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Rev 335 → Rev 338

/verilog/tb_eth_defines.v
0,0 → 1,194
//////////////////////////////////////////////////////////////////////
//// ////
//// tb_eth_defines.v ////
//// ////
//// This file is part of the Ethernet IP core project ////
//// http://www.opencores.org/projects/ethmac/ ////
//// ////
//// Author(s): ////
//// - Igor Mohor (igorM@opencores.org) ////
//// ////
//// All additional information is avaliable in the Readme.txt ////
//// file. ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2001, 2002 Authors ////
//// ////
//// 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 ////
//// ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
// Revision 1.3 2002/07/19 13:57:53 mohor
// Testing environment also includes traffic cop, memory interface and host
// interface.
//
// Revision 1.2 2002/05/03 10:22:17 mohor
// TX_BUF_BASE changed.
//
// Revision 1.1 2002/03/19 12:53:54 mohor
// Some defines that are used in testbench only were moved to tb_eth_defines.v
// file.
//
//
//
//
 
 
//`define EXTERNAL_DMA // Using DMA
 
`define MULTICAST_XFR 0
`define UNICAST_XFR 1
`define BROADCAST_XFR 2
`define UNICAST_WRONG_XFR 3
 
`define ETH_BASE 32'hd0000000
`define ETH_WIDTH 32'h800
`define MEMORY_BASE 32'h2000
`define MEMORY_WIDTH 32'h10000
`define TX_BUF_BASE `MEMORY_BASE
`define RX_BUF_BASE `MEMORY_BASE + 32'h8000
`define TX_BD_BASE `ETH_BASE + 32'h00000400
`define RX_BD_BASE `ETH_BASE + 32'h00000600
 
`define M1_ADDRESSED_S1 ( (m1_wb_adr_i >= `ETH_BASE) & (m1_wb_adr_i < (`ETH_BASE + `ETH_WIDTH )) )
`define M1_ADDRESSED_S2 ( (m1_wb_adr_i >= `MEMORY_BASE) & (m1_wb_adr_i < (`MEMORY_BASE + `MEMORY_WIDTH)) )
`define M2_ADDRESSED_S1 ( (m2_wb_adr_i >= `ETH_BASE) & (m2_wb_adr_i < (`ETH_BASE + `ETH_WIDTH )) )
`define M2_ADDRESSED_S2 ( (m2_wb_adr_i >= `MEMORY_BASE) & (m2_wb_adr_i < (`MEMORY_BASE + `MEMORY_WIDTH)) )
 
 
 
/* Tx BD */
`define ETH_TX_BD_READY 32'h8000 /* Tx BD Ready */
`define ETH_TX_BD_IRQ 32'h4000 /* Tx BD IRQ Enable */
`define ETH_TX_BD_WRAP 32'h2000 /* Tx BD Wrap (last BD) */
`define ETH_TX_BD_PAD 32'h1000 /* Tx BD Pad Enable */
`define ETH_TX_BD_CRC 32'h0800 /* Tx BD CRC Enable */
 
`define ETH_TX_BD_UNDERRUN 32'h0100 /* Tx BD Underrun Status */
`define ETH_TX_BD_RETRY 32'h00F0 /* Tx BD Retry Status */
`define ETH_TX_BD_RETLIM 32'h0008 /* Tx BD Retransmission Limit Status */
`define ETH_TX_BD_LATECOL 32'h0004 /* Tx BD Late Collision Status */
`define ETH_TX_BD_DEFER 32'h0002 /* Tx BD Defer Status */
`define ETH_TX_BD_CARRIER 32'h0001 /* Tx BD Carrier Sense Lost Status */
 
/* Rx BD */
`define ETH_RX_BD_EMPTY 32'h8000 /* Rx BD Empty */
`define ETH_RX_BD_IRQ 32'h4000 /* Rx BD IRQ Enable */
`define ETH_RX_BD_WRAP 32'h2000 /* Rx BD Wrap (last BD) */
 
`define ETH_RX_BD_MISS 32'h0080 /* Rx BD Miss Status */
`define ETH_RX_BD_OVERRUN 32'h0040 /* Rx BD Overrun Status */
`define ETH_RX_BD_INVSIMB 32'h0020 /* Rx BD Invalid Symbol Status */
`define ETH_RX_BD_DRIBBLE 32'h0010 /* Rx BD Dribble Nibble Status */
`define ETH_RX_BD_TOOLONG 32'h0008 /* Rx BD Too Long Status */
`define ETH_RX_BD_SHORT 32'h0004 /* Rx BD Too Short Frame Status */
`define ETH_RX_BD_CRCERR 32'h0002 /* Rx BD CRC Error Status */
`define ETH_RX_BD_LATECOL 32'h0001 /* Rx BD Late Collision Status */
 
 
 
/* Register space */
`define ETH_MODER `ETH_BASE + 32'h00 /* Mode Register */
`define ETH_INT `ETH_BASE + 32'h04 /* Interrupt Source Register */
`define ETH_INT_MASK `ETH_BASE + 32'h08 /* Interrupt Mask Register */
`define ETH_IPGT `ETH_BASE + 32'h0C /* Back to Bak Inter Packet Gap Register */
`define ETH_IPGR1 `ETH_BASE + 32'h10 /* Non Back to Back Inter Packet Gap Register 1 */
`define ETH_IPGR2 `ETH_BASE + 32'h14 /* Non Back to Back Inter Packet Gap Register 2 */
`define ETH_PACKETLEN `ETH_BASE + 32'h18 /* Packet Length Register (min. and max.) */
`define ETH_COLLCONF `ETH_BASE + 32'h1C /* Collision and Retry Configuration Register */
`define ETH_RX_BD_NUM `ETH_BASE + 32'h20 /* Receive Buffer Descriptor Number Register */
`define ETH_CTRLMODER `ETH_BASE + 32'h24 /* Control Module Mode Register */
`define ETH_MIIMODER `ETH_BASE + 32'h28 /* MII Mode Register */
`define ETH_MIICOMMAND `ETH_BASE + 32'h2C /* MII Command Register */
`define ETH_MIIADDRESS `ETH_BASE + 32'h30 /* MII Address Register */
`define ETH_MIITX_DATA `ETH_BASE + 32'h34 /* MII Transmit Data Register */
`define ETH_MIIRX_DATA `ETH_BASE + 32'h38 /* MII Receive Data Register */
`define ETH_MIISTATUS `ETH_BASE + 32'h3C /* MII Status Register */
`define ETH_MAC_ADDR0 `ETH_BASE + 32'h40 /* MAC Individual Address Register 0 */
`define ETH_MAC_ADDR1 `ETH_BASE + 32'h44 /* MAC Individual Address Register 1 */
`define ETH_HASH_ADDR0 `ETH_BASE + 32'h48 /* Hash Register 0 */
`define ETH_HASH_ADDR1 `ETH_BASE + 32'h4C /* Hash Register 1 */
 
/* MODER Register */
`define ETH_MODER_RXEN 32'h00000001 /* Receive Enable */
`define ETH_MODER_TXEN 32'h00000002 /* Transmit Enable */
`define ETH_MODER_NOPRE 32'h00000004 /* No Preamble */
`define ETH_MODER_BRO 32'h00000008 /* Reject Broadcast */
`define ETH_MODER_IAM 32'h00000010 /* Use Individual Hash */
`define ETH_MODER_PRO 32'h00000020 /* Promiscuous (receive all) */
`define ETH_MODER_IFG 32'h00000040 /* Min. IFG not required */
`define ETH_MODER_LOOPBCK 32'h00000080 /* Loop Back */
`define ETH_MODER_NOBCKOF 32'h00000100 /* No Backoff */
`define ETH_MODER_EXDFREN 32'h00000200 /* Excess Defer */
`define ETH_MODER_FULLD 32'h00000400 /* Full Duplex */
`define ETH_MODER_RST 32'h00000800 /* Reset MAC */
`define ETH_MODER_DLYCRCEN 32'h00001000 /* Delayed CRC Enable */
`define ETH_MODER_CRCEN 32'h00002000 /* CRC Enable */
`define ETH_MODER_HUGEN 32'h00004000 /* Huge Enable */
`define ETH_MODER_PAD 32'h00008000 /* Pad Enable */
`define ETH_MODER_RECSMALL 32'h00010000 /* Receive Small */
 
/* Interrupt Source Register */
`define ETH_INT_TXB 32'h00000001 /* Transmit Buffer IRQ */
`define ETH_INT_TXE 32'h00000002 /* Transmit Error IRQ */
`define ETH_INT_RXF 32'h00000004 /* Receive Frame IRQ */
`define ETH_INT_RXE 32'h00000008 /* Receive Error IRQ */
`define ETH_INT_BUSY 32'h00000010 /* Busy IRQ */
`define ETH_INT_TXC 32'h00000020 /* Transmit Control Frame IRQ */
`define ETH_INT_RXC 32'h00000040 /* Received Control Frame IRQ */
 
/* Interrupt Mask Register */
`define ETH_INT_MASK_TXB 32'h00000001 /* Transmit Buffer IRQ Mask */
`define ETH_INT_MASK_TXE 32'h00000002 /* Transmit Error IRQ Mask */
`define ETH_INT_MASK_RXF 32'h00000004 /* Receive Frame IRQ Mask */
`define ETH_INT_MASK_RXE 32'h00000008 /* Receive Error IRQ Mask */
`define ETH_INT_MASK_BUSY 32'h00000010 /* Busy IRQ Mask */
`define ETH_INT_MASK_TXC 32'h00000020 /* Transmit Control Frame IRQ Mask */
`define ETH_INT_MASK_RXC 32'h00000040 /* Received Control Frame IRQ Mask */
 
/* Control Module Mode Register */
`define ETH_CTRLMODER_PASSALL 32'h00000001 /* Pass Control Frames */
`define ETH_CTRLMODER_RXFLOW 32'h00000002 /* Receive Control Flow Enable */
`define ETH_CTRLMODER_TXFLOW 32'h00000004 /* Transmit Control Flow Enable */
 
/* MII Mode Register */
`define ETH_MIIMODER_CLKDIV 32'h000000FF /* Clock Divider */
`define ETH_MIIMODER_NOPRE 32'h00000100 /* No Preamble */
`define ETH_MIIMODER_RST 32'h00000400 /* MIIM Reset */
 
/* MII Command Register */
`define ETH_MIICOMMAND_SCANSTAT 32'h00000001 /* Scan Status */
`define ETH_MIICOMMAND_RSTAT 32'h00000002 /* Read Status */
`define ETH_MIICOMMAND_WCTRLDATA 32'h00000004 /* Write Control Data */
 
/* MII Address Register */
`define ETH_MIIADDRESS_FIAD 32'h0000001F /* PHY Address */
`define ETH_MIIADDRESS_RGAD 32'h00001F00 /* RGAD Address */
 
/* MII Status Register */
`define ETH_MIISTATUS_LINKFAIL 32'h00000001 /* Link Fail */
`define ETH_MIISTATUS_BUSY 32'h00000002 /* MII Busy */
`define ETH_MIISTATUS_NVALID 32'h00000004 /* Data in MII Status Register is invalid */
/verilog/tb_ethernet.v
0,0 → 1,509
//////////////////////////////////////////////////////////////////////
//// ////
//// tb_ethernet.v ////
//// ////
//// This file is part of the Ethernet IP core project ////
//// http://www.opencores.org/projects/ethmac/ ////
//// ////
//// Author(s): ////
//// - Igor Mohor (igorM@opencores.org) ////
//// ////
//// All additional information is avaliable in the Readme.txt ////
//// file. ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2001, 2002 Authors ////
//// ////
//// 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 ////
//// ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
// Revision 1.2 2002/07/19 14:02:47 mohor
// Clock mrx_clk set to 2.5 MHz.
//
// Revision 1.1 2002/07/19 13:57:53 mohor
// Testing environment also includes traffic cop, memory interface and host
// interface.
//
//
//
//
//
 
 
 
`include "tb_eth_defines.v"
`include "eth_defines.v"
`include "timescale.v"
 
module tb_ethernet();
 
 
parameter Tp = 1;
 
 
reg wb_clk_o;
reg wb_rst_o;
 
reg mtx_clk;
reg mrx_clk;
 
wire [3:0] MTxD;
wire MTxEn;
wire MTxErr;
 
reg [3:0] MRxD; // This goes to PHY
reg MRxDV; // This goes to PHY
reg MRxErr; // This goes to PHY
reg MColl; // This goes to PHY
reg MCrs; // This goes to PHY
 
wire Mdi_I;
wire Mdo_O;
wire Mdo_OE;
wire Mdc_O;
 
integer tx_log;
integer rx_log;
 
reg StartTB;
 
`ifdef ETH_XILINX_RAMB4
reg gsr;
`endif
 
 
integer packet_ready_cnt, send_packet_cnt;
 
 
// Ethernet Slave Interface signals
wire [31:0] eth_sl_wb_adr_i, eth_sl_wb_dat_o, eth_sl_wb_dat_i;
wire [3:0] eth_sl_wb_sel_i;
wire eth_sl_wb_we_i, eth_sl_wb_cyc_i, eth_sl_wb_stb_i, eth_sl_wb_ack_o, eth_sl_wb_err_o;
 
// Memory Slave Interface signals
wire [31:0] mem_sl_wb_adr_i, mem_sl_wb_dat_o, mem_sl_wb_dat_i;
wire [3:0] mem_sl_wb_sel_i;
wire mem_sl_wb_we_i, mem_sl_wb_cyc_i, mem_sl_wb_stb_i, mem_sl_wb_ack_o, mem_sl_wb_err_o;
 
// Ethernet Master Interface signals
wire [31:0] eth_ma_wb_adr_o, eth_ma_wb_dat_i, eth_ma_wb_dat_o;
wire [3:0] eth_ma_wb_sel_o;
wire eth_ma_wb_we_o, eth_ma_wb_cyc_o, eth_ma_wb_stb_o, eth_ma_wb_ack_i, eth_ma_wb_err_i;
 
