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Code Issues Releases Activity
a42377eaa1
freebsd/sys/dev/kbd/kbd.c
Poul-Henning Kamp 2447bec829 Simplify cdevsw registration. 
The cdevsw_add() function now finds the major number(s) in the
struct cdevsw passed to it.  cdevsw_add_generic() is no longer
needed, cdevsw_add() does the same thing.

cdevsw_add() will print an message if the d_maj field looks bogus.

Remove nblkdev and nchrdev variables.  Most places they were used
bogusly.  Instead check a dev_t for validity by seeing if devsw()
or bdevsw() returns NULL.

Move bdevsw() and devsw() functions to kern/kern_conf.c

Bump __FreeBSD_version to 400006

This commit removes:
        72 bogus makedev() calls
        26 bogus SYSINIT functions

if_xe.c bogusly accessed cdevsw[], author/maintainer please fix.

I4b and vinum not changed.  Patches emailed to authors.  LINT
probably broken until they catch up.
1999-05-31 11:29:30 +00:00

1245 lines
27 KiB
C
Raw Blame History

/*-
* 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: kbd.c,v 1.8 1999/05/30 16:51:31 phk Exp $
*/
#include "kbd.h"
#include "opt_kbd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/tty.h>
#include <sys/poll.h>
#include <sys/vnode.h>
#include <sys/uio.h>
#include <machine/console.h>
#include <dev/kbd/kbdreg.h>
/* local arrays */
/*
* We need at least one entry each in order to initialize a keyboard
* for the kernel console. The arrays will be increased dynamically
* when necessary.
*/
static int keyboards = 1;
static keyboard_t *kbd_ini;
static keyboard_t **keyboard = &kbd_ini;
static keyboard_switch_t *kbdsw_ini;
keyboard_switch_t **kbdsw = &kbdsw_ini;
#ifdef KBD_INSTALL_CDEV
static struct cdevsw *kbdcdevsw_ini;
static struct cdevsw **kbdcdevsw = &kbdcdevsw_ini;
#endif
#define ARRAY_DELTA 4
static int
kbd_realloc_array(void)
{
keyboard_t **new_kbd;
keyboard_switch_t **new_kbdsw;
#ifdef KBD_INSTALL_CDEV
struct cdevsw **new_cdevsw;
#endif
int newsize;
int s;
s = spltty();
newsize = ((keyboards + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA;
new_kbd = malloc(sizeof(*new_kbd)*newsize, M_DEVBUF, M_NOWAIT);
if (new_kbd == NULL) {
splx(s);
return ENOMEM;
}
new_kbdsw = malloc(sizeof(*new_kbdsw)*newsize, M_DEVBUF, M_NOWAIT);
if (new_kbdsw == NULL) {
free(new_kbd, M_DEVBUF);
splx(s);
return ENOMEM;
}
#ifdef KBD_INSTALL_CDEV
new_cdevsw = malloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF, M_NOWAIT);
if (new_cdevsw == NULL) {
free(new_kbd, M_DEVBUF);
free(new_kbdsw, M_DEVBUF);
splx(s);
return ENOMEM;
}
#endif
bzero(new_kbd, sizeof(*new_kbd)*newsize);
bzero(new_kbdsw, sizeof(*new_kbdsw)*newsize);
bcopy(keyboard, new_kbd, sizeof(*keyboard)*keyboards);
bcopy(kbdsw, new_kbdsw, sizeof(*kbdsw)*keyboards);
#ifdef KBD_INSTALL_CDEV
bzero(new_cdevsw, sizeof(*new_cdevsw)*newsize);
bcopy(kbdcdevsw, new_cdevsw, sizeof(*kbdcdevsw)*keyboards);
#endif
if (keyboards > 1) {
free(keyboard, M_DEVBUF);
free(kbdsw, M_DEVBUF);
#ifdef KBD_INSTALL_CDEV
free(kbdcdevsw, M_DEVBUF);
#endif
}
keyboard = new_kbd;
kbdsw = new_kbdsw;
#ifdef KBD_INSTALL_CDEV
kbdcdevsw = new_cdevsw;
#endif
keyboards = newsize;
splx(s);
if (bootverbose)
printf("kbd: new array size %d\n", keyboards);
return 0;
}
/*
* Low-level keyboard driver functions
* Keyboard subdrivers, such as the AT keyboard driver and the USB keyboard
* driver, call these functions to initialize the keyboard_t structure
* and register it to the virtual keyboard driver `kbd'.
