1 /*
2 * vkbd.c
3 */
4
5 /*-
6 * SPDX-License-Identifier: BSD-2-Clause
7 *
8 * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $Id: vkbd.c,v 1.20 2004/11/15 23:53:30 max Exp $
33 */
34
35 #include "opt_kbd.h"
36
37 #include <sys/param.h>
38 #include <sys/conf.h>
39 #include <sys/eventhandler.h>
40 #include <sys/fcntl.h>
41 #include <sys/kbio.h>
42 #include <sys/kernel.h>
43 #include <sys/limits.h>
44 #include <sys/lock.h>
45 #include <sys/malloc.h>
46 #include <sys/module.h>
47 #include <sys/mutex.h>
48 #include <sys/poll.h>
49 #include <sys/proc.h>
50 #include <sys/queue.h>
51 #include <sys/selinfo.h>
52 #include <sys/systm.h>
53 #include <sys/taskqueue.h>
54 #include <sys/uio.h>
55 #include <dev/kbd/kbdreg.h>
56 #include <dev/kbd/kbdtables.h>
57 #include <dev/vkbd/vkbd_var.h>
58
59 #define DEVICE_NAME "vkbdctl"
60 #define KEYBOARD_NAME "vkbd"
61
62 MALLOC_DECLARE(M_VKBD);
63 MALLOC_DEFINE(M_VKBD, KEYBOARD_NAME, "Virtual AT keyboard");
64
65 /*****************************************************************************
66 *****************************************************************************
67 ** Keyboard state
68 *****************************************************************************
69 *****************************************************************************/
70
71 /*
72 * XXX
73 * For now rely on Giant mutex to protect our data structures.
74 * Just like the rest of keyboard drivers and syscons(4) do.
75 */
76
77 #if 0 /* not yet */
78 #define VKBD_LOCK_DECL struct mtx ks_lock
79 #define VKBD_LOCK_INIT(s) mtx_init(&(s)->ks_lock, "vkbd_lock", NULL, MTX_DEF|MTX_RECURSE)
80 #define VKBD_LOCK_DESTROY(s) mtx_destroy(&(s)->ks_lock)
81 #define VKBD_LOCK(s) mtx_lock(&(s)->ks_lock)
82 #define VKBD_UNLOCK(s) mtx_unlock(&(s)->ks_lock)
83 #define VKBD_LOCK_ASSERT(s, w) mtx_assert(&(s)->ks_lock, w)
84 #define VKBD_SLEEP(s, f, d, t) \
85 msleep(&(s)->f, &(s)->ks_lock, PCATCH | (PZERO + 1), d, t)
86 #else
87 #define VKBD_LOCK_DECL
88 #define VKBD_LOCK_INIT(s)
89 #define VKBD_LOCK_DESTROY(s)
90 #define VKBD_LOCK(s)
91 #define VKBD_UNLOCK(s)
92 #define VKBD_LOCK_ASSERT(s, w)
93 #define VKBD_SLEEP(s, f, d, t) tsleep(&(s)->f, PCATCH | (PZERO + 1), d, t)
94 #endif
95
96 #define VKBD_KEYBOARD(d) \
97 kbd_get_keyboard(kbd_find_keyboard(KEYBOARD_NAME, dev2unit(d)))
98
99 /* vkbd queue */
100 struct vkbd_queue
101 {
102 int q[VKBD_Q_SIZE]; /* queue */
103 int head; /* index of the first code */
104 int tail; /* index of the last code */
105 int cc; /* number of codes in queue */
106 };
107
108 typedef struct vkbd_queue vkbd_queue_t;
109
110 /* vkbd state */
111 struct vkbd_state
112 {
113 struct cdev *ks_dev; /* control device */
114
115 struct selinfo ks_rsel; /* select(2) */
116 struct selinfo ks_wsel;
117
118 vkbd_queue_t ks_inq; /* input key codes queue */
119 struct task ks_task; /* interrupt task */
120
121 int ks_flags; /* flags */
122 #define OPEN (1 << 0) /* control device is open */
123 #define COMPOSE (1 << 1) /* compose flag */
124 #define STATUS (1 << 2) /* status has changed */
125 #define TASK (1 << 3) /* interrupt task queued */
126 #define READ (1 << 4) /* read pending */
127 #define WRITE (1 << 5) /* write pending */
128
129 int ks_mode; /* K_XLATE, K_RAW, K_CODE */
130 int ks_polling; /* polling flag */
131 int ks_state; /* shift/lock key state */
132 int ks_accents; /* accent key index (> 0) */
133 u_int ks_composed_char; /* composed char code */
134 u_char ks_prefix; /* AT scan code prefix */
135
136 VKBD_LOCK_DECL;
137 };
138
139 typedef struct vkbd_state vkbd_state_t;
140
141 /*****************************************************************************
142 *****************************************************************************
143 ** Character device
144 *****************************************************************************
145 *****************************************************************************/
146
147 static void vkbd_dev_clone(void *, struct ucred *, char *, int,
148 struct cdev **);
149 static d_open_t vkbd_dev_open;
150 static d_close_t vkbd_dev_close;
151 static d_read_t vkbd_dev_read;
152 static d_write_t vkbd_dev_write;
153 static d_ioctl_t vkbd_dev_ioctl;
154 static d_poll_t vkbd_dev_poll;
155 static void vkbd_dev_intr(void *, int);
156 static void vkbd_status_changed(vkbd_state_t *);
157 static int vkbd_data_ready(vkbd_state_t *);
158 static int vkbd_data_read(vkbd_state_t *, int);
159
160 static struct cdevsw vkbd_dev_cdevsw = {
161 .d_version = D_VERSION,
162 .d_flags = D_NEEDGIANT | D_NEEDMINOR,
