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[/] [ha1588/] [trunk/] [sim/] [top/] [nic_drv_bfm/] [gmii_tx_bfm.v] - Blame information for rev 54

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1 34 edn_walter 
/*
2 38 edn_walter 
 * gmii_tx_bfm.v
3 34 edn_walter 
 *
4 37 edn_walter 
 * Copyright (c) 2012, BABY&HW. All rights reserved.
5 34 edn_walter 
 *
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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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 * 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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 *
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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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 * 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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 *
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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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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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 * MA 02110-1301  USA
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 */
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22 24 edn_walter 
`timescale 1ns/1ns
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24 
module gmii_tx_bfm
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  (
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    output           gmii_txclk,
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    output reg       gmii_txctrl,
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    output reg [7:0] gmii_txdata
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  );
30 54 edn_walter 
    parameter        giga_mode = 1;
31 24 edn_walter 
 
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reg gmii_txclk_offset;
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initial begin
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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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end
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assign #2 gmii_txclk = gmii_txclk_offset;
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39 37 edn_walter 
integer feeder_file_tx, r_tx, s_tx;
40 24 edn_walter 
integer start_addr_tx, end_addr_tx;
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integer index_tx, num_tx;
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reg eof_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] packet_leng_tx;
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reg [ 7:0] packet_byte_tx;
47 54 edn_walter 
 
