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URL https://opencores.org/ocsvn/ethmac10g/ethmac10g/trunk

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/trunk/bench/Receive_tb.v
0,0 → 1,605
/*-------------------------------------------------------------------------------
-- $Revision: 1.1 $ $Date: 2006-06-11 11:53:36 $
-- Title : Demo testbench
-- Project : 10 Gigabit Ethernet MAC
-------------------------------------------------------------------------------
-- File : Receive_tb.v
-------------------------------------------------------------------------------
-- Description: This testbench will exercise the ports of the MAC core to
-- demonstrate the functionality.
-------------------------------------------------------------------------------
-- Codes are mainly from Xilinx's testbench.
-------------------------------------------------------------------------------
--
-- This testbench performs the following operations on the MAC core:
-- - The clock divide register is set for MIIM operation. */
/* - The clientXGMII port is wired as a loopback, so that transmitted frames
-- are then injected into the receiver.
-- - Four frames are pushed into the receiver. The first is a minimum
-- length frame, the second is slightly longer, the third has an error
-- asserted and the fourth is less than minimum length and is padded
-- up to the minimum.
-- - These frames are then looped back and sent out by the transmitter.
-- */
`timescale 1ps / 1ps
 
 
module frame_typ;
// This module abstracts the frame data for simpler manipulation
reg [31:0] data [0:31];
reg [ 3:0] ctrl [0:31];
reg [31:0] crc;
reg underrun;
 
`define FRAME_TYP [32*32+32*4+32+1:1]
 
reg `FRAME_TYP bits;
 
function `FRAME_TYP tobits;
input dummy;
begin
bits = {data[ 0], data[ 1], data[ 2], data[ 3], data[ 4],
data[ 5], data[ 6], data[ 7], data[ 8], data[ 9],
data[10], data[11], data[12], data[13], data[14],
data[15], data[16], data[17], data[18], data[19],
data[20], data[21], data[22], data[23], data[24],
data[25], data[26], data[27], data[28], data[29],
data[30], data[31], ctrl[ 0], ctrl[ 1], ctrl[ 2],
ctrl[ 3], ctrl[ 4], ctrl[ 5], ctrl[ 6], ctrl[ 7],
ctrl[ 8], ctrl[ 9], ctrl[10], ctrl[11], ctrl[12],
ctrl[13], ctrl[14], ctrl[15], ctrl[16], ctrl[17],
ctrl[18], ctrl[19], ctrl[20], ctrl[21], ctrl[22],
ctrl[23], ctrl[24], ctrl[25], ctrl[26], ctrl[27],
ctrl[28], ctrl[29], ctrl[30], ctrl[31], crc, underrun};
tobits = bits;
end
endfunction // tobits
 
task frombits;
input `FRAME_TYP frame;
begin
bits = frame;
{data[ 0], data[ 1], data[ 2], data[ 3], data[ 4], data[ 5],
data[ 6], data[ 7], data[ 8], data[ 9], data[10], data[11],
data[12], data[13], data[14], data[15], data[16], data[17],
data[18], data[19], data[20], data[21], data[22], data[23],
data[24], data[25], data[26], data[27], data[28], data[29],
data[30], data[31], ctrl[ 0], ctrl[ 1], ctrl[ 2], ctrl[ 3],
ctrl[ 4], ctrl[ 5], ctrl[ 6], ctrl[ 7], ctrl[ 8], ctrl[ 9],
ctrl[10], ctrl[11], ctrl[12], ctrl[13], ctrl[14], ctrl[15],
ctrl[16], ctrl[17], ctrl[18], ctrl[19], ctrl[20], ctrl[21],
ctrl[22], ctrl[23], ctrl[24], ctrl[25], ctrl[26], ctrl[27],
ctrl[28], ctrl[29], ctrl[30], ctrl[31], crc, underrun} = bits;
end
endtask // frombits
endmodule // frame_typ
 
