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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 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/module.h> 41 #include <sys/uio.h> 42 #include <sys/fbio.h> 43 #include <sys/linker_set.h> 44 45 #include <vm/vm.h> 46 #include <vm/pmap.h> 47 48 #include <dev/fb/fbreg.h> 49 50 SET_DECLARE(videodriver_set, const video_driver_t); 51 52 /* local arrays */ 53 54 /* 55 * We need at least one entry each in order to initialize a video card 56 * for the kernel console. The arrays will be increased dynamically 57 * when necessary. 58 */ 59 60 static int vid_malloc; 61 static int adapters = 1; 62 static video_adapter_t *adp_ini; 63 static video_adapter_t **adapter = &adp_ini; 64 static video_switch_t *vidsw_ini; 65 video_switch_t **vidsw = &vidsw_ini; 66 67 #ifdef FB_INSTALL_CDEV 68 static struct cdevsw *vidcdevsw_ini; 69 static struct cdevsw **vidcdevsw = &vidcdevsw_ini; 70 #endif 71 72 #define ARRAY_DELTA 4 73 74 static int 75 vid_realloc_array(void) 76 { 77 video_adapter_t **new_adp; 78 video_switch_t **new_vidsw; 79 #ifdef FB_INSTALL_CDEV 80 struct cdevsw **new_cdevsw; 81 #endif 82 int newsize; 83 int s; 84 85 if (!vid_malloc) 86 return ENOMEM; 87 88 s = spltty(); 89 newsize = rounddown(adapters + ARRAY_DELTA, ARRAY_DELTA); 90 new_adp = malloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK | M_ZERO); 91 new_vidsw = malloc(sizeof(*new_vidsw)*newsize, M_DEVBUF, 92 M_WAITOK | M_ZERO); 93 #ifdef FB_INSTALL_CDEV 94 new_cdevsw = malloc(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 free(adapter, M_DEVBUF); 104 free(vidsw, M_DEVBUF); 105 #ifdef FB_INSTALL_CDEV 106 free(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 splx(s); 116 117 if (bootverbose) 118 printf("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_SUB_KMEM, 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 int s; 239 240 s = spltty(); 241 index = vid_find_adapter(driver, unit); 242 if (index >= 0) { 243 if (adapter[index]->va_token) { 244 splx(s); 245 return -1; 246 } 247 adapter[index]->va_token = id; 248 } 249 splx(s); 250 return index; 251 } 252 253 int 254 vid_release(video_adapter_t *adp, void *id) 255 { 256 int error; 257 int s; 258 259 s = spltty(); 260 if (adp->va_token == NULL) { 261 error = EINVAL; 262 } else if (adp->va_token != id) { 263 error = EPERM; 264 } else { 265 adp->va_token = NULL; 266 error = 0; 267 } 268 splx(s); 269 return error; 270 } 271 272 /* Get a video adapter structure */ 273 video_adapter_t 274 *vid_get_adapter(int index) 275 { 276 if ((index < 0) || (index >= adapters)) 277 return NULL; 278 return adapter[index]; 279 } 280 281 /* Configure drivers: this is a backdoor for the console driver XXX */ 282 int 283 vid_configure(int flags) 284 { 285 const video_driver_t **list; 286 const video_driver_t *p; 287 288 SET_FOREACH(list, videodriver_set) { 289 p = *list; 290 if (p->configure != NULL) 291 (*p->configure)(flags); 292 } 293 294 return 0; 295 } 296 297 /* 298 * Virtual frame buffer cdev driver functions 299 * The virtual frame buffer driver dispatches driver functions to 300 * appropriate subdrivers. 