[dragonfly.git] / sys / dev / misc / syscons / sysmouse.c

/*-
 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer as
 *    the first lines of this file unmodified.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/dev/syscons/sysmouse.c,v 1.2.2.2 2001/07/16 05:21:24 yokota Exp $
 * $DragonFly: src/sys/dev/misc/syscons/sysmouse.c,v 1.12 2006/09/10 01:26:35 dillon Exp $
 */

#include "opt_syscons.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/priv.h>
#include <sys/tty.h>
#include <sys/kernel.h>
#include <sys/thread2.h>

#include <machine/console.h>
#include <machine/mouse.h>

#include "syscons.h"

#ifndef SC_NO_SYSMOUSE

#define	CDEV_MAJOR	12		/* major number, shared with syscons */
#define SC_MOUSE 	128		/* minor number */

static d_open_t		smopen;
static d_close_t	smclose;
static d_ioctl_t	smioctl;

static struct dev_ops sm_ops = {
	{ "sysmouse", CDEV_MAJOR, D_TTY },
	.d_open =	smopen,
	.d_close =	smclose,
	.d_read =	ttyread,
	.d_ioctl =	smioctl,
	.d_poll =	ttypoll,
	.d_revoke =	ttyrevoke
};

/* local variables */
static struct tty	*sysmouse_tty;
static int		mouse_level;	/* sysmouse protocol level */
static mousestatus_t	mouse_status;

static void		smstart(struct tty *tp);
static int		smparam(struct tty *tp, struct termios *t);

static int
smopen(struct dev_open_args *ap)
{
	cdev_t dev = ap->a_head.a_dev;
	struct tty *tp;

	DPRINTF(5, ("smopen: dev:%d,%d, vty:%d\n",
		major(dev), minor(dev), SC_VTY(dev)));

#if 0
	if (SC_VTY(dev) != SC_MOUSE)
		return ENXIO;
#endif

	tp = dev->si_tty = ttymalloc(dev->si_tty);
	if (!(tp->t_state & TS_ISOPEN)) {
		sysmouse_tty = tp;
		tp->t_oproc = smstart;
		tp->t_param = smparam;
		tp->t_stop = nottystop;
		tp->t_dev = dev;
		ttychars(tp);
		tp->t_iflag = 0;
		tp->t_oflag = 0;
		tp->t_lflag = 0;
		tp->t_cflag = TTYDEF_CFLAG;
		tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
		smparam(tp, &tp->t_termios);
		(*linesw[tp->t_line].l_modem)(tp, 1);
	} else if (tp->t_state & TS_XCLUDE && priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) {
		return EBUSY;
	}

	return (*linesw[tp->t_line].l_open)(dev, tp);
}

static int
smclose(struct dev_close_args *ap)
{
	cdev_t dev = ap->a_head.a_dev;
	struct tty *tp;

	tp = dev->si_tty;
	crit_enter();
	mouse_level = 0;
	(*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
	ttyclose(tp);
	crit_exit();

	return 0;
}

static void
smstart(struct tty *tp)
{
	struct clist *rbp;
	u_char buf[PCBURST];

	crit_enter();
	if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
		tp->t_state |= TS_BUSY;
		rbp = &tp->t_outq;
		while (rbp->c_cc)
			q_to_b(rbp, buf, PCBURST);
		tp->t_state &= ~TS_BUSY;
		ttwwakeup(tp);
	}
	crit_exit();
}

static int
smparam(struct tty *tp, struct termios *t)
{
	tp->t_ispeed = t->c_ispeed;
	tp->t_ospeed = t->c_ospeed;
	tp->t_cflag = t->c_cflag;
	return 0;
}

static int
smioctl(struct dev_ioctl_args *ap)
{
	cdev_t dev = ap->a_head.a_dev;
	struct tty *tp;
	mousehw_t *hw;
	mousemode_t *mode;
	int error;

	tp = dev->si_tty;

	switch (ap->a_cmd) {
	case MOUSE_GETHWINFO:	/* get device information */
		hw = (mousehw_t *)ap->a_data;
		hw->buttons = 10;		/* XXX unknown */
		hw->iftype = MOUSE_IF_SYSMOUSE;
		hw->type = MOUSE_MOUSE;
		hw->model = MOUSE_MODEL_GENERIC;
		hw->hwid = 0;
		return 0;

