1/*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * Copyright (c) 2009-2013 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: stable/11/sys/dev/fb/vesa.c 317500 2017-04-27 12:12:33Z kib $"); 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; 82MTX_SYSINIT(vesa_lock, &vesa_lock, "VESA lock", MTX_DEF); 83 84static int vesa_state; 85static void *vesa_state_buf; 86static uint32_t vesa_state_buf_offs; 87static size_t vesa_state_buf_size; 88 89static u_char *vesa_palette; 90static uint32_t vesa_palette_offs; 91 92static void *vesa_vmem_buf; 93static size_t vesa_vmem_max; 94 95static void *vesa_bios; 96static uint32_t vesa_bios_offs; 97static uint32_t vesa_bios_int10; 98static size_t vesa_bios_size; 99 100/* VESA video adapter */ 101static video_adapter_t *vesa_adp; 102 103static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging"); 104static int vesa_shadow_rom; 105SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 106 0, "Enable video BIOS shadow"); 107 108/* VESA functions */ 109#if 0 110static int vesa_nop(void); 111#endif 112static int vesa_error(void); 113static vi_probe_t vesa_probe; 114static vi_init_t vesa_init; 115static vi_get_info_t vesa_get_info; 116static vi_query_mode_t vesa_query_mode; 117static vi_set_mode_t vesa_set_mode; 118static vi_save_font_t vesa_save_font; 119static vi_load_font_t vesa_load_font; 120static vi_show_font_t vesa_show_font; 121static vi_save_palette_t vesa_save_palette; 122static vi_load_palette_t vesa_load_palette; 123static vi_set_border_t vesa_set_border; 124static vi_save_state_t vesa_save_state; 125static vi_load_state_t vesa_load_state; 126static vi_set_win_org_t vesa_set_origin; 127static vi_read_hw_cursor_t vesa_read_hw_cursor; 128static vi_set_hw_cursor_t vesa_set_hw_cursor; 129static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 130static vi_blank_display_t vesa_blank_display; 131static vi_mmap_t vesa_mmap; 132static vi_ioctl_t vesa_ioctl; 133static vi_clear_t vesa_clear; 134static vi_fill_rect_t vesa_fill_rect; 135static vi_bitblt_t vesa_bitblt; 136static vi_diag_t vesa_diag; 137static int vesa_bios_info(int level); 138 139static video_switch_t vesavidsw = { 140 vesa_probe, 141 vesa_init, 142 vesa_get_info, 143 vesa_query_mode, 144 vesa_set_mode, 145 vesa_save_font, 146 vesa_load_font, 147 vesa_show_font, 148 vesa_save_palette, 149 vesa_load_palette, 150 vesa_set_border, 151 vesa_save_state, 152 vesa_load_state, 153 vesa_set_origin, 154 vesa_read_hw_cursor, 155 vesa_set_hw_cursor, 156 vesa_set_hw_cursor_shape, 157 vesa_blank_display, 158 vesa_mmap, 159 vesa_ioctl, 160 vesa_clear, 161 vesa_fill_rect, 162 vesa_bitblt, 163 vesa_error, 164 vesa_error, 165 vesa_diag, 166}; 167 168static video_switch_t *prevvidsw; 169 170/* VESA BIOS video modes */ 171#define VESA_MAXMODES 64 172#define EOT (-1) 173#define NA (-2) 174 175#define MODE_TABLE_DELTA 8 176 177static int vesa_vmode_max; 178static video_info_t *vesa_vmode; 179 180static int vesa_init_done; 181static struct vesa_info *vesa_adp_info; 182static u_int16_t *vesa_vmodetab; 183static char *vesa_oemstr; 184static char *vesa_venderstr; 185static char *vesa_prodstr; 186static char *vesa_revstr; 187 188/* local macros and functions */ 189#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 190 191static int int10_set_mode(int mode); 192static int vesa_bios_post(void); 193static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 194static int vesa_bios_set_mode(int mode); 195#if 0 196static int vesa_bios_get_dac(void); 197#endif 198static int vesa_bios_set_dac(int bits); 199static int vesa_bios_save_palette(int start, int colors, u_char *palette, 200 int bits); 201static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 202 u_char *b, int bits); 203static int vesa_bios_load_palette(int start, int colors, u_char *palette, 204 int bits); 205static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 206 u_char *b, int bits); 207#define STATE_SIZE 0 208#define STATE_SAVE 1 209#define STATE_LOAD 2 210static size_t vesa_bios_state_buf_size(int); 211static int vesa_bios_save_restore(int code, void *p); 212#ifdef MODE_TABLE_BROKEN 213static int vesa_bios_get_line_length(void); 214#endif 215static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 216#if 0 217static int vesa_bios_get_start(int *x, int *y); 218#endif 219static int vesa_bios_set_start(int x, int y); 220static int vesa_map_gen_mode_num(int type, int color, int mode); 221static int vesa_translate_flags(u_int16_t vflags); 222static int vesa_translate_mmodel(u_int8_t vmodel); 223static int vesa_get_bpscanline(struct vesa_mode *vmode); 224static int vesa_bios_init(void); 225static void vesa_bios_uninit(void); 226static void vesa_clear_modes(video_info_t *info, int color); 227 228#if 0 229static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 230#endif 231 232/* INT 10 BIOS calls */ 233static int 234int10_set_mode(int mode) 235{ 236 x86regs_t regs; 237 238 x86bios_init_regs(®s); 239 regs.R_AL = mode; 240 241 x86bios_intr(®s, 0x10); 242 243 return (0); 244} 245 246static int 247vesa_bios_post(void) 248{ 249 x86regs_t regs; 250 devclass_t dc; 251 device_t *devs; 252 device_t dev; 253 int count, i, is_pci; 254 255 if (x86bios_get_orm(vesa_bios_offs) == NULL) 256 return (1); 257 258 dev = NULL; 259 is_pci = 0; 260 261 /* Find the matching PCI video controller. */ 262 dc = devclass_find("vgapci"); 263 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 264 for (i = 0; i < count; i++) 265 if (device_get_flags(devs[i]) != 0 && 266 x86bios_match_device(vesa_bios_offs, devs[i])) { 267 dev = devs[i]; 268 is_pci = 1; 269 break; 270 } 271 free(devs, M_TEMP); 272 } 273 274 /* Try VGA if a PCI device is not found. */ 275 if (dev == NULL) { 276 dc = devclass_find(VGA_DRIVER_NAME); 277 if (dc != NULL) 278 dev = devclass_get_device(dc, 0); 279 } 280 281 if (bootverbose) 282 printf("%s: calling BIOS POST\n", 