Subversion Repositories qaz_libs

//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2019 Authors and OPENCORES.ORG                 ////
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//// This source file may be used and distributed without         ////
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//// This source file is free software; you can redistribute it   ////
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//////////////////////////////////////////////////////////////////////

class riffa_rp_tx_driver #(N) extends uvm_driver #(riffa_sequence_item);
  `uvm_component_param_utils(riffa_rp_tx_driver #(N))

  // --------------------------------------------------------------------
  virtual riffa_chnl_if #(N) vif;

  //--------------------------------------------------------------------
  function void set_default;
    vif.cb_rp_tx.rx <= 0;
    vif.cb_rp_tx.rx_last <= 'bx;
    vif.cb_rp_tx.rx_len <= 'bx;
    vif.cb_rp_tx.rx_off <= 'bx;
    vif.cb_rp_tx.rx_data <= 'bx;
    vif.cb_rp_tx.rx_data_valid <= 0;
  endfunction: set_default

  //--------------------------------------------------------------------
  virtual task run_phase(uvm_phase phase);
    riffa_sequence_item item;
    reg [(8*N)-1:0] rx_data;
    super.run_phase(phase);

    set_default();

    forever
    begin
      wait(~vif.rx_reset);
      seq_item_port.get_next_item(item);

      @(vif.cb_rp_tx);
      vif.cb_rp_tx.rx_len <= item.len;  // must be => 4
      vif.cb_rp_tx.rx_off <= item.off;
      vif.cb_rp_tx.rx_last <= item.last;
      vif.cb_rp_tx.rx <= 1;

      @(vif.cb_rp_tx iff vif.cb_rp_tx.rx_ack);
      vif.cb_rp_tx.rx_data_valid <= 1;

      for(int i = 0; i < item.beats; i++)
      begin
        {<<byte{rx_data}} = item.data[i*N +: N];
        vif.cb_rp_tx.rx_data <= rx_data;
        @(vif.cb_rp_tx iff vif.cb_rp_tx.rx_data_ren);
        // $display("^^^^^ %16.t | RX | %d | %h", $time, i, vif.cb_rp_tx.rx_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