// Host Master Interface signals
wire [31:0] host_ma_wb_adr_o, host_ma_wb_dat_i, host_ma_wb_dat_o;
wire [3:0] host_ma_wb_sel_o;
wire host_ma_wb_we_o, host_ma_wb_cyc_o, host_ma_wb_stb_o, host_ma_wb_ack_i, host_ma_wb_err_i;
 
 
 
eth_cop i_eth_cop
(
// WISHBONE common
.wb_clk_i(wb_clk_o), .wb_rst_i(wb_rst_o),
 
// WISHBONE MASTER 1 Ethernet Master Interface is connected here
.m1_wb_adr_i(eth_ma_wb_adr_o), .m1_wb_sel_i(eth_ma_wb_sel_o), .m1_wb_we_i (eth_ma_wb_we_o),
.m1_wb_dat_o(eth_ma_wb_dat_i), .m1_wb_dat_i(eth_ma_wb_dat_o), .m1_wb_cyc_i(eth_ma_wb_cyc_o),
.m1_wb_stb_i(eth_ma_wb_stb_o), .m1_wb_ack_o(eth_ma_wb_ack_i), .m1_wb_err_o(eth_ma_wb_err_i),
 
// WISHBONE MASTER 2 Host Interface is connected here
.m2_wb_adr_i(host_ma_wb_adr_o), .m2_wb_sel_i(host_ma_wb_sel_o), .m2_wb_we_i (host_ma_wb_we_o),
.m2_wb_dat_o(host_ma_wb_dat_i), .m2_wb_dat_i(host_ma_wb_dat_o), .m2_wb_cyc_i(host_ma_wb_cyc_o),
.m2_wb_stb_i(host_ma_wb_stb_o), .m2_wb_ack_o(host_ma_wb_ack_i), .m2_wb_err_o(host_ma_wb_err_i),
 
// WISHBONE slave 1 Ethernet Slave Interface is connected here
.s1_wb_adr_o(eth_sl_wb_adr_i), .s1_wb_sel_o(eth_sl_wb_sel_i), .s1_wb_we_o (eth_sl_wb_we_i),
.s1_wb_cyc_o(eth_sl_wb_cyc_i), .s1_wb_stb_o(eth_sl_wb_stb_i), .s1_wb_ack_i(eth_sl_wb_ack_o),
.s1_wb_err_i(eth_sl_wb_err_o), .s1_wb_dat_i(eth_sl_wb_dat_o), .s1_wb_dat_o(eth_sl_wb_dat_i),
 
// WISHBONE slave 2 Memory Interface is connected here
.s2_wb_adr_o(mem_sl_wb_adr_i), .s2_wb_sel_o(mem_sl_wb_sel_i), .s2_wb_we_o (mem_sl_wb_we_i),
.s2_wb_cyc_o(mem_sl_wb_cyc_i), .s2_wb_stb_o(mem_sl_wb_stb_i), .s2_wb_ack_i(mem_sl_wb_ack_o),
.s2_wb_err_i(mem_sl_wb_err_o), .s2_wb_dat_i(mem_sl_wb_dat_o), .s2_wb_dat_o(mem_sl_wb_dat_i)
);
 
 
 
 
// Connecting Ethernet top module
eth_top ethtop
(
// WISHBONE common
.wb_clk_i(wb_clk_o), .wb_rst_i(wb_rst_o),
 
// WISHBONE slave
.wb_adr_i(eth_sl_wb_adr_i[11:2]), .wb_sel_i(eth_sl_wb_sel_i), .wb_we_i(eth_sl_wb_we_i),
.wb_cyc_i(eth_sl_wb_cyc_i), .wb_stb_i(eth_sl_wb_stb_i), .wb_ack_o(eth_sl_wb_ack_o),
.wb_err_o(eth_sl_wb_err_o), .wb_dat_i(eth_sl_wb_dat_i), .wb_dat_o(eth_sl_wb_dat_o),
// WISHBONE master
.m_wb_adr_o(eth_ma_wb_adr_o), .m_wb_sel_o(eth_ma_wb_sel_o), .m_wb_we_o(eth_ma_wb_we_o),
.m_wb_dat_i(eth_ma_wb_dat_i), .m_wb_dat_o(eth_ma_wb_dat_o), .m_wb_cyc_o(eth_ma_wb_cyc_o),
.m_wb_stb_o(eth_ma_wb_stb_o), .m_wb_ack_i(eth_ma_wb_ack_i), .m_wb_err_i(eth_ma_wb_err_i),
 
//TX
.mtx_clk_pad_i(mtx_clk), .mtxd_pad_o(MTxD), .mtxen_pad_o(MTxEn), .mtxerr_pad_o(MTxErr),
 
//RX
.mrx_clk_pad_i(mrx_clk), .mrxd_pad_i(MRxD), .mrxdv_pad_i(MRxDV), .mrxerr_pad_i(MRxErr),
.mcoll_pad_i(MColl), .mcrs_pad_i(MCrs),
// MIIM
.mdc_pad_o(Mdc_O), .md_pad_i(Mdi_I), .md_pad_o(Mdo_O), .md_padoe_o(Mdo_OE),
.int_o()
);
 
 
 
// Connecting Memory Interface Module
eth_memory i_eth_memory
(
// WISHBONE common
.wb_clk_i(wb_clk_o), .wb_rst_i(wb_rst_o),
 
// WISHBONE slave: Memory Interface is connected here
.wb_adr_i(mem_sl_wb_adr_i), .wb_sel_i(mem_sl_wb_sel_i), .wb_we_i (mem_sl_wb_we_i),
.wb_cyc_i(mem_sl_wb_cyc_i), .wb_stb_i(mem_sl_wb_stb_i), .wb_ack_o(mem_sl_wb_ack_o),
.wb_err_o(mem_sl_wb_err_o), .wb_dat_o(mem_sl_wb_dat_o), .wb_dat_i(mem_sl_wb_dat_i)
);
 
 
// Connecting Host Interface
eth_host eth_host
(
// WISHBONE common
.wb_clk_i(wb_clk_o), .wb_rst_i(wb_rst_o),
 
// WISHBONE master
.wb_adr_o(host_ma_wb_adr_o), .wb_sel_o(host_ma_wb_sel_o), .wb_we_o (host_ma_wb_we_o),
.wb_dat_i(host_ma_wb_dat_i), .wb_dat_o(host_ma_wb_dat_o), .wb_cyc_o(host_ma_wb_cyc_o),
.wb_stb_o(host_ma_wb_stb_o), .wb_ack_i(host_ma_wb_ack_i), .wb_err_i(host_ma_wb_err_i)
);
 
 
 
 
 
// Reset pulse
initial
begin
MCrs=0; // This should come from PHY
MColl=0; // This should come from PHY
MRxD=0; // This should come from PHY
MRxDV=0; // This should come from PHY
MRxErr=0; // This should come from PHY
packet_ready_cnt = 0;
send_packet_cnt = 0;
tx_log = $fopen("ethernet_tx.log");
rx_log = $fopen("ethernet_rx.log");
wb_rst_o = 1'b1;
`ifdef ETH_XILINX_RAMB4
gsr = 1'b0;
#100 gsr = 1'b1;
#100 gsr = 1'b0;
`endif
#100 wb_rst_o = 1'b0;
#100 StartTB = 1'b1;
end
 
`ifdef ETH_XILINX_RAMB4
assign glbl.GSR = gsr;
`endif
 
 
 
// Generating wb_clk_o clock
initial
begin
wb_clk_o=0;
// forever #2.5 wb_clk_o = ~wb_clk_o; // 2*2.5 ns -> 200.0 MHz
// forever #5 wb_clk_o = ~wb_clk_o; // 2*5 ns -> 100.0 MHz
// forever #10 wb_clk_o = ~wb_clk_o; // 2*10 ns -> 50.0 MHz
forever #12.5 wb_clk_o = ~wb_clk_o; // 2*12.5 ns -> 40 MHz
// forever #15 wb_clk_o = ~wb_clk_o; // 2*10 ns -> 33.3 MHz
// forever #20 wb_clk_o = ~wb_clk_o; // 2*20 ns -> 25 MHz
// forever #25 wb_clk_o = ~wb_clk_o; // 2*25 ns -> 20.0 MHz
// forever #31.25 wb_clk_o = ~wb_clk_o; // 2*31.25 ns -> 16.0 MHz
// forever #50 wb_clk_o = ~wb_clk_o; // 2*50 ns -> 10.0 MHz
// forever #55 wb_clk_o = ~wb_clk_o; // 2*55 ns -> 9.1 MHz
end
 
// Generating mtx_clk clock
initial
begin
mtx_clk=0;
// #3 forever #20 mtx_clk = ~mtx_clk; // 2*20 ns -> 25 MHz
#3 forever #200 mtx_clk = ~mtx_clk; // 2*200 ns -> 2.5 MHz
end
 
// Generating mrx_clk clock
initial
begin
mrx_clk=0;
// #16 forever #20 mrx_clk = ~mrx_clk; // 2*20 ns -> 25 MHz
#16 forever #200 mrx_clk = ~mrx_clk; // 2*200 ns -> 2.5 MHz
end
 
reg [31:0] tmp;
initial
begin
wait(StartTB); // Start of testbench
 
eth_host.wb_write(`ETH_MODER, 4'hf, 32'h0); // Reset OFF
eth_host.wb_read(`ETH_MODER, 4'hf, tmp);
 
eth_host.wb_write(32'hd0000000, 4'hf, `ETH_MODER_RXEN | `ETH_MODER_TXEN | `ETH_MODER_PRO |
`ETH_MODER_CRCEN | `ETH_MODER_PAD); // Set MODER register
eth_host.wb_read(32'hd0000000, 4'hf, tmp);
 
initialize_txbd(3);
initialize_rxbd(6);
 
set_packet(16'h34, 8'h1);
set_packet(16'h34, 8'h11);
send_packet;
set_packet(16'h34, 8'h21);
set_packet(16'h34, 8'h31);
send_packet;
 
GetDataOnMRxD(100, `BROADCAST_XFR); // LengthRx bytes is comming on MRxD[3:0] signals
 
repeat (100) @(posedge mrx_clk); // Waiting for TxEthMac to finish transmit
 
 
GetDataOnMRxD(70, `BROADCAST_XFR); // LengthRx bytes is comming on MRxD[3:0] signals
 
 
repeat (10000) @(posedge wb_clk_o); // Waiting for TxEthMac to finish transmit
$display("\n\n End of simulation");
$stop;
 
 
 
end
 
 
task initialize_txbd;
input [6:0] txbd_num;
integer i;
integer bd_status_addr, buf_addr, bd_ptr_addr;
for(i=0; i<txbd_num; i=i+1) begin
buf_addr = `TX_BUF_BASE + i * 32'h600;
bd_status_addr = `TX_BD_BASE + i * 8;
bd_ptr_addr = bd_status_addr + 4;
// Initializing BD - status
if(i==txbd_num-1)
eth_host.wb_write(bd_status_addr, 4'hf, 32'h00007800); // last BD: + WRAP
else
eth_host.wb_write(bd_status_addr, 4'hf, 32'h00005800); // IRQ + PAD + CRC
 
eth_host.wb_write(bd_ptr_addr, 4'hf, buf_addr); // Initializing BD - pointer
end
endtask // initialize_txbd
 
 
task initialize_rxbd;
input [6:0] rxbd_num;
integer i;
integer bd_status_addr, buf_addr, bd_ptr_addr;
for(i=0; i<rxbd_num; i=i+1) begin
buf_addr = `RX_BUF_BASE + i * 32'h600;
bd_status_addr = `RX_BD_BASE + i * 8;
bd_ptr_addr = bd_status_addr + 4;
// Initializing BD - status
if(i==rxbd_num-1)
eth_host.wb_write(bd_status_addr, 4'hf, 32'h0000e000); // last BD: + WRAP
else
eth_host.wb_write(bd_status_addr, 4'hf, 32'h0000c000); // IRQ + PAD + CRC
 
eth_host.wb_write(bd_ptr_addr, 4'hf, buf_addr); // Initializing BD - pointer
end
endtask // initialize_rxbd
 
 
task set_packet;
input [15:0] len;
input [7:0] start_data;
 
integer i, sd;
integer bd_status_addr, bd_ptr_addr, buffer, bd;
begin
sd = start_data;
bd_status_addr = `TX_BD_BASE + packet_ready_cnt * 8;
bd_ptr_addr = bd_status_addr + 4;
// Reading BD + buffer pointer
eth_host.wb_read(bd_status_addr, 4'hf, bd);
eth_host.wb_read(bd_ptr_addr, 4'hf, buffer);
 
while(bd & `ETH_TX_BD_READY) begin // Buffer is ready. Don't touch !!!
repeat(100) @(posedge wb_clk_o);
i=i+1;
eth_host.wb_read(bd_status_addr, 4'hf, bd);
if(i>1000) begin
$display("(%0t)(%m)Waiting for TxBD ready to clear timeout", $time);
$stop;
end
end
 
// First write might not be word allign.
if(buffer[1:0]==1) begin
eth_host.wb_write(buffer-1, 4'h7, {8'h0, sd[7:0], sd[7:0]+3'h1, sd[7:0]+3'h2});
sd=sd+3;
i=3;
end
else if(buffer[1:0]==2) begin
eth_host.wb_write(buffer-2, 4'h3, {16'h0, sd[7:0], sd[7:0]+3'h1});
sd=sd+2;
i=2;
end
else if(buffer[1:0]==3) begin
eth_host.wb_write(buffer-3, 4'h1, {24'h0, sd[7:0]});
sd=sd+1;
i=1;
end
else
i=0;
 
 
for(i=i; i<len-4; i=i+4) begin // Last 0-3 bytes are not written
eth_host.wb_write(buffer+i, 4'hf, {sd[7:0], sd[7:0]+3'h1, sd[7:0]+3'h2, sd[7:0]+3'h3});
sd=sd+4;
end
// Last word
if(len-i==3)
eth_host.wb_write(buffer+i, 4'he, {sd[7:0], sd[7:0]+3'h1, sd[7:0]+3'h2, 8'h0});
else if(len-i==2)
eth_host.wb_write(buffer+i, 4'hc, {sd[7:0], sd[7:0]+3'h1, 16'h0});
else if(len-i==1)
eth_host.wb_write(buffer+i, 4'h8, {sd[7:0], 24'h0});
else if(len-i==4)
eth_host.wb_write(buffer+i, 4'hf, {sd[7:0], sd[7:0]+3'h1, sd[7:0]+3'h2, sd[7:0]+3'h3});
else
$display("(%0t)(%m) ERROR", $time);
 
