| 1 |
39 |
wsong0210 |
/*
|
| 2 |
|
|
Asynchronous SDM NoC
|
| 3 |
|
|
(C)2011 Wei Song
|
| 4 |
|
|
Advanced Processor Technologies Group
|
| 5 |
|
|
Computer Science, the Univ. of Manchester, UK
|
| 6 |
|
|
|
| 7 |
|
|
Authors:
|
| 8 |
|
|
Wei Song wsong83@gmail.com
|
| 9 |
|
|
|
| 10 |
|
|
License: LGPL 3.0 or later
|
| 11 |
|
|
|
| 12 |
|
|
data crossbar for the VC router
|
| 13 |
|
|
|
| 14 |
|
|
History:
|
| 15 |
|
|
04/04/2010 Initial version. <wsong83@gmail.com>
|
| 16 |
|
|
12/05/2010 Use MPxP crossbar. <wsong83@gmail.com>
|
| 17 |
|
|
02/06/2011 Clean up for opensource. <wsong83@gmail.com>
|
| 18 |
|
|
|
| 19 |
|
|
*/
|
| 20 |
|
|
|
| 21 |
|
|
module dcb_vc (/*AUTOARG*/
|
| 22 |
|
|
// Outputs
|
| 23 |
|
|
dia, do0, do1, do2, do3, dot,
|
| 24 |
|
|
// Inputs
|
| 25 |
|
|
di0, di1, di2, di3, dit, srtg, nrtg, lrtg, wrtg, ertg, doa
|
| 26 |
|
|
);
|
| 27 |
|
|
parameter DW = 32; // data width of a VC
|
| 28 |
|
|
parameter FT = 3; // wire count of the flit tyoe bus
|
| 29 |
|
|
parameter VCN = 2; // number of VC per direction
|
| 30 |
|
|
parameter SCN = DW/2;
|
| 31 |
|
|
|
| 32 |
|
|
input [4:0][VCN-1:0][SCN-1:0] di0, di1, di2, di3; // data input
|
| 33 |
|
|
input [4:0][VCN-1:0][FT-1:0] dit; // flit type input
|
| 34 |
|
|
output [4:0][VCN-1:0] dia; // input ack
|
| 35 |
|
|
input [VCN-1:0][3:0] srtg, nrtg, lrtg; // routing guide
|
| 36 |
|
|
input [VCN-1:0][1:0] wrtg, ertg;
|
| 37 |
|
|
|
| 38 |
|
|
output [4:0][SCN-1:0] do0, do1, do2, do3; // data output
|
| 39 |
|
|
output [4:0][FT-1:0] dot; // flit type output
|
| 40 |
|
|
input [4:0] doa; // output ack
|
| 41 |
|
|
|
| 42 |
|
|
// internal wires
|
| 43 |
|
|
wire [VCN-1:0][3:0][SCN-1:0] s0, s1, s2, s3;
|
| 44 |
|
|
wire [VCN-1:0][3:0][FT-1:0] sft;
|
| 45 |
|
|
wire [VCN-1:0][3:0] sa;
|
| 46 |
|
|
wire [VCN-1:0][1:0][SCN-1:0] w0, w1, w2, w3;
|
| 47 |
|
|
wire [VCN-1:0][1:0][FT-1:0] wft;
|
| 48 |
|
|
wire [VCN-1:0][1:0] wa;
|
| 49 |
|
|
wire [VCN-1:0][3:0][SCN-1:0] n0, n1, n2, n3;
|
| 50 |
|
|
wire [VCN-1:0][3:0][FT-1:0] nft;
|
| 51 |
|
|