*/
/* initialize the keyboard_t structure */
void
kbd_init_struct(keyboard_t *kbd, char *name, int type, int unit, int config,
int port, int port_size)
{
kbd->kb_flags = KB_NO_DEVICE; /* device has not been found */
kbd->kb_name = name;
kbd->kb_type = type;
kbd->kb_unit = unit;
kbd->kb_config = config & ~KB_CONF_PROBE_ONLY;
kbd->kb_led = 0; /* unknown */
kbd->kb_io_base = port;
kbd->kb_io_size = port_size;
kbd->kb_data = NULL;
kbd->kb_keymap = NULL;
kbd->kb_accentmap = NULL;
kbd->kb_fkeytab = NULL;
kbd->kb_fkeytab_size = 0;
kbd->kb_delay1 = KB_DELAY1; /* these values are advisory only */
kbd->kb_delay2 = KB_DELAY2;
}
void
kbd_set_maps(keyboard_t *kbd, keymap_t *keymap, accentmap_t *accmap,
fkeytab_t *fkeymap, int fkeymap_size)
{
kbd->kb_keymap = keymap;
kbd->kb_accentmap = accmap;
kbd->kb_fkeytab = fkeymap;
kbd->kb_fkeytab_size = fkeymap_size;
}
/* register a keyboard and associate it with a function table */
int
kbd_register(keyboard_t *kbd)
{
const keyboard_driver_t **list;
const keyboard_driver_t *p;
int index;
for (index = 0; index < keyboards; ++index) {
if (keyboard[index] == NULL)
break;
}
if (index >= keyboards) {
if (kbd_realloc_array())
return -1;
}
kbd->kb_index = index;
KBD_UNBUSY(kbd);
KBD_VALID(kbd);
kbd->kb_active = 0; /* disabled until someone calls kbd_enable() */
kbd->kb_token = NULL;
kbd->kb_callback.kc_func = NULL;
kbd->kb_callback.kc_arg = NULL;
list = (const keyboard_driver_t **)kbddriver_set.ls_items;
while ((p = *list++) != NULL) {
if (strcmp(p->name, kbd->kb_name) == 0) {
keyboard[index] = kbd;
kbdsw[index] = p->kbdsw;
return index;
}
}
return -1;
}
int
kbd_unregister(keyboard_t *kbd)
{
int error;
int s;
if ((kbd->kb_index < 0) || (kbd->kb_index >= keyboards))
return ENOENT;
if (keyboard[kbd->kb_index] != kbd)
return ENOENT;
s = spltty();
if (KBD_IS_BUSY(kbd)) {
error = (*kbd->kb_callback.kc_func)(kbd, KBDIO_UNLOADING,
kbd->kb_callback.kc_arg);
if (error) {
splx(s);
return error;
}
if (KBD_IS_BUSY(kbd)) {
splx(s);
return EBUSY;
}
}
KBD_INVALID(kbd);
keyboard[kbd->kb_index] = NULL;
kbdsw[kbd->kb_index] = NULL;
splx(s);
return 0;
}
/* find a funciton table by the driver name */
keyboard_switch_t
*kbd_get_switch(char *driver)
{
const keyboard_driver_t **list;
const keyboard_driver_t *p;
list = (const keyboard_driver_t **)kbddriver_set.ls_items;
while ((p = *list++) != NULL) {
if (strcmp(p->name, driver) == 0)
return p->kbdsw;
}
return NULL;
}
/*
* Keyboard client functions
* Keyboard clients, such as the console driver `syscons' and the keyboard
* cdev driver, use these functions to claim and release a keyboard for
* exclusive use.
