/* $NetBSD: kbd.c,v 1.62 2024/09/08 09:36:48 rillig 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. 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.
*
* kbd.c
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kbd.c,v 1.62 2024/09/08 09:36:48 rillig Exp $");
#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/file.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/signalvar.h>
#include <sys/conf.h>
#include <dev/cons.h>
#include <machine/cpu.h>
#include <amiga/amiga/device.h>
#include <amiga/amiga/custom.h>
#ifdef DRACO
#include <m68k/asm_single.h>
#include <amiga/amiga/drcustom.h>
#endif
#include <amiga/amiga/cia.h>
#include <amiga/dev/itevar.h>
#include <amiga/dev/kbdreg.h>
#include <amiga/dev/kbdmap.h>
#include <amiga/dev/kbdvar.h>
#include <amiga/dev/event_var.h>
#include <amiga/dev/vuid_event.h>
#include "kbd.h"
#include "ite.h"
/* WSKBD */
/*
* If NWSKBD>0 we try to attach a wskbd device to us. What follows
* is definitions of callback functions and structures that are passed
* to wscons when initializing.
*/
/*
* Now with wscons this driver exhibits some weird behaviour.
* It may act both as a driver of its own and the md part of the
* wskbd driver. Therefore it can be accessed through /dev/kbd
* and /dev/wskbd0 both.
*
* The data from they keyboard may end up in at least four different
* places:
* - If this driver has been opened (/dev/kbd) and the
* direct mode (TIOCDIRECT) has been set, data goes to
* the process who opened the device. Data will transmit itself
* as described by the firm_event structure.
* - If wskbd support is compiled in and a wskbd driver has been
* attached then the data is sent to it. Wskbd in turn may
* - Send the data in the wscons_event form to a process that
* has opened /dev/wskbd0
* - Feed the data to a virtual terminal.
* - If an ite is present the data may be fed to it.
*/
#include "wskbd.h"
#if NWSKBD>0
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wskbdvar.h>
#include <dev/wscons/wsksymdef.h>
#include <dev/wscons/wsksymvar.h>
#include <amiga/dev/wskbdmap_amiga.h>
/* accessops */
int kbd_enable(void *, int);
void kbd_set_leds(void *, int);
int kbd_ioctl(void *, u_long, void *, int, struct lwp *);
/* console ops */
void kbd_getc(void *, u_int *, int *);
void kbd_pollc(void *, int);
void kbd_bell(void *, u_int, u_int, u_int);
static struct wskbd_accessops kbd_accessops = {
kbd_enable,
kbd_set_leds,
kbd_ioctl
};
static struct wskbd_consops kbd_consops = {
kbd_getc,
kbd_pollc,
kbd_bell
};
/*
* Pointer to keymaps. They are defined in wskbdmap_amiga.c.
*/
static struct wskbd_mapdata kbd_mapdata = {
amigakbd_keydesctab,
KB_US
};
#endif /* WSKBD */
struct kbd_softc {
