29 */ 30 31#include "opt_fb.h" 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/conf.h> 36#include <sys/bus.h> 37#include <sys/kernel.h> 38#include <sys/malloc.h> 39#include <sys/module.h> 40#include <sys/uio.h> 41#include <sys/fbio.h> 42#include <sys/linker_set.h> 43 44#include <vm/vm.h> 45#include <vm/pmap.h> 46 47#include <dev/fb/fbreg.h> 48 49SET_DECLARE(videodriver_set, const video_driver_t); 50 51/* local arrays */ 52 53/* 54 * We need at least one entry each in order to initialize a video card 55 * for the kernel console. The arrays will be increased dynamically 56 * when necessary. 57 */ 58 59static int vid_malloc; 60static int adapters = 1; 61static video_adapter_t *adp_ini; 62static video_adapter_t **adapter = &adp_ini; 63static video_switch_t *vidsw_ini; 64 video_switch_t **vidsw = &vidsw_ini; 65 66#ifdef FB_INSTALL_CDEV 67static struct cdevsw *vidcdevsw_ini; 68static struct cdevsw **vidcdevsw = &vidcdevsw_ini; 69#endif 70 71#define ARRAY_DELTA 4 72 73static int 74vid_realloc_array(void) 75{ 76 video_adapter_t **new_adp; 77 video_switch_t **new_vidsw; 78#ifdef FB_INSTALL_CDEV 79 struct cdevsw **new_cdevsw; 80#endif 81 int newsize; 82 int s; 83 84 if (!vid_malloc) 85 return ENOMEM; 86 87 s = spltty(); 88 newsize = ((adapters + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA; 89 new_adp = malloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK | M_ZERO); 90 new_vidsw = malloc(sizeof(*new_vidsw)*newsize, M_DEVBUF, 91 M_WAITOK | M_ZERO); 92#ifdef FB_INSTALL_CDEV 93 new_cdevsw = malloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF, 94 M_WAITOK | M_ZERO); 95#endif 96 bcopy(adapter, new_adp, sizeof(*adapter)*adapters); 97 bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters); 98#ifdef FB_INSTALL_CDEV 99 bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters); 100#endif 101 if (adapters > 1) { 102 free(adapter, M_DEVBUF); 103 free(vidsw, M_DEVBUF); 104#ifdef FB_INSTALL_CDEV 105 free(vidcdevsw, M_DEVBUF); 106#endif 107 } 108 adapter = new_adp; 109 vidsw = new_vidsw; 110#ifdef FB_INSTALL_CDEV 111 vidcdevsw = new_cdevsw; 112#endif 113 adapters = newsize; 114 splx(s); 115 116 if (bootverbose) 117 printf("fb: new array size %d\n", adapters); 118 119 return 0; 120} 121 122static void 123vid_malloc_init(void *arg) 124{ 125 vid_malloc = TRUE; 126} 127 128SYSINIT(vid_mem, SI_SUB_KMEM, SI_ORDER_ANY, vid_malloc_init, NULL); 129 130/* 131 * Low-level frame buffer driver functions 132 * frame buffer subdrivers, such as the VGA driver, call these functions 133 * to initialize the video_adapter structure and register it to the virtual 134 * frame buffer driver `fb'. 135 */ 136 137/* initialize the video_adapter_t structure */ 138void 139vid_init_struct(video_adapter_t *adp, char *name, int type, int unit) 140{ 141 adp->va_flags = 0; 142 adp->va_name = name; 143 adp->va_type = type; 144 adp->va_unit = unit; 145} 146 147/* Register a video adapter */ 148int 149vid_register(video_adapter_t *adp) 150{ 151 const video_driver_t **list; 152 const video_driver_t *p; 153 int index; 154 155 for (index = 0; index < adapters; ++index) { 156 if (adapter[index] == NULL) 157 break; 158 } 159 if (index >= adapters) { 160 if (vid_realloc_array()) 161 return -1; 162 } 163 164 adp->va_index = index; 165 adp->va_token = NULL; 166 SET_FOREACH(list, videodriver_set) { 167 p = *list; 168 if (strcmp(p->name, adp->va_name) == 0) { 169 adapter[index] = adp; 170 vidsw[index] = p->vidsw; 171 return index; 172 } 173 } 174 175 return -1; 176} 177 178int 179vid_unregister(video_adapter_t *adp) 180{ 181 if ((adp->va_index < 0) || (adp->va_index >= adapters)) 182 return ENOENT; 183 if (adapter[adp->va_index] != adp) 184 return ENOENT; 185 186 adapter[adp->va_index] = NULL; 187 vidsw[adp->va_index] = NULL; 188 return 0; 189} 190 191/* Get video I/O function table */ 192video_switch_t 193*vid_get_switch(char *name) 194{ 195 const video_driver_t **list; 196 const video_driver_t *p; 197 198 SET_FOREACH(list, videodriver_set) { 199 p = *list; 200 if (strcmp(p->name, name) == 0) 201 return p->vidsw; 202 } 203 204 return NULL; 205} 206 207/* 208 * Video card client functions 209 * Video card clients, such as the console driver `syscons' and the frame 210 * buffer cdev driver, use these functions to claim and release a card for 211 * exclusive use. 212 */ 213 214/* find the video card specified by a driver name and a unit number */ 215int 216vid_find_adapter(char *driver, int unit) 217{ 218 int i; 219 220 for (i = 0; i < adapters; ++i) { 221 if (adapter[i] == NULL) 222 continue; 223 if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver)) 224 continue; 225 if ((unit != -1) && (adapter[i]->va_unit != unit)) 226 continue; 227 return i; 228 } 229 return -1; 230} 231 232/* allocate a video card */ 233int 234vid_allocate(char *driver, int unit, void *id) 235{ 236 int index; 237 int s; 238 239 s = spltty(); 240 index = vid_find_adapter(driver, unit); 241 if (index >= 0) { 242 if (adapter[index]->va_token) { 243 splx(s); 244 return -1; 245 } 246 adapter[index]->va_token = id; 247 } 248 splx(s); 249 return index; 250} 251 252int 253vid_release(video_adapter_t *adp, void *id) 254{ 255 int error; 256 int s; 257 258 s = spltty(); 259 if (adp->va_token == NULL) { 260 error = EINVAL; 261 } else if (adp->va_token != id) { 262 error = EPERM; 263 } else { 264 adp->va_token = NULL; 265 error = 0; 266 } 267 splx(s); 268 return error; 269} 270 271/* Get a video adapter structure */ 272video_adapter_t 273*vid_get_adapter(int index) 274{ 275 if ((index < 0) || (index >= adapters)) 276 return NULL; 277 return adapter[index]; 278} 279 280/* Configure drivers: this is a backdoor for the console driver XXX */ 281int 282vid_configure(int flags) 283{ 284 const video_driver_t **list; 285 const video_driver_t *p; 286 287 SET_FOREACH(list, videodriver_set) { 288 p = *list; 289 if (p->configure != NULL) 290 (*p->configure)(flags); 291 } 292 293 return 0; 294} 295 296/* 297 * Virtual frame buffer cdev driver functions 298 * The virtual frame buffer driver dispatches driver functions to 299 * appropriate subdrivers. 