vesa.c revision 330897
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: stable/11/sys/dev/fb/vesa.c 330897 2018-03-14 03:19:51Z eadler $"); 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, NULL, "VESA debugging"); 106static int vesa_shadow_rom; 107SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 108 0, "Enable video BIOS shadow"); 109 110/* VESA functions */ 111#if 0 112static int vesa_nop(void); 113#endif 114static int vesa_error(void); 115static vi_probe_t vesa_probe; 116static vi_init_t vesa_init; 117static vi_get_info_t vesa_get_info; 118static vi_query_mode_t vesa_query_mode; 119static vi_set_mode_t vesa_set_mode; 120static vi_save_font_t vesa_save_font; 121static vi_load_font_t vesa_load_font; 122static vi_show_font_t vesa_show_font; 123static vi_save_palette_t vesa_save_palette; 124static vi_load_palette_t vesa_load_palette; 125static vi_set_border_t vesa_set_border; 126static vi_save_state_t vesa_save_state; 127static vi_load_state_t vesa_load_state; 128static vi_set_win_org_t vesa_set_origin; 129static vi_read_hw_cursor_t vesa_read_hw_cursor; 130static vi_set_hw_cursor_t vesa_set_hw_cursor; 131static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 132static vi_blank_display_t vesa_blank_display; 133static vi_mmap_t vesa_mmap; 134static vi_ioctl_t vesa_ioctl; 135static vi_clear_t vesa_clear; 136static vi_fill_rect_t vesa_fill_rect; 137static vi_bitblt_t vesa_bitblt; 138static vi_diag_t vesa_diag; 139static int vesa_bios_info(int level); 140 141static video_switch_t vesavidsw = { 142 vesa_probe, 143 vesa_init, 144 vesa_get_info, 145 vesa_query_mode, 146 vesa_set_mode, 147 vesa_save_font, 148 vesa_load_font, 149 vesa_show_font, 150 vesa_save_palette, 151 vesa_load_palette, 152 vesa_set_border, 153 vesa_save_state, 154 vesa_load_state, 155 vesa_set_origin, 156 vesa_read_hw_cursor, 157 vesa_set_hw_cursor, 158 vesa_set_hw_cursor_shape, 159 vesa_blank_display, 160 vesa_mmap, 161 vesa_ioctl, 162 vesa_clear, 163 vesa_fill_rect, 164 vesa_bitblt, 165 vesa_error, 166 vesa_error, 167 vesa_diag, 168}; 169 170static video_switch_t *prevvidsw; 171 172/* VESA BIOS video modes */ 173#define VESA_MAXMODES 64 174#define EOT (-1) 175#define NA (-2) 176 177#define MODE_TABLE_DELTA 8 178 179static int vesa_vmode_max; 180static video_info_t *vesa_vmode; 181 182static int vesa_init_done; 183static struct vesa_info *vesa_adp_info; 184static u_int16_t *vesa_vmodetab; 185static char *vesa_oemstr; 186static char *vesa_venderstr; 187static char *vesa_prodstr; 188static char *vesa_revstr; 189 190/* local macros and functions */ 191#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 192 193static int int10_set_mode(int mode); 194static int vesa_bios_post(void); 195static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 196static int vesa_bios_set_mode(int mode); 197#if 0 198static int vesa_bios_get_dac(void); 199#endif 200static int vesa_bios_set_dac(int bits); 201static int vesa_bios_save_palette(int start, int colors, u_char *palette, 202 int bits); 203static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 204 u_char *b, int bits); 205static int vesa_bios_load_palette(int start, int colors, u_char *palette, 206 int bits); 207static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 208 u_char *b, int bits); 209#define STATE_SIZE 0 210#define STATE_SAVE 1 211#define STATE_LOAD 2 212static size_t vesa_bios_state_buf_size(int); 213static int