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freebsd-skq/sys/dev/atkbdc/atkbd.c
Poul-Henning Kamp 4e2f199e0c This commit should be a extensive NO-OP: 
Reformat and initialize correctly all "struct cdevsw".

        Initialize the d_maj and d_bmaj fields.

        The d_reset field was not removed, although it is never used.

I used a program to do most of this, so all the files now use the
same consistent format.  Please keep it that way.

Vinum and i4b not modified, patches emailed to respective authors.
1999-05-30 16:53:49 +00:00

1397 lines
34 KiB
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/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* 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 as
* the first lines of this file unmodified.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
*
* $Id: atkbd.c,v 1.10 1999/05/20 09:49:33 yokota Exp $
*/
#include "atkbd.h"
#include "opt_kbd.h"
#include "opt_atkbd.h"
#include "opt_devfs.h"
#if NATKBD > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <sys/proc.h>
#include <sys/tty.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <dev/kbd/kbdreg.h>
#include <dev/kbd/atkbdreg.h>
#include <dev/kbd/atkbdcreg.h>
#include <isa/isareg.h>
#define ATKBD_SOFTC(unit) \
((atkbd_softc_t *)devclass_get_softc(atkbd_devclass, unit))
extern devclass_t atkbd_devclass;
static timeout_t atkbd_timeout;
#ifdef KBD_INSTALL_CDEV
static d_open_t atkbdopen;
static d_close_t atkbdclose;
static d_read_t atkbdread;
static d_ioctl_t atkbdioctl;
static d_poll_t atkbdpoll;
static struct cdevsw atkbd_cdevsw = {
/* open */ atkbdopen,
/* close */ atkbdclose,
/* read */ atkbdread,
/* write */ nowrite,
/* ioctl */ atkbdioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ nodevtotty,
/* poll */ atkbdpoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ ATKBD_DRIVER_NAME,
/* parms */ noparms,
/* maj */ -1,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* maxio */ 0,
/* bmaj */ -1
};
#endif /* KBD_INSTALL_CDEV */
int
atkbd_probe_unit(int unit, int port, int irq, int flags)
{
keyboard_switch_t *sw;
int args[2];
int error;
sw = kbd_get_switch(ATKBD_DRIVER_NAME);
if (sw == NULL)
return ENXIO;
args[0] = port;
args[1] = irq;
error = (*sw->probe)(unit, args, flags);
if (error)
return error;
return 0;
}
int
atkbd_attach_unit(int unit, atkbd_softc_t *sc, int port, int irq, int flags)
{
keyboard_switch_t *sw;
int args[2];
int error;
if (sc->flags & ATKBD_ATTACHED)
return 0;
sw = kbd_get_switch(ATKBD_DRIVER_NAME);
if (sw == NULL)
return ENXIO;
/* reset, initialize and enable the device */
args[0] = port;
args[1] = irq;
sc->kbd = NULL;
error = (*sw->probe)(unit, args, flags);
if (error)
return error;
error = (*sw->init)(unit, &sc->kbd, args, flags);
if (error)
return error;
(*sw->enable)(sc->kbd);
#ifdef KBD_INSTALL_CDEV
/* attach a virtual keyboard cdev */
error = kbd_attach(makedev(0, ATKBD_MKMINOR(unit)), sc->kbd,
&atkbd_cdevsw);
if (error)
return error;
#endif
/*
* This is a kludge to compensate for lost keyboard interrupts.
* A similar code used to be in syscons. See below. XXX
*/
atkbd_timeout(sc->kbd);
if (bootverbose)
(*sw->diag)(sc->kbd, bootverbose);
sc->flags |= ATKBD_ATTACHED;
return 0;
}
static void
atkbd_timeout(void *arg)
{
keyboard_t *kbd;
int s;
/* The following comments are extracted from syscons.c (1.287) */
/*
* With release 2.1 of the Xaccel server, the keyboard is left
* hanging pretty often. Apparently an interrupt from the
* keyboard is lost, and I don't know why (yet).
* This ugly hack calls scintr if input is ready for the keyboard
* and conveniently hides the problem. XXX
*/
/*
* Try removing anything stuck in the keyboard controller; whether
* it's a keyboard scan code or mouse data. `scintr()' doesn't
* read the mouse data directly, but `kbdio' routines will, as a
* side effect.
