1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 5 * Copyright (c) 2009-2013 Jung-uk Kim <jkim@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer as 13 * the first lines of this file unmodified. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include "opt_vga.h" 34 #include "opt_vesa.h" 35 36 #ifndef VGA_NO_MODE_CHANGE 37 38 #include <sys/param.h> 39 #include <sys/bus.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/lock.h> 43 #include <sys/module.h> 44 #include <sys/malloc.h> 45 #include <sys/mutex.h> 46 #include <sys/fbio.h> 47 #include <sys/sysctl.h> 48 49 #include <vm/vm.h> 50 #include <vm/vm_extern.h> 51 #include <vm/vm_kern.h> 52 #include <vm/vm_param.h> 53 #include <vm/pmap.h> 54 55 #include <machine/pc/bios.h> 56 #include <dev/fb/vesa.h> 57 58 #include <dev/fb/fbreg.h> 59 #include <dev/fb/vgareg.h> 60 61 #include <dev/pci/pcivar.h> 62 63 #include <isa/isareg.h> 64 65 #include <compat/x86bios/x86bios.h> 66 67 #define VESA_BIOS_OFFSET 0xc0000 68 #define VESA_PALETTE_SIZE (256 * 4) 69 #define VESA_VIA_CLE266 "VIA CLE266\r\n" 70 71 #ifndef VESA_DEBUG 72 #define VESA_DEBUG 0 73 #endif 74 75 /* VESA video adapter state buffer stub */ 76 struct adp_state { 77 int sig; 78 #define V_STATE_SIG 0x61736576 79 u_char regs[1]; 80 }; 81 typedef struct adp_state adp_state_t; 82 83 static struct mtx vesa_lock; 84 MTX_SYSINIT(vesa_lock, &vesa_lock, "VESA lock", MTX_DEF); 85 86 static int vesa_state; 87 static void *vesa_state_buf; 88 static uint32_t vesa_state_buf_offs; 89 static size_t vesa_state_buf_size; 90 91 static u_char *vesa_palette; 92 static uint32_t vesa_palette_offs; 93 94 static void *vesa_vmem_buf; 95 static size_t vesa_vmem_max; 96 97 static void *vesa_bios; 98 static uint32_t vesa_bios_offs; 99 static uint32_t vesa_bios_int10; 100 static size_t vesa_bios_size; 101 102 /* VESA video adapter */ 103 static video_adapter_t *vesa_adp; 104 105 static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging"); 106 static int vesa_shadow_rom; 107 SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 108 0, "Enable video BIOS shadow"); 109 110 /* VESA functions */ 111 #if 0 112 static int vesa_nop(void); 113 #endif 114 static int vesa_error(void); 115 static vi_probe_t vesa_probe; 116 static vi_init_t vesa_init; 117 static vi_get_info_t vesa_get_info; 118 static vi_query_mode_t vesa_query_mode; 119 static vi_set_mode_t vesa_set_mode; 120 static vi_save_font_t vesa_save_font; 121 static vi_load_font_t vesa_load_font; 122 static vi_show_font_t vesa_show_font; 123 static vi_save_palette_t vesa_save_palette; 124 static vi_load_palette_t vesa_load_palette; 125 static vi_set_border_t vesa_set_border; 126 static vi_save_state_t vesa_save_state; 127 static vi_load_state_t vesa_load_state; 128 static vi_set_win_org_t vesa_set_origin; 129 static vi_read_hw_cursor_t vesa_read_hw_cursor; 130 static vi_set_hw_cursor_t vesa_set_hw_cursor; 131 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 132 static vi_blank_display_t vesa_blank_display; 133 static vi_mmap_t vesa_mmap; 134 static vi_ioctl_t vesa_ioctl; 135 static vi_clear_t vesa_clear; 136 static vi_fill_rect_t vesa_fill_rect; 137 static vi_bitblt_t vesa_bitblt; 138 static vi_diag_t vesa_diag; 139 static int vesa_bios_info(int level); 140 141 static video_switch_t vesavidsw = { 142 vesa_probe, 143 vesa_init, 144 vesa_get_info, 145 vesa_query_mode, 146 vesa_set_mode, 147 vesa_save_font, 148 vesa_load_font, 149 vesa_show_font, 150 vesa_save_palette, 151 vesa_load_palette, 152 vesa_set_border, 153 vesa_save_state, 154 vesa_load_state, 155 vesa_set_origin, 156 vesa_read_hw_cursor, 157 vesa_set_hw_cursor, 158 vesa_set_hw_cursor_shape, 159 vesa_blank_display, 160 vesa_mmap, 161 vesa_ioctl, 162 vesa_clear, 163 vesa_fill_rect, 164 vesa_bitblt, 165 vesa_error, 166 vesa_error, 167 vesa_diag, 168 }; 169 170 static video_switch_t *prevvidsw; 171 172 /* VESA BIOS video modes */ 173 #define VESA_MAXMODES 64 174 #define EOT (-1) 175 #define NA (-2) 176 177 #define MODE_TABLE_DELTA 8 178 179 static int vesa_vmode_max; 180 static video_info_t *vesa_vmode; 181 182 static int vesa_init_done; 183 static struct vesa_info *vesa_adp_info; 184 static u_int16_t *vesa_vmodetab; 185 static char *vesa_oemstr; 186 static char *vesa_venderstr; 187 static char *vesa_prodstr; 188 static char *vesa_revstr; 189 190 /* local macros and functions */ 191 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 192 193 static int int10_set_mode(int mode); 194 static int vesa_bios_post(void); 195 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 196 static int vesa_bios_set_mode(int mode); 197 #if 0 198 static int vesa_bios_get_dac(void); 199 #endif 200 static int vesa_bios_set_dac(int bits); 201 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 202 int bits); 203 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 204 u_char *b, int bits); 205 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 206 int bits); 207 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 208 u_char *b, int bits); 209 #define STATE_SIZE 0 210 #define STATE_SAVE 1 211 #define STATE_LOAD 2 212 static size_t vesa_bios_state_buf_size(int); 213 static int vesa_bios_save_restore(int code, void *p); 214 #ifdef MODE_TABLE_BROKEN 215 static int vesa_bios_get_line_length(void); 216 #endif 217 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 218 #if 0 219 static int vesa_bios_get_start(int *x, int *y); 220 #endif 221 static int vesa_bios_set_start(int x, int y); 222 static int vesa_map_gen_mode_num(int type, int color, int mode); 223 static int vesa_translate_flags(u_int16_t vflags); 224 static int vesa_translate_mmodel(u_int8_t vmodel); 225 static int vesa_get_bpscanline(struct vesa_mode *vmode); 226 static int vesa_bios_init(void); 227 static void vesa_bios_uninit(void); 228 static void vesa_clear_modes(video_info_t *info, int color); 229 230 #if 0 231 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 232 #endif 233 234 /* INT 10 BIOS calls */ 235 static int 236 int10_set_mode(int mode) 237 { 238 x86regs_t regs; 239 240 x86bios_init_regs(®s); 241 regs.R_AL = mode; 242 243 x86bios_intr(®s, 0x10); 244 245 return (0); 246 } 247 248 static int 249 vesa_bios_post(void) 250 { 251 x86regs_t regs; 252 devclass_t dc; 253 device_t *devs; 254 device_t dev; 255 int count, i, is_pci; 256 257 if (x86bios_get_orm(vesa_bios_offs) == NULL) 258 return (1); 259 260 dev = NULL; 261 is_pci = 0; 262 263 /* Find the matching PCI video controller. */ 264 dc = devclass_find("vgapci"); 265 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 266 for (i = 0; i < count; i++) 267 if (device_get_flags(devs[i]) != 0 && 268 x86bios_match_device(vesa_bios_offs, devs[i])) { 269 dev = devs[i]; 270 is_pci = 1; 271 break; 272 } 273 free(devs, M_TEMP); 274 } 275 276 /* Try VGA if a PCI device is not found. */ 277 if (dev == NULL) { 278 dc = devclass_find(VGA_DRIVER_NAME); 279 if (dc != NULL) 280 dev = devclass_get_device(dc, 0); 281 } 282 283 if (bootverbose) 284 printf("%s: calling BIOS POST\n", 285 dev == NULL ? "VESA" : device_get_nameunit(dev)); 286 287 x86bios_init_regs(®s); 288 if (is_pci) { 289 regs.R_AH = pci_get_bus(dev); 290 regs.R_AL = (pci_get_slot(dev) << 3) | 291 (pci_get_function(dev) & 0x07); 292 } 293 regs.R_DL = 0x80; 294 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 295 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 296 297 if (x86bios_get_intr(0x10) == 0) 298 return (1); 299 300 return (0); 301 } 302 303 /* VESA BIOS calls */ 304 static int 305 vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 306 { 307 x86regs_t regs; 308 uint32_t offs; 309 void *buf; 310 311 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 312 if (buf == NULL) 313 return (1); 314 315 x86bios_init_regs(®s); 316 regs.R_AX = 0x4f01; 317 regs.R_CX = mode; 318 319 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 320 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 321 322 x86bios_intr(®s, 0x10); 323 324 if (regs.R_AX != 0x004f) { 325 x86bios_free(buf, sizeof(*vmode)); 326 return (1); 327 } 328 329 bcopy(buf, vmode, sizeof(*vmode)); 330 x86bios_free(buf, sizeof(*vmode)); 331 332 return (0); 333 } 334 335 static int 336 vesa_bios_set_mode(int mode) 337 { 338 x86regs_t regs; 339 340 x86bios_init_regs(®s); 341 regs.R_AX = 0x4f02; 342 regs.R_BX = mode; 343 344 x86bios_intr(®s, 0x10); 345 346 return (regs.R_AX != 0x004f); 347 } 348 349 #if 0 350 static int 351 vesa_bios_get_dac(void) 352 { 353 x86regs_t regs; 354 355 x86bios_init_regs(®s); 356 regs.R_AX = 0x4f08; 357 regs.R_BL = 1; 358 359 x86bios_intr(®s, 0x10); 360 361 if (regs.R_AX != 0x004f) 362 return (6); 363 364 return (regs.R_BH); 365 } 366 #endif 367 368 static int 369 vesa_bios_set_dac(int bits) 370 { 371 x86regs_t regs; 372 373 x86bios_init_regs(®s); 374 regs.R_AX = 0x4f08; 375 /* regs.R_BL = 0; */ 376 regs.R_BH = bits; 377 378 x86bios_intr(®s, 0x10); 379 380 if (regs.R_AX != 0x004f) 381 return (6); 382 383 return (regs.R_BH); 384 } 385 386 static int 387 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 388 { 389 x86regs_t regs; 390 int i; 391 392 x86bios_init_regs(®s); 393 regs.R_AX = 0x4f09; 394 regs.R_BL = 1; 395 regs.R_CX = colors; 396 regs.R_DX = start; 397 398 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 399 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 400 401 bits = 8 - bits; 402 mtx_lock(&vesa_lock); 403 x86bios_intr(®s, 0x10); 404 if (regs.R_AX != 0x004f) { 405 mtx_unlock(&vesa_lock); 406 return (1); 407 } 408 for (i = 0; i < colors; ++i) { 409 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 410 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 411 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 412 } 413 mtx_unlock(&vesa_lock); 414 415 return (0); 416 } 417 418 static int 419 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 420 int bits) 421 { 422 x86regs_t regs; 423 int i; 424 425 x86bios_init_regs(®s); 426 regs.R_AX = 0x4f09; 427 regs.R_BL = 1; 428 regs.R_CX = colors; 429 regs.R_DX = start; 430 431 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 432 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 433 434 bits = 8 - bits; 435 mtx_lock(&vesa_lock); 436 x86bios_intr(®s, 0x10); 437 if (regs.R_AX != 0x004f) { 438 mtx_unlock(&vesa_lock); 439 return (1); 440 } 441 for (i = 0; i < colors; ++i) { 442 r[i] = vesa_palette[i * 4 + 2] << bits; 443 g[i] = vesa_palette[i * 4 + 1] << bits; 444 b[i] = vesa_palette[i * 4] << bits; 445 } 446 mtx_unlock(&vesa_lock); 447 448 return (0); 449 } 450 451 static int 452 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 453 { 454 x86regs_t regs; 455 int i; 456 457 x86bios_init_regs(®s); 458 regs.R_AX = 0x4f09; 459 /* regs.R_BL = 0; */ 460 regs.R_CX = colors; 461 regs.R_DX = start; 462 463 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 464 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 465 466 bits = 8 - bits; 467 mtx_lock(&vesa_lock); 468 for (i = 0; i < colors; ++i) { 469 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 470 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 471 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 472 vesa_palette[i * 4 + 3] = 0; 473 } 474 x86bios_intr(®s, 0x10); 475 mtx_unlock(&vesa_lock); 476 477 return (regs.R_AX != 0x004f); 478 } 479 480 static int 481 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 482 int bits) 483 { 484 x86regs_t regs; 485 int i; 486 487 x86bios_init_regs(®s); 488 regs.R_AX = 0x4f09; 489 /* regs.R_BL = 0; */ 490 regs.R_CX = colors; 491 regs.R_DX = start; 492 493 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 494 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 495 496 bits = 8 - bits; 497 mtx_lock(&vesa_lock); 498 for (i = 0; i < colors; ++i) { 499 vesa_palette[i * 4] = b[i] >> bits; 500 vesa_palette[i * 4 + 1] = g[i] >> bits; 501 vesa_palette[i * 4 + 2] = r[i] >> bits; 502 vesa_palette[i * 4 + 3] = 0; 503 } 504 x86bios_intr(®s, 0x10); 505 mtx_unlock(&vesa_lock); 506 507 return (regs.R_AX != 0x004f); 508 } 509 510 static size_t 511 vesa_bios_state_buf_size(int state) 512 { 513 x86regs_t regs; 514 515 x86bios_init_regs(®s); 516 regs.R_AX = 0x4f04; 517 /* regs.R_DL = STATE_SIZE; */ 518 regs.R_CX = state; 519 520 x86bios_intr(®s, 0x10); 521 522 if (regs.R_AX != 0x004f) 523 return (0); 524 525 return (regs.R_BX * 64); 526 } 527 528 static int 529 vesa_bios_save_restore(int code, void *p) 530 { 531 x86regs_t regs; 532 533 if (code != STATE_SAVE && code != STATE_LOAD) 534 return (1); 535 536 x86bios_init_regs(®s); 537 regs.R_AX = 0x4f04; 538 regs.R_DL = code; 539 regs.R_CX = vesa_state; 540 541 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 542 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 543 544 mtx_lock(&vesa_lock); 545 switch (code) { 546 case STATE_SAVE: 547 x86bios_intr(®s, 0x10); 548 if (regs.R_AX == 0x004f) 549 bcopy(vesa_state_buf, p, vesa_state_buf_size); 550 break; 551 case STATE_LOAD: 552 bcopy(p, vesa_state_buf, vesa_state_buf_size); 