Initial source

1 files changed, 203 insertions, 0 deletions

diff --git a/device/tty.h b/device/tty.h
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+++ b/device/tty.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1993-1990 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	Author: David B. Golub, Carnegie Mellon University
+ *	Date: 	7/90
+ *
+ * 	Compatibility TTY structure for existing TTY device drivers.
+ */
+
+#ifndef	_DEVICE_TTY_H_
+#define	_DEVICE_TTY_H_
+
+#include <kern/lock.h>
+#include <kern/queue.h>
+#include <mach/port.h>
+
+#include <device/device_types.h>
+#include <device/tty_status.h>
+#include <device/cirbuf.h>
+#include <device/io_req.h>
+
+#ifdef	luna88k
+#include <luna88k/jtermio.h>
+#endif
+
+struct tty {
+	decl_simple_lock_data(,t_lock)
+	struct cirbuf	t_inq;		/* input buffer */
+	struct cirbuf	t_outq;		/* output buffer */
+	char *		t_addr;		/* device pointer */
+	int		t_dev;		/* device number */
+	int		(*t_start)(struct tty *);
+					/* routine to start output */
+#define	t_oproc	t_start
+	int		(*t_stop)(struct tty *, int);
+					/* routine to stop output */
+	int		(*t_mctl)(struct tty *, int, int);
+					/* (optional) routine to control
+					   modem signals */
+	char		t_ispeed;	/* input speed */
+	char		t_ospeed;	/* output speed */
+	char		t_breakc;	/* character to deliver when 'break'
+					   condition received */
+	int		t_flags;	/* mode flags */
+	int		t_state;	/* current state */
+	int		t_line;		/* fake line discipline number,
+					   for old drivers - always 0 */
+	queue_head_t	t_delayed_read;	/* pending read requests */
+	queue_head_t	t_delayed_write;/* pending write requests */
+	queue_head_t	t_delayed_open;	/* pending open requests */
+
+/*
+ * Items beyond this point should be removed to device-specific
+ * extension structures.
+ */
+	int		(*t_getstat)();	/* routine to get status */
+	int		(*t_setstat)();	/* routine to set status */
+	dev_ops_t	t_tops;		/* another device to possibly
+					   push through */
+};
+typedef struct tty	*tty_t;
+
+/*
+ * Common TTY service routines
+ */
+extern io_return_t char_open(
+	int		dev,
+	struct tty *	tp,
+	dev_mode_t	mode,
+	io_req_t	ior);
+
+extern io_return_t char_read(
+	struct tty *	tp,
+	io_req_t	ior);
+
+extern io_return_t char_write(
+	struct tty *	tp,
+	io_req_t	ior);
+
+extern void ttyinput(
+	unsigned int	c,
+	struct tty *	tp);
+
+extern boolean_t ttymodem(
+	struct tty *	tp,
+	boolean_t	carrier_up);
+
+extern void tty_queue_completion(
+	queue_t		queue);
+#define	tt_open_wakeup(tp) \
+	(tty_queue_completion(&(tp)->t_delayed_open))
+#define	tt_write_wakeup(tp) \
+	(tty_queue_completion(&(tp)->t_delayed_write))
+
+extern void ttychars(
+	struct tty *	tp);
+
+#define	TTMINBUF	90
+
+short	tthiwat[NSPEEDS], ttlowat[NSPEEDS];
+#define	TTHIWAT(tp)	tthiwat[(tp)->t_ospeed]
+#define	TTLOWAT(tp)	ttlowat[(tp)->t_ospeed]
+
+/* internal state bits */
+#define	TS_INIT		0x00000001	/* tty structure initialized */
+#define	TS_TIMEOUT	0x00000002	/* delay timeout in progress */
+#define	TS_WOPEN	0x00000004	/* waiting for open to complete */
+#define	TS_ISOPEN	0x00000008	/* device is open */
+#define	TS_FLUSH	0x00000010	/* outq has been flushed during DMA */
+#define	TS_CARR_ON	0x00000020	/* software copy of carrier-present */
+#define	TS_BUSY		0x00000040	/* output in progress */
+#define	TS_ASLEEP	0x00000080	/* wakeup when output done */
+
+#define	TS_TTSTOP	0x00000100	/* output stopped by ctl-s */
+#define	TS_HUPCLS	0x00000200	/* hang up upon last close */
+#define	TS_TBLOCK	0x00000400	/* tandem queue blocked */
+
+#define	TS_NBIO		0x00001000	/* tty in non-blocking mode */
+#define	TS_ONDELAY	0x00002000	/* device is open; software copy of 
+ 					 * carrier is not present */
+#define	TS_MIN		0x00004000	/* buffer input chars, if possible */
+#define	TS_MIN_TO	0x00008000	/* timeout for the above is active */
+
+#define TS_OUT          0x00010000	/* tty in use for dialout only */
+#define	TS_RTS_DOWN	0x00020000	/* modem pls stop */
+
+#define TS_TRANSLATE	0x00100000	/* translation device enabled */
+#define TS_KDB		0x00200000	/* should enter kdb on ALT */
+
+#define	TS_MIN_TO_RCV	0x00400000	/* character recived during 
+					   receive timeout interval */
+
+/* flags - old names defined in terms of new ones */
+
+#define	TANDEM		TF_TANDEM
+#define	ODDP		TF_ODDP
+#define	EVENP		TF_EVENP
+#define	ANYP		(ODDP|EVENP)
+#define	MDMBUF		TF_MDMBUF
+#define	LITOUT		TF_LITOUT
+#define	NOHANG		TF_NOHANG
+
+#define	ECHO		TF_ECHO
+#define	CRMOD		TF_CRMOD
+#define	XTABS		TF_XTABS
+
+/* these are here only to let old code compile - they are never set */
+#define	RAW		LITOUT
+#define	PASS8		LITOUT
+
+/*
+ * Hardware bits.
+ * SHOULD NOT BE HERE.
+ */
+#define	DONE	0200
+#define	IENABLE	0100
+
+/*
+ * Modem control commands.
+ */
+#define	DMSET		0
+#define	DMBIS		1
+#define	DMBIC		2
+#define	DMGET		3
+
+/*
+ * Fake 'line discipline' switch, for the benefit of old code
+ * that wants to call through it.
+ */
+struct ldisc_switch {
+	int	(*l_read) (struct tty *, io_req_t);	/* read */
+	int	(*l_write)(struct tty *, io_req_t);	/* write */
+	void	(*l_rint) (unsigned int, struct tty *);	/* character input */
+	boolean_t (*l_modem)(struct tty *, boolean_t);	/* modem change */
+	void	(*l_start)(struct tty *);		/* start output */
+};
+
+extern struct ldisc_switch	linesw[];
+
+#endif	/* _DEVICE_TTY_H_ */