/* $NetBSD: wsmouse.c,v 1.62 2009/01/15 04:22:11 yamt Exp $ */ /*- * Copyright (c) 2006 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Julio M. Merino Vidal. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * 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. 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 1.62 2009/01/15 04:22:11 yamt 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 #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_dw; /* delta-w */ int sc_x; /* absolute-x */ int sc_y; /* absolute-y */ int sc_z; /* absolute-z */ int sc_w; /* absolute-w */ int sc_refcnt; u_char sc_dying; /* device is being detached */ struct wsmouse_repeat sc_repeat; int sc_repeat_button; callout_t sc_repeat_callout; unsigned int sc_repeat_delay; }; static int wsmouse_match(device_t, cfdata_t, void *); static void wsmouse_attach(device_t, device_t, void *); static int wsmouse_detach(device_t, int); static int wsmouse_activate(device_t, enum devact); static int wsmouse_do_ioctl(struct wsmouse_softc *, u_long, void *, int, struct lwp *); #if NWSMUX > 0 static int wsmouse_mux_open(struct wsevsrc *, struct wseventvar *); static int wsmouse_mux_close(struct wsevsrc *); #endif static int wsmousedoioctl(device_t, u_long, void *, int, struct lwp *); static int wsmousedoopen(struct wsmouse_softc *, struct wseventvar *); CFATTACH_DECL_NEW(wsmouse, sizeof (struct wsmouse_softc), wsmouse_match, wsmouse_attach, wsmouse_detach, wsmouse_activate); static void wsmouse_repeat(void *v); extern struct cfdriver wsmouse_cd; dev_type_open(wsmouseopen); dev_type_close(wsmouseclose); dev_type_read(wsmouseread); dev_type_ioctl(wsmouseioctl); dev_type_poll(wsmousepoll); dev_type_kqfilter(wsmousekqfilter); const struct cdevsw wsmouse_cdevsw = { wsmouseopen, wsmouseclose, wsmouseread, nowrite, wsmouseioctl, nostop, notty, wsmousepoll, nommap, wsmousekqfilter, D_OTHER }; #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) aprint_normal("wsmouse at %s", pnp); return (UNCONF); } int wsmouse_match(device_t parent, cfdata_t match, void *aux) { return (1); } void wsmouse_attach(device_t parent, device_t self, void *aux) { struct wsmouse_softc *sc = device_private(self); struct wsmousedev_attach_args *ap = aux; #if NWSMUX > 0 int mux, error; #endif sc->sc_base.me_dv = self; sc->sc_accessops = ap->accessops; sc->sc_accesscookie = ap->accesscookie; /* Initialize button repeating. */ memset(&sc->sc_repeat, 0, sizeof(sc->sc_repeat)); sc->sc_repeat_button = -1; sc->sc_repeat_delay = 0; callout_init(&sc->sc_repeat_callout, 0); callout_setfunc(&sc->sc_repeat_callout, wsmouse_repeat, sc); #if NWSMUX > 0 sc->sc_base.me_ops = &wsmouse_srcops; mux = device_cfdata(self)->wsmousedevcf_mux; if (mux >= 0) { error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base); if (error) aprint_error(" attach error=%d", error); else aprint_normal(" mux %d", mux); } #else if (device_cfdata(self)->wsmousedevcf_mux >= 0) aprint_normal(" (mux ignored)"); #endif aprint_naive("\n"); aprint_normal("\n"); if (!pmf_device_register(self, NULL, NULL)) aprint_error_dev(self, "couldn't establish power handler\n"); } int wsmouse_activate(device_t self, enum devact act) { struct wsmouse_softc *sc = device_private(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(device_t self, int flags) { struct wsmouse_softc *sc = device_private(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) { struct wscons_event event; /* Wake everyone by generating a dummy event. */ event.type = 0; event.value = 0; if (wsevent_inject(evar, &event, 1) != 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", device_xname(self)); } splx(s); } /* locate the major number */ maj = cdevsw_lookup_major(&wsmouse_cdevsw); /* Nuke the vnodes for any open instances (calls close). */ mn = device_unit(self); vdevgone(maj, mn, mn, VCHR); return (0); } void wsmouse_input(device_t wsmousedev, u_int btns /* 0 is up */, int x, int y, int z, int w, u_int flags) { struct wsmouse_softc *sc = device_private(wsmousedev); struct wseventvar *evar; int mb, ub, d, nevents; /* one for each dimension (4) + a bit for each button */ struct wscons_event events[4 + sizeof(d) * 8]; /* * 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", device_xname(sc->sc_base.me_dv), 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; if (!