| 1 |
48 |
alirezamon |
// synthesis translate_off
|
| 2 |
|
|
`timescale 1ns / 1ps
|
| 3 |
|
|
// synthesis translate_on
|
| 4 |
|
|
|
| 5 |
|
|
/**********************************************************************
|
| 6 |
|
|
** File: mesh_torus_noc.v
|
| 7 |
|
|
**
|
| 8 |
|
|
** Copyright (C) 2014-2017 Alireza Monemi
|
| 9 |
|
|
**
|
| 10 |
|
|
** This file is part of ProNoC
|
| 11 |
|
|
**
|
| 12 |
|
|
** ProNoC ( stands for Prototype Network-on-chip) is free software:
|
| 13 |
|
|
** you can redistribute it and/or modify it under the terms of the GNU
|
| 14 |
|
|
** Lesser General Public License as published by the Free Software Foundation,
|
| 15 |
|
|
** either version 2 of the License, or (at your option) any later version.
|
| 16 |
|
|
**
|
| 17 |
|
|
** ProNoC is distributed in the hope that it will be useful, but WITHOUT
|
| 18 |
|
|
** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
| 19 |
|
|
** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
|
| 20 |
|
|
** Public License for more details.
|
| 21 |
|
|
**
|
| 22 |
|
|
** You should have received a copy of the GNU Lesser General Public
|
| 23 |
|
|
** License along with ProNoC. If not, see .
|
| 24 |
|
|
**
|
| 25 |
|
|
**
|
| 26 |
|
|
** Description:
|
| 27 |
|
|
** the NoC top module. It generate one of the mesh, torus, ring, or line topologies by
|
| 28 |
|
|
** connecting routers
|
| 29 |
|
|
**
|
| 30 |
|
|
**************************************************************/
|
| 31 |
|
|
|
| 32 |
|
|
|
| 33 |
|
|
`define router_id(x,y) ((y * NX) + x)
|
| 34 |
|
|
`define endp_id(x,y,l) ((y * NX) + x) * NL + l
|
| 35 |
|
|
|
| 36 |
|
|
|
| 37 |
|
|
|
| 38 |
|
|
module mesh_torus_noc_top
|
| 39 |
|
|
import pronoc_pkg::*;
|
| 40 |
|
|
(
|
| 41 |
|
|
|
| 42 |
|
|
reset,
|
| 43 |
|
|
clk,
|
| 44 |
|
|
chan_in_all,
|
| 45 |
|
|
chan_out_all
|
| 46 |
|
|
);
|
| 47 |
|
|
|
| 48 |
|
|
|
| 49 |
|
|
input clk,reset;
|
| 50 |
|
|
//local ports
|
| 51 |
|
|
input smartflit_chanel_t chan_in_all [NE-1 : 0];
|
| 52 |
|
|
output smartflit_chanel_t chan_out_all [NE-1 : 0];
|
| 53 |
|
|
|
| 54 |
|
|
//all routers port
|
| 55 |
|
|
smartflit_chanel_t router_chan_in [NR-1 :0][MAX_P-1 : 0];
|
| 56 |
|
|
smartflit_chanel_t router_chan_out [NR-1 :0][MAX_P-1 : 0];
|
| 57 |
|
|
|
| 58 |
|
|
wire [RAw-1 : 0] current_r_addr [NR-1 : 0];
|
| 59 |
|
|
|
| 60 |
|
|
// mesh torus
|
| 61 |
|
|
localparam
|
| 62 |
|
|
EAST = 3'd1,
|
| 63 |
|
|
NORTH = 3'd2,
|
| 64 |
|
|
WEST = 3'd3,
|
| 65 |
|
|
SOUTH = 3'd4;
|
| 66 |
|
|
//ring line
|
| 67 |
|
|
localparam
|
| 68 |
|
|
FORWARD = 2'd1,
|
| 69 |
|
|
BACKWARD= 2'd2;
|
| 70 |
|
|
|
| 71 |
|
|
|
| 72 |
|
|
genvar x,y,l;
|
| 73 |
|
|
generate
|
| 74 |
|
|
/* verilator lint_off WIDTH */
|
| 75 |
|
|
if( TOPOLOGY == "RING" || TOPOLOGY == "LINE") begin : ring_line
|
