1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 5 * Copyright (c) 2009-2013 Jung-uk Kim <jkim@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer as 13 * the first lines of this file unmodified. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD$"); 32 33#include "opt_vga.h" 34#include "opt_vesa.h" 35 36#ifndef VGA_NO_MODE_CHANGE 37 38#include <sys/param.h> 39#include <sys/bus.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> 42#include <sys/lock.h> 43#include <sys/module.h> 44#include <sys/malloc.h> 45#include <sys/mutex.h> 46#include <sys/fbio.h> 47#include <sys/sysctl.h> 48 49#include <vm/vm.h> 50#include <vm/vm_extern.h> 51#include <vm/vm_kern.h> 52#include <vm/vm_param.h> 53#include <vm/pmap.h> 54 55#include <machine/pc/bios.h> 56#include <dev/fb/vesa.h> 57 58#include <dev/fb/fbreg.h> 59#include <dev/fb/vgareg.h> 60 61#include <dev/pci/pcivar.h> 62 63#include <isa/isareg.h> 64 65#include <compat/x86bios/x86bios.h> 66 67#define VESA_BIOS_OFFSET 0xc0000 68#define VESA_PALETTE_SIZE (256 * 4) 69#define VESA_VIA_CLE266 "VIA CLE266\r\n" 70 71#ifndef VESA_DEBUG 72#define VESA_DEBUG 0 73#endif 74 75/* VESA video adapter state buffer stub */ 76struct adp_state { 77 int sig; 78#define V_STATE_SIG 0x61736576 79 u_char regs[1]; 80}; 81typedef struct adp_state adp_state_t; 82 83static struct mtx vesa_lock; 84MTX_SYSINIT(vesa_lock, &vesa_lock, "VESA lock", MTX_DEF); 85 86static int vesa_state; 87static void *vesa_state_buf; 88static uint32_t vesa_state_buf_offs; 89static size_t vesa_state_buf_size; 90 91static u_char *vesa_palette; 92static uint32_t vesa_palette_offs; 93 94static void *vesa_vmem_buf; 95static size_t vesa_vmem_max; 96 97static void *vesa_bios; 98static uint32_t vesa_bios_offs; 99static uint32_t vesa_bios_int10; 100static size_t vesa_bios_size; 101 102/* VESA video adapter */ 103static video_adapter_t *vesa_adp; 104 105static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 106 "VESA debugging"); 107static int vesa_shadow_rom; 108SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 109 0, "Enable video BIOS shadow"); 110 111/* VESA functions */ 112#if 0 113static int vesa_nop(void); 114#endif 115static int vesa_error(void); 116static vi_probe_t vesa_probe; 117static vi_init_t vesa_init; 118static vi_get_info_t vesa_get_info; 119static vi_query_mode_t vesa_query_mode; 120static vi_set_mode_t vesa_set_mode; 121static vi_save_font_t vesa_save_font; 122static vi_load_font_t vesa_load_font; 123static vi_show_font_t vesa_show_font; 124static vi_save_palette_t vesa_save_palette; 125static vi_load_palette_t vesa_load_palette; 126static vi_set_border_t vesa_set_border; 127static vi_save_state_t vesa_save_state; 128static vi_load_state_t vesa_load_state; 129static vi_set_win_org_t vesa_set_origin; 130static vi_read_hw_cursor_t vesa_read_hw_cursor; 131static vi_set_hw_cursor_t vesa_set_hw_cursor; 132static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 133static vi_blank_display_t vesa_blank_display; 134static vi_mmap_t vesa_mmap; 135static vi_ioctl_t vesa_ioctl; 136static vi_clear_t vesa_clear; 137static vi_fill_rect_t vesa_fill_rect; 138static vi_bitblt_t vesa_bitblt; 139static vi_diag_t vesa_diag; 140static int vesa_bios_info(int level); 141 142static video_switch_t vesavidsw = { 143 vesa_probe, 144 vesa_init, 145 vesa_get_info, 146 vesa_query_mode, 147 vesa_set_mode, 148 vesa_save_font, 149 vesa_load_font, 150 vesa_show_font, 151 vesa_save_palette, 152 vesa_load_palette, 153 vesa_set_border, 154 vesa_save_state, 155 vesa_load_state, 156 vesa_set_origin, 157 vesa_read_hw_cursor, 158 vesa_set_hw_cursor, 159 vesa_set_hw_cursor_shape, 160 vesa_blank_display, 161 vesa_mmap, 162 vesa_ioctl, 163 vesa_clear, 164 vesa_fill_rect, 165 vesa_bitblt, 166 vesa_error, 167 vesa_error, 168 vesa_diag, 169}; 170 171static video_switch_t *prevvidsw; 172 173/* VESA BIOS video modes */ 174#define VESA_MAXMODES 64 175#define EOT (-1) 176#define NA (-2) 177 178#define MODE_TABLE_DELTA 8 179 180static int vesa_vmode_max; 181static video_info_t *vesa_vmode; 182 183static int vesa_init_done; 184static struct vesa_info *vesa_adp_info; 185static u_int16_t *vesa_vmodetab; 186static char *vesa_oemstr; 187static char *vesa_venderstr; 188static char *vesa_prodstr; 189static char *vesa_revstr; 190 191/* local macros and functions */ 192#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 193 194static int int10_set_mode(int mode); 195static int vesa_bios_post(void); 196static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 197static int vesa_bios_set_mode(int mode); 198#if 0 199static int vesa_bios_get_dac(void); 200#endif 201static int vesa_bios_set_dac(int bits); 202static int vesa_bios_save_palette(int start, int colors, u_char *palette, 203 int bits); 204static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 205 u_char *b, int bits); 206static int vesa_bios_load_palette(int start, int colors, u_char *palette, 207 int bits); 208static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 209 u_char *b, int bits); 210#define STATE_SIZE 0 211#define STATE_SAVE 1 212#define STATE_LOAD 2 213static size_t vesa_bios_state_buf_size(int); 214static int vesa_bios_save_restore(int code, void *p); 215#ifdef MODE_TABLE_BROKEN 216static int vesa_bios_get_line_length(void); 217#endif 218static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 219#if 0 220static int vesa_bios_get_start(int *x, int *y); 221#endif 222static int vesa_bios_set_start(int x, int y); 223static int vesa_map_gen_mode_num(int type, int color, int mode); 224static int vesa_translate_flags(u_int16_t vflags); 225static int vesa_translate_mmodel(u_int8_t vmodel); 226static int vesa_get_bpscanline(struct