_t srcid = r_write_srcid.read(); |
---|
| 1631 | size_t trdid = r_write_trdid.read(); |
---|
| 1632 | size_t pktid = r_write_pktid.read(); |
---|
| 1633 | addr_t nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1634 | size_t nb_copies = r_write_count.read(); |
---|
| 1635 | |
---|
| 1636 | wok =m_update_tab.set(false, // it's an inval transaction |
---|
| 1637 | true, // it's a broadcast |
---|
| 1638 | true, // it needs a response |
---|
| 1639 | srcid, |
---|
| 1640 | trdid, |
---|
| 1641 | pktid, |
---|
| 1642 | nline, |
---|
| 1643 | nb_copies, |
---|
| 1644 | index); |
---|
| 1645 | #ifdef IDEBUG |
---|
| 1646 | if(wok){ |
---|
| 1647 | std::cout << sc_time_stamp() << " " << name() << " WRITE_INVAL_LOCK update table : " << std::endl; |
---|
| 1648 | m_update_tab.print(); |
---|
| 1649 | } |
---|
| 1650 | #endif |
---|
| 1651 | r_write_upt_index = index; |
---|
| 1652 | // releases the lock protecting Update Table if no entry... |
---|
| 1653 | if ( wok ) r_write_fsm = WRITE_DIR_INVAL; |
---|
| 1654 | else r_write_fsm = WRITE_WAIT; |
---|
| 1655 | } |
---|
| 1656 | |
---|
| 1657 | break; |
---|
| 1658 | } |
---|
| 1659 | //////////////////// |
---|
| 1660 | case WRITE_DIR_INVAL: |
---|
| 1661 | { |
---|
| 1662 | assert(((r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE ) && |
---|
| 1663 | (r_alloc_upt_fsm.read() == ALLOC_UPT_WRITE ) && |
---|
| 1664 | (r_alloc_dir_fsm.read() == ALLOC_DIR_WRITE ))&& |
---|
| 1665 | "MemCache ERROR : bad TRT,DIR or UPT allocation error"); |
---|
| 1666 | m_transaction_tab.set(r_write_trt_index.read(), |
---|
| 1667 | false, // write request to XRAM |
---|
| 1668 | m_nline[(vci_addr_t)(r_write_address.read())], |
---|
| 1669 | 0, |
---|
| 1670 | 0, |
---|
| 1671 | 0, |
---|
| 1672 | false, // not a processor read |
---|
| 1673 | 0, // not a single word |
---|
| 1674 | 0, // word index |
---|
| 1675 | std::vector<be_t>(m_words,0), |
---|
| 1676 | std::vector<data_t>(m_words,0)); |
---|
| 1677 | #ifdef TDEBUG |
---|
| 1678 | std::cout << sc_time_stamp() << " " << name() << " WRITE_DIR_INVAL transaction table : " << std::endl; |
---|
| 1679 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1680 | m_transaction_tab.print(i); |
---|
| 1681 | #endif |
---|
| 1682 | |
---|
| 1683 | // invalidate directory entry |
---|
| 1684 | DirectoryEntry entry; |
---|
| 1685 | entry.valid = false; |
---|
| 1686 | entry.dirty = false; |
---|
| 1687 | entry.tag = 0; |
---|
| 1688 | entry.is_cnt = false; |
---|
| 1689 | entry.lock = false; |
---|
| 1690 | entry.inst = false; |
---|
| 1691 | entry.owner.srcid = 0; |
---|
| 1692 | entry.owner.inst = false; |
---|
| 1693 | entry.ptr = 0; |
---|
| 1694 | entry.count = 0; |
---|
| 1695 | size_t set = m_y[(vci_addr_t)(r_write_address.read())]; |
---|
| 1696 | size_t way = r_write_way.read(); |
---|
| 1697 | m_cache_directory.write(set, way, entry); |
---|
| 1698 | |
---|
| 1699 | r_write_fsm = WRITE_INVAL; |
---|
| 1700 | break; |
---|
| 1701 | } |
---|
| 1702 | //////////////////// |
---|
| 1703 | case WRITE_INVAL: |
---|
| 1704 | { |
---|
| 1705 | if ( !r_write_to_init_cmd_multi_req.read() && |
---|
| 1706 | !r_write_to_init_cmd_brdcast_req.read() ) { |
---|
| 1707 | r_write_to_init_cmd_multi_req = false; |
---|
| 1708 | r_write_to_init_cmd_brdcast_req = true; |
---|
| 1709 | r_write_to_init_cmd_trdid = r_write_upt_index.read(); |
---|
| 1710 | r_write_to_init_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1711 | r_write_to_init_cmd_index = 0; |
---|
| 1712 | r_write_to_init_cmd_count = 0; |
---|
| 1713 | |
---|
| 1714 | for(size_t i=0; i<m_words ; i++){ |
---|
| 1715 | r_write_to_init_cmd_we[i]=false; |
---|
| 1716 | r_write_to_init_cmd_data[i] = 0; |
---|
| 1717 | } |
---|
| 1718 | r_write_fsm = WRITE_XRAM_SEND; |
---|
| 1719 | // all inval responses |
---|
| 1720 | } |
---|
| 1721 | |
---|
| 1722 | break; |
---|
| 1723 | } |
---|
| 1724 | //////////////////// |
---|
| 1725 | case WRITE_XRAM_SEND: |
---|
| 1726 | { |
---|
| 1727 | if ( !r_write_to_ixr_cmd_req ) { |
---|
| 1728 | r_write_to_ixr_cmd_req = true; |
---|
| 1729 | r_write_to_ixr_cmd_write = true; |
---|
| 1730 | r_write_to_ixr_cmd_nline = m_nline[(vci_addr_t)(r_write_address.read())]; |
---|
| 1731 | r_write_to_ixr_cmd_trdid = r_write_trt_index.read(); |
---|
| 1732 | for(size_t i=0; i<m_words; i++){ |
---|
| 1733 | r_write_to_ixr_cmd_data[i] = r_write_data[i]; |
---|
| 1734 | } |
---|
| 1735 | if( r_write_is_cnt.read() || |
---|
| 1736 | ((!r_write_is_cnt.read()) && (r_write_count.read()==1)) ){ |
---|
| 1737 | r_write_fsm = WRITE_IDLE; |
---|
| 1738 | } else { |
---|
| 1739 | r_write_fsm = WRITE_HEAP_ERASE; |
---|
| 1740 | r_write_next_ptr = r_write_ptr.read(); |
---|
| 1741 | } |
---|
| 1742 | } |
---|
| 1743 | break; |
---|
| 1744 | } |
---|
| 1745 | //////////////////// |
---|
| 1746 | case WRITE_HEAP_ERASE: |
---|
| 1747 | { |
---|
| 1748 | if(r_alloc_heap_fsm.read() == ALLOC_HEAP_WRITE){ |
---|
| 1749 | HeapEntry next_entry = m_heap_directory.read(r_write_next_ptr.read()); |
---|
| 1750 | if( next_entry.next == r_write_next_ptr.read()){ |
---|
| 1751 | r_write_fsm = WRITE_HEAP_LAST; |
---|
| 1752 | } else { |
---|
| 1753 | r_write_next_ptr = next_entry.next; |
---|
| 1754 | r_write_fsm = WRITE_HEAP_ERASE; |
---|
| 1755 | } |
---|
| 1756 | } |
---|
| 1757 | break; |
---|
| 1758 | } |
---|
| 1759 | //////////////////// |
---|
| 1760 | case WRITE_HEAP_LAST: |
---|
| 1761 | { |
---|
| 1762 | assert((r_alloc_heap_fsm.read() == ALLOC_HEAP_WRITE) && |
---|
| 1763 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 1764 | size_t free_pointer = m_heap_directory.next_free_ptr(); |
---|
| 1765 | |
---|
| 1766 | HeapEntry last_entry; |
---|
| 1767 | last_entry.owner.srcid = 0; |
---|
| 1768 | last_entry.owner.inst = false; |
---|
| 1769 | if(m_heap_directory.is_full()){ |
---|
| 1770 | last_entry.next = r_write_next_ptr.read(); |
---|
| 1771 | m_heap_directory.unset_full(); |
---|
| 1772 | } else { |
---|
| 1773 | last_entry.next = free_pointer; |
---|
| 1774 | } |
---|
| 1775 | |
---|
| 1776 | m_heap_directory.write_free_ptr(r_write_ptr.read()); |
---|
| 1777 | m_heap_directory.write(r_write_next_ptr.read(),last_entry); |
---|
| 1778 | |
---|
| 1779 | r_write_fsm = WRITE_IDLE; |
---|
| 1780 | break; |
---|
| 1781 | } |
---|
| 1782 | } // end switch r_write_fsm |
---|
| 1783 | |
---|
| 1784 | /////////////////////////////////////////////////////////////////////// |
---|
| 1785 | // IXR_CMD FSM |
---|
| 1786 | /////////////////////////////////////////////////////////////////////// |
---|
| 1787 | // The IXR_CMD fsm controls the command packets to the XRAM : |
---|
| 1788 | // - It sends a single cell VCI read to the XRAM in case of MISS request |
---|
| 1789 | // posted by the READ, WRITE or LLSC FSMs : the TRDID field contains |
---|
| 1790 | // the Transaction Tab index. |
---|
| 1791 | // The VCI response is a multi-cell packet : the N cells contain |
---|
| 1792 | // the N data words. |
---|
| 1793 | // - It sends a multi-cell VCI write when the XRAM_RSP FSM request |
---|
| 1794 | // to save a dirty line to the XRAM. |
---|
| 1795 | // The VCI response is a single cell packet. |
---|
| 1796 | // This FSM handles requests from the READ, WRITE, LLSC & XRAM_RSP FSMs |
---|
| 1797 | // with a round-robin priority. |
---|
| 1798 | //////////////////////////////////////////////////////////////////////// |
---|
| 1799 | |
---|
| 1800 | switch ( r_ixr_cmd_fsm.read() ) { |
---|
| 1801 | //////////////////////// |
---|
| 1802 | case IXR_CMD_READ_IDLE: |
---|
| 1803 | if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
| 1804 | else if ( r_llsc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_LLSC_NLINE; |
---|
| 1805 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
| 1806 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
| 1807 | break; |
---|
| 1808 | //////////////////////// |
---|
| 1809 | case IXR_CMD_WRITE_IDLE: |
---|
| 1810 | if ( r_llsc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_LLSC_NLINE; |
---|
| 1811 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
| 1812 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
| 1813 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
| 1814 | break; |
---|
| 1815 | //////////////////////// |
---|
| 1816 | case IXR_CMD_LLSC_IDLE: |
---|
| 1817 | if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
| 1818 | else if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
| 1819 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
| 1820 | else if ( r_llsc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_LLSC_NLINE; |
---|
| 1821 | break; |
---|
| 1822 | //////////////////////// |
---|
| 1823 | case IXR_CMD_XRAM_IDLE: |
---|
| 1824 | if ( r_read_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_READ_NLINE; |
---|
| 1825 | else if ( r_write_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_WRITE_NLINE; |
---|
| 1826 | else if ( r_llsc_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_LLSC_NLINE; |
---|
| 1827 | else if ( r_xram_rsp_to_ixr_cmd_req ) r_ixr_cmd_fsm = IXR_CMD_XRAM_DATA; |
---|
| 1828 | break; |
---|
| 1829 | ///////////////////////// |
---|
| 1830 | case IXR_CMD_READ_NLINE: |
---|
| 1831 | if ( p_vci_ixr.cmdack ) { |
---|
| 1832 | r_ixr_cmd_fsm = IXR_CMD_READ_IDLE; |
---|
| 1833 | r_read_to_ixr_cmd_req = false; |
---|
| 1834 | } |
---|
| 1835 | break; |
---|
| 1836 | ////////////////////////// |
---|
| 1837 | case IXR_CMD_WRITE_NLINE: |
---|
| 1838 | if ( p_vci_ixr.cmdack ) { |
---|
| 1839 | if( r_write_to_ixr_cmd_write.read()){ |
---|
| 1840 | if ( r_ixr_cmd_cpt.read() == (m_words - 1) ) { |
---|
| 1841 | r_ixr_cmd_cpt = 0; |
---|
| 1842 | r_ixr_cmd_fsm = IXR_CMD_WRITE_IDLE; |
---|
| 1843 | r_write_to_ixr_cmd_req = false; |
---|
| 1844 | } else { |
---|
| 1845 | r_ixr_cmd_cpt = r_ixr_cmd_cpt + 1; |
---|
| 1846 | } |
---|
| 1847 | } else { |
---|
| 1848 | r_ixr_cmd_fsm = IXR_CMD_WRITE_IDLE; |
---|
| 1849 | r_write_to_ixr_cmd_req = false; |
---|
| 1850 | } |
---|
| 1851 | } |
---|
| 1852 | break; |
---|
| 1853 | ///////////////////////// |
---|
| 1854 | case IXR_CMD_LLSC_NLINE: |
---|
| 1855 | if ( p_vci_ixr.cmdack ) { |
---|
| 1856 | if( r_llsc_to_ixr_cmd_write.read()){ |
---|
| 1857 | if ( r_ixr_cmd_cpt.read() == (m_words - 1) ) { |
---|
| 1858 | r_ixr_cmd_cpt = 0; |
---|
| 1859 | r_ixr_cmd_fsm = IXR_CMD_LLSC_IDLE; |
---|
| 1860 | r_llsc_to_ixr_cmd_req = false; |
---|
| 1861 | } else { |
---|
| 1862 | r_ixr_cmd_cpt = r_ixr_cmd_cpt + 1; |
---|
| 1863 | } |
---|
| 1864 | } else { |
---|
| 1865 | r_ixr_cmd_fsm = IXR_CMD_LLSC_IDLE; |
---|
| 1866 | r_llsc_to_ixr_cmd_req = false; |
---|
| 1867 | } |
---|
| 1868 | } |
---|
| 1869 | break; |
---|
| 1870 | //////////////////////// |
---|
| 1871 | case IXR_CMD_XRAM_DATA: |
---|
| 1872 | if ( p_vci_ixr.cmdack ) { |
---|
| 1873 | if ( r_ixr_cmd_cpt.read() == (m_words - 1) ) { |
---|
| 1874 | r_ixr_cmd_cpt = 0; |
---|
| 1875 | r_ixr_cmd_fsm = IXR_CMD_XRAM_IDLE; |
---|
| 1876 | r_xram_rsp_to_ixr_cmd_req = false; |
---|
| 1877 | } else { |
---|
| 1878 | r_ixr_cmd_cpt = r_ixr_cmd_cpt + 1; |
---|
| 1879 | } |
---|
| 1880 | } |
---|
| 1881 | break; |
---|
| 1882 | |
---|
| 1883 | } // end switch r_ixr_cmd_fsm |
---|
| 1884 | |
---|
| 1885 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1886 | // IXR_RSP FSM |
---|
| 1887 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1888 | // The IXR_RSP FSM receives the response packets from the XRAM, |
---|
| 1889 | // for both write transaction, and read transaction. |
---|
| 1890 | // |
---|
| 1891 | // - A response to a write request is a single-cell VCI packet. |
---|
| 1892 | // The Transaction Tab index is contained in the RTRDID field. |
---|
| 1893 | // The FSM takes the lock protecting the TRT, and the corresponding |
---|
| 1894 | // entry is erased. |
---|
| 1895 | // |
---|
| 1896 | // - A response to a read request is a multi-cell VCI packet. |
---|
| 1897 | // The Transaction Tab index is contained in the RTRDID field. |
---|
| 1898 | // The N cells contain the N words of the cache line in the RDATA field. |
---|
| 1899 | // The FSM takes the lock protecting the TRT to store the line in the TRT |
---|
| 1900 | // (taking into account the write requests already stored in the TRT). |
---|
| 1901 | // When the line is completely written, the corresponding rok signal is set. |
---|
| 1902 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 1903 | |
---|
| 1904 | switch ( r_ixr_rsp_fsm.read() ) { |
---|
| 1905 | |
---|
| 1906 | /////////////////// |
---|
| 1907 | case IXR_RSP_IDLE: // test if it's a read or a write transaction |
---|
| 1908 | { |
---|
| 1909 | if ( p_vci_ixr.rspval ) { |
---|
| 1910 | r_ixr_rsp_cpt = 0; |
---|
| 1911 | r_ixr_rsp_trt_index = p_vci_ixr.rtrdid.read(); |
---|
| 1912 | if ( p_vci_ixr.reop ) r_ixr_rsp_fsm = IXR_RSP_ACK; |
---|
| 1913 | else r_ixr_rsp_fsm = IXR_RSP_TRT_READ; |
---|
| 1914 | } |
---|
| 1915 | break; |
---|
| 1916 | } |
---|
| 1917 | //////////////////////// |
---|
| 1918 | case IXR_RSP_ACK: // Acknowledge the vci response |
---|
| 1919 | r_ixr_rsp_fsm = IXR_RSP_TRT_ERASE; |
---|
| 1920 | break; |
---|
| 1921 | //////////////////////// |
---|
| 1922 | case IXR_RSP_TRT_ERASE: // erase the entry in the TRT |
---|
| 1923 | { |
---|
| 1924 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP ) { |
---|
| 1925 | m_transaction_tab.erase(r_ixr_rsp_trt_index.read()); |
---|
| 1926 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
| 1927 | #ifdef TDEBUG |
---|
| 1928 | std::cout << sc_time_stamp() << " " << name() << " IXR_RSP_TRT_ERASE transaction table : " << std::endl; |
---|
| 1929 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1930 | m_transaction_tab.print(i); |
---|
| 1931 | #endif |
---|
| 1932 | |
---|
| 1933 | } |
---|
| 1934 | break; |
---|
| 1935 | } |
---|
| 1936 | /////////////////////// |
---|
| 1937 | case IXR_RSP_TRT_READ: // write data in the TRT |
---|
| 1938 | { |
---|
| 1939 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP) && p_vci_ixr.rspval ) { |
---|
| 1940 | bool eop = p_vci_ixr.reop.read(); |
---|
| 1941 | data_t data = p_vci_ixr.rdata.read(); |
---|
| 1942 | size_t index = r_ixr_rsp_trt_index.read(); |
---|
| 1943 | assert( eop == (r_ixr_rsp_cpt.read() == (m_words-1)) |
---|
| 1944 | && "Error in VCI_MEM_CACHE : invalid length for a response from XRAM"); |
---|
| 1945 | m_transaction_tab.write_rsp(index, r_ixr_rsp_cpt.read(), data); |
---|
| 1946 | r_ixr_rsp_cpt = r_ixr_rsp_cpt.read() + 1; |
---|
| 1947 | if ( eop ) { |
---|
| 1948 | #ifdef TDEBUG |
---|
| 1949 | std::cout << sc_time_stamp() << " " << name() << " IXR_RSP_TRT_READ transaction table : " << std::endl; |
---|
| 1950 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 1951 | m_transaction_tab.print(i); |
---|
| 1952 | #endif |
---|
| 1953 | |
---|
| 1954 | r_ixr_rsp_to_xram_rsp_rok[r_ixr_rsp_trt_index.read()]=true; |
---|
| 1955 | r_ixr_rsp_fsm = IXR_RSP_IDLE; |
---|
| 1956 | } |
---|
| 1957 | } |
---|
| 1958 | break; |
---|
| 1959 | } |
---|
| 1960 | } // end swich r_ixr_rsp_fsm |
---|
| 1961 | |
---|
| 1962 | |
---|
| 1963 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1964 | // XRAM_RSP FSM |
---|
| 1965 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1966 | // The XRAM_RSP FSM handles the incoming cache lines from the XRAM. |
---|
| 1967 | // The cache line has been written in the TRT buffer by the IXR_FSM. |
---|
| 1968 | // |
---|
| 1969 | // When a response is available, the corresponding TRT entry |
---|
| 1970 | // is copied in a local buffer to be written in the cache. |
---|
| 1971 | // Then, the FSM releases the lock protecting the TRT, and takes the lock |
---|
| 1972 | // protecting the cache directory. |
---|
| 1973 | // It selects a cache slot and writes the line in the cache. |
---|
| 1974 | // If it was a read MISS, the XRAM_RSP FSM send a request to the TGT_RSP |
---|
| 1975 | // FSM to return the cache line to the registered processor. |
---|
| 1976 | // If there is no empty slot, a victim line is evicted, and |
---|
| 1977 | // invalidate requests are sent to the L1 caches containing copies. |
---|
| 1978 | // If this line is dirty, the XRAM_RSP FSM send a request to the IXR_CMD |
---|
| 1979 | // FSM to save the victim line to the XRAM, and register the write transaction |
---|
| 1980 | // in the TRT (using the entry previously used by the read transaction). |
---|
| 1981 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 1982 | |
---|
| 1983 | switch ( r_xram_rsp_fsm.read() ) { |
---|
| 1984 | |
---|
| 1985 | /////////////////// |
---|
| 1986 | case XRAM_RSP_IDLE: // test if there is a response with a round robin priority |
---|
| 1987 | { |
---|
| 1988 | size_t ptr = r_xram_rsp_trt_index.read(); |
---|
| 1989 | size_t lines = TRANSACTION_TAB_LINES; |
---|
| 1990 | for(size_t i=0; i<lines; i++){ |
---|
| 1991 | size_t index=(i+ptr+1)%lines; |
---|
| 1992 | if(r_ixr_rsp_to_xram_rsp_rok[index]){ |
---|
| 1993 | r_xram_rsp_trt_index=index; |
---|
| 1994 | r_ixr_rsp_to_xram_rsp_rok[index]=false; |
---|
| 1995 | r_xram_rsp_fsm = XRAM_RSP_DIR_LOCK; |
---|
| 1996 | break; |
---|
| 1997 | #ifdef TDEBUG |
---|
| 1998 | std::cout << "XRAM_RSP FSM in XRAM_RSP_IDLE state" << std::endl; |
---|
| 1999 | #endif |
---|
| 2000 | } |
---|
| 2001 | } |
---|
| 2002 | break; |
---|
| 2003 | } |
---|
