[326] | 1 | |
---|
| 2 | /* SOCLIB_LGPL_HEADER_BEGIN |
---|
| 3 | * |
---|
| 4 | * This file is part of SoCLib, GNU LGPLv2.1. |
---|
| 5 | * |
---|
| 6 | * SoCLib is free software; you can redistribute it and/or modify it |
---|
| 7 | * under the terms of the GNU Lesser General Public License as published |
---|
| 8 | * by the Free Software Foundation; version 2.1 of the License. |
---|
| 9 | * |
---|
| 10 | * SoCLib is distributed in the hope that it will be useful, but |
---|
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
| 13 | * Lesser General Public License for more details. |
---|
| 14 | * |
---|
| 15 | * You should have received a copy of the GNU Lesser General Public |
---|
| 16 | * License along with SoCLib; if not, write to the Free Software |
---|
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
---|
| 18 | * 02110-1301 USA |
---|
| 19 | * |
---|
| 20 | * SOCLIB_LGPL_HEADER_END |
---|
| 21 | * |
---|
| 22 | * Author : Abdelmalek SI MERABET |
---|
| 23 | * Date : Februrary 2011 |
---|
| 24 | * Copyright: UPMC - LIP6 |
---|
| 25 | */ |
---|
| 26 | #ifndef DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
---|
| 27 | #define DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
---|
| 28 | |
---|
| 29 | #include "caba_base_module.h" |
---|
| 30 | #include "generic_fifo.h" |
---|
| 31 | #include "mapping_table.h" |
---|
| 32 | #include "ring_signals_fast.h" |
---|
| 33 | #include "dspin_interface.h" |
---|
| 34 | |
---|
| 35 | #define BRDCST_TGT_MASK 0xFFFFFFFFE1ULL |
---|
[357] | 36 | #define HI_DEBUG |
---|
[326] | 37 | |
---|
| 38 | namespace soclib { namespace caba { |
---|
| 39 | |
---|
| 40 | namespace { |
---|
| 41 | |
---|
| 42 | const char *ring_cmd_fsm_state_str_hi[] = { |
---|
| 43 | "CMD_IDLE", |
---|
| 44 | "OWNER", |
---|
| 45 | "BDC_FIRST", |
---|
| 46 | "BDC_SECOND", |
---|
| 47 | "SENDING", |
---|
| 48 | }; |
---|
| 49 | |
---|
| 50 | #ifdef HI_DEBUG |
---|
| 51 | |
---|
| 52 | const char *ring_rsp_fsm_state_str_hi[] = { |
---|
| 53 | "RSP_IDLE", |
---|
| 54 | "ALLOC", |
---|
| 55 | "NALLOC", |
---|
| 56 | }; |
---|
| 57 | #endif |
---|
| 58 | |
---|
| 59 | } |
---|
| 60 | template<typename vci_param, int ring_cmd_data_size, int ring_rsp_data_size> |
---|
| 61 | class DspinHalfGatewayInitiatorFastC |
---|
| 62 | { |
---|
| 63 | |
---|
| 64 | typedef LocalRingSignals ring_signal_t; |
---|
| 65 | typedef DspinInput<ring_cmd_data_size> cmd_in_t; |
---|
| 66 | typedef DspinOutput<ring_rsp_data_size> rsp_out_t; |
---|
| 67 | |
---|
| 68 | private: |
---|
| 69 | |
---|
| 70 | enum ring_rsp_fsm_state_e { |
---|
| 71 | RSP_IDLE, // waiting for first flit of a response packet |
---|
| 72 | ALLOC, // next flit of a local rsp packet |
---|
| 73 | NALLOC, // next flit of a ring rsp packet |
---|
| 74 | }; |
---|
| 75 | |
---|
| 76 | enum ring_cmd_fsm_state_e { |
---|
| 77 | CMD_IDLE, |
---|
| 78 | OWNER, |
---|
| 79 | BDC_FIRST, |
---|
| 80 | BDC_SECOND, |
---|
| 81 | SENDING, |
---|
| 82 | PREEMPT, |
---|
| 83 | }; |
---|
| 84 | |
---|
| 85 | // structural parameters |
---|
| 86 | std::string m_name; |
---|
| 87 | bool m_alloc_init; |
---|
| 88 | |
---|
| 89 | |
---|
| 90 | // internal fifos |
---|
| 91 | GenericFifo<uint64_t > m_cmd_fifo; // fifo for the local command packet |
---|
| 92 | GenericFifo<uint64_t > m_rsp_fifo; // fifo for the local response packet |
---|
| 93 | |
---|
| 94 | // routing table |
---|
| 95 | soclib::common::AddressDecodingTable<uint32_t, bool> m_lt; |
