1 /*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 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. 27 * 28 * $FreeBSD: src/sys/dev/fb/fb.c,v 1.11.2.2 2000/08/02 22:35:22 peter Exp $ 29 * $DragonFly: src/sys/dev/video/fb/fb.c,v 1.19 2008/01/09 21:29:11 swildner Exp $ 30 */ 31 32 #include "opt_fb.h" 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/conf.h> 37 #include <sys/bus.h> 38 #include <sys/kernel.h> 39 #include <sys/malloc.h> 40 #include <sys/uio.h> 41 #include <sys/fbio.h> 42 #include <sys/linker_set.h> 43 #include <sys/device.h> 44 #include <sys/thread2.h> 45 46 #include <vm/vm.h> 47 #include <vm/pmap.h> 48 49 #include "fbreg.h" 50 51 SET_DECLARE(videodriver_set, const video_driver_t); 52 53 /* local arrays */ 54 55 /* 56 * We need at least one entry each in order to initialize a video card 57 * for the kernel console. The arrays will be increased dynamically 58 * when necessary. 59 */ 60 61 static int vid_malloc; 62 static int adapters = 1; 63 static video_adapter_t *adp_ini; 64 static video_adapter_t **adapter = &adp_ini; 65 static video_switch_t *vidsw_ini; 66 video_switch_t **vidsw = &vidsw_ini; 67 68 #ifdef FB_INSTALL_CDEV 69 static cdev_t vidcdevsw_ini; 70 static cdev_t *vidcdevsw = &vidcdevsw_ini; 71 #endif 72 73 #define ARRAY_DELTA 4 74 75 static int 76 vid_realloc_array(void) 77 { 78 video_adapter_t **new_adp; 79 video_switch_t **new_vidsw; 80 #ifdef FB_INSTALL_CDEV 81 cdev_t *new_cdevsw; 82 #endif 83 int newsize; 84 85 if (!vid_malloc) 86 return ENOMEM; 87 88 crit_enter(); 89 newsize = ((adapters + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA; 90 new_adp = kmalloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK | M_ZERO); 91 new_vidsw = kmalloc(sizeof(*new_vidsw)*newsize, M_DEVBUF, 92 M_WAITOK | M_ZERO); 93 #ifdef FB_INSTALL_CDEV 94 new_cdevsw = kmalloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF, 95 M_WAITOK | M_ZERO); 96 #endif 97 bcopy(adapter, new_adp, sizeof(*adapter)*adapters); 98 bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters); 99 #ifdef FB_INSTALL_CDEV 100 bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters); 101 #endif 102 if (adapters > 1) { 103 kfree(adapter, M_DEVBUF); 104 kfree(vidsw, M_DEVBUF); 105 #ifdef FB_INSTALL_CDEV 106 kfree(vidcdevsw, M_DEVBUF); 107 #endif 108 } 109 adapter = new_adp; 110 vidsw = new_vidsw; 111 #ifdef FB_INSTALL_CDEV 112 vidcdevsw = new_cdevsw; 113 #endif 114 adapters = newsize; 115 crit_exit(); 116 117 if (bootverbose) 118 kprintf("fb: new array size %d\n", adapters); 119 120 return 0; 121 } 122 123 static void 124 vid_malloc_init(void *arg) 125 { 126 vid_malloc = TRUE; 127 } 128 129 SYSINIT(vid_mem, SI_BOOT1_POST, SI_ORDER_ANY, vid_malloc_init, NULL); 130 131 /* 132 * Low-level frame buffer driver functions 133 * frame buffer subdrivers, such as the VGA driver, call these functions 134 * to initialize the video_adapter structure and register it to the virtual 135 * frame buffer driver `fb'. 136 */ 137 138 /* initialize the video_adapter_t structure */ 139 void 140 vid_init_struct(video_adapter_t *adp, char *name, int type, int unit) 141 { 142 adp->va_flags = 0; 143 adp->va_name = name; 144 adp->va_type = type; 145 adp->va_unit = unit; 146 } 147 148 /* Register a video adapter */ 149 int 150 vid_register(video_adapter_t *adp) 151 { 152 const video_driver_t **list; 153 const video_driver_t *p; 154 int index; 155 156 for (index = 0; index < adapters; ++index) { 157 if (adapter[index] == NULL) 158 break; 159 } 160 if (index >= adapters) { 161 if (vid_realloc_array()) 162 return -1; 163 } 164 165 adp->va_index = index; 166 