283 dev == NULL ? "VESA" : device_get_nameunit(dev)); 284 285 x86bios_init_regs(®s); 286 if (is_pci) { 287 regs.R_AH = pci_get_bus(dev); 288 regs.R_AL = (pci_get_slot(dev) << 3) | 289 (pci_get_function(dev) & 0x07); 290 } 291 regs.R_DL = 0x80; 292 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 293 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 294 295 if (x86bios_get_intr(0x10) == 0) 296 return (1); 297 298 return (0); 299} 300 301/* VESA BIOS calls */ 302static int 303vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 304{ 305 x86regs_t regs; 306 uint32_t offs; 307 void *buf; 308 309 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 310 if (buf == NULL) 311 return (1); 312 313 x86bios_init_regs(®s); 314 regs.R_AX = 0x4f01; 315 regs.R_CX = mode; 316 317 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 318 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 319 320 x86bios_intr(®s, 0x10); 321 322 if (regs.R_AX != 0x004f) { 323 x86bios_free(buf, sizeof(*vmode)); 324 return (1); 325 } 326 327 bcopy(buf, vmode, sizeof(*vmode)); 328 x86bios_free(buf, sizeof(*vmode)); 329 330 return (0); 331} 332 333static int 334vesa_bios_set_mode(int mode) 335{ 336 x86regs_t regs; 337 338 x86bios_init_regs(®s); 339 regs.R_AX = 0x4f02; 340 regs.R_BX = mode; 341 342 x86bios_intr(®s, 0x10); 343 344 return (regs.R_AX != 0x004f); 345} 346 347#if 0 348static int 349vesa_bios_get_dac(void) 350{ 351 x86regs_t regs; 352 353 x86bios_init_regs(®s); 354 regs.R_AX = 0x4f08; 355 regs.R_BL = 1; 356 357 x86bios_intr(®s, 0x10); 358 359 if (regs.R_AX != 0x004f) 360 return (6); 361 362 return (regs.R_BH); 363} 364#endif 365 366static int 367vesa_bios_set_dac(int bits) 368{ 369 x86regs_t regs; 370 371 x86bios_init_regs(®s); 372 regs.R_AX = 0x4f08; 373 /* regs.R_BL = 0; */ 374 regs.R_BH = bits; 375 376 x86bios_intr(®s, 0x10); 377 378 if (regs.R_AX != 0x004f) 379 return (6); 380 381 return (regs.R_BH); 382} 383 384static int 385vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 386{ 387 x86regs_t regs; 388 int i; 389 390 x86bios_init_regs(®s); 391 regs.R_AX = 0x4f09; 392 regs.R_BL = 1; 393 regs.R_CX = colors; 394 regs.R_DX = start; 395 396 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 397 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 398 399 bits = 8 - bits; 400 mtx_lock(&vesa_lock); 401 x86bios_intr(®s, 0x10); 402 if (regs.R_AX != 0x004f) { 403 mtx_unlock(&vesa_lock); 404 return (1); 405 } 406 for (i = 0; i < colors; ++i) { 407 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 408 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 409 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 410 } 411 mtx_unlock(&vesa_lock); 412 413 return (0); 414} 415 416static int 417vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 418 int bits) 419{ 420 x86regs_t regs; 421 int i; 422 423 x86bios_init_regs(®s); 424 regs.R_AX = 0x4f09; 425 regs.R_BL = 1; 426 regs.R_CX = colors; 427 regs.R_DX = start; 428 429 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 430 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 431 432 bits = 8 - bits; 433 mtx_lock(&vesa_lock); 434 x86bios_intr(®s, 0x10); 435 if (regs.R_AX != 0x004f) { 436 mtx_unlock(&vesa_lock); 437 return (1); 438 } 439 for (i = 0; i < colors; ++i) { 440 r[i] = vesa_palette[i * 4 + 2] << bits; 441 g[i] = vesa_palette[i * 4 + 1] << bits; 442 b[i] = vesa_palette[i * 4] << bits; 443 } 444 mtx_unlock(&vesa_lock); 445 446 return (0); 447} 448 449static int 450vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 451{ 452 x86regs_t regs; 453 int i; 454 455 x86bios_init_regs(®s); 456 regs.R_AX = 0x4f09; 457 /* regs.R_BL = 0; */ 458 regs.R_CX = colors; 459 regs.R_DX = start; 460 461 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 462 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 463 464 bits = 8 - bits; 465 mtx_lock(&vesa_lock); 466 for (i = 0; i < colors; ++i) { 467 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 468 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 469 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 470 vesa_palette[i * 4 + 3] = 0; 471 } 472 x86bios_intr(®s, 0x10); 473 mtx_unlock(&vesa_lock); 474 475 return (regs.R_AX != 0x004f); 476} 477 478static int 479vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 480 int bits) 481{ 482 x86regs_t regs; 483 int i; 484 485 x86bios_init_regs(®s); 486 regs.R_AX = 0x4f09; 487 /* regs.R_BL = 0; */ 488 regs.R_CX = colors; 489 regs.R_DX = start; 490 491 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 492 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 493 494 bits = 8 - bits; 495 mtx_lock(&vesa_lock); 496 for (i = 0; i < colors; ++i) { 497 vesa_palette[i * 4] = b[i] >> bits; 498 vesa_palette[i * 4 + 1] = g[i] >> bits; 499 vesa_palette[i * 4 + 2] = r[i] >> bits; 500 vesa_palette[i * 4 + 3] = 0; 501 } 502 x86bios_intr(®s, 0x10); 503 mtx_unlock(&vesa_lock); 504 505 return (regs.R_AX != 0x004f); 506} 507 508static size_t 509vesa_bios_state_buf_size(int state) 510{ 511 x86regs_t regs; 512 513 x86bios_init_regs(®s); 514 regs.R_AX = 0x4f04; 515 /* regs.R_DL = STATE_SIZE; */ 516 regs.R_CX = state; 517 518 x86bios_intr(®s, 0x10); 519 520 if (regs.R_AX != 0x004f) 521 return (0); 522 523 return (regs.R_BX * 64); 524} 525 526static int 527vesa_bios_save_restore(int code, void *p) 528{ 529 x86regs_t regs; 530 531 if (code != STATE_SAVE && code != STATE_LOAD) 532 return (1); 533 534 x86bios_init_regs(®s); 535 regs.R_AX = 0x4f04; 536 regs.R_DL = code; 537 regs.R_CX = vesa_state; 538 539 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 540 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 541 542 mtx_lock(&vesa_lock); 543 switch (code) { 544 case STATE_SAVE: 545 x86bios_intr(®s, 0x10); 546 if (regs.R_AX == 0x004f) 547 bcopy(vesa_state_buf, p, vesa_state_buf_size); 548 break; 549 case STATE_LOAD: 550 bcopy(p, vesa_state_buf, vesa_state_buf_size); 