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//
// Copyright 2013 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: LGPL-3.0-or-later
//
`timescale 1ns/1ps
module axi_fifo_32_64_tb();
reg clk = 0;
reg reset = 1;
always #10 clk = ~clk;
initial $dumpfile("axi_fifo_32_64_tb.vcd");
initial $dumpvars(0,axi_fifo_32_64_tb);
task send_packet;
input [63:0] data_start;
input [2:0] user;
input [31:0] len;
begin
@(posedge clk);
{i_tuser, i_tlast, i_tdata} <= { 3'd0, 1'b0, data_start };
repeat(len-1)
begin
i_tvalid <= 1;
@(posedge clk);
i_tdata <= i_tdata + 64'h0000_0002_0000_0002;
end
i_tuser <= user;
i_tlast <= 1;
@(posedge clk);
i_tvalid <= 1'b0;
@(posedge clk);
end
endtask // send_packet
initial
begin
#1000 reset = 0;
#200000;
$finish;
end
reg [63:0] i_tdata;
reg [2:0] i_tuser;
reg i_tlast;
reg i_tvalid;
wire i_tready;
wire [63:0] i_tdata_int;
wire [2:0] i_tuser_int;
wire i_tlast_int, i_tvalid_int, i_tready_int;
wire [63:0] o_tdata;
wire [31:0] o_tdata_int, o_tdata_int2;
wire [2:0] o_tuser;
wire [1:0] o_tuser_int, o_tuser_int2;
wire o_tlast, o_tlast_int, o_tvalid, o_tvalid_int, o_tready, o_tready_int;
wire o_tlast_int2, o_tvalid_int2, o_tready_int2;
localparam RPT_COUNT = 16;
initial
begin
i_tvalid <= 0;
while(reset)
@(posedge clk);
@(posedge clk);
send_packet(64'hA0000000_A0000001, 3'd7, 4);
@(posedge clk);
end // initial begin
axi_fifo #(.WIDTH(68), .SIZE(10)) fifo
(.clk(clk), .reset(reset), .clear(1'b0),
.i_tdata({i_tlast,i_tuser,i_tdata}), .i_tvalid(i_tvalid), .i_tready(i_tready),
.o_tdata({i_tlast_int,i_tuser_int,i_tdata_int}), .o_tvalid(i_tvalid_int), .o_tready(i_tready_int));
axi_fifo64_to_fifo32 dut
(.clk(clk), .reset(reset), .clear(1'b0),
.i_tdata(i_tdata_int), .i_tuser(i_tuser_int), .i_tlast(i_tlast_int), .i_tvalid(i_tvalid_int), .i_tready(i_tready_int),
.o_tdata(o_tdata_int), .o_tuser(o_tuser_int), .o_tlast(o_tlast_int), .o_tvalid(o_tvalid_int), .o_tready(o_tready_int));
/*
axi_fifo #(.WIDTH(35), .SIZE(10)) fifo_middle
(.clk(clk), .reset(reset), .clear(1'b0),
.i_tdata({o_tlast_int,o_tuser_int,o_tdata_int}), .i_tvalid(o_tvalid_int), .i_tready(o_tready_int),
.o_tdata({o_tlast_int2,o_tuser_int2,o_tdata_int2}), .o_tvalid(o_tvalid_int2), .o_tready(o_tready_int2));
*/
assign o_tdata_int2 = o_tdata_int;
assign o_tlast_int2 = o_tlast_int;
assign o_tuser_int2 = o_tuser_int;
assign o_tvalid_int2 = o_tvalid_int;
assign o_tready_int = o_tready_int2;
axi_fifo32_to_fifo64 dut2
(.clk(clk), .reset(reset), .clear(1'b0),
.i_tdata(o_tdata_int2), .i_tuser(o_tuser_int2), .i_tlast(o_tlast_int2), .i_tvalid(o_tvalid_int2), .i_tready(o_tready_int2),
.o_tdata(o_tdata), .o_tuser(o_tuser), .o_tlast(o_tlast), .o_tvalid(o_tvalid), .o_tready(o_tready));
assign o_tready = 1'b1;
always @(posedge clk)
if(i_tvalid & i_tready)
$display("IN: TUSER %x\tTLAST %x\tTDATA %x", i_tuser, i_tlast, i_tdata);
always @(posedge clk)
if(o_tvalid_int & o_tready_int)
$display("\t\t\t\t\t\tMIDDLE: TUSER %x\tTLAST %x\tTDATA %x", o_tuser_int, o_tlast_int, o_tdata_int);
always @(posedge clk)
if(o_tvalid & o_tready)
$display("\t\t\t\t\t\t\t\t\t\t\tOUT: TUSER %x\tTLAST %x\tTDATA %x", o_tuser, o_tlast, o_tdata);
endmodule // axi_fifo_32_64_tb
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