553 x86bios_intr(®s, 0x10); 554 break; 555 } 556 mtx_unlock(&vesa_lock); 557 558 return (regs.R_AX != 0x004f); 559 } 560 561 #ifdef MODE_TABLE_BROKEN 562 static int 563 vesa_bios_get_line_length(void) 564 { 565 x86regs_t regs; 566 567 x86bios_init_regs(®s); 568 regs.R_AX = 0x4f06; 569 regs.R_BL = 1; 570 571 x86bios_intr(®s, 0x10); 572 573 if (regs.R_AX != 0x004f) 574 return (-1); 575 576 return (regs.R_BX); 577 } 578 #endif 579 580 static int 581 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 582 { 583 x86regs_t regs; 584 585 x86bios_init_regs(®s); 586 regs.R_AX = 0x4f06; 587 /* regs.R_BL = 0; */ 588 regs.R_CX = pixel; 589 590 x86bios_intr(®s, 0x10); 591 592 #if VESA_DEBUG > 1 593 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 594 #endif 595 if (regs.R_AX != 0x004f) 596 return (-1); 597 598 if (bytes != NULL) 599 *bytes = regs.R_BX; 600 if (lines != NULL) 601 *lines = regs.R_DX; 602 603 return (0); 604 } 605 606 #if 0 607 static int 608 vesa_bios_get_start(int *x, int *y) 609 { 610 x86regs_t regs; 611 612 x86bios_init_regs(®s); 613 regs.R_AX = 0x4f07; 614 regs.R_BL = 1; 615 616 x86bios_intr(®s, 0x10); 617 618 if (regs.R_AX != 0x004f) 619 return (-1); 620 621 *x = regs.R_CX; 622 *y = regs.R_DX; 623 624 return (0); 625 } 626 #endif 627 628 static int 629 vesa_bios_set_start(int x, int y) 630 { 631 x86regs_t regs; 632 633 x86bios_init_regs(®s); 634 regs.R_AX = 0x4f07; 635 regs.R_BL = 0x80; 636 regs.R_CX = x; 637 regs.R_DX = y; 638 639 x86bios_intr(®s, 0x10); 640 641 return (regs.R_AX != 0x004f); 642 } 643 644 /* map a generic video mode to a known mode */ 645 static int 646 vesa_map_gen_mode_num(int type, int color, int mode) 647 { 648 static struct { 649 int from; 650 int to; 651 } mode_map[] = { 652 { M_TEXT_132x25, M_VESA_C132x25 }, 653 { M_TEXT_132x43, M_VESA_C132x43 }, 654 { M_TEXT_132x50, M_VESA_C132x50 }, 655 { M_TEXT_132x60, M_VESA_C132x60 }, 656 }; 657 int i; 658 659 for (i = 0; i < nitems(mode_map); ++i) { 660 if (mode_map[i].from == mode) 661 return (mode_map[i].to); 662 } 663 return (mode); 664 } 665 666 static int 667 vesa_translate_flags(u_int16_t vflags) 668 { 669 static struct { 670 u_int16_t mask; 671 int set; 672 int reset; 673 } ftable[] = { 674 { V_MODECOLOR, V_INFO_COLOR, 0 }, 675 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 676 { V_MODELFB, V_INFO_LINEAR, 0 }, 677 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 678 }; 679 int flags; 680 int i; 681 682 for (flags = 0, i = 0; i < nitems(ftable); ++i) { 683 flags |= (vflags & ftable[i].mask) ? 684 ftable[i].set : ftable[i].reset; 685 } 686 return (flags); 687 } 688 689 static int 690 vesa_translate_mmodel(u_int8_t vmodel) 691 { 692 static struct { 693 u_int8_t vmodel; 694 int mmodel; 695 } mtable[] = { 696 { V_MMTEXT, V_INFO_MM_TEXT }, 697 { V_MMCGA, V_INFO_MM_CGA }, 698 { V_MMHGC, V_INFO_MM_HGC }, 699 { V_MMEGA, V_INFO_MM_PLANAR }, 700 { V_MMPACKED, V_INFO_MM_PACKED }, 701 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 702 }; 703 int i; 704 705 for (i = 0; mtable[i].mmodel >= 0; ++i) { 706 if (mtable[i].vmodel == vmodel) 707 return (mtable[i].mmodel); 708 } 709 return (V_INFO_MM_OTHER); 710 } 711 712 static int 713 vesa_get_bpscanline(struct vesa_mode *vmode) 714 { 715 int bpsl; 716 717 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 718 /* Find the minimum length. */ 719 switch (vmode->v_bpp / vmode->v_planes) { 720 case 1: 721 bpsl = vmode->v_width / 8; 722 break; 723 case 2: 724 bpsl = vmode->v_width / 4; 725 break; 726 case 4: 727 bpsl = vmode->v_width / 2; 728 break; 729 default: 730 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 731 bpsl /= vmode->v_planes; 732 break; 733 } 734 735 /* Use VBE 3.0 information if it looks sane. */ 736 if ((vmode->v_modeattr & V_MODELFB) != 0 && 737 vesa_adp_info->v_version >= 0x0300 && 738 vmode->v_linbpscanline > bpsl) 739 return (vmode->v_linbpscanline); 740 741 /* Return the minimum if the mode table looks absurd. */ 742 if (vmode->v_bpscanline < bpsl) 743 return (bpsl); 744 } 745 746 return (vmode->v_bpscanline); 747 } 748 749 #define VESA_MAXSTR 256 750 751 #define VESA_STRCPY(dst, src) do { \ 752 char *str; \ 753 int i; \ 754 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 755 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 756 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 757 dst[i] = str[i]; \ 758 dst[i] = '\0'; \ 759 } while (0) 760 761 static int 762 vesa_bios_init(void) 763 { 764 struct vesa_mode vmode; 765 struct vesa_info *buf; 766 video_info_t *p; 767 x86regs_t regs; 768 size_t bsize; 769 size_t msize; 770 void *vmbuf; 771 uint8_t *vbios; 772 uint32_t offs; 773 uint16_t vers; 774 int is_via_cle266; 775 int modes; 776 int i; 777 778 if (vesa_init_done) 779 return (0); 780 781 vesa_bios_offs = VESA_BIOS_OFFSET; 782 783 /* 784 * If the VBE real mode interrupt vector is not found, try BIOS POST. 785 */ 786 vesa_bios_int10 = x86bios_get_intr(0x10); 787 if (vesa_bios_int10 == 0) { 788 if (vesa_bios_post() != 0) 789 return (1); 790 vesa_bios_int10 = x86bios_get_intr(0x10); 791 if (vesa_bios_int10 == 0) 792 return (1); 793 } 794 795 /* 796 * Shadow video ROM. 797 */ 798 offs = vesa_bios_int10; 799 if (vesa_shadow_rom) { 800 vbios = x86bios_get_orm(vesa_bios_offs); 801 if (vbios != NULL) { 802 vesa_bios_size = vbios[2] * 512; 803 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 804 (vesa_bios_int10 & 0xffff0000) && 805 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 806 vesa_bios = x86bios_alloc(&vesa_bios_offs, 807 vesa_bios_size, M_WAITOK); 808 bcopy(vbios, vesa_bios, vesa_bios_size); 809 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 810 (vesa_bios_int10 & 0xffff); 811 x86bios_set_intr(0x10, offs); 812 } 813 } 814 if (vesa_bios == NULL) 815 printf("VESA: failed to shadow video ROM\n"); 816 } 817 if (bootverbose) 818 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 819 (offs >> 16) & 0xffff, offs & 0xffff); 820 821 x86bios_init_regs(®s); 822 regs.R_AX = 0x4f00; 823 824 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 825 826 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 827 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 828 829 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 830 x86bios_intr(®s, 0x10); 831 832 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 833 goto fail; 834 835 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 836 bcopy(vmbuf, buf, sizeof(*buf)); 837 838 if (bootverbose) { 839 printf("VESA: information block\n"); 840 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 841 } 842 843 vers = buf->v_version = le16toh(buf->v_version); 844 buf->v_oemstr = le32toh(buf->v_oemstr); 845 buf->v_flags = le32toh(buf->v_flags); 846 buf->v_modetable = le32toh(buf->v_modetable); 847 buf->v_memsize = le16toh(buf->v_memsize); 848 buf->v_revision = le16toh(buf->v_revision); 849 buf->v_venderstr = le32toh(buf->v_venderstr); 850 buf->v_prodstr = le32toh(buf->v_prodstr); 851 buf->v_revstr = le32toh(buf->v_revstr); 852 853 if (vers < 0x0102) { 854 printf("VESA: VBE version %d.