163 .d_open = vkbd_dev_open,
164 .d_close = vkbd_dev_close,
165 .d_read = vkbd_dev_read,
166 .d_write = vkbd_dev_write,
167 .d_ioctl = vkbd_dev_ioctl,
168 .d_poll = vkbd_dev_poll,
169 .d_name = DEVICE_NAME,
170 };
171
172 static struct clonedevs *vkbd_dev_clones = NULL;
173
174 /* Clone device */
175 static void
vkbd_dev_clone(void * arg,struct ucred * cred,char * name,int namelen,struct cdev ** dev)176 vkbd_dev_clone(void *arg, struct ucred *cred, char *name, int namelen,
177 struct cdev **dev)
178 {
179 int unit;
180
181 if (*dev != NULL)
182 return;
183
184 if (strcmp(name, DEVICE_NAME) == 0)
185 unit = -1;
186 else if (dev_stdclone(name, NULL, DEVICE_NAME, &unit) != 1)
187 return; /* don't recognize the name */
188
189 /* find any existing device, or allocate new unit number */
190 if (clone_create(&vkbd_dev_clones, &vkbd_dev_cdevsw, &unit, dev, 0))
191 *dev = make_dev_credf(MAKEDEV_REF, &vkbd_dev_cdevsw, unit,
192 cred, UID_ROOT, GID_WHEEL, 0600, DEVICE_NAME "%d",
193 unit);
194 else
195 dev_ref(*dev);
196 }
197
198 /* Open device */
199 static int
vkbd_dev_open(struct cdev * dev,int flag,int mode,struct thread * td)200 vkbd_dev_open(struct cdev *dev, int flag, int mode, struct thread *td)
201 {
202 int unit = dev2unit(dev), error;
203 keyboard_switch_t *sw = NULL;
204 keyboard_t *kbd = NULL;
205 vkbd_state_t *state = (vkbd_state_t *) dev->si_drv1;
206
207 /* XXX FIXME: dev->si_drv1 locking */
208 if (state == NULL) {
209 if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL)
210 return (ENXIO);
211
212 if ((error = (*sw->probe)(unit, NULL, 0)) != 0 ||
213 (error = (*sw->init)(unit, &kbd, NULL, 0)) != 0)
214 return (error);
215
216 state = (vkbd_state_t *) kbd->kb_data;
217
218 if ((error = (*sw->enable)(kbd)) != 0) {
219 (*sw->term)(kbd);
220 return (error);
221 }
222
223 #ifdef KBD_INSTALL_CDEV
224 if ((error = kbd_attach(kbd)) != 0) {
225 (*sw->disable)(kbd);
226 (*sw->term)(kbd);
227 return (error);
228 }
229 #endif /* def KBD_INSTALL_CDEV */
230
231 dev->si_drv1 = kbd->kb_data;
232 }
233
234 VKBD_LOCK(state);
235
236 if (state->ks_flags & OPEN) {
237 VKBD_UNLOCK(state);
238 return (EBUSY);
239 }
240
241 state->ks_flags |= OPEN;
242 state->ks_dev = dev;
243
244 VKBD_UNLOCK(state);
245
246 return (0);
247 }
248
249 /* Close device */
250 static int
vkbd_dev_close(struct cdev * dev,int foo,int bar,struct thread * td)251 vkbd_dev_close(struct cdev *dev, int foo, int bar, struct thread *td)
252 {
253 keyboard_t *kbd = VKBD_KEYBOARD(dev);
254 vkbd_state_t *state = NULL;
255
256 if (kbd == NULL)
257 return (ENXIO);
258
259 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1)
260 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__);
261
262 state = (vkbd_state_t *) kbd->kb_data;
263
264 VKBD_LOCK(state);
265
266 /* wait for interrupt task */
267 while (state->ks_flags & TASK)
268 VKBD_SLEEP(state, ks_task, "vkbdc", 0);
269
270 /* wakeup poll()ers */
271 selwakeuppri(&state->ks_rsel, PZERO + 1);
272 selwakeuppri(&state->ks_wsel, PZERO + 1);
273
274 state->ks_flags &= ~OPEN;
275 state->ks_dev = NULL;
276 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0;
277
278 VKBD_UNLOCK(state);
279
280 kbdd_disable(kbd);
281 #ifdef KBD_INSTALL_CDEV
282 kbd_detach(kbd);
283 #endif /* def KBD_INSTALL_CDEV */
284 kbdd_term(kbd);
285
286 /* XXX FIXME: dev->si_drv1 locking */
287 dev->si_drv1 = NULL;
288
289 return (0);
290 }
291
292 /* Read status */
293 static int
vkbd_dev_read(struct cdev * dev,struct uio * uio,int flag)294 vkbd_dev_read(struct cdev *dev, struct uio *uio, int flag)
295 {
296 keyboard_t *kbd = VKBD_KEYBOARD(dev);
297 vkbd_state_t *state = NULL;
298 vkbd_status_t status;
299 int error;
300
301 if (kbd == NULL)
302 return (ENXIO);
303
304 if (uio->uio_resid != sizeof(status))
305 return (EINVAL);
306
307 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1)
308 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__);
309
310 state = (vkbd_state_t *) kbd->kb_data;
311
312 VKBD_LOCK(state);
313
314 if (state->ks_flags & READ) {
315 VKBD_UNLOCK(state);
316 return (EALREADY);
317 }
318
319 state->ks_flags |= READ;
320 again:
321 if (state->ks_flags & STATUS) {
322 state->ks_flags &= ~STATUS;
323
324 status.mode = state->ks_mode;
325 status.leds = KBD_LED_VAL(kbd);
326 status.lock = state->ks_state & LOCK_MASK;
327 status.delay = kbd->kb_delay1;
328 status.rate = kbd->kb_delay2;
329 bzero(status.reserved, sizeof(status.reserved));
330
331 error = uiomove(&status, sizeof(status), uio);
332 } else {
333 if (flag & O_NONBLOCK) {
334 error = EWOULDBLOCK;
335 goto done;