*/
s = spltty();
kbd = (keyboard_t *)arg;
if ((*kbdsw[kbd->kb_index]->lock)(kbd, TRUE)) {
/*
* We have seen the lock flag is not set. Let's reset
* the flag early, otherwise the LED update routine fails
* which may want the lock during the interrupt routine.
*/
(*kbdsw[kbd->kb_index]->lock)(kbd, FALSE);
if ((*kbdsw[kbd->kb_index]->check_char)(kbd))
(*kbdsw[kbd->kb_index]->intr)(kbd, NULL);
}
splx(s);
timeout(atkbd_timeout, arg, hz/10);
}
/* cdev driver functions */
#ifdef KBD_INSTALL_CDEV
static int
atkbdopen(dev_t dev, int flag, int mode, struct proc *p)
{
atkbd_softc_t *sc;
sc = ATKBD_SOFTC(ATKBD_UNIT(dev));
if (sc == NULL)
return ENXIO;
if (mode & (FWRITE | O_CREAT | O_APPEND | O_TRUNC))
return ENODEV;
/* FIXME: set the initial input mode (K_XLATE?) and lock state? */
return genkbdopen(&sc->gensc, sc->kbd, flag, mode, p);
}
static int
atkbdclose(dev_t dev, int flag, int mode, struct proc *p)
{
atkbd_softc_t *sc;
sc = ATKBD_SOFTC(ATKBD_UNIT(dev));
return genkbdclose(&sc->gensc, sc->kbd, flag, mode, p);
}
static int
atkbdread(dev_t dev, struct uio *uio, int flag)
{
atkbd_softc_t *sc;
sc = ATKBD_SOFTC(ATKBD_UNIT(dev));
return genkbdread(&sc->gensc, sc->kbd, uio, flag);
}
static int
atkbdioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p)
{
atkbd_softc_t *sc;
sc = ATKBD_SOFTC(ATKBD_UNIT(dev));
return genkbdioctl(&sc->gensc, sc->kbd, cmd, arg, flag, p);
}
static int
atkbdpoll(dev_t dev, int event, struct proc *p)
{
atkbd_softc_t *sc;
sc = ATKBD_SOFTC(ATKBD_UNIT(dev));
return genkbdpoll(&sc->gensc, sc->kbd, event, p);
}
#endif /* KBD_INSTALL_CDEV */
/* LOW-LEVEL */
#include <machine/limits.h>
#include <machine/console.h>
#include <machine/clock.h>
#define ATKBD_DEFAULT 0
typedef struct atkbd_state {
KBDC kbdc; /* keyboard controller */
/* XXX: don't move this field; pcvt
* expects `kbdc' to be the first
* field in this structure. */
int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */
int ks_flags; /* flags */
#define COMPOSE (1 << 0)
int ks_polling;
int ks_state; /* shift/lock key state */
int ks_accents; /* accent key index (> 0) */
u_int ks_composed_char; /* composed char code (> 0) */
u_char ks_prefix; /* AT scan code prefix */
} atkbd_state_t;
/* keyboard driver declaration */
static int atkbd_configure(int flags);
static kbd_probe_t atkbd_probe;
static kbd_init_t atkbd_init;
static kbd_term_t atkbd_term;
static kbd_intr_t atkbd_intr;
static kbd_test_if_t atkbd_test_if;
static kbd_enable_t atkbd_enable;
static kbd_disable_t atkbd_disable;
static kbd_read_t atkbd_read;
static kbd_check_t atkbd_check;
static kbd_read_char_t atkbd_read_char;
static kbd_check_char_t atkbd_check_char;
static kbd_ioctl_t atkbd_ioctl;
static kbd_lock_t atkbd_lock;
static kbd_clear_state_t atkbd_clear_state;
static kbd_get_state_t atkbd_get_state;
static kbd_set_state_t atkbd_set_state;
static kbd_poll_mode_t atkbd_poll;
keyboard_switch_t atkbdsw = {
atkbd_probe,
atkbd_init,
atkbd_term,
atkbd_intr,
atkbd_test_if,
atkbd_enable,
atkbd_disable,
atkbd_read,
atkbd_check,
atkbd_read_char,
atkbd_check_char,
atkbd_ioctl,
atkbd_lock,
atkbd_clear_state,
atkbd_get_state,
atkbd_set_state,
genkbd_get_fkeystr,
atkbd_poll,
genkbd_diag,
};
KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure);
/* local functions */
static int setup_kbd_port(KBDC kbdc, int port, int intr);
static int get_kbd_echo(KBDC kbdc);
static int probe_keyboard(KBDC kbdc, int flags);
static int init_keyboard(KBDC kbdc, int *type, int flags);
static int write_kbd(KBDC kbdc, int command, int data);
static int get_kbd_id(KBDC kbdc);
static int typematic(int delay, int rate);
/* local variables */
/* the initial key map, accent map and fkey strings */
#ifdef ATKBD_DFLT_KEYMAP
#define KBD_DFLT_KEYMAP
#include "atkbdmap.h"
#endif
#include <dev/kbd/kbdtables.h>
/* structures for the default keyboard */
static keyboard_t default_kbd;
static atkbd_state_t default_kbd_state;
static keymap_t default_keymap;
static accentmap_t default_accentmap;
static fkeytab_t default_fkeytab[NUM_FKEYS];
/*
* The back door to the keyboard driver!
