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[/] [pcie_vera_tb/] [trunk/] [link_training.vri] - Blame information for rev 8

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1 2 cmagleby 
// ===========================================================================
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// File    : link_training.vri
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// Author  : cmagleby
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// Date    : Mon Dec 3 11:03:46 MST 2007
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// Project : TI PHY design
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//
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// Copyright (c) notice
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// This code adheres to the GNU public license
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//
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// ===========================================================================
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//
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// $Id: link_training.vri,v 1.1.1.1 2007-12-05 18:37:06 cmagleby Exp $
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//
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// ===========================================================================
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//
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// $Log: not supported by cvs2svn $
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//
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// ===========================================================================
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// Function :This file performs the link training and link and lane negotiation
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//
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// ===========================================================================
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// ===========================================================================
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#include
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#define COM_s 8'hbc
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#define SKP_s 8'h1c
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#define IDLE_s 8'h7c
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#define FTS_s 8'h3c
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#define STP_s 8'hfb
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#define SDP_s 8'h5c
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#define EDB   8'hfe
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#define END_s 8'hfd
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task link_training () {
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  fork
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    send_ts();
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    receive_ts();
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  join none
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}
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task send_ts( ) {
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  integer index;
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  string pkt_type;
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  pkt_type = "ts";
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  //ti_phy_top.t1_count == 9'hff;
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  ti_phy_top.rxvalid16 = 1'b1;
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  wait_var(phy_rdy);
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  printf ("send_ts1 =  %d \n",send_ts1);
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  while (LINK_UP == 0) {
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    if (send_ts1 == 1) {
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      ts2_cycle_cnt = 1;
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      //printf ("number of ts dut sent %d \n",ti_phy_top.t1_count);
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      printf ("ts #%0d ts 1's ",ts1_cycle_cnt++);
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      pkt_type = "ts";
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      training_set = new(link,lane,*,*,*,*);
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      training_set.build_packet(pkt_type);
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      if (!semaphore_get(WAIT,my_semaphore,1))
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        error ("Semaphore_get returned 0\n");
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      for (index = 0; index < training_set.length; index ++) {
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        @ (posedge CLOCK);
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        //ti_phy_top.rxdatak16 = training_set.temp_packet[index][17:16];
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        //ti_phy_top.rxdata16  = training_set.temp_packet[index][15:0];
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        //adding mailbox
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        mailbox_put (rx_data_mailbox, {training_set.temp_packet[index][17:16],training_set.temp_packet[index][15:0]});
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      }
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      semaphore_put (my_semaphore, 1);
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    }
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    else if (send_ts2 == 1){
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      ts1_cycle_cnt = 1;
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      printf ("ts #%0d ts 2's ",ts2_cycle_cnt++);
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      pkt_type = "ts";
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      training_set = new(lane,link,*,*,*,'h45);
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      training_set.build_packet(pkt_type);
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      for (index = 0; index < training_set.length; index ++) {
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        @ (posedge CLOCK);
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        //ti_phy_top.rxdatak16 = training_set.temp_packet[index][17:16];
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        //ti_phy_top.rxdata16  = training_set.temp_packet[index][15:0];
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        //adding mailbox
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        mailbox_put (rx_data_mailbox, {training_set.temp_packet[index][17:16],training_set.temp_packet[index][15:0]});
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      }
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    }
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  }
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  printf ("LINK UP(%0d) !!!!!!!!!!!\n",LINK_UP);
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  //ti_phy_top.rxdatak16 = 2'b00;
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  //ti_phy_top.rxdata16  = 1'b0;
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}
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task receive_ts () {
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  integer ret;
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  integer ts1_count=0;
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  integer ts2_count=0;
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  integer ts1_link_count = 0;
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  integer ts1_lane_count = 0;
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  integer ts2_lane_link_count = 0;
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  integer send_ts1_with_link, send_ts1_with_link_lane, send_ts2_with_link_lane;
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  bit [127:0] receive_phy_packet;
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  send_ts1  = 1;
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  send_ts2  = 0;
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  send_ts1_with_link = 0;
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  send_ts1_with_link_lane = 0;
