/* $NetBSD: wsmouse.c,v 1.22 2001/11/22 00:57:14 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. */ /* * 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 __KERNEL_RCSID(0, "$NetBSD: wsmouse.c,v 1.22 2001/11/22 00:57:14 augustss Exp $"); #include "wsmouse.h" #include "wsdisplay.h" #include "wsmux.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(WSMUX_DEBUG) && NWSMUX > 0 #define DPRINTF(x) if (wsmuxdebug) printf x #define DPRINTFN(n,x) if (wsmuxdebug > (n)) printf x extern int wsmuxdebug; #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif #define INVALID_X INT_MAX #define INVALID_Y INT_MAX #define INVALID_Z INT_MAX struct wsmouse_softc { struct wsevsrc sc_base; const struct wsmouse_accessops *sc_accessops; void *sc_accesscookie; 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 sc_dz; /* delta-z */ int sc_x; /* absolute-x */ int sc_y; /* absolute-y */ int sc_z; /* absolute-z */ int sc_refcnt; u_char sc_dying; /* device is being detached */ }; static int wsmouse_match(struct device *, struct cfdata *, void *); static void wsmouse_attach(struct device *, struct device *, void *); static int wsmouse_detach(struct device *, int); static int wsmouse_activate(struct device *, enum devact); static int wsmouse_do_ioctl(struct wsmouse_softc *, u_long, caddr_t, int, struct proc *); #if NWSMUX > 0 static int wsmouse_mux_open(struct wsevsrc *, struct wseventvar *); static int wsmouse_mux_close(struct wsevsrc *); #endif static int wsmousedoioctl(struct device *, u_long, caddr_t, int, struct proc *); static int wsmousedoopen(struct wsmouse_softc *, struct wseventvar *); struct cfattach wsmouse_ca = { sizeof (struct wsmouse_softc), wsmouse_match, wsmouse_attach, wsmouse_detach, wsmouse_activate }; #if NWSMOUSE > 0 extern struct cfdriver wsmouse_cd; #endif /* NWSMOUSE > 0 */ cdev_decl(wsmouse); #if NWSMUX > 0 struct wssrcops wsmouse_srcops = { WSMUX_MOUSE, wsmouse_mux_open, wsmouse_mux_close, wsmousedoioctl, NULL, NULL }; #endif /* * Print function (for parent devices). */ int wsmousedevprint(void *aux, const char *pnp) { if (pnp) printf("wsmouse at %s", pnp); return (UNCONF); } int wsmouse_match(struct device *parent, struct cfdata *match, void *aux) { return (1); } void wsmouse_attach(struct device *parent, struct device *self, void *aux) { struct wsmouse_softc *sc = (struct wsmouse_softc *)self; struct wsmousedev_attach_args *ap = aux; #if NWSMUX > 0 int mux, error; #endif sc->sc_accessops = ap->accessops; sc->sc_accesscookie = ap->accesscookie; #if NWSMUX > 0 sc->sc_base.me_ops = &wsmouse_srcops; mux = sc->sc_base.me_dv.dv_cfdata->wsmousedevcf_mux; if (mux >= 0) { error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base); if (error) printf(" attach error=%d", error); else printf(" mux %d", mux); } #else if (sc->sc_base.me_dv.dv_cfdata->wsmousedevcf_mux >= 0) printf(" (mux ignored)"); #endif printf("\n"); } int wsmouse_activate(struct device *self, enum devact act) { struct wsmouse_softc *sc = (struct wsmouse_softc *)self; if (act == DVACT_DEACTIVATE) sc->sc_dying = 1; return (0); } /* * Detach a mouse. To keep track of users of the softc we keep * a reference count that's incremented while inside, e.g., read. * If the mouse is active and the reference count is > 0 (0 is the * normal state) we post an event and then wait for the process * that had the reference to wake us up again. Then we blow away the * vnode and return (which will deallocate the softc). */ int wsmouse_detach(struct device *self, int flags) { struct wsmouse_softc *sc = (struct wsmouse_softc *)self; struct wseventvar *evar; int maj, mn; int s; #if NWSMUX > 0 /* Tell parent mux we're leaving. */ if (sc->sc_base.me_parent != NULL) { DPRINTF(("wsmouse_detach:\n")); wsmux_detach_sc(&sc->sc_base); } #endif /* If we're open ... */ evar = sc->sc_base.me_evp; if (evar != NULL && evar->io != NULL) { s = spltty(); if (--sc->sc_refcnt >= 0) { /* Wake everyone by generating a dummy event. */ if (++evar->put >= WSEVENT_QSIZE) evar->put = 0; WSEVENT_WAKEUP(evar); /* Wait for processes to go away. */ if (tsleep(sc, PZERO, "wsmdet", hz * 60)) printf("wsmouse_detach: %s didn't detach\n", sc->sc_base.me_dv.dv_xname); } splx(s); } /* locate the major number */ for (maj = 0; maj < nchrdev; maj++) if (cdevsw[maj].d_open == wsmouseopen) break; /* Nuke the vnodes for any open instances (calls close). */ mn = self->dv_unit; vdevgone(maj, mn, mn, VCHR); return (0); } void wsmouse_input(struct device *wsmousedev, u_int btns /* 0 is up */, int x, int y, int z, u_int flags) { struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmousedev; struct wscons_event *ev; struct wseventvar *evar; int mb, ub, d, get, put, any; /* * Discard input if not open. */ evar = sc->sc_base.me_evp; if (evar == NULL) return; #ifdef DIAGNOSTIC if (evar->q == NULL) { printf("wsmouse_input: evar->q=NULL\n"); return; } #endif #if NWSMUX > 0 DPRINTFN(5,("wsmouse_input: %s mux=%p, evar=%p\n", sc->sc_base.me_dv.dv_xname, sc->sc_base.me_parent, evar)); #endif sc->sc_mb = btns; if (!(flags & WSMOUSE_INPUT_ABSOLUTE_X)) sc->sc_dx += x; if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Y)) sc->sc_dy += y; if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Z)) sc->sc_dz += z; /* * 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'. */ ub = sc->sc_ub; any = 0; get = evar->get; put = evar->put; ev = &evar->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 = &evar->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) if (flags & WSMOUSE_INPUT_ABSOLUTE_X) { if (sc->sc_x != x) { NEXT; ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_X; ev->value = x; TIMESTAMP; ADVANCE; sc->sc_x = x; } } else { if (sc->sc_dx) { NEXT; ev->type = WSCONS_EVENT_MOUSE_DELTA_X; ev->value = sc->sc_dx; TIMESTAMP; ADVANCE; sc->sc_dx = 0; } } if (flags & WSMOUSE_INPUT_ABSOLUTE_Y) { if (sc->sc_y != y) { NEXT; ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_Y; ev->value = y; TIMESTAMP; ADVANCE; sc->sc_y = y; } } else { if (sc->sc_dy) { NEXT; ev->type = WSCONS_EVENT_MOUSE_DELTA_Y; ev->value = sc->sc_dy; TIMESTAMP; ADVANCE; sc->sc_dy = 0; } } if (flags & WSMOUSE_INPUT_ABSOLUTE_Z) { if (sc->sc_z != z) { NEXT; ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_Z; ev->value = z; TIMESTAMP; ADVANCE; sc->sc_z = z; } } else { if (sc->sc_dz) { NEXT; ev->type = WSCONS_EVENT_MOUSE_DELTA_Z; ev->value = sc->sc_dz; TIMESTAMP; ADVANCE; sc->sc_dz = 0; } } mb = sc->sc_mb; 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; } out: if (any) { sc->sc_ub = ub; evar->put = put; WSEVENT_WAKEUP(evar); #if NWSMUX > 0 DPRINTFN(5,("wsmouse_input: %s wakeup evar=%p\n", sc->sc_base.me_dv.dv_xname, evar)); #endif } } int wsmouseopen(dev_t dev, int flags, int mode, struct proc *p) { struct wsmouse_softc *sc; struct wseventvar *evar; 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 NWSMUX > 0 DPRINTF(("wsmouseopen: %s mux=%p p=%p\n", sc->sc_base.me_dv.dv_xname, sc->sc_base.me_parent, p)); #endif if (sc->sc_dying) return (EIO); if ((flags & (FREAD | FWRITE)) == FWRITE) return (0); /* always allow open for write so ioctl() is possible. */ #if NWSMUX > 0 if (sc->sc_base.me_parent != NULL) { /* Grab