FreeBSD/Linux Kernel Cross Reference
sys/dev/fb/fb.c
1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD: releng/12.0/sys/dev/fb/fb.c 326255 2017-11-27 14:52:40Z pfg $");
33
34 #include "opt_fb.h"
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/conf.h>
39 #include <sys/bus.h>
40 #include <sys/kernel.h>
41 #include <sys/malloc.h>
42 #include <sys/module.h>
43 #include <sys/uio.h>
44 #include <sys/fbio.h>
45 #include <sys/linker_set.h>
46
47 #include <vm/vm.h>
48 #include <vm/pmap.h>
49
50 #include <dev/fb/fbreg.h>
51
52 SET_DECLARE(videodriver_set, const video_driver_t);
53
54 /* local arrays */
55
56 /*
57 * We need at least one entry each in order to initialize a video card
58 * for the kernel console. The arrays will be increased dynamically
59 * when necessary.
60 */
61
62 static int vid_malloc;
63 static int adapters = 1;
64 static video_adapter_t *adp_ini;
65 static video_adapter_t **adapter = &adp_ini;
66 static video_switch_t *vidsw_ini;
67 video_switch_t **vidsw = &vidsw_ini;
68
69 #ifdef FB_INSTALL_CDEV
70 static struct cdevsw *vidcdevsw_ini;
71 static struct cdevsw **vidcdevsw = &vidcdevsw_ini;
72 #endif
73
74 #define ARRAY_DELTA 4
75
76 static int
77 vid_realloc_array(void)
78 {
79 video_adapter_t **new_adp;
80 video_switch_t **new_vidsw;
81 #ifdef FB_INSTALL_CDEV
82 struct cdevsw **new_cdevsw;
83 #endif
84 int newsize;
85 int s;
86
87 if (!vid_malloc)
88 return ENOMEM;
89
90 s = spltty();
91 newsize = rounddown(adapters + ARRAY_DELTA, ARRAY_DELTA);
92 new_adp = malloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK | M_ZERO);
93 new_vidsw = malloc(sizeof(*new_vidsw)*newsize, M_DEVBUF,
94 M_WAITOK | M_ZERO);
95 #ifdef FB_INSTALL_CDEV
96 new_cdevsw = malloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF,
97 M_WAITOK | M_ZERO);
98 #endif
99 bcopy(adapter, new_adp, sizeof(*adapter)*adapters);
100 bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters);
101 #ifdef FB_INSTALL_CDEV
102 bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters);
103 #endif
104 if (adapters > 1) {
105 free(adapter, M_DEVBUF);
106 free(vidsw, M_DEVBUF);
107 #ifdef FB_INSTALL_CDEV
108 free(vidcdevsw, M_DEVBUF);
109 #endif
110 }
111 adapter = new_adp;
112 vidsw = new_vidsw;
113 #ifdef FB_INSTALL_CDEV
114 vidcdevsw = new_cdevsw;
115 #endif
116 adapters = newsize;
117 splx(s);
118
119 if (bootverbose)
120 printf("fb: new array size %d\n", adapters);
121
122 return 0;
123 }
124
125 static void
126 vid_malloc_init(void *arg)
127 {
128 vid_malloc = TRUE;
129 }
130
131 SYSINIT(vid_mem, SI_SUB_KMEM, SI_ORDER_ANY, vid_malloc_init, NULL);
132
133 /*
134 * Low-level frame buffer driver functions
135 * frame buffer subdrivers, such as the VGA driver, call these functions
136 * to initialize the video_adapter structure and register it to the virtual
137 * frame buffer driver `fb'.