// Checking WRAP bit
if(bd & `ETH_TX_BD_WRAP)
packet_ready_cnt = 0;
else
packet_ready_cnt = packet_ready_cnt+1;
 
// Writing len to bd
bd = bd | (len<<16);
eth_host.wb_write(bd_status_addr, 4'hf, bd);
end
endtask // set_packet
 
 
task send_packet;
 
integer bd_status_addr, bd_ptr_addr, buffer, bd;
begin
bd_status_addr = `TX_BD_BASE + send_packet_cnt * 8;
bd_ptr_addr = bd_status_addr + 4;
// Reading BD + buffer pointer
eth_host.wb_read(bd_status_addr, 4'hf, bd);
eth_host.wb_read(bd_ptr_addr, 4'hf, buffer);
 
if(bd & `ETH_TX_BD_WRAP)
send_packet_cnt=0;
else
send_packet_cnt=send_packet_cnt+1;
 
// Setting ETH_TX_BD_READY bit
bd = bd | `ETH_TX_BD_READY;
eth_host.wb_write(bd_status_addr, 4'hf, bd);
end
 
 
endtask // send_packet
 
 
task GetDataOnMRxD;
input [15:0] Len;
input [31:0] TransferType;
integer tt;
 
begin
@ (posedge mrx_clk);
#1MRxDV=1'b1;
for(tt=0; tt<15; tt=tt+1)
begin
MRxD=4'h5; // preamble
@ (posedge mrx_clk);
#1;
end
 
MRxD=4'hd; // SFD
for(tt=1; tt<(Len+1); tt=tt+1)
begin
@ (posedge mrx_clk);
#1;
if(TransferType == `UNICAST_XFR && tt == 1)
MRxD= 4'h0; // Unicast transfer
else if(TransferType == `BROADCAST_XFR && tt < 7)
MRxD = 4'hf;
else
MRxD=tt[3:0]; // Multicast transfer
 
@ (posedge mrx_clk);
#1;
if(TransferType == `BROADCAST_XFR && tt < 7)
MRxD = 4'hf;
else
MRxD=tt[7:4];
end
 
@ (posedge mrx_clk);
#1;
MRxDV=1'b0;
end
endtask // GetDataOnMRxD
 
 
endmodule
/verilog/eth_host.v
0,0 → 1,145
//////////////////////////////////////////////////////////////////////
//// ////
//// eth_host.v ////
//// ////
//// This file is part of the Ethernet IP core project ////
//// http://www.opencores.org/projects/ethmac/ ////
//// ////
//// Author(s): ////
//// - Igor Mohor (igorM@opencores.org) ////
//// ////
//// All additional information is avaliable in the Readme.txt ////
//// file. ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2001, 2002 Authors ////
//// ////
//// 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 ////
//// ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
//
//
//
//
 
`include "tb_eth_defines.v"
`include "timescale.v"
 
module eth_host
(
// WISHBONE common
wb_clk_i, wb_rst_i,
// WISHBONE master
wb_adr_o, wb_sel_o, wb_we_o, wb_dat_i, wb_dat_o, wb_cyc_o, wb_stb_o, wb_ack_i, wb_err_i
);
 
parameter Tp=1;
 
input wb_clk_i, wb_rst_i;
 
input [31:0] wb_dat_i;
input wb_ack_i, wb_err_i;
 
output [31:0] wb_adr_o, wb_dat_o;
output [3:0] wb_sel_o;
output wb_cyc_o, wb_stb_o, wb_we_o;
 
reg [31:0] wb_adr_o, wb_dat_o;
reg [3:0] wb_sel_o;
reg wb_cyc_o, wb_stb_o, wb_we_o;
 
integer host_log;
 
// Reset pulse
initial
begin
host_log = $fopen("eth_host.log");
end
 
 
task wb_write;
 
input [31:0] addr;
input [3:0] sel;
input [31:0] data;
 
begin
@ (posedge wb_clk_i); // Sync. with clock
#1;
wb_adr_o = addr;
wb_dat_o = data;
wb_sel_o = sel;
wb_cyc_o = 1;
wb_stb_o = 1;
wb_we_o = 1;
wait(wb_ack_i | wb_err_i);
$fdisplay(host_log, "(%0t)(%m)wb_write (0x%0x) = 0x%0x", $time, wb_adr_o, wb_dat_o);
@ (posedge wb_clk_i); // Sync. with clock
#1;
wb_adr_o = 'hx;
wb_dat_o = 'hx;
wb_sel_o = 'hx;
wb_cyc_o = 0;
wb_stb_o = 0;
wb_we_o = 'hx;
end
endtask
 
 
task wb_read;
 
input [31:0] addr;
input [3:0] sel;
output [31:0] data;
 
begin
@ (posedge wb_clk_i); // Sync. with clock
#1;
wb_adr_o = addr;
wb_sel_o = sel;
wb_cyc_o = 1;
wb_stb_o = 1;
wb_we_o = 0;
wait(wb_ack_i | wb_err_i);
@ (posedge wb_clk_i); // Sync. with clock
data = wb_dat_i;
$fdisplay(host_log, "(%0t)(%m)wb_read (0x%0x) = 0x%0x", $time, wb_adr_o, wb_dat_i);
#1;
wb_adr_o = 'hx;
wb_sel_o = 'hx;
wb_cyc_o = 0;
wb_stb_o = 0;
wb_we_o = 'hx;
end
endtask
 
 
 
endmodule
/verilog/tb_cop.v
0,0 → 1,506
//////////////////////////////////////////////////////////////////////
//// ////
//// tb_cop.v ////
//// ////
//// This file is part of the Ethernet IP core project ////
//// http://www.opencores.org/projects/??????/ ////
//// ////
//// Author(s): ////
//// - Igor Mohor (igorM@opencores.org) ////
//// ////
//// All additional information is avaliable in the Readme.txt ////
//// file. ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2001, 2002 Authors ////
//// ////
//// 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 ////
//// ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
//
//
//
 
 
 
`include "timescale.v"
 
module tb_cop();
 
 
parameter Tp = 1;
 
 
reg wb_clk_o;
reg wb_rst_o;
 
 
// WISHBONE master 1 (input)
reg [31:0] m1_wb_adr_o;
reg [3:0] m1_wb_sel_o;
reg m1_wb_we_o;
wire [31:0] m1_wb_dat_i;
reg [31:0] m1_wb_dat_o;
reg m1_wb_cyc_o;
reg m1_wb_stb_o;
wire m1_wb_ack_i;
wire m1_wb_err_i;
 
// WISHBONE master 2 (input)
reg [31:0] m2_wb_adr_o;
reg [3:0] m2_wb_sel_o;
reg m2_wb_we_o;
wire [31:0] m2_wb_dat_i;
reg [31:0] m2_wb_dat_o;
reg m2_wb_cyc_o;
reg m2_wb_stb_o;
wire m2_wb_ack_i;
wire m2_wb_err_i;
 
// WISHBONE slave 1 (output)
wire [31:0] s1_wb_adr_i;
wire [3:0] s1_wb_sel_i;
wire s1_wb_we_i;
reg [31:0] s1_wb_dat_o;
wire [31:0] s1_wb_dat_i;
wire s1_wb_cyc_i;
wire s1_wb_stb_i;
reg s1_wb_ack_o;
reg s1_wb_err_o;
 
// WISHBONE slave 2 (output)
wire [31:0] s2_wb_adr_i;
wire [3:0] s2_wb_sel_i;
wire s2_wb_we_i;
reg [31:0] s2_wb_dat_o;
wire [31:0] s2_wb_dat_i;
wire s2_wb_cyc_i;
wire s2_wb_stb_i;
reg s2_wb_ack_o;
reg s2_wb_err_o;
 
 
reg Wishbone1Busy;
reg Wishbone2Busy;
 
reg StartTB;
 
eth_cop i_eth_cop
(
// WISHBONE common
.wb_clk_i(wb_clk_o), .wb_rst_i(wb_rst_o),
 
// WISHBONE MASTER 1
.m1_wb_adr_i(m1_wb_adr_o), .m1_wb_sel_i(m1_wb_sel_o), .m1_wb_we_i (m1_wb_we_o), .m1_wb_dat_o(m1_wb_dat_i),
.m1_wb_dat_i(m1_wb_dat_o), .m1_wb_cyc_i(m1_wb_cyc_o), .m1_wb_stb_i(m1_wb_stb_o), .m1_wb_ack_o(m1_wb_ack_i),
.m1_wb_err_o(m1_wb_err_i),
 
// WISHBONE MASTER 2
.m2_wb_adr_i(m2_wb_adr_o), .m2_wb_sel_i(m2_wb_sel_o), .m2_wb_we_i (m2_wb_we_o), .m2_wb_dat_o(m2_wb_dat_i),
.m2_wb_dat_i(m2_wb_dat_o), .m2_wb_cyc_i(m2_wb_cyc_o), .m2_wb_stb_i(m2_wb_stb_o), .m2_wb_ack_o(m2_wb_ack_i),
.m2_wb_err_o(m2_wb_err_i),
 
// WISHBONE slave 1
.s1_wb_adr_o(s1_wb_adr_i), .s1_wb_sel_o(s1_wb_sel_i), .s1_wb_we_o (s1_wb_we_i), .s1_wb_cyc_o(s1_wb_cyc_i),
.s1_wb_stb_o(s1_wb_stb_i), .s1_wb_ack_i(s1_wb_ack_o), .s1_wb_err_i(s1_wb_err_o), .s1_wb_dat_i(s1_wb_dat_o),
.s1_wb_dat_o(s1_wb_dat_i),
// WISHBONE slave 2
.s2_wb_adr_o(s2_wb_adr_i), .s2_wb_sel_o(s2_wb_sel_i), .s2_wb_we_o (s2_wb_we_i), .s2_wb_cyc_o(s2_wb_cyc_i),
.s2_wb_stb_o(s2_wb_stb_i), .s2_wb_ack_i(s2_wb_ack_o), .s2_wb_err_i(s2_wb_err_o), .s2_wb_dat_i(s2_wb_dat_o),
.s2_wb_dat_o(s2_wb_dat_i)
);
 
/*
s1_wb_adr_i m_wb_adr_i
s1_wb_sel_i m_wb_sel_i
s1_wb_we_i m_wb_we_i
s1_wb_dat_o m_wb_dat_o
s1_wb_dat_i m_wb_dat_i
s1_wb_cyc_i m_wb_cyc_i
s1_wb_stb_i m_wb_stb_i
s1_wb_ack_o m_wb_ack_o
s1_wb_err_o m_wb_err_o
*/
 
 
 
initial
begin
s1_wb_ack_o = 0;
s1_wb_err_o = 0;
s1_wb_dat_o = 0;
s2_wb_ack_o = 0;
s2_wb_err_o = 0;
s2_wb_dat_o = 0;
 
// WISHBONE master 1 (input)
m1_wb_adr_o = 0;
m1_wb_sel_o = 0;
m1_wb_we_o = 0;
m1_wb_dat_o = 0;
m1_wb_cyc_o = 0;
m1_wb_stb_o = 0;
 
// WISHBONE master 2 (input)
m2_wb_adr_o = 0;
m2_wb_sel_o = 0;
m2_wb_we_o = 0;
m2_wb_dat_o = 0;
m2_wb_cyc_o = 0;
m2_wb_stb_o = 0;
 
Wishbone1Busy = 1'b0;
Wishbone2Busy = 1'b0;
end
 
 
// Reset pulse
initial
begin
wb_rst_o = 1'b1;
#100 wb_rst_o = 1'b0;
#100 StartTB = 1'b1;
end
 
 
 
// Generating WB_CLK_I clock
always
begin
wb_clk_o = 0;
forever #15 wb_clk_o = ~wb_clk_o; // 2*15 ns -> 33.3 MHz
end
 
 
integer seed_wb1, seed_wb2;
integer jj, kk;
initial
begin
seed_wb1 = 0;
seed_wb2 = 5;
end
 