| 76 |
|
|
/* verilator lint_on WIDTH */
|
| 77 |
|
|
for (x=0; x
|
| 78 |
|
|
|
| 79 |
|
|
|
| 80 |
|
|
assign current_r_addr [x] = x[RAw-1: 0];
|
| 81 |
|
|
|
| 82 |
|
|
router_top #(
|
| 83 |
|
|
.P (MAX_P )
|
| 84 |
|
|
) the_router (
|
| 85 |
|
|
.current_r_addr (current_r_addr [x]),
|
| 86 |
|
|
.chan_in (router_chan_in [x]),
|
| 87 |
|
|
.chan_out (router_chan_out[x]),
|
| 88 |
|
|
.clk (clk ),
|
| 89 |
|
|
.reset (reset ));
|
| 90 |
|
|
|
| 91 |
|
|
if(x < NX-1) begin: not_last_node
|
| 92 |
|
|
assign router_chan_in[x][FORWARD] = router_chan_out [(x+1)][BACKWARD];
|
| 93 |
|
|
end else begin :last_node
|
| 94 |
|
|
/* verilator lint_off WIDTH */
|
| 95 |
|
|
if(TOPOLOGY == "LINE") begin : line_last_x
|
| 96 |
|
|
/* verilator lint_on WIDTH */
|
| 97 |
|
|
assign router_chan_in[x][FORWARD]= {SMARTFLIT_CHANEL_w{1'b0}};
|
| 98 |
|
|
end else begin : ring_last_x
|
| 99 |
|
|
assign router_chan_in[x][FORWARD]= router_chan_out [0][BACKWARD];
|
| 100 |
|
|
end
|
| 101 |
|
|
end
|
| 102 |
|
|
|
| 103 |
|
|
if(x>0)begin :not_first_x
|
| 104 |
|
|
assign router_chan_in[x][BACKWARD]= router_chan_out [(x-1)][FORWARD];
|
| 105 |
|
|
end else begin :first_x
|
| 106 |
|
|
/* verilator lint_off WIDTH */
|
| 107 |
|
|
if(TOPOLOGY == "LINE") begin : line_first_x
|
| 108 |
|
|
/* verilator lint_on WIDTH */
|
| 109 |
|
|
assign router_chan_in[x][BACKWARD]={SMARTFLIT_CHANEL_w{1'b0}};
|
| 110 |
|
|
end else begin : ring_first_x
|
| 111 |
|
|
assign router_chan_in[x][BACKWARD]= router_chan_out [(NX-1)][FORWARD];
|
| 112 |
|
|
end
|
| 113 |
|
|
end
|
| 114 |
|
|
|
| 115 |
|
|
// connect other local ports
|
| 116 |
|
|
for (l=0; l
|
| 117 |
|
|
localparam ENDPID = `endp_id(x,0,l);
|
| 118 |
|
|
localparam LOCALP = (l==0) ? l : l + R2R_CHANELS_MESH_TORI; // first local port is connected to router port 0. The rest are connected at the end
|
| 119 |
|
|
assign router_chan_in[x][LOCALP]= chan_in_all [ENDPID];
|
| 120 |
|
|
assign chan_out_all [ENDPID] = router_chan_out[x][LOCALP];
|
| 121 |
|
|
|
| 122 |
|
|
end// locals
|
| 123 |
|
|
end//x
|
| 124 |
|
|
|
| 125 |
|
|
end else begin :mesh_torus
|
| 126 |
|
|
for (y=0; y
|
| 127 |
|
|
for (x=0; x
|
| 128 |
|
|
localparam R_ADDR = (y<
|
| 129 |
|
|
localparam ROUTER_NUM = (y * NX) + x;
|
| 130 |
|
|
assign current_r_addr [ROUTER_NUM] = R_ADDR[RAw-1 :0];
|
| 131 |
|
|
|
| 132 |
|
|
router_top #(
|
| 133 |
|
|
.P (MAX_P )
|
| 134 |
|
|
) the_router (
|
| 135 |
|
|
.current_r_addr (current_r_addr [ROUTER_NUM]),
|
| 136 |
|
|
.chan_in (router_chan_in [ROUTER_NUM]),
|
| 137 |
|
|
.chan_out (router_chan_out[ROUTER_NUM]),
|
| 138 |
|
|
.clk (clk ),
|
| 139 |
|
|
.reset (reset ));
|
| 140 |
|
|
|
| 141 |
|
|
|
| 142 |
|
|
/*
|
| 143 |
|
|
in [x,y][east] <------ out [x+1 ,y ][west] ;
|
| 144 |
|
|
in [x,y][north] <------ out [x ,y-1][south] ;
