vesa.c revision 211827
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 211827 2010-08-25 22:09:02Z 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 void *vesa_state_buf = NULL; 84static uint32_t vesa_state_buf_offs = 0; 85static ssize_t vesa_state_buf_size = 0; 86 87static u_char *vesa_palette = NULL; 88static uint32_t vesa_palette_offs = 0; 89 90static void *vesa_bios = NULL; 91static uint32_t vesa_bios_offs = VESA_BIOS_OFFSET; 92static uint32_t vesa_bios_int10 = 0; 93static size_t vesa_bios_size = 0; 94 95/* VESA video adapter */ 96static video_adapter_t *vesa_adp = NULL; 97 98SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging"); 99static int vesa_shadow_rom = 1; 100TUNABLE_INT("debug.vesa.shadow_rom", &vesa_shadow_rom); 101SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 102 1, "Enable video BIOS shadow"); 103 104/* VESA functions */ 105#if 0 106static int vesa_nop(void); 107#endif 108static int vesa_error(void); 109static vi_probe_t vesa_probe; 110static vi_init_t vesa_init; 111static vi_get_info_t vesa_get_info; 112static vi_query_mode_t vesa_query_mode; 113static vi_set_mode_t vesa_set_mode; 114static vi_save_font_t vesa_save_font; 115static vi_load_font_t vesa_load_font; 116static vi_show_font_t vesa_show_font; 117static vi_save_palette_t vesa_save_palette; 118static vi_load_palette_t vesa_load_palette; 119static vi_set_border_t vesa_set_border; 120static vi_save_state_t vesa_save_state; 121static vi_load_state_t vesa_load_state; 122static vi_set_win_org_t vesa_set_origin; 123static vi_read_hw_cursor_t vesa_read_hw_cursor; 124static vi_set_hw_cursor_t vesa_set_hw_cursor; 125static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 126static vi_blank_display_t vesa_blank_display; 127static vi_mmap_t vesa_mmap; 128static vi_ioctl_t vesa_ioctl; 129static vi_clear_t vesa_clear; 130static vi_fill_rect_t vesa_fill_rect; 131static vi_bitblt_t vesa_bitblt; 132static vi_diag_t vesa_diag; 133static int vesa_bios_info(int level); 134 135static video_switch_t vesavidsw = { 136 vesa_probe, 137 vesa_init, 138 vesa_get_info, 139 vesa_query_mode, 140 vesa_set_mode, 141 vesa_save_font, 142 vesa_load_font, 143 vesa_show_font, 144 vesa_save_palette, 145 vesa_load_palette, 146 vesa_set_border, 147 vesa_save_state, 148 vesa_load_state, 149 vesa_set_origin, 150 vesa_read_hw_cursor, 151 vesa_set_hw_cursor, 152 vesa_set_hw_cursor_shape, 153 vesa_blank_display, 154 vesa_mmap, 155 vesa_ioctl, 156 vesa_clear, 157 vesa_fill_rect, 158 vesa_bitblt, 159 vesa_error, 160 vesa_error, 161 vesa_diag, 162}; 163 164static video_switch_t *prevvidsw; 165 166/* VESA BIOS video modes */ 167#define VESA_MAXMODES 64 168#define EOT (-1) 169#define NA (-2) 170 171#define MODE_TABLE_DELTA 8 172 173static int vesa_vmode_max = 0; 174static video_info_t vesa_vmode_empty = { EOT }; 175static video_info_t *vesa_vmode = &vesa_vmode_empty; 176 177static int vesa_init_done = FALSE; 178static int has_vesa_bios = FALSE; 179static struct vesa_info *vesa_adp_info = NULL; 180static u_int16_t *vesa_vmodetab = NULL; 181static char *vesa_oemstr = NULL; 182static char *vesa_venderstr = NULL; 183static char *vesa_prodstr = NULL; 184static char *vesa_revstr = NULL; 185 186/* local macros and functions */ 187#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 188 189static int int10_set_mode(int mode); 190static int vesa_bios_post(void); 191static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 192static int vesa_bios_set_mode(int mode); 193#if 0 194static int vesa_bios_get_dac(void); 195#endif 196static int vesa_bios_set_dac(int bits); 197static int vesa_bios_save_palette(int start, int colors, u_char *palette, 198 int bits); 199static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 200 u_char *b, int bits); 201static int vesa_bios_load_palette(int start, int colors, u_char *palette, 202 int bits); 203static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 204 u_char *b, int bits); 205#define STATE_SIZE 0 206#define STATE_SAVE 1 207#define STATE_LOAD 2 208#define STATE_HW (1<<0) 209#define STATE_DATA (1<<1) 210#define STATE_DAC (1<<2) 211#define STATE_REG (1<<3) 212#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 213#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 214static ssize_t vesa_bios_state_buf_size(void); 215static int vesa_bios_save_restore(int code, void *p); 216#ifdef MODE_TABLE_BROKEN 217static int vesa_bios_get_line_length(void); 218#endif 219static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 220#if 0 221static int vesa_bios_get_start(int *x, int *y); 222#endif 223static int vesa_bios_set_start(int x, int y); 224static int vesa_map_gen_mode_num(int type, int color, int mode); 225static int vesa_translate_flags(u_int16_t vflags); 226static int vesa_translate_mmodel(u_int8_t vmodel); 227static int vesa_get_bpscanline(struct vesa_mode *vmode); 228static int vesa_bios_init(void); 229static void vesa_clear_modes(video_info_t *info, int color); 230 231#if 0 232static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 233#endif 234 235/* INT 10 BIOS calls */ 236static int 237int10_set_mode(int mode) 238{ 239 x86regs_t regs; 240 241 x86bios_init_regs(®s); 242 regs.R_AL = mode; 243 244 x86bios_intr(®s, 0x10); 245 246 return (0); 247} 248 249static int 250vesa_bios_post(void) 251{ 252 x86regs_t regs; 253 devclass_t dc; 254 device_t *devs; 255 device_t dev; 256 int count, i, is_pci; 257 258 if (x86bios_get_orm(vesa_bios_offs) == NULL) 259 return (1); 260 261 dev = NULL; 262 is_pci = 0; 263 264 /* Find the matching PCI video controller. */ 265 dc = devclass_find("vgapci"); 266 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 267 for (i = 0; i < count; i++) 268 if (device_get_flags(devs[i]) != 0 && 269 x86bios_match_device(vesa_bios_offs, devs[i])) { 270 dev = devs[i]; 271 is_pci = 1; 272 break; 273 } 274 free(devs, M_TEMP); 275 } 276 277 /* Try VGA if a PCI device is not found. */ 278 if (dev == NULL) { 279 dc = devclass_find(VGA_DRIVER_NAME); 280 if (dc != NULL) 281 dev = devclass_get_device(dc, 0); 282 } 283 284 if (bootverbose) 285 printf("%s: calling BIOS POST\n", 286 dev == NULL ? "VESA" : device_get_nameunit(dev)); 287 288 x86bios_init_regs(®s); 289 if (is_pci) { 290 regs.R_AH = pci_get_bus(dev); 291 regs.R_AL = (pci_get_slot(dev) << 3) | 292 (pci_get_function(dev) & 0x07); 293 } 294 regs.R_DL = 0x80; 295 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 296 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 297 298 if (x86bios_get_intr(0x10) == 0) 299 return (1); 300 301 return (0); 302} 303 304/* VESA BIOS calls */ 305static int 306vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 307{ 308 x86regs_t regs; 309 uint32_t offs; 310 void *buf; 311 312 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 313 if (buf == NULL) 314 return (1); 315 316 x86bios_init_regs(®s); 317 regs.R_AX = 0x4f01; 318 regs.R_CX = mode; 319 320 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 321 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 322 323 x86bios_intr(®s, 0x10); 324 325 if (regs.R_AX != 0x004f) { 326 x86bios_free(buf, sizeof(*vmode)); 327 return (1); 328 } 329 330 bcopy(buf, vmode, sizeof(*vmode)); 331 x86bios_free(buf, sizeof(*vmode)); 332 333 return (0); 334} 335 336static int 337vesa_bios_set_mode(int mode) 338{ 339 x86regs_t regs; 340 341 x86bios_init_regs(®s); 342 regs.R_AX = 0x4f02; 343 regs.R_BX = mode; 344 345 x86bios_intr(®s, 0x10); 346 347 return (regs.R_AX != 0x004f); 348} 349 350#if 0 351static int 352vesa_bios_get_dac(void) 353{ 354 x86regs_t regs; 355 356 x86bios_init_regs(®s); 357 regs.R_AX = 0x4f08; 358 regs.R_BL = 1; 359 360 x86bios_intr(®s, 0x10); 361 362 if (regs.R_AX != 0x004f) 363 return (6); 364 365 return (regs.R_BH); 366} 367#endif 368 369static int 370vesa_bios_set_dac(int bits) 371{ 372 x86regs_t regs; 373 374 x86bios_init_regs(®s); 375 regs.R_AX = 0x4f08; 376 /* regs.R_BL = 0; */ 377 regs.R_BH = bits; 378 379 x86bios_intr(®s, 0x10); 380 381 if (regs.R_AX != 0x004f) 382 return (6); 383 384 return (regs.R_BH); 385} 386 387static int 388vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 389{ 390 x86regs_t regs; 391 int i; 392 393 x86bios_init_regs(®s); 394 regs.R_AX = 0x4f09; 395 regs.R_BL = 1; 396 regs.R_CX = colors; 397 regs.R_DX = start; 398 399 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 400 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 401 402 bits = 8 - bits; 403 mtx_lock(&vesa_lock); 404 x86bios_intr(®s, 0x10); 405 if (regs.R_AX != 0x004f) { 406 mtx_unlock(&vesa_lock); 407 return (1); 408 } 409 for (i = 0; i < colors; ++i) { 410 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 411 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 412 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 413 } 414 mtx_unlock(&vesa_lock); 415 416 return (0); 417} 418 419static int 420vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 421 int bits) 422{ 423 x86regs_t regs; 424 int i; 425 426 x86bios_init_regs(®s); 427 regs.R_AX = 0x4f09; 428 regs.R_BL = 1; 429 regs.R_CX = colors; 430 regs.R_DX = start; 431 432 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 433 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 434 435 bits = 8 - bits; 436 mtx_lock(&vesa_lock); 437 x86bios_intr(®s, 0x10); 438 if (regs.R_AX != 0x004f) { 439 mtx_unlock(&vesa_lock); 440 return (1); 441 } 442 for (i = 0; i < colors; ++i) { 443 r[i] = vesa_palette[i * 4 + 2] << bits; 444 g[i] = vesa_palette[i * 4 + 1] << bits; 445 b[i] = vesa_palette[i * 4] << bits; 446 } 447 mtx_unlock(&vesa_lock); 448 449 return (0); 450} 451 452static int 453vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 454{ 455 x86regs_t regs; 456 int i; 457 458 x86bios_init_regs(®s); 459 regs.R_AX = 0x4f09; 460 /* regs.R_BL = 0; */ 461 regs.R_CX = colors; 462 regs.R_DX = start; 463 464 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 465 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 466 467 bits = 8 - bits; 468 mtx_lock(&vesa_lock); 469 for (i = 0; i < colors; ++i) { 470 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 471 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 472 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 473 vesa_palette[i * 4 + 3] = 0; 474 } 475 x86bios_intr(®s, 0x10); 476 mtx_unlock(&vesa_lock); 477 478 return (regs.R_AX != 0x004f); 479} 480 481static int 482vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 483 int bits) 484{ 485 x86regs_t regs; 486 int i; 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(vesa_palette_offs); 495 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 496 497 bits = 8 - bits; 498 mtx_lock(&vesa_lock); 499 for (i = 0; i < colors; ++i) { 500 vesa_palette[i * 4] = b[i] >> bits; 501 vesa_palette[i * 4 + 1] = g[i] >> bits; 502 vesa_palette[i * 4 + 2] = r[i] >> bits; 503 vesa_palette[i * 4 + 3] = 0; 504 } 505 x86bios_intr(®s, 0x10); 506 mtx_unlock(&vesa_lock); 507 508 return (regs.R_AX != 0x004f); 509} 510 511static ssize_t 512vesa_bios_state_buf_size(void) 513{ 514 x86regs_t regs; 515 516 x86bios_init_regs(®s); 517 regs.R_AX = 0x4f04; 518 /* regs.R_DL = STATE_SIZE; */ 519 regs.R_CX = STATE_MOST; 520 521 x86bios_intr(®s, 0x10); 522 523 if (regs.R_AX != 0x004f) 524 return (0); 525 526 return (regs.R_BX * 64); 527} 528 529static int 530vesa_bios_save_restore(int code, void *p) 531{ 532 x86regs_t regs; 533 534 if (code != STATE_SAVE && code != STATE_LOAD) 535 return (1); 536 537 x86bios_init_regs(®s); 538 regs.R_AX = 0x4f04; 539 regs.R_DL = code; 540 regs.R_CX = STATE_MOST; 541 542 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 543 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 544 545 mtx_lock(&vesa_lock); 546 switch (code) { 547 case STATE_SAVE: 548 x86bios_intr(®s, 0x10); 549 bcopy(vesa_state_buf, p, vesa_state_buf_size); 550 break; 551 case STATE_LOAD: 552 bcopy(p, vesa_state_buf, vesa_state_buf_size); 553 x86bios_intr(®s, 0x10); 554 break; 555 } 556 mtx_unlock(&vesa_lock); 557 558 return (regs.R_AX != 0x004f); 559} 560 561#ifdef MODE_TABLE_BROKEN 562static int 563vesa_bios_get_line_length(void) 564{ 565 x86regs_t regs; 566 567 x86bios_init_regs(®s); 568 regs.R_AX = 0x4f06; 569 regs.R_BL = 1; 570 571 x86bios_intr(®s, 0x10); 572 573 if (regs.R_AX != 0x004f) 574 return (-1); 575 576 return (regs.R_BX); 577} 578#endif 579 580static int 581vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 582{ 583 x86regs_t regs; 584 585 x86bios_init_regs(®s); 586 regs.R_AX = 