551 x86bios_intr(®s, 0x10); 552 break; 553 } 554 mtx_unlock(&vesa_lock); 555 556 return (regs.R_AX != 0x004f); 557} 558 559#ifdef MODE_TABLE_BROKEN 560static int 561vesa_bios_get_line_length(void) 562{ 563 x86regs_t regs; 564 565 x86bios_init_regs(®s); 566 regs.R_AX = 0x4f06; 567 regs.R_BL = 1; 568 569 x86bios_intr(®s, 0x10); 570 571 if (regs.R_AX != 0x004f) 572 return (-1); 573 574 return (regs.R_BX); 575} 576#endif 577 578static int 579vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 580{ 581 x86regs_t regs; 582 583 x86bios_init_regs(®s); 584 regs.R_AX = 0x4f06; 585 /* regs.R_BL = 0; */ 586 regs.R_CX = pixel; 587 588 x86bios_intr(®s, 0x10); 589 590#if VESA_DEBUG > 1 591 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 592#endif 593 if (regs.R_AX != 0x004f) 594 return (-1); 595 596 if (bytes != NULL) 597 *bytes = regs.R_BX; 598 if (lines != NULL) 599 *lines = regs.R_DX; 600 601 return (0); 602} 603 604#if 0 605static int 606vesa_bios_get_start(int *x, int *y) 607{ 608 x86regs_t regs; 609 610 x86bios_init_regs(®s); 611 regs.R_AX = 0x4f07; 612 regs.R_BL = 1; 613 614 x86bios_intr(®s, 0x10); 615 616 if (regs.R_AX != 0x004f) 617 return (-1); 618 619 *x = regs.R_CX; 620 *y = regs.R_DX; 621 622 return (0); 623} 624#endif 625 626static int 627vesa_bios_set_start(int x, int y) 628{ 629 x86regs_t regs; 630 631 x86bios_init_regs(®s); 632 regs.R_AX = 0x4f07; 633 regs.R_BL = 0x80; 634 regs.R_CX = x; 635 regs.R_DX = y; 636 637 x86bios_intr(®s, 0x10); 638 639 return (regs.R_AX != 0x004f); 640} 641 642/* map a generic video mode to a known mode */ 643static int 644vesa_map_gen_mode_num(int type, int color, int mode) 645{ 646 static struct { 647 int from; 648 int to; 649 } mode_map[] = { 650 { M_TEXT_132x25, M_VESA_C132x25 }, 651 { M_TEXT_132x43, M_VESA_C132x43 }, 652 { M_TEXT_132x50, M_VESA_C132x50 }, 653 { M_TEXT_132x60, M_VESA_C132x60 }, 654 }; 655 int i; 656 657 for (i = 0; i < nitems(mode_map); ++i) { 658 if (mode_map[i].from == mode) 659 return (mode_map[i].to); 660 } 661 return (mode); 662} 663 664static int 665vesa_translate_flags(u_int16_t vflags) 666{ 667 static struct { 668 u_int16_t mask; 669 int set; 670 int reset; 671 } ftable[] = { 672 { V_MODECOLOR, V_INFO_COLOR, 0 }, 673 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 674 { V_MODELFB, V_INFO_LINEAR, 0 }, 675 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 676 }; 677 int flags; 678 int i; 679 680 for (flags = 0, i = 0; i < nitems(ftable); ++i) { 681 flags |= (vflags & ftable[i].mask) ? 682 ftable[i].set : ftable[i].reset; 683 } 684 return (flags); 685} 686 687static int 688vesa_translate_mmodel(u_int8_t vmodel) 689{ 690 static struct { 691 u_int8_t vmodel; 692 int mmodel; 693 } mtable[] = { 694 { V_MMTEXT, V_INFO_MM_TEXT }, 695 { V_MMCGA, V_INFO_MM_CGA }, 696 { V_MMHGC, V_INFO_MM_HGC }, 697 { V_MMEGA, V_INFO_MM_PLANAR }, 698 { V_MMPACKED, V_INFO_MM_PACKED }, 699 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 700 }; 701 int i; 702 703 for (i = 0; mtable[i].mmodel >= 0; ++i) { 704 if (mtable[i].vmodel == vmodel) 705 return (mtable[i].mmodel); 706 } 707 return (V_INFO_MM_OTHER); 708} 709 710static int 711vesa_get_bpscanline(struct vesa_mode *vmode) 712{ 713 int bpsl; 714 715 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 716 /* Find the minimum length. */ 717 switch (vmode->v_bpp / vmode->v_planes) { 718 case 1: 719 bpsl = vmode->v_width / 8; 720 break; 721 case 2: 722 bpsl = vmode->v_width / 4; 723 break; 724 case 4: 725 bpsl = vmode->v_width / 2; 726 break; 727 default: 728 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 729 bpsl /= vmode->v_planes; 730 break; 731 } 732 733 /* Use VBE 3.0 information if it looks sane. */ 734 if ((vmode->v_modeattr & V_MODELFB) != 0 && 735 vesa_adp_info->v_version >= 0x0300 && 736 vmode->v_linbpscanline > bpsl) 737 return (vmode->v_linbpscanline); 738 739 /* Return the minimum if the mode table looks absurd. */ 740 if (vmode->v_bpscanline < bpsl) 741 return (bpsl); 742 } 743 744 return (vmode->v_bpscanline); 745} 746 747#define VESA_MAXSTR 256 748 749#define VESA_STRCPY(dst, src) do { \ 750 char *str; \ 751 int i; \ 752 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 753 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 754 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 755 dst[i] = str[i]; \ 756 dst[i] = '\0'; \ 757} while (0) 758 759static int 760vesa_bios_init(void) 761{ 762 struct vesa_mode vmode; 763 struct vesa_info *buf; 764 video_info_t *p; 765 x86regs_t regs; 766 size_t bsize; 767 size_t msize; 768 void *vmbuf; 769 uint8_t *vbios; 770 uint32_t offs; 771 uint16_t vers; 772 int is_via_cle266; 773 int modes; 774 int i; 775 776 if (vesa_init_done) 777 return (0); 778 779 vesa_bios_offs = VESA_BIOS_OFFSET; 780 781 /* 782 * If the VBE real mode interrupt vector is not found, try BIOS POST. 783 */ 784 vesa_bios_int10 = x86bios_get_intr(0x10); 785 if (vesa_bios_int10 == 0) { 786 if (vesa_bios_post() != 0) 787 return (1); 788 vesa_bios_int10 = x86bios_get_intr(0x10); 789 if (vesa_bios_int10 == 0) 790 return (1); 791 } 792 793 /* 794 * Shadow video ROM. 795 */ 796 offs = vesa_bios_int10; 797 if (vesa_shadow_rom) { 798 vbios = x86bios_get_orm(vesa_bios_offs); 799 if (vbios != NULL) { 800 vesa_bios_size = vbios[2] * 512; 801 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 802 (vesa_bios_int10 & 0xffff0000) && 803 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 804 vesa_bios = x86bios_alloc(&vesa_bios_offs, 805 vesa_bios_size, M_WAITOK); 806 bcopy(vbios, vesa_bios, vesa_bios_size); 807 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 808 (vesa_bios_int10 & 0xffff); 809 x86bios_set_intr(0x10, offs); 810 } 811 } 812 if (vesa_bios == NULL) 813 printf("VESA: failed to shadow video ROM\n"); 814 } 815 if (bootverbose) 816 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 817 (offs >> 16) & 0xffff, offs & 0xffff); 818 819 x86bios_init_regs(®s); 820 regs.R_AX = 0x4f00; 821 822 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 823 824 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 825 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 826 827 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 828 x86bios_intr(®s, 0x10); 829 830 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 831 goto fail; 832 833 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 834 bcopy(vmbuf, buf, sizeof(*buf)); 835 836 if (bootverbose) { 837 printf("VESA: information block\n"); 838 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 839 } 840 841 vers = buf->v_version = le16toh(buf->v_version); 842 buf->v_oemstr = le32toh(buf->v_oemstr); 843 buf->v_flags = le32toh(buf->v_flags); 844 buf->v_modetable = le32toh(buf->v_modetable); 845 buf->v_memsize = le16toh(buf->v_memsize); 846 buf->v_revision = le16toh(buf->v_revision); 847 buf->v_venderstr = le32toh(buf->v_venderstr); 848 buf->v_prodstr = le32toh(buf->v_prodstr); 849 buf->v_revstr = le32toh(buf->v_revstr); 850 851 if (vers < 0x0102) { 852 printf("VESA: VBE version %d.%d is not supported; " 853 "version 1.2 or later is required.\n", 854 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 855 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 856 goto fail; 857 } 858 859 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 860 if (vers >= 0x0200) { 861 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 862 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 863 VESA_STRCPY(vesa_revstr, buf->v_revstr); 864 } 865 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 866 sizeof(VESA_VIA_CLE266)) == 0; 867 868 if (buf->v_modetable == 0) 869 goto fail; 870 871 msize = (size_t)buf->v_memsize * 64 * 1024; 872 873 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 874 875 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 876 (vesa_vmodetab[i] != 0xffff); ++i) { 877 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 878 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 879 continue; 880 881 vmode.v_modeattr = le16toh(vmode.v_modeattr); 882 vmode.v_wgran = le16toh(vmode.v_wgran); 883 vmode.v_wsize = le16toh(vmode.v_wsize); 884 vmode.v_waseg = le16toh(vmode.v_waseg); 885 vmode.v_wbseg = le16toh(vmode.v_wbseg); 886 vmode.v_posfunc = le32toh(vmode.v_posfunc); 887 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 888 vmode.v_width = le16toh(vmode.v_width); 889 vmode.v_height = le16toh(vmode.v_height); 890 vmode.v_lfb = le32toh(vmode.v_lfb); 891 vmode.v_offscreen = le32toh(vmode.v_offscreen); 892 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 893 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 894 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 895 896 /* reject unsupported modes */ 897#if 0 898 if ((vmode.v_modeattr & 899 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 900 (V_MODESUPP | V_MODEOPTINFO)) 901 continue; 902#else 903 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 904#if VESA_DEBUG > 1 905 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 906 " attr = %x\n", 907 vmode.v_modeattr & V_MODEGRAPHICS ? 908 "graphics" : "text", 909 vmode.v_width, vmode.v_height, vmode.v_bpp, 910 vmode.v_modeattr); 911#endif 912 continue; 913 } 914#endif 915 916 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 917 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 918 bsize *= vmode.v_planes; 919 920 /* Does it have enough memory to support this mode? */ 921 if (msize < bsize) { 922#if VESA_DEBUG > 1 923 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 924 " attr = %x, not enough memory\n", 925 vmode.v_modeattr & V_MODEGRAPHICS ? 926 "graphics" : "text", 927 vmode.v_width, vmode.v_height, vmode.v_bpp, 928 vmode.v_modeattr); 929#endif 930 continue; 931 } 932 if (bsize > vesa_vmem_max) 933 vesa_vmem_max = bsize; 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 if (vesa_vmode != NULL) 1030 vesa_vmode[modes].vi_mode = EOT; 1031 1032 if (bootverbose) 1033 printf("VESA: %d mode(s) found\n", modes); 1034 1035 if (modes == 0) 1036 goto fail; 1037 1038 x86bios_free(vmbuf, sizeof(*buf)); 1039 1040 /* Probe supported save/restore states. */ 1041 for (i = 0; i < 4; i++) 1042 if (vesa_bios_state_buf_size(1 << i) > 0) 1043 vesa_state |= 1 << i; 1044 if (vesa_state != 0) 1045 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1046 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1047 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1048 if (vesa_state_buf_size > 0) { 1049 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1050 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1051 } 1052 1053 return (0); 1054 1055fail: 1056 x86bios_free(vmbuf, sizeof(buf)); 1057 vesa_bios_uninit(); 1058 return (1); 1059} 1060 1061static void 1062vesa_bios_uninit(void) 1063{ 1064 1065 if (vesa_bios != NULL) { 1066 x86bios_set_intr(0x10, vesa_bios_int10); 1067 vesa_bios_offs = VESA_BIOS_OFFSET; 1068 x86bios_free(vesa_bios, vesa_bios_size); 1069 vesa_bios = NULL; 1070 } 1071 if (vesa_adp_info != NULL) { 1072 free(vesa_adp_info, M_DEVBUF); 1073 vesa_adp_info = NULL; 1074 } 1075 if (vesa_oemstr != NULL) { 1076 free(vesa_oemstr, M_DEVBUF); 1077 vesa_oemstr = NULL; 1078 } 1079 if (vesa_venderstr != NULL) { 1080 free(vesa_venderstr, M_DEVBUF); 1081 vesa_venderstr = NULL; 1082 } 1083 if (vesa_prodstr != NULL) { 1084 free(vesa_prodstr, M_DEVBUF); 1085 vesa_prodstr = NULL; 1086 } 1087 if (vesa_revstr != NULL) { 1088 free(vesa_revstr, M_DEVBUF); 1089 vesa_revstr = NULL; 1090 } 1091 if (vesa_vmode != NULL) { 1092 free(vesa_vmode, M_DEVBUF); 1093 vesa_vmode = NULL; 1094 } 1095 if (vesa_palette != NULL) { 1096 x86bios_free(vesa_palette, 1097 VESA_PALETTE_SIZE + vesa_state_buf_size); 1098 vesa_palette = NULL; 1099 } 1100} 1101 1102static void 1103vesa_clear_modes(video_info_t *info, int color) 