NetBSD/sys/dev/pckbc/pckbd.c

688 lines
16 KiB
C

/* $NetBSD: pckbd.c,v 1.30 2002/03/17 19:41:00 atatat Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz and Don Ahn.
*
* 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.
*
* @(#)pccons.c 5.11 (Berkeley) 5/21/91
*/
/*
* code to work keyboard for PC-style console
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pckbd.c,v 1.30 2002/03/17 19:41:00 atatat Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/ioctl.h>
#include <machine/bus.h>
#include <dev/ic/pckbcvar.h>
#include <dev/pckbc/pckbdreg.h>
#include <dev/pckbc/pckbdvar.h>
#include <dev/pckbc/wskbdmap_mfii.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wskbdvar.h>
#include <dev/wscons/wsksymdef.h>
#include <dev/wscons/wsksymvar.h>
#include "locators.h"
#include "opt_pckbd_layout.h"
#include "opt_wsdisplay_compat.h"
struct pckbd_internal {
int t_isconsole;
pckbc_tag_t t_kbctag;
pckbc_slot_t t_kbcslot;
int t_lastchar;
int t_extended;
int t_extended1;
struct pckbd_softc *t_sc; /* back pointer */
};
struct pckbd_softc {
struct device sc_dev;
struct pckbd_internal *id;
int sc_enabled;
int sc_ledstate;
struct device *sc_wskbddev;
#ifdef WSDISPLAY_COMPAT_RAWKBD
int rawkbd;
#endif
};
static int pckbd_is_console __P((pckbc_tag_t, pckbc_slot_t));
int pckbdprobe __P((struct device *, struct cfdata *, void *));
void pckbdattach __P((struct device *, struct device *, void *));
struct cfattach pckbd_ca = {
sizeof(struct pckbd_softc), pckbdprobe, pckbdattach,
};
int pckbd_enable __P((void *, int));
void pckbd_set_leds __P((void *, int));
int pckbd_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
const struct wskbd_accessops pckbd_accessops = {
pckbd_enable,
pckbd_set_leds,
pckbd_ioctl,
};
void pckbd_cngetc __P((void *, u_int *, int *));
void pckbd_cnpollc __P((void *, int));
void pckbd_cnbell __P((void *, u_int, u_int, u_int));
const struct wskbd_consops pckbd_consops = {
pckbd_cngetc,
pckbd_cnpollc,
pckbd_cnbell,
};
const struct wskbd_mapdata pckbd_keymapdata = {
pckbd_keydesctab,
#ifdef PCKBD_LAYOUT
PCKBD_LAYOUT,
#else
KB_US,
#endif
};
/*
* Hackish support for a bell on the PC Keyboard; when a suitable feeper
* is found, it attaches itself into the pckbd driver here.
*/
void (*pckbd_bell_fn) __P((void *, u_int, u_int, u_int, int));
void *pckbd_bell_fn_arg;
void pckbd_bell __P((u_int, u_int, u_int, int));
int pckbd_set_xtscancode __P((pckbc_tag_t, pckbc_slot_t));
int pckbd_init __P((struct pckbd_internal *, pckbc_tag_t, pckbc_slot_t,
int));
void pckbd_input __P((void *, int));
static int pckbd_decode __P((struct pckbd_internal *, int,
u_int *, int *));
static int pckbd_led_encode __P((int));
static int pckbd_led_decode __P((int));
struct pckbd_internal pckbd_consdata;
int
pckbd_set_xtscancode(kbctag, kbcslot)
pckbc_tag_t kbctag;
pckbc_slot_t kbcslot;
{
u_char cmd[2];
int res;
/*
* Some keyboard/8042 combinations do not seem to work if the keyboard
* is set to table 1; in fact, it would appear that some keyboards just
* ignore the command altogether. So by default, we use the AT scan
* codes and have the 8042 translate them. Unfortunately, this is
* known to not work on some PS/2 machines. We try desparately to deal
* with this by checking the (lack of a) translate bit in the 8042 and
* attempting to set the keyboard to XT mode. If this all fails, well,
* tough luck.