	case MOUSE_GETMODE:	/* get protocol/mode */
		mode = (mousemode_t *)ap->a_data;
		mode->level = mouse_level;
		switch (mode->level) {
		case 0: /* emulate MouseSystems protocol */
			mode->protocol = MOUSE_PROTO_MSC;
			mode->rate = -1;		/* unknown */
			mode->resolution = -1;	/* unknown */
			mode->accelfactor = 0;	/* disabled */
			mode->packetsize = MOUSE_MSC_PACKETSIZE;
			mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
			mode->syncmask[1] = MOUSE_MSC_SYNC;
			break;

		case 1: /* sysmouse protocol */
			mode->protocol = MOUSE_PROTO_SYSMOUSE;
			mode->rate = -1;
			mode->resolution = -1;
			mode->accelfactor = 0;
			mode->packetsize = MOUSE_SYS_PACKETSIZE;
			mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
			mode->syncmask[1] = MOUSE_SYS_SYNC;
			break;
		}
		return 0;

	case MOUSE_SETMODE:	/* set protocol/mode */
		mode = (mousemode_t *)ap->a_data;
		if (mode->level == -1)
			; 	/* don't change the current setting */
		else if ((mode->level < 0) || (mode->level > 1))
			return EINVAL;
		else
			mouse_level = mode->level;
		return 0;

	case MOUSE_GETLEVEL:	/* get operation level */
		*(int *)ap->a_data = mouse_level;
		return 0;

	case MOUSE_SETLEVEL:	/* set operation level */
		if ((*(int *)ap->a_data  < 0) || (*(int *)ap->a_data > 1))
			return EINVAL;
		mouse_level = *(int *)ap->a_data;
		return 0;

	case MOUSE_GETSTATUS:	/* get accumulated mouse events */
		crit_enter();
		*(mousestatus_t *)ap->a_data = mouse_status;
		mouse_status.flags = 0;
		mouse_status.obutton = mouse_status.button;
		mouse_status.dx = 0;
		mouse_status.dy = 0;
		mouse_status.dz = 0;
		crit_exit();
		return 0;

#if notyet
	case MOUSE_GETVARS:	/* get internal mouse variables */
	case MOUSE_SETVARS:	/* set internal mouse variables */
		return ENODEV;
#endif

	case MOUSE_READSTATE:	/* read status from the device */
	case MOUSE_READDATA:	/* read data from the device */
		return ENODEV;
	}

	error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
	if (error != ENOIOCTL)
		return error;
	error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag);
	if (error != ENOIOCTL)
		return error;
	return ENOTTY;
}

static void
sm_attach_mouse(void *unused)
{
	cdev_t dev;

	dev = make_dev(&sm_ops, SC_MOUSE, UID_ROOT, GID_WHEEL,
		       0600, "sysmouse");
	/* sysmouse doesn't have scr_stat */
}

SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR,
	sm_attach_mouse, NULL)

int
sysmouse_event(mouse_info_t *info)
{
	/* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
	static int butmap[8] = {
	    MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
	    MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
	    MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
	    MOUSE_MSC_BUTTON3UP,
	    MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
	    MOUSE_MSC_BUTTON2UP,
	    MOUSE_MSC_BUTTON1UP,
	    0,
	};
	u_char buf[8];
	int x, y, z;
	int i;

	switch (info->operation) {
	case MOUSE_ACTION:
        	mouse_status.button = info->u.data.buttons;
		/* FALL THROUGH */
	case MOUSE_MOTION_EVENT:
		x = info->u.data.x;
		y = info->u.data.y;
		z = info->u.data.z;
		break;
	case MOUSE_BUTTON_EVENT:
		x = y = z = 0;
		if (info->u.event.value > 0)
			mouse_status.button |= info->u.event.id;
		else
			mouse_status.button &= ~info->u.event.id;
		break;
	default:
		return 0;
	}

	mouse_status.dx += x;
	mouse_status.dy += y;
	mouse_status.dz += z;
	mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0)
			      | (mouse_status.obutton ^ mouse_status.button);
	if (mouse_status.flags == 0)
		return 0;

	if ((sysmouse_tty == NULL) || !(sysmouse_tty->t_state & TS_ISOPEN))
		return mouse_status.flags;