 
 
 
initial
begin
wait(StartTB); // Start of testbench
fork
begin
for(jj=0; jj<100; jj=jj+1)
begin
if(seed_wb1[3:0]<4)
begin
$display("(%0t) m1 write to eth start (Data = Addr = 0x%0x)", $time, {21'h1a0000, seed_wb1[10:0]}); //0xd0000xxx
Wishbone1Write({21'h1a0000, seed_wb1[10:0]}, {21'h1a0000, seed_wb1[10:0]});
end
else
if(seed_wb1[3:0]<=7 && seed_wb1[3:0]>=4)
begin
$display("(%0t) m1 read to eth start (Addr = 0x%0x)", $time, {21'h1a0000, seed_wb1[10:0]});
Wishbone1Read({21'h1a0000, seed_wb1[10:0]});
end
else
if(seed_wb1[3:0]<=11 && seed_wb1[3:0]>=8)
begin
$display("(%0t) m1 write to memory start (Data = Addr = 0x%0x)", $time, {21'h000040, seed_wb1[10:0]}); //0x00020xxx
Wishbone1Write({21'h1a0000, seed_wb1[10:0]}, {21'h000040, seed_wb1[10:0]});
end
else
if(seed_wb1[3:0]>=12)
begin
$display("(%0t) m1 read to memory start (Addr = 0x%0x)", $time, {21'h000040, seed_wb1[10:0]});
Wishbone1Read({21'h000040, seed_wb1[10:0]});
end
#1 seed_wb1 = $random(seed_wb1);
$display("seed_wb1[4:0] = 0x%0x", seed_wb1[4:0]);
repeat(seed_wb1[4:0]) @ (posedge wb_clk_o);
end
end
 
begin
for(kk=0; kk<100; kk=kk+1)
begin
if(seed_wb2[3:0]<4)
begin
$display("(%0t) m2 write to eth start (Data = Addr = 0x%0x)", $time, {21'h1a0000, seed_wb2[10:0]}); //0xd0000xxx
Wishbone2Write({21'h1a0000, seed_wb2[10:0]}, {21'h1a0000, seed_wb2[10:0]});
end
else
if(seed_wb2[3:0]<=7 && seed_wb2[3:0]>=4)
begin
$display("(%0t) m2 read to eth start (Addr = 0x%0x)", $time, {21'h1a0000, seed_wb2[10:0]});
Wishbone2Read({21'h1a0000, seed_wb2[10:0]});
end
else
if(seed_wb2[3:0]<=11 && seed_wb2[3:0]>=8)
begin
$display("(%0t) m2 write to memory start (Data = Addr = 0x%0x)", $time, {21'h000040, seed_wb2[10:0]}); //0x00020xxx
Wishbone2Write({21'h1a0000, seed_wb2[10:0]}, {21'h000040, seed_wb2[10:0]});
end
else
if(seed_wb2[3:0]>=12)
begin
$display("(%0t) m2 read to memory start (Addr = 0x%0x)", $time, {21'h000040, seed_wb2[10:0]});
Wishbone2Read({21'h000040, seed_wb2[10:0]});
end
#1 seed_wb2 = $random(seed_wb2);
$display("seed_wb2[4:0] = 0x%0x", seed_wb2[4:0]);
repeat(seed_wb2[4:0]) @ (posedge wb_clk_o);
end
end
 
 
 
join
 
#10000 $stop;
end
 
 
 
 
 
 
 
task Wishbone1Write;
input [31:0] Data;
input [31:0] Address;
integer ii;
 
begin
wait (~Wishbone1Busy);
Wishbone1Busy = 1;
@ (posedge wb_clk_o);
#1;
m1_wb_adr_o = Address;
m1_wb_dat_o = Data;
m1_wb_we_o = 1'b1;
m1_wb_cyc_o = 1'b1;
m1_wb_stb_o = 1'b1;
m1_wb_sel_o = 4'hf;
 
wait(m1_wb_ack_i | m1_wb_err_i); // waiting for acknowledge response
 
// Writing information about the access to the screen
@ (posedge wb_clk_o);
if(m1_wb_ack_i)
$display("(%0t) Master1 write cycle finished ok(Data: 0x%0x, Addr: 0x%0x)", $time, Data, Address);
else
$display("(%0t) Master1 write cycle finished with error(Data: 0x%0x, Addr: 0x%0x)", $time, Data, Address);
 
#1;
m1_wb_adr_o = 32'hx;
m1_wb_dat_o = 32'hx;
m1_wb_we_o = 1'bx;
m1_wb_cyc_o = 1'b0;
m1_wb_stb_o = 1'b0;
m1_wb_sel_o = 4'hx;
#5 Wishbone1Busy = 0;
end
endtask
 
 
task Wishbone1Read;
input [31:0] Address;
reg [31:0] Data;
integer ii;
 
begin
wait (~Wishbone1Busy);
Wishbone1Busy = 1;
@ (posedge wb_clk_o);
#1;
m1_wb_adr_o = Address;
m1_wb_we_o = 1'b0;
m1_wb_cyc_o = 1'b1;
m1_wb_stb_o = 1'b1;
m1_wb_sel_o = 4'hf;
 
wait(m1_wb_ack_i | m1_wb_err_i); // waiting for acknowledge response
Data = m1_wb_dat_i;
 
// Writing information about the access to the screen
@ (posedge wb_clk_o);
if(m1_wb_ack_i)
$display("(%0t) Master1 read cycle finished ok(Data: 0x%0x, Addr: 0x%0x)", $time, Data, Address);
else
$display("(%0t) Master1 read cycle finished with error(Data: 0x%0x, Addr: 0x%0x)", $time, Data, Address);
 
#1;
m1_wb_adr_o = 32'hx;
m1_wb_dat_o = 32'hx;
m1_wb_we_o = 1'bx;
m1_wb_cyc_o = 1'b0;
m1_wb_stb_o = 1'b0;
m1_wb_sel_o = 4'hx;
#5 Wishbone1Busy = 0;
end
endtask
 
 
 
task Wishbone2Write;
input [31:0] Data;
input [31:0] Address;
integer ii;
 
begin
wait (~Wishbone2Busy);
Wishbone2Busy = 1;
@ (posedge wb_clk_o);
#1;
m2_wb_adr_o = Address;
m2_wb_dat_o = Data;
m2_wb_we_o = 1'b1;
m2_wb_cyc_o = 1'b1;
m2_wb_stb_o = 1'b1;
m2_wb_sel_o = 4'hf;
 
wait(m2_wb_ack_i | m2_wb_err_i); // waiting for acknowledge response
 
// Writing information about the access to the screen
@ (posedge wb_clk_o);
if(m2_wb_ack_i)
$display("(%0t) Master2 write cycle finished ok(Data: 0x%0x, Addr: 0x%0x)", $time, Data, Address);
else
$display("(%0t) Master2 write cycle finished with error(Data: 0x%0x, Addr: 0x%0x)", $time, Data, Address);
 
#1;
m2_wb_adr_o = 32'hx;
m2_wb_dat_o = 32'hx;
m2_wb_we_o = 1'bx;
m2_wb_cyc_o = 1'b0;
m2_wb_stb_o = 1'b0;
m2_wb_sel_o = 4'hx;
#5 Wishbone2Busy = 0;
end
endtask
 
 
task Wishbone2Read;
input [31:0] Address;
reg [31:0] Data;
integer ii;
 
begin
wait (~Wishbone2Busy);
Wishbone2Busy = 1;
@ (posedge wb_clk_o);
#1;
m2_wb_adr_o = Address;
m2_wb_we_o = 1'b0;
m2_wb_cyc_o = 1'b1;
m2_wb_stb_o = 1'b1;
m2_wb_sel_o = 4'hf;
 
wait(m2_wb_ack_i | m2_wb_err_i); // waiting for acknowledge response
Data = m2_wb_dat_i;
 
// Writing information about the access to the screen
@ (posedge wb_clk_o);
if(m2_wb_ack_i)
$display("(%0t) Master2 read cycle finished ok(Data: 0x%0x, Addr: 0x%0x)", $time, Data, Address);
else
$display("(%0t) Master2 read cycle finished with error(Data: 0x%0x, Addr: 0x%0x)", $time, Data, Address);
 
#1;
m2_wb_adr_o = 32'hx;
m2_wb_dat_o = 32'hx;
m2_wb_we_o = 1'bx;
m2_wb_cyc_o = 1'b0;
m2_wb_stb_o = 1'b0;
m2_wb_sel_o = 4'hx;
#5 Wishbone2Busy = 0;
end
endtask
 
 
 
 
 
 
 
 
integer seed_ack_s1, seed_ack_s2;
integer cnt_s1, cnt_s2;
initial
begin
seed_ack_s1 = 1;
cnt_s1 = 1;
seed_ack_s2 = 2;
cnt_s2 = 32'h88888888;
end
 
// Response from slave 1
always @ (posedge wb_clk_o or posedge wb_rst_o)
begin
#1 seed_ack_s1 = $random(seed_ack_s1);
wait(s1_wb_cyc_i & s1_wb_stb_i);
s1_wb_dat_o = cnt_s1;
repeat(seed_ack_s1[3:0]) @ (posedge wb_clk_o);
#Tp s1_wb_ack_o = 1'b1;
 
if(~s1_wb_we_i)
cnt_s1=cnt_s1+1;
 
@ (posedge wb_clk_o);
#Tp s1_wb_ack_o = 1'b0;
end
 
// Response from slave 2
always @ (posedge wb_clk_o or posedge wb_rst_o)
begin
#1 seed_ack_s2 = $random(seed_ack_s2);
wait(s2_wb_cyc_i & s2_wb_stb_i);
s2_wb_dat_o = cnt_s2;
repeat(seed_ack_s2[3:0]) @ (posedge wb_clk_o);
#Tp s2_wb_ack_o = 1'b1;
 
if(~s1_wb_we_i)
cnt_s2=cnt_s2+1;
 
@ (posedge wb_clk_o);
#Tp s2_wb_ack_o = 1'b0;
end
 
endmodule
 
/verilog/eth_memory.v
0,0 → 1,148
//////////////////////////////////////////////////////////////////////
//// ////
//// eth_memory.v ////
//// ////
//// This file is part of the Ethernet IP core project ////
//// http://www.opencores.org/projects/ethmac/ ////
//// ////
//// Author(s): ////
//// - Igor Mohor (igorM@opencores.org) ////
//// ////
//// All additional information is avaliable in the Readme.txt ////
//// file. ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2001, 2002 Authors ////
//// ////
//// 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 ////
//// ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
//
//
//
//
 
`include "tb_eth_defines.v"
`include "timescale.v"
 
module eth_memory
(
wb_clk_i, wb_rst_i, wb_adr_i, wb_sel_i, wb_we_i, wb_cyc_i,
wb_stb_i, wb_ack_o, wb_err_o, wb_dat_o, wb_dat_i
);
 
parameter Tp=1;
 
input wb_clk_i, wb_rst_i;
input [31:0] wb_adr_i, wb_dat_i;
input [3:0] wb_sel_i;
input wb_we_i, wb_cyc_i, wb_stb_i;
 
output wb_ack_o, wb_err_o;
output [31:0] wb_dat_o;
 
reg wb_ack_o, wb_err_o;
reg [31:0] wb_dat_o;
 
reg [7:0] memory0 [0:65535];
reg [7:0] memory1 [0:65535];
reg [7:0] memory2 [0:65535];
reg [7:0] memory3 [0:65535];
 
integer memory_log;
 
// Reset pulse
initial
begin
memory_log = $fopen("eth_memory.log");
wb_ack_o = 0;
wb_err_o = 0;
end
 
 
always @ (posedge wb_clk_i)
begin
if(wb_cyc_i & wb_stb_i)
begin
repeat(1) @ (posedge wb_clk_i); // Waiting 3 clock cycles before ack is set
begin // (you can add some random function here)
#1;
wb_ack_o = 1'b1;
if(~wb_we_i)
begin
if(wb_adr_i[1:0] == 2'b00) // word access
begin
wb_dat_o[31:24] = memory3[wb_adr_i[17:2]];
wb_dat_o[23:16] = memory2[wb_adr_i[17:2]];
wb_dat_o[15:08] = memory1[wb_adr_i[17:2]];
wb_dat_o[07:00] = memory0[wb_adr_i[17:2]];
end
else if(wb_adr_i[1:0] == 2'b10) // half access
begin
wb_dat_o[31:24] = 0;
wb_dat_o[23:16] = 0;
wb_dat_o[15:08] = memory1[wb_adr_i[17:2]];
wb_dat_o[07:00] = memory0[wb_adr_i[17:2]];
end
else if(wb_adr_i[1:0] == 2'b01) // byte access
begin
wb_dat_o[31:24] = 0;
wb_dat_o[23:16] = memory2[wb_adr_i[17:2]];
wb_dat_o[15:08] = 0;
wb_dat_o[07:00] = 0;
end
else if(wb_adr_i[1:0] == 2'b11) // byte access
begin
wb_dat_o[31:24] = 0;
wb_dat_o[23:16] = 0;
wb_dat_o[15:08] = 0;
wb_dat_o[07:00] = memory0[wb_adr_i[17:2]];
end
 
$fdisplay(memory_log, "(%0t)(%m)wb_read (0x%0x) = 0x%0x", $time, wb_adr_i, wb_dat_o);
end
else
begin
$fdisplay(memory_log, "(%0t)(%m)wb_write (0x%0x) = 0x%0x", $time, wb_adr_i, wb_dat_i);
if(wb_sel_i[0])
memory0[wb_adr_i[17:2]] = wb_dat_i[7:0];
if(wb_sel_i[1])
memory1[wb_adr_i[17:2]] = wb_dat_i[15:8];
if(wb_sel_i[2])
memory2[wb_adr_i[17:2]] = wb_dat_i[23:16];
if(wb_sel_i[3])
memory3[wb_adr_i[17:2]] = wb_dat_i[31:24];
end
end
@ (posedge wb_clk_i);
wb_ack_o <=#Tp 1'b0;
end
end
 