---|
| 96 | |
---|
| 97 | uint64_t r_brdcst_save; |
---|
| 98 | uint32_t m_srcid; |
---|
| 99 | uint32_t m_nb_target; |
---|
| 100 | uint32_t m_x_width; |
---|
| 101 | uint32_t m_y_width; |
---|
| 102 | |
---|
| 103 | // internal registers |
---|
| 104 | sc_core::sc_signal<bool> r_preempt; // ring preempted, priority to gate init. |
---|
| 105 | sc_core::sc_signal<uint32_t> r_cpt_tgt; // target id for sequential broadcast |
---|
| 106 | sc_core::sc_signal<uint32_t> r_ring_cmd_fsm; // ring command packet FSM (distributed) |
---|
| 107 | sc_core::sc_signal<uint32_t> r_ring_rsp_fsm; // ring response packet FSM |
---|
| 108 | |
---|
| 109 | public : |
---|
| 110 | |
---|
| 111 | #define __renRegGateInit(x) x((((std::string) name)+"_" #x).c_str()) |
---|
| 112 | |
---|
| 113 | DspinHalfGatewayInitiatorFastC( |
---|
| 114 | const char *name, |
---|
| 115 | bool alloc_init, |
---|
| 116 | const int &wrapper_fifo_depth, |
---|
| 117 | const soclib::common::MappingTable &mt, |
---|
| 118 | const soclib::common::IntTab &ringid, |
---|
| 119 | const uint32_t &nb_target, |
---|
| 120 | const uint32_t &x_width, |
---|
| 121 | const uint32_t &y_width) |
---|
| 122 | : m_name(name), |
---|
| 123 | m_alloc_init(alloc_init), |
---|
| 124 | m_cmd_fifo(((std::string) name)+"m_cmd_fifo", wrapper_fifo_depth), |
---|
| 125 | m_rsp_fifo(((std::string) name)+"m_rsp_fifo", wrapper_fifo_depth), |
---|
| 126 | m_lt(mt.getIdLocalityTable(ringid)), |
---|
| 127 | m_nb_target(nb_target), |
---|
| 128 | m_x_width(x_width), |
---|
| 129 | m_y_width(y_width), |
---|
| 130 | __renRegGateInit(r_cpt_tgt), |
---|
| 131 | __renRegGateInit(r_ring_cmd_fsm), |
---|
| 132 | __renRegGateInit(r_ring_rsp_fsm) |
---|
| 133 | { } // end constructor |
---|
| 134 | |
---|
| 135 | |
---|
| 136 | void reset() |
---|
| 137 | { |
---|
| 138 | if(m_alloc_init) |
---|
| 139 | r_ring_cmd_fsm = OWNER; |
---|
| 140 | else |
---|
| 141 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 142 | |
---|
| 143 | r_ring_rsp_fsm = RSP_IDLE; |
---|
| 144 | m_cmd_fifo.init(); |
---|
| 145 | m_rsp_fifo.init(); |
---|
| 146 | |
---|
| 147 | } |
---|
| 148 | |
---|
| 149 | void transition(const cmd_in_t &p_gate_cmd_in, const rsp_out_t &p_gate_rsp_out, const ring_signal_t p_ring_in, cmd_str &init_cmd, bool &init_rsp_val, const bool tga) |
---|
| 150 | { |
---|
| 151 | |
---|
| 152 | bool cmd_fifo_get = false; |
---|
| 153 | bool cmd_fifo_put = false; |
---|
| 154 | uint64_t cmd_fifo_data = 0; |
---|
| 155 | |
---|
| 156 | bool rsp_fifo_put = false; |
---|
| 157 | uint64_t rsp_fifo_data = 0; |
---|
| 158 | |
---|
| 159 | |
---|
| 160 | //////////// VCI CMD FSM ///////////////////////// |
---|
| 161 | |
---|
| 162 | if (p_gate_cmd_in.write.read()) { |
---|
| 163 | cmd_fifo_data = (uint64_t) p_gate_cmd_in.data.read(); |
---|
| 164 | cmd_fifo_put = m_cmd_fifo.wok(); |
---|
| 165 | } |
---|
| 166 | |
---|
| 167 | bool rsp_fifo_get = p_gate_rsp_out.read.read(); |
---|
| 168 | |
---|
| 169 | //////////// RING CMD FSM ///////////////////////// |
---|
| 170 | switch( r_ring_cmd_fsm ) |
---|
| 171 | { |
---|
| 172 | case CMD_IDLE: |
---|
| 173 | { |
---|
[357] | 174 | bool eop = ( (int) ((m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
[326] | 175 | // tga : target gate allocated |
---|
| 176 | if(m_cmd_fifo.rok()) |
---|
| 177 | { |
---|
| 178 | #ifdef HI_DEBUG |
---|
| 179 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