vesa_mode *vmode); 227static int vesa_bios_init(void); 228static void vesa_bios_uninit(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 size_t 512vesa_bios_state_buf_size(int state) 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; 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 = vesa_state; 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 if (regs.R_AX == 0x004f) 550 bcopy(vesa_state_buf, p, vesa_state_buf_size); 551 break; 552 case STATE_LOAD: 553 bcopy(p, vesa_state_buf, vesa_state_buf_size); 554 x86bios_intr(®s, 0x10); 555 break; 556 } 557 mtx_unlock(&vesa_lock); 558 559 return (regs.R_AX != 0x004f); 560} 561 562#ifdef MODE_TABLE_BROKEN 563static int 564vesa_bios_get_line_length(void) 565{ 566 x86regs_t regs; 567 568 x86bios_init_regs(®s); 569 regs.R_AX = 0x4f06; 570 regs.R_BL = 1; 571 572 x86bios_intr(®s, 0x10); 573 574 if (regs.R_AX != 0x004f) 575 return (-1); 576 577 return (regs.R_BX); 578} 579#endif 580 581static int 582vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 583{ 584 x86regs_t regs; 585 586 x86bios_init_regs(®s); 587 regs.R_AX = 0x4f06; 588 /* regs.R_BL = 0; */ 589 regs.R_CX = pixel; 590 591 x86bios_intr(®s, 0x10); 592 593#if VESA_DEBUG > 1 594 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 595#endif 596 if (regs.R_AX != 0x004f) 597 return (-1); 598 599 if (bytes != NULL) 600 *bytes = regs.R_BX; 601 if (lines != NULL) 602 *lines = regs.R_DX; 603 604 return (0); 605} 606 607#if 0 608static int 609vesa_bios_get_start(int *x, int *y) 610{ 611 x86regs_t regs; 612 613 x86bios_init_regs(®s); 614 regs.R_AX = 0x4f07; 615 regs.R_BL = 1; 616 617 x86bios_intr(®s, 0x10); 618 619 if (regs.R_AX != 0x004f) 620 return (-1); 621 622 *x = regs.R_CX; 623 *y = regs.R_DX; 624 625 return (0); 626} 627#endif 628 629static int 630vesa_bios_set_start(int x, int y) 631{ 632 x86regs_t regs; 633 634 x86bios_init_regs(®s); 635 regs.R_AX = 0x4f07; 636 regs.R_BL = 0x80; 637 regs.R_CX = x; 638 regs.R_DX = y; 639 640 x86bios_intr(®s, 0x10); 641 642 return (regs.R_AX != 0x004f); 643} 644 645/* map a generic video mode to a known mode */ 646static int 647vesa_map_gen_mode_num(int type, int color, int mode) 648{ 649 static struct { 650 int from; 651 int to; 652 } mode_map[] = { 653 { M_TEXT_132x25, M_VESA_C132x25 }, 654 { M_TEXT_132x43, M_VESA_C132x43 }, 655 { M_TEXT_132x50, M_VESA_C132x50 }, 656 { M_TEXT_132x60, M_VESA_C132x60 }, 657 }; 658 int i; 659 660 for (i = 0; i < nitems(mode_map); ++i) { 661 if (mode_map[i].from == mode) 662 return (mode_map[i].to); 663 } 664 return (mode); 665} 666 667static int 668vesa_translate_flags(u_int16_t vflags) 669{ 670 static struct { 671 u_int16_t mask; 672 int set; 673 int reset; 674 } ftable[] = { 675 { V_MODECOLOR, V_INFO_COLOR, 0 }, 676 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 677 { V_MODELFB, V_INFO_LINEAR, 0 }, 678 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 679 }; 680 int flags; 681 int i; 682 683 for (flags = 0, i = 0; i < nitems(ftable); ++i) { 684 flags |= (vflags & ftable[i].mask) ? 685 ftable[i].set : ftable[i].reset; 686 } 687 return (flags); 688} 689 690static int 691vesa_translate_mmodel(u_int8_t vmodel) 692{ 693 static struct { 694 u_int8_t vmodel; 695 int mmodel; 696 } mtable[] = { 697 { V_MMTEXT, V_INFO_MM_TEXT }, 698 { V_MMCGA, V_INFO_MM_CGA }, 699 { V_MMHGC, V_INFO_MM_HGC }, 700 { V_MMEGA, V_INFO_MM_PLANAR }, 701 { V_MMPACKED, V_INFO_MM_PACKED }, 702 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 703 }; 704 int i; 705 706 for (i = 0; mtable[i].mmodel >= 0; ++i) { 707 if (mtable[i].vmodel == vmodel) 708 return (mtable[i].mmodel); 709 } 710 return (V_INFO_MM_OTHER); 711} 712 713static int 714vesa_get_bpscanline(struct vesa_mode *vmode) 715{ 716 int bpsl; 717 718 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 719 /* Find the minimum length. */ 720 switch (vmode->v_bpp / vmode->v_planes) { 721 case 1: 722 bpsl = vmode->v_width / 8; 723 break; 724 case 2: 725 bpsl = vmode->v_width / 4; 726 break; 727 case 4: 728 bpsl = vmode->v_width / 2; 729 break; 730 default: 731 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 732 bpsl /= vmode->v_planes; 733 break; 734 } 735 736 /* Use VBE 3.0 information if it looks sane. */ 737 if ((vmode->v_modeattr & V_MODELFB) != 0 && 738 vesa_adp_info->v_version >= 0x0300 && 739 vmode->v_linbpscanline > bpsl) 740 return (vmode->v_linbpscanline); 741 742 /* Return the minimum if the mode table looks absurd. */ 743 if (vmode->v_bpscanline < bpsl) 744 return (bpsl); 745 } 746 747 return (vmode->v_bpscanline); 748} 749 750#define VESA_MAXSTR 256 751 752#define VESA_STRCPY(dst, src) do { \ 753 char *str; \ 754 int i; \ 755 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 756 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 757 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 758 dst[i] = str[i]; \ 759 dst[i] = '\0'; \ 760} while (0) 761 762static int 763vesa_bios_init(void) 764{ 765 struct vesa_mode vmode; 766 struct vesa_info *buf; 767 video_info_t *p; 768 x86regs_t regs; 769 size_t bsize; 770 size_t msize; 771 void *vmbuf; 772 uint8_t *vbios; 773 uint32_t offs; 774 uint16_t vers; 775 int is_via_cle266; 776 int modes; 777 int i; 778 779 if (vesa_init_done) 780 return (0); 781 782 vesa_bios_offs = VESA_BIOS_OFFSET; 783 784 /* 785 * If the VBE real mode interrupt vector is not found, try BIOS POST. 786 */ 787 vesa_bios_int10 = x86bios_get_intr(0x10); 788 if (vesa_bios_int10 == 0) { 789 if (vesa_bios_post() != 0) 790 return (1); 791 vesa_bios_int10 = x86bios_get_intr(0x10); 792 if (vesa_bios_int10 == 0) 793 return (1); 794 } 795 796 /* 797 * Shadow video ROM. 798 */ 799 offs = vesa_bios_int10; 800 if (vesa_shadow_rom) { 801 vbios = x86bios_get_orm(vesa_bios_offs); 802 if (vbios != NULL) { 803 vesa_bios_size = vbios[2] * 512; 804 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 805 (vesa_bios_int10 & 0xffff0000) && 806 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 807 vesa_bios = x86bios_alloc(&vesa_bios_offs, 808 vesa_bios_size, M_WAITOK); 809 bcopy(vbios, vesa_bios, vesa_bios_size); 810 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 811 (vesa_bios_int10 & 0xffff); 812 x86bios_set_intr(0x10, offs); 813 } 814 } 815 if (vesa_bios == NULL) 816 printf("VESA: failed to shadow video ROM\n"); 817 } 818 if (bootverbose) 819 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 820 (offs >> 16) & 0xffff, offs & 0xffff); 821 822 x86bios_init_regs(®s); 823 regs.R_AX = 0x4f00; 824 825 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 826 827 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 828 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 829 830 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 831 x86bios_intr(®s, 0x10); 832 833 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 834 goto fail; 835 836 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 837 bcopy(vmbuf, buf, sizeof(*buf)); 838 839 if (bootverbose) { 840 printf("VESA: information block\n"); 841 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 842 } 843 844 vers = buf->v_version = le16toh(buf->v_version); 845 buf->v_oemstr = le32toh(buf->v_oemstr); 846 buf->v_flags = le32toh(buf->v_flags); 847 buf->v_modetable = le32toh(buf->v_modetable); 848 buf->v_memsize = le16toh(buf->v_memsize); 849 buf->v_revision = le16toh(buf->v_revision); 850 buf->v_venderstr = le32toh(buf->v_venderstr); 851 buf->v_prodstr = le32toh(buf->v_prodstr); 852 buf->v_revstr = le32toh(buf->v_revstr); 853 854 if (vers < 0x0102) { 855 printf("VESA: VBE version %d.%d is not supported; " 856 "version 1.2 or later is required.\n", 857 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 858 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 859 goto fail; 860 } 861 862 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 863 if (vers >= 0x0200) { 864 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 865 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 866 VESA_STRCPY(vesa_revstr, buf->v_revstr); 867 } 868 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 869 sizeof(VESA_VIA_CLE266)) == 0; 870 871 if (buf->v_modetable == 0) 872 goto fail; 873 874 msize = (size_t)buf->v_memsize * 64 * 1024; 875 876 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 877 878 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 879 (vesa_vmodetab[i] != 0xffff); ++i) { 880 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 881 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 882 continue; 883 884 vmode.v_modeattr = le16toh(vmode.v_modeattr); 885 vmode.v_wgran = le16toh(vmode.v_wgran); 886 vmode.v_wsize = le16toh(vmode.v_wsize); 887 vmode.v_waseg = le16toh(vmode.v_waseg); 888 vmode.v_wbseg = le16toh(vmode.v_wbseg); 889 vmode.v_posfunc = le32toh(vmode.v_posfunc); 890 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 891 vmode.v_width = le16toh(vmode.v_width); 892 vmode.v_height = le16toh(vmode.v_height); 893 vmode.v_lfb = le32toh(vmode.v_lfb); 894 vmode.v_offscreen = le32toh(vmode.v_offscreen); 895 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 896 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 897 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 898 899 /* reject unsupported modes */ 900#if 0 901 if ((vmode.v_modeattr & 902 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 903 (V_MODESUPP | V_MODEOPTINFO)) 904 continue; 905#else 906 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 907#if VESA_DEBUG > 1 908 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 909 " attr = %x\n", 910 vmode.v_modeattr & V_MODEGRAPHICS ? 911 "graphics" : "text", 912 vmode.v_width, vmode.v_height, vmode.v_bpp, 913 vmode.v_modeattr); 914#endif 915 continue; 916 } 917#endif 918 919 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 920 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 921 bsize *= vmode.v_planes; 922 923 /* Does it have enough memory to support this mode? */ 924 if (msize < bsize) { 925#if VESA_DEBUG > 1 926 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 927 " attr = %x, not enough memory\n", 928 vmode.v_modeattr & V_MODEGRAPHICS ? 929 "graphics" : "text", 930 vmode.v_width, vmode.v_height, vmode.v_bpp, 931 vmode.v_modeattr); 932#endif 933 continue; 934 } 935 if (bsize > vesa_vmem_max) 936 vesa_vmem_max = bsize; 937 938 /* expand the array if necessary */ 939 if (modes >= vesa_vmode_max) { 940 vesa_vmode_max += MODE_TABLE_DELTA; 941 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 942 M_DEVBUF, M_WAITOK); 943#if VESA_DEBUG > 1 944 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 945 modes, vesa_vmode_max); 946#endif 947 if (modes > 0) { 948 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 949 free(vesa_vmode, M_DEVBUF); 950 } 951 vesa_vmode = p; 952 } 953 954#if VESA_DEBUG > 1 955 printf("Found VESA %s mode: %d x %d x %d bpp\n", 956 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 957 vmode.v_width, vmode.v_height, vmode.v_bpp); 958#endif 959 if (is_via_cle266) { 960 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 961 vmode.v_width &= 0xff; 962 vmode.v_waseg = 0xb8000 >> 4; 963 } 964 } 965 966 /* copy some fields */ 967 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 968 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 969 vesa_vmode[modes].vi_width = vmode.v_width; 970 vesa_vmode[modes].vi_height = vmode.v_height; 