336 }
337
338 error = VKBD_SLEEP(state, ks_flags, "vkbdr", 0);
339 if (error != 0)
340 goto done;
341
342 goto again;
343 }
344 done:
345 state->ks_flags &= ~READ;
346
347 VKBD_UNLOCK(state);
348
349 return (error);
350 }
351
352 /* Write scancodes */
353 static int
vkbd_dev_write(struct cdev * dev,struct uio * uio,int flag)354 vkbd_dev_write(struct cdev *dev, struct uio *uio, int flag)
355 {
356 keyboard_t *kbd = VKBD_KEYBOARD(dev);
357 vkbd_state_t *state = NULL;
358 vkbd_queue_t *q = NULL;
359 int error, avail, bytes;
360
361 if (kbd == NULL)
362 return (ENXIO);
363
364 if (uio->uio_resid <= 0)
365 return (EINVAL);
366
367 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1)
368 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__);
369
370 state = (vkbd_state_t *) kbd->kb_data;
371
372 VKBD_LOCK(state);
373
374 if (state->ks_flags & WRITE) {
375 VKBD_UNLOCK(state);
376 return (EALREADY);
377 }
378
379 state->ks_flags |= WRITE;
380 error = 0;
381 q = &state->ks_inq;
382
383 while (uio->uio_resid >= sizeof(q->q[0])) {
384 if (q->head == q->tail) {
385 if (q->cc == 0)
386 avail = nitems(q->q) - q->head;
387 else
388 avail = 0; /* queue must be full */
389 } else if (q->head < q->tail)
390 avail = nitems(q->q) - q->tail;
391 else
392 avail = q->head - q->tail;
393
394 if (avail == 0) {
395 if (flag & O_NONBLOCK) {
396 error = EWOULDBLOCK;
397 break;
398 }
399
400 error = VKBD_SLEEP(state, ks_inq, "vkbdw", 0);
401 if (error != 0)
402 break;
403 } else {
404 bytes = avail * sizeof(q->q[0]);
405 if (bytes > uio->uio_resid) {
406 avail = uio->uio_resid / sizeof(q->q[0]);
407 bytes = avail * sizeof(q->q[0]);
408 }
409
410 error = uiomove((void *) &q->q[q->tail], bytes, uio);
411 if (error != 0)
412 break;
413
414 q->cc += avail;
415 q->tail += avail;
416 if (q->tail == nitems(q->q))
417 q->tail = 0;
418
419 /* queue interrupt task if needed */
420 if (!(state->ks_flags & TASK) &&
421 taskqueue_enqueue(taskqueue_swi_giant, &state->ks_task) == 0)
422 state->ks_flags |= TASK;
423 }
424 }
425
426 state->ks_flags &= ~WRITE;
427
428 VKBD_UNLOCK(state);
429
430 return (error);
431 }
432
433 /* Process ioctl */
434 static int
vkbd_dev_ioctl(struct cdev * dev,u_long cmd,caddr_t data,int flag,struct thread * td)435 vkbd_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
436 {
437 keyboard_t *kbd = VKBD_KEYBOARD(dev);
438
439 return ((kbd == NULL)? ENXIO : kbdd_ioctl(kbd, cmd, data));
440 }
441
442 /* Poll device */
443 static int
vkbd_dev_poll(struct cdev * dev,int events,struct thread * td)444 vkbd_dev_poll(struct cdev *dev, int events, struct thread *td)
445 {
446 vkbd_state_t *state = (vkbd_state_t *) dev->si_drv1;
447 vkbd_queue_t *q = NULL;
448 int revents = 0;
449
450 if (state == NULL)
451 return (ENXIO);
452
453 VKBD_LOCK(state);
454
455 q = &state->ks_inq;
456
457 if (events & (POLLIN | POLLRDNORM)) {
458 if (state->ks_flags & STATUS)
459 revents |= events & (POLLIN | POLLRDNORM);
460 else
461 selrecord(td, &state->ks_rsel);
462 }
463
464 if (events & (POLLOUT | POLLWRNORM)) {
465 if (q->cc < nitems(q->q))
466 revents |= events & (POLLOUT | POLLWRNORM);
467 else
468 selrecord(td, &state->ks_wsel);
469 }
470
471 VKBD_UNLOCK(state);
472
473 return (revents);
474 }
475
476 /* Interrupt handler */
477 void
vkbd_dev_intr(void * xkbd,int pending)478 vkbd_dev_intr(void *xkbd, int pending)
479 {
480 keyboard_t *kbd = (keyboard_t *) xkbd;
481 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
482
483 kbdd_intr(kbd, NULL);
484
485 VKBD_LOCK(state);
486
487 state->ks_flags &= ~TASK;
488 wakeup(&state->ks_task);
489
490 VKBD_UNLOCK(state);
491 }
492
493 /* Set status change flags */
494 static void
vkbd_status_changed(vkbd_state_t * state)495 vkbd_status_changed(vkbd_state_t *state)
496 {
497 VKBD_LOCK_ASSERT(state, MA_OWNED);
498
499 if (!(state->ks_flags & STATUS)) {
500 state->ks_flags |= STATUS;
501 selwakeuppri(&state->ks_rsel, PZERO + 1);
502 wakeup(&state->ks_flags);
503 }
504 }
505
506 /* Check if we have data in the input queue */
507 static int
vkbd_data_ready(vkbd_state_t * state)508 vkbd_data_ready(vkbd_state_t *state)
509 {
510 VKBD_LOCK_ASSERT(state, MA_OWNED);
511
512 return (state->ks_inq.cc > 0);
513 }
514
515 /* Read one code from the input queue */
516 static int
vkbd_data_read(vkbd_state_t * state,int wait)517 vkbd_data_read(vkbd_state_t *state, int wait)
518 {
519 vkbd_queue_t *q = &state->ks_inq;
520 int c;
521
522 VKBD_LOCK_ASSERT(state, MA_OWNED);
523
524 if (q->cc == 0)
525 return (-1);
526
527 /* get first code from the queue */
528 q->cc --;
