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antanguay |
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/**
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* packet class file for 10 GE MAC Core.
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* The file holds packet class according to specs
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* @file: packet.sv
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* @author: Pratik Mahajan
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* @par Contact: pratik@e-pigeonpost.com
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* @par Company: NA (UCSC systemverilog for adv. verification course)
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*
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* @version:
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* $LastChangedRevision$
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* @par Last Changed Date:
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* $LastChangedDate$
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* @par Last Changed By:
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* $LastChangedBy$
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*
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*/
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/**
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* Packet class to represent packet for ethernet MAC core as per specs.
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* Class declaration and related methods
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* @class: packet
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*/
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class packet;
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rand bit [7:0] packetData [8]; ///< random data variable used to send data in DUT
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bit [7:0] receivedData [8]; ///< placeholder variable for received data from DUT -- can't be same as packetData since transmission and reception can be full-duplex
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bit [2:0] packetLengthModulus; ///< modulus to report number of octates in last word of communication
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bit startOfPacket;
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bit endOfPacket;
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bit packetValid;
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bit transmitFIFOFull;
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bit receiveReadEnable;
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bit receiveError;
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bit receiveAvailable;
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static bit [15:0] transmitPktId;
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static bit [15:0] receivePktId;
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typeOfPkt pktClassPktType;
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//`define printData { packetData[7], packetData[6], packetData[5], packetData[4], packetData[3], packetData[2], packetData[1], packetData[0] }
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//`define printReceipt { receivedData [7], receivedData[6], receivedData[5], receivedData[4], receivedData[3], receivedData[2], receivedData[1], receivedData[0] }
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/**
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* Constructor for packet class.
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* It simply increments count of packet id depending on type of packet
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* @param typeOfPkt: input type to count number of packets sent / received.
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* @return : NA (creates objects and returns handle)
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*/
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function new (input int pktClassPktType = NONE);
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if (pktClassPktType == TRANSMIT)
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transmitPktId++;
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if (pktClassPktType == RECEIVE)
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receivePktId++;
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endfunction // new
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/**
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* Print function for packet class.
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* prints relevant information for each frame transfered
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* @param: NA
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* @return: NA
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*/
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function void print (input int pktClassPktType = NONE);
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if (pktClassPktType == TRANSMIT)
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$display (" [Time %0t ps] SOP = %b, Transmitted Data = %x, EOP = %b, Modulus = %h ", $time, startOfPacket, `transmitData, endOfPacket, packetLengthModulus);
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if (pktClassPktType == RECEIVE)
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$display (" [Time %0t ps] SOP = %b, Received Data = %x, EOP = %b, Modulus = %h ", $time, startOfPacket, `receivedData, endOfPacket, packetLengthModulus);
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endfunction: print
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endclass // packet
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