4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer as
12 * the first lines of this file unmodified.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * $FreeBSD: src/sys/dev/kbd/atkbd.c,v 1.25.2.4 2002/04/08 19:21:38 asmodai Exp $
29 * $DragonFly: src/sys/dev/misc/kbd/atkbd.c,v 1.14 2007/04/22 10:43:00 y0netan1 Exp $
33 #include "opt_atkbd.h"
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/thread2.h>
44 #include <machine/md_var.h>
45 #include <machine/psl.h>
46 #include <machine/vm86.h>
47 #include <machine/pc/bios.h>
56 #include "atkbdcreg.h"
58 #include <bus/isa/isareg.h>
61 #define lwkt_gettoken(x)
62 #define lwkt_reltoken(x)
65 static timeout_t atkbd_timeout;
68 atkbd_probe_unit(int unit, int ctlr, int irq, int flags)
70 keyboard_switch_t *sw;
74 lwkt_gettoken(&tty_token);
75 sw = kbd_get_switch(ATKBD_DRIVER_NAME);
77 lwkt_reltoken(&tty_token);
83 error = (*sw->probe)(unit, args, flags);
85 lwkt_reltoken(&tty_token);
93 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags)
95 keyboard_switch_t *sw;
99 lwkt_gettoken(&tty_token);
101 sw = kbd_get_switch(ATKBD_DRIVER_NAME);
103 lwkt_reltoken(&tty_token);
107 /* reset, initialize and enable the device */
111 error = (*sw->probe)(unit, args, flags);
113 lwkt_reltoken(&tty_token);
116 error = (*sw->init)(unit, kbd, args, flags);
118 lwkt_reltoken(&tty_token);
123 #ifdef KBD_INSTALL_CDEV
124 /* attach a virtual keyboard cdev */
125 error = kbd_attach(*kbd);
127 lwkt_reltoken(&tty_token);
133 * This is a kludge to compensate for lost keyboard interrupts.
134 * A similar code used to be in syscons. See below. XXX
139 (*sw->diag)(*kbd, bootverbose);
141 lwkt_reltoken(&tty_token);
146 atkbd_timeout(void *arg)
151 * The original text of the following comments are extracted
152 * from syscons.c (1.287)
154 * With release 2.1 of the Xaccel server, the keyboard is left
155 * hanging pretty often. Apparently an interrupt from the
156 * keyboard is lost, and I don't know why (yet).
157 * This ugly hack calls the low-level interrupt routine if input
158 * is ready for the keyboard and conveniently hides the problem. XXX
160 * Try removing anything stuck in the keyboard controller; whether
161 * it's a keyboard scan code or mouse data. The low-level
162 * interrupt routine doesn't read the mouse data directly,
163 * but the keyboard controller driver will, as a side effect.
166 * And here is bde's original comment about this:
168 * This is necessary to handle edge triggered interrupts - if we
169 * returned when our IRQ is high due to unserviced input, then there
170 * would be no more keyboard IRQs until the keyboard is reset by
173 * The keyboard apparently unwedges the irq in most cases.
176 lwkt_gettoken(&tty_token);
177 kbd = (keyboard_t *)arg;
178 if (kbd_lock(kbd, TRUE)) {
180 * We have seen the lock flag is not set. Let's reset
181 * the flag early, otherwise the LED update routine fails
182 * which may want the lock during the interrupt routine.