971 vesa_vmode[modes].vi_depth = vmode.v_bpp; 972 vesa_vmode[modes].vi_planes = vmode.v_planes; 973 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 974 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 975 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 976 /* XXX window B */ 977 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 978 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 979 if (vmode.v_modeattr & V_MODELFB) 980 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 981 vesa_vmode[modes].vi_buffer_size = bsize; 982 vesa_vmode[modes].vi_mem_model = 983 vesa_translate_mmodel(vmode.v_memmodel); 984 switch (vesa_vmode[modes].vi_mem_model) { 985 case V_INFO_MM_DIRECT: 986 if ((vmode.v_modeattr & V_MODELFB) != 0 && 987 vers >= 0x0300) { 988 vesa_vmode[modes].vi_pixel_fields[0] = 989 vmode.v_linredfieldpos; 990 vesa_vmode[modes].vi_pixel_fields[1] = 991 vmode.v_lingreenfieldpos; 992 vesa_vmode[modes].vi_pixel_fields[2] = 993 vmode.v_linbluefieldpos; 994 vesa_vmode[modes].vi_pixel_fields[3] = 995 vmode.v_linresfieldpos; 996 vesa_vmode[modes].vi_pixel_fsizes[0] = 997 vmode.v_linredmasksize; 998 vesa_vmode[modes].vi_pixel_fsizes[1] = 999 vmode.v_lingreenmasksize; 1000 vesa_vmode[modes].vi_pixel_fsizes[2] = 1001 vmode.v_linbluemasksize; 1002 vesa_vmode[modes].vi_pixel_fsizes[3] = 1003 vmode.v_linresmasksize; 1004 } else { 1005 vesa_vmode[modes].vi_pixel_fields[0] = 1006 vmode.v_redfieldpos; 1007 vesa_vmode[modes].vi_pixel_fields[1] = 1008 vmode.v_greenfieldpos; 1009 vesa_vmode[modes].vi_pixel_fields[2] = 1010 vmode.v_bluefieldpos; 1011 vesa_vmode[modes].vi_pixel_fields[3] = 1012 vmode.v_resfieldpos; 1013 vesa_vmode[modes].vi_pixel_fsizes[0] = 1014 vmode.v_redmasksize; 1015 vesa_vmode[modes].vi_pixel_fsizes[1] = 1016 vmode.v_greenmasksize; 1017 vesa_vmode[modes].vi_pixel_fsizes[2] = 1018 vmode.v_bluemasksize; 1019 vesa_vmode[modes].vi_pixel_fsizes[3] = 1020 vmode.v_resmasksize; 1021 } 1022 /* FALLTHROUGH */ 1023 case V_INFO_MM_PACKED: 1024 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1025 break; 1026 } 1027 vesa_vmode[modes].vi_flags = 1028 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1029 1030 ++modes; 1031 } 1032 if (vesa_vmode != NULL) 1033 vesa_vmode[modes].vi_mode = EOT; 1034 1035 if (bootverbose) 1036 printf("VESA: %d mode(s) found\n", modes); 1037 1038 if (modes == 0) 1039 goto fail; 1040 1041 x86bios_free(vmbuf, sizeof(*buf)); 1042 1043 /* Probe supported save/restore states. */ 1044 for (i = 0; i < 4; i++) 1045 if (vesa_bios_state_buf_size(1 << i) > 0) 1046 vesa_state |= 1 << i; 1047 if (vesa_state != 0) 1048 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1049 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1050 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1051 if (vesa_state_buf_size > 0) { 1052 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1053 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1054 } 1055 1056 return (0); 1057 1058fail: 1059 x86bios_free(vmbuf, sizeof(buf)); 1060 vesa_bios_uninit(); 1061 return (1); 1062} 1063 1064static void 1065vesa_bios_uninit(void) 1066{ 1067 1068 if (vesa_bios != NULL) { 1069 x86bios_set_intr(0x10, vesa_bios_int10); 1070 vesa_bios_offs = VESA_BIOS_OFFSET; 1071 x86bios_free(vesa_bios, vesa_bios_size); 1072 vesa_bios = NULL; 1073 } 1074 if (vesa_adp_info != NULL) { 1075 free(vesa_adp_info, M_DEVBUF); 1076 vesa_adp_info = NULL; 1077 } 1078 if (vesa_oemstr != NULL) { 1079 free(vesa_oemstr, M_DEVBUF); 1080 vesa_oemstr = NULL; 1081 } 1082 if (vesa_venderstr != NULL) { 1083 free(vesa_venderstr, M_DEVBUF); 1084 vesa_venderstr = NULL; 1085 } 1086 if (vesa_prodstr != NULL) { 1087 free(vesa_prodstr, M_DEVBUF); 1088 vesa_prodstr = NULL; 1089 } 1090 if (vesa_revstr != NULL) { 1091 free(vesa_revstr, M_DEVBUF); 1092 vesa_revstr = NULL; 1093 } 1094 if (vesa_vmode != NULL) { 1095 free(vesa_vmode, M_DEVBUF); 1096 vesa_vmode = NULL; 1097 } 1098 if (vesa_palette != NULL) { 1099 x86bios_free(vesa_palette, 1100 VESA_PALETTE_SIZE + vesa_state_buf_size); 1101 vesa_palette = NULL; 1102 } 1103} 1104 1105static void 1106vesa_clear_modes(video_info_t *info, int color) 1107{ 1108 while (info->vi_mode != EOT) { 1109 if ((info->vi_flags & V_INFO_COLOR) != color) 1110 info->vi_mode = NA; 1111 ++info; 1112 } 1113} 1114 1115/* entry points */ 1116 1117static int 1118vesa_configure(int flags) 1119{ 1120 video_adapter_t *adp; 1121 int adapters; 1122 int error; 1123 int i; 1124 1125 if (vesa_init_done) 1126 return (0); 1127 if (flags & VIO_PROBE_ONLY) 1128 return (0); 1129 1130 /* 1131 * If the VESA module has already been loaded, abort loading 1132 * the module this time. 1133 */ 1134 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1135 if (adp->va_flags & V_ADP_VESA) 1136 return (ENXIO); 1137 if (adp->va_type == KD_VGA) 1138 break; 1139 } 1140 1141 /* 1142 * The VGA adapter is not found. This is because either 1143 * 1) the VGA driver has not been initialized, or 2) the VGA card 1144 * is not present. If 1) is the case, we shall defer 1145 * initialization for now and try again later. 1146 */ 1147 if (adp == NULL) { 1148 vga_sub_configure = vesa_configure; 1149 return (ENODEV); 1150 } 1151 1152 /* count number of registered adapters */ 1153 for (++i; vid_get_adapter(i) != NULL; ++i) 1154 ; 1155 adapters = i; 1156 1157 /* call VESA BIOS */ 1158 vesa_adp = adp; 1159 if (vesa_bios_init()) { 1160 vesa_adp = NULL; 1161 return (ENXIO); 1162 } 1163 vesa_adp->va_flags |= V_ADP_VESA; 1164 1165 /* remove conflicting modes if we have more than one adapter */ 1166 if (adapters > 1) { 1167 vesa_clear_modes(vesa_vmode, 1168 (vesa_adp->va_flags & V_ADP_COLOR) ? 