0x4f06; 587 /* regs.R_BL = 0; */ 588 regs.R_CX = pixel; 589 590 x86bios_intr(®s, 0x10); 591 592#if VESA_DEBUG > 1 593 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 594#endif 595 if (regs.R_AX != 0x004f) 596 return (-1); 597 598 if (bytes != NULL) 599 *bytes = regs.R_BX; 600 if (lines != NULL) 601 *lines = regs.R_DX; 602 603 return (0); 604} 605 606#if 0 607static int 608vesa_bios_get_start(int *x, int *y) 609{ 610 x86regs_t regs; 611 612 x86bios_init_regs(®s); 613 regs.R_AX = 0x4f07; 614 regs.R_BL = 1; 615 616 x86bios_intr(®s, 0x10); 617 618 if (regs.R_AX != 0x004f) 619 return (-1); 620 621 *x = regs.R_CX; 622 *y = regs.R_DX; 623 624 return (0); 625} 626#endif 627 628static int 629vesa_bios_set_start(int x, int y) 630{ 631 x86regs_t regs; 632 633 x86bios_init_regs(®s); 634 regs.R_AX = 0x4f07; 635 regs.R_BL = 0x80; 636 regs.R_CX = x; 637 regs.R_DX = y; 638 639 x86bios_intr(®s, 0x10); 640 641 return (regs.R_AX != 0x004f); 642} 643 644/* map a generic video mode to a known mode */ 645static int 646vesa_map_gen_mode_num(int type, int color, int mode) 647{ 648 static struct { 649 int from; 650 int to; 651 } mode_map[] = { 652 { M_TEXT_132x25, M_VESA_C132x25 }, 653 { M_TEXT_132x43, M_VESA_C132x43 }, 654 { M_TEXT_132x50, M_VESA_C132x50 }, 655 { M_TEXT_132x60, M_VESA_C132x60 }, 656 }; 657 int i; 658 659 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 660 if (mode_map[i].from == mode) 661 return (mode_map[i].to); 662 } 663 return (mode); 664} 665 666static int 667vesa_translate_flags(u_int16_t vflags) 668{ 669 static struct { 670 u_int16_t mask; 671 int set; 672 int reset; 673 } ftable[] = { 674 { V_MODECOLOR, V_INFO_COLOR, 0 }, 675 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 676 { V_MODELFB, V_INFO_LINEAR, 0 }, 677 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 678 }; 679 int flags; 680 int i; 681 682 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 683 flags |= (vflags & ftable[i].mask) ? 684 ftable[i].set : ftable[i].reset; 685 } 686 return (flags); 687} 688 689static int 690vesa_translate_mmodel(u_int8_t vmodel) 691{ 692 static struct { 693 u_int8_t vmodel; 694 int mmodel; 695 } mtable[] = { 696 { V_MMTEXT, V_INFO_MM_TEXT }, 697 { V_MMCGA, V_INFO_MM_CGA }, 698 { V_MMHGC, V_INFO_MM_HGC }, 699 { V_MMEGA, V_INFO_MM_PLANAR }, 700 { V_MMPACKED, V_INFO_MM_PACKED }, 701 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 702 }; 703 int i; 704 705 for (i = 0; mtable[i].mmodel >= 0; ++i) { 706 if (mtable[i].vmodel == vmodel) 707 return (mtable[i].mmodel); 708 } 709 return (V_INFO_MM_OTHER); 710} 711 712static int 713vesa_get_bpscanline(struct vesa_mode *vmode) 714{ 715 int bpsl; 716 717 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 718 /* Find the minimum length. */ 719 switch (vmode->v_bpp / vmode->v_planes) { 720 case 1: 721 bpsl = vmode->v_width / 8; 722 break; 723 case 2: 724 bpsl = vmode->v_width / 4; 725 break; 726 case 4: 727 bpsl = vmode->v_width / 2; 728 break; 729 default: 730 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 731 bpsl /= vmode->v_planes; 732 break; 733 } 734 735 /* Use VBE 3.0 information if it looks sane. */ 736 if ((vmode->v_modeattr & V_MODELFB) != 0 && 737 vesa_adp_info->v_version >= 0x0300 && 738 vmode->v_linbpscanline > bpsl) 739 return (vmode->v_linbpscanline); 740 741 /* Return the minimum if the mode table looks absurd. */ 742 if (vmode->v_bpscanline < bpsl) 743 return (bpsl); 744 } 745 746 return (vmode->v_bpscanline); 747} 748 749#define VESA_MAXSTR 256 750 751#define VESA_STRCPY(dst, src) do { \ 752 char *str; \ 753 int i; \ 754 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 755 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 756 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 757 dst[i] = str[i]; \ 758 dst[i] = '\0'; \ 759} while (0) 760 761static int 762vesa_bios_init(void) 763{ 764 struct vesa_mode vmode; 765 struct vesa_info *buf; 766 video_info_t *p; 767 x86regs_t regs; 768 size_t bsize; 769 size_t msize; 770 void *vmbuf; 771 uint8_t *vbios; 772 uint32_t offs; 773 uint16_t vers; 774 int is_via_cle266; 775 int modes; 776 int i; 777 778 if (vesa_init_done) 779 return (0); 780 781 has_vesa_bios = FALSE; 782 vesa_adp_info = NULL; 783 vesa_bios_offs = VESA_BIOS_OFFSET; 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 vesa_bios_int10 = x86bios_get_intr(0x10); 791 if (vesa_bios_int10 == 0) { 792 if (vesa_bios_post() != 0) 793 return (1); 794 vesa_bios_int10 = x86bios_get_intr(0x10); 795 if (vesa_bios_int10 == 0) 796 return (1); 797 } 798 799 /* 800 * Shadow video ROM. 801 */ 802 offs = BIOS_SADDRTOLADDR(vesa_bios_int10); 803 if (vesa_shadow_rom) { 804 vbios = x86bios_get_orm(vesa_bios_offs); 805 if (vbios != NULL) { 806 vesa_bios_size = vbios[2] * 512; 807 vesa_bios = x86bios_alloc(&vesa_bios_offs, 808 vesa_bios_size, M_WAITOK); 809 memcpy(vesa_bios, vbios, vesa_bios_size); 810 offs = offs - VESA_BIOS_OFFSET + vesa_bios_offs; 811 offs = (X86BIOS_PHYSTOSEG(offs) << 16) + 812 X86BIOS_PHYSTOOFF(offs); 813 x86bios_set_intr(0x10, offs); 814 } else 815 printf("VESA: failed to shadow video ROM\n"); 816 } 817 if (bootverbose) 818 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 819 X86BIOS_PHYSTOSEG(offs), X86BIOS_PHYSTOOFF(offs)); 820 821 x86bios_init_regs(®s); 822 regs.R_AX = 0x4f00; 823 824 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 825 826 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 827 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 828 829 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 830 x86bios_intr(®s, 0x10); 831 832 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 833 goto fail; 834 835 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 836 bcopy(vmbuf, buf, sizeof(*buf)); 837 838 if (bootverbose) { 839 printf("VESA: information block\n"); 840 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 841 } 842 843 vers = buf->v_version = le16toh(buf->v_version); 844 buf->v_oemstr = le32toh(buf->v_oemstr); 845 buf->v_flags = le32toh(buf->v_flags); 846 buf->v_modetable = le32toh(buf->v_modetable); 847 buf->v_memsize = le16toh(buf->v_memsize); 848 buf->v_revision = le16toh(buf->v_revision); 849 buf->v_venderstr = le32toh(buf->v_venderstr); 850 buf->v_prodstr = le32toh(buf->v_prodstr); 851 buf->v_revstr = le32toh(buf->v_revstr); 852 853 if (vers < 0x0102) { 854 printf("VESA: VBE version %d.