301 */ 302 303 #define FB_DRIVER_NAME "fb" 304 305 #ifdef FB_INSTALL_CDEV 306 307 #if 0 /* experimental */ 308 309 static devclass_t fb_devclass; 310 311 static int fbprobe(device_t dev); 312 static int fbattach(device_t dev); 313 314 static device_method_t fb_methods[] = { 315 DEVMETHOD(device_probe, fbprobe), 316 DEVMETHOD(device_attach, fbattach), 317 318 DEVMETHOD_END 319 }; 320 321 static driver_t fb_driver = { 322 FB_DRIVER_NAME, 323 fb_methods, 324 0, 325 }; 326 327 static int 328 fbprobe(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 } 341 342 static int 343 fbattach(device_t dev) 344 { 345 printf("fbattach: about to attach children\n"); 346 bus_generic_attach(dev); 347 return 0; 348 } 349 350 #endif 351 352 #define FB_UNIT(dev) dev2unit(dev) 353 #define FB_MKMINOR(unit) (u) 354 355 #if 0 /* experimental */ 356 static d_open_t fbopen; 357 static d_close_t fbclose; 358 static d_read_t fbread; 359 static d_write_t fbwrite; 360 static d_ioctl_t fbioctl; 361 static d_mmap_t fbmmap; 362 363 364 static struct cdevsw fb_cdevsw = { 365 .d_version = D_VERSION, 366 .d_flags = D_NEEDGIANT, 367 .d_open = fbopen, 368 .d_close = fbclose, 369 .d_read = fbread, 370 .d_write = fbwrite, 371 .d_ioctl = fbioctl, 372 .d_mmap = fbmmap, 373 .d_name = FB_DRIVER_NAME, 374 }; 375 #endif 376 377 378 static int 379 fb_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 default: 389 return EOPNOTSUPP; 390 } 391 return 0; 392 } 393 394 static moduledata_t fb_mod = { 395 "fb", 396 fb_modevent, 397 NULL 398 }; 399 400 DECLARE_MODULE(fb, fb_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 401 402 int 403 fb_attach(int unit, video_adapter_t *adp, struct cdevsw *cdevsw) 404 { 405 int s; 406 407 if (adp->va_index >= adapters) 408 return EINVAL; 409 if (adapter[adp->va_index] != adp) 410 return EINVAL; 411 412 s = spltty(); 413 adp->va_minor = unit; 414 vidcdevsw[adp->va_index] = cdevsw; 415 splx(s); 416 417 printf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit); 418 return 0; 419 } 420 421 int 422 fb_detach(int unit, video_adapter_t *adp, struct cdevsw *cdevsw) 423 { 424 int s; 425 426 if (adp->va_index >= adapters) 427 return EINVAL; 428 if (adapter[adp->va_index] != adp) 429 return EINVAL; 430 if (vidcdevsw[adp->va_index] != cdevsw) 431 return EINVAL; 432 433 s = spltty(); 434 vidcdevsw[adp->va_index] = NULL; 435 splx(s); 436 return 0; 437 } 438 439 /* 440 * Generic frame buffer cdev driver functions 441 * Frame buffer subdrivers may call these functions to implement common 442 * driver functions. 443 */ 444 445 int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode, 446 struct thread *td) 447 { 448 int s; 449 450 s = spltty(); 451 if (!(sc->gfb_flags & FB_OPEN)) 452 sc->gfb_flags |= FB_OPEN; 453 splx(s); 454 return 0; 455 } 456 457 int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode, 458 struct thread *td) 459 { 460 int s; 461 462 s = spltty(); 463 sc->gfb_flags &= ~FB_OPEN; 464 splx(s); 465 return 0; 466 } 467 468 int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio, 469 int flag) 470 { 471 int size; 472 int offset; 473 int error; 474 int len; 475 476 error = 0; 477 size = adp->va_buffer_size/adp->va_info.vi_planes; 478 while (uio->uio_resid > 0) { 479 if (uio->uio_offset >= size) 480 break; 481 offset = uio->uio_offset%adp->va_window_size; 482 len = imin(uio->uio_resid, size - uio->uio_offset); 483 len = imin(len, adp->va_window_size - offset); 484 if (len <= 0) 485 break; 486 vidd_set_win_org(adp, uio->uio_offset); 487 error = uiomove((caddr_t)(adp->va_window + offset), len, uio); 488 if (error) 489 break; 490 } 491 return error; 492 } 493 494 int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio, 495 int flag) 496 { 497 return ENODEV; 498 } 499 500 int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd, 501 caddr_t arg, int flag, struct thread *td) 502 { 503 int error; 504 505 if (adp == NULL) /* XXX */ 506 return ENXIO; 507 error = vidd_ioctl(adp, cmd, arg); 508 if (error == ENOIOCTL) 509 error = ENODEV; 510 