/* $OpenBSD: joy.c,v 1.15 2015/02/10 21:58:16 miod Exp $ */ /* $NetBSD: joy.c,v 1.3 1996/05/05 19:46:15 christos Exp $ */ /*- * Copyright (c) 1995 Jean-Marc Zucconi * All rights reserved. * * Ported to NetBSD by Matthieu Herrb * * 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 * in this position and unchanged. * 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. 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. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include static int joy_get_tick(void); struct cfdriver joy_cd = { NULL, "joy", DV_DULL }; int joyopen(dev_t dev, int flag, int mode, struct proc *p) { int unit = JOYUNIT(dev); int i = JOYPART(dev); struct joy_softc *sc; if (unit >= joy_cd.cd_ndevs) return (ENXIO); sc = joy_cd.cd_devs[unit]; if (sc == NULL) return (ENXIO); if (sc->timeout[i]) return EBUSY; sc->x_off[i] = sc->y_off[i] = 0; sc->timeout[i] = JOY_TIMEOUT; return 0; } int joyclose(dev_t dev, int flag, int mode, struct proc *p) { int unit = JOYUNIT(dev); int i = JOYPART(dev); struct joy_softc *sc = joy_cd.cd_devs[unit]; sc->timeout[i] = 0; return 0; } int joyread(dev_t dev, struct uio *uio, int flag) { int unit = JOYUNIT(dev); struct joy_softc *sc = joy_cd.cd_devs[unit]; struct joystick c; int port = sc->port; int i, t0, t1; int state = 0, x = 0, y = 0; disable_intr(); outb(port, 0xff); t0 = joy_get_tick(); t1 = t0; i = USEC2TICKS(sc->timeout[JOYPART(dev)]); while (t0 - t1 < i) { state = inb(port); if (JOYPART(dev) == 1) state >>= 2; t1 = joy_get_tick(); if (t1 > t0) t1 -= TIMER_FREQ / hz; if (!x && !(state & 0x01)) x = t1; if (!y && !(state & 0x02)) y = t1; if (x && y) break; } enable_intr(); c.x = x ? sc->x_off[JOYPART(dev)] + TICKS2USEC(t0 - x) : 0x80000000; c.y = y ? sc->y_off[JOYPART(dev)] + TICKS2USEC(t0 - y) : 0x80000000; state >>= 4; c.b1 = ~state & 1; c.b2 = ~(state >> 1) & 1; return uiomove((caddr_t) & c, sizeof(struct joystick), uio); } int joyioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) { int unit = JOYUNIT(dev); struct joy_softc *sc = joy_cd.cd_devs[unit]; int i = JOYPART(dev); int x; switch (cmd) { case JOY_SETTIMEOUT: x = *(int *) data; if (x < 1 || x > 10000) /* 10ms maximum! */ return EINVAL; sc->timeout[i] = x; break; case JOY_GETTIMEOUT: *(int *) data = sc->timeout[i]; break; case JOY_SET_X_OFFSET: sc->x_off[i] = *(int *) data; break; case JOY_SET_Y_OFFSET: sc->y_off[i] = *(int *) data; break; case JOY_GET_X_OFFSET: *(int *) data = sc->x_off[i]; break; case JOY_GET_Y_OFFSET: *(int *) data = sc->y_off[i]; break; default: return ENXIO; } return 0; } static int joy_get_tick(void) { int low, high; outb(IO_TIMER1 + TIMER_MODE, TIMER_SEL0); low = inb(IO_TIMER1 + TIMER_CNTR0); high = inb(IO_TIMER1 + TIMER_CNTR0); return (high << 8) | low; }