adp->va_token = NULL; 167 SET_FOREACH(list, videodriver_set) { 168 p = *list; 169 if (strcmp(p->name, adp->va_name) == 0) { 170 adapter[index] = adp; 171 vidsw[index] = p->vidsw; 172 return index; 173 } 174 } 175 176 return -1; 177 } 178 179 int 180 vid_unregister(video_adapter_t *adp) 181 { 182 if ((adp->va_index < 0) || (adp->va_index >= adapters)) 183 return ENOENT; 184 if (adapter[adp->va_index] != adp) 185 return ENOENT; 186 187 adapter[adp->va_index] = NULL; 188 vidsw[adp->va_index] = NULL; 189 return 0; 190 } 191 192 /* Get video I/O function table */ 193 video_switch_t * 194 vid_get_switch(char *name) 195 { 196 const video_driver_t **list; 197 const video_driver_t *p; 198 199 SET_FOREACH(list, videodriver_set) { 200 p = *list; 201 if (strcmp(p->name, name) == 0) 202 return p->vidsw; 203 } 204 205 return NULL; 206 } 207 208 /* 209 * Video card client functions 210 * Video card clients, such as the console driver `syscons' and the frame 211 * buffer cdev driver, use these functions to claim and release a card for 212 * exclusive use. 213 */ 214 215 /* find the video card specified by a driver name and a unit number */ 216 int 217 vid_find_adapter(char *driver, int unit) 218 { 219 int i; 220 221 for (i = 0; i < adapters; ++i) { 222 if (adapter[i] == NULL) 223 continue; 224 if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver)) 225 continue; 226 if ((unit != -1) && (adapter[i]->va_unit != unit)) 227 continue; 228 return i; 229 } 230 return -1; 231 } 232 233 /* allocate a video card */ 234 int 235 vid_allocate(char *driver, int unit, void *id) 236 { 237 int index; 238 239 crit_enter(); 240 index = vid_find_adapter(driver, unit); 241 if (index >= 0) { 242 if (adapter[index]->va_token) { 243 crit_exit(); 244 return -1; 245 } 246 adapter[index]->va_token = id; 247 } 248 crit_exit(); 249 return index; 250 } 251 252 int 253 vid_release(video_adapter_t *adp, void *id) 254 { 255 int error; 256 257 crit_enter(); 258 if (adp->va_token == NULL) { 259 error = EINVAL; 260 } else if (adp->va_token != id) { 261 error = EPERM; 262 } else { 263 adp->va_token = NULL; 264 error = 0; 265 } 266 crit_exit(); 267 return error; 268 } 269 270 /* Get a video adapter structure */ 271 video_adapter_t * 272 vid_get_adapter(int index) 273 { 274 if ((index < 0) || (index >= adapters)) 275 return NULL; 276 return adapter[index]; 277 } 278 279 /* Configure drivers: this is a backdoor for the console driver XXX */ 280 int 281 vid_configure(int flags) 282 { 283 const video_driver_t **list; 284 const video_driver_t *p; 285 286 SET_FOREACH(list, videodriver_set) { 287 p = *list; 288 if (p->configure != NULL) 289 (*p->configure)(flags); 290 } 291 292 return 0; 293 } 294 295 /* 296 * Virtual frame buffer cdev driver functions 297 * The virtual frame buffer driver dispatches driver functions to 298 * appropriate subdrivers. 299 */ 300 301 #define FB_DRIVER_NAME "fb" 302 303 #ifdef FB_INSTALL_CDEV 304 305 #if experimental 306 307 static devclass_t fb_devclass; 308 309 static int fbprobe(device_t dev); 310 static int fbattach(device_t dev); 311 312 static device_method_t fb_methods[] = { 313 DEVMETHOD(device_probe, fbprobe), 314 DEVMETHOD(device_attach, fbattach), 315 316 DEVMETHOD(bus_print_child, bus_generic_print_child), 317 { 0, 0 } 318 }; 319 320 static driver_t fb_driver = { 321 FB_DRIVER_NAME, 322 fb_methods, 323 0, 324 }; 325 326 static int 327 fbprobe(device_t dev) 328 { 329 int unit; 330 331 unit = device_get_unit(dev); 332 if (unit >= adapters) 333 return ENXIO; 334 if (adapter[unit] == NULL) 335 return ENXIO; 336 337 device_set_desc(dev, "generic