*/
/* find the keyboard specified by a driver name and a unit number */
int
kbd_find_keyboard(char *driver, int unit)
{
int i;
for (i = 0; i < keyboards; ++i) {
if (keyboard[i] == NULL)
continue;
if (!KBD_IS_VALID(keyboard[i]))
continue;
if (strcmp("*", driver) && strcmp(keyboard[i]->kb_name, driver))
continue;
if ((unit != -1) && (keyboard[i]->kb_unit != unit))
continue;
return i;
}
return -1;
}
/* allocate a keyboard */
int
kbd_allocate(char *driver, int unit, void *id, kbd_callback_func_t *func,
void *arg)
{
int index;
int s;
if (func == NULL)
return -1;
s = spltty();
index = kbd_find_keyboard(driver, unit);
if (index >= 0) {
if (KBD_IS_BUSY(keyboard[index])) {
splx(s);
return -1;
}
keyboard[index]->kb_token = id;
KBD_BUSY(keyboard[index]);
keyboard[index]->kb_callback.kc_func = func;
keyboard[index]->kb_callback.kc_arg = arg;
(*kbdsw[index]->clear_state)(keyboard[index]);
}
splx(s);
return index;
}
int
kbd_release(keyboard_t *kbd, void *id)
{
int error;
int s;
s = spltty();
if (!KBD_IS_VALID(kbd) || !KBD_IS_BUSY(kbd)) {
error = EINVAL;
} else if (kbd->kb_token != id) {
error = EPERM;
} else {
kbd->kb_token = NULL;
KBD_UNBUSY(kbd);
kbd->kb_callback.kc_func = NULL;
kbd->kb_callback.kc_arg = NULL;
(*kbdsw[kbd->kb_index]->clear_state)(kbd);
error = 0;
}
splx(s);
return error;
}
int
kbd_change_callback(keyboard_t *kbd, void *id, kbd_callback_func_t *func,
void *arg)
{
int error;
int s;
s = spltty();
if (!KBD_IS_VALID(kbd) || !KBD_IS_BUSY(kbd)) {
error = EINVAL;
} else if (kbd->kb_token != id) {
error = EPERM;
} else if (func == NULL) {
error = EINVAL;
} else {
kbd->kb_callback.kc_func = func;
kbd->kb_callback.kc_arg = arg;
error = 0;
}
splx(s);
return error;
}
/* get a keyboard structure */
keyboard_t
*kbd_get_keyboard(int index)
{
if ((index < 0) || (index >= keyboards))
return NULL;
if (!KBD_IS_VALID(keyboard[index]))
return NULL;
return keyboard[index];
}
/*
* The back door for the console driver; configure keyboards
* This function is for the kernel console to initialize keyboards
* at very early stage.
*/
int
kbd_configure(int flags)
{
const keyboard_driver_t **list;
const keyboard_driver_t *p;
list = (const keyboard_driver_t **)kbddriver_set.ls_items;
while ((p = *list++) != NULL) {
if (p->configure != NULL)
(*p->configure)(flags);
}
return 0;
}
#ifdef KBD_INSTALL_CDEV
/*
* Virtual keyboard cdev driver functions
* The virtual keyboard driver dispatches driver functions to
* appropriate subdrivers.
*/
#define KBD_UNIT(dev) minor(dev)
static d_open_t kbdopen;
static d_close_t kbdclose;
static d_read_t kbdread;
static d_write_t kbdwrite;
static d_ioctl_t kbdioctl;
static d_devtotty_t kbddevtotty;
static d_poll_t kbdpoll;
static d_mmap_t kbdmmap;
#define CDEV_MAJOR 112
static struct cdevsw kbd_cdevsw = {
/* open */ kbdopen,
/* close */ kbdclose,
/* read */ kbdread,
/* write */ kbdwrite,
/* ioctl */ kbdioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ kbddevtotty,
/* poll */ kbdpoll,
/* mmap */ kbdmmap,
/* strategy */ nostrategy,
/* name */ "kbd",
/* parms */ noparms,
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* maxio */ 0,
/* bmaj */ -1
};
static void
vkbdattach(void *arg)
{
static int kbd_devsw_installed = FALSE;
if (!kbd_devsw_installed) {
cdevsw_add(&kbd_cdevsw);
kbd_devsw_installed = TRUE;
