1 /*-
2 * (MPSAFE)
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 * $FreeBSD: src/sys/dev/fb/fb.c,v 1.11.2.2 2000/08/02 22:35:22 peter Exp $
31 */
32
33 #include "opt_fb.h"
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/conf.h>
38 #include <sys/bus.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/uio.h>
42 #include <sys/fbio.h>
43 #include <sys/linker_set.h>
44 #include <sys/device.h>
45 #include <sys/thread2.h>
46
47 #include <vm/vm.h>
48 #include <vm/pmap.h>
49
50 #include "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 cdev_t vidcdevsw_ini;
71 static cdev_t *vidcdevsw = &vidcdevsw_ini;
72 #endif
73
74 #define ARRAY_DELTA 4
75
76 static int
vid_realloc_array(void)77 vid_realloc_array(void)
78 {
79 video_adapter_t **new_adp;
80 video_switch_t **new_vidsw;
81 #ifdef FB_INSTALL_CDEV
82 cdev_t *new_cdevsw;
83 #endif
84 int newsize;
85
86 if (!vid_malloc)
87 return ENOMEM;
88
89 crit_enter();
90 newsize = rounddown(adapters + ARRAY_DELTA, ARRAY_DELTA);
91 new_adp = kmalloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK | M_ZERO);
92 new_vidsw = kmalloc(sizeof(*new_vidsw)*newsize, M_DEVBUF,
93 M_WAITOK | M_ZERO);
94 #ifdef FB_INSTALL_CDEV
95 new_cdevsw = kmalloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF,
96 M_WAITOK | M_ZERO);
97 #endif
98 bcopy(adapter, new_adp, sizeof(*adapter)*adapters);
99 bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters);
100 #ifdef FB_INSTALL_CDEV
101 bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters);
102 #endif
103 if (adapters > 1) {
104 kfree(adapter, M_DEVBUF);
105 kfree(vidsw, M_DEVBUF);
106 #ifdef FB_INSTALL_CDEV
107 kfree(vidcdevsw, M_DEVBUF);
108 #endif
109 }
110 adapter = new_adp;
111 vidsw = new_vidsw;
112 #ifdef FB_INSTALL_CDEV
113 vidcdevsw = new_cdevsw;
114 #endif
115 adapters = newsize;
116 crit_exit();
117
118 if (bootverbose)
119 kprintf("fb: new array size %d\n", adapters);
120
121 return 0;
122 }
123
124 static void
vid_malloc_init(void * arg)125 vid_malloc_init(void *arg)
126 {
127 vid_malloc = TRUE;
128 }
129
130 SYSINIT(vid_mem, SI_BOOT1_POST, SI_ORDER_ANY, vid_malloc_init, NULL);
131
132 /*
133 * Low-level frame buffer driver functions
134 * frame buffer subdrivers, such as the VGA driver, call these functions
135 * to initialize the video_adapter structure and register it to the virtual
136 * frame buffer driver `fb'.
137 */
138
139 /* initialize the video_adapter_t structure */
140 void
vid_init_struct(video_adapter_t * adp,char * name,int type,int unit)141 vid_init_struct(video_adapter_t *adp, char *name, int type, int unit)
142 {
143 adp->va_flags = 0;
144 adp->va_name = name;
145 adp->va_type = type;
146 adp->va_unit = unit;
147 }
148
149 /* Register a video adapter */
150 int
vid_register(video_adapter_t * adp)151 vid_register(video_adapter_t *adp)
152 {
153 const video_driver_t **list;
154 const video_driver_t *p;
155 int index;
156
157 for (index = 0; index < adapters; ++index) {
158 if (adapter[index] == NULL)
159 break;
160 }
161 if (index >= adapters) {
162 if (vid_realloc_array())
163 return -1;
164 }
165
166 adp->va_index = index;
167 adp->va_token = NULL;
168 lwkt_gettoken(&vga_token);
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 lwkt_reltoken(&vga_token);
175 return index;
176 }
177 }
178
179 lwkt_reltoken(&vga_token);
180 return -1;
181 }
182
183 int
vid_unregister(video_adapter_t * adp)184 vid_unregister(video_adapter_t *adp)
185 {
186 lwkt_gettoken(&vga_token);
187 if ((adp->va_index < 0) || (adp->va_index >= adapters)) {
188 lwkt_reltoken(&vga_token);
189 return ENOENT;
190 }
191 if (adapter[adp->va_index] != adp) {
192 lwkt_reltoken(&vga_token);
193 return ENOENT;
194 }
195
196 adapter[adp->va_index] = NULL;
197 vidsw[adp->va_index] = NULL;
198 lwkt_reltoken(&vga_token);
199 return 0;
200 }
201
202 /* Get video I/O function table */
203 video_switch_t *
vid_get_switch(char * name)204 vid_get_switch(char *name)
205 {
206 const video_driver_t **list;
207 const video_driver_t *p;
208
209 lwkt_gettoken(&vga_token);
210 SET_FOREACH(list, videodriver_set) {
211 p = *list;
212 if (strcmp(p->name, name) == 0) {
213 lwkt_reltoken(&vga_token);
214 return p->vidsw;
215 }
216 }
217
218 lwkt_reltoken(&vga_token);
219 return NULL;
220 }
221
222 /*
223 * Video card client functions
224 * Video card clients, such as the console driver `syscons' and the frame
225 * buffer cdev driver, use these functions to claim and release a card for
226 * exclusive use.
