sys/dev/xen/console/xencons_ring.h

   1 /*
   2  * $FreeBSD$
   3  *
   4  */
   5 #ifndef _XENCONS_RING_H
   6 #define _XENCONS_RING_H
   7
   8 #define CN_LOCK(l)                                                                      \
   9                 do {                                                                                    \
  10                                 if (panicstr == NULL)                                   \
  11                         mtx_lock_spin(&(l));                    \
  12                 } while (0)
  13 #define CN_UNLOCK(l)                                                            \
  14                 do {                                                                                    \
  15                                 if (panicstr == NULL)                                   \
  16                         mtx_unlock_spin(&(l));                  \
  17                 } while (0)
  18
  19 int xencons_ring_init(void);
  20 int xencons_ring_send(const char *data, unsigned len);
  21 void xencons_rx(char *buf, unsigned len);
  22 void xencons_tx(void);
  23
  24
  25 typedef void (xencons_receiver_func)(char *buf, unsigned len);
  26 void xencons_ring_register_receiver(xencons_receiver_func *f);
  27
  28 void xencons_handle_input(void *unused);
  29 int xencons_has_input(void);
  30
  31 #endif /* _XENCONS_RING_H */