1104{ 1105 while (info->vi_mode != EOT) { 1106 if ((info->vi_flags & V_INFO_COLOR) != color) 1107 info->vi_mode = NA; 1108 ++info; 1109 } 1110} 1111 1112/* entry points */ 1113 1114static int 1115vesa_configure(int flags) 1116{ 1117 video_adapter_t *adp; 1118 int adapters; 1119 int error; 1120 int i; 1121 1122 if (vesa_init_done) 1123 return (0); 1124 if (flags & VIO_PROBE_ONLY) 1125 return (0); 1126 1127 /* 1128 * If the VESA module has already been loaded, abort loading 1129 * the module this time. 1130 */ 1131 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1132 if (adp->va_flags & V_ADP_VESA) 1133 return (ENXIO); 1134 if (adp->va_type == KD_VGA) 1135 break; 1136 } 1137 1138 /* 1139 * The VGA adapter is not found. This is because either 1140 * 1) the VGA driver has not been initialized, or 2) the VGA card 1141 * is not present. If 1) is the case, we shall defer 1142 * initialization for now and try again later. 1143 */ 1144 if (adp == NULL) { 1145 vga_sub_configure = vesa_configure; 1146 return (ENODEV); 1147 } 1148 1149 /* count number of registered adapters */ 1150 for (++i; vid_get_adapter(i) != NULL; ++i) 1151 ; 1152 adapters = i; 1153 1154 /* call VESA BIOS */ 1155 vesa_adp = adp; 1156 if (vesa_bios_init()) { 1157 vesa_adp = NULL; 1158 return (ENXIO); 1159 } 1160 vesa_adp->va_flags |= V_ADP_VESA; 1161 1162 /* remove conflicting modes if we have more than one adapter */ 1163 if (adapters > 1) { 1164 vesa_clear_modes(vesa_vmode, 1165 (vesa_adp->va_flags & V_ADP_COLOR) ? 1166 V_INFO_COLOR : 0); 1167 } 1168 1169 if ((error = vesa_load_ioctl()) == 0) { 1170 prevvidsw = vidsw[vesa_adp->va_index]; 1171 vidsw[vesa_adp->va_index] = &vesavidsw; 1172 vesa_init_done = TRUE; 1173 } else { 1174 vesa_adp = NULL; 1175 return (error); 1176 } 1177 1178 return (0); 1179} 1180 1181#if 0 1182static int 1183vesa_nop(void) 1184{ 1185 1186 return (0); 1187} 1188#endif 1189 1190static int 1191vesa_error(void) 1192{ 1193 1194 return (1); 1195} 1196 1197static int 1198vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1199{ 1200 1201 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1202} 1203 1204static int 1205vesa_init(int unit, video_adapter_t *adp, int flags) 1206{ 1207 1208 return ((*prevvidsw->init)(unit, adp, flags)); 1209} 1210 1211static int 1212vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1213{ 1214 int i; 1215 1216 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1217 return (0); 1218 1219 if (adp != vesa_adp) 1220 return (1); 1221 1222 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1223 vesa_adp->va_flags & V_ADP_COLOR, mode); 1224 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1225 if (vesa_vmode[i].vi_mode == NA) 1226 continue; 1227 if (vesa_vmode[i].vi_mode == mode) { 1228 *info = vesa_vmode[i]; 1229 return (0); 1230 } 1231 } 1232 return (1); 1233} 1234 1235static int 1236vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1237{ 1238 int i; 1239 1240 if ((*prevvidsw->query_mode)(adp, info) == 0) 1241 return (0); 1242 if (adp != vesa_adp) 1243 return (ENODEV); 1244 1245 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1246 if ((info->vi_width != 0) 1247 && (info->vi_width != vesa_vmode[i].vi_width)) 1248 continue; 1249 if ((info->vi_height != 0) 1250 && (info->vi_height != vesa_vmode[i].vi_height)) 1251 continue; 1252 if ((info->vi_cwidth != 0) 1253 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1254 continue; 1255 if ((info->vi_cheight != 0) 1256 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1257 continue; 1258 if ((info->vi_depth != 0) 1259 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1260 continue; 1261 if ((info->vi_planes != 0) 1262 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1263 continue; 1264 /* pixel format, memory model */ 1265 if ((info->vi_flags != 0) 1266 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1267 continue; 1268 *info = vesa_vmode[i]; 1269 return (0); 1270 } 1271 return (ENODEV); 1272} 1273 1274static int 1275vesa_set_mode(video_adapter_t *adp, int mode) 1276{ 1277 video_info_t info; 1278 1279 if (adp != vesa_adp) 1280 return ((*prevvidsw->set_mode)(adp, mode)); 1281 1282 mode = vesa_map_gen_mode_num(adp->va_type, 1283 adp->va_flags & V_ADP_COLOR, mode); 1284#if VESA_DEBUG > 0 1285 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1286 adp->va_mode, adp->va_mode, mode, mode); 1287#endif 1288 /* 1289 * If the current mode is a VESA mode and the new mode is not, 1290 * restore the state of the adapter first by setting one of the 1291 * standard VGA mode, so that non-standard, extended SVGA registers 1292 * are set to the state compatible with the standard VGA modes. 1293 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1294 * the new mode correctly. 1295 */ 1296 if (VESA_MODE(adp->va_mode)) { 1297 if (!VESA_MODE(mode) && 1298 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1299 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1300 vesa_bios_set_dac(6); 1301 adp->va_flags &= ~V_ADP_DAC8; 1302 } 1303 int10_set_mode(adp->va_initial_bios_mode); 1304 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1305 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1306 /* 1307 * Once (*prevvidsw->get_info)() succeeded, 1308 * (*prevvidsw->set_mode)() below won't fail... 1309 */ 1310 } 1311 } 1312 1313 /* we may not need to handle this mode after all... */ 1314 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1315 return (0); 1316 1317 /* is the new mode supported? */ 1318 if (vesa_get_info(adp, mode, &info)) 1319 return (1); 1320 /* assert(VESA_MODE(mode)); */ 1321 1322#if VESA_DEBUG > 0 1323 printf("VESA: about to set a VESA mode...