vesa_bios_save_restore(int code, void *p); 214#ifdef MODE_TABLE_BROKEN 215static int vesa_bios_get_line_length(void); 216#endif 217static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 218#if 0 219static int vesa_bios_get_start(int *x, int *y); 220#endif 221static int vesa_bios_set_start(int x, int y); 222static int vesa_map_gen_mode_num(int type, int color, int mode); 223static int vesa_translate_flags(u_int16_t vflags); 224static int vesa_translate_mmodel(u_int8_t vmodel); 225static int vesa_get_bpscanline(struct vesa_mode *vmode); 226static int vesa_bios_init(void); 227static void vesa_bios_uninit(void); 228static void vesa_clear_modes(video_info_t *info, int color); 229 230#if 0 231static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 232#endif 233 234/* INT 10 BIOS calls */ 235static int 236int10_set_mode(int mode) 237{ 238 x86regs_t regs; 239 240 x86bios_init_regs(®s); 241 regs.R_AL = mode; 242 243 x86bios_intr(®s, 0x10); 244 245 return (0); 246} 247 248static int 249vesa_bios_post(void) 250{ 251 x86regs_t regs; 252 devclass_t dc; 253 device_t *devs; 254 device_t dev; 255 int count, i, is_pci; 256 257 if (x86bios_get_orm(vesa_bios_offs) == NULL) 258 return (1); 259 260 dev = NULL; 261 is_pci = 0; 262 263 /* Find the matching PCI video controller. */ 264 dc = devclass_find("vgapci"); 265 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 266 for (i = 0; i < count; i++) 267 if (device_get_flags(devs[i]) != 0 && 268 x86bios_match_device(vesa_bios_offs, devs[i])) { 269 dev = devs[i]; 270 is_pci = 1; 271 break; 272 } 273 free(devs, M_TEMP); 274 } 275 276 /* Try VGA if a PCI device is not found. */ 277 if (dev == NULL) { 278 dc = devclass_find(VGA_DRIVER_NAME); 279 if (dc != NULL) 280 dev = devclass_get_device(dc, 0); 281 } 282 283 if (bootverbose) 284 printf("%s: calling BIOS POST\n", 285 dev == NULL ? "VESA" : device_get_nameunit(dev)); 286 287 x86bios_init_regs(®s); 288 if (is_pci) { 289 regs.R_AH = pci_get_bus(dev); 290 regs.R_AL = (pci_get_slot(dev) << 3) | 291 (pci_get_function(dev) & 0x07); 292 } 293 regs.R_DL = 0x80; 294 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 295 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 296 297 if (x86bios_get_intr(0x10) == 0) 298 return (1); 299 300 return (0); 301} 302 303/* VESA BIOS calls */ 304static int 305vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 306{ 307 x86regs_t regs; 308 uint32_t offs; 309 void *buf; 310 311 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 312 if (buf == NULL) 313 return (1); 314 315 x86bios_init_regs(®s); 316 regs.R_AX = 0x4f01; 317 regs.R_CX = mode; 318 319 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 320 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 321 322 x86bios_intr(®s, 0x10); 323 324 if (regs.R_AX != 0x004f) { 325 x86bios_free(buf, sizeof(*vmode)); 326 return (1); 327 } 328 329 bcopy(buf, vmode, sizeof(*vmode)); 330 x86bios_free(buf, sizeof(*vmode)); 331 332 return (0); 333} 334 335static int 336vesa_bios_set_mode(int mode) 337{ 338 x86regs_t regs; 339 340 x86bios_init_regs(®s); 341 regs.R_AX = 0x4f02; 342 regs.R_BX = mode; 343 344 x86bios_intr(®s, 0x10); 345 346 return (regs.R_AX != 0x004f); 347} 348 349#if 0 350static int 351vesa_bios_get_dac(void) 352{ 353 x86regs_t regs; 354 355 x86bios_init_regs(®s); 356 regs.R_AX = 0x4f08; 357 regs.R_BL = 1; 358 359 x86bios_intr(®s, 0x10); 360 361 if (regs.R_AX != 0x004f) 362 return (6); 363 364 return (regs.R_BH); 365} 366#endif 367 368static int 369vesa_bios_set_dac(int bits) 370{ 371 x86regs_t regs; 372 373 x86bios_init_regs(®s); 374 regs.R_AX = 0x4f08; 375 /* regs.R_BL = 0; */ 376 regs.R_BH = bits; 377 378 x86bios_intr(®s, 0x10); 379 380 if (regs.R_AX != 0x004f) 381 return (6); 382 383 return (regs.R_BH); 384} 385 386static int 387vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 388{ 389 x86regs_t regs; 390 int i; 391 392 x86bios_init_regs(®s); 393 regs.R_AX = 0x4f09; 394 regs.R_BL = 1; 395 regs.R_CX = colors; 396 regs.R_DX = start; 397 398 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 399 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 400 401 bits = 8 - bits; 402 mtx_lock(&vesa_lock); 403 x86bios_intr(®s, 0x10); 404 if (regs.R_AX != 0x004f) { 405 mtx_unlock(&vesa_lock); 406 return (1); 407 } 408 for (i = 0; i < colors; ++i) { 409 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 410 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 411 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 412 } 413 mtx_unlock(&vesa_lock); 414 415 return (0); 416} 417 418static int 419vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 420 int bits) 421{ 422 x86regs_t regs; 423 int i; 424 425 x86bios_init_regs(®s); 426 regs.R_AX = 0x4f09; 427 regs.R_BL = 1; 428 regs.R_CX = colors; 429 regs.R_DX = start; 430 431 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 432 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 433 434 bits = 8 - bits; 435 mtx_lock(&vesa_lock); 436 x86bios_intr(®s, 0x10); 437 if (regs.R_AX != 0x004f) { 438 mtx_unlock(&vesa_lock); 439 return (1); 440 } 441 for (i = 0; i < colors; ++i) { 442 r[i] = vesa_palette[i * 4 + 2] << bits; 443 g[i] = vesa_palette[i * 4 + 1] << bits; 444 b[i] = vesa_palette[i * 4] << bits; 445 } 446 mtx_unlock(&vesa_lock); 447 448 return (0); 449} 450 451static int 452vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 453{ 454 x86regs_t regs; 455 int i; 456 457 x86bios_init_regs(®s); 458 regs.R_AX = 0x4f09; 459 /* regs.R_BL = 0; */ 460 regs.R_CX = colors; 461 regs.R_DX = start; 462 463 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 464 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 465 466 bits = 8 - bits; 467 mtx_lock(&vesa_lock); 468 for (i = 0; i < colors; ++i) { 469 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 470 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 471 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 472 vesa_palette[i * 4 + 3] = 0; 473 } 474 x86bios_intr(®s, 0x10); 475 mtx_unlock(&vesa_lock); 476 477 return (regs.R_AX != 0x004f); 478} 479 480static int 481vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 482 int bits) 483{ 484 x86regs_t regs; 485 int i; 486 487 x86bios_init_regs(®s); 488 regs.R_AX = 0x4f09; 489 /* regs.R_BL = 0; */ 490 regs.R_CX = colors; 491 regs.R_DX = start; 492 493 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 494 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 495 496 bits = 8 - bits; 497 mtx_lock(&vesa_lock); 498 for (i = 0; i < colors; ++i) { 499 vesa_palette[i * 4] = b[i] >> bits; 500 vesa_palette[i * 4 + 1] = g[i] >> bits; 501 vesa_palette[i * 4 + 2] = r[i] >> bits; 502 vesa_palette[i * 4 + 3] = 0; 503 } 504 x86bios_intr(®s, 0x10); 505 mtx_unlock(&vesa_lock); 506 507 return (regs.R_AX != 0x004f); 508} 509 510static size_t 511vesa_bios_state_buf_size(int state) 512{ 