471 lines
10 KiB
C
471 lines
10 KiB
C
/* $NetBSD: qms.c,v 1.21 1999/02/02 04:02:26 mark 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 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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* 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 <sys/poll.h>
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#include <machine/bus.h>
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#include <machine/conf.h>
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#include <machine/mouse.h>
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#include <arm32/dev/qmsvar.h>
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#define MOUSE_IOC_ACK
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#define QMOUSE_BSIZE 12*64
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#ifdef MOUSE_IOC_ACK
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static void qmsputbuffer __P((struct qms_softc *sc, struct mousebufrec *buf));
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#endif
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extern struct cfdriver qms_cd;
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/* qms device structure */
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/* Offsets of hardware registers */
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#define QMS_MOUSEX 0 /* 16 bit X register */
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#define QMS_MOUSEY 1 /* 16 bit Y register */
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#define QMS_BUTTONS 0 /* mouse buttons register */
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/*
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* generic attach routine. This does the generic part of the driver
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* attachment and is called from the bus specific attach routine.
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*/
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void
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qmsattach(sc)
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struct qms_softc *sc;
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{
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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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/* Set the mouse X & Y registers to a known state */
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, sc->origx);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, sc->origx);
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}
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int
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qmsopen(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 qms_softc *sc;
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int unit = minor(dev);
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/* validate the unit and softc */
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if (unit >= qms_cd.cd_ndevs)
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return(ENXIO);
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sc = qms_cd.cd_devs[unit];
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if (!sc) return(ENXIO);
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/* check if we are already open */
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if (sc->sc_state & QMOUSE_OPEN) return(EBUSY);
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/* update softc */
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sc->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->sc_buffer, QMOUSE_BSIZE, 0) == -1)
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return(ENOMEM);
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/* set mode and state */
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sc->sc_mode = MOUSEMODE_ABS;
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sc->sc_state |= QMOUSE_OPEN;
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/* enable interrupts */
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sc->sc_intenable(sc, 1);
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return(0);
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}
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int
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qmsclose(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 qms_softc *sc = qms_cd.cd_devs[unit];
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/* disable interrupts */
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sc->sc_intenable(sc, 0);
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/* clean up */
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sc->sc_proc = NULL;
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sc->sc_state = 0;
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clfree(&sc->sc_buffer);
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return(0);
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}
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int
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qmsread(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 qms_softc *sc = qms_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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error = 0;
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s = spltty();
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while (sc->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, "qmsread", 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->sc_buffer.c_cc > 0 && uio->uio_resid > 0) {
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length = min(sc->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->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 \
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int x = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX) & 0xffff; \
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int y = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY) & 0xffff; \
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int b = bus_space_read_1(sc->sc_iot, sc->sc_butioh, QMS_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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if (x > (sc->bounda)) x = sc->bounda; \
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, x + sc->origx); \
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if (y < (sc->boundy)) y = sc->boundy; \
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if (y > (sc->boundb)) y = sc->boundb; \
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_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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qmsioctl(dev, cmd, data, flag, p)
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dev_t dev;
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u_long 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 qms_softc *sc = qms_cd.cd_devs[minor(dev)];
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switch (cmd) {
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case MOUSEIOC_WRITEX:
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX,
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*(int *)data + sc->origx);
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return 0;
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case MOUSEIOC_WRITEY:
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY,
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*(int *)data + sc->origy);
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return 0;
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case MOUSEIOC_SETSTATE:
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{
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struct mouse_state *co = (void *)data;
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, co->x);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY, co->y);
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return 0;
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}
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case MOUSEIOC_SETBOUNDS:
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{
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struct mouse_boundingbox *bo = (void *)data;
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struct mousebufrec buffer;
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#ifdef MOUSE_IOC_ACK
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int s;
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s = spltty();
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#endif
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sc->boundx = bo->x;
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sc->boundy = bo->y;
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sc->bounda = bo->a;
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sc->boundb = bo->b;
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buffer.status = IOC_ACK;
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buffer.x = sc->origx;
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buffer.y = sc->origy;
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#ifdef MOUSE_IOC_ACK
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if (sc->sc_buffer.c_cc > 0)
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printf("%s: setting bounding with non empty buffer (%d)\n",
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sc->sc_device.dv_xname, sc->sc_buffer.c_cc);
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qmsputbuffer(sc, &buffer);
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(void)splx(s);
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#endif
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return 0;
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}
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case MOUSEIOC_SETMODE:
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{
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struct mousebufrec buffer;
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#ifdef MOUSE_IOC_ACK
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int s;
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s = spltty();
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#endif
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sc->sc_mode = *(int *)data;
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buffer.status = IOC_ACK;
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buffer.x = sc->origx;
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buffer.y = sc->origy;
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#ifdef MOUSE_IOC_ACK
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if (sc->sc_buffer.c_cc > 0)
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printf("%s: setting mode with non empty buffer (%d)\n",
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sc->sc_device.dv_xname, sc->sc_buffer.c_cc);
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qmsputbuffer(sc, &buffer);
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(void)splx(s);
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#endif
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return 0;
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}
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case MOUSEIOC_SETORIGIN:
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{
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struct mouse_origin *oo = (void *)data;
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struct mousebufrec buffer;
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#ifdef MOUSE_IOC_ACK
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int s;
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s = spltty();
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#endif
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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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buffer.status = IOC_ACK;
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buffer.x = sc->origx;
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buffer.y = sc->origy;
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#ifdef MOUSE_IOC_ACK
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if (sc->sc_buffer.c_cc > 0)
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printf("%s: setting origin with non empty buffer (%d)\n",
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sc->sc_device.dv_xname, sc->sc_buffer.c_cc);
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qmsputbuffer(sc, &buffer);
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(void)splx(s);
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#endif
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return 0;
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}
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case MOUSEIOC_GETSTATE:
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{
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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 MOUSEIOC_GETBOUNDS:
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{
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struct mouse_boundingbox *bo = (void *)data;
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bo->x = sc->boundx;
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bo->y = sc->boundy;
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bo->a = sc->bounda;
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bo->b = sc->boundb;
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return 0;
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}
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case MOUSEIOC_GETORIGIN:
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{
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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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qmsintr(arg)
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void *arg;
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{
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struct qms_softc *sc = arg;
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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:MOVEMENT);
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if(sc->sc_mode == MOUSEMODE_REL) {
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sc->origx = sc->origy = 0;
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, sc->origx);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY, sc->origy);
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}
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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->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->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->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); /* Pass interrupt on down the chain */
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}
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int
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qmspoll(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 qms_softc *sc = qms_cd.cd_devs[minor(dev)];
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int revents = 0;
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int s = spltty();
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if (events & (POLLIN | POLLRDNORM)) {
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if (sc->sc_buffer.c_cc > 0)
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revents |= events & (POLLIN | POLLRDNORM);
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else
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selrecord(p, &sc->sc_rsel);
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}
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(void)splx(s);
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return (revents);
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}
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#ifdef MOUSE_IOC_ACK
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static void
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qmsputbuffer(sc, buffer)
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struct qms_softc *sc;
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struct mousebufrec *buffer;
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{
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int s;
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int dosignal = 0;
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/* Time stamp the buffer */
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microtime(&buffer->event_time);
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if (sc->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->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->sc_proc, SIGIO);
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}
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#endif
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/* End of qms.c */
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