1 /*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * Copyright (c) 2009-2012 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 83 static int vesa_state; 84 static void *vesa_state_buf; 85 static uint32_t vesa_state_buf_offs; 86 static ssize_t vesa_state_buf_size; 87 88 static u_char *vesa_palette; 89 static uint32_t vesa_palette_offs; 90 91 static void *vesa_vmem_buf; 92 93 static void *vesa_bios; 94 static uint32_t vesa_bios_offs; 95 static uint32_t vesa_bios_int10; 96 static size_t vesa_bios_size; 97 98 /* VESA video adapter */ 99 static video_adapter_t *vesa_adp; 100 101 static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging"); 102 static int vesa_shadow_rom; 103 TUNABLE_INT("debug.vesa.shadow_rom", &vesa_shadow_rom); 104 SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 105 0, "Enable video BIOS shadow"); 106 107 /* VESA functions */ 108 #if 0 109 static int vesa_nop(void); 110 #endif 111 static int vesa_error(void); 112 static vi_probe_t vesa_probe; 113 static vi_init_t vesa_init; 114 static vi_get_info_t vesa_get_info; 115 static vi_query_mode_t vesa_query_mode; 116 static vi_set_mode_t vesa_set_mode; 117 static vi_save_font_t vesa_save_font; 118 static vi_load_font_t vesa_load_font; 119 static vi_show_font_t vesa_show_font; 120 static vi_save_palette_t vesa_save_palette; 121 static vi_load_palette_t vesa_load_palette; 122 static vi_set_border_t vesa_set_border; 123 static vi_save_state_t vesa_save_state; 124 static vi_load_state_t vesa_load_state; 125 static vi_set_win_org_t vesa_set_origin; 126 static vi_read_hw_cursor_t vesa_read_hw_cursor; 127 static vi_set_hw_cursor_t vesa_set_hw_cursor; 128 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 129 static vi_blank_display_t vesa_blank_display; 130 static vi_mmap_t vesa_mmap; 131 static vi_ioctl_t vesa_ioctl; 132 static vi_clear_t vesa_clear; 133 static vi_fill_rect_t vesa_fill_rect; 134 static vi_bitblt_t vesa_bitblt; 135 static vi_diag_t vesa_diag; 136 static int vesa_bios_info(int level); 137 138 static video_switch_t vesavidsw = { 139 vesa_probe, 140 vesa_init, 141 vesa_get_info, 142 vesa_query_mode, 143 vesa_set_mode, 144 vesa_save_font, 145 vesa_load_font, 146 vesa_show_font, 147 vesa_save_palette, 148 vesa_load_palette, 149 vesa_set_border, 150 vesa_save_state, 151 vesa_load_state, 152 vesa_set_origin, 153 vesa_read_hw_cursor, 154 vesa_set_hw_cursor, 155 vesa_set_hw_cursor_shape, 156 vesa_blank_display, 157 vesa_mmap, 158 vesa_ioctl, 159 vesa_clear, 160 vesa_fill_rect, 161 vesa_bitblt, 162 vesa_error, 163 vesa_error, 164 vesa_diag, 165 }; 166 167 static video_switch_t *prevvidsw; 168 169 /* VESA BIOS video modes */ 170 #define VESA_MAXMODES 64 171 #define EOT (-1) 172 #define NA (-2) 173 174 #define MODE_TABLE_DELTA 8 175 176 static int vesa_vmode_max; 177 static video_info_t *vesa_vmode; 178 179 static int vesa_init_done; 180 static struct vesa_info *vesa_adp_info; 181 static u_int16_t *vesa_vmodetab; 182 static char *vesa_oemstr; 183 static char *vesa_venderstr; 184 static char *vesa_prodstr; 185 static char *vesa_revstr; 186 187 /* local macros and functions */ 188 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 189 190 static int int10_set_mode(int mode); 191 static int vesa_bios_post(void); 192 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 193 static int vesa_bios_set_mode(int mode); 194 #if 0 195 static int vesa_bios_get_dac(void); 196 #endif 197 static int vesa_bios_set_dac(int bits); 198 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 199 int bits); 200 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 201 u_char *b, int bits); 202 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 203 int bits); 204 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 205 u_char *b, int bits); 206 #define STATE_SIZE 0 207 #define STATE_SAVE 1 208 #define STATE_LOAD 2 209 static ssize_t vesa_bios_state_buf_size(int); 210 static int vesa_bios_save_restore(int code, void *p); 211 #ifdef MODE_TABLE_BROKEN 212 static int vesa_bios_get_line_length(void); 213 #endif 214 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 215 #if 0 216 static int vesa_bios_get_start(int *x, int *y); 217 #endif 218 static int vesa_bios_set_start(int x, int y); 219 static int vesa_map_gen_mode_num(int type, int color, int mode); 220 static int vesa_translate_flags(u_int16_t vflags); 221 static int vesa_translate_mmodel(u_int8_t vmodel); 222 static int vesa_get_bpscanline(struct vesa_mode *vmode); 223 static int vesa_bios_init(void); 224 static void vesa_bios_uninit(void); 225 static void vesa_clear_modes(video_info_t *info, int color); 226 227 #if 0 228 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 229 #endif 230 231 /* INT 10 BIOS calls */ 232 static int 233 int10_set_mode(int mode) 234 { 235 x86regs_t regs; 236 237 x86bios_init_regs(®s); 238 regs.R_AL = mode; 239 240 x86bios_intr(®s, 0x10); 241 242 return (0); 243 } 244 245 static int 246 vesa_bios_post(void) 247 { 248 x86regs_t regs; 249 devclass_t dc; 250 device_t *devs; 251 device_t dev; 252 int count, i, is_pci; 253 254 if (x86bios_get_orm(vesa_bios_offs) == NULL) 255 return (1); 256 257 dev = NULL; 258 is_pci = 0; 259 260 /* Find the matching PCI video controller. */ 261 dc = devclass_find("vgapci"); 262 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 263 for (i = 0; i < count; i++) 264 if (device_get_flags(devs[i]) != 0 && 265 x86bios_match_device(vesa_bios_offs, devs[i])) { 266 dev = devs[i]; 267 is_pci = 1; 268 break; 269 } 270 free(devs, M_TEMP); 271 } 272 273 /* Try VGA if a PCI device is not found. */ 274 if (dev == NULL) { 275 dc = devclass_find(VGA_DRIVER_NAME); 276 if (dc != NULL) 277 dev = devclass_get_device(dc, 0); 278 } 279 280 if (bootverbose) 281 printf("%s: calling BIOS POST\n", 282 dev == NULL ? "VESA" : device_get_nameunit(dev)); 283 284 x86bios_init_regs(®s); 285 if (is_pci) { 286 regs.R_AH = pci_get_bus(dev); 287 regs.R_AL = (pci_get_slot(dev) << 3) | 288 (pci_get_function(dev) & 0x07); 289 } 290 regs.R_DL = 0x80; 291 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 292 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 293 294 if (x86bios_get_intr(0x10) == 0) 295 return (1); 296 297 return (0); 298 } 299 300 /* VESA BIOS calls */ 301 static int 302 vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 303 { 304 x86regs_t regs; 305 uint32_t offs; 306 void *buf; 307 308 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 309 if (buf == NULL) 310 return (1); 311 312 x86bios_init_regs(®s); 313 regs.R_AX = 0x4f01; 314 regs.R_CX = mode; 315 316 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 317 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 318 319 x86bios_intr(®s, 0x10); 320 321 if (regs.R_AX != 0x004f) { 322 x86bios_free(buf, sizeof(*vmode)); 323 return (1); 324 } 325 326 bcopy(buf, vmode, sizeof(*vmode)); 327 x86bios_free(buf, sizeof(*vmode)); 328 329 return (0); 330 } 331 332 static int 333 vesa_bios_set_mode(int mode) 334 { 335 x86regs_t regs; 336 337 x86bios_init_regs(®s); 338 regs.R_AX = 0x4f02; 339 regs.R_BX = mode; 340 341 x86bios_intr(®s, 0x10); 342 343 return (regs.R_AX != 0x004f); 344 } 345 346 #if 0 347 static int 348 vesa_bios_get_dac(void) 349 { 350 x86regs_t regs; 351 352 x86bios_init_regs(®s); 353 regs.R_AX = 0x4f08; 354 regs.R_BL = 1; 355 356 x86bios_intr(®s, 0x10); 357 358 if (regs.R_AX != 0x004f) 359 return (6); 360 361 return (regs.R_BH); 362 } 363 #endif 364 365 static int 366 vesa_bios_set_dac(int bits) 367 { 368 x86regs_t regs; 369 370 x86bios_init_regs(®s); 371 regs.R_AX = 0x4f08; 372 /* regs.R_BL = 0; */ 373 regs.R_BH = bits; 374 375 x86bios_intr(®s, 0x10); 376 377 if (regs.R_AX != 0x004f) 378 return (6); 379 380 return (regs.R_BH); 381 } 382 383 static int 384 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 385 { 386 x86regs_t regs; 387 int i; 388 389 x86bios_init_regs(®s); 390 regs.R_AX = 0x4f09; 391 regs.R_BL = 1; 392 regs.R_CX = colors; 393 regs.R_DX = start; 394 395 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 396 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 397 398 bits = 8 - bits; 399 mtx_lock(&vesa_lock); 400 x86bios_intr(®s, 0x10); 401 if (regs.R_AX != 0x004f) { 402 mtx_unlock(&vesa_lock); 403 return (1); 404 } 405 for (i = 0; i < colors; ++i) { 406 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 407 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 408 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 409 } 410 mtx_unlock(&vesa_lock); 411 412 return (0); 413 } 414 415 static int 416 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 417 int bits) 418 { 419 x86regs_t regs; 420 int i; 421 422 x86bios_init_regs(®s); 423 regs.R_AX = 0x4f09; 424 regs.R_BL = 1; 425 regs.R_CX = colors; 426 regs.R_DX = start; 427 428 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 429 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 430 431 bits = 8 - bits; 432 mtx_lock(&vesa_lock); 433 x86bios_intr(®s, 0x10); 434 if (regs.R_AX != 0x004f) { 435 mtx_unlock(&vesa_lock); 436 return (1); 437 } 438 for (i = 0; i < colors; ++i) { 439 r[i] = vesa_palette[i * 4 + 2] << bits; 440 g[i] = vesa_palette[i * 4 + 1] << bits; 441 b[i] = vesa_palette[i * 4] << bits; 442 } 443 mtx_unlock(&vesa_lock); 444 445 return (0); 446 } 447 448 static int 449 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 450 { 451 x86regs_t regs; 452 int i; 453 454 x86bios_init_regs(®s); 455 regs.R_AX = 0x4f09; 456 /* regs.R_BL = 0; */ 457 regs.R_CX = colors; 458 regs.R_DX = start; 459 460 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 461 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 462 463 bits = 8 - bits; 464 mtx_lock(&vesa_lock); 465 for (i = 0; i < colors; ++i) { 466 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 467 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 468 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 469 vesa_palette[i * 4 + 3] = 0; 470 } 471 x86bios_intr(®s, 0x10); 472 mtx_unlock(&vesa_lock); 473 474 return (regs.R_AX != 0x004f); 475 } 476 477 static int 478 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 479 int bits) 480 { 481 x86regs_t regs; 482 int i; 483 484 x86bios_init_regs(®s); 485 regs.R_AX = 0x4f09; 486 /* regs.R_BL = 0; */ 487 regs.R_CX = colors; 488 regs.R_DX = start; 489 490 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 491 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 492 493 bits = 8 - bits; 494 mtx_lock(&vesa_lock); 495 for (i = 0; i < colors; ++i) { 496 vesa_palette[i * 4] = b[i] >> bits; 497 vesa_palette[i * 4 + 1] = g[i] >> bits; 498 vesa_palette[i * 4 + 2] = r[i] >> bits; 499 vesa_palette[i * 4 + 3] = 0; 500 } 501 x86bios_intr(®s, 0x10); 502 mtx_unlock(&vesa_lock); 503 504 return (regs.R_AX != 0x004f); 505 } 506 507 static ssize_t 508 vesa_bios_state_buf_size(int state) 509 { 510 x86regs_t regs; 511 512 x86bios_init_regs(®s); 513 regs.R_AX = 0x4f04; 514 /* regs.R_DL = STATE_SIZE; */ 515 regs.R_CX = state; 516 517 x86bios_intr(®s, 0x10); 518 519 if (regs.R_AX != 0x004f) 520 return (0); 521 522 return (regs.R_BX * 64); 523 } 524 525 static int 526 vesa_bios_save_restore(int code, void *p) 527 { 528 x86regs_t regs; 529 530 if (code != STATE_SAVE && code != STATE_LOAD) 531 return (1); 532 533 x86bios_init_regs(®s); 534 regs.R_AX = 0x4f04; 535 regs.R_DL = code; 536 regs.R_CX = vesa_state; 537 538 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 539 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 540 541 mtx_lock(&vesa_lock); 542 switch (code) { 543 case STATE_SAVE: 544 x86bios_intr(®s, 0x10); 545 if (regs.R_AX == 0x004f) 546 bcopy(vesa_state_buf, p, vesa_state_buf_size); 547 break; 548 case STATE_LOAD: 549 bcopy(p, vesa_state_buf, vesa_state_buf_size); 550 x86bios_intr(®s, 0x10); 551 break; 552 } 553 mtx_unlock(&vesa_lock); 554 555 return (regs.R_AX != 0x004f); 556 } 557 558 #ifdef MODE_TABLE_BROKEN 559 static int 560 vesa_bios_get_line_length(void) 561 { 562 x86regs_t regs; 563 564 x86bios_init_regs(®s); 565 regs.R_AX = 0x4f06; 566 regs.R_BL = 1; 567 568 x86bios_intr(®s, 0x10); 569 570 if (regs.R_AX != 0x004f) 571 return (-1); 572 573 return (regs.R_BX); 574 } 575 #endif 576 577 static int 578 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 579 { 580 x86regs_t regs; 581 582 x86bios_init_regs(®s); 583 regs.R_AX = 0x4f06; 584 /* regs.R_BL = 0; */ 585 regs.R_CX = pixel; 586 587 x86bios_intr(®s, 0x10); 588 589 #if VESA_DEBUG > 1 590 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 591 #endif 592 if (regs.R_AX != 0x004f) 593 return (-1); 594 595 if (bytes != NULL) 596 *bytes = regs.R_BX; 597 if (lines != NULL) 598 *lines = regs.R_DX; 599 600 return (0); 601 } 602 603 #if 0 604 static int 605 vesa_bios_get_start(int *x, int *y) 606 { 607 x86regs_t regs; 608 609 x86bios_init_regs(®s); 610 regs.R_AX = 0x4f07; 611 regs.R_BL = 1; 612 613 x86bios_intr(®s, 0x10); 614 615 if (regs.R_AX != 0x004f) 616 return (-1); 617 618 *x = regs.R_CX; 619 *y = regs.R_DX; 620 621 return (0); 622 } 623 #endif 624 625 static int 626 vesa_bios_set_start(int x, int y) 627 { 628 x86regs_t regs; 629 630 x86bios_init_regs(®s); 631 regs.R_AX = 0x4f07; 632 regs.R_BL = 0x80; 633 regs.R_CX = x; 634 regs.R_DX = y; 635 636 x86bios_intr(®s, 0x10); 637 638 return (regs.R_AX != 0x004f); 639 } 640 641 /* map a generic video mode to a known mode */ 642 static int 643 vesa_map_gen_mode_num(int type, int color, int mode) 644 { 645 static struct { 646 int from; 647 int to; 648 } mode_map[] = { 649 { M_TEXT_132x25, M_VESA_C132x25 }, 650 { M_TEXT_132x43, M_VESA_C132x43 }, 651 { M_TEXT_132x50, M_VESA_C132x50 }, 652 { M_TEXT_132x60, M_VESA_C132x60 }, 653 }; 654 int i; 655 656 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 657 if (mode_map[i].from == mode) 658 return (mode_map[i].to); 659 } 660 return (mode); 661 } 662 663 static int 664 vesa_translate_flags(u_int16_t vflags) 665 { 666 static struct { 667 u_int16_t mask; 668 int set; 669 int reset; 670 } ftable[] = { 671 { V_MODECOLOR, V_INFO_COLOR, 0 }, 672 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 673 { V_MODELFB, V_INFO_LINEAR, 0 }, 674 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 675 }; 676 int flags; 677 int i; 678 679 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 680 flags |= (vflags & ftable[i].mask) ? 681 ftable[i].set : ftable[i].reset; 682 } 683 return (flags); 684 } 685 686 static int 687 vesa_translate_mmodel(u_int8_t vmodel) 688 { 689 static struct { 690 u_int8_t vmodel; 691 int mmodel; 692 } mtable[] = { 693 { V_MMTEXT, V_INFO_MM_TEXT }, 694 { V_MMCGA, V_INFO_MM_CGA }, 695 { V_MMHGC, V_INFO_MM_HGC }, 696 { V_MMEGA, V_INFO_MM_PLANAR }, 697 { V_MMPACKED, V_INFO_MM_PACKED }, 698 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 699 }; 700 int i; 701 702 for (i = 0; mtable[i].mmodel >= 0; ++i) { 703 if (mtable[i].vmodel == vmodel) 704 return (mtable[i].mmodel); 705 } 706 return (V_INFO_MM_OTHER); 707 } 708 709 static int 710 vesa_get_bpscanline(struct vesa_mode *vmode) 711 { 712 int bpsl; 713 714 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 715 /* Find the minimum length. */ 716 switch (vmode->v_bpp / vmode->v_planes) { 717 case 1: 718 bpsl = vmode->v_width / 8; 719 break; 720 case 2: 721 bpsl = vmode->v_width / 4; 722 break; 723 case 4: 724 bpsl = vmode->v_width / 2; 725 break; 726 default: 727 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 728 bpsl /= vmode->v_planes; 729 break; 730 } 731 732 /* Use VBE 3.0 information if it looks sane. */ 733 if ((vmode->v_modeattr & V_MODELFB) != 0 && 734 vesa_adp_info->v_version >= 0x0300 && 735 vmode->v_linbpscanline > bpsl) 736 return (vmode->v_linbpscanline); 737 738 /* Return the minimum if the mode table looks absurd. */ 739 if (vmode->v_bpscanline < bpsl) 740 return (bpsl); 741 } 742 743 return (vmode->v_bpscanline); 744 } 745 746 #define VESA_MAXSTR 256 747 748 #define VESA_STRCPY(dst, src) do { \ 749 char *str; \ 750 int i; \ 751 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 752 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 753 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 754 dst[i] = str[i]; \ 755 dst[i] = '\0'; \ 756 } while (0) 757 758 static int 759 vesa_bios_init(void) 760 { 761 struct vesa_mode vmode; 762 struct vesa_info *buf; 763 video_info_t *p; 764 x86regs_t regs; 765 size_t bsize; 766 size_t msize; 767 void *vmbuf; 768 uint8_t *vbios; 769 uint32_t offs; 770 uint16_t vers; 771 int is_via_cle266; 772 int modes; 773 int i; 774 775 if (vesa_init_done) 776 return (0); 777 778 vesa_bios_offs = VESA_BIOS_OFFSET; 779 780 /* 781 * If the VBE real mode interrupt vector is not found, try BIOS POST. 782 */ 783 vesa_bios_int10 = x86bios_get_intr(0x10); 784 if (vesa_bios_int10 == 0) { 785 if (vesa_bios_post() != 0) 786 return (1); 787 vesa_bios_int10 = x86bios_get_intr(0x10); 788 if (vesa_bios_int10 == 0) 789 return (1); 790 } 791 792 /* 793 * Shadow video ROM. 794 */ 795 offs = vesa_bios_int10; 796 if (vesa_shadow_rom) { 797 vbios = x86bios_get_orm(vesa_bios_offs); 798 if (vbios != NULL) { 799 vesa_bios_size = vbios[2] * 512; 800 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 801 (vesa_bios_int10 & 0xffff0000) && 802 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 803 vesa_bios = x86bios_alloc(&vesa_bios_offs, 804 vesa_bios_size, M_WAITOK); 805 bcopy(vbios, vesa_bios, vesa_bios_size); 806 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 807 (vesa_bios_int10 & 0xffff); 808 x86bios_set_intr(0x10, offs); 809 } 810 } 811 if (vesa_bios == NULL) 812 printf("VESA: failed to shadow video ROM\n"); 813 } 814 if (bootverbose) 815 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 816 (offs >> 16) & 0xffff, offs & 0xffff); 817 818 x86bios_init_regs(®s); 819 regs.R_AX = 0x4f00; 820 821 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 822 823 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 824 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 825 826 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 827 x86bios_intr(®s, 0x10); 828 829 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 830 goto fail; 831 832 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 833 bcopy(vmbuf, buf, sizeof(*buf)); 834 835 if (bootverbose) { 836 printf("VESA: information block\n"); 837 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 838 } 839 840 vers = buf->v_version = le16toh(buf->v_version); 841 buf->v_oemstr = le32toh(buf->v_oemstr); 842 buf->v_flags = le32toh(buf->v_flags); 843 buf->v_modetable = le32toh(buf->v_modetable); 844 buf->v_memsize = le16toh(buf->v_memsize); 845 buf->v_revision = le16toh(buf->v_revision); 846 buf->v_venderstr = le32toh(buf->v_venderstr); 847 buf->v_prodstr = le32toh(buf->v_prodstr); 848 buf->v_revstr = le32toh(buf->v_revstr); 849 850 if (vers < 0x0102) { 851 printf("VESA: VBE version %d.