* This function is called by the console driver, via the kbdio module,
* to tickle keyboard drivers when the low-level console is being initialized.
* Almost nothing in the kernel has been initialied yet. Try to probe
* keyboards if possible.
* NOTE: because of the way the low-level conole is initialized, this routine
* may be called more than once!!
*/
static int
atkbd_configure(int flags)
{
keyboard_t *kbd;
int arg[2];
int i;
/* if the driver is disabled, unregister the keyboard if any */
if ((resource_int_value("atkbd", ATKBD_DEFAULT, "disabled", &i) == 0)
&& i != 0) {
i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT);
if (i >= 0) {
kbd = kbd_get_keyboard(i);
kbd_unregister(kbd);
kbd->kb_flags &= ~KB_REGISTERED;
return 0;
}
}
/* XXX: a kludge to obtain the device configuration flags */
if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0)
flags |= i;
/* probe the keyboard controller */
atkbdc_configure();
/* probe the default keyboard */
arg[0] = -1;
arg[1] = -1;
kbd = NULL;
if (atkbd_probe(ATKBD_DEFAULT, arg, flags))
return 0;
if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags))
return 0;
/* return the number of found keyboards */
return 1;
}
/* low-level functions */
/* detect a keyboard */
static int
atkbd_probe(int unit, void *arg, int flags)
{
KBDC kbdc;
int *data = (int *)arg;
/* XXX */
if (unit == ATKBD_DEFAULT) {
if (KBD_IS_PROBED(&default_kbd))
return 0;
}
kbdc = kbdc_open(data[0]);
if (kbdc == NULL)
return ENXIO;
if (probe_keyboard(kbdc, flags)) {
if (flags & KB_CONF_FAIL_IF_NO_KBD)
return ENXIO;
}
return 0;
}
/* reset and initialize the device */
static int
atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags)
{
keyboard_t *kbd;
atkbd_state_t *state;
keymap_t *keymap;
accentmap_t *accmap;
fkeytab_t *fkeymap;
int fkeymap_size;
int *data = (int *)arg;
/* XXX */
if (unit == ATKBD_DEFAULT) {
*kbdp = kbd = &default_kbd;
if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd))
return 0;
state = &default_kbd_state;
keymap = &default_keymap;
accmap = &default_accentmap;
fkeymap = default_fkeytab;
fkeymap_size =
sizeof(default_fkeytab)/sizeof(default_fkeytab[0]);
} else if (*kbdp == NULL) {
*kbdp = kbd = malloc(sizeof(*kbd), M_DEVBUF, M_NOWAIT);
if (kbd == NULL)
return ENOMEM;
bzero(kbd, sizeof(*kbd));
state = malloc(sizeof(*state), M_DEVBUF, M_NOWAIT);
keymap = malloc(sizeof(key_map), M_DEVBUF, M_NOWAIT);
accmap = malloc(sizeof(accent_map), M_DEVBUF, M_NOWAIT);
fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_NOWAIT);
fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]);
if ((state == NULL) || (keymap == NULL) || (accmap == NULL)
|| (fkeymap == NULL)) {
if (state != NULL)
free(state, M_DEVBUF);
if (keymap != NULL)
free(keymap, M_DEVBUF);
if (accmap != NULL)
free(accmap, M_DEVBUF);
if (fkeymap != NULL)
free(fkeymap, M_DEVBUF);
free(kbd, M_DEVBUF);
return ENOMEM;
}
bzero(state, sizeof(*state));
} else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) {
return 0;
} else {
kbd = *kbdp;
state = (atkbd_state_t *)kbd->kb_data;
bzero(state, sizeof(*state));
keymap = kbd->kb_keymap;
accmap = kbd->kb_accentmap;
fkeymap = kbd->kb_fkeytab;
fkeymap_size = kbd->kb_fkeytab_size;
}
if (!KBD_IS_PROBED(kbd)) {
state->kbdc = kbdc_open(data[0]);
if (state->kbdc == NULL)
return ENXIO;
kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags,
data[0], IO_KBDSIZE);
bcopy(&key_map, keymap, sizeof(key_map));
bcopy(&accent_map, accmap, sizeof(accent_map));
bcopy(fkey_tab, fkeymap,
imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab)));
kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size);
kbd->kb_data = (void *)state;
if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */
if (flags & KB_CONF_FAIL_IF_NO_KBD)
return ENXIO;
} else {
KBD_FOUND_DEVICE(kbd);
}
atkbd_clear_state(kbd);
state->ks_mode = K_XLATE;
/*
* FIXME: set the initial value for lock keys in ks_state
* according to the BIOS data?
