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

441 lines
9.7 KiB
C

/* $NetBSD: qms.c,v 1.5 1996/03/28 21:56:40 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 <arm32/mainbus/mainbus.h>
#include <machine/irqhandler.h>
#include <machine/katelib.h>
#include <machine/iomd.h>
#include <machine/mouse.h>
#include "quadmouse.h"
#define TIMER1_COUNT 40000 /* 50Hz */
#define QMOUSE_BSIZE 12*64
struct quadmouse_softc {
struct device sc_device;
irqhandler_t sc_ih;
int sc_iobase;
struct selinfo sc_rsel;
#define QMOUSE_OPEN 0x01
#define QMOUSE_ASLEEP 0x02
int sc_state;
int boundx, boundy, bounda, boundb; /* Bounding box. x,y is bottom left */
int origx, origy;
int xmult, ymult; /* Multipliers */
int lastx, lasty, lastb;
struct proc *proc;
struct clist buffer;
};
int quadmouseprobe __P((struct device *, void *, void *));
void quadmouseattach __P((struct device *, struct device *, void *));
int quadmouseopen __P((dev_t, int, int, struct proc *));
int quadmouseclose __P((dev_t, int, int, struct proc *));
int strncmp __P((const char *, const char *, size_t));
int quadmouseintr (struct quadmouse_softc *);
struct cfattach quadmouse_ca = {
sizeof(struct quadmouse_softc), quadmouseprobe, quadmouseattach
};
struct cfdriver quadmouse_cd = {
NULL, "quadmouse", DV_DULL
};
int
quadmouseprobe(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
/* struct mainbus_attach_args *mb = aux;*/
int id;
/* Make sure we have an IOMD we understand */
id = ReadByte(IOMD_ID0) | (ReadByte(IOMD_ID1) << 8);
/* So far I only know about this IOMD */
switch (id) {
case RPC600_IOMD_ID:
return(1);
break;
default:
printf("quadmouse: Unknown IOMD id=%04x", id);
break;
}
return(0);
}
void
quadmouseattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct quadmouse_softc *sc = (void *)self;
struct mainbus_attach_args *mb = aux;
sc->sc_iobase = mb->mb_iobase;
/* Check for a known IOMD chip */
sc->sc_ih.ih_func = quadmouseintr;
sc->sc_ih.ih_arg = sc;
sc->sc_ih.ih_level = IPL_TTY;
sc->sc_ih.ih_name = "T1 quadmouse";
/* 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;
WriteWord(IOMD_MOUSEX, sc->origx);
WriteWord(IOMD_MOUSEY, sc->origy);
printf("\n");
}
int
quadmouseopen(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
struct quadmouse_softc *sc;
int unit = minor(dev);
if (unit >= quadmouse_cd.cd_ndevs)
return(ENXIO);
sc = quadmouse_cd.cd_devs[unit];
if (!sc) return(ENXIO);
if (sc->sc_state & QMOUSE_OPEN) return(EBUSY);
sc->proc = p;
sc->lastx = -1;
sc->lasty = -1;
sc->lastb = -1;
/* initialise buffer */
if (clalloc(&sc->buffer, QMOUSE_BSIZE, 0) == -1)
return(ENOMEM);
sc->sc_state |= QMOUSE_OPEN;
WriteByte(IOMD_T1LOW, (TIMER1_COUNT >> 0) & 0xff);
WriteByte(IOMD_T1HIGH, (TIMER1_COUNT >> 8) & 0xff);
WriteByte(IOMD_T1GO, 0);
if (irq_claim(IRQ_TIMER1, &sc->sc_ih))
panic("Cannot claim TIMER1 IRQ for quadmouse%d\n", sc->sc_device.dv_unit);
return(0);
}
int
quadmouseclose(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
int unit = minor (dev);
struct quadmouse_softc *sc = quadmouse_cd.cd_devs[unit];
if (irq_release(IRQ_TIMER1, &sc->sc_ih) != 0)
