vesa.c revision 205557
1/*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/fb/vesa.c 205557 2010-03-23 22:35:52Z jkim $"); 29 30#include "opt_vga.h" 31#include "opt_vesa.h" 32 33#ifndef VGA_NO_MODE_CHANGE 34 35#include <sys/param.h> 36#include <sys/bus.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/module.h> 40#include <sys/malloc.h> 41#include <sys/fbio.h> 42 43#include <vm/vm.h> 44#include <vm/vm_extern.h> 45#include <vm/vm_kern.h> 46#include <vm/vm_param.h> 47#include <vm/pmap.h> 48 49#include <machine/pc/bios.h> 50#include <dev/fb/vesa.h> 51 52#include <dev/fb/fbreg.h> 53#include <dev/fb/vgareg.h> 54 55#include <dev/pci/pcivar.h> 56 57#include <isa/isareg.h> 58 59#include <compat/x86bios/x86bios.h> 60 61#define VESA_VIA_CLE266 "VIA CLE266\r\n" 62 63#ifndef VESA_DEBUG 64#define VESA_DEBUG 0 65#endif 66 67/* VESA video adapter state buffer stub */ 68struct adp_state { 69 int sig; 70#define V_STATE_SIG 0x61736576 71 u_char regs[1]; 72}; 73typedef struct adp_state adp_state_t; 74 75/* VESA video adapter */ 76static video_adapter_t *vesa_adp = NULL; 77static ssize_t vesa_state_buf_size = -1; 78 79/* VESA functions */ 80#if 0 81static int vesa_nop(void); 82#endif 83static int vesa_error(void); 84static vi_probe_t vesa_probe; 85static vi_init_t vesa_init; 86static vi_get_info_t vesa_get_info; 87static vi_query_mode_t vesa_query_mode; 88static vi_set_mode_t vesa_set_mode; 89static vi_save_font_t vesa_save_font; 90static vi_load_font_t vesa_load_font; 91static vi_show_font_t vesa_show_font; 92static vi_save_palette_t vesa_save_palette; 93static vi_load_palette_t vesa_load_palette; 94static vi_set_border_t vesa_set_border; 95static vi_save_state_t vesa_save_state; 96static vi_load_state_t vesa_load_state; 97static vi_set_win_org_t vesa_set_origin; 98static vi_read_hw_cursor_t vesa_read_hw_cursor; 99static vi_set_hw_cursor_t vesa_set_hw_cursor; 100static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 101static vi_blank_display_t vesa_blank_display; 102static vi_mmap_t vesa_mmap; 103static vi_ioctl_t vesa_ioctl; 104static vi_clear_t vesa_clear; 105static vi_fill_rect_t vesa_fill_rect; 106static vi_bitblt_t vesa_bitblt; 107static vi_diag_t vesa_diag; 108static int vesa_bios_info(int level); 109 110static video_switch_t vesavidsw = { 111 vesa_probe, 112 vesa_init, 113 vesa_get_info, 114 vesa_query_mode, 115 vesa_set_mode, 116 vesa_save_font, 117 vesa_load_font, 118 vesa_show_font, 119 vesa_save_palette, 120 vesa_load_palette, 121 vesa_set_border, 122 vesa_save_state, 123 vesa_load_state, 124 vesa_set_origin, 125 vesa_read_hw_cursor, 126 vesa_set_hw_cursor, 127 vesa_set_hw_cursor_shape, 128 vesa_blank_display, 129 vesa_mmap, 130 vesa_ioctl, 131 vesa_clear, 132 vesa_fill_rect, 133 vesa_bitblt, 134 vesa_error, 135 vesa_error, 136 vesa_diag, 137}; 138 139static video_switch_t *prevvidsw; 140 141/* VESA BIOS video modes */ 142#define VESA_MAXMODES 64 143#define EOT (-1) 144#define NA (-2) 145 146#define MODE_TABLE_DELTA 8 147 148static int vesa_vmode_max = 0; 149static video_info_t vesa_vmode_empty = { EOT }; 150static video_info_t *vesa_vmode = &vesa_vmode_empty; 151 152static int vesa_init_done = FALSE; 153static int has_vesa_bios = FALSE; 154static struct vesa_info *vesa_adp_info = NULL; 155static u_int16_t *vesa_vmodetab = NULL; 156static char *vesa_oemstr = NULL; 157static char *vesa_venderstr = NULL; 158static char *vesa_prodstr = NULL; 159static char *vesa_revstr = NULL; 160 161/* local macros and functions */ 162#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 163 164static int int10_set_mode(int mode); 165static int vesa_bios_post(void); 166static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 167static int vesa_bios_set_mode(int mode); 168#if 0 169static int vesa_bios_get_dac(void); 170#endif 171static int vesa_bios_set_dac(int bits); 172static int vesa_bios_save_palette(int start, int colors, u_char *palette, 173 int bits); 174static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 175 u_char *b, int bits); 176static int vesa_bios_load_palette(int start, int colors, u_char *palette, 177 int bits); 178static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 179 u_char *b, int bits); 180#define STATE_SIZE 0 181#define STATE_SAVE 1 182#define STATE_LOAD 2 183#define STATE_HW (1<<0) 184#define STATE_DATA (1<<1) 185#define STATE_DAC (1<<2) 186#define STATE_REG (1<<3) 187#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 188#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 189static ssize_t vesa_bios_state_buf_size(void); 190static int vesa_bios_save_restore(int code, void *p, size_t size); 191#if 0 192static int vesa_bios_get_line_length(void); 193#endif 194static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 195#if 0 196static int vesa_bios_get_start(int *x, int *y); 197#endif 198static int vesa_bios_set_start(int x, int y); 199static int vesa_map_gen_mode_num(int type, int color, int mode); 200static int vesa_translate_flags(u_int16_t vflags); 201static int vesa_translate_mmodel(u_int8_t vmodel); 202static int vesa_bios_init(void); 203static void vesa_clear_modes(video_info_t *info, int color); 204 205#if 0 206static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 207#endif 208 209/* INT 10 BIOS calls */ 210static int 211int10_set_mode(int mode) 212{ 213 x86regs_t regs; 214 215 x86bios_init_regs(®s); 216 regs.R_AL = mode; 217 218 x86bios_intr(®s, 0x10); 219 220 return (0); 221} 222 223static int 224vesa_bios_post(void) 225{ 226 x86regs_t regs; 227 devclass_t dc; 228 device_t *devs; 229 device_t dev; 230 int count, i, is_pci; 231 232 if (x86bios_get_orm(0xc0000) == NULL) 233 return (1); 234 235 dev = NULL; 236 is_pci = 0; 237 238 /* Find the matching PCI video controller. */ 239 dc = devclass_find("vgapci"); 240 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 241 for (dev = NULL, i = 0; dev == NULL && i < count; devs++, i++) 242 if (device_get_flags(*devs) != 0 && 243 x86bios_match_device(0xc0000, *devs)) { 244 dev = *devs; 245 is_pci = 1; 246 break; 247 } 248 free(devs, M_TEMP); 249 } 250 251 /* Try VGA if a PCI device is not found. */ 252 if (dev == NULL) { 253 dc = devclass_find(VGA_DRIVER_NAME); 254 if (dc != NULL) 255 dev = devclass_get_device(dc, 0); 256 } 257 258 if (bootverbose) 259 printf("%s: calling BIOS POST\n", 260 dev == NULL ? "VESA" : device_get_nameunit(dev)); 261 262 x86bios_init_regs(®s); 263 if (is_pci) { 264 regs.R_AH = pci_get_bus(dev); 265 regs.R_AL = (pci_get_slot(dev) << 3) | 266 (pci_get_function(dev) & 0x07); 267 } 268 regs.R_DL = 0x80; 269 x86bios_call(®s, 0xc000, 0x0003); 270 271 if (x86bios_get_intr(0x10) == 0) 272 return (1); 273 274 return (0); 275} 276 277/* VESA BIOS calls */ 278static int 279vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 280{ 281 x86regs_t regs; 282 uint32_t offs; 283 void *buf; 284 285 buf = x86bios_alloc(&offs, sizeof(*vmode)); 286 if (buf == NULL) 287 return (1); 288 289 x86bios_init_regs(®s); 290 regs.R_AX = 0x4f01; 291 regs.R_CX = mode; 292 293 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 294 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 295 296 x86bios_intr(®s, 0x10); 297 298 if (regs.R_AX != 0x004f) { 299 x86bios_free(buf, sizeof(*vmode)); 300 return (1); 301 } 302 303 bcopy(buf, vmode, sizeof(*vmode)); 304 x86bios_free(buf, sizeof(*vmode)); 305 306 return (0); 307} 308 309static int 310vesa_bios_set_mode(int mode) 311{ 312 x86regs_t regs; 313 314 x86bios_init_regs(®s); 315 regs.R_AX = 0x4f02; 316 regs.R_BX = mode; 317 318 x86bios_intr(®s, 0x10); 319 320 return (regs.R_AX != 0x004f); 321} 322 323#if 0 324static int 325vesa_bios_get_dac(void) 326{ 327 x86regs_t regs; 328 329 x86bios_init_regs(®s); 330 regs.R_AX = 0x4f08; 331 regs.R_BL = 1; 332 333 x86bios_intr(®s, 0x10); 334 335 if (regs.R_AX != 0x004f) 336 return (6); 337 338 return (regs.R_BH); 339} 340#endif 341 342static int 343vesa_bios_set_dac(int bits) 344{ 345 x86regs_t regs; 346 347 x86bios_init_regs(®s); 348 regs.R_AX = 0x4f08; 349 /* regs.R_BL = 0; */ 350 regs.R_BH = bits; 351 352 x86bios_intr(®s, 0x10); 353 354 if (regs.R_AX != 0x004f) 355 return (6); 356 357 return (regs.R_BH); 358} 359 360static int 361vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 362{ 363 x86regs_t regs; 364 uint32_t offs; 365 u_char *p; 366 int i; 367 368 p = (u_char *)x86bios_alloc(&offs, colors * 4); 369 if (p == NULL) 370 return (1); 371 372 x86bios_init_regs(®s); 373 regs.R_AX = 0x4f09; 374 regs.R_BL = 1; 375 regs.R_CX = colors; 376 regs.R_DX = start; 377 378 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 379 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 380 381 x86bios_intr(®s, 0x10); 382 383 if (regs.R_AX != 0x004f) { 384 x86bios_free(p, colors * 4); 385 return (1); 386 } 387 388 bits = 8 - bits; 389 for (i = 0; i < colors; ++i) { 390 palette[i * 3] = p[i * 4 + 2] << bits; 391 palette[i * 3 + 1] = p[i * 4 + 1] << bits; 392 palette[i * 3 + 2] = p[i * 4] << bits; 393 } 394 x86bios_free(p, colors * 4); 395 396 return (0); 397} 398 399static int 400vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 401 int bits) 402{ 403 x86regs_t regs; 404 uint32_t offs; 405 u_char *p; 406 int i; 407 408 p = (u_char *)x86bios_alloc(&offs, colors * 4); 409 if (p == NULL) 410 return (1); 411 412 x86bios_init_regs(®s); 413 regs.R_AX = 0x4f09; 414 regs.R_BL = 1; 415 regs.R_CX = colors; 416 regs.R_DX = start; 417 418 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 419 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 420 421 x86bios_intr(®s, 0x10); 422 423 if (regs.R_AX != 0x004f) { 424 x86bios_free(p, colors * 4); 425 return (1); 426 } 427 428 bits = 8 - bits; 429 for (i = 0; i < colors; ++i) { 430 r[i] = p[i * 4 + 2] << bits; 431 g[i] = p[i * 4 + 1] << bits; 432 b[i] = p[i * 4] << bits; 433 } 434 x86bios_free(p, colors * 4); 435 436 return (0); 437} 438 439static int 440vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 441{ 442 x86regs_t regs; 443 uint32_t offs; 444 u_char *p; 445 int i; 446 447 p = (u_char *)x86bios_alloc(&offs, colors * 4); 448 if (p == NULL) 449 return (1); 450 451 x86bios_init_regs(®s); 452 regs.R_AX = 0x4f09; 453 /* regs.R_BL = 0; */ 454 regs.R_CX = colors; 455 regs.R_DX = start; 456 457 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 458 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 459 460 bits = 8 - bits; 461 for (i = 0; i < colors; ++i) { 462 p[i * 4] = palette[i * 3 + 2] >> bits; 463 p[i * 4 + 1] = palette[i * 3 + 1] >> bits; 464 p[i * 4 + 2] = palette[i * 3] >> bits; 465 p[i * 4 + 3] = 0; 466 } 467 x86bios_intr(®s, 0x10); 468 x86bios_free(p, colors * 4); 469 470 return (regs.R_AX != 0x004f); 471} 472 473static int 474vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 475 int bits) 476{ 477 x86regs_t regs; 478 uint32_t offs; 479 u_char *p; 480 int i; 481 482 p = (u_char *)x86bios_alloc(&offs, colors * 4); 483 if (p == NULL) 484 return (1); 485 486 x86bios_init_regs(®s); 487 regs.R_AX = 0x4f09; 488 /* regs.R_BL = 0; */ 489 regs.R_CX = colors; 490 regs.R_DX = start; 491 492 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 493 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 494 495 bits = 8 - bits; 496 for (i = 0; i < colors; ++i) { 497 p[i * 4] = b[i] >> bits; 498 p[i * 4 + 1] = g[i] >> bits; 499 p[i * 4 + 2] = r[i] >> bits; 500 p[i * 4 + 3] = 0; 501 } 502 x86bios_intr(®s, 0x10); 503 x86bios_free(p, colors * 4); 504 505 return (regs.R_AX != 0x004f); 506} 507 508static ssize_t 509vesa_bios_state_buf_size(void) 510{ 511 x86regs_t regs; 512 513 x86bios_init_regs(®s); 514 regs.R_AX = 0x4f04; 515 /* regs.R_DL = STATE_SIZE; */ 516 regs.R_CX = STATE_ALL; 517 518 x86bios_intr(®s, 0x10); 519 520 if (regs.R_AX != 0x004f) 521 return (0); 522 523 return (regs.R_BX * 64); 524} 525 526static int 527vesa_bios_save_restore(int code, void *p, size_t size) 528{ 529 x86regs_t regs; 530 uint32_t offs; 531 void *buf; 532 533 if (code != STATE_SAVE && code != STATE_LOAD) 534 return (1); 535 536 buf = x86bios_alloc(&offs, size); 537 538 x86bios_init_regs(®s); 539 regs.R_AX = 0x4f04; 540 regs.R_DL = code; 541 regs.R_CX = STATE_ALL; 542 543 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 544 regs.R_BX = X86BIOS_PHYSTOOFF(offs); 545 546 switch (code) { 547 case STATE_SAVE: 548 x86bios_intr(®s, 0x10); 549 bcopy(buf, p, size); 550 break; 551 case STATE_LOAD: 552 bcopy(p, buf, size); 553 x86bios_intr(®s, 0x10); 554 break; 555 } 556 x86bios_free(buf, size); 557 558 return (regs.R_AX != 0x004f); 559} 560 561#if 0 562static int 563vesa_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 580static int 581vesa_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 607static int 608vesa_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 628static int 629vesa_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 */ 645static int 646vesa_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 < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 660 if (mode_map[i].from == mode) 661 return (mode_map[i].to); 662 } 663 return (mode); 664} 665 666static int 667vesa_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 < sizeof(ftable)/sizeof(ftable[0]); ++i) { 683 flags |= (vflags & ftable[i].mask) ? 684 ftable[i].set : ftable[i].reset; 685 } 686 return (flags); 687} 688 689static int 690vesa_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#define VESA_MAXSTR 256 713 714#define VESA_STRCPY(dst, src) do { \ 715 char *str; \ 716 int i; \ 717 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 718 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 719 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 720 dst[i] = str[i]; \ 721 dst[i] = '\0'; \ 722} while (0) 723 724static int 725vesa_bios_init(void) 726{ 727 static struct vesa_info buf; 728 struct vesa_mode vmode; 729 video_info_t *p; 730 x86regs_t regs; 731 size_t bsize; 732 size_t msize; 733 void *vmbuf; 734 uint32_t offs; 735 uint16_t vers; 736 int bpsl; 737 int is_via_cle266; 738 int modes; 739 int i; 740 741 if (vesa_init_done) 742 return (0); 743 744 has_vesa_bios = FALSE; 745 vesa_adp_info = NULL; 746 vesa_vmode_max = 0; 747 vesa_vmode[0].vi_mode = EOT; 748 749 /* 750 * If the VBE real mode interrupt vector is not found, try BIOS POST. 751 */ 752 if (x86bios_get_intr(0x10) == 0) { 753 if (vesa_bios_post() != 0) 754 return (1); 755 if (bootverbose) { 756 offs = x86bios_get_intr(0x10); 757 printf("VESA: interrupt vector installed (0x%x)\n", 758 BIOS_SADDRTOLADDR(offs)); 759 } 760 } 761 762 x86bios_init_regs(®s); 763 regs.R_AX = 0x4f00; 764 765 vmbuf = x86bios_alloc(&offs, sizeof(buf)); 766 if (vmbuf == NULL) 767 return (1); 768 769 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 770 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 771 772 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 773 x86bios_intr(®s, 0x10); 774 775 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 776 goto fail; 777 778 bcopy(vmbuf, &buf, sizeof(buf)); 779 780 vesa_adp_info = &buf; 781 if (bootverbose) { 782 printf("VESA: information block\n"); 783 hexdump(&buf, sizeof(buf), NULL, HD_OMIT_CHARS); 784 } 785 786 vers = buf.v_version = le16toh(buf.v_version); 787 buf.v_oemstr = le32toh(buf.v_oemstr); 788 buf.v_flags = le32toh(buf.v_flags); 789 buf.v_modetable = le32toh(buf.v_modetable); 790 buf.v_memsize = le16toh(buf.v_memsize); 791 buf.v_revision = le16toh(buf.v_revision); 792 buf.v_venderstr = le32toh(buf.v_venderstr); 793 buf.v_prodstr = le32toh(buf.v_prodstr); 794 buf.v_revstr = le32toh(buf.v_revstr); 795 796 if (vers < 0x0102) { 797 printf("VESA: VBE version %d.%d is not supported; " 798 "version 1.2 or later is required.\n", 799 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 800 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 801 return (1); 802 } 803 804 VESA_STRCPY(vesa_oemstr, buf.v_oemstr); 805 if (vers >= 0x0200) { 806 VESA_STRCPY(vesa_venderstr, buf.v_venderstr); 807 VESA_STRCPY(vesa_prodstr, buf.v_prodstr); 808 VESA_STRCPY(vesa_revstr, buf.v_revstr); 809 } 810 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 811 sizeof(VESA_VIA_CLE266)) == 0; 812 813 if (buf.v_modetable == 0) 814 goto fail; 815 816 msize = (size_t)buf.v_memsize * 64 * 1024; 817 818 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf.v_modetable)); 819 820 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 821 (vesa_vmodetab[i] != 0xffff); ++i) { 822 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 823 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 824 continue; 825 826 vmode.v_modeattr = le16toh(vmode.v_modeattr); 827 vmode.v_wgran = le16toh(vmode.v_wgran); 828 vmode.v_wsize = le16toh(vmode.v_wsize); 829 vmode.v_waseg = le16toh(vmode.v_waseg); 830 vmode.v_wbseg = le16toh(vmode.v_wbseg); 831 vmode.v_posfunc = le32toh(vmode.v_posfunc); 832 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 833 vmode.v_width = le16toh(vmode.v_width); 834 vmode.v_height = le16toh(vmode.v_height); 835 vmode.v_lfb = le32toh(vmode.v_lfb); 836 vmode.v_offscreen = le32toh(vmode.v_offscreen); 837 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 838 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 839 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 840 841 /* reject unsupported modes */ 842#if 0 843 if ((vmode.v_modeattr & 844 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 845 (V_MODESUPP | V_MODEOPTINFO)) 846 continue; 847#else 848 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 849#if VESA_DEBUG > 1 850 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 851 " attr = %x\n", 852 vmode.v_modeattr & V_MODEGRAPHICS ? 