Subversion Repositories xge_mac

//////////////////////////////////////////////////////////////////////

////                                                              ////

////  File name "wishbone.v"                                      ////

////                                                              ////

////  This file is part of the "10GE MAC" project                 ////

////  http://www.opencores.org/cores/xge_mac/                     ////

////                                                              ////

////  Author(s):                                                  ////

////      - A. Tanguay (antanguay@opencores.org)                  ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

////                                                              ////

//// Copyright (C) 2008 AUTHORS. All rights reserved.             ////

////                                                              ////

//// 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                     ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

`include "defines.v"

module stats(/*AUTOARG*/

  // Outputs

  stats_tx_pkts, stats_rx_pkts,

  // Inputs

  wb_clk_i, wb_rst_i, status_good_frame_tx_tog,

  status_good_frame_tx_size, status_good_frame_rx_tog,

  status_good_frame_rx_size

  );

input         wb_clk_i;

input         wb_rst_i;

input         status_good_frame_tx_tog;

input  [13:0] status_good_frame_tx_size;

input         status_good_frame_rx_tog;

input  [13:0] status_good_frame_rx_size;

output [31:0] stats_tx_pkts;

output [31:0] stats_rx_pkts;

/*AUTOREG*/

// Beginning of automatic regs (for this module's undeclared outputs)

reg [31:0]              stats_rx_pkts;

reg [31:0]              stats_tx_pkts;

// End of automatics

/*AUTOWIRE*/

reg           status_good_frame_tx_tog_d1;

reg           status_good_frame_rx_tog_d1;

reg [31:0]    next_stats_rx_pkts;

reg [31:0]    next_stats_tx_pkts;

always @(posedge wb_clk_i or posedge wb_rst_i) begin

    if (wb_rst_i == 1'b1) begin

        status_good_frame_tx_tog_d1 <= status_good_frame_tx_tog;

        status_good_frame_rx_tog_d1 <= status_good_frame_rx_tog;

        stats_tx_pkts <= 32'b0;

        stats_rx_pkts <= 32'b0;

    end

    else begin

        status_good_frame_tx_tog_d1 <= status_good_frame_tx_tog;

        status_good_frame_rx_tog_d1 <= status_good_frame_rx_tog;

        stats_tx_pkts <= next_stats_tx_pkts;

        stats_rx_pkts <= next_stats_rx_pkts;

    end

end

always @(/*AS*/stats_rx_pkts or stats_tx_pkts

         or status_good_frame_rx_tog or status_good_frame_rx_tog_d1

         or status_good_frame_tx_tog or status_good_frame_tx_tog_d1) begin

    next_stats_tx_pkts = stats_tx_pkts;

    next_stats_rx_pkts = stats_rx_pkts;

    if (status_good_frame_tx_tog_d1 != status_good_frame_tx_tog) begin

        next_stats_tx_pkts = stats_tx_pkts + 32'b1;

    end

    if (status_good_frame_rx_tog_d1 != status_good_frame_rx_tog) begin

        next_stats_rx_pkts = stats_rx_pkts + 32'b1;

    end

end

endmodule