	/* the first five bytes are compatible with MouseSystems' */
	buf[0] = MOUSE_MSC_SYNC
		 | butmap[mouse_status.button & MOUSE_STDBUTTONS];
	x = imax(imin(x, 255), -256);
	buf[1] = x >> 1;
	buf[3] = x - buf[1];
	y = -imax(imin(y, 255), -256);
	buf[2] = y >> 1;
	buf[4] = y - buf[2];
	for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i)
		(*linesw[sysmouse_tty->t_line].l_rint)(buf[i], sysmouse_tty);
	if (mouse_level >= 1) {
		/* extended part */
        	z = imax(imin(z, 127), -128);
        	buf[5] = (z >> 1) & 0x7f;
        	buf[6] = (z - (z >> 1)) & 0x7f;
        	/* buttons 4-10 */
        	buf[7] = (~mouse_status.button >> 3) & 0x7f;
        	for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i)
			(*linesw[sysmouse_tty->t_line].l_rint)(buf[i],
							       sysmouse_tty);
	}

	return mouse_status.flags;
}

#endif /* !SC_NO_SYSMOUSE */
Commit	Line	Data
984263bc MD	1	/*-
	2	* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer as
	10	* the first lines of this file unmodified.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	*
	15	* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
	16	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	17	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	18	* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	19	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	20	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	21	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	22	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	23	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	24	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	25	*
	26	* $FreeBSD: src/sys/dev/syscons/sysmouse.c,v 1.2.2.2 2001/07/16 05:21:24 yokota Exp $
b13267a5	27	* $DragonFly: src/sys/dev/misc/syscons/sysmouse.c,v 1.12 2006/09/10 01:26:35 dillon Exp $
984263bc MD	28	*/
	29
	30	#include "opt_syscons.h"
	31
	32	#include <sys/param.h>
	33	#include <sys/systm.h>
	34	#include <sys/conf.h>
	35	#include <sys/proc.h>
895c1f85	36	#include <sys/priv.h>
984263bc MD	37	#include <sys/tty.h>
984263bc MD	38	#include <sys/kernel.h>
6bc31f17	39	#include <sys/thread2.h>
984263bc MD	40
	41	#include <machine/console.h>
	42	#include <machine/mouse.h>
	43
1f2de5d4	44	#include "syscons.h"
984263bc MD	45
	46	#ifndef SC_NO_SYSMOUSE
	47
	48	#define CDEV_MAJOR 12 /* major number, shared with syscons */
	49	#define SC_MOUSE 128 /* minor number */
	50
	51	static d_open_t smopen;
	52	static d_close_t smclose;
	53	static d_ioctl_t smioctl;
	54
fef8985e MD	55	static struct dev_ops sm_ops = {
	56	{ "sysmouse", CDEV_MAJOR, D_TTY },
	57	.d_open = smopen,
	58	.d_close = smclose,
	59	.d_read = ttyread,
	60	.d_ioctl = smioctl,
	61	.d_poll = ttypoll,
a32446b7	62	.d_revoke = ttyrevoke
984263bc MD	63	};
	64
	65	/* local variables */
	66	static struct tty *sysmouse_tty;
	67	static int mouse_level; /* sysmouse protocol level */
	68	static mousestatus_t mouse_status;
	69
	70	static void smstart(struct tty *tp);
	71	static int smparam(struct tty tp, struct termios t);
	72
	73	static int
fef8985e	74	smopen(struct dev_open_args *ap)
984263bc	75	{
b13267a5	76	cdev_t dev = ap->a_head.a_dev;
984263bc MD	77	struct tty *tp;
	78
	79	DPRINTF(5, ("smopen: dev:%d,%d, vty:%d\n",
	80	major(dev), minor(dev), SC_VTY(dev)));
	81
	82	#if 0
	83	if (SC_VTY(dev) != SC_MOUSE)
	84	return ENXIO;
	85	#endif
	86
	87	tp = dev->si_tty = ttymalloc(dev->si_tty);
	88	if (!(tp->t_state & TS_ISOPEN)) {
	89	sysmouse_tty = tp;
	90	tp->t_oproc = smstart;
	91	tp->t_param = smparam;
	92	tp->t_stop = nottystop;
	93	tp->t_dev = dev;
	94	ttychars(tp);
eda99557 SS	95	tp->t_iflag = 0;
	96	tp->t_oflag = 0;