| 180 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
---|
| 181 | << " - fifo ROK : " << m_cmd_fifo.rok() |
---|
| 182 | << " - fifo _data : " << std::hex << m_cmd_fifo.read() |
---|
| 183 | << " - in grant : " << p_ring_in.cmd_grant |
---|
| 184 | << " - in tga : " << tga |
---|
| 185 | << " - in wok : " << p_ring_in.cmd_r |
---|
| 186 | << " - in data : " << p_ring_in.cmd_data |
---|
| 187 | |
---|
| 188 | << std::endl; |
---|
| 189 | #endif |
---|
[359] | 190 | r_preempt = tga; |
---|
[326] | 191 | |
---|
| 192 | if (m_cmd_fifo.read() & 0x1 == 0x1) // broadcast |
---|
| 193 | { |
---|
| 194 | if (tga || p_ring_in.cmd_grant) |
---|
| 195 | { |
---|
| 196 | r_cpt_tgt = 0; |
---|
| 197 | r_brdcst_save = m_cmd_fifo.read() & BRDCST_TGT_MASK; // save first flit of brdcst |
---|
| 198 | r_ring_cmd_fsm = BDC_FIRST; |
---|
| 199 | } |
---|
| 200 | } |
---|
[357] | 201 | else if (tga) |
---|
[326] | 202 | { |
---|
[359] | 203 | //r_preempt = 1; |
---|
[357] | 204 | |
---|
| 205 | cmd_fifo_get = p_ring_in.cmd_r; |
---|
| 206 | if (eop) |
---|
| 207 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 208 | else |
---|
| 209 | r_ring_cmd_fsm = SENDING; |
---|
| 210 | break; |
---|
| 211 | } |
---|
| 212 | |
---|
| 213 | if(p_ring_in.cmd_grant) |
---|
| 214 | { |
---|
[326] | 215 | r_ring_cmd_fsm = SENDING; |
---|
| 216 | } |
---|
| 217 | |
---|
| 218 | } |
---|
| 219 | } |
---|
| 220 | break; |
---|
| 221 | |
---|
| 222 | case OWNER: |
---|
| 223 | if ( m_cmd_fifo.rok()) // && p_ring_in.cmd_wok.read() ) |
---|
| 224 | { |
---|
| 225 | #ifdef HI_DEBUG |
---|
| 226 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
| 227 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
---|
| 228 | << " - fifo ROK : " << m_cmd_fifo.rok() |
---|
| 229 | << " - in grant : " << p_ring_in.cmd_grant |
---|
| 230 | << " - in wok : " << p_ring_in.cmd_r |
---|
| 231 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
---|
| 232 | << std::endl; |
---|
| 233 | #endif |
---|
| 234 | |
---|
| 235 | bool eop = ( (int) ((m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
| 236 | |
---|
| 237 | if (m_cmd_fifo.read() & 0x1 == 0x1) // broadcast |
---|
| 238 | { |
---|
| 239 | r_cpt_tgt = 0; |
---|
| 240 | r_brdcst_save = m_cmd_fifo.read() & BRDCST_TGT_MASK; // save first flit of brdcst |
---|
| 241 | r_ring_cmd_fsm = BDC_FIRST; |
---|
| 242 | } |
---|
| 243 | // |
---|
| 244 | else |
---|
| 245 | { |
---|
| 246 | if ( eop && p_ring_in.cmd_r ) |
---|
| 247 | { |
---|
| 248 | cmd_fifo_get = true; |
---|
| 249 | if ( p_ring_in.cmd_grant ) |
---|
| 250 | r_ring_cmd_fsm = OWNER; |
---|
| 251 | else |
---|
| 252 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 253 | } |
---|
| 254 | |
---|
| 255 | if (!eop || !p_ring_in.cmd_r) |
---|
| 256 | { |
---|
| 257 | cmd_fifo_get = p_ring_in.cmd_r; |
---|
| 258 | r_ring_cmd_fsm = SENDING; |
---|
| 259 | } |
---|
| 260 | |
---|
| 261 | } |
---|
| 262 | |
---|
| 263 | } |
---|
| 264 | else if ( !p_ring_in.cmd_grant) |
---|
| 265 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 266 | break; |
---|
| 267 | |
---|
| 268 | case BDC_FIRST: |
---|
| 269 | |
---|
| 270 | #ifdef HI_DEBUG |
---|
| 271 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
| 272 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
---|
| 273 | << " - fifo ROK : " << m_cmd_fifo.rok() |
---|
| 274 | << " - in grant : " << p_ring_in.cmd_grant |
---|
| 275 | << " - preempt : " << r_preempt |