 
// Address of management configuration register
`define CONFIG_MANAGEMENT 9'b101000000
// Address of flow control configuration register
`define CONFIG_FLOW_CTRL 9'b011000000
// addresses of statistics registers
`define STATS_TX_OK 9'b000100000
`define STATS_TX_UNDERRUN 9'b000100011
`define STATS_RX_OK 9'b000000000
`define STATS_RX_FCS_ERR 9'b000000001
`define MIN_FRAME_DATA_BYTES 60
 
module testbench;
 
// Frame data....
frame_typ frame0();
frame_typ frame1();
frame_typ frame2();
frame_typ frame3();
 
frame_typ tx_stimulus_working_frame();
frame_typ tx_monitor_working_frame();
frame_typ rx_stimulus_working_frame();
frame_typ rx_monitor_working_frame();
 
// Store the frame data etc....
initial
begin
// Frame 0...
frame0.data[0] = 32'h04030201;
frame0.data[1] = 32'h02020605;
frame0.data[2] = 32'h06050403;
frame0.data[3] = 32'h55AA2E00;
frame0.data[4] = 32'hAA55AA55;
frame0.data[5] = 32'h55AA55AA;
frame0.data[6] = 32'hAA55AA55;
frame0.data[7] = 32'h55AA55AA;
frame0.data[8] = 32'hAA55AA55;
frame0.data[9] = 32'h55AA55AA;
frame0.data[10] = 32'hAA55AA55;
frame0.data[11] = 32'h55AA55AA;
frame0.data[12] = 32'hAA55AA55;
frame0.data[13] = 32'h55AA55AA;
frame0.data[14] = 32'hAA55AA55;
frame0.data[15] = 32'h00000000;
frame0.data[16] = 32'h00000000;
frame0.data[17] = 32'h00000000;
frame0.data[18] = 32'h00000000;
frame0.data[19] = 32'h00000000;
frame0.data[20] = 32'h00000000;
frame0.data[21] = 32'h00000000;
frame0.data[22] = 32'h00000000;
frame0.data[23] = 32'h00000000;
frame0.data[24] = 32'h00000000;
frame0.data[25] = 32'h00000000;
frame0.data[26] = 32'h00000000;
frame0.data[27] = 32'h00000000;
frame0.data[28] = 32'h00000000;
frame0.data[29] = 32'h00000000;
frame0.data[30] = 32'h00000000;
frame0.data[31] = 32'h00000000;
frame0.ctrl[0] = 4'b1111;
frame0.ctrl[1] = 4'b1111;
frame0.ctrl[2] = 4'b1111;
frame0.ctrl[3] = 4'b1111;
frame0.ctrl[4] = 4'b1111;
frame0.ctrl[5] = 4'b1111;
frame0.ctrl[6] = 4'b1111;
frame0.ctrl[7] = 4'b1111;
frame0.ctrl[8] = 4'b1111;
frame0.ctrl[9] = 4'b1111;
frame0.ctrl[10] = 4'b1111;
frame0.ctrl[11] = 4'b1111;
frame0.ctrl[12] = 4'b1111;
frame0.ctrl[13] = 4'b1111;
frame0.ctrl[14] = 4'b1111;
frame0.ctrl[15] = 4'b0000;
frame0.ctrl[16] = 4'b0000;
frame0.ctrl[17] = 4'b0000;
frame0.ctrl[18] = 4'b0000;
frame0.ctrl[19] = 4'b0000;
frame0.ctrl[20] = 4'b0000;
frame0.ctrl[21] = 4'b0000;
frame0.ctrl[22] = 4'b0000;
frame0.ctrl[23] = 4'b0000;
frame0.ctrl[24] = 4'b0000;
frame0.ctrl[25] = 4'b0000;
frame0.ctrl[26] = 4'b0000;
frame0.ctrl[27] = 4'b0000;
frame0.ctrl[28] = 4'b0000;
frame0.ctrl[29] = 4'b0000;
frame0.ctrl[30] = 4'b0000;
frame0.ctrl[31] = 4'b0000;
frame0.crc = 32'h0D4820F6;
frame0.underrun = 1'b0;
// Frame 1
frame1.data[0] = 32'h03040506;
frame1.data[1] = 32'h05060102;
frame1.data[2] = 32'h02020304;
frame1.data[3] = 32'hEE110080;
frame1.data[4] = 32'h11EE11EE;
frame1.data[5] = 32'hEE11EE11;
frame1.data[6] = 32'h11EE11EE;
frame1.data[7] = 32'hEE11EE11;
frame1.data[8] = 32'h11EE11EE;
frame1.data[9] = 32'hEE11EE11;
frame1.data[10] = 32'h11EE11EE;
frame1.data[11] = 32'hEE11EE11;
frame1.data[12] = 32'h11EE11EE;
frame1.data[13] = 32'hEE11EE11;
frame1.data[14] = 32'h11EE11EE;
frame1.data[15] = 32'hEE11EE11;
frame1.data[16] = 32'h11EE11EE;
frame1.data[17] = 32'hEE11EE11;
frame1.data[18] = 32'h11EE11EE;
frame1.data[19] = 32'hEE11EE11;
frame1.data[20] = 32'h11EE11EE;
frame1.data[21] = 32'h0000EE11;
frame1.data[22] = 32'h00000000;
frame1.data[23] = 32'h00000000;
frame1.data[24] = 32'h00000000;
frame1.data[25] = 32'h00000000;
frame1.data[26] = 32'h00000000;
frame1.data[27] = 32'h00000000;
frame1.data[28] = 32'h00000000;
frame1.data[29] = 32'h00000000;
frame1.data[30] = 32'h00000000;
frame1.data[31] = 32'h00000000;
 