1169 V_INFO_COLOR : 0); 1170 } 1171 1172 if ((error = vesa_load_ioctl()) == 0) { 1173 prevvidsw = vidsw[vesa_adp->va_index]; 1174 vidsw[vesa_adp->va_index] = &vesavidsw; 1175 vesa_init_done = TRUE; 1176 } else { 1177 vesa_adp = NULL; 1178 return (error); 1179 } 1180 1181 return (0); 1182} 1183 1184#if 0 1185static int 1186vesa_nop(void) 1187{ 1188 1189 return (0); 1190} 1191#endif 1192 1193static int 1194vesa_error(void) 1195{ 1196 1197 return (1); 1198} 1199 1200static int 1201vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1202{ 1203 1204 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1205} 1206 1207static int 1208vesa_init(int unit, video_adapter_t *adp, int flags) 1209{ 1210 1211 return ((*prevvidsw->init)(unit, adp, flags)); 1212} 1213 1214static int 1215vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1216{ 1217 int i; 1218 1219 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1220 return (0); 1221 1222 if (adp != vesa_adp) 1223 return (1); 1224 1225 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1226 vesa_adp->va_flags & V_ADP_COLOR, mode); 1227 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1228 if (vesa_vmode[i].vi_mode == NA) 1229 continue; 1230 if (vesa_vmode[i].vi_mode == mode) { 1231 *info = vesa_vmode[i]; 1232 return (0); 1233 } 1234 } 1235 return (1); 1236} 1237 1238static int 1239vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1240{ 1241 int i; 1242 1243 if ((*prevvidsw->query_mode)(adp, info) == 0) 1244 return (0); 1245 if (adp != vesa_adp) 1246 return (ENODEV); 1247 1248 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1249 if ((info->vi_width != 0) 1250 && (info->vi_width != vesa_vmode[i].vi_width)) 1251 continue; 1252 if ((info->vi_height != 0) 1253 && (info->vi_height != vesa_vmode[i].vi_height)) 1254 continue; 1255 if ((info->vi_cwidth != 0) 1256 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1257 continue; 1258 if ((info->vi_cheight != 0) 1259 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1260 continue; 1261 if ((info->vi_depth != 0) 1262 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1263 continue; 1264 if ((info->vi_planes != 0) 1265 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1266 continue; 1267 /* pixel format, memory model */ 1268 if ((info->vi_flags != 0) 1269 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1270 continue; 1271 *info = vesa_vmode[i]; 1272 return (0); 1273 } 1274 return (ENODEV); 1275} 1276 1277static int 1278vesa_set_mode(video_adapter_t *adp, int mode) 1279{ 1280 video_info_t info; 1281 1282 if (adp != vesa_adp) 1283 return ((*prevvidsw->set_mode)(adp, mode)); 1284 1285 mode = vesa_map_gen_mode_num(adp->va_type, 1286 adp->va_flags & V_ADP_COLOR, mode); 1287#if VESA_DEBUG > 0 1288 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1289 adp->va_mode, adp->va_mode, mode, mode); 1290#endif 1291 /* 1292 * If the current mode is a VESA mode and the new mode is not, 1293 * restore the state of the adapter first by setting one of the 1294 * standard VGA mode, so that non-standard, extended SVGA registers 1295 * are set to the state compatible with the standard VGA modes. 1296 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1297 * the new mode correctly. 1298 */ 1299 if (VESA_MODE(adp->va_mode)) { 1300 if (!VESA_MODE(mode) && 1301 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1302 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1303 vesa_bios_set_dac(6); 1304 adp->va_flags &= ~V_ADP_DAC8; 1305 } 1306 int10_set_mode(adp->va_initial_bios_mode); 1307 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1308 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1309 /* 1310 * Once (*prevvidsw->get_info)() succeeded, 1311 * (*prevvidsw->set_mode)() below won't fail... 1312 */ 1313 } 1314 } 1315 1316 /* we may not need to handle this mode after all... */ 1317 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1318 return (0); 1319 1320 /* is the new mode supported? */ 1321 if (vesa_get_info(adp, mode, &info)) 1322 return (1); 1323 /* assert(VESA_MODE(mode)); */ 1324 1325#if VESA_DEBUG > 0 1326 printf("VESA: about to set a VESA mode...\n"); 1327#endif 1328 /* 1329 * The mode change should reset the palette format to 6 bits, so 1330 * we must reset V_ADP_DAC8. Some BIOSes do an incomplete reset 1331 * if we call them with an 8-bit palette, so reset directly. 1332 */ 1333 if (adp->va_flags & V_ADP_DAC8) { 1334 vesa_bios_set_dac(6); 1335 adp->va_flags &= ~V_ADP_DAC8; 1336 } 1337 1338 /* don't use the linear frame buffer for text modes. XXX */ 1339 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1340 info.vi_flags &= ~V_INFO_LINEAR; 1341 1342 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1343 mode |= 0x4000; 1344 if (vesa_bios_set_mode(mode | 0x8000)) 1345 return (1); 1346 1347 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1348 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1349 vesa_bios_set_dac(8) > 6) 1350 adp->va_flags |= V_ADP_DAC8; 1351 1352 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1353 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1354 1355#if VESA_DEBUG > 0 1356 printf("VESA: mode set!