}
}
PSEUDO_SET(vkbdattach, kbd);
int
kbd_attach(dev_t dev, keyboard_t *kbd, struct cdevsw *cdevsw)
{
int s;
if (kbd->kb_index >= keyboards)
return EINVAL;
if (keyboard[kbd->kb_index] != kbd)
return EINVAL;
s = spltty();
kbd->kb_minor = minor(dev);
kbdcdevsw[kbd->kb_index] = cdevsw;
splx(s);
/* XXX: DEVFS? */
printf("kbd%d at %s%d\n", kbd->kb_index, kbd->kb_name, kbd->kb_unit);
return 0;
}
int
kbd_detach(dev_t dev, keyboard_t *kbd, struct cdevsw *cdevsw)
{
int s;
if (kbd->kb_index >= keyboards)
return EINVAL;
if (keyboard[kbd->kb_index] != kbd)
return EINVAL;
if (kbdcdevsw[kbd->kb_index] != cdevsw)
return EINVAL;
s = spltty();
kbdcdevsw[kbd->kb_index] = NULL;
splx(s);
return 0;
}
static int
kbdopen(dev_t dev, int flag, int mode, struct proc *p)
{
int unit;
unit = KBD_UNIT(dev);
if (unit >= keyboards)
return ENXIO;
if (kbdcdevsw[unit] == NULL)
return ENXIO;
if (KBD_IS_BUSY(keyboard[unit]))
return EBUSY;
return (*kbdcdevsw[unit]->d_open)(makedev(0, keyboard[unit]->kb_minor),
flag, mode, p);
}
static int
kbdclose(dev_t dev, int flag, int mode, struct proc *p)
{
int unit;
unit = KBD_UNIT(dev);
if (kbdcdevsw[unit] == NULL)
return ENXIO;
return (*kbdcdevsw[unit]->d_close)(makedev(0, keyboard[unit]->kb_minor),
flag, mode, p);
}
static int
kbdread(dev_t dev, struct uio *uio, int flag)
{
int unit;
unit = KBD_UNIT(dev);
if (kbdcdevsw[unit] == NULL)
return ENXIO;
return (*kbdcdevsw[unit]->d_read)(makedev(0, keyboard[unit]->kb_minor),
uio, flag);
}
static int
kbdwrite(dev_t dev, struct uio *uio, int flag)
{
int unit;
unit = KBD_UNIT(dev);
if (kbdcdevsw[unit] == NULL)
return ENXIO;
return (*kbdcdevsw[unit]->d_write)(makedev(0, keyboard[unit]->kb_minor),
uio, flag);
}
static int
kbdioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p)
{
int unit;
unit = KBD_UNIT(dev);
if (kbdcdevsw[unit] == NULL)
return ENXIO;
return (*kbdcdevsw[unit]->d_ioctl)(makedev(0, keyboard[unit]->kb_minor),
cmd, arg, flag, p);
}
static struct tty
*kbddevtotty(dev_t dev)
{
int unit;
unit = KBD_UNIT(dev);
if (kbdcdevsw[unit] == NULL)
return NULL;
return (*kbdcdevsw[unit]->d_devtotty)(makedev(0, keyboard[unit]->kb_minor));
}
static int
kbdpoll(dev_t dev, int event, struct proc *p)
{
int unit;
unit = KBD_UNIT(dev);
if (kbdcdevsw[unit] == NULL)
return ENXIO;
return (*kbdcdevsw[unit]->d_poll)(makedev(0, keyboard[unit]->kb_minor),
event, p);
}
static int
kbdmmap(dev_t dev, vm_offset_t offset, int nprot)
{
int unit;
unit = KBD_UNIT(dev);
if (kbdcdevsw[unit] == NULL)
return ENXIO;
return (*kbdcdevsw[unit]->d_mmap)(makedev(0, keyboard[unit]->kb_minor),
offset, nprot);
}
/*
* Generic keyboard cdev driver functions
* Keyboard subdrivers may call these functions to implement common
* driver functions.
*/
#define KB_QSIZE 512
#define KB_BUFSIZE 64
static kbd_callback_func_t genkbd_event;
int
genkbdopen(genkbd_softc_t *sc, keyboard_t *kbd, int mode, int flag,
struct proc *p)
{
int s;
int i;
s = spltty();
if (!KBD_IS_VALID(kbd)) {
splx(s);
return ENXIO;
}
i = kbd_allocate(kbd->kb_name, kbd->kb_unit, sc,
genkbd_event, (void *)sc);
if (i < 0) {
splx(s);
return EBUSY;
}
/* assert(i == kbd->kb_index) */
/* assert(kbd == kbd_get_keyboard(i)) */
/*
* NOTE: even when we have successfully claimed a keyboard,
* the device may still be missing (!KBD_HAS_DEVICE(kbd)).