wire [VCN-1:0][3:0] na;
|
| 52 |
|
|
wire [VCN-1:0][1:0][SCN-1:0] e0, e1, e2, e3;
|
| 53 |
|
|
wire [VCN-1:0][1:0][FT-1:0] eft;
|
| 54 |
|
|
wire [VCN-1:0][1:0] ea;
|
| 55 |
|
|
wire [VCN-1:0][3:0][SCN-1:0] l0, l1, l2, l3;
|
| 56 |
|
|
wire [VCN-1:0][3:0][FT-1:0] lft;
|
| 57 |
|
|
wire [VCN-1:0][3:0] la;
|
| 58 |
|
|
|
| 59 |
|
|
wire [3:0][SCN-1:0][VCN-1:0] ss0, ss1, ss2, ss3;
|
| 60 |
|
|
wire [3:0][FT-1:0][VCN-1:0] ssft;
|
| 61 |
|
|
wire [1:0][SCN-1:0][VCN-1:0] sw0, sw1, sw2, sw3;
|
| 62 |
|
|
wire [1:0][FT-1:0][VCN-1:0] swft;
|
| 63 |
|
|
wire [3:0][SCN-1:0][VCN-1:0] sn0, sn1, sn2, sn3;
|
| 64 |
|
|
wire [3:0][FT-1:0][VCN-1:0] snft;
|
| 65 |
|
|
wire [1:0][SCN-1:0][VCN-1:0] se0, se1, se2, se3;
|
| 66 |
|
|
wire [1:0][FT-1:0][VCN-1:0] seft;
|
| 67 |
|
|
wire [3:0][SCN-1:0][VCN-1:0] sl0, sl1, sl2, sl3;
|
| 68 |
|
|
wire [3:0][FT-1:0][VCN-1:0] slft;
|
| 69 |
|
|
|
| 70 |
|
|
wire [3:0][SCN-1:0] ms0, ms1, ms2, ms3;
|
| 71 |
|
|
wire [3:0][FT-1:0] msft;
|
| 72 |
|
|
wire [1:0][SCN-1:0] mw0, mw1, mw2, mw3;
|
| 73 |
|
|
wire [1:0][FT-1:0] mwft;
|
| 74 |
|
|
wire [3:0][SCN-1:0] mn0, mn1, mn2, mn3;
|
| 75 |
|
|
wire [3:0][FT-1:0] mnft;
|
| 76 |
|
|
wire [1:0][SCN-1:0] me0, me1, me2, me3;
|
| 77 |
|
|
wire [1:0][FT-1:0] meft;
|
| 78 |
|
|
wire [3:0][SCN-1:0] ml0, ml1, ml2, ml3;
|
| 79 |
|
|
wire [3:0][FT-1:0] mlft;
|
| 80 |
|
|
|
| 81 |
|
|
genvar i,j,k;
|
| 82 |
|
|
|
| 83 |
|
|
generate
|
| 84 |
|
|
// demux using the routing guides
|
| 85 |
|
|
for(i=0; i<VCN; i++) begin: IMX
|
| 86 |
|
|
vcdmux #(.DW(DW), .VCN(4))
|
| 87 |
|
|
SDMX(
|
| 88 |
|
|
.dia ( dia[0][i] ),
|
| 89 |
|
|
.do0 ( s0[i] ),
|
| 90 |
|
|
.do1 ( s1[i] ),
|
| 91 |
|
|
.do2 ( s2[i] ),
|
| 92 |
|
|
.do3 ( s3[i] ),
|
| 93 |
|
|
.dot ( sft[i] ),
|
| 94 |
|
|
.di0 ( di0[0][i] ),
|
| 95 |
|
|
.di1 ( di1[0][i] ),
|
| 96 |
|
|
.di2 ( di2[0][i] ),
|
| 97 |
|
|
.di3 ( di3[0][i] ),
|
| 98 |
|
|
.dit ( dit[0][i] ),
|
| 99 |
|
|
.divc ( srtg[i] ),
|
| 100 |
|
|
.doa ( sa[i] )
|
| 101 |
|
|
);
|
| 102 |
|
|
|
| 103 |
|
|
vcdmux #(.DW(DW), .VCN(2))
|
| 104 |
|
|
WDMX(
|