	97	tp->t_lflag = 0;
984263bc	98	tp->t_cflag = TTYDEF_CFLAG;
984263bc MD	99	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
	100	smparam(tp, &tp->t_termios);
	101	(*linesw[tp->t_line].l_modem)(tp, 1);
895c1f85	102	} else if (tp->t_state & TS_XCLUDE && priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) {
984263bc MD	103	return EBUSY;
	104	}
	105
	106	return (*linesw[tp->t_line].l_open)(dev, tp);
	107	}
	108
	109	static int
fef8985e	110	smclose(struct dev_close_args *ap)
984263bc	111	{
b13267a5	112	cdev_t dev = ap->a_head.a_dev;
984263bc	113	struct tty *tp;
984263bc MD	114
984263bc MD	115	tp = dev->si_tty;
6bc31f17	116	crit_enter();
984263bc	117	mouse_level = 0;
fef8985e	118	(*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
984263bc	119	ttyclose(tp);
6bc31f17	120	crit_exit();
984263bc MD	121
	122	return 0;
	123	}
	124
	125	static void
	126	smstart(struct tty *tp)
	127	{
	128	struct clist *rbp;
	129	u_char buf[PCBURST];
984263bc	130
6bc31f17	131	crit_enter();
984263bc MD	132	if (!(tp->t_state & (TS_TIMEOUT \| TS_BUSY \| TS_TTSTOP))) {
	133	tp->t_state \|= TS_BUSY;
	134	rbp = &tp->t_outq;
	135	while (rbp->c_cc)
	136	q_to_b(rbp, buf, PCBURST);
	137	tp->t_state &= ~TS_BUSY;
	138	ttwwakeup(tp);
	139	}
6bc31f17	140	crit_exit();
984263bc MD	141	}
	142
	143	static int
	144	smparam(struct tty tp, struct termios t)
	145	{
	146	tp->t_ispeed = t->c_ispeed;
	147	tp->t_ospeed = t->c_ospeed;
	148	tp->t_cflag = t->c_cflag;
	149	return 0;
	150	}
	151
	152	static int
fef8985e	153	smioctl(struct dev_ioctl_args *ap)
984263bc	154	{
b13267a5	155	cdev_t dev = ap->a_head.a_dev;
984263bc MD	156	struct tty *tp;
	157	mousehw_t *hw;
	158	mousemode_t *mode;
	159	int error;
984263bc MD	160
984263bc MD	161	tp = dev->si_tty;
984263bc	162
fef8985e	163	switch (ap->a_cmd) {
984263bc	164	case MOUSE_GETHWINFO: /* get device information */
fef8985e	165	hw = (mousehw_t *)ap->a_data;
984263bc MD	166	hw->buttons = 10; /* XXX unknown */
	167	hw->iftype = MOUSE_IF_SYSMOUSE;
	168	hw->type = MOUSE_MOUSE;
	169	hw->model = MOUSE_MODEL_GENERIC;
	170	hw->hwid = 0;
	171	return 0;
	172
	173	case MOUSE_GETMODE: /* get protocol/mode */
fef8985e	174	mode = (mousemode_t *)ap->a_data;
984263bc MD	175	mode->level = mouse_level;
	176	switch (mode->level) {
	177	case 0: /* emulate MouseSystems protocol */
	178	mode->protocol = MOUSE_PROTO_MSC;
	179	mode->rate = -1; /* unknown */
	180	mode->resolution = -1; /* unknown */
	181	mode->accelfactor = 0; /* disabled */
	182	mode->packetsize = MOUSE_MSC_PACKETSIZE;
	183	mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
	184	mode->syncmask[1] = MOUSE_MSC_SYNC;
	185	break;
	186
	187	case 1: /* sysmouse protocol */
	188	mode->protocol = MOUSE_PROTO_SYSMOUSE;
	189	mode->rate = -1;
	190	mode->resolution = -1;
	191	mode->accelfactor = 0;
	192	mode->packetsize = MOUSE_SYS_PACKETSIZE;
	193	mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
	194	mode->syncmask[1] = MOUSE_SYS_SYNC;
	195	break;
	196	}
	197	return 0;
	198
	199	case MOUSE_SETMODE: /* set protocol/mode */
fef8985e	200	mode = (mousemode_t *)ap->a_data;
984263bc MD	201	if (mode->level == -1)
	202	; /* don't change the current setting */
	203	else if ((mode->level < 0) \|\| (mode->level > 1))
	204	return EINVAL;
	205	else
	206	mouse_level = mode->level;
	207	return 0;
	208
	209	case MOUSE_GETLEVEL: /* get operation level */
fef8985e	210	(int )ap->a_data = mouse_level;
984263bc MD	211	return 0;
	212
	213	case MOUSE_SETLEVEL: /* set operation level */
fef8985e	214	if (((int )ap->a_data < 0) \|\| ((int )ap->a_data > 1))
984263bc	215	return EINVAL;
fef8985e	216	mouse_level = (int )ap->a_data;
984263bc MD	217	return 0;