*/
#if 0
bzero(&sc->gkb_q, sizeof(sc->gkb_q));
#endif
clist_alloc_cblocks(&sc->gkb_q, KB_QSIZE, KB_QSIZE/2); /* XXX */
sc->gkb_rsel.si_flags = 0;
sc->gkb_rsel.si_pid = 0;
splx(s);
return 0;
}
int
genkbdclose(genkbd_softc_t *sc, keyboard_t *kbd, int mode, int flag,
struct proc *p)
{
int s;
/*
* NOTE: the device may have already become invalid.
* !KBD_IS_VALID(kbd)
*/
s = spltty();
kbd_release(kbd, (void *)sc);
#if 0
clist_free_cblocks(&sc->gkb_q);
#endif
splx(s);
return 0;
}
int
genkbdread(genkbd_softc_t *sc, keyboard_t *kbd, struct uio *uio, int flag)
{
u_char buffer[KB_BUFSIZE];
int len;
int error;
int s;
/* wait for input */
s = spltty();
while (sc->gkb_q.c_cc == 0) {
if (!KBD_IS_VALID(kbd)) {
splx(s);
return EIO;
}
if (flag & IO_NDELAY) {
splx(s);
return EWOULDBLOCK;
}
sc->gkb_flags |= KB_ASLEEP;
error = tsleep((caddr_t)sc, PZERO | PCATCH, "kbdrea", 0);
if (error) {
sc->gkb_flags &= ~KB_ASLEEP;
splx(s);
return error;
}
}
splx(s);
/* copy as much input as possible */
error = 0;
while (uio->uio_resid > 0) {
len = imin(uio->uio_resid, sizeof(buffer));
len = q_to_b(&sc->gkb_q, buffer, len);
if (len <= 0)
break;
error = uiomove(buffer, len, uio);
if (error)
break;
}
return error;
}
int
genkbdwrite(genkbd_softc_t *sc, keyboard_t *kbd, struct uio *uio, int flag)
{
if (!KBD_IS_VALID(kbd))
return ENXIO;
return ENODEV;
}
int
genkbdioctl(genkbd_softc_t *sc, keyboard_t *kbd, u_long cmd, caddr_t arg,
int flag, struct proc *p)
{
int error;
if (kbd == NULL) /* XXX */
return ENXIO;
if (!KBD_IS_VALID(kbd))
return ENXIO;
error = (*kbdsw[kbd->kb_index]->ioctl)(kbd, cmd, arg);
if (error == ENOIOCTL)
error = ENODEV;
return error;
}
int
genkbdpoll(genkbd_softc_t *sc, keyboard_t *kbd, int events, struct proc *p)
{
int revents;
int s;
revents = 0;
s = spltty();
if (events & (POLLIN | POLLRDNORM)) {
if ((sc->gkb_q.c_cc > 0) || !KBD_IS_VALID(kbd))
revents |= (POLLIN | POLLRDNORM);
else
selrecord(p, &sc->gkb_rsel);
}
splx(s);
return revents;
}
static int
genkbd_event(keyboard_t *kbd, int event, void *arg)
{
genkbd_softc_t *sc;
size_t len;
u_char *cp;
int mode;
int c;
/* assert(KBD_IS_VALID(kbd)) */
sc = (genkbd_softc_t *)arg;
switch (event) {
case KBDIO_KEYINPUT:
break;
case KBDIO_UNLOADING:
/* the keyboard is going... */
kbd_release(kbd, (void *)sc);
return 0;
default:
return EINVAL;
}
/* obtain the current key input mode */
if ((*kbdsw[kbd->kb_index]->ioctl)(kbd, KDGKBMODE, (caddr_t)&mode))
mode = K_XLATE;
/* read all pending input */
while ((*kbdsw[kbd->kb_index]->check_char)(kbd)) {
c = (*kbdsw[kbd->kb_index]->read_char)(kbd, FALSE);
if (c == NOKEY)
continue;
if (c == ERRKEY) /* XXX: ring bell? */
continue;
if (!KBD_IS_BUSY(kbd))
/* the device is not open, discard the input */
continue;
/* store the byte as is for K_RAW and K_CODE modes */
if (mode != K_XLATE) {
putc(KEYCHAR(c), &sc->gkb_q);
continue;
}
/* K_XLATE */
if (c & RELKEY) /* key release is ignored */
continue;
/* process special keys; most of them are just ignored... */
if (c & SPCLKEY) {
