diff --git a/include/linux/istallion.h b/include/linux/istallion.h
new file mode 100644
index 0000000..5f4ee64
--- /dev/null
+++ b/include/linux/istallion.h
@@ -0,0 +1,132 @@
+/*****************************************************************************/
+
+/*
+ *	istallion.h  -- stallion intelligent multiport serial driver.
+ *
+ *	Copyright (C) 1996-1998  Stallion Technologies
+ *	Copyright (C) 1994-1996  Greg Ungerer.
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program; if not, write to the Free Software
+ *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/version.h>
+
+/*****************************************************************************/
+#ifndef	_ISTALLION_H
+#define	_ISTALLION_H
+/*****************************************************************************/
+
+/*
+ *	Define important driver constants here.
+ */
+#define	STL_MAXBRDS		4
+#define	STL_MAXPANELS		4
+#define	STL_MAXPORTS		64
+#define	STL_MAXCHANS		(STL_MAXPORTS + 1)
+#define	STL_MAXDEVS		(STL_MAXBRDS * STL_MAXPORTS)
+
+
+/*
+ *	Define a set of structures to hold all the board/panel/port info
+ *	for our ports. These will be dynamically allocated as required at
+ *	driver initialization time.
+ */
+
+/*
+ *	Port and board structures to hold status info about each object.
+ *	The board structure contains pointers to structures for each port
+ *	connected to it. Panels are not distinguished here, since
+ *	communication with the slave board will always be on a per port
+ *	basis.
+ */
+typedef struct {
+	unsigned long		magic;
+	int			portnr;
+	int			panelnr;
+	int			brdnr;
+	unsigned long		state;
+	int			devnr;
+	int			flags;
+	int			baud_base;
+	int			custom_divisor;
+	int			close_delay;
+	int			closing_wait;
+	int			refcount;
+	int			openwaitcnt;
+	int			rc;
+	int			argsize;
+	void			*argp;
+	unsigned int		rxmarkmsk;
+	struct tty_struct	*tty;
+	wait_queue_head_t	open_wait;
+	wait_queue_head_t	close_wait;
+	wait_queue_head_t	raw_wait;
+	struct work_struct	tqhangup;
+	asysigs_t		asig;
+	unsigned long		addr;
+	unsigned long		rxoffset;
+	unsigned long		txoffset;
+	unsigned long		sigs;
+	unsigned long		pflag;
+	unsigned int		rxsize;
+	unsigned int		txsize;
+	unsigned char		reqbit;
+	unsigned char		portidx;
+	unsigned char		portbit;
+} stliport_t;
+
+/*
+ *	Use a structure of function pointers to do board level operations.
+ *	These include, enable/disable, paging shared memory, interrupting, etc.
+ */
+typedef struct stlibrd {
+	unsigned long	magic;
+	int		brdnr;
+	int		brdtype;
+	int		state;
+	int		nrpanels;
+	int		nrports;
+	int		nrdevs;
+	unsigned int	iobase;
+	int		iosize;
+	unsigned long	memaddr;
+	void		*membase;
+	int		memsize;
+	int		pagesize;
+	int		hostoffset;
+	int		slaveoffset;
+	int		bitsize;
+	int		enabval;
+	int		panels[STL_MAXPANELS];
+	int		panelids[STL_MAXPANELS];
+	void		(*init)(struct stlibrd *brdp);
+	void		(*enable)(struct stlibrd *brdp);
+	void		(*reenable)(struct stlibrd *brdp);
+	void		(*disable)(struct stlibrd *brdp);
+	char		*(*getmemptr)(struct stlibrd *brdp, unsigned long offset, int line);
+	void		(*intr)(struct stlibrd *brdp);
+	void		(*reset)(struct stlibrd *brdp);
+	stliport_t	*ports[STL_MAXPORTS];
+} stlibrd_t;
+
+
+/*
+ *	Define MAGIC numbers used for above structures.
+ */
+#define	STLI_PORTMAGIC	0xe671c7a1
+#define	STLI_BOARDMAGIC	0x4bc6c825
+
+/*****************************************************************************/
+#endif