\n"); 1324#endif 1325 /* don't use the linear frame buffer for text modes. XXX */ 1326 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1327 info.vi_flags &= ~V_INFO_LINEAR; 1328 1329 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1330 mode |= 0x4000; 1331 if (vesa_bios_set_mode(mode | 0x8000)) 1332 return (1); 1333 1334 /* Palette format is reset by the above VBE function call. */ 1335 adp->va_flags &= ~V_ADP_DAC8; 1336 1337 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1338 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1339 vesa_bios_set_dac(8) > 6) 1340 adp->va_flags |= V_ADP_DAC8; 1341 1342 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1343 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1344 1345#if VESA_DEBUG > 0 1346 printf("VESA: mode set!\n"); 1347#endif 1348 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1349 vesa_adp->va_flags &= ~V_ADP_COLOR; 1350 vesa_adp->va_flags |= 1351 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1352 vesa_adp->va_crtc_addr = 1353 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1354 1355 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1356 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1357 vesa_adp->va_line_width /= info.vi_planes; 1358 1359#ifdef MODE_TABLE_BROKEN 1360 /* If VBE function returns bigger bytes per scan line, use it. */ 1361 { 1362 int bpsl = vesa_bios_get_line_length(); 1363 if (bpsl > vesa_adp->va_line_width) { 1364 vesa_adp->va_line_width = bpsl; 1365 info.vi_buffer_size = bpsl * info.vi_height; 1366 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1367 info.vi_buffer_size *= info.vi_planes; 1368 } 1369 } 1370#endif 1371 1372 if (info.vi_flags & V_INFO_LINEAR) { 1373#if VESA_DEBUG > 1 1374 printf("VESA: setting up LFB\n"); 1375#endif 1376 vesa_adp->va_buffer = 1377 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1378 vesa_vmem_max, PAT_WRITE_COMBINING); 1379 vesa_adp->va_window = vesa_adp->va_buffer; 1380 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1381 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1382 } else { 1383 vesa_adp->va_buffer = 0; 1384 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1385 vesa_adp->va_window_size = info.vi_window_size; 1386 vesa_adp->va_window_gran = info.vi_window_gran; 1387 } 1388 vesa_adp->va_buffer_size = info.vi_buffer_size; 1389 vesa_adp->va_window_orig = 0; 1390 vesa_adp->va_disp_start.x = 0; 1391 vesa_adp->va_disp_start.y = 0; 1392#if VESA_DEBUG > 0 1393 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1394 info.vi_width, vesa_adp->va_line_width); 1395#endif 1396 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1397 1398 /* move hardware cursor out of the way */ 1399 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1400 1401 return (0); 1402} 1403 1404static int 1405vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1406 u_char *data, int ch, int count) 1407{ 1408 1409 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1410 ch, count)); 1411} 1412 1413static int 1414vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1415 u_char *data, int ch, int count) 1416{ 1417 1418 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1419 ch, count)); 1420} 1421 1422static int 1423vesa_show_font(video_adapter_t *adp, int page) 1424{ 1425 1426 return ((*prevvidsw->show_font)(adp, page)); 1427} 1428 1429static int 1430vesa_save_palette(video_adapter_t *adp, u_char *palette) 1431{ 1432 int bits; 1433 1434 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1435 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1436 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1437 return (0); 1438 } 1439 1440 return ((*prevvidsw->save_palette)(adp, palette)); 1441} 1442 1443static int 1444vesa_load_palette(video_adapter_t *adp, u_char *palette) 1445{ 1446 int bits; 1447 1448 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1449 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1450 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1451 return (0); 1452 } 1453 1454 return ((*prevvidsw->load_palette)(adp, palette)); 1455} 1456 1457static int 1458vesa_set_border(video_adapter_t *adp, int color) 1459{ 1460 1461 return ((*prevvidsw->set_border)(adp, color)); 1462} 1463 1464static int 1465vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1466{ 1467 void *buf; 1468 size_t bsize; 1469 1470 if (adp != vesa_adp || (size == 0 && vesa_state_buf_size == 0)) 1471 return ((*prevvidsw->save_state)(adp, p, size)); 1472 1473 bsize = offsetof(adp_state_t, regs) + vesa_state_buf_size; 1474 if (size == 0) 1475 return (bsize); 1476 if (vesa_state_buf_size > 0 && size < bsize) 1477 return (EINVAL); 1478 1479 if (vesa_vmem_buf != NULL) { 1480 free(vesa_vmem_buf, M_DEVBUF); 1481 vesa_vmem_buf = NULL; 1482 } 1483 if (VESA_MODE(adp->va_mode)) { 1484 buf = (void *)adp->va_buffer; 1485 if (buf != NULL) { 1486 bsize = adp->va_buffer_size; 1487 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT); 1488 if (vesa_vmem_buf != NULL) 1489 bcopy(buf, vesa_vmem_buf, bsize); 1490 } 1491 } 1492 if (vesa_state_buf_size == 0) 1493 return ((*prevvidsw->save_state)(adp, p, size)); 1494 ((adp_state_t *)p)->sig = V_STATE_SIG; 1495 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1496} 1497 1498static int 1499vesa_load_state(video_adapter_t *adp, void *p) 1500{ 1501 void *buf; 1502 size_t bsize; 1503 int error, mode; 1504 1505 if (adp != vesa_adp) 1506 return ((*prevvidsw->load_state)(adp, p)); 1507 1508 /* Try BIOS POST to restore a sane state. */ 1509 (void)vesa_bios_post(); 1510 bsize = adp->va_buffer_size; 1511 mode = adp->va_mode; 1512 error = vesa_set_mode(adp, adp->va_initial_mode); 1513 if (mode != adp->va_initial_mode) 1514 error = vesa_set_mode(adp, mode); 1515 1516 if (vesa_vmem_buf != NULL) { 1517 if (error == 0 && VESA_MODE(mode)) { 1518 buf = (void *)adp->va_buffer; 1519 if (buf != NULL) 1520 bcopy(vesa_vmem_buf, buf, bsize); 1521 } 1522 free(vesa_vmem_buf, M_DEVBUF); 1523 vesa_vmem_buf = NULL; 1524 } 1525 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1526 return ((*prevvidsw->load_state)(adp, p)); 1527 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1528} 1529 1530#if 0 1531static int 1532vesa_get_origin(video_adapter_t *adp, off_t *offset) 1533{ 1534 x86regs_t regs; 1535 1536 x86bios_init_regs(®s); 1537 regs.R_AX = 0x4f05; 1538 regs.R_BL = 0x10; 1539 1540 x86bios_intr(®s, 0x10); 1541 1542 if (regs.R_AX != 0x004f) 1543 return (1); 1544 *offset = regs.DX * adp->va_window_gran; 1545 1546 return (0); 1547} 1548#endif 1549 1550static int 1551vesa_set_origin(video_adapter_t *adp, off_t offset) 1552{ 1553 x86regs_t regs; 1554 1555 /* 1556 * This function should return as quickly as possible to 1557 * maintain good performance of the system. For this reason, 1558 * error checking is kept minimal and let the VESA BIOS to 1559 * detect error. 