switch (KEYCHAR(c)) {
/* locking keys */
case NLK: case CLK: case SLK: case ALK:
/* shift keys */
case LSH: case RSH: case LCTR: case RCTR:
case LALT: case RALT: case ASH: case META:
/* other special keys */
case NOP: case SPSC: case RBT: case SUSP:
case STBY: case DBG: case NEXT:
/* ignore them... */
continue;
case BTAB: /* a backtab: ESC [ Z */
putc(0x1b, &sc->gkb_q);
putc('[', &sc->gkb_q);
putc('Z', &sc->gkb_q);
continue;
}
}
/* normal chars, normal chars with the META, function keys */
switch (KEYFLAGS(c)) {
case 0: /* a normal char */
putc(KEYCHAR(c), &sc->gkb_q);
break;
case MKEY: /* the META flag: prepend ESC */
putc(0x1b, &sc->gkb_q);
putc(KEYCHAR(c), &sc->gkb_q);
break;
case FKEY | SPCLKEY: /* a function key, return string */
cp = (*kbdsw[kbd->kb_index]->get_fkeystr)(kbd,
KEYCHAR(c), &len);
if (cp != NULL) {
while (len-- > 0)
putc(*cp++, &sc->gkb_q);
}
break;
}
}
/* wake up sleeping/polling processes */
if (sc->gkb_q.c_cc > 0) {
if (sc->gkb_flags & KB_ASLEEP) {
sc->gkb_flags &= ~KB_ASLEEP;
wakeup((caddr_t)sc);
}
selwakeup(&sc->gkb_rsel);
}
return 0;
}
#endif /* KBD_INSTALL_CDEV */
/*
* Generic low-level keyboard functions
* The low-level functions in the keyboard subdriver may use these
* functions.
*/
int
genkbd_commonioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
{
keyarg_t *keyp;
fkeyarg_t *fkeyp;
int s;
int i;
s = spltty();
switch (cmd) {
case KDGKBINFO: /* get keyboard information */
((keyboard_info_t *)arg)->kb_index = kbd->kb_index;
i = imin(strlen(kbd->kb_name) + 1,
sizeof(((keyboard_info_t *)arg)->kb_name));
bcopy(kbd->kb_name, ((keyboard_info_t *)arg)->kb_name, i);
((keyboard_info_t *)arg)->kb_unit = kbd->kb_unit;
((keyboard_info_t *)arg)->kb_type = kbd->kb_type;
((keyboard_info_t *)arg)->kb_config = kbd->kb_config;
((keyboard_info_t *)arg)->kb_flags = kbd->kb_flags;
break;
case KDGKBTYPE: /* get keyboard type */
*(int *)arg = kbd->kb_type;
break;
case GIO_KEYMAP: /* get keyboard translation table */
bcopy(kbd->kb_keymap, arg, sizeof(*kbd->kb_keymap));
break;
case PIO_KEYMAP: /* set keyboard translation table */
#ifndef KBD_DISABLE_KEYMAP_LOAD
bzero(kbd->kb_accentmap, sizeof(*kbd->kb_accentmap));
bcopy(arg, kbd->kb_keymap, sizeof(*kbd->kb_keymap));
break;
#else
splx(s);
return ENODEV;
#endif
case GIO_KEYMAPENT: /* get keyboard translation table entry */
keyp = (keyarg_t *)arg;
if (keyp->keynum >= sizeof(kbd->kb_keymap->key)
/sizeof(kbd->kb_keymap->key[0])) {
splx(s);
return EINVAL;
}
bcopy(&kbd->kb_keymap->key[keyp->keynum], &keyp->key,
sizeof(keyp->key));
break;
case PIO_KEYMAPENT: /* set keyboard translation table entry */
#ifndef KBD_DISABLE_KEYMAP_LOAD
keyp = (keyarg_t *)arg;
if (keyp->keynum >= sizeof(kbd->kb_keymap->key)
/sizeof(kbd->kb_keymap->key[0])) {
splx(s);
return EINVAL;
}
bcopy(&keyp->key, &kbd->kb_keymap->key[keyp->keynum],
sizeof(keyp->key));
break;
#else
splx(s);
return ENODEV;
#endif
case GIO_DEADKEYMAP: /* get accent key translation table */
bcopy(kbd->kb_accentmap, arg, sizeof(*kbd->kb_accentmap));