513 x86regs_t regs; 514 515 x86bios_init_regs(®s); 516 regs.R_AX = 0x4f04; 517 /* regs.R_DL = STATE_SIZE; */ 518 regs.R_CX = state; 519 520 x86bios_intr(®s, 0x10); 521 522 if (regs.R_AX != 0x004f) 523 return (0); 524 525 return (regs.R_BX * 64); 526} 527 528static int 529vesa_bios_save_restore(int code, void *p) 530{ 531 x86regs_t regs; 532 533 if (code != STATE_SAVE && code != STATE_LOAD) 534 return (1); 535 536 x86bios_init_regs(®s); 537 regs.R_AX = 0x4f04; 538 regs.R_DL = code; 539 regs.R_CX = vesa_state; 540 541 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 542 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 543 544 mtx_lock(&vesa_lock); 545 switch (code) { 546 case STATE_SAVE: 547 x86bios_intr(®s, 0x10); 548 if (regs.R_AX == 0x004f) 549 bcopy(vesa_state_buf, p, vesa_state_buf_size); 550 break; 551 case STATE_LOAD: 552 bcopy(p, vesa_state_buf, vesa_state_buf_size); 553 x86bios_intr(®s, 0x10); 554 break; 555 } 556 mtx_unlock(&vesa_lock); 557 558 return (regs.R_AX != 0x004f); 559} 560 561#ifdef MODE_TABLE_BROKEN 562static int 563vesa_bios_get_line_length(void) 564{ 565 x86regs_t regs; 566 567 x86bios_init_regs(®s); 568 regs.R_AX = 0x4f06; 569 regs.R_BL = 1; 570 571 x86bios_intr(®s, 0x10); 572 573 if (regs.R_AX != 0x004f) 574 return (-1); 575 576 return (regs.R_BX); 577} 578#endif 579 580static int 581vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 582{ 583 x86regs_t regs; 584 585 x86bios_init_regs(®s); 586 regs.R_AX = 0x4f06; 587 /* regs.R_BL = 0; */ 588 regs.R_CX = pixel; 589 590 x86bios_intr(®s, 0x10); 591 592#if VESA_DEBUG > 1 593 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 594#endif 595 if (regs.R_AX != 0x004f) 596 return (-1); 597 598 if (bytes != NULL) 599 *bytes = regs.R_BX; 600 if (lines != NULL) 601 *lines = regs.R_DX; 602 603 return (0); 604} 605 606#if 0 607static int 608vesa_bios_get_start(int *x, int *y) 609{ 610 x86regs_t regs; 611 612 x86bios_init_regs(®s); 613 regs.R_AX = 0x4f07; 614 regs.R_BL = 1; 615 616 x86bios_intr(®s, 0x10); 617 618 if (regs.R_AX != 0x004f) 619 return (-1); 620 621 *x = regs.R_CX; 622 *y = regs.R_DX; 623 624 return (0); 625} 626#endif 627 628static int 629vesa_bios_set_start(int x, int y) 630{ 631 x86regs_t regs; 632 633 x86bios_init_regs(®s); 634 regs.R_AX = 0x4f07; 635 regs.R_BL = 0x80; 636 regs.R_CX = x; 637 regs.R_DX = y; 638 639 x86bios_intr(®s, 0x10); 640 641 return (regs.R_AX != 0x004f); 642} 643 644/* map a generic video mode to a known mode */ 645static int 646vesa_map_gen_mode_num(int type, int color, int mode) 647{ 648 static struct { 649 int from; 650 int to; 651 } mode_map[] = { 652 { M_TEXT_132x25, M_VESA_C132x25 }, 653 { M_TEXT_132x43, M_VESA_C132x43 }, 654 { M_TEXT_132x50, M_VESA_C132x50 }, 655 { M_TEXT_132x60, M_VESA_C132x60 }, 656 }; 657 int i; 658 659 for (i = 0; i < nitems(mode_map); ++i) { 660 if (mode_map[i].from == mode) 661 return (mode_map[i].to); 662 } 663 return (mode); 664} 665 666static int 667vesa_translate_flags(u_int16_t vflags) 668{ 669 static struct { 670 u_int16_t mask; 671 int set; 672 int reset; 673 } ftable[] = { 674 { V_MODECOLOR, V_INFO_COLOR, 0 }, 675 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 676 { V_MODELFB, V_INFO_LINEAR, 0 }, 677 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 678 }; 679 int flags; 680 int i; 681 682 for (flags = 0, i = 0; i < nitems(ftable); ++i) { 683 flags |= (vflags & ftable[i].mask) ? 