184 kbd_lock(kbd, FALSE);
185 if (kbd_check_char(kbd))
188 callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg);
189 lwkt_reltoken(&tty_token);
195 #include <machine/limits.h>
196 #include <machine/clock.h>
198 #define ATKBD_DEFAULT 0
200 typedef struct atkbd_state {
201 KBDC kbdc; /* keyboard controller */
202 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */
203 int ks_flags; /* flags */
204 #define COMPOSE (1 << 0)
206 int ks_state; /* shift/lock key state */
207 int ks_accents; /* accent key index (> 0) */
208 u_int ks_composed_char; /* composed char code (> 0) */
209 u_char ks_prefix; /* AT scan code prefix */
212 /* keyboard driver declaration */
213 static int atkbd_configure(int flags);
214 static kbd_probe_t atkbd_probe;
215 static kbd_init_t atkbd_init;
216 static kbd_term_t atkbd_term;
217 static kbd_intr_t atkbd_intr;
218 static kbd_test_if_t atkbd_test_if;
219 static kbd_enable_t atkbd_enable;
220 static kbd_disable_t atkbd_disable;
221 static kbd_read_t atkbd_read;
222 static kbd_check_t atkbd_check;
223 static kbd_read_char_t atkbd_read_char;
224 static kbd_check_char_t atkbd_check_char;
225 static kbd_ioctl_t atkbd_ioctl;
226 static kbd_lock_t atkbd_lock;
227 static kbd_clear_state_t atkbd_clear_state;
228 static kbd_get_state_t atkbd_get_state;
229 static kbd_set_state_t atkbd_set_state;
230 static kbd_poll_mode_t atkbd_poll;
232 keyboard_switch_t atkbdsw = {
254 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure);
256 /* local functions */
257 static int get_typematic(keyboard_t *kbd);
258 static int setup_kbd_port(KBDC kbdc, int port, int intr);
259 static int get_kbd_echo(KBDC kbdc);
260 static int probe_keyboard(KBDC kbdc, int flags);
261 static int init_keyboard(KBDC kbdc, int *type, int flags);
262 static int write_kbd(KBDC kbdc, int command, int data);
263 static int get_kbd_id(KBDC kbdc);
264 static int typematic(int delay, int rate);
265 static int typematic_delay(int delay);
266 static int typematic_rate(int rate);
268 /* local variables */
270 /* the initial key map, accent map and fkey strings */
271 #ifdef ATKBD_DFLT_KEYMAP
272 #define KBD_DFLT_KEYMAP
273 #include "atkbdmap.h"
275 #include "kbdtables.h"
277 /* structures for the default keyboard */
278 static keyboard_t default_kbd;
279 static atkbd_state_t default_kbd_state;
280 static keymap_t default_keymap;
281 static accentmap_t default_accentmap;
282 static fkeytab_t default_fkeytab[NUM_FKEYS];
285 * The back door to the keyboard driver!
286 * This function is called by the console driver, via the kbdio module,
287 * to tickle keyboard drivers when the low-level console is being initialized.
288 * Almost nothing in the kernel has been initialied yet. Try to probe
289 * keyboards if possible.
290 * NOTE: because of the way the low-level console is initialized, this routine
291 * may be called more than once!!
294 atkbd_configure(int flags)
300 lwkt_gettoken(&tty_token);
303 * Probe the keyboard controller, if not present or if the driver
304 * is disabled, unregister the keyboard if any.
306 if (atkbdc_configure() != 0 ||
307 resource_disabled("atkbd", ATKBD_DEFAULT)) {
308 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT);
310 kbd = kbd_get_keyboard(i);
312 kbd->kb_flags &= ~KB_REGISTERED;
314 lwkt_reltoken(&tty_token);
318 /* XXX: a kludge to obtain the device configuration flags */
319 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0)
322 /* probe the default keyboard */
326 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) {
327 lwkt_reltoken(&tty_token);
330 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) {
331 lwkt_reltoken(&tty_token);
335 /* return the number of found keyboards */
336 lwkt_reltoken(&tty_token);
340 /* low-level functions */
342 /* detect a keyboard */
344 atkbd_probe(int unit, void *arg, int flags)
347 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */
349 lwkt_gettoken(&tty_token);
351 if (unit == ATKBD_DEFAULT) {
352 if (KBD_IS_PROBED(&default_kbd)) {
353 lwkt_reltoken(&tty_token);
358 kbdc = atkbdc_open(data[0]);
360 lwkt_reltoken(&tty_token);
363 if (probe_keyboard(kbdc, flags)) {
364 if (flags & KB_CONF_FAIL_IF_NO_KBD) {
365 lwkt_reltoken(&tty_token);
