vesa.c revision 232069
1/*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * Copyright (c) 2009-2012 Jung-uk Kim <jkim@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer as 11 * the first lines of this file unmodified. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: head/sys/dev/fb/vesa.c 232069 2012-02-23 20:54:22Z 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/lock.h> 41#include <sys/module.h> 42#include <sys/malloc.h> 43#include <sys/mutex.h> 44#include <sys/fbio.h> 45#include <sys/sysctl.h> 46 47#include <vm/vm.h> 48#include <vm/vm_extern.h> 49#include <vm/vm_kern.h> 50#include <vm/vm_param.h> 51#include <vm/pmap.h> 52 53#include <machine/pc/bios.h> 54#include <dev/fb/vesa.h> 55 56#include <dev/fb/fbreg.h> 57#include <dev/fb/vgareg.h> 58 59#include <dev/pci/pcivar.h> 60 61#include <isa/isareg.h> 62 63#include <compat/x86bios/x86bios.h> 64 65#define VESA_BIOS_OFFSET 0xc0000 66#define VESA_PALETTE_SIZE (256 * 4) 67#define VESA_VIA_CLE266 "VIA CLE266\r\n" 68 69#ifndef VESA_DEBUG 70#define VESA_DEBUG 0 71#endif 72 73/* VESA video adapter state buffer stub */ 74struct adp_state { 75 int sig; 76#define V_STATE_SIG 0x61736576 77 u_char regs[1]; 78}; 79typedef struct adp_state adp_state_t; 80 81static struct mtx vesa_lock; 82 83static int vesa_state; 84static void *vesa_state_buf = NULL; 85static uint32_t vesa_state_buf_offs = 0; 86static ssize_t vesa_state_buf_size = 0; 87 88static u_char *vesa_palette = NULL; 89static uint32_t vesa_palette_offs = 0; 90 91static void *vesa_bios = NULL; 92static uint32_t vesa_bios_offs = VESA_BIOS_OFFSET; 93static uint32_t vesa_bios_int10 = 0; 94static size_t vesa_bios_size = 0; 95 96/* VESA video adapter */ 97static video_adapter_t *vesa_adp = NULL; 98 99static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging"); 100static int vesa_shadow_rom = 0; 101TUNABLE_INT("debug.vesa.shadow_rom", &vesa_shadow_rom); 102SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 103 0, "Enable video BIOS shadow"); 104 105/* VESA functions */ 106#if 0 107static int vesa_nop(void); 108#endif 109static int vesa_error(void); 110static vi_probe_t vesa_probe; 111static vi_init_t vesa_init; 112static vi_get_info_t vesa_get_info; 113static vi_query_mode_t vesa_query_mode; 114static vi_set_mode_t vesa_set_mode; 115static vi_save_font_t vesa_save_font; 116static vi_load_font_t vesa_load_font; 117static vi_show_font_t vesa_show_font; 118static vi_save_palette_t vesa_save_palette; 119static vi_load_palette_t vesa_load_palette; 120static vi_set_border_t vesa_set_border; 121static vi_save_state_t vesa_save_state; 122static vi_load_state_t vesa_load_state; 123static vi_set_win_org_t vesa_set_origin; 124static vi_read_hw_cursor_t vesa_read_hw_cursor; 125static vi_set_hw_cursor_t vesa_set_hw_cursor; 126static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 127static vi_blank_display_t vesa_blank_display; 128static vi_mmap_t vesa_mmap; 129static vi_ioctl_t vesa_ioctl; 130static vi_clear_t vesa_clear; 131static vi_fill_rect_t vesa_fill_rect; 132static vi_bitblt_t vesa_bitblt; 133static vi_diag_t vesa_diag; 134static int vesa_bios_info(int level); 135 136static video_switch_t vesavidsw = { 137 vesa_probe, 138 vesa_init, 139 vesa_get_info, 140 vesa_query_mode, 141 vesa_set_mode, 142 vesa_save_font, 143 vesa_load_font, 144 vesa_show_font, 145 vesa_save_palette, 146 vesa_load_palette, 147 vesa_set_border, 148 vesa_save_state, 149 vesa_load_state, 150 vesa_set_origin, 151 vesa_read_hw_cursor, 152 vesa_set_hw_cursor, 153 vesa_set_hw_cursor_shape, 154 vesa_blank_display, 155 vesa_mmap, 156 vesa_ioctl, 157 vesa_clear, 158 vesa_fill_rect, 159 vesa_bitblt, 160 vesa_error, 161 vesa_error, 162 vesa_diag, 163}; 164 165static video_switch_t *prevvidsw; 166 167/* VESA BIOS video modes */ 168#define VESA_MAXMODES 64 169#define EOT (-1) 170#define NA (-2) 171 172#define MODE_TABLE_DELTA 8 173 174static int vesa_vmode_max = 0; 175static video_info_t vesa_vmode_empty = { EOT }; 176static video_info_t *vesa_vmode = &vesa_vmode_empty; 177 178static int vesa_init_done = FALSE; 179static int has_vesa_bios = FALSE; 180static struct vesa_info *vesa_adp_info = NULL; 181static u_int16_t *vesa_vmodetab = NULL; 182static char *vesa_oemstr = NULL; 183static char *vesa_venderstr = NULL; 184static char *vesa_prodstr = NULL; 185static char *vesa_revstr = NULL; 186 187/* local macros and functions */ 188#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 189 190static int int10_set_mode(int mode); 191static int vesa_bios_post(void); 192static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 193static int vesa_bios_set_mode(int mode); 194#if 0 195static int vesa_bios_get_dac(void); 196#endif 197static int vesa_bios_set_dac(int bits); 198static int vesa_bios_save_palette(int start, int colors, u_char *palette, 199 int bits); 200static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 201 u_char *b, int bits); 202static int vesa_bios_load_palette(int start, int colors, u_char *palette, 203 int bits); 204static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 205 u_char *b, int bits); 206#define STATE_SIZE 0 207#define STATE_SAVE 1 208#define STATE_LOAD 2 209static ssize_t vesa_bios_state_buf_size(int); 210static int vesa_bios_save_restore(int code, void *p); 211#ifdef MODE_TABLE_BROKEN 212static int vesa_bios_get_line_length(void); 213#endif 214static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 215#if 0 216static int vesa_bios_get_start(int *x, int *y); 217#endif 218static int vesa_bios_set_start(int x, int y); 219static int vesa_map_gen_mode_num(int type, int color, int mode); 220static int vesa_translate_flags(u_int16_t vflags); 221static int vesa_translate_mmodel(u_int8_t vmodel); 222static int vesa_get_bpscanline(struct vesa_mode *vmode); 223static int vesa_bios_init(void); 224static void vesa_clear_modes(video_info_t *info, int color); 225 226#if 0 227static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 228#endif 229 230/* INT 10 BIOS calls */ 231static int 232int10_set_mode(int mode) 233{ 234 x86regs_t regs; 235 236 x86bios_init_regs(®s); 237 regs.R_AL = mode; 238 239 x86bios_intr(®s, 0x10); 240 241 return (0); 242} 243 244static int 245vesa_bios_post(void) 246{ 247 x86regs_t regs; 248 devclass_t dc; 249 device_t *devs; 250 device_t dev; 251 int count, i, is_pci; 252 253 if (x86bios_get_orm(vesa_bios_offs) == NULL) 254 return (1); 255 256 dev = NULL; 257 is_pci = 0; 258 259 /* Find the matching PCI video controller. */ 260 dc = devclass_find("vgapci"); 261 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 262 for (i = 0; i < count; i++) 263 if (device_get_flags(devs[i]) != 0 && 264 x86bios_match_device(vesa_bios_offs, devs[i])) { 265 dev = devs[i]; 266 is_pci = 1; 267 break; 268 } 269 free(devs, M_TEMP); 270 } 271 272 /* Try VGA if a PCI device is not found. */ 273 if (dev == NULL) { 274 dc = devclass_find(VGA_DRIVER_NAME); 275 if (dc != NULL) 276 dev = devclass_get_device(dc, 0); 277 } 278 279 if (bootverbose) 280 printf("%s: calling BIOS POST\n", 281 dev == NULL ? "VESA" : device_get_nameunit(dev)); 282 283 x86bios_init_regs(®s); 284 if (is_pci) { 285 regs.R_AH = pci_get_bus(dev); 286 regs.R_AL = (pci_get_slot(dev) << 3) | 287 (pci_get_function(dev) & 0x07); 288 } 289 regs.R_DL = 0x80; 290 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 291 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 292 293 if (x86bios_get_intr(0x10) == 0) 294 return (1); 295 296 return (0); 297} 298 299/* VESA BIOS calls */ 300static int 301vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 302{ 303 x86regs_t regs; 304 uint32_t offs; 305 void *buf; 306 307 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 308 if (buf == NULL) 309 return (1); 310 311 x86bios_init_regs(®s); 312 regs.R_AX = 0x4f01; 313 regs.R_CX = mode; 314 315 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 316 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 317 318 x86bios_intr(®s, 0x10); 319 320 if (regs.R_AX != 0x004f) { 321 x86bios_free(buf, sizeof(*vmode)); 322 return (1); 323 } 324 325 bcopy(buf, vmode, sizeof(*vmode)); 326 x86bios_free(buf, sizeof(*vmode)); 327 328 return (0); 329} 330 331static int 332vesa_bios_set_mode(int mode) 333{ 334 x86regs_t regs; 335 336 x86bios_init_regs(®s); 337 regs.R_AX = 0x4f02; 338 regs.R_BX = mode; 339 340 x86bios_intr(®s, 0x10); 341 342 return (regs.R_AX != 0x004f); 343} 344 345#if 0 346static int 347vesa_bios_get_dac(void) 348{ 349 x86regs_t regs; 350 351 x86bios_init_regs(®s); 352 regs.R_AX = 0x4f08; 353 regs.R_BL = 1; 354 355 x86bios_intr(®s, 0x10); 356 357 if (regs.R_AX != 0x004f) 358 return (6); 359 360 return (regs.R_BH); 361} 362#endif 363 364static int 365vesa_bios_set_dac(int bits) 366{ 367 x86regs_t regs; 368 369 x86bios_init_regs(®s); 370 regs.R_AX = 0x4f08; 371 /* regs.R_BL = 0; */ 372 regs.R_BH = bits; 373 374 x86bios_intr(®s, 0x10); 375 376 if (regs.R_AX != 0x004f) 377 return (6); 378 379 return (regs.R_BH); 380} 381 382static int 383vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 384{ 385 x86regs_t regs; 386 int i; 387 388 x86bios_init_regs(®s); 389 regs.R_AX = 0x4f09; 390 regs.R_BL = 1; 391 regs.R_CX = colors; 392 regs.R_DX = start; 393 394 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 395 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 396 397 bits = 8 - bits; 398 mtx_lock(&vesa_lock); 399 x86bios_intr(®s, 0x10); 400 if (regs.R_AX != 0x004f) { 401 mtx_unlock(&vesa_lock); 402 return (1); 403 } 404 for (i = 0; i < colors; ++i) { 405 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 406 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 407 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 408 } 409 mtx_unlock(&vesa_lock); 410 411 return (0); 412} 413 414static int 415vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 416 int bits) 417{ 418 x86regs_t regs; 419 int i; 420 421 x86bios_init_regs(®s); 422 regs.R_AX = 0x4f09; 423 regs.R_BL = 1; 424 regs.R_CX = colors; 425 regs.R_DX = start; 426 427 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 428 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 429 430 bits = 8 - bits; 431 mtx_lock(&vesa_lock); 432 x86bios_intr(®s, 0x10); 433 if (regs.R_AX != 0x004f) { 434 mtx_unlock(&vesa_lock); 435 return (1); 436 } 437 for (i = 0; i < colors; ++i) { 438 r[i] = vesa_palette[i * 4 + 2] << bits; 439 g[i] = vesa_palette[i * 4 + 1] << bits; 440 b[i] = vesa_palette[i * 4] << bits; 441 } 442 mtx_unlock(&vesa_lock); 443 444 return (0); 445} 446 447static int 448vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 449{ 450 x86regs_t regs; 451 int i; 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(vesa_palette_offs); 460 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 461 462 bits = 8 - bits; 463 mtx_lock(&vesa_lock); 464 for (i = 0; i < colors; ++i) { 465 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 466 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 467 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 468 vesa_palette[i * 4 + 3] = 0; 469 } 470 x86bios_intr(®s, 0x10); 471 mtx_unlock(&vesa_lock); 472 473 return (regs.R_AX != 0x004f); 474} 475 476static int 477vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 478 int bits) 479{ 480 x86regs_t regs; 481 int i; 482 483 x86bios_init_regs(®s); 484 regs.R_AX = 0x4f09; 485 /* regs.R_BL = 0; */ 486 regs.R_CX = colors; 487 regs.R_DX = start; 488 489 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 490 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 491 492 bits = 8 - bits; 493 mtx_lock(&vesa_lock); 494 for (i = 0; i < colors; ++i) { 495 vesa_palette[i * 4] = b[i] >> bits; 496 vesa_palette[i * 4 + 1] = g[i] >> bits; 497 vesa_palette[i * 4 + 2] = r[i] >> bits; 498 vesa_palette[i * 4 + 3] = 0; 499 } 500 x86bios_intr(®s, 0x10); 501 mtx_unlock(&vesa_lock); 502 503 return (regs.R_AX != 0x004f); 504} 505 506static ssize_t 507vesa_bios_state_buf_size(int state) 508{ 509 x86regs_t regs; 510 511 x86bios_init_regs(®s); 512 regs.R_AX = 0x4f04; 513 /* regs.R_DL = STATE_SIZE; */ 514 regs.R_CX = state; 515 516 x86bios_intr(®s, 0x10); 517 518 if (regs.R_AX != 0x004f) 519 return (0); 520 521 return (regs.R_BX * 64); 522} 523 524static int 525vesa_bios_save_restore(int code, void *p) 526{ 527 x86regs_t regs; 528 529 if (code != STATE_SAVE && code != STATE_LOAD) 530 return (1); 531 532 x86bios_init_regs(®s); 533 regs.R_AX = 0x4f04; 534 regs.R_DL = code; 535 regs.R_CX = vesa_state; 536 537 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 538 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 539 540 mtx_lock(&vesa_lock); 541 switch (code) { 542 case STATE_SAVE: 543 x86bios_intr(®s, 0x10); 544 bcopy(vesa_state_buf, p, vesa_state_buf_size); 545 break; 546 case STATE_LOAD: 547 bcopy(p, vesa_state_buf, vesa_state_buf_size); 548 x86bios_intr(®s, 