break;
case PIO_DEADKEYMAP: /* set accent key translation table */
#ifndef KBD_DISABLE_KEYMAP_LOAD
bcopy(arg, kbd->kb_accentmap, sizeof(*kbd->kb_accentmap));
break;
#else
splx(s);
return ENODEV;
#endif
case GETFKEY: /* get functionkey string */
fkeyp = (fkeyarg_t *)arg;
if (fkeyp->keynum >= kbd->kb_fkeytab_size) {
splx(s);
return EINVAL;
}
bcopy(kbd->kb_fkeytab[fkeyp->keynum].str, fkeyp->keydef,
kbd->kb_fkeytab[fkeyp->keynum].len);
fkeyp->flen = kbd->kb_fkeytab[fkeyp->keynum].len;
break;
case SETFKEY: /* set functionkey string */
#ifndef KBD_DISABLE_KEYMAP_LOAD
fkeyp = (fkeyarg_t *)arg;
if (fkeyp->keynum >= kbd->kb_fkeytab_size) {
splx(s);
return EINVAL;
}
kbd->kb_fkeytab[fkeyp->keynum].len = imin(fkeyp->flen, MAXFK);
bcopy(fkeyp->keydef, kbd->kb_fkeytab[fkeyp->keynum].str,
kbd->kb_fkeytab[fkeyp->keynum].len);
break;
#else
splx(s);
return ENODEV;
#endif
default:
splx(s);
return ENOIOCTL;
}
splx(s);
return 0;
}
/* get a pointer to the string associated with the given function key */
u_char
*genkbd_get_fkeystr(keyboard_t *kbd, int fkey, size_t *len)
{
if (kbd == NULL)
return NULL;
fkey -= F_FN;
if (fkey > kbd->kb_fkeytab_size)
return NULL;
*len = kbd->kb_fkeytab[fkey].len;
return kbd->kb_fkeytab[fkey].str;
}
/* diagnostic dump */
static char
*get_kbd_type_name(int type)
{
static struct {
int type;
char *name;
} name_table[] = {
{ KB_84, "AT 84" },
{ KB_101, "AT 101/102" },
{ KB_OTHER, "generic" },
};
int i;
for (i = 0; i < sizeof(name_table)/sizeof(name_table[0]); ++i) {
if (type == name_table[i].type)
return name_table[i].name;
}
return "unknown";
}
void
genkbd_diag(keyboard_t *kbd, int level)
{
if (level > 0) {
printf("kbd%d: %s%d, %s (%d), config:0x%x, flags:0x%x",
kbd->kb_index, kbd->kb_name, kbd->kb_unit,
get_kbd_type_name(kbd->kb_type), kbd->kb_type,
kbd->kb_config, kbd->kb_flags);
if (kbd->kb_io_base > 0)
printf(", port:0x%x-0x%x", kbd->kb_io_base,
kbd->kb_io_base + kbd->kb_io_size - 1);
printf("\n");
}
}
#define set_lockkey_state(k, s, l) \
if (!((s) & l ## DOWN)) { \
int i; \
(s) |= l ## DOWN; \
(s) ^= l ## ED; \
i = (s) & LOCK_MASK; \
(*kbdsw[(k)->kb_index]->ioctl)((k), KDSETLED, (caddr_t)&i); \
}
static u_int
save_accent_key(keyboard_t *kbd, u_int key, int *accents)
{
int i;
/* make an index into the accent map */
i = key - F_ACC + 1;
if ((i > kbd->kb_accentmap->n_accs)
|| (kbd->kb_accentmap->acc[i - 1].accchar == 0)) {
/* the index is out of range or pointing to an empty entry */
*accents = 0;
return ERRKEY;
}
/*
* If the same accent key has been hit twice, produce the accent char
* itself.
*/
if (i == *accents) {
key = kbd->kb_accentmap->acc[i - 1].accchar;
*accents = 0;
return key;
}
/* remember the index and wait for the next key */
*accents = i;
return NOKEY;
}
static u_int
make_accent_char(keyboard_t *kbd, u_int ch, int *accents)
{
struct acc_t *acc;
int i;
acc = &kbd->kb_accentmap->acc[*accents - 1];
*accents = 0;
/*
* If the accent key is followed by the space key,
* produce the accent char itself.