%d is not supported; " 852 "version 1.2 or later is required.\n", 853 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 854 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 855 goto fail; 856 } 857 858 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 859 if (vers >= 0x0200) { 860 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 861 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 862 VESA_STRCPY(vesa_revstr, buf->v_revstr); 863 } 864 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 865 sizeof(VESA_VIA_CLE266)) == 0; 866 867 if (buf->v_modetable == 0) 868 goto fail; 869 870 msize = (size_t)buf->v_memsize * 64 * 1024; 871 872 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 873 874 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 875 (vesa_vmodetab[i] != 0xffff); ++i) { 876 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 877 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 878 continue; 879 880 vmode.v_modeattr = le16toh(vmode.v_modeattr); 881 vmode.v_wgran = le16toh(vmode.v_wgran); 882 vmode.v_wsize = le16toh(vmode.v_wsize); 883 vmode.v_waseg = le16toh(vmode.v_waseg); 884 vmode.v_wbseg = le16toh(vmode.v_wbseg); 885 vmode.v_posfunc = le32toh(vmode.v_posfunc); 886 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 887 vmode.v_width = le16toh(vmode.v_width); 888 vmode.v_height = le16toh(vmode.v_height); 889 vmode.v_lfb = le32toh(vmode.v_lfb); 890 vmode.v_offscreen = le32toh(vmode.v_offscreen); 891 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 892 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 893 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 894 895 /* reject unsupported modes */ 896 #if 0 897 if ((vmode.v_modeattr & 898 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 899 (V_MODESUPP | V_MODEOPTINFO)) 900 continue; 901 #else 902 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 903 #if VESA_DEBUG > 1 904 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 905 " attr = %x\n", 906 vmode.v_modeattr & V_MODEGRAPHICS ? 907 "graphics" : "text", 908 vmode.v_width, vmode.v_height, vmode.v_bpp, 909 vmode.v_modeattr); 910 #endif 911 continue; 912 } 913 #endif 914 915 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 916 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 917 bsize *= vmode.v_planes; 918 919 /* Does it have enough memory to support this mode? */ 920 if (msize < bsize) { 921 #if VESA_DEBUG > 1 922 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 923 " attr = %x, not enough memory\n", 924 vmode.v_modeattr & V_MODEGRAPHICS ? 925 "graphics" : "text", 926 vmode.v_width, vmode.v_height, vmode.v_bpp, 927 vmode.v_modeattr); 928 #endif 929 continue; 930 } 931 932 /* expand the array if necessary */ 933 if (modes >= vesa_vmode_max) { 934 vesa_vmode_max += MODE_TABLE_DELTA; 935 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 936 M_DEVBUF, M_WAITOK); 937 #if VESA_DEBUG > 1 938 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 939 modes, vesa_vmode_max); 940 #endif 941 if (modes > 0) { 942 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 943 free(vesa_vmode, M_DEVBUF); 944 } 945 vesa_vmode = p; 946 } 947 948 #if VESA_DEBUG > 1 949 printf("Found VESA %s mode: %d x %d x %d bpp\n", 950 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 951 vmode.v_width, vmode.v_height, vmode.v_bpp); 952 #endif 953 if (is_via_cle266) { 954 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 955 vmode.v_width &= 0xff; 956 vmode.v_waseg = 0xb8000 >> 4; 957 } 958 } 959 960 /* copy some fields */ 961 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 962 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 963 vesa_vmode[modes].vi_width = vmode.v_width; 964 vesa_vmode[modes].vi_height = vmode.v_height; 965 vesa_vmode[modes].vi_depth = vmode.v_bpp; 966 vesa_vmode[modes].vi_planes = vmode.v_planes; 967 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 968 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 969 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 970 /* XXX window B */ 971 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 972 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 973 if (vmode.v_modeattr & V_MODELFB) 974 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 975 vesa_vmode[modes].vi_buffer_size = bsize; 976 vesa_vmode[modes].vi_mem_model = 977 vesa_translate_mmodel(vmode.v_memmodel); 978 switch (vesa_vmode[modes].vi_mem_model) { 979 case V_INFO_MM_DIRECT: 980 if ((vmode.v_modeattr & V_MODELFB) != 0 && 981 vers >= 0x0300) { 982 vesa_vmode[modes].vi_pixel_fields[0] = 983 vmode.v_linredfieldpos; 984 vesa_vmode[modes].vi_pixel_fields[1] = 985 vmode.v_lingreenfieldpos; 986 vesa_vmode[modes].vi_pixel_fields[2] = 987 vmode.v_linbluefieldpos; 988 vesa_vmode[modes].vi_pixel_fields[3] = 989 vmode.v_linresfieldpos; 990 vesa_vmode[modes].vi_pixel_fsizes[0] = 991 vmode.v_linredmasksize; 992 vesa_vmode[modes].vi_pixel_fsizes[1] = 993 vmode.v_lingreenmasksize; 994 vesa_vmode[modes].vi_pixel_fsizes[2] = 995 vmode.v_linbluemasksize; 996 vesa_vmode[modes].vi_pixel_fsizes[3] = 997 vmode.v_linresmasksize; 998 } else { 999 vesa_vmode[modes].vi_pixel_fields[0] = 1000 vmode.v_redfieldpos; 1001 vesa_vmode[modes].vi_pixel_fields[1] = 1002 vmode.v_greenfieldpos; 1003 vesa_vmode[modes].vi_pixel_fields[2] = 1004 vmode.v_bluefieldpos; 1005 vesa_vmode[modes].vi_pixel_fields[3] = 1006 vmode.v_resfieldpos; 1007 vesa_vmode[modes].vi_pixel_fsizes[0] = 1008 vmode.v_redmasksize; 1009 vesa_vmode[modes].vi_pixel_fsizes[1] = 1010 vmode.v_greenmasksize; 1011 vesa_vmode[modes].vi_pixel_fsizes[2] = 1012 vmode.v_bluemasksize; 1013 vesa_vmode[modes].vi_pixel_fsizes[3] = 1014 vmode.v_resmasksize; 1015 } 1016 /* FALLTHROUGH */ 1017 case V_INFO_MM_PACKED: 1018 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1019 break; 1020 } 1021 vesa_vmode[modes].vi_flags = 1022 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1023 1024 ++modes; 1025 } 1026 vesa_vmode[modes].vi_mode = EOT; 1027 1028 if (bootverbose) 1029 printf("VESA: %d mode(s) found\n", modes); 1030 1031 if (modes == 0) 1032 goto fail; 1033 1034 x86bios_free(vmbuf, sizeof(*buf)); 1035 1036 /* Probe supported save/restore states. */ 1037 for (i = 0; i < 4; i++) 1038 if (vesa_bios_state_buf_size(1 << i) > 0) 1039 vesa_state |= 1 << i; 1040 if (vesa_state != 0) 1041 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1042 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1043 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1044 if (vesa_state_buf_size > 0) { 1045 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1046 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1047 } 1048 1049 return (0); 1050 1051 fail: 1052 x86bios_free(vmbuf, sizeof(buf)); 1053 vesa_bios_uninit(); 1054 return (1); 1055 } 1056 1057 static void 1058 vesa_bios_uninit(void) 1059 { 1060 1061 if (vesa_bios != NULL) { 1062 x86bios_set_intr(0x10, vesa_bios_int10); 1063 vesa_bios_offs = VESA_BIOS_OFFSET; 1064 x86bios_free(vesa_bios, vesa_bios_size); 1065 vesa_bios = NULL; 1066 } 1067 if (vesa_adp_info != NULL) { 1068 free(vesa_adp_info, M_DEVBUF); 1069 vesa_adp_info = NULL; 1070 } 1071 if (vesa_oemstr != NULL) { 1072 free(vesa_oemstr, M_DEVBUF); 1073 vesa_oemstr = NULL; 1074 } 1075 if (vesa_venderstr != NULL) { 1076 free(vesa_venderstr, M_DEVBUF); 1077 vesa_venderstr = NULL; 1078 } 1079 if (vesa_prodstr != NULL) { 1080 free(vesa_prodstr, M_DEVBUF); 1081 vesa_prodstr = NULL; 1082 } 1083 if (vesa_revstr != NULL) { 1084 free(vesa_revstr, M_DEVBUF); 1085 vesa_revstr = NULL; 1086 } 1087 if (vesa_vmode != NULL) { 1088 free(vesa_vmode, M_DEVBUF); 1089 vesa_vmode = NULL; 1090 } 1091 if (vesa_palette != NULL) { 1092 x86bios_free(vesa_palette, 1093 VESA_PALETTE_SIZE + vesa_state_buf_size); 1094 vesa_palette = NULL; 1095 } 1096 } 1097 1098 static void 1099 vesa_clear_modes(video_info_t *info, int color) 1100 { 1101 while (info->vi_mode != EOT) { 1102 if ((info->vi_flags & V_INFO_COLOR) != color) 1103 info->vi_mode = NA; 1104 ++info; 1105 } 1106 } 1107 1108 /* entry points */ 1109 1110 static int 1111 vesa_configure(int flags) 1112 { 1113 video_adapter_t *adp; 1114 int adapters; 1115 int error; 1116 int i; 1117 1118 if (vesa_init_done) 1119 return (0); 1120 if (flags & VIO_PROBE_ONLY) 1121 return (0); 1122 1123 /* 1124 * If the VESA module has already been loaded, abort loading 1125 * the module this time. 1126 */ 1127 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1128 if (adp->va_flags & V_ADP_VESA) 1129 return (ENXIO); 1130 if (adp->va_type == KD_VGA) 1131 break; 1132 } 1133 1134 /* 1135 * The VGA adapter is not found. This is because either 1136 * 1) the VGA driver has not been initialized, or 2) the VGA card 1137 * is not present. If 1) is the case, we shall defer 1138 * initialization for now and try again later. 1139 */ 1140 if (adp == NULL) { 1141 vga_sub_configure = vesa_configure; 1142 return (ENODEV); 1143 } 1144 1145 /* count number of registered adapters */ 1146 for (++i; vid_get_adapter(i) != NULL; ++i) 1147 ; 1148 adapters = i; 1149 1150 /* call VESA BIOS */ 1151 vesa_adp = adp; 1152 if (vesa_bios_init()) { 1153 vesa_adp = NULL; 1154 return (ENXIO); 1155 } 1156 vesa_adp->va_flags |= V_ADP_VESA; 1157 1158 /* remove conflicting modes if we have more than one adapter */ 1159 if (adapters > 1) { 1160 vesa_clear_modes(vesa_vmode, 1161 (vesa_adp->va_flags & V_ADP_COLOR) ? 1162 V_INFO_COLOR : 0); 1163 } 1164 1165 if ((error = vesa_load_ioctl()) == 0) { 1166 prevvidsw = vidsw[vesa_adp->va_index]; 1167 vidsw[vesa_adp->va_index] = &vesavidsw; 1168 vesa_init_done = TRUE; 1169 } else { 1170 vesa_adp = NULL; 1171 return (error); 1172 } 1173 1174 return (0); 1175 } 1176 1177 #if 0 1178 static int 1179 vesa_nop(void) 1180 { 1181 1182 return (0); 1183 } 1184 #endif 1185 1186 static int 1187 vesa_error(void) 1188 { 1189 1190 return (1); 1191 } 1192 1193 static int 1194 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1195 { 1196 1197 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1198 } 1199 1200 static int 1201 vesa_init(int unit, video_adapter_t *adp, int flags) 1202 { 1203 1204 return ((*prevvidsw->init)(unit, adp, flags)); 1205 } 1206 1207 static int 1208 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1209 { 1210 int i; 1211 1212 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1213 return (0); 1214 1215 if (adp != vesa_adp) 1216 return (1); 1217 1218 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1219 vesa_adp->va_flags & V_ADP_COLOR, mode); 1220 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1221 if (vesa_vmode[i].vi_mode == NA) 1222 continue; 1223 if (vesa_vmode[i].vi_mode == mode) { 1224 *info = vesa_vmode[i]; 1225 return (0); 1226 } 1227 } 1228 return (1); 1229 } 1230 1231 static int 1232 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1233 { 1234 int i; 1235 1236 if ((*prevvidsw->query_mode)(adp, info) == 0) 1237 return (0); 1238 if (adp != vesa_adp) 1239 return (ENODEV); 1240 1241 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1242 if ((info->vi_width != 0) 1243 && (info->vi_width != vesa_vmode[i].vi_width)) 1244 continue; 1245 if ((info->vi_height != 0) 1246 && (info->vi_height != vesa_vmode[i].vi_height)) 1247 continue; 1248 if ((info->vi_cwidth != 0) 1249 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1250 continue; 1251 if ((info->vi_cheight != 0) 1252 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1253 continue; 1254 if ((info->vi_depth != 0) 1255 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1256 continue; 1257 if ((info->vi_planes != 0) 1258 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1259 continue; 1260 /* pixel format, memory model */ 1261 if ((info->vi_flags != 0) 1262 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1263 continue; 1264 *info = vesa_vmode[i]; 1265 return (0); 1266 } 1267 return (ENODEV); 1268 } 1269 1270 static int 1271 vesa_set_mode(video_adapter_t *adp, int mode) 1272 { 1273 video_info_t info; 1274 1275 if (adp != vesa_adp) 1276 return ((*prevvidsw->set_mode)(adp, mode)); 1277 1278 mode = vesa_map_gen_mode_num(adp->va_type, 1279 adp->va_flags & V_ADP_COLOR, mode); 1280 #if VESA_DEBUG > 0 1281 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1282 adp->va_mode, adp->va_mode, mode, mode); 1283 #endif 1284 /* 1285 * If the current mode is a VESA mode and the new mode is not, 1286 * restore the state of the adapter first by setting one of the 1287 * standard VGA mode, so that non-standard, extended SVGA registers 1288 * are set to the state compatible with the standard VGA modes. 