\n"); 1357#endif 1358 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1359 vesa_adp->va_flags &= ~V_ADP_COLOR; 1360 vesa_adp->va_flags |= 1361 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1362 vesa_adp->va_crtc_addr = 1363 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1364 1365 vesa_adp->va_flags &= ~V_ADP_CWIDTH9; 1366 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1367 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1368 vesa_adp->va_line_width /= info.vi_planes; 1369 1370#ifdef MODE_TABLE_BROKEN 1371 /* If VBE function returns bigger bytes per scan line, use it. */ 1372 { 1373 int bpsl = vesa_bios_get_line_length(); 1374 if (bpsl > vesa_adp->va_line_width) { 1375 vesa_adp->va_line_width = bpsl; 1376 info.vi_buffer_size = bpsl * info.vi_height; 1377 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1378 info.vi_buffer_size *= info.vi_planes; 1379 } 1380 } 1381#endif 1382 1383 if (info.vi_flags & V_INFO_LINEAR) { 1384#if VESA_DEBUG > 1 1385 printf("VESA: setting up LFB\n"); 1386#endif 1387 vesa_adp->va_buffer = 1388 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1389 vesa_vmem_max, PAT_WRITE_COMBINING); 1390 vesa_adp->va_window = vesa_adp->va_buffer; 1391 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1392 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1393 } else { 1394 vesa_adp->va_buffer = 0; 1395 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1396 vesa_adp->va_window_size = info.vi_window_size; 1397 vesa_adp->va_window_gran = info.vi_window_gran; 1398 } 1399 vesa_adp->va_buffer_size = info.vi_buffer_size; 1400 vesa_adp->va_window_orig = 0; 1401 vesa_adp->va_disp_start.x = 0; 1402 vesa_adp->va_disp_start.y = 0; 1403#if VESA_DEBUG > 0 1404 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1405 info.vi_width, vesa_adp->va_line_width); 1406#endif 1407 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1408 1409 /* move hardware cursor out of the way */ 1410 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1411 1412 return (0); 1413} 1414 1415static int 1416vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1417 u_char *data, int ch, int count) 1418{ 1419 1420 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1421 ch, count)); 1422} 1423 1424static int 1425vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1426 u_char *data, int ch, int count) 1427{ 1428 1429 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1430 ch, count)); 1431} 1432 1433static int 1434vesa_show_font(video_adapter_t *adp, int page) 1435{ 1436 1437 return ((*prevvidsw->show_font)(adp, page)); 1438} 1439 1440static int 1441vesa_save_palette(video_adapter_t *adp, u_char *palette) 1442{ 1443 int bits; 1444 1445 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1446 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1447 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1448 return (0); 1449 } 1450 1451 return ((*prevvidsw->save_palette)(adp, palette)); 1452} 1453 1454static int 1455vesa_load_palette(video_adapter_t *adp, u_char *palette) 1456{ 1457 int bits; 1458 1459 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1460 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1461 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1462 return (0); 1463 } 1464 1465 return ((*prevvidsw->load_palette)(adp, palette)); 1466} 1467 1468static int 1469vesa_set_border(video_adapter_t *adp, int color) 1470{ 1471 1472 return ((*prevvidsw->set_border)(adp, color)); 1473} 1474 1475static int 1476vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1477{ 1478 void *buf; 1479 size_t bsize; 1480 1481 if (adp != vesa_adp || (size == 0 && vesa_state_buf_size == 0)) 1482 return ((*prevvidsw->save_state)(adp, p, size)); 1483 1484 bsize = offsetof(adp_state_t, regs) + vesa_state_buf_size; 1485 if (size == 0) 1486 return (bsize); 1487 if (vesa_state_buf_size > 0 && size < bsize) 1488 return (EINVAL); 1489 1490 if (vesa_vmem_buf != NULL) { 1491 free(vesa_vmem_buf, M_DEVBUF); 1492 vesa_vmem_buf = NULL; 1493 } 1494 if (VESA_MODE(adp->va_mode)) { 1495 buf = (void *)adp->va_buffer; 1496 if (buf != NULL) { 1497 bsize = adp->va_buffer_size; 1498 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT); 1499 if (vesa_vmem_buf != NULL) 1500 bcopy(buf, vesa_vmem_buf, bsize); 1501 } 1502 } 1503 if (vesa_state_buf_size == 0) 1504 return ((*prevvidsw->save_state)(adp, p, size)); 1505 ((adp_state_t *)p)->sig = V_STATE_SIG; 1506 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1507} 1508 1509static int 1510vesa_load_state(video_adapter_t *adp, void *p) 1511{ 1512 void *buf; 1513 size_t bsize; 1514 int error, mode; 1515 1516 if (adp != vesa_adp) 1517 return ((*prevvidsw->load_state)(adp, p)); 1518 1519 /* Try BIOS POST to restore a sane state. */ 1520 (void)vesa_bios_post(); 1521 bsize = adp->va_buffer_size; 1522 mode = adp->va_mode; 1523 error = vesa_set_mode(adp, adp->va_initial_mode); 1524 if (mode != adp->va_initial_mode) 1525 error = vesa_set_mode(adp, mode); 1526 1527 if (vesa_vmem_buf != NULL) { 1528 if (error == 0 && VESA_MODE(mode)) { 1529 buf = (void *)adp->va_buffer; 1530 if (buf != NULL) 1531 bcopy(vesa_vmem_buf, buf, bsize); 1532 } 1533 free(vesa_vmem_buf, M_DEVBUF); 1534 vesa_vmem_buf = NULL; 1535 } 1536 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1537 return ((*prevvidsw->load_state)(adp, p)); 1538 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1539} 1540 1541#if 0 1542static int 1543vesa_get_origin(video_adapter_t *adp, off_t *offset) 1544{ 1545 x86regs_t regs; 1546 1547 x86bios_init_regs(®s); 1548 regs.R_AX = 0x4f05; 1549 regs.R_BL = 0x10; 1550 1551 x86bios_intr(®s, 0x10); 1552 1553 if (regs.R_AX != 0x004f) 1554 return (1); 1555 *offset = regs.DX * adp->va_window_gran; 1556 1557 return (0); 1558} 1559#endif 1560 1561static int 1562vesa_set_origin(video_adapter_t *adp, off_t offset) 1563{ 1564 x86regs_t regs; 1565 1566 /* 1567 * This function should return as quickly as possible to 1568 * maintain good performance of the system. For this reason, 1569 * error checking is kept minimal and let the VESA BIOS to 1570 * detect error. 