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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// it under the terms of the GNU General Public License as published by
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// GNU General Public License for more details.
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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 */