1289 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1290 * the new mode correctly. 1291 */ 1292 if (VESA_MODE(adp->va_mode)) { 1293 if (!VESA_MODE(mode) && 1294 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1295 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1296 vesa_bios_set_dac(6); 1297 adp->va_flags &= ~V_ADP_DAC8; 1298 } 1299 int10_set_mode(adp->va_initial_bios_mode); 1300 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1301 pmap_unmapdev(adp->va_buffer, 1302 vesa_adp_info->v_memsize * 64 * 1024); 1303 /* 1304 * Once (*prevvidsw->get_info)() succeeded, 1305 * (*prevvidsw->set_mode)() below won't fail... 1306 */ 1307 } 1308 } 1309 1310 /* we may not need to handle this mode after all... */ 1311 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1312 return (0); 1313 1314 /* is the new mode supported? */ 1315 if (vesa_get_info(adp, mode, &info)) 1316 return (1); 1317 /* assert(VESA_MODE(mode)); */ 1318 1319 #if VESA_DEBUG > 0 1320 printf("VESA: about to set a VESA mode...\n"); 1321 #endif 1322 /* don't use the linear frame buffer for text modes. XXX */ 1323 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1324 info.vi_flags &= ~V_INFO_LINEAR; 1325 1326 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1327 mode |= 0x4000; 1328 if (vesa_bios_set_mode(mode | 0x8000)) 1329 return (1); 1330 1331 /* Palette format is reset by the above VBE function call. */ 1332 adp->va_flags &= ~V_ADP_DAC8; 1333 1334 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1335 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1336 vesa_bios_set_dac(8) > 6) 1337 adp->va_flags |= V_ADP_DAC8; 1338 1339 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1340 pmap_unmapdev(adp->va_buffer, 1341 vesa_adp_info->v_memsize * 64 * 1024); 1342 1343 #if VESA_DEBUG > 0 1344 printf("VESA: mode set!\n"); 1345 #endif 1346 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1347 vesa_adp->va_flags &= ~V_ADP_COLOR; 1348 vesa_adp->va_flags |= 1349 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1350 vesa_adp->va_crtc_addr = 1351 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1352 1353 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1354 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1355 vesa_adp->va_line_width /= info.vi_planes; 1356 1357 #ifdef MODE_TABLE_BROKEN 1358 /* If VBE function returns bigger bytes per scan line, use it. */ 1359 { 1360 int bpsl = vesa_bios_get_line_length(); 1361 if (bpsl > vesa_adp->va_line_width) { 1362 vesa_adp->va_line_width = bpsl; 1363 info.vi_buffer_size = bpsl * info.vi_height; 1364 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1365 info.vi_buffer_size *= info.vi_planes; 1366 } 1367 } 1368 #endif 1369 1370 if (info.vi_flags & V_INFO_LINEAR) { 1371 #if VESA_DEBUG > 1 1372 printf("VESA: setting up LFB\n"); 1373 #endif 1374 vesa_adp->va_buffer = 1375 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1376 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING); 1377 vesa_adp->va_window = vesa_adp->va_buffer; 1378 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1379 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1380 } else { 1381 vesa_adp->va_buffer = 0; 1382 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1383 vesa_adp->va_window_size = info.vi_window_size; 1384 vesa_adp->va_window_gran = info.vi_window_gran; 1385 } 1386 vesa_adp->va_buffer_size = info.vi_buffer_size; 1387 vesa_adp->va_window_orig = 0; 1388 vesa_adp->va_disp_start.x = 0; 1389 vesa_adp->va_disp_start.y = 0; 1390 #if VESA_DEBUG > 0 1391 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1392 info.vi_width, vesa_adp->va_line_width); 1393 #endif 1394 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1395 1396 /* move hardware cursor out of the way */ 1397 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1398 1399 return (0); 1400 } 1401 1402 static int 1403 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1404 u_char *data, int ch, int count) 1405 { 1406 1407 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1408 ch, count)); 1409 } 1410 1411 static int 1412 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1413 u_char *data, int ch, int count) 1414 { 1415 1416 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1417 ch, count)); 1418 } 1419 1420 static int 1421 vesa_show_font(video_adapter_t *adp, int page) 1422 { 1423 1424 return ((*prevvidsw->show_font)(adp, page)); 1425 } 1426 1427 static int 1428 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1429 { 1430 int bits; 1431 1432 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1433 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1434 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1435 return (0); 1436 } 1437 1438 return ((*prevvidsw->save_palette)(adp, palette)); 1439 } 1440 1441 static int 1442 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1443 { 1444 int bits; 1445 1446 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1447 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1448 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1449 return (0); 1450 } 1451 1452 return ((*prevvidsw->load_palette)(adp, palette)); 1453 } 1454 1455 static int 1456 vesa_set_border(video_adapter_t *adp, int color) 1457 { 1458 1459 return ((*prevvidsw->set_border)(adp, color)); 1460 } 1461 1462 static int 1463 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1464 { 1465 vm_offset_t buf; 1466 size_t bsize; 1467 1468 if (adp != vesa_adp || (size == 0 && vesa_state_buf_size == 0)) 1469 return ((*prevvidsw->save_state)(adp, p, size)); 1470 1471 bsize = offsetof(adp_state_t, regs) + vesa_state_buf_size; 1472 if (size == 0) 1473 return (bsize); 1474 if (vesa_state_buf_size > 0 && size < bsize) 1475 return (EINVAL); 1476 1477 if (VESA_MODE(adp->va_mode) && adp->va_buffer != 0) { 1478 buf = adp->va_buffer; 1479 bsize = adp->va_buffer_size; 1480 } else { 1481 buf = adp->va_window; 1482 bsize = adp->va_window_size; 1483 } 1484 if (buf != 0) { 1485 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT); 1486 if (vesa_vmem_buf != NULL) 1487 bcopy((void *)buf, vesa_vmem_buf, bsize); 1488 } else 1489 vesa_vmem_buf = NULL; 1490 if (vesa_state_buf_size == 0) 1491 return ((*prevvidsw->save_state)(adp, p, size)); 1492 ((adp_state_t *)p)->sig = V_STATE_SIG; 1493 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1494 } 1495 1496 static int 1497 vesa_load_state(video_adapter_t *adp, void *p) 1498 { 1499 vm_offset_t buf; 1500 size_t bsize; 1501 int error, mode; 1502 1503 if (adp != vesa_adp) 1504 return ((*prevvidsw->load_state)(adp, p)); 1505 1506 /* Try BIOS POST to restore a sane state. */ 1507 (void)vesa_bios_post(); 1508 mode = adp->va_mode; 1509 error = vesa_set_mode(adp, adp->va_initial_mode); 1510 if (mode != adp->va_initial_mode) 1511 error = vesa_set_mode(adp, mode); 1512 1513 if (vesa_vmem_buf != NULL) { 1514 if (error == 0) { 1515 if (VESA_MODE(mode) && adp->va_buffer != 0) { 1516 buf = adp->va_buffer; 1517 bsize = adp->va_buffer_size; 1518 } else { 1519 buf = adp->va_window; 1520 bsize = adp->va_window_size; 1521 } 1522 if (buf != 0) 1523 bcopy(vesa_vmem_buf, (void *)buf, bsize); 1524 } 1525 free(vesa_vmem_buf, M_DEVBUF); 1526 } 1527 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1528 return ((*prevvidsw->load_state)(adp, p)); 1529 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1530 } 1531 1532 #if 0 1533 static int 1534 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1535 { 1536 x86regs_t regs; 1537 1538 x86bios_init_regs(®s); 1539 regs.R_AX = 0x4f05; 1540 regs.R_BL = 0x10; 1541 1542 x86bios_intr(®s, 0x10); 1543 1544 if (regs.R_AX != 0x004f) 1545 return (1); 1546 *offset = regs.DX * adp->va_window_gran; 1547 1548 return (0); 1549 } 1550 #endif 1551 1552 static int 1553 vesa_set_origin(video_adapter_t *adp, off_t offset) 1554 { 1555 x86regs_t regs; 1556 1557 /* 1558 * This function should return as quickly as possible to 1559 * maintain good performance of the system. For this reason, 1560 * error checking is kept minimal and let the VESA BIOS to 1561 * detect error. 1562 */ 1563 if (adp != vesa_adp) 1564 return ((*prevvidsw->set_win_org)(adp, offset)); 1565 1566 /* if this is a linear frame buffer, do nothing */ 1567 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1568 return (0); 1569 /* XXX */ 1570 if (adp->va_window_gran == 0) 1571 return (1); 1572 1573 x86bios_init_regs(®s); 1574 regs.R_AX = 0x4f05; 1575 regs.R_DX = offset / adp->va_window_gran; 1576 1577 x86bios_intr(®s, 0x10); 1578 1579 if (regs.R_AX != 0x004f) 1580 return (1); 1581 1582 x86bios_init_regs(®s); 1583 regs.R_AX = 0x4f05; 1584 regs.R_BL = 1; 1585 regs.R_DX = offset / adp->va_window_gran; 1586 x86bios_intr(®s, 0x10); 1587 1588 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1589 return (0); /* XXX */ 1590 } 1591 1592 static int 1593 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1594 { 1595 1596 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1597 } 1598 1599 static int 1600 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1601 { 1602 1603 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1604 } 1605 1606 static int 1607 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1608 int celsize, int blink) 1609 { 1610 1611 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1612 blink)); 1613 } 1614 1615 static int 1616 vesa_blank_display(video_adapter_t *adp, int mode) 1617 { 1618 1619 /* XXX: use VESA DPMS */ 1620 return ((*prevvidsw->blank_display)(adp, mode)); 1621 } 1622 1623 static int 1624 vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1625 int prot, vm_memattr_t *memattr) 1626 { 1627 1628 #if VESA_DEBUG > 0 1629 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1630 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1631 #endif 1632 1633 if ((adp == vesa_adp) && 1634 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1635 /* va_window_size == va_buffer_size/vi_planes */ 1636 /* XXX: is this correct? */ 1637 if (offset > adp->va_window_size - PAGE_SIZE) 1638 return (-1); 1639 *paddr = adp->va_info.vi_buffer + offset; 1640 return (0); 1641 } 1642 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1643 } 1644 1645 static int 1646 vesa_clear(video_adapter_t *adp) 1647 { 1648 1649 return ((*prevvidsw->clear)(adp)); 1650 } 1651 1652 static int 1653 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1654 { 1655 1656 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1657 } 1658 1659 static int 1660 vesa_bitblt(video_adapter_t *adp,...) 1661 { 1662 1663 /* FIXME */ 1664 return (1); 1665 } 1666 1667 static int 1668 get_palette(video_adapter_t *adp, int base, int count, 1669 u_char *red, u_char *green, u_char *blue, u_char *trans) 1670 { 1671 u_char *r; 1672 u_char *g; 1673 u_char *b; 1674 int bits; 1675 int error; 1676 1677 if (base < 0 || base >= 256 || count < 0 || count > 256) 1678 return (1); 1679 if ((base + count) > 256) 1680 return (1); 1681 if (!VESA_MODE(adp->va_mode)) 1682 return (1); 1683 1684 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1685 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1686 g = r + count; 1687 b = g + count; 1688 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1689 if (error == 0) { 1690 copyout(r, red, count); 1691 copyout(g, green, count); 1692 copyout(b, blue, count); 1693 if (trans != NULL) { 1694 bzero(r, count); 1695 copyout(r, trans, count); 1696 } 1697 } 1698 free(r, M_DEVBUF); 1699 1700 return (error); 1701 } 1702 1703 static int 1704 set_palette(video_adapter_t *adp, int base, int count, 1705 u_char *red, u_char *green, u_char *blue, u_char *trans) 1706 { 1707 u_char *r; 1708 u_char *g; 1709 u_char *b; 1710 int bits; 1711 int error; 1712 1713 if (base < 0 || base >= 256 || count < 0 || count > 256) 1714 return (1); 1715 if ((base + count) > 256) 1716 return (1); 1717 if (!VESA_MODE(adp->va_mode)) 1718 return (1); 1719 1720 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1721 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1722 g = r + count; 1723 b = g + count; 1724 copyin(red, r, count); 1725 copyin(green, g, count); 1726 copyin(blue, b, count); 1727 1728 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1729 free(r, M_DEVBUF); 1730 1731 return (error); 1732 } 1733 1734 static int 1735 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1736 { 1737 int bytes; 1738 1739 if (adp != vesa_adp) 1740 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1741 1742 switch (cmd) { 1743 case FBIO_SETWINORG: /* set frame buffer window origin */ 1744 if (!VESA_MODE(adp->va_mode)) 1745 return (*prevvidsw->ioctl)(adp, cmd, arg); 1746 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1747 1748 case FBIO_SETDISPSTART: /* set display start address */ 1749 if (!VESA_MODE(adp->va_mode)) 1750 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1751 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1752 ((video_display_start_t *)arg)->y)) 1753 return (ENODEV); 1754 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1755 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1756 return (0); 1757 1758 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1759 if (!VESA_MODE(adp->va_mode)) 1760 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1761 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1762 return (ENODEV); 1763 adp->va_line_width = bytes; 1764 #if VESA_DEBUG > 1 1765 printf("new line width:%d\n", adp->va_line_width); 1766 #endif 1767 return (0); 1768 1769 case FBIO_GETPALETTE: /* get color palette */ 1770 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1771 ((video_color_palette_t *)arg)->count, 1772 ((video_color_palette_t *)arg)->red, 1773 ((video_color_palette_t *)arg)->green, 1774 ((video_color_palette_t *)arg)->blue, 1775 ((video_color_palette_t *)arg)->transparent)) 1776 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1777 return (0); 1778 1779 1780 case FBIO_SETPALETTE: /* set color palette */ 1781 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1782 ((video_color_palette_t *)arg)->count, 1783 ((video_color_palette_t *)arg)->red, 1784 ((video_color_palette_t *)arg)->green, 1785 ((video_color_palette_t *)arg)->blue, 1786 ((video_color_palette_t *)arg)->transparent)) 1787 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1788 return (0); 1789 1790 case FBIOGETCMAP: /* get color palette */ 1791 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1792 ((struct fbcmap *)arg)->count, 1793 ((struct fbcmap *)arg)->red, 1794 ((struct fbcmap *)arg)->green, 1795 ((struct fbcmap *)arg)->blue, NULL)) 1796 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1797 return (0); 1798 1799 case FBIOPUTCMAP: /* set color palette */ 1800 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1801 ((struct fbcmap *)arg)->count, 1802 ((struct fbcmap *)arg)->red, 1803 ((struct fbcmap *)arg)->green, 1804 ((struct fbcmap *)arg)->blue, NULL)) 1805 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1806 return (0); 1807 1808 default: 1809 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1810 } 1811 } 1812 1813 static int 1814 vesa_diag(video_adapter_t *adp, int level) 1815 { 1816 int error; 1817 1818 /* call the previous handler first */ 1819 error = (*prevvidsw->diag)(adp, level); 1820 if (error) 1821 return (error); 1822 1823 if (adp != vesa_adp) 1824 return (1); 1825 1826 if (level <= 0) 1827 return (0); 1828 1829 return (0); 1830 } 1831 1832 static int 1833 vesa_bios_info(int level) 1834 { 1835 #if VESA_DEBUG > 1 1836 struct vesa_mode vmode; 1837 int i; 1838 #endif 1839 uint16_t vers; 1840 1841 vers = vesa_adp_info->v_version; 1842 1843 if (bootverbose) { 1844 /* general adapter information */ 1845 printf( 1846 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1847 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1848 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1849 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1850 vesa_vmodetab, vesa_adp_info->v_modetable); 1851 1852 /* OEM string */ 1853 if (vesa_oemstr != NULL) 1854 printf("VESA: %s\n", vesa_oemstr); 1855 } 1856 1857 if (level <= 0) 1858 return (0); 1859 1860 if (vers >= 0x0200 && bootverbose) { 1861 /* vender name, product name, product revision */ 1862 printf("VESA: %s %s %s\n", 1863 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1864 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1865 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1866 } 1867 1868 #if VESA_DEBUG > 1 1869 /* mode information */ 1870 for (i = 0; 1871 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1872 && (vesa_vmodetab[i] != 0xffff); ++i) { 1873 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1874 continue; 1875 1876 /* print something for diagnostic purpose */ 1877 printf("VESA: mode:0x%03x, flags:0x%04x", 1878 vesa_vmodetab[i], vmode.v_modeattr); 1879 if (vmode.v_modeattr & V_MODEOPTINFO) { 1880 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1881 printf(", G %dx%dx%d %d, ", 1882 vmode.v_width, vmode.v_height, 1883 vmode.v_bpp, vmode.v_planes); 1884 } else { 1885 printf(", T %dx%d, ", 1886 vmode.v_width, vmode.v_height); 1887 } 1888 printf("font:%dx%d, ", 1889 vmode.v_cwidth, vmode.v_cheight); 1890 printf("pages:%d, mem:%d", 1891 vmode.v_ipages + 1, vmode.v_memmodel); 1892 } 1893 if (vmode.v_modeattr & V_MODELFB) { 1894 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1895 vmode.v_lfb, vmode.v_offscreen, 1896 vmode.v_offscreensize*1024); 1897 } 1898 printf("\n"); 1899 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1900 vmode.v_waseg, vmode.v_waattr, 1901 vmode.v_wbseg, vmode.v_wbattr); 1902 printf("size:%dk, gran:%dk\n", 1903 vmode.v_wsize, vmode.v_wgran); 1904 } 1905 #endif /* VESA_DEBUG > 1 */ 1906 1907 return (0); 1908 } 1909 1910 /* module loading */ 1911 1912 static int 1913 vesa_load(void) 1914 { 1915 int error; 1916 1917 if (vesa_init_done) 1918 return (0); 1919 1920 mtx_init(&vesa_lock, "VESA lock", NULL, MTX_DEF); 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 mtx_destroy(&vesa_lock); 1961 1962 return (error); 1963 } 1964 1965 static int 1966 vesa_mod_event(module_t mod, int type, void *data) 1967 { 1968 1969 switch (type) { 1970 case MOD_LOAD: 1971 return (vesa_load()); 1972 case MOD_UNLOAD: 1973 return (vesa_unload()); 1974 } 1975 return (EOPNOTSUPP); 1976 } 1977 1978 static moduledata_t vesa_mod = { 1979 "vesa", 1980 vesa_mod_event, 1981 NULL, 1982 }; 1983 1984 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1985 MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1986 1987 #endif /* VGA_NO_MODE_CHANGE */ 1988