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// 
// OpenSPARC T2 Processor File: niu_checker.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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#include <vera_defines.vrh>
#include "plusArgMacros.vri"
#include "std_display_class.vrh"
#include "niu_sig.if.vrh"

#define STD_DISP dbg

class niu_checker {
    reg niu_no_active_chk_disable; 
    StandardDisplay dbg;
    
    task niu_no_active_chk ();
    task new (StandardDisplay dbg) {
	this.dbg = dbg;
	if( mChkPlusarg(niu_no_active_chk_disable)) niu_no_active_chk_disable = 1;
  	else           niu_no_active_chk_disable = 0;      

	if (!niu_no_active_chk_disable){
	  fork
	     niu_no_active_chk();
	  join none
        }

    }	
}

task niu_checker::niu_no_active_chk()
{
string name;
   name = "niu_checker::niu_no_active_chk";
   while (!niu_no_active_chk_disable){
	@(posedge niu_sig_intf.clk);
	if (niu_sig_intf.ncu_niu_vld){
	  // niu_active_en = 1;
	   PR_INFO(name, MON_ALWAYS, psprintf ("CPU send PIO R/W to NIU, the checker is disabled\n"));
	   niu_no_active_chk_disable = 1;
	   break;
	}
	if (niu_sig_intf.niu_ncu_vld){
	  PR_ERROR(name, MON_ERR, psprintf ("NIU send PIO ACK or INT to PCU before CPU send PIO R/W to NIU! the checker is under :verif/env/fc/vera/niu_chk\n"));
	}
	if (niu_sig_intf.niu_sii_hdr_vld){
	  PR_ERROR(name, MON_ERR, psprintf ("NIU send DAM  to SII before CPU send PIO R/W to NIU! the checker is under :verif/env/fc/vera/niu_chk \n"));
	}
   }
}