NetBSD/sys/arch/arm32/dev/qms.c

471 lines
10 KiB
C

/* $NetBSD: qms.c,v 1.18 1998/02/22 00:24:12 mark Exp $ */
/*
* Copyright (c) Scott Stevens 1995 All rights reserved
* Copyright (c) Melvin Tang-Richardson 1995 All rights reserved
* Copyright (c) Mark Brinicombe 1995 All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the RiscBSD team.
* 4. 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.
*/
/*
* Quadrature mouse driver
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/kernel.h>
#include <sys/types.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/time.h>
#include <sys/errno.h>
#include <dev/cons.h>
#include <sys/fcntl.h>
#include <sys/signalvar.h>
#include <sys/vnode.h>
#include <sys/time.h>
#include <sys/poll.h>
#include <machine/bus.h>
#include <machine/conf.h>
#include <machine/mouse.h>
#include <arm32/dev/qmsvar.h>
#define QMOUSE_BSIZE 12*64
#ifdef MOUSE_IOC_ACK
static void qmsputbuffer __P((struct qms_softc *sc, struct mousebufrec *buf));
#endif
extern struct cfdriver qms_cd;
/* qms device structure */
/* Offsets of hardware registers */
#define QMS_MOUSEX 0 /* 16 bit X register */
#define QMS_MOUSEY 1 /* 16 bit Y register */
#define QMS_BUTTONS 0 /* mouse buttons register */
/*
* generic attach routine. This does the generic part of the driver
* attachment and is called from the bus specific attach routine.
*/
void
qmsattach(sc)
struct qms_softc *sc;
{
/* Set up origin and multipliers */
sc->origx = 0;
sc->origy = 0;
sc->xmult = 2;
sc->ymult = 2;
/* Set up bounding box */
sc->boundx = -4095;
sc->boundy = -4095;
sc->bounda = 4096;
sc->boundb = 4096;
sc->sc_state = 0;
/* Set the mouse X & Y registers to a known state */
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, sc->origx);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, sc->origx);
}
int
qmsopen(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
struct qms_softc *sc;
int unit = minor(dev);
/* validate the unit and softc */
if (unit >= qms_cd.cd_ndevs)
return(ENXIO);
sc = qms_cd.cd_devs[unit];
if (!sc) return(ENXIO);
/* check if we are already open */
if (sc->sc_state & QMOUSE_OPEN) return(EBUSY);
/* update softc */
sc->sc_proc = p;
sc->lastx = -1;
sc->lasty = -1;
sc->lastb = -1;
/* initialise buffer */
if (clalloc(&sc->sc_buffer, QMOUSE_BSIZE, 0) == -1)
return(ENOMEM);
/* set mode and state */
sc->sc_mode = MOUSEMODE_ABS;
sc->sc_state |= QMOUSE_OPEN;
/* enable interrupts */
sc->sc_intenable(sc, 1);
return(0);
}
int
qmsclose(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
int unit = minor(dev);
struct qms_softc *sc = qms_cd.cd_devs[unit];
/* disable interrupts */
sc->sc_intenable(sc, 0);
/* clean up */
sc->sc_proc = NULL;
sc->sc_state = 0;
clfree(&sc->sc_buffer);
return(0);
}
int
qmsread(dev, uio, flag)
dev_t dev;
struct uio *uio;
int flag;
{
int unit = minor(dev);
struct qms_softc *sc = qms_cd.cd_devs[unit];
int error;
int s;
int length;
u_char buffer[128];
error = 0;
s = spltty();
while (sc->sc_buffer.c_cc == 0) {
if (flag & IO_NDELAY) {
(void)splx(s);
return(EWOULDBLOCK);
}
sc->sc_state |= QMOUSE_ASLEEP;
if ((error = tsleep((caddr_t)sc, PZERO | PCATCH, "qmsread", 0))) {
sc->sc_state &= ~QMOUSE_ASLEEP;
(void)splx(s);
return(error);
}
}
while (sc->sc_buffer.c_cc > 0 && uio->uio_resid > 0) {
length = min(sc->sc_buffer.c_cc, uio->uio_resid);
if(length>sizeof(buffer))
length=sizeof(buffer);
(void)q_to_b(&sc->sc_buffer, buffer, length);
if ((error = (uiomove(buffer, length, uio))))
break;
}
(void)splx(s);
return(error);
}
#define FMT_START \
int x = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX) & 0xffff; \
int y = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY) & 0xffff; \
int b = bus_space_read_1(sc->sc_iot, sc->sc_butioh, QMS_BUTTONS) & 0x70;\
if (x & 0x8000) x |= 0xffff0000; \
if (y & 0x8000) y |= 0xffff0000; \
x = (x - sc->origx); \
y = (y - sc->origy); \
if (x < (sc->boundx)) x = sc->boundx; \
if (x > (sc->bounda)) x = sc->bounda; \
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, x + sc->origx); \
if (y < (sc->boundy)) y = sc->boundy; \
if (y > (sc->boundb)) y = sc->boundb; \
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY, y + sc->origy); \
x = x * sc->xmult; \
y = y * sc->ymult;
#define FMT_END
int
qmsioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct qms_softc *sc = qms_cd.cd_devs[minor(dev)];
switch (cmd) {
case MOUSEIOC_WRITEX:
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX,
*(int *)data + sc->origx);
return 0;
case MOUSEIOC_WRITEY:
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY,
*(int *)data + sc->origy);
return 0;
case MOUSEIOC_SETSTATE:
{
register struct mouse_state *co = (void *)data;
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, co->x);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY, co->y);
return 0;
}
case MOUSEIOC_SETBOUNDS:
{
register struct mouse_boundingbox *bo = (void *)data;
struct mousebufrec buffer;
#ifdef MOUSE_IOC_ACK
int s;
s = spltty();
#endif
sc->boundx = bo->x;
sc->boundy = bo->y;
sc->bounda = bo->a;
sc->boundb = bo->b;
buffer.status = IOC_ACK;
buffer.x = sc->origx;
buffer.y = sc->origy;
#ifdef MOUSE_IOC_ACK
if (sc->sc_buffer.c_cc > 0)
printf("%s: setting bounding with non empty buffer (%d)\n",
sc->sc_device.dv_xname, sc->sc_buffer.c_cc);
qmsputbuffer(sc, &buffer);
(void)splx(s);
#endif
return 0;
}
case MOUSEIOC_SETMODE:
{
struct mousebufrec buffer;
#ifdef MOUSE_IOC_ACK
int s;
s = spltty();
#endif
sc->sc_mode = *(int *)data;
buffer.status = IOC_ACK;
buffer.x = sc->origx;
buffer.y = sc->origy;
#ifdef MOUSE_IOC_ACK
if (sc->sc_buffer.c_cc > 0)
printf("%s: setting mode with non empty buffer (%d)\n",
sc->sc_device.dv_xname, sc->sc_buffer.c_cc);
qmsputbuffer(sc, &buffer);
(void)splx(s);
#endif
return 0;
}
case MOUSEIOC_SETORIGIN:
{
register struct mouse_origin *oo = (void *)data;
struct mousebufrec buffer;
#ifdef MOUSE_IOC_ACK
int s;
s = spltty();
#endif
/* Need to fix up! */
sc->origx = oo->x;
sc->origy = oo->y;
buffer.status = IOC_ACK;
buffer.x = sc->origx;
buffer.y = sc->origy;
#ifdef MOUSE_IOC_ACK
if (sc->sc_buffer.c_cc > 0)
printf("%s: setting origin with non empty buffer (%d)\n",
sc->sc_device.dv_xname, sc->sc_buffer.c_cc);
qmsputbuffer(sc, &buffer);
(void)splx(s);
#endif
return 0;
}
case MOUSEIOC_GETSTATE:
{
register struct mouse_state *co = (void *)data;
FMT_START
co->x = x;
co->y = y;
co->buttons = b ^ 0x70;
FMT_END
return 0;
}
case MOUSEIOC_GETBOUNDS:
{
register struct mouse_boundingbox *bo = (void *)data;
bo->x = sc->boundx;
bo->y = sc->boundy;
bo->a = sc->bounda;
bo->b = sc->boundb;
return 0;
}
case MOUSEIOC_GETORIGIN:
{
register struct mouse_origin *oo = (void *)data;
oo->x = sc->origx;
oo->y = sc->origy;
return 0;
}
}
return (EINVAL);
}
int
qmsintr(arg)
void *arg;
{
struct qms_softc *sc = arg;
int s;
struct mousebufrec buffer;
int dosignal=0;
FMT_START
b &= 0x70;
b >>= 4;
if (x != sc->lastx || y != sc->lasty || b != sc->lastb) {
/* Mouse state changed */
buffer.status = b | ( b ^ sc->lastb) << 3 | (((x==sc->lastx) && (y==sc->lasty))?0:MOVEMENT);
if(sc->sc_mode == MOUSEMODE_REL) {
sc->origx = sc->origy = 0;
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX, sc->origx);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY, sc->origy);
}
buffer.x = x;
buffer.y = y;
microtime(&buffer.event_time);
if (sc->sc_buffer.c_cc == 0)
dosignal = 1;
s = spltty();
(void)b_to_q((char *)&buffer, sizeof(buffer), &sc->sc_buffer);
(void)splx(s);
selwakeup(&sc->sc_rsel);
if (sc->sc_state & QMOUSE_ASLEEP) {
sc->sc_state &= ~QMOUSE_ASLEEP;
wakeup((caddr_t)sc);
}
if (dosignal)
psignal(sc->sc_proc, SIGIO);
sc->lastx = x;
sc->lasty = y;
sc->lastb = b;
}
FMT_END
return(0); /* Pass interrupt on down the chain */
}
int
qmspoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
struct qms_softc *sc = qms_cd.cd_devs[minor(dev)];
int revents = 0;
int s = spltty();
if (events & (POLLIN | POLLRDNORM))
if (sc->sc_buffer.c_cc > 0)
revents |= events & (POLLIN | POLLRDNORM);
else
selrecord(p, &sc->sc_rsel);
(void)splx(s);
return (revents);
}
#ifdef MOUSE_IOC_ACK
static void
qmsputbuffer(sc, buffer)
struct qms_softc *sc;
struct mousebufrec *buffer;
{
int s;
int dosignal = 0;
/* Time stamp the buffer */
microtime(&buffer->event_time);
if (sc->sc_buffer.c_cc == 0)
dosignal=1;
s = spltty();
(void)b_to_q((char *)buffer, sizeof(*buffer), &sc->sc_buffer);
(void)splx(s);
selwakeup(&sc->sc_rsel);
if (sc->sc_state & QMOUSE_ASLEEP) {
sc->sc_state &= ~QMOUSE_ASLEEP;
wakeup((caddr_t)sc);
}
if (dosignal)
psignal(sc->sc_proc, SIGIO);
}
#endif
/* End of qms.c */