Subversion Repositories async_sdm_noc

/*
 Asynchronous SDM NoC
 (C)2011 Wei Song
 Advanced Processor Technologies Group
 Computer Science, the Univ. of Manchester, UK
 
 Authors: 
 Wei Song     wsong83@gmail.com
 
 License: LGPL 3.0 or later
 
 Data Clos network.
 *** SystemVerilog is used ***
 
 History:
 17/07/2010  Initial version. <wsong83@gmail.com>
 20/09/2010  Supporting channel slicing and SDM using macro difinitions. <wsong83@gmail.com>
 23/05/2011  Clean up for opensource. <wsong83@gmail.com>
 21/06/2011  Prepare to support buffered Clos. <wsong83@gmail.com>
 
*/
 
// the router structure definitions
`include "define.v"
 
module dclos (
   // Outputs
   so0, so1, so2, so3, wo0, wo1, wo2, wo3, no0, no1, no2, no3, eo0,
   eo1, eo2, eo3, lo0, lo1, lo2, lo3, so4, wo4, no4, eo4, lo4, sia,
   wia, nia, eia, lia,
   // Inputs
   si0, si1, si2, si3, wi0, wi1, wi2, wi3, ni0, ni1, ni2, ni3, ei0,
   ei1, ei2, ei3, li0, li1, li2, li3, si4, wi4, ni4, ei4, li4, soa,
   woa, noa, eoa, loa, imcfg, scfg, ncfg, wcfg, ecfg, lcfg
`ifdef ENABLE_BUFFERED_CLOS
   , soa4, woa4, noa4, eoa4, loa4
`endif
   , rst_n
   );
 
   parameter MN = 2;		// number of CMs
   parameter NN = 2;		// number of ports in an IM or OM, equ. to number of virtual circuits
   parameter DW = 8;		// datawidth of a single virtual circuit/port
   parameter SCN = DW/2;	// number of 1-of-4 sub-channels in one port
 
   input [NN-1:0][SCN-1:0]     si0, si1, si2, si3; // south input [0], X+1
   input [NN-1:0][SCN-1:0]     wi0, wi1, wi2, wi3; // west input [1], Y-1
   input [NN-1:0][SCN-1:0]     ni0, ni1, ni2, ni3; // north input [2], X-1
   input [NN-1:0][SCN-1:0]     ei0, ei1, ei2, ei3; // east input [3], Y+1
   input [NN-1:0][SCN-1:0]     li0, li1, li2, li3; // local input
   output [NN-1:0][SCN-1:0]    so0, so1, so2, so3; // south output
   output [NN-1:0][SCN-1:0]    wo0, wo1, wo2, wo3; // west output
   output [NN-1:0][SCN-1:0]    no0, no1, no2, no3; // north output
   output [NN-1:0][SCN-1:0]    eo0, eo1, eo2, eo3; // east output
   output [NN-1:0][SCN-1:0]    lo0, lo1, lo2, lo3; // local output
 
   // eof bits and ack lines
`ifdef ENABLE_CHANNEL_SLICING
   input [NN-1:0][SCN-1:0]     si4, wi4, ni4, ei4, li4;
   output [NN-1:0][SCN-1:0]    so4, wo4, no4, eo4, lo4;
   output [NN-1:0][SCN-1:0]    sia, wia, nia, eia, lia;
   input [NN-1:0][SCN-1:0]     soa, woa, noa, eoa, loa;
 `ifdef ENABLE_BUFFERED_CLOS
   input [NN-1:0][SCN-1:0]     soa4, woa4, noa4, eoa4, loa4; // the eof ack from output buffers
 `endif
`else
   input [NN-1:0] 	       si4, wi4, ni4, ei4, li4;
   output [NN-1:0] 	       so4, wo4, no4, eo4, lo4;
   output [NN-1:0] 	       sia, wia, nia, eia, lia;
   input [NN-1:0] 	       soa, woa, noa, eoa, loa;
 `ifdef ENABLE_BUFFERED_CLOS
   input [NN-1:0] 	       soa4, woa4, noa4, eoa4, loa4; // the eof ack from output buffers
 `endif
`endif // !`ifdef ENABLE_CHANNEL_SLICING
 
