/*
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/*
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* $gmii_rx_bfm.v
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* $gmii_rx_bfm.v
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*
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*
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* Copyright (c) 2012, BBY&HW. All rights reserved.
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* Copyright (c) 2012, BBY&HW. All rights reserved.
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*
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*
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* This library is free software; you can redistribute it and/or
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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* version 2.1 of the License, or (at your option) any later version.
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*
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*
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* This library is distributed in the hope that it will be useful,
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* Lesser General Public License for more details.
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*
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*
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* You should have received a copy of the GNU Lesser General Public
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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* MA 02110-1301 USA
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*/
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*/
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`timescale 1ns/1ns
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`timescale 1ns/1ns
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module gmii_rx_bfm
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module gmii_rx_bfm
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(
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(
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output gmii_rxclk,
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output gmii_rxclk,
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output reg gmii_rxctrl,
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output reg gmii_rxctrl,
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output reg [7:0] gmii_rxdata
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output reg [7:0] gmii_rxdata
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);
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);
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reg gmii_rxclk_offset;
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reg gmii_rxclk_offset;
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initial begin
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initial begin
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gmii_rxclk_offset = 1'b0;
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gmii_rxclk_offset = 1'b0;
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forever #4 gmii_rxclk_offset = !gmii_rxclk_offset;
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forever #4 gmii_rxclk_offset = !gmii_rxclk_offset;
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end
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end
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assign #2 gmii_rxclk = gmii_rxclk_offset;
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assign #2 gmii_rxclk = gmii_rxclk_offset;
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integer feeder_file_rx, r_rx;
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integer feeder_file_rx, r_rx, s_rx;
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integer start_addr_rx, end_addr_rx;
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integer start_addr_rx, end_addr_rx;
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integer index_rx, num_rx;
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integer index_rx, num_rx;
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reg eof_rx;
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reg eof_rx;
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reg pcap_endian_rx;
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reg pcap_endian_rx;
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reg [31:0] pcap_4bytes_rx;
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reg [31:0] pcap_4bytes_rx;
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reg [31:0] packet_leng_rx;
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reg [31:0] packet_leng_rx;
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reg [ 7:0] packet_byte_rx;
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reg [ 7:0] packet_byte_rx;
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initial
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initial
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begin : feeder_rx
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begin : feeder_rx
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gmii_rxctrl = 1'b0;
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gmii_rxctrl = 1'b0;
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gmii_rxdata = 4'd0;
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gmii_rxdata = 4'd0;
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#100;
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#100;
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feeder_file_rx = $fopen("ptpdv2_rx.pcap","rb");
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feeder_file_rx = $fopen("ptpdv2_rx.pcap","rb");
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if (feeder_file_rx == 0)
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if (feeder_file_rx == 0)
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begin
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begin
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$display("Failed to open ptpdv2_rx.pcap!");
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$display("Failed to open ptpdv2_rx.pcap!");
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disable feeder_rx;
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disable feeder_rx;
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end
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end
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else
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else
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begin
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begin
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// test pcap file endian
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// test pcap file endian
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r_rx = $fread(pcap_4bytes_rx, feeder_file_rx);
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r_rx = $fread(pcap_4bytes_rx, feeder_file_rx);
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pcap_endian_rx = (pcap_4bytes_rx == 32'ha1b2c3d4)? 1:0;
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pcap_endian_rx = (pcap_4bytes_rx == 32'ha1b2c3d4)? 1:0;
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$fseek(feeder_file_rx, -4, 1);
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s_rx = $fseek(feeder_file_rx, -4, 1);
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// skip pcap file header 24*8
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// skip pcap file header 24*8
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$fseek(feeder_file_rx, 24, 1);
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s_rx = $fseek(feeder_file_rx, 24, 1);
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// read packet content
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// read packet content
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eof_rx = 0;
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eof_rx = 0;
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num_rx = 0;
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num_rx = 0;
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while (!eof_rx & !$feof(feeder_file_rx))
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while (!eof_rx & !$feof(feeder_file_rx))
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begin : fileread_loop
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begin : fileread_loop
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// skip frame header (8+4)*8
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// skip frame header (8+4)*8
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start_addr_rx = $ftell(feeder_file_rx);
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start_addr_rx = $ftell(feeder_file_rx);
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$fseek(feeder_file_rx, 8+4, 1);
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s_rx = $fseek(feeder_file_rx, 8+4, 1);
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// get frame length big endian 4*8
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// get frame length big endian 4*8
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r_rx = $fread(packet_leng_rx, feeder_file_rx);
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r_rx = $fread(packet_leng_rx, feeder_file_rx);
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packet_leng_rx = pcap_endian_rx?
