verif/env/niu/test_utils/vera/niu_txintr_utils.vr

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//
// OpenSPARC T2 Processor File: niu_txintr_utils.vr
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#include <vera_defines.vrh>

#include "niu_tx_descp.vrh"

#include "niu_int_dev.vrh"
#include "niu_int_mgr.vrh"
#include "cMesg.vrh"

extern Mesg     be_msg;

// adding txdma intr dev class

class CNiuIntrDevTxDMAm extends DMAChannel {

   event intr_rcvd;
   bit [63:0] rd_data;
   bit [63:0] wr_data;
   integer count = 0;
   integer exp_err;

   task new(integer i, integer dev_id) {
        super.new(i,"TX",dev_id);
        trigger(OFF,intr_rcvd);
        exp_err = 0;
   }

  function integer isr( ( bit[1:0] ldf_flags = 0) ) {
        printf("Start In ISR id - %d LDF Flags - %x \n",super.dev_id,ldf_flags);
        isr_done = 0;
        SetPendingFlag();


        trigger(ON,intr_rcvd);

        if(ldf_flags[1] == 1'b1) {
           // error interrupt detected
           // read the tx_cs reg
           Read_TxCs(rd_data);
           be_msg.print(e_mesg_info,"TX_ISR","Tx_Cs_Rd","Value of TxCs %h for DMA %d\n",rd_data,this.id);
           if(rd_data[7:0] == 8'h0) {
             // err interrupt received but status bits not set
             be_msg.print(e_mesg_error,"TX_ISR","err_flag_chk","Err intr rcvd, but err_stat zero for DMA %d\n",this.id);
           } else {
            if(!exp_err) {
             if(rd_data[0])
                be_msg.print(e_mesg_error,"TX_ISR","err_chk","Err intr rcvd, Pkt_Prt_Err status set for DMA %d\n",this.id);
             else if(rd_data[1])
                be_msg.print(e_mesg_error,"TX_ISR","err_chk","Err intr rcvd, Conf_Prt_Err status set for DMA %d\n",this.id);
             else if(rd_data[2])
                be_msg.print(e_mesg_error,"TX_ISR","err_chk","Err intr rcvd, Nack_PktRd_Err status set for DMA %d\n",this.id);
             else if(rd_data[3])
                be_msg.print(e_mesg_error,"TX_ISR","err_chk","Err intr rcvd, Nack_PrefRd_Err status set for DMA %d\n",this.id);
             else if(rd_data[4])
                be_msg.print(e_mesg_error,"TX_ISR","err_chk","Err intr rcvd, Pref_BufPar_Err status set for DMA %d\n",this.id);
             else if(rd_data[5])
                be_msg.print(e_mesg_error,"TX_ISR","err_chk","Err intr rcvd, Ring_Oflow_Err status set for DMA %d\n",this.id);
             else if(rd_data[6])
                be_msg.print(e_mesg_error,"TX_ISR","err_chk","Err intr rcvd, Pkt_Size_Err status set for DMA %d\n",this.id);
             else if(rd_data[7])
                be_msg.print(e_mesg_error,"TX_ISR","err_chk","Err intr rcvd, Mbox_Err status set for DMA %d\n",this.id);
           } else {
             if(rd_data[0])
                be_msg.print(e_mesg_info,"TX_ISR","err_chk","Err intr rcvd, Pkt_Prt_Err status set for DMA %d\n",this.id);
             else if(rd_data[1])
                be_msg.print(e_mesg_info,"TX_ISR","err_chk","Err intr rcvd, Conf_Prt_Err status set for DMA %d\n",this.id);
             else if(rd_data[2])
                be_msg.print(e_mesg_info,"TX_ISR","err_chk","Err intr rcvd, Nack_PktRd_Err status set for DMA %d\n",this.id);
             else if(rd_data[3])
                be_msg.print(e_mesg_info,"TX_ISR","err_chk","Err intr rcvd, Nack_PrefRd_Err status set for DMA %d\n",this.id);
             else if(rd_data[4])
                be_msg.print(e_mesg_info,"TX_ISR","err_chk","Err intr rcvd, Pref_BufPar_Err status set for DMA %d\n",this.id);
             else if(rd_data[5])
                be_msg.print(e_mesg_info,"TX_ISR","err_chk","Err intr rcvd, Ring_Oflow_Err status set for DMA %d\n",this.id);
             else if(rd_data[6])
                be_msg.print(e_mesg_info,"TX_ISR","err_chk","Err intr rcvd, Pkt_Size_Err status set for DMA %d\n",this.id);
             else if(rd_data[7])
                be_msg.print(e_mesg_info,"TX_ISR","err_chk","Err intr rcvd, Mbox_Err status set for DMA %d\n",this.id);
           }
             reset_dma();

             // trigger the event
             isr_done = 1;

             }
        } else {
        // read the tx_cs reg
        Read_TxCs(rd_data);
        be_msg.print(e_mesg_info,"TX_ISR","Tx_Cs_Rd","Value of TxCs %h for DMA %d\n",rd_data,this.id);
        // printf("Value of TxCs from ISR %h\n",rd_data);
        // re-enable mailbox update after this
        wr_data = rd_data | 64'h2000_0000;
        count++;
        SetTxCs(wr_data);
        // trigger the event
        isr_done = 1;
       }
       ClrPendingFlag();
   }
}