Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/dev/fb/vesa.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * Copyright (c) 2009-2013 Jung-uk Kim <jkim@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer as 11 * the first lines of this file unmodified. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include "opt_vga.h" 32 #include "opt_vesa.h" 33 34 #ifndef VGA_NO_MODE_CHANGE 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/lock.h> 41 #include <sys/module.h> 42 #include <sys/malloc.h> 43 #include <sys/mutex.h> 44 #include <sys/fbio.h> 45 #include <sys/sysctl.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_extern.h> 49 #include <vm/vm_kern.h> 50 #include <vm/vm_param.h> 51 #include <vm/pmap.h> 52 53 #include <machine/pc/bios.h> 54 #include <dev/fb/vesa.h> 55 56 #include <dev/fb/fbreg.h> 57 #include <dev/fb/vgareg.h> 58 59 #include <dev/pci/pcivar.h> 60 61 #include <isa/isareg.h> 62 63 #include <compat/x86bios/x86bios.h> 64 65 #define VESA_BIOS_OFFSET 0xc0000 66 #define VESA_PALETTE_SIZE (256 * 4) 67 #define VESA_VIA_CLE266 "VIA CLE266\r\n" 68 69 #ifndef VESA_DEBUG 70 #define VESA_DEBUG 0 71 #endif 72 73 /* VESA video adapter state buffer stub */ 74 struct adp_state { 75 int sig; 76 #define V_STATE_SIG 0x61736576 77 u_char regs[1]; 78 }; 79 typedef struct adp_state adp_state_t; 80 81 static struct mtx vesa_lock; 82 MTX_SYSINIT(vesa_lock, &vesa_lock, "VESA lock", MTX_DEF); 83 84 static int vesa_state; 85 static void *vesa_state_buf; 86 static uint32_t vesa_state_buf_offs; 87 static size_t vesa_state_buf_size; 88 89 static u_char *vesa_palette; 90 static uint32_t vesa_palette_offs; 91 92 static void *vesa_vmem_buf; 93 static size_t vesa_vmem_max; 94 95 static void *vesa_bios; 96 static uint32_t vesa_bios_offs; 97 static uint32_t vesa_bios_int10; 98 static size_t vesa_bios_size; 99 100 /* VESA video adapter */ 101 static video_adapter_t *vesa_adp; 102 103 static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging"); 104 static int vesa_shadow_rom; 105 TUNABLE_INT("debug.vesa.shadow_rom", &vesa_shadow_rom); 106 SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 107 0, "Enable video BIOS shadow"); 108 109 /* VESA functions */ 110 #if 0 111 static int vesa_nop(void); 112 #endif 113 static int vesa_error(void); 114 static vi_probe_t vesa_probe; 115 static vi_init_t vesa_init; 116 static vi_get_info_t vesa_get_info; 117 static vi_query_mode_t vesa_query_mode; 118 static vi_set_mode_t vesa_set_mode; 119 static vi_save_font_t vesa_save_font; 120 static vi_load_font_t vesa_load_font; 121 static vi_show_font_t vesa_show_font; 122 static vi_save_palette_t vesa_save_palette; 123 static vi_load_palette_t vesa_load_palette; 124 static vi_set_border_t vesa_set_border; 125 static vi_save_state_t vesa_save_state; 126 static vi_load_state_t vesa_load_state; 127 static vi_set_win_org_t vesa_set_origin; 128 static vi_read_hw_cursor_t vesa_read_hw_cursor; 129 static vi_set_hw_cursor_t vesa_set_hw_cursor; 130 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 131 static vi_blank_display_t vesa_blank_display; 132 static vi_mmap_t vesa_mmap; 133 static vi_ioctl_t vesa_ioctl; 134 static vi_clear_t vesa_clear; 135 static vi_fill_rect_t vesa_fill_rect; 136 static vi_bitblt_t vesa_bitblt; 137 static vi_diag_t vesa_diag; 138 static int vesa_bios_info(int level); 139 140 static video_switch_t vesavidsw = { 141 vesa_probe, 142 vesa_init, 143 vesa_get_info, 144 vesa_query_mode, 145 vesa_set_mode, 146 vesa_save_font, 147 vesa_load_font, 148 vesa_show_font, 149 vesa_save_palette, 150 vesa_load_palette, 151 vesa_set_border, 152 vesa_save_state, 153 vesa_load_state, 154 vesa_set_origin, 155 vesa_read_hw_cursor, 156 vesa_set_hw_cursor, 157 vesa_set_hw_cursor_shape, 158 vesa_blank_display, 159 vesa_mmap, 160 vesa_ioctl, 161 vesa_clear, 162 vesa_fill_rect, 163 vesa_bitblt, 164 vesa_error, 165 vesa_error, 166 vesa_diag, 167 }; 168 169 static video_switch_t *prevvidsw; 170 171 /* VESA BIOS video modes */ 172 #define VESA_MAXMODES 64 173 #define EOT (-1) 174 #define NA (-2) 175 176 #define MODE_TABLE_DELTA 8 177 178 static int vesa_vmode_max; 179 static video_info_t *vesa_vmode; 180 181 static int vesa_init_done; 182 static struct vesa_info *vesa_adp_info; 183 static u_int16_t *vesa_vmodetab; 184 static char *vesa_oemstr; 185 static char *vesa_venderstr; 186 static char *vesa_prodstr; 187 static char *vesa_revstr; 188 189 /* local macros and functions */ 190 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 191 192 static int int10_set_mode(int mode); 193 static int vesa_bios_post(void); 194 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 195 static int vesa_bios_set_mode(int mode); 196 #if 0 197 static int vesa_bios_get_dac(void); 198 #endif 199 static int vesa_bios_set_dac(int bits); 200 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 201 int bits); 202 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 203 u_char *b, int bits); 204 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 205 int bits); 206 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 207 u_char *b, int bits); 208 #define STATE_SIZE 0 209 #define STATE_SAVE 1 210 #define STATE_LOAD 2 211 static size_t vesa_bios_state_buf_size(int); 212 static int vesa_bios_save_restore(int code, void *p); 213 #ifdef MODE_TABLE_BROKEN 214 static int vesa_bios_get_line_length(void); 215 #endif 216 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 217 #if 0 218 static int vesa_bios_get_start(int *x, int *y); 219 #endif 220 static int vesa_bios_set_start(int x, int y); 221 static int vesa_map_gen_mode_num(int type, int color, int mode); 222 static int vesa_translate_flags(u_int16_t vflags); 223 static int vesa_translate_mmodel(u_int8_t vmodel); 224 static int vesa_get_bpscanline(struct vesa_mode *vmode); 225 static int vesa_bios_init(void); 226 static void vesa_bios_uninit(void); 227 static void vesa_clear_modes(video_info_t *info, int color); 228 229 #if 0 230 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 231 #endif 232 233 /* INT 10 BIOS calls */ 234 static int 235 int10_set_mode(int mode) 236 { 237 x86regs_t regs; 238 239 x86bios_init_regs(®s); 240 regs.R_AL = mode; 241 242 x86bios_intr(®s, 0x10); 243 244 return (0); 245 } 246 247 static int 248 vesa_bios_post(void) 249 { 250 x86regs_t regs; 251 devclass_t dc; 252 device_t *devs; 253 device_t dev; 254 int count, i, is_pci; 255 256 if (x86bios_get_orm(vesa_bios_offs) == NULL) 257 return (1); 258 259 dev = NULL; 260 is_pci = 0; 261 262 /* Find the matching