pcie_phy_packet.vri

FEATURES &#8226 16 bit PIPE Spec PCI Express Testbench &#8226 Link training &#8226 Initial Flo

// ===========================================================================
// File    : pcie_phy_packet.vri
// Author  : cmagleby
// Date    : Mon Dec 3 11:03:46 MST 2007
// Project : TI PHY design
//
// Copyright (c) notice
// This code adheres to the GNU public license
//
// ===========================================================================
//
// $Id: pcie_phy_packet.vri,v 1.1.1.1 2007-12-05 18:37:07 cmagleby Exp $
//
// ===========================================================================
//
// $Log: not supported by cvs2svn $
//
// ===========================================================================
// Function : This file is a class of pcie packet can be used for all Phy
// packet types.
//
// ===========================================================================
// ===========================================================================
#include <vera_defines.vrh>

class pcie_phy_packet {
  bit [7:0] com;
  bit [7:0] link;
  bit [7:0] lane;
  bit [7:0] n_fts;
  bit [7:0] rateid;
  bit [7:0] train_cntrl;
  bit [7:0] ts_id;
  bit [7:0] idle;
  bit [7:0] skp;
  bit [7:0] fts;
  integer   length;     
  bit [17:0] temp_packet[];
  

  //methods
  task new(
    bit [7:0] ic_link = 8'hf7,
    bit [7:0] ic_lane = 8'hf7,
    bit [7:0] ic_nfts = 8'hff,
    bit [7:0] ic_rateid = 8'h2,
    bit [7:0] ic_train_cntrl = 8'h0,
    bit [7:0] ic_ts_id = 8'h4a) {
    
    link        = ic_link;
    lane        = ic_lane;
    n_fts       = ic_nfts;
    rateid      = ic_rateid;
    train_cntrl = ic_train_cntrl;
    ts_id       = ic_ts_id;
    com         = 8'hbc;
    idle        = 8'h7c;
    skp         = 8'h1c;
    fts         = 8'h3c;
  }
  
  task build_packet (string pkt_type = "ts") {
    if (pkt_type == "ts") {
      length = 8;
      if (link == 8'hf7) temp_packet[0]  = {2'b11,link,com};
      else temp_packet[0]  = {2'b01,link,com};
      if (lane == 8'hf7) temp_packet[1]  = {2'b1,n_fts,lane};
      else temp_packet[1]  = {2'b0,n_fts,lane};
      temp_packet[2]  = {2'b0,train_cntrl,rateid};
      temp_packet[3]  = {2'b0,ts_id,ts_id};
      temp_packet[4]  = {2'b0,ts_id,ts_id};
      temp_packet[5]  = {2'b0,ts_id,ts_id};
      temp_packet[6]  = {2'b0,ts_id,ts_id};
      temp_packet[7] = {2'b0,ts_id,ts_id};
      printf ("building training set packet (%0h)\n",
              {temp_packet[7][15:0],temp_packet[6][15:0],
               temp_packet[5][15:0],temp_packet[4][15:0],
               temp_packet[3][15:0],temp_packet[2][15:0],
               temp_packet[1][15:0],temp_packet[0][15:0]});
    }
    else if (pkt_type == "eidle") {
      length = 2;
      temp_packet[0] = {2'b11,idle,com};
      temp_packet[1] = {2'b11,idle,idle};
      printf ("building eidle packet (%0h)\n",{temp_packet[1][15:0],temp_packet[0][15:0]});
    }
    else if (pkt_type == "skip"){
      length = 2;
      temp_packet[0] = {2'b11,skp,com};
      temp_packet[1] = {2'b11,skp,skp};
      printf ("building skip packet (%0h)\n",{temp_packet[1][15:0],temp_packet[0][15:0]});
    }
    else if (pkt_type == "fast_ts"){
      length = 2;
      temp_packet[0] = {2'b11,fts,com};
      temp_packet[1] = {2'b11,fts,fts};
      printf ("building fts packet (%0h)\n",{temp_packet[1][15:0],temp_packet[0][15:0]});
    }
    
  }
}