| 2004 | /////////////////////// |
---|
| 2005 | case XRAM_RSP_DIR_LOCK: // Take the lock on the directory |
---|
| 2006 | { |
---|
| 2007 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_XRAM_RSP ) { |
---|
| 2008 | r_xram_rsp_fsm = XRAM_RSP_TRT_COPY; |
---|
| 2009 | #ifdef TDEBUG |
---|
| 2010 | std::cout << "XRAM_RSP FSM in XRAM_RSP_DIR_LOCK state" << std::endl; |
---|
| 2011 | #endif |
---|
| 2012 | } |
---|
| 2013 | break; |
---|
| 2014 | } |
---|
| 2015 | /////////////////////// |
---|
| 2016 | case XRAM_RSP_TRT_COPY: // Copy the TRT entry in the local buffer and eviction of a cache line |
---|
| 2017 | { |
---|
| 2018 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_XRAM_RSP) ) { |
---|
| 2019 | size_t index = r_xram_rsp_trt_index.read(); |
---|
| 2020 | TransactionTabEntry trt_entry(m_transaction_tab.read(index)); |
---|
| 2021 | |
---|
| 2022 | r_xram_rsp_trt_buf.copy(trt_entry); // TRT entry local buffer |
---|
| 2023 | |
---|
| 2024 | // selects & extracts a victim line from cache |
---|
| 2025 | size_t way = 0; |
---|
| 2026 | size_t set = m_y[(vci_addr_t)(trt_entry.nline * m_words * 4)]; |
---|
| 2027 | DirectoryEntry victim(m_cache_directory.select(set, way)); |
---|
| 2028 | |
---|
| 2029 | for (size_t i=0 ; i<m_words ; i++) r_xram_rsp_victim_data[i] = m_cache_data[way][set][i]; |
---|
| 2030 | |
---|
| 2031 | bool inval = (victim.count && victim.valid) ; |
---|
| 2032 | |
---|
| 2033 | r_xram_rsp_victim_copy = victim.owner.srcid; |
---|
| 2034 | r_xram_rsp_victim_copy_inst = victim.owner.inst; |
---|
| 2035 | r_xram_rsp_victim_count = victim.count; |
---|
| 2036 | r_xram_rsp_victim_ptr = victim.ptr; |
---|
| 2037 | r_xram_rsp_victim_way = way; |
---|
| 2038 | r_xram_rsp_victim_set = set; |
---|
| 2039 | r_xram_rsp_victim_nline = victim.tag*m_sets + set; |
---|
| 2040 | r_xram_rsp_victim_is_cnt = victim.is_cnt; |
---|
| 2041 | r_xram_rsp_victim_inval = inval ; |
---|
| 2042 | r_xram_rsp_victim_dirty = victim.dirty; |
---|
| 2043 | |
---|
| 2044 | r_xram_rsp_fsm = XRAM_RSP_INVAL_LOCK; |
---|
| 2045 | #ifdef TDEBUG |
---|
| 2046 | std::cout << "XRAM_RSP FSM in XRAM_RSP_TRT_COPY state" << std::endl; |
---|
| 2047 | std::cout << "Victim way : " << std::hex << way << " set " << std::hex << set << std::endl; |
---|
| 2048 | victim.print(); |
---|
| 2049 | #endif |
---|
| 2050 | } |
---|
| 2051 | break; |
---|
| 2052 | } |
---|
| 2053 | /////////////////////// |
---|
| 2054 | case XRAM_RSP_INVAL_LOCK: |
---|
| 2055 | { |
---|
| 2056 | if ( r_alloc_upt_fsm == ALLOC_UPT_XRAM_RSP ) { |
---|
| 2057 | #ifdef IDEBUG |
---|
| 2058 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_LOCK state" << std::endl; |
---|
| 2059 | #endif |
---|
| 2060 | size_t index; |
---|
| 2061 | if(m_update_tab.search_inval(r_xram_rsp_trt_buf.nline, index)){ |
---|
| 2062 | r_xram_rsp_fsm = XRAM_RSP_INVAL_WAIT; |
---|
| 2063 | #ifdef IDEBUG |
---|
| 2064 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_LOCK state to XRAM_RSP_INVAL_WAIT state" << std::endl; |
---|
| 2065 | std::cout << "A invalidation is already registered at this address" << std::endl; |
---|
| 2066 | m_update_tab.print(); |
---|
| 2067 | #endif |
---|
| 2068 | |
---|
| 2069 | } |
---|
| 2070 | else if(m_update_tab.is_full() && r_xram_rsp_victim_inval.read()){ |
---|
| 2071 | r_xram_rsp_fsm = XRAM_RSP_INVAL_WAIT; |
---|
| 2072 | #ifdef IDEBUG |
---|
| 2073 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_LOCK state to XRAM_RSP_INVAL_WAIT state" << std::endl; |
---|
| 2074 | std::cout << "The inval tab is full" << std::endl; |
---|
| 2075 | m_update_tab.print(); |
---|
| 2076 | #endif |
---|
| 2077 | } |
---|
| 2078 | else { |
---|
| 2079 | r_xram_rsp_fsm = XRAM_RSP_DIR_UPDT; |
---|
| 2080 | #ifdef IDEBUG |
---|
| 2081 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_LOCK state to XRAM_RSP_DIR_UPDT state" << std::endl; |
---|
| 2082 | m_update_tab.print(); |
---|
| 2083 | #endif |
---|
| 2084 | } |
---|
| 2085 | } |
---|
| 2086 | break; |
---|
| 2087 | } |
---|
| 2088 | /////////////////////// |
---|
| 2089 | case XRAM_RSP_INVAL_WAIT: |
---|
| 2090 | { |
---|
| 2091 | r_xram_rsp_fsm = XRAM_RSP_DIR_LOCK; |
---|
| 2092 | break; |
---|
| 2093 | #ifdef IDEBUG |
---|
| 2094 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL_WAIT state" << std::endl; |
---|
| 2095 | #endif |
---|
| 2096 | } |
---|
| 2097 | /////////////////////// |
---|
| 2098 | case XRAM_RSP_DIR_UPDT: // updates the cache (both data & directory) |
---|
| 2099 | { |
---|
| 2100 | // signals generation |
---|
| 2101 | bool inst_read = (r_xram_rsp_trt_buf.trdid & 0x2) && r_xram_rsp_trt_buf.proc_read; // It is an instruction read |
---|
| 2102 | bool cached_read = (r_xram_rsp_trt_buf.trdid & 0x1) && r_xram_rsp_trt_buf.proc_read ; |
---|
| 2103 | // update data |
---|
| 2104 | size_t set = r_xram_rsp_victim_set.read(); |
---|
| 2105 | size_t way = r_xram_rsp_victim_way.read(); |
---|
| 2106 | for(size_t i=0; i<m_words ; i++){ |
---|
| 2107 | m_cache_data[way][set][i] = r_xram_rsp_trt_buf.wdata[i]; |
---|
| 2108 | } |
---|
| 2109 | // compute dirty |
---|
| 2110 | bool dirty = false; |
---|
| 2111 | for(size_t i=0; i<m_words;i++){ |
---|
| 2112 | dirty = dirty || (r_xram_rsp_trt_buf.wdata_be[i] != 0); |
---|
| 2113 | } |
---|
| 2114 | |
---|
| 2115 | // update directory |
---|
| 2116 | DirectoryEntry entry; |
---|
| 2117 | entry.valid = true; |
---|
| 2118 | entry.is_cnt = false; |
---|
| 2119 | entry.lock = false; |
---|
| 2120 | entry.dirty = dirty; |
---|
| 2121 | entry.tag = r_xram_rsp_trt_buf.nline / m_sets; |
---|
| 2122 | entry.ptr = 0; |
---|
| 2123 | if(cached_read) { |
---|
| 2124 | if(inst_read) { |
---|
| 2125 | entry.inst = true; |
---|
| 2126 | entry.owner.srcid = r_xram_rsp_trt_buf.srcid; |
---|
| 2127 | entry.owner.inst = true; |
---|
| 2128 | entry.count = 1; |
---|
| 2129 | } else { |
---|
| 2130 | entry.inst = false; |
---|
| 2131 | entry.owner.srcid = r_xram_rsp_trt_buf.srcid; |
---|
| 2132 | entry.owner.inst = false; |
---|
| 2133 | entry.count = 1; |
---|
| 2134 | } |
---|
| 2135 | } else { |
---|
| 2136 | entry.owner.srcid = 0; |
---|
| 2137 | entry.owner.inst = 0; |
---|
| 2138 | entry.inst = false; |
---|
| 2139 | entry.count = 0; |
---|
| 2140 | } |
---|
| 2141 | m_cache_directory.write(set, way, entry); |
---|
| 2142 | #ifdef DDEBUG |
---|
| 2143 | std::cout << "printing the entry : " << std::endl; |
---|
| 2144 | entry.print(); |
---|
| 2145 | std::cout << "done" << std::endl; |
---|
| 2146 | #endif |
---|
| 2147 | |
---|
| 2148 | #ifdef TDEBUG |
---|
| 2149 | std::cout << sc_time_stamp() << " " << name() << " XRAM_RSP_DIR_UPDT transaction table : " << std::endl; |
---|
| 2150 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 2151 | m_transaction_tab.print(i); |
---|
| 2152 | #endif |
---|
| 2153 | |
---|
| 2154 | if(r_xram_rsp_victim_inval.read()){ |
---|
| 2155 | bool brdcast = r_xram_rsp_victim_is_cnt.read(); |
---|
| 2156 | size_t index; |
---|
| 2157 | size_t count_copies = r_xram_rsp_victim_count.read(); |
---|
| 2158 | |
---|
| 2159 | bool wok = m_update_tab.set(false, // it's an inval transaction |
---|
| 2160 | brdcast, // set brdcast bit |
---|
| 2161 | false, // it does not need a response |
---|
| 2162 | 0, |
---|
| 2163 | 0, |
---|
| 2164 | 0, |
---|
| 2165 | r_xram_rsp_victim_nline.read(), |
---|
| 2166 | count_copies, |
---|
| 2167 | index); |
---|
| 2168 | |
---|
| 2169 | #ifdef IDEBUG |
---|
| 2170 | std::cout << "xram_rsp : record invalidation, time = " << std::dec << m_cpt_cycles << std::endl; |
---|
| 2171 | m_update_tab.print(); |
---|
| 2172 | #endif |
---|
| 2173 | r_xram_rsp_upt_index = index; |
---|
| 2174 | if(!wok) { |
---|
| 2175 | assert(false && "mem_cache error : xram_rsp_dir_upt, an update_tab entry was free but write unsuccessful"); |
---|
| 2176 | } |
---|
| 2177 | } |
---|
| 2178 | // If the victim is not dirty, we erase the entry in the TRT |
---|
| 2179 | if (!r_xram_rsp_victim_dirty.read()){ |
---|
| 2180 | m_transaction_tab.erase(r_xram_rsp_trt_index.read()); |
---|
| 2181 | |
---|
| 2182 | } |
---|
| 2183 | // Next state |
---|
| 2184 | if ( r_xram_rsp_victim_dirty.read()) r_xram_rsp_fsm = XRAM_RSP_TRT_DIRTY; |
---|
| 2185 | else if ( r_xram_rsp_trt_buf.proc_read ) r_xram_rsp_fsm = XRAM_RSP_DIR_RSP; |
---|
| 2186 | else if ( r_xram_rsp_victim_inval.read()) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
| 2187 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 2188 | break; |
---|
| 2189 | } |
---|
| 2190 | //////////////////////// |
---|
| 2191 | case XRAM_RSP_TRT_DIRTY: // set the TRT entry (write line to XRAM) if the victim is dirty |
---|
| 2192 | { |
---|
| 2193 | if ( r_alloc_trt_fsm.read() == ALLOC_TRT_XRAM_RSP ) { |
---|
| 2194 | m_transaction_tab.set(r_xram_rsp_trt_index.read(), |
---|
| 2195 | false, // write to XRAM |
---|
| 2196 | r_xram_rsp_victim_nline.read(), // line index |
---|
| 2197 | 0, |
---|
| 2198 | 0, |
---|
| 2199 | 0, |
---|
| 2200 | false, |
---|
| 2201 | 0, |
---|
| 2202 | 0, |
---|
| 2203 | std::vector<be_t>(m_words,0), |
---|
| 2204 | std::vector<data_t>(m_words,0) ); |
---|
| 2205 | #ifdef TDEBUG |
---|
| 2206 | std::cout << sc_time_stamp() << " " << name() << " XRAM_RSP_TRT_DIRTY transaction table : " << std::endl; |
---|
| 2207 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 2208 | m_transaction_tab.print(i); |
---|
| 2209 | #endif |
---|
| 2210 | |
---|
| 2211 | if ( r_xram_rsp_trt_buf.proc_read ) r_xram_rsp_fsm = XRAM_RSP_DIR_RSP; |
---|
| 2212 | else if ( r_xram_rsp_victim_inval.read()) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
| 2213 | else r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
| 2214 | } |
---|
| 2215 | break; |
---|
| 2216 | } |
---|
| 2217 | ////////////////////// |
---|
| 2218 | case XRAM_RSP_DIR_RSP: // send a request to TGT_RSP FSM in case of read |
---|
| 2219 | { |
---|
| 2220 | if ( !r_xram_rsp_to_tgt_rsp_req.read() ) { |
---|
| 2221 | r_xram_rsp_to_tgt_rsp_srcid = r_xram_rsp_trt_buf.srcid; |
---|
| 2222 | r_xram_rsp_to_tgt_rsp_trdid = r_xram_rsp_trt_buf.trdid; |
---|
| 2223 | r_xram_rsp_to_tgt_rsp_pktid = r_xram_rsp_trt_buf.pktid; |
---|
| 2224 | for (size_t i=0; i < m_words; i++) { |
---|
| 2225 | r_xram_rsp_to_tgt_rsp_data[i] = r_xram_rsp_trt_buf.wdata[i]; |
---|
| 2226 | } |
---|
| 2227 | r_xram_rsp_to_tgt_rsp_word = r_xram_rsp_trt_buf.word_index; |
---|
| 2228 | r_xram_rsp_to_tgt_rsp_length = r_xram_rsp_trt_buf.read_length; |
---|
| 2229 | r_xram_rsp_to_tgt_rsp_req = true; |
---|
| 2230 | |
---|
| 2231 | if ( r_xram_rsp_victim_inval ) r_xram_rsp_fsm = XRAM_RSP_INVAL; |
---|
| 2232 | else if ( r_xram_rsp_victim_dirty ) r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
| 2233 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 2234 | |
---|
| 2235 | #ifdef DDEBUG |
---|
| 2236 | std::cout << "XRAM_RSP FSM in XRAM_RSP_DIR_RSP state" << std::endl; |
---|
| 2237 | #endif |
---|
| 2238 | } |
---|
| 2239 | break; |
---|
| 2240 | } |
---|
| 2241 | //////////////////// |
---|
| 2242 | case XRAM_RSP_INVAL: // send invalidate request to INIT_CMD FSM |
---|
| 2243 | { |
---|
| 2244 | if( !r_xram_rsp_to_init_cmd_multi_req.read() && |
---|
| 2245 | !r_xram_rsp_to_init_cmd_brdcast_req.read() ) { |
---|
| 2246 | |
---|
| 2247 | bool multi_req = !r_xram_rsp_victim_is_cnt.read(); |
---|
| 2248 | bool last_multi_req = multi_req && (r_xram_rsp_victim_count.read() == 1); |
---|
| 2249 | bool not_last_multi_req = multi_req && (r_xram_rsp_victim_count.read() != 1); |
---|
| 2250 | |
---|
| 2251 | r_xram_rsp_to_init_cmd_multi_req = last_multi_req; |
---|
| 2252 | r_xram_rsp_to_init_cmd_brdcast_req = r_xram_rsp_victim_is_cnt.read(); |
---|
| 2253 | r_xram_rsp_to_init_cmd_nline = r_xram_rsp_victim_nline.read(); |
---|
| 2254 | r_xram_rsp_to_init_cmd_trdid = r_xram_rsp_upt_index; |
---|
| 2255 | xram_rsp_to_init_cmd_fifo_srcid = r_xram_rsp_victim_copy.read(); |
---|
| 2256 | xram_rsp_to_init_cmd_fifo_inst = r_xram_rsp_victim_copy_inst.read(); |
---|
| 2257 | xram_rsp_to_init_cmd_fifo_put = multi_req; |
---|
| 2258 | |
---|
| 2259 | r_xram_rsp_next_ptr = r_xram_rsp_victim_ptr.read(); |
---|
| 2260 | |
---|
| 2261 | if ( r_xram_rsp_victim_dirty ) r_xram_rsp_fsm = XRAM_RSP_WRITE_DIRTY; |
---|
| 2262 | else if (not_last_multi_req) r_xram_rsp_fsm = XRAM_RSP_HEAP_ERASE; |
---|
| 2263 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 2264 | #ifdef IDEBUG |
---|
| 2265 | std::cout << "XRAM_RSP FSM in XRAM_RSP_INVAL state" << std::endl; |
---|
| 2266 | #endif |
---|
| 2267 | } |
---|
| 2268 | break; |
---|
| 2269 | } |
---|
| 2270 | ////////////////////////// |
---|
| 2271 | case XRAM_RSP_WRITE_DIRTY: // send a write request to IXR_CMD FSM |
---|
| 2272 | { |
---|
| 2273 | if ( !r_xram_rsp_to_ixr_cmd_req.read() ) { |
---|
| 2274 | r_xram_rsp_to_ixr_cmd_req = true; |
---|
| 2275 | r_xram_rsp_to_ixr_cmd_nline = r_xram_rsp_victim_nline.read(); |
---|
| 2276 | r_xram_rsp_to_ixr_cmd_trdid = r_xram_rsp_trt_index.read(); |
---|
| 2277 | for(size_t i=0; i<m_words ; i++) { |
---|
| 2278 | r_xram_rsp_to_ixr_cmd_data[i] = r_xram_rsp_victim_data[i]; |
---|
| 2279 | } |
---|
| 2280 | m_cpt_write_dirty++; |
---|
| 2281 | bool multi_req = !r_xram_rsp_victim_is_cnt.read() && r_xram_rsp_victim_inval.read(); |
---|
| 2282 | bool not_last_multi_req = multi_req && (r_xram_rsp_victim_count.read() != 1); |
---|
| 2283 | if ( not_last_multi_req ) r_xram_rsp_fsm = XRAM_RSP_HEAP_ERASE; |
---|
| 2284 | else r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 2285 | #ifdef TDEBUG |
---|
| 2286 | std::cout << "XRAM_RSP FSM in XRAM_RSP_WRITE_DIRTY state" << std::endl; |
---|
| 2287 | #endif |
---|
| 2288 | } |
---|
| 2289 | break; |
---|
| 2290 | } |
---|
| 2291 | ////////////////////////// |
---|
| 2292 | case XRAM_RSP_HEAP_ERASE: // erase the list of copies and sent invalidations |
---|
| 2293 | { |
---|
| 2294 | if( r_alloc_heap_fsm.read() == ALLOC_HEAP_XRAM_RSP ) { |
---|
| 2295 | HeapEntry entry = m_heap_directory.read(r_xram_rsp_next_ptr.read()); |
---|
| 2296 | xram_rsp_to_init_cmd_fifo_srcid = entry.owner.srcid; |
---|
| 2297 | xram_rsp_to_init_cmd_fifo_inst = entry.owner.inst; |
---|
| 2298 | xram_rsp_to_init_cmd_fifo_put = true; |
---|
| 2299 | if( m_xram_rsp_to_init_cmd_inst_fifo.wok() ){ |
---|
| 2300 | r_xram_rsp_next_ptr = entry.next; |
---|
| 2301 | if( entry.next == r_xram_rsp_next_ptr.read() ){ // last copy |
---|
| 2302 | r_xram_rsp_to_init_cmd_multi_req = true; |
---|
| 2303 | r_xram_rsp_fsm = XRAM_RSP_HEAP_LAST; |
---|
| 2304 | } else { |
---|
| 2305 | r_xram_rsp_fsm = XRAM_RSP_HEAP_ERASE; |
---|
| 2306 | } |
---|
| 2307 | } else { |
---|
| 2308 | r_xram_rsp_fsm = XRAM_RSP_HEAP_ERASE; |
---|
| 2309 | } |
---|
| 2310 | } |
---|
| 2311 | break; |
---|
| 2312 | } |
---|
| 2313 | ////////////////////////// |
---|
| 2314 | case XRAM_RSP_HEAP_LAST: // last member of the list |
---|
| 2315 | { |
---|
| 2316 | assert((r_alloc_heap_fsm.read() == ALLOC_HEAP_XRAM_RSP) && |
---|
| 2317 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 2318 | size_t free_pointer = m_heap_directory.next_free_ptr(); |
---|
| 2319 | |
---|
| 2320 | HeapEntry last_entry; |
---|
| 2321 | last_entry.owner.srcid = 0; |
---|
| 2322 | last_entry.owner.inst = false; |
---|
| 2323 | if(m_heap_directory.is_full()){ |
---|
| 2324 | last_entry.next = r_xram_rsp_next_ptr.read(); |
---|
| 2325 | m_heap_directory.unset_full(); |
---|
| 2326 | } else { |
---|
| 2327 | last_entry.next = free_pointer; |
---|
| 2328 | } |
---|
| 2329 | |
---|
| 2330 | m_heap_directory.write_free_ptr(r_xram_rsp_victim_ptr.read()); |
---|
| 2331 | m_heap_directory.write(r_xram_rsp_next_ptr.read(),last_entry); |
---|
| 2332 | |
---|
| 2333 | r_xram_rsp_fsm = XRAM_RSP_IDLE; |
---|
| 2334 | |
---|
| 2335 | break; |
---|
| 2336 | } |
---|
| 2337 | } // end swich r_xram_rsp_fsm |
---|
| 2338 | |
---|
| 2339 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2340 | // CLEANUP FSM |
---|
| 2341 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2342 | // The CLEANUP FSM handles the cleanup request from L1 caches. |
---|
| 2343 | // It accesses the cache directory to update the list of copies. |
---|
| 2344 | // |
---|
| 2345 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2346 | switch ( r_cleanup_fsm.read() ) { |
---|
| 2347 | |
---|
| 2348 | /////////////////// |
---|
| 2349 | case CLEANUP_IDLE: |
---|
| 2350 | { |
---|
| 2351 | |
---|
| 2352 | if ( p_vci_tgt_cleanup.cmdval.read() ) { |
---|
| 2353 | assert( (p_vci_tgt_cleanup.srcid.read() < m_initiators) && |
---|
| 2354 | "VCI_MEM_CACHE error in VCI_MEM_CACHE in the CLEANUP network : The received SRCID is larger than the number of initiators"); |
---|
| 2355 | bool reached = false; |
---|
| 2356 | for ( size_t index = 0 ; index < ncseg && !reached ; index++ ){ |
---|
| 2357 | if ( m_cseg[index]->contains((addr_t)(p_vci_tgt_cleanup.address.read())) ){ |
---|
| 2358 | reached = true; |
---|
| 2359 | } |
---|
| 2360 | } |
---|
| 2361 | if ( (p_vci_tgt_cleanup.cmd.read() == vci_param::CMD_WRITE) && |
---|
[82] | 2362 | (((addr_t)(p_vci_tgt_cleanup.address.read())&0x3) != 0x3) && |
---|
[2] | 2363 | reached) { |
---|
| 2364 | |
---|
| 2365 | m_cpt_cleanup++; |
---|
| 2366 | |
---|
| 2367 | r_cleanup_nline = (addr_t)(m_nline[(vci_addr_t)(p_vci_tgt_cleanup.address.read())]) ; |
---|
| 2368 | r_cleanup_srcid = p_vci_tgt_cleanup.srcid.read(); |
---|