300 */ 301 302#define FB_DRIVER_NAME "fb" 303 304#ifdef FB_INSTALL_CDEV 305 306#if experimental 307 308static devclass_t fb_devclass; 309 310static int fbprobe(device_t dev); 311static int fbattach(device_t dev); 312 313static device_method_t fb_methods[] = { 314 DEVMETHOD(device_probe, fbprobe), 315 DEVMETHOD(device_attach, fbattach), 316 317 DEVMETHOD(bus_print_child, bus_generic_print_child), 318 { 0, 0 } 319}; 320 321static driver_t fb_driver = { 322 FB_DRIVER_NAME, 323 fb_methods, 324 0, 325}; 326 327static int 328fbprobe(device_t dev) 329{ 330 int unit; 331 332 unit = device_get_unit(dev); 333 if (unit >= adapters) 334 return ENXIO; 335 if (adapter[unit] == NULL) 336 return ENXIO; 337 338 device_set_desc(dev, "generic frame buffer"); 339 return 0; 340} 341 342static int 343fbattach(device_t dev) 344{ 345 printf("fbattach: about to attach children\n"); 346 bus_generic_attach(dev); 347 return 0; 348} 349 350#endif /* experimental */ 351 352#define FB_UNIT(dev) minor(dev) 353#define FB_MKMINOR(unit) (u) 354 355#if experimental 356static d_open_t fbopen; 357static d_close_t fbclose; 358static d_read_t fbread; 359static d_write_t fbwrite; 360static d_ioctl_t fbioctl; 361static d_mmap_t fbmmap; 362 363#define CDEV_MAJOR 123 /* XXX */ 364 365static struct cdevsw fb_cdevsw = {
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374}; 375#endif 376 377 378static int 379fb_modevent(module_t mod, int type, void *data) 380{ 381 382 switch (type) { 383 case MOD_LOAD: 384 break; 385 case MOD_UNLOAD: 386 printf("fb module unload - not possible for this module type\n"); 387 return EINVAL; 388 } 389 return 0; 390} 391 392static moduledata_t fb_mod = { 393 "fb", 394 fb_modevent, 395 NULL 396}; 397 398DECLARE_MODULE(fb, fb_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 399 400int 401fb_attach(dev_t dev, video_adapter_t *adp, struct cdevsw *cdevsw) 402{ 403 int s; 404 405 if (adp->va_index >= adapters) 406 return EINVAL; 407 if (adapter[adp->va_index] != adp) 408 return EINVAL; 409 410 s = spltty(); 411 adp->va_minor = minor(dev); 412 vidcdevsw[adp->va_index] = cdevsw; 413 splx(s); 414 415 printf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit); 416 return 0; 417} 418 419int 420fb_detach(dev_t dev, video_adapter_t *adp, struct cdevsw *cdevsw) 421{ 422 int s; 423 424 if (adp->va_index >= adapters) 425 return EINVAL; 426 if (adapter[adp->va_index] != adp) 427 return EINVAL; 428 if (vidcdevsw[adp->va_index] != cdevsw) 429 return EINVAL; 430 431 s = spltty(); 432 vidcdevsw[adp->va_index] = NULL; 433 splx(s); 434 return 0; 435} 436 437#if experimental 438static int 439fbopen(dev_t dev, int flag, int mode, struct thread *td) 440{ 441 int unit; 442 443 unit = FB_UNIT(dev); 444 if (unit >= adapters) 445 return ENXIO; 446 if (vidcdevsw[unit] == NULL) 447 return ENXIO; 448 return (*vidcdevsw[unit]->d_open)(makedev(0, adapter[unit]->va_minor), 449 flag, mode, td); 450} 451 452static int 453fbclose(dev_t dev, int flag, int mode, struct thread *td) 454{ 455 int unit; 456 457 unit = FB_UNIT(dev); 458 if (vidcdevsw[unit] == NULL) 459 return ENXIO; 460 return (*vidcdevsw[unit]->d_close)(makedev(0, adapter[unit]->va_minor), 461 flag, mode, td); 462} 463 464static int 465fbread(dev_t dev, struct uio *uio, int flag) 466{ 467 int unit; 468 469 unit = FB_UNIT(dev); 470 if (vidcdevsw[unit] == NULL) 471 return ENXIO; 472 return (*vidcdevsw[unit]->d_read)(makedev(0, adapter[unit]->va_minor), 473 uio, flag); 474} 475 476static int 477fbwrite(dev_t dev, struct uio *uio, int flag) 478{ 479 int unit; 480 481 unit = FB_UNIT(dev); 482 if (vidcdevsw[unit] == NULL) 