---|
| 276 | << " - in wok : " << p_ring_in.cmd_r |
---|
| 277 | << " - cpt_tgt : " << r_cpt_tgt.read() |
---|
| 278 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
---|
| 279 | << std::endl; |
---|
| 280 | |
---|
| 281 | #endif |
---|
[358] | 282 | r_preempt = tga; |
---|
[326] | 283 | |
---|
| 284 | if (p_ring_in.cmd_r) |
---|
| 285 | { |
---|
| 286 | if (r_cpt_tgt.read() == 0) |
---|
| 287 | { |
---|
| 288 | cmd_fifo_get = true; |
---|
| 289 | } |
---|
| 290 | r_ring_cmd_fsm = BDC_SECOND; |
---|
| 291 | } |
---|
| 292 | break; |
---|
| 293 | |
---|
| 294 | case BDC_SECOND: |
---|
| 295 | #ifdef HI_DEBUG |
---|
| 296 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
| 297 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
---|
| 298 | << " - fifo ROK : " << m_cmd_fifo.rok() |
---|
| 299 | << " - in grant : " << p_ring_in.cmd_grant |
---|
| 300 | << " - preempt : " << r_preempt |
---|
| 301 | << " - in wok : " << p_ring_in.cmd_r |
---|
| 302 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
---|
| 303 | << std::endl; |
---|
| 304 | |
---|
| 305 | #endif |
---|
| 306 | |
---|
| 307 | if(m_cmd_fifo.rok() && p_ring_in.cmd_r) |
---|
| 308 | { |
---|
| 309 | if(r_cpt_tgt.read() == m_nb_target - 1) |
---|
| 310 | { |
---|
| 311 | cmd_fifo_get = true; |
---|
| 312 | |
---|
| 313 | if ( !r_preempt && p_ring_in.cmd_grant ) |
---|
| 314 | { |
---|
| 315 | r_ring_cmd_fsm = OWNER; |
---|
| 316 | } |
---|
| 317 | else //r_preempt || !p_ring_in.cmd_grant |
---|
| 318 | { |
---|
| 319 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 320 | } |
---|
| 321 | } |
---|
| 322 | else |
---|
| 323 | { |
---|
| 324 | r_cpt_tgt = r_cpt_tgt + 1; |
---|
| 325 | r_ring_cmd_fsm = BDC_FIRST; |
---|
| 326 | } |
---|
| 327 | |
---|
| 328 | } |
---|
| 329 | break; |
---|
| 330 | |
---|
| 331 | case SENDING: |
---|
| 332 | #ifdef HI_DEBUG |
---|
| 333 | if(m_cmd_fifo.rok()) |
---|
| 334 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
| 335 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
---|
| 336 | << " - fifo ROK : " << m_cmd_fifo.rok() |
---|
| 337 | << " - in grant : " << p_ring_in.cmd_grant |
---|
| 338 | << " - in wok : " << p_ring_in.cmd_r |
---|
| 339 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
---|
| 340 | << std::endl; |
---|
| 341 | #endif |
---|
| 342 | |
---|
| 343 | |
---|
| 344 | if(m_cmd_fifo.rok() && p_ring_in.cmd_r ) |
---|
| 345 | { |
---|
| 346 | cmd_fifo_get = true; |
---|
| 347 | bool eop = ((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1; |
---|
| 348 | if (eop) |
---|
| 349 | { |
---|
| 350 | if (!r_preempt && p_ring_in.cmd_grant ) |
---|
| 351 | r_ring_cmd_fsm = OWNER; |
---|
| 352 | else |
---|
| 353 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 354 | } |
---|
| 355 | } |
---|
| 356 | break; |
---|
| 357 | |
---|
| 358 | } // end switch ring cmd fsm |
---|
| 359 | |
---|
| 360 | /////////// RING RSP FSM //////////////////////// |
---|
| 361 | |
---|
| 362 | switch( r_ring_rsp_fsm ) |
---|
| 363 | { |
---|
| 364 | case RSP_IDLE: |
---|
| 365 | |
---|
| 366 | { |
---|
| 367 | uint32_t rsrcid = (uint32_t) ((sc_dt::sc_uint<vci_param::S>) ((p_ring_in.rsp_data >> (ring_rsp_data_size-m_x_width-m_y_width - 1)) << (vci_param::S-m_x_width-m_y_width))); |
---|
| 368 | bool islocal = !m_lt[rsrcid]; |
---|
| 369 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
---|
| 370 | |
---|
| 371 | |
---|
| 372 | |
---|
| 373 | if (p_ring_in.rsp_w) |