| 2369 | r_cleanup_trdid = p_vci_tgt_cleanup.trdid.read(); |
---|
| 2370 | r_cleanup_pktid = p_vci_tgt_cleanup.pktid.read(); |
---|
| 2371 | |
---|
| 2372 | r_cleanup_fsm = CLEANUP_DIR_LOCK; |
---|
| 2373 | } |
---|
| 2374 | } |
---|
| 2375 | break; |
---|
| 2376 | } |
---|
| 2377 | ////////////////////// |
---|
| 2378 | case CLEANUP_DIR_LOCK: |
---|
| 2379 | { |
---|
| 2380 | if ( r_alloc_dir_fsm.read() == ALLOC_DIR_CLEANUP ) { |
---|
| 2381 | |
---|
| 2382 | // Read the directory |
---|
| 2383 | size_t way = 0; |
---|
| 2384 | addr_t cleanup_address = r_cleanup_nline.read() * m_words * 4; |
---|
| 2385 | DirectoryEntry entry = m_cache_directory.read(cleanup_address , way); |
---|
| 2386 | #ifdef DDEBUG |
---|
| 2387 | std::cout << "In CLEANUP_DIR_LOCK printing the entry of address is : " << std::hex << cleanup_address << std::endl; |
---|
| 2388 | entry.print(); |
---|
| 2389 | std::cout << "done" << std::endl; |
---|
| 2390 | #endif |
---|
| 2391 | r_cleanup_is_cnt = entry.is_cnt; |
---|
| 2392 | r_cleanup_dirty = entry.dirty; |
---|
| 2393 | r_cleanup_tag = entry.tag; |
---|
| 2394 | r_cleanup_lock = entry.lock; |
---|
| 2395 | r_cleanup_inst = entry.inst; |
---|
| 2396 | r_cleanup_way = way; |
---|
| 2397 | r_cleanup_copy = entry.owner.srcid; |
---|
| 2398 | r_cleanup_copy_inst = entry.owner.inst; |
---|
| 2399 | r_cleanup_count = entry.count; |
---|
| 2400 | r_cleanup_ptr = entry.ptr; |
---|
| 2401 | |
---|
| 2402 | |
---|
| 2403 | // In case of hit, the copy must be cleaned in the copies bit-vector |
---|
| 2404 | if( entry.valid){ |
---|
| 2405 | if ( (entry.count==1) || (entry.is_cnt) ) { // no access to the heap |
---|
| 2406 | r_cleanup_fsm = CLEANUP_DIR_WRITE; |
---|
| 2407 | } else { |
---|
| 2408 | r_cleanup_fsm = CLEANUP_HEAP_LOCK; |
---|
| 2409 | } |
---|
| 2410 | } else { |
---|
| 2411 | r_cleanup_fsm = CLEANUP_UPT_LOCK; |
---|
| 2412 | } |
---|
| 2413 | } |
---|
| 2414 | break; |
---|
| 2415 | } |
---|
| 2416 | /////////////////////// |
---|
| 2417 | case CLEANUP_DIR_WRITE: |
---|
| 2418 | { |
---|
| 2419 | assert( (r_alloc_dir_fsm.read() == ALLOC_DIR_CLEANUP ) && |
---|
| 2420 | "MemCache ERROR : Bad DIR allocation"); |
---|
| 2421 | size_t way = r_cleanup_way.read(); |
---|
| 2422 | #define L2 soclib::common::uint32_log2 |
---|
| 2423 | size_t set = m_y[(vci_addr_t)(r_cleanup_nline.read() << (L2(m_words) +2))]; |
---|
| 2424 | #undef L2 |
---|
| 2425 | bool cleanup_inst = r_cleanup_trdid.read() & 0x1; |
---|
| 2426 | bool match_srcid = (r_cleanup_copy.read() == r_cleanup_srcid.read()); |
---|
| 2427 | bool match_inst = (r_cleanup_copy_inst.read() == cleanup_inst); |
---|
| 2428 | bool match = match_srcid && match_inst; |
---|
| 2429 | |
---|
| 2430 | // update the cache directory (for the copies) |
---|
| 2431 | DirectoryEntry entry; |
---|
| 2432 | entry.valid = true; |
---|
| 2433 | entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
| 2434 | entry.dirty = r_cleanup_dirty.read(); |
---|
| 2435 | entry.tag = r_cleanup_tag.read(); |
---|
| 2436 | entry.lock = r_cleanup_lock.read(); |
---|
| 2437 | entry.ptr = r_cleanup_ptr.read(); |
---|
| 2438 | if(r_cleanup_is_cnt.read()) { // Directory is a counter |
---|
| 2439 | entry.count = r_cleanup_count.read() -1; |
---|
| 2440 | if((r_cleanup_count.read()-1) == 0){ |
---|
| 2441 | entry.inst = false; |
---|
| 2442 | } else { |
---|
| 2443 | entry.inst = r_cleanup_inst.read(); |
---|
| 2444 | } |
---|
| 2445 | entry.owner.srcid = 0; |
---|
| 2446 | entry.owner.inst = 0; |
---|
| 2447 | // response to the cache |
---|
| 2448 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2449 | } |
---|
| 2450 | else{ // Directory is a list |
---|
| 2451 | if(match) { // hit |
---|
| 2452 | entry.count = 0; // no more copy |
---|
| 2453 | entry.owner.srcid = 0; |
---|
| 2454 | entry.owner.inst = 0; |
---|
| 2455 | entry.inst = false; |
---|
| 2456 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2457 | } else { // miss |
---|
| 2458 | entry.count = r_cleanup_count.read(); |
---|
| 2459 | entry.owner.srcid = r_cleanup_copy.read(); |
---|
| 2460 | entry.owner.inst = r_cleanup_copy_inst.read(); |
---|
| 2461 | entry.inst = r_cleanup_inst.read(); |
---|
| 2462 | r_cleanup_fsm = CLEANUP_UPT_LOCK; |
---|
| 2463 | } |
---|
| 2464 | } |
---|
| 2465 | m_cache_directory.write(set, way, entry); |
---|
| 2466 | |
---|
| 2467 | break; |
---|
| 2468 | } |
---|
| 2469 | ///////////////// |
---|
| 2470 | case CLEANUP_HEAP_LOCK: |
---|
| 2471 | { |
---|
| 2472 | if(r_alloc_heap_fsm.read() == ALLOC_HEAP_CLEANUP){ |
---|
| 2473 | size_t way = r_cleanup_way.read(); |
---|
| 2474 | #define L2 soclib::common::uint32_log2 |
---|
| 2475 | size_t set = m_y[(vci_addr_t)(r_cleanup_nline.read() << (L2(m_words) +2))]; |
---|
| 2476 | #undef L2 |
---|
| 2477 | HeapEntry heap_entry = m_heap_directory.read(r_cleanup_ptr.read()); |
---|
| 2478 | bool last = (heap_entry.next == r_cleanup_ptr.read()); |
---|
| 2479 | bool cleanup_inst = r_cleanup_trdid.read() & 0x1; |
---|
| 2480 | bool match_dir_srcid = (r_cleanup_copy.read() == r_cleanup_srcid.read()); |
---|
| 2481 | bool match_dir_inst = (r_cleanup_copy_inst.read() == cleanup_inst); |
---|
| 2482 | bool match_dir = match_dir_srcid && match_dir_inst; |
---|
| 2483 | bool match_heap_srcid = (heap_entry.owner.srcid == r_cleanup_srcid.read()); |
---|
| 2484 | bool match_heap_inst = (heap_entry.owner.inst == cleanup_inst); |
---|
| 2485 | bool match_heap = match_heap_srcid && match_heap_inst; |
---|
| 2486 | |
---|
| 2487 | r_cleanup_prev_ptr = r_cleanup_ptr.read(); |
---|
| 2488 | r_cleanup_prev_srcid = heap_entry.owner.srcid; |
---|
| 2489 | r_cleanup_prev_inst = heap_entry.owner.inst; |
---|
| 2490 | |
---|
| 2491 | if(match_dir){ |
---|
| 2492 | DirectoryEntry dir_entry; |
---|
| 2493 | dir_entry.valid = true; |
---|
| 2494 | dir_entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
| 2495 | dir_entry.dirty = r_cleanup_dirty.read(); |
---|
| 2496 | dir_entry.tag = r_cleanup_tag.read(); |
---|
| 2497 | dir_entry.lock = r_cleanup_lock.read(); |
---|
| 2498 | dir_entry.ptr = heap_entry.next; |
---|
| 2499 | dir_entry.count = r_cleanup_count.read()-1; |
---|
| 2500 | dir_entry.owner.srcid = heap_entry.owner.srcid; |
---|
| 2501 | dir_entry.owner.inst = heap_entry.owner.inst; |
---|
| 2502 | dir_entry.inst = r_cleanup_inst.read(); |
---|
| 2503 | m_cache_directory.write(set,way,dir_entry); |
---|
| 2504 | r_cleanup_next_ptr = r_cleanup_ptr.read(); |
---|
| 2505 | r_cleanup_fsm = CLEANUP_HEAP_FREE; |
---|
| 2506 | } |
---|
| 2507 | else if(match_heap){ |
---|
| 2508 | DirectoryEntry dir_entry; |
---|
| 2509 | dir_entry.valid = true; |
---|
| 2510 | dir_entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
| 2511 | dir_entry.dirty = r_cleanup_dirty.read(); |
---|
| 2512 | dir_entry.tag = r_cleanup_tag.read(); |
---|
| 2513 | dir_entry.lock = r_cleanup_lock.read(); |
---|
| 2514 | dir_entry.ptr = heap_entry.next; |
---|
| 2515 | dir_entry.count = r_cleanup_count.read()-1; |
---|
| 2516 | dir_entry.owner.srcid = r_cleanup_copy.read(); |
---|
| 2517 | dir_entry.owner.inst = r_cleanup_copy_inst.read(); |
---|
| 2518 | dir_entry.inst = r_cleanup_inst.read(); |
---|
| 2519 | m_cache_directory.write(set,way,dir_entry); |
---|
| 2520 | r_cleanup_next_ptr = r_cleanup_ptr.read(); |
---|
| 2521 | r_cleanup_fsm = CLEANUP_HEAP_FREE; |
---|
| 2522 | } |
---|
| 2523 | else{ |
---|
| 2524 | if(!last){ |
---|
| 2525 | DirectoryEntry dir_entry; |
---|
| 2526 | dir_entry.valid = true; |
---|
| 2527 | dir_entry.is_cnt = r_cleanup_is_cnt.read(); |
---|
| 2528 | dir_entry.dirty = r_cleanup_dirty.read(); |
---|
| 2529 | dir_entry.tag = r_cleanup_tag.read(); |
---|
| 2530 | dir_entry.lock = r_cleanup_lock.read(); |
---|
| 2531 | dir_entry.ptr = r_cleanup_ptr.read(); |
---|
| 2532 | dir_entry.count = r_cleanup_count.read()-1; |
---|
| 2533 | dir_entry.owner.srcid = r_cleanup_copy.read(); |
---|
| 2534 | dir_entry.owner.inst = r_cleanup_copy_inst.read(); |
---|
| 2535 | dir_entry.inst = r_cleanup_inst.read(); |
---|
| 2536 | m_cache_directory.write(set,way,dir_entry); |
---|
| 2537 | |
---|
| 2538 | r_cleanup_next_ptr = heap_entry.next; |
---|
| 2539 | r_cleanup_fsm = CLEANUP_HEAP_SEARCH; |
---|
| 2540 | |
---|
| 2541 | } else{ |
---|
| 2542 | assert(false && "MemCache ERROR : CLEANUP hit but line not shared"); |
---|
| 2543 | } |
---|
| 2544 | } |
---|
| 2545 | } |
---|
| 2546 | break; |
---|
| 2547 | } |
---|
| 2548 | ///////////////// |
---|
| 2549 | case CLEANUP_HEAP_SEARCH: |
---|
| 2550 | { |
---|
| 2551 | assert( (r_alloc_heap_fsm.read() == ALLOC_HEAP_CLEANUP) && |
---|
| 2552 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 2553 | HeapEntry heap_entry = m_heap_directory.read(r_cleanup_next_ptr.read()); |
---|
| 2554 | bool last = (heap_entry.next == r_cleanup_next_ptr.read()); |
---|
| 2555 | bool cleanup_inst = r_cleanup_trdid.read() & 0x1; |
---|
| 2556 | bool match_heap_srcid = (heap_entry.owner.srcid == r_cleanup_srcid.read()); |
---|
| 2557 | bool match_heap_inst = (heap_entry.owner.inst == cleanup_inst); |
---|
| 2558 | bool match_heap = match_heap_srcid && match_heap_inst; |
---|
| 2559 | |
---|
| 2560 | if(match_heap){ |
---|
| 2561 | r_cleanup_ptr = heap_entry.next; // reuse ressources |
---|
| 2562 | r_cleanup_fsm = CLEANUP_HEAP_CLEAN; |
---|
| 2563 | } |
---|
| 2564 | else{ |
---|
| 2565 | if(last) { |
---|
| 2566 | assert(false && "MemCache ERROR : CLEANUP hit but line not shared"); |
---|
| 2567 | } else { |
---|
| 2568 | r_cleanup_prev_ptr = r_cleanup_next_ptr.read(); |
---|
| 2569 | r_cleanup_prev_srcid = heap_entry.owner.srcid; |
---|
| 2570 | r_cleanup_prev_inst = heap_entry.owner.inst; |
---|
| 2571 | r_cleanup_next_ptr = heap_entry.next; |
---|
| 2572 | r_cleanup_fsm = CLEANUP_HEAP_SEARCH; |
---|
| 2573 | } |
---|
| 2574 | } |
---|
| 2575 | |
---|
| 2576 | break; |
---|
| 2577 | } |
---|
| 2578 | ///////////////// |
---|
| 2579 | case CLEANUP_HEAP_CLEAN: |
---|
| 2580 | { |
---|
| 2581 | assert( (r_alloc_heap_fsm.read() == ALLOC_HEAP_CLEANUP) && |
---|
| 2582 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 2583 | bool last = (r_cleanup_next_ptr.read() == r_cleanup_ptr.read()); |
---|
| 2584 | HeapEntry heap_entry; |
---|
| 2585 | heap_entry.owner.srcid = r_cleanup_prev_srcid.read(); |
---|
| 2586 | heap_entry.owner.inst = r_cleanup_prev_inst.read(); |
---|
| 2587 | if(last){ // this is the last entry of the list of copies |
---|
| 2588 | heap_entry.next = r_cleanup_prev_ptr.read(); |
---|
| 2589 | } else { // this is not the last entry |
---|
| 2590 | heap_entry.next = r_cleanup_ptr.read(); |
---|
| 2591 | } |
---|
| 2592 | m_heap_directory.write(r_cleanup_prev_ptr.read(),heap_entry); |
---|
| 2593 | r_cleanup_fsm = CLEANUP_HEAP_FREE; |
---|
| 2594 | break; |
---|
| 2595 | } |
---|
| 2596 | ///////////////// |
---|
| 2597 | case CLEANUP_HEAP_FREE: |
---|
| 2598 | { |
---|
| 2599 | assert( (r_alloc_heap_fsm.read() == ALLOC_HEAP_CLEANUP) && |
---|
| 2600 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 2601 | HeapEntry heap_entry; |
---|
| 2602 | heap_entry.owner.srcid = 0; |
---|
| 2603 | heap_entry.owner.inst = false; |
---|
| 2604 | if(m_heap_directory.is_full()){ |
---|
| 2605 | heap_entry.next = r_cleanup_next_ptr.read(); |
---|
| 2606 | } else { |
---|
| 2607 | heap_entry.next = m_heap_directory.next_free_ptr(); |
---|
| 2608 | } |
---|
| 2609 | m_heap_directory.write(r_cleanup_next_ptr.read(),heap_entry); |
---|
| 2610 | m_heap_directory.write_free_ptr(r_cleanup_next_ptr.read()); |
---|
| 2611 | m_heap_directory.unset_full(); |
---|
| 2612 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2613 | break; |
---|
| 2614 | } |
---|
| 2615 | ///////////////// |
---|
| 2616 | case CLEANUP_UPT_LOCK: |
---|
| 2617 | { |
---|
| 2618 | if( r_alloc_upt_fsm.read() == ALLOC_UPT_CLEANUP ) |
---|
| 2619 | { |
---|
| 2620 | size_t index; |
---|
| 2621 | bool hit_inval; |
---|
| 2622 | hit_inval = m_update_tab.search_inval(r_cleanup_nline.read(),index); |
---|
| 2623 | if(!hit_inval) { |
---|
| 2624 | #ifdef DEBUG_VCI_MEM_CACHE |
---|
| 2625 | 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; |
---|
| 2626 | #endif |
---|
| 2627 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2628 | } else { |
---|
| 2629 | r_cleanup_write_srcid = m_update_tab.srcid(index); |
---|
| 2630 | r_cleanup_write_trdid = m_update_tab.trdid(index); |
---|
| 2631 | r_cleanup_write_pktid = m_update_tab.pktid(index); |
---|
| 2632 | r_cleanup_need_rsp = m_update_tab.need_rsp(index); |
---|
| 2633 | r_cleanup_fsm = CLEANUP_UPT_WRITE; |
---|
| 2634 | } |
---|
| 2635 | r_cleanup_index.write(index) ; |
---|
| 2636 | } |
---|
| 2637 | break; |
---|
| 2638 | } |
---|
| 2639 | ///////////////// |
---|
| 2640 | case CLEANUP_UPT_WRITE: |
---|
| 2641 | { |
---|
| 2642 | size_t count = 0; |
---|
| 2643 | m_update_tab.decrement(r_cleanup_index.read(), count); // &count |
---|
| 2644 | if(count == 0){ |
---|
| 2645 | m_update_tab.clear(r_cleanup_index.read()); |
---|
| 2646 | #ifdef IDEBUG |
---|
| 2647 | std::cout << sc_time_stamp() << " " << name() << " CLEANUP_UPT_WRITE update table : " << std::endl; |
---|
| 2648 | m_update_tab.print(); |
---|
| 2649 | #endif |
---|
| 2650 | |
---|
| 2651 | if(r_cleanup_need_rsp.read()){ |
---|
| 2652 | r_cleanup_fsm = CLEANUP_WRITE_RSP ; |
---|
| 2653 | } else { |
---|
| 2654 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2655 | } |
---|
| 2656 | } else { |
---|
| 2657 | r_cleanup_fsm = CLEANUP_RSP ; |
---|
| 2658 | } |
---|
| 2659 | break; |
---|
| 2660 | } |
---|
| 2661 | ///////////////// |
---|
| 2662 | case CLEANUP_WRITE_RSP: |
---|
| 2663 | { |
---|
| 2664 | if( !r_cleanup_to_tgt_rsp_req.read()) { |
---|
| 2665 | r_cleanup_to_tgt_rsp_req = true; |
---|
| 2666 | r_cleanup_to_tgt_rsp_srcid = r_cleanup_write_srcid.read(); |
---|
| 2667 | r_cleanup_to_tgt_rsp_trdid = r_cleanup_write_trdid.read(); |
---|
| 2668 | r_cleanup_to_tgt_rsp_pktid = r_cleanup_write_pktid.read(); |
---|
| 2669 | r_cleanup_fsm = CLEANUP_RSP; |
---|
| 2670 | } |
---|
| 2671 | break; |
---|
| 2672 | } |
---|
| 2673 | ///////////////// |
---|
| 2674 | case CLEANUP_RSP: |
---|
| 2675 | { |
---|
| 2676 | if(p_vci_tgt_cleanup.rspack) |
---|
| 2677 | r_cleanup_fsm = CLEANUP_IDLE; |
---|
| 2678 | break; |
---|
| 2679 | } |
---|
| 2680 | } // end switch cleanup fsm |
---|
| 2681 | |
---|
| 2682 | |
---|
| 2683 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2684 | // LLSC FSM |
---|
| 2685 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 2686 | // The LLSC FSM handles the LL & SC atomic access. |
---|
| 2687 | // |
---|
| 2688 | // For a LL : |
---|
| 2689 | // It access the directory to check hit / miss. |
---|
| 2690 | // - In case of hit, the LL request is registered in the Atomic Table and the |
---|
| 2691 | // response is sent to the requesting processor. |
---|
| 2692 | // - In case of miss, the LLSC FSM accesses the transaction table. |
---|
| 2693 | // If a read transaction to the XRAM for this line already exists, |
---|
| 2694 | // or if the transaction table is full, it returns to IDLE state. |
---|
| 2695 | // Otherwise, a new transaction to the XRAM is initiated. |
---|
| 2696 | // In both cases, the LL request is not consumed in the FIFO. |
---|
| 2697 | // |
---|
| 2698 | // For a SC : |
---|
| 2699 | // It access the directory to check hit / miss. |
---|
| 2700 | // - In case of hit, the Atomic Table is checked and the proper response |
---|
| 2701 | // (true or false is sent to the requesting processor. |
---|
| 2702 | // - In case of miss, the LLSC FSM accesses the transaction table. |
---|
| 2703 | // If a read transaction to the XRAM for this line already exists, |
---|
| 2704 | // or if the transaction table is full, it returns to IDLE state. |
---|
| 2705 | // Otherwise, a new transaction to the XRAM is initiated. |
---|
| 2706 | // In both cases, the SC request is not consumed in the FIFO. |
---|
| 2707 | ///////////////////////////////////////////////////////////////////// |
---|
| 2708 | |
---|
| 2709 | switch ( r_llsc_fsm.read() ) { |
---|
| 2710 | |
---|
| 2711 | /////////////// |
---|
| 2712 | case LLSC_IDLE: // test LL / SC |
---|
| 2713 | { |
---|
| 2714 | if( m_cmd_llsc_addr_fifo.rok() ) { |
---|
| 2715 | if(m_cmd_llsc_sc_fifo.read()){ |
---|
| 2716 | m_cpt_sc++; |
---|
| 2717 | r_llsc_fsm = SC_DIR_LOCK; |
---|
| 2718 | } |
---|
| 2719 | else{ |
---|
| 2720 | m_cpt_ll++; |
---|
| 2721 | r_llsc_fsm = LL_DIR_LOCK; |
---|
| 2722 | } |
---|
| 2723 | } |
---|
| 2724 | break; |
---|
| 2725 | } |
---|
| 2726 | ///////////////// |
---|
| 2727 | case LL_DIR_LOCK: // check directory for hit / miss |
---|
| 2728 | { |
---|
| 2729 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_LLSC ) { |
---|
| 2730 | size_t way = 0; |
---|
| 2731 | DirectoryEntry entry(m_cache_directory.read(m_cmd_llsc_addr_fifo.read(), way)); |
---|
| 2732 | r_llsc_is_cnt = entry.is_cnt; |
---|
| 2733 | r_llsc_dirty = entry.dirty; |
---|
| 2734 | r_llsc_inst = entry.inst; |
---|
| 2735 | r_llsc_tag = entry.tag; |
---|
| 2736 | r_llsc_way = way; |
---|
| 2737 | r_llsc_copy = entry.owner.srcid; |
---|
| 2738 | r_llsc_copy_inst = entry.owner.inst; |
---|
| 2739 | r_llsc_count = entry.count; |
---|
| 2740 | r_llsc_ptr = entry.ptr; |
---|
| 2741 | |
---|
| 2742 | // set Atomic Table |
---|