*
* XXX It would perhaps be a better choice to just use AT scan codes
* and not bother with this.
*/
if (pckbc_xt_translation(kbctag, kbcslot, 1)) {
/* The 8042 is translating for us; use AT codes. */
cmd[0] = KBC_SETTABLE;
cmd[1] = 2;
res = pckbc_poll_cmd(kbctag, kbcslot, cmd, 2, 0, 0, 0);
if (res) {
u_char cmd[1];
#ifdef DEBUG
printf("pckbd: error setting scanset 2\n");
#endif
/*
* XXX at least one keyboard is reported to lock up
* if a "set table" is attempted, thus the "reset".
* XXX ignore errors, scanset 2 should be
* default anyway.
*/
cmd[0] = KBC_RESET;
(void)pckbc_poll_cmd(kbctag, kbcslot, cmd, 1, 1, 0, 1);
pckbc_flush(kbctag, kbcslot);
res = 0;
}
} else {
/* Stupid 8042; set keyboard to XT codes. */
cmd[0] = KBC_SETTABLE;
cmd[1] = 1;
res = pckbc_poll_cmd(kbctag, kbcslot, cmd, 2, 0, 0, 0);
#ifdef DEBUG
if (res)
printf("pckbd: error setting scanset 1\n");
#endif
}
return (res);
}
static int
pckbd_is_console(tag, slot)
pckbc_tag_t tag;
pckbc_slot_t slot;
{
return (pckbd_consdata.t_isconsole &&
(tag == pckbd_consdata.t_kbctag) &&
(slot == pckbd_consdata.t_kbcslot));
}
/*
* these are both bad jokes
*/
int
pckbdprobe(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct pckbc_attach_args *pa = aux;
u_char cmd[1], resp[1];
int res;
/*
* XXX There are rumours that a keyboard can be connected
* to the aux port as well. For me, this didn't work.
* For further experiments, allow it if explicitly
* wired in the config file.
*/
if ((pa->pa_slot != PCKBC_KBD_SLOT) &&
(cf->cf_loc[PCKBCCF_SLOT] == PCKBCCF_SLOT_DEFAULT))
return (0);
/* Flush any garbage. */
pckbc_flush(pa->pa_tag, pa->pa_slot);
/* Reset the keyboard. */
cmd[0] = KBC_RESET;
res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 1, resp, 1);
if (res) {
#ifdef DEBUG
printf("pckbdprobe: reset error %d\n", res);
#endif
/*
* There is probably no keyboard connected.
* Let the probe succeed if the keyboard is used
* as console input - it can be connected later.
*/
return (pckbd_is_console(pa->pa_tag, pa->pa_slot) ? 1 : 0);
}
if (resp[0] != KBR_RSTDONE) {
printf("pckbdprobe: reset response 0x%x\n", resp[0]);
return (0);
}
/*
* Some keyboards seem to leave a second ack byte after the reset.
* This is kind of stupid, but we account for them anyway by just
* flushing the buffer.
*/
pckbc_flush(pa->pa_tag, pa->pa_slot);
if (pckbd_set_xtscancode(pa->pa_tag, pa->pa_slot))
return (0);
return (2);
}
void
pckbdattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pckbd_softc *sc = (void *)self;
struct pckbc_attach_args *pa = aux;
int isconsole;
struct wskbddev_attach_args a;
printf("\n");
isconsole = pckbd_is_console(pa->pa_tag, pa->pa_slot);
if (isconsole) {
sc->id = &pckbd_consdata;
sc->sc_enabled = 1;
} else {
u_char cmd[1];
sc->id = malloc(sizeof(struct pckbd_internal),
M_DEVBUF, M_WAITOK);
(void) pckbd_init(sc->id, pa->pa_tag, pa->pa_slot, 0);
/* no interrupts until enabled */
cmd[0] = KBC_DISABLE;
(void) pckbc_poll_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
cmd, 1, 0, 0, 0);
sc->sc_enabled = 0;
}
sc->id->t_sc = sc;
pckbc_set_inputhandler(sc->id->t_kbctag, sc->id->t_kbcslot,
pckbd_input, sc, sc->sc_dev.dv_xname);
a.console = isconsole;
a.keymap = &pckbd_keymapdata;
a.accessops = &pckbd_accessops;
a.accesscookie = sc;
/*
* Attach the wskbd, saving a handle to it.