483 return ENXIO; 484 return (*vidcdevsw[unit]->d_write)(makedev(0, adapter[unit]->va_minor), 485 uio, flag); 486} 487 488static int 489fbioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 490{ 491 int unit; 492 493 unit = FB_UNIT(dev); 494 if (vidcdevsw[unit] == NULL) 495 return ENXIO; 496 return (*vidcdevsw[unit]->d_ioctl)(makedev(0, adapter[unit]->va_minor), 497 cmd, arg, flag, td); 498} 499 500static int 501fbmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot) 502{ 503 int unit; 504 505 unit = FB_UNIT(dev); 506 if (vidcdevsw[unit] == NULL) 507 return ENXIO; 508 return (*vidcdevsw[unit]->d_mmap)(makedev(0, adapter[unit]->va_minor), 509 offset, paddr, nprot); 510} 511 512DEV_DRIVER_MODULE(fb, ???, fb_driver, fb_devclass, fb_cdevsw, 0, 0); 513#endif 514 515/* 516 * Generic frame buffer cdev driver functions 517 * Frame buffer subdrivers may call these functions to implement common 518 * driver functions. 519 */ 520 521int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode, 522 struct thread *td) 523{ 524 int s; 525 526 s = spltty(); 527 if (!(sc->gfb_flags & FB_OPEN)) 528 sc->gfb_flags |= FB_OPEN; 529 splx(s); 530 return 0; 531} 532 533int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode, 534 struct thread *td) 535{ 536 int s; 537 538 s = spltty(); 539 sc->gfb_flags &= ~FB_OPEN; 540 splx(s); 541 return 0; 542} 543 544int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio, 545 int flag) 546{ 547 int size; 548 int offset; 549 int error; 550 int len; 551 552 error = 0; 553 size = adp->va_buffer_size/adp->va_info.vi_planes; 554 while (uio->uio_resid > 0) { 555 if (uio->uio_offset >= size) 556 break; 557 offset = uio->uio_offset%adp->va_window_size; 558 len = imin(uio->uio_resid, size - uio->uio_offset); 559 len = imin(len, adp->va_window_size - offset); 560 if (len <= 0) 561 break; 562 (*vidsw[adp->va_index]->set_win_org)(adp, uio->uio_offset); 563 error = uiomove((caddr_t)(adp->va_window + offset), len, uio); 564 if (error) 565 break; 566 } 567 return error; 568} 569 570int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio, 571 int flag) 572{ 573 return ENODEV; 574} 575 576int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd, 577 caddr_t arg, int flag, struct thread *td) 578{ 579 int error; 580 581 if (adp == NULL) /* XXX */ 582 return ENXIO; 583 error = (*vidsw[adp->va_index]->ioctl)(adp, cmd, arg); 584 if (error == ENOIOCTL) 585 error = ENODEV; 586 return error; 587} 588 589int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_offset_t offset, 590 vm_offset_t *paddr, int prot) 591{ 592 return (*vidsw[adp->va_index]->mmap)(adp, offset, paddr, prot); 593} 594 595#endif /* FB_INSTALL_CDEV */ 596 597static char 598*adapter_name(int type) 599{ 600 static struct { 601 int type; 602 char *name; 603 } names[] = { 604 { KD_MONO, "MDA" }, 605 { KD_HERCULES, "Hercules" }, 606 { KD_CGA, "CGA" }, 607 { KD_EGA, "EGA" }, 608 { KD_VGA, "VGA" }, 609 { KD_PC98, "PC-98x1" }, 610 { KD_TGA, "TGA" }, 611 { -1, "Unknown" }, 612 }; 613 int i; 614 615 for (i = 0; names[i].type != -1; ++i) 616 if (names[i].type == type) 617 break; 618 return names[i].name; 619} 620 621/* 622 * Generic low-level frame buffer functions 623 * The low-level functions in the frame buffer subdriver may use these 624 * functions. 