1571 */ 1572 if (adp != vesa_adp) 1573 return ((*prevvidsw->set_win_org)(adp, offset)); 1574 1575 /* if this is a linear frame buffer, do nothing */ 1576 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1577 return (0); 1578 /* XXX */ 1579 if (adp->va_window_gran == 0) 1580 return (1); 1581 1582 x86bios_init_regs(®s); 1583 regs.R_AX = 0x4f05; 1584 regs.R_DX = offset / adp->va_window_gran; 1585 1586 x86bios_intr(®s, 0x10); 1587 1588 if (regs.R_AX != 0x004f) 1589 return (1); 1590 1591 x86bios_init_regs(®s); 1592 regs.R_AX = 0x4f05; 1593 regs.R_BL = 1; 1594 regs.R_DX = offset / adp->va_window_gran; 1595 x86bios_intr(®s, 0x10); 1596 1597 adp->va_window_orig = rounddown(offset, adp->va_window_gran); 1598 return (0); /* XXX */ 1599} 1600 1601static int 1602vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1603{ 1604 1605 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1606} 1607 1608static int 1609vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1610{ 1611 1612 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1613} 1614 1615static int 1616vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1617 int celsize, int blink) 1618{ 1619 1620 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1621 blink)); 1622} 1623 1624static int 1625vesa_blank_display(video_adapter_t *adp, int mode) 1626{ 1627 1628 /* XXX: use VESA DPMS */ 1629 return ((*prevvidsw->blank_display)(adp, mode)); 1630} 1631 1632static int 1633vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1634 int prot, vm_memattr_t *memattr) 1635{ 1636 1637#if VESA_DEBUG > 0 1638 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1639 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1640#endif 1641 1642 if ((adp == vesa_adp) && 1643 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1644 /* va_window_size == va_buffer_size/vi_planes */ 1645 /* XXX: is this correct? */ 1646 if (offset > adp->va_window_size - PAGE_SIZE) 1647 return (-1); 1648 *paddr = adp->va_info.vi_buffer + offset; 1649#ifdef VM_MEMATTR_WRITE_COMBINING 1650 *memattr = VM_MEMATTR_WRITE_COMBINING; 1651#endif 1652 return (0); 1653 } 1654 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1655} 1656 1657static int 1658vesa_clear(video_adapter_t *adp) 1659{ 1660 1661 return ((*prevvidsw->clear)(adp)); 1662} 1663 1664static int 1665vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1666{ 1667 1668 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1669} 1670 1671static int 1672vesa_bitblt(video_adapter_t *adp,...) 1673{ 1674 1675 /* FIXME */ 1676 return (1); 1677} 1678 1679static int 1680get_palette(video_adapter_t *adp, int base, int count, 1681 u_char *red, u_char *green, u_char *blue, u_char *trans) 1682{ 1683 u_char *r; 1684 u_char *g; 1685 u_char *b; 1686 int bits; 1687 int error; 1688 1689 if (base < 0 || base >= 256 || count < 0 || count > 256) 1690 return (1); 1691 if ((base + count) > 256) 1692 return (1); 1693 if (!VESA_MODE(adp->va_mode)) 1694 return (1); 1695 1696 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1697 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1698 g = r + count; 1699 b = g + count; 1700 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1701 if (error == 0) { 1702 copyout(r, red, count); 1703 copyout(g, green, count); 1704 copyout(b, blue, count); 1705 if (trans != NULL) { 1706 bzero(r, count); 1707 copyout(r, trans, count); 1708 } 1709 } 1710 free(r, M_DEVBUF); 1711 1712 return (error); 1713} 1714 1715static int 1716set_palette(video_adapter_t *adp, int base, int count, 1717 u_char *red, u_char *green, u_char *blue, u_char *trans) 1718{ 1719 u_char *r; 1720 u_char *g; 1721 u_char *b; 1722 int bits; 1723 int error; 1724 1725 if (base < 0 || base >= 256 || count < 0 || count > 256) 1726 return (1); 1727 if ((base + count) > 256) 1728 return (1); 1729 if (!VESA_MODE(adp->va_mode)) 1730 return (1); 1731 1732 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1733 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1734 g = r + count; 1735 b = g + count; 1736 copyin(red, r, count); 1737 copyin(green, g, count); 1738 copyin(blue, b, count); 1739 1740 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1741 free(r, M_DEVBUF); 1742 1743 return (error); 1744} 1745 1746static int 1747vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1748{ 1749 int bytes; 1750 1751 if (adp != vesa_adp) 1752 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1753 1754 switch (cmd) { 1755 case FBIO_SETWINORG: /* set frame buffer window origin */ 1756 if (!VESA_MODE(adp->va_mode)) 1757 return (*prevvidsw->ioctl)(adp, cmd, arg); 1758 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1759 1760 case FBIO_SETDISPSTART: /* set display start address */ 1761 if (!VESA_MODE(adp->va_mode)) 1762 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1763 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1764 ((video_display_start_t *)arg)->y)) 1765 return (ENODEV); 1766 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1767 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1768 return (0); 1769 1770 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1771 if (!VESA_MODE(adp->va_mode)) 1772 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1773 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1774 return (ENODEV); 1775 adp->va_line_width = bytes; 1776#if VESA_DEBUG > 1 1777 printf("new line width:%d\n", adp->va_line_width); 1778#endif 1779 return (0); 1780 1781 case FBIO_GETPALETTE: /* get color palette */ 1782 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1783 ((video_color_palette_t *)arg)->count, 1784 ((video_color_palette_t *)arg)->red, 1785 ((video_color_palette_t *)arg)->green, 1786 ((video_color_palette_t *)arg)->blue, 1787 ((video_color_palette_t *)arg)->transparent)) 1788 