vesa.c revision 205653
1/*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * Copyright (c) 2009-2010 Jung-uk Kim <jkim@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer as 11 * the first lines of this file unmodified. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: head/sys/dev/fb/vesa.c 205653 2010-03-25 17:51:05Z jkim $"); 30 31#include "opt_vga.h" 32#include "opt_vesa.h" 33 34#ifndef VGA_NO_MODE_CHANGE 35 36#include <sys/param.h> 37#include <sys/bus.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/module.h> 41#include <sys/malloc.h> 42#include <sys/fbio.h> 43 44#include <vm/vm.h> 45#include <vm/vm_extern.h> 46#include <vm/vm_kern.h> 47#include <vm/vm_param.h> 48#include <vm/pmap.h> 49 50#include <machine/pc/bios.h> 51#include <dev/fb/vesa.h> 52 53#include <dev/fb/fbreg.h> 54#include <dev/fb/vgareg.h> 55 56#include <dev/pci/pcivar.h> 57 58#include <isa/isareg.h> 59 60#include <compat/x86bios/x86bios.h> 61 62#define VESA_VIA_CLE266 "VIA CLE266\r\n" 63 64#ifndef VESA_DEBUG 65#define VESA_DEBUG 0 66#endif 67 68/* VESA video adapter state buffer stub */ 69struct adp_state { 70 int sig; 71#define V_STATE_SIG 0x61736576 72 u_char regs[1]; 73}; 74typedef struct adp_state adp_state_t; 75 76/* VESA video adapter */ 77static video_adapter_t *vesa_adp = NULL; 78static ssize_t vesa_state_buf_size = -1; 79 80/* VESA functions */ 81#if 0 82static int vesa_nop(void); 83#endif 84static int vesa_error(void); 85static vi_probe_t vesa_probe; 86static vi_init_t vesa_init; 87static vi_get_info_t vesa_get_info; 88static vi_query_mode_t vesa_query_mode; 89static vi_set_mode_t vesa_set_mode; 90static vi_save_font_t vesa_save_font; 91static vi_load_font_t vesa_load_font; 92static vi_show_font_t vesa_show_font; 93static vi_save_palette_t vesa_save_palette; 94static vi_load_palette_t vesa_load_palette; 95static vi_set_border_t vesa_set_border; 96static vi_save_state_t vesa_save_state; 97static vi_load_state_t vesa_load_state; 98static vi_set_win_org_t vesa_set_origin; 99static vi_read_hw_cursor_t vesa_read_hw_cursor; 100static vi_set_hw_cursor_t vesa_set_hw_cursor; 101static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 102static vi_blank_display_t vesa_blank_display; 103static vi_mmap_t vesa_mmap; 104static vi_ioctl_t vesa_ioctl; 105static vi_clear_t vesa_clear; 106static vi_fill_rect_t vesa_fill_rect; 107static vi_bitblt_t vesa_bitblt; 108static vi_diag_t vesa_diag; 109static int vesa_bios_info(int level); 110 111static video_switch_t vesavidsw = { 112 vesa_probe, 113 vesa_init, 114 vesa_get_info, 115 vesa_query_mode, 116 vesa_set_mode, 117 vesa_save_font, 118 vesa_load_font, 119 vesa_show_font, 120 vesa_save_palette, 121 vesa_load_palette, 122 vesa_set_border, 123 vesa_save_state, 124 vesa_load_state, 125 vesa_set_origin, 126 vesa_read_hw_cursor, 127 vesa_set_hw_cursor, 128 vesa_set_hw_cursor_shape, 129 vesa_blank_display, 130 vesa_mmap, 131 vesa_ioctl, 132 vesa_clear, 133 vesa_fill_rect, 134 vesa_bitblt, 135 vesa_error, 136 vesa_error, 137 vesa_diag, 138}; 139 140static video_switch_t *prevvidsw; 141 142/* VESA BIOS video modes */ 143#define VESA_MAXMODES 64 144#define EOT (-1) 145#define NA (-2) 146 147#define MODE_TABLE_DELTA 8 148 149static int vesa_vmode_max = 0; 150static video_info_t vesa_vmode_empty = { EOT }; 151static video_info_t *vesa_vmode = &vesa_vmode_empty; 152 153static int vesa_init_done = FALSE; 154static int has_vesa_bios = FALSE; 155static struct vesa_info *vesa_adp_info = NULL; 156static u_int16_t *vesa_vmodetab = NULL; 157static char *vesa_oemstr = NULL; 158static char *vesa_venderstr = NULL; 159static char *vesa_prodstr = NULL; 160static char *vesa_revstr = NULL; 161 162/* local macros and functions */ 163#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 164 165static int int10_set_mode(int mode); 166static int vesa_bios_post(void); 167static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 168static int vesa_bios_set_mode(int mode); 169#if 0 170static int vesa_bios_get_dac(void); 171#endif 172static int vesa_bios_set_dac(int bits); 173static int vesa_bios_save_palette(int start, int colors, u_char *palette, 174 int bits); 175static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 176 u_char *b, int bits); 177static int vesa_bios_load_palette(int start, int colors, u_char *palette, 178 int bits); 179static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 180 u_char *b, int bits); 181#define STATE_SIZE 0 182#define STATE_SAVE 1 183#define STATE_LOAD 2 184#define STATE_HW (1<<0) 185#define STATE_DATA (1<<1) 186#define STATE_DAC (1<<2) 187#define STATE_REG (1<<3) 188#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 189#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 190static ssize_t vesa_bios_state_buf_size(void); 191static int vesa_bios_save_restore(int code, void *p, size_t size); 192#ifdef MODE_TABLE_BROKEN 193static int vesa_bios_get_line_length(void); 194#endif 195static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 196#if 0 197static int vesa_bios_get_start(int *x, int *y); 198#endif 199static int vesa_bios_set_start(int x, int y); 200static int vesa_map_gen_mode_num(int type, int color, int mode); 201static int vesa_translate_flags(u_int16_t vflags); 202static int vesa_translate_mmodel(u_int8_t vmodel); 203static int vesa_get_bpscanline(struct vesa_mode *vmode); 204static int vesa_bios_init(void); 205static void vesa_clear_modes(video_info_t *info, int color); 206 207#if 0 208static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 209#endif 210 211/* INT 10 BIOS calls */ 212static int 213int10_set_mode(int mode) 214{ 215 x86regs_t regs; 216 217 x86bios_init_regs(®s); 218 regs.R_AL = mode; 219 220 x86bios_intr(®s, 0x10); 221 222 return (0); 223} 224 225static int 226vesa_bios_post(void) 227{ 228 x86regs_t regs; 229 devclass_t dc; 230 device_t *devs; 231 device_t dev; 232 int count, i, is_pci; 233 234 if (x86bios_get_orm(0xc0000) == NULL) 235 return (1); 236 237 dev = NULL; 238 is_pci = 0; 239 240 /* Find the matching PCI video controller. */ 241 dc = devclass_find("vgapci"); 242 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 