PCI video controller. */ 263 dc = devclass_find("vgapci"); 264 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 265 for (i = 0; i < count; i++) 266 if (device_get_flags(devs[i]) != 0 && 267 x86bios_match_device(vesa_bios_offs, devs[i])) { 268 dev = devs[i]; 269 is_pci = 1; 270 break; 271 } 272 free(devs, M_TEMP); 273 } 274 275 /* Try VGA if a PCI device is not found. */ 276 if (dev == NULL) { 277 dc = devclass_find(VGA_DRIVER_NAME); 278 if (dc != NULL) 279 dev = devclass_get_device(dc, 0); 280 } 281 282 if (bootverbose) 283 printf("%s: calling BIOS POST\n", 284 dev == NULL ? "VESA" : device_get_nameunit(dev)); 285 286 x86bios_init_regs(®s); 287 if (is_pci) { 288 regs.R_AH = pci_get_bus(dev); 289 regs.R_AL = (pci_get_slot(dev) << 3) | 290 (pci_get_function(dev) & 0x07); 291 } 292 regs.R_DL = 0x80; 293 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 294 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 295 296 if (x86bios_get_intr(0x10) == 0) 297 return (1); 298 299 return (0); 300 } 301 302 /* VESA BIOS calls */ 303 static int 304 vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 305 { 306 x86regs_t regs; 307 uint32_t offs; 308 void *buf; 309 310 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 311 if (buf == NULL) 312 return (1); 313 314 x86bios_init_regs(®s); 315 regs.R_AX = 0x4f01; 316 regs.R_CX = mode; 317 318 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 319 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 320 321 x86bios_intr(®s, 0x10); 322 323 if (regs.R_AX != 0x004f) { 324 x86bios_free(buf, sizeof(*vmode)); 325 return (1); 326 } 327 328 bcopy(buf, vmode, sizeof(*vmode)); 329 x86bios_free(buf, sizeof(*vmode)); 330 331 return (0); 332 } 333 334 static int 335 vesa_bios_set_mode(int mode) 336 { 337 x86regs_t regs; 338 339 x86bios_init_regs(®s); 340 regs.R_AX = 0x4f02; 341 regs.R_BX = mode; 342 343 x86bios_intr(®s, 0x10); 344 345 return (regs.R_AX != 0x004f); 346 } 347 348 #if 0 349 static int 350 vesa_bios_get_dac(void) 351 { 352 x86regs_t regs; 353 354 x86bios_init_regs(®s); 355 regs.R_AX = 0x4f08; 356 regs.R_BL = 1; 357 358 x86bios_intr(®s, 0x10); 359 360 if (regs.R_AX != 0x004f) 361 return (6); 362 363 return (regs.R_BH); 364 } 365 #endif 366 367 static int 368 vesa_bios_set_dac(int bits) 369 { 370 x86regs_t regs; 371 372 x86bios_init_regs(®s); 373 regs.R_AX = 0x4f08; 374 /* regs.R_BL = 0; */ 375 regs.R_BH = bits; 376 377 x86bios_intr(®s, 0x10); 378 379 if (regs.R_AX != 0x004f) 380 return (6); 381 382 return (regs.R_BH); 383 } 384 385 static int 386 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 387 { 388 x86regs_t regs; 389 int i; 390 391 x86bios_init_regs(®s); 392 regs.R_AX = 0x4f09; 393 regs.R_BL = 1; 394 regs.R_CX = colors; 395 regs.R_DX = start; 396 397 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 398 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 399 400 bits = 8 - bits; 401 mtx_lock(&vesa_lock); 402 x86bios_intr(®s, 0x10); 403 if (regs.R_AX != 0x004f) { 404 mtx_unlock(&vesa_lock); 405 return (1); 406 } 407 for (i = 0; i < colors; ++i) { 408 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 409 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 410 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 411 } 412 mtx_unlock(&vesa_lock); 413 414 return (0); 415 } 416 417 static int 418 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 419 int bits) 420 { 421 x86regs_t regs; 422 int i; 423 424 x86bios_init_regs(®s); 425 regs.R_AX = 0x4f09; 426 regs.R_BL = 1; 427 regs.R_CX = colors; 428 regs.R_DX = start; 429 430 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 431 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 432 433 bits = 8 - bits; 434 mtx_lock(&vesa_lock); 435 x86bios_intr(®s, 0x10); 436 if (regs.R_AX != 0x004f) { 437 mtx_unlock(&vesa_lock); 438 return (1); 439 } 440 for (i = 0; i < colors; ++i) { 441 r[i] = vesa_palette[i * 4 + 2] << bits; 442 g[i] = vesa_palette[i * 4 + 1] << bits; 443 b[i] = vesa_palette[i * 4] << bits; 444 } 445 mtx_unlock(&vesa_lock); 446 447 return (0); 448 } 449 450 static int 451 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 452 { 453 x86regs_t regs; 454 int i; 455 456 x86bios_init_regs(®s); 457 regs.R_AX = 0x4f09; 458 /* regs.R_BL = 0; */ 459 regs.R_CX = colors; 460 regs.R_DX = start; 461 462 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 463 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 464 465 bits = 8 - bits; 466 mtx_lock(&vesa_lock); 467 for (i = 0; i < colors; ++i) { 468 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 469 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 470 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 471 vesa_palette[i * 4 + 3] = 0; 472 } 473 x86bios_intr(®s, 0x10); 474 mtx_unlock(&vesa_lock); 475 476 return (regs.R_AX != 0x004f); 477 } 478 479 static int 480 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 481 int bits) 482 { 483 x86regs_t regs; 484 int i; 485 486 x86bios_init_regs(®s); 487 regs.R_AX = 0x4f09; 488 /* regs.R_BL = 0; */ 489 regs.R_CX = colors; 490 regs.R_DX = start; 491 492 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 493 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 494 495 bits = 8 - bits; 496 mtx_lock(&vesa_lock); 497 for (i = 0; i < colors; ++i) { 498 vesa_palette[i * 4] = b[i] >> bits; 499 vesa_palette[i * 4 + 1] = g[i] >> bits; 500 vesa_palette[i * 4 + 2] = r[i] >> bits; 501 vesa_palette[i * 4 + 3] = 0; 502 } 503 x86bios_intr(®s, 0x10); 504 mtx_unlock(&vesa_lock); 505 506 return (regs.R_AX != 0x004f); 507 } 508 509 static size_t 510 vesa_bios_state_buf_size(int state) 511 { 512 x86regs_t regs; 513 514 x86bios_init_regs(®s); 515 regs.R_AX = 0x4f04; 516 /* regs.R_DL = STATE_SIZE; */ 517 regs.R_CX = state; 518 519 x86bios_intr(®s, 0x10); 520 521 if (regs.R_AX != 0x004f) 522 return (0); 523 524 return (regs.R_BX * 64); 525 } 526 527 static int 528 vesa_bios_save_restore(int code, void *p) 529 { 530 x86regs_t regs; 531 532 if (code != STATE_SAVE && code != STATE_LOAD) 533 return (1); 534 535 x86bios_init_regs(®s); 536 regs.R_AX = 0x4f04; 537 regs.R_DL = code; 538 regs.R_CX = vesa_state; 539 540 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 541 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 542 543 mtx_lock(&vesa_lock); 544 switch (code) { 545 case STATE_SAVE: 546 x86bios_intr(®s, 0x10); 547 if (regs.R_AX == 0x004f) 548 bcopy(vesa_state_buf, p, vesa_state_buf_size); 549 break; 550 case STATE_LOAD: 551 bcopy(p, vesa_state_buf, vesa_state_buf_size); 552 