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/////////////////////////////////////////////////////////////////////
//
// Copyright 2016-2017 Ettus Research
//
// Arm Deframer Testbench
//
// Arm Deframer adds a 6 bit padding to the ethernet frame
//
//////////////////////////////////////////////////////////////////////
`timescale 1ns/1ps
`define SIM_RUNTIME_US 0.0001
`define NS_PER_TICK 1
`define NUM_TEST_CASES 3
`include "sim_axis_lib.svh"
`include "sim_exec_report.vh"
`include "sim_set_rb_lib.svh"
`include "sim_clks_rsts.vh"
// NOTE: The tesbench is not self-checking
module arm_deframer_tb();
`TEST_BENCH_INIT("arm_deframer_tb",`NUM_TEST_CASES,`NS_PER_TICK);
localparam CLK_PERIOD = $ceil(1e6/166.67e6);
`DEFINE_CLK(clk, CLK_PERIOD, 50);
`DEFINE_RESET(rst, 0, 100);
axis_master #(.DWIDTH(68)) m_axis (.clk(clk));
axis_slave #(.DWIDTH(68)) s_axis (.clk(clk));
reg clear;
wire [63:0] c2e_tdata_int;
wire [3:0] c2e_tuser_int;
wire c2e_tlast_int;
wire c2e_tvalid_int;
wire c2e_tready_int;
arm_deframer inst_arm_deframer (
.clk (clk),
.reset (rst),
.clear (clear),
.s_axis_tdata (m_axis.axis.tdata[63:0]),
.s_axis_tuser (m_axis.axis.tdata[67:64]),
.s_axis_tlast (m_axis.axis.tlast),
.s_axis_tvalid (m_axis.axis.tvalid),
.s_axis_tready (m_axis.axis.tready),
.m_axis_tdata (c2e_tdata_int),
.m_axis_tuser (c2e_tuser_int),
.m_axis_tlast (c2e_tlast_int),
.m_axis_tvalid (c2e_tvalid_int),
.m_axis_tready (c2e_tready_int)
);
axi_mux4 #(.PRIO(0), .WIDTH(68)) eth_mux
(.clk(clk), .reset(reset), .clear(clear),
.i0_tdata({c2e_tuser_int,c2e_tdata_int}), .i0_tlast(c2e_tlast_int), .i0_tvalid(c2e_tvalid_int), .i0_tready(c2e_tready_int),
.i1_tdata(), .i1_tlast(), .i1_tvalid(), .i1_tready(),
.i2_tdata(), .i2_tlast(), .i2_tvalid(), .i2_tready(),
.i3_tdata(), .i3_tlast(), .i3_tvalid(1'b0), .i3_tready(),
.o_tdata(s_axis.axis.tdata), .o_tlast(s_axis.axis.tlast), .o_tvalid(s_axis.axis.tvalid), .o_tready(1'b1/*s_axis.axis.tready*/));
reg [63:0] out_tdata;
reg [3:0] tuser;
reg tlast;
initial begin
forever begin
s_axis.pull_word({tuser,out_tdata}, tlast);
$display("tuser = %d, out_tdata = %x, last = %d", tuser, out_tdata, tlast);
end
end
initial begin : tb_main
`TEST_CASE_START("Wait for reset");
m_axis.reset;
while (rst) @(posedge clk);
`TEST_CASE_DONE(~rst);
`TEST_CASE_START("Send frame");
repeat (10) @(posedge clk);
for (int j = 0; j < 2; j ++) begin
@(posedge clk);
$display("----------New Frame---------------");
for (int i = 0; i < 9; i ++) begin
m_axis.push_word({4'h0,64'h1111111111111111 * i}, 1'b0);
//m_axis.push_bubble();
end
m_axis.push_word({4'h1,64'h9999999999999999}, 1'b1);
//m_axis.push_bubble();
end
@(posedge clk);
@(posedge clk);
`TEST_CASE_DONE(1);
repeat (10) @(posedge clk);
`TEST_CASE_START("Send frame with bubble");
repeat (10) @(posedge clk);
for (int j = 0; j < 2; j ++) begin
@(posedge clk);
$display("----------New Frame---------------");
for (int i = 0; i < 9; i ++) begin
m_axis.push_word({4'h0,64'h1111111111111111 * i}, 1'b0);
m_axis.push_bubble();
end
m_axis.push_word({4'h1,64'h9999999999999999}, 1'b1);
m_axis.push_bubble();
end
@(posedge clk);
@(posedge clk);
`TEST_CASE_DONE(1);
`TEST_BENCH_DONE;
end
endmodule
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