441 lines
9.7 KiB
C
441 lines
9.7 KiB
C
/* $NetBSD: qmouse.c,v 1.3 1996/03/17 01:24:36 thorpej Exp $ */
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/*
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* Copyright (c) Scott Stevens 1995 All rights reserved
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* Copyright (c) Melvin Tang-Richardson 1995 All rights reserved
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* Copyright (c) Mark Brinicombe 1995 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 the RiscBSD team.
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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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* Quadrature mouse driver
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/kernel.h>
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#include <sys/types.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/time.h>
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#include <sys/errno.h>
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#include <dev/cons.h>
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#include <sys/fcntl.h>
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#include <sys/signalvar.h>
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#include <sys/vnode.h>
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#include <sys/time.h>
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#include <arm32/mainbus/mainbus.h>
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#include <machine/irqhandler.h>
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#include <machine/katelib.h>
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#include <machine/iomd.h>
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#include <machine/qmouse.h>
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#include "quadmouse.h"
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#define TIMER1_COUNT 40000 /* 50Hz */
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#define QMOUSE_BSIZE 12*64
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struct quadmouse_softc {
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struct device sc_device;
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irqhandler_t sc_ih;
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int sc_iobase;
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struct selinfo sc_rsel;
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#define QMOUSE_OPEN 0x01
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#define QMOUSE_ASLEEP 0x02
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int sc_state;
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int boundx, boundy, bounda, boundb; /* Bounding box. x,y is bottom left */
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int origx, origy;
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int xmult, ymult; /* Multipliers */
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int lastx, lasty, lastb;
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struct proc *proc;
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struct clist buffer;
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};
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int quadmouseprobe __P((struct device *, void *, void *));
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void quadmouseattach __P((struct device *, struct device *, void *));
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int quadmouseopen __P((dev_t, int, int, struct proc *));
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int quadmouseclose __P((dev_t, int, int, struct proc *));
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int strncmp __P((const char *, const char *, size_t));
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int quadmouseintr (struct quadmouse_softc *);
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struct cfattach quadmouse_ca = {
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sizeof(struct quadmouse_softc), quadmouseprobe, quadmouseattach
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};
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struct cfdriver quadmouse_cd = {
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NULL, "quadmouse", DV_DULL
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};
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int
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quadmouseprobe(parent, match, aux)
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struct device *parent;
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void *match;
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void *aux;
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{
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/* struct mainbus_attach_args *mb = aux;*/
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int id;
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/* Make sure we have an IOMD we understand */
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id = ReadByte(IOMD_ID0) | (ReadByte(IOMD_ID1) << 8);
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/* So far I only know about this IOMD */
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switch (id) {
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case RPC600_IOMD_ID:
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return(1);
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break;
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default:
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printf("quadmouse: Unknown IOMD id=%04x", id);
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break;
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}
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return(0);
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}
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void
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quadmouseattach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct quadmouse_softc *sc = (void *)self;
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struct mainbus_attach_args *mb = aux;
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sc->sc_iobase = mb->mb_iobase;
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/* Check for a known IOMD chip */
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sc->sc_ih.ih_func = quadmouseintr;
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sc->sc_ih.ih_arg = sc;
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sc->sc_ih.ih_level = IPL_TTY;
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/* Set up origin and multipliers */
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sc->origx = 0;
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sc->origy = 0;
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sc->xmult = 2;
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sc->ymult = 2;
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/* Set up bounding box */
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sc->boundx = -4095;
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sc->boundy = -4095;
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sc->bounda = 4096;
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sc->boundb = 4096;
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sc->sc_state = 0;
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WriteWord(IOMD_MOUSEX, sc->origx);
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WriteWord(IOMD_MOUSEY, sc->origy);
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printf("\n");
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}
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int
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quadmouseopen(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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struct quadmouse_softc *sc;
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int unit = minor(dev);
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if (unit >= quadmouse_cd.cd_ndevs)
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return(ENXIO);
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sc = quadmouse_cd.cd_devs[unit];
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if (!sc) return(ENXIO);
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if (sc->sc_state & QMOUSE_OPEN) return(EBUSY);
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sc->proc = p;
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sc->lastx = -1;
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sc->lasty = -1;
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sc->lastb = -1;
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/* initialise buffer */
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if(clalloc(&sc->buffer, QMOUSE_BSIZE, 0) == -1)
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return(ENOMEM);
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sc->sc_state |= QMOUSE_OPEN;
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WriteByte(IOMD_T1LOW, (TIMER1_COUNT >> 0) & 0xff);
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WriteByte(IOMD_T1HIGH, (TIMER1_COUNT >> 8) & 0xff);
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WriteByte(IOMD_T1GO, 0);
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if (irq_claim(IRQ_TIMER1, &sc->sc_ih))
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panic("Cannot claim TIMER1 IRQ for quadmouse%d\n", sc->sc_device.dv_unit);
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return(0);
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}
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int
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quadmouseclose(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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int unit = minor (dev);
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struct quadmouse_softc *sc = quadmouse_cd.cd_devs[unit];
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if (irq_release(IRQ_TIMER1, &sc->sc_ih) != 0)
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panic("Cannot release IRA\n");
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sc->proc = NULL;
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sc->sc_state = 0;
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clfree(&sc->buffer);
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return(0);
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}
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int
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quadmouseread(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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int unit = minor(dev);
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struct quadmouse_softc *sc = quadmouse_cd.cd_devs[unit];
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int error;
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int s;
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int length;
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u_char buffer[128];
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s=spltty();
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while(sc->buffer.c_cc==0) {
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if(flag & IO_NDELAY) {
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(void)splx(s);
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return(EWOULDBLOCK);
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}
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sc->sc_state |= QMOUSE_ASLEEP;
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if((error = tsleep((caddr_t)sc, PZERO | PCATCH, "quadmouseread", 0))) {