| 105 |
|
|
.dia ( dia[1][i] ),
|
| 106 |
|
|
.do0 ( w0[i] ),
|
| 107 |
|
|
.do1 ( w1[i] ),
|
| 108 |
|
|
.do2 ( w2[i] ),
|
| 109 |
|
|
.do3 ( w3[i] ),
|
| 110 |
|
|
.dot ( wft[i] ),
|
| 111 |
|
|
.di0 ( di0[1][i] ),
|
| 112 |
|
|
.di1 ( di1[1][i] ),
|
| 113 |
|
|
.di2 ( di2[1][i] ),
|
| 114 |
|
|
.di3 ( di3[1][i] ),
|
| 115 |
|
|
.dit ( dit[1][i] ),
|
| 116 |
|
|
.divc ( wrtg[i] ),
|
| 117 |
|
|
.doa ( wa[i] )
|
| 118 |
|
|
);
|
| 119 |
|
|
|
| 120 |
|
|
vcdmux #(.DW(DW), .VCN(4))
|
| 121 |
|
|
NDMX(
|
| 122 |
|
|
.dia ( dia[2][i] ),
|
| 123 |
|
|
.do0 ( n0[i] ),
|
| 124 |
|
|
.do1 ( n1[i] ),
|
| 125 |
|
|
.do2 ( n2[i] ),
|
| 126 |
|
|
.do3 ( n3[i] ),
|
| 127 |
|
|
.dot ( nft[i] ),
|
| 128 |
|
|
.di0 ( di0[2][i] ),
|
| 129 |
|
|
.di1 ( di1[2][i] ),
|
| 130 |
|
|
.di2 ( di2[2][i] ),
|
| 131 |
|
|
.di3 ( di3[2][i] ),
|
| 132 |
|
|
.dit ( dit[2][i] ),
|
| 133 |
|
|
.divc ( nrtg[i] ),
|
| 134 |
|
|
.doa ( na[i] )
|
| 135 |
|
|
);
|
| 136 |
|
|
|
| 137 |
|
|
vcdmux #(.DW(DW), .VCN(2))
|
| 138 |
|
|
EDMX(
|
| 139 |
|
|
.dia ( dia[3][i] ),
|
| 140 |
|
|
.do0 ( e0[i] ),
|
| 141 |
|
|
.do1 ( e1[i] ),
|
| 142 |
|
|
.do2 ( e2[i] ),
|
| 143 |
|
|
.do3 ( e3[i] ),
|
| 144 |
|
|
.dot ( eft[i] ),
|
| 145 |
|
|
.di0 ( di0[3][i] ),
|
| 146 |
|
|
.di1 ( di1[3][i] ),
|
| 147 |
|
|
.di2 ( di2[3][i] ),
|
| 148 |
|
|
.di3 ( di3[3][i] ),
|
| 149 |
|
|
.dit ( dit[3][i] ),
|
| 150 |
|
|
.divc ( ertg[i] ),
|
| 151 |
|
|
.doa ( ea[i] )
|
| 152 |
|
|
);
|
| 153 |
|
|
|
| 154 |
|
|
vcdmux #(.DW(DW), .VCN(4))
|
| 155 |
|
|
LDMX(
|
| 156 |
|
|
.dia ( dia[4][i] ),
|
| 157 |
|
|
.do0 ( l0[i] ),
|
| 158 |
|
|
.do1 ( l1[i] ),
|
| 159 |
|
|
.do2 ( l2[i] ),
|
| 160 |
|
|
.do3 ( l3[i] ),
|
| 161 |
|
|
.dot ( lft[i] ),
|
| 162 |
|
|
.di0 ( di0[4][i] ),
|
| 163 |
|
|
.di1 ( di1[4][i] ),
|
| 164 |
|
|
.di2 ( di2[4][i] ),
|
| 165 |
|
|
.di3 ( di3[4][i] ),
|
| 166 |
|
|
.dit ( dit[4][i] ),
|
| 167 |
|
|
.divc ( lrtg[i] ),
|
| 168 |
|
|
.doa ( la[i] )
|
| 169 |
|
|
);
|
| 170 |
|
|
|
| 171 |
|
|
// acknowledgement
|
| 172 |
|
|
c2 SA0 (.a0(srtg[i][0]), .a1(doa[1]), .q(sa[i][0]));