(flags & WSMOUSE_INPUT_ABSOLUTE_W)) sc->sc_dw += w; /* * 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; nevents = 0; if (flags & WSMOUSE_INPUT_ABSOLUTE_X) { if (sc->sc_x != x) { events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_X; events[nevents].value = x; nevents++; } } else { if (sc->sc_dx) { events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_X; events[nevents].value = sc->sc_dx; nevents++; } } if (flags & WSMOUSE_INPUT_ABSOLUTE_Y) { if (sc->sc_y != y) { events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_Y; events[nevents].value = y; nevents++; } } else { if (sc->sc_dy) { events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_Y; events[nevents].value = sc->sc_dy; nevents++; } } if (flags & WSMOUSE_INPUT_ABSOLUTE_Z) { if (sc->sc_z != z) { events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_Z; events[nevents].value = z; nevents++; } } else { if (sc->sc_dz) { events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_Z; events[nevents].value = sc->sc_dz; nevents++; } } if (flags & WSMOUSE_INPUT_ABSOLUTE_W) { if (sc->sc_w != w) { events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_W; events[nevents].value = w; nevents++; } } else { if (sc->sc_dw) { events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_W; events[nevents].value = sc->sc_dw; nevents++; } } mb = sc->sc_mb; while ((d = mb ^ ub) != 0) { int btnno; /* * Cancel button repeating if button status changed. */ if (sc->sc_repeat_button != -1) { KASSERT(sc->sc_repeat_button >= 0); KASSERT(sc->sc_repeat.wr_buttons & (1 << sc->sc_repeat_button)); ub &= ~(1 << sc->sc_repeat_button); sc->sc_repeat_button = -1; callout_stop(&sc->sc_repeat_callout); } /* * Mouse button change. Find the first change and drop * it into the event queue. */ btnno = ffs(d) - 1; KASSERT(btnno >= 0); if (nevents >= sizeof(events) / sizeof(events[0])) { aprint_error_dev(sc->sc_base.me_dv, "Event queue full (button status mb=0x%x" " ub=0x%x)\n", mb, ub); break; } events[nevents].type = (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP; events[nevents].value = btnno; nevents++; ub ^= (1 << btnno); /* * Program button repeating if configured for this button. */ if ((mb & d) && (sc->sc_repeat.wr_buttons & (1 << btnno)) && sc->sc_repeat.wr_delay_first > 0) { sc->sc_repeat_button = btnno; sc->sc_repeat_delay = sc->sc_repeat.wr_delay_first; callout_schedule(&sc->sc_repeat_callout, mstohz(sc->sc_repeat_delay)); } } if (nevents == 0 || wsevent_inject(evar, events, nevents) == 0) { /* All events were correctly injected into the queue. * Synchronize the mouse's status with what the user * has received. */ sc->sc_x = x; sc->sc_dx = 0; sc->sc_y = y; sc->sc_dy = 0; sc->sc_z = z; sc->sc_dz = 0; sc->sc_w = w; sc->sc_dw = 0; sc->sc_ub = ub; #if NWSMUX > 0 DPRINTFN(5,("wsmouse_input: %s wakeup evar=%p\n", device_xname(sc->sc_base.me_dv), evar)); #endif } } static void wsmouse_repeat(void *v) { int oldspl; unsigned int newdelay; struct wsmouse_softc *sc; struct wscons_event events[2]; oldspl = spltty(); sc = (struct wsmouse_softc *)v; if (sc->sc_repeat_button == -1) { /* Race condition: a "button up" event came in when * this function was already called but did not do * spltty() yet. */ splx(oldspl); return; } KASSERT(sc->sc_repeat_button >= 0); KASSERT(sc->sc_repeat.wr_buttons & (1 << sc->sc_repeat_button)); newdelay = sc->sc_repeat_delay; events[0].type = WSCONS_EVENT_MOUSE_UP; events[0].value = sc->sc_repeat_button; events[1].type = WSCONS_EVENT_MOUSE_DOWN; events[1].value = sc->sc_repeat_button; if (wsevent_inject(sc->sc_base.me_evp, events, 2) == 0) { sc->sc_ub = 1 << sc->sc_repeat_button; if (newdelay - sc->sc_repeat.wr_delay_decrement < sc->sc_repeat.wr_delay_minimum) newdelay = sc->sc_repeat.wr_delay_minimum; else if (newdelay > sc->sc_repeat.wr_delay_minimum) newdelay -= sc->sc_repeat.wr_delay_decrement; KASSERT(newdelay >= sc->sc_repeat.wr_delay_minimum && newdelay <= sc->sc_repeat.wr_delay_first); } /* * Reprogram the repeating event. */ sc->sc_repeat_delay = newdelay; callout_schedule(&sc->sc_repeat_callout, mstohz(newdelay)); splx(oldspl); } int wsmouseopen(dev_t dev, int flags, int mode, struct lwp *l) { struct wsmouse_softc *sc; struct wseventvar *evar; int error; sc = device_lookup_private(&wsmouse_cd, minor(dev)); if (sc == NULL) return ENXIO; #if NWSMUX > 0 DPRINTF(("wsmouseopen: %s mux=%p p=%p\n", device_xname(sc->sc_base.me_dv), sc->sc_base.me_parent, l)); #endif if (sc->sc_dying) return (EIO); if ((flags & (FREAD | FWRITE)) == FWRITE) return (0); /* always allow open for write so ioctl() is possible. */ if (sc->sc_base.me_evp != NULL) return (EBUSY); evar = &sc->sc_base.me_evar; wsevent_init(evar, l->l_proc); sc->sc_base.me_evp = evar; error = wsmousedoopen(sc, evar); if (error) { DPRINTF(("wsmouseopen: %s open failed\n", device_xname(sc->sc_base.me_dv))); sc->sc_base.me_evp = NULL; wsevent_fini(evar); } return (error); } int wsmouseclose(dev_t dev, int flags, int mode, struct lwp *l) { struct wsmouse_softc *sc = device_lookup_private(&wsmouse_cd, 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; /* Stop button repeating when messing with the device. */ if (sc->sc_repeat_button != -1) { KASSERT(sc->sc_repeat_button >= 0); sc->sc_repeat_button = -1; callout_stop(&sc->sc_repeat_callout); } /* 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 = device_lookup_private(&wsmouse_cd, 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, void *data, int flag, struct lwp *l) { return (wsmousedoioctl(device_lookup(&wsmouse_cd, minor(dev)), cmd, data, flag, l)); } /* A wrapper around the ioctl() workhorse to make reference counting easy. */ int wsmousedoioctl(device_t dv, u_long cmd, void *data, int flag, struct lwp *l) { struct wsmouse_softc *sc = device_private(dv); int error; sc->sc_refcnt++; error = wsmouse_do_ioctl(sc, cmd, data, flag, l); if (--sc->sc_refcnt < 0) wakeup(sc); return (error); } int wsmouse_do_ioctl(struct wsmouse_softc *sc, u_long cmd, void *data, int flag, struct lwp *l) { int error; struct wsmouse_repeat *wr; 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 FIOSETOWN: if (sc->sc_base.me_evp == NULL) return (EINVAL); if (-*(int *)data != sc->sc_base.me_evp->io->p_pgid && *(int *)data != sc->sc_base.me_evp->io->p_pid) return (EPERM); 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 wsmouse specific ioctls. */ switch (cmd) { case WSMOUSEIO_GETREPEAT: wr = (struct wsmouse_repeat *)data; memcpy(wr, &sc->sc_repeat, sizeof(sc->sc_repeat)); return 0; case WSMOUSEIO_SETREPEAT: if ((flag & FWRITE) == 0) return EACCES; /* Validate input data. */ wr = (struct wsmouse_repeat *)data; if (wr->wr_delay_first != 0 && (wr->wr_delay_first < wr->wr_delay_decrement || wr->wr_delay_first < wr->wr_delay_minimum || wr->wr_delay_first < wr->wr_delay_minimum + wr->wr_delay_decrement)) return EINVAL; /* Stop current repeating and set new data. */ sc->sc_repeat_button = -1; callout_stop(&sc->sc_repeat_callout); memcpy(&sc->sc_repeat, wr, sizeof(sc->sc_repeat)); return 0; case WSMOUSEIO_SETVERSION: return wsevent_setversion(sc->sc_base.me_evp, *(int *)data); } /* * 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, l); return (error); /* may be EPASSTHROUGH */ } int wsmousepoll(dev_t dev, int events, struct lwp *l) { struct wsmouse_softc *sc = device_lookup_private(&wsmouse_cd, minor(dev)); if (sc->sc_base.me_evp == NULL) return (POLLERR); return (wsevent_poll(sc->sc_base.me_evp, events, l)); } int wsmousekqfilter(dev_t dev, struct knote *kn) { struct wsmouse_softc *sc = device_lookup_private(&wsmouse_cd, minor(dev)); if (sc->sc_base.me_evp == NULL) return (1); return (wsevent_kqfilter(sc->sc_base.me_evp, kn)); } #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; sc = device_lookup_private(&wsmouse_cd, unit); if (sc == 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 */