138 */
139
140 /* initialize the video_adapter_t structure */
141 void
142 vid_init_struct(video_adapter_t *adp, char *name, int type, int unit)
143 {
144 adp->va_flags = 0;
145 adp->va_name = name;
146 adp->va_type = type;
147 adp->va_unit = unit;
148 }
149
150 /* Register a video adapter */
151 int
152 vid_register(video_adapter_t *adp)
153 {
154 const video_driver_t **list;
155 const video_driver_t *p;
156 int index;
157
158 for (index = 0; index < adapters; ++index) {
159 if (adapter[index] == NULL)
160 break;
161 }
162 if (index >= adapters) {
163 if (vid_realloc_array())
164 return -1;
165 }
166
167 adp->va_index = index;
168 adp->va_token = NULL;
169 SET_FOREACH(list, videodriver_set) {
170 p = *list;
171 if (strcmp(p->name, adp->va_name) == 0) {
172 adapter[index] = adp;
173 vidsw[index] = p->vidsw;
174 return index;
175 }
176 }
177
178 return -1;
179 }
180
181 int
182 vid_unregister(video_adapter_t *adp)
183 {
184 if ((adp->va_index < 0) || (adp->va_index >= adapters))
185 return ENOENT;
186 if (adapter[adp->va_index] != adp)
187 return ENOENT;
188
189 adapter[adp->va_index] = NULL;
190 vidsw[adp->va_index] = NULL;
191 return 0;
192 }
193
194 /* Get video I/O function table */
195 video_switch_t
196 *vid_get_switch(char *name)
197 {
198 const video_driver_t **list;
199 const video_driver_t *p;
200
201 SET_FOREACH(list, videodriver_set) {
202 p = *list;
203 if (strcmp(p->name, name) == 0)
204 return p->vidsw;
205 }
206
207 return NULL;
208 }
209
210 /*
211 * Video card client functions
212 * Video card clients, such as the console driver `syscons' and the frame
213 * buffer cdev driver, use these functions to claim and release a card for
214 * exclusive use.
215 */
216
217 /* find the video card specified by a driver name and a unit number */
218 int
219 vid_find_adapter(char *driver, int unit)
220 {
221 int i;
222
223 for (i = 0; i < adapters; ++i) {
224 if (adapter[i] == NULL)
225 continue;
226 if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver))
227 continue;
228 if ((unit != -1) && (adapter[i]->va_unit != unit))
229 continue;
230 return i;
231 }
232 return -1;
233 }
234
235 /* allocate a video card */
236 int
237 vid_allocate(char *driver, int unit, void *id)
238 {
239 int index;
240 int s;
241
242 s = spltty();
243 index = vid_find_adapter(driver, unit);
244 if (index >= 0) {
245 if (adapter[index]->va_token) {
246 splx(s);
247 return -1;
248 }
249 adapter[index]->va_token = id;
250 }
251 splx(s);
252 return index;
253 }
254
255 int
256 vid_release(video_adapter_t *adp, void *id)
257 {
258 int error;
259 int s;
260
261 s = spltty();
262 if (adp->va_token == NULL) {
263 error = EINVAL;
264 } else if (adp->va_token != id) {
265 error = EPERM;
266 } else {
267 adp->va_token = NULL;
268 error = 0;
269 }
270 splx(s);
271 return error;
272 }
273
274 /* Get a video adapter structure */
275 video_adapter_t
276 *vid_get_adapter(int index)
277 {
278 if ((index < 0) || (index >= adapters))
279 return NULL;
280 return adapter[index];
281 }
282
283 /* Configure drivers: this is a backdoor for the console driver XXX */
284 int
285 vid_configure(int flags)
286 {
287 const video_driver_t **list;
288 const video_driver_t *p;
289
290 SET_FOREACH(list, videodriver_set) {
291 p = *list;
292 if (p->configure != NULL)
293 (*p->configure)(flags);
294 }
295
296 return 0;
297 }
298
299 /*
300 * Virtual frame buffer cdev driver functions
301 * The virtual frame buffer driver dispatches driver functions to
302 * appropriate subdrivers.
