// synthesis translate_off
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`include "pronoc_def.v"
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`timescale 1ns / 1ps
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// synthesis translate_on
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/**************************************
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/**************************************
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* Module: fattree
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* Module: fattree
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* Date:2019-01-01
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* Date:2019-01-01
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* Author: alireza
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* Author: alireza
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*
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*
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*
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*
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Description:
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Description:
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FatTree
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FatTree
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Each level of the hierarchical indirect Network has
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Each level of the hierarchical indirect Network has
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k^(l-1) Routers. The Routers are organized such that
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k^(l-1) Routers. The Routers are organized such that
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each node has k descendents, and each parent is
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each node has k descendents, and each parent is
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replicated k times.
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replicated k times.
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most routers has 2K ports, excep the top level has only K
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most routers has 2K ports, excep the top level has only K
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***************************************/
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***************************************/
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module fattree_noc_top
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module fattree_noc_top
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import pronoc_pkg::*;
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import pronoc_pkg::*;
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(
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(
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reset,
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reset,
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clk,
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clk,
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chan_in_all,
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chan_in_all,
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chan_out_all
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chan_out_all,
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router_event
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);
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);
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input clk,reset;
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input clk,reset;
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//local ports
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//Endpoints ports
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input smartflit_chanel_t chan_in_all [NE-1 : 0];
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input smartflit_chanel_t chan_in_all [NE-1 : 0];
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output smartflit_chanel_t chan_out_all [NE-1 : 0];
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output smartflit_chanel_t chan_out_all [NE-1 : 0];
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//Events
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output router_event_t router_event [NR-1 : 0][MAX_P-1 : 0];
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//all routers port
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//all routers port
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smartflit_chanel_t router_chan_in [NR-1 :0][MAX_P-1 : 0];
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smartflit_chanel_t router_chan_in [NR-1 :0][MAX_P-1 : 0];
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smartflit_chanel_t router_chan_out [NR-1 :0][MAX_P-1 : 0];
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smartflit_chanel_t router_chan_out [NR-1 :0][MAX_P-1 : 0];
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localparam
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localparam
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PV = V * MAX_P,
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PV = V * MAX_P,
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PFw = MAX_P * Fw,
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PFw = MAX_P * Fw,
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NRL= NE/K, //number of router in each layer
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NRL= NE/K, //number of router in each layer
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NEFw = NE * Fw,
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NEFw = NE * Fw,
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NEV = NE * V,
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NEV = NE * V,
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CONG_ALw = CONGw * MAX_P,
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CONG_ALw = CONGw * MAX_P,
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PLKw = MAX_P * LKw,
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PLKw = MAX_P * LKw,
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PLw = MAX_P * Lw,
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PLw = MAX_P * Lw,
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PRAw = MAX_P * RAw; // {layer , Pos} width
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PRAw = MAX_P * RAw; // {layer , Pos} width
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function integer addrencode;
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function integer addrencode;
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input integer pos,k,n,kw;
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input integer pos,k,n,kw;
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integer pow,i,tmp;begin
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integer pow,i,tmp;begin
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addrencode=0;
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addrencode=0;
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pow=1;
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pow=1;
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for (i = 0; i
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for (i = 0; i
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tmp=(pos/pow);
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tmp=(pos/pow);
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tmp=tmp%k;
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tmp=tmp%k;
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tmp=tmp<
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tmp=tmp<
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addrencode=addrencode | tmp;
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addrencode=addrencode | tmp;
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pow=pow * k;
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pow=pow * k;
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end