%d is not supported; " 855 "version 1.2 or later is required.\n", 856 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 857 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 858 goto fail; 859 } 860 861 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 862 if (vers >= 0x0200) { 863 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 864 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 865 VESA_STRCPY(vesa_revstr, buf->v_revstr); 866 } 867 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 868 sizeof(VESA_VIA_CLE266)) == 0; 869 870 if (buf->v_modetable == 0) 871 goto fail; 872 873 msize = (size_t)buf->v_memsize * 64 * 1024; 874 875 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 876 877 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 878 (vesa_vmodetab[i] != 0xffff); ++i) { 879 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 880 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 881 continue; 882 883 vmode.v_modeattr = le16toh(vmode.v_modeattr); 884 vmode.v_wgran = le16toh(vmode.v_wgran); 885 vmode.v_wsize = le16toh(vmode.v_wsize); 886 vmode.v_waseg = le16toh(vmode.v_waseg); 887 vmode.v_wbseg = le16toh(vmode.v_wbseg); 888 vmode.v_posfunc = le32toh(vmode.v_posfunc); 889 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 890 vmode.v_width = le16toh(vmode.v_width); 891 vmode.v_height = le16toh(vmode.v_height); 892 vmode.v_lfb = le32toh(vmode.v_lfb); 893 vmode.v_offscreen = le32toh(vmode.v_offscreen); 894 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 895 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 896 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 897 898 /* reject unsupported modes */ 899#if 0 900 if ((vmode.v_modeattr & 901 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 902 (V_MODESUPP | V_MODEOPTINFO)) 903 continue; 904#else 905 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 906#if VESA_DEBUG > 1 907 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 908 " attr = %x\n", 909 vmode.v_modeattr & V_MODEGRAPHICS ? 910 "graphics" : "text", 911 vmode.v_width, vmode.v_height, vmode.v_bpp, 912 vmode.v_modeattr); 913#endif 914 continue; 915 } 916#endif 917 918 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 919 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 920 bsize *= vmode.v_planes; 921 922 /* Does it have enough memory to support this mode? */ 923 if (msize < bsize) { 924#if VESA_DEBUG > 1 925 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 926 " attr = %x, not enough memory\n", 927 vmode.v_modeattr & V_MODEGRAPHICS ? 928 "graphics" : "text", 929 vmode.v_width, vmode.v_height, vmode.v_bpp, 930 vmode.v_modeattr); 931#endif 932 continue; 933 } 934 935 /* expand the array if necessary */ 936 if (modes >= vesa_vmode_max) { 937 vesa_vmode_max += MODE_TABLE_DELTA; 938 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 939 M_DEVBUF, M_WAITOK); 940#if VESA_DEBUG > 1 941 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 942 modes, vesa_vmode_max); 943#endif 944 if (modes > 0) { 945 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 946 free(vesa_vmode, M_DEVBUF); 947 } 948 vesa_vmode = p; 949 } 950 951#if VESA_DEBUG > 1 952 printf("Found VESA %s mode: %d x %d x %d bpp\n", 953 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 954 vmode.v_width, vmode.v_height, vmode.v_bpp); 955#endif 956 if (is_via_cle266) { 957 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 958 vmode.v_width &= 0xff; 959 vmode.v_waseg = 0xb8000 >> 4; 960 } 961 } 962 963 /* copy some fields */ 964 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 965 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 966 vesa_vmode[modes].vi_width = vmode.v_width; 967 vesa_vmode[modes].vi_height = vmode.v_height; 968 vesa_vmode[modes].vi_depth = vmode.v_bpp; 969 vesa_vmode[modes].vi_planes = vmode.v_planes; 970 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 971 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 972 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 973 /* XXX window B */ 974 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 975 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 976 if (vmode.v_modeattr & V_MODELFB) 977 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 978 vesa_vmode[modes].vi_buffer_size = bsize; 979 vesa_vmode[modes].vi_mem_model = 980 vesa_translate_mmodel(vmode.v_memmodel); 981 switch (vesa_vmode[modes].vi_mem_model) { 982 case V_INFO_MM_DIRECT: 983 if ((vmode.v_modeattr & V_MODELFB) != 0 && 984 vers >= 0x0300) { 985 vesa_vmode[modes].vi_pixel_fields[0] = 986 vmode.v_linredfieldpos; 987 vesa_vmode[modes].vi_pixel_fields[1] = 988 vmode.v_lingreenfieldpos; 989 vesa_vmode[modes].vi_pixel_fields[2] = 990 vmode.v_linbluefieldpos; 991 vesa_vmode[modes].vi_pixel_fields[3] = 992 vmode.v_linresfieldpos; 993 vesa_vmode[modes].vi_pixel_fsizes[0] = 994 vmode.v_linredmasksize; 995 vesa_vmode[modes].vi_pixel_fsizes[1] = 996 vmode.v_lingreenmasksize; 997 vesa_vmode[modes].vi_pixel_fsizes[2] = 998 vmode.v_linbluemasksize; 999 vesa_vmode[modes].vi_pixel_fsizes[3] = 1000 vmode.v_linresmasksize; 1001 } else { 1002 vesa_vmode[modes].vi_pixel_fields[0] = 1003 vmode.v_redfieldpos; 1004 vesa_vmode[modes].vi_pixel_fields[1] = 1005 vmode.v_greenfieldpos; 1006 vesa_vmode[modes].vi_pixel_fields[2] = 1007 vmode.v_bluefieldpos; 1008 vesa_vmode[modes].vi_pixel_fields[3] = 1009 vmode.v_resfieldpos; 1010 vesa_vmode[modes].vi_pixel_fsizes[0] = 1011 vmode.v_redmasksize; 1012 vesa_vmode[modes].vi_pixel_fsizes[1] = 1013 vmode.v_greenmasksize; 1014 vesa_vmode[modes].vi_pixel_fsizes[2] = 1015 vmode.v_bluemasksize; 1016 vesa_vmode[modes].vi_pixel_fsizes[3] = 1017 vmode.v_resmasksize; 1018 } 1019 /* FALLTHROUGH */ 1020 case V_INFO_MM_PACKED: 1021 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1022 break; 1023 } 1024 vesa_vmode[modes].vi_flags = 1025 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1026 1027 ++modes; 1028 } 1029 vesa_vmode[modes].vi_mode = EOT; 1030 1031 if (bootverbose) 1032 printf("VESA: %d mode(s) found\n", modes); 1033 1034 has_vesa_bios = (modes > 