|
| 145 |
|
|
in [x,y][west] <------ out [x-1 ,y ][east] ;
|
| 146 |
|
|
in [x,y][south] <------ out [x ,y+1][north] ;
|
| 147 |
|
|
*/
|
| 148 |
|
|
|
| 149 |
|
|
|
| 150 |
|
|
if(x < NX-1) begin: not_last_x
|
| 151 |
|
|
assign router_chan_in[`router_id(x,y)][EAST]= router_chan_out [`router_id(x+1,y)][WEST];
|
| 152 |
|
|
//assign router_credit_in_all [`SELECT_WIRE(x,y,EAST,V)] = router_credit_out_all [`SELECT_WIRE((x+1),y,WEST,V)];
|
| 153 |
|
|
end else begin :last_x
|
| 154 |
|
|
/* verilator lint_off WIDTH */
|
| 155 |
|
|
if(TOPOLOGY == "MESH") begin :last_x_mesh
|
| 156 |
|
|
/* verilator lint_on WIDTH */
|
| 157 |
|
|
assign router_chan_in[`router_id(x,y)][EAST] = {SMARTFLIT_CHANEL_w{1'b0}};
|
| 158 |
|
|
/* verilator lint_off WIDTH */
|
| 159 |
|
|
end else if(TOPOLOGY == "TORUS") begin : last_x_torus
|
| 160 |
|
|
/* verilator lint_on WIDTH */
|
| 161 |
|
|
assign router_chan_in[`router_id(x,y)][EAST] = router_chan_out [`router_id(0,y)][WEST];
|
| 162 |
|
|
/* verilator lint_off WIDTH */
|
| 163 |
|
|
end else if(TOPOLOGY == "FMESH") begin : last_x_fmesh //connect to endp
|
| 164 |
|
|
/* verilator lint_on WIDTH */
|
| 165 |
|
|
localparam EAST_ID = NX*NY*NL + 2*NX + NY +y;
|
| 166 |
|
|
assign router_chan_in [`router_id(x,y)][EAST] = chan_in_all [EAST_ID];
|
| 167 |
|
|
assign chan_out_all [EAST_ID] = router_chan_out [`router_id(x,y)][EAST];
|
| 168 |
|
|
end //topology
|
| 169 |
|
|
end
|
| 170 |
|
|
|
| 171 |
|
|
|
| 172 |
|
|
if(y>0) begin : not_first_y
|
| 173 |
|
|
assign router_chan_in[`router_id(x,y)][NORTH] = router_chan_out [`router_id(x,(y-1))][SOUTH];
|
| 174 |
|
|
end else begin :first_y
|
| 175 |
|
|
/* verilator lint_off WIDTH */
|
| 176 |
|
|
if(TOPOLOGY == "MESH") begin : first_y_mesh
|
| 177 |
|
|
/* verilator lint_on WIDTH */
|
| 178 |
|
|
assign router_chan_in[`router_id(x,y)][NORTH] = {SMARTFLIT_CHANEL_w{1'b0}};
|
| 179 |
|
|
/* verilator lint_off WIDTH */
|
| 180 |
|
|
end else if(TOPOLOGY == "TORUS") begin :first_y_torus
|
| 181 |
|
|
/* verilator lint_on WIDTH */
|
| 182 |
|
|
assign router_chan_in[`router_id(x,y)][NORTH] = router_chan_out [`router_id(x,(NY-1))][SOUTH];
|
| 183 |
|
|
/* verilator lint_off WIDTH */
|
| 184 |
|
|
end else if(TOPOLOGY == "FMESH") begin : first_y_fmesh //connect to endp
|
| 185 |
|
|
/* verilator lint_on WIDTH */
|
| 186 |
|
|
localparam NORTH_ID = NX*NY*NL + x;
|
| 187 |
|
|
assign router_chan_in [`router_id(x,y)][NORTH] = chan_in_all [NORTH_ID];
|
| 188 |
|
|
assign chan_out_all [NORTH_ID] = router_chan_out [`router_id(x,y)][NORTH];
|
| 189 |
|
|
end//topology
|
| 190 |
|
|
end//y>0
|
| 191 |
|
|
|
| 192 |
|
|
|
| 193 |
|
|
if(x>0)begin :not_first_x
|
| 194 |
|
|
assign router_chan_in[`router_id(x,y)][WEST] = router_chan_out [`router_id((x-1),y)][EAST];
|
| 195 |
|
|