| 2743 | m_atomic_tab.set(m_cmd_llsc_srcid_fifo.read(), m_cmd_llsc_addr_fifo.read()); |
---|
| 2744 | |
---|
| 2745 | if ( entry.valid ) r_llsc_fsm = LL_DIR_HIT; |
---|
| 2746 | else r_llsc_fsm = LLSC_TRT_LOCK; |
---|
| 2747 | } |
---|
| 2748 | break; |
---|
| 2749 | } |
---|
| 2750 | //////////////// |
---|
| 2751 | case LL_DIR_HIT: // read hit : update the memory cache |
---|
| 2752 | { |
---|
| 2753 | size_t way = r_llsc_way.read(); |
---|
| 2754 | size_t set = m_y[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2755 | size_t word = m_x[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2756 | |
---|
| 2757 | // update directory (lock bit & copies) |
---|
| 2758 | DirectoryEntry entry; |
---|
| 2759 | entry.valid = true; |
---|
| 2760 | entry.is_cnt = r_llsc_is_cnt.read(); |
---|
| 2761 | entry.dirty = r_llsc_dirty.read(); |
---|
| 2762 | entry.lock = true; |
---|
| 2763 | entry.inst = r_llsc_inst.read(); |
---|
| 2764 | entry.tag = r_llsc_tag.read(); |
---|
| 2765 | entry.owner.srcid = r_llsc_copy.read(); |
---|
| 2766 | entry.owner.inst = r_llsc_copy_inst.read(); |
---|
| 2767 | entry.count = r_llsc_count.read(); |
---|
| 2768 | entry.ptr = r_llsc_ptr.read(); |
---|
| 2769 | m_cache_directory.write(set, way, entry); |
---|
| 2770 | |
---|
| 2771 | // read data in cache |
---|
| 2772 | r_llsc_data = m_cache_data[way][set][word]; |
---|
| 2773 | |
---|
| 2774 | r_llsc_fsm = LL_RSP; |
---|
| 2775 | break; |
---|
| 2776 | } |
---|
| 2777 | //////////// |
---|
| 2778 | case LL_RSP: // request the TGT_RSP FSM to return data |
---|
| 2779 | { |
---|
| 2780 | if ( !r_llsc_to_tgt_rsp_req ) { |
---|
| 2781 | cmd_llsc_fifo_get = true; |
---|
| 2782 | r_llsc_to_tgt_rsp_data = r_llsc_data.read(); |
---|
| 2783 | r_llsc_to_tgt_rsp_srcid = m_cmd_llsc_srcid_fifo.read(); |
---|
| 2784 | r_llsc_to_tgt_rsp_trdid = m_cmd_llsc_trdid_fifo.read(); |
---|
| 2785 | r_llsc_to_tgt_rsp_pktid = m_cmd_llsc_pktid_fifo.read(); |
---|
| 2786 | r_llsc_to_tgt_rsp_req = true; |
---|
| 2787 | r_llsc_fsm = LLSC_IDLE; |
---|
| 2788 | } |
---|
| 2789 | break; |
---|
| 2790 | } |
---|
| 2791 | ///////////////// |
---|
| 2792 | case SC_DIR_LOCK: |
---|
| 2793 | { |
---|
| 2794 | if( r_alloc_dir_fsm.read() == ALLOC_DIR_LLSC ) { |
---|
| 2795 | size_t way = 0; |
---|
| 2796 | DirectoryEntry entry(m_cache_directory.read(m_cmd_llsc_addr_fifo.read(), way)); |
---|
| 2797 | bool ok = m_atomic_tab.isatomic(m_cmd_llsc_srcid_fifo.read(),m_cmd_llsc_addr_fifo.read()); |
---|
| 2798 | if( ok ) { |
---|
| 2799 | r_llsc_is_cnt = entry.is_cnt; |
---|
| 2800 | r_llsc_dirty = entry.dirty; |
---|
| 2801 | r_llsc_tag = entry.tag; |
---|
| 2802 | r_llsc_way = way; |
---|
| 2803 | r_llsc_copy = entry.owner.srcid; |
---|
| 2804 | r_llsc_copy_inst= entry.owner.inst; |
---|
| 2805 | r_llsc_inst = entry.inst; |
---|
| 2806 | r_llsc_ptr = entry.ptr; |
---|
| 2807 | r_llsc_count = entry.count; |
---|
| 2808 | if ( entry.valid ){ |
---|
| 2809 | if((entry.is_cnt && entry.count) || entry.inst) { |
---|
| 2810 | r_llsc_fsm = SC_TRT_LOCK; |
---|
| 2811 | } else { |
---|
| 2812 | r_llsc_fsm = SC_DIR_HIT; |
---|
| 2813 | } |
---|
| 2814 | } |
---|
| 2815 | else r_llsc_fsm = LLSC_TRT_LOCK; |
---|
| 2816 | } else { |
---|
| 2817 | r_llsc_fsm = SC_RSP_FALSE; |
---|
| 2818 | } |
---|
| 2819 | } |
---|
| 2820 | break; |
---|
| 2821 | } |
---|
| 2822 | //////////////// |
---|
| 2823 | case SC_DIR_HIT: |
---|
| 2824 | { |
---|
| 2825 | size_t way = r_llsc_way.read(); |
---|
| 2826 | size_t set = m_y[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2827 | size_t word = m_x[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2828 | |
---|
| 2829 | // update directory (lock & dirty bits |
---|
| 2830 | DirectoryEntry entry; |
---|
| 2831 | entry.valid = true; |
---|
| 2832 | entry.is_cnt = r_llsc_is_cnt.read(); |
---|
| 2833 | entry.dirty = true; |
---|
| 2834 | entry.lock = true; |
---|
| 2835 | entry.inst = r_llsc_inst.read(); |
---|
| 2836 | entry.tag = r_llsc_tag.read(); |
---|
| 2837 | entry.owner.srcid = r_llsc_copy.read(); |
---|
| 2838 | entry.owner.inst = r_llsc_copy_inst.read(); |
---|
| 2839 | entry.count = r_llsc_count.read(); |
---|
| 2840 | entry.ptr = r_llsc_ptr.read(); |
---|
| 2841 | m_cache_directory.write(set, way, entry); |
---|
| 2842 | |
---|
| 2843 | if(!r_llsc_count.read()){ // no update |
---|
| 2844 | // write data in cache |
---|
| 2845 | m_cache_data[way][set][word] = m_cmd_llsc_wdata_fifo.read(); |
---|
| 2846 | // reset Atomic Table |
---|
| 2847 | m_atomic_tab.reset(m_cmd_llsc_addr_fifo.read()); |
---|
| 2848 | } |
---|
| 2849 | |
---|
| 2850 | if(r_llsc_count.read()) { // Shared line |
---|
[7] | 2851 | if( !r_llsc_to_init_cmd_multi_req.read() && |
---|
| 2852 | !r_llsc_to_init_cmd_brdcast_req.read() ) |
---|
| 2853 | r_llsc_fsm = SC_UPT_LOCK; |
---|
| 2854 | else |
---|
| 2855 | r_llsc_fsm = SC_WAIT; |
---|
[2] | 2856 | } else { |
---|
| 2857 | r_llsc_fsm = SC_RSP_TRUE; |
---|
| 2858 | } |
---|
| 2859 | break; |
---|
| 2860 | } |
---|
| 2861 | ///////////////////// |
---|
| 2862 | case SC_UPT_LOCK: // Try to register the request in Update Table |
---|
| 2863 | { |
---|
| 2864 | |
---|
| 2865 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_LLSC ) { |
---|
| 2866 | size_t way = r_llsc_way.read(); |
---|
| 2867 | size_t set = m_y[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2868 | size_t word = m_x[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2869 | bool wok = false; |
---|
| 2870 | size_t index = 0; |
---|
| 2871 | size_t srcid = m_cmd_llsc_srcid_fifo.read(); |
---|
| 2872 | size_t trdid = m_cmd_llsc_trdid_fifo.read(); |
---|
| 2873 | size_t pktid = m_cmd_llsc_pktid_fifo.read(); |
---|
| 2874 | addr_t nline = m_nline[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2875 | size_t nb_copies = r_llsc_count.read(); |
---|
| 2876 | |
---|
| 2877 | wok =m_update_tab.set(true, // it's an update transaction |
---|
| 2878 | false, // it's not a broadcast |
---|
| 2879 | true, // it needs a response |
---|
| 2880 | srcid, |
---|
| 2881 | trdid, |
---|
| 2882 | pktid, |
---|
| 2883 | nline, |
---|
| 2884 | nb_copies, |
---|
| 2885 | index); |
---|
| 2886 | if(wok){ |
---|
| 2887 | // write data in cache |
---|
| 2888 | m_cache_data[way][set][word] = m_cmd_llsc_wdata_fifo.read(); |
---|
| 2889 | // reset Atomic Table |
---|
| 2890 | m_atomic_tab.reset(m_cmd_llsc_addr_fifo.read()); |
---|
| 2891 | } |
---|
| 2892 | #ifdef IDEBUG |
---|
| 2893 | if(wok){ |
---|
| 2894 | std::cout << sc_time_stamp() << " " << name() << " SC_UPT_LOCK update table : " << std::endl; |
---|
| 2895 | m_update_tab.print(); |
---|
| 2896 | } |
---|
| 2897 | #endif |
---|
| 2898 | r_llsc_upt_index = index; |
---|
| 2899 | // releases the lock protecting the Update Table and the Directory if no entry... |
---|
| 2900 | if ( wok ) r_llsc_fsm = SC_HEAP_LOCK; |
---|
| 2901 | else r_llsc_fsm = SC_WAIT; |
---|
| 2902 | } |
---|
| 2903 | break; |
---|
| 2904 | } |
---|
| 2905 | //////////////////// |
---|
| 2906 | case SC_WAIT: // release all locks |
---|
| 2907 | { |
---|
| 2908 | r_llsc_fsm = SC_DIR_LOCK; |
---|
| 2909 | break; |
---|
| 2910 | } |
---|
| 2911 | //////////////////// |
---|
| 2912 | case SC_HEAP_LOCK: // lock the heap |
---|
| 2913 | { |
---|
| 2914 | if( r_alloc_heap_fsm.read() == ALLOC_HEAP_LLSC ){ |
---|
| 2915 | r_llsc_fsm = SC_UPT_REQ; |
---|
| 2916 | } |
---|
| 2917 | break; |
---|
| 2918 | } |
---|
| 2919 | //////////////////// |
---|
| 2920 | case SC_UPT_REQ: // Request the update |
---|
| 2921 | { |
---|
| 2922 | assert( (r_alloc_heap_fsm.read() == ALLOC_HEAP_LLSC) && |
---|
| 2923 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 2924 | if( !r_llsc_to_init_cmd_multi_req.read() && |
---|
| 2925 | !r_llsc_to_init_cmd_brdcast_req.read() ){ |
---|
| 2926 | r_llsc_to_init_cmd_brdcast_req = false; |
---|
| 2927 | r_llsc_to_init_cmd_trdid = r_llsc_upt_index.read(); |
---|
| 2928 | r_llsc_to_init_cmd_nline = m_nline[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2929 | r_llsc_to_init_cmd_index = m_x[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2930 | r_llsc_to_init_cmd_wdata = m_cmd_llsc_wdata_fifo.read(); |
---|
| 2931 | |
---|
| 2932 | // We put the first copy in the fifo |
---|
| 2933 | llsc_to_init_cmd_fifo_put = true; |
---|
| 2934 | llsc_to_init_cmd_fifo_inst = r_llsc_copy_inst.read(); |
---|
| 2935 | llsc_to_init_cmd_fifo_srcid = r_llsc_copy.read(); |
---|
| 2936 | if(r_llsc_count.read() == 1){ |
---|
| 2937 | r_llsc_fsm = LLSC_IDLE; |
---|
| 2938 | cmd_llsc_fifo_get = true; |
---|
| 2939 | r_llsc_to_init_cmd_multi_req = true; |
---|
| 2940 | } else { |
---|
| 2941 | r_llsc_fsm = SC_UPDATE; |
---|
| 2942 | } |
---|
| 2943 | } |
---|
| 2944 | break; |
---|
| 2945 | } |
---|
| 2946 | ////////////////// |
---|
| 2947 | case SC_UPDATE: // send a multi-update request to INIT_CMD fsm |
---|
| 2948 | { |
---|
| 2949 | assert( (r_alloc_heap_fsm.read() == ALLOC_HEAP_LLSC) && |
---|
| 2950 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 2951 | HeapEntry entry = m_heap_directory.read(r_llsc_ptr.read()); |
---|
| 2952 | llsc_to_init_cmd_fifo_inst = entry.owner.inst; |
---|
| 2953 | llsc_to_init_cmd_fifo_srcid = entry.owner.srcid; |
---|
| 2954 | llsc_to_init_cmd_fifo_put = true; |
---|
| 2955 | |
---|
| 2956 | if( m_llsc_to_init_cmd_inst_fifo.wok() ){ |
---|
| 2957 | r_llsc_ptr = entry.next; |
---|
| 2958 | if( entry.next == r_llsc_ptr.read() ) { // last copy |
---|
| 2959 | r_llsc_to_init_cmd_multi_req = true; |
---|
| 2960 | r_llsc_fsm = LLSC_IDLE; // Response will be sent after receiving |
---|
| 2961 | // all update responses |
---|
| 2962 | cmd_llsc_fifo_get = true; |
---|
| 2963 | } else { |
---|
| 2964 | r_llsc_fsm = SC_UPDATE; |
---|
| 2965 | } |
---|
| 2966 | } else { |
---|
| 2967 | r_llsc_fsm = SC_UPDATE; |
---|
| 2968 | } |
---|
| 2969 | |
---|
| 2970 | break; |
---|
| 2971 | } |
---|
| 2972 | ////////////////// |
---|
| 2973 | case SC_TRT_LOCK: |
---|
| 2974 | { |
---|
| 2975 | if( r_alloc_trt_fsm.read() == ALLOC_TRT_LLSC ) { |
---|
| 2976 | if( !r_llsc_to_ixr_cmd_req ) { // we can transfer the data to the buffer |
---|
| 2977 | size_t way = r_llsc_way.read(); |
---|
| 2978 | size_t set = m_y[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 2979 | for(size_t i = 0; i<m_words; i++){ |
---|
| 2980 | if(i==m_x[(vci_addr_t)m_cmd_llsc_addr_fifo.read()]) { |
---|
| 2981 | r_llsc_to_ixr_cmd_data[i] = m_cmd_llsc_wdata_fifo.read(); |
---|
| 2982 | } else { |
---|
| 2983 | r_llsc_to_ixr_cmd_data[i] = m_cache_data[way][set][i]; |
---|
| 2984 | } |
---|
| 2985 | } |
---|
| 2986 | size_t wok_index = 0; |
---|
| 2987 | bool wok = !m_transaction_tab.full(wok_index); |
---|
| 2988 | if ( wok ) { // set a new entry in TRT |
---|
| 2989 | r_llsc_trt_index = wok_index; |
---|
| 2990 | r_llsc_fsm = SC_INVAL_LOCK; |
---|
| 2991 | } else { |
---|
| 2992 | r_llsc_fsm = SC_WAIT; |
---|
| 2993 | } |
---|
| 2994 | } else { |
---|
| 2995 | r_llsc_fsm = SC_WAIT; |
---|
| 2996 | } |
---|
| 2997 | } |
---|
| 2998 | break; |
---|
| 2999 | } |
---|
| 3000 | ////////////////// |
---|
| 3001 | case SC_INVAL_LOCK: |
---|
| 3002 | { |
---|
| 3003 | if ( r_alloc_upt_fsm.read() == ALLOC_UPT_LLSC ) { |
---|
| 3004 | bool wok = false; |
---|
| 3005 | size_t index = 0; |
---|
| 3006 | size_t srcid = m_cmd_llsc_srcid_fifo.read(); |
---|
| 3007 | size_t trdid = m_cmd_llsc_trdid_fifo.read(); |
---|
| 3008 | size_t pktid = m_cmd_llsc_pktid_fifo.read(); |
---|
| 3009 | addr_t nline = m_nline[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 3010 | size_t nb_copies = r_llsc_count.read(); |
---|
| 3011 | |
---|
| 3012 | wok =m_update_tab.set(false, // it's an inval transaction |
---|
| 3013 | true, // it's a broadcast |
---|
| 3014 | true, // it needs a response |
---|
| 3015 | srcid, |
---|
| 3016 | trdid, |
---|
| 3017 | pktid, |
---|
| 3018 | nline, |
---|
| 3019 | nb_copies, |
---|
| 3020 | index); |
---|
| 3021 | #ifdef IDEBUG |
---|
| 3022 | if(wok){ |
---|
| 3023 | std::cout << sc_time_stamp() << " " << name() << " LLSC_INVAL_LOCK update table : " << std::endl; |
---|
| 3024 | m_update_tab.print(); |
---|
| 3025 | } |
---|
| 3026 | #endif |
---|
| 3027 | r_llsc_upt_index = index; |
---|
| 3028 | // releases the lock protecting Update Table if no entry... |
---|
| 3029 | if ( wok ) r_llsc_fsm = SC_DIR_INVAL; |
---|
| 3030 | else r_llsc_fsm = SC_WAIT; |
---|
| 3031 | } |
---|
| 3032 | break; |
---|
| 3033 | } |
---|
| 3034 | ////////////////// |
---|
| 3035 | case SC_DIR_INVAL: |
---|
| 3036 | { |
---|
| 3037 | if ( (r_alloc_trt_fsm.read() == ALLOC_TRT_LLSC ) && |
---|
| 3038 | (r_alloc_upt_fsm.read() == ALLOC_UPT_LLSC ) && |
---|
| 3039 | (r_alloc_dir_fsm.read() == ALLOC_DIR_LLSC )) |
---|
| 3040 | { |
---|
| 3041 | m_transaction_tab.set(r_llsc_trt_index.read(), |
---|
| 3042 | false, // write request to XRAM |
---|
| 3043 | m_nline[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())], |
---|
| 3044 | 0, |
---|
| 3045 | 0, |
---|
| 3046 | 0, |
---|
| 3047 | false, // not a processor read |
---|
| 3048 | 0, // not a single word |
---|
| 3049 | 0, // word index |
---|
| 3050 | std::vector<be_t>(m_words,0), |
---|
| 3051 | std::vector<data_t>(m_words,0)); |
---|
| 3052 | #ifdef TDEBUG |
---|
| 3053 | std::cout << sc_time_stamp() << " " << name() << " SC_DIR_INVAL transaction table : " << std::endl; |
---|
| 3054 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 3055 | m_transaction_tab.print(i); |
---|
| 3056 | #endif |
---|
| 3057 | // reset Atomic Table |
---|
| 3058 | m_atomic_tab.reset(m_cmd_llsc_addr_fifo.read()); |
---|
| 3059 | |
---|
| 3060 | // invalidate directory entry |
---|
| 3061 | DirectoryEntry entry; |
---|
| 3062 | entry.valid = false; |
---|
| 3063 | entry.dirty = false; |
---|
| 3064 | entry.tag = 0; |
---|
| 3065 | entry.is_cnt = false; |
---|
| 3066 | entry.lock = false; |
---|
| 3067 | // entry.d_copies = 0; |
---|
| 3068 | // entry.i_copies = 0; |
---|
| 3069 | entry.count = 0; |
---|
| 3070 | size_t set = m_y[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 3071 | size_t way = r_llsc_way.read(); |
---|
| 3072 | m_cache_directory.write(set, way, entry); |
---|
| 3073 | |
---|
| 3074 | r_llsc_fsm = SC_INVAL; |
---|
| 3075 | } else { |
---|
| 3076 | assert(false && "LOCK ERROR in LLSC_FSM, STATE = LLSC_DIR_INVAL"); |
---|
| 3077 | } |
---|
| 3078 | |
---|
| 3079 | break; |
---|
| 3080 | |
---|
| 3081 | } |
---|
| 3082 | ////////////////// |
---|
| 3083 | case SC_INVAL: |
---|
| 3084 | { |
---|
| 3085 | if ( !r_llsc_to_init_cmd_multi_req.read() && |
---|
| 3086 | !r_llsc_to_init_cmd_brdcast_req.read()) { |
---|
| 3087 | r_llsc_to_init_cmd_multi_req = false; |
---|
| 3088 | r_llsc_to_init_cmd_brdcast_req = true; |
---|
| 3089 | r_llsc_to_init_cmd_trdid = r_llsc_upt_index.read(); |
---|
| 3090 | r_llsc_to_init_cmd_nline = m_nline[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 3091 | r_llsc_to_init_cmd_index = 0; |
---|
| 3092 | r_llsc_to_init_cmd_wdata = 0; |
---|
| 3093 | |
---|
| 3094 | r_llsc_fsm = SC_XRAM_SEND; |
---|
| 3095 | // all update responses |
---|
| 3096 | } |
---|
| 3097 | |
---|
| 3098 | break; |
---|
| 3099 | } |
---|
| 3100 | ////////////////// |
---|
| 3101 | case SC_XRAM_SEND: |
---|
| 3102 | { |
---|
| 3103 | if ( !r_llsc_to_ixr_cmd_req ) { |
---|
| 3104 | r_llsc_to_ixr_cmd_req = true; |
---|
| 3105 | r_llsc_to_ixr_cmd_write = true; |
---|
| 3106 | r_llsc_to_ixr_cmd_nline = m_nline[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 3107 | r_llsc_to_ixr_cmd_trdid = r_llsc_trt_index.read(); |
---|
| 3108 | if( r_llsc_is_cnt.read() || |
---|
| 3109 | ((!r_llsc_is_cnt.read()) && (r_llsc_count.read()==1)) ){ |
---|
| 3110 | r_llsc_fsm = LLSC_IDLE; |
---|
| 3111 | cmd_llsc_fifo_get = true; |
---|
| 3112 | } else { |
---|
| 3113 | r_llsc_fsm = SC_HEAP_ERASE; |
---|
| 3114 | r_llsc_next_ptr = r_llsc_ptr.read(); |
---|
| 3115 | } |
---|
| 3116 | } else { |
---|
| 3117 | assert( false && "MEM_CACHE, LLSC FSM : SC_XRAM_SEND state : the request should not have been previously set"); |
---|
| 3118 | } |
---|
| 3119 | break; |
---|
| 3120 | } |
---|
| 3121 | ////////////////// |
---|
| 3122 | case SC_HEAP_ERASE: |
---|
| 3123 | { |
---|
| 3124 | if(r_alloc_heap_fsm.read() == ALLOC_HEAP_LLSC){ |
---|
| 3125 | HeapEntry next_entry = m_heap_directory.read(r_llsc_next_ptr.read()); |
---|
| 3126 | if( next_entry.next == r_llsc_next_ptr.read()){ |
---|
| 3127 | r_write_fsm = SC_HEAP_LAST; |
---|
| 3128 | } else { |
---|
| 3129 | r_llsc_next_ptr = next_entry.next; |
---|
| 3130 | r_llsc_fsm = SC_HEAP_ERASE; |
---|
| 3131 | } |
---|
| 3132 | } |
---|
| 3133 | break; |
---|
| 3134 | } |
---|
| 3135 | ////////////////// |
---|
| 3136 | case SC_HEAP_LAST: |
---|
| 3137 | { |
---|
| 3138 | assert((r_alloc_heap_fsm.read() == ALLOC_HEAP_LLSC) && |
---|
| 3139 | "MemCache ERROR : bad HEAP allocation"); |
---|
| 3140 | size_t free_pointer = m_heap_directory.next_free_ptr(); |
---|
| 3141 | |
---|
| 3142 | HeapEntry last_entry; |
---|
| 3143 | last_entry.owner.srcid = 0; |
---|
| 3144 | last_entry.owner.inst = false; |
---|
| 3145 | if(m_heap_directory.is_full()){ |
---|
| 3146 | last_entry.next = r_llsc_next_ptr.read(); |
---|
| 3147 | m_heap_directory.unset_full(); |
---|
| 3148 | } else { |
---|
| 3149 | last_entry.next = free_pointer; |
---|
| 3150 | } |
---|
| 3151 | |
---|
| 3152 | m_heap_directory.write_free_ptr(r_llsc_ptr.read()); |