 
 
endmodule
/verilog/tb_eth_top.v
0,0 → 1,1593
//////////////////////////////////////////////////////////////////////
//// ////
//// tb_eth_top.v ////
//// ////
//// This file is part of the Ethernet IP core project ////
//// http://www.opencores.org/projects/ethmac/ ////
//// ////
//// Author(s): ////
//// - Igor Mohor (igorM@opencores.org) ////
//// ////
//// All additional information is avaliable in the Readme.txt ////
//// file. ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2001 Authors ////
//// ////
//// 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 ////
//// ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
// Revision 1.12 2002/02/26 17:01:09 mohor
// Small fixes for external/internal DMA missmatches.
//
// Revision 1.11 2002/02/16 13:06:59 mohor
// EXTERNAL_DMA used instead of WISHBONE_DMA.
//
// Revision 1.10 2002/02/16 07:22:15 mohor
// Testbench fixed, code simplified, unused signals removed.
//
// Revision 1.9 2002/02/14 20:14:38 billditt
// Added separate tests for Multicast, Unicast, Broadcast
//
// Revision 1.8 2002/02/12 20:24:00 mohor
// HASH0 and HASH1 register read/write added.
//
// Revision 1.7 2002/02/06 14:11:35 mohor
// non-DMA host interface added. Select the right configutation in eth_defines.
//
// Revision 1.6 2001/12/08 12:36:00 mohor
// TX_BD_NUM register added instead of the RB_BD_ADDR.
//
// Revision 1.5 2001/10/19 11:24:04 mohor
// Number of addresses (wb_adr_i) minimized.
//
// Revision 1.4 2001/10/19 08:46:53 mohor
// eth_timescale.v changed to timescale.v This is done because of the
// simulation of the few cores in a one joined project.
//
// Revision 1.3 2001/09/24 14:55:49 mohor
// Defines changed (All precede with ETH_). Small changes because some
// tools generate warnings when two operands are together. Synchronization
// between two clocks domains in eth_wishbonedma.v is changed (due to ASIC
// demands).
//
// Revision 1.2 2001/08/15 14:04:30 mohor
// Signal names changed on the top level for easier pad insertion (ASIC).
//
// Revision 1.1 2001/08/06 14:41:09 mohor
// A define FPGA added to select between Artisan RAM (for ASIC) and Block Ram (For Virtex).
// Include files fixed to contain no path.
// File names and module names changed ta have a eth_ prologue in the name.
// File eth_timescale.v is used to define timescale
// All pin names on the top module are changed to contain _I, _O or _OE at the end.
// Bidirectional signal MDIO is changed to three signals (Mdc_O, Mdi_I, Mdo_O
// and Mdo_OE. The bidirectional signal must be created on the top level. This
// is done due to the ASIC tools.
//
// Revision 1.1 2001/07/30 21:46:09 mohor
// Directory structure changed. Files checked and joind together.
//
//
//
//
//
 
 
 
`include "tb_eth_defines.v"
`include "eth_defines.v"
`include "timescale.v"
 
module tb_eth_top();
 
 
parameter Tp = 1;
 
 
reg WB_CLK_I;
reg WB_RST_I;
reg [31:0] WB_DAT_I;
 
reg [31:0] WB_ADR_I;
reg [3:0] WB_SEL_I;
reg WB_WE_I;
reg WB_CYC_I;
reg WB_STB_I;
 
wire [31:0] WB_DAT_O;
wire WB_ACK_O;
wire WB_ERR_O;
reg [1:0] WB_ACK_I;
 
`ifdef EXTERNAL_DMA
wire [1:0] WB_REQ_O;
wire [1:0] WB_ND_O;
wire WB_RD_O;
`else
// WISHBONE master
wire [31:0] m_wb_adr_o;
wire [3:0] m_wb_sel_o;
wire m_wb_we_o;
reg [31:0] m_wb_dat_i;
wire [31:0] m_wb_dat_o;
wire m_wb_cyc_o;
wire m_wb_stb_o;
reg m_wb_ack_i;
reg m_wb_err_i;
`endif
 
reg MTxClk;
wire [3:0] MTxD;
wire MTxEn;
wire MTxErr;
 
reg MRxClk;
reg [3:0] MRxD;
reg MRxDV;
reg MRxErr;
reg MColl;
reg MCrs;
 
reg Mdi_I;
wire Mdo_O;
wire Mdo_OE;
wire Mdc_O;
 
 
reg [7:0] memory0 [0:65535];
reg [7:0] memory1 [0:65535];
reg [7:0] memory2 [0:65535];
reg [7:0] memory3 [0:65535];
 
reg WishboneBusy;
reg StartTB;
reg [9:0] TxBDIndex;
reg [9:0] RxBDIndex;
 
reg LogEnable;
 
`ifdef EXTERNAL_DMA
`else
integer mcd1;
integer mcd2;
`endif
 
// Connecting Ethernet top module
 
eth_top ethtop
(
// WISHBONE common
.wb_clk_i(WB_CLK_I), .wb_rst_i(WB_RST_I), .wb_dat_i(WB_DAT_I), .wb_dat_o(WB_DAT_O),
 
// WISHBONE slave
.wb_adr_i(WB_ADR_I[11:2]), .wb_sel_i(WB_SEL_I), .wb_we_i(WB_WE_I), .wb_cyc_i(WB_CYC_I),
.wb_stb_i(WB_STB_I), .wb_ack_o(WB_ACK_O), .wb_err_o(WB_ERR_O),
`ifdef EXTERNAL_DMA
.wb_ack_i(WB_ACK_I), .wb_req_o(WB_REQ_O), .wb_nd_o(WB_ND_O), .wb_rd_o(WB_RD_O),
`else
// WISHBONE master
.m_wb_adr_o(m_wb_adr_o), .m_wb_sel_o(m_wb_sel_o), .m_wb_we_o(m_wb_we_o), .m_wb_dat_i(m_wb_dat_i),
.m_wb_dat_o(m_wb_dat_o), .m_wb_cyc_o(m_wb_cyc_o), .m_wb_stb_o(m_wb_stb_o), .m_wb_ack_i(m_wb_ack_i),
.m_wb_err_i(m_wb_err_i),
`endif
 
//TX
.mtx_clk_pad_i(MTxClk), .mtxd_pad_o(MTxD), .mtxen_pad_o(MTxEn), .mtxerr_pad_o(MTxErr),
 
//RX
.mrx_clk_pad_i(MRxClk), .mrxd_pad_i(MRxD), .mrxdv_pad_i(MRxDV), .mrxerr_pad_i(MRxErr),
.mcoll_pad_i(MColl), .mcrs_pad_i(MCrs),
// MIIM
.mdc_pad_o(Mdc_O), .md_pad_i(Mdi_I), .md_pad_o(Mdo_O), .md_padoe_o(Mdo_OE),
.int_o()
);
 
 
 
 
 
 
 
initial
begin
WB_CLK_I = 1'b0;
WB_DAT_I = 32'h0;
WB_ADR_I = 32'h0;
WB_SEL_I = 4'h0;
WB_WE_I = 1'b0;
WB_CYC_I = 1'b0;
WB_STB_I = 1'b0;
 
`ifdef EXTERNAL_DMA
WB_ACK_I = 2'h0;
`else
m_wb_ack_i = 0;
m_wb_err_i = 0;
`endif
MTxClk = 1'b0;
MRxClk = 1'b0;
MRxD = 4'h0;
MRxDV = 1'b0;
MRxErr = 1'b0;
MColl = 1'b0;
MCrs = 1'b0;
Mdi_I = 1'b0;
 
WishboneBusy = 1'b0;
TxBDIndex = 10'h0;
RxBDIndex = 10'h0;
LogEnable = 1'b1;
end
 
 
// Reset pulse
initial
begin
`ifdef EXTERNAL_DMA
`else
mcd1 = $fopen("ethernet_tx.log");
mcd2 = $fopen("ethernet_rx.log");
`endif
WB_RST_I = 1'b1;
#100 WB_RST_I = 1'b0;
#100 StartTB = 1'b1;
end
 
 
 
// Generating WB_CLK_I clock
always
begin
// forever #2.5 WB_CLK_I = ~WB_CLK_I; // 2*2.5 ns -> 200.0 MHz
// forever #5 WB_CLK_I = ~WB_CLK_I; // 2*5 ns -> 100.0 MHz
// forever #10 WB_CLK_I = ~WB_CLK_I; // 2*10 ns -> 50.0 MHz
// forever #15 WB_CLK_I = ~WB_CLK_I; // 2*10 ns -> 33.3 MHz
forever #18 WB_CLK_I = ~WB_CLK_I; // 2*18 ns -> 27.7 MHz
// forever #25 WB_CLK_I = ~WB_CLK_I; // 2*25 ns -> 20.0 MHz
// forever #31.25 WB_CLK_I = ~WB_CLK_I; // 2*31.25 ns -> 16.0 MHz
// forever #50 WB_CLK_I = ~WB_CLK_I; // 2*50 ns -> 10.0 MHz
// forever #55 WB_CLK_I = ~WB_CLK_I; // 2*55 ns -> 9.1 MHz
end
 
// Generating MTxClk clock
always
begin
// #3 forever #20 MTxClk = ~MTxClk; // 2*20 ns -> 25 MHz
#3 forever #200 MTxClk = ~MTxClk; // 2*200 ns -> 2.5 MHz
end
 
// Generating MRxClk clock
always
begin
// #16 forever #20 MRxClk = ~MRxClk; // 2*20 ns -> 25 MHz
// #16 forever #200 MRxClk = ~MRxClk; // 2*200 ns -> 2.5 MHz
#16 forever #62.5 MRxClk = ~MRxClk; // 2*62.5 ns -> 8 MHz // just for testing purposes
end
 
`ifdef EXTERNAL_DMA
initial
begin
wait(StartTB); // Start of testbench
WishboneWrite(32'h00000800, {26'h0, `ETH_MODER_ADR<<2}); // r_Rst = 1
WishboneWrite(32'h00000000, {26'h0, `ETH_MODER_ADR<<2}); // r_Rst = 0
WishboneWrite(32'h00000080, {26'h0, `ETH_TX_BD_NUM_ADR<<2}); // r_RxBDAddress = 0x80
WishboneWrite(32'h0002A443, {26'h0, `ETH_MODER_ADR<<2}); // RxEn, Txen, FullD, CrcEn, Pad, DmaEn, r_IFG
WishboneWrite(32'h00000004, {26'h0, `ETH_CTRLMODER_ADR<<2}); //r_TxFlow = 1
 
SendPacket(16'h0015, 1'b0);
SendPacket(16'h0043, 1'b1); // Control frame
SendPacket(16'h0025, 1'b0);
SendPacket(16'h0045, 1'b0);
SendPacket(16'h0025, 1'b0);
 
ReceivePacket(16'h0012, 1'b1); // Initializes RxBD and then Sends a control packet on the MRxD[3:0] signals.
ReceivePacket(16'h0011, 1'b0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0016, 1'b0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0017, 1'b0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0018, 1'b0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
 
 
WishboneRead({26'h0, `ETH_MODER_ADR}); // Read from MODER register
 
WishboneRead({24'h04, (8'h0<<2)}); // Read from TxBD register
WishboneRead({24'h04, (8'h1<<2)}); // Read from TxBD register
WishboneRead({24'h04, (8'h2<<2)}); // Read from TxBD register
WishboneRead({24'h04, (8'h3<<2)}); // Read from TxBD register
WishboneRead({24'h04, (8'h4<<2)}); // Read from TxBD register
WishboneRead({22'h01, (10'h80<<2)}); // Read from RxBD register
WishboneRead({22'h01, (10'h81<<2)}); // Read from RxBD register
WishboneRead({22'h01, (10'h82<<2)}); // Read from RxBD register
WishboneRead({22'h01, (10'h83<<2)}); // Read from RxBD register
WishboneRead({22'h01, (10'h84<<2)}); // Read from RxBD register
 
#10000 $stop;
end
 
 
 
 
 
 
 
task WishboneWrite;
input [31:0] Data;
input [31:0] Address;
integer ii;
 
begin
wait (~WishboneBusy);
WishboneBusy = 1;
@ (posedge WB_CLK_I);
#1;
WB_ADR_I = Address;
WB_DAT_I = Data;
WB_WE_I = 1'b1;
WB_CYC_I = 1'b1;
WB_STB_I = 1'b1;
WB_SEL_I = 4'hf;
 
wait(WB_ACK_O); // waiting for acknowledge response
 
// Writing information about the access to the screen
@ (posedge WB_CLK_I);
if(~Address[11] & ~Address[10])
$write("\nWrite to register (Data: 0x%x, Reg. Addr: 0x%0x)", Data, Address);
else
if(~Address[11] & Address[10])
if(Address[9:2] < tb_eth_top.ethtop.r_TxBDNum)
begin
$write("\nWrite to TxBD (Data: 0x%x, TxBD Addr: 0x%0x)\n", Data, Address);
if(Data[9])
$write("Send Control packet (PAUSE = 0x%0h)\n", Data[31:16]);
end
else
$write("\nWrite to RxBD (Data: 0x%x, RxBD Addr: 0x%0x)", Data, Address);
else
$write("\nWB write ?????????????? Data: 0x%x Addr: 0x%0x", Data, Address);
#1;
WB_ADR_I = 32'hx;
WB_DAT_I = 32'hx;
WB_WE_I = 1'bx;
WB_CYC_I = 1'b0;
WB_STB_I = 1'b0;
WB_SEL_I = 4'hx;
#5 WishboneBusy = 0;
end
endtask
 
 
task WishboneRead;
input [31:0] Address;
reg [31:0] Data;
integer ii;
 
begin
wait (~WishboneBusy);
WishboneBusy = 1;
@ (posedge WB_CLK_I);
#1;
WB_ADR_I = Address;
WB_WE_I = 1'b0;
WB_CYC_I = 1'b1;
WB_STB_I = 1'b1;
WB_SEL_I = 4'hf;
 
for(ii=0; (ii<20 & ~WB_ACK_O); ii=ii+1) // Response on the WISHBONE is limited to 20 WB_CLK_I cycles
begin
@ (posedge WB_CLK_I);
Data = WB_DAT_O;
end
 
if(ii==20)
begin
$display("\nERROR: Task WishboneRead(Address=0x%0h): Too late or no appeariance of the WB_ACK_O signal, (Time=%0t)",
Address, $time);
#50 $stop;
end
 
@ (posedge WB_CLK_I);
if(~Address[11] & ~Address[10])
$write("\nRead from register (Data: 0x%x, Reg. Addr: 0x%0x)", Data, Address);
else
if(~Address[11] & Address[10])
if(Address[9:2] < tb_eth_top.ethtop.r_TxBDNum)
begin
$write("\nRead from TxBD (Data: 0x%x, TxBD Addr: 0x%0x)", Data, Address);
end
else
$write("\nRead from RxBD (Data: 0x%x, RxBD Addr: 0x%0x)", Data, Address);
else
$write("\nWB read ????????? Data: 0x%x Addr: 0x%0x", Data, Address);
#1;
WB_ADR_I = 32'hx;
WB_WE_I = 1'bx;
WB_CYC_I = 1'b0;
WB_STB_I = 1'b0;
WB_SEL_I = 4'hx;
#5 WishboneBusy = 0;
end
endtask
 
