Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / verif / env / niu / txc_sat / vera / niu_txcbmgr.vr

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// 
// OpenSPARC T2 Processor File: niu_txcbmgr.vr
// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
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#include <vera_defines.vrh>
#include "niu_cbclass.vrh"


class CcbTxIdMgr {

   integer max_cbs;
   integer startSemId;
   integer good_packetactive_cbs;
   integer GoodsemIdTab[];

   task new( (integer i =0 )) {
      integer j;
      max_cbs = i;

      good_packetactive_cbs = 0;
      for( j=0;j<max_cbs; j ++) {
        GoodsemIdTab[j] = 0;
      }

      startSemId = 0;
   }
   function integer isAvailable() ;
   task releaseId(integer Id);
   function integer getTransId();

}
function integer CcbTxIdMgr::isAvailable() {

  if( ( good_packetactive_cbs ) == max_cbs)
     isAvailable = 0;
  else isAvailable = ( max_cbs - good_packetactive_cbs);
  printf(" CcbTxIdMgr::isAvailable - %d \n",isAvailable);
}

function integer CcbTxIdMgr::getTransId() {

integer i;
integer id;
integer done;
 i = 0;
 done = 0;
 id = 0;
 while( (i<max_cbs) & (done==0)) {
  // printf(" in getgoodpktSemId i = %d , GoodsemIdTab - %d \n",i,GoodsemIdTab[i ]);
  if(GoodsemIdTab[i ] ==0) { // ie free
    getTransId =  startSemId + i;
    id = startSemId + i;
    good_packetactive_cbs++;
    GoodsemIdTab[i ] = 1; // Used
    done = 1;
  }
  i++;
 } 
 // error
 if((i== max_cbs) & (done==0)) {
   printf(" No more SemIds available i= %d  !! ERROR \n",i);
   getTransId = -1;
 }

}

task CcbTxIdMgr::releaseId(integer Id){

  integer i;
  i = Id - startSemId ;
  printf("CcbTxIdMgr::  Releasing SemId - %d \n",Id);
  GoodsemIdTab[i] = 0;
  good_packetactive_cbs--;

}