243 for (dev = NULL, i = 0; dev == NULL && i < count; devs++, i++) 244 if (device_get_flags(*devs) != 0 && 245 x86bios_match_device(0xc0000, *devs)) { 246 dev = *devs; 247 is_pci = 1; 248 break; 249 } 250 free(devs, M_TEMP); 251 } 252 253 /* Try VGA if a PCI device is not found. */ 254 if (dev == NULL) { 255 dc = devclass_find(VGA_DRIVER_NAME); 256 if (dc != NULL) 257 dev = devclass_get_device(dc, 0); 258 } 259 260 if (bootverbose) 261 printf("%s: calling BIOS POST\n", 262 dev == NULL ? "VESA" : device_get_nameunit(dev)); 263 264 x86bios_init_regs(®s); 265 if (is_pci) { 266 regs.R_AH = pci_get_bus(dev); 267 regs.R_AL = (pci_get_slot(dev) << 3) | 268 (pci_get_function(dev) & 0x07); 269 } 270 regs.R_DL = 0x80; 271 x86bios_call(®s, 0xc000, 0x0003); 272 273 if (x86bios_get_intr(0x10) == 0) 274 return (1); 275 276 return (0); 277} 278 279/* VESA BIOS calls */ 280static int 281vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 282{ 283 x86regs_t regs; 284 uint32_t offs; 285 void *buf; 286 287 buf = x86bios_alloc(&offs, sizeof(*vmode)); 288 if (buf == NULL) 289 return (1); 290 291 x86bios_init_regs(®s); 292 regs.R_AX = 0x4f01; 293 regs.R_CX = mode; 294 295 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 296 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 297 298 x86bios_intr(®s, 0x10); 299 300 if (regs.R_AX != 0x004f) { 301 x86bios_free(buf, sizeof(*vmode)); 302 return (1); 303 } 304 305 bcopy(buf, vmode, sizeof(*vmode)); 306 x86bios_free(buf, sizeof(*vmode)); 307 308 return (0); 309} 310 311static int 312vesa_bios_set_mode(int mode) 313{ 314 x86regs_t regs; 315 316 x86bios_init_regs(®s); 317 regs.R_AX = 0x4f02; 318 regs.R_BX = mode; 319 320 x86bios_intr(®s, 0x10); 321 322 return (regs.R_AX != 0x004f); 323} 324 325#if 0 326static int 327vesa_bios_get_dac(void) 328{ 329 x86regs_t regs; 330 331 x86bios_init_regs(®s); 332 regs.R_AX = 0x4f08; 333 regs.R_BL = 1; 334 335 x86bios_intr(®s, 0x10); 336 337 if (regs.R_AX != 0x004f) 338 return (6); 339 340 return (regs.R_BH); 341} 342#endif 343 344static int 345vesa_bios_set_dac(int bits) 346{ 347 x86regs_t regs; 348 349 x86bios_init_regs(®s); 350 regs.R_AX = 0x4f08; 351 /* regs.R_BL = 0; */ 352 regs.R_BH = bits; 353 354 x86bios_intr(®s, 0x10); 355 356 if (regs.R_AX != 0x004f) 357 return (6); 358 359 return (regs.R_BH); 360} 361 362static int 363vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 364{ 365 x86regs_t regs; 366 uint32_t offs; 367 u_char *p; 368 int i; 369 370 p = (u_char *)x86bios_alloc(&offs, colors * 4); 371 if (p == NULL) 372 return (1); 373 374 x86bios_init_regs(®s); 375 regs.R_AX = 0x4f09; 376 regs.R_BL = 1; 377 regs.R_CX = colors; 378 regs.R_DX = start; 379 380 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 381 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 382 383 x86bios_intr(®s, 0x10); 384 385 if (regs.R_AX != 0x004f) { 386 x86bios_free(p, colors * 4); 387 return (1); 388 } 389 390 bits = 8 - bits; 391 for (i = 0; i < colors; ++i) { 392 palette[i * 3] = p[i * 4 + 2] << bits; 393 palette[i * 3 + 1] = p[i * 4 + 1] << bits; 394 palette[i * 3 + 2] = p[i * 4] << bits; 395 } 396 x86bios_free(p, colors * 4); 397 398 return (0); 399} 400 401static int 402vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 403 int bits) 404{ 405 x86regs_t regs; 406 uint32_t offs; 407 u_char *p; 408 int i; 409 410 p = (u_char *)x86bios_alloc(&offs, colors * 4); 411 if (p == NULL) 412 return (1); 413 414 x86bios_init_regs(®s); 415 regs.R_AX = 0x4f09; 416 regs.R_BL = 1; 417 regs.R_CX = colors; 418 regs.R_DX = start; 419 420 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 421 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 422 423 x86bios_intr(®s, 0x10); 424 425 if (regs.R_AX != 0x004f) { 426 x86bios_free(p, colors * 4); 427 return (1); 428 } 429 430 bits = 8 - bits; 431 for (i = 0; i < colors; ++i) { 432 r[i] = p[i * 4 + 2] << bits; 433 g[i] = p[i * 4 + 1] << bits; 434 b[i] = p[i * 4] << bits; 435 } 436 x86bios_free(p, colors * 4); 437 438 return (0); 439} 440 441static int 442vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 443{ 444 x86regs_t regs; 445 uint32_t offs; 446 u_char *p; 447 int i; 448 449 p = (u_char *)x86bios_alloc(&offs, colors * 4); 450 if (p == NULL) 451 return (1); 452 453 x86bios_init_regs(®s); 454 regs.R_AX = 0x4f09; 455 /* regs.R_BL = 0; */ 456 regs.R_CX = colors; 457 regs.R_DX = start; 458 459 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 460 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 461 462 bits = 8 - bits; 463 for (i = 0; i < colors; ++i) { 464 p[i * 4] = palette[i * 3 + 2] >> bits; 465 p[i * 4 + 1] = palette[i * 3 + 1] >> bits; 466 p[i * 4 + 2] = palette[i * 3] >> bits; 467 p[i * 4 + 3] = 0; 468 } 469 x86bios_intr(®s, 0x10); 470 x86bios_free(p, colors * 4); 471 472 return (regs.R_AX != 0x004f); 473} 474 475static int 476vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 477 int bits) 478{ 479 x86regs_t regs; 480 uint32_t offs; 481 u_char *p; 482 int i; 483 484 p = (u_char *)x86bios_alloc(&offs, colors * 4); 485 if (p == NULL) 486 return (1); 487 488 x86bios_init_regs(®s); 489 regs.R_AX = 0x4f09; 490 /* regs.R_BL = 0; */ 491 regs.R_CX = colors; 492 regs.R_DX = start; 493 494 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 495 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 496 497 bits = 8 - bits; 498 for (i = 0; i < colors; ++i) { 499 p[i * 4] = b[i] >> bits; 500 p[i * 4 + 1] = g[i] >> bits; 501 p[i * 4 + 2] = r[i] >> bits; 502 p[i * 4 + 3] = 0; 503 } 504 x86bios_intr(®s, 0x10); 505 x86bios_free(p, colors * 4); 506 507 return (regs.R_AX != 0x004f); 508} 509 510static ssize_t 511vesa_bios_state_buf_size(void) 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_ALL; 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 528static int 529vesa_bios_save_restore(int code, void *p, size_t size) 530{ 531 x86regs_t regs; 532 uint32_t offs; 533 void *buf; 534 535 if (code != STATE_SAVE && code != STATE_LOAD) 536 return (1); 537 538 buf = x86bios_alloc(&offs, size); 539 540 x86bios_init_regs(®s); 541 regs.R_AX = 0x4f04; 542 regs.R_DL = code; 543 regs.R_CX = STATE_ALL; 544 545 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 546 regs.R_BX = X86BIOS_PHYSTOOFF(offs); 547 548 switch (code) { 549 case STATE_SAVE: 550 x86bios_intr(®s, 0x10); 551 bcopy(buf, p, size); 552 break; 553 case STATE_LOAD: 554 bcopy(p, buf, size); 555 x86bios_intr(®s, 0x10); 556 break; 557 } 558 x86bios_free(buf, size); 559 560 return (regs.R_AX != 0x004f); 561} 562 563#ifdef MODE_TABLE_BROKEN 564static int 565vesa_bios_get_line_length(void) 566{ 567 x86regs_t regs; 568 569 x86bios_init_regs(®s); 570 regs.R_AX = 0x4f06; 571 regs.R_BL = 1; 572 573 x86bios_intr(®s, 0x10); 574 575 if (regs.R_AX != 0x004f) 576 return (-1); 577 578 return (regs.R_BX); 579} 580#endif 581 582static int 583vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 584{ 585 x86regs_t regs; 586 587 x86bios_init_regs(®s); 588 regs.R_AX = 0x4f06; 589 /* regs.R_BL = 0; */ 590 regs.R_CX = pixel; 591 592 x86bios_intr(®s, 0x10); 593 594#if VESA_DEBUG > 1 595 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 596#endif 597 if (regs.R_AX != 0x004f) 598 return (-1); 599 600 if (bytes != NULL) 601 *bytes = regs.R_BX; 602 if (lines != NULL) 603 *lines = regs.R_DX; 604 605 return (0); 606} 607 608#if 0 609static int 610vesa_bios_get_start(int *x, int *y) 611{ 612 x86regs_t regs; 613 614 x86bios_init_regs(®s); 615 regs.R_AX = 0x4f07; 616 regs.R_BL = 1; 617 618 x86bios_intr(®s, 0x10); 619 620 if (regs.R_AX != 0x004f) 621 return (-1); 622 623 *x = regs.R_CX; 624 *y = regs.R_DX; 625 626 return (0); 627} 628#endif 629 630static int 631vesa_bios_set_start(int x, int y) 632{ 633 x86regs_t regs; 634 635 x86bios_init_regs(®s); 636 regs.R_AX = 0x4f07; 637 regs.R_BL = 0x80; 638 regs.R_CX = x; 639 regs.R_DX = y; 640 641 x86bios_intr(®s, 0x10); 642 643 return (regs.R_AX != 0x004f); 644} 645 646/* map a generic video mode to a known mode */ 647static int 648vesa_map_gen_mode_num(int type, int color, int mode) 649{ 650 static struct { 651 int from; 652 int to; 653 } mode_map[] = { 654 { M_TEXT_132x25, M_VESA_C132x25 }, 655 { M_TEXT_132x43, M_VESA_C132x43 }, 656 { M_TEXT_132x50, M_VESA_C132x50 }, 657 { M_TEXT_132x60, M_VESA_C132x60 }, 658 }; 659 int i; 660 661 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 662 if (mode_map[i].from == mode) 663 return (mode_map[i].to); 664 } 665 return (mode); 666} 667 668static int 669vesa_translate_flags(u_int16_t vflags) 670{ 671 static struct { 672 u_int16_t mask; 673 int set; 674 int reset; 675 } ftable[] = { 676 { V_MODECOLOR, V_INFO_COLOR, 0 }, 677 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 678 { V_MODELFB, V_INFO_LINEAR, 0 }, 679 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 680 }; 681 int flags; 682 int i; 683 684 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 685 flags |= (vflags & ftable[i].mask) ? 686 ftable[i].set : ftable[i].reset; 687 } 688 return (flags); 689} 690 691static int 692vesa_translate_mmodel(u_int8_t vmodel) 693{ 694 static struct { 695 u_int8_t vmodel; 696 int mmodel; 697 } mtable[] = { 698 { V_MMTEXT, V_INFO_MM_TEXT }, 699 { V_MMCGA, V_INFO_MM_CGA }, 700 { V_MMHGC, V_INFO_MM_HGC }, 701 { V_MMEGA, V_INFO_MM_PLANAR }, 702 { V_MMPACKED, V_INFO_MM_PACKED }, 703 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 704 }; 705 int i; 706 707 for (i = 0; mtable[i].mmodel >= 0; ++i) { 708 if (mtable[i].vmodel == vmodel) 709 return (mtable[i].mmodel); 710 } 711 return (V_INFO_MM_OTHER); 712} 713 714static int 715vesa_get_bpscanline(struct vesa_mode *vmode) 716{ 717 int bpsl; 718 719 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 720 /* Find the minimum length. */ 721 switch (vmode->v_bpp / vmode->v_planes) { 722 case 1: 723 bpsl = vmode->v_width / 8; 724 break; 725 case 2: 726 bpsl = vmode->v_width / 4; 727 break; 728 case 4: 729 bpsl = vmode->v_width / 2; 730 break; 731 default: 732 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 733 bpsl /= vmode->v_planes; 734 break; 735 } 736 737 /* Use VBE 3.0 information if it looks sane. */ 738 if ((vmode->v_modeattr & V_MODELFB) != 0 && 739 vesa_adp_info->v_version >= 0x0300 && 740 vmode->v_linbpscanline > bpsl) 741 return (vmode->v_linbpscanline); 742 743 /* Return the minimum if the mode table looks absurd. */ 744 if (vmode->v_bpscanline < bpsl) 745 return (bpsl); 746 } 747 748 return (vmode->v_bpscanline); 749} 750 751#define VESA_MAXSTR 256 752 753#define VESA_STRCPY(dst, src) do { \ 754 char *str; \ 755 int i; \ 756 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 757 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 758 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 759 dst[i] = str[i]; \ 760 dst[i] = '\0'; \ 761} while (0) 762 763static int 764vesa_bios_init(void) 765{ 766 static struct vesa_info buf; 767 struct vesa_mode vmode; 768 video_info_t *p; 769 x86regs_t regs; 770 size_t bsize; 771 size_t msize; 772 void *vmbuf; 773 uint32_t offs; 774 uint16_t vers; 775 int is_via_cle266; 776 int modes; 777 int i; 778 779 if (vesa_init_done) 780 return (0); 781 782 has_vesa_bios = FALSE; 783 vesa_adp_info = NULL; 784 vesa_vmode_max = 0; 785 vesa_vmode[0].vi_mode = EOT; 786 787 /* 788 * If the VBE real mode interrupt vector is not found, try BIOS POST. 789 */ 790 if (x86bios_get_intr(0x10) == 0) { 791 if (vesa_bios_post() != 0) 792 return (1); 793 if (bootverbose) { 794 offs = x86bios_get_intr(0x10); 795 printf("VESA: interrupt vector installed (0x%x)\n", 796 BIOS_SADDRTOLADDR(offs)); 797 } 798 } 799 800 x86bios_init_regs(®s); 801 regs.R_AX = 0x4f00; 802 803 vmbuf = x86bios_alloc(&offs, sizeof(buf)); 804 if (vmbuf == NULL) 805 return (1); 806 807 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 808 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 809 810 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 811 x86bios_intr(®s, 0x10); 812 813 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 814 goto fail; 815 816 bcopy(vmbuf, &buf, sizeof(buf)); 817 818 vesa_adp_info = &buf; 819 if (bootverbose) { 820 printf("VESA: information block\n"); 821 hexdump(&buf, sizeof(buf), NULL, HD_OMIT_CHARS); 822 } 823 824 vers = buf.v_version = le16toh(buf.v_version); 825 buf.v_oemstr = le32toh(buf.v_oemstr); 826 buf.v_flags = le32toh(buf.v_flags); 827 buf.v_modetable = le32toh(buf.v_modetable); 828 buf.v_memsize = le16toh(buf.v_memsize); 829 buf.v_revision = le16toh(buf.v_revision); 830 buf.v_venderstr = le32toh(buf.v_venderstr); 831 buf.v_prodstr = le32toh(buf.v_prodstr); 832 buf.v_revstr = le32toh(buf.v_revstr); 833 834 if (vers < 0x0102) { 835 printf("VESA: VBE version %d.