649 lines
16 KiB
C
649 lines
16 KiB
C
/* $NetBSD: wsmouse.c,v 1.23 2002/06/06 09:16:12 drochner 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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/*
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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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: wsmouse.c,v 1.23 2002/06/06 09:16:12 drochner Exp $");
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#include "wsmouse.h"
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#include "wsdisplay.h"
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#include "wsmux.h"
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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 <sys/vnode.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 <dev/wscons/wsmuxvar.h>
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#if defined(WSMUX_DEBUG) && NWSMUX > 0
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#define DPRINTF(x) if (wsmuxdebug) printf x
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#define DPRINTFN(n,x) if (wsmuxdebug > (n)) printf x
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extern int wsmuxdebug;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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#define INVALID_X INT_MAX
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#define INVALID_Y INT_MAX
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#define INVALID_Z INT_MAX
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struct wsmouse_softc {
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struct wsevsrc sc_base;
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const struct wsmouse_accessops *sc_accessops;
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void *sc_accesscookie;
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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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int sc_x; /* absolute-x */
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int sc_y; /* absolute-y */
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int sc_z; /* absolute-z */
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int sc_refcnt;
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u_char sc_dying; /* device is being detached */
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};
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static int wsmouse_match(struct device *, struct cfdata *, void *);
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static void wsmouse_attach(struct device *, struct device *, void *);
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static int wsmouse_detach(struct device *, int);
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static int wsmouse_activate(struct device *, enum devact);
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static int wsmouse_do_ioctl(struct wsmouse_softc *, u_long, caddr_t,
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int, struct proc *);
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#if NWSMUX > 0
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static int wsmouse_mux_open(struct wsevsrc *, struct wseventvar *);
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static int wsmouse_mux_close(struct wsevsrc *);
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#endif
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static int wsmousedoioctl(struct device *, u_long, caddr_t, int, struct proc *);
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static int wsmousedoopen(struct wsmouse_softc *, struct wseventvar *);
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struct cfattach wsmouse_ca = {
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sizeof (struct wsmouse_softc), wsmouse_match, wsmouse_attach,
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wsmouse_detach, wsmouse_activate
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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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#if NWSMUX > 0
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struct wssrcops wsmouse_srcops = {
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WSMUX_MOUSE,
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wsmouse_mux_open, wsmouse_mux_close, wsmousedoioctl, NULL, NULL
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};
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#endif
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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(void *aux, 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(struct device *parent, struct cfdata *match, 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(struct device *parent, struct device *self, 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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#if NWSMUX > 0
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int mux, error;
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#endif
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sc->sc_accessops = ap->accessops;
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sc->sc_accesscookie = ap->accesscookie;
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#if NWSMUX > 0
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sc->sc_base.me_ops = &wsmouse_srcops;
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mux = sc->sc_base.me_dv.dv_cfdata->wsmousedevcf_mux;
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if (mux >= 0) {
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error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base);
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if (error)
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printf(" attach error=%d", error);
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else
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printf(" mux %d", mux);
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}
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#else
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if (sc->sc_base.me_dv.dv_cfdata->wsmousedevcf_mux >= 0)
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printf(" (mux ignored)");
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#endif
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printf("\n");
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}
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int
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wsmouse_activate(struct device *self, enum devact act)
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{
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struct wsmouse_softc *sc = (struct wsmouse_softc *)self;
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if (act == DVACT_DEACTIVATE)
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sc->sc_dying = 1;
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return (0);
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}
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/*
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* Detach a mouse. To keep track of users of the softc we keep
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* a reference count that's incremented while inside, e.g., read.
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* If the mouse is active and the reference count is > 0 (0 is the
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* normal state) we post an event and then wait for the process
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* that had the reference to wake us up again. Then we blow away the
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* vnode and return (which will deallocate the softc).