frame buffer"); 338 return 0; 339 } 340 341 static int 342 fbattach(device_t dev) 343 { 344 kprintf("fbattach: about to attach children\n"); 345 bus_generic_attach(dev); 346 return 0; 347 } 348 349 #endif /* experimental */ 350 351 #define FB_UNIT(dev) minor(dev) 352 #define FB_MKMINOR(unit) (u) 353 354 #if 0 355 static d_default_t fboperate; 356 static d_open_t fbopen; 357 358 #define CDEV_MAJOR 123 /* XXX */ 359 360 static struct dev_ops fb_ops = { 361 { FB_DRIVER_NAME, CDEV_MAJOR, 0 }, 362 .d_default = fboperate, 363 .d_open = fbopen 364 }; 365 #endif 366 367 static void 368 vfbattach(void *arg) 369 { 370 static int fb_devsw_installed = FALSE; 371 372 if (!fb_devsw_installed) { 373 #if 0 374 dev_ops_add(&fb_ops, 0, 0); 375 #endif 376 fb_devsw_installed = TRUE; 377 } 378 } 379 380 PSEUDO_SET(vfbattach, fb); 381 382 /* 383 * Note: dev represents the actual video device, not the frame buffer 384 */ 385 int 386 fb_attach(cdev_t dev, video_adapter_t *adp) 387 { 388 if (adp->va_index >= adapters) 389 return EINVAL; 390 if (adapter[adp->va_index] != adp) 391 return EINVAL; 392 393 crit_enter(); 394 reference_dev(dev); 395 adp->va_minor = minor(dev); 396 vidcdevsw[adp->va_index] = dev; 397 crit_exit(); 398 399 kprintf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit); 400 return 0; 401 } 402 403 /* 404 * Note: dev represents the actual video device, not the frame buffer 405 */ 406 int 407 fb_detach(cdev_t dev, video_adapter_t *adp) 408 { 409 if (adp->va_index >= adapters) 410 return EINVAL; 411 if (adapter[adp->va_index] != adp) 412 return EINVAL; 413 if (vidcdevsw[adp->va_index] != dev) 414 return EINVAL; 415 416 crit_enter(); 417 vidcdevsw[adp->va_index] = NULL; 418 crit_exit(); 419 release_dev(dev); 420 return 0; 421 } 422 423 #if 0 424 static int 425 fbopen(struct dev_open_args *ap) 426 { 427 cdev_t dev = ap->a_head.a_dev; 428 int unit; 429 cdev_t fdev; 430 431 unit = FB_UNIT(dev); 432 if (unit < 0 || unit >= adapters) 433 return ENXIO; 434 if ((fdev = vidcdevsw[unit]) == NULL) 435 return ENXIO; 436 return dev_dopen(fdev, ap->a_oflags, ap->a_devtype, ap->a_cred); 437 } 438 439 static int 440 fboperate(struct dev_generic_args *ap) 441 { 442 cdev_t dev = ap->a_dev; 443 int unit; 444 cdev_t fdev; 445 446 unit = FB_UNIT(dev); 447 if ((fdev = vidcdevsw[unit]) == NULL) 448 return ENXIO; 449 ap->a_dev = fdev; 450 return dev_doperate(ap); 451 } 452 #endif 453 454 /* 455 * Generic frame buffer cdev driver functions 456 * Frame buffer subdrivers may call these functions to implement common 457 * driver functions. 458 */ 459 460 int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode, 461 struct ucred *cred) 462 { 463 crit_enter(); 464 if (!(sc->gfb_flags & FB_OPEN)) 465 sc->gfb_flags |= FB_OPEN; 466 crit_exit(); 467 return 0; 468 } 469 470 int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode) 471 { 472 crit_enter(); 473 sc->gfb_flags &= ~FB_OPEN; 474 crit_exit(); 475 return 0; 476 } 477 478 int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio, 479 int flag) 480 { 481 int size; 482 int offset; 483 int error; 484 int len; 485 486 error = 0; 487 size = adp->va_buffer_size/adp->va_info.vi_planes; 488 while (uio->uio_resid > 0) { 489 if (uio->uio_offset >= size) 490 break; 491 offset = uio->uio_offset%adp->va_window_size; 492 len = (int)szmin(uio->uio_resid, size - uio->uio_offset); 493 len = imin(len, adp->va_window_size - offset); 494 if (len <= 0) 495 break; 496 (*vidsw[adp->va_index]->set_win_org)(adp, uio->uio_offset); 497 error = uiomove((caddr_t)(adp->va_window + offset), 498 (size_t)len, uio); 499 if (error) 500 break; 