end else begin :first_x
|
| 196 |
|
|
/* verilator lint_off WIDTH */
|
| 197 |
|
|
if(TOPOLOGY == "MESH") begin :first_x_mesh
|
| 198 |
|
|
/* verilator lint_on WIDTH */
|
| 199 |
|
|
assign router_chan_in[`router_id(x,y)][WEST] = {SMARTFLIT_CHANEL_w{1'b0}};
|
| 200 |
|
|
/* verilator lint_off WIDTH */
|
| 201 |
|
|
end else if(TOPOLOGY == "TORUS") begin :first_x_torus
|
| 202 |
|
|
/* verilator lint_on WIDTH */
|
| 203 |
|
|
assign router_chan_in[`router_id(x,y)][WEST] = router_chan_out [`router_id((NX-1),y)][EAST] ;
|
| 204 |
|
|
/* verilator lint_off WIDTH */
|
| 205 |
|
|
end else if(TOPOLOGY == "FMESH") begin : first_x_fmesh //connect to endp
|
| 206 |
|
|
/* verilator lint_on WIDTH */
|
| 207 |
|
|
localparam WEST_ID = NX*NY*NL +2*NX + y;
|
| 208 |
|
|
assign router_chan_in [`router_id(x,y)][WEST] = chan_in_all [WEST_ID];
|
| 209 |
|
|
assign chan_out_all [WEST_ID] = router_chan_out [`router_id(x,y)][WEST];
|
| 210 |
|
|
end//topology
|
| 211 |
|
|
end
|
| 212 |
|
|
|
| 213 |
|
|
if(y < NY-1) begin : firsty
|
| 214 |
|
|
assign router_chan_in[`router_id(x,y)][SOUTH] = router_chan_out [`router_id(x,(y+1))][NORTH];
|
| 215 |
|
|
end else begin : lasty
|
| 216 |
|
|
/* verilator lint_off WIDTH */
|
| 217 |
|
|
if(TOPOLOGY == "MESH") begin :ly_mesh
|
| 218 |
|
|
/* verilator lint_on WIDTH */
|
| 219 |
|
|
assign router_chan_in[`router_id(x,y)][SOUTH]= {SMARTFLIT_CHANEL_w{1'b0}};
|
| 220 |
|
|
/* verilator lint_off WIDTH */
|
| 221 |
|
|
end else if(TOPOLOGY == "TORUS") begin :ly_torus
|
| 222 |
|
|
/* verilator lint_on WIDTH */
|
| 223 |
|
|
assign router_chan_in[`router_id(x,y)][SOUTH]= router_chan_out [`router_id(x,0)][NORTH];
|
| 224 |
|
|
end else if(TOPOLOGY == "FMESH") begin : ly_fmesh //connect to endp
|
| 225 |
|
|
/* verilator lint_on WIDTH */
|
| 226 |
|
|
localparam SOUTH_ID = NX*NY*NL + NX + x;
|
| 227 |
|
|
assign router_chan_in [`router_id(x,y)][SOUTH] = chan_in_all [SOUTH_ID];
|
| 228 |
|
|
assign chan_out_all [SOUTH_ID] = router_chan_out [`router_id(x,y)][SOUTH];
|
| 229 |
|
|
end//topology
|
| 230 |
|
|
end
|
| 231 |
|
|
|
| 232 |
|
|
|
| 233 |
|
|
// endpoint(s) connection
|
| 234 |
|
|
// connect other local ports
|
| 235 |
|
|
for (l=0; l
|
| 236 |
|
|
localparam ENDPID = `endp_id(x,y,l);
|
| 237 |
|
|
localparam LOCALP = (l==0) ? l : l + R2R_CHANELS_MESH_TORI; // first local port is connected to router port 0. The rest are connected at the end
|
| 238 |
|
|
|
| 239 |
|
|
assign router_chan_in [`router_id(x,y)][LOCALP] = chan_in_all [ENDPID];
|
| 240 |
|
|
assign chan_out_all [ENDPID] = router_chan_out [`router_id(x,y)][LOCALP];
|
| 241 |
|
|
|
| 242 |
|
|
end// locals
|
| 243 |
|
|
|
| 244 |
|
|
end //y
|
| 245 |
|
|
end //x
|
| 246 |
|
|
end// mesh_torus
|
| 247 |
|
|
|
| 248 |
|
|
endgenerate
|
| 249 |
|
|
|
| 250 |
|
|
endmodule
|