370 lwkt_reltoken(&tty_token);
374 /* reset and initialize the device */
376 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags)
379 atkbd_state_t *state;
385 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */
387 lwkt_gettoken(&tty_token);
390 if (unit == ATKBD_DEFAULT) {
391 *kbdp = kbd = &default_kbd;
392 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) {
393 lwkt_reltoken(&tty_token);
396 state = &default_kbd_state;
397 keymap = &default_keymap;
398 accmap = &default_accentmap;
399 fkeymap = default_fkeytab;
401 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]);
402 } else if (*kbdp == NULL) {
403 *kbdp = kbd = kmalloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO);
404 state = kmalloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO);
405 keymap = kmalloc(sizeof(key_map), M_DEVBUF, M_WAITOK);
406 accmap = kmalloc(sizeof(accent_map), M_DEVBUF, M_WAITOK);
407 fkeymap = kmalloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK);
408 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]);
409 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) {
410 lwkt_reltoken(&tty_token);
414 state = (atkbd_state_t *)kbd->kb_data;
415 bzero(state, sizeof(*state));
416 keymap = kbd->kb_keymap;
417 accmap = kbd->kb_accentmap;
418 fkeymap = kbd->kb_fkeytab;
419 fkeymap_size = kbd->kb_fkeytab_size;
422 if (!KBD_IS_PROBED(kbd)) {
423 state->kbdc = atkbdc_open(data[0]);
424 if (state->kbdc == NULL) {
425 lwkt_reltoken(&tty_token);
428 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags,
430 bcopy(&key_map, keymap, sizeof(key_map));
431 bcopy(&accent_map, accmap, sizeof(accent_map));
432 bcopy(fkey_tab, fkeymap,
433 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab)));
434 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size);
435 kbd->kb_data = (void *)state;
437 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */
438 if (flags & KB_CONF_FAIL_IF_NO_KBD) {
439 lwkt_reltoken(&tty_token);
443 KBD_FOUND_DEVICE(kbd);
445 atkbd_clear_state(kbd);
446 state->ks_mode = K_XLATE;
448 * FIXME: set the initial value for lock keys in ks_state
449 * according to the BIOS data?
453 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) {
454 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY;
455 if (KBD_HAS_DEVICE(kbd)
456 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config)
457 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) {
458 lwkt_reltoken(&tty_token);
461 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
463 delay[0] = kbd->kb_delay1;
464 delay[1] = kbd->kb_delay2;
465 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay);
468 if (!KBD_IS_CONFIGURED(kbd)) {
469 if (kbd_register(kbd) < 0) {
470 lwkt_reltoken(&tty_token);
473 KBD_CONFIG_DONE(kbd);
476 lwkt_reltoken(&tty_token);
480 /* finish using this keyboard */
482 atkbd_term(keyboard_t *kbd)
484 lwkt_gettoken(&tty_token);
486 lwkt_reltoken(&tty_token);
490 /* keyboard interrupt routine */
492 atkbd_intr(keyboard_t *kbd, void *arg)
494 atkbd_state_t *state;
498 lwkt_gettoken(&tty_token);
499 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) {
500 /* let the callback function to process the input */
501 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT,
502 kbd->kb_callback.kc_arg);
504 /* read and discard the input; no one is waiting for input */
506 c = atkbd_read_char(kbd, FALSE);
507 } while (c != NOKEY);
509 if (!KBD_HAS_DEVICE(kbd)) {
511 * The keyboard was not detected before;
512 * it must have been reconnected!
514 state = (atkbd_state_t *)kbd->kb_data;
515 init_keyboard(state->kbdc, &kbd->kb_type,
517 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
519 delay[0] = kbd->kb_delay1;
520 delay[1] = kbd->kb_delay2;
521 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay);
522 KBD_FOUND_DEVICE(kbd);
526 lwkt_reltoken(&tty_token);
530 /* test the interface to the device */
532 atkbd_test_if(keyboard_t *kbd)
537 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10);
539 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc))
541 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0)
549 * Enable the access to the device; until this function is called,
550 * the client cannot read from the keyboard.