227 */
228
229 /* find the video card specified by a driver name and a unit number */
230 int
vid_find_adapter(char * driver,int unit)231 vid_find_adapter(char *driver, int unit)
232 {
233 int i;
234
235 for (i = 0; i < adapters; ++i) {
236 if (adapter[i] == NULL)
237 continue;
238 if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver))
239 continue;
240 if ((unit != -1) && (adapter[i]->va_unit != unit))
241 continue;
242 return i;
243 }
244 return -1;
245 }
246
247 /* allocate a video card */
248 int
vid_allocate(char * driver,int unit,void * id)249 vid_allocate(char *driver, int unit, void *id)
250 {
251 int index;
252
253 crit_enter();
254 index = vid_find_adapter(driver, unit);
255 if (index >= 0) {
256 if (adapter[index]->va_token) {
257 crit_exit();
258 return -1;
259 }
260 adapter[index]->va_token = id;
261 }
262 crit_exit();
263 return index;
264 }
265
266 int
vid_release(video_adapter_t * adp,void * id)267 vid_release(video_adapter_t *adp, void *id)
268 {
269 int error;
270
271 crit_enter();
272 if (adp->va_token == NULL) {
273 error = EINVAL;
274 } else if (adp->va_token != id) {
275 error = EPERM;
276 } else {
277 adp->va_token = NULL;
278 error = 0;
279 }
280 crit_exit();
281 return error;
282 }
283
284 /* Get a video adapter structure */
285 video_adapter_t *
vid_get_adapter(int index)286 vid_get_adapter(int index)
287 {
288 if ((index < 0) || (index >= adapters))
289 return NULL;
290 return adapter[index];
291 }
292
293 /* Configure drivers: this is a backdoor for the console driver XXX */
294 int
vid_configure(int flags)295 vid_configure(int flags)
296 {
297 const video_driver_t **list;
298 const video_driver_t *p;
299
300 SET_FOREACH(list, videodriver_set) {
301 p = *list;
302 if (p->configure != NULL)
303 (*p->configure)(flags);
304 }
305
306 return 0;
307 }
308
309 /*
310 * Virtual frame buffer cdev driver functions
311 * The virtual frame buffer driver dispatches driver functions to
312 * appropriate subdrivers.
313 */
314
315 #define FB_DRIVER_NAME "fb"
316
317 #ifdef FB_INSTALL_CDEV
318
319 #if 0 /* experimental */
320
321 static devclass_t fb_devclass;
322
323 static int fbprobe(device_t dev);
324 static int fbattach(device_t dev);
325
326 static device_method_t fb_methods[] = {
327 DEVMETHOD(device_probe, fbprobe),
328 DEVMETHOD(device_attach, fbattach),
329
330 DEVMETHOD(bus_print_child, bus_generic_print_child),
331 DEVMETHOD_END
332 };
333
334 static driver_t fb_driver = {
335 FB_DRIVER_NAME,
336 fb_methods,
337 0,
338 };
339
340 static int
341 fbprobe(device_t dev)
342 {
343 int unit;
344
345 unit = device_get_unit(dev);
346 if (unit >= adapters)
347 return ENXIO;
348 if (adapter[unit] == NULL)
349 return ENXIO;
350
351 device_set_desc(dev, "generic frame buffer");
352 return 0;
353 }
354
355 static int
356 fbattach(device_t dev)
357 {
358 kprintf("fbattach: about to attach children\n");
359 bus_generic_attach(dev);
360 return 0;
361 }
362
363 #endif /* experimental */
364
365 #define FB_UNIT(dev) minor(dev)
366 #define FB_MKMINOR(unit) (u)
367
368 #if 0
369 static d_default_t fboperate;
370 static d_open_t fbopen;
371
372 static struct dev_ops fb_ops = {
373 { FB_DRIVER_NAME, 0, 0 },
374 .d_default = fboperate,
375 .d_open = fbopen
376 };
377 #endif
378
379 static void
vfbattach(void * arg)380 vfbattach(void *arg)
381 {
382 static int fb_devsw_installed = FALSE;
383
384 if (!fb_devsw_installed) {
385 #if 0
386 dev_ops_add(&fb_ops, 0, 0);
387 #endif
388 fb_devsw_installed = TRUE;
389 }
390 }
391
392 PSEUDO_SET(vfbattach, fb);
393
394 /*
395 * Note: dev represents the actual video device, not the frame buffer