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  send_ts2_with_link_lane = 0;
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  while (1) {
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    ret = mailbox_get (WAIT,phy_mailbox,receive_phy_packet,CHECK);
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    //printf ("Recieved PHY PACKET (%0h) added to phy mailbox\n",receive_phy_packet);
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    if (receive_phy_packet == 127'h454545454545454545450002f0f7f7bc) {
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      printf ("Recieved TS 2 PHY PACKET\n");
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      ts2_count++;
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    }
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    if (receive_phy_packet == 127'h4a4a4a4a4a4a4a4a4a4a0002f0f7f7bc){
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      printf ("Recieved TS 1 PHY PACKET\n");
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      ts1_count++;
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    }
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    if (receive_phy_packet == 127'h4a4a4a4a4a4a4a4a4a4a0002f0f701bc) {
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      printf ("Recieved TS 1 link accept PHY PACKET\n");
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      ts1_link_count++;
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    }
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    if (receive_phy_packet == 127'h4a4a4a4a4a4a4a4a4a4a0002f00101bc) {
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      printf ("Recieved TS 1 lane and link accept PHY PACKET\n");
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      ts1_lane_count++;
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    }
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    if (receive_phy_packet == 127'h454545454545454545450002f00101bc) {
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      printf ("Recieved TS 1 lane and link accept PHY PACKET\n");
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      ts2_lane_link_count++;
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    }
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    //printf ("send_ts2_with_link_lane(%0d)send_ts1_with_link_lane(%0d)send_ts1_with_link(%0d)send_ts2(%0d)send_ts1(%0d)\n",
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    //        send_ts2_with_link_lane,send_ts1_with_link_lane,send_ts1_with_link,send_ts2,send_ts1 );
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    //printf ("ts2_lane_link_count(%0d)ts1_lane_count(%0d)ts1_link_count(%0d)ts1_count(%0d)ts2_count(%0d)\n",
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    //        ts2_lane_link_count,ts1_lane_count,ts1_link_count,ts1_count,ts2_count);
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    if (send_ts2_with_link_lane && ts2_cycle_cnt > 16 && ts2_lane_link_count > 15) {
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      //clear all signals if we get a ts1 with pad
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      if (ts1_count > 0) {
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        send_ts1 = 1;
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        send_ts2 = 0;
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        send_ts2_with_link_lane = 0;
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        send_ts1_with_link_lane = 0;
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        send_ts1_with_link = 0;
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        LINK_UP = 0;
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        ts2_lane_link_count = 0;
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        ts1_lane_count = 0;
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        ts1_link_count = 0;
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        ts1_count = 0;
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        ts2_count = 0;
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      }
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      else {
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        send_ts1 = 0;
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        send_ts2 = 0;
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        LINK_UP  = 1;
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        ts1_lane_count = 0;
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        ts1_link_count = 0;
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        ts1_count = 0;
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        ts2_count = 0;
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      }
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    }
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    else if (send_ts1_with_link_lane){
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      if (ts1_cycle_cnt > 16 && ts1_lane_count >16 ) {
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        send_ts1 = 0;
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        send_ts2 = 1;
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        link = 8'b1;
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        lane = 8'b1;
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        send_ts2_with_link_lane = 1;
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        ts1_lane_count = 0;
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        ts1_link_count = 0;
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        ts1_count = 0;
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        ts2_count = 0;
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      }
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    }
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    else if (send_ts1_with_link) {
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      if (ts1_cycle_cnt > 16 && ts1_link_count > 16) {
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        send_ts1 = 1;
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        send_ts2 = 0;
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        link = 8'b1;
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        lane = 8'b1;
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        send_ts1_with_link_lane = 1;
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      }
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    }
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    //send at least 16 ts 2
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    else if (send_ts2) {
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      if (ts2_count > 16 && ts2_cycle_cnt > 16) {
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        send_ts1 = 1;
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        send_ts2 = 0;
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        send_ts1_with_link = 1;
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        link = 8'b1;
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        lane = 8'hf7;
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      }
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    }
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    //send at least 100 ts 1's
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    else if (ts2_count > 16 && ts1_cycle_cnt > 100) {
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      send_ts1 = 0;
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      send_ts2 = 1;
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      link = 'hf7;
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      lane = 'hf7;
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    }
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    else {
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      send_ts1 = 1;
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      send_ts2 = 0;
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      link = 'hf7;
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      lane = 'hf7;
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    }
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  }
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}
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