| 1 | /* -*- c++ -*- |
|---|
| 2 | * File : vci_vdspin_initiator_wrapper.cpp |
|---|
| 3 | * Copyright (c) UPMC, Lip6 |
|---|
| 4 | * Authors : Alain Greiner |
|---|
| 5 | * |
|---|
| 6 | * SOCLIB_LGPL_HEADER_BEGIN |
|---|
| 7 | * |
|---|
| 8 | * This file is part of SoCLib, GNU LGPLv2.1. |
|---|
| 9 | * |
|---|
| 10 | * SoCLib is free software; you can redistribute it and/or modify it |
|---|
| 11 | * under the terms of the GNU Lesser General Public License as published |
|---|
| 12 | * by the Free Software Foundation; version 2.1 of the License. |
|---|
| 13 | * |
|---|
| 14 | * SoCLib is distributed in the hope that it will be useful, but |
|---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 17 | * Lesser General Public License for more details. |
|---|
| 18 | * |
|---|
| 19 | * You should have received a copy of the GNU Lesser General Public |
|---|
| 20 | * License along with SoCLib; if not, write to the Free Software |
|---|
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
|---|
| 22 | * 02110-1301 USA |
|---|
| 23 | * |
|---|
| 24 | * SOCLIB_LGPL_HEADER_END |
|---|
| 25 | */ |
|---|
| 26 | |
|---|
| 27 | #include "../include/vci_vdspin_initiator_wrapper.h" |
|---|
| 28 | |
|---|
| 29 | namespace soclib { namespace caba { |
|---|
| 30 | |
|---|
| 31 | #define tmpl(x) template<typename vci_param, int dspin_cmd_width, int dspin_rsp_width> x VciVdspinInitiatorWrapper<vci_param, dspin_cmd_width, dspin_rsp_width> |
|---|
| 32 | |
|---|
| 33 | //////////////////////////////////////////////////////////://////////////////////////////// |
|---|
| 34 | tmpl(/**/)::VciVdspinInitiatorWrapper(sc_module_name name, |
|---|
| 35 | size_t cmd_fifo_depth, |
|---|
| 36 | size_t rsp_fifo_depth) |
|---|
| 37 | : soclib::caba::BaseModule(name), |
|---|
| 38 | p_clk("p_clk"), |
|---|
| 39 | p_resetn("p_resetn"), |
|---|
| 40 | p_dspin_out("p_dspin_out"), |
|---|
| 41 | p_dspin_in("p_dspin_in"), |
|---|
| 42 | p_vci("p_vci"), |
|---|
| 43 | r_cmd_fsm("r_cmd_fsm"), |
|---|
| 44 | r_rsp_fsm("r_rsp_fsm"), |
|---|
| 45 | r_fifo_cmd("r_fifo_cmd", cmd_fifo_depth), |
|---|
| 46 | r_fifo_rsp("r_fifo_rsp", rsp_fifo_depth) |
|---|
| 47 | { |
|---|
| 48 | SC_METHOD (transition); |
|---|
| 49 | dont_initialize(); |
|---|
| 50 | sensitive << p_clk.pos(); |
|---|
| 51 | SC_METHOD (genMoore); |
|---|
| 52 | dont_initialize(); |
|---|
| 53 | sensitive << p_clk.neg(); |
|---|
| 54 | |
|---|
| 55 | assert( (dspin_cmd_width == 40) && "The DSPIN CMD flit width must have 40 bits"); |
|---|
| 56 | assert( (dspin_rsp_width == 33) && "The DSPIN RSP flit width must have 33 bits"); |
|---|