0); 1035 if (!has_vesa_bios) 1036 goto fail; 1037 1038 x86bios_free(vmbuf, sizeof(*buf)); 1039 1040 vesa_state_buf_size = vesa_bios_state_buf_size(); 1041 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1042 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1043 if (vesa_state_buf_size > 0) { 1044 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1045 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1046 } 1047 1048 return (0); 1049 1050fail: 1051 if (vesa_bios != NULL) { 1052 x86bios_set_intr(0x10, vesa_bios_int10); 1053 vesa_bios_offs = VESA_BIOS_OFFSET; 1054 x86bios_free(vesa_bios, vesa_bios_size); 1055 vesa_bios = NULL; 1056 } 1057 if (vmbuf != NULL) 1058 x86bios_free(vmbuf, sizeof(buf)); 1059 if (vesa_adp_info != NULL) { 1060 free(vesa_adp_info, M_DEVBUF); 1061 vesa_adp_info = NULL; 1062 } 1063 if (vesa_oemstr != NULL) { 1064 free(vesa_oemstr, M_DEVBUF); 1065 vesa_oemstr = NULL; 1066 } 1067 if (vesa_venderstr != NULL) { 1068 free(vesa_venderstr, M_DEVBUF); 1069 vesa_venderstr = NULL; 1070 } 1071 if (vesa_prodstr != NULL) { 1072 free(vesa_prodstr, M_DEVBUF); 1073 vesa_prodstr = NULL; 1074 } 1075 if (vesa_revstr != NULL) { 1076 free(vesa_revstr, M_DEVBUF); 1077 vesa_revstr = NULL; 1078 } 1079 return (1); 1080} 1081 1082static void 1083vesa_clear_modes(video_info_t *info, int color) 1084{ 1085 while (info->vi_mode != EOT) { 1086 if ((info->vi_flags & V_INFO_COLOR) != color) 1087 info->vi_mode = NA; 1088 ++info; 1089 } 1090} 1091 1092/* entry points */ 1093 1094static int 1095vesa_configure(int flags) 1096{ 1097 video_adapter_t *adp; 1098 int adapters; 1099 int error; 1100 int i; 1101 1102 if (vesa_init_done) 1103 return (0); 1104 if (flags & VIO_PROBE_ONLY) 1105 return (0); 1106 1107 /* 1108 * If the VESA module has already been loaded, abort loading 1109 * the module this time. 1110 */ 1111 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1112 if (adp->va_flags & V_ADP_VESA) 1113 return (ENXIO); 1114 if (adp->va_type == KD_VGA) 1115 break; 1116 } 1117 1118 /* 1119 * The VGA adapter is not found. This is because either 1120 * 1) the VGA driver has not been initialized, or 2) the VGA card 1121 * is not present. If 1) is the case, we shall defer 1122 * initialization for now and try again later. 1123 */ 1124 if (adp == NULL) { 1125 vga_sub_configure = vesa_configure; 1126 return (ENODEV); 1127 } 1128 1129 /* count number of registered adapters */ 1130 for (++i; vid_get_adapter(i) != NULL; ++i) 1131 ; 1132 adapters = i; 1133 1134 /* call VESA BIOS */ 1135 vesa_adp = adp; 1136 if (vesa_bios_init()) { 1137 vesa_adp = NULL; 1138 return (ENXIO); 1139 } 1140 vesa_adp->va_flags |= V_ADP_VESA; 1141 1142 /* remove conflicting modes if we have more than one adapter */ 1143 if (adapters > 1) { 1144 vesa_clear_modes(vesa_vmode, 1145 (vesa_adp->va_flags & V_ADP_COLOR) ? 1146 V_INFO_COLOR : 0); 1147 } 1148 1149 if ((error = vesa_load_ioctl()) == 0) { 1150 prevvidsw = vidsw[vesa_adp->va_index]; 1151 vidsw[vesa_adp->va_index] = &vesavidsw; 1152 vesa_init_done = TRUE; 1153 } else { 1154 vesa_adp = NULL; 1155 return (error); 1156 } 1157 1158 return (0); 1159} 1160 1161#if 0 1162static int 1163vesa_nop(void) 1164{ 1165 1166 return (0); 1167} 1168#endif 1169 1170static int 1171vesa_error(void) 1172{ 1173 1174 return (1); 1175} 1176 1177static int 1178vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1179{ 1180 1181 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1182} 1183 1184static int 1185vesa_init(int unit, video_adapter_t *adp, int flags) 1186{ 1187 1188 return ((*prevvidsw->init)(unit, adp, flags)); 1189} 1190 1191static int 1192vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1193{ 1194 int i; 1195 1196 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1197 return (0); 1198 1199 if (adp != vesa_adp) 1200 return (1); 1201 1202 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1203 vesa_adp->va_flags & V_ADP_COLOR, mode); 1204 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1205 if (vesa_vmode[i].vi_mode == NA) 1206 continue; 1207 if (vesa_vmode[i].vi_mode == mode) { 1208 *info = vesa_vmode[i]; 1209 return (0); 1210 } 1211 } 1212 return (1); 1213} 1214 1215static int 1216vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1217{ 1218 int i; 1219 1220 if ((*prevvidsw->query_mode)(adp, info) == 0) 1221 return (0); 1222 if (adp != vesa_adp) 1223 return (ENODEV); 1224 1225 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1226 if ((info->vi_width != 0) 1227 && (info->vi_width != vesa_vmode[i].vi_width)) 1228 continue; 1229 if ((info->vi_height != 0) 1230 && (info->vi_height != vesa_vmode[i].vi_height)) 1231 continue; 1232 if ((info->vi_cwidth != 0) 1233 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1234 continue; 1235 if ((info->vi_cheight != 0) 1236 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1237 continue; 1238 if ((info->vi_depth != 0) 1239 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1240 continue; 1241 if ((info->vi_planes != 0) 1242 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1243 continue; 1244 /* pixel format, memory model */ 1245 if ((info->vi_flags != 0) 1246 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1247 continue; 1248 *info = vesa_vmode[i]; 1249 return (0); 1250 } 1251 return (ENODEV); 1252} 1253 1254static int 1255vesa_set_mode(video_adapter_t *adp, int mode) 1256{ 1257 video_info_t info; 1258 1259 if (adp != vesa_adp) 1260 return ((*prevvidsw->set_mode)(adp, mode)); 1261 1262 mode = vesa_map_gen_mode_num(adp->va_type, 1263 adp->va_flags & V_ADP_COLOR, mode); 1264#if VESA_DEBUG > 0 1265 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1266 adp->va_mode, adp->va_mode, mode, mode); 1267#endif 1268 /* 1269 * If the current mode is a VESA mode and the new mode is not, 1270 * restore the state of the adapter first by setting one of the 1271 * standard VGA mode, so that non-standard, extended SVGA registers 1272 * are set to the state compatible with the standard VGA modes. 1273 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1274 * the new mode correctly. 