 
 
 
task SendPacket;
input [15:0] Length;
input ControlFrame;
reg Wrap;
reg [31:0] TempAddr;
reg [31:0] TempData;
begin
if(TxBDIndex == 3) // Only 4 buffer descriptors are used
Wrap = 1'b1;
else
Wrap = 1'b0;
 
TempAddr = {22'h01, (TxBDIndex<<2)};
TempData = {Length[15:0], 1'b1, 1'b0, Wrap, 3'h0, ControlFrame, 1'b0, TxBDIndex[7:0]}; // Ready and Wrap = 1
 
#1;
if(TxBDIndex == 3) // Only 4 buffer descriptors are used
TxBDIndex = 0;
else
TxBDIndex = TxBDIndex + 1;
 
fork
begin
WishboneWrite(TempData, TempAddr); // Writing status to TxBD
end
begin
if(~ControlFrame)
WaitingForTxDMARequest(4'h1, Length); // Delay, DMALength
end
join
end
endtask
 
 
 
task ReceivePacket; // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
input [15:0] LengthRx;
input RxControlFrame;
reg WrapRx;
reg [31:0] TempRxAddr;
reg [31:0] TempRxData;
reg abc;
begin
if(RxBDIndex == 3) // Only 4 buffer descriptors are used
WrapRx = 1'b1;
else
WrapRx = 1'b0;
 
TempRxAddr = {22'h01, ((tb_eth_top.ethtop.r_TxBDNum + RxBDIndex)<<2)};
 
TempRxData = {LengthRx[15:0], 1'b1, 1'b0, WrapRx, 5'h0, RxBDIndex[7:0]}; // Ready and WrapRx = 1 or 0
 
#1;
if(RxBDIndex == 3) // Only 4 buffer descriptors are used
RxBDIndex = 0;
else
RxBDIndex = RxBDIndex + 1;
 
abc=1;
WishboneWrite(TempRxData, TempRxAddr); // Writing status to RxBD
abc=0;
fork
begin
#200;
if(RxControlFrame)
GetControlDataOnMRxD(LengthRx); // LengthRx = PAUSE timer value.
else
GetDataOnMRxD(LengthRx); // LengthRx bytes is comming on MRxD[3:0] signals
end
 
begin
if(RxControlFrame)
WaitingForRxDMARequest(4'h1, 16'h40); // Delay, DMALength = 64 bytes.
else
WaitingForRxDMARequest(4'h1, LengthRx); // Delay, DMALength
end
join
end
endtask
 
 
 
task WaitingForTxDMARequest;
input [3:0] Delay;
input [15:0] DMALength;
integer pp;
reg [7:0]a, b, c, d;
 
for(pp=0; pp*4<DMALength; pp=pp+1)
begin
a = 4*pp[7:0]+3;
b = 4*pp[7:0]+2;
c = 4*pp[7:0]+1;
d = 4*pp[7:0] ;
@ (posedge WB_REQ_O[0]);
repeat(Delay) @(posedge WB_CLK_I);
wait (~WishboneBusy);
WishboneBusy = 1;
#1;
WB_DAT_I = {a, b, c, d};
WB_ADR_I = {22'h02, pp[9:0]};
$display("task WaitingForTxDMARequest: pp=%0d, WB_ADR_I=0x%0h, WB_DAT_I=0x%0h", pp, WB_ADR_I, WB_DAT_I);
 
WB_WE_I = 1'b1;
WB_CYC_I = 1'b1;
WB_STB_I = 1'b1;
WB_SEL_I = 4'hf;
WB_ACK_I[0] = 1'b1;
 
@ (posedge WB_CLK_I);
#1;
WB_ADR_I = 32'hx;
WB_DAT_I = 32'hx;
WB_WE_I = 1'bx;
WB_CYC_I = 1'b0;
WB_STB_I = 1'b0;
WB_SEL_I = 4'hx;
WB_ACK_I[0] = 1'b0;
#5 WishboneBusy = 0;
end
endtask
 
 
task WaitingForRxDMARequest;
input [3:0] Delay;
input [15:0] DMALengthRx;
integer rr;
 
for(rr=0; rr*4<DMALengthRx; rr=rr+1)
begin
@ (posedge WB_REQ_O[1]);
repeat(Delay) @(posedge WB_CLK_I);
wait (~WishboneBusy);
WishboneBusy = 1;
#1;
WB_ADR_I = {22'h02, rr[9:0]};
$display("task WaitingForRxDMARequest: rr=%0d, WB_ADR_I=0x%0h, WB_DAT_O=0x%0h", rr, WB_ADR_I, WB_DAT_O);
 
WB_WE_I = 1'b1;
WB_CYC_I = 1'b1;
WB_STB_I = 1'b1;
WB_SEL_I = 4'hf;
WB_ACK_I[1] = 1'b1;
 
@ (posedge WB_CLK_I);
#1;
WB_ADR_I = 32'hx;
WB_WE_I = 1'bx;
WB_CYC_I = 1'b0;
WB_STB_I = 1'b0;
WB_SEL_I = 4'hx;
WB_ACK_I[1] = 1'b0;
#5 WishboneBusy = 0;
end
endtask
 
 
 
task GetDataOnMRxD;
input [15:0] Len;
integer tt;
 
begin
@ (posedge MRxClk);
MRxDV=1'b1;
for(tt=0; tt<15; tt=tt+1)
begin
MRxD=4'h5; // preamble
@ (posedge MRxClk);
end
MRxD=4'hd; // SFD
for(tt=0; tt<Len; tt=tt+1)
begin
@ (posedge MRxClk);
MRxD=tt[3:0];
@ (posedge MRxClk);
MRxD=tt[7:4];
end
@ (posedge MRxClk);
MRxDV=1'b0;
end
endtask
 
 
task GetControlDataOnMRxD;
input [15:0] Timer;
reg [127:0] Packet;
reg [127:0] Data;
reg [31:0] Crc;
integer tt;
 
begin
Packet = 128'h10082C000010_deadbeef0013_8880_0010; // 0180c2000001 + 8808 + 0001
Crc = 32'h6014fe08; // not a correct value
@ (posedge MRxClk);
MRxDV=1'b1;
for(tt=0; tt<15; tt=tt+1)
begin
MRxD=4'h5; // preamble
@ (posedge MRxClk);
end
MRxD=4'hd; // SFD
for(tt=0; tt<32; tt=tt+1)
begin
Data = Packet << (tt*4);
@ (posedge MRxClk);
MRxD=Data[127:124];
end
for(tt=0; tt<2; tt=tt+1) // timer
begin
Data[15:0] = Timer << (tt*8);
@ (posedge MRxClk);
MRxD=Data[11:8];
@ (posedge MRxClk);
MRxD=Data[15:12];
end
for(tt=0; tt<42; tt=tt+1) // padding
begin
Data[7:0] = 8'h0;
@ (posedge MRxClk);
MRxD=Data[3:0];
@ (posedge MRxClk);
MRxD=Data[3:0];
end
for(tt=0; tt<4; tt=tt+1) // crc
begin
Data[31:0] = Crc << (tt*8);
@ (posedge MRxClk);
MRxD=Data[27:24];
@ (posedge MRxClk);
MRxD=Data[31:28];
end
@ (posedge MRxClk);
MRxDV=1'b0;
end
endtask
 
`else // No EXTERNAL_DMA
 
initial
begin
wait(StartTB); // Start of testbench
// Reset eth MAC core
WishboneWrite(32'h00000800, {26'h0, `ETH_MODER_ADR<<2}); // r_Rst = 1
WishboneWrite(32'h00000000, {26'h0, `ETH_MODER_ADR<<2}); // r_Rst = 0
 
InitializeMemory;
 
// Select which test you want to run:
TestTxAndRx;
// TestUnicast;
// TestBroadcast;
// TestMulticast;
end
task TestTxAndRx;
 
integer ii, jj;
integer data_in, bd, pointer;
 
begin
WishboneWrite(32'h00000800, {26'h0, `ETH_MODER_ADR<<2}); // r_Rst = 1
WishboneWrite(32'h00000000, {26'h0, `ETH_MODER_ADR<<2}); // r_Rst = 0
WishboneWrite(32'h00000080, {26'h0, `ETH_TX_BD_NUM_ADR<<2}); // r_RxBDAddress = 0x80
 
// WishboneWrite(32'h0000a06b, {26'h0, `ETH_MODER_ADR<<2}); // RxEn, Txen, CrcEn, Pad en, half duplex,
WishboneWrite(32'h0000a46b, {26'h0, `ETH_MODER_ADR<<2}); // RxEn, Txen, CrcEn, Pad en, full duplex,
// WishboneWrite(32'h0001a06b, {26'h0, `ETH_MODER_ADR<<2}); // r_RecSmall, RxEn, Txen, CrcEn, Pad en, half duplex,
// r_IPG, promisc On, reject broadcast
 
WishboneWrite(32'h00000004, {26'h0, `ETH_CTRLMODER_ADR<<2}); //r_TxFlow = 1
 
WishboneWrite(32'h00000002, {26'h0, `ETH_MAC_ADDR1_ADR<<2}); // MAC = 000203040506
WishboneWrite(32'h03040506, {26'h0, `ETH_MAC_ADDR0_ADR<<2});
 
/*
// Just few reads
WishboneRead({26'h0, `ETH_MODER_ADR<<2}, data_in); // Read from ETH_MODER register
WishboneRead({26'h0, `ETH_TX_BD_NUM_ADR<<2}, data_in); // Read from ETH_TX_BD_NUM_ADR register
WishboneRead({26'h0, `ETH_MAC_ADDR1_ADR<<2}, data_in); // Read from ETH_MAC_ADDR1_ADR register
WishboneRead({26'h0, `ETH_MAC_ADDR0_ADR<<2}, data_in); // Read from ETH_MAC_ADDR0_ADR register
*/
 
 
 
 
for(jj=0; jj<8; jj=jj+4)
begin
WishboneWriteData(`TX_BUF_BASE + jj, 32'hffffffff, 4'hf); // Initializing data to ff
end
 
for(jj=0; jj<8; jj=jj+4)
begin
WishboneWriteData(`RX_BUF_BASE + jj, 32'hffffffff, 4'hf); // Initializing data to ff
end
 
// SendPacketX(16'h0064, 1'b0, 2'h3);
// SendPacketX(16'h0064, 1'b0, 2'h2);
// SendPacketX(16'h0064, 1'b0, 2'h1);
// SendPacketX(16'h0064, 1'b0, 2'h0);
// SendPacket(16'h0064, 1'b0);
// SendPacket(16'h0011, 1'b0);
// SendPacket(16'h0012, 1'b0);
 
fork
begin
SendPacketX(16'h264, 1'b0, 2'h3);
SendPacketX(16'h64, 1'b0, 2'h3);
end
begin
ReceivePacketX(16'h0030, 1'b0, `UNICAST_XFR, 2'h0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacketX(16'h0035, 1'b0, `UNICAST_XFR, 2'h0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacketX(16'h0040, 1'b0, `UNICAST_XFR, 2'h0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacketX(16'h0035, 1'b0, `UNICAST_XFR, 2'h0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacketX(16'h0062, 1'b0, `UNICAST_XFR, 2'h0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
end
join
 
fork
begin
wait(tb_eth_top.ethtop.wishbone.TxStatusWrite); // wait until tx status is written
end
begin
wait(tb_eth_top.ethtop.wishbone.RxStatusWrite); // wait until rx status is written
end
join
 
 
/*
SendPacket(16'h0013, 1'b0);
SendPacket(16'h0014, 1'b0);
 
SendPacket(16'h0030, 1'b0);
SendPacket(16'h0031, 1'b0);
SendPacket(16'h0032, 1'b0);
SendPacket(16'h0033, 1'b0);
SendPacket(16'h0025, 1'b0);
SendPacket(16'h0045, 1'b0);
SendPacket(16'h0025, 1'b0);
SendPacket(16'h0017, 1'b0);
*/
 
// ReceivePacketX(16'h0050, 1'b0, `MULTICAST_XFR, 2'h3); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacketX(16'h0050, 1'b0, `MULTICAST_XFR, 2'h2); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacketX(16'h0050, 1'b0, `MULTICAST_XFR, 2'h1); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacketX(16'h0050, 1'b0, `MULTICAST_XFR, 2'h0); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
 
// ReceivePacket(16'h0050, 1'b0, `MULTICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacket(16'h0051, 1'b0, `UNICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacket(16'h0052, 1'b0, `MULTICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacket(16'h0053, 1'b0, `BROADCAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacket(16'h0054, 1'b0, `UNICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacket(16'h0055, 1'b0, `MULTICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
// ReceivePacket(16'h0056, 1'b0, `UNICAST_WRONG_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
 
 
repeat(1000) @ (posedge MRxClk); // Waiting some time for all accesses to finish before reading out the statuses.
 
