*/
#define NR_UNIX98_PTY_DEFAULT 4096 /* Default maximum for Unix98 ptys */
#define NR_UNIX98_PTY_MAX (1 << MINORBITS) /* Absolute limit */
-#define NR_LDISCS 19
+#define NR_LDISCS 20
/* line disciplines */
#define N_TTY 0
#define N_SLCAN 17 /* Serial / USB serial CAN Adaptors */
#define N_PPS 18 /* Pulse per Second */
+#define N_V253 19 /* Codec control over voice modem */
+
/*
* This character is the same as _POSIX_VDISABLE: it cannot be used as
* a c_cc[] character, but indicates that a particular special character
struct tty_port_operations {
/* Return 1 if the carrier is raised */
int (*carrier_raised)(struct tty_port *port);
+ /* Control the DTR line */
void (*dtr_rts)(struct tty_port *port, int raise);
+ /* Called when the last close completes or a hangup finishes
+ IFF the port was initialized. Do not use to free resources */
+ void (*shutdown)(struct tty_port *port);
+ void (*drop)(struct tty_port *port);
};
struct tty_port {
int count; /* Usage count */
wait_queue_head_t open_wait; /* Open waiters */
wait_queue_head_t close_wait; /* Close waiters */
+ wait_queue_head_t delta_msr_wait; /* Modem status change */
unsigned long flags; /* TTY flags ASY_*/
struct mutex mutex; /* Locking */
unsigned char *xmit_buf; /* Optional buffer */
- int close_delay; /* Close port delay */
- int closing_wait; /* Delay for output */
+ unsigned int close_delay; /* Close port delay */
+ unsigned int closing_wait; /* Delay for output */
int drain_delay; /* Set to zero if no pure time
based drain is needed else
set to size of fifo */
struct tty_driver *driver;
const struct tty_operations *ops;
int index;
- /* The ldisc objects are protected by tty_ldisc_lock at the moment */
- struct tty_ldisc ldisc;
+
+ /* Protects ldisc changes: Lock tty not pty */
+ struct mutex ldisc_mutex;
+ struct tty_ldisc *ldisc;
+
struct mutex termios_mutex;
spinlock_t ctrl_lock;
/* Termios values are protected by the termios mutex */
#define TTY_CLOSING 7 /* ->close() in progress */
#define TTY_LDISC 9 /* Line discipline attached */
#define TTY_LDISC_CHANGING 10 /* Line discipline changing */
+#define TTY_LDISC_OPEN 11 /* Line discipline is open */
#define TTY_HW_COOK_OUT 14 /* Hardware can do output cooking */
#define TTY_HW_COOK_IN 15 /* Hardware can do input cooking */
#define TTY_PTY_LOCK 16 /* pty private */
extern void disassociate_ctty(int priv);
extern void no_tty(void);
extern void tty_flip_buffer_push(struct tty_struct *tty);
+extern void tty_flush_to_ldisc(struct tty_struct *tty);
extern void tty_buffer_free_all(struct tty_struct *tty);
extern void tty_buffer_flush(struct tty_struct *tty);
extern void tty_buffer_init(struct tty_struct *tty);
extern struct tty_ldisc *tty_ldisc_ref(struct tty_struct *);
extern void tty_ldisc_deref(struct tty_ldisc *);
extern struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *);
+extern void tty_ldisc_hangup(struct tty_struct *tty);
extern const struct file_operations tty_ldiscs_proc_fops;
extern void tty_wakeup(struct tty_struct *tty);
extern void tty_release_dev(struct file *filp);
extern int tty_init_termios(struct tty_struct *tty);
+extern struct tty_struct *tty_pair_get_tty(struct tty_struct *tty);
+extern struct tty_struct *tty_pair_get_pty(struct tty_struct *tty);
+
extern struct mutex tty_mutex;
extern void tty_write_unlock(struct tty_struct *tty);
extern int tty_port_close_start(struct tty_port *port,
struct tty_struct *tty, struct file *filp);
extern void tty_port_close_end(struct tty_port *port, struct tty_struct *tty);
+extern void tty_port_close(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp);
+extern inline int tty_port_users(struct tty_port *port)
+{
+ return port->count + port->blocked_open;
+}
extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc);
extern int tty_unregister_ldisc(int disc);
extern int pcxe_open(struct tty_struct *tty, struct file *filp);
-/* printk.c */
-
-extern void console_print(const char *);
-
/* vt.c */
extern int vt_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
+extern long vt_compat_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg);
+
#endif /* __KERNEL__ */
#endif