int k_event_mode; /* if true, collect events, else pass to ite */
struct evvar k_events; /* event queue state */
#ifdef DRACO
u_char k_rlprfx; /* MF-II rel. prefix has been seen */
u_char k_mf2;
#endif
int k_console; /* true if used as console keyboard */
#if NWSKBD>0
device_t k_wskbddev; /* pointer to wskbd for sending strokes */
int k_pollingmode; /* Polling mode on? Otherwise send events. */
#endif
};
struct kbd_softc kbd_softc;
int kbdmatch(device_t, cfdata_t, void *);
void kbdattach(device_t, device_t, void *);
void kbdintr(int);
void kbdstuffchar(u_char);
int drkbdgetc(void);
int drkbdrputc(u_int8_t);
int drkbdputc(u_int8_t);
int drkbdputc2(u_int8_t, u_int8_t);
int drkbdwaitfor(int);
CFATTACH_DECL_NEW(kbd, 0,
kbdmatch, kbdattach, NULL, NULL);
dev_type_open(kbdopen);
dev_type_close(kbdclose);
dev_type_read(kbdread);
dev_type_ioctl(kbdioctl);
dev_type_poll(kbdpoll);
dev_type_kqfilter(kbdkqfilter);
const struct cdevsw kbd_cdevsw = {
.d_open = kbdopen,
.d_close = kbdclose,
.d_read = kbdread,
.d_write = nowrite,
.d_ioctl = kbdioctl,
.d_stop = nostop,
.d_tty = notty,
.d_poll = kbdpoll,
.d_mmap = nommap,
.d_kqfilter = kbdkqfilter,
.d_discard = nodiscard,
.d_flag = 0
};
/*ARGSUSED*/
int
kbdmatch(device_t parent, cfdata_t cf, void *aux)
{
if (matchname((char *)aux, "kbd"))
return(1);
return(0);
}
/*ARGSUSED*/
void
kbdattach(device_t parent, device_t self, void *aux)
{
#ifdef DRACO
kbdenable();
if (kbd_softc.k_mf2)
printf(": QuickLogic type MF-II\n");
else
printf(": CIA A type Amiga\n");
#else
printf(": CIA A type Amiga\n");
#endif
#if NWSKBD>0
if (self != NULL) {
/*
* Try to attach the wskbd.
*/
struct wskbddev_attach_args waa;
waa.console = kbd_softc.k_console;
waa.keymap = &kbd_mapdata;
waa.accessops = &kbd_accessops;
waa.accesscookie = NULL;
kbd_softc.k_wskbddev = config_found(self, &waa, wskbddevprint,
CFARGS(.iattr = "wskbddev"));
kbd_softc.k_pollingmode = 0;
}
kbdenable();
#endif /* WSKBD */
}
/*
* This is called when somebody wants to use kbd as the console keyboard.
*/
void
kbd_cnattach(void)
{
#if NWSKBD>0
wskbd_cnattach(&kbd_consops, NULL, &kbd_mapdata);
kbd_softc.k_console = 1;
#endif
}
/* definitions for amiga keyboard encoding. */
#define KEY_CODE(c) ((c) & 0x7f)
#define KEY_UP(c) ((c) & 0x80)
#define DATLO single_inst_bclr_b(draco_ioct->io_control, DRCNTRL_KBDDATOUT)
#define DATHI single_inst_bset_b(draco_ioct->io_control, DRCNTRL_KBDDATOUT)
#define CLKLO single_inst_bclr_b(draco_ioct->io_control, DRCNTRL_KBDCLKOUT)
#define CLKHI single_inst_bset_b(draco_ioct->io_control, DRCNTRL_KBDCLKOUT)
void
kbdenable(void)
{
static int kbd_inited = 0;
int s;
#ifdef DRACO
int id;
#endif
/*
* collides with external ints from SCSI, watch out for this when
* enabling/disabling interrupts there !!