0x10); 549 break; 550 } 551 mtx_unlock(&vesa_lock); 552 553 return (regs.R_AX != 0x004f); 554} 555 556#ifdef MODE_TABLE_BROKEN 557static int 558vesa_bios_get_line_length(void) 559{ 560 x86regs_t regs; 561 562 x86bios_init_regs(®s); 563 regs.R_AX = 0x4f06; 564 regs.R_BL = 1; 565 566 x86bios_intr(®s, 0x10); 567 568 if (regs.R_AX != 0x004f) 569 return (-1); 570 571 return (regs.R_BX); 572} 573#endif 574 575static int 576vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 577{ 578 x86regs_t regs; 579 580 x86bios_init_regs(®s); 581 regs.R_AX = 0x4f06; 582 /* regs.R_BL = 0; */ 583 regs.R_CX = pixel; 584 585 x86bios_intr(®s, 0x10); 586 587#if VESA_DEBUG > 1 588 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 589#endif 590 if (regs.R_AX != 0x004f) 591 return (-1); 592 593 if (bytes != NULL) 594 *bytes = regs.R_BX; 595 if (lines != NULL) 596 *lines = regs.R_DX; 597 598 return (0); 599} 600 601#if 0 602static int 603vesa_bios_get_start(int *x, int *y) 604{ 605 x86regs_t regs; 606 607 x86bios_init_regs(®s); 608 regs.R_AX = 0x4f07; 609 regs.R_BL = 1; 610 611 x86bios_intr(®s, 0x10); 612 613 if (regs.R_AX != 0x004f) 614 return (-1); 615 616 *x = regs.R_CX; 617 *y = regs.R_DX; 618 619 return (0); 620} 621#endif 622 623static int 624vesa_bios_set_start(int x, int y) 625{ 626 x86regs_t regs; 627 628 x86bios_init_regs(®s); 629 regs.R_AX = 0x4f07; 630 regs.R_BL = 0x80; 631 regs.R_CX = x; 632 regs.R_DX = y; 633 634 x86bios_intr(®s, 0x10); 635 636 return (regs.R_AX != 0x004f); 637} 638 639/* map a generic video mode to a known mode */ 640static int 641vesa_map_gen_mode_num(int type, int color, int mode) 642{ 643 static struct { 644 int from; 645 int to; 646 } mode_map[] = { 647 { M_TEXT_132x25, M_VESA_C132x25 }, 648 { M_TEXT_132x43, M_VESA_C132x43 }, 649 { M_TEXT_132x50, M_VESA_C132x50 }, 650 { M_TEXT_132x60, M_VESA_C132x60 }, 651 }; 652 int i; 653 654 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 655 if (mode_map[i].from == mode) 656 return (mode_map[i].to); 657 } 658 return (mode); 659} 660 661static int 662vesa_translate_flags(u_int16_t vflags) 663{ 664 static struct { 665 u_int16_t mask; 666 int set; 667 int reset; 668 } ftable[] = { 669 { V_MODECOLOR, V_INFO_COLOR, 0 }, 670 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 671 { V_MODELFB, V_INFO_LINEAR, 0 }, 672 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 673 }; 674 int flags; 675 int i; 676 677 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 678 flags |= (vflags & ftable[i].mask) ? 679 ftable[i].set : ftable[i].reset; 680 } 681 return (flags); 682} 683 684static int 685vesa_translate_mmodel(u_int8_t vmodel) 686{ 687 static struct { 688 u_int8_t vmodel; 689 int mmodel; 690 } mtable[] = { 691 { V_MMTEXT, V_INFO_MM_TEXT }, 692 { V_MMCGA, V_INFO_MM_CGA }, 693 { V_MMHGC, V_INFO_MM_HGC }, 694 { V_MMEGA, V_INFO_MM_PLANAR }, 695 { V_MMPACKED, V_INFO_MM_PACKED }, 696 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 697 }; 698 int i; 699 700 for (i = 0; mtable[i].mmodel >= 0; ++i) { 701 if (mtable[i].vmodel == vmodel) 702 return (mtable[i].mmodel); 703 } 704 return (V_INFO_MM_OTHER); 705} 706 707static int 708vesa_get_bpscanline(struct vesa_mode *vmode) 709{ 710 int bpsl; 711 712 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 713 /* Find the minimum length. */ 714 switch (vmode->v_bpp / vmode->v_planes) { 715 case 1: 716 bpsl = vmode->v_width / 8; 717 break; 718 case 2: 719 bpsl = vmode->v_width / 4; 720 break; 721 case 4: 722 bpsl = vmode->v_width / 2; 723 break; 724 default: 725 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 726 bpsl /= vmode->v_planes; 727 break; 728 } 729 730 /* Use VBE 3.0 information if it looks sane. */ 731 if ((vmode->v_modeattr & V_MODELFB) != 0 && 732 vesa_adp_info->v_version >= 0x0300 && 733 vmode->v_linbpscanline > bpsl) 734 return (vmode->v_linbpscanline); 735 736 /* Return the minimum if the mode table looks absurd. */ 737 if (vmode->v_bpscanline < bpsl) 738 return (bpsl); 739 } 740 741 return (vmode->v_bpscanline); 742} 743 744#define VESA_MAXSTR 256 745 746#define VESA_STRCPY(dst, src) do { \ 747 char *str; \ 748 int i; \ 749 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 750 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 751 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 752 dst[i] = str[i]; \ 753 dst[i] = '\0'; \ 754} while (0) 755 756static int 757vesa_bios_init(void) 758{ 759 struct vesa_mode vmode; 760 struct vesa_info *buf; 761 video_info_t *p; 762 x86regs_t regs; 763 size_t bsize; 764 size_t msize; 765 void *vmbuf; 766 uint8_t *vbios; 767 uint32_t offs; 768 uint16_t vers; 769 int is_via_cle266; 770 int modes; 771 int i; 772 773 if (vesa_init_done) 774 return (0); 775 776 has_vesa_bios = FALSE; 777 vesa_adp_info = NULL; 778 vesa_bios_offs = VESA_BIOS_OFFSET; 779 vesa_vmode_max = 0; 780 vesa_vmode[0].vi_mode = EOT; 781 782 /* 783 * If the VBE real mode interrupt vector is not found, try BIOS POST. 784 */ 785 vesa_bios_int10 = x86bios_get_intr(0x10); 786 if (vesa_bios_int10 == 0) { 787 if (vesa_bios_post() != 0) 788 return (1); 789 vesa_bios_int10 = x86bios_get_intr(0x10); 790 if (vesa_bios_int10 == 0) 791 return (1); 792 } 793 794 /* 795 * Shadow video ROM. 796 */ 797 offs = vesa_bios_int10; 798 if (vesa_shadow_rom) { 799 vbios = x86bios_get_orm(vesa_bios_offs); 800 if (vbios != NULL) { 801 vesa_bios_size = vbios[2] * 512; 802 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 803 (vesa_bios_int10 & 0xffff0000) && 804 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 805 vesa_bios = x86bios_alloc(&vesa_bios_offs, 806 vesa_bios_size, M_WAITOK); 807 memcpy(vesa_bios, vbios, vesa_bios_size); 808 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 809 (vesa_bios_int10 & 0xffff); 810 x86bios_set_intr(0x10, offs); 811 } 812 } 813 if (vesa_bios == NULL) 814 printf("VESA: failed to shadow video ROM\n"); 815 } 816 if (bootverbose) 817 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 818 (offs >> 16) & 0xffff, offs & 0xffff); 819 820 x86bios_init_regs(®s); 821 regs.R_AX = 0x4f00; 822 823 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 824 825 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 826 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 827 828 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 829 x86bios_intr(®s, 0x10); 830 831 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 832 goto fail; 833 834 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 835 bcopy(vmbuf, buf, sizeof(*buf)); 836 837 if (bootverbose) { 838 printf("VESA: information block\n"); 839 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 840 } 841 842 vers = buf->v_version = le16toh(buf->v_version); 843 buf->v_oemstr = le32toh(buf->v_oemstr); 844 buf->v_flags = le32toh(buf->v_flags); 845 buf->v_modetable = le32toh(buf->v_modetable); 846 buf->v_memsize = le16toh(buf->v_memsize); 847 buf->v_revision = le16toh(buf->v_revision); 848 buf->v_venderstr = le32toh(buf->v_venderstr); 849 buf->v_prodstr = le32toh(buf->v_prodstr); 850 buf->v_revstr = le32toh(buf->v_revstr); 851 852 if (vers < 0x0102) { 853 printf("VESA: VBE version %d.