/* $NetBSD: ms.c,v 1.25 2003/02/05 00:02:31 perry Exp $ */ /* * based on: * * 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 * * Header: ms.c,v 1.5 92/11/26 01:28:47 torek Exp (LBL) */ #include __KERNEL_RCSID(0, "$NetBSD: ms.c,v 1.25 2003/02/05 00:02:31 perry Exp $"); /* * Mouse driver. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include void msattach(struct device *, struct device *, void *); int msmatch(struct device *, struct cfdata *, void *); /* per-port state */ struct ms_port { int ms_portno; /* which hardware port, for msintr() */ struct callout ms_intr_ch; u_char ms_horc; /* horizontal counter on last scan */ u_char ms_verc; /* vertical counter on last scan */ char ms_mb; /* mouse button state */ char ms_ub; /* user button state */ int ms_dx; /* delta-x */ int ms_dy; /* delta-y */ volatile int ms_ready; /* event queue is ready */ struct evvar ms_events; /* event queue state */ }; #define MS_NPORTS 2 struct ms_softc { struct device sc_dev; /* base device */ struct ms_port sc_ports[MS_NPORTS]; }; CFATTACH_DECL(ms, sizeof(struct ms_softc), msmatch, msattach, NULL, NULL); void msintr(void *); void ms_enable(struct ms_port *); void ms_disable(struct ms_port *); extern struct cfdriver ms_cd; dev_type_open(msopen); dev_type_close(msclose); dev_type_read(msread); dev_type_ioctl(msioctl); dev_type_poll(mspoll); dev_type_kqfilter(mskqfilter); const struct cdevsw ms_cdevsw = { msopen, msclose, msread, nowrite, msioctl, nostop, notty, mspoll, nommap, mskqfilter, }; #define MS_UNIT(d) ((minor(d) & ~0x1) >> 1) #define MS_PORT(d) (minor(d) & 0x1) /* * Given a dev_t, return a pointer to the port's hardware state. * Assumes the unit to be valid, so do *not* use this in msopen(). */ #define MS_DEV2MSPORT(d) \ (&(((struct ms_softc *)getsoftc(ms_cd, MS_UNIT(d)))->sc_ports[MS_PORT(d)])) int msmatch(struct device *pdp, struct cfdata *cfp, void *auxp) { static int ms_matched = 0; /* Allow only one instance. */ if (!matchname((char *)auxp, "ms") || ms_matched) return 0; ms_matched = 1; return 1; } void msattach(struct device *pdp, struct device *dp, void *auxp) { struct ms_softc *sc = (void *) dp; int i; printf("\n"); for (i = 0; i < MS_NPORTS; i++) { sc->sc_ports[i].ms_portno = i; callout_init(&sc->sc_ports[i].ms_intr_ch); } } /* * Amiga mice are hooked up to one of the two "game" ports, where * the main mouse is usually on the first port, and port 2 can * be used by a joystick. Nevertheless, we support two mouse * devices, /dev/mouse0 and /dev/mouse1 (with a link of /dev/mouse to * the device that represents the port of the mouse in use). */ /* * enable scanner, called when someone opens the port. */ void ms_enable(struct ms_port *ms) { /* * use this as flag to the "interrupt" to tell it when to * shut off (when it's reset to 0). */ ms->ms_ready = 1; callout_reset(&ms->ms_intr_ch, 2, msintr, ms); } /* * disable scanner. Just set ms_ready to 0, and after the next * timeout taken, no further timeouts will be initiated. */ void ms_disable(struct ms_port *ms) { int s; s = splhigh (); ms->ms_ready = 0; /* * sync with the interrupt */ tsleep(ms, PZERO - 1, "mouse-disable", 0); splx(s); } /* * we're emulating a mousesystems serial mouse here.. */ void msintr(void *arg) { static const char to_one[] = { 1, 2, 2, 4, 4, 4, 4 }; static const int to_id[] = { MS_RIGHT, MS_MIDDLE, 0, MS_LEFT }; struct ms_port *ms = arg; struct firm_event *fe; int mb, ub, d, get, put, any, port; u_char pra, *horc, *verc; u_short pot, count; short dx, dy; port = ms->ms_portno; horc = ((u_char *) &count) + 1; verc = (u_char *) &count; /* * first read the three buttons. */ pot = custom.potgor; pra = ciaa.pra; pot >>= port == 0 ? 