Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / verif / env / ilu_peu / vera / N2str / ilupeuInErrPEUStr.vr

// ========== Copyright Header Begin ==========================================
// 
// OpenSPARC T2 Processor File: ilupeuInErrPEUStr.vr
// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
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// the Free Software Foundation; version 2 of the License.
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
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// along with this program; if not, write to the Free Software
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// ========== Copyright Header End ============================================
class InErrPEUStr extends PEUStrBase 
  {
  integer f_errQueue;				// A mailbox for bad pkt headers
  integer f_offs;				// The offset for the pty error

  task new( PEUTestEnv a_env )
    {
    super.new( a_env );
    f_errQueue = 0;
    f_offs = 0;
    }

  task SetErrQueue( integer a_queue )
    {
    f_errQueue = a_queue;
    } /* end SetErrQueue */

  task SetOffset( integer a_offs )
    {
    f_offs = a_offs;
    } /* end SetErrOffs */

  task Execute()
    {
    bit [7:0]   tlpTag;
    bit [127:0] tlpHdr;
    integer     tlpData;

					// Generate a DMA request, big enough
					// for the given offset.
    if ( f_offs == 0 ) f_offs = 17 + urandom()%32;
    f_env.allocDmaTag( tlpTag );
    if ( f_offs > 15 )
      f_env.genEgressWrReq( tlpTag, tlpHdr, tlpData, f_offs/4 - 2 );
    else
      f_env.genEgressWrReq( tlpTag, tlpHdr, tlpData );

					// Present the bad TLP to the TLU.
					// Since the TLU presents the TLP to the
					// ILU (with bad parity), we have to get
					// some posted credits.
    f_env.reserveIngressCredits( tlpHdr );
    f_env.drivePCIE( tlpHdr, tlpData, 0, f_offs );
    f_env.consumeIngressCredits( tlpHdr );

					// An error in the header means we're
					// going into the 'drain state'.
					// Otherwise, expect the TLP (with bad
					// parity) from the ILU.
    if ( f_offs <= 16 )
      {
      f_env.enterDrainState();
//    f_env.waitIngressLatency( tlpHdr );
//N2 review      while( !IHB.err ) @(posedge IHB.clk);
      f_env.wait(100);
      }
    else
      {
      f_env.errorPayload( tlpData );
      f_env.expectILU( tlpHdr, tlpData );
      f_env.freeDmaTag( tlpTag );
      }

					// Tell the error-checker about this
					// bad-boy.
    if ( f_errQueue != 0 )
      {
					// A parity error within the first 16
					// bytes will yield an IHB error!
      if ( f_offs <= 16 )
        {
        mailbox_put( f_errQueue, e_ERR_none );
        mailbox_put( f_errQueue, 2 );
        mailbox_put( f_errQueue, e_ERR_ilu_ihb );
        mailbox_put( f_errQueue, 128'bx );
        }
      mailbox_put( f_errQueue, e_ERR_oe_iip );
      mailbox_put( f_errQueue, 128'bx );
      }

    } /* end Execute */
  } /* end InErrPEUStr */