| Line 25... |
Line 25... |
(
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(
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output gmii_txclk,
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output gmii_txclk,
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output reg gmii_txctrl,
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output reg gmii_txctrl,
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output reg [7:0] gmii_txdata
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output reg [7:0] gmii_txdata
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);
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);
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parameter giga_mode = 1;
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|
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reg gmii_txclk_offset;
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reg gmii_txclk_offset;
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initial begin
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initial begin
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gmii_txclk_offset = 1'b0;
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gmii_txclk_offset = 1'b0;
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forever #4 gmii_txclk_offset = !gmii_txclk_offset;
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forever #4 gmii_txclk_offset = !gmii_txclk_offset;
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| Line 41... |
Line 42... |
reg eof_tx;
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reg eof_tx;
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reg pcap_endian_tx;
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reg pcap_endian_tx;
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reg [31:0] pcap_4bytes_tx;
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reg [31:0] pcap_4bytes_tx;
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reg [31:0] packet_leng_tx;
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reg [31:0] packet_leng_tx;
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reg [ 7:0] packet_byte_tx;
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reg [ 7:0] packet_byte_tx;
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generate
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if (giga_mode) begin
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initial
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initial
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begin : feeder_tx
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begin : feeder_tx
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gmii_txctrl = 1'b0;
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gmii_txctrl = 1'b0;
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gmii_txdata = 4'd0;
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gmii_txdata = 8'd0;
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#100;
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#100;
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feeder_file_tx = $fopen("ptpdv2_tx.pcap","rb");
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feeder_file_tx = $fopen("ptpdv2_tx.pcap","rb");
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if (feeder_file_tx == 0)
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if (feeder_file_tx == 0)
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begin
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begin
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$display("Failed to open ptpdv2_tx.pcap!");
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$display("Failed to open ptpdv2_tx.pcap!");
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| Line 124... |
Line 128... |
$fclose(feeder_file_tx);
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$fclose(feeder_file_tx);
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gmii_txctrl = 1'b0;
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gmii_txctrl = 1'b0;
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gmii_txdata = 8'h00;
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gmii_txdata = 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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end
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else begin
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initial
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begin : feeder_tx
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gmii_txctrl = 1'b0;
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gmii_txdata = 4'd0;
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#100;
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feeder_file_tx = $fopen("ptpdv2_tx.pcap","rb");
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if (feeder_file_tx == 0)
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begin
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$display("Failed to open ptpdv2_tx.pcap!");
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disable feeder_tx;
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end
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else
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begin
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// test pcap file endian
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r_tx = $fread(pcap_4bytes_tx, feeder_file_tx);
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pcap_endian_tx = (pcap_4bytes_tx == 32'ha1b2c3d4)? 1:0;
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s_tx = $fseek(feeder_file_tx, -4, 1);
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// skip pcap file header 24*8
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s_tx = $fseek(feeder_file_tx, 24, 1);
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// read packet content
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eof_tx = 0;
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num_tx = 0;
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while (!eof_tx & !$feof(feeder_file_tx))
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begin : fileread_loop
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// skip frame header (8+4)*8
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start_addr_tx = $ftell(feeder_file_tx);
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s_tx = $fseek(feeder_file_tx, 8+4, 1);
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// get frame length big endian 4*8
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r_tx = $fread(packet_leng_tx, feeder_file_tx);
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packet_leng_tx = pcap_endian_tx?
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{packet_leng_tx[31:24], packet_leng_tx[23:16], packet_leng_tx[15: 8], packet_leng_tx[ 7: 0]}:
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{packet_leng_tx[ 7: 0], packet_leng_tx[15: 8], packet_leng_tx[23:16], packet_leng_tx[31:24]};
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// check whether end of file
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if (r_tx == 0)
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begin
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eof_tx = 1;
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@(posedge gmii_txclk_offset);
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gmii_txctrl = 1'b0;
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gmii_txdata = 4'h0;
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@(posedge gmii_txclk_offset);
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gmii_txctrl = 1'b0;
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gmii_txdata = 4'h0;
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disable fileread_loop;
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end
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// send ifg 96bit=12*8
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repeat (12)
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begin
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@(posedge gmii_txclk_offset)
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gmii_txctrl = 1'b0;
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gmii_txdata = 4'h0;
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@(posedge gmii_txclk_offset)
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gmii_txctrl = 1'b0;
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gmii_txdata = 4'h0;
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end
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// send frame preamble and sfd 55555555555555d5=8*8
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repeat (7)
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begin
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@(posedge gmii_txclk_offset);
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gmii_txctrl = 1'b1;
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gmii_txdata = 4'h5;
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@(posedge gmii_txclk_offset);
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gmii_txctrl = 1'b1;
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gmii_txdata = 4'h5;
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end
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@(posedge gmii_txclk_offset)
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gmii_txctrl = 1'b1;
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gmii_txdata = 4'h5;
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@(posedge gmii_txclk_offset)
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gmii_txctrl = 1'b1;
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gmii_txdata = 4'hd;
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// send frame content
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for (index_tx=0; index_tx<packet_leng_tx; index_tx=index_tx+1)
|
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begin
|
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r_tx = $fread(packet_byte_tx, feeder_file_tx);
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@(posedge gmii_txclk_offset);
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gmii_txctrl = 1'b1;
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gmii_txdata = packet_byte_tx[3:0];
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@(posedge gmii_txclk_offset);
|
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gmii_txctrl = 1'b1;
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gmii_txdata = packet_byte_tx[7:4];
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// check whether end of file
|
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if (r_tx == 0)
|
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begin
|
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eof_tx = 1;
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@(posedge gmii_txclk_offset);
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gmii_txctrl = 1'b0;
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gmii_txdata = 4'h0;
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@(posedge gmii_txclk_offset);
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gmii_txctrl = 1'b0;
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gmii_txdata = 4'h0;
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disable fileread_loop;
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end
|
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end
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end_addr_tx = $ftell(feeder_file_tx);
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num_tx = num_tx + 1;
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end
|
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$fclose(feeder_file_tx);
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gmii_txctrl = 1'b0;
|
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gmii_txdata = 4'h0;
|
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end
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end
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end
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endgenerate
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endmodule
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endmodule
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No newline at end of file
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No newline at end of file
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