| 57 | assert( (vci_param::N <= 40) && "The VCI ADDRESS field cannot have more than 40 bits"); |
|---|
| 58 | assert( (vci_param::B == 4) && "The VCI DATA filds must have 32 bits"); |
|---|
| 59 | assert( (vci_param::K == 8) && "The VCI PLEN field cannot have more than 8 bits"); |
|---|
| 60 | assert( (vci_param::S <= 14) && "The VCI SRCID field cannot have more than 8 bits"); |
|---|
| 61 | assert( (vci_param::T <= 8) && "The VCI TRDID field cannot have more than 8 bits"); |
|---|
| 62 | assert( (vci_param::E == 2) && "The VCI RERROR field cannot have more than 2 bits"); |
|---|
| 63 | |
|---|
| 64 | } // end constructor |
|---|
| 65 | |
|---|
| 66 | ///////////////////////// |
|---|
| 67 | tmpl(void)::transition() |
|---|
| 68 | { |
|---|
| 69 | sc_uint<dspin_cmd_width> cmd_fifo_data; |
|---|
| 70 | bool cmd_fifo_write; |
|---|
| 71 | bool cmd_fifo_read; |
|---|
| 72 | |
|---|
| 73 | sc_uint<dspin_rsp_width> rsp_fifo_data; |
|---|
| 74 | bool rsp_fifo_write; |
|---|
| 75 | bool rsp_fifo_read; |
|---|
| 76 | |
|---|
| 77 | if (p_resetn == false) |
|---|
| 78 | { |
|---|
| 79 | r_fifo_cmd.init(); |
|---|
| 80 | r_fifo_rsp.init(); |
|---|
| 81 | r_cmd_fsm = CMD_IDLE; |
|---|
| 82 | r_rsp_fsm = RSP_IDLE; |
|---|
| 83 | return; |
|---|
| 84 | } // end reset |
|---|
| 85 | |
|---|
| 86 | ///////////////////////////////////////////////////////////// |
|---|
| 87 | // VCI command packet to DSPIN command packet |
|---|
| 88 | // The VCI packet is analysed, translated, |
|---|
| 89 | // and the DSPIN packet is stored in the fifo_cmd |
|---|
| 90 | ///////////////////////////////////////////////////////////// |
|---|
| 91 | // - A N flits VCI write command packet is translated |
|---|
| 92 | // to a N+2 flits DSPIN command. |
|---|
| 93 | // - A single flit VCI read command packet is translated |
|---|
| 94 | // to a 2 flits DSPIN command. |
|---|
| 95 | // - A single flit VCI broadcast packet is translated to |
|---|
| 96 | // a 2 flits DSPIN command. |
|---|
| 97 | // A DSPIN flit is written in the fifo_cmd in all states |
|---|
| 98 | // but a VCI flit is consumed only in the CMD_READ, |
|---|
| 99 | // CMD_BROACAST, and CMD_WDATA states. |
|---|
| 100 | ////////////////////////////////////////////////////////////// |
|---|
| 101 | |
|---|
| 102 | // cmd_fifo_read |
|---|
| 103 | cmd_fifo_read = p_dspin_out.read.read(); |
|---|
| 104 | |
|---|
| 105 | // r_cmd_fsm, cmd_fifo_write and cmd_fifo_data |
|---|
| 106 | cmd_fifo_write = false; // default value |
|---|
| 107 | |
|---|
| 108 | switch(r_cmd_fsm) { |
|---|
| 109 | case CMD_IDLE: // write first DSPIN flit into fifo_cmd |
|---|
| 110 | { |
|---|
| 111 | if( p_vci.cmdval && r_fifo_cmd.wok() ) |
|---|