x86bios_intr(®s, 0x10); 553 break; 554 } 555 mtx_unlock(&vesa_lock); 556 557 return (regs.R_AX != 0x004f); 558 } 559 560 #ifdef MODE_TABLE_BROKEN 561 static int 562 vesa_bios_get_line_length(void) 563 { 564 x86regs_t regs; 565 566 x86bios_init_regs(®s); 567 regs.R_AX = 0x4f06; 568 regs.R_BL = 1; 569 570 x86bios_intr(®s, 0x10); 571 572 if (regs.R_AX != 0x004f) 573 return (-1); 574 575 return (regs.R_BX); 576 } 577 #endif 578 579 static int 580 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 581 { 582 x86regs_t regs; 583 584 x86bios_init_regs(®s); 585 regs.R_AX = 0x4f06; 586 /* regs.R_BL = 0; */ 587 regs.R_CX = pixel; 588 589 x86bios_intr(®s, 0x10); 590 591 #if VESA_DEBUG > 1 592 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 593 #endif 594 if (regs.R_AX != 0x004f) 595 return (-1); 596 597 if (bytes != NULL) 598 *bytes = regs.R_BX; 599 if (lines != NULL) 600 *lines = regs.R_DX; 601 602 return (0); 603 } 604 605 #if 0 606 static int 607 vesa_bios_get_start(int *x, int *y) 608 { 609 x86regs_t regs; 610 611 x86bios_init_regs(®s); 612 regs.R_AX = 0x4f07; 613 regs.R_BL = 1; 614 615 x86bios_intr(®s, 0x10); 616 617 if (regs.R_AX != 0x004f) 618 return (-1); 619 620 *x = regs.R_CX; 621 *y = regs.R_DX; 622 623 return (0); 624 } 625 #endif 626 627 static int 628 vesa_bios_set_start(int x, int y) 629 { 630 x86regs_t regs; 631 632 x86bios_init_regs(®s); 633 regs.R_AX = 0x4f07; 634 regs.R_BL = 0x80; 635 regs.R_CX = x; 636 regs.R_DX = y; 637 638 x86bios_intr(®s, 0x10); 639 640 return (regs.R_AX != 0x004f); 641 } 642 643 /* map a generic video mode to a known mode */ 644 static int 645 vesa_map_gen_mode_num(int type, int color, int mode) 646 { 647 static struct { 648 int from; 649 int to; 650 } mode_map[] = { 651 { M_TEXT_132x25, M_VESA_C132x25 }, 652 { M_TEXT_132x43, M_VESA_C132x43 }, 653 { M_TEXT_132x50, M_VESA_C132x50 }, 654 { M_TEXT_132x60, M_VESA_C132x60 }, 655 }; 656 int i; 657 658 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 659 if (mode_map[i].from == mode) 660 return (mode_map[i].to); 661 } 662 return (mode); 663 } 664 665 static int 666 vesa_translate_flags(u_int16_t vflags) 667 { 668 static struct { 669 u_int16_t mask; 670 int set; 671 int reset; 672 } ftable[] = { 673 { V_MODECOLOR, V_INFO_COLOR, 0 }, 674 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 675 { V_MODELFB, V_INFO_LINEAR, 0 }, 676 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 677 }; 678 int flags; 679 int i; 680 681 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 682 flags |= (vflags & ftable[i].mask) ? 683 ftable[i].set : ftable[i].reset; 684 } 685 return (flags); 686 } 687 688 static int 689 vesa_translate_mmodel(u_int8_t vmodel) 690 { 691 static struct { 692 u_int8_t vmodel; 693 int mmodel; 694 } mtable[] = { 695 { V_MMTEXT, V_INFO_MM_TEXT }, 696 { V_MMCGA, V_INFO_MM_CGA }, 697 { V_MMHGC, V_INFO_MM_HGC }, 698 { V_MMEGA, V_INFO_MM_PLANAR }, 699 { V_MMPACKED, V_INFO_MM_PACKED }, 700 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 701 }; 702 int i; 703 704 for (i = 0; mtable[i].mmodel >= 0; ++i) { 705 if (mtable[i].vmodel == vmodel) 706 return (mtable[i].mmodel); 707 } 708 return (V_INFO_MM_OTHER); 709 } 710 711 static int 712 vesa_get_bpscanline(struct vesa_mode *vmode) 713 { 714 int bpsl; 715 716 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 717 /* Find the minimum length. */ 718 switch (vmode->v_bpp / vmode->v_planes) { 719 case 1: 720 bpsl = vmode->v_width / 8; 721 break; 722 case 2: 723 bpsl = vmode->v_width / 4; 724 break; 725 case 4: 726 bpsl = vmode->v_width / 2; 727 break; 728 default: 729 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 730 bpsl /= vmode->v_planes; 731 break; 732 } 733 734 /* Use VBE 3.0 information if it looks sane. */ 735 if ((vmode->v_modeattr & V_MODELFB) != 0 && 736 vesa_adp_info->v_version >= 0x0300 && 737 vmode->v_linbpscanline > bpsl) 738 return (vmode->v_linbpscanline); 739 740 /* Return the minimum if the mode table looks absurd. */ 741 if (vmode->v_bpscanline < bpsl) 742 return (bpsl); 743 } 744 745 return (vmode->v_bpscanline); 746 } 747 748 #define VESA_MAXSTR 256 749 750 #define VESA_STRCPY(dst, src) do { \ 751 char *str; \ 752 int i; \ 753 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 754 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 755 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 756 dst[i] = str[i]; \ 757 dst[i] = '\0'; \ 758 } while (0) 759 760 static int 761 vesa_bios_init(void) 762 { 763 struct vesa_mode vmode; 764 struct vesa_info *buf; 765 video_info_t *p; 766 x86regs_t regs; 767 size_t bsize; 768 size_t msize; 769 void *vmbuf; 770 uint8_t *vbios; 771 uint32_t offs; 772 uint16_t vers; 773 int is_via_cle266; 774 int modes; 775 int i; 776 777 if (vesa_init_done) 778 return (0); 779 780 vesa_bios_offs = VESA_BIOS_OFFSET; 781 782 /* 783 * If the VBE real mode interrupt vector is not found, try BIOS POST. 784 */ 785 vesa_bios_int10 = x86bios_get_intr(0x10); 786 if (vesa_bios_int10 == 0) { 787 if (vesa_bios_post() != 0) 788 return (1); 789 vesa_bios_int10 = x86bios_get_intr(0x10); 790 if (vesa_bios_int10 == 0) 791 return (1); 792 } 793 794 /* 795 * Shadow video ROM. 796 */ 797 offs = vesa_bios_int10; 798 if (vesa_shadow_rom) { 799 vbios = x86bios_get_orm(vesa_bios_offs); 800 if (vbios != NULL) { 801 vesa_bios_size = vbios[2] * 512; 802 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 803 (vesa_bios_int10 & 0xffff0000) && 804 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 805 vesa_bios = x86bios_alloc(&vesa_bios_offs, 806 vesa_bios_size, M_WAITOK); 807 bcopy(vbios, vesa_bios, vesa_bios_size); 808 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 809 (vesa_bios_int10 & 0xffff); 810 x86bios_set_intr(0x10, offs); 811 } 812 } 813 if (vesa_bios == NULL) 814 printf("VESA: failed to shadow video ROM\n"); 815 } 816 if (bootverbose) 817 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 818 (offs >> 16) & 0xffff, offs & 0xffff); 819 820 x86bios_init_regs(®s); 821 regs.R_AX = 0x4f00; 822 823 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 824 825 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 826 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 827 828 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 829 x86bios_intr(®s, 0x10); 830 831 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 832 goto fail; 833 834 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 835 bcopy(vmbuf, buf, sizeof(*buf)); 836 837 if (bootverbose) { 838 printf("VESA: information block\n"); 839 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 840 } 841 842 vers = buf->v_version = le16toh(buf->v_version); 843 buf->v_oemstr = le32toh(buf->v_oemstr); 844 buf->v_flags = le32toh(buf->v_flags); 845 buf->v_modetable = le32toh(buf->v_modetable); 846 buf->v_memsize = le16toh(buf->v_memsize); 847 buf->v_revision = le16toh(buf->v_revision); 848 buf->v_venderstr = le32toh(buf->v_venderstr); 849 buf->v_prodstr = le32toh(buf->v_prodstr); 850 buf->v_revstr = le32toh(buf->v_revstr); 851 852 if (vers < 0x0102) { 853 printf("VESA: VBE version %d.