/* $NetBSD: ms.c,v 1.26 2014/07/25 08:10:32 dholland Exp $ */
/*
* Copyright (c) 1995 Leo Weppelman.
* All rights reserved.
*
* based on:
*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)ms.c 8.1 (Berkeley) 6/11/93
*
* Header: ms.c,v 1.5 92/11/26 01:28:47 torek Exp (LBL)
*/
/*
* Mouse driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ms.c,v 1.26 2014/07/25 08:10:32 dholland Exp $");
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <sys/tty.h>
#include <sys/signalvar.h>
#include <machine/msioctl.h>
#include <atari/dev/event_var.h>
#include <atari/dev/vuid_event.h>
#include <atari/dev/kbdvar.h>
#include <atari/dev/msvar.h>
#include "mouse.h"
#if NMOUSE > 0
/* there's really no more physical ports on an atari. */
#if NMOUSE > 1
#undef NMOUSE
#define NMOUSE 1
#endif
typedef void (*FPV)(void *);
static struct ms_softc ms_softc[NMOUSE];
dev_type_open(msopen);
dev_type_close(msclose);
dev_type_read(msread);
dev_type_ioctl(msioctl);
dev_type_poll(mspoll);
dev_type_kqfilter(mskqfilter);
const struct cdevsw ms_cdevsw = {
.d_open = msopen,
.d_close = msclose,
.d_read = msread,
.d_write = nowrite,
.d_ioctl = msioctl,
.d_stop = nostop,
.d_tty = notty,
.d_poll = mspoll,
.d_mmap = nommap,
.d_kqfilter = mskqfilter,
.d_discard = nodiscard,
.d_flag = 0
};
static void ms_3b_delay(struct ms_softc *);
int
mouseattach(int cnt)
{
printf("1 mouse configured\n");
ms_softc[0].ms_emul3b = 1;
callout_init(&ms_softc[0].ms_delay_ch, 0);
return(NMOUSE);
}
static void
ms_3b_delay(struct ms_softc *ms)
{
REL_MOUSE rel_ms;
rel_ms.id = TIMEOUT_ID;
rel_ms.dx = rel_ms.dy = 0;
mouse_soft(&rel_ms, sizeof(rel_ms), KBD_TIMEO_PKG);
}
/*
* Note that we are called from the keyboard software interrupt!
*/
void
mouse_soft(REL_MOUSE *rel_ms, int size, int type)
{
struct ms_softc *ms = &ms_softc[0];
struct firm_event *fe, *fe2;
REL_MOUSE fake_mouse;
int get, put;
int sps;
u_char mbut, bmask;
int flush_buttons;
if (ms->ms_events.ev_io == NULL)
return;
switch (type) {
case KBD_JOY1_PKG:
/*
* Ignore if in emulation mode
*/
if (ms->ms_emul3b)
return;
/*
* There are some mice that have their middle button
* wired to the 'up' bit of joystick 1....
* Simulate a mouse packet with dx = dy = 0, the middle
* button state set by UP and the other buttons unchanged.
* Flush all button changes.
*/
flush_buttons = 1;
fake_mouse.id = (rel_ms->dx & 1 ? 4 : 0) | (ms->ms_buttons & 3);
fake_mouse.dx = fake_mouse.dy = 0;
rel_ms = &fake_mouse;
break;
case KBD_TIMEO_PKG:
/*
* Timeout package. No button changes and no movement.
* Flush all button changes.
*/
flush_buttons = 1;
fake_mouse.id = ms->ms_buttons;
fake_mouse.dx = fake_mouse.dy = 0;
rel_ms = &fake_mouse;
break;
case KBD_RMS_PKG:
/*
* Normal mouse package. Always copy the middle button
* status. The emulation code decides if button changes
* must be flushed.
*/
rel_ms->id = (ms->ms_buttons & 4) | (rel_ms->id & 3);
flush_buttons = (ms->ms_emul3b) ? 0 : 1;
break;
default:
return;
}
sps = splev();
get = ms->ms_events.ev_get;
put = ms->ms_events.ev_put;
fe = &ms->ms_events.ev_q[put];
if ((type != KBD_TIMEO_PKG) && ms->ms_emul3b && ms->ms_bq_idx)
callout_stop(&ms->ms_delay_ch);
/*
* Button states are encoded in the lower 3 bits of 'id'
*/
if (!(mbut = (rel_ms->id ^ ms->ms_buttons)) && (put != get)) {
/*
* Compact dx/dy messages. Always generate an event when
* a button is pressed or the event queue is empty.
*/
ms->ms_dx += rel_ms->dx;
ms->ms_dy += rel_ms->dy;
goto out;
}
rel_ms->dx += ms->ms_dx;
rel_ms->dy += ms->ms_dy;
ms->ms_dx = ms->ms_dy = 0;
/*
* Output location events _before_ button events ie. make sure
* the button is pressed at the correct location.