*/
KBD_PROBE_DONE(kbd);
}
if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) {
if (KBD_HAS_DEVICE(kbd)
&& init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config)
&& (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD))
return ENXIO;
atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
KBD_INIT_DONE(kbd);
}
if (!KBD_IS_CONFIGURED(kbd)) {
if (kbd_register(kbd) < 0)
return ENXIO;
KBD_CONFIG_DONE(kbd);
}
return 0;
}
/* finish using this keyboard */
static int
atkbd_term(keyboard_t *kbd)
{
kbd_unregister(kbd);
return 0;
}
/* keyboard interrupt routine */
static int
atkbd_intr(keyboard_t *kbd, void *arg)
{
atkbd_state_t *state;
int c;
if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) {
/* let the callback function to process the input */
(*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT,
kbd->kb_callback.kc_arg);
} else {
/* read and discard the input; no one is waiting for input */
do {
c = atkbd_read_char(kbd, FALSE);
} while (c != NOKEY);
if (!KBD_HAS_DEVICE(kbd)) {
/*
* The keyboard was not detected before;
* it must have been reconnected!
*/
state = (atkbd_state_t *)kbd->kb_data;
init_keyboard(state->kbdc, &kbd->kb_type,
kbd->kb_config);
atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
KBD_FOUND_DEVICE(kbd);
}
}
return 0;
}
/* test the interface to the device */
static int
atkbd_test_if(keyboard_t *kbd)
{
int error;
int s;
error = 0;
empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10);
s = spltty();
if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc))
error = EIO;
else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0)
error = EIO;
splx(s);
return error;
}
/*
* Enable the access to the device; until this function is called,
* the client cannot read from the keyboard.
*/
static int
atkbd_enable(keyboard_t *kbd)
{
int s;
s = spltty();
KBD_ACTIVATE(kbd);
splx(s);
return 0;
}
/* disallow the access to the device */
static int
atkbd_disable(keyboard_t *kbd)
{
int s;
s = spltty();
KBD_DEACTIVATE(kbd);
splx(s);
return 0;
}
/* read one byte from the keyboard if it's allowed */
static int
atkbd_read(keyboard_t *kbd, int wait)
{
int c;
if (wait)
c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc);
else
c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc);
return (KBD_IS_ACTIVE(kbd) ? c : -1);
}
/* check if data is waiting */
static int
atkbd_check(keyboard_t *kbd)
{
if (!KBD_IS_ACTIVE(kbd))
return FALSE;
return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc);
}
/* read char from the keyboard */
static u_int
atkbd_read_char(keyboard_t *kbd, int wait)
{
atkbd_state_t *state;
u_int action;
int scancode;
int keycode;
state = (atkbd_state_t *)kbd->kb_data;
next_code:
/* do we have a composed char to return? */
if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {
action = state->ks_composed_char;
state->ks_composed_char = 0;
if (action > UCHAR_MAX)
return ERRKEY;
return action;
}
/* see if there is something in the keyboard port */
if (wait) {
do {
scancode = read_kbd_data(state->kbdc);
} while (scancode == -1);
} else {
scancode = read_kbd_data_no_wait(state->kbdc);
if (scancode == -1)
return NOKEY;
}
/* return the byte as is for the K_RAW mode */
if (state->ks_mode == K_RAW)
return scancode;
/* translate the scan code into a keycode */
keycode = scancode & 0x7F;
switch (state->ks_prefix) {
case 0x00: /* normal scancode */
switch(scancode) {
case 0xB8: /* left alt (compose key) released */
if (state->ks_flags & COMPOSE) {
state->ks_flags &= ~COMPOSE;
if (state->ks_composed_char > UCHAR_MAX)
state->ks_composed_char = 0;
}
break;
case 0x38: /* left alt (compose key) pressed */
if (!(state->ks_flags & COMPOSE)) {
state->ks_flags |= COMPOSE;