---|
| 3153 | m_heap_directory.write(r_llsc_next_ptr.read(),last_entry); |
---|
| 3154 | |
---|
| 3155 | cmd_llsc_fifo_get = true; |
---|
| 3156 | r_llsc_fsm = LLSC_IDLE; |
---|
| 3157 | break; |
---|
| 3158 | } |
---|
| 3159 | ////////////////// |
---|
| 3160 | case SC_RSP_FALSE: |
---|
| 3161 | { |
---|
| 3162 | if( !r_llsc_to_tgt_rsp_req ) { |
---|
| 3163 | cmd_llsc_fifo_get = true; |
---|
| 3164 | r_llsc_to_tgt_rsp_req = true; |
---|
| 3165 | r_llsc_to_tgt_rsp_data = 1; |
---|
| 3166 | r_llsc_to_tgt_rsp_srcid = m_cmd_llsc_srcid_fifo.read(); |
---|
| 3167 | r_llsc_to_tgt_rsp_trdid = m_cmd_llsc_trdid_fifo.read(); |
---|
| 3168 | r_llsc_to_tgt_rsp_pktid = m_cmd_llsc_pktid_fifo.read(); |
---|
| 3169 | r_llsc_fsm = LLSC_IDLE; |
---|
| 3170 | } |
---|
| 3171 | break; |
---|
| 3172 | } |
---|
| 3173 | ///////////////// |
---|
| 3174 | case SC_RSP_TRUE: |
---|
| 3175 | { |
---|
| 3176 | if( !r_llsc_to_tgt_rsp_req ) { |
---|
| 3177 | cmd_llsc_fifo_get = true; |
---|
| 3178 | r_llsc_to_tgt_rsp_req = true; |
---|
| 3179 | r_llsc_to_tgt_rsp_data = 0; |
---|
| 3180 | r_llsc_to_tgt_rsp_srcid = m_cmd_llsc_srcid_fifo.read(); |
---|
| 3181 | r_llsc_to_tgt_rsp_trdid = m_cmd_llsc_trdid_fifo.read(); |
---|
| 3182 | r_llsc_to_tgt_rsp_pktid = m_cmd_llsc_pktid_fifo.read(); |
---|
| 3183 | r_llsc_fsm = LLSC_IDLE; |
---|
| 3184 | } |
---|
| 3185 | break; |
---|
| 3186 | } |
---|
| 3187 | /////////////////// |
---|
| 3188 | case LLSC_TRT_LOCK: // read or write miss : check the Transaction Table |
---|
| 3189 | { |
---|
| 3190 | if( r_alloc_trt_fsm.read() == ALLOC_TRT_LLSC ) { |
---|
| 3191 | size_t index = 0; |
---|
| 3192 | bool hit_read = m_transaction_tab.hit_read(m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()],index); |
---|
| 3193 | bool hit_write = m_transaction_tab.hit_write(m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()]); |
---|
| 3194 | bool wok = !m_transaction_tab.full(index); |
---|
| 3195 | |
---|
| 3196 | if ( hit_read || !wok || hit_write ) { // missing line already requested or no space in TRT |
---|
| 3197 | r_llsc_fsm = LLSC_IDLE; |
---|
| 3198 | } else { |
---|
| 3199 | r_llsc_trt_index = index; |
---|
| 3200 | r_llsc_fsm = LLSC_TRT_SET; |
---|
| 3201 | } |
---|
| 3202 | } |
---|
| 3203 | break; |
---|
| 3204 | } |
---|
| 3205 | ////////////////// |
---|
| 3206 | case LLSC_TRT_SET: // register the XRAM transaction in Transaction Table |
---|
| 3207 | { |
---|
| 3208 | if( r_alloc_trt_fsm.read() == ALLOC_TRT_LLSC ) { |
---|
| 3209 | size_t word = m_x[(vci_addr_t)(m_cmd_llsc_addr_fifo.read())]; |
---|
| 3210 | bool proc_read = !m_cmd_llsc_sc_fifo.read(); |
---|
| 3211 | if(proc_read){ |
---|
| 3212 | m_transaction_tab.set(r_llsc_trt_index.read(), |
---|
| 3213 | true, |
---|
| 3214 | m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()], |
---|
| 3215 | m_cmd_llsc_srcid_fifo.read(), |
---|
| 3216 | m_cmd_llsc_trdid_fifo.read(), |
---|
| 3217 | m_cmd_llsc_pktid_fifo.read(), |
---|
| 3218 | true, |
---|
| 3219 | 1, |
---|
| 3220 | word, |
---|
| 3221 | std::vector<be_t>(m_words,0), |
---|
| 3222 | std::vector<data_t>(m_words,0)); |
---|
| 3223 | }else{ |
---|
| 3224 | std::vector<be_t> be_vector; |
---|
| 3225 | std::vector<data_t> data_vector; |
---|
| 3226 | be_vector.clear(); |
---|
| 3227 | data_vector.clear(); |
---|
| 3228 | // reset Atomic Table |
---|
| 3229 | m_atomic_tab.reset(m_cmd_llsc_addr_fifo.read()); |
---|
| 3230 | for ( size_t i=0; i<m_words; i++ ) |
---|
| 3231 | { |
---|
| 3232 | if(i == word){ |
---|
| 3233 | be_vector.push_back(0xF); |
---|
| 3234 | data_vector.push_back(m_cmd_llsc_wdata_fifo.read()); |
---|
| 3235 | } else { |
---|
| 3236 | be_vector.push_back(0); |
---|
| 3237 | data_vector.push_back(0); |
---|
| 3238 | } |
---|
| 3239 | } |
---|
| 3240 | |
---|
| 3241 | m_transaction_tab.set(r_llsc_trt_index.read(), |
---|
| 3242 | true, |
---|
| 3243 | m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()], |
---|
| 3244 | m_cmd_llsc_srcid_fifo.read(), |
---|
| 3245 | m_cmd_llsc_trdid_fifo.read(), |
---|
| 3246 | m_cmd_llsc_pktid_fifo.read(), |
---|
| 3247 | false, |
---|
| 3248 | 0, |
---|
| 3249 | 0, |
---|
| 3250 | be_vector, |
---|
| 3251 | data_vector); |
---|
| 3252 | } |
---|
| 3253 | #ifdef TDEBUG |
---|
| 3254 | std::cout << sc_time_stamp() << " " << name() << " LLSC_TRT_SET transaction table : " << std::endl; |
---|
| 3255 | for(size_t i = 0 ; i < m_transaction_tab.size() ; i++) |
---|
| 3256 | m_transaction_tab.print(i); |
---|
| 3257 | #endif |
---|
| 3258 | |
---|
| 3259 | r_llsc_fsm = LLSC_XRAM_REQ; |
---|
| 3260 | } |
---|
| 3261 | break; |
---|
| 3262 | } |
---|
| 3263 | /////////////////// |
---|
| 3264 | case LLSC_XRAM_REQ: // request the IXR_CMD FSM to fetch the missing line |
---|
| 3265 | { |
---|
| 3266 | if ( !r_llsc_to_ixr_cmd_req ) { |
---|
| 3267 | r_llsc_to_ixr_cmd_req = true; |
---|
| 3268 | r_llsc_to_ixr_cmd_write = false; |
---|
| 3269 | r_llsc_to_ixr_cmd_trdid = r_llsc_trt_index.read(); |
---|
| 3270 | r_llsc_to_ixr_cmd_nline = m_nline[(vci_addr_t)m_cmd_llsc_addr_fifo.read()]; |
---|
| 3271 | if( m_cmd_llsc_sc_fifo.read() ) { |
---|
| 3272 | r_llsc_fsm = SC_RSP_TRUE; |
---|
| 3273 | } else { |
---|
| 3274 | cmd_llsc_fifo_get = true; |
---|
| 3275 | r_llsc_fsm = LLSC_IDLE; |
---|
| 3276 | } |
---|
| 3277 | } |
---|
| 3278 | break; |
---|
| 3279 | } |
---|
| 3280 | } // end switch r_llsc_fsm |
---|
| 3281 | |
---|
| 3282 | |
---|
| 3283 | ////////////////////////////////////////////////////////////////////////////// |
---|
| 3284 | // INIT_CMD FSM |
---|
| 3285 | ////////////////////////////////////////////////////////////////////////////// |
---|
| 3286 | // The INIT_CMD fsm controls the VCI CMD initiator port, used to update |
---|
| 3287 | // or invalidate cache lines in L1 caches. |
---|
| 3288 | // It implements a round-robin priority between the two following requests: |
---|
| 3289 | // - r_write_to_init_cmd_req : update request from WRITE FSM |
---|
| 3290 | // - r_xram_rsp_to_init_cmd_req : invalidate request from XRAM_RSP FSM |
---|
| 3291 | // The inval request is a single cell VCI write command containing the |
---|
| 3292 | // index of the line to be invalidated. |
---|
| 3293 | // The update request is a multi-cells VCI write command : The first cell |
---|
| 3294 | // contains the index of the cache line to be updated. The second cell contains |
---|
| 3295 | // the index of the first modified word in the line. The following cells |
---|
| 3296 | // contain the data. |
---|
| 3297 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 3298 | |
---|
| 3299 | switch ( r_init_cmd_fsm.read() ) { |
---|
| 3300 | |
---|
| 3301 | //////////////////////// |
---|
| 3302 | case INIT_CMD_UPDT_IDLE: // Invalidate requests have highest priority |
---|
| 3303 | { |
---|
| 3304 | |
---|
| 3305 | if ( m_xram_rsp_to_init_cmd_inst_fifo.rok() || |
---|
| 3306 | r_xram_rsp_to_init_cmd_multi_req.read() ) { |
---|
| 3307 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
| 3308 | m_cpt_inval++; |
---|
| 3309 | } else if ( r_xram_rsp_to_init_cmd_brdcast_req.read() ) { |
---|
| 3310 | r_init_cmd_fsm = INIT_CMD_XRAM_BRDCAST; |
---|
| 3311 | m_cpt_inval++; |
---|
| 3312 | } else if ( m_write_to_init_cmd_inst_fifo.rok() || |
---|
| 3313 | r_write_to_init_cmd_multi_req.read() ) { |
---|
| 3314 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
| 3315 | m_cpt_update++; |
---|
| 3316 | } else if ( r_write_to_init_cmd_brdcast_req.read() ){ |
---|
| 3317 | r_init_cmd_fsm = INIT_CMD_WRITE_BRDCAST; |
---|
| 3318 | m_cpt_inval++; |
---|
| 3319 | } else if ( m_llsc_to_init_cmd_inst_fifo.rok() || |
---|
| 3320 | r_llsc_to_init_cmd_multi_req.read() ) { |
---|
| 3321 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
| 3322 | m_cpt_update++; |
---|
| 3323 | } else if( r_llsc_to_init_cmd_brdcast_req.read() ){ |
---|
| 3324 | r_init_cmd_fsm = INIT_CMD_SC_BRDCAST; |
---|
| 3325 | m_cpt_inval++; |
---|
| 3326 | } |
---|
| 3327 | break; |
---|
| 3328 | } |
---|
| 3329 | ///////////////////////// |
---|
| 3330 | case INIT_CMD_INVAL_IDLE: // Update requests have highest priority |
---|
| 3331 | { |
---|
| 3332 | if ( m_write_to_init_cmd_inst_fifo.rok() || |
---|
| 3333 | r_write_to_init_cmd_multi_req.read() ) { |
---|
| 3334 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
| 3335 | m_cpt_update++; |
---|
| 3336 | } else if ( r_write_to_init_cmd_brdcast_req.read() ){ |
---|
| 3337 | r_init_cmd_fsm = INIT_CMD_WRITE_BRDCAST; |
---|
| 3338 | m_cpt_inval++; |
---|
| 3339 | } else if ( m_llsc_to_init_cmd_inst_fifo.rok() || |
---|
| 3340 | r_llsc_to_init_cmd_multi_req.read() ) { |
---|
| 3341 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
| 3342 | m_cpt_update++; |
---|
| 3343 | } else if( r_llsc_to_init_cmd_brdcast_req.read() ){ |
---|
| 3344 | r_init_cmd_fsm = INIT_CMD_SC_BRDCAST; |
---|
| 3345 | m_cpt_inval++; |
---|
| 3346 | } else if ( m_xram_rsp_to_init_cmd_inst_fifo.rok() || |
---|
| 3347 | r_xram_rsp_to_init_cmd_multi_req.read() ) { |
---|
| 3348 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
| 3349 | m_cpt_inval++; |
---|
| 3350 | } else if ( r_xram_rsp_to_init_cmd_brdcast_req.read() ) { |
---|
| 3351 | r_init_cmd_fsm = INIT_CMD_XRAM_BRDCAST; |
---|
| 3352 | m_cpt_inval++; |
---|
| 3353 | } |
---|
| 3354 | break; |
---|
| 3355 | } |
---|
| 3356 | ///////////////////////// |
---|
| 3357 | case INIT_CMD_SC_UPDT_IDLE: // Update requests for SCs have highest priority |
---|
| 3358 | { |
---|
| 3359 | if ( m_llsc_to_init_cmd_inst_fifo.rok() || |
---|
| 3360 | r_llsc_to_init_cmd_multi_req.read() ) { |
---|
| 3361 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
| 3362 | m_cpt_update++; |
---|
| 3363 | } else if( r_llsc_to_init_cmd_brdcast_req.read() ){ |
---|
| 3364 | r_init_cmd_fsm = INIT_CMD_SC_BRDCAST; |
---|
| 3365 | m_cpt_inval++; |
---|
| 3366 | } else if ( m_xram_rsp_to_init_cmd_inst_fifo.rok() || |
---|
| 3367 | r_xram_rsp_to_init_cmd_multi_req.read() ) { |
---|
| 3368 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
| 3369 | m_cpt_inval++; |
---|
| 3370 | } else if ( r_xram_rsp_to_init_cmd_brdcast_req.read() ) { |
---|
| 3371 | r_init_cmd_fsm = INIT_CMD_XRAM_BRDCAST; |
---|
| 3372 | m_cpt_inval++; |
---|
| 3373 | } else if ( m_write_to_init_cmd_inst_fifo.rok() || |
---|
| 3374 | r_write_to_init_cmd_multi_req.read() ) { |
---|
| 3375 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
| 3376 | m_cpt_update++; |
---|
| 3377 | } else if ( r_write_to_init_cmd_brdcast_req.read() ){ |
---|
| 3378 | r_init_cmd_fsm = INIT_CMD_WRITE_BRDCAST; |
---|
| 3379 | m_cpt_inval++; |
---|
| 3380 | } |
---|
| 3381 | break; |
---|
| 3382 | } |
---|
| 3383 | //////////////////////// |
---|
| 3384 | case INIT_CMD_INVAL_NLINE: // send the cache line index |
---|
| 3385 | { |
---|
| 3386 | if ( m_xram_rsp_to_init_cmd_inst_fifo.rok() ){ |
---|
| 3387 | if ( p_vci_ini.cmdack ) { |
---|
| 3388 | m_cpt_inval_mult++; |
---|
| 3389 | r_init_cmd_fsm = INIT_CMD_INVAL_NLINE; |
---|
| 3390 | xram_rsp_to_init_cmd_fifo_get = true; |
---|
| 3391 | } |
---|
| 3392 | } else { |
---|
| 3393 | if( r_xram_rsp_to_init_cmd_multi_req.read() ){ |
---|
| 3394 | r_xram_rsp_to_init_cmd_multi_req = false; |
---|
| 3395 | } |
---|
| 3396 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
| 3397 | } |
---|
| 3398 | break; |
---|
| 3399 | } |
---|
| 3400 | //////////////////////// |
---|
| 3401 | case INIT_CMD_XRAM_BRDCAST: // send the cache line index |
---|
| 3402 | { |
---|
| 3403 | if ( p_vci_ini.cmdack ) { |
---|
| 3404 | m_cpt_inval_brdcast++; |
---|
| 3405 | r_init_cmd_fsm = INIT_CMD_INVAL_IDLE; |
---|
| 3406 | r_xram_rsp_to_init_cmd_brdcast_req = false; |
---|
| 3407 | } |
---|
| 3408 | break; |
---|
| 3409 | } |
---|
| 3410 | ///////////////////////// |
---|
| 3411 | case INIT_CMD_WRITE_BRDCAST: |
---|
| 3412 | { |
---|
| 3413 | if( p_vci_ini.cmdack ) { |
---|
| 3414 | m_cpt_inval_brdcast++; |
---|
| 3415 | r_write_to_init_cmd_brdcast_req = false; |
---|
| 3416 | r_init_cmd_fsm = INIT_CMD_UPDT_IDLE; |
---|
| 3417 | } |
---|
| 3418 | break; |
---|
| 3419 | } |
---|
| 3420 | ///////////////////////// |
---|
| 3421 | case INIT_CMD_UPDT_NLINE: // send the cache line index |
---|
| 3422 | { |
---|
| 3423 | if ( m_write_to_init_cmd_inst_fifo.rok() ) { |
---|
| 3424 | if ( p_vci_ini.cmdack ){ |
---|
| 3425 | m_cpt_update_mult++; |
---|
| 3426 | r_init_cmd_fsm = INIT_CMD_UPDT_INDEX; |
---|
| 3427 | } |
---|
| 3428 | } else { |
---|
| 3429 | if ( r_write_to_init_cmd_multi_req.read() ){ |
---|
| 3430 | r_write_to_init_cmd_multi_req = false; |
---|
| 3431 | } |
---|
| 3432 | r_init_cmd_fsm = INIT_CMD_UPDT_IDLE; |
---|
| 3433 | } |
---|
| 3434 | break; |
---|
| 3435 | } |
---|
| 3436 | ///////////////////////// |
---|
| 3437 | case INIT_CMD_UPDT_INDEX: // send the first word index |
---|
| 3438 | { |
---|
| 3439 | r_init_cmd_cpt = 0; |
---|
| 3440 | if ( p_vci_ini.cmdack ) r_init_cmd_fsm = INIT_CMD_UPDT_DATA; |
---|
| 3441 | break; |
---|
| 3442 | } |
---|
| 3443 | //////////////////////// |
---|
| 3444 | case INIT_CMD_UPDT_DATA: // send the data |
---|
| 3445 | { |
---|
| 3446 | if ( p_vci_ini.cmdack ) { |
---|
| 3447 | if ( r_init_cmd_cpt.read() == (r_write_to_init_cmd_count.read()-1) ) { |
---|
| 3448 | r_init_cmd_fsm = INIT_CMD_UPDT_NLINE; |
---|
| 3449 | write_to_init_cmd_fifo_get = true; |
---|
| 3450 | } else { |
---|
| 3451 | r_init_cmd_cpt = r_init_cmd_cpt.read() + 1; |
---|
| 3452 | } |
---|
| 3453 | } |
---|
| 3454 | break; |
---|
| 3455 | } |
---|
| 3456 | ///////////////////////// |
---|
| 3457 | case INIT_CMD_SC_BRDCAST: |
---|
| 3458 | { |
---|
| 3459 | if( p_vci_ini.cmdack ) { |
---|
| 3460 | m_cpt_inval_brdcast++; |
---|
| 3461 | r_llsc_to_init_cmd_brdcast_req = false; |
---|
| 3462 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_IDLE; |
---|
| 3463 | } |
---|
| 3464 | break; |
---|
| 3465 | } |
---|
| 3466 | ///////////////////////// |
---|
| 3467 | case INIT_CMD_SC_UPDT_NLINE: // send the cache line index |
---|
| 3468 | { |
---|
| 3469 | if ( m_llsc_to_init_cmd_inst_fifo.rok() ){ |
---|
| 3470 | if ( p_vci_ini.cmdack ){ |
---|
| 3471 | m_cpt_update_mult++; |
---|
| 3472 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_INDEX; |
---|
| 3473 | } |
---|
| 3474 | } else { |
---|
| 3475 | if( r_llsc_to_init_cmd_multi_req.read() ){ |
---|
| 3476 | r_llsc_to_init_cmd_multi_req = false; |
---|
| 3477 | } |
---|
| 3478 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_IDLE; |
---|
| 3479 | } |
---|
| 3480 | break; |
---|
| 3481 | } |
---|
| 3482 | ///////////////////////// |
---|
| 3483 | case INIT_CMD_SC_UPDT_INDEX: // send the first word index |
---|
| 3484 | { |
---|
| 3485 | if ( p_vci_ini.cmdack ) r_init_cmd_fsm = INIT_CMD_SC_UPDT_DATA; |
---|
| 3486 | break; |
---|
| 3487 | } |
---|
| 3488 | //////////////////////// |
---|
| 3489 | case INIT_CMD_SC_UPDT_DATA: // send the data |
---|
| 3490 | { |
---|
| 3491 | if ( p_vci_ini.cmdack ) { |
---|
| 3492 | llsc_to_init_cmd_fifo_get = true; |
---|
| 3493 | r_init_cmd_fsm = INIT_CMD_SC_UPDT_NLINE; |
---|
| 3494 | } |
---|
| 3495 | break; |
---|
| 3496 | } |
---|
| 3497 | |
---|
| 3498 | } // end switch r_init_cmd_fsm |
---|
| 3499 | |
---|
| 3500 | ///////////////////////////////////////////////////////////////////// |
---|
| 3501 | // TGT_RSP FSM |
---|
| 3502 | ///////////////////////////////////////////////////////////////////// |
---|
| 3503 | // The TGT_RSP fsm sends the responses on the VCI target port |
---|
| 3504 | // with a round robin priority between six requests : |
---|
| 3505 | // - r_read_to_tgt_rsp_req |
---|
| 3506 | // - r_write_to_tgt_rsp_req |
---|
| 3507 | // - r_llsc_to_tgt_rsp_req |
---|
| 3508 | // - r_cleanup_to_tgt_rsp_req |
---|
| 3509 | // - r_init_rsp_to_tgt_rsp_req |
---|
| 3510 | // - r_xram_rsp_to_tgt_rsp_req |
---|
| 3511 | // The ordering is : read > write > llsc > cleanup > xram > init |
---|
| 3512 | ///////////////////////////////////////////////////////////////////// |
---|
| 3513 | |
---|
| 3514 | switch ( r_tgt_rsp_fsm.read() ) { |
---|
| 3515 | |
---|
| 3516 | /////////////////////// |
---|
| 3517 | case TGT_RSP_READ_IDLE: // write requests have the highest priority |
---|
| 3518 | { |
---|
| 3519 | if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 3520 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 3521 | else if ( r_xram_rsp_to_tgt_rsp_req ) { |
---|
| 3522 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
| 3523 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
| 3524 | } |
---|
| 3525 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 3526 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 3527 | else if ( r_read_to_tgt_rsp_req ) { |
---|
| 3528 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
| 3529 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
| 3530 | } |
---|
| 3531 | break; |
---|
| 3532 | } |
---|
| 3533 | //////////////////////// |
---|
| 3534 | case TGT_RSP_WRITE_IDLE: // llsc requests have the highest priority |
---|
| 3535 | { |
---|
| 3536 | if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 3537 | else if ( r_xram_rsp_to_tgt_rsp_req ) { |
---|
| 3538 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
| 3539 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
| 3540 | } |
---|
| 3541 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 3542 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 3543 | else if ( r_read_to_tgt_rsp_req ) { |