1275 */ 1276 if (VESA_MODE(adp->va_mode)) { 1277 if (!VESA_MODE(mode) && 1278 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1279 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1280 vesa_bios_set_dac(6); 1281 adp->va_flags &= ~V_ADP_DAC8; 1282 } 1283 int10_set_mode(adp->va_initial_bios_mode); 1284 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1285 pmap_unmapdev(adp->va_buffer, 1286 vesa_adp_info->v_memsize * 64 * 1024); 1287 /* 1288 * Once (*prevvidsw->get_info)() succeeded, 1289 * (*prevvidsw->set_mode)() below won't fail... 1290 */ 1291 } 1292 } 1293 1294 /* we may not need to handle this mode after all... */ 1295 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1296 return (0); 1297 1298 /* is the new mode supported? */ 1299 if (vesa_get_info(adp, mode, &info)) 1300 return (1); 1301 /* assert(VESA_MODE(mode)); */ 1302 1303#if VESA_DEBUG > 0 1304 printf("VESA: about to set a VESA mode...\n"); 1305#endif 1306 /* don't use the linear frame buffer for text modes. XXX */ 1307 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1308 info.vi_flags &= ~V_INFO_LINEAR; 1309 1310 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1311 return (1); 1312 1313 /* Palette format is reset by the above VBE function call. */ 1314 adp->va_flags &= ~V_ADP_DAC8; 1315 1316 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1317 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1318 vesa_bios_set_dac(8) > 6) 1319 adp->va_flags |= V_ADP_DAC8; 1320 1321 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1322 pmap_unmapdev(adp->va_buffer, 1323 vesa_adp_info->v_memsize * 64 * 1024); 1324 1325#if VESA_DEBUG > 0 1326 printf("VESA: mode set!\n"); 1327#endif 1328 vesa_adp->va_mode = mode; 1329 vesa_adp->va_flags &= ~V_ADP_COLOR; 1330 vesa_adp->va_flags |= 1331 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1332 vesa_adp->va_crtc_addr = 1333 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1334 1335 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1336 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1337 vesa_adp->va_line_width /= info.vi_planes; 1338 1339#ifdef MODE_TABLE_BROKEN 1340 /* If VBE function returns bigger bytes per scan line, use it. */ 1341 { 1342 int bpsl = vesa_bios_get_line_length(); 1343 if (bpsl > vesa_adp->va_line_width) { 1344 vesa_adp->va_line_width = bpsl; 1345 info.vi_buffer_size = bpsl * info.vi_height; 1346 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1347 info.vi_buffer_size *= info.vi_planes; 1348 } 1349 } 1350#endif 1351 1352 if (info.vi_flags & V_INFO_LINEAR) { 1353#if VESA_DEBUG > 1 1354 printf("VESA: setting up LFB\n"); 1355#endif 1356 vesa_adp->va_buffer = 1357 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1358 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING); 1359 vesa_adp->va_window = vesa_adp->va_buffer; 1360 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1361 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1362 } else { 1363 vesa_adp->va_buffer = 0; 1364 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1365 vesa_adp->va_window_size = info.vi_window_size; 1366 vesa_adp->va_window_gran = info.vi_window_gran; 1367 } 1368 vesa_adp->va_buffer_size = info.vi_buffer_size; 1369 vesa_adp->va_window_orig = 0; 1370 vesa_adp->va_disp_start.x = 0; 1371 vesa_adp->va_disp_start.y = 0; 1372#if VESA_DEBUG > 0 1373 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1374 info.vi_width, vesa_adp->va_line_width); 1375#endif 1376 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1377 1378 /* move hardware cursor out of the way */ 1379 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1380 1381 return (0); 1382} 1383 1384static int 1385vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1386 u_char *data, int ch, int count) 1387{ 1388 1389 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1390 ch, count)); 1391} 1392 1393static int 1394vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1395 u_char *data, int ch, int count) 1396{ 1397 1398 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1399 ch, count)); 1400} 1401 1402static int 1403vesa_show_font(video_adapter_t *adp, int page) 1404{ 1405 1406 return ((*prevvidsw->show_font)(adp, page)); 1407} 1408 1409static int 1410vesa_save_palette(video_adapter_t *adp, u_char *palette) 1411{ 1412 int bits; 1413 1414 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1415 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1416 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1417 return (0); 1418 } 1419 1420 return ((*prevvidsw->save_palette)(adp, palette)); 1421} 1422 1423static int 1424vesa_load_palette(video_adapter_t *adp, u_char *palette) 1425{ 1426 int bits; 1427 1428 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1429 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1430 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1431 return (0); 1432 } 1433 1434 return ((*prevvidsw->load_palette)(adp, palette)); 1435} 1436 1437static int 1438vesa_set_border(video_adapter_t *adp, int color) 1439{ 1440 1441 return ((*prevvidsw->set_border)(adp, color)); 1442} 1443 1444static int 1445vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1446{ 1447 1448 if (adp != vesa_adp) 1449 return ((*prevvidsw->save_state)(adp, p, size)); 1450 1451 if (vesa_state_buf_size == 0) 1452 return (1); 1453 if (size == 0) 1454 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1455 if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1456 return (1); 1457 1458 ((adp_state_t *)p)->sig = V_STATE_SIG; 1459 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1460 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1461} 1462 1463static int 1464vesa_load_state(video_adapter_t *adp, void *p) 1465{ 1466 1467 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1468 return ((*prevvidsw->load_state)(adp, p)); 1469 1470 if (vesa_state_buf_size == 0) 1471 return (1); 1472 1473 /* Try BIOS POST to restore a sane state. */ 1474 (void)vesa_bios_post(); 1475 (void)int10_set_mode(adp->va_initial_bios_mode); 1476 (void)vesa_set_mode(adp, adp->va_mode); 1477 1478 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1479} 1480 1481#if 0 1482static int 1483vesa_get_origin(video_adapter_t *adp, off_t *offset) 1484{ 1485 x86regs_t regs; 1486 1487 x86bios_init_regs(®s); 1488 regs.R_AX = 0x4f05; 1489 regs.R_BL = 0x10; 1490 1491 x86bios_intr(®s, 0x10); 1492 1493 if (regs.R_AX != 0x004f) 1494 return (1); 1495 *offset = regs.DX * adp->va_window_gran; 1496 1497 return (0); 1498} 1499#endif 1500 1501static int 1502vesa_set_origin(video_adapter_t *adp, off_t offset) 1503{ 1504 x86regs_t regs; 1505 1506 /* 1507 * This function should return as quickly as possible to 1508 * maintain good performance of the system. For this reason, 1509 * error checking is kept minimal and let the VESA BIOS to 1510 * detect error. 