529 c = q->q[q->head ++];
530 if (q->head == nitems(q->q))
531 q->head = 0;
532
533 /* wakeup ks_inq writers/poll()ers */
534 selwakeuppri(&state->ks_wsel, PZERO + 1);
535 wakeup(q);
536
537 return (c);
538 }
539
540 /****************************************************************************
541 ****************************************************************************
542 ** Keyboard driver
543 ****************************************************************************
544 ****************************************************************************/
545
546 static int vkbd_configure(int flags);
547 static kbd_probe_t vkbd_probe;
548 static kbd_init_t vkbd_init;
549 static kbd_term_t vkbd_term;
550 static kbd_intr_t vkbd_intr;
551 static kbd_test_if_t vkbd_test_if;
552 static kbd_enable_t vkbd_enable;
553 static kbd_disable_t vkbd_disable;
554 static kbd_read_t vkbd_read;
555 static kbd_check_t vkbd_check;
556 static kbd_read_char_t vkbd_read_char;
557 static kbd_check_char_t vkbd_check_char;
558 static kbd_ioctl_t vkbd_ioctl;
559 static kbd_lock_t vkbd_lock;
560 static void vkbd_clear_state_locked(vkbd_state_t *state);
561 static kbd_clear_state_t vkbd_clear_state;
562 static kbd_get_state_t vkbd_get_state;
563 static kbd_set_state_t vkbd_set_state;
564 static kbd_poll_mode_t vkbd_poll;
565
566 static keyboard_switch_t vkbdsw = {
567 .probe = vkbd_probe,
568 .init = vkbd_init,
569 .term = vkbd_term,
570 .intr = vkbd_intr,
571 .test_if = vkbd_test_if,
572 .enable = vkbd_enable,
573 .disable = vkbd_disable,
574 .read = vkbd_read,
575 .check = vkbd_check,
576 .read_char = vkbd_read_char,
577 .check_char = vkbd_check_char,
578 .ioctl = vkbd_ioctl,
579 .lock = vkbd_lock,
580 .clear_state = vkbd_clear_state,
581 .get_state = vkbd_get_state,
582 .set_state = vkbd_set_state,
583 .poll = vkbd_poll,
584 };
585
586 static int typematic(int delay, int rate);
587 static int typematic_delay(int delay);
588 static int typematic_rate(int rate);
589
590 /* Return the number of found keyboards */
591 static int
vkbd_configure(int flags)592 vkbd_configure(int flags)
593 {
594 return (1);
595 }
596
597 /* Detect a keyboard */
598 static int
vkbd_probe(int unit,void * arg,int flags)599 vkbd_probe(int unit, void *arg, int flags)
600 {
601 return (0);
602 }
603
604 /* Reset and initialize the keyboard (stolen from atkbd.c) */
605 static int
vkbd_init(int unit,keyboard_t ** kbdp,void * arg,int flags)606 vkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags)
607 {
608 keyboard_t *kbd = NULL;
609 vkbd_state_t *state = NULL;
610 keymap_t *keymap = NULL;
611 accentmap_t *accmap = NULL;
612 fkeytab_t *fkeymap = NULL;
613 int fkeymap_size, delay[2];
614 int error, needfree;
615
616 if (*kbdp == NULL) {
617 *kbdp = kbd = malloc(sizeof(*kbd), M_VKBD, M_NOWAIT | M_ZERO);
618 state = malloc(sizeof(*state), M_VKBD, M_NOWAIT | M_ZERO);
619 keymap = malloc(sizeof(key_map), M_VKBD, M_NOWAIT);
620 accmap = malloc(sizeof(accent_map), M_VKBD, M_NOWAIT);
621 fkeymap = malloc(sizeof(fkey_tab), M_VKBD, M_NOWAIT);
622 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]);
623 needfree = 1;
624 if ((kbd == NULL) || (state == NULL) || (keymap == NULL) ||
625 (accmap == NULL) || (fkeymap == NULL)) {
626 error = ENOMEM;
627 goto bad;
628 }
629
630 VKBD_LOCK_INIT(state);
631 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0;
632 TASK_INIT(&state->ks_task, 0, vkbd_dev_intr, (void *) kbd);
633 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) {
634 return (0);
635 } else {
636 kbd = *kbdp;
637 state = (vkbd_state_t *) kbd->kb_data;
638 keymap = kbd->kb_keymap;
639 accmap = kbd->kb_accentmap;
640 fkeymap = kbd->kb_fkeytab;
641 fkeymap_size = kbd->kb_fkeytab_size;
642 needfree = 0;
643 }
644
645 if (!KBD_IS_PROBED(kbd)) {
646 kbd_init_struct(kbd, KEYBOARD_NAME, KB_OTHER, unit, flags, 0, 0);
647 bcopy(&key_map, keymap, sizeof(key_map));
648 bcopy(&accent_map, accmap, sizeof(accent_map));
649 bcopy(fkey_tab, fkeymap,
650 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab)));
651 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size);
652 kbd->kb_data = (void *)state;
653
654 KBD_FOUND_DEVICE(kbd);
655 KBD_PROBE_DONE(kbd);
656
657 VKBD_LOCK(state);
658 vkbd_clear_state_locked(state);
659 state->ks_mode = K_XLATE;
660 /* FIXME: set the initial value for lock keys in ks_state */
661 VKBD_UNLOCK(state);
662 }
663 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) {
664 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY;
665
666 vkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