%d is not supported; " 855 "version 1.2 or later is required.\n", 856 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 857 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 858 goto fail; 859 } 860 861 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 862 if (vers >= 0x0200) { 863 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 864 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 865 VESA_STRCPY(vesa_revstr, buf->v_revstr); 866 } 867 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 868 sizeof(VESA_VIA_CLE266)) == 0; 869 870 if (buf->v_modetable == 0) 871 goto fail; 872 873 msize = (size_t)buf->v_memsize * 64 * 1024; 874 875 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 876 877 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 878 (vesa_vmodetab[i] != 0xffff); ++i) { 879 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 880 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 881 continue; 882 883 vmode.v_modeattr = le16toh(vmode.v_modeattr); 884 vmode.v_wgran = le16toh(vmode.v_wgran); 885 vmode.v_wsize = le16toh(vmode.v_wsize); 886 vmode.v_waseg = le16toh(vmode.v_waseg); 887 vmode.v_wbseg = le16toh(vmode.v_wbseg); 888 vmode.v_posfunc = le32toh(vmode.v_posfunc); 889 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 890 vmode.v_width = le16toh(vmode.v_width); 891 vmode.v_height = le16toh(vmode.v_height); 892 vmode.v_lfb = le32toh(vmode.v_lfb); 893 vmode.v_offscreen = le32toh(vmode.v_offscreen); 894 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 895 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 896 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 897 898 /* reject unsupported modes */ 899 #if 0 900 if ((vmode.v_modeattr & 901 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 902 (V_MODESUPP | V_MODEOPTINFO)) 903 continue; 904 #else 905 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 906 #if VESA_DEBUG > 1 907 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 908 " attr = %x\n", 909 vmode.v_modeattr & V_MODEGRAPHICS ? 910 "graphics" : "text", 911 vmode.v_width, vmode.v_height, vmode.v_bpp, 912 vmode.v_modeattr); 913 #endif 914 continue; 915 } 916 #endif 917 918 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 919 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 920 bsize *= vmode.v_planes; 921 922 /* Does it have enough memory to support this mode? */ 923 if (msize < bsize) { 924 #if VESA_DEBUG > 1 925 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 926 " attr = %x, not enough memory\n", 927 vmode.v_modeattr & V_MODEGRAPHICS ? 928 "graphics" : "text", 929 vmode.v_width, vmode.v_height, vmode.v_bpp, 930 vmode.v_modeattr); 931 #endif 932 continue; 933 } 934 if (bsize > vesa_vmem_max) 935 vesa_vmem_max = bsize; 936 937 /* expand the array if necessary */ 938 if (modes >= vesa_vmode_max) { 939 vesa_vmode_max += MODE_TABLE_DELTA; 940 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 941 M_DEVBUF, M_WAITOK); 942 #if VESA_DEBUG > 1 943 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 944 modes, vesa_vmode_max); 945 #endif 946 if (modes > 0) { 947 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 948 free(vesa_vmode, M_DEVBUF); 949 } 950 vesa_vmode = p; 951 } 952 953 #if VESA_DEBUG > 1 954 printf("Found VESA %s mode: %d x %d x %d bpp\n", 955 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 956 vmode.v_width, vmode.v_height, vmode.v_bpp); 957 #endif 958 if (is_via_cle266) { 959 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 960 vmode.v_width &= 0xff; 961 vmode.v_waseg = 0xb8000 >> 4; 962 } 963 } 964 965 /* copy some fields */ 966 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 967 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 968 vesa_vmode[modes].vi_width = vmode.v_width; 969 vesa_vmode[modes].vi_height = vmode.v_height; 970 vesa_vmode[modes].vi_depth = vmode.v_bpp; 971 vesa_vmode[modes].vi_planes = vmode.v_planes; 972 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 973 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 974 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 975 /* XXX window B */ 976 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 977 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 978 if (vmode.v_modeattr & V_MODELFB) 979 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 980 vesa_vmode[modes].vi_buffer_size = bsize; 981 vesa_vmode[modes].vi_mem_model = 982 vesa_translate_mmodel(vmode.v_memmodel); 983 switch (vesa_vmode[modes].vi_mem_model) { 984 case V_INFO_MM_DIRECT: 985 if ((vmode.v_modeattr & V_MODELFB) != 0 && 986 vers >= 0x0300) { 987 vesa_vmode[modes].vi_pixel_fields[0] = 988 vmode.v_linredfieldpos; 989 vesa_vmode[modes].vi_pixel_fields[1] = 990 vmode.v_lingreenfieldpos; 991 vesa_vmode[modes].vi_pixel_fields[2] = 992 vmode.v_linbluefieldpos; 993 vesa_vmode[modes].vi_pixel_fields[3] = 994 vmode.v_linresfieldpos; 995 vesa_vmode[modes].vi_pixel_fsizes[0] = 996 vmode.v_linredmasksize; 997 vesa_vmode[modes].vi_pixel_fsizes[1] = 998 vmode.v_lingreenmasksize; 999 vesa_vmode[modes].vi_pixel_fsizes[2] = 1000 vmode.v_linbluemasksize; 1001 vesa_vmode[modes].vi_pixel_fsizes[3] = 1002 vmode.v_linresmasksize; 1003 } else { 1004 vesa_vmode[modes].vi_pixel_fields[0] = 1005 vmode.v_redfieldpos; 1006 vesa_vmode[modes].vi_pixel_fields[1] = 1007 vmode.v_greenfieldpos; 1008 vesa_vmode[modes].vi_pixel_fields[2] = 1009 vmode.v_bluefieldpos; 1010 vesa_vmode[modes].vi_pixel_fields[3] = 1011 vmode.v_resfieldpos; 1012 vesa_vmode[modes].vi_pixel_fsizes[0] = 1013 vmode.v_redmasksize; 1014 vesa_vmode[modes].vi_pixel_fsizes[1] = 1015 vmode.v_greenmasksize; 1016 vesa_vmode[modes].vi_pixel_fsizes[2] = 1017 vmode.v_bluemasksize; 1018 vesa_vmode[modes].vi_pixel_fsizes[3] = 1019 vmode.v_resmasksize; 1020 } 1021 /* FALLTHROUGH */ 1022 case V_INFO_MM_PACKED: 1023 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1024 break; 1025 } 1026 