553 atkbd_enable(keyboard_t *kbd)
556 lwkt_gettoken(&tty_token);
558 lwkt_reltoken(&tty_token);
563 /* disallow the access to the device */
565 atkbd_disable(keyboard_t *kbd)
568 lwkt_gettoken(&tty_token);
570 lwkt_reltoken(&tty_token);
575 /* read one byte from the keyboard if it's allowed */
577 atkbd_read(keyboard_t *kbd, int wait)
581 lwkt_gettoken(&tty_token);
583 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc);
585 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc);
589 ret = (KBD_IS_ACTIVE(kbd) ? c : -1);
591 lwkt_reltoken(&tty_token);
595 /* check if data is waiting */
597 atkbd_check(keyboard_t *kbd)
601 lwkt_gettoken(&tty_token);
603 if (!KBD_IS_ACTIVE(kbd)) {
604 lwkt_reltoken(&tty_token);
607 ret = kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc);
609 lwkt_reltoken(&tty_token);
613 /* read char from the keyboard */
615 atkbd_read_char(keyboard_t *kbd, int wait)
617 atkbd_state_t *state;
622 lwkt_gettoken(&tty_token);
623 state = (atkbd_state_t *)kbd->kb_data;
625 /* do we have a composed char to return? */
626 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {
627 action = state->ks_composed_char;
628 state->ks_composed_char = 0;
629 if (action > UCHAR_MAX) {
630 lwkt_reltoken(&tty_token);
633 lwkt_reltoken(&tty_token);
637 /* see if there is something in the keyboard port */
640 scancode = read_kbd_data(state->kbdc);
641 } while (scancode == -1);
643 scancode = read_kbd_data_no_wait(state->kbdc);
644 if (scancode == -1) {
645 lwkt_reltoken(&tty_token);
651 #if KBDIO_DEBUG >= 10
652 kprintf("atkbd_read_char(): scancode:0x%x\n", scancode);
655 /* return the byte as is for the K_RAW mode */
656 if (state->ks_mode == K_RAW) {
657 lwkt_reltoken(&tty_token);
661 /* translate the scan code into a keycode */
662 keycode = scancode & 0x7F;
663 switch (state->ks_prefix) {
664 case 0x00: /* normal scancode */
666 case 0xB8: /* left alt (compose key) released */
667 if (state->ks_flags & COMPOSE) {
668 state->ks_flags &= ~COMPOSE;
669 if (state->ks_composed_char > UCHAR_MAX)
670 state->ks_composed_char = 0;
673 case 0x38: /* left alt (compose key) pressed */
674 if (!(state->ks_flags & COMPOSE)) {
675 state->ks_flags |= COMPOSE;
676 state->ks_composed_char = 0;
681 state->ks_prefix = scancode;
685 case 0xE0: /* 0xE0 prefix */
686 state->ks_prefix = 0;
688 case 0x1C: /* right enter key */
691 case 0x1D: /* right ctrl key */
694 case 0x35: /* keypad divide key */
697 case 0x37: /* print scrn key */
700 case 0x38: /* right alt key (alt gr) */
703 case 0x46: /* ctrl-pause/break on AT 101 (see below) */
706 case 0x47: /* grey home key */
709 case 0x48: /* grey up arrow key */
712 case 0x49: /* grey page up key */
715 case 0x4B: /* grey left arrow key */
718 case 0x4D: /* grey right arrow key */
721 case 0x4F: /* grey end key */
724 case 0x50: /* grey down arrow key */
727 case 0x51: /* grey page down key */
730 case 0x52: /* grey insert key */
733 case 0x53: /* grey delete key */
736 /* the following 3 are only used on the MS "Natural" keyboard */
737 case 0x5b: /* left Window key */
740 case 0x5c: /* right Window key */
743 case 0x5d: /* menu key */
746 default: /* ignore everything else */
750 case 0xE1: /* 0xE1 prefix */
752 * The pause/break key on the 101 keyboard produces:
754 * Ctrl-pause/break produces:
755 * E0-46 E0-C6 (See above.)