*/
if (rel_ms->dx) {
if ((++put) % EV_QSIZE == get) {
put--;
goto out;
}
fe->id = LOC_X_DELTA;
fe->value = rel_ms->dx;
firm_gettime(fe);
if (put >= EV_QSIZE) {
put = 0;
fe = &ms->ms_events.ev_q[0];
}
else fe++;
}
if (rel_ms->dy) {
if ((++put) % EV_QSIZE == get) {
put--;
goto out;
}
fe->id = LOC_Y_DELTA;
fe->value = rel_ms->dy;
firm_gettime(fe);
if (put >= EV_QSIZE) {
put = 0;
fe = &ms->ms_events.ev_q[0];
}
else fe++;
}
if (mbut && (type != KBD_TIMEO_PKG)) {
for (bmask = 1; bmask < 0x08; bmask <<= 1) {
if (!(mbut & bmask))
continue;
fe2 = &ms->ms_bq[ms->ms_bq_idx++];
if (bmask == 1)
fe2->id = MS_RIGHT;
else if (bmask == 2)
fe2->id = MS_LEFT;
else fe2->id = MS_MIDDLE;
fe2->value = rel_ms->id & bmask ? VKEY_DOWN : VKEY_UP;
firm_gettime(fe2);
}
}
/*
* Handle 3rd button emulation.
*/
if (ms->ms_emul3b && ms->ms_bq_idx && (type != KBD_TIMEO_PKG)) {
/*
* If the middle button is pressed, any change to
* one of the other buttons releases all.
*/
if ((ms->ms_buttons & 4) && (mbut & 3)) {
ms->ms_bq[0].id = MS_MIDDLE;
ms->ms_bq_idx = 1;
rel_ms->id = 0;
flush_buttons = 1;
goto out;
}
if (ms->ms_bq_idx == 2) {
if (ms->ms_bq[0].value == ms->ms_bq[1].value) {
/* Must be 2 button presses! */
ms->ms_bq[0].id = MS_MIDDLE;
ms->ms_bq_idx = 1;
rel_ms->id = 7;
}
}
else if (ms->ms_bq[0].value == VKEY_DOWN) {
callout_reset(&ms->ms_delay_ch, 10,
(FPV)ms_3b_delay, (void *)ms);
goto out;
}
flush_buttons = 1;
}
out:
if (flush_buttons) {
int i;
for (i = 0; i < ms->ms_bq_idx; i++) {
if ((++put) % EV_QSIZE == get) {
ms->ms_bq_idx = 0;
put--;
goto out;
}
*fe = ms->ms_bq[i];
if (put >= EV_QSIZE) {
put = 0;
fe = &ms->ms_events.ev_q[0];
}
else fe++;
}
ms->ms_bq_idx = 0;
}
ms->ms_events.ev_put = put;
ms->ms_buttons = rel_ms->id;
splx(sps);
EV_WAKEUP(&ms->ms_events);
}
int
msopen(dev_t dev, int flags, int mode, struct lwp *l)
{
u_char report_ms_joy[] = { 0x14, 0x08 };
struct ms_softc *ms;
int unit;
unit = minor(dev);
ms = &ms_softc[unit];
if (unit >= NMOUSE)
return(EXDEV);
if (ms->ms_events.ev_io)
return(EBUSY);
ms->ms_events.ev_io = l->l_proc;
ms->ms_dx = ms->ms_dy = 0;
ms->ms_buttons = 0;
ms->ms_bq[0].id = ms->ms_bq[1].id = 0;
ms->ms_bq_idx = 0;
ev_init(&ms->ms_events); /* may cause sleep */
/*
* Enable mouse reporting.
*/
kbd_write(report_ms_joy, sizeof(report_ms_joy));
return(0);
}
int
msclose(dev_t dev, int flags, int mode, struct lwp *l)
{
u_char disable_ms_joy[] = { 0x12, 0x1a };
int unit;
struct ms_softc *ms;
unit = minor (dev);
ms = &ms_softc[unit];
/*
* Turn off mouse interrogation.
*/
kbd_write(disable_ms_joy, sizeof(disable_ms_joy));
ev_fini(&ms->ms_events);
ms->ms_events.ev_io = NULL;
return(0);
}
int
msread(dev_t dev, struct uio *uio, int flags)
{
struct ms_softc *ms;
ms = &ms_softc[minor(dev)];
return(ev_read(&ms->ms_events, uio, flags));
}
int
msioctl(dev_t dev, u_long cmd, register void * data, int flag, struct lwp *l)
{
struct ms_softc *ms;
int unit;
unit = minor(dev);
ms = &ms_softc[unit];
switch (cmd) {
case MIOCS3B_EMUL:
ms->ms_emul3b = (*(int *)data != 0) ? 1 : 0;
return (0);
case MIOCG3B_EMUL:
*(int *)data = ms->ms_emul3b;
return (0);
case FIONBIO: /* we will remove this someday (soon???) */
return(0);
case FIOASYNC:
ms->ms_events.ev_async = *(int *)data != 0;
return(0);
case FIOSETOWN:
if (-*(int *)data != ms->ms_events.ev_io->p_pgid
&& *(int *)data != ms->ms_events.ev_io->p_pid)
return(EPERM);
return(0);
case TIOCSPGRP:
if (*(int *)data != ms->ms_events.ev_io->p_pgid)
return(EPERM);
return(0);
case VUIDGFORMAT: /* we only do firm_events */
*(int *)data = VUID_FIRM_EVENT;
return(0);
case VUIDSFORMAT:
if (*(int *)data != VUID_FIRM_EVENT)
return(EINVAL);
return(0);
}
return(ENOTTY);
}
int
mspoll(dev_t dev, int events, struct lwp *l)
{
struct ms_softc *ms;
ms = &ms_softc[minor(dev)];
return(ev_poll(&ms->ms_events, events, l));
}
int
mskqfilter(dev_t dev, struct knote *kn)
{
struct ms_softc *ms;
ms = &ms_softc[minor(dev)];
return (ev_kqfilter(&ms->ms_events, kn));
}
#endif /* NMOUSE > 0 */