the mouse out of the greedy hands of the mux. */ DPRINTF(("wsmouseopen: detach\n")); wsmux_detach_sc(&sc->sc_base); } #endif if (sc->sc_base.me_evp != NULL) return (EBUSY); evar = &sc->sc_base.me_evar; wsevent_init(evar); sc->sc_base.me_evp = evar; evar->io = p; error = wsmousedoopen(sc, evar); if (error) { DPRINTF(("wsmouseopen: %s open failed\n", sc->sc_base.me_dv.dv_xname)); sc->sc_base.me_evp = NULL; wsevent_fini(evar); } return (error); } int wsmouseclose(dev_t dev, int flags, int mode, struct proc *p) { struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmouse_cd.cd_devs[minor(dev)]; struct wseventvar *evar = sc->sc_base.me_evp; if (evar == NULL) /* not open for read */ return (0); sc->sc_base.me_evp = NULL; (*sc->sc_accessops->disable)(sc->sc_accesscookie); wsevent_fini(evar); return (0); } int wsmousedoopen(struct wsmouse_softc *sc, struct wseventvar *evp) { sc->sc_base.me_evp = evp; sc->sc_x = INVALID_X; sc->sc_y = INVALID_Y; sc->sc_z = INVALID_Z; /* enable the device, and punt if that's not possible */ return (*sc->sc_accessops->enable)(sc->sc_accesscookie); } int wsmouseread(dev_t dev, struct uio *uio, int flags) { struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; int error; if (sc->sc_dying) return (EIO); #ifdef DIAGNOSTIC if (sc->sc_base.me_evp == NULL) { printf("wsmouseread: evp == NULL\n"); return (EINVAL); } #endif sc->sc_refcnt++; error = wsevent_read(sc->sc_base.me_evp, uio, flags); if (--sc->sc_refcnt < 0) { wakeup(sc); error = EIO; } return (error); } int wsmouseioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) { return (wsmousedoioctl(wsmouse_cd.cd_devs[minor(dev)], cmd, data, flag, p)); } /* A wrapper around the ioctl() workhorse to make reference counting easy. */ int wsmousedoioctl(struct device *dv, u_long cmd, caddr_t data, int flag, struct proc *p) { struct wsmouse_softc *sc = (struct wsmouse_softc *)dv; int error; sc->sc_refcnt++; error = wsmouse_do_ioctl(sc, cmd, data, flag, p); if (--sc->sc_refcnt < 0) wakeup(sc); return (error); } int wsmouse_do_ioctl(struct wsmouse_softc *sc, u_long cmd, caddr_t data, int flag, struct proc *p) { int error; if (sc->sc_dying) return (EIO); /* * Try the generic ioctls that the wsmouse interface supports. */ switch (cmd) { case FIONBIO: /* we will remove this someday (soon???) */ return (0); case FIOASYNC: if (sc->sc_base.me_evp == NULL) return (EINVAL); sc->sc_base.me_evp->async = *(int *)data != 0; return (0); case TIOCSPGRP: if (sc->sc_base.me_evp == NULL) return (EINVAL); if (*(int *)data != sc->sc_base.me_evp->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); } int wsmousepoll(dev_t dev, int events, struct proc *p) { struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; if (sc->sc_base.me_evp == NULL) return (EINVAL); return (wsevent_poll(sc->sc_base.me_evp, events, p)); } #if NWSMUX > 0 int wsmouse_mux_open(struct wsevsrc *me, struct wseventvar *evp) { struct wsmouse_softc *sc = (struct wsmouse_softc *)me; if (sc->sc_base.me_evp != NULL) return (EBUSY); return wsmousedoopen(sc, evp); } int wsmouse_mux_close(struct wsevsrc *me) { struct wsmouse_softc *sc = (struct wsmouse_softc *)me; sc->sc_base.me_evp = NULL; (*sc->sc_accessops->disable)(sc->sc_accesscookie); return (0); } int wsmouse_add_mux(int unit, struct wsmux_softc *muxsc) { struct wsmouse_softc *sc; if (unit < 0 || unit >= wsmouse_cd.cd_ndevs || (sc = wsmouse_cd.cd_devs[unit]) == NULL) return (ENXIO); if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL) return (EBUSY); return (wsmux_attach_sc(muxsc, &sc->sc_base)); } #endif /* NWSMUX > 0 */