---|
| 374 | { |
---|
| 375 | #ifdef HI_DEBUG |
---|
| 376 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
| 377 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
---|
| 378 | << " - in preempt : " << p_ring_in.rsp_preempt |
---|
| 379 | << " - in rok : " << p_ring_in.rsp_w |
---|
| 380 | << " - in data : " << std::hex << p_ring_in.rsp_data |
---|
| 381 | << " - rsrcid : " << rsrcid |
---|
| 382 | << " - isloc : " << islocal |
---|
| 383 | << " - in wok : " << p_ring_in.rsp_r |
---|
| 384 | << " - fifo wok : " << m_rsp_fifo.wok() |
---|
| 385 | << " - reop : " << reop |
---|
| 386 | << std::endl; |
---|
| 387 | #endif |
---|
| 388 | if(islocal) |
---|
| 389 | { |
---|
| 390 | rsp_fifo_put = m_rsp_fifo.wok(); |
---|
| 391 | rsp_fifo_data = p_ring_in.rsp_data; |
---|
| 392 | |
---|
| 393 | if (reop && m_rsp_fifo.wok()) |
---|
| 394 | r_ring_rsp_fsm = RSP_IDLE; |
---|
| 395 | else |
---|
| 396 | r_ring_rsp_fsm = ALLOC; |
---|
| 397 | } |
---|
| 398 | |
---|
| 399 | else // !islocal |
---|
| 400 | { |
---|
| 401 | |
---|
| 402 | if (reop && p_ring_in.rsp_r) |
---|
| 403 | r_ring_rsp_fsm = RSP_IDLE; |
---|
| 404 | else |
---|
| 405 | r_ring_rsp_fsm = NALLOC; |
---|
| 406 | } |
---|
| 407 | } |
---|
| 408 | else // !p_ring_in.rsp_w |
---|
| 409 | r_ring_rsp_fsm = RSP_IDLE; |
---|
| 410 | } |
---|
| 411 | break; |
---|
| 412 | |
---|
| 413 | case ALLOC: |
---|
| 414 | { |
---|
| 415 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
---|
| 416 | #ifdef HI_DEBUG |
---|
| 417 | if(p_ring_in.rsp_w || p_ring_in.rsp_preempt) |
---|
| 418 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
| 419 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
---|
| 420 | << " - in preempt : " << p_ring_in.rsp_preempt |
---|
| 421 | << " - in rok : " << p_ring_in.rsp_w |
---|
| 422 | << " - in wok : " << p_ring_in.rsp_r |
---|
| 423 | << " - in data : " << std::hex << p_ring_in.rsp_data |
---|
| 424 | << " - fifo wok : " << m_rsp_fifo.wok() |
---|
| 425 | << " - reop : " << reop |
---|
| 426 | << std::endl; |
---|
| 427 | #endif |
---|
| 428 | |
---|
| 429 | |
---|
| 430 | if(p_ring_in.rsp_preempt) break; |
---|
| 431 | |
---|
| 432 | if (p_ring_in.rsp_w && m_rsp_fifo.wok() && reop) |
---|
| 433 | { |
---|
| 434 | |
---|
| 435 | rsp_fifo_put = true; |
---|
| 436 | rsp_fifo_data = p_ring_in.rsp_data; |
---|
| 437 | |
---|
| 438 | if(p_ring_in.rsp_palloc) |
---|
| 439 | r_ring_rsp_fsm = NALLOC; |
---|
| 440 | else |
---|
| 441 | r_ring_rsp_fsm = RSP_IDLE; |
---|
| 442 | } |
---|
| 443 | else // !p_ring_in.rsp_w || !m_rsp_fifo.wok() || !reop |
---|
| 444 | { |
---|
| 445 | |
---|
| 446 | rsp_fifo_put = p_ring_in.rsp_w && m_rsp_fifo.wok(); |
---|
| 447 | rsp_fifo_data = p_ring_in.rsp_data; |
---|
| 448 | r_ring_rsp_fsm = ALLOC; |
---|
| 449 | } |
---|
| 450 | } |
---|
| 451 | break; |
---|
| 452 | |
---|
| 453 | case NALLOC: |
---|
| 454 | { |
---|
| 455 | |
---|
| 456 | #ifdef HI_DEBUG |
---|
| 457 | if(p_ring_in.rsp_w) |
---|
| 458 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
---|
| 459 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
---|
| 460 | << " - in rok : " << p_ring_in.rsp_w |
---|
| 461 | << " - fifo wok : " << m_rsp_fifo.wok() |
---|
| 462 | << " - in wok : " << p_ring_in.rsp_r |
---|
| 463 | << " - in data : " << std::hex << p_ring_in.rsp_data |
---|
| 464 | << std::endl; |
---|
| 465 | #endif |
---|
| 466 | |
---|
| 467 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