1560 */ 1561 if (adp != vesa_adp) 1562 return ((*prevvidsw->set_win_org)(adp, offset)); 1563 1564 /* if this is a linear frame buffer, do nothing */ 1565 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1566 return (0); 1567 /* XXX */ 1568 if (adp->va_window_gran == 0) 1569 return (1); 1570 1571 x86bios_init_regs(®s); 1572 regs.R_AX = 0x4f05; 1573 regs.R_DX = offset / adp->va_window_gran; 1574 1575 x86bios_intr(®s, 0x10); 1576 1577 if (regs.R_AX != 0x004f) 1578 return (1); 1579 1580 x86bios_init_regs(®s); 1581 regs.R_AX = 0x4f05; 1582 regs.R_BL = 1; 1583 regs.R_DX = offset / adp->va_window_gran; 1584 x86bios_intr(®s, 0x10); 1585 1586 adp->va_window_orig = rounddown(offset, adp->va_window_gran); 1587 return (0); /* XXX */ 1588} 1589 1590static int 1591vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1592{ 1593 1594 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1595} 1596 1597static int 1598vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1599{ 1600 1601 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1602} 1603 1604static int 1605vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1606 int celsize, int blink) 1607{ 1608 1609 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1610 blink)); 1611} 1612 1613static int 1614vesa_blank_display(video_adapter_t *adp, int mode) 1615{ 1616 1617 /* XXX: use VESA DPMS */ 1618 return ((*prevvidsw->blank_display)(adp, mode)); 1619} 1620 1621static int 1622vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1623 int prot, vm_memattr_t *memattr) 1624{ 1625 1626#if VESA_DEBUG > 0 1627 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1628 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1629#endif 1630 1631 if ((adp == vesa_adp) && 1632 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1633 /* va_window_size == va_buffer_size/vi_planes */ 1634 /* XXX: is this correct? */ 1635 if (offset > adp->va_window_size - PAGE_SIZE) 1636 return (-1); 1637 *paddr = adp->va_info.vi_buffer + offset; 1638#ifdef VM_MEMATTR_WRITE_COMBINING 1639 *memattr = VM_MEMATTR_WRITE_COMBINING; 1640#endif 1641 return (0); 1642 } 1643 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1644} 1645 1646static int 1647vesa_clear(video_adapter_t *adp) 1648{ 1649 1650 return ((*prevvidsw->clear)(adp)); 1651} 1652 1653static int 1654vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1655{ 1656 1657 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1658} 1659 1660static int 1661vesa_bitblt(video_adapter_t *adp,...) 1662{ 1663 1664 /* FIXME */ 1665 return (1); 1666} 1667 1668static int 1669get_palette(video_adapter_t *adp, int base, int count, 1670 u_char *red, u_char *green, u_char *blue, u_char *trans) 1671{ 1672 u_char *r; 1673 u_char *g; 1674 u_char *b; 1675 int bits; 1676 int error; 1677 1678 if (base < 0 || base >= 256 || count < 0 || count > 256) 1679 return (1); 1680 if ((base + count) > 256) 1681 return (1); 1682 if (!VESA_MODE(adp->va_mode)) 1683 return (1); 1684 1685 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1686 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1687 g = r + count; 1688 b = g + count; 1689 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1690 if (error == 0) { 1691 copyout(r, red, count); 1692 copyout(g, green, count); 1693 copyout(b, blue, count); 1694 if (trans != NULL) { 1695 bzero(r, count); 1696 copyout(r, trans, count); 1697 } 1698 } 1699 free(r, M_DEVBUF); 1700 1701 return (error); 1702} 1703 1704static int 1705set_palette(video_adapter_t *adp, int base, int count, 1706 u_char *red, u_char *green, u_char *blue, u_char *trans) 1707{ 1708 u_char *r; 1709 u_char *g; 1710 u_char *b; 1711 int bits; 1712 int error; 1713 1714 if (base < 0 || base >= 256 || count < 0 || count > 256) 1715 return (1); 1716 if ((base + count) > 256) 1717 return (1); 1718 if (!VESA_MODE(adp->va_mode)) 1719 return (1); 1720 1721 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1722 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1723 g = r + count; 1724 b = g + count; 1725 copyin(red, r, count); 1726 copyin(green, g, count); 1727 copyin(blue, b, count); 1728 1729 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1730 free(r, M_DEVBUF); 1731 1732 return (error); 1733} 1734 1735static int 1736vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1737{ 1738 int bytes; 1739 1740 if (adp != vesa_adp) 1741 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1742 1743 switch (cmd) { 1744 case FBIO_SETWINORG: /* set frame buffer window origin */ 1745 if (!VESA_MODE(adp->va_mode)) 1746 return (*prevvidsw->ioctl)(adp, cmd, arg); 1747 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1748 1749 case FBIO_SETDISPSTART: /* set display start address */ 1750 if (!VESA_MODE(adp->va_mode)) 1751 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1752 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1753 ((video_display_start_t *)arg)->y)) 1754 return (ENODEV); 1755 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1756 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1757 return (0); 1758 1759 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1760 if (!VESA_MODE(adp->va_mode)) 1761 