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`include "pronoc_def.v"

/**************************************

 * Module: tree

 * Date:2019-01-01

 * Author: alireza

 *

 *

Description:

    Star

 ***************************************/

module  star_noc_top #(

        parameter NOC_ID=0

) (

                reset,

                clk,

                chan_in_all,

                chan_out_all,

                router_event

        );

        `NOC_CONF

        input   clk,reset;

        //Endpoints ports

        input   smartflit_chanel_t chan_in_all  [NE-1 : 0];

        output  smartflit_chanel_t chan_out_all [NE-1 : 0];

        //Events

        output  router_event_t  router_event [NR-1 : 0][MAX_P-1 : 0];

            router_top # (

                        .NOC_ID(NOC_ID),

                        .P(NE)

                )

                the_router

                (

                        .current_r_id    (0),

                        .current_r_addr  (1'b0),

                        .chan_in         (chan_in_all),

                        .chan_out        (chan_out_all),

                        .router_event    (router_event[0]),

                        .clk             (clk            ),

                        .reset           (reset          )

                );

endmodule

module star_conventional_routing #(

                parameter NE                = 8

                )

                (

                dest_e_addr,

                destport

);

        function integer log2;

                input integer number; begin

                        log2=(number <=1) ? 1: 0;

                        while(2**log2

                                log2=log2+1;

                        end

                end

        endfunction // log2

        localparam EAw = log2(NE);

        input   [EAw-1   :0] dest_e_addr;

        output  [EAw-1   :0] destport;

        // the destination endpoint address & connection port number are the same in star topology

        assign destport = dest_e_addr;

endmodule