   input [4:0][MN-1:0][NN-1:0] imcfg; // configuration for IMs
   // configuration for CMs
   input [MN-1:0][1:0] 	       scfg, ncfg;
   input [MN-1:0][3:0] 	       wcfg, ecfg, lcfg;
   // no OMs
 
   input 		       rst_n; // globale active low reset
 
   // output of IMs
   wire [MN-1:0][SCN-1:0]      imos0, imos1, imos2, imos3;
   wire [MN-1:0][SCN-1:0]      imow0, imow1, imow2, imow3;
   wire [MN-1:0][SCN-1:0]      imon0, imon1, imon2, imon3;
   wire [MN-1:0][SCN-1:0]      imoe0, imoe1, imoe2, imoe3;
   wire [MN-1:0][SCN-1:0]      imol0, imol1, imol2, imol3;
`ifdef ENABLE_CHANNEL_SLICING
   wire [MN-1:0][SCN-1:0]      imos4, imow4, imon4, imoe4, imol4;
   wire [MN-1:0][SCN-1:0]      imosa, imowa, imona, imoea, imola;
 `ifdef ENABLE_BUFFERED_CLOS
   wire [MN-1:0][SCN-1:0]      imosa4, imowa4, imona4, imoea4, imola4;
   wire [MN-1:0][SCN-1:0]      imosdeca, imowdeca, imondeca, imoedeca, imoldeca;
   wire [MN-1:0][SCN-1:0]      imoseofan, imoweofan, imoneofan, imoeeofan, imoleofan;
 `endif
`else
   wire [MN-1:0] 	       imos4, imow4, imon4, imoe4, imol4;
   wire [MN-1:0] 	       imosa, imowa, imona, imoea, imola;
 `ifdef ENABLE_BUFFERED_CLOS
   wire [MN-1:0]               imosdeca, imowdeca, imondeca, imoedeca, imoldeca;
   wire [MN-1:0] 	       imosa4, imowa4, imona4, imoea4, imola4;
   wire [MN-1:0] 	       imoseofan, imoweofan, imoneofan, imoeeofan, imoleofan;
 `endif
`endif
 
   // input of CMs
   wire [MN-1:0][4:0][SCN-1:0] cmi0, cmi1, cmi2, cmi3;
`ifdef ENABLE_CHANNEL_SLICING
   wire [MN-1:0][4:0][SCN-1:0] cmi4, cmia;
 `ifdef ENABLE_BUFFERED_CLOS
   wire [MN-1:0][4:0][SCN-1:0] cmian;
 `endif
`else
   wire [MN-1:0][4:0] 	       cmi4, cmia;
 `ifdef ENABLE_BUFFERED_CLOS
   wire [MN-1:0][4:0] 	       cmian;
 `endif
`endif
 
   // output of CMs
   wire [MN-1:0][4:0][SCN-1:0] cmo0, cmo1, cmo2, cmo3;
`ifdef ENABLE_CHANNEL_SLICING
   wire [MN-1:0][4:0][SCN-1:0] cmo4, cmoa;
 `ifdef ENABLE_BUFFERED_CLOS
   wire [MN-1:0][4:0][SCN-1:0] cmoa4;
 `endif
`else
   wire [MN-1:0][4:0] 	       cmo4, cmoa;
 `ifdef ENABLE_BUFFERED_CLOS
   wire [MN-1:0][4:0] 	       cmoa4;
 `endif
`endif
 
   genvar 		       i,j,k;
 
   dcb #(.NN(NN), .MN(MN), .DW(DW))
   SIM (
	.o0  ( imos0    ),
	.o1  ( imos1    ),
	.o2  ( imos2    ),
	.o3  ( imos3    ),
	.o4  ( imos4    ),
	.ia  ( sia      ),
	.i0  ( si0      ),
	.i1  ( si1      ),
	.i2  ( si2      ),
	.i3  ( si3      ),
	.i4  ( si4      ),
	.oa  ( imosa    ),
`ifdef ENABLE_BUFFERED_CLOS
	.oa4 ( imosa4   ),
`endif
	.cfg ( imcfg[0] )
	);
 