667 delay[0] = kbd->kb_delay1;
668 delay[1] = kbd->kb_delay2;
669 vkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay);
670
671 KBD_INIT_DONE(kbd);
672 }
673 if (!KBD_IS_CONFIGURED(kbd)) {
674 if (kbd_register(kbd) < 0) {
675 error = ENXIO;
676 goto bad;
677 }
678 KBD_CONFIG_DONE(kbd);
679 }
680
681 return (0);
682 bad:
683 if (needfree) {
684 if (state != NULL)
685 free(state, M_VKBD);
686 if (keymap != NULL)
687 free(keymap, M_VKBD);
688 if (accmap != NULL)
689 free(accmap, M_VKBD);
690 if (fkeymap != NULL)
691 free(fkeymap, M_VKBD);
692 if (kbd != NULL) {
693 free(kbd, M_VKBD);
694 *kbdp = NULL; /* insure ref doesn't leak to caller */
695 }
696 }
697 return (error);
698 }
699
700 /* Finish using this keyboard */
701 static int
vkbd_term(keyboard_t * kbd)702 vkbd_term(keyboard_t *kbd)
703 {
704 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
705
706 kbd_unregister(kbd);
707
708 VKBD_LOCK_DESTROY(state);
709 bzero(state, sizeof(*state));
710 free(state, M_VKBD);
711
712 free(kbd->kb_keymap, M_VKBD);
713 free(kbd->kb_accentmap, M_VKBD);
714 free(kbd->kb_fkeytab, M_VKBD);
715 free(kbd, M_VKBD);
716
717 return (0);
718 }
719
720 /* Keyboard interrupt routine */
721 static int
vkbd_intr(keyboard_t * kbd,void * arg)722 vkbd_intr(keyboard_t *kbd, void *arg)
723 {
724 int c;
725
726 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) {
727 /* let the callback function to process the input */
728 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT,
729 kbd->kb_callback.kc_arg);
730 } else {
731 /* read and discard the input; no one is waiting for input */
732 do {
733 c = vkbd_read_char(kbd, FALSE);
734 } while (c != NOKEY);
735 }
736
737 return (0);
738 }
739
740 /* Test the interface to the device */
741 static int
vkbd_test_if(keyboard_t * kbd)742 vkbd_test_if(keyboard_t *kbd)
743 {
744 return (0);
745 }
746
747 /*
748 * Enable the access to the device; until this function is called,
749 * the client cannot read from the keyboard.
750 */
751
752 static int
vkbd_enable(keyboard_t * kbd)753 vkbd_enable(keyboard_t *kbd)
754 {
755 KBD_ACTIVATE(kbd);
756 return (0);
757 }
758
759 /* Disallow the access to the device */
760 static int
vkbd_disable(keyboard_t * kbd)761 vkbd_disable(keyboard_t *kbd)
762 {
763 KBD_DEACTIVATE(kbd);
764 return (0);
765 }
766
767 /* Read one byte from the keyboard if it's allowed */
768 static int
vkbd_read(keyboard_t * kbd,int wait)769 vkbd_read(keyboard_t *kbd, int wait)
770 {
771 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
772 int c;
773
774 VKBD_LOCK(state);
775 c = vkbd_data_read(state, wait);
776 VKBD_UNLOCK(state);
777
778 if (c != -1)
779 kbd->kb_count ++;
780
781 return (KBD_IS_ACTIVE(kbd)? c : -1);
782 }
783
784 /* Check if data is waiting */
785 static int
vkbd_check(keyboard_t * kbd)786 vkbd_check(keyboard_t *kbd)
787 {
788 vkbd_state_t *state = NULL;
789 int ready;
790
791 if (!KBD_IS_ACTIVE(kbd))
792 return (FALSE);
793
794 state = (vkbd_state_t *) kbd->kb_data;
795
796 VKBD_LOCK(state);
797 ready = vkbd_data_ready(state);
798 VKBD_UNLOCK(state);
799
800 return (ready);
801 }
802
803 /* Read char from the keyboard (stolen from atkbd.c) */
804 static u_int
vkbd_read_char(keyboard_t * kbd,int wait)805 vkbd_read_char(keyboard_t *kbd, int wait)
806 {
807 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
808 u_int action;
809 int scancode, keycode;
810
811 VKBD_LOCK(state);
812
813 next_code:
814
815 /* do we have a composed char to return? */
816 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {
817 action = state->ks_composed_char;
818 state->ks_composed_char = 0;
819 if (action > UCHAR_MAX) {
820 VKBD_UNLOCK(state);
821 return (ERRKEY);
822 }
823
824 VKBD_UNLOCK(state);
825 return (action);
826 }
827
828 /* see if there is something in the keyboard port */
829 scancode = vkbd_data_read(state, wait);
830 if (scancode == -1) {
831 VKBD_UNLOCK(state);
832 return (NOKEY);
833 }
834 /* XXX FIXME: check for -1 if wait == 1! */
835
836 kbd->kb_count ++;
837
838 /* return the byte as is for the K_RAW mode */
839 if (state->ks_mode == K_RAW) {
840 VKBD_UNLOCK(state);
841 return (scancode);
842 }
843
844 /* translate the scan code into a keycode */
845 keycode = scancode & 0x7F;
846 switch (state->ks_prefix) {
847 case 0x00: /* normal scancode */
848 switch(scancode) {
849 case 0xB8: /* left alt (compose key) released */
850 if (state->ks_flags & COMPOSE) {
851 state->ks_flags &= ~COMPOSE;
852 if (state->ks_composed_char > UCHAR_MAX)
853 state->ks_composed_char = 0;
854 }
855 break;
856 case 0x38: /* left alt (compose key) pressed */
