431 lines
11 KiB
C
431 lines
11 KiB
C
/* $NetBSD: wsmouse.c,v 1.5 1998/12/30 14:02:18 augustss Exp $ */
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/*
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* Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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static const char _copyright[] __attribute__ ((unused)) =
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"Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.";
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static const char _rcsid[] __attribute__ ((unused)) =
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"$NetBSD: wsmouse.c,v 1.5 1998/12/30 14:02:18 augustss Exp $";
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ms.c 8.1 (Berkeley) 6/11/93
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*/
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/*
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* Mouse driver.
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*/
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <sys/fcntl.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/syslog.h>
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#include <sys/systm.h>
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#include <sys/tty.h>
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#include <sys/signalvar.h>
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#include <sys/device.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wsmousevar.h>
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#include <dev/wscons/wseventvar.h>
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#include "wsmouse.h"
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struct wsmouse_softc {
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struct device sc_dv;
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const struct wsmouse_accessops *sc_accessops;
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void *sc_accesscookie;
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int sc_ready; /* accepting events */
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struct wseventvar sc_events; /* event queue state */
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u_int sc_mb; /* mouse button state */
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u_int sc_ub; /* user button state */
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int sc_dx; /* delta-x */
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int sc_dy; /* delta-y */
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int sc_dz; /* delta-z */
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};
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int wsmouse_match __P((struct device *, struct cfdata *, void *));
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void wsmouse_attach __P((struct device *, struct device *, void *));
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struct cfattach wsmouse_ca = {
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sizeof (struct wsmouse_softc), wsmouse_match, wsmouse_attach,
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};
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#if NWSMOUSE > 0
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extern struct cfdriver wsmouse_cd;
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#endif /* NWSMOUSE > 0 */
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cdev_decl(wsmouse);
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/*
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* Print function (for parent devices).
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*/
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int
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wsmousedevprint(aux, pnp)
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void *aux;
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const char *pnp;
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{
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if (pnp)
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printf("wsmouse at %s", pnp);
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return (UNCONF);
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}
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int
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wsmouse_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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return (1);
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}
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void
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wsmouse_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct wsmouse_softc *sc = (struct wsmouse_softc *)self;
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struct wsmousedev_attach_args *ap = aux;
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printf("\n");
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sc->sc_accessops = ap->accessops;
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sc->sc_accesscookie = ap->accesscookie;
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sc->sc_ready = 0; /* sanity */
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}
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void
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wsmouse_input(wsmousedev, btns, dx, dy, dz)
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struct device *wsmousedev;
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u_int btns; /* 0 is up */
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int dx, dy, dz;
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{
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struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmousedev;
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struct wscons_event *ev;
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int mb, ub, d, get, put, any;
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/*
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* Discard input if not ready.
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*/
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if (sc->sc_ready == 0)
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return;
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sc->sc_mb = btns;
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sc->sc_dx += dx;
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sc->sc_dy += dy;
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sc->sc_dz += dz;
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/*
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* We have at least one event (mouse button, delta-X, or
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* delta-Y; possibly all three, and possibly three separate
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* button events). Deliver these events until we are out
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* of changes or out of room. As events get delivered,
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* mark them `unchanged'.
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*/
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any = 0;
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get = sc->sc_events.get;
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put = sc->sc_events.put;
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ev = &sc->sc_events.q[put];
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/* NEXT prepares to put the next event, backing off if necessary */
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#define NEXT \
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if ((++put) % WSEVENT_QSIZE == get) { \
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put--; \
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goto out; \
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}
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/* ADVANCE completes the `put' of the event */
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#define ADVANCE \
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ev++; \
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if (put >= WSEVENT_QSIZE) { \
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put = 0; \
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ev = &sc->sc_events.q[0]; \
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} \
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any = 1
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/* TIMESTAMP sets `time' field of the event to the current time */
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#define TIMESTAMP \
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do { \
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int s; \
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s = splhigh(); \
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TIMEVAL_TO_TIMESPEC(&time, &ev->time); \
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splx(s); \
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} while (0)
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mb = sc->sc_mb;
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ub = sc->sc_ub;
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while ((d = mb ^ ub) != 0) {
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/*
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* Mouse button change. Find the first change and drop
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* it into the event queue.