frame1.ctrl[0] = 4'b1111;
frame1.ctrl[1] = 4'b1111;
frame1.ctrl[2] = 4'b1111;
frame1.ctrl[3] = 4'b1111;
frame1.ctrl[4] = 4'b1111;
frame1.ctrl[5] = 4'b1111;
frame1.ctrl[6] = 4'b1111;
frame1.ctrl[7] = 4'b1111;
frame1.ctrl[8] = 4'b1111;
frame1.ctrl[9] = 4'b1111;
frame1.ctrl[10] = 4'b1111;
frame1.ctrl[11] = 4'b1111;
frame1.ctrl[12] = 4'b1111;
frame1.ctrl[13] = 4'b1111;
frame1.ctrl[14] = 4'b1111;
frame1.ctrl[15] = 4'b1111;
frame1.ctrl[16] = 4'b1111;
frame1.ctrl[17] = 4'b1111;
frame1.ctrl[18] = 4'b1111;
frame1.ctrl[19] = 4'b1111;
frame1.ctrl[20] = 4'b1111;
frame1.ctrl[21] = 4'b0011;
frame1.ctrl[22] = 4'b0000;
frame1.ctrl[23] = 4'b0000;
frame1.ctrl[24] = 4'b0000;
frame1.ctrl[25] = 4'b0000;
frame1.ctrl[26] = 4'b0000;
frame1.ctrl[27] = 4'b0000;
frame1.ctrl[28] = 4'b0000;
frame1.ctrl[29] = 4'b0000;
frame1.ctrl[30] = 4'b0000;
frame1.ctrl[31] = 4'b0000;
frame1.crc = 32'hDE13388C;
frame1.underrun = 1'b0;
// Frame 2
frame2.data[0] = 32'h04030201;
frame2.data[1] = 32'h02020605;
frame2.data[2] = 32'h06050403;
frame2.data[3] = 32'h55AA2E80;
frame2.data[4] = 32'hAA55AA55;
frame2.data[5] = 32'h55AA55AA;
frame2.data[6] = 32'hAA55AA55;
frame2.data[7] = 32'h55AA55AA;
frame2.data[8] = 32'hAA55AA55;
frame2.data[9] = 32'h55AA55AA;
frame2.data[10] = 32'hAA55AA55;
frame2.data[11] = 32'h55AA55AA;
frame2.data[12] = 32'hAA55AA55;
frame2.data[13] = 32'h55AA55AA;
frame2.data[14] = 32'hAA55AA55;
frame2.data[15] = 32'h55AA55AA;
frame2.data[16] = 32'hAA55AA55;
frame2.data[17] = 32'h55AA55AA;
frame2.data[18] = 32'hAA55AA55;
frame2.data[19] = 32'h55AA55AA;
frame2.data[20] = 32'h00000000;
frame2.data[21] = 32'h00000000;
frame2.data[22] = 32'h00000000;
frame2.data[23] = 32'h00000000;
frame2.data[24] = 32'h00000000;
frame2.data[25] = 32'h00000000;
frame2.data[26] = 32'h00000000;
frame2.data[27] = 32'h00000000;
frame2.data[28] = 32'h00000000;
frame2.data[29] = 32'h00000000;
frame2.data[30] = 32'h00000000;
frame2.data[31] = 32'h00000000;
 