396 */
397 int
fb_attach(cdev_t dev,video_adapter_t * adp)398 fb_attach(cdev_t dev, video_adapter_t *adp)
399 {
400 if (adp->va_index >= adapters)
401 return EINVAL;
402 if (adapter[adp->va_index] != adp)
403 return EINVAL;
404
405 crit_enter();
406 reference_dev(dev);
407 adp->va_minor = minor(dev);
408 vidcdevsw[adp->va_index] = dev;
409 crit_exit();
410
411 kprintf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit);
412 return 0;
413 }
414
415 /*
416 * Note: dev represents the actual video device, not the frame buffer
417 */
418 int
fb_detach(cdev_t dev,video_adapter_t * adp)419 fb_detach(cdev_t dev, video_adapter_t *adp)
420 {
421 if (adp->va_index >= adapters)
422 return EINVAL;
423 if (adapter[adp->va_index] != adp)
424 return EINVAL;
425 if (vidcdevsw[adp->va_index] != dev)
426 return EINVAL;
427
428 crit_enter();
429 vidcdevsw[adp->va_index] = NULL;
430 crit_exit();
431 release_dev(dev);
432 return 0;
433 }
434
435 #if 0
436 static int
437 fbopen(struct dev_open_args *ap)
438 {
439 cdev_t dev = ap->a_head.a_dev;
440 int unit;
441 cdev_t fdev;
442
443 unit = FB_UNIT(dev);
444 if (unit < 0 || unit >= adapters)
445 return ENXIO;
446 if ((fdev = vidcdevsw[unit]) == NULL)
447 return ENXIO;
448 return dev_dopen(fdev, ap->a_oflags, ap->a_devtype, ap->a_cred, NULL);
449 }
450
451 static int
452 fboperate(struct dev_generic_args *ap)
453 {
454 cdev_t dev = ap->a_dev;
455 int unit;
456 cdev_t fdev;
457
458 unit = FB_UNIT(dev);
459 if ((fdev = vidcdevsw[unit]) == NULL)
460 return ENXIO;
461 ap->a_dev = fdev;
462 return dev_doperate(ap);
463 }
464 #endif
465
466 /*
467 * Generic frame buffer cdev driver functions
468 * Frame buffer subdrivers may call these functions to implement common
469 * driver functions.
470 */
471
genfbopen(genfb_softc_t * sc,video_adapter_t * adp,int flag,int mode,struct ucred * cred)472 int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
473 struct ucred *cred)
474 {
475 crit_enter();
476 if (!(sc->gfb_flags & FB_OPEN))
477 sc->gfb_flags |= FB_OPEN;
478 crit_exit();
479 return 0;
480 }
481
genfbclose(genfb_softc_t * sc,video_adapter_t * adp,int flag,int mode)482 int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode)
483 {
484 crit_enter();
485 sc->gfb_flags &= ~FB_OPEN;
486 crit_exit();
487 return 0;
488 }
489
genfbread(genfb_softc_t * sc,video_adapter_t * adp,struct uio * uio,int flag)490 int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
491 int flag)
492 {
493 int size;
494 int offset;
495 int error;
496 int len;
497
498 lwkt_gettoken(&vga_token);
499 error = 0;
500 size = adp->va_buffer_size/adp->va_info.vi_planes;
501 while (uio->uio_resid > 0) {
502 if (uio->uio_offset >= size)
503 break;
504 offset = uio->uio_offset%adp->va_window_size;
505 len = (int)szmin(uio->uio_resid, size - uio->uio_offset);
506 len = imin(len, adp->va_window_size - offset);
507 if (len <= 0)
508 break;
509 (*vidsw[adp->va_index]->set_win_org)(adp, uio->uio_offset);
510 error = uiomove((caddr_t)(adp->va_window + offset),
511 (size_t)len, uio);
512 if (error)
513 break;
514 }
515 lwkt_reltoken(&vga_token);
516 return error;
517 }
518
genfbwrite(genfb_softc_t * sc,video_adapter_t * adp,struct uio * uio,int flag)519 int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
520 int flag)
521 {
522 return ENODEV;
523 }
524
genfbioctl(genfb_softc_t * sc,video_adapter_t * adp,u_long cmd,caddr_t arg,int flag,struct ucred * cred)525 int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd,
526 caddr_t arg, int flag, struct ucred *cred)
527 {
528 int error;
529
530 if (adp == NULL) /* XXX */
531 return ENXIO;