%d is not supported; " 854 "version 1.2 or later is required.\n", 855 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 856 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 857 goto fail; 858 } 859 860 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 861 if (vers >= 0x0200) { 862 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 863 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 864 VESA_STRCPY(vesa_revstr, buf->v_revstr); 865 } 866 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 867 sizeof(VESA_VIA_CLE266)) == 0; 868 869 if (buf->v_modetable == 0) 870 goto fail; 871 872 msize = (size_t)buf->v_memsize * 64 * 1024; 873 874 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 875 876 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 877 (vesa_vmodetab[i] != 0xffff); ++i) { 878 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 879 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 880 continue; 881 882 vmode.v_modeattr = le16toh(vmode.v_modeattr); 883 vmode.v_wgran = le16toh(vmode.v_wgran); 884 vmode.v_wsize = le16toh(vmode.v_wsize); 885 vmode.v_waseg = le16toh(vmode.v_waseg); 886 vmode.v_wbseg = le16toh(vmode.v_wbseg); 887 vmode.v_posfunc = le32toh(vmode.v_posfunc); 888 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 889 vmode.v_width = le16toh(vmode.v_width); 890 vmode.v_height = le16toh(vmode.v_height); 891 vmode.v_lfb = le32toh(vmode.v_lfb); 892 vmode.v_offscreen = le32toh(vmode.v_offscreen); 893 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 894 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 895 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 896 897 /* reject unsupported modes */ 898 #if 0 899 if ((vmode.v_modeattr & 900 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 901 (V_MODESUPP | V_MODEOPTINFO)) 902 continue; 903 #else 904 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 905 #if VESA_DEBUG > 1 906 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 907 " attr = %x\n", 908 vmode.v_modeattr & V_MODEGRAPHICS ? 909 "graphics" : "text", 910 vmode.v_width, vmode.v_height, vmode.v_bpp, 911 vmode.v_modeattr); 912 #endif 913 continue; 914 } 915 #endif 916 917 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 918 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 919 bsize *= vmode.v_planes; 920 921 /* Does it have enough memory to support this mode? */ 922 if (msize < bsize) { 923 #if VESA_DEBUG > 1 924 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 925 " attr = %x, not enough memory\n", 926 vmode.v_modeattr & V_MODEGRAPHICS ? 927 "graphics" : "text", 928 vmode.v_width, vmode.v_height, vmode.v_bpp, 929 vmode.v_modeattr); 930 #endif 931 continue; 932 } 933 if (bsize > vesa_vmem_max) 934 vesa_vmem_max = bsize; 935 936 /* expand the array if necessary */ 937 if (modes >= vesa_vmode_max) { 938 vesa_vmode_max += MODE_TABLE_DELTA; 939 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 940 M_DEVBUF, M_WAITOK); 941 #if VESA_DEBUG > 1 942 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 943 modes, vesa_vmode_max); 944 #endif 945 if (modes > 0) { 946 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 947 free(vesa_vmode, M_DEVBUF); 948 } 949 vesa_vmode = p; 950 } 951 952 #if VESA_DEBUG > 1 953 printf("Found VESA %s mode: %d x %d x %d bpp\n", 954 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 955 vmode.v_width, vmode.v_height, vmode.v_bpp); 956 #endif 957 if (is_via_cle266) { 958 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 959 vmode.v_width &= 0xff; 960 vmode.v_waseg = 0xb8000 >> 4; 961 } 962 } 963 964 /* copy some fields */ 965 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 966 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 967 vesa_vmode[modes].vi_width = vmode.v_width; 968 vesa_vmode[modes].vi_height = vmode.v_height; 969 vesa_vmode[modes].vi_depth = vmode.v_bpp; 970 vesa_vmode[modes].vi_planes = vmode.v_planes; 971 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 972 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 973 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 974 /* XXX window B */ 975 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 976 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 977 if (vmode.v_modeattr & V_MODELFB) 978 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 979 vesa_vmode[modes].vi_buffer_size = bsize; 980 vesa_vmode[modes].vi_mem_model = 981 vesa_translate_mmodel(vmode.v_memmodel); 982 switch (vesa_vmode[modes].vi_mem_model) { 983 case V_INFO_MM_DIRECT: 984 if ((vmode.v_modeattr & V_MODELFB) != 0 && 985 vers >= 0x0300) { 986 vesa_vmode[modes].vi_pixel_fields[0] = 987 vmode.v_linredfieldpos; 988 vesa_vmode[modes].vi_pixel_fields[1] = 989 vmode.v_lingreenfieldpos; 990 vesa_vmode[modes].vi_pixel_fields[2] = 991 vmode.v_linbluefieldpos; 992 vesa_vmode[modes].vi_pixel_fields[3] = 993 vmode.v_linresfieldpos; 994 vesa_vmode[modes].vi_pixel_fsizes[0] = 995 vmode.v_linredmasksize; 996 vesa_vmode[modes].vi_pixel_fsizes[1] = 997 vmode.v_lingreenmasksize; 998 vesa_vmode[modes].vi_pixel_fsizes[2] = 999 vmode.v_linbluemasksize; 1000 vesa_vmode[modes].vi_pixel_fsizes[3] = 1001 vmode.v_linresmasksize; 1002 } else { 1003 vesa_vmode[modes].vi_pixel_fields[0] = 1004 vmode.v_redfieldpos; 1005 vesa_vmode[modes].vi_pixel_fields[1] = 1006 vmode.v_greenfieldpos; 1007 vesa_vmode[modes].vi_pixel_fields[2] = 1008 vmode.v_bluefieldpos; 1009 vesa_vmode[modes].vi_pixel_fields[3] = 1010 vmode.v_resfieldpos; 1011 vesa_vmode[modes].vi_pixel_fsizes[0] = 1012 vmode.v_redmasksize; 1013 vesa_vmode[modes].vi_pixel_fsizes[1] = 1014 vmode.v_greenmasksize; 1015 vesa_vmode[modes].vi_pixel_fsizes[2] = 1016 vmode.v_bluemasksize; 1017 vesa_vmode[modes].vi_pixel_fsizes[3] = 1018 vmode.v_resmasksize; 1019 } 1020 /* FALLTHROUGH */ 1021 case V_INFO_MM_PACKED: 1022 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1023 break; 1024 } 1025 vesa_vmode[modes].vi_flags = 1026 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1027 