|
| 173 |
|
|
c2 SA1 (.a0(srtg[i][1]), .a1(doa[2]), .q(sa[i][1]));
|
| 174 |
|
|
c2 SA2 (.a0(srtg[i][2]), .a1(doa[3]), .q(sa[i][2]));
|
| 175 |
|
|
c2 SA3 (.a0(srtg[i][3]), .a1(doa[4]), .q(sa[i][3]));
|
| 176 |
|
|
c2 WA0 (.a0(wrtg[i][0]), .a1(doa[3]), .q(wa[i][0]));
|
| 177 |
|
|
c2 WA1 (.a0(wrtg[i][1]), .a1(doa[4]), .q(wa[i][1]));
|
| 178 |
|
|
c2 NA0 (.a0(nrtg[i][0]), .a1(doa[0]), .q(na[i][0]));
|
| 179 |
|
|
c2 NA1 (.a0(nrtg[i][1]), .a1(doa[1]), .q(na[i][1]));
|
| 180 |
|
|
c2 NA2 (.a0(nrtg[i][2]), .a1(doa[3]), .q(na[i][2]));
|
| 181 |
|
|
c2 NA3 (.a0(nrtg[i][3]), .a1(doa[4]), .q(na[i][3]));
|
| 182 |
|
|
c2 EA0 (.a0(ertg[i][0]), .a1(doa[1]), .q(ea[i][0]));
|
| 183 |
|
|
c2 EA1 (.a0(ertg[i][1]), .a1(doa[4]), .q(ea[i][1]));
|
| 184 |
|
|
c2 LA0 (.a0(lrtg[i][0]), .a1(doa[0]), .q(la[i][0]));
|
| 185 |
|
|
c2 LA1 (.a0(lrtg[i][1]), .a1(doa[1]), .q(la[i][1]));
|
| 186 |
|
|
c2 LA2 (.a0(lrtg[i][2]), .a1(doa[2]), .q(la[i][2]));
|
| 187 |
|
|
c2 LA3 (.a0(lrtg[i][3]), .a1(doa[3]), .q(la[i][3]));
|
| 188 |
|
|
|
| 189 |
|
|
end // block: IMX
|
| 190 |
|
|
endgenerate
|
| 191 |
|
|
|
| 192 |
|
|
generate
|
| 193 |
|
|
for(i=0; i<VCN; i++) begin: V
|
| 194 |
|
|
for(j=0; j<4; j++) begin: D0
|
| 195 |
|
|
for(k=0; k<SCN; k++) begin: D
|
| 196 |
|
|
assign ss0[j][k][i] = s0[i][j][k];
|
| 197 |
|
|
assign ss1[j][k][i] = s1[i][j][k];
|
| 198 |
|
|
assign ss2[j][k][i] = s2[i][j][k];
|
| 199 |
|
|
assign ss3[j][k][i] = s3[i][j][k];
|
| 200 |
|
|
assign sn0[j][k][i] = n0[i][j][k];
|
| 201 |
|
|
assign sn1[j][k][i] = n1[i][j][k];
|
| 202 |
|
|
assign sn2[j][k][i] = n2[i][j][k];
|
| 203 |
|
|
assign sn3[j][k][i] = n3[i][j][k];
|
| 204 |
|
|
assign sl0[j][k][i] = l0[i][j][k];
|
| 205 |
|
|
assign sl1[j][k][i] = l1[i][j][k];
|
| 206 |
|
|
assign sl2[j][k][i] = l2[i][j][k];
|
| 207 |
|
|
assign sl3[j][k][i] = l3[i][j][k];
|
| 208 |
|
|
end // block: D
|
| 209 |
|
|
for(k=0; k<FT; k++) begin: T
|
| 210 |
|
|
assign ssft[j][k][i] = sft[i][j][k];
|
| 211 |
|
|
assign snft[j][k][i] = nft[i][j][k];
|
| 212 |
|
|