*/
s = splhigh(); /* don't lower; might be called from early ddb */
if (kbd_inited) {
splx(s);
return;
}
kbd_inited = 1;
#ifdef DRACO
if (is_draco()) {
CLKLO;
delay(5000);
draco_ioct->io_kbdrst = 0;
if (drkbdputc(0xf2))
goto LnoMFII;
id = drkbdgetc() << 8;
id |= drkbdgetc();
if (id != 0xab83)
goto LnoMFII;
if (drkbdputc2(0xf0, 3)) /* mode 3 */
goto LnoMFII;
if (drkbdputc(0xf8)) /* make/break, no typematic */
goto LnoMFII;
if (drkbdputc(0xf4)) /* enable */
goto LnoMFII;
kbd_softc.k_mf2 = 1;
single_inst_bclr_b(draco_ioct->io_control, DRCNTRL_KBDINTENA);
ciaa.icr = CIA_ICR_SP; /* CIA SP interrupt disable */
ciaa.cra &= ~(1<<6); /* serial line == input */
splx(s);
return;
LnoMFII:
kbd_softc.k_mf2 = 0;
single_inst_bset_b(*draco_intena, DRIRQ_INT2);
ciaa.icr = CIA_ICR_IR_SC | CIA_ICR_SP;
/* SP interrupt enable */
ciaa.cra &= ~(1<<6); /* serial line == input */
splx(s);
return;
} else {
#endif
custom.intena = INTF_SETCLR | INTF_PORTS;
ciaa.icr = CIA_ICR_IR_SC | CIA_ICR_SP; /* SP interrupt enable */
ciaa.cra &= ~(1<<6); /* serial line == input */
#ifdef DRACO
}
#endif
kbd_softc.k_event_mode = 0;
kbd_softc.k_events.ev_io = 0;
splx(s);
}
#ifdef DRACO
/*
* call this with kbd interrupt blocked
*/
int
drkbdgetc(void)
{
u_int8_t in;
while ((draco_ioct->io_status & DRSTAT_KBDRECV) == 0);
in = draco_ioct->io_kbddata;
draco_ioct->io_kbdrst = 0;
return in;
}
#define WAIT0 if (drkbdwaitfor(0)) goto Ltimeout
#define WAIT1 if (drkbdwaitfor(DRSTAT_KBDCLKIN)) goto Ltimeout
int
drkbdwaitfor(int bit)
{
int i;
i = 60000; /* about 50 ms max */
do {
if ((draco_ioct->io_status & DRSTAT_KBDCLKIN) == bit)
return 0;
} while (--i >= 0);
return 1;
}
/*
* Output a raw byte to the keyboard (+ parity and stop bit).
* return 0 on success, 1 on timeout.
*/
int
drkbdrputc(u_int8_t c)
{
u_int8_t parity;
int bitcnt;
DATLO; CLKHI; WAIT1;
parity = 0;
for (bitcnt=7; bitcnt >= 0; bitcnt--) {
WAIT0;
if (c & 1) {
DATHI;
} else {
++parity;
DATLO;
}
c >>= 1;
WAIT1;
}
WAIT0;
/* parity bit */
if (parity & 1) {
DATLO;
} else {
DATHI;
}
WAIT1;
/* stop bit */
WAIT0; DATHI; WAIT1;
WAIT0; /* XXX should check the ack bit here... */
WAIT1;
draco_ioct->io_kbdrst = 0;
return 0;
Ltimeout:
DATHI;
draco_ioct->io_kbdrst = 0;
return 1;
}
/*
* Output one cooked byte to the keyboard, with wait for ACK or RESEND,
* and retry if necessary. 0 == success, 1 == timeout
*/
int
drkbdputc(u_int8_t c)
{
int rc;
do {
if (drkbdrputc(c))
return(-1);
rc = drkbdgetc();
} while (rc == 0xfe);
return (!(rc == 0xfa));
}
/*
* same for twobyte sequence
*/
int
drkbdputc2(u_int8_t c1, u_int8_t c2)
{
int rc;
do {
do {
if (drkbdrputc(c1))
return(-1);
rc = drkbdgetc();
} while (rc == 0xfe);
if (rc != 0xfa)
return (-1);
if (drkbdrputc(c2))
return(-1);
rc = drkbdgetc();
} while (rc == 0xfe);
return (!(rc == 0xfa));
}
#endif
int
kbdopen(dev_t dev, int flags, int mode, struct lwp *l)
{
kbdenable();
if (kbd_softc.k_events.ev_io)
