438 lines
9.6 KiB
C
438 lines
9.6 KiB
C
/* $NetBSD: ms.c,v 1.14 1996/12/23 09:10:25 veego Exp $ */
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/*
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* based on:
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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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* Header: ms.c,v 1.5 92/11/26 01:28:47 torek Exp (LBL)
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*/
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/*
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* Mouse driver.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/ioctl.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 <amiga/dev/event_var.h>
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#include <amiga/dev/vuid_event.h>
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#include <amiga/amiga/custom.h>
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#include <amiga/amiga/cia.h>
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#include <amiga/amiga/device.h>
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#include <sys/conf.h>
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#include <machine/conf.h>
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void msattach __P((struct device *, struct device *, void *));
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int msmatch __P((struct device *, struct cfdata *, void *));
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void msintr __P((void *));
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void ms_enable __P((dev_t));
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void ms_disable __P((dev_t));
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struct ms_softc {
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struct device sc_dev;
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u_char ms_horc; /* horizontal counter on last scan */
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u_char ms_verc; /* vertical counter on last scan */
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char ms_mb; /* mouse button state */
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char ms_ub; /* user button state */
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int ms_dx; /* delta-x */
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int ms_dy; /* delta-y */
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volatile int ms_ready; /* event queue is ready */
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struct evvar ms_events; /* event queue state */
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};
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struct cfattach ms_ca = {
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sizeof(struct ms_softc), msmatch, msattach
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};
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struct cfdriver ms_cd = {
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NULL, "ms", DV_DULL, NULL, 0
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};
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int
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msmatch(pdp, cfp, auxp)
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struct device *pdp;
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struct cfdata *cfp;
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void *auxp;
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{
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if (matchname((char *)auxp, "ms") &&
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cfp->cf_unit >= 0 && cfp->cf_unit <= 1) /* only two units */
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return 1;
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return 0;
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}
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void
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msattach(pdp, dp, auxp)
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struct device *pdp, *dp;
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void *auxp;
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{
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printf("\n");
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}
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/*
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* Amiga mice are hooked up to one of the two "game" ports, where
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* the main mouse is usually on the first port, and port 2 can
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* be used by a joystick. Nevertheless, we support two mouse
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* devices, /dev/mouse0 and /dev/mouse1 (with a link of /dev/mouse to
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* the device that represents the port of the mouse in use).
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*/
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/*
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* enable scanner, called when someone opens the device.
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* Assume caller already validated range of dev.
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*/
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void
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ms_enable(dev)
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dev_t dev;
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{
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struct ms_softc *ms;
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ms = (struct ms_softc *)getsoftc(ms_cd, minor(dev));
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/*
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* use this as flag to the "interrupt" to tell it when to
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* shut off (when it's reset to 0).
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*/
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ms->ms_ready = 1;
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timeout(msintr, (void *)minor(dev), 2);
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}
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/*
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* disable scanner. Just set ms_ready to 0, and after the next
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* timeout taken, no further timeouts will be initiated.
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*/
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void
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ms_disable(dev)
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dev_t dev;
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{
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struct ms_softc *ms;
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int s;
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ms = (struct ms_softc *)getsoftc(ms_cd, minor(dev));
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s = splhigh ();
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ms->ms_ready = 0;
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/*
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* sync with the interrupt
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*/
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tsleep(ms, PZERO - 1, "mouse-disable", 0);
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splx(s);
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}
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/*
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* we're emulating a mousesystems serial mouse here..
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*/
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void
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msintr(arg)
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void *arg;
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{
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static const char to_one[] = { 1, 2, 2, 4, 4, 4, 4 };
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static const int to_id[] = { MS_RIGHT, MS_MIDDLE, 0, MS_LEFT };
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struct ms_softc *ms;
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struct firm_event *fe;
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int mb, ub, d, get, put, any, unit;
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u_char pra, *horc, *verc;
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u_short pot, count;
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short dx, dy;
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unit = (int)arg;
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ms = (struct ms_softc *)getsoftc(ms_cd, unit);
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horc = ((u_char *) &count) + 1;
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verc = (u_char *) &count;
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/*
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* first read the three buttons.
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*/
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pot = custom.potgor;
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pra = ciaa.pra;
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pot >>= unit == 0 ? 8 : 12; /* contains right and middle button */
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pra >>= unit == 0 ? 6 : 7; /* contains left button */
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mb = (pot & 4) / 4 + (pot & 1) * 2 + (pra & 1) * 4;
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mb ^= 0x07;
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/*
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* read current values of counter registers
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*/
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if (unit == 0)
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count = custom.joy0dat;
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else
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count = custom.joy1dat;
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/*
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* take care of wraparound
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*/
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dx = *horc - ms->ms_horc;
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if (dx < -127)
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dx += 255;
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else if (dx > 127)
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dx -= 255;
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dy = *verc - ms->ms_verc;
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if (dy < -127)
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dy += 255;
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else if (dy > 127)
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dy -= 255;
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/*
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* remember current values for next scan
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*/
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ms->ms_horc = *horc;
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ms->ms_verc = *verc;
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ms->ms_dx = dx;
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ms->ms_dy = dy;
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ms->ms_mb = mb;
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if (dx || dy || ms->ms_ub != ms->ms_mb) {
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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 of
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* changes or out of room. As events get delivered, mark them
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* `unchanged'.