%d is not supported; " 854 "version 1.2 or later is required.\n", 855 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 856 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 857 goto fail; 858 } 859 860 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 861 if (vers >= 0x0200) { 862 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 863 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 864 VESA_STRCPY(vesa_revstr, buf->v_revstr); 865 } 866 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 867 sizeof(VESA_VIA_CLE266)) == 0; 868 869 if (buf->v_modetable == 0) 870 goto fail; 871 872 msize = (size_t)buf->v_memsize * 64 * 1024; 873 874 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 875 876 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 877 (vesa_vmodetab[i] != 0xffff); ++i) { 878 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 879 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 880 continue; 881 882 vmode.v_modeattr = le16toh(vmode.v_modeattr); 883 vmode.v_wgran = le16toh(vmode.v_wgran); 884 vmode.v_wsize = le16toh(vmode.v_wsize); 885 vmode.v_waseg = le16toh(vmode.v_waseg); 886 vmode.v_wbseg = le16toh(vmode.v_wbseg); 887 vmode.v_posfunc = le32toh(vmode.v_posfunc); 888 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 889 vmode.v_width = le16toh(vmode.v_width); 890 vmode.v_height = le16toh(vmode.v_height); 891 vmode.v_lfb = le32toh(vmode.v_lfb); 892 vmode.v_offscreen = le32toh(vmode.v_offscreen); 893 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 894 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 895 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 896 897 /* reject unsupported modes */ 898#if 0 899 if ((vmode.v_modeattr & 900 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 901 (V_MODESUPP | V_MODEOPTINFO)) 902 continue; 903#else 904 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 905#if VESA_DEBUG > 1 906 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 907 " attr = %x\n", 908 vmode.v_modeattr & V_MODEGRAPHICS ? 909 "graphics" : "text", 910 vmode.v_width, vmode.v_height, vmode.v_bpp, 911 vmode.v_modeattr); 912#endif 913 continue; 914 } 915#endif 916 917 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 918 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 919 bsize *= vmode.v_planes; 920 921 /* Does it have enough memory to support this mode? */ 922 if (msize < bsize) { 923#if VESA_DEBUG > 1 924 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 925 " attr = %x, not enough memory\n", 926 vmode.v_modeattr & V_MODEGRAPHICS ? 927 "graphics" : "text", 928 vmode.v_width, vmode.v_height, vmode.v_bpp, 929 vmode.v_modeattr); 930#endif 931 continue; 932 } 933 934 /* expand the array if necessary */ 935 if (modes >= vesa_vmode_max) { 936 vesa_vmode_max += MODE_TABLE_DELTA; 937 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 938 M_DEVBUF, M_WAITOK); 939#if VESA_DEBUG > 1 940 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 941 modes, vesa_vmode_max); 942#endif 943 if (modes > 0) { 944 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 945 free(vesa_vmode, M_DEVBUF); 946 } 947 vesa_vmode = p; 948 } 949 950#if VESA_DEBUG > 1 951 printf("Found VESA %s mode: %d x %d x %d bpp\n", 952 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 953 vmode.v_width, vmode.v_height, vmode.v_bpp); 954#endif 955 if (is_via_cle266) { 956 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 957 vmode.v_width &= 0xff; 958 vmode.v_waseg = 0xb8000 >> 4; 959 } 960 } 961 962 /* copy some fields */ 963 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 964 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 965 vesa_vmode[modes].vi_width = vmode.v_width; 966 vesa_vmode[modes].vi_height = vmode.v_height; 967 vesa_vmode[modes].vi_depth = vmode.v_bpp; 968 vesa_vmode[modes].vi_planes = vmode.v_planes; 969 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 970 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 971 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 972 /* XXX window B */ 973 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 974 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 975 if (vmode.v_modeattr & V_MODELFB) 976 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 977 vesa_vmode[modes].vi_buffer_size = bsize; 978 vesa_vmode[modes].vi_mem_model = 979 vesa_translate_mmodel(vmode.v_memmodel); 980 switch (vesa_vmode[modes].vi_mem_model) { 981 case V_INFO_MM_DIRECT: 982 if ((vmode.v_modeattr & V_MODELFB) != 0 && 983 vers >= 0x0300) { 984 vesa_vmode[modes].vi_pixel_fields[0] = 985 vmode.v_linredfieldpos; 986 vesa_vmode[modes].vi_pixel_fields[1] = 987 vmode.v_lingreenfieldpos; 988 vesa_vmode[modes].vi_pixel_fields[2] = 989 vmode.v_linbluefieldpos; 990 vesa_vmode[modes].vi_pixel_fields[3] = 991 vmode.v_linresfieldpos; 992 vesa_vmode[modes].vi_pixel_fsizes[0] = 993 vmode.v_linredmasksize; 994 vesa_vmode[modes].vi_pixel_fsizes[1] = 995 vmode.v_lingreenmasksize; 996 vesa_vmode[modes].vi_pixel_fsizes[2] = 997 vmode.v_linbluemasksize; 998 vesa_vmode[modes].vi_pixel_fsizes[3] = 999 vmode.v_linresmasksize; 1000 } else { 1001 vesa_vmode[modes].vi_pixel_fields[0] = 1002 vmode.v_redfieldpos; 1003 vesa_vmode[modes].vi_pixel_fields[1] = 1004 vmode.v_greenfieldpos; 1005 vesa_vmode[modes].vi_pixel_fields[2] = 1006 vmode.v_bluefieldpos; 1007 vesa_vmode[modes].vi_pixel_fields[3] = 1008 vmode.v_resfieldpos; 1009 vesa_vmode[modes].vi_pixel_fsizes[0] = 1010 vmode.v_redmasksize; 1011 vesa_vmode[modes].vi_pixel_fsizes[1] = 1012 vmode.v_greenmasksize; 1013 vesa_vmode[modes].vi_pixel_fsizes[2] = 1014 vmode.v_bluemasksize; 1015 vesa_vmode[modes].vi_pixel_fsizes[3] = 1016 vmode.v_resmasksize; 1017 } 1018 /* FALLTHROUGH */ 1019 case V_INFO_MM_PACKED: 1020 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1021 break; 1022 } 1023 vesa_vmode[modes].vi_flags = 1024 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1025 1026 ++modes; 1027 } 1028 vesa_vmode[modes].vi_mode = EOT; 1029 1030 if (bootverbose) 1031 printf("VESA: %d mode(s) found\n", modes); 1032 1033 has_vesa_bios = (modes > 0); 1034 if (!has_vesa_bios) 1035 goto fail; 1036 1037 x86bios_free(vmbuf, sizeof(*buf)); 1038 1039 /* Probe supported save/restore states. */ 1040 for (i = 0; i < 4; i++) 1041 if (vesa_bios_state_buf_size(1 << i) > 0) 1042 vesa_state |= 1 << i; 1043 if (vesa_state != 0) 1044 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1045 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1046 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1047 if (vesa_state_buf_size > 0) { 1048 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1049 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1050 } 1051 1052 return (0); 1053 1054fail: 1055 if (vesa_bios != NULL) { 1056 x86bios_set_intr(0x10, vesa_bios_int10); 1057 vesa_bios_offs = VESA_BIOS_OFFSET; 1058 x86bios_free(vesa_bios, vesa_bios_size); 1059 vesa_bios = NULL; 1060 } 1061 if (vmbuf != NULL) 1062 x86bios_free(vmbuf, sizeof(buf)); 1063 if (vesa_adp_info != NULL) { 1064 free(vesa_adp_info, M_DEVBUF); 1065 vesa_adp_info = NULL; 1066 } 1067 if (vesa_oemstr != NULL) { 1068 free(vesa_oemstr, M_DEVBUF); 1069 vesa_oemstr = NULL; 1070 } 1071 if (vesa_venderstr != NULL) { 1072 free(vesa_venderstr, M_DEVBUF); 1073 vesa_venderstr = NULL; 1074 } 1075 if (vesa_prodstr != NULL) { 1076 free(vesa_prodstr, M_DEVBUF); 1077 vesa_prodstr = NULL; 1078 } 1079 if (vesa_revstr != NULL) { 1080 free(vesa_revstr, M_DEVBUF); 1081 vesa_revstr = NULL; 1082 } 1083 return (1); 1084} 1085 1086static void 1087vesa_clear_modes(video_info_t *info, int color) 1088{ 1089 while (info->vi_mode != EOT) { 1090 if ((info->vi_flags & V_INFO_COLOR) != color) 1091 info->vi_mode = NA; 1092 ++info; 1093 } 1094} 1095 1096/* entry points */ 1097 1098static int 1099vesa_configure(int flags) 1100{ 1101 video_adapter_t *adp; 1102 int adapters; 1103 int error; 1104 int i; 1105 1106 if (vesa_init_done) 1107 return (0); 1108 if (flags & VIO_PROBE_ONLY) 1109 return (0); 1110 1111 /* 1112 * If the VESA module has already been loaded, abort loading 1113 * the module this time. 1114 */ 1115 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1116 if (adp->va_flags & V_ADP_VESA) 1117 return (ENXIO); 1118 if (adp->va_type == KD_VGA) 1119 break; 1120 } 1121 1122 /* 1123 * The VGA adapter is not found. This is because either 1124 * 1) the VGA driver has not been initialized, or 2) the VGA card 1125 * is not present. If 1) is the case, we shall defer 1126 * initialization for now and try again later. 1127 */ 1128 if (adp == NULL) { 1129 vga_sub_configure = vesa_configure; 1130 return (ENODEV); 1131 } 1132 1133 /* count number of registered adapters */ 1134 for (++i; vid_get_adapter(i) != NULL; ++i) 1135 ; 1136 adapters = i; 1137 1138 /* call VESA BIOS */ 1139 vesa_adp = adp; 1140 if (vesa_bios_init()) { 1141 vesa_adp = NULL; 1142 return (ENXIO); 1143 } 1144 vesa_adp->va_flags |= V_ADP_VESA; 1145 1146 /* remove conflicting modes if we have more than one adapter */ 1147 if (adapters > 1) { 1148 vesa_clear_modes(vesa_vmode, 1149 (vesa_adp->va_flags & V_ADP_COLOR) ? 1150 V_INFO_COLOR : 0); 1151 } 1152 1153 if ((error = vesa_load_ioctl()) == 0) { 1154 prevvidsw = vidsw[vesa_adp->va_index]; 1155 vidsw[vesa_adp->va_index] = &vesavidsw; 1156 vesa_init_done = TRUE; 1157 } else { 1158 vesa_adp = NULL; 1159 return (error); 1160 } 1161 1162 return (0); 1163} 1164 1165#if 0 1166static int 1167vesa_nop(void) 1168{ 1169 1170 return (0); 1171} 1172#endif 1173 1174static int 1175vesa_error(void) 1176{ 1177 1178 return (1); 1179} 1180 1181static int 1182vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1183{ 1184 1185 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1186} 1187 1188static int 1189vesa_init(int unit, video_adapter_t *adp, int flags) 1190{ 1191 1192 return ((*prevvidsw->init)(unit, adp, flags)); 1193} 1194 1195static int 1196vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1197{ 1198 int i; 1199 1200 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1201 return (0); 1202 1203 if (adp != vesa_adp) 1204 return (1); 1205 1206 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1207 vesa_adp->va_flags & V_ADP_COLOR, mode); 1208 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1209 if (vesa_vmode[i].vi_mode == NA) 1210 continue; 1211 if (vesa_vmode[i].vi_mode == mode) { 1212 *info = vesa_vmode[i]; 1213 return (0); 1214 } 1215 } 1216 return (1); 1217} 1218 1219static int 1220vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1221{ 1222 int i; 1223 1224 if ((*prevvidsw->query_mode)(adp, info) == 0) 1225 return (0); 1226 if (adp != vesa_adp) 1227 return (ENODEV); 1228 1229 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1230 if ((info->vi_width != 0) 1231 && (info->vi_width != vesa_vmode[i].vi_width)) 1232 continue; 1233 if ((info->vi_height != 0) 1234 && (info->vi_height != vesa_vmode[i].vi_height)) 1235 continue; 1236 if ((info->vi_cwidth != 0) 1237 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1238 continue; 1239 if ((info->vi_cheight != 0) 1240 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1241 continue; 1242 if ((info->vi_depth != 0) 1243 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1244 continue; 1245 if ((info->vi_planes != 0) 1246 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1247 continue; 1248 /* pixel format, memory model */ 1249 if ((info->vi_flags != 0) 1250 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1251 continue; 1252 *info = vesa_vmode[i]; 1253 return (0); 1254 } 1255 return (ENODEV); 1256} 1257 1258static int 1259vesa_set_mode(video_adapter_t *adp, int mode) 1260{ 1261 video_info_t info; 1262 1263 if (adp != vesa_adp) 1264 return ((*prevvidsw->set_mode)(adp, mode)); 1265 1266 mode = vesa_map_gen_mode_num(adp->va_type, 1267 adp->va_flags & V_ADP_COLOR, mode); 1268#if VESA_DEBUG > 0 1269 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1270 adp->va_mode, adp->va_mode, mode, mode); 1271#endif 1272 /* 1273 * If the current mode is a VESA mode and the new mode is not, 1274 * restore the state of the adapter first by setting one of the 1275 * standard VGA mode, so that non-standard, extended SVGA registers 1276 * are set to the state compatible with the standard VGA modes. 