return EBUSY;
kbd_softc.k_events.ev_io = l->l_proc;
ev_init(&kbd_softc.k_events);
return (0);
}
int
kbdclose(dev_t dev, int flags, int mode, struct lwp *l)
{
/* 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_t dev, struct uio *uio, int flags)
{
return ev_read (&kbd_softc.k_events, uio, flags);
}
int
kbdioctl(dev_t dev, u_long cmd, register void *data, int flag,
struct lwp *l)
{
register struct kbd_softc *k = &kbd_softc;
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 FIONBIO: /* we will remove this someday (soon???) */
return 0;
case FIOASYNC:
k->k_events.ev_async = *(int *)data != 0;
return 0;
case FIOSETOWN:
if (-*(int *)data != k->k_events.ev_io->p_pgid
&& *(int *)data != k->k_events.ev_io->p_pid)
return EPERM;
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_t dev, int events, struct lwp *l)
{
return ev_poll (&kbd_softc.k_events, events, l);
}
int
kbdkqfilter(dev_t dev, struct knote *kn)
{
return (ev_kqfilter(&kbd_softc.k_events, kn));
}
void
kbdintr(int mask)
{
u_char c;
#ifdef KBDRESET
static int reset_warn;
#endif
/*
* now only invoked from generic CIA interrupt handler if there *is*
* a keyboard interrupt pending
*/
c = ~ciaa.sdr; /* keyboard data is inverted */
/* ack */
ciaa.cra |= (1 << 6); /* serial line output */
#ifdef KBDRESET
if (reset_warn && c == 0xf0) {
#ifdef DEBUG
printf ("kbdintr: !!!! Reset Warning !!!!\n");
#endif
bootsync();
reset_warn = 0;
DELAY(30000000);
}
#endif
/* wait 200 microseconds (for bloody Cherry keyboards..) */
DELAY(200); /* fudge delay a bit for some keyboards */
ciaa.cra &= ~(1 << 6);
/* process the character */
c = (c >> 1) | (c << 7); /* rotate right once */
#ifdef KBDRESET
if (c == 0x78) {
#ifdef DEBUG
printf ("kbdintr: Reset Warning started\n");
#endif
++reset_warn;
return;
}
#endif
kbdstuffchar(c);
}
#ifdef DRACO
/* maps MF-II keycodes to Amiga keycodes */
const u_char drkbdtab[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x50,
0x45, 0xff, 0xff, 0xff, 0xff, 0x42, 0x00, 0x51,
0xff, 0x64, 0x60, 0x30, 0x63, 0x10, 0x01, 0x52,
0xff, 0x66, 0x31, 0x21, 0x20, 0x11, 0x02, 0x53,
0xff, 0x33, 0x32, 0x22, 0x12, 0x04, 0x03, 0x54,
0xff, 0x40, 0x34, 0x23, 0x14, 0x13, 0x05, 0x55,
0xff, 0x36, 0x35, 0x25, 0x24, 0x15, 0x06, 0x56,
0xff, 0x67, 0x37, 0x26, 0x16, 0x07, 0x08, 0x57,
/* --- */
0xff, 0x38, 0x27, 0x17, 0x18, 0x0a, 0x09, 0x58,
0xff, 0x39, 0x3a, 0x28, 0x29, 0x19, 0x0b, 0x59,
0xff, 0xff, 0x2a, 0x2b, 0x1a, 0x0c, 0x4b, 0xff,
0x65, 0x61, 0x44, 0x1b, 0xff, 0xff, 0x6f, 0xff,
0x4d, 0x4f, 0xff, 0x4c, 0x0d, 0xff, 0x41, 0x46,
0xff, 0x1d, 0x4e, 0x2d, 0x3d, 0x4a, 0x5f, 0x62,
0x0f, 0x3c, 0x1e, 0x2e, 0x2f, 0x3e, 0x5a, 0x5b,
0xff, 0x43, 0x1f, 0xff, 0x5e, 0x3f, 0x5c, 0xff,
/* --- */
0xff, 0xff, 0xff, 0xff, 0x5d
};
#endif
int
kbdgetcn(void)
{
int s;
u_char ints, mask, c, in;
#ifdef DRACO
if (is_draco() && kbd_softc.k_mf2) {
do {
c = 0;
s = spltty ();
while ((draco_ioct->io_status & DRSTAT_KBDRECV) == 0);