857 if (!(state->ks_flags & COMPOSE)) {
858 state->ks_flags |= COMPOSE;
859 state->ks_composed_char = 0;
860 }
861 break;
862 case 0xE0:
863 case 0xE1:
864 state->ks_prefix = scancode;
865 goto next_code;
866 }
867 break;
868 case 0xE0: /* 0xE0 prefix */
869 state->ks_prefix = 0;
870 switch (keycode) {
871 case 0x1C: /* right enter key */
872 keycode = 0x59;
873 break;
874 case 0x1D: /* right ctrl key */
875 keycode = 0x5A;
876 break;
877 case 0x35: /* keypad divide key */
878 keycode = 0x5B;
879 break;
880 case 0x37: /* print scrn key */
881 keycode = 0x5C;
882 break;
883 case 0x38: /* right alt key (alt gr) */
884 keycode = 0x5D;
885 break;
886 case 0x46: /* ctrl-pause/break on AT 101 (see below) */
887 keycode = 0x68;
888 break;
889 case 0x47: /* grey home key */
890 keycode = 0x5E;
891 break;
892 case 0x48: /* grey up arrow key */
893 keycode = 0x5F;
894 break;
895 case 0x49: /* grey page up key */
896 keycode = 0x60;
897 break;
898 case 0x4B: /* grey left arrow key */
899 keycode = 0x61;
900 break;
901 case 0x4D: /* grey right arrow key */
902 keycode = 0x62;
903 break;
904 case 0x4F: /* grey end key */
905 keycode = 0x63;
906 break;
907 case 0x50: /* grey down arrow key */
908 keycode = 0x64;
909 break;
910 case 0x51: /* grey page down key */
911 keycode = 0x65;
912 break;
913 case 0x52: /* grey insert key */
914 keycode = 0x66;
915 break;
916 case 0x53: /* grey delete key */
917 keycode = 0x67;
918 break;
919 /* the following 3 are only used on the MS "Natural" keyboard */
920 case 0x5b: /* left Window key */
921 keycode = 0x69;
922 break;
923 case 0x5c: /* right Window key */
924 keycode = 0x6a;
925 break;
926 case 0x5d: /* menu key */
927 keycode = 0x6b;
928 break;
929 case 0x5e: /* power key */
930 keycode = 0x6d;
931 break;
932 case 0x5f: /* sleep key */
933 keycode = 0x6e;
934 break;
935 case 0x63: /* wake key */
936 keycode = 0x6f;
937 break;
938 default: /* ignore everything else */
939 goto next_code;
940 }
941 break;
942 case 0xE1: /* 0xE1 prefix */
943 /*
944 * The pause/break key on the 101 keyboard produces:
945 * E1-1D-45 E1-9D-C5
946 * Ctrl-pause/break produces:
947 * E0-46 E0-C6 (See above.)
948 */
949 state->ks_prefix = 0;
950 if (keycode == 0x1D)
951 state->ks_prefix = 0x1D;
952 goto next_code;
953 /* NOT REACHED */
954 case 0x1D: /* pause / break */
955 state->ks_prefix = 0;
956 if (keycode != 0x45)
957 goto next_code;
958 keycode = 0x68;
959 break;
960 }
961
962 if (kbd->kb_type == KB_84) {
963 switch (keycode) {
964 case 0x37: /* *(numpad)/print screen */
965 if (state->ks_flags & SHIFTS)
966 keycode = 0x5c; /* print screen */
967 break;
968 case 0x45: /* num lock/pause */
969 if (state->ks_flags & CTLS)
970 keycode = 0x68; /* pause */
971 break;
972 case 0x46: /* scroll lock/break */
973 if (state->ks_flags & CTLS)
974 keycode = 0x6c; /* break */
975 break;
976 }
977 } else if (kbd->kb_type == KB_101) {
978 switch (keycode) {
979 case 0x5c: /* print screen */
980 if (state->ks_flags & ALTS)
981 keycode = 0x54; /* sysrq */
982 break;
983 case 0x68: /* pause/break */
984 if (state->ks_flags & CTLS)
985 keycode = 0x6c; /* break */
986 break;
987 }
988 }
989
990 /* return the key code in the K_CODE mode */
991 if (state->ks_mode == K_CODE) {
992 VKBD_UNLOCK(state);
993 return (keycode | (scancode & 0x80));
994 }
995
996 /* compose a character code */
997 if (state->ks_flags & COMPOSE) {
998 switch (keycode | (scancode & 0x80)) {
999 /* key pressed, process it */
1000 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */
1001 state->ks_composed_char *= 10;
1002 state->ks_composed_char += keycode - 0x40;
1003 if (state->ks_composed_char > UCHAR_MAX) {
1004 VKBD_UNLOCK(state);
1005 return (ERRKEY);
1006 }
1007 goto next_code;
1008 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */
1009 state->ks_composed_char *= 10;
1010 state->ks_composed_char += keycode - 0x47;
1011 if (state->ks_composed_char > UCHAR_MAX) {
1012 VKBD_UNLOCK(state);
1013 return (ERRKEY);
1014 }
1015 goto next_code;
1016 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */
1017 state->ks_composed_char *= 10;
1018 state->ks_composed_char += keycode - 0x4E;
1019 if (state->ks_composed_char > UCHAR_MAX) {
1020 VKBD_UNLOCK(state);
1021 return (ERRKEY);
1022 }
1023 goto next_code;
1024 case 0x52: /* keypad 0 */
1025 state->ks_composed_char *= 10;
1026 if (state->ks_composed_char > UCHAR_MAX) {
1027 VKBD_UNLOCK(state);
1028 return (ERRKEY);
1029 }
1030 goto next_code;
1031
1032 /* key released, no interest here */
1033 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */
1034 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */
1035 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */
1036 case 0xD2: /* keypad 0 */
1037 goto next_code;
1038
1039 case 0x38: /* left alt key */
1040 break;
1041
1042 default:
1043 if (state->ks_composed_char > 0) {
1044 state->ks_flags &= ~COMPOSE;
1045 state->ks_composed_char = 0;
1046 VKBD_UNLOCK(state);
1047 return (ERRKEY);
1048 }
1049 break;
1050 }
1051 }
1052
1053 /* keycode to key action */
1054 action = genkbd_keyaction(kbd, keycode, scancode & 0x80,
1055 &state->ks_state, &state->ks_accents);
1056 if (action == NOKEY)
1057 goto next_code;
1058
1059 VKBD_UNLOCK(state);
1060
1061 return (action);
1062 }
1063
1064 /* Check if char is waiting */
1065 static int
vkbd_check_char(keyboard_t * kbd)1066 vkbd_check_char(keyboard_t *kbd)
1067 {
1068 vkbd_state_t *state = NULL;
1069 int ready;
1070
1071 if (!KBD_IS_ACTIVE(kbd))
1072 return (FALSE);
1073
1074 state = (vkbd_state_t *) kbd->kb_data;
1075
1076 VKBD_LOCK(state);
1077 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0))
1078 ready = TRUE;
1079 else
1080 ready = vkbd_data_ready(state);
1081 VKBD_UNLOCK(state);
1082
1083 return (ready);
1084 }
1085
1086 /* Some useful control functions (stolen from atkbd.c) */
1087 static int
vkbd_ioctl(keyboard_t * kbd,u_long cmd,caddr_t arg)1088 vkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
1089 {
1090 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
1091 int i;
1092 #ifdef COMPAT_FREEBSD6
1093 int ival;
1094 #endif
1095
1096 VKBD_LOCK(state);
1097
1098 switch (cmd) {
1099 case KDGKBMODE: /* get keyboard mode */
1100 *(int *)arg = state->ks_mode;
1101 break;
1102
1103 #ifdef COMPAT_FREEBSD6
1104 case _IO('K', 7):
1105 ival = IOCPARM_IVAL(arg);
1106 arg = (caddr_t)&ival;
1107 /* FALLTHROUGH */
1108 #endif
1109 case KDSKBMODE: /* set keyboard mode */
1110 switch (*(int *)arg) {
1111 case K_XLATE:
1112 if (state->ks_mode != K_XLATE) {
1113 /* make lock key state and LED state match */
1114 state->ks_state &= ~LOCK_MASK;
1115 state->ks_state |= KBD_LED_VAL(kbd);
1116 vkbd_status_changed(state);
1117 }
1118 /* FALLTHROUGH */
1119
1120 case K_RAW:
1121 case K_CODE:
1122 if (state->ks_mode != *(int *)arg) {
1123 vkbd_clear_state_locked(state);
1124 state->ks_mode = *(int *)arg;
1125 vkbd_status_changed(state);
1126 }
1127 break;
1128
1129 default:
1130 VKBD_UNLOCK(state);
1131 return (EINVAL);
1132 }
1133 break;
1134
1135 case KDGETLED: /* get keyboard LED */
1136 *(int *)arg = KBD_LED_VAL(kbd);
1137 break;
1138
1139 #ifdef COMPAT_FREEBSD6
1140 case _IO('K', 66):
1141 ival = IOCPARM_IVAL(arg);
1142 arg = (caddr_t)&ival;
1143 /* FALLTHROUGH */
1144 #endif
1145 case KDSETLED: /* set keyboard LED */
1146 /* NOTE: lock key state in ks_state won't be changed */
1147 if (*(int *)arg & ~LOCK_MASK) {
1148 VKBD_UNLOCK(state);
1149 return (EINVAL);
1150 }
1151
1152 i = *(int *)arg;
1153 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */
1154 if (state->ks_mode == K_XLATE &&
1155 kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
1156 if (i & ALKED)
1157 i |= CLKED;
1158 else
1159 i &= ~CLKED;
1160 }
1161
1162 KBD_LED_VAL(kbd) = *(int *)arg;
1163 vkbd_status_changed(state);
1164 break;
1165
1166 case KDGKBSTATE: /* get lock key state */
1167 *(int *)arg = state->ks_state & LOCK_MASK;
1168 break;
1169
1170 #ifdef COMPAT_FREEBSD6
1171 case _IO('K', 20):
1172 ival = IOCPARM_IVAL(arg);
1173 arg = (caddr_t)&ival;
1174 /* FALLTHROUGH */
1175 #endif
1176 case KDSKBSTATE: /* set lock key state */
1177 if (*(int *)arg & ~LOCK_MASK) {
1178 VKBD_UNLOCK(state);
1179 return (EINVAL);
1180 }
1181 state->ks_state &= ~LOCK_MASK;
1182 state->ks_state |= *(int *)arg;
1183 vkbd_status_changed(state);
1184 VKBD_UNLOCK(state);
1185 /* set LEDs and quit */
1186 return (vkbd_ioctl(kbd, KDSETLED, arg));
1187
1188 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */
1189 i = typematic(((int *)arg)[0], ((int *)arg)[1]);
1190 kbd->kb_delay1 = typematic_delay(i);
1191 kbd->kb_delay2 = typematic_rate(i);
1192 vkbd_status_changed(state);
1193 break;
1194
1195 #ifdef COMPAT_FREEBSD6
1196 case _IO('K', 67):
1197 ival = IOCPARM_IVAL(arg);
1198 arg = (caddr_t)&ival;
1199 /* FALLTHROUGH */
1200 #endif
1201 case KDSETRAD: /* set keyboard repeat rate (old interface) */
1202 kbd->kb_delay1 = typematic_delay(*(int *)arg);
1203 kbd->kb_delay2 = typematic_rate(*(int *)arg);
1204 vkbd_status_changed(state);
1205 break;
1206
1207 case PIO_KEYMAP: /* set keyboard translation table */