	218
	219	case MOUSE_GETSTATUS: /* get accumulated mouse events */
6bc31f17	220	crit_enter();
fef8985e	221	(mousestatus_t )ap->a_data = mouse_status;
984263bc MD	222	mouse_status.flags = 0;
	223	mouse_status.obutton = mouse_status.button;
	224	mouse_status.dx = 0;
	225	mouse_status.dy = 0;
	226	mouse_status.dz = 0;
6bc31f17	227	crit_exit();
984263bc MD	228	return 0;
	229
	230	#if notyet
	231	case MOUSE_GETVARS: /* get internal mouse variables */
	232	case MOUSE_SETVARS: /* set internal mouse variables */
	233	return ENODEV;
	234	#endif
	235
	236	case MOUSE_READSTATE: /* read status from the device */
	237	case MOUSE_READDATA: /* read data from the device */
	238	return ENODEV;
	239	}
	240
fef8985e	241	error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
984263bc MD	242	if (error != ENOIOCTL)
984263bc MD	243	return error;
fef8985e	244	error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag);
984263bc MD	245	if (error != ENOIOCTL)
	246	return error;
	247	return ENOTTY;
	248	}
	249
	250	static void
	251	sm_attach_mouse(void *unused)
	252	{
b13267a5	253	cdev_t dev;
984263bc	254
3e82b46c MD	255	dev = make_dev(&sm_ops, SC_MOUSE, UID_ROOT, GID_WHEEL,
3e82b46c MD	256	0600, "sysmouse");
984263bc MD	257	/* sysmouse doesn't have scr_stat */
	258	}
	259
	260	SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR,
	261	sm_attach_mouse, NULL)
	262
	263	int
	264	sysmouse_event(mouse_info_t *info)
	265	{
	266	/* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
	267	static int butmap[8] = {
	268	MOUSE_MSC_BUTTON1UP \| MOUSE_MSC_BUTTON2UP \| MOUSE_MSC_BUTTON3UP,
	269	MOUSE_MSC_BUTTON2UP \| MOUSE_MSC_BUTTON3UP,
	270	MOUSE_MSC_BUTTON1UP \| MOUSE_MSC_BUTTON3UP,
	271	MOUSE_MSC_BUTTON3UP,
	272	MOUSE_MSC_BUTTON1UP \| MOUSE_MSC_BUTTON2UP,
	273	MOUSE_MSC_BUTTON2UP,
	274	MOUSE_MSC_BUTTON1UP,
	275	0,
	276	};
	277	u_char buf[8];
	278	int x, y, z;
	279	int i;
	280
	281	switch (info->operation) {
	282	case MOUSE_ACTION:
	283	mouse_status.button = info->u.data.buttons;
	284	/* FALL THROUGH */
	285	case MOUSE_MOTION_EVENT:
	286	x = info->u.data.x;
	287	y = info->u.data.y;
	288	z = info->u.data.z;
	289	break;
	290	case MOUSE_BUTTON_EVENT:
	291	x = y = z = 0;
	292	if (info->u.event.value > 0)
	293	mouse_status.button \|= info->u.event.id;
	294	else
	295	mouse_status.button &= ~info->u.event.id;
	296	break;
	297	default:
	298	return 0;
	299	}
	300
	301	mouse_status.dx += x;
	302	mouse_status.dy += y;
	303	mouse_status.dz += z;
	304	mouse_status.flags \|= ((x \|\| y \|\| z) ? MOUSE_POSCHANGED : 0)
	305	\| (mouse_status.obutton ^ mouse_status.button);
	306	if (mouse_status.flags == 0)
	307	return 0;
	308
	309	if ((sysmouse_tty == NULL) \|\| !(sysmouse_tty->t_state & TS_ISOPEN))
	310	return mouse_status.flags;
	311
	312	/* the first five bytes are compatible with MouseSystems' */
	313	buf[0] = MOUSE_MSC_SYNC
	314	\| butmap[mouse_status.button & MOUSE_STDBUTTONS];
	315	x = imax(imin(x, 255), -256);
	316	buf[1] = x >> 1;
	317	buf[3] = x - buf[1];
	318	y = -imax(imin(y, 255), -256);
	319	buf[2] = y >> 1;
	320	buf[4] = y - buf[2];
321	for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i)
322	(*linesw[sysmouse_tty->t_line].l_rint)(buf[i], sysmouse_tty);
323	if (mouse_level >= 1) {
324	/* extended part */
325	z = imax(imin(z, 127), -128);
326	buf[5] = (z >> 1) & 0x7f;
327	buf[6] = (z - (z >> 1)) & 0x7f;
328	/* buttons 4-10 */
329	buf[7] = (~mouse_status.button >> 3) & 0x7f;
330	for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i)
331	(*linesw[sysmouse_tty->t_line].l_rint)(buf[i],
332	sysmouse_tty);
333	}
334
335	return mouse_status.flags;
336	}
337
338	#endif /* !SC_NO_SYSMOUSE */