frame2.ctrl[0] = 4'b1111;
frame2.ctrl[1] = 4'b1111;
frame2.ctrl[2] = 4'b1111;
frame2.ctrl[3] = 4'b1111;
frame2.ctrl[4] = 4'b1111;
frame2.ctrl[5] = 4'b1111;
frame2.ctrl[6] = 4'b1111;
frame2.ctrl[7] = 4'b1111;
frame2.ctrl[8] = 4'b1111;
frame2.ctrl[9] = 4'b1111;
frame2.ctrl[10] = 4'b1111;
frame2.ctrl[11] = 4'b1111;
frame2.ctrl[12] = 4'b1111;
frame2.ctrl[13] = 4'b1111;
frame2.ctrl[14] = 4'b1111;
frame2.ctrl[15] = 4'b1111;
frame2.ctrl[16] = 4'b1111;
frame2.ctrl[17] = 4'b1111;
frame2.ctrl[18] = 4'b1111;
frame2.ctrl[19] = 4'b1111;
frame2.ctrl[20] = 4'b0000;
frame2.ctrl[21] = 4'b0000;
frame2.ctrl[22] = 4'b0000;
frame2.ctrl[23] = 4'b0000;
frame2.ctrl[24] = 4'b0000;
frame2.ctrl[25] = 4'b0000;
frame2.ctrl[26] = 4'b0000;
frame2.ctrl[27] = 4'b0000;
frame2.ctrl[28] = 4'b0000;
frame2.ctrl[29] = 4'b0000;
frame2.ctrl[30] = 4'b0000;
frame2.ctrl[31] = 4'b0000;
frame2.crc = 32'h20C6B69D;
frame2.underrun = 1'b1;
// Frame 3
frame3.data[0] = 32'h03040506;
frame3.data[1] = 32'h05060102;
frame3.data[2] = 32'h02020304;
frame3.data[3] = 32'hEE111500;
frame3.data[4] = 32'h11EE11EE;
frame3.data[5] = 32'hEE11EE11;
frame3.data[6] = 32'h11EE11EE;
frame3.data[7] = 32'hEE11EE11;
frame3.data[8] = 32'h00EE11EE;
frame3.data[9] = 32'h00000000;
frame3.data[10] = 32'h00000000;
frame3.data[11] = 32'h00000000;
frame3.data[12] = 32'h00000000;
frame3.data[13] = 32'h00000000;
frame3.data[14] = 32'h00000000;
frame3.data[15] = 32'h00000000;
frame3.data[16] = 32'h00000000;
frame3.data[17] = 32'h00000000;
frame3.data[18] = 32'h00000000;
frame3.data[19] = 32'h00000000;
frame3.data[20] = 32'h00000000;
frame3.data[21] = 32'h00000000;
frame3.data[22] = 32'h00000000;
frame3.data[23] = 32'h00000000;
frame3.data[24] = 32'h00000000;
frame3.data[25] = 32'h00000000;
frame3.data[26] = 32'h00000000;
frame3.data[27] = 32'h00000000;
frame3.data[28] = 32'h00000000;
frame3.data[29] = 32'h00000000;
frame3.data[30] = 32'h00000000;
frame3.data[31] = 32'h00000000;
 