532 lwkt_gettoken(&vga_token);
533 error = (*vidsw[adp->va_index]->ioctl)(adp, cmd, arg);
534 if (error == ENOIOCTL)
535 error = ENODEV;
536 lwkt_reltoken(&vga_token);
537 return error;
538 }
539
genfbmmap(genfb_softc_t * sc,video_adapter_t * adp,vm_offset_t offset,int prot)540 int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_offset_t offset,
541 int prot)
542 {
543 int error;
544
545 lwkt_gettoken(&vga_token);
546 error = (*vidsw[adp->va_index]->mmap)(adp, offset, prot);
547 lwkt_reltoken(&vga_token);
548 return (error);
549 }
550
551 #endif /* FB_INSTALL_CDEV */
552
553 static char *
adapter_name(int type)554 adapter_name(int type)
555 {
556 static struct {
557 int type;
558 char *name;
559 } names[] = {
560 { KD_MONO, "MDA" },
561 { KD_HERCULES, "Hercules" },
562 { KD_CGA, "CGA" },
563 { KD_EGA, "EGA" },
564 { KD_VGA, "VGA" },
565 { KD_TGA, "TGA" },
566 { -1, "Unknown" },
567 };
568 int i;
569
570 for (i = 0; names[i].type != -1; ++i)
571 if (names[i].type == type)
572 break;
573 return names[i].name;
574 }
575
576 /*
577 * Generic low-level frame buffer functions
578 * The low-level functions in the frame buffer subdriver may use these
579 * functions.
580 */
581
582 void
fb_dump_adp_info(char * driver,video_adapter_t * adp,int level)583 fb_dump_adp_info(char *driver, video_adapter_t *adp, int level)
584 {
585 if (level <= 0)
586 return;
587
588 kprintf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n",
589 FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name,
590 adapter_name(adp->va_type), adp->va_type, adp->va_flags);
591 kprintf("%s%d: port:0x%x-0x%x, mem:0x%x 0x%x\n",
592 FB_DRIVER_NAME, adp->va_index,
593 adp->va_io_base, adp->va_io_base + adp->va_io_size - 1,
594 adp->va_mem_base, adp->va_mem_size);
595 kprintf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n",
596 FB_DRIVER_NAME, adp->va_index,
597 adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode);
598 kprintf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n",
599 FB_DRIVER_NAME, adp->va_index,
600 (void *)adp->va_window, (int)adp->va_window_size/1024,
601 (int)adp->va_window_gran/1024, (void *)adp->va_buffer,
602 (int)adp->va_buffer_size/1024);
603 }
604
605 void
fb_dump_mode_info(char * driver,video_adapter_t * adp,video_info_t * info,int level)606 fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info,
607 int level)
608 {
609 if (level <= 0)
610 return;
611
612 kprintf("%s%d: %s, mode:%d, flags:0x%x ",
613 driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags);
614 if (info->vi_flags & V_INFO_GRAPHICS)
615 kprintf("G %dx%dx%d, %d plane(s), font:%dx%d, ",
616 info->vi_width, info->vi_height,
617 info->vi_depth, info->vi_planes,
618 info->vi_cwidth, info->vi_cheight);
619 else
620 kprintf("T %dx%d, font:%dx%d, ",
621 info->vi_width, info->vi_height,
622 info->vi_cwidth, info->vi_cheight);
623 kprintf("win:0x%x\n", info->vi_window);
624 }
625
626 int
fb_type(int adp_type)627 fb_type(int adp_type)
628 {
629 static struct {
630 int fb_type;
631 int va_type;
632 } types[] = {
633 { FBTYPE_MDA, KD_MONO },
634 { FBTYPE_HERCULES, KD_HERCULES },
635 { FBTYPE_CGA, KD_CGA },
636 { FBTYPE_EGA, KD_EGA },
637 { FBTYPE_VGA, KD_VGA },
638 { FBTYPE_TGA, KD_TGA },
639 };
640 int i;
641
642 for (i = 0; i < NELEM(types); ++i) {
643 if (types[i].va_type == adp_type)
644 return types[i].fb_type;
645 }
646 return -1;
647 }
648
649 int
fb_commonioctl(video_adapter_t * adp,u_long cmd,caddr_t arg)650 fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
651 {
652 int error;
653
654 /* assert(adp != NULL) */
655
656 error = 0;
657 crit_enter();
658
659 lwkt_gettoken(&vga_token);