1028 ++modes; 1029 } 1030 if (vesa_vmode != NULL) 1031 vesa_vmode[modes].vi_mode = EOT; 1032 1033 if (bootverbose) 1034 printf("VESA: %d mode(s) found\n", modes); 1035 1036 if (modes == 0) 1037 goto fail; 1038 1039 x86bios_free(vmbuf, sizeof(*buf)); 1040 1041 /* Probe supported save/restore states. */ 1042 for (i = 0; i < 4; i++) 1043 if (vesa_bios_state_buf_size(1 << i) > 0) 1044 vesa_state |= 1 << i; 1045 if (vesa_state != 0) 1046 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1047 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1048 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1049 if (vesa_state_buf_size > 0) { 1050 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1051 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1052 } 1053 1054 return (0); 1055 1056 fail: 1057 x86bios_free(vmbuf, sizeof(buf)); 1058 vesa_bios_uninit(); 1059 return (1); 1060 } 1061 1062 static void 1063 vesa_bios_uninit(void) 1064 { 1065 1066 if (vesa_bios != NULL) { 1067 x86bios_set_intr(0x10, vesa_bios_int10); 1068 vesa_bios_offs = VESA_BIOS_OFFSET; 1069 x86bios_free(vesa_bios, vesa_bios_size); 1070 vesa_bios = NULL; 1071 } 1072 if (vesa_adp_info != NULL) { 1073 free(vesa_adp_info, M_DEVBUF); 1074 vesa_adp_info = NULL; 1075 } 1076 if (vesa_oemstr != NULL) { 1077 free(vesa_oemstr, M_DEVBUF); 1078 vesa_oemstr = NULL; 1079 } 1080 if (vesa_venderstr != NULL) { 1081 free(vesa_venderstr, M_DEVBUF); 1082 vesa_venderstr = NULL; 1083 } 1084 if (vesa_prodstr != NULL) { 1085 free(vesa_prodstr, M_DEVBUF); 1086 vesa_prodstr = NULL; 1087 } 1088 if (vesa_revstr != NULL) { 1089 free(vesa_revstr, M_DEVBUF); 1090 vesa_revstr = NULL; 1091 } 1092 if (vesa_vmode != NULL) { 1093 free(vesa_vmode, M_DEVBUF); 1094 vesa_vmode = NULL; 1095 } 1096 if (vesa_palette != NULL) { 1097 x86bios_free(vesa_palette, 1098 VESA_PALETTE_SIZE + vesa_state_buf_size); 1099 vesa_palette = NULL; 1100 } 1101 } 1102 1103 static void 1104 vesa_clear_modes(video_info_t *info, int color) 1105 { 1106 while (info->vi_mode != EOT) { 1107 if ((info->vi_flags & V_INFO_COLOR) != color) 1108 info->vi_mode = NA; 1109 ++info; 1110 } 1111 } 1112 1113 /* entry points */ 1114 1115 static int 1116 vesa_configure(int flags) 1117 { 1118 video_adapter_t *adp; 1119 int adapters; 1120 int error; 1121 int i; 1122 1123 if (vesa_init_done) 1124 return (0); 1125 if (flags & VIO_PROBE_ONLY) 1126 return (0); 1127 1128 /* 1129 * If the VESA module has already been loaded, abort loading 1130 * the module this time. 1131 */ 1132 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1133 if (adp->va_flags & V_ADP_VESA) 1134 return (ENXIO); 1135 if (adp->va_type == KD_VGA) 1136 break; 1137 } 1138 1139 /* 1140 * The VGA adapter is not found. This is because either 1141 * 1) the VGA driver has not been initialized, or 2) the VGA card 1142 * is not present. If 1) is the case, we shall defer 1143 * initialization for now and try again later. 1144 */ 1145 if (adp == NULL) { 1146 vga_sub_configure = vesa_configure; 1147 return (ENODEV); 1148 } 1149 1150 /* count number of registered adapters */ 1151 for (++i; vid_get_adapter(i) != NULL; ++i) 1152 ; 1153 adapters = i; 1154 1155 /* call VESA BIOS */ 1156 vesa_adp = adp; 1157 if (vesa_bios_init()) { 1158 vesa_adp = NULL; 1159 return (ENXIO); 1160 } 1161 vesa_adp->va_flags |= V_ADP_VESA; 1162 1163 /* remove conflicting modes if we have more than one adapter */ 1164 if (adapters > 1) { 1165 vesa_clear_modes(vesa_vmode, 1166 (vesa_adp->va_flags & V_ADP_COLOR) ? 1167 V_INFO_COLOR : 0); 1168 } 1169 1170 if ((error = vesa_load_ioctl()) == 0) { 1171 prevvidsw = vidsw[vesa_adp->va_index]; 1172 vidsw[vesa_adp->va_index] = &vesavidsw; 1173 vesa_init_done = TRUE; 1174 } else { 1175 vesa_adp = NULL; 1176 return (error); 1177 } 1178 1179 return (0); 1180 } 1181 1182 #if 0 1183 static int 1184 vesa_nop(void) 1185 { 1186 1187 return (0); 1188 } 1189 #endif 1190 1191 static int 1192 vesa_error(void) 1193 { 1194 1195 return (1); 1196 } 1197 1198 static int 1199 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1200 { 1201 1202 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1203 } 1204 1205 static int 1206 vesa_init(int unit, video_adapter_t *adp, int flags) 1207 { 1208 1209 return ((*prevvidsw->init)(unit, adp, flags)); 1210 } 1211 1212 static int 1213 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1214 { 1215 int i; 1216 1217 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1218 return (0); 1219 1220 if (adp != vesa_adp) 1221 return (1); 1222 1223 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1224 vesa_adp->va_flags & V_ADP_COLOR, mode); 1225 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1226 if (vesa_vmode[i].vi_mode == NA) 1227 continue; 1228 if (vesa_vmode[i].vi_mode == mode) { 1229 *info = vesa_vmode[i]; 1230 return (0); 1231 } 1232 } 1233 return (1); 1234 } 1235 1236 static int 1237 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1238 { 1239 int i; 1240 1241 if ((*prevvidsw->query_mode)(adp, info) == 0) 1242 return (0); 1243 if (adp != vesa_adp) 1244 return (ENODEV); 1245 1246 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1247 if ((info->vi_width != 0) 1248 && (info->vi_width != vesa_vmode[i].vi_width)) 1249 continue; 1250 if ((info->vi_height != 0) 1251 && (info->vi_height != vesa_vmode[i].vi_height)) 1252 continue; 1253 if ((info->vi_cwidth != 0) 1254 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1255 continue; 1256 if ((info->vi_cheight != 0) 1257 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1258 continue; 1259 if ((info->vi_depth != 0) 1260 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1261 continue; 1262 if ((info->vi_planes != 0) 1263 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1264 continue; 1265 /* pixel format, memory model */ 1266 if ((info->vi_flags != 0) 1267 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1268 continue; 1269 *info = vesa_vmode[i]; 1270 return (0); 1271 } 1272 return (ENODEV); 1273 } 1274 1275 static int 1276 vesa_set_mode(video_adapter_t *adp, int mode) 1277 { 1278 video_info_t info; 1279 1280 if (adp != vesa_adp) 1281 return ((*prevvidsw->set_mode)(adp, mode)); 1282 1283 mode = vesa_map_gen_mode_num(adp->va_type, 1284 adp->va_flags & V_ADP_COLOR, mode); 1285 #if VESA_DEBUG > 0 1286 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1287 adp->va_mode, adp->va_mode, mode, mode); 1288 #endif 1289 /* 1290 * If the current mode is a VESA mode and the new mode is not, 1291 * restore the state of the adapter first by setting one of the 1292 * standard VGA mode, so that non-standard, extended SVGA registers 1293 * are set to the state compatible with the standard VGA modes. 