757 state->ks_prefix = 0;
759 state->ks_prefix = 0x1D;
762 case 0x1D: /* pause / break */
763 state->ks_prefix = 0;
770 if (kbd->kb_type == KB_84) {
772 case 0x37: /* *(numpad)/print screen */
773 if (state->ks_flags & SHIFTS)
774 keycode = 0x5c; /* print screen */
776 case 0x45: /* num lock/pause */
777 if (state->ks_flags & CTLS)
778 keycode = 0x68; /* pause */
780 case 0x46: /* scroll lock/break */
781 if (state->ks_flags & CTLS)
782 keycode = 0x6c; /* break */
785 } else if (kbd->kb_type == KB_101) {
787 case 0x5c: /* print screen */
788 if (state->ks_flags & ALTS)
789 keycode = 0x54; /* sysrq */
791 case 0x68: /* pause/break */
792 if (state->ks_flags & CTLS)
793 keycode = 0x6c; /* break */
798 /* return the key code in the K_CODE mode */
799 if (state->ks_mode == K_CODE) {
800 lwkt_reltoken(&tty_token);
801 return (keycode | (scancode & 0x80));
804 /* compose a character code */
805 if (state->ks_flags & COMPOSE) {
806 switch (keycode | (scancode & 0x80)) {
807 /* key pressed, process it */
808 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */
809 state->ks_composed_char *= 10;
810 state->ks_composed_char += keycode - 0x40;
811 if (state->ks_composed_char > UCHAR_MAX)
814 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */
815 state->ks_composed_char *= 10;
816 state->ks_composed_char += keycode - 0x47;
817 if (state->ks_composed_char > UCHAR_MAX)
820 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */
821 state->ks_composed_char *= 10;
822 state->ks_composed_char += keycode - 0x4E;
823 if (state->ks_composed_char > UCHAR_MAX)
826 case 0x52: /* keypad 0 */
827 state->ks_composed_char *= 10;
828 if (state->ks_composed_char > UCHAR_MAX)
832 /* key released, no interest here */
833 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */
834 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */
835 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */
836 case 0xD2: /* keypad 0 */
839 case 0x38: /* left alt key */
843 if (state->ks_composed_char > 0) {
844 state->ks_flags &= ~COMPOSE;
845 state->ks_composed_char = 0;
846 lwkt_reltoken(&tty_token);
853 /* keycode to key action */
854 action = genkbd_keyaction(kbd, keycode, scancode & 0x80,
855 &state->ks_state, &state->ks_accents);
856 if (action == NOKEY) {
859 lwkt_reltoken(&tty_token);
862 lwkt_reltoken(&tty_token);
865 /* check if char is waiting */
867 atkbd_check_char(keyboard_t *kbd)
869 atkbd_state_t *state;
872 lwkt_gettoken(&tty_token);
873 if (!KBD_IS_ACTIVE(kbd)) {
874 lwkt_reltoken(&tty_token);
877 state = (atkbd_state_t *)kbd->kb_data;
878 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {
879 lwkt_reltoken(&tty_token);
882 ret = kbdc_data_ready(state->kbdc);
883 lwkt_reltoken(&tty_token);
887 /* some useful control functions */
889 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
891 /* trasnlate LED_XXX bits into the device specific bits */
892 static u_char ledmap[8] = {
893 0, 4, 2, 6, 1, 5, 3, 7,
895 atkbd_state_t *state = kbd->kb_data;
900 lwkt_gettoken(&tty_token);
904 case KDGKBMODE: /* get keyboard mode */
905 *(int *)arg = state->ks_mode;
907 case KDSKBMODE: /* set keyboard mode */
908 switch (*(int *)arg) {
910 if (state->ks_mode != K_XLATE) {
911 /* make lock key state and LED state match */
912 state->ks_state &= ~LOCK_MASK;
913 state->ks_state |= KBD_LED_VAL(kbd);
918 if (state->ks_mode != *(int *)arg) {
919 atkbd_clear_state(kbd);
920 state->ks_mode = *(int *)arg;
924 lwkt_reltoken(&tty_token);
930 case KDGETLED: /* get keyboard LED */
931 *(int *)arg = KBD_LED_VAL(kbd);
933 case KDSETLED: /* set keyboard LED */
934 /* NOTE: lock key state in ks_state won't be changed */
935 if (*(int *)arg & ~LOCK_MASK) {
936 lwkt_reltoken(&tty_token);
941 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */
942 if (state->ks_mode == K_XLATE &&
943 kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
949 if (KBD_HAS_DEVICE(kbd)) {
950 error = write_kbd(state->kbdc, KBDC_SET_LEDS,
951 ledmap[i & LED_MASK]);
953 lwkt_reltoken(&tty_token);
958 KBD_LED_VAL(kbd) = *(int *)arg;
961 case KDGKBSTATE: /* get lock key state */
962 *(int *)arg = state->ks_state & LOCK_MASK;
964 case KDSKBSTATE: /* set lock key state */
965 if (*(int *)arg & ~LOCK_MASK) {