assign slft[j][k][i] = lft[i][j][k];
|
| 213 |
|
|
end // block: T
|
| 214 |
|
|
end // block: D0
|
| 215 |
|
|
|
| 216 |
|
|
for(j=0; j<2; j++) begin: D1
|
| 217 |
|
|
for(k=0; k<SCN; k++) begin: D
|
| 218 |
|
|
assign sw0[j][k][i] = w0[i][j][k];
|
| 219 |
|
|
assign sw1[j][k][i] = w1[i][j][k];
|
| 220 |
|
|
assign sw2[j][k][i] = w2[i][j][k];
|
| 221 |
|
|
assign sw3[j][k][i] = w3[i][j][k];
|
| 222 |
|
|
assign se0[j][k][i] = e0[i][j][k];
|
| 223 |
|
|
assign se1[j][k][i] = e1[i][j][k];
|
| 224 |
|
|
assign se2[j][k][i] = e2[i][j][k];
|
| 225 |
|
|
assign se3[j][k][i] = e3[i][j][k];
|
| 226 |
|
|
end // block: D
|
| 227 |
|
|
for(k=0; k<FT; k++) begin: T
|
| 228 |
|
|
assign swft[j][k][i] = wft[i][j][k];
|
| 229 |
|
|
assign seft[j][k][i] = eft[i][j][k];
|
| 230 |
|
|
end // block: T
|
| 231 |
|
|
end // block: D1
|
| 232 |
|
|
end
|
| 233 |
|
|
|
| 234 |
|
|
for(j=0; j<4; j++) begin: D2
|
| 235 |
|
|
for(k=0; k<SCN; k++) begin: D
|
| 236 |
|
|
assign ms0[j][k] = |ss0[j][k];
|
| 237 |
|
|
assign ms1[j][k] = |ss1[j][k];
|
| 238 |
|
|
assign ms2[j][k] = |ss2[j][k];
|
| 239 |
|
|
assign ms3[j][k] = |ss3[j][k];
|
| 240 |
|
|
assign mn0[j][k] = |sn0[j][k];
|
| 241 |
|
|
assign mn1[j][k] = |sn1[j][k];
|
| 242 |
|
|
assign mn2[j][k] = |sn2[j][k];
|
| 243 |
|
|
assign mn3[j][k] = |sn3[j][k];
|
| 244 |
|
|
assign ml0[j][k] = |sl0[j][k];
|
| 245 |
|
|
assign ml1[j][k] = |sl1[j][k];
|
| 246 |
|
|
assign ml2[j][k] = |sl2[j][k];
|
| 247 |
|
|
assign ml3[j][k] = |sl3[j][k];
|
| 248 |
|
|
end // block: D
|
| 249 |
|
|
for(k=0; k<FT; k++) begin: T
|
| 250 |
|
|
assign msft[j][k] = |ssft[j][k];
|
| 251 |
|
|
assign mnft[j][k] = |snft[j][k];
|
| 252 |
|
|
assign mlft[j][k] = |slft[j][k];
|
| 253 |
|
|
end
|
| 254 |
|
|
end // block: D2
|
| 255 |
|
|
|
| 256 |
|
|
for(j=0; j<2; j++) begin: D4
|
| 257 |
|
|
for(k=0; k<SCN; k++) begin: D
|
| 258 |
|
|
assign mw0[j][k] = |sw0[j][k];
|
| 259 |
|
|
assign mw1[j][k] = |sw1[j][k];
|
| 260 |
|
|
assign mw2[j][k] = |sw2[j][k];
|
| 261 |
|
|
assign mw3[j][k] = |sw3[j][k];
|
| 262 |
|
|