853 "graphics" : "text", 854 vmode.v_width, vmode.v_height, vmode.v_bpp, 855 vmode.v_modeattr); 856#endif 857 continue; 858 } 859#endif 860 861 bpsl = (vmode.v_modeattr & V_MODELFB) != 0 && vers >= 0x0300 ? 862 vmode.v_linbpscanline : vmode.v_bpscanline; 863 bsize = bpsl * vmode.v_height; 864 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 865 bsize *= vmode.v_planes; 866 867 /* Does it have enough memory to support this mode? */ 868 if (msize < bsize) { 869#if VESA_DEBUG > 1 870 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 871 " attr = %x, not enough memory\n", 872 vmode.v_modeattr & V_MODEGRAPHICS ? 873 "graphics" : "text", 874 vmode.v_width, vmode.v_height, vmode.v_bpp, 875 vmode.v_modeattr); 876#endif 877 continue; 878 } 879 880 /* expand the array if necessary */ 881 if (modes >= vesa_vmode_max) { 882 vesa_vmode_max += MODE_TABLE_DELTA; 883 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 884 M_DEVBUF, M_WAITOK); 885#if VESA_DEBUG > 1 886 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 887 modes, vesa_vmode_max); 888#endif 889 if (modes > 0) { 890 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 891 free(vesa_vmode, M_DEVBUF); 892 } 893 vesa_vmode = p; 894 } 895 896#if VESA_DEBUG > 1 897 printf("Found VESA %s mode: %d x %d x %d bpp\n", 898 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 899 vmode.v_width, vmode.v_height, vmode.v_bpp); 900#endif 901 if (is_via_cle266) { 902 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 903 vmode.v_width &= 0xff; 904 vmode.v_waseg = 0xb8000 >> 4; 905 } 906 } 907 908 /* copy some fields */ 909 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 910 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 911 vesa_vmode[modes].vi_width = vmode.v_width; 912 vesa_vmode[modes].vi_height = vmode.v_height; 913 vesa_vmode[modes].vi_depth = vmode.v_bpp; 914 vesa_vmode[modes].vi_planes = vmode.v_planes; 915 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 916 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 917 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 918 /* XXX window B */ 919 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 920 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 921 if (vmode.v_modeattr & V_MODELFB) 922 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 923 vesa_vmode[modes].vi_buffer_size = bsize; 924 vesa_vmode[modes].vi_mem_model = 925 vesa_translate_mmodel(vmode.v_memmodel); 926 switch (vesa_vmode[modes].vi_mem_model) { 927 case V_INFO_MM_DIRECT: 928 if ((vmode.v_modeattr & V_MODELFB) != 0 && 929 vers >= 0x0300) { 930 vesa_vmode[modes].vi_pixel_fields[0] = 931 vmode.v_linredfieldpos; 932 vesa_vmode[modes].vi_pixel_fields[1] = 933 vmode.v_lingreenfieldpos; 934 vesa_vmode[modes].vi_pixel_fields[2] = 935 vmode.v_linbluefieldpos; 936 vesa_vmode[modes].vi_pixel_fields[3] = 937 vmode.v_linresfieldpos; 938 vesa_vmode[modes].vi_pixel_fsizes[0] = 939 vmode.v_linredmasksize; 940 vesa_vmode[modes].vi_pixel_fsizes[1] = 941 vmode.v_lingreenmasksize; 942 vesa_vmode[modes].vi_pixel_fsizes[2] = 943 vmode.v_linbluemasksize; 944 vesa_vmode[modes].vi_pixel_fsizes[3] = 945 vmode.v_linresmasksize; 946 } else { 947 vesa_vmode[modes].vi_pixel_fields[0] = 948 vmode.v_redfieldpos; 949 vesa_vmode[modes].vi_pixel_fields[1] = 950 vmode.v_greenfieldpos; 951 vesa_vmode[modes].vi_pixel_fields[2] = 952 vmode.v_bluefieldpos; 953 vesa_vmode[modes].vi_pixel_fields[3] = 954 vmode.v_resfieldpos; 955 vesa_vmode[modes].vi_pixel_fsizes[0] = 956 vmode.v_redmasksize; 957 vesa_vmode[modes].vi_pixel_fsizes[1] = 958 vmode.v_greenmasksize; 959 vesa_vmode[modes].vi_pixel_fsizes[2] = 960 vmode.v_bluemasksize; 961 vesa_vmode[modes].vi_pixel_fsizes[3] = 962 vmode.v_resmasksize; 963 } 964 /* FALLTHROUGH */ 965 case V_INFO_MM_PACKED: 966 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 967 break; 968 } 969 vesa_vmode[modes].vi_flags = 970 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 971 972 ++modes; 973 } 974 vesa_vmode[modes].vi_mode = EOT; 975 976 if (bootverbose) 977 printf("VESA: %d mode(s) found\n", modes); 978 979 has_vesa_bios = (modes > 0); 980 if (!has_vesa_bios) 981 goto fail; 982 983 x86bios_free(vmbuf, sizeof(buf)); 984 return (0); 985 986fail: 987 if (vmbuf != NULL) 988 x86bios_free(vmbuf, sizeof(buf)); 989 if (vesa_oemstr != NULL) { 990 free(vesa_oemstr, M_DEVBUF); 991 vesa_oemstr = NULL; 992 } 993 if (vesa_venderstr != NULL) { 994 free(vesa_venderstr, M_DEVBUF); 995 vesa_venderstr = NULL; 996 } 997 if (vesa_prodstr != NULL) { 998 free(vesa_prodstr, M_DEVBUF); 999 vesa_prodstr = NULL; 1000 } 1001 if (vesa_revstr != NULL) { 1002 free(vesa_revstr, M_DEVBUF); 1003 vesa_revstr = NULL; 1004 } 1005 return (1); 1006} 1007 1008static void 1009vesa_clear_modes(video_info_t *info, int color) 1010{ 1011 while (info->vi_mode != EOT) { 1012 if ((info->vi_flags & V_INFO_COLOR) != color) 1013 info->vi_mode = NA; 1014 ++info; 1015 } 1016} 1017 1018/* entry points */ 1019 1020static int 1021vesa_configure(int flags) 1022{ 1023 video_adapter_t *adp; 1024 int adapters; 1025 int error; 1026 int i; 1027 1028 if (vesa_init_done) 1029 return (0); 1030 if (flags & VIO_PROBE_ONLY) 1031 return (0); 1032 1033 /* 1034 * If the VESA module has already been loaded, abort loading 1035 * the module this time. 1036 */ 1037 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1038 if (adp->va_flags & V_ADP_VESA) 1039 return (ENXIO); 1040 if (adp->va_type == KD_VGA) 1041 break; 1042 } 1043 1044 /* 1045 * The VGA adapter is not found. This is because either 1046 * 1) the VGA driver has not been initialized, or 2) the VGA card 1047 * is not present. If 1) is the case, we shall defer 1048 * initialization for now and try again later. 