%d is not supported; " 836 "version 1.2 or later is required.\n", 837 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 838 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 839 return (1); 840 } 841 842 VESA_STRCPY(vesa_oemstr, buf.v_oemstr); 843 if (vers >= 0x0200) { 844 VESA_STRCPY(vesa_venderstr, buf.v_venderstr); 845 VESA_STRCPY(vesa_prodstr, buf.v_prodstr); 846 VESA_STRCPY(vesa_revstr, buf.v_revstr); 847 } 848 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 849 sizeof(VESA_VIA_CLE266)) == 0; 850 851 if (buf.v_modetable == 0) 852 goto fail; 853 854 msize = (size_t)buf.v_memsize * 64 * 1024; 855 856 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf.v_modetable)); 857 858 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 859 (vesa_vmodetab[i] != 0xffff); ++i) { 860 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 861 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 862 continue; 863 864 vmode.v_modeattr = le16toh(vmode.v_modeattr); 865 vmode.v_wgran = le16toh(vmode.v_wgran); 866 vmode.v_wsize = le16toh(vmode.v_wsize); 867 vmode.v_waseg = le16toh(vmode.v_waseg); 868 vmode.v_wbseg = le16toh(vmode.v_wbseg); 869 vmode.v_posfunc = le32toh(vmode.v_posfunc); 870 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 871 vmode.v_width = le16toh(vmode.v_width); 872 vmode.v_height = le16toh(vmode.v_height); 873 vmode.v_lfb = le32toh(vmode.v_lfb); 874 vmode.v_offscreen = le32toh(vmode.v_offscreen); 875 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 876 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 877 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 878 879 /* reject unsupported modes */ 880#if 0 881 if ((vmode.v_modeattr & 882 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 883 (V_MODESUPP | V_MODEOPTINFO)) 884 continue; 885#else 886 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 887#if VESA_DEBUG > 1 888 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 889 " attr = %x\n", 890 vmode.v_modeattr & V_MODEGRAPHICS ? 891 "graphics" : "text", 892 vmode.v_width, vmode.v_height, vmode.v_bpp, 893 vmode.v_modeattr); 894#endif 895 continue; 896 } 897#endif 898 899 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 900 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 901 bsize *= vmode.v_planes; 902 903 /* Does it have enough memory to support this mode? */ 904 if (msize < bsize) { 905#if VESA_DEBUG > 1 906 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 907 " attr = %x, not enough memory\n", 908 vmode.v_modeattr & V_MODEGRAPHICS ? 909 "graphics" : "text", 910 vmode.v_width, vmode.v_height, vmode.v_bpp, 911 vmode.v_modeattr); 912#endif 913 continue; 914 } 915 916 /* expand the array if necessary */ 917 if (modes >= vesa_vmode_max) { 918 vesa_vmode_max += MODE_TABLE_DELTA; 919 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 920 M_DEVBUF, M_WAITOK); 921#if VESA_DEBUG > 1 922 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 923 modes, vesa_vmode_max); 924#endif 925 if (modes > 0) { 926 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 927 free(vesa_vmode, M_DEVBUF); 928 } 929 vesa_vmode = p; 930 } 931 932#if VESA_DEBUG > 1 933 printf("Found VESA %s mode: %d x %d x %d bpp\n", 934 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 935 vmode.v_width, vmode.v_height, vmode.v_bpp); 936#endif 937 if (is_via_cle266) { 938 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 939 vmode.v_width &= 0xff; 940 vmode.v_waseg = 0xb8000 >> 4; 941 } 942 } 943 944 /* copy some fields */ 945 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 946 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 947 vesa_vmode[modes].vi_width = vmode.v_width; 948 vesa_vmode[modes].vi_height = vmode.v_height; 949 vesa_vmode[modes].vi_depth = vmode.v_bpp; 950 vesa_vmode[modes].vi_planes = vmode.v_planes; 951 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 952 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 953 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 954 /* XXX window B */ 955 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 956 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 957 if (vmode.v_modeattr & V_MODELFB) 958 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 959 vesa_vmode[modes].vi_buffer_size = bsize; 960 vesa_vmode[modes].vi_mem_model = 961 vesa_translate_mmodel(vmode.v_memmodel); 962 switch (vesa_vmode[modes].vi_mem_model) { 963 case V_INFO_MM_DIRECT: 964 if ((vmode.v_modeattr & V_MODELFB) != 0 && 965 vers >= 0x0300) { 966 vesa_vmode[modes].vi_pixel_fields[0] = 967 vmode.v_linredfieldpos; 968 vesa_vmode[modes].vi_pixel_fields[1] = 969 vmode.v_lingreenfieldpos; 970 vesa_vmode[modes].vi_pixel_fields[2] = 971 vmode.v_linbluefieldpos; 972 vesa_vmode[modes].vi_pixel_fields[3] = 973 vmode.v_linresfieldpos; 974 vesa_vmode[modes].vi_pixel_fsizes[0] = 975 vmode.v_linredmasksize; 976 vesa_vmode[modes].vi_pixel_fsizes[1] = 977 vmode.v_lingreenmasksize; 978 vesa_vmode[modes].vi_pixel_fsizes[2] = 979 vmode.v_linbluemasksize; 980 vesa_vmode[modes].vi_pixel_fsizes[3] = 981 vmode.v_linresmasksize; 982 } else { 983 vesa_vmode[modes].vi_pixel_fields[0] = 984 vmode.v_redfieldpos; 985 vesa_vmode[modes].vi_pixel_fields[1] = 986 vmode.v_greenfieldpos; 987 vesa_vmode[modes].vi_pixel_fields[2] = 988 vmode.v_bluefieldpos; 989 vesa_vmode[modes].vi_pixel_fields[3] = 990 vmode.v_resfieldpos; 991 vesa_vmode[modes].vi_pixel_fsizes[0] = 992 vmode.v_redmasksize; 993 vesa_vmode[modes].vi_pixel_fsizes[1] = 994 vmode.v_greenmasksize; 995 vesa_vmode[modes].vi_pixel_fsizes[2] = 996 vmode.v_bluemasksize; 997 vesa_vmode[modes].vi_pixel_fsizes[3] = 998 vmode.v_resmasksize; 999 } 1000 /* FALLTHROUGH */ 1001 case V_INFO_MM_PACKED: 1002 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1003 break; 1004 } 1005 vesa_vmode[modes].vi_flags = 1006 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1007 1008 ++modes; 1009 } 1010 vesa_vmode[modes].vi_mode = EOT; 1011 1012 if (bootverbose) 1013 printf("VESA: %d mode(s) found\n", modes); 1014 1015 has_vesa_bios = (modes > 0); 1016 if (!has_vesa_bios) 1017 goto fail; 1018 1019 x86bios_free(vmbuf, sizeof(buf)); 1020 return (0); 1021 1022fail: 1023 if (vmbuf != NULL) 1024 x86bios_free(vmbuf, sizeof(buf)); 1025 if (vesa_oemstr != NULL) { 1026 free(vesa_oemstr, M_DEVBUF); 1027 vesa_oemstr = NULL; 1028 } 1029 if (vesa_venderstr != NULL) { 1030 free(vesa_venderstr, M_DEVBUF); 1031 vesa_venderstr = NULL; 1032 } 1033 if (vesa_prodstr != NULL) { 1034 free(vesa_prodstr, M_DEVBUF); 1035 vesa_prodstr = NULL; 1036 } 1037 if (vesa_revstr != NULL) { 1038 free(vesa_revstr, M_DEVBUF); 1039 vesa_revstr = NULL; 1040 } 1041 return (1); 1042} 1043 1044static void 1045vesa_clear_modes(video_info_t *info, int color) 1046{ 1047 while (info->vi_mode != EOT) { 1048 if ((info->vi_flags & V_INFO_COLOR) != color) 1049 info->vi_mode = NA; 1050 ++info; 1051 } 1052} 1053 1054/* entry points */ 1055 1056static int 1057vesa_configure(int flags) 1058{ 1059 video_adapter_t *adp; 1060 int adapters; 1061 int error; 1062 int i; 1063 1064 if (vesa_init_done) 1065 return (0); 1066 if (flags & VIO_PROBE_ONLY) 1067 return (0); 1068 1069 /* 1070 * If the VESA module has already been loaded, abort loading 1071 * the module this time. 1072 */ 1073 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1074 if (adp->va_flags & V_ADP_VESA) 1075 return (ENXIO); 1076 if (adp->va_type == KD_VGA) 1077 break; 1078 } 1079 1080 /* 1081 * The VGA adapter is not found. This is because either 1082 * 1) the VGA driver has not been initialized, or 2) the VGA card 1083 * is not present. If 1) is the case, we shall defer 1084 * initialization for now and try again later. 1085 */ 1086 if (adp == NULL) { 1087 vga_sub_configure = vesa_configure; 1088 return (ENODEV); 1089 } 1090 1091 /* count number of registered adapters */ 1092 for (++i; vid_get_adapter(i) != NULL; ++i) 1093 ; 1094 adapters = i; 1095 1096 /* call VESA BIOS */ 1097 vesa_adp = adp; 1098 if (vesa_bios_init()) { 1099 vesa_adp = NULL; 1100 return (ENXIO); 1101 } 1102 vesa_adp->va_flags |= V_ADP_VESA; 1103 1104 /* remove conflicting modes if we have more than one adapter */ 1105 if (adapters > 1) { 1106 vesa_clear_modes(vesa_vmode, 1107 (vesa_adp->va_flags & V_ADP_COLOR) ? 1108 V_INFO_COLOR : 0); 1109 } 1110 1111 if ((error = vesa_load_ioctl()) == 0) { 1112 prevvidsw = vidsw[vesa_adp->va_index]; 1113 vidsw[vesa_adp->va_index] = &vesavidsw; 1114 vesa_init_done = TRUE; 1115 } else { 1116 vesa_adp = NULL; 1117 return (error); 1118 } 1119 1120 return (0); 1121} 1122 1123#if 0 1124static int 1125vesa_nop(void) 1126{ 1127 1128 return (0); 1129} 1130#endif 1131 1132static int 1133vesa_error(void) 1134{ 1135 1136 return (1); 1137} 1138 1139static int 1140vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1141{ 1142 1143 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1144} 1145 1146static int 1147vesa_init(int unit, video_adapter_t *adp, int flags) 1148{ 1149 1150 return ((*prevvidsw->init)(unit, adp, flags)); 1151} 1152 1153static int 1154vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1155{ 1156 int i; 1157 1158 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1159 return (0); 1160 1161 if (adp != vesa_adp) 1162 return (1); 1163 1164 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1165 vesa_adp->va_flags & V_ADP_COLOR, mode); 1166 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1167 if (vesa_vmode[i].vi_mode == NA) 1168 continue; 1169 if (vesa_vmode[i].vi_mode == mode) { 1170 *info = vesa_vmode[i]; 1171 return (0); 1172 } 1173 } 1174 return (1); 1175} 1176 1177static int 1178vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1179{ 1180 int i; 1181 1182 if ((*prevvidsw->query_mode)(adp, info) == 0) 1183 return (0); 1184 if (adp != vesa_adp) 1185 return (ENODEV); 1186 1187 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1188 if ((info->vi_width != 0) 1189 && (info->vi_width != vesa_vmode[i].vi_width)) 1190 continue; 1191 if ((info->vi_height != 0) 1192 && (info->vi_height != vesa_vmode[i].vi_height)) 1193 continue; 1194 if ((info->vi_cwidth != 0) 1195 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1196 continue; 1197 if ((info->vi_cheight != 0) 1198 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1199 continue; 1200 if ((info->vi_depth != 0) 1201 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1202 continue; 1203 if ((info->vi_planes != 0) 1204 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1205 continue; 1206 /* pixel format, memory model */ 1207 if ((info->vi_flags != 0) 1208 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1209 continue; 1210 *info = vesa_vmode[i]; 1211 return (0); 1212 } 1213 return (ENODEV); 1214} 1215 1216static int 1217vesa_set_mode(video_adapter_t *adp, int mode) 1218{ 1219 video_info_t info; 1220 1221 if (adp != vesa_adp) 1222 return ((*prevvidsw->set_mode)(adp, mode)); 1223 1224 mode = vesa_map_gen_mode_num(adp->va_type, 1225 adp->va_flags & V_ADP_COLOR, mode); 1226#if VESA_DEBUG > 0 1227 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1228 adp->va_mode, adp->va_mode, mode, mode); 1229#endif 1230 /* 1231 * If the current mode is a VESA mode and the new mode is not, 1232 * restore the state of the adapter first by setting one of the 1233 * standard VGA mode, so that non-standard, extended SVGA registers 1234 * are set to the state compatible with the standard VGA modes. 1235 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1236 * the new mode correctly. 