   dcb #(.NN(NN), .MN(MN), .DW(DW))
   WIM (
	.o0  ( imow0    ),
	.o1  ( imow1    ),
	.o2  ( imow2    ),
	.o3  ( imow3    ),
	.o4  ( imow4    ),
	.ia  ( wia      ),
	.i0  ( wi0      ),
	.i1  ( wi1      ),
	.i2  ( wi2      ),
	.i3  ( wi3      ),
	.i4  ( wi4      ),
	.oa  ( imowa    ),
`ifdef ENABLE_BUFFERED_CLOS
	.oa4 ( imowa4   ),
`endif
	.cfg ( imcfg[1] )
	);
 
   dcb #(.NN(NN), .MN(MN), .DW(DW))
   NIM (
	.o0  ( imon0    ),
	.o1  ( imon1    ),
	.o2  ( imon2    ),
	.o3  ( imon3    ),
	.o4  ( imon4    ),
	.ia  ( nia      ),
	.i0  ( ni0      ),
	.i1  ( ni1      ),
	.i2  ( ni2      ),
	.i3  ( ni3      ),
	.i4  ( ni4      ),
	.oa  ( imona    ),
`ifdef ENABLE_BUFFERED_CLOS
	.oa4 ( imona4   ),
`endif
	.cfg ( imcfg[2] )
       );
 
   dcb #(.NN(NN), .MN(MN), .DW(DW))
   EIM (
	.o0  ( imoe0    ),
	.o1  ( imoe1    ),
	.o2  ( imoe2    ),
	.o3  ( imoe3    ),
	.o4  ( imoe4    ),
	.ia  ( eia      ),
	.i0  ( ei0      ),
	.i1  ( ei1      ),
	.i2  ( ei2      ),
	.i3  ( ei3      ),
	.i4  ( ei4      ),
	.oa  ( imoea    ),
`ifdef ENABLE_BUFFERED_CLOS
	.oa4 ( imoea4   ),
`endif
	.cfg ( imcfg[3] )
	);
 
   dcb #(.NN(NN), .MN(MN), .DW(DW))
   LIM (
	.o0  ( imol0    ),
	.o1  ( imol1    ),
	.o2  ( imol2    ),
	.o3  ( imol3    ),
	.o4  ( imol4    ),
	.ia  ( lia      ),
	.i0  ( li0      ),
	.i1  ( li1      ),
	.i2  ( li2      ),
	.i3  ( li3      ),
	.i4  ( li4      ),
	.oa  ( imola    ),
`ifdef ENABLE_BUFFERED_CLOS
	.oa4 ( imola4   ),
`endif
	.cfg ( imcfg[4] )
	);
 
   generate for(i=0; i<MN; i++) begin: IMSHF
`ifdef ENABLE_BUFFERED_CLOS
      // the buffer stage between IM and CM
 `ifdef ENABLE_CHANNEL_SLICING
      for(j=0; j<SCN; j++) begin:SC_S
	 pipe4 #(.DW(2))
	 P (
	    .o0 ( cmi0[i][0]  ),
	    .o1 ( cmi1[i][0]  ),
	    .o2 ( cmi2[i][0]  ),
	    .o3 ( cmi3[i][0]  ),
	    .ia ( imosa[i]    ),
	    .i0 ( imos0[i]    ),
	    .i1 ( imos1[i]    ),
	    .i2 ( imos3[i]    ),
	    .i3 ( imos4[i]    ),
	    .oa ( cmian[i][0]  )
	    );
 
	 pipen #(.DW(1))
	 PEoF (
	       .d_in_a  (              ),  // imosa4[i]    ),
	       .d_out   ( cmi4[i][0]   ),
	       .d_in    ( imos4[i]     ),
	       .d_out_a ( imoseofan[i] ),
	       );
 
	 ppc PCTL (
		   .deca  ( imosdeca[i]   ),
		   .dia   ( imosa4[i]     ),
		   .eof   ( cmi4[i][0]    ), 
		   .doa   ( cmia[i][0]    ),
		   .dec   ( 
		   );
 
	 assign cmian[i][0] = (~cmia[i][0])&rst_n;
	 assign imoseofan[i] = (imosdeca[i])&rst_n;
      end // block: SC
 
      pipen #(.DW(4))
      S_PDIR (
	      .d_in_a (
 
 
 