assign me0[j][k] = |se0[j][k];
|
| 263 |
|
|
assign me1[j][k] = |se1[j][k];
|
| 264 |
|
|
assign me2[j][k] = |se2[j][k];
|
| 265 |
|
|
assign me3[j][k] = |se3[j][k];
|
| 266 |
|
|
end // block: D
|
| 267 |
|
|
for(k=0; k<FT; k++) begin: T
|
| 268 |
|
|
assign mwft[j][k] = |swft[j][k];
|
| 269 |
|
|
assign meft[j][k] = |seft[j][k];
|
| 270 |
|
|
end // block: T
|
| 271 |
|
|
end // block: D4
|
| 272 |
|
|
endgenerate
|
| 273 |
|
|
|
| 274 |
|
|
// south output
|
| 275 |
|
|
assign do0[0] = mn0[0]|ml0[0];
|
| 276 |
|
|
assign do1[0] = mn1[0]|ml1[0];
|
| 277 |
|
|
assign do2[0] = mn2[0]|ml2[0];
|
| 278 |
|
|
assign do3[0] = mn3[0]|ml3[0];
|
| 279 |
|
|
assign dot[0] = mnft[0]|mlft[0];
|
| 280 |
|
|
|
| 281 |
|
|
// west output
|
| 282 |
|
|
assign do0[1] = ms0[0]|mn0[1]|me0[0]|ml0[1];
|
| 283 |
|
|
assign do1[1] = ms1[0]|mn1[1]|me1[0]|ml1[1];
|
| 284 |
|
|
assign do2[1] = ms2[0]|mn2[1]|me2[0]|ml2[1];
|
| 285 |
|
|
assign do3[1] = ms3[0]|mn3[1]|me3[0]|ml3[1];
|
| 286 |
|
|
assign dot[1] = msft[0]|mnft[1]|meft[0]|mlft[1];
|
| 287 |
|
|
|
| 288 |
|
|
// south output
|
| 289 |
|
|
assign do0[2] = ms0[1]|ml0[2];
|
| 290 |
|
|
assign do1[2] = ms1[1]|ml1[2];
|
| 291 |
|
|
assign do2[2] = ms2[1]|ml2[2];
|
| 292 |
|
|
assign do3[2] = ms3[1]|ml3[2];
|
| 293 |
|
|
assign dot[2] = msft[1]|mlft[2];
|
| 294 |
|
|
|
| 295 |
|
|
// east output
|
| 296 |
|
|
assign do0[3] = ms0[2]|mw0[0]|mn0[2]|ml0[3];
|
| 297 |
|
|
assign do1[3] = ms1[2]|mw1[0]|mn1[2]|ml1[3];
|
| 298 |
|
|
assign do2[3] = ms2[2]|mw2[0]|mn2[2]|ml2[3];
|
| 299 |
|
|
assign do3[3] = ms3[2]|mw3[0]|mn3[2]|ml3[3];
|
| 300 |
|
|
assign dot[3] = msft[2]|mwft[0]|mnft[2]|mlft[3];
|
| 301 |
|
|
|
| 302 |
|
|
// local output
|
| 303 |
|
|
assign do0[4] = ms0[3]|mw0[1]|mn0[3]|me0[1];
|
| 304 |
|
|
assign do1[4] = ms1[3]|mw1[1]|mn1[3]|me1[1];
|
| 305 |
|
|
assign do2[4] = ms2[3]|mw2[1]|mn2[3]|me2[1];
|
| 306 |
|
|
assign do3[4] = ms3[3]|mw3[1]|mn3[3]|me3[1];
|
| 307 |
|
|
assign dot[4] = msft[3]|mwft[1]|mnft[3]|meft[1];
|
| 308 |
|
|
|
| 309 |
|
|
|
| 310 |
|
|
endmodule // dcb_vc
|