303 */
304
305 #define FB_DRIVER_NAME "fb"
306
307 #ifdef FB_INSTALL_CDEV
308
309 #if 0 /* experimental */
310
311 static devclass_t fb_devclass;
312
313 static int fbprobe(device_t dev);
314 static int fbattach(device_t dev);
315
316 static device_method_t fb_methods[] = {
317 DEVMETHOD(device_probe, fbprobe),
318 DEVMETHOD(device_attach, fbattach),
319
320 DEVMETHOD_END
321 };
322
323 static driver_t fb_driver = {
324 FB_DRIVER_NAME,
325 fb_methods,
326 0,
327 };
328
329 static int
330 fbprobe(device_t dev)
331 {
332 int unit;
333
334 unit = device_get_unit(dev);
335 if (unit >= adapters)
336 return ENXIO;
337 if (adapter[unit] == NULL)
338 return ENXIO;
339
340 device_set_desc(dev, "generic frame buffer");
341 return 0;
342 }
343
344 static int
345 fbattach(device_t dev)
346 {
347 printf("fbattach: about to attach children\n");
348 bus_generic_attach(dev);
349 return 0;
350 }
351
352 #endif
353
354 #define FB_UNIT(dev) dev2unit(dev)
355 #define FB_MKMINOR(unit) (u)
356
357 #if 0 /* experimental */
358 static d_open_t fbopen;
359 static d_close_t fbclose;
360 static d_read_t fbread;
361 static d_write_t fbwrite;
362 static d_ioctl_t fbioctl;
363 static d_mmap_t fbmmap;
364
365
366 static struct cdevsw fb_cdevsw = {
367 .d_version = D_VERSION,
368 .d_flags = D_NEEDGIANT,
369 .d_open = fbopen,
370 .d_close = fbclose,
371 .d_read = fbread,
372 .d_write = fbwrite,
373 .d_ioctl = fbioctl,
374 .d_mmap = fbmmap,
375 .d_name = FB_DRIVER_NAME,
376 };
377 #endif
378
379
380 static int
381 fb_modevent(module_t mod, int type, void *data)
382 {
383
384 switch (type) {
385 case MOD_LOAD:
386 break;
387 case MOD_UNLOAD:
388 printf("fb module unload - not possible for this module type\n");
389 return EINVAL;
390 default:
391 return EOPNOTSUPP;
392 }
393 return 0;
394 }
395
396 static moduledata_t fb_mod = {
397 "fb",
398 fb_modevent,
399 NULL
400 };
401
402 DECLARE_MODULE(fb, fb_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
403
404 int
405 fb_attach(int unit, video_adapter_t *adp, struct cdevsw *cdevsw)
406 {
407 int s;
408
409 if (adp->va_index >= adapters)
410 return EINVAL;
411 if (adapter[adp->va_index] != adp)
412 return EINVAL;
413
414 s = spltty();
415 adp->va_minor = unit;
416 vidcdevsw[adp->va_index] = cdevsw;
417 splx(s);
418
419 printf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit);
420 return 0;
421 }
422
423 int
424 fb_detach(int unit, video_adapter_t *adp, struct cdevsw *cdevsw)
425 {
426 int s;
427
428 if (adp->va_index >= adapters)
429 return EINVAL;
430 if (adapter[adp->va_index] != adp)
431 return EINVAL;
432 if (vidcdevsw[adp->va_index] != cdevsw)
433 return EINVAL;
434
435 s = spltty();
436 vidcdevsw[adp->va_index] = NULL;
437 splx(s);
438 return 0;
439 }
440
441 /*
442 * Generic frame buffer cdev driver functions
443 * Frame buffer subdrivers may call these functions to implement common
444 * driver functions.
445 */
446
447 int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
448 struct thread *td)
449 {
450 int s;
451
452 s = spltty();
453 if (!(sc->gfb_flags & FB_OPEN))
454 sc->gfb_flags |= FB_OPEN;
455 splx(s);
456 return 0;
457 }
458
459 int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
460 struct thread *td)
461 {
462 int s;
463
464 s = spltty();
465 sc->gfb_flags &= ~FB_OPEN;
466 splx(s);
467 return 0;
468 }
469
470 int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
471 int flag)
472 {
473 int size;
474 int offset;
475 int error;
476 int len;
477
478 error = 0;
479 size = adp->va_buffer_size/adp->va_info.vi_planes;
480 while (uio->uio_resid > 0) {
481 if (uio->uio_offset >= size)
482 break;
483 offset = uio->uio_offset%adp->va_window_size;
484 len = imin(uio->uio_resid, size - uio->uio_offset);
485 len = imin(len, adp->va_window_size - offset);
486 if (len <= 0)
487 break;
488 vidd_set_win_org(adp, uio->uio_offset);
489 error = uiomove((caddr_t)(adp->va_window + offset), len, uio);
490 if (error)
491 break;
492 }
493 return error;
494 }
495
496 int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
497 int flag)
498 {
499 return ENODEV;
500 }
501
502 int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd,
503 caddr_t arg, int flag, struct thread *td)
504 {
505 int error;
506
507 if (adp == NULL) /* XXX */
508 return ENXIO;
509 error = vidd_ioctl(adp, cmd, arg);
510 if (error == ENOIOCTL)
511 error = ENODEV;
512 return error;
513 }
514
515 int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_ooffset_t offset,
516 vm_offset_t *paddr, int prot, vm_memattr_t *memattr)
517 {
518 return vidd_mmap(adp, offset, paddr, prot, memattr);
519 }
520
521 #endif /* FB_INSTALL_CDEV */
522
523 static char
524 *adapter_name(int type)
525 {
526 static struct {
527 int type;
528 char *name;
529 } names[] = {
530 { KD_MONO, "MDA" },
531 { KD_HERCULES, "Hercules" },
532 { KD_CGA, "CGA" },
533 { KD_EGA, "EGA" },
534 { KD_VGA, "VGA" },
535 { KD_TGA, "TGA" },
536 { -1, "Unknown" },
537 };
538 int i;
539
540 for (i = 0; names[i].type != -1; ++i)
541 if (names[i].type == type)
542 break;
543 return names[i].name;
544 }
545
546 /*
547 * Generic low-level frame buffer functions
548 * The low-level functions in the frame buffer subdriver may use these
549 * functions.