return error; 511 } 512 513 int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_ooffset_t offset, 514 vm_offset_t *paddr, int prot, vm_memattr_t *memattr) 515 { 516 return vidd_mmap(adp, offset, paddr, prot, memattr); 517 } 518 519 #endif /* FB_INSTALL_CDEV */ 520 521 static char 522 *adapter_name(int type) 523 { 524 static struct { 525 int type; 526 char *name; 527 } names[] = { 528 { KD_MONO, "MDA" }, 529 { KD_HERCULES, "Hercules" }, 530 { KD_CGA, "CGA" }, 531 { KD_EGA, "EGA" }, 532 { KD_VGA, "VGA" }, 533 { KD_TGA, "TGA" }, 534 { -1, "Unknown" }, 535 }; 536 int i; 537 538 for (i = 0; names[i].type != -1; ++i) 539 if (names[i].type == type) 540 break; 541 return names[i].name; 542 } 543 544 /* 545 * Generic low-level frame buffer functions 546 * The low-level functions in the frame buffer subdriver may use these 547 * functions. 548 */ 549 550 void 551 fb_dump_adp_info(char *driver, video_adapter_t *adp, int level) 552 { 553 if (level <= 0) 554 return; 555 556 printf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n", 557 FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name, 558 adapter_name(adp->va_type), adp->va_type, adp->va_flags); 559 printf("%s%d: port:0x%lx-0x%lx, crtc:0x%lx, mem:0x%lx 0x%x\n", 560 FB_DRIVER_NAME, adp->va_index, (u_long)adp->va_io_base, 561 (u_long)adp->va_io_base + adp->va_io_size - 1, 562 (u_long)adp->va_crtc_addr, (u_long)adp->va_mem_base, 563 adp->va_mem_size); 564 printf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n", 565 FB_DRIVER_NAME, adp->va_index, 566 adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode); 567 printf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n", 568 FB_DRIVER_NAME, adp->va_index, 569 (void *)adp->va_window, (int)adp->va_window_size/1024, 570 (int)adp->va_window_gran/1024, (void *)adp->va_buffer, 571 (int)adp->va_buffer_size/1024); 572 } 573 574 void 575 fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info, 576 int level) 577 { 578 if (level <= 0) 579 return; 580 581 printf("%s%d: %s, mode:%d, flags:0x%x ", 582 driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags); 583 if (info->vi_flags & V_INFO_GRAPHICS) 584 printf("G %dx%dx%d, %d plane(s), font:%dx%d, ", 585 info->vi_width, info->vi_height, 586 info->vi_depth, info->vi_planes, 587 info->vi_cwidth, info->vi_cheight); 588 else 589 printf("T %dx%d, font:%dx%d, ", 590 info->vi_width, info->vi_height, 591 info->vi_cwidth, info->vi_cheight); 592 printf("win:0x%lx\n", (u_long)info->vi_window); 593 } 594 595 int 596 fb_type(int adp_type) 597 { 598 static struct { 599 int fb_type; 600 int va_type; 601 } types[] = { 602 { FBTYPE_MDA, KD_MONO }, 603 { FBTYPE_HERCULES, KD_HERCULES }, 604 { FBTYPE_CGA, KD_CGA }, 605 { FBTYPE_EGA, KD_EGA }, 606 { FBTYPE_VGA, KD_VGA }, 607 { FBTYPE_TGA, KD_TGA }, 608 }; 609 int i; 610 611 for (i = 0; i < nitems(types); ++i) { 612 if (types[i].va_type == adp_type) 613 return types[i].fb_type; 614 } 615 return -1; 616 } 617 618 int 619 fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 620 { 621 int error; 622 int s; 623 624 /* assert(adp != NULL) */ 625 626 error = 0; 627 s = spltty(); 628 629 switch (cmd) { 630 631 case FBIO_ADAPTER: /* get video adapter index */ 632 *(int *)arg = adp->va_index; 633 break; 634 635 case FBIO_ADPTYPE: /* get video adapter type */ 636 *(int *)arg = adp->va_type; 637 break; 638 639 case FBIO_ADPINFO: /* get video adapter info */ 640 ((video_adapter_info_t *)arg)->va_index = adp->va_index; 641 ((video_adapter_info_t *)arg)->va_type = adp->va_type; 642 bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name, 