| 112 | { |
|---|
| 113 | cmd_fifo_write = true; |
|---|
| 114 | sc_uint<dspin_cmd_width> address = (sc_uint<dspin_cmd_width>)p_vci.address.read(); |
|---|
| 115 | sc_uint<dspin_cmd_width> srcid = (sc_uint<dspin_cmd_width>)p_vci.srcid.read(); |
|---|
| 116 | sc_uint<dspin_cmd_width> trdid = (sc_uint<dspin_cmd_width>)p_vci.trdid.read(); |
|---|
| 117 | sc_uint<dspin_cmd_width> cmd = (sc_uint<dspin_cmd_width>)p_vci.cmd.read(); |
|---|
| 118 | |
|---|
| 119 | bool is_broadcast = ( (address & 0x3) != 0); |
|---|
| 120 | bool is_read = ((cmd == vci_param::CMD_READ) || (cmd == vci_param::CMD_LOCKED_READ)); |
|---|
| 121 | |
|---|
| 122 | if ( vci_param::N == 40 ) address = address >> 1; |
|---|
| 123 | else address = address << (39 - vci_param::N); |
|---|
| 124 | |
|---|
| 125 | if ( is_broadcast ) // VCI broacast command |
|---|
| 126 | { |
|---|
| 127 | r_cmd_fsm = CMD_BROADCAST; |
|---|
| 128 | cmd_fifo_data = (address & 0x7FFFF80000) | |
|---|
| 129 | ((srcid << 5) & 0x000007FFE0) | |
|---|
| 130 | ((trdid << 1) & 0x000000001E) | |
|---|
| 131 | 0x0000000001; |
|---|
| 132 | } |
|---|
| 133 | else if (is_read ) // VCI READ command |
|---|
| 134 | { |
|---|
| 135 | r_cmd_fsm = CMD_READ; |
|---|
| 136 | cmd_fifo_data = address & 0x7FFFFFFFFE; |
|---|
| 137 | } |
|---|
| 138 | else // VCI WRITE command |
|---|
| 139 | { |
|---|
| 140 | r_cmd_fsm = CMD_WRITE; |
|---|
| 141 | cmd_fifo_data = address & 0x7FFFFFFFFE; |
|---|
| 142 | } |
|---|
| 143 | } |
|---|
| 144 | break; |
|---|
| 145 | } |
|---|
| 146 | case CMD_BROADCAST: // write second DSPIN flit in case of broadcast |
|---|
| 147 | { |
|---|
| 148 | if( p_vci.cmdval && r_fifo_cmd.wok() ) |
|---|
| 149 | { |
|---|
| 150 | cmd_fifo_write = true; |
|---|
| 151 | sc_uint<dspin_cmd_width> data = (sc_uint<dspin_cmd_width>)p_vci.wdata.read(); |
|---|
| 152 | sc_uint<dspin_cmd_width> be = (sc_uint<dspin_cmd_width>)p_vci.be.read(); |
|---|
| 153 | cmd_fifo_data = (data & 0x00FFFFFFFF) | |
|---|
| 154 | ((be << 32) & 0x0300000000) | |
|---|
| 155 | 0x8000000000; |
|---|
| 156 | r_cmd_fsm = CMD_IDLE; |
|---|
| 157 | } |
|---|
| 158 | break; |
|---|
| 159 | } |
|---|
| 160 | case CMD_READ: // write second DSPIN flit in case of read/write |
|---|
| 161 | case CMD_WRITE: |
|---|
| 162 | { |
|---|
| 163 | if( p_vci.cmdval && r_fifo_cmd.wok() ) |
|---|
| 164 | { |
|---|
| 165 | cmd_fifo_write = true; |
|---|
| 166 | sc_uint<dspin_cmd_width> srcid = (sc_uint<dspin_cmd_width>)p_vci.srcid.read(); |
|---|
| 167 | sc_uint<dspin_cmd_width> trdid = (sc_uint<dspin_cmd_width>)p_vci.trdid.read(); |
|---|
| 168 | sc_uint<dspin_cmd_width> cmd = (sc_uint<dspin_cmd_width>)p_vci.cmd.read(); |