---|
| 3544 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
| 3545 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
| 3546 | } |
---|
| 3547 | |
---|
| 3548 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 3549 | break; |
---|
| 3550 | } |
---|
| 3551 | /////////////////////// |
---|
| 3552 | case TGT_RSP_LLSC_IDLE: // cleanup requests have the highest priority |
---|
| 3553 | { |
---|
| 3554 | if ( r_xram_rsp_to_tgt_rsp_req ) { |
---|
| 3555 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
| 3556 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
| 3557 | } |
---|
| 3558 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 3559 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 3560 | else if ( r_read_to_tgt_rsp_req ) { |
---|
| 3561 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
| 3562 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
| 3563 | } |
---|
| 3564 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 3565 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 3566 | break; |
---|
| 3567 | } |
---|
| 3568 | case TGT_RSP_XRAM_IDLE: // init requests have the highest priority |
---|
| 3569 | { |
---|
| 3570 | |
---|
| 3571 | if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 3572 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 3573 | else if ( r_read_to_tgt_rsp_req ) { |
---|
| 3574 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
| 3575 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
| 3576 | } |
---|
| 3577 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 3578 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 3579 | else if ( r_xram_rsp_to_tgt_rsp_req ) { |
---|
| 3580 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
| 3581 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
| 3582 | } |
---|
| 3583 | break; |
---|
| 3584 | } |
---|
| 3585 | /////////////////////// |
---|
| 3586 | case TGT_RSP_INIT_IDLE: // cleanup requests have the highest priority |
---|
| 3587 | { |
---|
| 3588 | if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 3589 | else if ( r_read_to_tgt_rsp_req ) { |
---|
| 3590 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
| 3591 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
| 3592 | } |
---|
| 3593 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 3594 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 3595 | else if ( r_xram_rsp_to_tgt_rsp_req ) { |
---|
| 3596 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
| 3597 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
| 3598 | } |
---|
| 3599 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 3600 | break; |
---|
| 3601 | } |
---|
| 3602 | /////////////////////// |
---|
| 3603 | case TGT_RSP_CLEANUP_IDLE: // read requests have the highest priority |
---|
| 3604 | { |
---|
| 3605 | if ( r_read_to_tgt_rsp_req ) { |
---|
| 3606 | r_tgt_rsp_fsm = TGT_RSP_READ; |
---|
| 3607 | r_tgt_rsp_cpt = r_read_to_tgt_rsp_word.read(); |
---|
| 3608 | } |
---|
| 3609 | else if ( r_write_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_WRITE; |
---|
| 3610 | else if ( r_llsc_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_LLSC; |
---|
| 3611 | else if ( r_xram_rsp_to_tgt_rsp_req ) { |
---|
| 3612 | r_tgt_rsp_fsm = TGT_RSP_XRAM; |
---|
| 3613 | r_tgt_rsp_cpt = r_xram_rsp_to_tgt_rsp_word.read(); |
---|
| 3614 | } |
---|
| 3615 | else if ( r_init_rsp_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_INIT; |
---|
| 3616 | else if ( r_cleanup_to_tgt_rsp_req ) r_tgt_rsp_fsm = TGT_RSP_CLEANUP; |
---|
| 3617 | break; |
---|
| 3618 | } |
---|
| 3619 | /////////////////////// |
---|
| 3620 | case TGT_RSP_READ: // send the response |
---|
| 3621 | { |
---|
| 3622 | if ( p_vci_tgt.rspack ) { |
---|
| 3623 | if ( r_tgt_rsp_cpt.read() == (r_read_to_tgt_rsp_word.read()+r_read_to_tgt_rsp_length-1) ) { |
---|
| 3624 | r_tgt_rsp_fsm = TGT_RSP_READ_IDLE; |
---|
| 3625 | r_read_to_tgt_rsp_req = false; |
---|
| 3626 | } else { |
---|
| 3627 | r_tgt_rsp_cpt = r_tgt_rsp_cpt.read() + 1; |
---|
| 3628 | } |
---|
| 3629 | } |
---|
| 3630 | break; |
---|
| 3631 | } |
---|
| 3632 | /////////////////// |
---|
| 3633 | case TGT_RSP_WRITE: // send the write acknowledge |
---|
| 3634 | { |
---|
| 3635 | if ( p_vci_tgt.rspack ) { |
---|
| 3636 | r_tgt_rsp_fsm = TGT_RSP_WRITE_IDLE; |
---|
| 3637 | r_write_to_tgt_rsp_req = false; |
---|
| 3638 | } |
---|
| 3639 | break; |
---|
| 3640 | } |
---|
| 3641 | /////////////////// |
---|
| 3642 | case TGT_RSP_CLEANUP: // send the write acknowledge |
---|
| 3643 | { |
---|
| 3644 | if ( p_vci_tgt.rspack ) { |
---|
| 3645 | r_tgt_rsp_fsm = TGT_RSP_CLEANUP_IDLE; |
---|
| 3646 | r_cleanup_to_tgt_rsp_req = false; |
---|
| 3647 | } |
---|
| 3648 | break; |
---|
| 3649 | } |
---|
| 3650 | ////////////////// |
---|
| 3651 | case TGT_RSP_LLSC: // send one atomic word response |
---|
| 3652 | { |
---|
| 3653 | if ( p_vci_tgt.rspack ) { |
---|
| 3654 | r_tgt_rsp_fsm = TGT_RSP_LLSC_IDLE; |
---|
| 3655 | r_llsc_to_tgt_rsp_req = false; |
---|
| 3656 | } |
---|
| 3657 | break; |
---|
| 3658 | } |
---|
| 3659 | |
---|
| 3660 | /////////////////////// |
---|
| 3661 | case TGT_RSP_XRAM: // send the response |
---|
| 3662 | { |
---|
| 3663 | if ( p_vci_tgt.rspack ) { |
---|
| 3664 | if ( r_tgt_rsp_cpt.read() == (r_xram_rsp_to_tgt_rsp_word.read()+r_xram_rsp_to_tgt_rsp_length.read()-1)) { |
---|
| 3665 | r_tgt_rsp_fsm = TGT_RSP_XRAM_IDLE; |
---|
| 3666 | r_xram_rsp_to_tgt_rsp_req = false; |
---|
| 3667 | } else { |
---|
| 3668 | r_tgt_rsp_cpt = r_tgt_rsp_cpt.read() + 1; |
---|
| 3669 | } |
---|
| 3670 | } |
---|
| 3671 | break; |
---|
| 3672 | } |
---|
| 3673 | /////////////////// |
---|
| 3674 | case TGT_RSP_INIT: // send the pending write acknowledge |
---|
| 3675 | { |
---|
| 3676 | if ( p_vci_tgt.rspack ) { |
---|
| 3677 | r_tgt_rsp_fsm = TGT_RSP_INIT_IDLE; |
---|
| 3678 | r_init_rsp_to_tgt_rsp_req = false; |
---|
| 3679 | } |
---|
| 3680 | break; |
---|
| 3681 | } |
---|
| 3682 | } // end switch tgt_rsp_fsm |
---|
| 3683 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3684 | // NEW ALLOC_UPT FSM |
---|
| 3685 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3686 | // The ALLOC_UPT FSM allocates the access to the Update/Inval Table (UPT). |
---|
| 3687 | // with a round robin priority between three FSMs : INIT_RSP > WRITE > XRAM_RSP > CLEANUP |
---|
| 3688 | // - The WRITE FSM initiates update transactions and sets new entry in UPT. |
---|
| 3689 | // - The XRAM_RSP FSM initiates inval transactions and sets new entry in UPT. |
---|
| 3690 | // - The INIT_RSP FSM complete those trasactions and erase the UPT entry. |
---|
| 3691 | // - The CLEANUP FSM decrement an entry in UPT. |
---|
| 3692 | // The resource is always allocated. |
---|
| 3693 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 3694 | |
---|
| 3695 | switch ( r_alloc_upt_fsm.read() ) { |
---|
| 3696 | |
---|
| 3697 | //////////////////////// |
---|
| 3698 | case ALLOC_UPT_INIT_RSP: |
---|
| 3699 | if ( (r_init_rsp_fsm.read() != INIT_RSP_UPT_LOCK) && |
---|
| 3700 | (r_init_rsp_fsm.read() != INIT_RSP_UPT_CLEAR) ) |
---|
| 3701 | { |
---|
| 3702 | if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
| 3703 | (r_write_fsm.read() == WRITE_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 3704 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
| 3705 | else if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
| 3706 | else if ((r_llsc_fsm.read() == SC_UPT_LOCK) || |
---|
| 3707 | (r_llsc_fsm.read() == SC_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_LLSC; |
---|
| 3708 | } |
---|
| 3709 | break; |
---|
| 3710 | |
---|
| 3711 | ///////////////////// |
---|
| 3712 | case ALLOC_UPT_WRITE: |
---|
| 3713 | if ( (r_write_fsm.read() != WRITE_UPT_LOCK) && |
---|
| 3714 | (r_write_fsm.read() != WRITE_INVAL_LOCK)) |
---|
| 3715 | { |
---|
| 3716 | if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
| 3717 | else if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
| 3718 | else if ((r_llsc_fsm.read() == SC_UPT_LOCK) || |
---|
| 3719 | (r_llsc_fsm.read() == SC_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_LLSC; |
---|
| 3720 | else if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
| 3721 | } |
---|
| 3722 | break; |
---|
| 3723 | |
---|
| 3724 | //////////////////////// |
---|
| 3725 | case ALLOC_UPT_XRAM_RSP: |
---|
| 3726 | if (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK) |
---|
| 3727 | { |
---|
| 3728 | if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
| 3729 | else if ((r_llsc_fsm.read() == SC_UPT_LOCK) || |
---|
| 3730 | (r_llsc_fsm.read() == SC_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_LLSC; |
---|
| 3731 | else if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
| 3732 | else if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
| 3733 | (r_write_fsm.read() == WRITE_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 3734 | } |
---|
| 3735 | break; |
---|
| 3736 | |
---|
| 3737 | ////////////////////////// |
---|
| 3738 | case ALLOC_UPT_CLEANUP: |
---|
| 3739 | if(r_cleanup_fsm.read() != CLEANUP_UPT_LOCK ) |
---|
| 3740 | { |
---|
| 3741 | if ((r_llsc_fsm.read() == SC_UPT_LOCK) || |
---|
| 3742 | (r_llsc_fsm.read() == SC_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_LLSC; |
---|
| 3743 | else if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
| 3744 | else if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
| 3745 | (r_write_fsm.read() == WRITE_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 3746 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
| 3747 | } |
---|
| 3748 | break; |
---|
| 3749 | |
---|
| 3750 | ////////////////////////// |
---|
| 3751 | case ALLOC_UPT_LLSC: |
---|
| 3752 | if( (r_llsc_fsm.read() != SC_UPT_LOCK) && |
---|
| 3753 | (r_llsc_fsm.read() != SC_INVAL_LOCK)) |
---|
| 3754 | { |
---|
| 3755 | if (r_init_rsp_fsm.read() == INIT_RSP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_INIT_RSP; |
---|
| 3756 | else if ((r_write_fsm.read() == WRITE_UPT_LOCK) || |
---|
| 3757 | (r_write_fsm.read() == WRITE_INVAL_LOCK)) r_alloc_upt_fsm = ALLOC_UPT_WRITE; |
---|
| 3758 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_INVAL_LOCK) r_alloc_upt_fsm = ALLOC_UPT_XRAM_RSP; |
---|
| 3759 | else if (r_cleanup_fsm.read() == CLEANUP_UPT_LOCK) r_alloc_upt_fsm = ALLOC_UPT_CLEANUP; |
---|
| 3760 | } |
---|
| 3761 | break; |
---|
| 3762 | |
---|
| 3763 | } // end switch r_alloc_upt_fsm |
---|
| 3764 | |
---|
| 3765 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3766 | // ALLOC_DIR FSM |
---|
| 3767 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3768 | // The ALLOC_DIR FSM allocates the access to the directory and |
---|
| 3769 | // the data cache with a round robin priority between 5 user FSMs : |
---|
| 3770 | // The cyclic ordering is READ > WRITE > LLSC > CLEANUP > XRAM_RSP |
---|
| 3771 | // The ressource is always allocated. |
---|
| 3772 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 3773 | |
---|
| 3774 | switch ( r_alloc_dir_fsm.read() ) { |
---|
| 3775 | |
---|
| 3776 | //////////////////// |
---|
| 3777 | case ALLOC_DIR_READ: |
---|
| 3778 | if ( ( (r_read_fsm.read() != READ_DIR_LOCK) && |
---|
| 3779 | (r_read_fsm.read() != READ_TRT_LOCK) && |
---|
| 3780 | (r_read_fsm.read() != READ_HEAP_LOCK)) |
---|
| 3781 | || |
---|
| 3782 | ( (r_read_fsm.read() == READ_HEAP_LOCK) && |
---|
| 3783 | (r_alloc_heap_fsm.read() == ALLOC_HEAP_READ) ) |
---|
| 3784 | || |
---|
| 3785 | ( (r_read_fsm.read() == READ_TRT_LOCK) && |
---|
| 3786 | (r_alloc_trt_fsm.read() == ALLOC_TRT_READ) ) ) |
---|
| 3787 | { |
---|
| 3788 | if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
| 3789 | else if ((r_llsc_fsm.read() == LL_DIR_LOCK) || |
---|
| 3790 | (r_llsc_fsm.read() == SC_DIR_LOCK)) r_alloc_dir_fsm = ALLOC_DIR_LLSC; |
---|
| 3791 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
| 3792 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
| 3793 | } |
---|
| 3794 | break; |
---|
| 3795 | |
---|
| 3796 | ///////////////////// |
---|
| 3797 | case ALLOC_DIR_WRITE: |
---|
| 3798 | if ( ( (r_write_fsm.read() != WRITE_DIR_LOCK) && |
---|
| 3799 | (r_write_fsm.read() != WRITE_TRT_LOCK) && |
---|
| 3800 | (r_write_fsm.read() != WRITE_DIR_HIT_READ) && |
---|
| 3801 | (r_write_fsm.read() != WRITE_DIR_HIT) && |
---|
| 3802 | (r_write_fsm.read() != WRITE_TRT_WRITE_LOCK) && |
---|
| 3803 | (r_write_fsm.read() != WRITE_INVAL_LOCK) && |
---|
| 3804 | (r_write_fsm.read() != WRITE_UPT_LOCK) && |
---|
| 3805 | (r_write_fsm.read() != WRITE_HEAP_LOCK)) |
---|
| 3806 | || |
---|
| 3807 | ( (r_write_fsm.read() == WRITE_HEAP_LOCK) && |
---|
| 3808 | (r_alloc_heap_fsm.read() == ALLOC_HEAP_WRITE) ) |
---|
| 3809 | || |
---|
| 3810 | ( (r_write_fsm.read() == WRITE_TRT_LOCK) && |
---|
| 3811 | (r_alloc_trt_fsm.read() == ALLOC_TRT_WRITE) ) ) |
---|
| 3812 | { |
---|
| 3813 | if ((r_llsc_fsm.read() == LL_DIR_LOCK) || |
---|
| 3814 | (r_llsc_fsm.read() == SC_DIR_LOCK)) r_alloc_dir_fsm = ALLOC_DIR_LLSC; |
---|
| 3815 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
| 3816 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
| 3817 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 3818 | } |
---|
| 3819 | break; |
---|
| 3820 | |
---|
| 3821 | //////////////////// |
---|
| 3822 | case ALLOC_DIR_LLSC: |
---|
| 3823 | if ( ( (r_llsc_fsm.read() != LL_DIR_LOCK) && |
---|
| 3824 | (r_llsc_fsm.read() != LL_DIR_HIT ) && |
---|
| 3825 | (r_llsc_fsm.read() != SC_DIR_LOCK) && |
---|
| 3826 | (r_llsc_fsm.read() != SC_DIR_HIT ) && |
---|
| 3827 | (r_llsc_fsm.read() != LLSC_TRT_LOCK ) && |
---|
| 3828 | (r_llsc_fsm.read() != SC_TRT_LOCK) && |
---|
| 3829 | (r_llsc_fsm.read() != SC_INVAL_LOCK) && |
---|
| 3830 | (r_llsc_fsm.read() != SC_UPT_LOCK) && |
---|
| 3831 | (r_llsc_fsm.read() != SC_HEAP_LOCK)) |
---|
| 3832 | || |
---|
| 3833 | ( (r_llsc_fsm.read() == SC_HEAP_LOCK) && |
---|
| 3834 | (r_alloc_heap_fsm.read() == ALLOC_HEAP_LLSC) ) |
---|
| 3835 | || |
---|
| 3836 | ( (r_llsc_fsm.read() == LLSC_TRT_LOCK ) && |
---|
| 3837 | (r_alloc_trt_fsm.read() == ALLOC_TRT_LLSC) ) ) |
---|
| 3838 | { |
---|
| 3839 | if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
| 3840 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
| 3841 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 3842 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
| 3843 | } |
---|
| 3844 | break; |
---|
| 3845 | |
---|
| 3846 | /////////////////////// |
---|
| 3847 | case ALLOC_DIR_CLEANUP: |
---|
| 3848 | if ( (r_cleanup_fsm.read() != CLEANUP_DIR_LOCK) && |
---|
| 3849 | (r_cleanup_fsm.read() != CLEANUP_HEAP_LOCK) ) |
---|
| 3850 | { |
---|
| 3851 | if (r_xram_rsp_fsm.read() == XRAM_RSP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_XRAM_RSP; |
---|
| 3852 | else if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 3853 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
| 3854 | else if ((r_llsc_fsm.read() == LL_DIR_LOCK) || |
---|
| 3855 | (r_llsc_fsm.read() == SC_DIR_LOCK)) r_alloc_dir_fsm = ALLOC_DIR_LLSC; |
---|
| 3856 | } |
---|
| 3857 | break; |
---|
| 3858 | //////////////////////// |
---|
| 3859 | case ALLOC_DIR_XRAM_RSP: |
---|
| 3860 | if ( (r_xram_rsp_fsm.read() != XRAM_RSP_DIR_LOCK) && |
---|
| 3861 | (r_xram_rsp_fsm.read() != XRAM_RSP_TRT_COPY) && |
---|
| 3862 | (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK)) |
---|
| 3863 | { |
---|
| 3864 | if (r_read_fsm.read() == READ_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_READ; |
---|
| 3865 | else if (r_write_fsm.read() == WRITE_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_WRITE; |
---|
| 3866 | else if ( (r_llsc_fsm.read() == LL_DIR_LOCK) || |
---|
| 3867 | (r_llsc_fsm.read() == SC_DIR_LOCK)) r_alloc_dir_fsm = ALLOC_DIR_LLSC; |
---|
| 3868 | else if (r_cleanup_fsm.read() == CLEANUP_DIR_LOCK) r_alloc_dir_fsm = ALLOC_DIR_CLEANUP; |
---|
| 3869 | } |
---|
| 3870 | break; |
---|
| 3871 | |
---|
| 3872 | } // end switch alloc_dir_fsm |
---|
| 3873 | |
---|
| 3874 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3875 | // ALLOC_TRT FSM |
---|
| 3876 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3877 | // The ALLOC_TRT fsm allocates the access to the Transaction Table (write buffer) |
---|
| 3878 | // with a round robin priority between 4 user FSMs : |
---|
| 3879 | // The cyclic priority is READ > WRITE > LLSC > XRAM_RSP |
---|
| 3880 | // The ressource is always allocated. |
---|
| 3881 | /////////////////////////////////////////////////////////////////////////////////// |
---|
| 3882 | |
---|
| 3883 | switch (r_alloc_trt_fsm) { |
---|
| 3884 | |
---|
| 3885 | //////////////////// |
---|
| 3886 | case ALLOC_TRT_READ: |
---|
| 3887 | if ( r_read_fsm.read() != READ_TRT_LOCK ) |
---|
| 3888 | { |
---|
| 3889 | if ((r_write_fsm.read() == WRITE_TRT_LOCK) || |
---|
| 3890 | (r_write_fsm.read() == WRITE_TRT_WRITE_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
| 3891 | else if ((r_llsc_fsm.read() == LLSC_TRT_LOCK) || |
---|
| 3892 | (r_llsc_fsm.read() == SC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_LLSC; |
---|
| 3893 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
| 3894 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
| 3895 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ) ) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