1277 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1278 * the new mode correctly. 1279 */ 1280 if (VESA_MODE(adp->va_mode)) { 1281 if (!VESA_MODE(mode) && 1282 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1283 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1284 vesa_bios_set_dac(6); 1285 adp->va_flags &= ~V_ADP_DAC8; 1286 } 1287 int10_set_mode(adp->va_initial_bios_mode); 1288 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1289 pmap_unmapdev(adp->va_buffer, 1290 vesa_adp_info->v_memsize * 64 * 1024); 1291 /* 1292 * Once (*prevvidsw->get_info)() succeeded, 1293 * (*prevvidsw->set_mode)() below won't fail... 1294 */ 1295 } 1296 } 1297 1298 /* we may not need to handle this mode after all... */ 1299 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1300 return (0); 1301 1302 /* is the new mode supported? */ 1303 if (vesa_get_info(adp, mode, &info)) 1304 return (1); 1305 /* assert(VESA_MODE(mode)); */ 1306 1307#if VESA_DEBUG > 0 1308 printf("VESA: about to set a VESA mode...\n"); 1309#endif 1310 /* don't use the linear frame buffer for text modes. XXX */ 1311 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1312 info.vi_flags &= ~V_INFO_LINEAR; 1313 1314 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1315 mode |= 0x4000; 1316 if (vesa_bios_set_mode(mode)) 1317 return (1); 1318 1319 /* Palette format is reset by the above VBE function call. */ 1320 adp->va_flags &= ~V_ADP_DAC8; 1321 1322 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1323 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1324 vesa_bios_set_dac(8) > 6) 1325 adp->va_flags |= V_ADP_DAC8; 1326 1327 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1328 pmap_unmapdev(adp->va_buffer, 1329 vesa_adp_info->v_memsize * 64 * 1024); 1330 1331#if VESA_DEBUG > 0 1332 printf("VESA: mode set!\n"); 1333#endif 1334 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1335 vesa_adp->va_flags &= ~V_ADP_COLOR; 1336 vesa_adp->va_flags |= 1337 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1338 vesa_adp->va_crtc_addr = 1339 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1340 1341 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1342 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1343 vesa_adp->va_line_width /= info.vi_planes; 1344 1345#ifdef MODE_TABLE_BROKEN 1346 /* If VBE function returns bigger bytes per scan line, use it. */ 1347 { 1348 int bpsl = vesa_bios_get_line_length(); 1349 if (bpsl > vesa_adp->va_line_width) { 1350 vesa_adp->va_line_width = bpsl; 1351 info.vi_buffer_size = bpsl * info.vi_height; 1352 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1353 info.vi_buffer_size *= info.vi_planes; 1354 } 1355 } 1356#endif 1357 1358 if (info.vi_flags & V_INFO_LINEAR) { 1359#if VESA_DEBUG > 1 1360 printf("VESA: setting up LFB\n"); 1361#endif 1362 vesa_adp->va_buffer = 1363 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1364 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING); 1365 vesa_adp->va_window = vesa_adp->va_buffer; 1366 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1367 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1368 } else { 1369 vesa_adp->va_buffer = 0; 1370 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1371 vesa_adp->va_window_size = info.vi_window_size; 1372 vesa_adp->va_window_gran = info.vi_window_gran; 1373 } 1374 vesa_adp->va_buffer_size = info.vi_buffer_size; 1375 vesa_adp->va_window_orig = 0; 1376 vesa_adp->va_disp_start.x = 0; 1377 vesa_adp->va_disp_start.y = 0; 1378#if VESA_DEBUG > 0 1379 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1380 info.vi_width, vesa_adp->va_line_width); 1381#endif 1382 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1383 1384 /* move hardware cursor out of the way */ 1385 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1386 1387 return (0); 1388} 1389 1390static int 1391vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1392 u_char *data, int ch, int count) 1393{ 1394 1395 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1396 ch, count)); 1397} 1398 1399static int 1400vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1401 u_char *data, int ch, int count) 1402{ 1403 1404 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1405 ch, count)); 1406} 1407 1408static int 1409vesa_show_font(video_adapter_t *adp, int page) 1410{ 1411 1412 return ((*prevvidsw->show_font)(adp, page)); 1413} 1414 1415static int 1416vesa_save_palette(video_adapter_t *adp, u_char *palette) 1417{ 1418 int bits; 1419 1420 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1421 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1422 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1423 return (0); 1424 } 1425 1426 return ((*prevvidsw->save_palette)(adp, palette)); 1427} 1428 1429static int 1430vesa_load_palette(video_adapter_t *adp, u_char *palette) 1431{ 1432 int bits; 1433 1434 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1435 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1436 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1437 return (0); 1438 } 1439 1440 return ((*prevvidsw->load_palette)(adp, palette)); 1441} 1442 1443static int 1444vesa_set_border(video_adapter_t *adp, int color) 1445{ 1446 1447 return ((*prevvidsw->set_border)(adp, color)); 1448} 1449 1450static int 1451vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1452{ 1453 1454 if (adp != vesa_adp || vesa_state_buf_size == 0) 1455 return ((*prevvidsw->save_state)(adp, p, size)); 1456 1457 if (size == 0) 1458 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1459 if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1460 return (EINVAL); 1461 1462 ((adp_state_t *)p)->sig = V_STATE_SIG; 1463 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1464 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1465} 1466 1467static int 1468vesa_load_state(video_adapter_t *adp, void *p) 1469{ 1470 int mode; 1471 1472 if (adp != vesa_adp) 1473 return ((*prevvidsw->load_state)(adp, p)); 1474 1475 /* Try BIOS POST to restore a sane state. */ 1476 (void)vesa_bios_post(); 1477 mode = adp->va_mode; 1478 (void)vesa_set_mode(adp, adp->va_initial_mode); 1479 if (mode != adp->va_initial_mode) 1480 (void)vesa_set_mode(adp, mode); 1481 1482 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1483 return ((*prevvidsw->load_state)(adp, p)); 1484 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1485} 1486 1487#if 0 1488static int 1489vesa_get_origin(video_adapter_t *adp, off_t *offset) 1490{ 1491 x86regs_t regs; 1492 1493 x86bios_init_regs(®s); 1494 regs.R_AX = 0x4f05; 1495 regs.R_BL = 0x10; 1496 1497 x86bios_intr(®s, 0x10); 1498 1499 if (regs.R_AX != 0x004f) 1500 return (1); 1501 *offset = regs.DX * adp->va_window_gran; 1502 1503 return (0); 1504} 1505#endif 1506 1507static int 1508vesa_set_origin(video_adapter_t *adp, off_t offset) 1509{ 1510 x86regs_t regs; 1511 1512 /* 1513 * This function should return as quickly as possible to 1514 * maintain good performance of the system. For this reason, 1515 * error checking is kept minimal and let the VESA BIOS to 1516 * detect error. 