501 } 502 return error; 503 } 504 505 int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio, 506 int flag) 507 { 508 return ENODEV; 509 } 510 511 int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd, 512 caddr_t arg, int flag, struct ucred *cred) 513 { 514 int error; 515 516 if (adp == NULL) /* XXX */ 517 return ENXIO; 518 error = (*vidsw[adp->va_index]->ioctl)(adp, cmd, arg); 519 if (error == ENOIOCTL) 520 error = ENODEV; 521 return error; 522 } 523 524 int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_offset_t offset, 525 int prot) 526 { 527 return (*vidsw[adp->va_index]->mmap)(adp, offset, prot); 528 } 529 530 #endif /* FB_INSTALL_CDEV */ 531 532 static char * 533 adapter_name(int type) 534 { 535 static struct { 536 int type; 537 char *name; 538 } names[] = { 539 { KD_MONO, "MDA" }, 540 { KD_HERCULES, "Hercules" }, 541 { KD_CGA, "CGA" }, 542 { KD_EGA, "EGA" }, 543 { KD_VGA, "VGA" }, 544 { KD_TGA, "TGA" }, 545 { -1, "Unknown" }, 546 }; 547 int i; 548 549 for (i = 0; names[i].type != -1; ++i) 550 if (names[i].type == type) 551 break; 552 return names[i].name; 553 } 554 555 /* 556 * Generic low-level frame buffer functions 557 * The low-level functions in the frame buffer subdriver may use these 558 * functions. 559 */ 560 561 void 562 fb_dump_adp_info(char *driver, video_adapter_t *adp, int level) 563 { 564 if (level <= 0) 565 return; 566 567 kprintf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n", 568 FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name, 569 adapter_name(adp->va_type), adp->va_type, adp->va_flags); 570 kprintf("%s%d: port:0x%x-0x%x, mem:0x%x 0x%x\n", 571 FB_DRIVER_NAME, adp->va_index, 572 adp->va_io_base, adp->va_io_base + adp->va_io_size - 1, 573 adp->va_mem_base, adp->va_mem_size); 574 kprintf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n", 575 FB_DRIVER_NAME, adp->va_index, 576 adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode); 577 kprintf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n", 578 FB_DRIVER_NAME, adp->va_index, 579 (void *)adp->va_window, (int)adp->va_window_size/1024, 580 (int)adp->va_window_gran/1024, (void *)adp->va_buffer, 581 (int)adp->va_buffer_size/1024); 582 } 583 584 void 585 fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info, 586 int level) 587 { 588 if (level <= 0) 589 return; 590 591 kprintf("%s%d: %s, mode:%d, flags:0x%x ", 592 driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags); 593 if (info->vi_flags & V_INFO_GRAPHICS) 594 kprintf("G %dx%dx%d, %d plane(s), font:%dx%d, ", 595 info->vi_width, info->vi_height, 596 info->vi_depth, info->vi_planes, 597 info->vi_cwidth, info->vi_cheight); 598 else 599 kprintf("T %dx%d, font:%dx%d, ", 600 info->vi_width, info->vi_height, 601 info->vi_cwidth, info->vi_cheight); 602 kprintf("win:0x%x\n", info->vi_window); 603 } 604 605 int 606 fb_type(int adp_type) 607 { 608 static struct { 609 int fb_type; 610 int va_type; 611 } types[] = { 612 { FBTYPE_MDA, KD_MONO }, 613 { FBTYPE_HERCULES, KD_HERCULES }, 614 { FBTYPE_CGA, KD_CGA }, 615 { FBTYPE_EGA, KD_EGA }, 616 { FBTYPE_VGA, KD_VGA }, 617 { FBTYPE_TGA, KD_TGA }, 618 }; 619 int i; 620 621 for (i = 0; i < sizeof(types)/sizeof(types[0]); ++i) { 622 if (types[i].va_type == adp_type) 623 return types[i].fb_type; 624 } 625 return -1; 626 } 627 628 int 629 fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 630 { 631 int error; 632 633 /* assert(adp != NULL) */ 634 635 error = 0; 636 crit_enter(); 637 638 switch (cmd) { 639 640 case FBIO_ADAPTER: /* get video adapter index */ 641 *(int *)arg = adp->va_index; 642 break; 643 644 case