Subversion Repositories qaz_libs

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

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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

        {<

        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