1517 */ 1518 if (adp != vesa_adp) 1519 return ((*prevvidsw->set_win_org)(adp, offset)); 1520 1521 /* if this is a linear frame buffer, do nothing */ 1522 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1523 return (0); 1524 /* XXX */ 1525 if (adp->va_window_gran == 0) 1526 return (1); 1527 1528 x86bios_init_regs(®s); 1529 regs.R_AX = 0x4f05; 1530 regs.R_DX = offset / adp->va_window_gran; 1531 1532 x86bios_intr(®s, 0x10); 1533 1534 if (regs.R_AX != 0x004f) 1535 return (1); 1536 1537 x86bios_init_regs(®s); 1538 regs.R_AX = 0x4f05; 1539 regs.R_BL = 1; 1540 regs.R_DX = offset / adp->va_window_gran; 1541 x86bios_intr(®s, 0x10); 1542 1543 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1544 return (0); /* XXX */ 1545} 1546 1547static int 1548vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1549{ 1550 1551 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1552} 1553 1554static int 1555vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1556{ 1557 1558 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1559} 1560 1561static int 1562vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1563 int celsize, int blink) 1564{ 1565 1566 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1567 blink)); 1568} 1569 1570static int 1571vesa_blank_display(video_adapter_t *adp, int mode) 1572{ 1573 1574 /* XXX: use VESA DPMS */ 1575 return ((*prevvidsw->blank_display)(adp, mode)); 1576} 1577 1578static int 1579vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1580 int prot, vm_memattr_t *memattr) 1581{ 1582 1583#if VESA_DEBUG > 0 1584 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1585 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1586#endif 1587 1588 if ((adp == vesa_adp) && 1589 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1590 /* va_window_size == va_buffer_size/vi_planes */ 1591 /* XXX: is this correct? */ 1592 if (offset > adp->va_window_size - PAGE_SIZE) 1593 return (-1); 1594 *paddr = adp->va_info.vi_buffer + offset; 1595 return (0); 1596 } 1597 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1598} 1599 1600static int 1601vesa_clear(video_adapter_t *adp) 1602{ 1603 1604 return ((*prevvidsw->clear)(adp)); 1605} 1606 1607static int 1608vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1609{ 1610 1611 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1612} 1613 1614static int 1615vesa_bitblt(video_adapter_t *adp,...) 1616{ 1617 1618 /* FIXME */ 1619 return (1); 1620} 1621 1622static int 1623get_palette(video_adapter_t *adp, int base, int count, 1624 u_char *red, u_char *green, u_char *blue, u_char *trans) 1625{ 1626 u_char *r; 1627 u_char *g; 1628 u_char *b; 1629 int bits; 1630 int error; 1631 1632 if (base < 0 || base >= 256 || count < 0 || count > 256) 1633 return (1); 1634 if ((base + count) > 256) 1635 return (1); 1636 if (!VESA_MODE(adp->va_mode)) 1637 return (1); 1638 1639 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1640 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1641 g = r + count; 1642 b = g + count; 1643 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1644 if (error == 0) { 1645 copyout(r, red, count); 1646 copyout(g, green, count); 1647 copyout(b, blue, count); 1648 if (trans != NULL) { 1649 bzero(r, count); 1650 copyout(r, trans, count); 1651 } 1652 } 1653 free(r, M_DEVBUF); 1654 1655 return (error); 1656} 1657 1658static int 1659set_palette(video_adapter_t *adp, int base, int count, 1660 u_char *red, u_char *green, u_char *blue, u_char *trans) 1661{ 1662 u_char *r; 1663 u_char *g; 1664 u_char *b; 1665 int bits; 1666 int error; 1667 1668 if (base < 0 || base >= 256 || count < 0 || count > 256) 1669 return (1); 1670 if ((base + count) > 256) 1671 return (1); 1672 if (!VESA_MODE(adp->va_mode)) 1673 return (1); 1674 1675 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1676 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1677 g = r + count; 1678 b = g + count; 1679 copyin(red, r, count); 1680 copyin(green, g, count); 1681 copyin(blue, b, count); 1682 1683 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1684 free(r, M_DEVBUF); 1685 1686 return (error); 1687} 1688 1689static int 1690vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1691{ 1692 int bytes; 1693 1694 if (adp != vesa_adp) 1695 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1696 1697 switch (cmd) { 1698 case FBIO_SETWINORG: /* set frame buffer window origin */ 1699 if (!VESA_MODE(adp->va_mode)) 1700 return (*prevvidsw->ioctl)(adp, cmd, arg); 1701 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1702 1703 case FBIO_SETDISPSTART: /* set display start address */ 1704 if (!VESA_MODE(adp->va_mode)) 1705 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1706 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1707 ((video_display_start_t *)arg)->y)) 1708 return (ENODEV); 1709 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1710 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1711 return (0); 1712 1713 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1714 if (!VESA_MODE(adp->va_mode)) 1715 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1716 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1717 return (ENODEV); 1718 adp->va_line_width = bytes; 1719#if VESA_DEBUG > 1 1720 printf("new line width:%d\n", adp->va_line_width); 1721#endif 1722 return (0); 1723 1724 case FBIO_GETPALETTE: /* get color palette */ 1725 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1726 ((video_color_palette_t *)arg)->count, 1727 ((video_color_palette_t *)arg)->red, 1728 ((video_color_palette_t *)arg)->green, 1729 ((video_color_palette_t *)arg)->blue, 1730 ((video_color_palette_t *)arg)->transparent)) 1731 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1732 return (0); 1733 1734 1735 case FBIO_SETPALETTE: /* set color palette */ 1736 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1737 ((video_color_palette_t *)arg)->count, 1738 ((video_color_palette_t *)arg)->red, 1739 ((video_color_palette_t *)arg)->green, 1740 ((video_color_palette_t *)arg)->blue, 1741 ((video_color_palette_t *)arg)->transparent)) 1742 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1743 return (0); 1744 1745 case FBIOGETCMAP: /* get color palette */ 1746 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1747 ((struct fbcmap *)arg)->count, 1748 ((struct fbcmap *)arg)->red, 1749 ((struct fbcmap *)arg)->green, 1750 ((struct fbcmap *)arg)->blue, NULL)) 1751 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1752 return (0); 1753 1754 case FBIOPUTCMAP: /* set color palette */ 1755 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1756 ((struct fbcmap *)arg)->count, 1757 ((struct fbcmap *)arg)->red, 1758 ((struct fbcmap *)arg)->green, 1759 ((struct fbcmap *)arg)->blue, NULL)) 1760 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1761 return (0); 1762 1763 default: 1764 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1765 } 1766} 1767 1768static int 1769vesa_diag(video_adapter_t *adp, int level) 1770{ 1771 int error; 1772 1773 /* call the previous handler first */ 1774 error = (*prevvidsw->diag)(adp, level); 1775 if (error) 1776 return (error); 1777 1778 if (adp != vesa_adp) 1779 return (1); 1780 1781 if (level <= 0) 1782 return (0); 1783 1784 return (0); 1785} 1786 1787static int 1788vesa_bios_info(int level) 1789{ 1790#if VESA_DEBUG > 1 1791 struct vesa_mode vmode; 1792 int i; 1793#endif 1794 uint16_t vers; 1795 1796 vers = vesa_adp_info->v_version; 1797 1798 if (bootverbose) { 1799 /* general adapter information */ 1800 printf( 1801 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1802 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1803 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1804 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1805 vesa_vmodetab, vesa_adp_info->v_modetable); 1806 1807 /* OEM string */ 1808 if (vesa_oemstr != NULL) 1809 printf("VESA: %s\n", vesa_oemstr); 1810 } 1811 1812 if (level <= 0) 1813 return (0); 1814 1815 if (vers >= 0x0200 && bootverbose) { 1816 /* vender name, product name, product revision */ 1817 printf("VESA: %s %s %s\n", 1818 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1819 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1820 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1821 } 1822 1823#if VESA_DEBUG > 1 1824 /* mode information */ 1825 for (i = 0; 1826 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1827 && (vesa_vmodetab[i] != 0xffff); ++i) { 1828 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1829 continue; 1830 1831 /* print something for diagnostic purpose */ 1832 printf("VESA: mode:0x%03x, flags:0x%04x", 1833 vesa_vmodetab[i], vmode.v_modeattr); 1834 if (vmode.v_modeattr & V_MODEOPTINFO) { 1835 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1836 printf(", G %dx%dx%d %d, ", 1837 vmode.v_width, vmode.v_height, 1838 vmode.v_bpp, vmode.v_planes); 1839 } else { 1840 printf(", T %dx%d, ", 1841 vmode.v_width, vmode.v_height); 1842 } 1843 printf("font:%dx%d, ", 1844 vmode.v_cwidth, vmode.v_cheight); 1845 printf("pages:%d, mem:%d", 1846 vmode.v_ipages + 1, vmode.v_memmodel); 1847 } 1848 if (vmode.v_modeattr & V_MODELFB) { 1849 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1850 vmode.v_lfb, vmode.v_offscreen, 1851 vmode.v_offscreensize*1024); 1852 } 1853 printf("\n"); 1854 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1855 vmode.v_waseg, vmode.v_waattr, 1856 vmode.v_wbseg, vmode.v_wbattr); 1857 printf("size:%dk, gran:%dk\n", 1858 vmode.v_wsize, vmode.v_wgran); 1859 } 1860#endif /* VESA_DEBUG > 1 */ 1861 1862 return (0); 1863} 1864 1865/* module loading */ 1866 1867static int 1868vesa_load(void) 1869{ 1870 int error; 1871 1872 if (vesa_init_done) 1873 return (0); 1874 1875 mtx_init(&vesa_lock, "VESA lock", NULL, MTX_DEF); 1876 1877 /* locate a VGA adapter */ 1878 vesa_adp = NULL; 1879 error = vesa_configure(0); 1880 1881 if (error == 0) 1882 vesa_bios_info(bootverbose); 1883 1884 return (error); 1885} 1886 1887static int 1888vesa_unload(void) 1889{ 1890 u_char palette[256*3]; 1891 int error; 1892 1893 /* if the adapter is currently in a VESA mode, don't unload */ 1894 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1895 return (EBUSY); 1896 /* 1897 * FIXME: if there is at least one vty which is in a VESA mode, 1898 * we shouldn't be unloading! XXX 1899 */ 1900 1901 if ((error = vesa_unload_ioctl()) == 0) { 1902 if (vesa_adp != NULL) { 1903 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1904 vesa_bios_save_palette(0, 256, palette, 8); 1905 vesa_bios_set_dac(6); 1906 vesa_adp->va_flags &= ~V_ADP_DAC8; 1907 vesa_bios_load_palette(0, 256, palette, 6); 1908 } 1909 vesa_adp->va_flags &= ~V_ADP_VESA; 1910 vidsw[vesa_adp->va_index] = prevvidsw; 1911 } 1912 } 1913 1914 if (vesa_bios != NULL) { 1915 x86bios_set_intr(0x10, vesa_bios_int10); 1916 x86bios_free(vesa_bios, vesa_bios_size); 1917 } 1918 if (vesa_adp_info != NULL) 1919 free(vesa_adp_info, M_DEVBUF); 1920 if (vesa_oemstr != NULL) 1921 free(vesa_oemstr, M_DEVBUF); 1922 if (vesa_venderstr != NULL) 1923 free(vesa_venderstr, M_DEVBUF); 1924 if (vesa_prodstr != NULL) 1925 free(vesa_prodstr, M_DEVBUF); 1926 if (vesa_revstr != NULL) 1927 free(vesa_revstr, M_DEVBUF); 1928 if (vesa_vmode != &vesa_vmode_empty) 1929 free(vesa_vmode, M_DEVBUF); 1930 if (vesa_palette != NULL) 1931 x86bios_free(vesa_palette, 1932 VESA_PALETTE_SIZE + vesa_state_buf_size); 1933 1934 mtx_destroy(&vesa_lock); 1935 1936 return (error); 1937} 1938 1939static int 1940vesa_mod_event(module_t mod, int type, void *data) 1941{ 1942 1943 switch (type) { 1944 case MOD_LOAD: 1945 return (vesa_load()); 1946 case MOD_UNLOAD: 1947 return (vesa_unload()); 1948 } 1949 return (EOPNOTSUPP); 1950} 1951 1952static moduledata_t vesa_mod = { 1953 "vesa", 1954 vesa_mod_event, 1955 NULL, 1956}; 1957 1958DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1959MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1960 1961#endif /* VGA_NO_MODE_CHANGE */ 1962