625 */ 626 627void 628fb_dump_adp_info(char *driver, video_adapter_t *adp, int level) 629{ 630 if (level <= 0) 631 return; 632 633 printf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n", 634 FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name, 635 adapter_name(adp->va_type), adp->va_type, adp->va_flags); 636 printf("%s%d: port:0x%lx-0x%lx, crtc:0x%lx, mem:0x%lx 0x%x\n", 637 FB_DRIVER_NAME, adp->va_index, (u_long)adp->va_io_base, 638 (u_long)adp->va_io_base + adp->va_io_size - 1, 639 (u_long)adp->va_crtc_addr, (u_long)adp->va_mem_base, 640 adp->va_mem_size); 641 printf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n", 642 FB_DRIVER_NAME, adp->va_index, 643 adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode); 644 printf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n", 645 FB_DRIVER_NAME, adp->va_index, 646 (void *)adp->va_window, (int)adp->va_window_size/1024, 647 (int)adp->va_window_gran/1024, (void *)adp->va_buffer, 648 (int)adp->va_buffer_size/1024); 649} 650 651void 652fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info, 653 int level) 654{ 655 if (level <= 0) 656 return; 657 658 printf("%s%d: %s, mode:%d, flags:0x%x ", 659 driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags); 660 if (info->vi_flags & V_INFO_GRAPHICS) 661 printf("G %dx%dx%d, %d plane(s), font:%dx%d, ", 662 info->vi_width, info->vi_height, 663 info->vi_depth, info->vi_planes, 664 info->vi_cwidth, info->vi_cheight); 665 else 666 printf("T %dx%d, font:%dx%d, ", 667 info->vi_width, info->vi_height, 668 info->vi_cwidth, info->vi_cheight); 669 printf("win:0x%lx\n", (u_long)info->vi_window); 670} 671 672int 673fb_type(int adp_type) 674{ 675 static struct { 676 int fb_type; 677 int va_type; 678 } types[] = { 679 { FBTYPE_MDA, KD_MONO }, 680 { FBTYPE_HERCULES, KD_HERCULES }, 681 { FBTYPE_CGA, KD_CGA }, 682 { FBTYPE_EGA, KD_EGA }, 683 { FBTYPE_VGA, KD_VGA }, 684 { FBTYPE_PC98, KD_PC98 }, 685 { FBTYPE_TGA, KD_TGA }, 686 }; 687 int i; 688 689 for (i = 0; i < sizeof(types)/sizeof(types[0]); ++i) { 690 if (types[i].va_type == adp_type) 691 return types[i].fb_type; 692 } 693 return -1; 694} 695 696int 697fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 698{ 699 int error; 700 int s; 701 702 /* assert(adp != NULL) */ 703 704 error = 0; 705 s = spltty(); 706 707 switch (cmd) { 708 709 case FBIO_ADAPTER: /* get video adapter index */ 710 *(int *)arg = adp->va_index; 711 break; 712 713 case FBIO_ADPTYPE: /* get video adapter type */ 714 *(int *)arg = adp->va_type; 715 break; 716 717 case FBIO_ADPINFO: /* get video adapter info */ 718 ((video_adapter_info_t *)arg)->va_index = adp->va_index; 719 ((video_adapter_info_t *)arg)->va_type = adp->va_type; 720 bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name, 721 imin(strlen(adp->va_name) + 1, 722 sizeof(((video_adapter_info_t *)arg)->va_name))); 723 ((video_adapter_info_t *)arg)->va_unit = adp->va_unit; 724 ((video_adapter_info_t *)arg)->va_flags = adp->va_flags; 725 ((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base; 726 ((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size; 727 ((video_adapter_info_t *)arg)->va_crtc_addr = adp->va_crtc_addr; 