// WishboneRead({24'h04, (8'h0<<2)}, RxBD); // Read from TxBD register
// WishboneRead({24'h04, (8'h1<<2)}, RxBD); // Read from TxBD register
// WishboneRead({24'h04, (8'h2<<2)}, RxBD); // Read from TxBD register
// WishboneRead({24'h04, (8'h3<<2)}, RxBD); // Read from TxBD register
// WishboneRead({24'h04, (8'h4<<2)}, RxBD); // Read from TxBD register
 
for(jj=0; jj<3; jj=jj+1) // How many TxBD do we want to read?
begin
WishboneRead({22'h01, ((10'h0+jj[4:0]*2'h2)<<2)}, bd); // Read from TxBD
$display("\n(%0t)\t\tRead TxBD %0x = 0x%x", $time, jj, bd);
if(~bd[15]) // Ready = 0?
begin
WishboneRead({22'h01, ((10'h0+jj[4:0]*2'h2+1'h1)<<2)}, pointer); // Read TxBD pointer
$display("\t\t\tRead TxBDPointer 0x=%x", pointer);
$write("\t\t\tData:");
for(ii=0; ii<bd[31:16]; ii=ii+4)
begin
WishboneReadData({pointer[31:2], 2'h0}+ii, data_in); // Read data from Tx Pointer
$write("\t0x%x", data_in);
end
end
end
 
 
for(jj=0; jj<3; jj=jj+1) // How many RxBD do we want to read?
begin
WishboneRead({22'h01, ((10'h80+jj[4:0]*2'h2)<<2)}, bd); // Read from RxBD
$display("\n(%0t)\t\tRead RxBD %0x = 0x%x", $time, jj, bd);
if(~bd[15]) // Empty = 0?
begin
WishboneRead({22'h01, ((10'h80+jj[4:0]*2'h2+1'h1)<<2)}, pointer); // Read RxBD pointer
$display("\t\t\tRead RxBDPointer 0x=%x", pointer);
$write("\t\t\tData:");
for(ii=0; ii<bd[31:16]+4; ii=ii+4)
begin
WishboneReadData({pointer[31:2], 2'h0} + ii, data_in); // Read data from Rx Pointer
$write("\t0x%x", data_in);
end
end
end
 
WishboneRead({22'h01, (10'h81<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h82<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h83<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h84<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h85<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h86<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h87<<2)}, data_in); // Read from RxBD register
 
 
 
#100000 $stop;
end
endtask //TestTxAndRx
 
 
reg [7:0] LateCollisionCounter;
reg EnableCollisionCounter;
// Making a late collision
 
initial
EnableCollisionCounter =0; // Collision = OFF
 
always @ (posedge MTxClk)
begin
if(tb_eth_top.ethtop.wishbone.TxStartFrm)
begin
LateCollisionCounter = 0;
end
else
if(EnableCollisionCounter)
LateCollisionCounter = LateCollisionCounter + 1;
end
 
// Making a late collision
always @ (posedge MTxClk)
begin
if(LateCollisionCounter==0)
MColl = 0;
else
if(LateCollisionCounter==150)
MColl = 1;
else
if(LateCollisionCounter==155)
begin
MColl = 0;
MCrs = 0;
EnableCollisionCounter=0;
LateCollisionCounter=1;
end
end
 
 
// Switching Carrier Sense ON and OFF
always @ (posedge MTxClk)
begin
wait(tb_eth_top.ethtop.wishbone.TxStartFrm);
MCrs=1;
wait(tb_eth_top.ethtop.wishbone.TxEndFrm || !MCrs);
MCrs=0;
end
 
 
task TestUnicast;
 
integer ii, jj;
integer data_in, bd, pointer;
 
begin
$display("\nBegin TestUnicast \n");
WishboneWrite(32'h00000800, {26'h0, `ETH_MODER_ADR, 2'h0}); // r_Rst = 1
WishboneWrite(32'h00000000, {26'h0, `ETH_MODER_ADR, 2'h0}); // r_Rst = 0
WishboneWrite(32'h00000080, {26'h0, `ETH_TX_BD_NUM_ADR, 2'h0}); // r_RxBDAddress = 0x80
WishboneWrite(32'h0000204b, {26'h0, `ETH_MODER_ADR, 2'h0}); // RxEn, Txen, CrcEn, no Pad, r_IFG, promisc off, broadcast off
WishboneWrite(32'h00000004, {26'h0, `ETH_CTRLMODER_ADR, 2'h0}); // r_TxFlow = 1
 
$display("\n This Uniicast packet will be rejected, wrong address in MAC Address Regs\n");
ReceivePacket(16'h0014, 1'b0,`UNICAST_XFR);
WishboneWrite(32'h03040506, {26'h0,`ETH_MAC_ADDR0_ADR ,2'h0}); // Mac Address
WishboneWrite(32'h00000002, {26'h0,`ETH_MAC_ADDR1_ADR ,2'h0}); // Mac Address
$display("\n Set Proper Unicast Address in MAC_ADDRESS regs, resend packet\n");
ReceivePacket(16'h0015, 1'b0,`UNICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0016, 1'b0,`MULTICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0017, 1'b0,`UNICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0018, 1'b0,`BROADCAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0019, 1'b0,`UNICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
 
repeat(5000) @ (posedge MRxClk); // Waiting some time for all accesses to finish before reading out the statuses.
 
WishboneRead({26'h0, `ETH_MODER_ADR}, data_in); // Read from MODER register
 
WishboneRead({22'h01, (10'h80<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h81<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h82<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h83<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h84<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h85<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h86<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h87<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h88<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h89<<2)}, data_in); // Read from RxBD register
 
 
for(jj=0; jj<5; jj=jj+1) // How many RxBD do we want to read?
begin
WishboneRead({22'h01, ((10'h80+jj[4:0]*2'h2)<<2)}, bd); // Read from RxBD
$display("\n(%0t)\t\tRead RxBD %0x = 0x%x", $time, jj, bd);
if(~bd[15]) // Empty = 0?
begin
WishboneRead({22'h01, ((10'h80+jj[4:0]*2'h2+1'h1)<<2)}, pointer); // Read RxBD pointer
$display("\t\t\tRead RxBDPointer 0x=%x", pointer);
$write("\t\t\tData:");
for(ii=0; ii<bd[31:16]+4; ii=ii+4)
begin
WishboneReadData({pointer[31:2], 2'h0} + ii, data_in); // Read data from Rx Pointer
$write("\t0x%x", data_in);
end
end
end
 
 
#100000 $stop;
$display("\nEnd TestUnicast \n");
end
endtask //TestUnicast
 
task TestMulticast;
 
integer data_in;
begin
$display("\nBegin TestMulticast \n");
WishboneWrite(32'h00000800, {26'h0, `ETH_MODER_ADR, 2'h0}); // r_Rst = 1
WishboneWrite(32'h00000000, {26'h0, `ETH_MODER_ADR, 2'h0}); // r_Rst = 0
WishboneWrite(32'h00000080, {26'h0, `ETH_TX_BD_NUM_ADR, 2'h0}); // r_RxBDAddress = 0x80
WishboneWrite(32'h00002043, {26'h0, `ETH_MODER_ADR, 2'h0}); // RxEn, Txen, CrcEn, No Pad, r_IFG, promiscuos off, broadcast enable
WishboneWrite(32'h00000004, {26'h0, `ETH_CTRLMODER_ADR, 2'h0}); // r_TxFlow = 1
$display("\n This Multicast packet will be rejected by Hash Filter\n");
ReceivePacket(16'h0014, 1'b0,`MULTICAST_XFR);
WishboneWrite(32'h00400000, {26'h0, `ETH_HASH1_ADR,2'h0}); // set bit 16, multicast hash 36
WishboneRead({26'h0, `ETH_HASH1_ADR, 2'h0}, data_in); // read back
$display("\n Set Hash Filter to accept this Multicast packet, resend packet\n");
ReceivePacket(16'h0015, 1'b0,`MULTICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0016, 1'b0,`MULTICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0017, 1'b0,`MULTICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0018, 1'b0,`MULTICAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
 
repeat(5000) @ (posedge MRxClk); // Waiting some time for all accesses to finish before reading out the statuses.
 
WishboneRead({26'h0, `ETH_MODER_ADR}, data_in); // Read from MODER register
 
WishboneRead({22'h01, (10'h80<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h81<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h82<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h83<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h84<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h85<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h86<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h87<<2)}, data_in); // Read from RxBD register
$display("\nEnd TestMulticast \n");
#100000 $stop;
end
endtask //TestMulticast
 
 
task TestBroadcast;
 
integer data_in;
 
begin
$display("\n\n\nBegin TestBroadcast");
WishboneWrite(32'h00000800, {26'h0, `ETH_MODER_ADR, 2'h0}); // r_Rst = 1
WishboneWrite(32'h00000000, {26'h0, `ETH_MODER_ADR, 2'h0}); // r_Rst = 0
WishboneWrite(32'h00000080, {26'h0, `ETH_TX_BD_NUM_ADR, 2'h0}); // r_RxBDAddress = 0x80
 
WishboneWrite(32'h0000A04b, {26'h0, `ETH_MODER_ADR, 2'h0}); // PadEn, CrcEn, IFG=accept, Reject Broadcast, TxEn, RxEn
WishboneWrite(32'h00000004, {26'h0, `ETH_CTRLMODER_ADR, 2'h0}); // r_TxFlow = 1
 
$display("\nThis Broadcast packet will be rejected, r_BRO = 1");
ReceivePacket(16'h0014, 1'b0,`BROADCAST_XFR);
$display("\nSet r_Bro = 0, resend packet");
WishboneWrite(32'h0000A043, {26'h0, `ETH_MODER_ADR, 2'h0}); // PadEn, CrcEn, IFG=accept, Accept Broadcast, TxEn, RxEn
ReceivePacket(16'h0015, 1'b0,`BROADCAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
 
$display("\n This Broadcast packet will be rejected, r_BRO = 1");
WishboneWrite(32'h0000A04b, {26'h0, `ETH_MODER_ADR, 2'h0}); // PadEn, CrcEn, IFG=accept, Reject Broadcast, TxEn, RxEn
ReceivePacket(16'h0016, 1'b0,`BROADCAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
ReceivePacket(16'h0017, 1'b0,`BROADCAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
 
$display("\n Set r_Bro = 0, resend packet");
WishboneWrite(32'h0000A043, {26'h0, `ETH_MODER_ADR, 2'h0}); // PadEn, CrcEn, IFG=accept, Accept Broadcast, TxEn, RxEn
ReceivePacket(16'h0018, 1'b0,`BROADCAST_XFR); // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
 
repeat(5000) @ (posedge MRxClk); // Waiting some time for all accesses to finish before reading out the statuses.
 
WishboneRead({26'h0, `ETH_MODER_ADR}, data_in); // Read from MODER register
 
WishboneRead({22'h01, (10'h80<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h81<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h82<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h83<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h84<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h85<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h86<<2)}, data_in); // Read from RxBD register
WishboneRead({22'h01, (10'h87<<2)}, data_in); // Read from RxBD register
 
#100000 $stop;
$display("\nEnd TestBroadcast \n");
end
endtask //TestBroadcast
 
 
always @ (posedge WB_CLK_I)
begin
if(m_wb_cyc_o & m_wb_stb_o) // Add valid address range
begin
repeat(3) @ (posedge WB_CLK_I);
begin
m_wb_ack_i <=#Tp 1'b1;
if(~m_wb_we_o)
begin
#Tp;
if(m_wb_adr_o[1:0] == 2'b00) // word access
begin
m_wb_dat_i[31:24] = memory3[{m_wb_adr_o[31:2], 2'h0}];
m_wb_dat_i[23:16] = memory2[{m_wb_adr_o[31:2], 2'h0}];
m_wb_dat_i[15:08] = memory1[{m_wb_adr_o[31:2], 2'h0}];
m_wb_dat_i[07:00] = memory0[{m_wb_adr_o[31:2], 2'h0}];
end
else if(m_wb_adr_o[1:0] == 2'b10) // half access
begin
m_wb_dat_i[31:24] = 0;
m_wb_dat_i[23:16] = 0;
m_wb_dat_i[15:08] = memory1[{m_wb_adr_o[31:2], 2'h0}];
m_wb_dat_i[07:00] = memory0[{m_wb_adr_o[31:2], 2'h0}];
end
else if(m_wb_adr_o[1:0] == 2'b01) // byte access
begin
m_wb_dat_i[31:24] = 0;
m_wb_dat_i[23:16] = memory2[{m_wb_adr_o[31:2], 2'h0}];
m_wb_dat_i[15:08] = 0;
m_wb_dat_i[07:00] = 0;
end
else if(m_wb_adr_o[1:0] == 2'b11) // byte access
begin
m_wb_dat_i[31:24] = 0;
m_wb_dat_i[23:16] = 0;
m_wb_dat_i[15:08] = 0;
m_wb_dat_i[07:00] = memory0[{m_wb_adr_o[31:2], 2'h0}];
end
 
$fdisplay(mcd1, "(%0t) master read (0x%0x) = 0x%0x", $time, m_wb_adr_o, m_wb_dat_i);
end
else
begin
$fdisplay(mcd2, "(%0t) master write (0x%0x) = 0x%0x", $time, m_wb_adr_o, m_wb_dat_o);
if(m_wb_sel_o[0])
memory0[m_wb_adr_o] = m_wb_dat_o[7:0];
if(m_wb_sel_o[1])
memory1[m_wb_adr_o] = m_wb_dat_o[15:8];
if(m_wb_sel_o[2])
memory2[m_wb_adr_o] = m_wb_dat_o[23:16];
if(m_wb_sel_o[3])
memory3[m_wb_adr_o] = m_wb_dat_o[31:24];
end
end
@ (posedge WB_CLK_I);
m_wb_ack_i <=#Tp 1'b0;
end
end
 
 
 
// Detecting ram_oe and ram_we being active at the same time
always @ (posedge WB_CLK_I)
begin
if(tb_eth_top.ethtop.wishbone.ram_we & tb_eth_top.ethtop.wishbone.ram_oe)
begin
$display("\n\n(%0t)ERROR: ram_we and ram_oe both activated at the same time", $time);
#1000;
$stop;
end
end
 