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sc->sc_state &= ~QMOUSE_ASLEEP;
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(void)splx(s);
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return(error);
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}
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}
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while(sc->buffer.c_cc>0 && uio->uio_resid>0) {
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length=min(sc->buffer.c_cc, uio->uio_resid);
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if(length>sizeof(buffer))
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length=sizeof(buffer);
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(void) q_to_b(&sc->buffer, buffer, length);
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if(error = (uiomove(buffer, length, uio)))
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break;
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}
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(void)splx(s);
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return(error);
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}
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#define FMT_START int x = ReadWord(IOMD_MOUSEX)&0xffff; \
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int y = ReadWord(IOMD_MOUSEY)&0xffff; \
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int b = ReadByte(IO_MOUSE_BUTTONS)&0x70; \
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if(x&0x8000) x|=0xffff0000; \
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if(y&0x8000) y|=0xffff0000; \
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x = (x - sc->origx); \
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y = (y - sc->origy); \
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if (x<(sc->boundx)) x = sc->boundx; \
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WriteWord(IOMD_MOUSEX, x + sc->origx); \
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if (x>(sc->bounda)) x = sc->bounda; \
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WriteWord(IOMD_MOUSEX, x + sc->origx); \
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if (y<(sc->boundy)) y = sc->boundy; \
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WriteWord(IOMD_MOUSEY, y + sc->origy); \
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if (y>(sc->boundb)) y = sc->boundb; \
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WriteWord(IOMD_MOUSEY, y + sc->origy); \
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x=x*sc->xmult; \
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y=y*sc->ymult;
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#define FMT_END
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int
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quadmouseioctl(dev, cmd, data, flag, p)
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dev_t dev;
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int cmd;
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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 quadmouse_softc *sc = quadmouse_cd.cd_devs[minor(dev)];
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switch (cmd) {
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case QUADMOUSE_WRITEX:
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WriteWord(IOMD_MOUSEX, *(int *)data+sc->origx);
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return 0;
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case QUADMOUSE_WRITEY:
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WriteWord(IOMD_MOUSEY, *(int *)data+sc->origy);
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return 0;
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case QUADMOUSE_SETSTATE:
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{
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register struct mouse_state *co = (void *)data;
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WriteWord(IOMD_MOUSEX, co->x);
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WriteWord(IOMD_MOUSEY, co->y);
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/* Silly, but here for completeness, just incase */
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/* the hardware supports it *giggle* */
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/* This is not writable -- mark -- technically this should fault */
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/* WriteWord ( IO_MOUSE_BUTTONS, co->buttons );*/
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return 0;
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}
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case QUADMOUSE_SETBOUNDS:
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{
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register struct mouse_boundingbox *bo = (void *)data;
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sc->boundx = bo->x; sc->boundy = bo->y;
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sc->bounda = bo->a; sc->boundb = bo->b;
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return 0;
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}
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case QUADMOUSE_SETORIGIN:
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{
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register struct mouse_origin *oo = (void *)data;
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/* int oldx, oldy;*/
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/* Need to fix up! */
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sc->origx = oo->x;
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sc->origy = oo->y;
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return 0;
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}
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case QUADMOUSE_GETSTATE:
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{
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register struct mouse_state *co = (void *)data;
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FMT_START
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co->x = x;
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co->y = y;
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co->buttons = b ^ 0x70;
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FMT_END
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return 0;
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}
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case QUADMOUSE_GETBOUNDS:
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{
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register struct mouse_boundingbox *bo = (void *)data;
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bo->x = sc->boundx; bo->y = sc->boundy;
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bo->a = sc->bounda; bo->b = sc->boundb;
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return 0;
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}
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case QUADMOUSE_GETORIGIN:
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{
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register struct mouse_origin *oo = (void *)data;
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oo->x = sc->origx;
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oo->y = sc->origy;
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return 0;
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}
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}
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return (EINVAL);
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}
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int
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quadmouseintr(sc)
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struct quadmouse_softc *sc;
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{
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int s;
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struct mousebufrec buffer;
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int dosignal=0;
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FMT_START
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b &= 0x70;
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b >>= 4;
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if (x != sc->lastx || y != sc->lasty || b != sc->lastb) {
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/* Mouse state changed */
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buffer.status = b | ( b ^ sc->lastb) << 3 | (((x==sc->lastx) && (y==sc->lasty))?0:0x40);
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buffer.x = x;
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buffer.y = y;
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microtime(&buffer.event_time);
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if(sc->buffer.c_cc==0)
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dosignal=1;
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s=spltty();
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(void) b_to_q((char *)&buffer, sizeof(buffer), &sc->buffer);
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(void)splx(s);
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selwakeup(&sc->sc_rsel);
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if(sc->sc_state & QMOUSE_ASLEEP) {
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sc->sc_state &= ~QMOUSE_ASLEEP;
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wakeup((caddr_t)sc);
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}
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if(dosignal)
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psignal(sc->proc, SIGIO);
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sc->lastx = x;
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sc->lasty = y;
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sc->lastb = b;
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}
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FMT_END
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return(0);
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}
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int
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quadmouseselect(dev, rw, p)
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dev_t dev;
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int rw;
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struct proc *p;
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{
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int unit = minor(dev);
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struct quadmouse_softc *sc = quadmouse_cd.cd_devs[unit];
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int s;
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if(rw == FWRITE)
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return 0;
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s=spltty();
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if(sc->buffer.c_cc > 0) {
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selrecord(p, &sc->sc_rsel);
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(void)splx(s);
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return 0;
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}
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(void)splx(s);
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return 1;
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}
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/* End of quadmouse.c */
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