1049 */ 1050 if (adp == NULL) { 1051 vga_sub_configure = vesa_configure; 1052 return (ENODEV); 1053 } 1054 1055 /* count number of registered adapters */ 1056 for (++i; vid_get_adapter(i) != NULL; ++i) 1057 ; 1058 adapters = i; 1059 1060 /* call VESA BIOS */ 1061 vesa_adp = adp; 1062 if (vesa_bios_init()) { 1063 vesa_adp = NULL; 1064 return (ENXIO); 1065 } 1066 vesa_adp->va_flags |= V_ADP_VESA; 1067 1068 /* remove conflicting modes if we have more than one adapter */ 1069 if (adapters > 1) { 1070 vesa_clear_modes(vesa_vmode, 1071 (vesa_adp->va_flags & V_ADP_COLOR) ? 1072 V_INFO_COLOR : 0); 1073 } 1074 1075 if ((error = vesa_load_ioctl()) == 0) { 1076 prevvidsw = vidsw[vesa_adp->va_index]; 1077 vidsw[vesa_adp->va_index] = &vesavidsw; 1078 vesa_init_done = TRUE; 1079 } else { 1080 vesa_adp = NULL; 1081 return (error); 1082 } 1083 1084 return (0); 1085} 1086 1087#if 0 1088static int 1089vesa_nop(void) 1090{ 1091 1092 return (0); 1093} 1094#endif 1095 1096static int 1097vesa_error(void) 1098{ 1099 1100 return (1); 1101} 1102 1103static int 1104vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1105{ 1106 1107 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1108} 1109 1110static int 1111vesa_init(int unit, video_adapter_t *adp, int flags) 1112{ 1113 1114 return ((*prevvidsw->init)(unit, adp, flags)); 1115} 1116 1117static int 1118vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1119{ 1120 int i; 1121 1122 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1123 return (0); 1124 1125 if (adp != vesa_adp) 1126 return (1); 1127 1128 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1129 vesa_adp->va_flags & V_ADP_COLOR, mode); 1130 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1131 if (vesa_vmode[i].vi_mode == NA) 1132 continue; 1133 if (vesa_vmode[i].vi_mode == mode) { 1134 *info = vesa_vmode[i]; 1135 return (0); 1136 } 1137 } 1138 return (1); 1139} 1140 1141static int 1142vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1143{ 1144 int i; 1145 1146 if ((*prevvidsw->query_mode)(adp, info) == 0) 1147 return (0); 1148 if (adp != vesa_adp) 1149 return (ENODEV); 1150 1151 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1152 if ((info->vi_width != 0) 1153 && (info->vi_width != vesa_vmode[i].vi_width)) 1154 continue; 1155 if ((info->vi_height != 0) 1156 && (info->vi_height != vesa_vmode[i].vi_height)) 1157 continue; 1158 if ((info->vi_cwidth != 0) 1159 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1160 continue; 1161 if ((info->vi_cheight != 0) 1162 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1163 continue; 1164 if ((info->vi_depth != 0) 1165 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1166 continue; 1167 if ((info->vi_planes != 0) 1168 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1169 continue; 1170 /* pixel format, memory model */ 1171 if ((info->vi_flags != 0) 1172 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1173 continue; 1174 *info = vesa_vmode[i]; 1175 return (0); 1176 } 1177 return (ENODEV); 1178} 1179 1180static int 1181vesa_set_mode(video_adapter_t *adp, int mode) 1182{ 1183 video_info_t info; 1184 1185 if (adp != vesa_adp) 1186 return ((*prevvidsw->set_mode)(adp, mode)); 1187 1188 mode = vesa_map_gen_mode_num(adp->va_type, 1189 adp->va_flags & V_ADP_COLOR, mode); 1190#if VESA_DEBUG > 0 1191 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1192 adp->va_mode, adp->va_mode, mode, mode); 1193#endif 1194 /* 1195 * If the current mode is a VESA mode and the new mode is not, 1196 * restore the state of the adapter first by setting one of the 1197 * standard VGA mode, so that non-standard, extended SVGA registers 1198 * are set to the state compatible with the standard VGA modes. 1199 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1200 * the new mode correctly. 1201 */ 1202 if (VESA_MODE(adp->va_mode)) { 1203 if (!VESA_MODE(mode) && 1204 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1205 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1206 vesa_bios_set_dac(6); 1207 adp->va_flags &= ~V_ADP_DAC8; 1208 } 1209 int10_set_mode(adp->va_initial_bios_mode); 1210 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1211 pmap_unmapdev(adp->va_buffer, 1212 vesa_adp_info->v_memsize * 64 * 1024); 1213 /* 1214 * Once (*prevvidsw->get_info)() succeeded, 1215 * (*prevvidsw->set_mode)() below won't fail... 1216 */ 1217 } 1218 } 1219 1220 /* we may not need to handle this mode after all... */ 1221 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1222 return (0); 1223 1224 /* is the new mode supported? */ 1225 if (vesa_get_info(adp, mode, &info)) 1226 return (1); 1227 /* assert(VESA_MODE(mode)); */ 1228 1229#if VESA_DEBUG > 0 1230 printf("VESA: about to set a VESA mode...\n"); 1231#endif 1232 /* don't use the linear frame buffer for text modes. XXX */ 1233 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1234 info.vi_flags &= ~V_INFO_LINEAR; 1235 1236 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1237 return (1); 1238 1239 /* Palette format is reset by the above VBE function call. */ 1240 adp->va_flags &= ~V_ADP_DAC8; 1241 1242 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1243 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1244 (info.vi_flags & V_INFO_NONVGA) != 0 && 1245 vesa_bios_set_dac(8) > 6) 1246 adp->va_flags |= V_ADP_DAC8; 1247 1248 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1249 pmap_unmapdev(adp->va_buffer, 1250 vesa_adp_info->v_memsize * 64 * 1024); 1251 1252#if VESA_DEBUG > 0 1253 printf("VESA: mode set!