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// 
// OpenSPARC T2 Processor File: niu_intr_test_util.vr
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#include "niu_int_mgr.vrh"
#include "niu_int_dev.vrh"
extern   CNiuIntrMgr NiuIntrMgr;



class sid_table {

      bit [68:0] dev_bound;
      bit [6:0] sid_num;
      integer ldgno_bound;

      task new() {
          dev_bound = 69'h0;
          sid_num = 7'h0;
      }
}


class intr_test_util {

   integer intr_grpnum;
   integer cmdl_grpnum;

   sid_table sid_tab[64];
   // CNiuIntrMgr NiuIntrMgr;

   task new();

   task setup_sid_tab(CNiuIntrDev dev,integer ldgno,integer type);
   task programme_intmgr(CNiuIntrDev dev,integer ldgno, integer type, integer func_num);
   task compute_sid(integer func_num, var bit [6:0] sid); 
   
  
}

task intr_test_util :: new() {

     integer i = 0;

     for(i = 0;i <64; i++) {
      sid_tab[i] = new();
     }

    if (get_plus_arg (CHECK,"INTR_GRPNUM="))
	intr_grpnum = get_plus_arg(NUM,"INTR_GRPNUM=");
   else
      intr_grpnum = 0;

   if (get_plus_arg (CHECK,"CMDL_GRPNUM="))
	cmdl_grpnum = get_plus_arg(NUM,"CMDL_GRPNUM=");
   else
      cmdl_grpnum = 0;

     NiuIntrMgr.initLdg(64'hffffffffffffffff); // Enable all LDG in Environment
     printf("Init LDG\n");
     NiuIntrMgr.SetTmrRes(100);
     printf("Set Time resolution\n");
}

task intr_test_util :: setup_sid_tab(CNiuIntrDev dev,integer ldgno,integer type)
{
  integer group_num;
  integer func_num;
  static integer tmp_grp_num = 0; 

    if(intr_grpnum == 0) 
      group_num = random()%64;
    else if(intr_grpnum == 1)
      group_num = cmdl_grpnum;
    else if(intr_grpnum == 2) {
      group_num = tmp_grp_num;
      tmp_grp_num++;
    } else if(intr_grpnum == 3) {
      group_num = tmp_grp_num%64;
      tmp_grp_num = tmp_grp_num + 16;
    }
      
       
      printf("Group number is %d for dev %d\n",group_num,dev.dev_id);
      
      if(group_num < 16)
          func_num = 0;
      else if(group_num < 32)
          func_num = 1;
      else if(group_num < 48)
          func_num = 2;
      else func_num = 3;

      programme_intmgr(dev,group_num,1,func_num);

      sid_tab[group_num].ldgno_bound = 1;
      sid_tab[group_num].dev_bound[dev.dev_id] = 1;

          
}

task intr_test_util :: programme_intmgr(CNiuIntrDev dev,integer ldgno, integer type, integer func_num) {
 
  bit[6:0] sid;
  
       if(sid_tab[ldgno].ldgno_bound)  {

          // just do the bind
        
        dev.setGid(ldgno);
        NiuIntrMgr.ldg[ldgno].SetIntrMgm(1/*Arm*/,10/*Timer*/);
        NiuIntrMgr.ldg[ldgno].ldgbind(dev); 

       } else {
         compute_sid(func_num,sid);
        
         printf("Sid_table updated\n"); 
         NiuIntrMgr.updateSidTab(ldgno,sid); 

         dev.setGid(ldgno);
         NiuIntrMgr.ldg[ldgno].SetIntrMgm(1/*Arm*/,10/*Timer*/);
         NiuIntrMgr.ldg[ldgno].ldgbind(dev); 
         NiuIntrMgr.ldg[ldgno].rearm = 1;
       }
}

task intr_test_util :: compute_sid(integer func_num, var bit [6:0] sid) {

       bit [4:0] part_sid;
       static bit [31:0] mask = 32'h0;
       integer tmp_part_sid;
       bit [6:0] tmp_sid;
       bit [1:0] tmp_fn_num;
       integer done = 0;

 
       tmp_fn_num = func_num;

       while(!done) {
       part_sid = random()%32;
       tmp_part_sid = part_sid;
     
       if(mask[tmp_part_sid] == 0) {
             // tmp_sid = {tmp_fn_num,tmp_part_sid};
             sid = {tmp_fn_num,part_sid};
             mask[tmp_part_sid] = 1;
             done = 1;
       }

     }

        
}