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qaztronic |
//////////////////////////////////////////////////////////////////////
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//// ////
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//// Copyright (C) 2018 Authors and OPENCORES.ORG ////
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//// ////
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//// This source file may be used and distributed without ////
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//// restriction provided that this copyright statement is not ////
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//// removed from the file and that any derivative work contains ////
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//// the original copyright notice and the associated disclaimer. ////
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//// ////
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//// This source file is free software; you can redistribute it ////
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//// and/or modify it under the terms of the GNU Lesser General ////
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//// Public License as published by the Free Software Foundation; ////
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//// either version 2.1 of the License, or (at your option) any ////
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//// later version. ////
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//// ////
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//// This source is distributed in the hope that it will be ////
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//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
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//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
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//// PURPOSE. See the GNU Lesser General Public License for more ////
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//// details. ////
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//// ////
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//// You should have received a copy of the GNU Lesser General ////
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//// Public License along with this source; if not, download it ////
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//// from http://www.opencores.org/lgpl.shtml ////
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//// ////
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//////////////////////////////////////////////////////////////////////
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class avf_master_driver #(N, U)
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extends uvm_driver #(avf_sequence_item);
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`uvm_component_param_utils(avf_master_driver #(N, U))
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// --------------------------------------------------------------------
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virtual axis_if #(.N(N), .U(U)) vif;
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video_frame_class f_h;
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//--------------------------------------------------------------------
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function void set_default;
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vif.cb_m.tvalid <= 0;
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vif.cb_m.tdata <= 'x;
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vif.cb_m.tstrb <= {N{1'b1}};
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vif.cb_m.tkeep <= {N{1'b1}};
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vif.cb_m.tlast <= 'x;
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vif.cb_m.tid <= 0;
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vif.cb_m.tdest <= 0;
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vif.cb_m.tuser <= 'x;
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endfunction: set_default
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//--------------------------------------------------------------------
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virtual task run_phase(uvm_phase phase);
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avf_sequence_item item;
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logic [(8*N)-1:0] tdata;
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int offset;
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super.run_phase(phase);
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set_default();
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forever
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begin
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wait(vif.aresetn);
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seq_item_port.get_next_item(item);
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while(item.frame_buffer.try_get(f_h))
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begin
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vif.zero_cycle_delay();
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repeat(item.delay_h.get(item.sof_delay))
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@(vif.cb_m);
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vif.cb_m.tvalid <= 1;
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foreach(f_h.lines[l])
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for(int p = 0; p < f_h.pixels_per_line; p += f_h.pixels_per_clk)
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begin
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if(l == 0 && p == 0)
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vif.cb_m.tuser[0] <= 1;
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else
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vif.cb_m.tuser[0] <= 0;
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if(p == 0)
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vif.cb_m.tuser[1] <= 1;
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else
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vif.cb_m.tuser[1] <= 0;
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if(p + f_h.pixels_per_clk >= f_h.pixels_per_line && l + 1 >= f_h.lines_per_frame)
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vif.cb_m.tuser[2] <= 1;
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else
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vif.cb_m.tuser[2] <= 0;
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if(p + f_h.pixels_per_clk >= f_h.pixels_per_line)
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vif.cb_m.tlast <= 1;
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else
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vif.cb_m.tlast <= 0;
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for(int i = 0; i < f_h.pixels_per_clk; i++)
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begin
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offset = i * f_h.bytes_per_pixel * 8;
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for(int k = 0; k < f_h.bytes_per_pixel; k++)
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tdata[offset + (k * 8) +: 8] = f_h.lines[l].pixel[p + i][k * 8 +: 8];
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end
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vif.cb_m.tdata <= tdata;
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@(vif.cb_m iff vif.cb_m.tready);
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vif.cb_m.tvalid <= 0;
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repeat(item.get_delay(vif.cb_s.tlast, vif.cb_s.tuser[2]))
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@(vif.cb_m);
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vif.cb_m.tvalid <= 1;
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end
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vif.cb_m.tuser[2] <= 0;
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vif.cb_m.tlast <= 0;
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vif.cb_m.tvalid <= 0;
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end
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seq_item_port.item_done();
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end
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endtask : run_phase
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//--------------------------------------------------------------------
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function new(string name, uvm_component parent);
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super.new(name, parent);
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endfunction
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// --------------------------------------------------------------------
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endclass : avf_master_driver
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