966 lwkt_reltoken(&tty_token);
970 state->ks_state &= ~LOCK_MASK;
971 state->ks_state |= *(int *)arg;
972 lwkt_reltoken(&tty_token);
974 /* set LEDs and quit */
975 return atkbd_ioctl(kbd, KDSETLED, arg);
977 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */
979 if (!KBD_HAS_DEVICE(kbd)) {
980 lwkt_reltoken(&tty_token);
983 i = typematic(((int *)arg)[0], ((int *)arg)[1]);
984 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i);
986 kbd->kb_delay1 = typematic_delay(i);
987 kbd->kb_delay2 = typematic_rate(i);
989 lwkt_reltoken(&tty_token);
992 case KDSETRAD: /* set keyboard repeat rate (old interface) */
994 if (!KBD_HAS_DEVICE(kbd)) {
995 lwkt_reltoken(&tty_token);
998 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg);
1000 kbd->kb_delay1 = typematic_delay(*(int *)arg);
1001 kbd->kb_delay2 = typematic_rate(*(int *)arg);
1003 lwkt_reltoken(&tty_token);
1006 case PIO_KEYMAP: /* set keyboard translation table */
1007 case PIO_KEYMAPENT: /* set keyboard translation table entry */
1008 case PIO_DEADKEYMAP: /* set accent key translation table */
1009 state->ks_accents = 0;
1012 lwkt_reltoken(&tty_token);
1014 return genkbd_commonioctl(kbd, cmd, arg);
1017 lwkt_reltoken(&tty_token);
1022 /* lock the access to the keyboard */
1024 atkbd_lock(keyboard_t *kbd, int lock)
1026 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock);
1029 /* clear the internal state of the keyboard */
1031 atkbd_clear_state(keyboard_t *kbd)
1033 atkbd_state_t *state;
1035 state = (atkbd_state_t *)kbd->kb_data;
1036 state->ks_flags = 0;
1037 state->ks_polling = 0;
1038 state->ks_state &= LOCK_MASK; /* preserve locking key state */
1039 state->ks_accents = 0;
1040 state->ks_composed_char = 0;
1042 state->ks_prefix = 0; /* XXX */
1046 /* save the internal state */
1048 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len)
1051 return sizeof(atkbd_state_t);
1052 if (len < sizeof(atkbd_state_t))
1055 lwkt_gettoken(&tty_token);
1056 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t));
1057 lwkt_reltoken(&tty_token);
1061 /* set the internal state */
1063 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len)
1065 if (len < sizeof(atkbd_state_t))
1067 if (((atkbd_state_t *)kbd->kb_data)->kbdc
1068 != ((atkbd_state_t *)buf)->kbdc)
1070 lwkt_gettoken(&tty_token);
1071 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t));
1072 lwkt_reltoken(&tty_token);
1077 atkbd_poll(keyboard_t *kbd, int on)
1079 atkbd_state_t *state;
1081 lwkt_gettoken(&tty_token);
1082 state = (atkbd_state_t *)kbd->kb_data;
1085 ++state->ks_polling;
1087 --state->ks_polling;
1089 lwkt_reltoken(&tty_token);
1093 /* local functions */
1096 get_typematic(keyboard_t *kbd)
1100 * Only some systems allow us to retrieve the keyboard repeat
1101 * rate previously set via the BIOS...
1103 struct vm86frame vmf;
1106 bzero(&vmf, sizeof(vmf));
1107 vmf.vmf_ax = 0xc000;
1108 vm86_intcall(0x15, &vmf);
1109 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah)
1111 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx);
1112 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */
1114 vmf.vmf_ax = 0x0900;
1115 vm86_intcall(0x16, &vmf);
1116 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */
1118 vmf.vmf_ax = 0x0306;
1119 vm86_intcall(0x16, &vmf);
1120 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5);
1121 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl);
1125 #endif /* __i386__ */
1129 setup_kbd_port(KBDC kbdc, int port, int intr)
1131 if (!set_controller_command_byte(kbdc,
1132 KBD_KBD_CONTROL_BITS,
1133 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT)
1134 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT)))
1140 get_kbd_echo(KBDC kbdc)
1142 /* enable the keyboard port, but disable the keyboard intr. */
1143 if (setup_kbd_port(kbdc, TRUE, FALSE))
1144 /* CONTROLLER ERROR: there is very little we can do... */
1147 /* see if something is present */
1148 write_kbd_command(kbdc, KBDC_ECHO);
1149 if (read_kbd_data(kbdc) != KBD_ECHO) {
1150 empty_both_buffers(kbdc, 10);
1151 test_controller(kbdc);
1152 test_kbd_port(kbdc);
1156 /* enable the keyboard port and intr. */
1157 if (setup_kbd_port(kbdc, TRUE, TRUE)) {
1160 * This is serious; the keyboard intr is left disabled!