1511 */ 1512 if (adp != vesa_adp) 1513 return ((*prevvidsw->set_win_org)(adp, offset)); 1514 1515 /* if this is a linear frame buffer, do nothing */ 1516 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1517 return (0); 1518 /* XXX */ 1519 if (adp->va_window_gran == 0) 1520 return (1); 1521 1522 x86bios_init_regs(®s); 1523 regs.R_AX = 0x4f05; 1524 regs.R_DX = offset / adp->va_window_gran; 1525 1526 x86bios_intr(®s, 0x10); 1527 1528 if (regs.R_AX != 0x004f) 1529 return (1); 1530 1531 x86bios_init_regs(®s); 1532 regs.R_AX = 0x4f05; 1533 regs.R_BL = 1; 1534 regs.R_DX = offset / adp->va_window_gran; 1535 x86bios_intr(®s, 0x10); 1536 1537 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1538 return (0); /* XXX */ 1539} 1540 1541static int 1542vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1543{ 1544 1545 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1546} 1547 1548static int 1549vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1550{ 1551 1552 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1553} 1554 1555static int 1556vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1557 int celsize, int blink) 1558{ 1559 1560 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1561 blink)); 1562} 1563 1564static int 1565vesa_blank_display(video_adapter_t *adp, int mode) 1566{ 1567 1568 /* XXX: use VESA DPMS */ 1569 return ((*prevvidsw->blank_display)(adp, mode)); 1570} 1571 1572static int 1573vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1574 int prot, vm_memattr_t *memattr) 1575{ 1576 1577#if VESA_DEBUG > 0 1578 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1579 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1580#endif 1581 1582 if ((adp == vesa_adp) && 1583 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1584 /* va_window_size == va_buffer_size/vi_planes */ 1585 /* XXX: is this correct? */ 1586 if (offset > adp->va_window_size - PAGE_SIZE) 1587 return (-1); 1588 *paddr = adp->va_info.vi_buffer + offset; 1589 return (0); 1590 } 1591 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1592} 1593 1594static int 1595vesa_clear(video_adapter_t *adp) 1596{ 1597 1598 return ((*prevvidsw->clear)(adp)); 1599} 1600 1601static int 1602vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1603{ 1604 1605 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1606} 1607 1608static int 1609vesa_bitblt(video_adapter_t *adp,...) 1610{ 1611 1612 /* FIXME */ 1613 return (1); 1614} 1615 1616static int 1617get_palette(video_adapter_t *adp, int base, int count, 1618 u_char *red, u_char *green, u_char *blue, u_char *trans) 1619{ 1620 u_char *r; 1621 u_char *g; 1622 u_char *b; 1623 int bits; 1624 int error; 1625 1626 if (base < 0 || base >= 256 || count < 0 || count > 256) 1627 return (1); 1628 if ((base + count) > 256) 1629 return (1); 1630 if (!VESA_MODE(adp->va_mode)) 1631 return (1); 1632 1633 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1634 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1635 g = r + count; 1636 b = g + count; 1637 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1638 if (error == 0) { 1639 copyout(r, red, count); 1640 copyout(g, green, count); 1641 copyout(b, blue, count); 1642 if (trans != NULL) { 1643 bzero(r, count); 1644 copyout(r, trans, count); 1645 } 1646 } 1647 free(r, M_DEVBUF); 1648 1649 return (error); 1650} 1651 1652static int 1653set_palette(video_adapter_t *adp, int base, int count, 1654 u_char *red, u_char *green, u_char *blue, u_char *trans) 1655{ 1656 u_char *r; 1657 u_char *g; 1658 u_char *b; 1659 int bits; 1660 int error; 1661 1662 if (base < 0 || base >= 256 || count < 0 || count > 256) 1663 return (1); 1664 if ((base + count) > 256) 1665 return (1); 1666 if (!VESA_MODE(adp->va_mode)) 1667 return (1); 1668 1669 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1670 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1671 g = r + count; 1672 b = g + count; 1673 copyin(red, r, count); 1674 copyin(green, g, count); 1675 copyin(blue, b, count); 1676 1677 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1678 free(r, M_DEVBUF); 1679 1680 return (error); 1681} 1682 1683static int 1684vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1685{ 1686 int bytes; 1687 1688 if (adp != vesa_adp) 1689 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1690 1691 switch (cmd) { 1692 case FBIO_SETWINORG: /* set frame buffer window origin */ 1693 if (!VESA_MODE(adp->va_mode)) 1694 return (*prevvidsw->ioctl)(adp, cmd, arg); 1695 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1696 1697 case FBIO_SETDISPSTART: /* set display start address */ 1698 if (!VESA_MODE(adp->va_mode)) 1699 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1700 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1701 ((video_display_start_t *)arg)->y)) 1702 return (ENODEV); 1703 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1704 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1705 return (0); 1706 1707 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1708 if (!VESA_MODE(adp->va_mode)) 1709 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1710 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1711 return (ENODEV); 1712 adp->va_line_width = bytes; 1713#if VESA_DEBUG > 1 1714 printf("new line width:%d\n", adp->va_line_width); 1715#endif 1716 return (0); 1717 1718 case FBIO_GETPALETTE: /* get color palette */ 1719 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1720 ((video_color_palette_t *)arg)->count, 1721 ((video_color_palette_t *)arg)->red, 1722 ((video_color_palette_t *)arg)->green, 1723 ((video_color_palette_t *)arg)->blue, 1724 ((video_color_palette_t *)arg)->transparent)) 1725 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1726 return (0); 