Subversion Repositories qaz_libs

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//// Copyright (C) 2015 Authors and OPENCORES.ORG                 ////
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package axi4_lite_agent_pkg;

  // --------------------------------------------------------------------
  //
  import axi4_transaction_pkg::*;


  // --------------------------------------------------------------------
  //
  class axi4_lite_agent_class #(A = 32, N = 8, I = 1, MW = 3);

    axi4_transaction_class        #(.A(A), .N(N), .I(I))  tr_h;
    virtual axi4_master_bfm_if    #(.A(A), .N(N), .I(I))  axi4_m;
    virtual axi4_lite_register_if #(.N(N), .MW(MW))       r_if;


    //--------------------------------------------------------------------
    localparam LB = (N == 8) ? 3 : 2;
    localparam UB = LB + MW - 1;


    //--------------------------------------------------------------------
    function new
      (
        virtual axi4_master_bfm_if    #(.A(A), .N(N), .I(I))  axi4_m,
        virtual axi4_lite_register_if #(.N(N), .MW(MW))       r_if
      );

      this.axi4_m = axi4_m;
      this.r_if   = r_if;

    endfunction: new


    // --------------------------------------------------------------------
    //
    task
      basic_read
      (
        input   logic [(A-1):0]   araddr,
        output  logic [(8*N)-1:0] data[],
        output  logic [1:0]       rresp
      );

      this.tr_h = new;
      this.tr_h.basic_read(araddr);

      axi4_m.ar_h.put(tr_h);
      axi4_m.r_h.put(tr_h);

      @(axi4_m.r_h.done);
      data = tr_h.data_h.w;
      rresp = tr_h.resp;

    endtask: basic_read


    // --------------------------------------------------------------------
    //
    task
      basic_write
      (
        input   logic [(A-1):0]   awaddr,
        input   logic [(8*N)-1:0] data[],
        output  logic [1:0]       bresp
      );

      this.tr_h = new;
      this.tr_h.basic_write(awaddr);

      foreach(this.tr_h.payload_h.w[i])
        this.tr_h.payload_h.w[i] = data[i];

      axi4_m.aw_h.put(tr_h);
      axi4_m.w_h.put(tr_h);
      axi4_m.b_h.put(tr_h);

    endtask: basic_write


    // --------------------------------------------------------------------
    //
    task
      basic_random_write
      (
        input   logic [(A-1):0]   awaddr,
        output  logic [1:0]       bresp
      );

      this.tr_h = new;
      this.tr_h.basic_write(awaddr);

      axi4_m.aw_h.put(tr_h);
      axi4_m.w_h.put(tr_h);
      axi4_m.b_h.put(tr_h);

      @(axi4_m.b_h.done);

      if(r_if.register_out[awaddr[UB:LB]] == this.tr_h.payload_h.w[0])
        $display("^^^ %16.t | @0x%08x | PASS!!!", $time, awaddr);
      else
        $display("^^^ %16.t | @0x%08x | FAIL!!!", $time, awaddr);

    endtask: basic_random_write


    // --------------------------------------------------------------------
    //
    function void
      init;

    endfunction: init


  // --------------------------------------------------------------------
  //
  endclass: axi4_lite_agent_class


// --------------------------------------------------------------------
//
endpackage: axi4_lite_agent_pkg