1169 probe_keyboard(KBDC kbdc, int flags)
1172 * Don't try to print anything in this function. The low-level
1173 * console may not have been initialized yet...
1179 if (!kbdc_lock(kbdc, TRUE)) {
1184 /* temporarily block data transmission from the keyboard */
1185 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
1187 /* flush any noise in the buffer */
1188 empty_both_buffers(kbdc, 100);
1190 /* save the current keyboard controller command byte */
1191 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS;
1192 c = get_controller_command_byte(kbdc);
1194 /* CONTROLLER ERROR */
1195 kbdc_set_device_mask(kbdc, m);
1196 kbdc_lock(kbdc, FALSE);
1201 * The keyboard may have been screwed up by the boot block.
1202 * We may just be able to recover from error by testing the controller
1203 * and the keyboard port. The controller command byte needs to be
1204 * saved before this recovery operation, as some controllers seem
1205 * to set the command byte to particular values.
1207 test_controller(kbdc);
1208 test_kbd_port(kbdc);
1210 err = get_kbd_echo(kbdc);
1213 * Even if the keyboard doesn't seem to be present (err != 0),
1214 * we shall enable the keyboard port and interrupt so that
1215 * the driver will be operable when the keyboard is attached
1216 * to the system later. It is NOT recommended to hot-plug
1217 * the AT keyboard, but many people do so...
1219 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS);
1220 setup_kbd_port(kbdc, TRUE, TRUE);
1223 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS);
1225 /* try to restore the command byte as before */
1226 set_controller_command_byte(kbdc, 0xff, c);
1227 kbdc_set_device_mask(kbdc, m);
1231 kbdc_lock(kbdc, FALSE);
1236 init_keyboard(KBDC kbdc, int *type, int flags)
1242 if (!kbdc_lock(kbdc, TRUE)) {
1247 /* temporarily block data transmission from the keyboard */
1248 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
1250 /* save the current controller command byte */
1251 empty_both_buffers(kbdc, 200);
1252 c = get_controller_command_byte(kbdc);
1254 /* CONTROLLER ERROR */
1255 kbdc_lock(kbdc, FALSE);
1256 kprintf("atkbd: unable to get the current command byte value.\n");
1260 kprintf("atkbd: the current kbd controller command byte %04x\n",
1263 /* override the keyboard lock switch */
1264 c |= KBD_OVERRIDE_KBD_LOCK;
1267 /* enable the keyboard port, but disable the keyboard intr. */
1268 if (setup_kbd_port(kbdc, TRUE, FALSE)) {
1269 /* CONTROLLER ERROR: there is very little we can do... */
1270 kprintf("atkbd: unable to set the command byte.\n");
1271 kbdc_lock(kbdc, FALSE);
1276 * Check if we have an XT keyboard before we attempt to reset it.
1277 * The procedure assumes that the keyboard and the controller have
1278 * been set up properly by BIOS and have not been messed up
1279 * during the boot process.
1282 if (flags & KB_CONF_ALT_SCANCODESET)
1283 /* the user says there is a XT keyboard */
1285 #ifdef KBD_DETECT_XT_KEYBOARD
1286 else if ((c & KBD_TRANSLATION) == 0) {
1287 /* SET_SCANCODE_SET is not always supported; ignore error */
1288 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0)
1290 codeset = read_kbd_data(kbdc);
1293 kprintf("atkbd: scancode set %d\n", codeset);
1294 #endif /* KBD_DETECT_XT_KEYBOARD */
1297 id = get_kbd_id(kbdc);
1299 case 0x41ab: /* 101/102/... Enhanced */
1300 case 0x83ab: /* ditto */
1301 case 0x54ab: /* SpaceSaver */
1302 case 0x84ab: /* ditto */
1304 case 0x90ab: /* 'G' */
1305 case 0x91ab: /* 'P' */
1306 case 0x92ab: /* 'A' */
1310 case -1: /* AT 84 keyboard doesn't return ID */
1317 kprintf("atkbd: keyboard ID 0x%x (%d)\n", id, *type);
1319 /* reset keyboard hardware */
1320 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) {
1323 * Keyboard reset may fail either because the keyboard
1324 * doen't exist, or because the keyboard doesn't pass
1325 * the self-test, or the keyboard controller on the
1326 * motherboard and the keyboard somehow fail to shake hands.