state->ks_composed_char = 0;
}
break;
case 0xE0:
case 0xE1:
state->ks_prefix = scancode;
goto next_code;
}
break;
case 0xE0: /* 0xE0 prefix */
state->ks_prefix = 0;
switch (keycode) {
case 0x1C: /* right enter key */
keycode = 0x59;
break;
case 0x1D: /* right ctrl key */
keycode = 0x5A;
break;
case 0x35: /* keypad divide key */
keycode = 0x5B;
break;
case 0x37: /* print scrn key */
keycode = 0x5C;
break;
case 0x38: /* right alt key (alt gr) */
keycode = 0x5D;
break;
case 0x46: /* ctrl-pause/break on AT 101 (see below) */
keycode = 0x68;
break;
case 0x47: /* grey home key */
keycode = 0x5E;
break;
case 0x48: /* grey up arrow key */
keycode = 0x5F;
break;
case 0x49: /* grey page up key */
keycode = 0x60;
break;
case 0x4B: /* grey left arrow key */
keycode = 0x61;
break;
case 0x4D: /* grey right arrow key */
keycode = 0x62;
break;
case 0x4F: /* grey end key */
keycode = 0x63;
break;
case 0x50: /* grey down arrow key */
keycode = 0x64;
break;
case 0x51: /* grey page down key */
keycode = 0x65;
break;
case 0x52: /* grey insert key */
keycode = 0x66;
break;
case 0x53: /* grey delete key */
keycode = 0x67;
break;
/* the following 3 are only used on the MS "Natural" keyboard */
case 0x5b: /* left Window key */
keycode = 0x69;
break;
case 0x5c: /* right Window key */
keycode = 0x6a;
break;
case 0x5d: /* menu key */
keycode = 0x6b;
break;
default: /* ignore everything else */
goto next_code;
}
break;
case 0xE1: /* 0xE1 prefix */
/*
* The pause/break key on the 101 keyboard produces:
* E1-1D-45 E1-9D-C5
* Ctrl-pause/break produces:
* E0-46 E0-C6 (See above.)
*/
state->ks_prefix = 0;
if (keycode == 0x1D)
state->ks_prefix = 0x1D;
goto next_code;
/* NOT REACHED */
case 0x1D: /* pause / break */
state->ks_prefix = 0;
if (keycode != 0x45)
goto next_code;
keycode = 0x68;
break;
}
if (kbd->kb_type == KB_84) {
switch (keycode) {
case 0x37: /* *(numpad)/print screen */
if (state->ks_flags & SHIFTS)
keycode = 0x5c; /* print screen */
break;
case 0x45: /* num lock/pause */
if (state->ks_flags & CTLS)
keycode = 0x68; /* pause */
break;
case 0x46: /* scroll lock/break */
if (state->ks_flags & CTLS)
keycode = 0x6c; /* break */
break;
}
} else if (kbd->kb_type == KB_101) {
switch (keycode) {
case 0x5c: /* print screen */
if (state->ks_flags & ALTS)
keycode = 0x54; /* sysrq */
break;
case 0x68: /* pause/break */
if (state->ks_flags & CTLS)
keycode = 0x6c; /* break */
break;
}
}
/* return the key code in the K_CODE mode */
if (state->ks_mode == K_CODE)
return (keycode | (scancode & 0x80));
/* compose a character code */
if (state->ks_flags & COMPOSE) {
switch (keycode | (scancode & 0x80)) {
/* key pressed, process it */
case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */
state->ks_composed_char *= 10;
state->ks_composed_char += keycode - 0x40;
if (state->ks_composed_char > UCHAR_MAX)
return ERRKEY;
goto next_code;
case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */
state->ks_composed_char *= 10;
state->ks_composed_char += keycode - 0x47;
if (state->ks_composed_char > UCHAR_MAX)
return ERRKEY;
goto next_code;
case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */
state->ks_composed_char *= 10;
state->ks_composed_char += keycode - 0x4E;
if (state->ks_composed_char > UCHAR_MAX)
return ERRKEY;
goto next_code;
case 0x52: /* keypad 0 */
state->ks_composed_char *= 10;
if (state->ks_composed_char > UCHAR_MAX)
return ERRKEY;
goto next_code;
/* key released, no interest here */
case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */
case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */
case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */
case 0xD2: /* keypad 0 */
goto next_code;
case 0x38: /* left alt key */
break;