660 switch (cmd) {
661
662 case FBIO_ADAPTER: /* get video adapter index */
663 *(int *)arg = adp->va_index;
664 break;
665
666 case FBIO_ADPTYPE: /* get video adapter type */
667 *(int *)arg = adp->va_type;
668 break;
669
670 case FBIO_ADPINFO: /* get video adapter info */
671 ((video_adapter_info_t *)arg)->va_index = adp->va_index;
672 ((video_adapter_info_t *)arg)->va_type = adp->va_type;
673 bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name,
674 imin(strlen(adp->va_name) + 1,
675 sizeof(((video_adapter_info_t *)arg)->va_name)));
676 ((video_adapter_info_t *)arg)->va_unit = adp->va_unit;
677 ((video_adapter_info_t *)arg)->va_flags = adp->va_flags;
678 ((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base;
679 ((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size;
680 ((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base;
681 ((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size;
682 ((video_adapter_info_t *)arg)->va_window = adp->va_window;
683 ((video_adapter_info_t *)arg)->va_window_size
684 = adp->va_window_size;
685 ((video_adapter_info_t *)arg)->va_window_gran
686 = adp->va_window_gran;
687 ((video_adapter_info_t *)arg)->va_window_orig
688 = adp->va_window_orig;
689 ((video_adapter_info_t *)arg)->va_unused0 = adp->va_buffer;
690 ((video_adapter_info_t *)arg)->va_buffer_size
691 = adp->va_buffer_size;
692 ((video_adapter_info_t *)arg)->va_mode = adp->va_mode;
693 ((video_adapter_info_t *)arg)->va_initial_mode
694 = adp->va_initial_mode;
695 ((video_adapter_info_t *)arg)->va_initial_bios_mode
696 = adp->va_initial_bios_mode;
697 ((video_adapter_info_t *)arg)->va_line_width
698 = adp->va_line_width;
699 ((video_adapter_info_t *)arg)->va_disp_start.x
700 = adp->va_disp_start.x;
701 ((video_adapter_info_t *)arg)->va_disp_start.y
702 = adp->va_disp_start.y;
703 break;
704
705 case FBIO_MODEINFO: /* get mode information */
706 error = (*vidsw[adp->va_index]->get_info)(adp,
707 ((video_info_t *)arg)->vi_mode,
708 (video_info_t *)arg);
709 if (error)
710 error = ENODEV;
711 break;
712
713 case FBIO_FINDMODE: /* find a matching video mode */
714 error = (*vidsw[adp->va_index]->query_mode)(adp,
715 (video_info_t *)arg);
716 break;
717
718 case FBIO_GETMODE: /* get video mode */
719 *(int *)arg = adp->va_mode;
720 break;
721
722 case FBIO_SETMODE: /* set video mode */
723 error = (*vidsw[adp->va_index]->set_mode)(adp, *(int *)arg);
724 if (error)
725 error = ENODEV; /* EINVAL? */
726 break;
727
728 case FBIO_GETWINORG: /* get frame buffer window origin */
729 *(u_int *)arg = adp->va_window_orig;
730 break;
731
732 case FBIO_GETDISPSTART: /* get display start address */
733 ((video_display_start_t *)arg)->x = adp->va_disp_start.x;
734 ((video_display_start_t *)arg)->y = adp->va_disp_start.y;
735 break;
736
737 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
738 *(u_int *)arg = adp->va_line_width;
739 break;
740
741 case FBIO_GETPALETTE: /* get color palette */
742 case FBIO_SETPALETTE: /* set color palette */
743 /* XXX */
744
745 case FBIOPUTCMAP:
746 case FBIOGETCMAP:
747 /* XXX */
748
749 case FBIO_SETWINORG: /* set frame buffer window origin */
750 case FBIO_SETDISPSTART: /* set display start address */
751 case FBIO_SETLINEWIDTH: /* set scan line width in pixel */
752
753 case FBIOGTYPE:
754 case FBIOGATTR:
755 case FBIOSVIDEO:
756 case FBIOGVIDEO:
757 case FBIOSCURSOR:
758 case FBIOGCURSOR:
759 case FBIOSCURPOS:
760 case FBIOGCURPOS:
761 case FBIOGCURMAX:
762
763 default:
764 error = ENODEV;
765 break;
766 }
767
768 crit_exit();
769 lwkt_reltoken(&vga_token);
770 return error;
771 }
772