1294 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1295 * the new mode correctly. 1296 */ 1297 if (VESA_MODE(adp->va_mode)) { 1298 if (!VESA_MODE(mode) && 1299 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1300 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1301 vesa_bios_set_dac(6); 1302 adp->va_flags &= ~V_ADP_DAC8; 1303 } 1304 int10_set_mode(adp->va_initial_bios_mode); 1305 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1306 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1307 /* 1308 * Once (*prevvidsw->get_info)() succeeded, 1309 * (*prevvidsw->set_mode)() below won't fail... 1310 */ 1311 } 1312 } 1313 1314 /* we may not need to handle this mode after all... */ 1315 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1316 return (0); 1317 1318 /* is the new mode supported? */ 1319 if (vesa_get_info(adp, mode, &info)) 1320 return (1); 1321 /* assert(VESA_MODE(mode)); */ 1322 1323 #if VESA_DEBUG > 0 1324 printf("VESA: about to set a VESA mode...\n"); 1325 #endif 1326 /* don't use the linear frame buffer for text modes. XXX */ 1327 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1328 info.vi_flags &= ~V_INFO_LINEAR; 1329 1330 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1331 mode |= 0x4000; 1332 if (vesa_bios_set_mode(mode | 0x8000)) 1333 return (1); 1334 1335 /* Palette format is reset by the above VBE function call. */ 1336 adp->va_flags &= ~V_ADP_DAC8; 1337 1338 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1339 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1340 vesa_bios_set_dac(8) > 6) 1341 adp->va_flags |= V_ADP_DAC8; 1342 1343 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1344 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1345 1346 #if VESA_DEBUG > 0 1347 printf("VESA: mode set!\n"); 1348 #endif 1349 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1350 vesa_adp->va_flags &= ~V_ADP_COLOR; 1351 vesa_adp->va_flags |= 1352 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1353 vesa_adp->va_crtc_addr = 1354 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1355 1356 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1357 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1358 vesa_adp->va_line_width /= info.vi_planes; 1359 1360 #ifdef MODE_TABLE_BROKEN 1361 /* If VBE function returns bigger bytes per scan line, use it. */ 1362 { 1363 int bpsl = vesa_bios_get_line_length(); 1364 if (bpsl > vesa_adp->va_line_width) { 1365 vesa_adp->va_line_width = bpsl; 1366 info.vi_buffer_size = bpsl * info.vi_height; 1367 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1368 info.vi_buffer_size *= info.vi_planes; 1369 } 1370 } 1371 #endif 1372 1373 if (info.vi_flags & V_INFO_LINEAR) { 1374 #if VESA_DEBUG > 1 1375 printf("VESA: setting up LFB\n"); 1376 #endif 1377 vesa_adp->va_buffer = 1378 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1379 vesa_vmem_max, PAT_WRITE_COMBINING); 1380 vesa_adp->va_window = vesa_adp->va_buffer; 1381 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1382 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1383 } else { 1384 vesa_adp->va_buffer = 0; 1385 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1386 vesa_adp->va_window_size = info.vi_window_size; 1387 vesa_adp->va_window_gran = info.vi_window_gran; 1388 } 1389 vesa_adp->va_buffer_size = info.vi_buffer_size; 1390 vesa_adp->va_window_orig = 0; 1391 vesa_adp->va_disp_start.x = 0; 1392 vesa_adp->va_disp_start.y = 0; 1393 #if VESA_DEBUG > 0 1394 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1395 info.vi_width, vesa_adp->va_line_width); 1396 #endif 1397 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1398 1399 /* move hardware cursor out of the way */ 1400 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1401 1402 return (0); 1403 } 1404 1405 static int 1406 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1407 u_char *data, int ch, int count) 1408 { 1409 1410 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1411 ch, count)); 1412 } 1413 1414 static int 1415 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1416 u_char *data, int ch, int count) 1417 { 1418 1419 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1420 ch, count)); 1421 } 1422 1423 static int 1424 vesa_show_font(video_adapter_t *adp, int page) 1425 { 1426 1427 return ((*prevvidsw->show_font)(adp, page)); 1428 } 1429 1430 static int 1431 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1432 { 1433 int bits; 1434 1435 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1436 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1437 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1438 return (0); 1439 } 1440 1441 return ((*prevvidsw->save_palette)(adp, palette)); 1442 } 1443 1444 static int 1445 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1446 { 1447 int bits; 1448 1449 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1450 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1451 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1452 return (0); 1453 } 1454 1455 return ((*prevvidsw->load_palette)(adp, palette)); 1456 } 1457 1458 static int 1459 vesa_set_border(video_adapter_t *adp, int color) 1460 { 1461 1462 return ((*prevvidsw->set_border)(adp, color)); 1463 } 1464 1465 static int 1466 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1467 { 1468 void *buf; 1469 size_t bsize; 1470 1471 if (adp != vesa_adp || (size == 0 && vesa_state_buf_size == 0)) 1472 return ((*prevvidsw->save_state)(adp, p, size)); 1473 1474 bsize = offsetof(adp_state_t, regs) + vesa_state_buf_size; 1475 if (size == 0) 1476 return (bsize); 1477 if (vesa_state_buf_size > 0 && size < bsize) 1478 return (EINVAL); 1479 1480 if (vesa_vmem_buf != NULL) { 1481 free(vesa_vmem_buf, M_DEVBUF); 1482 vesa_vmem_buf = NULL; 1483 } 1484 if (VESA_MODE(adp->va_mode)) { 1485 buf = (void *)adp->va_buffer; 1486 if (buf != NULL) { 1487 bsize = adp->va_buffer_size; 1488 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT); 1489 if (vesa_vmem_buf != NULL) 1490 bcopy(buf, vesa_vmem_buf, bsize); 1491 } 1492 } 1493 if (vesa_state_buf_size == 0) 1494 return ((*prevvidsw->save_state)(adp, p, size)); 1495 ((adp_state_t *)p)->sig = V_STATE_SIG; 1496 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1497 } 1498 1499 static int 1500 vesa_load_state(video_adapter_t *adp, void *p) 1501 { 1502 void *buf; 