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end
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end
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end
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endfunction
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endfunction
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wire [LKw-1 : 0] current_pos_addr [NR-1 :0];
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wire [LKw-1 : 0] current_pos_addr [NR-1 :0];
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wire [Lw-1 : 0] current_layer_addr [NR-1 :0];
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wire [Lw-1 : 0] current_layer_addr [NR-1 :0];
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wire [RAw-1 : 0] current_r_addr [NR-1 : 0];
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wire [RAw-1 : 0] current_r_addr [NR-1 : 0];
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//add roots
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//add roots
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genvar pos,level,port;
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genvar pos,level,port;
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generate
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generate
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for( pos=0; pos
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for( pos=0; pos
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localparam RID = pos;
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router_top # (
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router_top # (
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.P(K)
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.P(K)
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)
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)
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the_router
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the_router
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(
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(
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.current_r_addr (current_r_addr [pos]),
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.current_r_id (RID),
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.chan_in (router_chan_in [pos][K-1 : 0]),
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.current_r_addr (current_r_addr [RID]),
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.chan_out (router_chan_out[pos][K-1 : 0]),
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.chan_in (router_chan_in [RID][K-1 : 0]),
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.chan_out (router_chan_out[RID][K-1 : 0]),
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.router_event (router_event[RID][K-1 : 0]),
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.clk (clk ),
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.clk (clk ),
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.reset (reset )
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.reset (reset )
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);
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);
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end
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end
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//add leaves
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//add leaves
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for( level=1; level
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for( level=1; level
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for( pos=0; pos
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for( pos=0; pos
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localparam RID = NRL*level+pos;
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router_top # (
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router_top # (
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.P(2*K)
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.P(2*K)
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)
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)
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the_router
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the_router
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(
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(
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.current_r_addr (current_r_addr [NRL*level+pos]),
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.current_r_id (RID),
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.chan_in (router_chan_in [NRL*level+pos]),
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.current_r_addr (current_r_addr [RID]),
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.chan_out (router_chan_out[NRL*level+pos]),
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.chan_in (router_chan_in [RID]),
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.chan_out (router_chan_out[RID]),
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.router_event (router_event[RID]),
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.clk (clk ),
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.clk (clk ),
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.reset (reset )
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.reset (reset )
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);
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);
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end
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end
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end
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end
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//connect all down input chanels
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//connect all down input chanels
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localparam NPOS = powi( K, L-1);
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localparam NPOS = powi( K, L-1);
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localparam CHAN_PER_DIRECTION = (K * powi( L , L-1 )); //up or down
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localparam CHAN_PER_DIRECTION = (K * powi( L , L-1 )); //up or down
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localparam CHAN_PER_LEVEL = 2*(K * powi( K , L-1 )); //up+down
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localparam CHAN_PER_LEVEL = 2*(K * powi( K , L-1 )); //up+down
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for (level = 0; level
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for (level = 0; level
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/* verilator lint_off WIDTH */
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/* verilator lint_off WIDTH */
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localparam [Lw-1 : 0] LEAVE_L = L-1-level;
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localparam [Lw-1 : 0] LEAVE_L = L-1-level;
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/* verilator lint_on WIDTH */
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/* verilator lint_on WIDTH */
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//input chanel are numbered interleavely, the interleaev depends on level
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//input chanel are numbered interleavely, the interleaev depends on level
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localparam ROUTERS_PER_NEIGHBORHOOD = powi(K,L-1-(level));
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localparam ROUTERS_PER_NEIGHBORHOOD = powi(K,L-1-(level));
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localparam ROUTERS_PER_BRANCH = powi(K,L-1-(level+1));
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localparam ROUTERS_PER_BRANCH = powi(K,L-1-(level+1));
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localparam LEVEL_OFFSET = ROUTERS_PER_NEIGHBORHOOD*K;
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localparam LEVEL_OFFSET = ROUTERS_PER_NEIGHBORHOOD*K;