vesa_vmode[modes].vi_flags = 1027 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1028 1029 ++modes; 1030 } 1031 if (vesa_vmode != NULL) 1032 vesa_vmode[modes].vi_mode = EOT; 1033 1034 if (bootverbose) 1035 printf("VESA: %d mode(s) found\n", modes); 1036 1037 if (modes == 0) 1038 goto fail; 1039 1040 x86bios_free(vmbuf, sizeof(*buf)); 1041 1042 /* Probe supported save/restore states. */ 1043 for (i = 0; i < 4; i++) 1044 if (vesa_bios_state_buf_size(1 << i) > 0) 1045 vesa_state |= 1 << i; 1046 if (vesa_state != 0) 1047 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1048 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1049 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1050 if (vesa_state_buf_size > 0) { 1051 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1052 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1053 } 1054 1055 return (0); 1056 1057 fail: 1058 x86bios_free(vmbuf, sizeof(buf)); 1059 vesa_bios_uninit(); 1060 return (1); 1061 } 1062 1063 static void 1064 vesa_bios_uninit(void) 1065 { 1066 1067 if (vesa_bios != NULL) { 1068 x86bios_set_intr(0x10, vesa_bios_int10); 1069 vesa_bios_offs = VESA_BIOS_OFFSET; 1070 x86bios_free(vesa_bios, vesa_bios_size); 1071 vesa_bios = NULL; 1072 } 1073 if (vesa_adp_info != NULL) { 1074 free(vesa_adp_info, M_DEVBUF); 1075 vesa_adp_info = NULL; 1076 } 1077 if (vesa_oemstr != NULL) { 1078 free(vesa_oemstr, M_DEVBUF); 1079 vesa_oemstr = NULL; 1080 } 1081 if (vesa_venderstr != NULL) { 1082 free(vesa_venderstr, M_DEVBUF); 1083 vesa_venderstr = NULL; 1084 } 1085 if (vesa_prodstr != NULL) { 1086 free(vesa_prodstr, M_DEVBUF); 1087 vesa_prodstr = NULL; 1088 } 1089 if (vesa_revstr != NULL) { 1090 free(vesa_revstr, M_DEVBUF); 1091 vesa_revstr = NULL; 1092 } 1093 if (vesa_vmode != NULL) { 1094 free(vesa_vmode, M_DEVBUF); 1095 vesa_vmode = NULL; 1096 } 1097 if (vesa_palette != NULL) { 1098 x86bios_free(vesa_palette, 1099 VESA_PALETTE_SIZE + vesa_state_buf_size); 1100 vesa_palette = NULL; 1101 } 1102 } 1103 1104 static void 1105 vesa_clear_modes(video_info_t *info, int color) 1106 { 1107 while (info->vi_mode != EOT) { 1108 if ((info->vi_flags & V_INFO_COLOR) != color) 1109 info->vi_mode = NA; 1110 ++info; 1111 } 1112 } 1113 1114 /* entry points */ 1115 1116 static int 1117 vesa_configure(int flags) 1118 { 1119 video_adapter_t *adp; 1120 int adapters; 1121 int error; 1122 int i; 1123 1124 if (vesa_init_done) 1125 return (0); 1126 if (flags & VIO_PROBE_ONLY) 1127 return (0); 1128 1129 /* 1130 * If the VESA module has already been loaded, abort loading 1131 * the module this time. 1132 */ 1133 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1134 if (adp->va_flags & V_ADP_VESA) 1135 return (ENXIO); 1136 if (adp->va_type == KD_VGA) 1137 break; 1138 } 1139 1140 /* 1141 * The VGA adapter is not found. This is because either 1142 * 1) the VGA driver has not been initialized, or 2) the VGA card 1143 * is not present. If 1) is the case, we shall defer 1144 * initialization for now and try again later. 1145 */ 1146 if (adp == NULL) { 1147 vga_sub_configure = vesa_configure; 1148 return (ENODEV); 1149 } 1150 1151 /* count number of registered adapters */ 1152 for (++i; vid_get_adapter(i) != NULL; ++i) 1153 ; 1154 adapters = i; 1155 1156 /* call VESA BIOS */ 1157 vesa_adp = adp; 1158 if (vesa_bios_init()) { 1159 vesa_adp = NULL; 1160 return (ENXIO); 1161 } 1162 vesa_adp->va_flags |= V_ADP_VESA; 1163 1164 /* remove conflicting modes if we have more than one adapter */ 1165 if (adapters > 1) { 1166 vesa_clear_modes(vesa_vmode, 1167 (vesa_adp->va_flags & V_ADP_COLOR) ? 1168 V_INFO_COLOR : 0); 1169 } 1170 1171 if ((error = vesa_load_ioctl()) == 0) { 1172 prevvidsw = vidsw[vesa_adp->va_index]; 1173 vidsw[vesa_adp->va_index] = &vesavidsw; 1174 vesa_init_done = TRUE; 1175 } else { 1176 vesa_adp = NULL; 1177 return (error); 1178 } 1179 1180 return (0); 1181 } 1182 1183 #if 0 1184 static int 1185 vesa_nop(void) 1186 { 1187 1188 return (0); 1189 } 1190 #endif 1191 1192 static int 1193 vesa_error(void) 1194 { 1195 1196 return (1); 1197 } 1198 1199 static int 1200 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1201 { 1202 1203 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1204 } 1205 1206 static int 1207 vesa_init(int unit, video_adapter_t *adp, int flags) 1208 { 1209 1210 return ((*prevvidsw->init)(unit, adp, flags)); 1211 } 1212 1213 static int 1214 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1215 { 1216 int i; 1217 1218 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1219 return (0); 1220 1221 if (adp != vesa_adp) 1222 return (1); 1223 1224 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1225 vesa_adp->va_flags & V_ADP_COLOR, mode); 1226 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1227 if (vesa_vmode[i].vi_mode == NA) 1228 continue; 1229 if (vesa_vmode[i].vi_mode == mode) { 1230 *info = vesa_vmode[i]; 1231 return (0); 1232 } 1233 } 1234 return (1); 1235 } 1236 1237 static int 1238 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1239 { 1240 int i; 1241 1242 if ((*prevvidsw->query_mode)(adp, info) == 0) 1243 return (0); 1244 if (adp != vesa_adp) 1245 return (ENODEV); 1246 1247 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1248 if ((info->vi_width != 0) 1249 && (info->vi_width != vesa_vmode[i].vi_width)) 1250 continue; 1251 if ((info->vi_height != 0) 1252 && (info->vi_height != vesa_vmode[i].vi_height)) 1253 continue; 1254 if ((info->vi_cwidth != 0) 1255 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1256 continue; 1257 if ((info->vi_cheight != 0) 1258 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1259 continue; 1260 if ((info->vi_depth != 0) 1261 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1262 continue; 1263 if ((info->vi_planes != 0) 1264 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1265 continue; 1266 /* pixel format, memory model */ 1267 if ((info->vi_flags != 0) 1268 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1269 continue; 1270 *info = vesa_vmode[i]; 1271 return (0); 1272 } 1273 return (ENODEV); 1274 } 1275 1276 static int 1277 vesa_set_mode(video_adapter_t *adp, int mode) 1278 { 1279 video_info_t info; 1280 1281 if (adp != vesa_adp) 1282 return ((*prevvidsw->set_mode)(adp, mode)); 1283 1284 mode = vesa_map_gen_mode_num(adp->va_type, 1285 adp->va_flags & V_ADP_COLOR, mode); 1286 #if VESA_DEBUG > 0 1287 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1288 adp->va_mode, adp->va_mode, mode, mode); 1289 #endif 1290 /* 1291 * If the current mode is a VESA mode and the new mode is not, 1292 * restore the state of the adapter first by setting one of the 1293 * standard VGA mode, so that non-standard, extended SVGA registers 1294 * are set to the state compatible with the standard VGA modes. 