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*/
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any = 0;
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get = ms->ms_events.ev_get;
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put = ms->ms_events.ev_put;
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fe = &ms->ms_events.ev_q[put];
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mb = ms->ms_mb;
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ub = ms->ms_ub;
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while ((d = mb ^ ub) != 0) {
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/*
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* Mouse button change. Convert up to three changes
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* to the `first' change, and drop it into the event
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* queue.
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*/
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if ((++put) % EV_QSIZE == get) {
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put--;
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goto out;
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}
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d = to_one[d - 1]; /* from 1..7 to {1,2,4} */
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fe->id = to_id[d - 1]; /* from {1,2,4} to ID */
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fe->value = mb & d ? VKEY_DOWN : VKEY_UP;
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fe->time = time;
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fe++;
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if (put >= EV_QSIZE) {
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put = 0;
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fe = &ms->ms_events.ev_q[0];
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}
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any = 1;
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ub ^= d;
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}
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if (ms->ms_dx) {
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if ((++put) % EV_QSIZE == get) {
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put--;
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goto out;
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}
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fe->id = LOC_X_DELTA;
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fe->value = ms->ms_dx;
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fe->time = time;
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fe++;
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if (put >= EV_QSIZE) {
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put = 0;
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fe = &ms->ms_events.ev_q[0];
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}
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any = 1;
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ms->ms_dx = 0;
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}
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if (ms->ms_dy) {
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if ((++put) % EV_QSIZE == get) {
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put--;
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goto out;
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}
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fe->id = LOC_Y_DELTA;
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fe->value = ms->ms_dy;
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fe->time = time;
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fe++;
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if (put >= EV_QSIZE) {
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put = 0;
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fe = &ms->ms_events.ev_q[0];
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}
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any = 1;
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ms->ms_dy = 0;
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}
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out:
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if (any) {
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ms->ms_ub = ub;
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ms->ms_events.ev_put = put;
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EV_WAKEUP(&ms->ms_events);
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}
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}
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/*
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* reschedule handler, or if terminating,
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* handshake with ms_disable
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*/
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if (ms->ms_ready)
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timeout(msintr, (void *)unit, 2);
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else
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wakeup(ms);
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}
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int
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msopen(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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struct ms_softc *ms;
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int unit;
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unit = minor(dev);
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ms = (struct ms_softc *)getsoftc(ms_cd, unit);
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if (ms == NULL)
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return(EXDEV);
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if (ms->ms_events.ev_io)
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return(EBUSY);
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ms->ms_events.ev_io = p;
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ev_init(&ms->ms_events); /* may cause sleep */
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ms_enable(dev);
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return(0);
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}
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int
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msclose(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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int unit;
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struct ms_softc *ms;
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unit = minor (dev);
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ms = (struct ms_softc *)getsoftc(ms_cd, unit);
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ms_disable(dev);
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ev_fini(&ms->ms_events);
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ms->ms_events.ev_io = NULL;
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return(0);
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}
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int
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msread(dev, uio, flags)
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dev_t dev;
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struct uio *uio;
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int flags;
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{
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struct ms_softc *ms;
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ms = (struct ms_softc *)getsoftc(ms_cd, minor(dev));
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return(ev_read(&ms->ms_events, uio, flags));
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}
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int
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msioctl(dev, cmd, data, flag, p)
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dev_t dev;
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u_long cmd;
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register caddr_t data;
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int flag;
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struct proc *p;
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{
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struct ms_softc *ms;
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int unit;
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unit = minor(dev);
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ms = (struct ms_softc *)getsoftc(ms_cd, unit);
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switch (cmd) {
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case FIONBIO: /* we will remove this someday (soon???) */
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return(0);
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case FIOASYNC:
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ms->ms_events.ev_async = *(int *)data != 0;
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return(0);
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case TIOCSPGRP:
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if (*(int *)data != ms->ms_events.ev_io->p_pgid)
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return(EPERM);
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return(0);
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case VUIDGFORMAT: /* we only do firm_events */
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*(int *)data = VUID_FIRM_EVENT;
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return(0);
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case VUIDSFORMAT:
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if (*(int *)data != VUID_FIRM_EVENT)
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return(EINVAL);
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return(0);
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}
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return(ENOTTY);
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}
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int
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mspoll(dev, events, p)
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dev_t dev;
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int events;
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struct proc *p;
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{
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struct ms_softc *ms;
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ms = (struct ms_softc *)getsoftc(ms_cd, minor(dev));
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return(ev_poll(&ms->ms_events, events, p));
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}
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