panic("Cannot release IRA\n");
sc->proc = NULL;
sc->sc_state = 0;
clfree(&sc->buffer);
return(0);
}
int
quadmouseread(dev, uio, flag)
dev_t dev;
struct uio *uio;
int flag;
{
int unit = minor(dev);
struct quadmouse_softc *sc = quadmouse_cd.cd_devs[unit];
int error;
int s;
int length;
u_char buffer[128];
s=spltty();
while(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, "quadmouseread", 0))) {
sc->sc_state &= ~QMOUSE_ASLEEP;
(void)splx(s);
return(error);
}
}
while(sc->buffer.c_cc>0 && uio->uio_resid>0) {
length=min(sc->buffer.c_cc, uio->uio_resid);
if(length>sizeof(buffer))
length=sizeof(buffer);
(void) q_to_b(&sc->buffer, buffer, length);
if(error = (uiomove(buffer, length, uio)))
break;
}
(void)splx(s);
return(error);
}
#define FMT_START int x = ReadWord(IOMD_MOUSEX)&0xffff; \
int y = ReadWord(IOMD_MOUSEY)&0xffff; \
int b = ReadByte(IO_MOUSE_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; \
WriteWord(IOMD_MOUSEX, x + sc->origx); \
if (x>(sc->bounda)) x = sc->bounda; \
WriteWord(IOMD_MOUSEX, x + sc->origx); \
if (y<(sc->boundy)) y = sc->boundy; \
WriteWord(IOMD_MOUSEY, y + sc->origy); \
if (y>(sc->boundb)) y = sc->boundb; \
WriteWord(IOMD_MOUSEY, y + sc->origy); \
x=x*sc->xmult; \
y=y*sc->ymult;
#define FMT_END
int
quadmouseioctl(dev, cmd, data, flag, p)
dev_t dev;
int cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct quadmouse_softc *sc = quadmouse_cd.cd_devs[minor(dev)];
switch (cmd) {
case MOUSEIOC_WRITEX:
WriteWord(IOMD_MOUSEX, *(int *)data+sc->origx);
return 0;
case MOUSEIOC_WRITEY:
WriteWord(IOMD_MOUSEY, *(int *)data+sc->origy);
return 0;
case MOUSEIOC_SETSTATE:
{
register struct mouse_state *co = (void *)data;
WriteWord(IOMD_MOUSEX, co->x);
WriteWord(IOMD_MOUSEY, co->y);
/* Silly, but here for completeness, just incase */
/* the hardware supports it *giggle* */
/* This is not writable -- mark -- technically this should fault */
/* WriteWord ( IO_MOUSE_BUTTONS, co->buttons );*/
return 0;
}
case MOUSEIOC_SETBOUNDS:
{
register struct mouse_boundingbox *bo = (void *)data;
sc->boundx = bo->x; sc->boundy = bo->y;
sc->bounda = bo->a; sc->boundb = bo->b;
return 0;
}
case MOUSEIOC_SETORIGIN:
{
register struct mouse_origin *oo = (void *)data;
/* int oldx, oldy;*/
/* Need to fix up! */
sc->origx = oo->x;
sc->origy = oo->y;
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
quadmouseintr(sc)
struct quadmouse_softc *sc;
{
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))?0:0x40);
buffer.x = x;
buffer.y = y;
microtime(&buffer.event_time);
if(sc->buffer.c_cc==0)
dosignal=1;
s=spltty();
(void) b_to_q((char *)&buffer, sizeof(buffer), &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->proc, SIGIO);
sc->lastx = x;
sc->lasty = y;
sc->lastb = b;
}
FMT_END
return(0);
}
int
quadmouseselect(dev, rw, p)
dev_t dev;
int rw;
struct proc *p;
{
int unit = minor(dev);
struct quadmouse_softc *sc = quadmouse_cd.cd_devs[unit];
int s;
if(rw == FWRITE)
return 0;
s=spltty();
if(sc->buffer.c_cc > 0) {
selrecord(p, &sc->sc_rsel);
(void)splx(s);
return 0;
}
(void)splx(s);
return 1;
}
/* End of quadmouse.c */