/*  $Id: rwio.c,v 1.6 2004/03/25 00:06:14 jmuelmen Exp $ */

/* This file contains the OS-independent r/w IO routines */

#include <pthread.h>

#include "surf_int.h"
#include "surf_drv.h"

/* this is also the place where the surflib mutex is kept */
#define SURF_LOCK 	pthread_mutex_lock(&_surf_mut)
#define SURF_UNLOCK 	pthread_mutex_unlock(&_surf_mut)

static pthread_mutex_t _surf_mut;

int surf_init ()
{
     surflib_init();
     surf_mod_init();
     surf_board_init();
     pthread_mutex_init(&_surf_mut, NULL);
     return 0;
}

int surf_write_board (const char *b_name, int ep, char *buf, int count)
{
     int ret;
     struct surf_t *board;

     SURF_LOCK;
     /* first try to find the board */
     if (!(board = surf_search(b_name))) 
	  /* if it's not there, try rescanning the bus  */
	  if (surf_find_boards()) {
	       /* something bad happened on the bus.  errno is already set. */
	       SURF_UNLOCK;
	       return -1;
	  }
     if (!(board = surf_search(b_name))) {
	  /* if it's still not there, give up */
	  surf_errno = ENOBOARD;
	  SURF_UNLOCK;
	  return -1;
     }
     
     ret = surf_write_ep(board, ep, buf, count);
     SURF_UNLOCK;
     if (ret < 0)
	  SURF_LOG(LOGSURF_ERROR, "Error writing\n");
     return ret;
}

int surf_read_board (const char *b_name, int ep, char *buf, int count)
{
     int ret;
     struct surf_t *board;

     SURF_LOCK;
     /* first try to find the board */
     if (!(board = surf_search(b_name))) 
	  /* if it's not there, try rescanning the bus  */
	  if (surf_find_boards()) {
	       /* something bad happened on the bus.  errno is already set. */
	       SURF_UNLOCK;
	       return -1;
	  }
     if (!(board = surf_search(b_name))) {
	  /* if it's still not there, give up */
	  surf_errno = ENOBOARD;
	  SURF_UNLOCK;
	  return -1;
     }

     ret = surf_read_ep(board, ep, buf, count);
     SURF_UNLOCK;
     if (ret < 0)
	  SURF_LOG(LOGSURF_ERROR, "Error reading\n");
     return ret;
}

int surf_print_boards ()
{
     int ret;
     
     SURF_LOCK;
     ret = surft_print_boards();
     SURF_UNLOCK;
     return ret;
}