\n"); 1254#endif 1255 vesa_adp->va_mode = mode; 1256 vesa_adp->va_flags &= ~V_ADP_COLOR; 1257 vesa_adp->va_flags |= 1258 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1259 vesa_adp->va_crtc_addr = 1260 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1261 if (info.vi_flags & V_INFO_LINEAR) { 1262#if VESA_DEBUG > 1 1263 printf("VESA: setting up LFB\n"); 1264#endif 1265 vesa_adp->va_buffer = 1266 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1267 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING); 1268 vesa_adp->va_window = vesa_adp->va_buffer; 1269 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1270 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1271 } else { 1272 vesa_adp->va_buffer = 0; 1273 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1274 vesa_adp->va_window_size = info.vi_window_size; 1275 vesa_adp->va_window_gran = info.vi_window_gran; 1276 } 1277 vesa_adp->va_buffer_size = info.vi_buffer_size; 1278 vesa_adp->va_window_orig = 0; 1279 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1280 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1281 vesa_adp->va_line_width /= info.vi_planes; 1282 vesa_adp->va_disp_start.x = 0; 1283 vesa_adp->va_disp_start.y = 0; 1284#if VESA_DEBUG > 0 1285 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1286 info.vi_width, vesa_adp->va_line_width); 1287#endif 1288 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1289 1290 /* move hardware cursor out of the way */ 1291 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1292 1293 return (0); 1294} 1295 1296static int 1297vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1298 u_char *data, int ch, int count) 1299{ 1300 1301 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1302 ch, count)); 1303} 1304 1305static int 1306vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1307 u_char *data, int ch, int count) 1308{ 1309 1310 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1311 ch, count)); 1312} 1313 1314static int 1315vesa_show_font(video_adapter_t *adp, int page) 1316{ 1317 1318 return ((*prevvidsw->show_font)(adp, page)); 1319} 1320 1321static int 1322vesa_save_palette(video_adapter_t *adp, u_char *palette) 1323{ 1324 int bits; 1325 1326 if (adp == vesa_adp && VESA_MODE(adp->va_mode) && 1327 (adp->va_info.vi_flags & V_INFO_NONVGA) != 0) { 1328 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1329 return (vesa_bios_save_palette(0, 256, palette, bits)); 1330 } 1331 1332 return ((*prevvidsw->save_palette)(adp, palette)); 1333} 1334 1335static int 1336vesa_load_palette(video_adapter_t *adp, u_char *palette) 1337{ 1338 int bits; 1339 1340 if (adp == vesa_adp && VESA_MODE(adp->va_mode) && 1341 (adp->va_info.vi_flags & V_INFO_NONVGA) != 0) { 1342 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1343 return (vesa_bios_load_palette(0, 256, palette, bits)); 1344 } 1345 1346 return ((*prevvidsw->load_palette)(adp, palette)); 1347} 1348 1349static int 1350vesa_set_border(video_adapter_t *adp, int color) 1351{ 1352 1353 return ((*prevvidsw->set_border)(adp, color)); 1354} 1355 1356static int 1357vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1358{ 1359 1360 if (adp != vesa_adp) 1361 return ((*prevvidsw->save_state)(adp, p, size)); 1362 1363 if (vesa_state_buf_size == -1) { 1364 vesa_state_buf_size = vesa_bios_state_buf_size(); 1365 if (vesa_state_buf_size == 0) 1366 return (1); 1367 } 1368 if (size == 0) 1369 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1370 else if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1371 return (1); 1372 1373 ((adp_state_t *)p)->sig = V_STATE_SIG; 1374 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1375 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1376 vesa_state_buf_size)); 1377} 1378 1379static int 1380vesa_load_state(video_adapter_t *adp, void *p) 1381{ 1382 1383 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1384 return ((*prevvidsw->load_state)(adp, p)); 1385 1386 if (vesa_state_buf_size <= 0) 1387 return (1); 1388 1389 /* Try BIOS POST to restore a sane state. */ 1390 (void)vesa_bios_post(); 1391 (void)int10_set_mode(adp->va_initial_bios_mode); 1392 1393 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1394 vesa_state_buf_size)); 1395} 1396 1397#if 0 1398static int 1399vesa_get_origin(video_adapter_t *adp, off_t *offset) 1400{ 1401 x86regs_t regs; 1402 1403 x86bios_init_regs(®s); 1404 regs.R_AX = 0x4f05; 1405 regs.R_BL = 0x10; 1406 1407 x86bios_intr(®s, 0x10); 1408 1409 if (regs.R_AX != 0x004f) 1410 return (1); 1411 *offset = regs.DX * adp->va_window_gran; 1412 1413 return (0); 1414} 1415#endif 1416 1417static int 1418vesa_set_origin(video_adapter_t *adp, off_t offset) 1419{ 1420 x86regs_t regs; 1421 1422 /* 1423 * This function should return as quickly as possible to 1424 * maintain good performance of the system. For this reason, 1425 * error checking is kept minimal and let the VESA BIOS to 1426 * detect error. 