frame3.ctrl[0] = 4'b1111;
frame3.ctrl[1] = 4'b1111;
frame3.ctrl[2] = 4'b1111;
frame3.ctrl[3] = 4'b1111;
frame3.ctrl[4] = 4'b1111;
frame3.ctrl[5] = 4'b1111;
frame3.ctrl[6] = 4'b1111;
frame3.ctrl[7] = 4'b1111;
frame3.ctrl[8] = 4'b0111;
frame3.ctrl[9] = 4'b0000;
frame3.ctrl[10] = 4'b0000;
frame3.ctrl[11] = 4'b0000;
frame3.ctrl[12] = 4'b0000;
frame3.ctrl[13] = 4'b0000;
frame3.ctrl[14] = 4'b0000;
frame3.ctrl[15] = 4'b0000;
frame3.ctrl[16] = 4'b0000;
frame3.ctrl[17] = 4'b0000;
frame3.ctrl[18] = 4'b0000;
frame3.ctrl[19] = 4'b0000;
frame3.ctrl[20] = 4'b0000;
frame3.ctrl[21] = 4'b0000;
frame3.ctrl[22] = 4'b0000;
frame3.ctrl[23] = 4'b0000;
frame3.ctrl[24] = 4'b0000;
frame3.ctrl[25] = 4'b0000;
frame3.ctrl[26] = 4'b0000;
frame3.ctrl[27] = 4'b0000;
frame3.ctrl[28] = 4'b0000;
frame3.ctrl[29] = 4'b0000;
frame3.ctrl[30] = 4'b0000;
frame3.ctrl[31] = 4'b0000;
frame3.crc = 32'h6B734A56;
frame3.underrun = 1'b0;
end // initial
 
// DUT signals
reg reset;
 
//Client transmitter signals
//client receiver signals
wire [63:0] rx_data;
wire [7:0] rx_data_valid;
wire rx_good_frame;
wire rx_bad_frame;
wire rx_clk;
wire [28:0] rx_statistics_vector;
wire rx_statistics_valid;
wire [64:0] configuration_vector;
reg xgmii_rx_clk;
reg [31:0] xgmii_rxd;
reg [3:0] xgmii_rxc;
 
reg rx_monitor_finished;
wire simulation_finished;
 
/*---------------------------------------------------------------------------
-- wire up Device Under Test
---------------------------------------------------------------------------*/
rxReceiveEngine uut (
.rxclk_in(xgmii_rx_clk),
.reset_in(reset),
.rxclk_out(rx_clk),
.rxd_in(xgmii_rxd),
.rxc_in(xgmii_rxc),
.rxStatRegPlus(rxStatRegPlus),
.cfgRxRegData_in(configuration_vector),
.rx_data(rx_data),
.rx_data_valid(rx_data_valid),
.rx_good_frame(rx_good_frame),
.rx_bad_frame(rx_bad_frame),
.rxCfgofRS(rxCfgofRS),
.rxTxLinkFault(rxTxLinkFault)
// .fcTxPauseData(),
// .fcTxPauseValid()
);
 
assign configuration_vector = {1'b0, 64'h058f010203040506};
/*---------------------------------------------------------------------------
-- Clock drivers
---------------------------------------------------------------------------*/
initial
begin
xgmii_rx_clk <= 0;
#1000;
forever
begin
#3200;
xgmii_rx_clk <= 1;
#3200;
xgmii_rx_clk <= 0;
end
end // initial begin
 
 
 
/* RX Stimulus process - insert frames into the PHY side of the
* receiver
*/
 
task rx_stimulus_send_column;
input [31:0] d;
input [ 3:0] c;
begin
@(posedge xgmii_rx_clk or negedge xgmii_rx_clk);
#1600;
xgmii_rxd <= d;
xgmii_rxc <= c;
end
endtask // rx_stimulus_send_column
 