|---|
| 169 | sc_uint<dspin_cmd_width> plen = (sc_uint<dspin_cmd_width>)p_vci.plen.read(); |
|---|
| 170 | sc_uint<dspin_cmd_width> be = (sc_uint<dspin_cmd_width>)p_vci.be.read(); |
|---|
| 171 | cmd_fifo_data = ((be << 1 ) & 0x000000001E) | |
|---|
| 172 | ((trdid << 5 ) & 0x0000001FE0) | |
|---|
| 173 | ((plen << 13) & 0x00001FE000) | |
|---|
| 174 | ((cmd << 23) & 0x0001800000) | |
|---|
| 175 | ((srcid << 25) & 0x7FFE000000) ; |
|---|
| 176 | if ( p_vci.contig.read() ) cmd_fifo_data = cmd_fifo_data | 0x0000400000 ; |
|---|
| 177 | if ( p_vci.cons.read() ) cmd_fifo_data = cmd_fifo_data | 0x0000200000 ; |
|---|
| 178 | |
|---|
| 179 | if( r_cmd_fsm == CMD_READ ) // read command |
|---|
| 180 | { |
|---|
| 181 | r_cmd_fsm = CMD_IDLE; |
|---|
| 182 | cmd_fifo_data = cmd_fifo_data | 0x8000000000 ; |
|---|
| 183 | } |
|---|
| 184 | else // write command |
|---|
| 185 | { |
|---|
| 186 | r_cmd_fsm = CMD_WDATA; |
|---|
| 187 | } |
|---|
| 188 | } |
|---|
| 189 | break; |
|---|
| 190 | } |
|---|
| 191 | case CMD_WDATA: |
|---|
| 192 | { |
|---|
| 193 | if( p_vci.cmdval && r_fifo_cmd.wok() ) |
|---|
| 194 | { |
|---|
| 195 | cmd_fifo_write = true; |
|---|
| 196 | sc_uint<dspin_cmd_width> data = (sc_uint<dspin_cmd_width>)p_vci.wdata.read(); |
|---|
| 197 | sc_uint<dspin_cmd_width> be = (sc_uint<dspin_cmd_width>)p_vci.be.read(); |
|---|
| 198 | cmd_fifo_data = (data & 0x00FFFFFFFF) | |
|---|
| 199 | ((be << 32) & 0x0F00000000) ; |
|---|
| 200 | |
|---|
| 201 | if ( p_vci.eop.read() ) |
|---|
| 202 | { |
|---|
| 203 | cmd_fifo_data = cmd_fifo_data | 0x8000000000; |
|---|
| 204 | r_cmd_fsm = CMD_IDLE; |
|---|
| 205 | } |
|---|
| 206 | } |
|---|
| 207 | break; |
|---|
| 208 | } |
|---|
| 209 | } // end switch r_cmd_fsm |
|---|
| 210 | |
|---|
| 211 | // fifo_cmd |
|---|
| 212 | if((cmd_fifo_write == true) && (cmd_fifo_read == false)) { r_fifo_cmd.simple_put(cmd_fifo_data); } |
|---|
| 213 | if((cmd_fifo_write == true) && (cmd_fifo_read == true)) { r_fifo_cmd.put_and_get(cmd_fifo_data); } |
|---|
| 214 | if((cmd_fifo_write == false) && (cmd_fifo_read == true)) { r_fifo_cmd.simple_get(); } |
|---|
| 215 | |
|---|
| 216 | ////////////////////////////////////////////////////////////// |
|---|
| 217 | // DSPIN response packet to VCI response packet |
|---|
| 218 | // The DSPIN packet is stored in the fifo_rsp |
|---|
| 219 | // The FIFO output is analysed and translated to a VCI packet |
|---|
| 220 | ////////////////////////////////////////////////////////////// |
|---|
| 221 | // - A N+1 flits DSPIN read response packet is translated |
|---|
| 222 | // to a N flits VCI response. |
|---|