| 3896 | } |
---|
| 3897 | break; |
---|
| 3898 | ///////////////////// |
---|
| 3899 | case ALLOC_TRT_WRITE: |
---|
| 3900 | if ( (r_write_fsm.read() != WRITE_TRT_LOCK) && |
---|
| 3901 | (r_write_fsm.read() != WRITE_TRT_WRITE_LOCK) && |
---|
| 3902 | (r_write_fsm.read() != WRITE_INVAL_LOCK)) |
---|
| 3903 | { |
---|
| 3904 | if ((r_llsc_fsm.read() == LLSC_TRT_LOCK) || |
---|
| 3905 | (r_llsc_fsm.read() == SC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_LLSC; |
---|
| 3906 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
| 3907 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
| 3908 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
| 3909 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 3910 | } |
---|
| 3911 | break; |
---|
| 3912 | //////////////////// |
---|
| 3913 | case ALLOC_TRT_LLSC: |
---|
| 3914 | if ( (r_llsc_fsm.read() != LLSC_TRT_LOCK) && |
---|
| 3915 | (r_llsc_fsm.read() != SC_TRT_LOCK) && |
---|
| 3916 | (r_llsc_fsm.read() != SC_INVAL_LOCK)) |
---|
| 3917 | { |
---|
| 3918 | if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
| 3919 | else if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
| 3920 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
| 3921 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 3922 | else if ((r_write_fsm.read() == WRITE_TRT_LOCK) || |
---|
| 3923 | (r_write_fsm.read() == WRITE_TRT_WRITE_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
| 3924 | } |
---|
| 3925 | break; |
---|
| 3926 | //////////////////////// |
---|
| 3927 | case ALLOC_TRT_XRAM_RSP: |
---|
| 3928 | if ( (r_xram_rsp_fsm.read() != XRAM_RSP_TRT_COPY) && |
---|
| 3929 | (r_xram_rsp_fsm.read() != XRAM_RSP_DIR_UPDT) && |
---|
| 3930 | (r_xram_rsp_fsm.read() != XRAM_RSP_INVAL_LOCK)) { |
---|
| 3931 | if ( (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_ERASE) || |
---|
| 3932 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) r_alloc_trt_fsm = ALLOC_TRT_IXR_RSP; |
---|
| 3933 | else if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 3934 | else if ((r_write_fsm.read() == WRITE_TRT_LOCK) || |
---|
| 3935 | (r_write_fsm.read() == WRITE_TRT_WRITE_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
| 3936 | else if ((r_llsc_fsm.read() == LLSC_TRT_LOCK) || |
---|
| 3937 | (r_llsc_fsm.read() == SC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_LLSC; |
---|
| 3938 | } |
---|
| 3939 | break; |
---|
| 3940 | //////////////////////// |
---|
| 3941 | case ALLOC_TRT_IXR_RSP: |
---|
| 3942 | if ( (r_ixr_rsp_fsm.read() != IXR_RSP_TRT_ERASE) && |
---|
| 3943 | (r_ixr_rsp_fsm.read() != IXR_RSP_TRT_READ) ) { |
---|
| 3944 | if (r_read_fsm.read() == READ_TRT_LOCK) r_alloc_trt_fsm = ALLOC_TRT_READ; |
---|
| 3945 | else if ((r_write_fsm.read() == WRITE_TRT_LOCK) || |
---|
| 3946 | (r_write_fsm.read() == WRITE_TRT_WRITE_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_WRITE; |
---|
| 3947 | else if ((r_llsc_fsm.read() == LLSC_TRT_LOCK) || |
---|
| 3948 | (r_llsc_fsm.read() == SC_TRT_LOCK)) r_alloc_trt_fsm = ALLOC_TRT_LLSC; |
---|
| 3949 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_TRT_COPY) r_alloc_trt_fsm = ALLOC_TRT_XRAM_RSP; |
---|
| 3950 | } |
---|
| 3951 | break; |
---|
| 3952 | |
---|
| 3953 | } // end switch alloc_trt_fsm |
---|
| 3954 | |
---|
| 3955 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3956 | // ALLOC_HEAP FSM |
---|
| 3957 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 3958 | // The ALLOC_HEAP FSM allocates the access to the heap |
---|
| 3959 | // with a round robin priority between 5 user FSMs : |
---|
| 3960 | // The cyclic ordering is READ > WRITE > LLSC > CLEANUP > XRAM_RSP |
---|
| 3961 | // The ressource is always allocated. |
---|
| 3962 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 3963 | |
---|
| 3964 | switch ( r_alloc_heap_fsm.read() ) { |
---|
| 3965 | |
---|
| 3966 | //////////////////// |
---|
| 3967 | case ALLOC_HEAP_READ: |
---|
| 3968 | if ( (r_read_fsm.read() != READ_HEAP_LOCK) && |
---|
| 3969 | (r_read_fsm.read() != READ_HEAP_ERASE) ) |
---|
| 3970 | { |
---|
| 3971 | if ((r_write_fsm.read() == WRITE_HEAP_LOCK) || |
---|
| 3972 | (r_write_fsm.read() == WRITE_HEAP_ERASE)) r_alloc_heap_fsm = ALLOC_HEAP_WRITE; |
---|
| 3973 | else if ((r_llsc_fsm.read() == SC_HEAP_LOCK) || |
---|
| 3974 | (r_llsc_fsm.read() == SC_HEAP_ERASE)) r_alloc_heap_fsm = ALLOC_HEAP_LLSC; |
---|
| 3975 | else if (r_cleanup_fsm.read() == CLEANUP_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_CLEANUP; |
---|
| 3976 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_HEAP_ERASE) r_alloc_heap_fsm = ALLOC_HEAP_XRAM_RSP; |
---|
| 3977 | } |
---|
| 3978 | break; |
---|
| 3979 | |
---|
| 3980 | ///////////////////// |
---|
| 3981 | case ALLOC_HEAP_WRITE: |
---|
| 3982 | if ( (r_write_fsm.read() != WRITE_HEAP_LOCK) && |
---|
| 3983 | (r_write_fsm.read() != WRITE_UPT_REQ) && |
---|
| 3984 | (r_write_fsm.read() != WRITE_UPDATE) && |
---|
| 3985 | (r_write_fsm.read() != WRITE_HEAP_ERASE)) |
---|
| 3986 | { |
---|
| 3987 | if ((r_llsc_fsm.read() == SC_HEAP_LOCK) || |
---|
| 3988 | (r_llsc_fsm.read() == SC_HEAP_ERASE)) r_alloc_heap_fsm = ALLOC_HEAP_LLSC; |
---|
| 3989 | else if (r_cleanup_fsm.read() == CLEANUP_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_CLEANUP; |
---|
| 3990 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_HEAP_ERASE) r_alloc_heap_fsm = ALLOC_HEAP_XRAM_RSP; |
---|
| 3991 | else if (r_read_fsm.read() == READ_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_READ; |
---|
| 3992 | } |
---|
| 3993 | break; |
---|
| 3994 | |
---|
| 3995 | //////////////////// |
---|
| 3996 | case ALLOC_HEAP_LLSC: |
---|
| 3997 | if ( (r_llsc_fsm.read() != SC_HEAP_LOCK) && |
---|
| 3998 | (r_llsc_fsm.read() != SC_UPT_REQ ) && |
---|
| 3999 | (r_llsc_fsm.read() != SC_UPDATE) && |
---|
| 4000 | (r_llsc_fsm.read() != SC_HEAP_ERASE ) ) |
---|
| 4001 | { |
---|
| 4002 | if (r_cleanup_fsm.read() == CLEANUP_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_CLEANUP; |
---|
| 4003 | else if (r_xram_rsp_fsm.read() == XRAM_RSP_HEAP_ERASE) r_alloc_heap_fsm = ALLOC_HEAP_XRAM_RSP; |
---|
| 4004 | else if (r_read_fsm.read() == READ_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_READ; |
---|
| 4005 | else if ((r_write_fsm.read() == WRITE_HEAP_LOCK) || |
---|
| 4006 | (r_write_fsm.read() == WRITE_HEAP_ERASE)) r_alloc_heap_fsm = ALLOC_HEAP_WRITE; |
---|
| 4007 | } |
---|
| 4008 | break; |
---|
| 4009 | |
---|
| 4010 | /////////////////////// |
---|
| 4011 | case ALLOC_HEAP_CLEANUP: |
---|
| 4012 | if ( (r_cleanup_fsm.read() != CLEANUP_HEAP_LOCK) && |
---|
| 4013 | (r_cleanup_fsm.read() != CLEANUP_HEAP_SEARCH)&& |
---|
| 4014 | (r_cleanup_fsm.read() != CLEANUP_HEAP_CLEAN) ) |
---|
| 4015 | { |
---|
| 4016 | if (r_xram_rsp_fsm.read() == XRAM_RSP_HEAP_ERASE) r_alloc_heap_fsm = ALLOC_HEAP_XRAM_RSP; |
---|
| 4017 | else if (r_read_fsm.read() == READ_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_READ; |
---|
| 4018 | else if ((r_write_fsm.read() == WRITE_HEAP_LOCK) || |
---|
| 4019 | (r_write_fsm.read() == WRITE_HEAP_ERASE)) r_alloc_heap_fsm = ALLOC_HEAP_WRITE; |
---|
| 4020 | else if ((r_llsc_fsm.read() == SC_HEAP_LOCK) || |
---|
| 4021 | (r_llsc_fsm.read() == SC_HEAP_ERASE)) r_alloc_heap_fsm = ALLOC_HEAP_LLSC; |
---|
| 4022 | } |
---|
| 4023 | break; |
---|
| 4024 | //////////////////////// |
---|
| 4025 | case ALLOC_HEAP_XRAM_RSP: |
---|
| 4026 | if ( r_xram_rsp_fsm.read() != XRAM_RSP_HEAP_ERASE ) |
---|
| 4027 | { |
---|
| 4028 | if (r_read_fsm.read() == READ_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_READ; |
---|
| 4029 | else if ((r_write_fsm.read() == WRITE_HEAP_LOCK) || |
---|
| 4030 | (r_write_fsm.read() == WRITE_HEAP_ERASE)) r_alloc_heap_fsm = ALLOC_HEAP_WRITE; |
---|
| 4031 | else if ( (r_llsc_fsm.read() == SC_HEAP_LOCK) || |
---|
| 4032 | (r_llsc_fsm.read() == SC_HEAP_ERASE)) r_alloc_heap_fsm = ALLOC_HEAP_LLSC; |
---|
| 4033 | else if (r_cleanup_fsm.read() == CLEANUP_HEAP_LOCK) r_alloc_heap_fsm = ALLOC_HEAP_CLEANUP; |
---|
| 4034 | } |
---|
| 4035 | break; |
---|
| 4036 | |
---|
| 4037 | } // end switch alloc_heap_fsm |
---|
| 4038 | |
---|
| 4039 | |
---|
| 4040 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4041 | // TGT_CMD to READ FIFO |
---|
| 4042 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4043 | |
---|
| 4044 | if ( cmd_read_fifo_put ) { |
---|
| 4045 | if ( cmd_read_fifo_get ) { |
---|
| 4046 | m_cmd_read_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
| 4047 | m_cmd_read_length_fifo.put_and_get(p_vci_tgt.plen.read()>>2); |
---|
| 4048 | m_cmd_read_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
| 4049 | m_cmd_read_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
| 4050 | m_cmd_read_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
| 4051 | } else { |
---|
| 4052 | m_cmd_read_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
| 4053 | m_cmd_read_length_fifo.simple_put(p_vci_tgt.plen.read()>>2); |
---|
| 4054 | m_cmd_read_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
| 4055 | m_cmd_read_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
| 4056 | m_cmd_read_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
| 4057 | } |
---|
| 4058 | } else { |
---|
| 4059 | if ( cmd_read_fifo_get ) { |
---|
| 4060 | m_cmd_read_addr_fifo.simple_get(); |
---|
| 4061 | m_cmd_read_length_fifo.simple_get(); |
---|
| 4062 | m_cmd_read_srcid_fifo.simple_get(); |
---|
| 4063 | m_cmd_read_trdid_fifo.simple_get(); |
---|
| 4064 | m_cmd_read_pktid_fifo.simple_get(); |
---|
| 4065 | } |
---|
| 4066 | } |
---|
| 4067 | ///////////////////////////////////////////////////////////////////// |
---|
| 4068 | // TGT_CMD to WRITE FIFO |
---|
| 4069 | ///////////////////////////////////////////////////////////////////// |
---|
| 4070 | |
---|
| 4071 | if ( cmd_write_fifo_put ) { |
---|
| 4072 | if ( cmd_write_fifo_get ) { |
---|
| 4073 | m_cmd_write_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
| 4074 | m_cmd_write_eop_fifo.put_and_get(p_vci_tgt.eop.read()); |
---|
| 4075 | m_cmd_write_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
| 4076 | m_cmd_write_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
| 4077 | m_cmd_write_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
| 4078 | m_cmd_write_data_fifo.put_and_get(p_vci_tgt.wdata.read()); |
---|
| 4079 | m_cmd_write_be_fifo.put_and_get(p_vci_tgt.be.read()); |
---|
| 4080 | } else { |
---|
| 4081 | m_cmd_write_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
| 4082 | m_cmd_write_eop_fifo.simple_put(p_vci_tgt.eop.read()); |
---|
| 4083 | m_cmd_write_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
| 4084 | m_cmd_write_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
| 4085 | m_cmd_write_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
| 4086 | m_cmd_write_data_fifo.simple_put(p_vci_tgt.wdata.read()); |
---|
| 4087 | m_cmd_write_be_fifo.simple_put(p_vci_tgt.be.read()); |
---|
| 4088 | } |
---|
| 4089 | } else { |
---|
| 4090 | if ( cmd_write_fifo_get ) { |
---|
| 4091 | m_cmd_write_addr_fifo.simple_get(); |
---|
| 4092 | m_cmd_write_eop_fifo.simple_get(); |
---|
| 4093 | m_cmd_write_srcid_fifo.simple_get(); |
---|
| 4094 | m_cmd_write_trdid_fifo.simple_get(); |
---|
| 4095 | m_cmd_write_pktid_fifo.simple_get(); |
---|
| 4096 | m_cmd_write_data_fifo.simple_get(); |
---|
| 4097 | m_cmd_write_be_fifo.simple_get(); |
---|
| 4098 | } |
---|
| 4099 | } |
---|
| 4100 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4101 | // TGT_CMD to LLSC FIFO |
---|
| 4102 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4103 | |
---|
| 4104 | if ( cmd_llsc_fifo_put ) { |
---|
| 4105 | if ( cmd_llsc_fifo_get ) { |
---|
| 4106 | m_cmd_llsc_addr_fifo.put_and_get((addr_t)(p_vci_tgt.address.read())); |
---|
| 4107 | m_cmd_llsc_sc_fifo.put_and_get(p_vci_tgt.cmd.read() == vci_param::CMD_STORE_COND); |
---|
| 4108 | m_cmd_llsc_srcid_fifo.put_and_get(p_vci_tgt.srcid.read()); |
---|
| 4109 | m_cmd_llsc_trdid_fifo.put_and_get(p_vci_tgt.trdid.read()); |
---|
| 4110 | m_cmd_llsc_pktid_fifo.put_and_get(p_vci_tgt.pktid.read()); |
---|
| 4111 | m_cmd_llsc_wdata_fifo.put_and_get(p_vci_tgt.wdata.read()); |
---|
| 4112 | } else { |
---|
| 4113 | m_cmd_llsc_addr_fifo.simple_put((addr_t)(p_vci_tgt.address.read())); |
---|
| 4114 | m_cmd_llsc_sc_fifo.simple_put(p_vci_tgt.cmd.read() == vci_param::CMD_STORE_COND); |
---|
| 4115 | m_cmd_llsc_srcid_fifo.simple_put(p_vci_tgt.srcid.read()); |
---|
| 4116 | m_cmd_llsc_trdid_fifo.simple_put(p_vci_tgt.trdid.read()); |
---|
| 4117 | m_cmd_llsc_pktid_fifo.simple_put(p_vci_tgt.pktid.read()); |
---|
| 4118 | m_cmd_llsc_wdata_fifo.simple_put(p_vci_tgt.wdata.read()); |
---|
| 4119 | } |
---|
| 4120 | } else { |
---|
| 4121 | if ( cmd_llsc_fifo_get ) { |
---|
| 4122 | m_cmd_llsc_addr_fifo.simple_get(); |
---|
| 4123 | m_cmd_llsc_sc_fifo.simple_get(); |
---|
| 4124 | m_cmd_llsc_srcid_fifo.simple_get(); |
---|
| 4125 | m_cmd_llsc_trdid_fifo.simple_get(); |
---|
| 4126 | m_cmd_llsc_pktid_fifo.simple_get(); |
---|
| 4127 | m_cmd_llsc_wdata_fifo.simple_get(); |
---|
| 4128 | } |
---|
| 4129 | } |
---|
| 4130 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4131 | // WRITE to INIT_CMD FIFO |
---|
| 4132 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4133 | |
---|
| 4134 | if ( write_to_init_cmd_fifo_put ) { |
---|
| 4135 | if ( write_to_init_cmd_fifo_get ) { |
---|
| 4136 | m_write_to_init_cmd_inst_fifo.put_and_get(write_to_init_cmd_fifo_inst); |
---|
| 4137 | m_write_to_init_cmd_srcid_fifo.put_and_get(write_to_init_cmd_fifo_srcid); |
---|
| 4138 | } else { |
---|
| 4139 | m_write_to_init_cmd_inst_fifo.simple_put(write_to_init_cmd_fifo_inst); |
---|
| 4140 | m_write_to_init_cmd_srcid_fifo.simple_put(write_to_init_cmd_fifo_srcid); |
---|
| 4141 | } |
---|
| 4142 | } else { |
---|
| 4143 | if ( write_to_init_cmd_fifo_get ) { |
---|
| 4144 | m_write_to_init_cmd_inst_fifo.simple_get(); |
---|
| 4145 | m_write_to_init_cmd_srcid_fifo.simple_get(); |
---|
| 4146 | } |
---|
| 4147 | } |
---|
| 4148 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4149 | // XRAM_RSP to INIT_CMD FIFO |
---|
| 4150 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4151 | |
---|
| 4152 | if ( xram_rsp_to_init_cmd_fifo_put ) { |
---|
| 4153 | if ( xram_rsp_to_init_cmd_fifo_get ) { |
---|
| 4154 | m_xram_rsp_to_init_cmd_inst_fifo.put_and_get(xram_rsp_to_init_cmd_fifo_inst); |
---|
| 4155 | m_xram_rsp_to_init_cmd_srcid_fifo.put_and_get(xram_rsp_to_init_cmd_fifo_srcid); |
---|
| 4156 | } else { |
---|
| 4157 | m_xram_rsp_to_init_cmd_inst_fifo.simple_put(xram_rsp_to_init_cmd_fifo_inst); |
---|
| 4158 | m_xram_rsp_to_init_cmd_srcid_fifo.simple_put(xram_rsp_to_init_cmd_fifo_srcid); |
---|
| 4159 | } |
---|
| 4160 | } else { |
---|
| 4161 | if ( xram_rsp_to_init_cmd_fifo_get ) { |
---|
| 4162 | m_xram_rsp_to_init_cmd_inst_fifo.simple_get(); |
---|
| 4163 | m_xram_rsp_to_init_cmd_srcid_fifo.simple_get(); |
---|
| 4164 | } |
---|
| 4165 | } |
---|
| 4166 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4167 | // LLSC to INIT_CMD FIFO |
---|
| 4168 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 4169 | |
---|
| 4170 | if ( llsc_to_init_cmd_fifo_put ) { |
---|
| 4171 | if ( llsc_to_init_cmd_fifo_get ) { |
---|
| 4172 | m_llsc_to_init_cmd_inst_fifo.put_and_get(llsc_to_init_cmd_fifo_inst); |
---|
| 4173 | m_llsc_to_init_cmd_srcid_fifo.put_and_get(llsc_to_init_cmd_fifo_srcid); |
---|
| 4174 | } else { |
---|
| 4175 | m_llsc_to_init_cmd_inst_fifo.simple_put(llsc_to_init_cmd_fifo_inst); |
---|
| 4176 | m_llsc_to_init_cmd_srcid_fifo.simple_put(llsc_to_init_cmd_fifo_srcid); |
---|
| 4177 | } |
---|
| 4178 | } else { |
---|
| 4179 | if ( llsc_to_init_cmd_fifo_get ) { |
---|
| 4180 | m_llsc_to_init_cmd_inst_fifo.simple_get(); |
---|
| 4181 | m_llsc_to_init_cmd_srcid_fifo.simple_get(); |
---|
| 4182 | } |
---|
| 4183 | } |
---|
| 4184 | |
---|
| 4185 | |
---|
| 4186 | ////////////////////////////////////////////////////////////// |
---|
| 4187 | m_cpt_cycles++; |
---|
| 4188 | |
---|
| 4189 | } // end transition() |
---|
| 4190 | |
---|
| 4191 | ///////////////////////////// |
---|
| 4192 | tmpl(void)::genMoore() |
---|
| 4193 | ///////////////////////////// |
---|
| 4194 | { |
---|
| 4195 | //////////////////////////////////////////////////////////// |
---|
| 4196 | // Command signals on the p_vci_ixr port |
---|
| 4197 | //////////////////////////////////////////////////////////// |
---|
| 4198 | |
---|
| 4199 | |
---|
| 4200 | p_vci_ixr.be = 0xF; |
---|
| 4201 | p_vci_ixr.pktid = 0; |
---|
| 4202 | p_vci_ixr.srcid = m_srcid_ixr; |
---|
| 4203 | p_vci_ixr.cons = false; |
---|
| 4204 | p_vci_ixr.wrap = false; |
---|
| 4205 | p_vci_ixr.contig = true; |
---|
| 4206 | p_vci_ixr.clen = 0; |
---|
| 4207 | p_vci_ixr.cfixed = false; |
---|
| 4208 | |
---|
| 4209 | if ( r_ixr_cmd_fsm.read() == IXR_CMD_READ_NLINE ) { |
---|
| 4210 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
| 4211 | p_vci_ixr.cmdval = true; |
---|
| 4212 | p_vci_ixr.address = (addr_t)(r_read_to_ixr_cmd_nline.read()*m_words*4); |
---|
| 4213 | p_vci_ixr.plen = m_words*4; |
---|
| 4214 | p_vci_ixr.wdata = 0x00000000; |
---|
| 4215 | p_vci_ixr.trdid = r_read_to_ixr_cmd_trdid.read(); |
---|
| 4216 | p_vci_ixr.eop = true; |
---|
| 4217 | } |
---|
| 4218 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_LLSC_NLINE ) { |