1503 size_t bsize; 1504 int error, mode; 1505 1506 if (adp != vesa_adp) 1507 return ((*prevvidsw->load_state)(adp, p)); 1508 1509 /* Try BIOS POST to restore a sane state. */ 1510 (void)vesa_bios_post(); 1511 bsize = adp->va_buffer_size; 1512 mode = adp->va_mode; 1513 error = vesa_set_mode(adp, adp->va_initial_mode); 1514 if (mode != adp->va_initial_mode) 1515 error = vesa_set_mode(adp, mode); 1516 1517 if (vesa_vmem_buf != NULL) { 1518 if (error == 0 && VESA_MODE(mode)) { 1519 buf = (void *)adp->va_buffer; 1520 if (buf != NULL) 1521 bcopy(vesa_vmem_buf, buf, bsize); 1522 } 1523 free(vesa_vmem_buf, M_DEVBUF); 1524 vesa_vmem_buf = NULL; 1525 } 1526 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1527 return ((*prevvidsw->load_state)(adp, p)); 1528 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1529 } 1530 1531 #if 0 1532 static int 1533 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1534 { 1535 x86regs_t regs; 1536 1537 x86bios_init_regs(®s); 1538 regs.R_AX = 0x4f05; 1539 regs.R_BL = 0x10; 1540 1541 x86bios_intr(®s, 0x10); 1542 1543 if (regs.R_AX != 0x004f) 1544 return (1); 1545 *offset = regs.DX * adp->va_window_gran; 1546 1547 return (0); 1548 } 1549 #endif 1550 1551 static int 1552 vesa_set_origin(video_adapter_t *adp, off_t offset) 1553 { 1554 x86regs_t regs; 1555 1556 /* 1557 * This function should return as quickly as possible to 1558 * maintain good performance of the system. For this reason, 1559 * error checking is kept minimal and let the VESA BIOS to 1560 * detect error. 1561 */ 1562 if (adp != vesa_adp) 1563 return ((*prevvidsw->set_win_org)(adp, offset)); 1564 1565 /* if this is a linear frame buffer, do nothing */ 1566 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1567 return (0); 1568 /* XXX */ 1569 if (adp->va_window_gran == 0) 1570 return (1); 1571 1572 x86bios_init_regs(®s); 1573 regs.R_AX = 0x4f05; 1574 regs.R_DX = offset / adp->va_window_gran; 1575 1576 x86bios_intr(®s, 0x10); 1577 1578 if (regs.R_AX != 0x004f) 1579 return (1); 1580 1581 x86bios_init_regs(®s); 1582 regs.R_AX = 0x4f05; 1583 regs.R_BL = 1; 1584 regs.R_DX = offset / adp->va_window_gran; 1585 x86bios_intr(®s, 0x10); 1586 1587 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1588 return (0); /* XXX */ 1589 } 1590 1591 static int 1592 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1593 { 1594 1595 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1596 } 1597 1598 static int 1599 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1600 { 1601 1602 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1603 } 1604 1605 static int 1606 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1607 int celsize, int blink) 1608 { 1609 1610 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1611 blink)); 1612 } 1613 1614 static int 1615 vesa_blank_display(video_adapter_t *adp, int mode) 1616 { 1617 1618 /* XXX: use VESA DPMS */ 1619 return ((*prevvidsw->blank_display)(adp, mode)); 1620 } 1621 1622 static int 1623 vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1624 int prot, vm_memattr_t *memattr) 1625 { 1626 1627 #if VESA_DEBUG > 0 1628 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1629 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1630 #endif 1631 1632 if ((adp == vesa_adp) && 1633 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1634 /* va_window_size == va_buffer_size/vi_planes */ 1635 /* XXX: is this correct? */ 1636 if (offset > adp->va_window_size - PAGE_SIZE) 1637 return (-1); 1638 *paddr = adp->va_info.vi_buffer + offset; 1639 #ifdef VM_MEMATTR_WRITE_COMBINING 1640 *memattr = VM_MEMATTR_WRITE_COMBINING; 1641 #endif 1642 return (0); 1643 } 1644 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1645 } 1646 1647 static int 1648 vesa_clear(video_adapter_t *adp) 1649 { 1650 1651 return ((*prevvidsw->clear)(adp)); 1652 } 1653 1654 static int 1655 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1656 { 1657 1658 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1659 } 1660 1661 static int 1662 vesa_bitblt(video_adapter_t *adp,...) 1663 { 1664 1665 /* FIXME */ 1666 return (1); 1667 } 1668 1669 static int 1670 get_palette(video_adapter_t *adp, int base, int count, 1671 u_char *red, u_char *green, u_char *blue, u_char *trans) 1672 { 1673 u_char *r; 1674 u_char *g; 1675 u_char *b; 1676 int bits; 1677 int error; 1678 1679 if (base < 0 || base >= 256 || count < 0 || count > 256) 1680 return (1); 1681 if ((base + count) > 256) 1682 return (1); 1683 if (!VESA_MODE(adp->va_mode)) 1684 return (1); 1685 1686 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1687 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1688 g = r + count; 1689 b = g + count; 1690 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1691 if (error == 0) { 1692 copyout(r, red, count); 1693 copyout(g, green, count); 1694 copyout(b, blue, count); 1695 if (trans != NULL) { 1696 bzero(r, count); 1697 copyout(r, trans, count); 1698 } 1699 } 1700 free(r, M_DEVBUF); 1701 1702 return (error); 1703 } 1704 1705 static int 1706 set_palette(video_adapter_t *adp, int base, int count, 1707 u_char *red, u_char *green, u_char *blue, u_char *trans) 1708 { 1709 u_char *r; 1710 u_char *g; 1711 u_char *b; 1712 int bits; 1713 int error; 1714 1715 if (base < 0 || base >= 256 || count < 0 || count > 256) 1716 return (1); 1717 if ((base + count) > 256) 1718 return (1); 1719 if (!VESA_MODE(adp->va_mode)) 1720 return (1); 1721 1722 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1723 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1724 g = r + count; 1725 b = g + count; 1726 copyin(red, r, count); 1727 copyin(green, g, count); 1728 copyin(blue, b, count); 1729 1730 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1731 free(r, M_DEVBUF); 1732 1733 return (error); 1734 } 1735 1736 static int 1737 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1738 { 1739 int bytes; 1740 1741 if (adp != vesa_adp) 1742 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1743 1744 switch (cmd) { 1745 case FBIO_SETWINORG: /* set frame buffer window origin */ 1746 if (!VESA_MODE(adp->va_mode)) 1747 return (*prevvidsw->ioctl)(adp, cmd, arg); 1748 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1749 1750 case FBIO_SETDISPSTART: /* set display start address */ 1751 if (!VESA_MODE(adp->va_mode)) 1752 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1753 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1754 ((video_display_start_t *)arg)->y)) 1755 return (ENODEV); 1756 