task rx_stimulus_send_idle;
begin
rx_stimulus_send_column(32'h07070707,4'b1111);
end
endtask // rx_stimulus_send_idle
task rx_stimulus_send_frame;
input `FRAME_TYP frame;
integer column_index, lane_index, byte_count, I, J;
reg [31:0] scratch_column_data, current_column_data;
reg [ 3:0] scratch_column_ctrl, current_column_ctrl;
reg [ 7:0] code_temp;
begin
rx_stimulus_working_frame.frombits(frame);
column_index = 0;
lane_index = 0;
byte_count = 0;
// send preamble
rx_stimulus_send_column(32'h555555FB, 4'b0001);
rx_stimulus_send_column(32'hD5555555, 4'b0000);
// send complete columns
while (rx_stimulus_working_frame.ctrl[column_index] === 4'b1111)
begin
rx_stimulus_send_column(rx_stimulus_working_frame.data[column_index],
4'b0000);
column_index = column_index + 1;
byte_count = byte_count + 4;
end
current_column_data = rx_stimulus_working_frame.data[column_index];
current_column_ctrl = rx_stimulus_working_frame.ctrl[column_index];
while (current_column_ctrl[lane_index])
begin
for (J = 0; J < 8; J = J + 1)
scratch_column_data[lane_index*8+J] =
current_column_data[lane_index*8+J];
scratch_column_ctrl[lane_index] = 0;
lane_index = lane_index + 1;
byte_count = byte_count + 1;
end
// send any padding required
while (byte_count < `MIN_FRAME_DATA_BYTES)
begin
if (lane_index == 4)
begin
rx_stimulus_send_column(scratch_column_data,
scratch_column_ctrl);
lane_index = 0;
end
for (J = 0; J < 8; J = J + 1)
scratch_column_data[lane_index*8+J] = 0;
scratch_column_ctrl[lane_index] = 0;
lane_index = lane_index + 1;
byte_count = byte_count + 1;
end // while (byte_count < `MIN_FRAME_DATA_BYTES)
// send the CRC
for (I = 3; I >= 0; I = I - 1)
begin
if (lane_index == 4)
begin
rx_stimulus_send_column(scratch_column_data,
scratch_column_ctrl);
lane_index = 0;
end
for (J = 0; J < 8; J = J + 1)
scratch_column_data[lane_index*8+J] =
rx_stimulus_working_frame.crc[I*8+J];
scratch_column_ctrl = 0;
lane_index = lane_index + 1;
end // for (I = 3; I >= 0; I = I - 1)
// send the terminate/error column
if (lane_index == 4)
begin
rx_stimulus_send_column(scratch_column_data,
scratch_column_ctrl);
lane_index = 0;
end
// send an /E/ if underrun, /T/ if not
code_temp = rx_stimulus_working_frame.underrun ? 8'hFE : 8'hFD;
for (J = 0; J < 8; J = J + 1)
scratch_column_data[lane_index*8+J] = code_temp[J];
scratch_column_ctrl[lane_index] = 1;
 
lane_index = lane_index + 1;
while (lane_index < 4)
begin
code_temp = 8'h07;
for (J = 0; J < 8; J = J + 1)
scratch_column_data[lane_index*8+J] = code_temp[J];
scratch_column_ctrl[lane_index] = 1;
lane_index = lane_index + 1;
end
rx_stimulus_send_column(scratch_column_data,
scratch_column_ctrl);
$display("Receiver: frame inserted into PHY interface");
end
endtask // rx_stimulus_send_frame
 
initial
begin : p_rx_stimulus
integer I;
while (reset !== 0)
rx_stimulus_send_idle;
for (I = 0; I < 99; I = I + 1)
rx_stimulus_send_idle;
rx_stimulus_send_frame(frame0.tobits(0));
rx_stimulus_send_idle;
rx_stimulus_send_idle;
rx_stimulus_send_idle;
rx_stimulus_send_frame(frame1.tobits(0));
rx_stimulus_send_idle;
rx_stimulus_send_idle;
rx_stimulus_send_idle;
rx_stimulus_send_frame(frame2.tobits(0));
rx_stimulus_send_idle;
rx_stimulus_send_idle;
rx_stimulus_send_frame(frame3.tobits(0));
while (1)
rx_stimulus_send_idle;
end // block: p_rx_stimulus
 
// reset process
initial
begin
$display("Resetting the core...");
reset <= 1;
#200000;
reset <= 0;
end
 
// Simulation control
initial
begin
#100000000;
$display("** failure: Testbench timed out");
$stop;
end // initial begin
 
endmodule

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