1427 */ 1428 if (adp != vesa_adp) 1429 return ((*prevvidsw->set_win_org)(adp, offset)); 1430 1431 /* if this is a linear frame buffer, do nothing */ 1432 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1433 return (0); 1434 /* XXX */ 1435 if (adp->va_window_gran == 0) 1436 return (1); 1437 1438 x86bios_init_regs(®s); 1439 regs.R_AX = 0x4f05; 1440 regs.R_DX = offset / adp->va_window_gran; 1441 1442 x86bios_intr(®s, 0x10); 1443 1444 if (regs.R_AX != 0x004f) 1445 return (1); 1446 1447 x86bios_init_regs(®s); 1448 regs.R_AX = 0x4f05; 1449 regs.R_BL = 1; 1450 regs.R_DX = offset / adp->va_window_gran; 1451 x86bios_intr(®s, 0x10); 1452 1453 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1454 return (0); /* XXX */ 1455} 1456 1457static int 1458vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1459{ 1460 1461 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1462} 1463 1464static int 1465vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1466{ 1467 1468 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1469} 1470 1471static int 1472vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1473 int celsize, int blink) 1474{ 1475 1476 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1477 blink)); 1478} 1479 1480static int 1481vesa_blank_display(video_adapter_t *adp, int mode) 1482{ 1483 1484 /* XXX: use VESA DPMS */ 1485 return ((*prevvidsw->blank_display)(adp, mode)); 1486} 1487 1488static int 1489vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1490 int prot, vm_memattr_t *memattr) 1491{ 1492 1493#if VESA_DEBUG > 0 1494 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1495 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1496#endif 1497 1498 if ((adp == vesa_adp) && 1499 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1500 /* va_window_size == va_buffer_size/vi_planes */ 1501 /* XXX: is this correct? */ 1502 if (offset > adp->va_window_size - PAGE_SIZE) 1503 return (-1); 1504 *paddr = adp->va_info.vi_buffer + offset; 1505 return (0); 1506 } 1507 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1508} 1509 1510static int 1511vesa_clear(video_adapter_t *adp) 1512{ 1513 1514 return ((*prevvidsw->clear)(adp)); 1515} 1516 1517static int 1518vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1519{ 1520 1521 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1522} 1523 1524static int 1525vesa_bitblt(video_adapter_t *adp,...) 1526{ 1527 1528 /* FIXME */ 1529 return (1); 1530} 1531 1532static int 1533get_palette(video_adapter_t *adp, int base, int count, 1534 u_char *red, u_char *green, u_char *blue, u_char *trans) 1535{ 1536 u_char *r; 1537 u_char *g; 1538 u_char *b; 1539 int bits; 1540 int error; 1541 1542 if (base < 0 || base >= 256 || count < 0 || count > 256) 1543 return (1); 1544 if ((base + count) > 256) 1545 return (1); 1546 if (!VESA_MODE(adp->va_mode)) 1547 return (1); 1548 if ((adp->va_info.vi_flags & V_INFO_NONVGA) == 0) 1549 return (1); 1550 1551 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1552 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1553 g = r + count; 1554 b = g + count; 1555 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1556 if (error == 0) { 1557 copyout(r, red, count); 1558 copyout(g, green, count); 1559 copyout(b, blue, count); 1560 if (trans != NULL) { 1561 bzero(r, count); 1562 copyout(r, trans, count); 1563 } 1564 } 1565 free(r, M_DEVBUF); 1566 1567 return (error); 1568} 1569 1570static int 1571set_palette(video_adapter_t *adp, int base, int count, 1572 u_char *red, u_char *green, u_char *blue, u_char *trans) 1573{ 1574 u_char *r; 1575 u_char *g; 1576 u_char *b; 1577 int bits; 1578 int error; 1579 1580 if (base < 0 || base >= 256 || count < 0 || count > 256) 1581 return (1); 1582 if ((base + count) > 256) 1583 return (1); 1584 if (!VESA_MODE(adp->va_mode)) 1585 return (1); 1586 if ((adp->va_info.vi_flags & V_INFO_NONVGA) == 0) 1587 return (1); 1588 1589 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1590 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1591 g = r + count; 1592 b = g + count; 1593 copyin(red, r, count); 1594 copyin(green, g, count); 1595 copyin(blue, b, count); 1596 1597 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1598 free(r, M_DEVBUF); 1599 1600 return (error); 1601} 1602 1603static int 1604vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1605{ 1606 int bytes; 1607 1608 if (adp != vesa_adp) 1609 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1610 1611 switch (cmd) { 1612 case FBIO_SETWINORG: /* set frame buffer window origin */ 1613 if (!VESA_MODE(adp->va_mode)) 1614 return (*prevvidsw->ioctl)(adp, cmd, arg); 1615 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1616 1617 case FBIO_SETDISPSTART: /* set display start address */ 1618 if (!VESA_MODE(adp->va_mode)) 1619 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1620 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1621 ((video_display_start_t *)arg)->y)) 1622 return (ENODEV); 1623 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1624 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1625 return (0); 1626 1627 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1628 if (!VESA_MODE(adp->va_mode)) 1629 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1630 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1631 return (ENODEV); 1632 adp->va_line_width = bytes; 1633#if VESA_DEBUG > 1 1634 printf("new line width:%d\n", adp->va_line_width); 1635#endif 1636 return (0); 1637 1638 case FBIO_GETPALETTE: /* get color palette */ 1639 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1640 ((video_color_palette_t *)arg)->count, 1641 ((video_color_palette_t *)arg)->red, 1642 ((video_color_palette_t *)arg)->green, 1643 ((video_color_palette_t *)arg)->blue, 1644 ((video_color_palette_t *)arg)->transparent)) 1645 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1646 return (0); 1647 1648 1649 case FBIO_SETPALETTE: /* set color palette */ 1650 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1651 ((video_color_palette_t *)arg)->count, 1652 ((video_color_palette_t *)arg)->red, 