* XXX XXX XXX
*/
sc->sc_wskbddev = config_found(self, &a, wskbddevprint);
}
int
pckbd_enable(v, on)
void *v;
int on;
{
struct pckbd_softc *sc = v;
u_char cmd[1];
int res;
if (on) {
if (sc->sc_enabled) {
#ifdef DIAGNOSTIC
printf("pckbd_enable: bad enable\n");
#endif
return (EBUSY);
}
pckbc_slot_enable(sc->id->t_kbctag, sc->id->t_kbcslot, 1);
cmd[0] = KBC_ENABLE;
res = pckbc_poll_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
cmd, 1, 0, NULL, 0);
if (res) {
printf("pckbd_enable: command error\n");
return (res);
}
res = pckbd_set_xtscancode(sc->id->t_kbctag,
sc->id->t_kbcslot);
if (res)
return (res);
sc->sc_enabled = 1;
} else {
if (sc->id->t_isconsole)
return (EBUSY);
cmd[0] = KBC_DISABLE;
res = pckbc_enqueue_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
cmd, 1, 0, 1, 0);
if (res) {
printf("pckbd_disable: command error\n");
return (res);
}
pckbc_slot_enable(sc->id->t_kbctag, sc->id->t_kbcslot, 0);
sc->sc_enabled = 0;
}
return (0);
}
static int
pckbd_decode(id, datain, type, dataout)
struct pckbd_internal *id;
int datain;
u_int *type;
int *dataout;
{
int key;
if (datain == KBR_EXTENDED0) {
id->t_extended = 1;
return(0);
} else if (datain == KBR_EXTENDED1) {
id->t_extended1 = 2;
return(0);
}
/* map extended keys to (unused) codes 128-254 */
key = (datain & 0x7f) | (id->t_extended ? 0x80 : 0);
id->t_extended = 0;
/*
* process BREAK key (EXT1 1D 45 EXT1 9D C5):
* map to (unused) code 7F
*/
if (id->t_extended1 == 2 && (datain == 0x1d || datain == 0x9d)) {
id->t_extended1 = 1;
return(0);
} else if (id->t_extended1 == 1 &&
(datain == 0x45 || datain == 0xc5)) {
id->t_extended1 = 0;
key = 0x7f;
} else if (id->t_extended1 > 0) {
id->t_extended1 = 0;
}
if (datain & 0x80) {
id->t_lastchar = 0;
*type = WSCONS_EVENT_KEY_UP;
} else {
/* Always ignore typematic keys */
if (key == id->t_lastchar)
return(0);
id->t_lastchar = key;
*type = WSCONS_EVENT_KEY_DOWN;
}
*dataout = key;
return(1);
}
int
pckbd_init(t, kbctag, kbcslot, console)
struct pckbd_internal *t;
pckbc_tag_t kbctag;
pckbc_slot_t kbcslot;
int console;
{
memset(t, 0, sizeof(struct pckbd_internal));
t->t_isconsole = console;
t->t_kbctag = kbctag;
t->t_kbcslot = kbcslot;
return (pckbd_set_xtscancode(kbctag, kbcslot));
}
static int
pckbd_led_encode(led)
int led;
{
int res;
res = 0;
if (led & WSKBD_LED_SCROLL)
res |= 0x01;
if (led & WSKBD_LED_NUM)
res |= 0x02;
if (led & WSKBD_LED_CAPS)
res |= 0x04;
return(res);
}
static int
pckbd_led_decode(led)
int led;
{
int res;
res = 0;
if (led & 0x01)
res |= WSKBD_LED_SCROLL;
if (led & 0x02)
res |= WSKBD_LED_NUM;
if (led & 0x04)
res |= WSKBD_LED_CAPS;
return(res);
}
void
pckbd_set_leds(v, leds)
void *v;
int leds;
{
struct pckbd_softc *sc = v;
u_char cmd[2];
cmd[0] = KBC_MODEIND;
cmd[1] = pckbd_led_encode(leds);
sc->sc_ledstate = cmd[1];
(void) pckbc_enqueue_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
cmd, 2, 0, 0, 0);
}
/*
* Got a console receive interrupt -
* the console processor wants to give us a character.