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for ( pos = 0; pos < NPOS; pos=pos+1 ) begin : pos_c
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for ( pos = 0; pos < NPOS; pos=pos+1 ) begin : pos_c
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localparam ADRRENCODED=addrencode(pos,K,L,Kw);
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localparam ADRRENCODED=addrencode(pos,K,L,Kw);
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localparam NEIGHBORHOOD = (pos/ROUTERS_PER_NEIGHBORHOOD);
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localparam NEIGHBORHOOD = (pos/ROUTERS_PER_NEIGHBORHOOD);
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localparam NEIGHBORHOOD_POS = pos % ROUTERS_PER_NEIGHBORHOOD;
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localparam NEIGHBORHOOD_POS = pos % ROUTERS_PER_NEIGHBORHOOD;
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for ( port = 0; port < K; port=port+1 ) begin : port_c
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for ( port = 0; port < K; port=port+1 ) begin : port_c
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localparam LINK =
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localparam LINK =
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((level+1)*CHAN_PER_LEVEL - CHAN_PER_DIRECTION) //which levellevel
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((level+1)*CHAN_PER_LEVEL - CHAN_PER_DIRECTION) //which levellevel
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+NEIGHBORHOOD* LEVEL_OFFSET //region in level
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+NEIGHBORHOOD* LEVEL_OFFSET //region in level
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+port*ROUTERS_PER_BRANCH*K //sub region in region
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+port*ROUTERS_PER_BRANCH*K //sub region in region
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+(NEIGHBORHOOD_POS)%ROUTERS_PER_BRANCH*K //router in subregion
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+(NEIGHBORHOOD_POS)%ROUTERS_PER_BRANCH*K //router in subregion
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+(NEIGHBORHOOD_POS)/ROUTERS_PER_BRANCH; //port on router
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+(NEIGHBORHOOD_POS)/ROUTERS_PER_BRANCH; //port on router
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localparam L2= (LINK+CHAN_PER_DIRECTION)/CHAN_PER_LEVEL;
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localparam L2= (LINK+CHAN_PER_DIRECTION)/CHAN_PER_LEVEL;
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localparam POS2 = ((LINK+CHAN_PER_DIRECTION) % CHAN_PER_LEVEL)/K;
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localparam POS2 = ((LINK+CHAN_PER_DIRECTION) % CHAN_PER_LEVEL)/K;
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localparam PORT2= (((LINK+CHAN_PER_DIRECTION) % CHAN_PER_LEVEL) %K)+K;
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localparam PORT2= (((LINK+CHAN_PER_DIRECTION) % CHAN_PER_LEVEL) %K)+K;
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localparam ID1 =NRL*level+pos;
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localparam ID1 =NRL*level+pos;
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localparam ID2 =NRL*L2 + POS2;
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localparam ID2 =NRL*L2 + POS2;
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localparam POS_ADR_CODE2= addrencode(POS2,K,L,Kw);
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localparam POS_ADR_CODE2= addrencode(POS2,K,L,Kw);
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localparam POS_ADR_CODE1= addrencode(pos,K,L,Kw);
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localparam POS_ADR_CODE1= addrencode(pos,K,L,Kw);
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// $dotfile=$dotfile.node_connection('R',$id1,undef,$port,'R',$connect_id,undef,$connect_port);
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// $dotfile=$dotfile.node_connection('R',$id1,undef,$port,'R',$connect_id,undef,$connect_port);
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assign router_chan_in [ID1][port ] = router_chan_out [ID2][PORT2];
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assign router_chan_in [ID1][port ] = router_chan_out [ID2][PORT2];
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assign router_chan_in [ID2][PORT2] = router_chan_out [ID1][port ];
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assign router_chan_in [ID2][PORT2] = router_chan_out [ID1][port ];
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assign current_layer_addr [ID1] = LEAVE_L;
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assign current_layer_addr [ID1] = LEAVE_L;
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assign current_pos_addr [ID1] = ADRRENCODED[LKw-1 :0];
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assign current_pos_addr [ID1] = ADRRENCODED[LKw-1 :0];
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assign current_r_addr [ID1] = {current_layer_addr [ID1],current_pos_addr[ID1]};
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assign current_r_addr [ID1] = {current_layer_addr [ID1],current_pos_addr[ID1]};
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if(level==L-2)begin
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if(level==L-2)begin
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assign current_layer_addr [ID2] ={Lw{1'b0}};
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assign current_layer_addr [ID2] ={Lw{1'b0}};
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assign current_pos_addr [ID2] = POS_ADR_CODE2[LKw-1 :0];
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assign current_pos_addr [ID2] = POS_ADR_CODE2[LKw-1 :0];
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assign current_r_addr [ID2] = {current_layer_addr [ID2],current_pos_addr[ID2]};
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assign current_r_addr [ID2] = {current_layer_addr [ID2],current_pos_addr[ID2]};
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end
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end
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end
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end
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end
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end
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end
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end
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for ( pos = 0; pos < NE; pos=pos+1 ) begin : endpoints
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for ( pos = 0; pos < NE; pos=pos+1 ) begin : endpoints
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localparam RID= NRL*(L-1)+(pos/K);
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localparam RID= NRL*(L-1)+(pos/K);
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localparam RPORT = pos%K;
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localparam RPORT = pos%K;
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//$dotfile=$dotfile.node_connection('T',$i,undef,undef,'R',$r,undef,$i%($k));
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//$dotfile=$dotfile.node_connection('T',$i,undef,undef,'R',$r,undef,$i%($k));
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assign router_chan_in [RID][RPORT] = chan_in_all [pos];
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assign router_chan_in [RID][RPORT] = chan_in_all [pos];
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assign chan_out_all [pos] = router_chan_out [RID][RPORT];
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assign chan_out_all [pos] = router_chan_out [RID][RPORT];
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end
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end
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endgenerate
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endgenerate
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endmodule
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endmodule
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