---|
| 468 | |
---|
| 469 | |
---|
| 470 | if (p_ring_in.rsp_w && reop && p_ring_in.rsp_r) |
---|
| 471 | { |
---|
| 472 | r_ring_rsp_fsm = RSP_IDLE; |
---|
| 473 | } |
---|
| 474 | else |
---|
| 475 | { |
---|
| 476 | r_ring_rsp_fsm = NALLOC; |
---|
| 477 | } |
---|
| 478 | } |
---|
| 479 | break; |
---|
| 480 | |
---|
| 481 | } // end switch rsp fsm |
---|
| 482 | |
---|
| 483 | |
---|
| 484 | //////////////////////// |
---|
| 485 | // fifos update // |
---|
| 486 | //////////////////////// |
---|
| 487 | |
---|
| 488 | //-- keep trace on ring traffic |
---|
| 489 | init_cmd.cmdval = cmd_fifo_get; |
---|
| 490 | init_cmd.flit = m_cmd_fifo.read(); |
---|
| 491 | init_cmd.state = ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm]; |
---|
| 492 | |
---|
| 493 | //init_cmd_val = cmd_fifo_get; |
---|
| 494 | init_rsp_val = rsp_fifo_put; |
---|
| 495 | // local cmd fifo update |
---|
| 496 | if ( cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.put_and_get(cmd_fifo_data); |
---|
| 497 | else if ( cmd_fifo_put && !cmd_fifo_get ) m_cmd_fifo.simple_put(cmd_fifo_data); |
---|
| 498 | else if ( !cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.simple_get(); |
---|
| 499 | |
---|
| 500 | // local rsp fifo update |
---|
| 501 | if ( rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.put_and_get(rsp_fifo_data); |
---|
| 502 | else if ( rsp_fifo_put && !rsp_fifo_get ) m_rsp_fifo.simple_put(rsp_fifo_data); |
---|
| 503 | else if ( !rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.simple_get(); |
---|
| 504 | |
---|
| 505 | } // end Transition() |
---|
| 506 | |
---|
| 507 | /////////////////////////////////////////////////////////////////// |
---|
| 508 | void genMoore(cmd_in_t &p_gate_cmd_in, rsp_out_t &p_gate_rsp_out) |
---|
| 509 | /////////////////////////////////////////////////////////////////// |
---|
| 510 | { |
---|
| 511 | p_gate_rsp_out.write = m_rsp_fifo.rok(); |
---|
| 512 | p_gate_rsp_out.data = (sc_dt::sc_uint<ring_rsp_data_size>) m_rsp_fifo.read(); |
---|
| 513 | |
---|
| 514 | p_gate_cmd_in.read= m_cmd_fifo.wok(); |
---|
| 515 | |
---|
| 516 | } // end genMoore |
---|
| 517 | |
---|
| 518 | ///////////////////////////////////////////////////////////////////////////////////////////////// |
---|
| 519 | void update_ring_signals(ring_signal_t p_ring_in, ring_signal_t &p_ring_out, bool tga, bool &iga) |
---|
| 520 | ///////////////////////////////////////////////////////////////////////////////////////////////// |
---|
| 521 | // palloc may have 2 values : |
---|
| 522 | // palloc = 2 : means Target Gate still allocated |
---|
| 523 | // global state for targets : TG TL0 TL1 TL2 ... TLn |
---|
| 524 | // A N N P2 N |
---|
| 525 | // A N N N N |
---|
| 526 | // palloc = 1 : means Target Gate free (not allocated) |
---|
| 527 | // global state for targets : TG TL0 TL1 TL2 ... TLn |
---|
| 528 | // A N N P2 N |
---|
| 529 | // N N N P1 N |
---|
| 530 | // I I I I I |
---|
| 531 | // TLi not allocated, in case of preempt and last flit, needs to test value of palloc |
---|
| 532 | // if palloc=1 => next state : IDLE (TG not allocated) |
---|
| 533 | // else (palloc2=2) => next state : NALLOC (TG still Allocated) |
---|
| 534 | { |
---|
| 535 | switch( r_ring_cmd_fsm ) |
---|
| 536 | { |
---|
| 537 | case CMD_IDLE: |
---|
| 538 | { |
---|
| 539 | bool brdcst = (m_cmd_fifo.read() & 0x1 == 0x1); |
---|
| 540 | |
---|