default:
if (state->ks_composed_char > 0) {
state->ks_flags &= ~COMPOSE;
state->ks_composed_char = 0;
return ERRKEY;
}
break;
}
}
/* keycode to key action */
action = genkbd_keyaction(kbd, keycode, scancode & 0x80,
&state->ks_state, &state->ks_accents);
if (action == NOKEY)
goto next_code;
else
return action;
}
/* check if char is waiting */
static int
atkbd_check_char(keyboard_t *kbd)
{
atkbd_state_t *state;
if (!KBD_IS_ACTIVE(kbd))
return FALSE;
state = (atkbd_state_t *)kbd->kb_data;
if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0))
return TRUE;
return kbdc_data_ready(state->kbdc);
}
/* some useful control functions */
static int
atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
{
/* trasnlate LED_XXX bits into the device specific bits */
static u_char ledmap[8] = {
0, 4, 2, 6, 1, 5, 3, 7,
};
atkbd_state_t *state = kbd->kb_data;
int error;
int s;
int i;
s = spltty();
switch (cmd) {
case KDGKBMODE: /* get keyboard mode */
*(int *)arg = state->ks_mode;
break;
case KDSKBMODE: /* set keyboard mode */
switch (*(int *)arg) {
case K_XLATE:
if (state->ks_mode != K_XLATE) {
/* make lock key state and LED state match */
state->ks_state &= ~LOCK_MASK;
state->ks_state |= KBD_LED_VAL(kbd);
}
/* FALL THROUGH */
case K_RAW:
case K_CODE:
if (state->ks_mode != *(int *)arg) {
atkbd_clear_state(kbd);
state->ks_mode = *(int *)arg;
}
break;
default:
splx(s);
return EINVAL;
}
break;
case KDGETLED: /* get keyboard LED */
*(int *)arg = KBD_LED_VAL(kbd);
break;
case KDSETLED: /* set keyboard LED */
/* NOTE: lock key state in ks_state won't be changed */
if (*(int *)arg & ~LOCK_MASK) {
splx(s);
return EINVAL;
}
i = *(int *)arg;
/* replace CAPS LED with ALTGR LED for ALTGR keyboards */
if (kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
if (i & ALKED)
i |= CLKED;
else
i &= ~CLKED;
}
if (KBD_HAS_DEVICE(kbd)) {
error = write_kbd(state->kbdc, KBDC_SET_LEDS,
ledmap[i & LED_MASK]);
if (error) {
splx(s);
return error;
}
}
KBD_LED_VAL(kbd) = *(int *)arg;
break;
case KDGKBSTATE: /* get lock key state */
*(int *)arg = state->ks_state & LOCK_MASK;
break;
case KDSKBSTATE: /* set lock key state */
if (*(int *)arg & ~LOCK_MASK) {
splx(s);
return EINVAL;
}
state->ks_state &= ~LOCK_MASK;
state->ks_state |= *(int *)arg;
splx(s);
/* set LEDs and quit */
return atkbd_ioctl(kbd, KDSETLED, arg);
case KDSETREPEAT: /* set keyboard repeat rate (new interface) */
splx(s);
if (!KBD_HAS_DEVICE(kbd))
return 0;
i = typematic(((int *)arg)[0], ((int *)arg)[1]);
return write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i);
case KDSETRAD: /* set keyboard repeat rate (old interface) */
splx(s);
if (!KBD_HAS_DEVICE(kbd))
return 0;
return write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg);
case PIO_KEYMAP: /* set keyboard translation table */
case PIO_KEYMAPENT: /* set keyboard translation table entry */
case PIO_DEADKEYMAP: /* set accent key translation table */
state->ks_accents = 0;
/* FALL THROUGH */
default:
splx(s);
return genkbd_commonioctl(kbd, cmd, arg);
}
splx(s);
return 0;
}
/* lock the access to the keyboard */
static int
atkbd_lock(keyboard_t *kbd, int lock)
{
return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock);
}
/* clear the internal state of the keyboard */
static void
atkbd_clear_state(keyboard_t *kbd)
{
atkbd_state_t *state;
state = (atkbd_state_t *)kbd->kb_data;
state->ks_flags = 0;
state->ks_polling = 0;
state->ks_state &= LOCK_MASK; /* preserve locking key state */
state->ks_accents = 0;
state->ks_composed_char = 0;
#if 0
state->ks_prefix = 0; /* XXX */
#endif
}
/* save the internal state */
static int
atkbd_get_state(keyboard_t *kbd, void *buf, size_t len)
{
if (len == 0)
return sizeof(atkbd_state_t);