550 */
551
552 void
553 fb_dump_adp_info(char *driver, video_adapter_t *adp, int level)
554 {
555 if (level <= 0)
556 return;
557
558 printf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n",
559 FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name,
560 adapter_name(adp->va_type), adp->va_type, adp->va_flags);
561 printf("%s%d: port:0x%lx-0x%lx, crtc:0x%lx, mem:0x%lx 0x%x\n",
562 FB_DRIVER_NAME, adp->va_index, (u_long)adp->va_io_base,
563 (u_long)adp->va_io_base + adp->va_io_size - 1,
564 (u_long)adp->va_crtc_addr, (u_long)adp->va_mem_base,
565 adp->va_mem_size);
566 printf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n",
567 FB_DRIVER_NAME, adp->va_index,
568 adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode);
569 printf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n",
570 FB_DRIVER_NAME, adp->va_index,
571 (void *)adp->va_window, (int)adp->va_window_size/1024,
572 (int)adp->va_window_gran/1024, (void *)adp->va_buffer,
573 (int)adp->va_buffer_size/1024);
574 }
575
576 void
577 fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info,
578 int level)
579 {
580 if (level <= 0)
581 return;
582
583 printf("%s%d: %s, mode:%d, flags:0x%x ",
584 driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags);
585 if (info->vi_flags & V_INFO_GRAPHICS)
586 printf("G %dx%dx%d, %d plane(s), font:%dx%d, ",
587 info->vi_width, info->vi_height,
588 info->vi_depth, info->vi_planes,
589 info->vi_cwidth, info->vi_cheight);
590 else
591 printf("T %dx%d, font:%dx%d, ",
592 info->vi_width, info->vi_height,
593 info->vi_cwidth, info->vi_cheight);
594 printf("win:0x%lx\n", (u_long)info->vi_window);
595 }
596
597 int
598 fb_type(int adp_type)
599 {
600 static struct {
601 int fb_type;
602 int va_type;
603 } types[] = {
604 { FBTYPE_MDA, KD_MONO },
605 { FBTYPE_HERCULES, KD_HERCULES },
606 { FBTYPE_CGA, KD_CGA },
607 { FBTYPE_EGA, KD_EGA },
608 { FBTYPE_VGA, KD_VGA },
609 { FBTYPE_TGA, KD_TGA },
610 };
611 int i;
612
613 for (i = 0; i < nitems(types); ++i) {
614 if (types[i].va_type == adp_type)
615 return types[i].fb_type;
616 }
617 return -1;
618 }
619
620 int
621 fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
622 {
623 int error;
624 int s;
625
626 /* assert(adp != NULL) */
627
628 error = 0;
629 s = spltty();
630
631 switch (cmd) {
632
633 case FBIO_ADAPTER: /* get video adapter index */
634 *(int *)arg = adp->va_index;
635 break;
636
637 case FBIO_ADPTYPE: /* get video adapter type */
638 *(int *)arg = adp->va_type;
639 break;
640
641 case FBIO_ADPINFO: /* get video adapter info */
642 ((video_adapter_info_t *)arg)->va_index = adp->va_index;
643 ((video_adapter_info_t *)arg)->va_type = adp->va_type;
644 bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name,
645 imin(strlen(adp->va_name) + 1,
646 sizeof(((video_adapter_info_t *)arg)->va_name)));
647 ((video_adapter_info_t *)arg)->va_unit = adp->va_unit;
648 ((video_adapter_info_t *)arg)->va_flags = adp->va_flags;
649 ((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base;
650 ((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size;
651 ((video_adapter_info_t *)arg)->va_crtc_addr = adp->va_crtc_addr;
