Subversion Repositories qaz_libs

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

////                                                              ////

//// Copyright (C) 2019 Authors and OPENCORES.ORG                 ////

////                                                              ////

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

//// restriction provided that this copyright statement is not    ////

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

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

////                                                              ////

//// 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.                                               ////

////                                                              ////

//// 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 ////

//// details.                                                     ////

////                                                              ////

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

//// Public License along with this source; if not, download it   ////

//// from http://www.opencores.org/lgpl.shtml                     ////

////                                                              ////

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

class riffa_rp_rx_driver #(N) extends uvm_driver #(riffa_sequence_item);

  `uvm_component_param_utils(riffa_rp_rx_driver #(N))

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

  virtual riffa_chnl_if #(N) vif;

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

  function void set_default;

    vif.cb_rp_rx.tx_ack <= 0;

    vif.cb_rp_rx.tx_data_ren <= 0;

  endfunction: set_default

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

  virtual task run_phase(uvm_phase phase);

    riffa_sequence_item item;

    super.run_phase(phase);

    set_default();

    forever

    begin

      wait(~vif.tx_reset);

      seq_item_port.get_next_item(item);

      @(vif.cb_rp_rx iff vif.cb_rp_rx.tx);

      item.init( N

               , vif.cb_rp_rx.tx_len

               , vif.cb_rp_rx.tx_off

               , vif.cb_rp_rx.tx_last);

      vif.cb_rp_rx.tx_ack <= 1;

      vif.cb_rp_rx.tx_data_ren <= 1;

      fork

        @(vif.cb_rp_rx)

          vif.cb_rp_rx.tx_ack <= 0;

      join_none

      for(int i = 0; i < item.beats; i++)

      begin

        @(vif.cb_rp_rx iff vif.cb_rp_rx.tx_data_valid)

          {<

        // $display("^^^^^ %16.t | TX | %d | %h", $time, i, vif.cb_rp_rx.tx_data);

      end

      set_default();

      seq_item_port.item_done();

    end

  endtask : run_phase

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

  function new(string name, uvm_component parent);

    super.new(name, parent);

  endfunction

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

endclass