Subversion Repositories qaz_libs

//////////////////////////////////////////////////////////////////////

////                                                              ////

//// Copyright (C) 2015 Authors and OPENCORES.ORG                 ////

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//// This source file may be used and distributed without         ////

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//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

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//// This source file is free software; you can redistribute it   ////

//// and/or modify it under the terms of the GNU Lesser General   ////

//// Public License as published by the Free Software Foundation; ////

//// either version 2.1 of the License, or (at your option) any   ////

//// later version.                                               ////

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//// This source is distributed in the hope that it will be       ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////

//// PURPOSE.  See the GNU Lesser General Public License for more ////

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//// You should have received a copy of the GNU Lesser General    ////

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//////////////////////////////////////////////////////////////////////

package amm_transaction_pkg;

  // --------------------------------------------------------------------

  //

  class amm_delay_class;

    rand int unsigned delay;

    // --------------------------------------------------------------------

    //

    function int unsigned

      next;

      assert(this.randomize() with{delay dist {0 := 40, [1:3] := 40, [4:7] := 20};});

      return(delay);

    endfunction: next

  // --------------------------------------------------------------------

  //

  endclass: amm_delay_class

  // --------------------------------------------------------------------

  //

  class amm_payload_class #(N = 8, B = 1);

    rand logic [(8*N)-1:0]  w[];

    // --------------------------------------------------------------------

    //

    function

      new

      (

        logic [B-1:0] burstcount = 0

      );

      this.w  = new[burstcount + 1];

    endfunction: new

    // --------------------------------------------------------------------

    //

    function void

      random

      (

        logic [B-1:0] burstcount = 0

      );

      this.w = new[burstcount + 1];

      assert(this.randomize());

    endfunction: random

  // --------------------------------------------------------------------

  //

  endclass: amm_payload_class

  // --------------------------------------------------------------------

  //

  class amm_transaction_class #(A = 32, N = 8, B = 1);

    amm_delay_class delay_h;

    amm_payload_class #(.N(N), .B(B)) payload_h;

    amm_payload_class #(.N(N), .B(B)) data_h;

    rand logic  [(A-1):0]   address = 'bz;

    rand logic  [N-1:0]     byteenable = {N{1'b1}};

    rand logic  [B-1:0]     burstcount = 1;

    constraint default_burstcount

    {

      burstcount dist {0 := 40, [1:15] := 40, [16:255] := 20};

    }

    // --------------------------------------------------------------------

    //

    function

      new

      (

        logic [B-1:0] burstcount = 0

      );

      this.payload_h  = new(burstcount + 1);

      this.delay_h    = new;

    endfunction: new

    // --------------------------------------------------------------------

    //

    function void

      basic_random;

      assert(this.randomize() with

      {

        this.burstcount == 1;

      });

      this.payload_h.random(this.burstcount);

    endfunction: basic_random

    // // --------------------------------------------------------------------

    // //

    // function void

      // basic_random_burst;

      // assert(this.randomize() with

      // {

        // this.addr[$clog2(N*8)-1:0] == 0;

        // this.id == 0;

        // this.resp == 0;

        // this.burst == 2'b01;

        // this.size == $clog2(N);

        // this.len dist {0 := 40, [1:3] := 40, [4:15] := 20};

      // });

      // this.payload_h.random(this.len);

    // endfunction: basic_random_burst

    // --------------------------------------------------------------------

    //

    function void

      basic_read

      (

        logic [(A-1):0] address,

        logic [B-1:0] burstcount = 1

      );

      this.address = address;

      this.burstcount = burstcount;

      this.payload_h.random(burstcount);

    endfunction: basic_read

    // --------------------------------------------------------------------

    //

    function void

      basic_write

      (

        logic [(A-1):0] address,

        logic [B-1:0] burstcount = 1

      );

      this.address = address;

      this.burstcount = burstcount;

      this.payload_h.random(burstcount);

    endfunction: basic_write

    // --------------------------------------------------------------------

    //

    function void copy

    (

      amm_transaction_class #(.A(A), .N(N), .B(B)) from

    );

      this.address    = from.address;

      this.byteenable = from.byteenable;

      this.burstcount = from.burstcount;

    endfunction: copy

    // --------------------------------------------------------------------

    //

    virtual function amm_transaction_class #(.A(A), .N(N), .B(B)) clone;

      clone = new();

      clone.copy(this);

      return(clone);

    endfunction: clone

  // --------------------------------------------------------------------

  //

  endclass: amm_transaction_class

// --------------------------------------------------------------------

//

endpackage: amm_transaction_pkg