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*/
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NEXT;
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ev->value = ffs(d) - 1;
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KASSERT(ev->value >= 0);
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d = 1 << ev->value;
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ev->type =
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(mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP;
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TIMESTAMP;
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ADVANCE;
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ub ^= d;
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}
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if (sc->sc_dx) {
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NEXT;
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ev->type = WSCONS_EVENT_MOUSE_DELTA_X;
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ev->value = sc->sc_dx;
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TIMESTAMP;
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ADVANCE;
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sc->sc_dx = 0;
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}
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if (sc->sc_dy) {
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NEXT;
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ev->type = WSCONS_EVENT_MOUSE_DELTA_Y;
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ev->value = sc->sc_dy;
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TIMESTAMP;
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ADVANCE;
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sc->sc_dy = 0;
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}
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if (sc->sc_dz) {
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NEXT;
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ev->type = WSCONS_EVENT_MOUSE_DELTA_Z;
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ev->value = sc->sc_dz;
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TIMESTAMP;
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ADVANCE;
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sc->sc_dz = 0;
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}
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out:
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if (any) {
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sc->sc_ub = ub;
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sc->sc_events.put = put;
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WSEVENT_WAKEUP(&sc->sc_events);
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}
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}
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int
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wsmouseopen(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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#if NWSMOUSE > 0
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struct wsmouse_softc *sc;
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int error, unit;
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unit = minor(dev);
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if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */
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(sc = wsmouse_cd.cd_devs[unit]) == NULL)
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return (ENXIO);
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if ((flags & (FREAD | FWRITE)) == FWRITE)
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return (0); /* always allow open for write
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so ioctl() is possible. */
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if (sc->sc_events.io) /* and that it's not in use */
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return (EBUSY);
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sc->sc_events.io = p;
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wsevent_init(&sc->sc_events); /* may cause sleep */
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sc->sc_ready = 1; /* start accepting events */
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/* enable the device, and punt if that's not possible */
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error = (*sc->sc_accessops->enable)(sc->sc_accesscookie);
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if (error) {
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sc->sc_ready = 0; /* stop accepting events */
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wsevent_fini(&sc->sc_events);
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sc->sc_events.io = NULL;
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return (error);
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}
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return (0);
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#else
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return (ENXIO);
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#endif /* NWSMOUSE > 0 */
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}
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int
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wsmouseclose(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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#if NWSMOUSE > 0
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struct wsmouse_softc *sc;
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int unit;
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unit = minor(dev);
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if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */
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(sc = wsmouse_cd.cd_devs[unit]) == NULL)
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return (ENXIO);
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if ((flags & (FREAD | FWRITE)) == FWRITE)
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return (0); /* see wsmouseopen() */
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(*sc->sc_accessops->disable)(sc->sc_accesscookie);
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sc->sc_ready = 0; /* stop accepting events */
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wsevent_fini(&sc->sc_events);
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sc->sc_events.io = NULL;
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return (0);
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#else
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return (ENXIO);
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#endif /* NWSMOUSE > 0 */
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}
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int
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wsmouseread(dev, uio, flags)
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dev_t dev;
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struct uio *uio;
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int flags;
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{
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#if NWSMOUSE > 0
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struct wsmouse_softc *sc;
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int unit;
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unit = minor(dev);
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if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */
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(sc = wsmouse_cd.cd_devs[unit]) == NULL)
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return (ENXIO);
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return (wsevent_read(&sc->sc_events, uio, flags));
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#else
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return (ENXIO);
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#endif /* NWSMOUSE > 0 */
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}
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int
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wsmouseioctl(dev, cmd, data, flag, p)
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dev_t dev;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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#if NWSMOUSE > 0
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struct wsmouse_softc *sc;
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int unit, error;
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unit = minor(dev);
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if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */
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(sc = wsmouse_cd.cd_devs[unit]) == NULL)
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return (ENXIO);
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/*
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* Try the generic ioctls that the wsmouse interface supports.
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*/
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switch (cmd) {
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case FIONBIO: /* we will remove this someday (soon???) */
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return (0);
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case FIOASYNC:
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sc->sc_events.async = *(int *)data != 0;
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return (0);
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case TIOCSPGRP:
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if (*(int *)data != sc->sc_events.io->p_pgid)
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return (EPERM);
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return (0);
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}
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/*
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* Try the mouse driver for WSMOUSEIO ioctls. It returns -1
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* if it didn't recognize the request.
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*/
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error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd,
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data, flag, p);
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return (error != -1 ? error : ENOTTY);
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#else
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return (ENXIO);
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#endif /* NWSMOUSE > 0 */
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}
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int
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wsmousepoll(dev, events, p)
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dev_t dev;
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int events;
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struct proc *p;
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{
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#if NWSMOUSE > 0
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struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)];
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return (wsevent_poll(&sc->sc_events, events, p));
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#else
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return (0);
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#endif /* NWSMOUSE > 0 */
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}
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