652 ((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base;
653 ((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size;
654 ((video_adapter_info_t *)arg)->va_window
655 #if defined(__amd64__) || defined(__i386__)
656 = vtophys(adp->va_window);
657 #else
658 = adp->va_window;
659 #endif
660 ((video_adapter_info_t *)arg)->va_window_size
661 = adp->va_window_size;
662 ((video_adapter_info_t *)arg)->va_window_gran
663 = adp->va_window_gran;
664 ((video_adapter_info_t *)arg)->va_window_orig
665 = adp->va_window_orig;
666 ((video_adapter_info_t *)arg)->va_unused0
667 #if defined(__amd64__) || defined(__i386__)
668 = adp->va_buffer != 0 ? vtophys(adp->va_buffer) : 0;
669 #else
670 = adp->va_buffer;
671 #endif
672 ((video_adapter_info_t *)arg)->va_buffer_size
673 = adp->va_buffer_size;
674 ((video_adapter_info_t *)arg)->va_mode = adp->va_mode;
675 ((video_adapter_info_t *)arg)->va_initial_mode
676 = adp->va_initial_mode;
677 ((video_adapter_info_t *)arg)->va_initial_bios_mode
678 = adp->va_initial_bios_mode;
679 ((video_adapter_info_t *)arg)->va_line_width
680 = adp->va_line_width;
681 ((video_adapter_info_t *)arg)->va_disp_start.x
682 = adp->va_disp_start.x;
683 ((video_adapter_info_t *)arg)->va_disp_start.y
684 = adp->va_disp_start.y;
685 break;
686
687 case FBIO_MODEINFO: /* get mode information */
688 error = vidd_get_info(adp,
689 ((video_info_t *)arg)->vi_mode,
690 (video_info_t *)arg);
691 if (error)
692 error = ENODEV;
693 break;
694
695 case FBIO_FINDMODE: /* find a matching video mode */
696 error = vidd_query_mode(adp, (video_info_t *)arg);
697 break;
698
699 case FBIO_GETMODE: /* get video mode */
700 *(int *)arg = adp->va_mode;
701 break;
702
703 case FBIO_SETMODE: /* set video mode */
704 error = vidd_set_mode(adp, *(int *)arg);
705 if (error)
706 error = ENODEV; /* EINVAL? */
707 break;
708
709 case FBIO_GETWINORG: /* get frame buffer window origin */
710 *(u_int *)arg = adp->va_window_orig;
711 break;
712
713 case FBIO_GETDISPSTART: /* get display start address */
714 ((video_display_start_t *)arg)->x = adp->va_disp_start.x;
715 ((video_display_start_t *)arg)->y = adp->va_disp_start.y;
716 break;
717
718 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
719 *(u_int *)arg = adp->va_line_width;
720 break;
721
722 case FBIO_BLANK: /* blank display */
723 error = vidd_blank_display(adp, *(int *)arg);
724 break;
725
726 case FBIO_GETPALETTE: /* get color palette */
727 case FBIO_SETPALETTE: /* set color palette */
728 /* XXX */
729
730 case FBIOPUTCMAP:
731 case FBIOGETCMAP:
732 case FBIOPUTCMAPI:
733 case FBIOGETCMAPI:
734 /* XXX */
735
736 case FBIO_SETWINORG: /* set frame buffer window origin */
737 case FBIO_SETDISPSTART: /* set display start address */
738 case FBIO_SETLINEWIDTH: /* set scan line width in pixel */
739
740 case FBIOGTYPE:
741 case FBIOGATTR:
742 case FBIOSVIDEO:
743 case FBIOGVIDEO:
744 case FBIOVERTICAL:
745 case FBIOSCURSOR:
746 case FBIOGCURSOR:
747 case FBIOSCURPOS:
748 case FBIOGCURPOS:
749 case FBIOGCURMAX:
750 case FBIOMONINFO:
751 case FBIOGXINFO:
752
753 default:
754 error = ENODEV;
755 break;
756 }
757
758 splx(s);
759 return error;
760 }
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