---|
| 4219 | if(r_llsc_to_ixr_cmd_write.read()){ |
---|
| 4220 | p_vci_ixr.cmd = vci_param::CMD_WRITE; |
---|
| 4221 | p_vci_ixr.cmdval = true; |
---|
| 4222 | p_vci_ixr.address = (addr_t)((r_llsc_to_ixr_cmd_nline.read()*m_words+r_ixr_cmd_cpt.read())*4); |
---|
| 4223 | p_vci_ixr.plen = m_words*4; |
---|
| 4224 | p_vci_ixr.wdata = r_llsc_to_ixr_cmd_data[r_ixr_cmd_cpt.read()].read(); |
---|
| 4225 | p_vci_ixr.trdid = r_llsc_to_ixr_cmd_trdid.read(); |
---|
| 4226 | p_vci_ixr.eop = (r_ixr_cmd_cpt == (m_words-1)); |
---|
| 4227 | } else { |
---|
| 4228 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
| 4229 | p_vci_ixr.cmdval = true; |
---|
| 4230 | p_vci_ixr.address = (addr_t)(r_llsc_to_ixr_cmd_nline.read()*m_words*4); |
---|
| 4231 | p_vci_ixr.plen = m_words*4; |
---|
| 4232 | p_vci_ixr.wdata = 0x00000000; |
---|
| 4233 | p_vci_ixr.trdid = r_llsc_to_ixr_cmd_trdid.read(); |
---|
| 4234 | p_vci_ixr.eop = true; |
---|
| 4235 | } |
---|
| 4236 | } |
---|
| 4237 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_WRITE_NLINE ) { |
---|
| 4238 | if(r_write_to_ixr_cmd_write.read()){ |
---|
| 4239 | p_vci_ixr.cmd = vci_param::CMD_WRITE; |
---|
| 4240 | p_vci_ixr.cmdval = true; |
---|
| 4241 | p_vci_ixr.address = (addr_t)((r_write_to_ixr_cmd_nline.read()*m_words+r_ixr_cmd_cpt.read())*4); |
---|
| 4242 | p_vci_ixr.plen = m_words*4; |
---|
| 4243 | p_vci_ixr.wdata = r_write_to_ixr_cmd_data[r_ixr_cmd_cpt.read()].read(); |
---|
| 4244 | p_vci_ixr.trdid = r_write_to_ixr_cmd_trdid.read(); |
---|
| 4245 | p_vci_ixr.eop = (r_ixr_cmd_cpt == (m_words-1)); |
---|
| 4246 | } else { |
---|
| 4247 | p_vci_ixr.cmd = vci_param::CMD_READ; |
---|
| 4248 | p_vci_ixr.cmdval = true; |
---|
| 4249 | p_vci_ixr.address = (addr_t)(r_write_to_ixr_cmd_nline.read()*m_words*4); |
---|
| 4250 | p_vci_ixr.plen = m_words*4; |
---|
| 4251 | p_vci_ixr.wdata = 0x00000000; |
---|
| 4252 | p_vci_ixr.trdid = r_write_to_ixr_cmd_trdid.read(); |
---|
| 4253 | p_vci_ixr.eop = true; |
---|
| 4254 | } |
---|
| 4255 | } |
---|
| 4256 | else if ( r_ixr_cmd_fsm.read() == IXR_CMD_XRAM_DATA ) { |
---|
| 4257 | p_vci_ixr.cmd = vci_param::CMD_WRITE; |
---|
| 4258 | p_vci_ixr.cmdval = true; |
---|
| 4259 | p_vci_ixr.address = (addr_t)((r_xram_rsp_to_ixr_cmd_nline.read()*m_words+r_ixr_cmd_cpt.read())*4); |
---|
| 4260 | p_vci_ixr.plen = m_words*4; |
---|
| 4261 | p_vci_ixr.wdata = r_xram_rsp_to_ixr_cmd_data[r_ixr_cmd_cpt.read()].read(); |
---|
| 4262 | p_vci_ixr.trdid = r_xram_rsp_to_ixr_cmd_trdid.read(); |
---|
| 4263 | p_vci_ixr.eop = (r_ixr_cmd_cpt == (m_words-1)); |
---|
| 4264 | } else { |
---|
| 4265 | p_vci_ixr.cmdval = false; |
---|
| 4266 | p_vci_ixr.address = 0; |
---|
| 4267 | p_vci_ixr.plen = 0; |
---|
| 4268 | p_vci_ixr.wdata = 0; |
---|
| 4269 | p_vci_ixr.trdid = 0; |
---|
| 4270 | p_vci_ixr.eop = false; |
---|
| 4271 | } |
---|
| 4272 | |
---|
| 4273 | //////////////////////////////////////////////////// |
---|
| 4274 | // Response signals on the p_vci_ixr port |
---|
| 4275 | //////////////////////////////////////////////////// |
---|
| 4276 | |
---|
| 4277 | if ( ((r_alloc_trt_fsm.read() == ALLOC_TRT_IXR_RSP) && |
---|
| 4278 | (r_ixr_rsp_fsm.read() == IXR_RSP_TRT_READ)) || |
---|
| 4279 | (r_ixr_rsp_fsm.read() == IXR_RSP_ACK) ) p_vci_ixr.rspack = true; |
---|
| 4280 | else p_vci_ixr.rspack = false; |
---|
| 4281 | |
---|
| 4282 | //////////////////////////////////////////////////// |
---|
| 4283 | // Command signals on the p_vci_tgt port |
---|
| 4284 | //////////////////////////////////////////////////// |
---|
| 4285 | |
---|
| 4286 | switch ((tgt_cmd_fsm_state_e)r_tgt_cmd_fsm.read()) { |
---|
| 4287 | case TGT_CMD_IDLE: |
---|
| 4288 | p_vci_tgt.cmdack = false; |
---|
| 4289 | break; |
---|
| 4290 | case TGT_CMD_READ: |
---|
| 4291 | p_vci_tgt.cmdack = m_cmd_read_addr_fifo.wok(); |
---|
| 4292 | break; |
---|
| 4293 | case TGT_CMD_READ_EOP: |
---|
| 4294 | p_vci_tgt.cmdack = true; |
---|
| 4295 | break; |
---|
| 4296 | case TGT_CMD_WRITE: |
---|
| 4297 | p_vci_tgt.cmdack = m_cmd_write_addr_fifo.wok(); |
---|
| 4298 | break; |
---|
| 4299 | case TGT_CMD_ATOMIC: |
---|
| 4300 | p_vci_tgt.cmdack = m_cmd_llsc_addr_fifo.wok(); |
---|
| 4301 | break; |
---|
| 4302 | default: |
---|
| 4303 | p_vci_tgt.cmdack = false; |
---|
| 4304 | break; |
---|
| 4305 | } |
---|
| 4306 | |
---|
| 4307 | //////////////////////////////////////////////////// |
---|
| 4308 | // Response signals on the p_vci_tgt port |
---|
| 4309 | //////////////////////////////////////////////////// |
---|
| 4310 | switch ( r_tgt_rsp_fsm.read() ) { |
---|
| 4311 | |
---|
| 4312 | case TGT_RSP_READ_IDLE: |
---|
| 4313 | case TGT_RSP_WRITE_IDLE: |
---|
| 4314 | case TGT_RSP_LLSC_IDLE: |
---|
| 4315 | case TGT_RSP_XRAM_IDLE: |
---|
| 4316 | case TGT_RSP_INIT_IDLE: |
---|
| 4317 | case TGT_RSP_CLEANUP_IDLE: |
---|
| 4318 | p_vci_tgt.rspval = false; |
---|
| 4319 | p_vci_tgt.rsrcid = 0; |
---|
| 4320 | p_vci_tgt.rdata = 0; |
---|
| 4321 | p_vci_tgt.rpktid = 0; |
---|
| 4322 | p_vci_tgt.rtrdid = 0; |
---|
| 4323 | p_vci_tgt.rerror = 0; |
---|
| 4324 | p_vci_tgt.reop = false; |
---|
| 4325 | break; |
---|
| 4326 | case TGT_RSP_READ: |
---|
| 4327 | p_vci_tgt.rspval = true; |
---|
| 4328 | p_vci_tgt.rdata = r_read_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read(); |
---|
| 4329 | p_vci_tgt.rsrcid = r_read_to_tgt_rsp_srcid.read(); |
---|
| 4330 | p_vci_tgt.rtrdid = r_read_to_tgt_rsp_trdid.read(); |
---|
| 4331 | p_vci_tgt.rpktid = r_read_to_tgt_rsp_pktid.read(); |
---|
| 4332 | p_vci_tgt.rerror = 0; |
---|
| 4333 | p_vci_tgt.reop = ( r_tgt_rsp_cpt.read() == (r_read_to_tgt_rsp_word.read()+r_read_to_tgt_rsp_length-1) ); |
---|
| 4334 | break; |
---|
| 4335 | case TGT_RSP_WRITE: |
---|
| 4336 | p_vci_tgt.rspval = true; |
---|
| 4337 | p_vci_tgt.rdata = 0; |
---|
| 4338 | p_vci_tgt.rsrcid = r_write_to_tgt_rsp_srcid.read(); |
---|
| 4339 | p_vci_tgt.rtrdid = r_write_to_tgt_rsp_trdid.read(); |
---|
| 4340 | p_vci_tgt.rpktid = r_write_to_tgt_rsp_pktid.read(); |
---|
[83] | 4341 | p_vci_tgt.rerror = 0x2 & ( (1 << vci_param::E) - 1); // Write OK |
---|
[2] | 4342 | p_vci_tgt.reop = true; |
---|
| 4343 | break; |
---|
| 4344 | case TGT_RSP_CLEANUP: |
---|
| 4345 | p_vci_tgt.rspval = true; |
---|
| 4346 | p_vci_tgt.rdata = 0; |
---|
| 4347 | p_vci_tgt.rsrcid = r_cleanup_to_tgt_rsp_srcid.read(); |
---|
| 4348 | p_vci_tgt.rtrdid = r_cleanup_to_tgt_rsp_trdid.read(); |
---|
| 4349 | p_vci_tgt.rpktid = r_cleanup_to_tgt_rsp_pktid.read(); |
---|
| 4350 | p_vci_tgt.rerror = 0; |
---|
| 4351 | p_vci_tgt.reop = true; |
---|
| 4352 | break; |
---|
| 4353 | case TGT_RSP_LLSC: |
---|
| 4354 | p_vci_tgt.rspval = true; |
---|
| 4355 | p_vci_tgt.rdata = r_llsc_to_tgt_rsp_data.read(); |
---|
| 4356 | p_vci_tgt.rsrcid = r_llsc_to_tgt_rsp_srcid.read(); |
---|
| 4357 | p_vci_tgt.rtrdid = r_llsc_to_tgt_rsp_trdid.read(); |
---|
| 4358 | p_vci_tgt.rpktid = r_llsc_to_tgt_rsp_pktid.read(); |
---|
| 4359 | p_vci_tgt.rerror = 0; |
---|
| 4360 | p_vci_tgt.reop = true; |
---|
| 4361 | break; |
---|
| 4362 | case TGT_RSP_XRAM: |
---|
| 4363 | p_vci_tgt.rspval = true; |
---|
| 4364 | p_vci_tgt.rdata = r_xram_rsp_to_tgt_rsp_data[r_tgt_rsp_cpt.read()].read(); |
---|
| 4365 | p_vci_tgt.rsrcid = r_xram_rsp_to_tgt_rsp_srcid.read(); |
---|
| 4366 | p_vci_tgt.rtrdid = r_xram_rsp_to_tgt_rsp_trdid.read(); |
---|
| 4367 | p_vci_tgt.rpktid = r_xram_rsp_to_tgt_rsp_pktid.read(); |
---|
| 4368 | p_vci_tgt.rerror = 0; |
---|
| 4369 | p_vci_tgt.reop = ( r_tgt_rsp_cpt.read() == (r_xram_rsp_to_tgt_rsp_word.read()+r_xram_rsp_to_tgt_rsp_length.read()-1)); |
---|
| 4370 | break; |
---|
| 4371 | case TGT_RSP_INIT: |
---|
| 4372 | p_vci_tgt.rspval = true; |
---|
| 4373 | p_vci_tgt.rdata = 0; |
---|
| 4374 | p_vci_tgt.rsrcid = r_init_rsp_to_tgt_rsp_srcid.read(); |
---|
| 4375 | p_vci_tgt.rtrdid = r_init_rsp_to_tgt_rsp_trdid.read(); |
---|
| 4376 | p_vci_tgt.rpktid = r_init_rsp_to_tgt_rsp_pktid.read(); |
---|
| 4377 | p_vci_tgt.rerror = 0; |
---|
| 4378 | p_vci_tgt.reop = true; |
---|
| 4379 | break; |
---|
| 4380 | } // end switch r_tgt_rsp_fsm |
---|
| 4381 | |
---|
| 4382 | /////////////////////////////////////////////////// |
---|
| 4383 | // Command signals on the p_vci_ini port |
---|
| 4384 | /////////////////////////////////////////////////// |
---|
| 4385 | |
---|
| 4386 | p_vci_ini.cmd = vci_param::CMD_WRITE; |
---|
| 4387 | p_vci_ini.srcid = m_srcid_ini; |
---|
| 4388 | p_vci_ini.pktid = 0; |
---|
| 4389 | p_vci_ini.cons = true; |
---|
| 4390 | p_vci_ini.wrap = false; |
---|
| 4391 | p_vci_ini.contig = false; |
---|
| 4392 | p_vci_ini.clen = 0; |
---|
| 4393 | p_vci_ini.cfixed = false; |
---|
| 4394 | |
---|
| 4395 | switch ( r_init_cmd_fsm.read() ) { |
---|
| 4396 | |
---|
| 4397 | case INIT_CMD_UPDT_IDLE: |
---|
| 4398 | case INIT_CMD_INVAL_IDLE: |
---|
| 4399 | case INIT_CMD_SC_UPDT_IDLE: |
---|
| 4400 | p_vci_ini.cmdval = false; |
---|
| 4401 | p_vci_ini.address = 0; |
---|
| 4402 | p_vci_ini.wdata = 0; |
---|
| 4403 | p_vci_ini.be = 0; |
---|
| 4404 | p_vci_ini.plen = 0; |
---|
| 4405 | p_vci_ini.trdid = 0; |
---|
| 4406 | p_vci_ini.eop = false; |
---|
| 4407 | break; |
---|
| 4408 | case INIT_CMD_INVAL_NLINE: |
---|
| 4409 | p_vci_ini.cmdval = m_xram_rsp_to_init_cmd_inst_fifo.rok(); |
---|
| 4410 | if(m_xram_rsp_to_init_cmd_inst_fifo.rok()){ |
---|
| 4411 | if(m_xram_rsp_to_init_cmd_inst_fifo.read()) { |
---|
| 4412 | p_vci_ini.address = (addr_t)(m_coherence_table[m_xram_rsp_to_init_cmd_srcid_fifo.read()]+8); |
---|
| 4413 | } else { |
---|
| 4414 | p_vci_ini.address = (addr_t)(m_coherence_table[m_xram_rsp_to_init_cmd_srcid_fifo.read()]); |
---|
| 4415 | } |
---|
| 4416 | } else p_vci_ini.address = 0; // prevent segmentation faults by reading an empty fifo |
---|
| 4417 | p_vci_ini.wdata = (uint32_t)r_xram_rsp_to_init_cmd_nline.read(); |
---|
| 4418 | p_vci_ini.be = ((r_xram_rsp_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
| 4419 | p_vci_ini.plen = 4; |
---|
| 4420 | p_vci_ini.trdid = r_xram_rsp_to_init_cmd_trdid.read(); |
---|
| 4421 | p_vci_ini.eop = true; |
---|
| 4422 | break; |
---|
| 4423 | case INIT_CMD_XRAM_BRDCAST: |
---|
| 4424 | p_vci_ini.cmdval = true; |
---|
[82] | 4425 | p_vci_ini.address = broadcast_addr; |
---|
[2] | 4426 | p_vci_ini.wdata = (uint32_t)r_xram_rsp_to_init_cmd_nline.read(); |
---|
| 4427 | p_vci_ini.be = ((r_xram_rsp_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
| 4428 | p_vci_ini.plen = 4; |
---|
| 4429 | p_vci_ini.trdid = r_xram_rsp_to_init_cmd_trdid.read(); |
---|
| 4430 | p_vci_ini.eop = true; |
---|
| 4431 | break; |
---|
| 4432 | |
---|
| 4433 | case INIT_CMD_WRITE_BRDCAST: |
---|
| 4434 | p_vci_ini.cmdval = true; |
---|
[82] | 4435 | p_vci_ini.address = broadcast_addr; |
---|
[2] | 4436 | p_vci_ini.wdata = (addr_t)r_write_to_init_cmd_nline.read(); |
---|
| 4437 | p_vci_ini.be = ((r_write_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
| 4438 | p_vci_ini.plen = 4 ; |
---|
| 4439 | p_vci_ini.eop = true; |
---|
| 4440 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
| 4441 | break; |
---|
| 4442 | case INIT_CMD_UPDT_NLINE: |
---|
| 4443 | p_vci_ini.cmdval = m_write_to_init_cmd_inst_fifo.rok(); |
---|
| 4444 | if(m_write_to_init_cmd_inst_fifo.rok()){ |
---|
| 4445 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 4); |
---|
| 4446 | } else { |
---|
| 4447 | p_vci_ini.address = 0; |
---|
| 4448 | } |
---|
| 4449 | p_vci_ini.wdata = (uint32_t)r_write_to_init_cmd_nline.read(); |
---|
| 4450 | p_vci_ini.be = ((r_write_to_init_cmd_nline.read() >> 32 ) & 0x3); |
---|
| 4451 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
| 4452 | p_vci_ini.eop = false; |
---|
| 4453 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
| 4454 | break; |
---|
| 4455 | case INIT_CMD_UPDT_INDEX: |
---|
| 4456 | p_vci_ini.cmdval = true; |
---|
| 4457 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 4); |
---|
| 4458 | p_vci_ini.wdata = r_write_to_init_cmd_index.read(); |
---|
| 4459 | p_vci_ini.be = 0xF; |
---|
| 4460 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
| 4461 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
| 4462 | p_vci_ini.eop = false; |
---|
| 4463 | break; |
---|
| 4464 | case INIT_CMD_UPDT_DATA: |
---|
| 4465 | p_vci_ini.cmdval = true; |
---|
| 4466 | p_vci_ini.address = (addr_t)(m_coherence_table[m_write_to_init_cmd_srcid_fifo.read()] + 4); |
---|
| 4467 | p_vci_ini.wdata = r_write_to_init_cmd_data[r_init_cmd_cpt.read() + |
---|
| 4468 | r_write_to_init_cmd_index.read()].read(); |
---|
| 4469 | if(r_write_to_init_cmd_we[r_init_cmd_cpt.read() + |
---|
| 4470 | r_write_to_init_cmd_index.read()].read()) |
---|
| 4471 | p_vci_ini.be = 0xF; |
---|
| 4472 | else p_vci_ini.be = 0x0; |
---|
| 4473 | p_vci_ini.plen = 4 * (r_write_to_init_cmd_count.read() + 2); |
---|
| 4474 | p_vci_ini.trdid = r_write_to_init_cmd_trdid.read(); |
---|
| 4475 | p_vci_ini.eop = ( r_init_cmd_cpt.read() == (r_write_to_init_cmd_count.read()-1) ); |
---|
| 4476 | break; |
---|
| 4477 | |
---|
| 4478 | case INIT_CMD_SC_BRDCAST: |
---|
| 4479 | p_vci_ini.cmdval = true; |
---|
[82] | 4480 | p_vci_ini.address = broadcast_addr; |
---|
[2] | 4481 | p_vci_ini.wdata = (addr_t)r_llsc_to_init_cmd_nline.read(); |
---|
| 4482 | p_vci_ini.be = ((r_llsc_to_init_cmd_nline.read() >> 32) & 0x3); |
---|
| 4483 | p_vci_ini.plen = 4 ; |
---|
| 4484 | p_vci_ini.eop = true; |
---|
| 4485 | p_vci_ini.trdid = r_llsc_to_init_cmd_trdid.read(); |
---|
| 4486 | break; |
---|
| 4487 | case INIT_CMD_SC_UPDT_NLINE: |
---|
| 4488 | p_vci_ini.cmdval = m_llsc_to_init_cmd_inst_fifo.rok(); |
---|
| 4489 | if(m_llsc_to_init_cmd_inst_fifo.rok()){ |
---|
| 4490 | p_vci_ini.address = (addr_t)(m_coherence_table[m_llsc_to_init_cmd_srcid_fifo.read()] + 4); |
---|
| 4491 | } else { |
---|
| 4492 | p_vci_ini.address = 0; |
---|
| 4493 | } |
---|
| 4494 | p_vci_ini.wdata = (uint32_t)r_llsc_to_init_cmd_nline.read(); |
---|
| 4495 | p_vci_ini.be = ((r_llsc_to_init_cmd_nline.read() >> 32 ) & 0x3); |
---|
| 4496 | p_vci_ini.plen = 4 * 3; |
---|
| 4497 | p_vci_ini.eop = false; |
---|
| 4498 | p_vci_ini.trdid = r_llsc_to_init_cmd_trdid.read(); |
---|
| 4499 | break; |
---|
| 4500 | case INIT_CMD_SC_UPDT_INDEX: |
---|
| 4501 | p_vci_ini.cmdval = true; |
---|
| 4502 | p_vci_ini.address = (addr_t)(m_coherence_table[m_llsc_to_init_cmd_srcid_fifo.read()] + 4); |
---|
| 4503 | p_vci_ini.wdata = r_llsc_to_init_cmd_index.read(); |
---|
| 4504 | p_vci_ini.be = 0xF; |
---|
| 4505 | p_vci_ini.plen = 4 * 3; |
---|
| 4506 | p_vci_ini.trdid = r_llsc_to_init_cmd_trdid.read(); |
---|
| 4507 | p_vci_ini.eop = false; |
---|
| 4508 | break; |
---|
| 4509 | case INIT_CMD_SC_UPDT_DATA: |
---|
| 4510 | p_vci_ini.cmdval = true; |
---|
| 4511 | p_vci_ini.address = (addr_t)(m_coherence_table[m_llsc_to_init_cmd_srcid_fifo.read()] + 4); |
---|
| 4512 | p_vci_ini.wdata = r_llsc_to_init_cmd_wdata.read(); |
---|
| 4513 | p_vci_ini.be = 0xF; |
---|
| 4514 | p_vci_ini.plen = 4 * 3; |
---|
| 4515 | p_vci_ini.trdid = r_llsc_to_init_cmd_trdid.read(); |
---|
| 4516 | p_vci_ini.eop = true; |
---|
| 4517 | break; |
---|
| 4518 | |
---|
| 4519 | } // end switch r_init_cmd_fsm |
---|
| 4520 | |
---|
| 4521 | ////////////////////////////////////////////////////// |
---|
| 4522 | // Response signals on the p_vci_ini port |
---|
| 4523 | ////////////////////////////////////////////////////// |
---|
| 4524 | |
---|
| 4525 | if ( r_init_rsp_fsm.read() == INIT_RSP_IDLE ) p_vci_ini.rspack = true; |
---|
| 4526 | else p_vci_ini.rspack = false; |
---|
| 4527 | |
---|
| 4528 | ////////////////////////////////////////////////////// |
---|
| 4529 | // Response signals on the p_vci_tgt_cleanup port |
---|
| 4530 | ////////////////////////////////////////////////////// |
---|
| 4531 | p_vci_tgt_cleanup.rspval = false; |
---|
| 4532 | p_vci_tgt_cleanup.rsrcid = 0; |
---|
| 4533 | p_vci_tgt_cleanup.rdata = 0; |
---|
| 4534 | p_vci_tgt_cleanup.rpktid = 0; |
---|
| 4535 | p_vci_tgt_cleanup.rtrdid = 0; |
---|
| 4536 | p_vci_tgt_cleanup.rerror = 0; |
---|
| 4537 | p_vci_tgt_cleanup.reop = false; |
---|
| 4538 | p_vci_tgt_cleanup.cmdack = false ; |
---|
| 4539 | |
---|
| 4540 | switch(r_cleanup_fsm.read()){ |
---|
| 4541 | case CLEANUP_IDLE: |
---|
| 4542 | { |
---|
| 4543 | p_vci_tgt_cleanup.cmdack = true ; |
---|
| 4544 | break; |
---|
| 4545 | } |
---|
| 4546 | case CLEANUP_RSP: |
---|
| 4547 | { |
---|
| 4548 | p_vci_tgt_cleanup.rspval = true; |
---|
| 4549 | p_vci_tgt_cleanup.rdata = 0; |
---|
| 4550 | p_vci_tgt_cleanup.rsrcid = r_cleanup_srcid.read(); |
---|
| 4551 | p_vci_tgt_cleanup.rpktid = r_cleanup_pktid.read(); |
---|
| 4552 | p_vci_tgt_cleanup.rtrdid = r_cleanup_trdid.read(); |
---|
[83] | 4553 | p_vci_tgt_cleanup.rerror = 0x2 & ( (1 << vci_param::E) - 1); |
---|
[2] | 4554 | p_vci_tgt_cleanup.reop = 1; |
---|
| 4555 | break; |
---|
| 4556 | } |
---|
| 4557 | |
---|
| 4558 | } |
---|
| 4559 | |
---|
| 4560 | } // end genMoore() |
---|
| 4561 | |
---|
| 4562 | }} // end name space |
---|
| 4563 | |
---|
| 4564 | // Local Variables: |
---|
| 4565 | // tab-width: 4 |
---|
| 4566 | // c-basic-offset: 4 |
---|
| 4567 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
---|
| 4568 | // indent-tabs-mode: nil |
---|
| 4569 | // End: |
---|
| 4570 | |
---|
| 4571 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
---|
| 4572 | |
---|