| 541 | p_ring_out.cmd_grant = !m_cmd_fifo.rok() && p_ring_in.cmd_grant; |
---|
| 542 | |
---|
| 543 | if (m_cmd_fifo.rok() && tga && !brdcst) |
---|
| 544 | { |
---|
| 545 | p_ring_out.cmd_preempt = 1; |
---|
| 546 | p_ring_out.cmd_palloc = 1; |
---|
| 547 | p_ring_out.cmd_header = 1; |
---|
| 548 | p_ring_out.cmd_w = 1; |
---|
| 549 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
| 550 | } |
---|
| 551 | else |
---|
| 552 | { |
---|
| 553 | p_ring_out.cmd_preempt = 0; |
---|
| 554 | p_ring_out.cmd_palloc = 0; |
---|
| 555 | p_ring_out.cmd_header = 0; |
---|
| 556 | p_ring_out.cmd_w = p_ring_in.cmd_w; |
---|
| 557 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
---|
| 558 | } |
---|
| 559 | |
---|
| 560 | } |
---|
| 561 | break; |
---|
| 562 | |
---|
| 563 | case OWNER: |
---|
| 564 | { |
---|
| 565 | bool eop = ((int) ((m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
| 566 | bool brdcst = (m_cmd_fifo.read() & 0x1 == 0x1); |
---|
| 567 | |
---|
| 568 | p_ring_out.cmd_grant = (!m_cmd_fifo.rok() || (eop && p_ring_in.cmd_r)) ; |
---|
| 569 | |
---|
| 570 | p_ring_out.cmd_preempt = 0; |
---|
| 571 | p_ring_out.cmd_header = 0; |
---|
| 572 | p_ring_out.cmd_palloc = 0; |
---|
| 573 | p_ring_out.cmd_w = m_cmd_fifo.rok() && !brdcst; |
---|
| 574 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
| 575 | } |
---|
| 576 | break; |
---|
| 577 | |
---|
| 578 | case BDC_FIRST: |
---|
[358] | 579 | if(tga) |
---|
[326] | 580 | { |
---|
| 581 | p_ring_out.cmd_header = 1; |
---|
[358] | 582 | p_ring_out.cmd_palloc = 1; //1+(tga ? 1:0); |
---|
[326] | 583 | p_ring_out.cmd_preempt = 1; |
---|
| 584 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
---|
| 585 | } |
---|
| 586 | else |
---|
| 587 | { |
---|
| 588 | p_ring_out.cmd_header = 0; |
---|
| 589 | p_ring_out.cmd_palloc = 0; |
---|
| 590 | p_ring_out.cmd_preempt = 0; |
---|
| 591 | p_ring_out.cmd_grant = false; |
---|
| 592 | } |
---|
| 593 | |
---|
| 594 | p_ring_out.cmd_w = true; |
---|
| 595 | p_ring_out.cmd_data = r_brdcst_save | ((((uint64_t) r_cpt_tgt.read()) & 0xF) << 0x1); |
---|
| 596 | break; |
---|
| 597 | |
---|
| 598 | case BDC_SECOND: |
---|
| 599 | |
---|
| 600 | if (r_preempt) |
---|
| 601 | { |
---|
| 602 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
---|
| 603 | p_ring_out.cmd_palloc = 1+(tga ? 1:0); |
---|
| 604 | |
---|
| 605 | p_ring_out.cmd_preempt = m_cmd_fifo.rok(); //&& tga; |
---|
| 606 | p_ring_out.cmd_header = 0; |
---|
| 607 | |
---|
| 608 | if ( m_cmd_fifo.rok() ) |
---|
| 609 | { |
---|
| 610 | p_ring_out.cmd_w = 1; //m_cmd_fifo.rok(); |
---|
| 611 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
| 612 | } |
---|
| 613 | else |
---|
| 614 | { |
---|
| 615 | // if init local has finished, tga = 0 |
---|
| 616 | // init gate remains the only initiator, then w = 0 |
---|
| 617 | p_ring_out.cmd_w = p_ring_in.cmd_w && tga; |
---|
| 618 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
---|
| 619 | } |
---|
| 620 | } |
---|
| 621 | else |
---|
| 622 | { |
---|
| 623 | // si on est dans cet etat, c'est qu'on n'utilise pas le cmd_preempt mais le gnt. |
---|
| 624 | p_ring_out.cmd_preempt= 0; |
---|
| 625 | p_ring_out.cmd_header = 0; |
---|
| 626 | p_ring_out.cmd_palloc = 0; |
---|
| 627 | p_ring_out.cmd_w = m_cmd_fifo.rok(); |
---|
| 628 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
| 629 | p_ring_out.cmd_grant = m_cmd_fifo.rok() && p_ring_in.cmd_r && (r_cpt_tgt.read() == m_nb_target - 1); |