1295 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1296 * the new mode correctly. 1297 */ 1298 if (VESA_MODE(adp->va_mode)) { 1299 if (!VESA_MODE(mode) && 1300 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1301 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1302 vesa_bios_set_dac(6); 1303 adp->va_flags &= ~V_ADP_DAC8; 1304 } 1305 int10_set_mode(adp->va_initial_bios_mode); 1306 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1307 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1308 /* 1309 * Once (*prevvidsw->get_info)() succeeded, 1310 * (*prevvidsw->set_mode)() below won't fail... 1311 */ 1312 } 1313 } 1314 1315 /* we may not need to handle this mode after all... */ 1316 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1317 return (0); 1318 1319 /* is the new mode supported? */ 1320 if (vesa_get_info(adp, mode, &info)) 1321 return (1); 1322 /* assert(VESA_MODE(mode)); */ 1323 1324 #if VESA_DEBUG > 0 1325 printf("VESA: about to set a VESA mode...\n"); 1326 #endif 1327 /* 1328 * The mode change should reset the palette format to 6 bits, so 1329 * we must reset V_ADP_DAC8. Some BIOSes do an incomplete reset 1330 * if we call them with an 8-bit palette, so reset directly. 1331 */ 1332 if (adp->va_flags & V_ADP_DAC8) { 1333 vesa_bios_set_dac(6); 1334 adp->va_flags &= ~V_ADP_DAC8; 1335 } 1336 1337 /* don't use the linear frame buffer for text modes. XXX */ 1338 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1339 info.vi_flags &= ~V_INFO_LINEAR; 1340 1341 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1342 mode |= 0x4000; 1343 if (vesa_bios_set_mode(mode | 0x8000)) 1344 return (1); 1345 1346 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1347 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1348 vesa_bios_set_dac(8) > 6) 1349 adp->va_flags |= V_ADP_DAC8; 1350 1351 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1352 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1353 1354 #if VESA_DEBUG > 0 1355 printf("VESA: mode set!\n"); 1356 #endif 1357 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1358 vesa_adp->va_flags &= ~V_ADP_COLOR; 1359 vesa_adp->va_flags |= 1360 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1361 vesa_adp->va_crtc_addr = 1362 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1363 1364 vesa_adp->va_flags &= ~V_ADP_CWIDTH9; 1365 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1366 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1367 vesa_adp->va_line_width /= info.vi_planes; 1368 1369 #ifdef MODE_TABLE_BROKEN 1370 /* If VBE function returns bigger bytes per scan line, use it. */ 1371 { 1372 int bpsl = vesa_bios_get_line_length(); 1373 if (bpsl > vesa_adp->va_line_width) { 1374 vesa_adp->va_line_width = bpsl; 1375 info.vi_buffer_size = bpsl * info.vi_height; 1376 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1377 info.vi_buffer_size *= info.vi_planes; 1378 } 1379 } 1380 #endif 1381 1382 if (info.vi_flags & V_INFO_LINEAR) { 1383 #if VESA_DEBUG > 1 1384 printf("VESA: setting up LFB\n"); 1385 #endif 1386 vesa_adp->va_buffer = 1387 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1388 vesa_vmem_max, PAT_WRITE_COMBINING); 1389 vesa_adp->va_window = vesa_adp->va_buffer; 1390 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1391 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1392 } else { 1393 vesa_adp->va_buffer = 0; 1394 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1395 vesa_adp->va_window_size = info.vi_window_size; 1396 vesa_adp->va_window_gran = info.vi_window_gran; 1397 } 1398 vesa_adp->va_buffer_size = info.vi_buffer_size; 1399 vesa_adp->va_window_orig = 0; 1400 vesa_adp->va_disp_start.x = 0; 1401 vesa_adp->va_disp_start.y = 0; 1402 #if VESA_DEBUG > 0 1403 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1404 info.vi_width, vesa_adp->va_line_width); 1405 #endif 1406 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1407 1408 /* move hardware cursor out of the way */ 1409 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1410 1411 return (0); 1412 } 1413 1414 static int 1415 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1416 u_char *data, int ch, int count) 1417 { 1418 1419 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1420 ch, count)); 1421 } 1422 1423 static int 1424 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1425 u_char *data, int ch, int count) 1426 { 1427 1428 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1429 ch, count)); 1430 } 1431 1432 static int 1433 vesa_show_font(video_adapter_t *adp, int page) 1434 { 1435 1436 return ((*prevvidsw->show_font)(adp, page)); 1437 } 1438 1439 static int 1440 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1441 { 1442 int bits; 1443 1444 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1445 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1446 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1447 return (0); 1448 } 1449 1450 return ((*prevvidsw->save_palette)(adp, palette)); 1451 } 1452 1453 static int 1454 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1455 { 1456 int bits; 1457 1458 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1459 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1460 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1461 return (0); 1462 } 1463 1464 return ((*prevvidsw->load_palette)(adp, palette)); 1465 } 1466 1467 static int 1468 vesa_set_border(video_adapter_t *adp, int color) 1469 { 1470 1471 return ((*prevvidsw->set_border)(adp, color)); 1472 } 1473 1474 static int 1475 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1476 { 1477 void *buf; 1478 size_t bsize; 1479 1480 if (adp != vesa_adp || (size == 0 && vesa_state_buf_size == 0)) 1481 return ((*prevvidsw->save_state)(adp, p, size)); 1482 1483 bsize = offsetof(adp_state_t, regs) + vesa_state_buf_size; 1484 if (size == 0) 1485 return (bsize); 1486 if (vesa_state_buf_size > 0 && size < bsize) 1487 return (EINVAL); 1488 1489 if (vesa_vmem_buf != NULL) { 1490 free(vesa_vmem_buf, M_DEVBUF); 1491 vesa_vmem_buf = NULL; 1492 } 1493 if (VESA_MODE(adp->va_mode)) { 1494 buf = (void *)adp->va_buffer; 1495 if (buf != NULL) { 1496 bsize = adp->va_buffer_size; 1497 