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1762 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1763 return (ENODEV); 1764 adp->va_line_width = bytes; 1765#if VESA_DEBUG > 1 1766 printf("new line width:%d\n", adp->va_line_width); 1767#endif 1768 return (0); 1769 1770 case FBIO_GETPALETTE: /* get color palette */ 1771 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1772 ((video_color_palette_t *)arg)->count, 1773 ((video_color_palette_t *)arg)->red, 1774 ((video_color_palette_t *)arg)->green, 1775 ((video_color_palette_t *)arg)->blue, 1776 ((video_color_palette_t *)arg)->transparent)) 1777 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1778 return (0); 1779 1780 1781 case FBIO_SETPALETTE: /* set color palette */ 1782 if (set_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 case FBIOGETCMAP: /* get color palette */ 1792 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1793 ((struct fbcmap *)arg)->count, 1794 ((struct fbcmap *)arg)->red, 1795 ((struct fbcmap *)arg)->green, 1796 ((struct fbcmap *)arg)->blue, NULL)) 1797 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1798 return (0); 1799 1800 case FBIOPUTCMAP: /* set color palette */ 1801 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1802 ((struct fbcmap *)arg)->count, 1803 ((struct fbcmap *)arg)->red, 1804 ((struct fbcmap *)arg)->green, 1805 ((struct fbcmap *)arg)->blue, NULL)) 1806 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1807 return (0); 1808 1809 default: 1810 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1811 } 1812} 1813 1814static int 1815vesa_diag(video_adapter_t *adp, int level) 1816{ 1817 int error; 1818 1819 /* call the previous handler first */ 1820 error = (*prevvidsw->diag)(adp, level); 1821 if (error) 1822 return (error); 1823 1824 if (adp != vesa_adp) 1825 return (1); 1826 1827 if (level <= 0) 1828 return (0); 1829 1830 return (0); 1831} 1832 1833static int 1834vesa_bios_info(int level) 1835{ 1836#if VESA_DEBUG > 1 1837 struct vesa_mode vmode; 1838 int i; 1839#endif 1840 uint16_t vers; 1841 1842 vers = vesa_adp_info->v_version; 1843 1844 if (bootverbose) { 1845 /* general adapter information */ 1846 printf( 1847 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1848 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1849 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1850 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1851 vesa_vmodetab, vesa_adp_info->v_modetable); 1852 1853 /* OEM string */ 1854 if (vesa_oemstr != NULL) 1855 printf("VESA: %s\n", vesa_oemstr); 1856 } 1857 1858 if (level <= 0) 1859 return (0); 1860 1861 if (vers >= 0x0200 && bootverbose) { 1862 /* vender name, product name, product revision */ 1863 printf("VESA: %s %s %s\n", 1864 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1865 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1866 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1867 } 1868 1869#if VESA_DEBUG > 1 1870 /* mode information */ 1871 for (i = 0; 1872 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1873 && (vesa_vmodetab[i] != 0xffff); ++i) { 1874 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1875 continue; 1876 1877 /* print something for diagnostic purpose */ 1878 printf("VESA: mode:0x%03x, flags:0x%04x", 1879 vesa_vmodetab[i], vmode.v_modeattr); 1880 if (vmode.v_modeattr & V_MODEOPTINFO) { 1881 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1882 printf(", G %dx%dx%d %d, ", 1883 vmode.v_width, vmode.v_height, 1884 vmode.v_bpp, vmode.v_planes); 1885 } else { 1886 printf(", T %dx%d, ", 1887 vmode.v_width, vmode.v_height); 1888 } 1889 printf("font:%dx%d, ", 1890 vmode.v_cwidth, vmode.v_cheight); 1891 printf("pages:%d, mem:%d", 1892 vmode.v_ipages + 1, vmode.v_memmodel); 1893 } 1894 if (vmode.v_modeattr & V_MODELFB) { 1895 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1896 vmode.v_lfb, vmode.v_offscreen, 1897 vmode.v_offscreensize*1024); 1898 } 1899 printf("\n"); 1900 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1901 vmode.v_waseg, vmode.v_waattr, 1902 vmode.v_wbseg, vmode.v_wbattr); 1903 printf("size:%dk, gran:%dk\n", 1904 vmode.v_wsize, vmode.v_wgran); 1905 } 1906#endif /* VESA_DEBUG > 1 */ 1907 1908 return (0); 1909} 1910 1911/* module loading */ 1912 1913static int 1914vesa_load(void) 1915{ 1916 int error; 1917 1918 if (vesa_init_done) 1919 return (0); 1920 1921 /* locate a VGA adapter */ 1922 vesa_adp = NULL; 1923 error = vesa_configure(0); 1924 1925 if (error == 0) 1926 vesa_bios_info(bootverbose); 1927 1928 return (error); 1929} 1930 1931static int 1932vesa_unload(void) 1933{ 1934 u_char palette[256*3]; 1935 int error; 1936 1937 /* if the adapter is currently in a VESA mode, don't unload */ 1938 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1939 return (EBUSY); 1940 /* 1941 * FIXME: if there is at least one vty which is in a VESA mode, 1942 * we shouldn't be unloading! XXX 1943 */ 1944 1945 if ((error = vesa_unload_ioctl()) == 0) { 1946 if (vesa_adp != NULL) { 1947 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1948 vesa_bios_save_palette(0, 256, palette, 8); 1949 vesa_bios_set_dac(6); 1950 vesa_adp->va_flags &= ~V_ADP_DAC8; 1951 vesa_bios_load_palette(0, 256, palette, 6); 1952 } 1953 vesa_adp->va_flags &= ~V_ADP_VESA; 1954 vidsw[vesa_adp->va_index] = prevvidsw; 1955 } 1956 } 1957 1958 vesa_bios_uninit(); 1959 1960 return (error); 1961} 1962 1963static int 1964vesa_mod_event(module_t mod, int type, void *data) 1965{ 1966 1967 switch (type) { 1968 case MOD_LOAD: 1969 return (vesa_load()); 1970 case MOD_UNLOAD: 1971 return (vesa_unload()); 1972 } 1973 return (EOPNOTSUPP); 1974} 1975 1976static moduledata_t vesa_mod = { 1977 "vesa", 1978 vesa_mod_event, 1979 NULL, 1980}; 1981 1982DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1983MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1984 1985#endif /* VGA_NO_MODE_CHANGE */ 1986