684 ftable[i].set : ftable[i].reset; 685 } 686 return (flags); 687} 688 689static int 690vesa_translate_mmodel(u_int8_t vmodel) 691{ 692 static struct { 693 u_int8_t vmodel; 694 int mmodel; 695 } mtable[] = { 696 { V_MMTEXT, V_INFO_MM_TEXT }, 697 { V_MMCGA, V_INFO_MM_CGA }, 698 { V_MMHGC, V_INFO_MM_HGC }, 699 { V_MMEGA, V_INFO_MM_PLANAR }, 700 { V_MMPACKED, V_INFO_MM_PACKED }, 701 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 702 }; 703 int i; 704 705 for (i = 0; mtable[i].mmodel >= 0; ++i) { 706 if (mtable[i].vmodel == vmodel) 707 return (mtable[i].mmodel); 708 } 709 return (V_INFO_MM_OTHER); 710} 711 712static int 713vesa_get_bpscanline(struct vesa_mode *vmode) 714{ 715 int bpsl; 716 717 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 718 /* Find the minimum length. */ 719 switch (vmode->v_bpp / vmode->v_planes) { 720 case 1: 721 bpsl = vmode->v_width / 8; 722 break; 723 case 2: 724 bpsl = vmode->v_width / 4; 725 break; 726 case 4: 727 bpsl = vmode->v_width / 2; 728 break; 729 default: 730 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 731 bpsl /= vmode->v_planes; 732 break; 733 } 734 735 /* Use VBE 3.0 information if it looks sane. */ 736 if ((vmode->v_modeattr & V_MODELFB) != 0 && 737 vesa_adp_info->v_version >= 0x0300 && 738 vmode->v_linbpscanline > bpsl) 739 return (vmode->v_linbpscanline); 740 741 /* Return the minimum if the mode table looks absurd. */ 742 if (vmode->v_bpscanline < bpsl) 743 return (bpsl); 744 } 745 746 return (vmode->v_bpscanline); 747} 748 749#define VESA_MAXSTR 256 750 751#define VESA_STRCPY(dst, src) do { \ 752 char *str; \ 753 int i; \ 754 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 755 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 756 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 757 dst[i] = str[i]; \ 758 dst[i] = '\0'; \ 759} while (0) 760 761static int 762vesa_bios_init(void) 763{ 764 struct vesa_mode vmode; 765 struct vesa_info *buf; 766 video_info_t *p; 767 x86regs_t regs; 768 size_t bsize; 769 size_t msize; 770 void *vmbuf; 771 uint8_t *vbios; 772 uint32_t offs; 773 uint16_t vers; 774 int is_via_cle266; 775 int modes; 776 int i; 777 778 if (vesa_init_done) 779 return (0); 780 781 vesa_bios_offs = VESA_BIOS_OFFSET; 782 783 /* 784 * If the VBE real mode interrupt vector is not found, try BIOS POST. 785 */ 786 vesa_bios_int10 = x86bios_get_intr(0x10); 787 if (vesa_bios_int10 == 0) { 788 if (vesa_bios_post() != 0) 789 return (1); 790 vesa_bios_int10 = x86bios_get_intr(0x10); 791 if (vesa_bios_int10 == 0) 792 return (1); 793 } 794 795 /* 796 * Shadow video ROM. 797 */ 798 offs = vesa_bios_int10; 799 if (vesa_shadow_rom) { 800 vbios = x86bios_get_orm(vesa_bios_offs); 801 if (vbios != NULL) { 802 vesa_bios_size = vbios[2] * 512; 803 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 804 (vesa_bios_int10 & 0xffff0000) && 805 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 806 vesa_bios = x86bios_alloc(&vesa_bios_offs, 807 vesa_bios_size, M_WAITOK); 808 bcopy(vbios, vesa_bios, vesa_bios_size); 809 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 810 (vesa_bios_int10 & 0xffff); 811 x86bios_set_intr(0x10, offs); 812 } 813 } 814 if (vesa_bios == NULL) 815 printf("VESA: failed to shadow video ROM\n"); 816 } 817 if (bootverbose) 818 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 819 (offs >> 16) & 0xffff, offs & 0xffff); 820 821 x86bios_init_regs(®s); 822 regs.R_AX = 0x4f00; 823 824 