// N.Kurz, EE, GSI, 9-Mar-2009
// N.Kurz, EE, GSI, 1-Mar-2013: adoped for linux

//#define DEBUG
#define GET_BAR0_BASE 0x1234

#define PEXDEV            "/dev/pexor"
#define PCI_BAR0_NAME     "PCI_BAR0"
#define PCI_BAR0_SIZE     0x800000  // in bytes

#include <stdio.h>
#include <errno.h>
#include <smem.h>
#include <sys/mman.h>
#include <sys/file.h>
#include <stdlib.h>

#include "pexor_gosip.h"

int main(argc,argv)
int argc;
char *argv[];
{
  int i,j;
  int l_i, l_j;
  int l_stat;

  int l_bar0_base;
  volatile long *pl_virt_bar0;

  int            prot;
  int            flags;

  long l_bar0_byte_off;
  long l_bar0_long_off;
  long l_bar1_byte_off;
  long l_bar1_long_off;

  s_pexor sPEXOR_1;

  long l_wr_dat; 
  long l_rw;
  long l_rd_dat;
  long l_comm, l_addr, l_data;
  long l_sfp;
  int loop;
  int  fd_pex;  // file descriptor for PEXOR device
  long a,b,c;
  long aa;
  long modid;
#ifndef GSI__LINUX  
  smem_remove(PCI_BAR0_NAME);
#endif  
	// open PEXOR device:

  if (argc!=4){
    printf ("\nusage: read ");
    printf ("sfp  start_address  loop \n");
    exit (0);
  }  else  {
    sscanf (argv[1], "%x", &l_sfp);
    sscanf (argv[2], "%x", &l_addr);
    sscanf (argv[3], "%x", &loop);
  }



  if ((fd_pex = open (PEXDEV, O_RDWR)) == -1)
  {
    printf ("ERROR>> could not open %s device \n", PEXDEV);
    exit (0);
  }
  else
  {
#ifdef DEBUG
    printf ("opened device: %s, fd = %d \n", PEXDEV, fd_pex);
#endif
  }

#ifdef GSI__LINUX
  // map bar0 directly via pexor driver and access trixor base
  prot  = PROT_WRITE | PROT_READ;
  flags = MAP_SHARED | MAP_LOCKED;
  if ((pl_virt_bar0 = (long *) mmap (NULL, PCI_BAR0_SIZE, prot, flags, fd_pex, 0)) == MAP_FAILED)
  {
    printf ("failed to mmap bar0 from pexor, return: 0x%x, %d \n", pl_virt_bar0, pl_virt_bar0);
    perror ("mmap"); 
	  exit (-1);
  } 
  #ifdef DEBUG
  printf ("first mapped virtual address of bar0: 0x%p \n", pl_virt_bar0);
  #endif // DEBUG

#else // GSI__LINUX
  // get bar0 base:
  l_stat = ioctl (fd_pex, GET_BAR0_BASE, &l_bar0_base);
  if (l_stat == -1 )
  {
    printf ("ERROR>> ioctl GET_BAR0_BASE failed \n");
  }
  else
  {
    printf ("PEXOR bar0 base: 0x%x \n", l_bar0_base);
  } 
  // open shared segment
  smem_remove(PCI_BAR0_NAME);
  if((pl_virt_bar0 = (long *) smem_create (PCI_BAR0_NAME,
            (char*) l_bar0_base, PCI_BAR0_SIZE, SM_READ | SM_WRITE))==NULL)
  {
    printf ("smem_create for PEXOR BAR0 failed");
    exit (-1);
  }
#endif // GSI__LINUX

  PEXOR_GetPointer(0x0, (long*) pl_virt_bar0, &sPEXOR_1); 

  printf (" SFP%d: ",l_sfp);
  for(i=0;i<loop;i++){
    PEXOR_Read( &sPEXOR_1, &l_addr, &l_data);
    printf("0x%x 0x%x \n", &l_addr, l_data);
    l_addr=l_addr+0x4;
  }

 return 0;
}