*/
if (ch == ' ')
return acc->accchar;
/* scan the accent map */
for (i = 0; i < NUM_ACCENTCHARS; ++i) {
if (acc->map[i][0] == 0) /* end of table */
break;
if (acc->map[i][0] == ch)
return acc->map[i][1];
}
/* this char cannot be accented... */
return ERRKEY;
}
int
genkbd_keyaction(keyboard_t *kbd, int keycode, int up, int *shiftstate,
int *accents)
{
struct keyent_t *key;
int state = *shiftstate;
int action;
int f;
int i;
f = state & (AGRS | ALKED);
if ((f == AGRS1) || (f == AGRS2) || (f == ALKED))
keycode += ALTGR_OFFSET;
key = &kbd->kb_keymap->key[keycode];
i = ((state & SHIFTS) ? 1 : 0)
| ((state & CTLS) ? 2 : 0)
| ((state & ALTS) ? 4 : 0);
if (((key->flgs & FLAG_LOCK_C) && (state & CLKED))
|| ((key->flgs & FLAG_LOCK_N) && (state & NLKED)) )
i ^= 1;
action = key->map[i];
if (up) { /* break: key released */
if (key->spcl & (0x80 >> i)) {
/* special keys */
switch (action) {
case LSH:
state &= ~SHIFTS1;
break;
case RSH:
state &= ~SHIFTS2;
break;
case LCTR:
state &= ~CTLS1;
break;
case RCTR:
state &= ~CTLS2;
break;
case LALT:
state &= ~ALTS1;
break;
case RALT:
state &= ~ALTS2;
break;
case ASH:
state &= ~AGRS1;
break;
case META:
state &= ~METAS1;
break;
case NLK:
state &= ~NLKDOWN;
break;
case CLK:
#ifndef PC98
state &= ~CLKDOWN;
#else
state &= ~CLKED;
i = state & LOCK_MASK;
(*kbdsw[kbd->kb_index]->ioctl)(kbd, KDSETLED,
(caddr_t)&i);
#endif
break;
case SLK:
state &= ~SLKDOWN;
break;
case ALK:
state &= ~ALKDOWN;
break;
}
*shiftstate = state;
return (SPCLKEY | RELKEY | action);
}
/* release events of regular keys are not reported */
return NOKEY;
} else { /* make: key pressed */
if (key->spcl & (0x80 >> i)) {
/* special keys */
switch (action) {
/* LOCKING KEYS */
case NLK:
set_lockkey_state(kbd, state, NLK);
break;
case CLK:
#ifndef PC98
set_lockkey_state(kbd, state, CLK);
#else
state |= CLKED;
i = state & LOCK_MASK;
(*kbdsw[kbd->kb_index]->ioctl)(kbd, KDSETLED,
(caddr_t)&i);
#endif
break;
case SLK:
set_lockkey_state(kbd, state, SLK);
break;
case ALK:
set_lockkey_state(kbd, state, ALK);
break;
/* NON-LOCKING KEYS */
case SPSC: case RBT: case SUSP: case STBY:
case DBG: case NEXT:
*accents = 0;
break;
case BTAB:
*accents = 0;
action |= BKEY;
break;
case LSH:
state |= SHIFTS1;
break;
case RSH:
state |= SHIFTS2;
break;
case LCTR:
state |= CTLS1;
break;
case RCTR:
state |= CTLS2;
break;
case LALT:
state |= ALTS1;
break;
case RALT:
state |= ALTS2;
break;
case ASH:
state |= AGRS1;
break;
case META:
state |= METAS1;
break;
default:
/* is this an accent (dead) key? */
if (action >= F_ACC && action <= L_ACC) {
action = save_accent_key(kbd, action,
accents);
switch (action) {
case NOKEY:
case ERRKEY:
return action;
default:
if (state & METAS)
return (action | MKEY);
else
return action;
}
/* NOT REACHED */
}
/* other special keys */
if (*accents > 0) {
*accents = 0;
return ERRKEY;
}
if (action >= F_FN && action <= L_FN)
action |= FKEY;
/* XXX: return fkey string for the FKEY? */
}
*shiftstate = state;
return (SPCLKEY | action);
} else {
/* regular keys */
if (*accents > 0) {
/* make an accented char */
action = make_accent_char(kbd, action, accents);
if (action == ERRKEY)
return action;
}
if (state & METAS)
action |= MKEY;
return action;
}
}
/* NOT REACHED */
}
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