1237 */ 1238 if (VESA_MODE(adp->va_mode)) { 1239 if (!VESA_MODE(mode) && 1240 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1241 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1242 vesa_bios_set_dac(6); 1243 adp->va_flags &= ~V_ADP_DAC8; 1244 } 1245 int10_set_mode(adp->va_initial_bios_mode); 1246 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1247 pmap_unmapdev(adp->va_buffer, 1248 vesa_adp_info->v_memsize * 64 * 1024); 1249 /* 1250 * Once (*prevvidsw->get_info)() succeeded, 1251 * (*prevvidsw->set_mode)() below won't fail... 1252 */ 1253 } 1254 } 1255 1256 /* we may not need to handle this mode after all... */ 1257 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1258 return (0); 1259 1260 /* is the new mode supported? */ 1261 if (vesa_get_info(adp, mode, &info)) 1262 return (1); 1263 /* assert(VESA_MODE(mode)); */ 1264 1265#if VESA_DEBUG > 0 1266 printf("VESA: about to set a VESA mode...\n"); 1267#endif 1268 /* don't use the linear frame buffer for text modes. XXX */ 1269 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1270 info.vi_flags &= ~V_INFO_LINEAR; 1271 1272 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1273 return (1); 1274 1275 /* Palette format is reset by the above VBE function call. */ 1276 adp->va_flags &= ~V_ADP_DAC8; 1277 1278 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1279 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1280 vesa_bios_set_dac(8) > 6) 1281 adp->va_flags |= V_ADP_DAC8; 1282 1283 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1284 pmap_unmapdev(adp->va_buffer, 1285 vesa_adp_info->v_memsize * 64 * 1024); 1286 1287#if VESA_DEBUG > 0 1288 printf("VESA: mode set!\n"); 1289#endif 1290 vesa_adp->va_mode = mode; 1291 vesa_adp->va_flags &= ~V_ADP_COLOR; 1292 vesa_adp->va_flags |= 1293 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1294 vesa_adp->va_crtc_addr = 1295 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1296 1297 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1298 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1299 vesa_adp->va_line_width /= info.vi_planes; 1300 1301#ifdef MODE_TABLE_BROKEN 1302 /* If VBE function returns bigger bytes per scan line, use it. */ 1303 { 1304 int bpsl = vesa_bios_get_line_length(); 1305 if (bpsl > vesa_adp->va_line_width) { 1306 vesa_adp->va_line_width = bpsl; 1307 info.vi_buffer_size = bpsl * info.vi_height; 1308 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1309 info.vi_buffer_size *= info.vi_planes; 1310 } 1311 } 1312#endif 1313 1314 if (info.vi_flags & V_INFO_LINEAR) { 1315#if VESA_DEBUG > 1 1316 printf("VESA: setting up LFB\n"); 1317#endif 1318 vesa_adp->va_buffer = 1319 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1320 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING); 1321 vesa_adp->va_window = vesa_adp->va_buffer; 1322 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1323 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1324 } else { 1325 vesa_adp->va_buffer = 0; 1326 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1327 vesa_adp->va_window_size = info.vi_window_size; 1328 vesa_adp->va_window_gran = info.vi_window_gran; 1329 } 1330 vesa_adp->va_buffer_size = info.vi_buffer_size; 1331 vesa_adp->va_window_orig = 0; 1332 vesa_adp->va_disp_start.x = 0; 1333 vesa_adp->va_disp_start.y = 0; 1334#if VESA_DEBUG > 0 1335 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1336 info.vi_width, vesa_adp->va_line_width); 1337#endif 1338 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1339 1340 /* move hardware cursor out of the way */ 1341 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1342 1343 return (0); 1344} 1345 1346static int 1347vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1348 u_char *data, int ch, int count) 1349{ 1350 1351 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1352 ch, count)); 1353} 1354 1355static int 1356vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1357 u_char *data, int ch, int count) 1358{ 1359 1360 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1361 ch, count)); 1362} 1363 1364static int 1365vesa_show_font(video_adapter_t *adp, int page) 1366{ 1367 1368 return ((*prevvidsw->show_font)(adp, page)); 1369} 1370 1371static int 1372vesa_save_palette(video_adapter_t *adp, u_char *palette) 1373{ 1374 int bits; 1375 1376 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1377 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1378 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1379 return (0); 1380 } 1381 1382 return ((*prevvidsw->save_palette)(adp, palette)); 1383} 1384 1385static int 1386vesa_load_palette(video_adapter_t *adp, u_char *palette) 1387{ 1388 int bits; 1389 1390 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1391 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1392 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1393 return (0); 1394 } 1395 1396 return ((*prevvidsw->load_palette)(adp, palette)); 1397} 1398 1399static int 1400vesa_set_border(video_adapter_t *adp, int color) 1401{ 1402 1403 return ((*prevvidsw->set_border)(adp, color)); 1404} 1405 1406static int 1407vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1408{ 1409 1410 if (adp != vesa_adp) 1411 return ((*prevvidsw->save_state)(adp, p, size)); 1412 1413 if (vesa_state_buf_size == -1) { 1414 vesa_state_buf_size = vesa_bios_state_buf_size(); 1415 if (vesa_state_buf_size == 0) 1416 return (1); 1417 } 1418 if (size == 0) 1419 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1420 else if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1421 return (1); 1422 1423 ((adp_state_t *)p)->sig = V_STATE_SIG; 1424 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1425 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1426 vesa_state_buf_size)); 1427} 1428 1429static int 1430vesa_load_state(video_adapter_t *adp, void *p) 1431{ 1432 1433 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1434 return ((*prevvidsw->load_state)(adp, p)); 1435 1436 if (vesa_state_buf_size <= 0) 1437 return (1); 1438 1439 /* Try BIOS POST to restore a sane state. */ 1440 (void)vesa_bios_post(); 1441 (void)int10_set_mode(adp->va_initial_bios_mode); 1442 1443 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1444 vesa_state_buf_size)); 1445} 1446 1447#if 0 1448static int 1449vesa_get_origin(video_adapter_t *adp, off_t *offset) 1450{ 1451 x86regs_t regs; 1452 1453 x86bios_init_regs(®s); 1454 regs.R_AX = 0x4f05; 1455 regs.R_BL = 0x10; 1456 1457 x86bios_intr(®s, 0x10); 1458 1459 if (regs.R_AX != 0x004f) 1460 return (1); 1461 *offset = regs.DX * adp->va_window_gran; 1462 1463 return (0); 1464} 1465#endif 1466 1467static int 1468vesa_set_origin(video_adapter_t *adp, off_t offset) 1469{ 1470 x86regs_t regs; 1471 1472 /* 1473 * This function should return as quickly as possible to 1474 * maintain good performance of the system. For this reason, 1475 * error checking is kept minimal and let the VESA BIOS to 1476 * detect error. 