| 223 | // - A single flit DSPIN write response packet is translated |
|---|
| 224 | // to a single flit VCI response. |
|---|
| 225 | // A valid DSPIN flit in the fifo_rsp is always consumed |
|---|
| 226 | // in the CMD_IDLE state, but no VCI flit is transmitted. |
|---|
| 227 | // The VCI flits are sent in the RSP_READ & RSP_WRITE states. |
|---|
| 228 | ////////////////////////////////////////////////////////////// |
|---|
| 229 | |
|---|
| 230 | // rsp_fifo_write, rsp_fifo_data |
|---|
| 231 | rsp_fifo_write = p_dspin_in.write.read(); |
|---|
| 232 | rsp_fifo_data = p_dspin_in.data.read(); |
|---|
| 233 | |
|---|
| 234 | // r_rsp_fsm, rsp_fifo_read |
|---|
| 235 | rsp_fifo_read = false; // default value |
|---|
| 236 | |
|---|
| 237 | switch(r_rsp_fsm) { |
|---|
| 238 | case RSP_IDLE: |
|---|
| 239 | { |
|---|
| 240 | if( r_fifo_rsp.rok() ) |
|---|
| 241 | { |
|---|
| 242 | rsp_fifo_read = true; |
|---|
| 243 | r_rsp_buf = r_fifo_rsp.read(); |
|---|
| 244 | if ( (r_fifo_rsp.read() & 0x000020000) == 0 ) r_rsp_fsm = RSP_READ; |
|---|
| 245 | else r_rsp_fsm = RSP_WRITE; |
|---|
| 246 | } |
|---|
| 247 | break; |
|---|
| 248 | } |
|---|
| 249 | case RSP_READ: |
|---|
| 250 | { |
|---|
| 251 | if( r_fifo_rsp.rok() && p_vci.rspack.read() ) |
|---|
| 252 | { |
|---|
| 253 | rsp_fifo_read = true; |
|---|
| 254 | if ( (r_fifo_rsp.read() & 0x100000000) ) r_rsp_fsm = RSP_IDLE; |
|---|
| 255 | } |
|---|
| 256 | break; |
|---|
| 257 | } |
|---|
| 258 | case RSP_WRITE: |
|---|
| 259 | { |
|---|
| 260 | if ( p_vci.rspack.read() ) r_rsp_fsm = RSP_IDLE; |
|---|
| 261 | } |
|---|
| 262 | } // end switch r_rsp_fsm |
|---|
| 263 | |
|---|
| 264 | // fifo_rsp |
|---|
| 265 | if((rsp_fifo_write == true) && (rsp_fifo_read == false)) { r_fifo_rsp.simple_put(rsp_fifo_data); } |
|---|
| 266 | if((rsp_fifo_write == true) && (rsp_fifo_read == true)) { r_fifo_rsp.put_and_get(rsp_fifo_data); } |
|---|
| 267 | if((rsp_fifo_write == false) && (rsp_fifo_read == true)) { r_fifo_rsp.simple_get(); } |
|---|
| 268 | |
|---|
| 269 | }; // end transition |
|---|
| 270 | |
|---|
| 271 | ////////////////////// |
|---|
| 272 | tmpl(void)::genMoore() |
|---|
| 273 | { |
|---|
| 274 | // VCI CMD interface |
|---|
| 275 | if ( ( r_cmd_fsm.read() == CMD_IDLE ) || ( r_cmd_fsm.read() == CMD_WRITE ) ) |
|---|
| 276 | { |
|---|
| 277 | p_vci.cmdack = false; |
|---|
| 278 | } |
|---|
| 279 | else |
|---|
| 280 | { |
|---|
| 281 | p_vci.cmdack = r_fifo_cmd.wok(); |
|---|
| 282 | } |
|---|
| 283 | |
|---|
| 284 | // VCI RSP interface |
|---|
| 285 | if ( r_rsp_fsm.read() == RSP_IDLE ) |
|---|
| 286 | { |
|---|
| 287 | p_vci.rspval = false; |
|---|
| 288 | } |
|---|