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*/
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int
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wsmouse_detach(struct device *self, int flags)
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{
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struct wsmouse_softc *sc = (struct wsmouse_softc *)self;
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struct wseventvar *evar;
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int maj, mn;
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int s;
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#if NWSMUX > 0
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/* Tell parent mux we're leaving. */
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if (sc->sc_base.me_parent != NULL) {
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DPRINTF(("wsmouse_detach:\n"));
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wsmux_detach_sc(&sc->sc_base);
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}
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#endif
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/* If we're open ... */
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evar = sc->sc_base.me_evp;
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if (evar != NULL && evar->io != NULL) {
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s = spltty();
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if (--sc->sc_refcnt >= 0) {
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/* Wake everyone by generating a dummy event. */
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if (++evar->put >= WSEVENT_QSIZE)
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evar->put = 0;
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WSEVENT_WAKEUP(evar);
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/* Wait for processes to go away. */
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if (tsleep(sc, PZERO, "wsmdet", hz * 60))
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printf("wsmouse_detach: %s didn't detach\n",
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sc->sc_base.me_dv.dv_xname);
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}
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splx(s);
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}
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/* locate the major number */
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for (maj = 0; maj < nchrdev; maj++)
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if (cdevsw[maj].d_open == wsmouseopen)
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break;
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/* Nuke the vnodes for any open instances (calls close). */
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mn = self->dv_unit;
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vdevgone(maj, mn, mn, VCHR);
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return (0);
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}
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void
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wsmouse_input(struct device *wsmousedev, u_int btns /* 0 is up */,
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int x, int y, int z, u_int flags)
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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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struct wseventvar *evar;
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int mb, ub, d, get, put, any;
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/*
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* Discard input if not open.
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*/
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evar = sc->sc_base.me_evp;
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if (evar == NULL)
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return;
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#ifdef DIAGNOSTIC
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if (evar->q == NULL) {
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printf("wsmouse_input: evar->q=NULL\n");
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return;
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}
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#endif
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#if NWSMUX > 0
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DPRINTFN(5,("wsmouse_input: %s mux=%p, evar=%p\n",
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sc->sc_base.me_dv.dv_xname, sc->sc_base.me_parent, evar));
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#endif
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sc->sc_mb = btns;
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if (!(flags & WSMOUSE_INPUT_ABSOLUTE_X))
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sc->sc_dx += x;
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if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Y))
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sc->sc_dy += y;
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if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Z))
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sc->sc_dz += z;
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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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ub = sc->sc_ub;
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any = 0;
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get = evar->get;
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put = evar->put;
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ev = &evar->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 = &evar->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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if (flags & WSMOUSE_INPUT_ABSOLUTE_X) {
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if (sc->sc_x != x) {
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NEXT;
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ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_X;
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ev->value = x;
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TIMESTAMP;
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ADVANCE;
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sc->sc_x = x;
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}
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} else {
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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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}
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if (flags & WSMOUSE_INPUT_ABSOLUTE_Y) {
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if (sc->sc_y != y) {
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NEXT;
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ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_Y;
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ev->value = y;
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TIMESTAMP;
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ADVANCE;
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sc->sc_y = y;
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}
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} else {
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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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}
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if (flags & WSMOUSE_INPUT_ABSOLUTE_Z) {
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if (sc->sc_z != z) {
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NEXT;
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ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_Z;
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ev->value = z;
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TIMESTAMP;
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ADVANCE;
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sc->sc_z = z;
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}
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} else {
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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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}
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mb = sc->sc_mb;
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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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out:
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if (any) {
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sc->sc_ub = ub;
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evar->put = put;
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WSEVENT_WAKEUP(evar);
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#if NWSMUX > 0
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DPRINTFN(5,("wsmouse_input: %s wakeup evar=%p\n",
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sc->sc_base.me_dv.dv_xname, evar));
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#endif
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}
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}
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int
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wsmouseopen(dev_t dev, int flags, int mode, struct proc *p)
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{
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struct wsmouse_softc *sc;
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struct wseventvar *evar;
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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 NWSMUX > 0
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DPRINTF(("wsmouseopen: %s mux=%p p=%p\n", sc->sc_base.me_dv.dv_xname,
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sc->sc_base.me_parent, p));
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#endif
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if (sc->sc_dying)
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return (EIO);
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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_base.me_evp != NULL)
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return (EBUSY);
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evar = &sc->sc_base.me_evar;
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wsevent_init(evar);
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sc->sc_base.me_evp = evar;
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evar->io = p;
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error = wsmousedoopen(sc, evar);
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if (error) {
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DPRINTF(("wsmouseopen: %s open failed\n",
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sc->sc_base.me_dv.dv_xname));
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sc->sc_base.me_evp = NULL;
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wsevent_fini(evar);
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}
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return (error);
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}
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int
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wsmouseclose(dev_t dev, int flags, int mode, struct proc *p)
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{
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struct wsmouse_softc *sc =
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(struct wsmouse_softc *)wsmouse_cd.cd_devs[minor(dev)];
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struct wseventvar *evar = sc->sc_base.me_evp;
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if (evar == NULL)
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/* not open for read */
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return (0);
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sc->sc_base.me_evp = NULL;
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(*sc->sc_accessops->disable)(sc->sc_accesscookie);
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wsevent_fini(evar);
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return (0);
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}
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int
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wsmousedoopen(struct wsmouse_softc *sc, struct wseventvar *evp)
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{
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sc->sc_base.me_evp = evp;
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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 */
|