/** * @file rtems/termiostypes.h *//* *  RTEMS termios device support internal data structures * *  COPYRIGHT (c) 1989-2000. *  On-Line Applications Research Corporation (OAR). * *  The license and distribution terms for this file may be *  found in the file LICENSE in this distribution or at *  http://www.rtems.com/license/LICENSE. * *  $Id: termiostypes.h,v 1.9 2005/02/02 00:06:18 joel Exp $ */#ifndef	TERMIOSTYPES_H#define	TERMIOSTYPES_H#include <rtems.h>#include <rtems/libio.h>#ifdef __cplusplusextern "C" {#endif/* * Wakeup callback data structure */struct ttywakeup {  void      (*sw_pfn)(struct termios *tty, void *arg);  void      *sw_arg;};/* * Variables associated with the character buffer */struct rtems_termios_rawbuf {  char *theBuf;  volatile unsigned int	Head;  volatile unsigned int	Tail;  volatile unsigned int	Size;  rtems_id		Semaphore;};/* * Variables associated with each termios instance. * One structure for each hardware I/O device. */struct rtems_termios_tty {	/*	 * Linked-list of active TERMIOS devices	 */	struct rtems_termios_tty	*forw;	struct rtems_termios_tty	*back;	/*	 * How many times has this device been opened	 */	int		refcount;	/*	 * This device	 */	rtems_device_major_number	major;	rtems_device_major_number	minor;	/*	 * Mutual-exclusion semaphores	 */	rtems_id	isem;	rtems_id	osem;	/*	 * The canonical (cooked) character buffer	 */	char		*cbuf;	int		ccount;	int		cindex;	/*	 * Keep track of cursor (printhead) position	 */	int		column;	int		read_start_column;	/*	 * The ioctl settings	 */	struct termios	termios;	rtems_interval	vtimeTicks;	/*	 * Raw input character buffer	 */        struct rtems_termios_rawbuf rawInBuf;	uint32_t  	rawInBufSemaphoreOptions;	rtems_interval		rawInBufSemaphoreTimeout;	rtems_interval		rawInBufSemaphoreFirstTimeout;	unsigned int		rawInBufDropped;	/* Statistics */	/*	 * Raw output character buffer	 */        struct rtems_termios_rawbuf rawOutBuf;        int  t_dqlen; /* count of characters dequeued from device */	enum {rob_idle, rob_busy, rob_wait }	rawOutBufState;	/*	 * Callbacks to device-specific routines	 */	rtems_termios_callbacks	device;        volatile unsigned int   flow_ctrl;        unsigned int            lowwater,highwater;	/*	 * I/O task IDs (for task-driven drivers)	 */        rtems_id                rxTaskId;        rtems_id                txTaskId;        /*	 * line discipline related stuff	 */        int t_line;   /* id of line discipline                       */        void *t_sc;   /* hook for discipline-specific data structure */        /*	 * Wakeup callback variables	 */	struct ttywakeup tty_snd;	struct ttywakeup tty_rcv;	int              tty_rcvwakeup;};struct linesw {  int (*l_open) (struct rtems_termios_tty *tp);  int (*l_close)(struct rtems_termios_tty *tp);  int (*l_read )(struct rtems_termios_tty *tp,rtems_libio_rw_args_t *args);  int (*l_write)(struct rtems_termios_tty *tp,rtems_libio_rw_args_t *args);  int (*l_rint )(int c,struct rtems_termios_tty *tp);  int (*l_start)(struct rtems_termios_tty *tp);  int (*l_ioctl)(struct rtems_termios_tty *tp,rtems_libio_ioctl_args_t *args);  int (*l_modem)(struct rtems_termios_tty *tp,int flags);};/* * FIXME: this should move to libio.h! * values for rtems_termios_callbacks.outputUsesInterrupts */#define TERMIOS_POLLED      0#define TERMIOS_IRQ_DRIVEN  1#define TERMIOS_TASK_DRIVEN 2/* * FIXME: this should move to termios.h! */void rtems_termios_rxirq_occured(struct rtems_termios_tty *tty);/* * FIXME: this should move to termios.h! * put a string to output ring buffer */void rtems_termios_puts (const void *buf,			 int len,			 struct rtems_termios_tty *tty);/* * global hooks for line disciplines */extern struct linesw linesw[];extern int nlinesw;#define	TTYDISC		0		/* termios tty line discipline */#define	TABLDISC	3		/* tablet discipline */#define	SLIPDISC	4		/* serial IP discipline */#define	PPPDISC		5		/* PPP discipline */#define MAXLDISC        8#ifdef __cplusplus}#endif#endif	/* TERMIOSTYPES_H */