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT); 1498 if (vesa_vmem_buf != NULL) 1499 bcopy(buf, vesa_vmem_buf, bsize); 1500 } 1501 } 1502 if (vesa_state_buf_size == 0) 1503 return ((*prevvidsw->save_state)(adp, p, size)); 1504 ((adp_state_t *)p)->sig = V_STATE_SIG; 1505 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1506 } 1507 1508 static int 1509 vesa_load_state(video_adapter_t *adp, void *p) 1510 { 1511 void *buf; 1512 size_t bsize; 1513 int error, mode; 1514 1515 if (adp != vesa_adp) 1516 return ((*prevvidsw->load_state)(adp, p)); 1517 1518 /* Try BIOS POST to restore a sane state. */ 1519 (void)vesa_bios_post(); 1520 bsize = adp->va_buffer_size; 1521 mode = adp->va_mode; 1522 error = vesa_set_mode(adp, adp->va_initial_mode); 1523 if (mode != adp->va_initial_mode) 1524 error = vesa_set_mode(adp, mode); 1525 1526 if (vesa_vmem_buf != NULL) { 1527 if (error == 0 && VESA_MODE(mode)) { 1528 buf = (void *)adp->va_buffer; 1529 if (buf != NULL) 1530 bcopy(vesa_vmem_buf, buf, bsize); 1531 } 1532 free(vesa_vmem_buf, M_DEVBUF); 1533 vesa_vmem_buf = NULL; 1534 } 1535 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1536 return ((*prevvidsw->load_state)(adp, p)); 1537 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1538 } 1539 1540 #if 0 1541 static int 1542 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1543 { 1544 x86regs_t regs; 1545 1546 x86bios_init_regs(®s); 1547 regs.R_AX = 0x4f05; 1548 regs.R_BL = 0x10; 1549 1550 x86bios_intr(®s, 0x10); 1551 1552 if (regs.R_AX != 0x004f) 1553 return (1); 1554 *offset = regs.DX * adp->va_window_gran; 1555 1556 return (0); 1557 } 1558 #endif 1559 1560 static int 1561 vesa_set_origin(video_adapter_t *adp, off_t offset) 1562 { 1563 x86regs_t regs; 1564 1565 /* 1566 * This function should return as quickly as possible to 1567 * maintain good performance of the system. For this reason, 1568 * error checking is kept minimal and let the VESA BIOS to 1569 * detect error. 1570 */ 1571 if (adp != vesa_adp) 1572 return ((*prevvidsw->set_win_org)(adp, offset)); 1573 1574 /* if this is a linear frame buffer, do nothing */ 1575 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1576 return (0); 1577 /* XXX */ 1578 if (adp->va_window_gran == 0) 1579 return (1); 1580 1581 x86bios_init_regs(®s); 1582 regs.R_AX = 0x4f05; 1583 regs.R_DX = offset / adp->va_window_gran; 1584 1585 x86bios_intr(®s, 0x10); 1586 1587 if (regs.R_AX != 0x004f) 1588 return (1); 1589 1590 x86bios_init_regs(®s); 1591 regs.R_AX = 0x4f05; 1592 regs.R_BL = 1; 1593 regs.R_DX = offset / adp->va_window_gran; 1594 x86bios_intr(®s, 0x10); 1595 1596 adp->va_window_orig = rounddown(offset, adp->va_window_gran); 1597 return (0); /* XXX */ 1598 } 1599 1600 static int 1601 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1602 { 1603 1604 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1605 } 1606 1607 static int 1608 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1609 { 1610 1611 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1612 } 1613 1614 static int 1615 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1616 int celsize, int blink) 1617 { 1618 1619 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1620 blink)); 1621 } 1622 1623 static int 1624 vesa_blank_display(video_adapter_t *adp, int mode) 1625 { 1626 1627 /* XXX: use VESA DPMS */ 1628 return ((*prevvidsw->blank_display)(adp, mode)); 1629 } 1630 1631 static int 1632 vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1633 int prot, vm_memattr_t *memattr) 1634 { 1635 1636 #if VESA_DEBUG > 0 1637 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1638 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1639 #endif 1640 1641 if ((adp == vesa_adp) && 1642 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1643 /* va_window_size == va_buffer_size/vi_planes */ 1644 /* XXX: is this correct? */ 1645 if (offset > adp->va_window_size - PAGE_SIZE) 1646 return (-1); 1647 *paddr = adp->va_info.vi_buffer + offset; 1648 #ifdef VM_MEMATTR_WRITE_COMBINING 1649 *memattr = VM_MEMATTR_WRITE_COMBINING; 1650 #endif 1651 return (0); 1652 } 1653 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1654 } 1655 1656 static int 1657 vesa_clear(video_adapter_t *adp) 1658 { 1659 1660 return ((*prevvidsw->clear)(adp)); 1661 } 1662 1663 static int 1664 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1665 { 1666 1667 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1668 } 1669 1670 static int 1671 vesa_bitblt(video_adapter_t *adp,...) 1672 { 1673 1674 /* FIXME */ 1675 return (1); 1676 } 1677 1678 static int 1679 get_palette(video_adapter_t *adp, int base, int count, 1680 u_char *red, u_char *green, u_char *blue, u_char *trans) 1681 { 1682 u_char *r; 1683 u_char *g; 1684 u_char *b; 1685 int bits; 1686 int error; 1687 1688 if (base < 0 || base >= 256 || count < 0 || count > 256) 1689 return (1); 1690 if ((base + count) > 256) 1691 return (1); 1692 if (!VESA_MODE(adp->va_mode)) 1693 return (1); 1694 1695 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1696 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1697 g = r + count; 1698 b = g + count; 1699 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1700 if (error == 0) { 1701 copyout(r, red, count); 1702 copyout(g, green, count); 1703 copyout(b, blue, count); 1704 if (trans != NULL) { 1705 bzero(r, count); 1706 copyout(r, trans, count); 1707 } 1708 } 1709 free(r, M_DEVBUF); 1710 1711 return (error); 1712 } 1713 1714 static int 1715 set_palette(video_adapter_t *adp, int base, int count, 1716 u_char *red, u_char *green, u_char *blue, u_char *trans) 1717 { 1718 u_char *r; 1719 u_char *g; 1720 u_char *b; 1721 int bits; 1722 int error; 1723 1724 if (base < 0 || base >= 256 || count < 0 || count > 256) 1725 return (1); 1726 if ((base + count) > 256) 1727 return (1); 1728 if (!VESA_MODE(adp->va_mode)) 1729 return (1); 1730 1731 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1732 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1733 g = r + count; 1734 b = g + count; 1735 copyin(red, r, count); 1736 copyin(green, g, count); 1737 copyin(blue, b, count); 1738 1739 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1740 free(r, M_DEVBUF); 1741 1742 return (error); 1743 } 1744 1745 static int 1746 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1747 { 1748 int bytes; 1749 1750 if (adp != vesa_adp) 1751 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1752 1753 switch (cmd) { 1754 case FBIO_SETWINORG: /* set frame buffer