*/
void
pckbd_input(vsc, data)
void *vsc;
int data;
{
struct pckbd_softc *sc = vsc;
int type, key;
#ifdef WSDISPLAY_COMPAT_RAWKBD
if (sc->rawkbd) {
char d = data;
wskbd_rawinput(sc->sc_wskbddev, &d, 1);
return;
}
#endif
if (pckbd_decode(sc->id, data, &type, &key))
wskbd_input(sc->sc_wskbddev, type, key);
}
int
pckbd_ioctl(v, cmd, data, flag, p)
void *v;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct pckbd_softc *sc = v;
switch (cmd) {
case WSKBDIO_GTYPE:
*(int *)data = WSKBD_TYPE_PC_XT;
return 0;
case WSKBDIO_SETLEDS: {
char cmd[2];
int res;
cmd[0] = KBC_MODEIND;
cmd[1] = pckbd_led_encode(*(int *)data);
sc->sc_ledstate = cmd[1];
res = pckbc_enqueue_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
cmd, 2, 0, 1, 0);
return (res);
}
case WSKBDIO_GETLEDS:
*(int *)data = pckbd_led_decode(sc->sc_ledstate);
return (0);
case WSKBDIO_COMPLEXBELL:
#define d ((struct wskbd_bell_data *)data)
/*
* Keyboard can't beep directly; we have an
* externally-provided global hook to do this.
*/
pckbd_bell(d->pitch, d->period, d->volume, 0);
#undef d
return (0);
#ifdef WSDISPLAY_COMPAT_RAWKBD
case WSKBDIO_SETMODE:
sc->rawkbd = (*(int *)data == WSKBD_RAW);
return (0);
#endif
}
return EPASSTHROUGH;
}
void
pckbd_bell(pitch, period, volume, poll)
u_int pitch, period, volume;
int poll;
{
if (pckbd_bell_fn != NULL)
(*pckbd_bell_fn)(pckbd_bell_fn_arg, pitch, period,
volume, poll);
}
void
pckbd_hookup_bell(fn, arg)
void (*fn) __P((void *, u_int, u_int, u_int, int));
void *arg;
{
if (pckbd_bell_fn == NULL) {
pckbd_bell_fn = fn;
pckbd_bell_fn_arg = arg;
}
}
int
pckbd_cnattach(kbctag, kbcslot)
pckbc_tag_t kbctag;
int kbcslot;
{
char cmd[1];
int res;
res = pckbd_init(&pckbd_consdata, kbctag, kbcslot, 1);
#if 0 /* we allow the console to be attached if no keyboard is present */
if (res)
return (res);
#endif
/* Just to be sure. */
cmd[0] = KBC_ENABLE;
res = pckbc_poll_cmd(kbctag, kbcslot, cmd, 1, 0, 0, 0);
#if 0
if (res)
return (res);
#endif
wskbd_cnattach(&pckbd_consops, &pckbd_consdata, &pckbd_keymapdata);
return (0);
}
/* ARGSUSED */
void
pckbd_cngetc(v, type, data)
void *v;
u_int *type;
int *data;
{
struct pckbd_internal *t = v;
int val;
for (;;) {
val = pckbc_poll_data(t->t_kbctag, t->t_kbcslot);
if ((val != -1) && pckbd_decode(t, val, type, data))
return;
}
}
void
pckbd_cnpollc(v, on)
void *v;
int on;
{
struct pckbd_internal *t = v;
pckbc_set_poll(t->t_kbctag, t->t_kbcslot, on);
}
void
pckbd_cnbell(v, pitch, period, volume)
void *v;
u_int pitch, period, volume;
{
pckbd_bell(pitch, period, volume, 1);
}