1327 * It is just possible, particularly in the last case,
1328 * that the keyoard controller may be left in a hung state.
1329 * test_controller() and test_kbd_port() appear to bring
1330 * the keyboard controller back (I don't know why and how,
1333 empty_both_buffers(kbdc, 10);
1334 test_controller(kbdc);
1335 test_kbd_port(kbdc);
1337 * We could disable the keyboard port and interrupt... but,
1338 * the keyboard may still exist (see above).
1340 set_controller_command_byte(kbdc, 0xff, c);
1341 kbdc_lock(kbdc, FALSE);
1343 kprintf("atkbd: failed to reset the keyboard.\n");
1348 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards
1349 * such as those on the IBM ThinkPad laptop computers can be used
1350 * with the standard console driver.
1353 if (send_kbd_command_and_data(kbdc,
1354 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
1355 /* XT kbd doesn't need scan code translation */
1356 c &= ~KBD_TRANSLATION;
1360 * The XT kbd isn't usable unless the proper scan
1361 * code set is selected.
1363 set_controller_command_byte(kbdc, 0xff, c);
1364 kbdc_lock(kbdc, FALSE);
1365 kprintf("atkbd: unable to set the XT keyboard mode.\n");
1370 /* enable the keyboard port and intr. */
1371 if (!set_controller_command_byte(kbdc,
1372 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK,
1373 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
1374 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) {
1377 * This is serious; we are left with the disabled
1380 set_controller_command_byte(kbdc, 0xff, c);
1381 kbdc_lock(kbdc, FALSE);
1382 kprintf("atkbd: unable to enable the keyboard port and intr.\n");
1386 kbdc_lock(kbdc, FALSE);
1391 write_kbd(KBDC kbdc, int command, int data)
1393 /* prevent the timeout routine from polling the keyboard */
1394 if (!kbdc_lock(kbdc, TRUE))
1397 /* disable the keyboard and mouse interrupt */
1400 c = get_controller_command_byte(kbdc);
1402 || !set_controller_command_byte(kbdc,
1403 kbdc_get_device_mask(kbdc),
1404 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
1405 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
1406 /* CONTROLLER ERROR */
1407 kbdc_lock(kbdc, FALSE);
1412 * Now that the keyboard controller is told not to generate
1413 * the keyboard and mouse interrupts, call `splx()' to allow
1414 * the other tty interrupts. The clock interrupt may also occur,
1415 * but the timeout routine (`scrn_timer()') will be blocked
1416 * by the lock flag set via `kbdc_lock()'
1421 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK)
1422 send_kbd_command(kbdc, KBDC_ENABLE_KBD);
1425 /* restore the interrupts */
1426 if (!set_controller_command_byte(kbdc,
1427 kbdc_get_device_mask(kbdc),
1428 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) {
1429 /* CONTROLLER ERROR */
1434 kbdc_lock(kbdc, FALSE);
1440 get_kbd_id(KBDC kbdc)
1444 empty_both_buffers(kbdc, 10);
1446 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK)
1449 DELAY(10000); /* 10 msec delay */
1450 id1 = read_kbd_data(kbdc);
1452 id2 = read_kbd_data(kbdc);
1454 if ((id1 == -1) || (id2 == -1)) {
1455 empty_both_buffers(kbdc, 10);
1456 test_controller(kbdc);
1457 test_kbd_port(kbdc);
1460 return ((id2 << 8) | id1);
1463 static int delays[] = { 250, 500, 750, 1000 };
1464 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63,
1465 68, 76, 84, 92, 100, 110, 118, 126,
1466 136, 152, 168, 184, 200, 220, 236, 252,
1467 272, 304, 336, 368, 400, 440, 472, 504 };
1470 typematic_delay(int i)
1472 return delays[(i >> 5) & 3];
1476 typematic_rate(int i)
1478 return rates[i & 0x1f];
1482 typematic(int delay, int rate)
1487 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) {
1488 if (delay >= delays[i])
1492 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) {
1493 if (rate >= rates[i])