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[/] [qaz_libs/] [trunk/] [BFM/] [src/] [axis_video_frame/] [avf_master_driver.svh] - Rev 49

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//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2018 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 avf_master_driver #(N, U)
  extends uvm_driver #(avf_sequence_item);
   `uvm_component_param_utils(avf_master_driver #(N, U))

  // --------------------------------------------------------------------
  virtual axis_if #(.N(N), .U(U)) vif;
  video_frame_class f_h;

  //--------------------------------------------------------------------
  function void set_default;
    vif.cb_m.tvalid <= 0;
    vif.cb_m.tdata  <= 'x;
    vif.cb_m.tstrb  <= {N{1'b1}};
    vif.cb_m.tkeep  <= {N{1'b1}};
    vif.cb_m.tlast  <= 'x;
    vif.cb_m.tid    <= 0;
    vif.cb_m.tdest  <= 0;
    vif.cb_m.tuser  <= 'x;
  endfunction: set_default

  //--------------------------------------------------------------------
  virtual task run_phase(uvm_phase phase);
    avf_sequence_item item;
    logic [(8*N)-1:0] tdata;
    int offset;

    super.run_phase(phase);

    set_default();

    forever
    begin
      wait(vif.aresetn);
      seq_item_port.get_next_item(item);

      while(item.frame_buffer.try_get(f_h))
      begin
        vif.zero_cycle_delay();
        repeat(item.delay_h.get(item.sof_delay))
          @(vif.cb_m);
        vif.cb_m.tvalid <= 1;

        foreach(f_h.lines[l])
          for(int p = 0; p < f_h.pixels_per_line; p += f_h.pixels_per_clk)
          begin
            if(l == 0 && p == 0)
              vif.cb_m.tuser[0] <= 1;
            else
              vif.cb_m.tuser[0] <= 0;

            if(p == 0)
              vif.cb_m.tuser[1] <= 1;
            else
              vif.cb_m.tuser[1] <= 0;

            if(p + f_h.pixels_per_clk >= f_h.pixels_per_line && l + 1 >= f_h.lines_per_frame)
              vif.cb_m.tuser[2] <= 1;
            else
              vif.cb_m.tuser[2] <= 0;

            if(p + f_h.pixels_per_clk >= f_h.pixels_per_line)
              vif.cb_m.tlast <= 1;
            else
              vif.cb_m.tlast <= 0;

            for(int i = 0; i < f_h.pixels_per_clk; i++)
            begin
              offset = i * f_h.bytes_per_pixel * 8;
              for(int k = 0; k < f_h.bytes_per_pixel; k++)
                tdata[offset + (k * 8) +: 8] = f_h.lines[l].pixel[p + i][k * 8 +: 8];
            end

            vif.cb_m.tdata <= tdata;
            @(vif.cb_m iff vif.cb_m.tready);

            vif.cb_m.tvalid <= 0;
            repeat(item.get_delay(vif.cb_s.tlast, vif.cb_s.tuser[2]))
              @(vif.cb_m);
            vif.cb_m.tvalid <= 1;
          end

        vif.cb_m.tuser[2] <= 0;
        vif.cb_m.tlast    <= 0;
        vif.cb_m.tvalid   <= 0;
      end

      seq_item_port.item_done();
    end
  endtask : run_phase

  //--------------------------------------------------------------------
  function new(string name, uvm_component parent);
    super.new(name, parent);
  endfunction

// --------------------------------------------------------------------
endclass : avf_master_driver

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