728 ((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base; 729 ((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size; 730 ((video_adapter_info_t *)arg)->va_window 731#ifdef __i386__ 732 = vtophys(adp->va_window); 733#else 734 = adp->va_window; 735#endif 736 ((video_adapter_info_t *)arg)->va_window_size 737 = adp->va_window_size; 738 ((video_adapter_info_t *)arg)->va_window_gran 739 = adp->va_window_gran; 740 ((video_adapter_info_t *)arg)->va_window_orig 741 = adp->va_window_orig; 742 ((video_adapter_info_t *)arg)->va_unused0 743#ifdef __i386__ 744 = (adp->va_buffer) ? vtophys(adp->va_buffer) : 0; 745#else 746 = adp->va_buffer; 747#endif 748 ((video_adapter_info_t *)arg)->va_buffer_size 749 = adp->va_buffer_size; 750 ((video_adapter_info_t *)arg)->va_mode = adp->va_mode; 751 ((video_adapter_info_t *)arg)->va_initial_mode 752 = adp->va_initial_mode; 753 ((video_adapter_info_t *)arg)->va_initial_bios_mode 754 = adp->va_initial_bios_mode; 755 ((video_adapter_info_t *)arg)->va_line_width 756 = adp->va_line_width; 757 ((video_adapter_info_t *)arg)->va_disp_start.x 758 = adp->va_disp_start.x; 759 ((video_adapter_info_t *)arg)->va_disp_start.y 760 = adp->va_disp_start.y; 761 break; 762 763 case FBIO_MODEINFO: /* get mode information */ 764 error = (*vidsw[adp->va_index]->get_info)(adp, 765 ((video_info_t *)arg)->vi_mode, 766 (video_info_t *)arg); 767 if (error) 768 error = ENODEV; 769 break; 770 771 case FBIO_FINDMODE: /* find a matching video mode */ 772 error = (*vidsw[adp->va_index]->query_mode)(adp, 773 (video_info_t *)arg); 774 break; 775 776 case FBIO_GETMODE: /* get video mode */ 777 *(int *)arg = adp->va_mode; 778 break; 779 780 case FBIO_SETMODE: /* set video mode */ 781 error = (*vidsw[adp->va_index]->set_mode)(adp, *(int *)arg); 782 if (error) 783 error = ENODEV; /* EINVAL? */ 784 break; 785 786 case FBIO_GETWINORG: /* get frame buffer window origin */ 787 *(u_int *)arg = adp->va_window_orig; 788 break; 789 790 case FBIO_GETDISPSTART: /* get display start address */ 791 ((video_display_start_t *)arg)->x = adp->va_disp_start.x; 792 ((video_display_start_t *)arg)->y = adp->va_disp_start.y; 793 break; 794 795 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */ 796 *(u_int *)arg = adp->va_line_width; 797 break; 798 799 case FBIO_BLANK: /* blank display */ 800 error = (*vidsw[adp->va_index]->blank_display)(adp, *(int *)arg); 801 break; 802 803 case FBIO_GETPALETTE: /* get color palette */ 804 case FBIO_SETPALETTE: /* set color palette */ 805 /* XXX */ 806 807 case FBIOPUTCMAP: 808 case FBIOGETCMAP: 809 case FBIOPUTCMAPI: 810 case FBIOGETCMAPI: 811 /* XXX */ 812 813 case FBIO_SETWINORG: /* set frame buffer window origin */ 814 case FBIO_SETDISPSTART: /* set display start address */ 815 case FBIO_SETLINEWIDTH: /* set scan line width in pixel */ 816 817 case FBIOGTYPE: 818 case FBIOGATTR: 819 case FBIOSVIDEO: 820 case FBIOGVIDEO: 821 case FBIOVERTICAL: 822 case FBIOSCURSOR: 823 case FBIOGCURSOR: 824 case FBIOSCURPOS: 825 case FBIOGCURPOS: 826 case FBIOGCURMAX: 827 case FBIOMONINFO: 828 case FBIOGXINFO: 829 830 default: 831 error = ENODEV; 832 break; 833 } 834 835 splx(s); 836 return error; 837}
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