 
`else
      // shuffle the interconnects between IMs and CMs
      assign cmi0[i][0] = imos0[i];
      assign cmi1[i][0] = imos1[i];
      assign cmi2[i][0] = imos2[i];
      assign cmi3[i][0] = imos3[i];
      assign cmi4[i][0] = imos4[i];
      assign imosa[i] = cmia[i][0];
 
      assign cmi0[i][1] = imow0[i];
      assign cmi1[i][1] = imow1[i];
      assign cmi2[i][1] = imow2[i];
      assign cmi3[i][1] = imow3[i];
      assign cmi4[i][1] = imow4[i];
      assign imowa[i] = cmia[i][1];
 
      assign cmi0[i][2] = imon0[i];
      assign cmi1[i][2] = imon1[i];
      assign cmi2[i][2] = imon2[i];
      assign cmi3[i][2] = imon3[i];
      assign cmi4[i][2] = imon4[i];
      assign imona[i] = cmia[i][2];
 
      assign cmi0[i][3] = imoe0[i];
      assign cmi1[i][3] = imoe1[i];
      assign cmi2[i][3] = imoe2[i];
      assign cmi3[i][3] = imoe3[i];
      assign cmi4[i][3] = imoe4[i];
      assign imoea[i] = cmia[i][3];
 
      assign cmi0[i][4] = imol0[i];
      assign cmi1[i][4] = imol1[i];
      assign cmi2[i][4] = imol2[i];
      assign cmi3[i][4] = imol3[i];
      assign cmi4[i][4] = imol4[i];
      assign imola[i] = cmia[i][4];
`endif // !`ifdef ENABLE_BUFFERED_CLOS
 