1208 case PIO_KEYMAPENT: /* set keyboard translation table entry */
1209 case PIO_DEADKEYMAP: /* set accent key translation table */
1210 #ifdef COMPAT_FREEBSD13
1211 case OPIO_KEYMAP: /* set keyboard translation table (compat) */
1212 case OPIO_DEADKEYMAP: /* set accent key translation table (compat) */
1213 #endif /* COMPAT_FREEBSD13 */
1214 state->ks_accents = 0;
1215 /* FALLTHROUGH */
1216
1217 default:
1218 VKBD_UNLOCK(state);
1219 return (genkbd_commonioctl(kbd, cmd, arg));
1220 }
1221
1222 VKBD_UNLOCK(state);
1223
1224 return (0);
1225 }
1226
1227 /* Lock the access to the keyboard */
1228 static int
vkbd_lock(keyboard_t * kbd,int lock)1229 vkbd_lock(keyboard_t *kbd, int lock)
1230 {
1231 return (1); /* XXX */
1232 }
1233
1234 /* Clear the internal state of the keyboard */
1235 static void
vkbd_clear_state_locked(vkbd_state_t * state)1236 vkbd_clear_state_locked(vkbd_state_t *state)
1237 {
1238 VKBD_LOCK_ASSERT(state, MA_OWNED);
1239
1240 state->ks_flags &= ~COMPOSE;
1241 state->ks_polling = 0;
1242 state->ks_state &= LOCK_MASK; /* preserve locking key state */
1243 state->ks_accents = 0;
1244 state->ks_composed_char = 0;
1245 /* state->ks_prefix = 0; XXX */
1246
1247 /* flush ks_inq and wakeup writers/poll()ers */
1248 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0;
1249 selwakeuppri(&state->ks_wsel, PZERO + 1);
1250 wakeup(&state->ks_inq);
1251 }
1252
1253 static void
vkbd_clear_state(keyboard_t * kbd)1254 vkbd_clear_state(keyboard_t *kbd)
1255 {
1256 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
1257
1258 VKBD_LOCK(state);
1259 vkbd_clear_state_locked(state);
1260 VKBD_UNLOCK(state);
1261 }
1262
1263 /* Save the internal state */
1264 static int
vkbd_get_state(keyboard_t * kbd,void * buf,size_t len)1265 vkbd_get_state(keyboard_t *kbd, void *buf, size_t len)
1266 {
1267 if (len == 0)
1268 return (sizeof(vkbd_state_t));
1269 if (len < sizeof(vkbd_state_t))
1270 return (-1);
1271 bcopy(kbd->kb_data, buf, sizeof(vkbd_state_t)); /* XXX locking? */
1272 return (0);
1273 }
1274
1275 /* Set the internal state */
1276 static int
vkbd_set_state(keyboard_t * kbd,void * buf,size_t len)1277 vkbd_set_state(keyboard_t *kbd, void *buf, size_t len)
1278 {
1279 if (len < sizeof(vkbd_state_t))
1280 return (ENOMEM);
1281 bcopy(buf, kbd->kb_data, sizeof(vkbd_state_t)); /* XXX locking? */
1282 return (0);
1283 }
1284
1285 /* Set polling */
1286 static int
vkbd_poll(keyboard_t * kbd,int on)1287 vkbd_poll(keyboard_t *kbd, int on)
1288 {
1289 vkbd_state_t *state = NULL;
1290
1291 state = (vkbd_state_t *) kbd->kb_data;
1292
1293 VKBD_LOCK(state);
1294
1295 if (on)
1296 state->ks_polling ++;
1297 else
1298 state->ks_polling --;
1299
1300 VKBD_UNLOCK(state);
1301
1302 return (0);
1303 }
1304
1305 /*
1306 * Local functions
1307 */
1308
1309 static int
typematic_delay(int i)1310 typematic_delay(int i)
1311 {
1312 return (kbdelays[(i >> 5) & 3]);
1313 }
1314
1315 static int
typematic_rate(int i)1316 typematic_rate(int i)
1317 {
1318 return (kbrates[i & 0x1f]);
1319 }
1320
1321 static int
typematic(int delay,int rate)1322 typematic(int delay, int rate)
1323 {
1324 int value;
1325 int i;
1326
1327 for (i = nitems(kbdelays) - 1; i > 0; i--) {
1328 if (delay >= kbdelays[i])
1329 break;
1330 }
1331 value = i << 5;
1332 for (i = nitems(kbrates) - 1; i > 0; i--) {
1333 if (rate >= kbrates[i])
1334 break;
1335 }
1336 value |= i;
1337 return (value);
1338 }
1339
1340 /*****************************************************************************
1341 *****************************************************************************
1342 ** Module
1343 *****************************************************************************
1344 *****************************************************************************/
1345
1346 KEYBOARD_DRIVER(vkbd, vkbdsw, vkbd_configure);
1347
1348 static int
vkbd_modevent(module_t mod,int type,void * data)1349 vkbd_modevent(module_t mod, int type, void *data)
1350 {
1351 static eventhandler_tag tag;
1352
1353 switch (type) {
1354 case MOD_LOAD:
1355 clone_setup(&vkbd_dev_clones);
1356 tag = EVENTHANDLER_REGISTER(dev_clone, vkbd_dev_clone, 0, 1000);
1357 if (tag == NULL) {
1358 clone_cleanup(&vkbd_dev_clones);
1359 return (ENOMEM);
1360 }
1361 kbd_add_driver(&vkbd_kbd_driver);
1362 break;
1363
1364 case MOD_UNLOAD:
1365 kbd_delete_driver(&vkbd_kbd_driver);
1366 EVENTHANDLER_DEREGISTER(dev_clone, tag);
1367 clone_cleanup(&vkbd_dev_clones);
1368 break;
1369
1370 default:
1371 return (EOPNOTSUPP);
1372 }
1373
1374 return (0);
1375 }
1376
1377 DEV_MODULE(vkbd, vkbd_modevent, NULL);
1378