in = draco_ioct->io_kbddata;
draco_ioct->io_kbdrst = 0;
if (in == 0xF0) { /* release prefix */
c = 0x80;
while ((draco_ioct->io_status &
DRSTAT_KBDRECV) == 0);
in = draco_ioct->io_kbddata;
draco_ioct->io_kbdrst = 0;
}
splx(s);
#ifdef DRACORAWKEYDEBUG
printf("<%02x>", in);
#endif
c |= in>=sizeof(drkbdtab) ? 0xff : drkbdtab[in];
} while (c == 0xff);
return (c);
}
#endif
s = spltty();
for (ints = 0; ! ((mask = ciaa.icr) & CIA_ICR_SP);
ints |= mask) ;
in = ciaa.sdr;
c = ~in;
/* ack */
ciaa.cra |= (1 << 6); /* serial line output */
ciaa.sdr = 0xff; /* ack */
/* wait 200 microseconds */
DELAY(200); /* XXXX only works as long as DELAY doesn't
* use a timer and waits.. */
ciaa.cra &= ~(1 << 6);
ciaa.sdr = in;
splx (s);
c = (c >> 1) | (c << 7);
/* take care that no CIA-interrupts are lost */
if (ints)
dispatch_cia_ints (0, ints);
return c;
}
void
kbdstuffchar(u_char c)
{
struct firm_event *fe;
struct kbd_softc *k = &kbd_softc;
int put;
#if NWSKBD>0
/*
* If we have attached a wskbd and not in polling mode and
* nobody has opened us directly, then send the keystroke
* to the wskbd.
*/
if (kbd_softc.k_pollingmode == 0
&& kbd_softc.k_wskbddev != NULL
&& k->k_event_mode == 0) {
wskbd_input(kbd_softc.k_wskbddev,
KEY_UP(c) ?
WSCONS_EVENT_KEY_UP :
WSCONS_EVENT_KEY_DOWN,
KEY_CODE(c));
return;
}
#endif /* NWSKBD */
/*
* If not in event mode, deliver straight to ite to process
* key stroke
*/
if (! k->k_event_mode) {
#if NITE>0
ite_filter (c, ITEFILT_TTY);
#endif
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;
firm_gettime(fe);
k->k_events.ev_put = put;
EV_WAKEUP(&k->k_events);
}
#ifdef DRACO
void
drkbdintr(void)
{
u_char in;
struct kbd_softc *k = &kbd_softc;
in = draco_ioct->io_kbddata;
draco_ioct->io_kbdrst = 0;
if (in == 0xF0)
k->k_rlprfx = 0x80;
else {
kbdstuffchar(in>=sizeof(drkbdtab) ? 0xff :
drkbdtab[in] | k->k_rlprfx);
k->k_rlprfx = 0;
}
}
#endif
#if NWSKBD>0
/*
* These are the callback functions that are passed to wscons.
* They really don't do anything worth noting, just call the
* other functions above.
*/
int
kbd_enable(void *c, int on)
{
/* Wonder what this is supposed to do... */
return (0);
}
void
kbd_set_leds(void *c, int leds)
{
}
int
kbd_ioctl(void *c, u_long cmd, void *data, int flag, struct lwp *l)
{
switch (cmd)
{
case WSKBDIO_COMPLEXBELL:
return 0;
case WSKBDIO_SETLEDS:
return 0;
case WSKBDIO_GETLEDS:
*(int*)data = 0;
return 0;
case WSKBDIO_GTYPE:
*(u_int*)data = WSKBD_TYPE_AMIGA;
return 0;
}
/*
* We are supposed to return EPASSTHROUGH to wscons if we didn't
* understand.
*/
return (EPASSTHROUGH);
}
void
kbd_getc(void *c, u_int *type, int *data)
{
int key;
key = kbdgetcn();
*data = KEY_CODE(key);
*type = KEY_UP(key) ? WSCONS_EVENT_KEY_UP : WSCONS_EVENT_KEY_DOWN;
}
void
kbd_pollc(void *c, int on)
{
kbd_softc.k_pollingmode = on;
}
void
kbd_bell(void *c, u_int x, u_int y, u_int z)
{
}
#endif /* WSKBD */