      // CM modules
      dcb_xy #(.VCN(1), .VCW(DW))
      CM (
	  .sia   ( cmia[i][0]   ), 
	  .wia   ( cmia[i][1]   ), 
	  .nia   ( cmia[i][2]   ), 
	  .eia   ( cmia[i][3]   ), 
	  .lia   ( cmia[i][4]   ), 
	  .so0   ( cmo0[i][0]   ), 
	  .so1   ( cmo1[i][0]   ), 
	  .so2   ( cmo2[i][0]   ), 
	  .so3   ( cmo3[i][0]   ), 
	  .so4   ( cmo4[i][0]   ), 
	  .wo0   ( cmo0[i][1]   ), 
	  .wo1   ( cmo1[i][1]   ), 
	  .wo2   ( cmo2[i][1]   ),
	  .wo3   ( cmo3[i][1]   ), 
	  .wo4   ( cmo4[i][1]   ) , 
	  .no0   ( cmo0[i][2]   ), 
	  .no1   ( cmo1[i][2]   ), 
	  .no2   ( cmo2[i][2]   ), 
	  .no3   ( cmo3[i][2]   ), 
	  .no4   ( cmo4[i][2]   ), 
	  .eo0   ( cmo0[i][3]   ), 
	  .eo1   ( cmo1[i][3]   ), 
	  .eo2   ( cmo2[i][3]   ), 
	  .eo3   ( cmo3[i][3]   ), 
	  .eo4   ( cmo4[i][3]   ), 
	  .lo0   ( cmo0[i][4]   ),
	  .lo1   ( cmo1[i][4]   ), 
	  .lo2   ( cmo2[i][4]   ), 
	  .lo3   ( cmo3[i][4]   ), 
	  .lo4   ( cmo4[i][4]   ),
	  .si0   ( cmi0[i][0]   ), 
	  .si1   ( cmi1[i][0]   ), 
	  .si2   ( cmi2[i][0]   ), 
	  .si3   ( cmi3[i][0]   ), 
	  .si4   ( cmi4[i][0]   ), 
	  .wi0   ( cmi0[i][1]   ), 
	  .wi1   ( cmi1[i][1]   ), 
	  .wi2   ( cmi2[i][1]   ), 
	  .wi3   ( cmi3[i][1]   ), 
	  .wi4   ( cmi4[i][1]   ), 
	  .ni0   ( cmi0[i][2]   ), 
	  .ni1   ( cmi1[i][2]   ), 
	  .ni2   ( cmi2[i][2]   ),
	  .ni3   ( cmi3[i][2]   ), 
	  .ni4   ( cmi4[i][2]   ), 
	  .ei0   ( cmi0[i][3]   ), 
	  .ei1   ( cmi1[i][3]   ), 
	  .ei2   ( cmi2[i][3]   ), 
	  .ei3   ( cmi3[i][3]   ), 
	  .ei4   ( cmi4[i][3]   ), 
	  .li0   ( cmi0[i][4]   ), 
	  .li1   ( cmi1[i][4]   ), 
	  .li2   ( cmi2[i][4]   ), 
	  .li3   ( cmi3[i][4]   ), 
	  .li4   ( cmi4[i][4]   ), 
	  .soa   ( cmoa[i][0]   ),
	  .woa   ( cmoa[i][1]   ),
	  .noa   ( cmoa[i][2]   ),
	  .eoa   ( cmoa[i][3]   ),
	  .loa   ( cmoa[i][4]   ),
`ifdef ENABLE_BUFFERED_CLOS
	  .soa4  ( cmoa4[i][0]  ),
	  .woa4  ( cmoa4[i][1]  ),
	  .noa4  ( cmoa4[i][2]  ),
	  .eoa4  ( cmoa4[i][3]  ),
	  .loa4  ( cmoa4[i][4]  ),
`endif
	  .wcfg  ( wcfg[i]      ), 
	  .ecfg  ( ecfg[i]      ), 
	  .lcfg  ( lcfg[i]      ), 
	  .scfg  ( scfg[i]      ), 
	  .ncfg  ( ncfg[i]      )
	  );
 
      // shuffle between CMs and OMs(OPs)
      assign so0[i] = cmo0[i][0];
      assign so1[i] = cmo1[i][0];
      assign so2[i] = cmo2[i][0];
      assign so3[i] = cmo3[i][0];
      assign so4[i] = cmo4[i][0];
      assign cmoa[i][0] = soa[i];
 
      assign wo0[i] = cmo0[i][1];
      assign wo1[i] = cmo1[i][1];
      assign wo2[i] = cmo2[i][1];
      assign wo3[i] = cmo3[i][1];
      assign wo4[i] = cmo4[i][1];
      assign cmoa[i][1] = woa[i];
 
      assign no0[i] = cmo0[i][2];
      assign no1[i] = cmo1[i][2];
      assign no2[i] = cmo2[i][2];
      assign no3[i] = cmo3[i][2];
      assign no4[i] = cmo4[i][2];
      assign cmoa[i][2] = noa[i];
 
      assign eo0[i] = cmo0[i][3];
      assign eo1[i] = cmo1[i][3];
      assign eo2[i] = cmo2[i][3];
      assign eo3[i] = cmo3[i][3];
      assign eo4[i] = cmo4[i][3];
      assign cmoa[i][3] = eoa[i];
 
      assign lo0[i] = cmo0[i][4];
      assign lo1[i] = cmo1[i][4];
      assign lo2[i] = cmo2[i][4];
      assign lo3[i] = cmo3[i][4];
      assign lo4[i] = cmo4[i][4];
      assign cmoa[i][4] = loa[i];
 
`ifdef ENABLE_BUFFERED_CLOS
      assign cmoa4[i][0] = soa4[i];
      assign cmoa4[i][1] = woa4[i];
      assign cmoa4[i][2] = noa4[i];
      assign cmoa4[i][3] = eoa4[i];
      assign cmoa4[i][4] = loa4[i];
`endif
   end // block: IMSHF
 
   endgenerate
 
 
endmodule // dclos