NetBSD/sys/arch/x68k/dev/kbd.c

349 lines
7.5 KiB
C

/* $NetBSD: kbd.c,v 1.5 1996/11/23 09:44:55 oki Exp $ */
/*
* Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
* 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 University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#include "ite.h"
#include "bell.h"
#if NITE > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <machine/cpu.h>
#include <x68k/dev/itevar.h>
#include <x68k/x68k/iodevice.h>
/* for sun-like event mode, if you go thru /dev/kbd. */
#include <x68k/dev/event_var.h>
#include <machine/kbio.h>
#include <machine/kbd.h>
#include <machine/vuid_event.h>
struct kbd_softc {
int k_event_mode; /* if true, collect events, else pass to ite */
struct evvar k_events; /* event queue state */
} kbd_softc;
/*
* Called from main() during pseudo-device setup. If this keyboard is
* the console, this is our chance to open the underlying serial port and
* send a RESET, so that we can find out what kind of keyboard it is.
*/
void
kbdattach(kbd)
int kbd;
{
}
/* definitions for x68k keyboard encoding. */
#define KEY_CODE(c) ((c) & 0x7f)
#define KEY_UP(c) ((c) & 0x80)
void
kbdenable()
{
int s = spltty();
sysport.keyctrl = 8; /* send character from keyboard enable */
mfp.iera &= (~0x11); /* MPSC RBF, Timer-B interrupt disable */
mfp.tbcr = MFP_TIMERB_RESET | MFP_TIMERB_STOP; /* Timer-B stop */
mfp.tbdr = 13; /* Timer-B 38400 Hz clock (interrupt 76800Hz) */
mfp.tbcr = 1; /* Timer-B deray mode, prescale 1/4 */
mfp.ucr = MFP_UCR_CLKX16 | MFP_UCR_RW_8 | MFP_UCR_ONESB;
mfp.rsr = MFP_RSR_RE; /* USART receive enable */
mfp.iera |= 0x11; /* MPSC RBF, Timer-B interrupt enable */
while(!(mfp.tsr & MFP_TSR_BE)) ;
mfp.udr = 0x49; /* send character from keyboard enable */
kbdled = 0; /* all keyboard LED turn off. */
kbd_setLED();
if (!(sysport.keyctrl & 8))
printf("WARNING: no connected keyboard\n");
kbd_softc.k_event_mode = 0;
kbd_softc.k_events.ev_io = 0;
splx(s);
}
int
kbdopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
if (kbd_softc.k_events.ev_io)
return (EBUSY);
kbd_softc.k_events.ev_io = p;
ev_init(&kbd_softc.k_events);
return (0);
}
int
kbdclose(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
/* Turn off event mode, dump the queue */
kbd_softc.k_event_mode = 0;
ev_fini(&kbd_softc.k_events);
kbd_softc.k_events.ev_io = NULL;
return (0);
}
int
kbdread(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
return ev_read(&kbd_softc.k_events, uio, flags);
}
/* this routine should not exist, but is convenient to write here for now */
int
kbdwrite(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
return EOPNOTSUPP;
}
int
kbdioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
register struct kbd_softc *k = &kbd_softc;
int cmd_data;
switch (cmd) {
case KIOCTRANS:
if (*(int *)data == TR_UNTRANS_EVENT)
return (0);
break;
case KIOCGTRANS:
/*
* Get translation mode
*/
*(int *)data = TR_UNTRANS_EVENT;
return (0);
case KIOCSDIRECT:
k->k_event_mode = *(int *)data;
return (0);
case KIOCCMD:
cmd_data = *(int *)data;
return kbd_send_command(cmd_data);
case KIOCSLED:
kbdled = *(char *)data;
kbd_setLED();
return (0);
case KIOCGLED:
*(char *)data = kbdled;
return (0);
case KIOCSBELL:
#if NBELL > 0
/* XXX - so tricky! */
return opm_bell_setup((struct kbiocbell *)data);
#else
return (0); /* allways success */
#endif
case FIONBIO: /* we will remove this someday (soon???) */
return (0);
case FIOASYNC:
k->k_events.ev_async = *(int *)data != 0;
return (0);
case TIOCSPGRP:
if (*(int *)data != k->k_events.ev_io->p_pgid)
return (EPERM);
return (0);
default:
return (ENOTTY);
}
/*
* We identified the ioctl, but we do not handle it.
*/
return (EOPNOTSUPP); /* misuse, but what the heck */
}
int
kbdpoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
return ev_poll (&kbd_softc.k_events, events, p);
}
#define KBDBUFMASK 63
#define KBDBUFSIZ 64
static u_char kbdbuf[KBDBUFSIZ];
static int kbdputoff = 0;
static int kbdgetoff = 0;
void
kbdintr()
{
u_char c, in;
struct kbd_softc *k = &kbd_softc;
struct firm_event *fe;
int put;
c = in = mfp.udr;
/* if not in event mode, deliver straight to ite to process key stroke */
if (! k->k_event_mode) {
kbdbuf[kbdputoff++ & KBDBUFMASK] = c;
setsoftkbd();
return;
}
/* Keyboard is generating events. Turn this keystroke into an
event and put it in the queue. If the queue is full, the
keystroke is lost (sorry!). */
put = k->k_events.ev_put;
fe = &k->k_events.ev_q[put];
put = (put + 1) % EV_QSIZE;
if (put == k->k_events.ev_get) {
log(LOG_WARNING, "keyboard event queue overflow\n"); /* ??? */
return;
}
fe->id = KEY_CODE(c);
fe->value = KEY_UP(c) ? VKEY_UP : VKEY_DOWN;
fe->time = time;
k->k_events.ev_put = put;
EV_WAKEUP(&k->k_events);
}
void
kbdsoftint()
{
int s = splhigh();
while(kbdgetoff < kbdputoff)
ite_filter(kbdbuf[kbdgetoff++ & KBDBUFMASK], ITEFILT_TTY);
kbdgetoff = kbdputoff = 0;
splx(s);
}
void
kbd_bell(mode)
int mode;
{
#if NBELL > 0
if (mode)
opm_bell_on();
else
opm_bell_off();
#endif
}
int
kbdgetcn()
{
int s = spltty();
u_char ints, c, in;
ints = mfp.iera;
mfp.iera &= 0xef;
mfp.rsr |= 1;
while (!(mfp.rsr & MFP_RSR_BF))
asm("nop");
in = c = mfp.udr;
mfp.iera = ints;
splx (s);
return c;
}
void
kbd_setLED()
{
while(!(mfp.tsr & MFP_TSR_BE)) ;
mfp.udr = ~kbdled | 0x80;
}
int
kbd_send_command(cmd)
int cmd;
{
switch (cmd) {
case KBD_CMD_RESET:
/* XXX */
return 0;
case KBD_CMD_BELL:
kbd_bell(1);
return 0;
case KBD_CMD_NOBELL:
kbd_bell(0);
return 0;
default:
return ENOTTY;
}
}
#endif