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1789 return (0); 1790 1791 1792 case FBIO_SETPALETTE: /* set color palette */ 1793 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1794 ((video_color_palette_t *)arg)->count, 1795 ((video_color_palette_t *)arg)->red, 1796 ((video_color_palette_t *)arg)->green, 1797 ((video_color_palette_t *)arg)->blue, 1798 ((video_color_palette_t *)arg)->transparent)) 1799 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1800 return (0); 1801 1802 case FBIOGETCMAP: /* get color palette */ 1803 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1804 ((struct fbcmap *)arg)->count, 1805 ((struct fbcmap *)arg)->red, 1806 ((struct fbcmap *)arg)->green, 1807 ((struct fbcmap *)arg)->blue, NULL)) 1808 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1809 return (0); 1810 1811 case FBIOPUTCMAP: /* set color palette */ 1812 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1813 ((struct fbcmap *)arg)->count, 1814 ((struct fbcmap *)arg)->red, 1815 ((struct fbcmap *)arg)->green, 1816 ((struct fbcmap *)arg)->blue, NULL)) 1817 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1818 return (0); 1819 1820 default: 1821 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1822 } 1823} 1824 1825static int 1826vesa_diag(video_adapter_t *adp, int level) 1827{ 1828 int error; 1829 1830 /* call the previous handler first */ 1831 error = (*prevvidsw->diag)(adp, level); 1832 if (error) 1833 return (error); 1834 1835 if (adp != vesa_adp) 1836 return (1); 1837 1838 if (level <= 0) 1839 return (0); 1840 1841 return (0); 1842} 1843 1844static int 1845vesa_bios_info(int level) 1846{ 1847#if VESA_DEBUG > 1 1848 struct vesa_mode vmode; 1849 int i; 1850#endif 1851 uint16_t vers; 1852 1853 vers = vesa_adp_info->v_version; 1854 1855 if (bootverbose) { 1856 /* general adapter information */ 1857 printf( 1858 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1859 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1860 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1861 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1862 vesa_vmodetab, vesa_adp_info->v_modetable); 1863 1864 /* OEM string */ 1865 if (vesa_oemstr != NULL) 1866 printf("VESA: %s\n", vesa_oemstr); 1867 } 1868 1869 if (level <= 0) 1870 return (0); 1871 1872 if (vers >= 0x0200 && bootverbose) { 1873 /* vender name, product name, product revision */ 1874 printf("VESA: %s %s %s\n", 1875 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1876 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1877 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1878 } 1879 1880#if VESA_DEBUG > 1 1881 /* mode information */ 1882 for (i = 0; 1883 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1884 && (vesa_vmodetab[i] != 0xffff); ++i) { 1885 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1886 continue; 1887 1888 /* print something for diagnostic purpose */ 1889 printf("VESA: mode:0x%03x, flags:0x%04x", 1890 vesa_vmodetab[i], vmode.v_modeattr); 1891 if (vmode.v_modeattr & V_MODEOPTINFO) { 1892 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1893 printf(", G %dx%dx%d %d, ", 1894 vmode.v_width, vmode.v_height, 1895 vmode.v_bpp, vmode.v_planes); 1896 } else { 1897 printf(", T %dx%d, ", 1898 vmode.v_width, vmode.v_height); 1899 } 1900 printf("font:%dx%d, ", 1901 vmode.v_cwidth, vmode.v_cheight); 1902 printf("pages:%d, mem:%d", 1903 vmode.v_ipages + 1, vmode.v_memmodel); 1904 } 1905 if (vmode.v_modeattr & V_MODELFB) { 1906 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1907 vmode.v_lfb, vmode.v_offscreen, 1908 vmode.v_offscreensize*1024); 1909 } 1910 printf("\n"); 1911 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1912 vmode.v_waseg, vmode.v_waattr, 1913 vmode.v_wbseg, vmode.v_wbattr); 1914 printf("size:%dk, gran:%dk\n", 1915 vmode.v_wsize, vmode.v_wgran); 1916 } 1917#endif /* VESA_DEBUG > 1 */ 1918 1919 return (0); 1920} 1921 1922/* module loading */ 1923 1924static int 1925vesa_load(void) 1926{ 1927 int error; 1928 1929 if (vesa_init_done) 1930 return (0); 1931 1932 /* locate a VGA adapter */ 1933 vesa_adp = NULL; 1934 error = vesa_configure(0); 1935 1936 if (error == 0) 1937 vesa_bios_info(bootverbose); 1938 1939 /* Don't return ENODEV, the upper layers will whine. */ 1940 if (error == ENODEV) { 1941 error = 0; 1942 vesa_adp = NULL; 1943 } 1944 1945 return (error); 1946} 1947 1948static int 1949vesa_unload(void) 1950{ 1951 int error; 1952 1953 /* The driver never initialized, so make it easy to unload. */ 1954 if (vesa_adp == NULL) 1955 return (0); 1956 1957 /* if the adapter is currently in a VESA mode, don't unload */ 1958 if (VESA_MODE(vesa_adp->va_mode)) 1959 return (EBUSY); 1960 /* 1961 * FIXME: if there is at least one vty which is in a VESA mode, 1962 * we shouldn't be unloading! XXX 1963 */ 1964 1965 if ((error = vesa_unload_ioctl()) == 0) { 1966 if (vesa_adp != NULL) { 1967 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1968 vesa_bios_set_dac(6); 1969 vesa_adp->va_flags &= ~V_ADP_DAC8; 1970 } 1971 vesa_adp->va_flags &= ~V_ADP_VESA; 1972 vidsw[vesa_adp->va_index] = prevvidsw; 1973 } 1974 } 1975 1976 vesa_bios_uninit(); 1977 1978 return (error); 1979} 1980 1981static int 1982vesa_mod_event(module_t mod, int type, void *data) 1983{ 1984 1985 switch (type) { 1986 case MOD_LOAD: 1987 return (vesa_load()); 1988 case MOD_UNLOAD: 1989 return (vesa_unload()); 1990 } 1991 return (EOPNOTSUPP); 1992} 1993 1994static moduledata_t vesa_mod = { 1995 "vesa", 1996 vesa_mod_event, 1997 NULL, 1998}; 1999 2000DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2001MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 2002 2003#endif /* VGA_NO_MODE_CHANGE */ 2004