48 
generate
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if (giga_mode) begin
50 24 edn_walter 
initial
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begin : feeder_tx
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    gmii_txctrl   = 1'b0;
53 54 edn_walter 
    gmii_txdata = 8'd0;
54 24 edn_walter 
    #100;
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    feeder_file_tx = $fopen("nic_drv_bfm/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;
66 37 edn_walter 
        s_tx = $fseek(feeder_file_tx, -4, 1);
67 24 edn_walter 
        // skip pcap file header 24*8
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        s_tx = $fseek(feeder_file_tx, 24, 1);
69 24 edn_walter 
        // read packet content
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        eof_tx = 0;
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        num_tx = 0;
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        while (!eof_tx & !$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);
76 37 edn_walter 
            s_tx = $fseek(feeder_file_tx, 8+4, 1);
77 24 edn_walter 
            // 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 = 8'h00;
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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 = 8'h00;
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            end
98 52 edn_walter 
            // send frame preamble and sfd 55555555555555d5=8*8
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            repeat (7)
100 24 edn_walter 
            begin
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                @(posedge gmii_txclk_offset);
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                gmii_txctrl = 1'b1;
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                gmii_txdata = 8'h55;
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            end
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                @(posedge gmii_txclk_offset)
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                gmii_txctrl = 1'b1;
107 52 edn_walter 
                gmii_txdata = 8'hd5;
108 24 edn_walter 
            // send frame content
109 
            for (index_tx=0; index_tx<packet_leng_tx; index_tx=index_tx+1)
110 
            begin
111 
                r_tx = $fread(packet_byte_tx, feeder_file_tx);
112 
                @(posedge gmii_txclk_offset);
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                gmii_txctrl = 1'b1;
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                gmii_txdata = packet_byte_tx;
115 
                // check whether end of file
116 
                if (r_tx == 0)
117 
                begin
118 
                    eof_tx = 1;
119 
                    @(posedge gmii_txclk_offset);
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                    gmii_txctrl = 1'b0;
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                    gmii_txdata = 8'h00;
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                    disable fileread_loop;
123 
                end
124 
            end
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            end_addr_tx = $ftell(feeder_file_tx);
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            num_tx = num_tx + 1;
127 
        end
128 
        $fclose(feeder_file_tx);
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        gmii_txctrl = 1'b0;
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        gmii_txdata = 8'h00;
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    end
132 
end
133 54 edn_walter 
end
134 
else begin
135 
initial
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begin : feeder_tx
137 
    gmii_txctrl = 1'b0;
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    gmii_txdata = 4'd0;
139 
    #100;
140 
    feeder_file_tx = $fopen("nic_drv_bfm/ptpdv2_tx.pcap","rb");
141 
    if (feeder_file_tx == 0)
142 
    begin
143 
        $display("Failed to open ptpdv2_tx.pcap!");
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        disable feeder_tx;
145 
    end
146 
    else
147 
    begin
148 
        // test pcap file endian
149 
        r_tx = $fread(pcap_4bytes_tx, feeder_file_tx);
150 
        pcap_endian_tx = (pcap_4bytes_tx == 32'ha1b2c3d4)? 1:0;
151 
        s_tx = $fseek(feeder_file_tx, -4, 1);
152 
        // skip pcap file header 24*8
153 
        s_tx = $fseek(feeder_file_tx, 24, 1);
154 
        // read packet content
155 
        eof_tx = 0;
156 
        num_tx = 0;
157 
        while (!eof_tx & !$feof(feeder_file_tx))
158 
        begin : fileread_loop
159 
            // skip frame header (8+4)*8
160 
            start_addr_tx = $ftell(feeder_file_tx);
161 
            s_tx = $fseek(feeder_file_tx, 8+4, 1);
162 
            // get frame length big endian 4*8
163 
            r_tx = $fread(packet_leng_tx, feeder_file_tx);
164 
            packet_leng_tx = pcap_endian_tx?
165 
                               {packet_leng_tx[31:24], packet_leng_tx[23:16], packet_leng_tx[15: 8], packet_leng_tx[ 7: 0]}:
166 
                               {packet_leng_tx[ 7: 0], packet_leng_tx[15: 8], packet_leng_tx[23:16], packet_leng_tx[31:24]};
167 
            // check whether end of file
168 
            if (r_tx == 0)
169 
            begin
170 
                eof_tx = 1;
171 
                @(posedge gmii_txclk_offset);
172 
                gmii_txctrl = 1'b0;
173 
                gmii_txdata = 4'h0;
174 
                @(posedge gmii_txclk_offset);
175 
                gmii_txctrl = 1'b0;
176 
                gmii_txdata = 4'h0;
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                disable fileread_loop;
178 
            end
179 
            // send ifg 96bit=12*8
180 
            repeat (12)
181 
            begin
182 
                @(posedge gmii_txclk_offset)
183 
                gmii_txctrl = 1'b0;
184 
                gmii_txdata = 4'h0;
185 
                @(posedge gmii_txclk_offset)
186 
                gmii_txctrl = 1'b0;
187 
                gmii_txdata = 4'h0;
188 
            end
189 
            // send frame preamble and sfd 55555555555555d5=8*8
190 
            repeat (7)
191 
            begin
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                @(posedge gmii_txclk_offset);
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                gmii_txctrl = 1'b1;
194 
                gmii_txdata = 4'h5;
195 
                @(posedge gmii_txclk_offset);
196 
                gmii_txctrl = 1'b1;
197 
                gmii_txdata = 4'h5;
198 
            end
199 
                @(posedge gmii_txclk_offset)
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                gmii_txctrl = 1'b1;
201 
                gmii_txdata = 4'h5;
202 
                @(posedge gmii_txclk_offset)
203 
                gmii_txctrl = 1'b1;
204 
                gmii_txdata = 4'hd;
205 
            // send frame content
206 
            for (index_tx=0; index_tx<packet_leng_tx; index_tx=index_tx+1)
207 
            begin
208 
                r_tx = $fread(packet_byte_tx, feeder_file_tx);
209 
                @(posedge gmii_txclk_offset);
210 
                gmii_txctrl = 1'b1;
211 
                gmii_txdata = packet_byte_tx[3:0];
212 
                @(posedge gmii_txclk_offset);
213 
                gmii_txctrl = 1'b1;
214 
                gmii_txdata = packet_byte_tx[7:4];
215 
                // check whether end of file
216 
                if (r_tx == 0)
217 
                begin
218 
                    eof_tx = 1;
219 
                    @(posedge gmii_txclk_offset);
220 
                    gmii_txctrl = 1'b0;
221 
                    gmii_txdata = 4'h0;
222 
                    @(posedge gmii_txclk_offset);
223 
                    gmii_txctrl = 1'b0;
224 
                    gmii_txdata = 4'h0;
225 
                    disable fileread_loop;
226 
                end
227 
            end
228 
            end_addr_tx = $ftell(feeder_file_tx);
229 
            num_tx = num_tx + 1;
230 
        end
231 
        $fclose(feeder_file_tx);
232 
        gmii_txctrl = 1'b0;
233 
        gmii_txdata = 4'h0;
234 
    end
235 
end
236 
end
237 
endgenerate
238 24 edn_walter 
 
239 
endmodule

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