| 289 | else if ( r_rsp_fsm.read() == RSP_WRITE ) |
|---|
| 290 | { |
|---|
| 291 | p_vci.rspval = true; |
|---|
| 292 | p_vci.rdata = 0; |
|---|
| 293 | p_vci.rsrcid = (sc_uint<vci_param::S>)((r_rsp_buf.read() & 0x0FFFC0000) >> 18); |
|---|
| 294 | p_vci.rtrdid = (sc_uint<vci_param::T>)((r_rsp_buf.read() & 0x00000FF00) >> 8); |
|---|
| 295 | p_vci.rpktid = 0; |
|---|
| 296 | p_vci.rerror = (sc_uint<vci_param::E>)((r_rsp_buf.read() & 0x000030000) >> 16); |
|---|
| 297 | p_vci.reop = true; |
|---|
| 298 | } |
|---|
| 299 | else if ( r_rsp_fsm.read() == RSP_READ ) |
|---|
| 300 | { |
|---|
| 301 | p_vci.rspval = r_fifo_rsp.rok(); |
|---|
| 302 | p_vci.rdata = (sc_uint<8*vci_param::B>)(r_fifo_rsp.read() & 0x0FFFFFFFF); |
|---|
| 303 | p_vci.rsrcid = (sc_uint<vci_param::S>)((r_rsp_buf.read() & 0x0FFFC0000) >> 18); |
|---|
| 304 | p_vci.rtrdid = (sc_uint<vci_param::T>)((r_rsp_buf.read() & 0x00000FF00) >> 8); |
|---|
| 305 | p_vci.rpktid = 0; |
|---|
| 306 | p_vci.rerror = (sc_uint<vci_param::E>)((r_rsp_buf.read() & 0x000030000) >> 16); |
|---|
| 307 | p_vci.reop = ((r_fifo_rsp.read() & 0x100000000) == 0x100000000); |
|---|
| 308 | } |
|---|
| 309 | |
|---|
| 310 | // DSPIN_OUT interface |
|---|
| 311 | p_dspin_out.write = r_fifo_cmd.rok(); |
|---|
| 312 | p_dspin_out.data = r_fifo_cmd.read(); |
|---|
| 313 | |
|---|
| 314 | // DSPIN_IN interface |
|---|
| 315 | p_dspin_in.read = r_fifo_rsp.wok(); |
|---|
| 316 | |
|---|
| 317 | }; // end genMoore |
|---|
| 318 | |
|---|
| 319 | ///////////////////////// |
|---|
| 320 | tmpl(void)::print_trace() |
|---|
| 321 | { |
|---|
| 322 | const char* cmd_str[] = { |
|---|
| 323 | "CMD_IDLE ", |
|---|
| 324 | "CMD_BROADCAST", |
|---|
| 325 | "CMD_READ ", |
|---|
| 326 | "CMD_WRITE ", |
|---|
| 327 | "CMD_WDATA ", |
|---|
| 328 | }; |
|---|
| 329 | const char* rsp_str[] = { |
|---|
| 330 | "RSP_IDLE ", |
|---|
| 331 | "RSP_READ ", |
|---|
| 332 | "RSP_WRITE ", |
|---|
| 333 | }; |
|---|
| 334 | |
|---|
| 335 | std::cout << name() << " : " << cmd_str[r_cmd_fsm.read()] |
|---|
| 336 | << " | " << rsp_str[r_rsp_fsm.read()] |
|---|
| 337 | << " | fifo_cmd = " << r_fifo_cmd.filled_status() |
|---|
| 338 | << " | fifo_rsp = " << r_fifo_rsp.filled_status() |
|---|
| 339 | << std::endl; |
|---|
| 340 | } |
|---|
| 341 | |
|---|
| 342 | }} // end namespace |
|---|
| 343 | |
|---|
| 344 | // Local Variables: |
|---|
| 345 | // tab-width: 4 |
|---|
| 346 | // c-basic-offset: 4 |
|---|
| 347 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
|---|
| 348 | // indent-tabs-mode: nil |
|---|
| 349 | // End: |
|---|
| 350 | |
|---|
| 351 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
|---|