if (len < sizeof(atkbd_state_t))
return -1;
bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t));
return 0;
}
/* set the internal state */
static int
atkbd_set_state(keyboard_t *kbd, void *buf, size_t len)
{
if (len < sizeof(atkbd_state_t))
return ENOMEM;
if (((atkbd_state_t *)kbd->kb_data)->kbdc
!= ((atkbd_state_t *)buf)->kbdc)
return ENOMEM;
bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t));
return 0;
}
static int
atkbd_poll(keyboard_t *kbd, int on)
{
atkbd_state_t *state;
int s;
state = (atkbd_state_t *)kbd->kb_data;
s = spltty();
if (on)
++state->ks_polling;
else
--state->ks_polling;
splx(s);
return 0;
}
/* local functions */
static int
setup_kbd_port(KBDC kbdc, int port, int intr)
{
if (!set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS,
((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT)
| ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT)))
return 1;
return 0;
}
static int
get_kbd_echo(KBDC kbdc)
{
/* enable the keyboard port, but disable the keyboard intr. */
if (setup_kbd_port(kbdc, TRUE, FALSE))
/* CONTROLLER ERROR: there is very little we can do... */
return ENXIO;
/* see if something is present */
write_kbd_command(kbdc, KBDC_ECHO);
if (read_kbd_data(kbdc) != KBD_ECHO) {
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
return ENXIO;
}
/* enable the keyboard port and intr. */
if (setup_kbd_port(kbdc, TRUE, TRUE)) {
/*
* CONTROLLER ERROR
* This is serious; the keyboard intr is left disabled!
*/
return ENXIO;
}
return 0;
}
static int
probe_keyboard(KBDC kbdc, int flags)
{
/*
* Don't try to print anything in this function. The low-level
* console may not have been initialized yet...
*/
int err;
int c;
int m;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return ENXIO;
}
/* flush any noise in the buffer */
empty_both_buffers(kbdc, 10);
/* save the current keyboard controller command byte */
m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS;
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_set_device_mask(kbdc, m);
kbdc_lock(kbdc, FALSE);
return ENXIO;
}
/*
* The keyboard may have been screwed up by the boot block.
* We may just be able to recover from error by testing the controller
* and the keyboard port. The controller command byte needs to be
* saved before this recovery operation, as some controllers seem
* to set the command byte to particular values.
*/
test_controller(kbdc);
test_kbd_port(kbdc);
err = get_kbd_echo(kbdc);
if (err == 0) {
kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS);
} else {
if (c != -1)
/* try to restore the command byte as before */
set_controller_command_byte(kbdc, 0xff, c);
kbdc_set_device_mask(kbdc, m);
}
kbdc_lock(kbdc, FALSE);
return err;
}
static int
init_keyboard(KBDC kbdc, int *type, int flags)
{
int codeset;
int id;
int c;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return EIO;
}
/* save the current controller command byte */
empty_both_buffers(kbdc, 10);
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to get the current command byte value.\n");
return EIO;
}
if (bootverbose)
printf("atkbd: the current kbd controller command byte %04x\n",
c);
#if 0
/* override the keyboard lock switch */
c |= KBD_OVERRIDE_KBD_LOCK;
#endif
/* enable the keyboard port, but disable the keyboard intr. */
if (setup_kbd_port(kbdc, TRUE, FALSE)) {
/* CONTROLLER ERROR: there is very little we can do... */
printf("atkbd: unable to set the command byte.\n");
kbdc_lock(kbdc, FALSE);
return EIO;
}
/*
* Check if we have an XT keyboard before we attempt to reset it.
* The procedure assumes that the keyboard and the controller have
* been set up properly by BIOS and have not been messed up
* during the boot process.
