Subversion Repositories xge_mac

/**

 * Scoreboard / Checker for 10 GE MAC Core verification environment.

 * It takes packet data from driver as well as monitor class and comapre them for equality for error checking purpose

 * @file: scoreboard.sv

 * @author: Pratik Mahajan

 * @par Contact: pratik@e-pigeonpost.com

 * @par Company: UCSC 1896 course

 *

 * @version: $LastChangedRevision$

 * @par Last Changed Date

 * $LastChangedDate$

 * $par Last Changed By

 * $LastChangedBy$

 */

/**

 * Scoreboard class for error checking of 10GE MAC Core.

 * Collects packet data from driver and monitor in the form of mailboxes and then compare them for equality.

 * If they are equal then communication was successful

 * @class scoreboard

 * @par mailbox driver2Scoreboard collects transmitted packets from driver.

 * @par mailbox monitor2Scoreboard collects received packets through monitor.

 */

class scoreboard;

   mailbox driver2Scoreboard;  ///< packet data passed down from driver as source or expected data

   mailbox monitor2Scoreboard; ///< packet data from monitor as source for actual data

   static bit      error = 0; ///< Error flag to keep track of correctness of verification environment

   /**

    * Constructor for scoreboard class.

    * purpose is to create an object for scoreboard which will take mailboxes from respective classes

    * @param mailbox receivedFromDriver to hold mailbox received from Driver

    * @param mailbox receivedFromMonitor to hold mailbox received from Monitor

    * @return: NA (creates object of type scoreboard and returns handle)

    */

   function new (input mailbox receivedFromDriver, input mailbox receivedFromMonitor);

      this.driver2Scoreboard  = receivedFromDriver;

      this.monitor2Scoreboard = receivedFromMonitor;

   endfunction: new

   /**

    * Compare task for error checking.

    * This task compares actual and expected results for correctness of design.

    * @param mailbox driver2Scoreboard expected results to be validated

    * @param mailbox monitor2Scoreboard actual results to be compared

    */

   task compare ( input mailbox driver2Scoreboard,

                  input mailbox monitor2Scoreboard,

                  int bytesInFrame);

      packet    driverPacket;

      packet    monitorPacket;

      driver2Scoreboard.get  (driverPacket);

      monitor2Scoreboard.get (monitorPacket);

`define driverData { driverPacket.packetData [7], driverPacket.packetData [6], driverPacket.packetData [5], driverPacket.packetData [4], driverPacket.packetData [3], driverPacket.packetData [2], driverPacket.packetData [1], driverPacket.packetData [0] }

`define monitorData { monitorPacket.receivedData [7], monitorPacket.receivedData [6], monitorPacket.receivedData [5], monitorPacket.receivedData [4], monitorPacket.receivedData [3], monitorPacket.receivedData [2], monitorPacket.receivedData [1], monitorPacket.receivedData [0] }

      if (bytesInFrame != 0) begin

         for (int i = 0; i < bytesInFrame; i++) begin

            if (driverPacket.packetData [7-i] != monitorPacket.receivedData [7-i]) begin

               $display ("ERROR: Packet data [%0d] the data was %x and %x mismatched", i, driverPacket.packetData[7-i], monitorPacket.receivedData[7-i]);

               error = 1;

            end

         end

      end

      if (bytesInFrame == 0)

        if (`driverData != `monitorData) begin

           $display ("ERROR: Packet frame mismatched");

           error = 1;

        end

      if (driverPacket.startOfPacket != monitorPacket.startOfPacket || driverPacket.endOfPacket != monitorPacket.endOfPacket)

        begin

           error = 1;

           $display ("ERROR: Packet control mismatched ");

        end

/*      if (error == 0) begin

         $display ("PASS: Packet matched properly ");

      end

*/

   endtask // compare

endclass // scoreboard