#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <fcntl.h>

#include "altera_dma_cmd.h"
#include "altera_dma_regs.h"
#define BUFFER_LENGTH 40

unsigned int* pDmaUser;

int main (int argc ,char** argv) {
  int i;
  int rc= 0;
  int on_chip_size = ( DMASIZE * 4 )*ALTERA_DMA_DESCRIPTOR_NUM ; 
  ssize_t f;
  
  f = open ("/dev/pcie40_0_altdma", O_RDWR);
  if (f == -1) {
    printf ("Couldn't open the device.\n");
    return 0;
  } else {
    printf ("Opened the device: file handle #%lu!\n", (long unsigned int)f);
  }
  pDmaUser= (unsigned int *) mmap( NULL , 
				   on_chip_size , 
				   PROT_READ|PROT_WRITE , 
				   MAP_SHARED , 
				   f , 
				   0x000);
  rc = ioctl(f, ALTERA_IOCX_START);
    
  if (( pDmaUser!= NULL)&(rc >0) ) {
    for (i= 0 ;i < DMASIZE;i++) printf("0X%08x\n",pDmaUser[i]);
  } else {
    printf (" No data available  :\n");
    if (rc == -1) printf( "DMA too longs\n ");
    if (rc == -2) printf( "FIFO is empty \n ");
  }  
  close (f);
  return 0 ;
}