643 imin(strlen(adp->va_name) + 1, 644 sizeof(((video_adapter_info_t *)arg)->va_name))); 645 ((video_adapter_info_t *)arg)->va_unit = adp->va_unit; 646 ((video_adapter_info_t *)arg)->va_flags = adp->va_flags; 647 ((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base; 648 ((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size; 649 ((video_adapter_info_t *)arg)->va_crtc_addr = adp->va_crtc_addr; 650 ((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base; 651 ((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size; 652 ((video_adapter_info_t *)arg)->va_window 653 #if defined(__amd64__) || defined(__i386__) 654 = vtophys(adp->va_window); 655 #else 656 = adp->va_window; 657 #endif 658 ((video_adapter_info_t *)arg)->va_window_size 659 = adp->va_window_size; 660 ((video_adapter_info_t *)arg)->va_window_gran 661 = adp->va_window_gran; 662 ((video_adapter_info_t *)arg)->va_window_orig 663 = adp->va_window_orig; 664 ((video_adapter_info_t *)arg)->va_unused0 665 #if defined(__amd64__) || defined(__i386__) 666 = adp->va_buffer != 0 ? vtophys(adp->va_buffer) : 0; 667 #else 668 = adp->va_buffer; 669 #endif 670 ((video_adapter_info_t *)arg)->va_buffer_size 671 = adp->va_buffer_size; 672 ((video_adapter_info_t *)arg)->va_mode = adp->va_mode; 673 ((video_adapter_info_t *)arg)->va_initial_mode 674 = adp->va_initial_mode; 675 ((video_adapter_info_t *)arg)->va_initial_bios_mode 676 = adp->va_initial_bios_mode; 677 ((video_adapter_info_t *)arg)->va_line_width 678 = adp->va_line_width; 679 ((video_adapter_info_t *)arg)->va_disp_start.x 680 = adp->va_disp_start.x; 681 ((video_adapter_info_t *)arg)->va_disp_start.y 682 = adp->va_disp_start.y; 683 break; 684 685 case FBIO_MODEINFO: /* get mode information */ 686 error = vidd_get_info(adp, 687 ((video_info_t *)arg)->vi_mode, 688 (video_info_t *)arg); 689 if (error) 690 error = ENODEV; 691 break; 692 693 case FBIO_FINDMODE: /* find a matching video mode */ 694 error = vidd_query_mode(adp, (video_info_t *)arg); 695 break; 696 697 case FBIO_GETMODE: /* get video mode */ 698 *(int *)arg = adp->va_mode; 699 break; 700 701 case FBIO_SETMODE: /* set video mode */ 702 error = vidd_set_mode(adp, *(int *)arg); 703 if (error) 704 error = ENODEV; /* EINVAL? */ 705 break; 706 707 case FBIO_GETWINORG: /* get frame buffer window origin */ 708 *(u_int *)arg = adp->va_window_orig; 709 break; 710 711 case FBIO_GETDISPSTART: /* get display start address */ 712 ((video_display_start_t *)arg)->x = adp->va_disp_start.x; 713 ((video_display_start_t *)arg)->y = adp->va_disp_start.y; 714 break; 715 716 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */ 717 *(u_int *)arg = adp->va_line_width; 718 break; 719 720 case FBIO_BLANK: /* blank display */ 721 error = vidd_blank_display(adp, *(int *)arg); 722 break; 723 724 case FBIO_GETPALETTE: /* get color palette */ 725 case FBIO_SETPALETTE: /* set color palette */ 726 /* XXX */ 727 728 case FBIOPUTCMAP: 729 case FBIOGETCMAP: 730 case FBIOPUTCMAPI: 731 case FBIOGETCMAPI: 732 /* XXX */ 733 734 case FBIO_SETWINORG: /* set frame buffer window origin */ 735 case FBIO_SETDISPSTART: /* set display start address */ 736 case FBIO_SETLINEWIDTH: /* set scan line width in pixel */ 737 738 case FBIOGTYPE: 739 case FBIOGATTR: 740 case FBIOSVIDEO: 741 case FBIOGVIDEO: 742 case FBIOVERTICAL: 743 case FBIOSCURSOR: 744 case FBIOGCURSOR: 745 case FBIOSCURPOS: 746 case FBIOGCURPOS: 747 case FBIOGCURMAX: 748 case FBIOMONINFO: 749 case FBIOGXINFO: 750 751 default: 752 error = ENODEV; 753 break; 754 } 755 756 splx(s); 757 return error; 758 } 759