1727 1728 1729 case FBIO_SETPALETTE: /* set color palette */ 1730 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1731 ((video_color_palette_t *)arg)->count, 1732 ((video_color_palette_t *)arg)->red, 1733 ((video_color_palette_t *)arg)->green, 1734 ((video_color_palette_t *)arg)->blue, 1735 ((video_color_palette_t *)arg)->transparent)) 1736 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1737 return (0); 1738 1739 case FBIOGETCMAP: /* get color palette */ 1740 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1741 ((struct fbcmap *)arg)->count, 1742 ((struct fbcmap *)arg)->red, 1743 ((struct fbcmap *)arg)->green, 1744 ((struct fbcmap *)arg)->blue, NULL)) 1745 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1746 return (0); 1747 1748 case FBIOPUTCMAP: /* set color palette */ 1749 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1750 ((struct fbcmap *)arg)->count, 1751 ((struct fbcmap *)arg)->red, 1752 ((struct fbcmap *)arg)->green, 1753 ((struct fbcmap *)arg)->blue, NULL)) 1754 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1755 return (0); 1756 1757 default: 1758 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1759 } 1760} 1761 1762static int 1763vesa_diag(video_adapter_t *adp, int level) 1764{ 1765 int error; 1766 1767 /* call the previous handler first */ 1768 error = (*prevvidsw->diag)(adp, level); 1769 if (error) 1770 return (error); 1771 1772 if (adp != vesa_adp) 1773 return (1); 1774 1775 if (level <= 0) 1776 return (0); 1777 1778 return (0); 1779} 1780 1781static int 1782vesa_bios_info(int level) 1783{ 1784#if VESA_DEBUG > 1 1785 struct vesa_mode vmode; 1786 int i; 1787#endif 1788 uint16_t vers; 1789 1790 vers = vesa_adp_info->v_version; 1791 1792 if (bootverbose) { 1793 /* general adapter information */ 1794 printf( 1795 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1796 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1797 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1798 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1799 vesa_vmodetab, vesa_adp_info->v_modetable); 1800 1801 /* OEM string */ 1802 if (vesa_oemstr != NULL) 1803 printf("VESA: %s\n", vesa_oemstr); 1804 } 1805 1806 if (level <= 0) 1807 return (0); 1808 1809 if (vers >= 0x0200 && bootverbose) { 1810 /* vender name, product name, product revision */ 1811 printf("VESA: %s %s %s\n", 1812 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1813 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1814 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1815 } 1816 1817#if VESA_DEBUG > 1 1818 /* mode information */ 1819 for (i = 0; 1820 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1821 && (vesa_vmodetab[i] != 0xffff); ++i) { 1822 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1823 continue; 1824 1825 /* print something for diagnostic purpose */ 1826 printf("VESA: mode:0x%03x, flags:0x%04x", 1827 vesa_vmodetab[i], vmode.v_modeattr); 1828 if (vmode.v_modeattr & V_MODEOPTINFO) { 1829 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1830 printf(", G %dx%dx%d %d, ", 1831 vmode.v_width, vmode.v_height, 1832 vmode.v_bpp, vmode.v_planes); 1833 } else { 1834 printf(", T %dx%d, ", 1835 vmode.v_width, vmode.v_height); 1836 } 1837 printf("font:%dx%d, ", 1838 vmode.v_cwidth, vmode.v_cheight); 1839 printf("pages:%d, mem:%d", 1840 vmode.v_ipages + 1, vmode.v_memmodel); 1841 } 1842 if (vmode.v_modeattr & V_MODELFB) { 1843 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1844 vmode.v_lfb, vmode.v_offscreen, 1845 vmode.v_offscreensize*1024); 1846 } 1847 printf("\n"); 1848 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1849 vmode.v_waseg, vmode.v_waattr, 1850 vmode.v_wbseg, vmode.v_wbattr); 1851 printf("size:%dk, gran:%dk\n", 1852 vmode.v_wsize, vmode.v_wgran); 1853 } 1854#endif /* VESA_DEBUG > 1 */ 1855 1856 return (0); 1857} 1858 1859/* module loading */ 1860 1861static int 1862vesa_load(void) 1863{ 1864 int error; 1865 1866 if (vesa_init_done) 1867 return (0); 1868 1869 mtx_init(&vesa_lock, "VESA lock", NULL, MTX_DEF); 1870 1871 /* locate a VGA adapter */ 1872 vesa_adp = NULL; 1873 error = vesa_configure(0); 1874 1875 if (error == 0) 1876 vesa_bios_info(bootverbose); 1877 1878 return (error); 1879} 1880 1881static int 1882vesa_unload(void) 1883{ 1884 u_char palette[256*3]; 1885 int error; 1886 1887 /* if the adapter is currently in a VESA mode, don't unload */ 1888 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1889 return (EBUSY); 1890 /* 1891 * FIXME: if there is at least one vty which is in a VESA mode, 1892 * we shouldn't be unloading! XXX 1893 */ 1894 1895 if ((error = vesa_unload_ioctl()) == 0) { 1896 if (vesa_adp != NULL) { 1897 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1898 vesa_bios_save_palette(0, 256, palette, 8); 1899 vesa_bios_set_dac(6); 1900 vesa_adp->va_flags &= ~V_ADP_DAC8; 1901 vesa_bios_load_palette(0, 256, palette, 6); 1902 } 1903 vesa_adp->va_flags &= ~V_ADP_VESA; 1904 vidsw[vesa_adp->va_index] = prevvidsw; 1905 } 1906 } 1907 1908 if (vesa_bios != NULL) { 1909 x86bios_set_intr(0x10, vesa_bios_int10); 1910 x86bios_free(vesa_bios, vesa_bios_size); 1911 } 1912 if (vesa_adp_info != NULL) 1913 free(vesa_adp_info, M_DEVBUF); 1914 if (vesa_oemstr != NULL) 1915 free(vesa_oemstr, M_DEVBUF); 1916 if (vesa_venderstr != NULL) 1917 free(vesa_venderstr, M_DEVBUF); 1918 if (vesa_prodstr != NULL) 1919 free(vesa_prodstr, M_DEVBUF); 1920 if (vesa_revstr != NULL) 1921 free(vesa_revstr, M_DEVBUF); 1922 if (vesa_vmode != &vesa_vmode_empty) 1923 free(vesa_vmode, M_DEVBUF); 1924 if (vesa_palette != NULL) 1925 x86bios_free(vesa_palette, 1926 VESA_PALETTE_SIZE + vesa_state_buf_size); 1927 1928 mtx_destroy(&vesa_lock); 1929 1930 return (error); 1931} 1932 1933static int 1934vesa_mod_event(module_t mod, int type, void *data) 1935{ 1936 1937 switch (type) { 1938 case MOD_LOAD: 1939 return (vesa_load()); 1940 case MOD_UNLOAD: 1941 return (vesa_unload()); 1942 } 1943 return (EOPNOTSUPP); 1944} 1945 1946static moduledata_t vesa_mod = { 1947 "vesa", 1948 vesa_mod_event, 1949 NULL, 1950}; 1951 1952DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1953MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1954 1955#endif /* VGA_NO_MODE_CHANGE */ 1956