---|
| 630 | } |
---|
| 631 | break; |
---|
| 632 | |
---|
| 633 | case SENDING: |
---|
| 634 | { |
---|
| 635 | |
---|
| 636 | if (r_preempt) |
---|
| 637 | { |
---|
| 638 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
---|
| 639 | p_ring_out.cmd_palloc = 1+(tga ? 1:0); |
---|
| 640 | |
---|
| 641 | p_ring_out.cmd_preempt = m_cmd_fifo.rok(); //&& tga; |
---|
| 642 | p_ring_out.cmd_header = 0; |
---|
| 643 | |
---|
| 644 | if ( m_cmd_fifo.rok() ) |
---|
| 645 | { |
---|
| 646 | p_ring_out.cmd_w = 1; //m_cmd_fifo.rok(); |
---|
| 647 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
| 648 | } |
---|
| 649 | else |
---|
| 650 | { |
---|
| 651 | // if init local has finished, tga = 0 |
---|
| 652 | // init gate remains the only initiator, then w = 0 |
---|
| 653 | p_ring_out.cmd_w = p_ring_in.cmd_w && tga; |
---|
| 654 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
---|
| 655 | } |
---|
| 656 | } |
---|
| 657 | else |
---|
| 658 | { |
---|
| 659 | bool eop = ((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1; |
---|
| 660 | // si on est dans cet etat, c'est qu'on n'utilise pas le cmd_preempt mais le gnt. |
---|
| 661 | p_ring_out.cmd_preempt= 0; |
---|
| 662 | p_ring_out.cmd_header = 0; |
---|
| 663 | p_ring_out.cmd_palloc = 0; |
---|
| 664 | p_ring_out.cmd_w = m_cmd_fifo.rok(); |
---|
| 665 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
---|
| 666 | p_ring_out.cmd_grant = m_cmd_fifo.rok() && p_ring_in.cmd_r && eop; |
---|
| 667 | } |
---|
| 668 | } |
---|
| 669 | break; |
---|
| 670 | |
---|
| 671 | } // end switch |
---|
| 672 | |
---|
| 673 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
---|
| 674 | |
---|
| 675 | p_ring_out.rsp_w = p_ring_in.rsp_w; |
---|
| 676 | p_ring_out.rsp_data = p_ring_in.rsp_data; |
---|
| 677 | |
---|
| 678 | p_ring_out.rsp_grant = p_ring_in.rsp_grant; |
---|
| 679 | |
---|
| 680 | p_ring_out.rsp_palloc = p_ring_in.rsp_palloc; |
---|
| 681 | p_ring_out.rsp_preempt = p_ring_in.rsp_preempt; |
---|
| 682 | p_ring_out.rsp_header = p_ring_in.rsp_header; |
---|
| 683 | |
---|
| 684 | |
---|
| 685 | switch( r_ring_rsp_fsm ) |
---|
| 686 | { |
---|
| 687 | case RSP_IDLE: |
---|
| 688 | { |
---|
| 689 | uint32_t rsrcid = (uint32_t) ((sc_dt::sc_uint<vci_param::S>) ((p_ring_in.rsp_data >> (ring_rsp_data_size-m_x_width-m_y_width - 1)) << (vci_param::S-m_x_width-m_y_width))); |
---|
| 690 | bool islocal = !m_lt[rsrcid]; |
---|
| 691 | |
---|
| 692 | iga = false; |
---|
| 693 | |
---|
| 694 | if(p_ring_in.rsp_w && islocal) |
---|
| 695 | p_ring_out.rsp_r = m_rsp_fifo.wok(); |
---|
| 696 | else |
---|
| 697 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
---|
| 698 | } |
---|
| 699 | break; |
---|
| 700 | |
---|
| 701 | case ALLOC: |
---|
| 702 | iga = true; |
---|
| 703 | |
---|
| 704 | if (!p_ring_in.rsp_preempt) |
---|
| 705 | p_ring_out.rsp_r = m_rsp_fifo.wok(); |
---|
| 706 | else |
---|
| 707 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
---|
| 708 | break; |
---|
| 709 | |
---|
| 710 | case NALLOC: |
---|
| 711 | iga = false; |
---|
| 712 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
---|
| 713 | break; |
---|
| 714 | } // end switch |
---|
| 715 | |
---|
| 716 | |
---|
| 717 | } // end update_ring_signals |
---|
| 718 | |
---|
| 719 | }; |
---|
| 720 | |
---|
| 721 | }} // end namespace |
---|
| 722 | |
---|
| 723 | #endif // DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
---|
| 724 | |
---|