*/
codeset = -1;
if (flags & KB_CONF_ALT_SCANCODESET)
/* the user says there is a XT keyboard */
codeset = 1;
#ifdef KBD_DETECT_XT_KEYBOARD
else if ((c & KBD_TRANSLATION) == 0) {
/* SET_SCANCODE_SET is not always supported; ignore error */
if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0)
== KBD_ACK)
codeset = read_kbd_data(kbdc);
}
if (bootverbose)
printf("atkbd: scancode set %d\n", codeset);
#endif /* KBD_DETECT_XT_KEYBOARD */
*type = KB_OTHER;
id = get_kbd_id(kbdc);
switch(id) {
case 0x41ab:
case 0x83ab:
*type = KB_101;
break;
case -1: /* AT 84 keyboard doesn't return ID */
*type = KB_84;
break;
default:
break;
}
if (bootverbose)
printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type);
/* reset keyboard hardware */
if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) {
/*
* KEYBOARD ERROR
* Keyboard reset may fail either because the keyboard
* doen't exist, or because the keyboard doesn't pass
* the self-test, or the keyboard controller on the
* motherboard and the keyboard somehow fail to shake hands.
* It is just possible, particularly in the last case,
* that the keyoard controller may be left in a hung state.
* test_controller() and test_kbd_port() appear to bring
* the keyboard controller back (I don't know why and how,
* though.)
*/
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
/*
* We could disable the keyboard port and interrupt... but,
* the keyboard may still exist (see above).
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
if (bootverbose)
printf("atkbd: failed to reset the keyboard.\n");
return EIO;
}
/*
* Allow us to set the XT_KEYBD flag in UserConfig so that keyboards
* such as those on the IBM ThinkPad laptop computers can be used
* with the standard console driver.
*/
if (codeset == 1) {
if (send_kbd_command_and_data(kbdc,
KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
/* XT kbd doesn't need scan code translation */
c &= ~KBD_TRANSLATION;
} else {
/*
* KEYBOARD ERROR
* The XT kbd isn't usable unless the proper scan
* code set is selected.
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to set the XT keyboard mode.\n");
return EIO;
}
}
#ifdef __alpha__
if (send_kbd_command_and_data(
kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) {
printf("atkbd: can't set translation.\n");
}
c |= KBD_TRANSLATION;
#endif
/* enable the keyboard port and intr. */
if (!set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK,
(c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
| KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) {
/*
* CONTROLLER ERROR
* This is serious; we are left with the disabled
* keyboard intr.
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to enable the keyboard port and intr.\n");
return EIO;
}
kbdc_lock(kbdc, FALSE);
return 0;
}
static int
write_kbd(KBDC kbdc, int command, int data)
{
int s;
/* prevent the timeout routine from polling the keyboard */
if (!kbdc_lock(kbdc, TRUE))
return EBUSY;
/* disable the keyboard and mouse interrupt */
s = spltty();
#if 0
c = get_controller_command_byte(kbdc);
if ((c == -1)
|| !set_controller_command_byte(kbdc,
kbdc_get_device_mask(kbdc),
KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
| KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/* CONTROLLER ERROR */
kbdc_lock(kbdc, FALSE);
splx(s);
return EIO;
}
/*
* Now that the keyboard controller is told not to generate
* the keyboard and mouse interrupts, call `splx()' to allow
* the other tty interrupts. The clock interrupt may also occur,
* but the timeout routine (`scrn_timer()') will be blocked
* by the lock flag set via `kbdc_lock()'
*/
splx(s);
#endif
if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK)
send_kbd_command(kbdc, KBDC_ENABLE_KBD);
#if 0
/* restore the interrupts */
if (!set_controller_command_byte(kbdc,
kbdc_get_device_mask(kbdc),
c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) {
/* CONTROLLER ERROR */
}
#else
splx(s);
#endif
kbdc_lock(kbdc, FALSE);
return 0;
}
static int
get_kbd_id(KBDC kbdc)
{
int id1, id2;
empty_both_buffers(kbdc, 10);
id1 = id2 = -1;
if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK)
return -1;
DELAY(10000); /* 10 msec delay */
id1 = read_kbd_data(kbdc);
if (id1 != -1)
id2 = read_kbd_data(kbdc);
if ((id1 == -1) || (id2 == -1)) {
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
return -1;
}
return ((id2 << 8) | id1);
}
static int
typematic(int delay, int rate)
{
static int delays[] = { 250, 500, 750, 1000 };
static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63,
68, 76, 84, 92, 100, 110, 118, 126,
136, 152, 168, 184, 200, 220, 236, 252,
272, 304, 336, 368, 400, 440, 472, 504 };
int value;
int i;
for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) {
if (delay >= delays[i])
break;
}
value = i << 5;
for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) {
if (rate >= rates[i])
break;
}
value |= i;
return value;
}
#endif /* NATKBD > 0 */
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