1653 ((video_color_palette_t *)arg)->green, 1654 ((video_color_palette_t *)arg)->blue, 1655 ((video_color_palette_t *)arg)->transparent)) 1656 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1657 return (0); 1658 1659 case FBIOGETCMAP: /* get color palette */ 1660 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1661 ((struct fbcmap *)arg)->count, 1662 ((struct fbcmap *)arg)->red, 1663 ((struct fbcmap *)arg)->green, 1664 ((struct fbcmap *)arg)->blue, NULL)) 1665 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1666 return (0); 1667 1668 case FBIOPUTCMAP: /* set color palette */ 1669 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1670 ((struct fbcmap *)arg)->count, 1671 ((struct fbcmap *)arg)->red, 1672 ((struct fbcmap *)arg)->green, 1673 ((struct fbcmap *)arg)->blue, NULL)) 1674 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1675 return (0); 1676 1677 default: 1678 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1679 } 1680} 1681 1682static int 1683vesa_diag(video_adapter_t *adp, int level) 1684{ 1685 int error; 1686 1687 /* call the previous handler first */ 1688 error = (*prevvidsw->diag)(adp, level); 1689 if (error) 1690 return (error); 1691 1692 if (adp != vesa_adp) 1693 return (1); 1694 1695 if (level <= 0) 1696 return (0); 1697 1698 return (0); 1699} 1700 1701static int 1702vesa_bios_info(int level) 1703{ 1704#if VESA_DEBUG > 1 1705 struct vesa_mode vmode; 1706 int i; 1707#endif 1708 uint16_t vers; 1709 1710 vers = vesa_adp_info->v_version; 1711 1712 if (bootverbose) { 1713 /* general adapter information */ 1714 printf( 1715 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1716 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1717 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1718 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1719 vesa_vmodetab, vesa_adp_info->v_modetable); 1720 1721 /* OEM string */ 1722 if (vesa_oemstr != NULL) 1723 printf("VESA: %s\n", vesa_oemstr); 1724 } 1725 1726 if (level <= 0) 1727 return (0); 1728 1729 if (vers >= 0x0200 && bootverbose) { 1730 /* vender name, product name, product revision */ 1731 printf("VESA: %s %s %s\n", 1732 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1733 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1734 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1735 } 1736 1737#if VESA_DEBUG > 1 1738 /* mode information */ 1739 for (i = 0; 1740 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1741 && (vesa_vmodetab[i] != 0xffff); ++i) { 1742 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1743 continue; 1744 1745 /* print something for diagnostic purpose */ 1746 printf("VESA: mode:0x%03x, flags:0x%04x", 1747 vesa_vmodetab[i], vmode.v_modeattr); 1748 if (vmode.v_modeattr & V_MODEOPTINFO) { 1749 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1750 printf(", G %dx%dx%d %d, ", 1751 vmode.v_width, vmode.v_height, 1752 vmode.v_bpp, vmode.v_planes); 1753 } else { 1754 printf(", T %dx%d, ", 1755 vmode.v_width, vmode.v_height); 1756 } 1757 printf("font:%dx%d, ", 1758 vmode.v_cwidth, vmode.v_cheight); 1759 printf("pages:%d, mem:%d", 1760 vmode.v_ipages + 1, vmode.v_memmodel); 1761 } 1762 if (vmode.v_modeattr & V_MODELFB) { 1763 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1764 vmode.v_lfb, vmode.v_offscreen, 1765 vmode.v_offscreensize*1024); 1766 } 1767 printf("\n"); 1768 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1769 vmode.v_waseg, vmode.v_waattr, 1770 vmode.v_wbseg, vmode.v_wbattr); 1771 printf("size:%dk, gran:%dk\n", 1772 vmode.v_wsize, vmode.v_wgran); 1773 } 1774#endif /* VESA_DEBUG > 1 */ 1775 1776 return (0); 1777} 1778 1779/* module loading */ 1780 1781static int 1782vesa_load(void) 1783{ 1784 int error; 1785 int s; 1786 1787 if (vesa_init_done) 1788 return (0); 1789 1790 /* locate a VGA adapter */ 1791 s = spltty(); 1792 vesa_adp = NULL; 1793 error = vesa_configure(0); 1794 splx(s); 1795 1796 if (error == 0) 1797 vesa_bios_info(bootverbose); 1798 1799 return (error); 1800} 1801 1802static int 1803vesa_unload(void) 1804{ 1805 u_char palette[256*3]; 1806 int error; 1807 int s; 1808 1809 /* if the adapter is currently in a VESA mode, don't unload */ 1810 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1811 return (EBUSY); 1812 /* 1813 * FIXME: if there is at least one vty which is in a VESA mode, 1814 * we shouldn't be unloading! XXX 1815 */ 1816 1817 s = spltty(); 1818 if ((error = vesa_unload_ioctl()) == 0) { 1819 if (vesa_adp != NULL) { 1820 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1821 vesa_bios_save_palette(0, 256, palette, 8); 1822 vesa_bios_set_dac(6); 1823 vesa_adp->va_flags &= ~V_ADP_DAC8; 1824 vesa_bios_load_palette(0, 256, palette, 6); 1825 } 1826 vesa_adp->va_flags &= ~V_ADP_VESA; 1827 vidsw[vesa_adp->va_index] = prevvidsw; 1828 } 1829 } 1830 splx(s); 1831 1832 if (vesa_oemstr != NULL) 1833 free(vesa_oemstr, M_DEVBUF); 1834 if (vesa_venderstr != NULL) 1835 free(vesa_venderstr, M_DEVBUF); 1836 if (vesa_prodstr != NULL) 1837 free(vesa_prodstr, M_DEVBUF); 1838 if (vesa_revstr != NULL) 1839 free(vesa_revstr, M_DEVBUF); 1840 if (vesa_vmode != &vesa_vmode_empty) 1841 free(vesa_vmode, M_DEVBUF); 1842 return (error); 1843} 1844 1845static int 1846vesa_mod_event(module_t mod, int type, void *data) 1847{ 1848 1849 switch (type) { 1850 case MOD_LOAD: 1851 return (vesa_load()); 1852 case MOD_UNLOAD: 1853 return (vesa_unload()); 1854 } 1855 return (EOPNOTSUPP); 1856} 1857 1858static moduledata_t vesa_mod = { 1859 "vesa", 1860 vesa_mod_event, 1861 NULL, 1862}; 1863 1864DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1865MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1866 1867#endif /* VGA_NO_MODE_CHANGE */ 1868