1477 */ 1478 if (adp != vesa_adp) 1479 return ((*prevvidsw->set_win_org)(adp, offset)); 1480 1481 /* if this is a linear frame buffer, do nothing */ 1482 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1483 return (0); 1484 /* XXX */ 1485 if (adp->va_window_gran == 0) 1486 return (1); 1487 1488 x86bios_init_regs(®s); 1489 regs.R_AX = 0x4f05; 1490 regs.R_DX = offset / adp->va_window_gran; 1491 1492 x86bios_intr(®s, 0x10); 1493 1494 if (regs.R_AX != 0x004f) 1495 return (1); 1496 1497 x86bios_init_regs(®s); 1498 regs.R_AX = 0x4f05; 1499 regs.R_BL = 1; 1500 regs.R_DX = offset / adp->va_window_gran; 1501 x86bios_intr(®s, 0x10); 1502 1503 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1504 return (0); /* XXX */ 1505} 1506 1507static int 1508vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1509{ 1510 1511 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1512} 1513 1514static int 1515vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1516{ 1517 1518 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1519} 1520 1521static int 1522vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1523 int celsize, int blink) 1524{ 1525 1526 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1527 blink)); 1528} 1529 1530static int 1531vesa_blank_display(video_adapter_t *adp, int mode) 1532{ 1533 1534 /* XXX: use VESA DPMS */ 1535 return ((*prevvidsw->blank_display)(adp, mode)); 1536} 1537 1538static int 1539vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1540 int prot, vm_memattr_t *memattr) 1541{ 1542 1543#if VESA_DEBUG > 0 1544 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1545 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1546#endif 1547 1548 if ((adp == vesa_adp) && 1549 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1550 /* va_window_size == va_buffer_size/vi_planes */ 1551 /* XXX: is this correct? */ 1552 if (offset > adp->va_window_size - PAGE_SIZE) 1553 return (-1); 1554 *paddr = adp->va_info.vi_buffer + offset; 1555 return (0); 1556 } 1557 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1558} 1559 1560static int 1561vesa_clear(video_adapter_t *adp) 1562{ 1563 1564 return ((*prevvidsw->clear)(adp)); 1565} 1566 1567static int 1568vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1569{ 1570 1571 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1572} 1573 1574static int 1575vesa_bitblt(video_adapter_t *adp,...) 1576{ 1577 1578 /* FIXME */ 1579 return (1); 1580} 1581 1582static int 1583get_palette(video_adapter_t *adp, int base, int count, 1584 u_char *red, u_char *green, u_char *blue, u_char *trans) 1585{ 1586 u_char *r; 1587 u_char *g; 1588 u_char *b; 1589 int bits; 1590 int error; 1591 1592 if (base < 0 || base >= 256 || count < 0 || count > 256) 1593 return (1); 1594 if ((base + count) > 256) 1595 return (1); 1596 if (!VESA_MODE(adp->va_mode)) 1597 return (1); 1598 1599 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1600 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1601 g = r + count; 1602 b = g + count; 1603 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1604 if (error == 0) { 1605 copyout(r, red, count); 1606 copyout(g, green, count); 1607 copyout(b, blue, count); 1608 if (trans != NULL) { 1609 bzero(r, count); 1610 copyout(r, trans, count); 1611 } 1612 } 1613 free(r, M_DEVBUF); 1614 1615 return (error); 1616} 1617 1618static int 1619set_palette(video_adapter_t *adp, int base, int count, 1620 u_char *red, u_char *green, u_char *blue, u_char *trans) 1621{ 1622 u_char *r; 1623 u_char *g; 1624 u_char *b; 1625 int bits; 1626 int error; 1627 1628 if (base < 0 || base >= 256 || count < 0 || count > 256) 1629 return (1); 1630 if ((base + count) > 256) 1631 return (1); 1632 if (!VESA_MODE(adp->va_mode)) 1633 return (1); 1634 1635 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1636 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1637 g = r + count; 1638 b = g + count; 1639 copyin(red, r, count); 1640 copyin(green, g, count); 1641 copyin(blue, b, count); 1642 1643 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1644 free(r, M_DEVBUF); 1645 1646 return (error); 1647} 1648 1649static int 1650vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1651{ 1652 int bytes; 1653 1654 if (adp != vesa_adp) 1655 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1656 1657 switch (cmd) { 1658 case FBIO_SETWINORG: /* set frame buffer window origin */ 1659 if (!VESA_MODE(adp->va_mode)) 1660 return (*prevvidsw->ioctl)(adp, cmd, arg); 1661 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1662 1663 case FBIO_SETDISPSTART: /* set display start address */ 1664 if (!VESA_MODE(adp->va_mode)) 1665 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1666 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1667 ((video_display_start_t *)arg)->y)) 1668 return (ENODEV); 1669 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1670 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1671 return (0); 1672 1673 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1674 if (!VESA_MODE(adp->va_mode)) 1675 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1676 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1677 return (ENODEV); 1678 adp->va_line_width = bytes; 1679#if VESA_DEBUG > 1 1680 printf("new line width:%d\n", adp->va_line_width); 1681#endif 1682 return (0); 1683 1684 case FBIO_GETPALETTE: /* get color palette */ 1685 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1686 ((video_color_palette_t *)arg)->count, 1687 ((video_color_palette_t *)arg)->red, 1688 ((video_color_palette_t *)arg)->green, 1689 ((video_color_palette_t *)arg)->blue, 1690 ((video_color_palette_t *)arg)->transparent)) 1691 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1692 return (0); 1693 1694 1695 case FBIO_SETPALETTE: /* set color palette */ 1696 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1697 ((video_color_palette_t *)arg)->count, 1698 ((video_color_palette_t *)arg)->red, 1699 ((video_color_palette_t *)arg)->green, 1700 ((video_color_palette_t *)arg)->blue, 1701 ((video_color_palette_t *)arg)->transparent)) 1702 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1703 return (0); 1704 1705 case FBIOGETCMAP: /* get color palette */ 1706 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1707 ((struct fbcmap *)arg)->count, 1708 ((struct fbcmap *)arg)->red, 1709 ((struct fbcmap *)arg)->green, 1710 ((struct fbcmap *)arg)->blue, NULL)) 1711 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1712 return (0); 1713 1714 case FBIOPUTCMAP: /* set color palette */ 1715 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1716 ((struct fbcmap *)arg)->count, 1717 ((struct fbcmap *)arg)->red, 1718 ((struct fbcmap *)arg)->green, 1719 ((struct fbcmap *)arg)->blue, NULL)) 1720 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1721 return (0); 1722 1723 default: 1724 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1725 } 1726} 1727 1728static int 1729vesa_diag(video_adapter_t *adp, int level) 1730{ 1731 int error; 1732 1733 /* call the previous handler first */ 1734 error = (*prevvidsw->diag)(adp, level); 1735 if (error) 1736 return (error); 1737 1738 if (adp != vesa_adp) 1739 return (1); 1740 1741 if (level <= 0) 1742 return (0); 1743 1744 return (0); 1745} 1746 1747static int 1748vesa_bios_info(int level) 1749{ 1750#if VESA_DEBUG > 1 1751 struct vesa_mode vmode; 1752 int i; 1753#endif 1754 uint16_t vers; 1755 1756 vers = vesa_adp_info->v_version; 1757 1758 if (bootverbose) { 1759 /* general adapter information */ 1760 printf( 1761 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1762 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1763 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1764 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1765 vesa_vmodetab, vesa_adp_info->v_modetable); 1766 1767 /* OEM string */ 1768 if (vesa_oemstr != NULL) 1769 printf("VESA: %s\n", vesa_oemstr); 1770 } 1771 1772 if (level <= 0) 1773 return (0); 1774 1775 if (vers >= 0x0200 && bootverbose) { 1776 /* vender name, product name, product revision */ 1777 printf("VESA: %s %s %s\n", 1778 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1779 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1780 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1781 } 1782 1783#if VESA_DEBUG > 1 1784 /* mode information */ 1785 for (i = 0; 1786 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1787 && (vesa_vmodetab[i] != 0xffff); ++i) { 1788 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1789 continue; 1790 1791 /* print something for diagnostic purpose */ 1792 printf("VESA: mode:0x%03x, flags:0x%04x", 1793 vesa_vmodetab[i], vmode.v_modeattr); 1794 if (vmode.v_modeattr & V_MODEOPTINFO) { 1795 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1796 printf(", G %dx%dx%d %d, ", 1797 vmode.v_width, vmode.v_height, 1798 vmode.v_bpp, vmode.v_planes); 1799 } else { 1800 printf(", T %dx%d, ", 1801 vmode.v_width, vmode.v_height); 1802 } 1803 printf("font:%dx%d, ", 1804 vmode.v_cwidth, vmode.v_cheight); 1805 printf("pages:%d, mem:%d", 1806 vmode.v_ipages + 1, vmode.v_memmodel); 1807 } 1808 if (vmode.v_modeattr & V_MODELFB) { 1809 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1810 vmode.v_lfb, vmode.v_offscreen, 1811 vmode.v_offscreensize*1024); 1812 } 1813 printf("\n"); 1814 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1815 vmode.v_waseg, vmode.v_waattr, 1816 vmode.v_wbseg, vmode.v_wbattr); 1817 printf("size:%dk, gran:%dk\n", 1818 vmode.v_wsize, vmode.v_wgran); 1819 } 1820#endif /* VESA_DEBUG > 1 */ 1821 1822 return (0); 1823} 1824 1825/* module loading */ 1826 1827static int 1828vesa_load(void) 1829{ 1830 int error; 1831 int s; 1832 1833 if (vesa_init_done) 1834 return (0); 1835 1836 /* locate a VGA adapter */ 1837 s = spltty(); 1838 vesa_adp = NULL; 1839 error = vesa_configure(0); 1840 splx(s); 1841 1842 if (error == 0) 1843 vesa_bios_info(bootverbose); 1844 1845 return (error); 1846} 1847 1848static int 1849vesa_unload(void) 1850{ 1851 u_char palette[256*3]; 1852 int error; 1853 int s; 1854 1855 /* if the adapter is currently in a VESA mode, don't unload */ 1856 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1857 return (EBUSY); 1858 /* 1859 * FIXME: if there is at least one vty which is in a VESA mode, 1860 * we shouldn't be unloading! XXX 1861 */ 1862 1863 s = spltty(); 1864 if ((error = vesa_unload_ioctl()) == 0) { 1865 if (vesa_adp != NULL) { 1866 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1867 vesa_bios_save_palette(0, 256, palette, 8); 1868 vesa_bios_set_dac(6); 1869 vesa_adp->va_flags &= ~V_ADP_DAC8; 1870 vesa_bios_load_palette(0, 256, palette, 6); 1871 } 1872 vesa_adp->va_flags &= ~V_ADP_VESA; 1873 vidsw[vesa_adp->va_index] = prevvidsw; 1874 } 1875 } 1876 splx(s); 1877 1878 if (vesa_oemstr != NULL) 1879 free(vesa_oemstr, M_DEVBUF); 1880 if (vesa_venderstr != NULL) 1881 free(vesa_venderstr, M_DEVBUF); 1882 if (vesa_prodstr != NULL) 1883 free(vesa_prodstr, M_DEVBUF); 1884 if (vesa_revstr != NULL) 1885 free(vesa_revstr, M_DEVBUF); 1886 if (vesa_vmode != &vesa_vmode_empty) 1887 free(vesa_vmode, M_DEVBUF); 1888 return (error); 1889} 1890 1891static int 1892vesa_mod_event(module_t mod, int type, void *data) 1893{ 1894 1895 switch (type) { 1896 case MOD_LOAD: 1897 return (vesa_load()); 1898 case MOD_UNLOAD: 1899 return (vesa_unload()); 1900 } 1901 return (EOPNOTSUPP); 1902} 1903 1904static moduledata_t vesa_mod = { 1905 "vesa", 1906 vesa_mod_event, 1907 NULL, 1908}; 1909 1910DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1911MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1912 1913#endif /* VGA_NO_MODE_CHANGE */ 1914