 
 
 
always @ (posedge WB_CLK_I)
if(tb_eth_top.ethtop.wishbone.RxStatusWrite)
$fdisplay(mcd2, ""); // newline added
 
task WishboneWrite;
input [31:0] Data;
input [31:0] Address;
integer ii;
 
begin
wait (~WishboneBusy);
WishboneBusy = 1;
@ (posedge WB_CLK_I);
#1;
WB_ADR_I = Address;
WB_DAT_I = Data;
WB_WE_I = 1'b1;
WB_CYC_I = 1'b1;
WB_STB_I = 1'b1;
WB_SEL_I = 4'hf;
 
 
wait(WB_ACK_O); // waiting for acknowledge response
 
// Writing information about the access to the screen
@ (posedge WB_CLK_I);
if(LogEnable)
begin
if(~Address[11] & ~Address[10])
$write("\n(%0t) Write to register (Data: 0x%x, Reg. Addr: 0x%0x)", $time, Data, Address);
else
if(~Address[11] & Address[10])
if(Address[9:2] < tb_eth_top.ethtop.r_TxBDNum)
begin
$write("\n(%0t) Write to TxBD (Data: 0x%x, TxBD Addr: 0x%0x)", $time, Data, Address);
if(Address[9:2] == tb_eth_top.ethtop.r_TxBDNum-2'h2)
$write("(%0t) Send Control packet\n", $time);
end
else
$write("\n(%0t) Write to RxBD (Data: 0x%x, RxBD Addr: 0x%0x)", $time, Data, Address);
else
$write("\n(%0t) WB write ?????????????? Data: 0x%x Addr: 0x%0x", $time, Data, Address);
end
#1;
WB_ADR_I = 32'hx;
WB_DAT_I = 32'hx;
WB_WE_I = 1'bx;
WB_CYC_I = 1'b0;
WB_STB_I = 1'b0;
WB_SEL_I = 4'hx;
#5 WishboneBusy = 0;
end
endtask
 
 
task WishboneRead;
input [31:0] Address;
output[31:0] data;
 
begin
wait (~WishboneBusy);
WishboneBusy = 1;
@ (posedge WB_CLK_I);
#1;
WB_ADR_I = Address;
WB_WE_I = 1'b0;
WB_CYC_I = 1'b1;
WB_STB_I = 1'b1;
WB_SEL_I = 4'hf;
#3;
wait(WB_ACK_O); // waiting for acknowledge response
@ (posedge WB_CLK_I);
data = WB_DAT_O;
if(~Address[11] & ~Address[10])
// $write("\n(%0t) Read from register (Data: 0x%x, Reg. Addr: 0x%0x)", $time, WB_DAT_O, Address);
$write("\n(%0t) Read from register (Data: 0x%x, Reg. Addr: 0x%0x)", $time, data, Address);
else
if(~Address[11] & Address[10])
if(Address[9:2] < tb_eth_top.ethtop.r_TxBDNum)
// ; //$write("\n(%0t) Read from TxBD (Data: 0x%x, TxBD Addr: 0x%0x)", $time, WB_DAT_O, Address);
; //$write("\n(%0t) Read from TxBD (Data: 0x%x, TxBD Addr: 0x%0x)", $time, data, Address);
else
// ;//$write("\n(%0t) Read from RxBD (Data: 0x%x, RxBD Addr: 0x%0x)", $time, WB_DAT_O, Address);
;//$write("\n(%0t) Read from RxBD (Data: 0x%x, RxBD Addr: 0x%0x)", $time, data, Address);
else
// $write("\n(%0t) WB read ????????? Data: 0x%x Addr: 0x%0x", $time, WB_DAT_O, Address);
$write("\n(%0t) WB read ????????? Data: 0x%x Addr: 0x%0x", $time, data, Address);
#1;
WB_ADR_I = 32'hx;
WB_WE_I = 1'bx;
WB_CYC_I = 1'b0;
WB_STB_I = 1'b0;
WB_SEL_I = 4'hx;
#5 WishboneBusy = 0;
end
endtask
 
 
 
task WishboneReadData;
input [31:0] Address;
output[31:0] data;
 
begin
@ (posedge WB_CLK_I);
data = {memory3[Address], memory2[Address], memory1[Address], memory0[Address]};
#5;
end
endtask
 
 
task WishboneWriteData;
input [31:0] Address;
input [31:0] data;
input [3:0] Select;
 
begin
@ (posedge WB_CLK_I);
if(Select[0])
memory0[Address] = data[7:0];
if(Select[1])
memory1[Address] = data[15:8];
if(Select[2])
memory2[Address] = data[23:16];
if(Select[3])
memory3[Address] = data[31:24];
// $display("\n(%0t) Write data to memory (Data: 0x%x, Addr: 0x%0x)", $time, data, Address);
#5;
end
endtask
 
 
 
 
task SendPacket;
input [15:0] Length;
input ControlFrame;
reg Wrap;
reg [31:0] TempAddr;
reg [31:0] TempData;
reg [31:0] kk;
begin
// if(TxBDIndex == 6) // Only 3 buffer descriptors are used
// Wrap = 1'b1;
// else
Wrap = 1'b0; // At the moment no wrap bit is set
 
 
// Writing data to buffer
for(kk=0; kk<Length; kk=kk+4)
begin
TempAddr = `TX_BUF_BASE + TxBDIndex * 32'h600 + kk;
TempData = {kk[7:0], kk[7:0]+2'h1, kk[7:0]+2'h2, kk[7:0]+2'h3};
WishboneWriteData(TempAddr, TempData, 4'hf); // Writing Data to buffer that is pointed by the BD
end
 
// Writing buffer pointer
TempAddr = {22'h01, ((TxBDIndex*2'h2 + 1'b1)<<2)};
TempData = `TX_BUF_BASE + TxBDIndex * 32'h600; // 1536 bytes is reserved for one frame
WishboneWrite(TempData, TempAddr); // Writing Tx pointer
 
TempAddr = {22'h01, ((TxBDIndex*2'h2)<<2)};
TempData = {Length[15:0], 1'b1, 1'b0, Wrap, 3'h0, ControlFrame, 1'b0, TxBDIndex[7:0]}; // Ready and Wrap = 1
 
#1;
// if(TxBDIndex == 6) // Only 4 buffer descriptors are used
// TxBDIndex = 0;
// else
TxBDIndex = TxBDIndex + 1;
 
WishboneWrite(TempData, TempAddr); // Writing status to TxBD
end
endtask
 
 
 
task SendPacketX;
input [15:0] Length;
input ControlFrame;
input [1:0] AddrOffset;
reg Wrap;
reg [31:0] TempAddr;
reg [31:0] TempData;
reg [31:0] kk;
reg [3:0] Select;
begin
Wrap = 1'b0;
 
case(AddrOffset)
2'h0 : Select = 4'hf;
2'h1 : Select = 4'h7;
2'h2 : Select = 4'h3;
2'h3 : Select = 4'h1;
endcase
 
// Writing data to buffer
for(kk=0; kk<Length+4; kk=kk+4) // Length+4 is because we might start up to 3 bytes later
begin
if(kk>0)
Select = 4'hf;
TempAddr = `TX_BUF_BASE + TxBDIndex * 32'h600 + kk;
TempData = {kk[7:0]+3'h1, kk[7:0]+3'h2, kk[7:0]+3'h3, kk[7:0]+3'h4};
WishboneWriteData(TempAddr, TempData, Select); // Writing Data to buffer that is pointed by the BD
end
 
// Writing buffer pointer
TempAddr = {22'h01, ((TxBDIndex*2'h2 + 1'b1)<<2)};
TempData = `TX_BUF_BASE + TxBDIndex * 32'h600 + AddrOffset; // 1536 bytes is reserved for one frame
WishboneWrite(TempData, TempAddr); // Writing Tx pointer
 
TempAddr = {22'h01, ((TxBDIndex*2'h2)<<2)};
TempData = {Length[15:0], 1'b1, 1'b1, Wrap, 3'h0, ControlFrame, 1'b0, TxBDIndex[7:0]}; // Ready, interrupt and Wrap = 1
 
#1;
if(Wrap)
TxBDIndex = 0;
else
TxBDIndex = TxBDIndex + 1;
 
WishboneWrite(TempData, TempAddr); // Writing status to TxBD
end
endtask
 
 
 
task ReceivePacket; // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
input [15:0] LengthRx;
input RxControlFrame;
input [31:0] TransferType; //Broadcast,Unicast,Multicast
reg WrapRx;
reg [31:0] TempRxAddr;
// reg [31:0] TempRxData;
integer TempRxData;
reg abc;
begin
// if(RxBDIndex == 6) // Only 3 buffer descriptors are used
// WrapRx = 1'b1;
// else
WrapRx = 1'b0;
 
TempRxAddr = {22'h01, ((tb_eth_top.ethtop.r_TxBDNum + RxBDIndex*2'h2 + 1'b1)<<2)};
TempRxData = `RX_BUF_BASE + RxBDIndex * 32'h600; // 1536 bytes is reserved for one frame
WishboneWrite(TempRxData, TempRxAddr); // Writing Rx pointer
 
TempRxAddr = {22'h01, ((tb_eth_top.ethtop.r_TxBDNum + RxBDIndex*2'h2)<<2)};
TempRxData = {16'h0, 1'b1, 1'b0, WrapRx, 5'h0, RxBDIndex[7:0]}; // Ready and WrapRx = 1 or 0
 
#1;
// if(RxBDIndex == 6) // Only 4 buffer descriptors are used
// RxBDIndex = 0;
// else
RxBDIndex = RxBDIndex + 1;
 
abc=1;
WishboneWrite(TempRxData, TempRxAddr); // Writing status to RxBD
abc=0;
 
begin
#200;
if(RxControlFrame)
GetControlDataOnMRxD(LengthRx); // LengthRx = PAUSE timer value.
else
GetDataOnMRxD(LengthRx, TransferType); // LengthRx bytes is comming on MRxD[3:0] signals
end
 
end
endtask
 
 
task ReceivePacketX; // Initializes RxBD and then generates traffic on the MRxD[3:0] signals.
input [15:0] LengthRx;
input RxControlFrame;
input [31:0] TransferType; //Broadcast,Unicast,Multicast
input [1:0] AddrOffset;
reg WrapRx;
reg [31:0] TempRxAddr;
integer TempRxData;
reg abc;
begin
WrapRx = 1'b0;
 
TempRxAddr = {22'h01, ((tb_eth_top.ethtop.r_TxBDNum + RxBDIndex*2'h2 + 1'b1)<<2)};
TempRxData = `RX_BUF_BASE + RxBDIndex * 32'h600 + AddrOffset; // 1536 bytes is reserved for one frame
WishboneWrite(TempRxData, TempRxAddr); // Writing Rx pointer
 
TempRxAddr = {22'h01, ((tb_eth_top.ethtop.r_TxBDNum + RxBDIndex*2'h2)<<2)};
TempRxData = {16'h0, 1'b1, 1'b1, WrapRx, 5'h0, RxBDIndex[7:0]}; // Ready, interrupt and WrapRx = 1 or 0
 
#1;
RxBDIndex = RxBDIndex + 1;
 
abc=1;
WishboneWrite(TempRxData, TempRxAddr); // Writing status to RxBD
abc=0;
 
begin
#200;
if(RxControlFrame)
GetControlDataOnMRxD(LengthRx); // LengthRx = PAUSE timer value.
else
GetDataOnMRxD(LengthRx, TransferType); // LengthRx bytes is comming on MRxD[3:0] signals
end
 
end
endtask
 
 
task GetDataOnMRxD;
input [15:0] Len;
input [31:0] TransferType;
integer tt;
 
begin
@ (posedge MRxClk);
MRxDV=1'b1;
for(tt=0; tt<15; tt=tt+1)
begin
MRxD=4'h5; // preamble
@ (posedge MRxClk);
end
MRxD=4'hd; // SFD
for(tt=1; tt<(Len+1); tt=tt+1)
begin
@ (posedge MRxClk);
if(TransferType == `UNICAST_XFR && tt == 1)
MRxD= 4'h0; // Unicast transfer
else if(TransferType == `BROADCAST_XFR && tt < 7)
MRxD = 4'hf;
else
MRxD=tt[3:0]; // Multicast transfer
 
@ (posedge MRxClk);
if(TransferType == `BROADCAST_XFR && tt < 7)
MRxD = 4'hf;
else
MRxD=tt[7:4];
end
 
@ (posedge MRxClk);
MRxDV=1'b0;
end
endtask
 
 
task GetControlDataOnMRxD;
input [15:0] Timer;
reg [127:0] Packet;
reg [127:0] Data;
reg [31:0] Crc;
integer tt;
 
begin
Packet = 128'h10082C000010_deadbeef0013_8880_0010; // 0180c2000001 + 8808 + 0001
Crc = 32'h6014fe08; // not a correct value
@ (posedge MRxClk);
MRxDV=1'b1;
for(tt=0; tt<15; tt=tt+1)
begin
MRxD=4'h5; // preamble
@ (posedge MRxClk);
end
MRxD=4'hd; // SFD
for(tt=0; tt<32; tt=tt+1)
begin
Data = Packet << (tt*4);
@ (posedge MRxClk);
MRxD=Data[127:124];
end
for(tt=0; tt<2; tt=tt+1) // timer
begin
Data[15:0] = Timer << (tt*8);
@ (posedge MRxClk);
MRxD=Data[11:8];
@ (posedge MRxClk);
MRxD=Data[15:12];
end
for(tt=0; tt<42; tt=tt+1) // padding
begin
Data[7:0] = 8'h0;
@ (posedge MRxClk);
MRxD=Data[3:0];
@ (posedge MRxClk);
MRxD=Data[3:0];
end
for(tt=0; tt<4; tt=tt+1) // crc
begin
Data[31:0] = Crc << (tt*8);
@ (posedge MRxClk);
MRxD=Data[27:24];
@ (posedge MRxClk);
MRxD=Data[31:28];
end
@ (posedge MRxClk);
MRxDV=1'b0;
end
endtask
 
task InitializeMemory;
reg [9:0] mem_addr;
begin
LogEnable = 1'b0;
$display("\n\n(%0t) Initializing Memory...", $time);
for(mem_addr=0; mem_addr<=10'h0ff; mem_addr=mem_addr+1'b1)
WishboneWrite(32'h0, {22'h01, mem_addr<<2}); // Writing status to RxBD
LogEnable = 1'b1;
end
endtask
 
 
`endif
 
 
endmodule

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