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1757 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1758 return (0); 1759 1760 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1761 if (!VESA_MODE(adp->va_mode)) 1762 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1763 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1764 return (ENODEV); 1765 adp->va_line_width = bytes; 1766 #if VESA_DEBUG > 1 1767 printf("new line width:%d\n", adp->va_line_width); 1768 #endif 1769 return (0); 1770 1771 case FBIO_GETPALETTE: /* get color palette */ 1772 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1773 ((video_color_palette_t *)arg)->count, 1774 ((video_color_palette_t *)arg)->red, 1775 ((video_color_palette_t *)arg)->green, 1776 ((video_color_palette_t *)arg)->blue, 1777 ((video_color_palette_t *)arg)->transparent)) 1778 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1779 return (0); 1780 1781 1782 case FBIO_SETPALETTE: /* set color palette */ 1783 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1784 ((video_color_palette_t *)arg)->count, 1785 ((video_color_palette_t *)arg)->red, 1786 ((video_color_palette_t *)arg)->green, 1787 ((video_color_palette_t *)arg)->blue, 1788 ((video_color_palette_t *)arg)->transparent)) 1789 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1790 return (0); 1791 1792 case FBIOGETCMAP: /* get color palette */ 1793 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1794 ((struct fbcmap *)arg)->count, 1795 ((struct fbcmap *)arg)->red, 1796 ((struct fbcmap *)arg)->green, 1797 ((struct fbcmap *)arg)->blue, NULL)) 1798 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1799 return (0); 1800 1801 case FBIOPUTCMAP: /* set color palette */ 1802 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1803 ((struct fbcmap *)arg)->count, 1804 ((struct fbcmap *)arg)->red, 1805 ((struct fbcmap *)arg)->green, 1806 ((struct fbcmap *)arg)->blue, NULL)) 1807 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1808 return (0); 1809 1810 default: 1811 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1812 } 1813 } 1814 1815 static int 1816 vesa_diag(video_adapter_t *adp, int level) 1817 { 1818 int error; 1819 1820 /* call the previous handler first */ 1821 error = (*prevvidsw->diag)(adp, level); 1822 if (error) 1823 return (error); 1824 1825 if (adp != vesa_adp) 1826 return (1); 1827 1828 if (level <= 0) 1829 return (0); 1830 1831 return (0); 1832 } 1833 1834 static int 1835 vesa_bios_info(int level) 1836 { 1837 #if VESA_DEBUG > 1 1838 struct vesa_mode vmode; 1839 int i; 1840 #endif 1841 uint16_t vers; 1842 1843 vers = vesa_adp_info->v_version; 1844 1845 if (bootverbose) { 1846 /* general adapter information */ 1847 printf( 1848 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1849 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1850 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1851 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1852 vesa_vmodetab, vesa_adp_info->v_modetable); 1853 1854 /* OEM string */ 1855 if (vesa_oemstr != NULL) 1856 printf("VESA: %s\n", vesa_oemstr); 1857 } 1858 1859 if (level <= 0) 1860 return (0); 1861 1862 if (vers >= 0x0200 && bootverbose) { 1863 /* vender name, product name, product revision */ 1864 printf("VESA: %s %s %s\n", 1865 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1866 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1867 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1868 } 1869 1870 #if VESA_DEBUG > 1 1871 /* mode information */ 1872 for (i = 0; 1873 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1874 && (vesa_vmodetab[i] != 0xffff); ++i) { 1875 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1876 continue; 1877 1878 /* print something for diagnostic purpose */ 1879 printf("VESA: mode:0x%03x, flags:0x%04x", 1880 vesa_vmodetab[i], vmode.v_modeattr); 1881 if (vmode.v_modeattr & V_MODEOPTINFO) { 1882 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1883 printf(", G %dx%dx%d %d, ", 1884 vmode.v_width, vmode.v_height, 1885 vmode.v_bpp, vmode.v_planes); 1886 } else { 1887 printf(", T %dx%d, ", 1888 vmode.v_width, vmode.v_height); 1889 } 1890 printf("font:%dx%d, ", 1891 vmode.v_cwidth, vmode.v_cheight); 1892 printf("pages:%d, mem:%d", 1893 vmode.v_ipages + 1, vmode.v_memmodel); 1894 } 1895 if (vmode.v_modeattr & V_MODELFB) { 1896 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1897 vmode.v_lfb, vmode.v_offscreen, 1898 vmode.v_offscreensize*1024); 1899 } 1900 printf("\n"); 1901 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1902 vmode.v_waseg, vmode.v_waattr, 1903 vmode.v_wbseg, vmode.v_wbattr); 1904 printf("size:%dk, gran:%dk\n", 1905 vmode.v_wsize, vmode.v_wgran); 1906 } 1907 #endif /* VESA_DEBUG > 1 */ 1908 1909 return (0); 1910 } 1911 1912 /* module loading */ 1913 1914 static int 1915 vesa_load(void) 1916 { 1917 int error; 1918 1919 if (vesa_init_done) 1920 return (0); 1921 1922 /* locate a VGA adapter */ 1923 vesa_adp = NULL; 1924 error = vesa_configure(0); 1925 1926 if (error == 0) 1927 vesa_bios_info(bootverbose); 1928 1929 return (error); 1930 } 1931 1932 static int 1933 vesa_unload(void) 1934 { 1935 u_char palette[256*3]; 1936 int error; 1937 1938 /* if the adapter is currently in a VESA mode, don't unload */ 1939 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1940 return (EBUSY); 1941 /* 1942 * FIXME: if there is at least one vty which is in a VESA mode, 1943 * we shouldn't be unloading! XXX 1944 */ 1945 1946 if ((error = vesa_unload_ioctl()) == 0) { 1947 if (vesa_adp != NULL) { 1948 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1949 vesa_bios_save_palette(0, 256, palette, 8); 1950 vesa_bios_set_dac(6); 1951 vesa_adp->va_flags &= ~V_ADP_DAC8; 1952 vesa_bios_load_palette(0, 256, palette, 6); 1953 } 1954 vesa_adp->va_flags &= ~V_ADP_VESA; 1955 vidsw[vesa_adp->va_index] = prevvidsw; 1956 } 1957 } 1958 1959 vesa_bios_uninit(); 1960 1961 return (error); 1962 } 1963 1964 static int 1965 vesa_mod_event(module_t mod, int type, void *data) 1966 { 1967 1968 switch (type) { 1969 case MOD_LOAD: 1970 return (vesa_load()); 1971 case MOD_UNLOAD: 1972 return (vesa_unload()); 1973 } 1974 return (EOPNOTSUPP); 1975 } 1976 1977 static moduledata_t vesa_mod = { 1978 "vesa", 1979 vesa_mod_event, 1980 NULL, 1981 }; 1982 1983 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1984 MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1985 1986 #endif /* VGA_NO_MODE_CHANGE */
Cache object: c6b1c199cd35b8d683d4c721b102bdbb
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]