FBIO_ADPTYPE: /* get video adapter type */ 645 *(int *)arg = adp->va_type; 646 break; 647 648 case FBIO_ADPINFO: /* get video adapter info */ 649 ((video_adapter_info_t *)arg)->va_index = adp->va_index; 650 ((video_adapter_info_t *)arg)->va_type = adp->va_type; 651 bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name, 652 imin(strlen(adp->va_name) + 1, 653 sizeof(((video_adapter_info_t *)arg)->va_name))); 654 ((video_adapter_info_t *)arg)->va_unit = adp->va_unit; 655 ((video_adapter_info_t *)arg)->va_flags = adp->va_flags; 656 ((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base; 657 ((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size; 658 ((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base; 659 ((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size; 660 ((video_adapter_info_t *)arg)->va_window 661 #ifdef __i386__ 662 = vtophys(adp->va_window); 663 #else 664 = adp->va_window; 665 #endif 666 ((video_adapter_info_t *)arg)->va_window_size 667 = adp->va_window_size; 668 ((video_adapter_info_t *)arg)->va_window_gran 669 = adp->va_window_gran; 670 ((video_adapter_info_t *)arg)->va_window_orig 671 = adp->va_window_orig; 672 ((video_adapter_info_t *)arg)->va_unused0 673 #ifdef __i386__ 674 = (adp->va_buffer) ? vtophys(adp->va_buffer) : 0; 675 #else 676 = adp->va_buffer; 677 #endif 678 ((video_adapter_info_t *)arg)->va_buffer_size 679 = adp->va_buffer_size; 680 ((video_adapter_info_t *)arg)->va_mode = adp->va_mode; 681 ((video_adapter_info_t *)arg)->va_initial_mode 682 = adp->va_initial_mode; 683 ((video_adapter_info_t *)arg)->va_initial_bios_mode 684 = adp->va_initial_bios_mode; 685 ((video_adapter_info_t *)arg)->va_line_width 686 = adp->va_line_width; 687 ((video_adapter_info_t *)arg)->va_disp_start.x 688 = adp->va_disp_start.x; 689 ((video_adapter_info_t *)arg)->va_disp_start.y 690 = adp->va_disp_start.y; 691 break; 692 693 case FBIO_MODEINFO: /* get mode information */ 694 error = (*vidsw[adp->va_index]->get_info)(adp, 695 ((video_info_t *)arg)->vi_mode, 696 (video_info_t *)arg); 697 if (error) 698 error = ENODEV; 699 break; 700 701 case FBIO_FINDMODE: /* find a matching video mode */ 702 error = (*vidsw[adp->va_index]->query_mode)(adp, 703 (video_info_t *)arg); 704 break; 705 706 case FBIO_GETMODE: /* get video mode */ 707 *(int *)arg = adp->va_mode; 708 break; 709 710 case FBIO_SETMODE: /* set video mode */ 711 error = (*vidsw[adp->va_index]->set_mode)(adp, *(int *)arg); 712 if (error) 713 error = ENODEV; /* EINVAL? */ 714 break; 715 716 case FBIO_GETWINORG: /* get frame buffer window origin */ 717 *(u_int *)arg = adp->va_window_orig; 718 break; 719 720 case FBIO_GETDISPSTART: /* get display start address */ 721 ((video_display_start_t *)arg)->x = adp->va_disp_start.x; 722 ((video_display_start_t *)arg)->y = adp->va_disp_start.y; 723 break; 724 725 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */ 726 *(u_int *)arg = adp->va_line_width; 727 break; 728 729 case FBIO_GETPALETTE: /* get color palette */ 730 case FBIO_SETPALETTE: /* set color palette */ 731 /* XXX */ 732 733 case FBIOPUTCMAP: 734 case FBIOGETCMAP: 735 /* XXX */ 736 737 case FBIO_SETWINORG: /* set frame buffer window origin */ 738 case FBIO_SETDISPSTART: /* set display start address */ 739 case FBIO_SETLINEWIDTH: /* set scan line width in pixel */ 740 741 case FBIOGTYPE: 742 case FBIOGATTR: 743 case FBIOSVIDEO: 744 case FBIOGVIDEO: 745 case FBIOSCURSOR: 746 case FBIOGCURSOR: 747 case FBIOSCURPOS: 748 case FBIOGCURPOS: 749 case FBIOGCURMAX: 750 751 default: 752 error = ENODEV; 753 break; 754 } 755 756 crit_exit(); 757 return error; 758 } 759