window origin */ 1755 if (!VESA_MODE(adp->va_mode)) 1756 return (*prevvidsw->ioctl)(adp, cmd, arg); 1757 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1758 1759 case FBIO_SETDISPSTART: /* set display start address */ 1760 if (!VESA_MODE(adp->va_mode)) 1761 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1762 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1763 ((video_display_start_t *)arg)->y)) 1764 return (ENODEV); 1765 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1766 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1767 return (0); 1768 1769 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1770 if (!VESA_MODE(adp->va_mode)) 1771 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1772 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1773 return (ENODEV); 1774 adp->va_line_width = bytes; 1775 #if VESA_DEBUG > 1 1776 printf("new line width:%d\n", adp->va_line_width); 1777 #endif 1778 return (0); 1779 1780 case FBIO_GETPALETTE: /* get color palette */ 1781 if (get_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 1791 case FBIO_SETPALETTE: /* set color palette */ 1792 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1793 ((video_color_palette_t *)arg)->count, 1794 ((video_color_palette_t *)arg)->red, 1795 ((video_color_palette_t *)arg)->green, 1796 ((video_color_palette_t *)arg)->blue, 1797 ((video_color_palette_t *)arg)->transparent)) 1798 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1799 return (0); 1800 1801 case FBIOGETCMAP: /* get color palette */ 1802 if (get_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 case FBIOPUTCMAP: /* set color palette */ 1811 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1812 ((struct fbcmap *)arg)->count, 1813 ((struct fbcmap *)arg)->red, 1814 ((struct fbcmap *)arg)->green, 1815 ((struct fbcmap *)arg)->blue, NULL)) 1816 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1817 return (0); 1818 1819 default: 1820 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1821 } 1822 } 1823 1824 static int 1825 vesa_diag(video_adapter_t *adp, int level) 1826 { 1827 int error; 1828 1829 /* call the previous handler first */ 1830 error = (*prevvidsw->diag)(adp, level); 1831 if (error) 1832 return (error); 1833 1834 if (adp != vesa_adp) 1835 return (1); 1836 1837 if (level <= 0) 1838 return (0); 1839 1840 return (0); 1841 } 1842 1843 static int 1844 vesa_bios_info(int level) 1845 { 1846 #if VESA_DEBUG > 1 1847 struct vesa_mode vmode; 1848 int i; 1849 #endif 1850 uint16_t vers; 1851 1852 vers = vesa_adp_info->v_version; 1853 1854 if (bootverbose) { 1855 /* general adapter information */ 1856 printf( 1857 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1858 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1859 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1860 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1861 vesa_vmodetab, vesa_adp_info->v_modetable); 1862 1863 /* OEM string */ 1864 if (vesa_oemstr != NULL) 1865 printf("VESA: %s\n", vesa_oemstr); 1866 } 1867 1868 if (level <= 0) 1869 return (0); 1870 1871 if (vers >= 0x0200 && bootverbose) { 1872 /* vender name, product name, product revision */ 1873 printf("VESA: %s %s %s\n", 1874 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1875 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1876 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1877 } 1878 1879 #if VESA_DEBUG > 1 1880 /* mode information */ 1881 for (i = 0; 1882 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1883 && (vesa_vmodetab[i] != 0xffff); ++i) { 1884 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1885 continue; 1886 1887 /* print something for diagnostic purpose */ 1888 printf("VESA: mode:0x%03x, flags:0x%04x", 1889 vesa_vmodetab[i], vmode.v_modeattr); 1890 if (vmode.v_modeattr & V_MODEOPTINFO) { 1891 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1892 printf(", G %dx%dx%d %d, ", 1893 vmode.v_width, vmode.v_height, 1894 vmode.v_bpp, vmode.v_planes); 1895 } else { 1896 printf(", T %dx%d, ", 1897 vmode.v_width, vmode.v_height); 1898 } 1899 printf("font:%dx%d, ", 1900 vmode.v_cwidth, vmode.v_cheight); 1901 printf("pages:%d, mem:%d", 1902 vmode.v_ipages + 1, vmode.v_memmodel); 1903 } 1904 if (vmode.v_modeattr & V_MODELFB) { 1905 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1906 vmode.v_lfb, vmode.v_offscreen, 1907 vmode.v_offscreensize*1024); 1908 } 1909 printf("\n"); 1910 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1911 vmode.v_waseg, vmode.v_waattr, 1912 vmode.v_wbseg, vmode.v_wbattr); 1913 printf("size:%dk, gran:%dk\n", 1914 vmode.v_wsize, vmode.v_wgran); 1915 } 1916 #endif /* VESA_DEBUG > 1 */ 1917 1918 return (0); 1919 } 1920 1921 /* module loading */ 1922 1923 static int 1924 vesa_load(void) 1925 { 1926 int error; 1927 1928 if (vesa_init_done) 1929 return (0); 1930 1931 /* locate a VGA adapter */ 1932 vesa_adp = NULL; 1933 error = vesa_configure(0); 1934 1935 if (error == 0) 1936 vesa_bios_info(bootverbose); 1937 1938 /* Don't return ENODEV, the upper layers will whine. */ 1939 if (error == ENODEV) { 1940 error = 0; 1941 vesa_adp = NULL; 1942 } 1943 1944 return (error); 1945 } 1946 1947 static int 1948 vesa_unload(void) 1949 { 1950 int error; 1951 1952 /* The driver never initialized, so make it easy to unload. */ 1953 if (vesa_adp == NULL) 1954 return (0); 1955 1956 /* if the adapter is currently in a VESA mode, don't unload */ 1957 if (VESA_MODE(vesa_adp->va_mode)) 1958 return (EBUSY); 1959 /* 1960 * FIXME: if there is at least one vty which is in a VESA mode, 1961 * we shouldn't be unloading! XXX 1962 */ 1963 1964 if ((error = vesa_unload_ioctl()) == 0) { 1965 if (vesa_adp != NULL) { 1966 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1967 vesa_bios_set_dac(6); 1968 vesa_adp->va_flags &= ~V_ADP_DAC8; 1969 } 1970 vesa_adp->va_flags &= ~V_ADP_VESA; 1971 vidsw[vesa_adp->va_index] = prevvidsw; 1972 } 1973 } 1974 1975 vesa_bios_uninit(); 1976 1977 return (error); 1978 } 1979 1980 static int 1981 vesa_mod_event(module_t mod, int type, void *data) 1982 { 1983 1984 switch (type) { 1985 case MOD_LOAD: 1986 return (vesa_load()); 1987 case MOD_UNLOAD: 1988 return (vesa_unload()); 1989 } 1990 return (EOPNOTSUPP); 1991 } 1992 1993 static moduledata_t vesa_mod = { 1994 "vesa", 1995 vesa_mod_event, 1996 NULL, 1997 }; 1998 1999 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2000 MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 2001 2002 #endif /* VGA_NO_MODE_CHANGE */ 2003