/* $NetBSD: wsmouse.c,v 1.3 1998/07/25 20:02:21 augustss Exp $ */ /* * Copyright (c) 1996, 1997 Christopher G. Demetriou. 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. * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou * for the NetBSD Project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ static const char _copyright[] __attribute__ ((unused)) = "Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved."; static const char _rcsid[] __attribute__ ((unused)) = "$NetBSD: wsmouse.c,v 1.3 1998/07/25 20:02:21 augustss Exp $"; /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * 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. * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)ms.c 8.1 (Berkeley) 6/11/93 */ /* * Mouse driver. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "wsmouse.h" struct wsmouse_softc { struct device sc_dv; const struct wsmouse_accessops *sc_accessops; void *sc_accesscookie; int sc_ready; /* accepting events */ struct wseventvar sc_events; /* event queue state */ u_int sc_mb; /* mouse button state */ u_int sc_ub; /* user button state */ int sc_dx; /* delta-x */ int sc_dy; /* delta-y */ }; int wsmouse_match __P((struct device *, struct cfdata *, void *)); void wsmouse_attach __P((struct device *, struct device *, void *)); struct cfattach wsmouse_ca = { sizeof (struct wsmouse_softc), wsmouse_match, wsmouse_attach, }; #if NWSMOUSE > 0 extern struct cfdriver wsmouse_cd; #endif /* NWSMOUSE > 0 */ cdev_decl(wsmouse); /* * Print function (for parent devices). */ int wsmousedevprint(aux, pnp) void *aux; const char *pnp; { if (pnp) printf("wsmouse at %s", pnp); return (UNCONF); } int wsmouse_match(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { return (1); } void wsmouse_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct wsmouse_softc *sc = (struct wsmouse_softc *)self; struct wsmousedev_attach_args *ap = aux; printf("\n"); sc->sc_accessops = ap->accessops; sc->sc_accesscookie = ap->accesscookie; sc->sc_ready = 0; /* sanity */ } void wsmouse_input(wsmousedev, btns, dx, dy) struct device *wsmousedev; u_int btns; /* 0 is up */ int dx, dy; { struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmousedev; struct wscons_event *ev; int mb, ub, d, get, put, any; /* * Discard input if not ready. */ if (sc->sc_ready == 0) return; sc->sc_mb = btns; sc->sc_dx += dx; sc->sc_dy += dy; /* * We have at least one event (mouse button, delta-X, or * delta-Y; possibly all three, and possibly three separate * button events). Deliver these events until we are out * of changes or out of room. As events get delivered, * mark them `unchanged'. */ any = 0; get = sc->sc_events.get; put = sc->sc_events.put; ev = &sc->sc_events.q[put]; /* NEXT prepares to put the next event, backing off if necessary */ #define NEXT \ if ((++put) % WSEVENT_QSIZE == get) { \ put--; \ goto out; \ } /* ADVANCE completes the `put' of the event */ #define ADVANCE \ ev++; \ if (put >= WSEVENT_QSIZE) { \ put = 0; \ ev = &sc->sc_events.q[0]; \ } \ any = 1 /* TIMESTAMP sets `time' field of the event to the current time */ #define TIMESTAMP \ do { \ int s; \ s = splhigh(); \ TIMEVAL_TO_TIMESPEC(&time, &ev->time); \ splx(s); \ } while (0) mb = sc->sc_mb; ub = sc->sc_ub; while ((d = mb ^ ub) != 0) { /* * Mouse button change. Find the first change and drop * it into the event queue. */ NEXT; ev->value = ffs(d) - 1; KASSERT(ev->value >= 0); d = 1 << ev->value; ev->type = (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP; TIMESTAMP; ADVANCE; ub ^= d; } if (sc->sc_dx) { NEXT; ev->type = WSCONS_EVENT_MOUSE_DELTA_X; ev->value = sc->sc_dx; TIMESTAMP; ADVANCE; sc->sc_dx = 0; } if (sc->sc_dy) { NEXT; ev->type = WSCONS_EVENT_MOUSE_DELTA_Y; ev->value = sc->sc_dy; TIMESTAMP; ADVANCE; sc->sc_dy = 0; } out: if (any) { sc->sc_ub = ub; sc->sc_events.put = put; WSEVENT_WAKEUP(&sc->sc_events); } } int wsmouseopen(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { #if NWSMOUSE > 0 struct wsmouse_softc *sc; int error, unit; unit = minor(dev); if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ (sc = wsmouse_cd.cd_devs[unit]) == NULL) return (ENXIO); if (sc->sc_events.io) /* and that it's not in use */ return (EBUSY); sc->sc_events.io = p; wsevent_init(&sc->sc_events); /* may cause sleep */ sc->sc_ready = 1; /* start accepting events */ /* enable the device, and punt if that's not possible */ error = (*sc->sc_accessops->enable)(sc->sc_accesscookie); if (error) { sc->sc_ready = 0; /* stop accepting events */ wsevent_fini(&sc->sc_events); sc->sc_events.io = NULL; return (error); } return (0); #else return (ENXIO); #endif /* NWSMOUSE > 0 */ } int wsmouseclose(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { #if NWSMOUSE > 0 struct wsmouse_softc *sc; int unit; unit = minor(dev); if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ (sc = wsmouse_cd.cd_devs[unit]) == NULL) return (ENXIO); (*sc->sc_accessops->disable)(sc->sc_accesscookie); sc->sc_ready = 0; /* stop accepting events */ wsevent_fini(&sc->sc_events); sc->sc_events.io = NULL; return (0); #else return (ENXIO); #endif /* NWSMOUSE > 0 */ } int wsmouseread(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { #if NWSMOUSE > 0 struct wsmouse_softc *sc; int unit; unit = minor(dev); if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ (sc = wsmouse_cd.cd_devs[unit]) == NULL) return (ENXIO); return (wsevent_read(&sc->sc_events, uio, flags)); #else return (ENXIO); #endif /* NWSMOUSE > 0 */ } int wsmouseioctl(dev, cmd, data, flag, p) dev_t dev; u_long cmd; caddr_t data; int flag; struct proc *p; { #if NWSMOUSE > 0 struct wsmouse_softc *sc; int unit, error; unit = minor(dev); if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ (sc = wsmouse_cd.cd_devs[unit]) == NULL) return (ENXIO); /* * Try the generic ioctls that the wsmouse interface supports. */ switch (cmd) { case FIONBIO: /* we will remove this someday (soon???) */ return (0); case FIOASYNC: sc->sc_events.async = *(int *)data != 0; return (0); case TIOCSPGRP: if (*(int *)data != sc->sc_events.io->p_pgid) return (EPERM); return (0); } /* * Try the mouse driver for WSMOUSEIO ioctls. It returns -1 * if it didn't recognize the request. */ error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, data, flag, p); return (error != -1 ? error : ENOTTY); #else return (ENXIO); #endif /* NWSMOUSE > 0 */ } int wsmousepoll(dev, events, p) dev_t dev; int events; struct proc *p; { #if NWSMOUSE > 0 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; return (wsevent_poll(&sc->sc_events, events, p)); #else return (0); #endif /* NWSMOUSE > 0 */ }