8 : 12; /* contains right and middle button */ pra >>= port == 0 ? 6 : 7; /* contains left button */ mb = (pot & 4) / 4 + (pot & 1) * 2 + (pra & 1) * 4; mb ^= 0x07; /* * read current values of counter registers */ if (port == 0) count = custom.joy0dat; else count = custom.joy1dat; /* * take care of wraparound */ dx = *horc - ms->ms_horc; if (dx < -127) dx += 255; else if (dx > 127) dx -= 255; dy = *verc - ms->ms_verc; if (dy < -127) dy += 255; else if (dy > 127) dy -= 255; /* * remember current values for next scan */ ms->ms_horc = *horc; ms->ms_verc = *verc; ms->ms_dx = dx; ms->ms_dy = dy; ms->ms_mb = mb; if (dx || dy || ms->ms_ub != ms->ms_mb) { /* * 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 = ms->ms_events.ev_get; put = ms->ms_events.ev_put; fe = &ms->ms_events.ev_q[put]; mb = ms->ms_mb; ub = ms->ms_ub; while ((d = mb ^ ub) != 0) { /* * Mouse button change. Convert up to three changes * to the `first' change, and drop it into the event * queue. */ if ((++put) % EV_QSIZE == get) { put--; goto out; } d = to_one[d - 1]; /* from 1..7 to {1,2,4} */ fe->id = to_id[d - 1]; /* from {1,2,4} to ID */ fe->value = mb & d ? VKEY_DOWN : VKEY_UP; fe->time = time; fe++; if (put >= EV_QSIZE) { put = 0; fe = &ms->ms_events.ev_q[0]; } any = 1; ub ^= d; } if (ms->ms_dx) { if ((++put) % EV_QSIZE == get) { put--; goto out; } fe->id = LOC_X_DELTA; fe->value = ms->ms_dx; fe->time = time; fe++; if (put >= EV_QSIZE) { put = 0; fe = &ms->ms_events.ev_q[0]; } any = 1; ms->ms_dx = 0; } if (ms->ms_dy) { if ((++put) % EV_QSIZE == get) { put--; goto out; } fe->id = LOC_Y_DELTA; fe->value = ms->ms_dy; fe->time = time; fe++; if (put >= EV_QSIZE) { put = 0; fe = &ms->ms_events.ev_q[0]; } any = 1; ms->ms_dy = 0; } out: if (any) { ms->ms_ub = ub; ms->ms_events.ev_put = put; EV_WAKEUP(&ms->ms_events); } } /* * reschedule handler, or if terminating, * handshake with ms_disable */ if (ms->ms_ready) callout_reset(&ms->ms_intr_ch, 2, msintr, ms); else wakeup(ms); } int msopen(dev_t dev, int flags, int mode, struct proc *p) { struct ms_softc *sc; struct ms_port *ms; int unit, port; unit = MS_UNIT(dev); sc = (struct ms_softc *)getsoftc(ms_cd, unit); if (sc == NULL) return(EXDEV); port = MS_PORT(dev); ms = &sc->sc_ports[port]; if (ms->ms_events.ev_io) return(EBUSY); /* initialize potgo bits for mouse mode */ custom.potgo = custom.potgor | (0xf00 << (port * 4)); ms->ms_events.ev_io = p; ev_init(&ms->ms_events); /* may cause sleep */ ms_enable(ms); return(0); } int msclose(dev_t dev, int flags, int mode, struct proc *p) { struct ms_port *ms; ms = MS_DEV2MSPORT(dev); ms_disable(ms); ev_fini(&ms->ms_events); ms->ms_events.ev_io = NULL; return(0); } int msread(dev_t dev, struct uio *uio, int flags) { struct ms_port *ms; ms = MS_DEV2MSPORT(dev); return(ev_read(&ms->ms_events, uio, flags)); } int msioctl(dev_t dev, u_long cmd, register caddr_t data, int flag, struct proc *p) { struct ms_port *ms; ms = MS_DEV2MSPORT(dev); switch (cmd) { case FIONBIO: /* we will remove this someday (soon???) */ return(0); case FIOASYNC: ms->ms_events.ev_async = *(int *)data != 0; return(0); case TIOCSPGRP: if (*(int *)data != ms->ms_events.ev_io->p_pgid) return(EPERM); return(0); case VUIDGFORMAT: /* we only do firm_events */ *(int *)data = VUID_FIRM_EVENT; return(0); case VUIDSFORMAT: if (*(int *)data != VUID_FIRM_EVENT) return(EINVAL); return(0); } return(ENOTTY); } int mspoll(dev_t dev, int events, struct proc *p) { struct ms_port *ms; ms = MS_DEV2MSPORT(dev); return(ev_poll(&ms->ms_events, events, p)); } int mskqfilter(dev, kn) dev_t dev; struct knote *kn; { struct ms_port *ms; ms = MS_DEV2MSPORT(dev); return (ev_kqfilter(&ms->ms_events, kn)); }