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packet_leng_rx = pcap_endian_rx?
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{packet_leng_rx[31:24], packet_leng_rx[23:16], packet_leng_rx[15: 8], packet_leng_rx[ 7: 0]}:
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{packet_leng_rx[31:24], packet_leng_rx[23:16], packet_leng_rx[15: 8], packet_leng_rx[ 7: 0]}:
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{packet_leng_rx[ 7: 0], packet_leng_rx[15: 8], packet_leng_rx[23:16], packet_leng_rx[31:24]};
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{packet_leng_rx[ 7: 0], packet_leng_rx[15: 8], packet_leng_rx[23:16], packet_leng_rx[31:24]};
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// check whether end of file
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// check whether end of file
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if (r_rx == 0)
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if (r_rx == 0)
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begin
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begin
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eof_rx = 1;
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eof_rx = 1;
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@(posedge gmii_rxclk_offset);
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@(posedge gmii_rxclk_offset);
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gmii_rxctrl = 1'b0;
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gmii_rxctrl = 1'b0;
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gmii_rxdata = 8'h00;
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gmii_rxdata = 8'h00;
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disable fileread_loop;
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disable fileread_loop;
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end
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end
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// send ifg 96bit=12*8
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// send ifg 96bit=12*8
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repeat (12)
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repeat (12)
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begin
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begin
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@(posedge gmii_rxclk_offset)
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@(posedge gmii_rxclk_offset)
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gmii_rxctrl = 1'b0;
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gmii_rxctrl = 1'b0;
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gmii_rxdata = 8'h00;
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gmii_rxdata = 8'h00;
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end
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end
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// send frame preamble and sfd 5555555d=4*8
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// send frame preamble and sfd 5555555d=4*8
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repeat (3)
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repeat (3)
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begin
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begin
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@(posedge gmii_rxclk_offset);
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@(posedge gmii_rxclk_offset);
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gmii_rxctrl = 1'b1;
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gmii_rxctrl = 1'b1;
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gmii_rxdata = 8'h55;
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gmii_rxdata = 8'h55;
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end
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end
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@(posedge gmii_rxclk_offset)
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@(posedge gmii_rxclk_offset)
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gmii_rxctrl = 1'b1;
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gmii_rxctrl = 1'b1;
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gmii_rxdata = 8'h5d;
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gmii_rxdata = 8'h5d;
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// send frame content
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// send frame content
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for (index_rx=0; index_rx<packet_leng_rx; index_rx=index_rx+1)
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for (index_rx=0; index_rx<packet_leng_rx; index_rx=index_rx+1)
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begin
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begin
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r_rx = $fread(packet_byte_rx, feeder_file_rx);
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r_rx = $fread(packet_byte_rx, feeder_file_rx);
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@(posedge gmii_rxclk_offset);
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@(posedge gmii_rxclk_offset);
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gmii_rxctrl = 1'b1;
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gmii_rxctrl = 1'b1;
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gmii_rxdata = packet_byte_rx;
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gmii_rxdata = packet_byte_rx;
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// check whether end of file
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// check whether end of file
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if (r_rx == 0)
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if (r_rx == 0)
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begin
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begin
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eof_rx = 1;
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eof_rx = 1;
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@(posedge gmii_rxclk_offset);
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@(posedge gmii_rxclk_offset);
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gmii_rxctrl = 1'b0;
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gmii_rxctrl = 1'b0;
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gmii_rxdata = 8'h00;
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gmii_rxdata = 8'h00;
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disable fileread_loop;
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disable fileread_loop;
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end
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end
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end
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end
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end_addr_rx = $ftell(feeder_file_rx);
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end_addr_rx = $ftell(feeder_file_rx);
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num_rx = num_rx + 1;
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num_rx = num_rx + 1;
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end
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end
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$fclose(feeder_file_rx);
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$fclose(feeder_file_rx);
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gmii_rxctrl = 1'b0;
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gmii_rxctrl = 1'b0;
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gmii_rxdata = 8'h00;
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gmii_rxdata = 8'h00;
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end
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end
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end
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end
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endmodule
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endmodule
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