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 825 826 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 827 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 828 829 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 830 x86bios_intr(®s, 0x10); 831 832 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 833 goto fail; 834 835 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 836 bcopy(vmbuf, buf, sizeof(*buf)); 837 838 if (bootverbose) { 839 printf("VESA: information block\n"); 840 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 841 } 842 843 vers = buf->v_version = le16toh(buf->v_version); 844 buf->v_oemstr = le32toh(buf->v_oemstr); 845 buf->v_flags = le32toh(buf->v_flags); 846 buf->v_modetable = le32toh(buf->v_modetable); 847 buf->v_memsize = le16toh(buf->v_memsize); 848 buf->v_revision = le16toh(buf->v_revision); 849 buf->v_venderstr = le32toh(buf->v_venderstr); 850 buf->v_prodstr = le32toh(buf->v_prodstr); 851 buf->v_revstr = le32toh(buf->v_revstr); 852 853 if (vers < 0x0102) { 854 printf("VESA: VBE version %d.%d is not supported; " 855 "version 1.2 or later is required.\n", 856 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 857 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 858 goto fail; 859 } 860 861 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 862 if (vers >= 0x0200) { 863 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 864 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 865 VESA_STRCPY(vesa_revstr, buf->v_revstr); 866 } 867 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 868 sizeof(VESA_VIA_CLE266)) == 0; 869 870 if (buf->v_modetable == 0) 871 goto fail; 872 873 msize = (size_t)buf->v_memsize * 64 * 1024; 874 875 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 876 877 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 878 (vesa_vmodetab[i] != 0xffff); ++i) { 879 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 880 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 881 continue; 882 883 vmode.v_modeattr = le16toh(vmode.v_modeattr); 884 vmode.v_wgran = le16toh(vmode.v_wgran); 885 vmode.v_wsize = le16toh(vmode.v_wsize); 886 vmode.v_waseg = le16toh(vmode.v_waseg); 887 vmode.v_wbseg = le16toh(vmode.v_wbseg); 888 vmode.v_posfunc = le32toh(vmode.v_posfunc); 889 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 890 vmode.v_width = le16toh(vmode.v_width); 891 vmode.v_height = le16toh(vmode.v_height); 892 vmode.v_lfb = le32toh(vmode.v_lfb); 893 vmode.v_offscreen = le32toh(vmode.v_offscreen); 894 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 895 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 896 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 897 898 /* reject unsupported modes */ 899#if 0 900 if ((vmode.v_modeattr & 901 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 902 (V_MODESUPP | V_MODEOPTINFO)) 903 continue; 904#else 905 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 906#if VESA_DEBUG > 1 907 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 908 " attr = %x\n", 909 vmode.v_modeattr & V_MODEGRAPHICS ? 910 "graphics" : "text", 911 vmode.v_width, vmode.v_height, vmode.v_bpp, 912 vmode.v_modeattr); 913#endif 914 continue; 915 } 916#endif 917 918 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 919 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 920 bsize *= vmode.v_planes; 921 922 /* Does it have enough memory to support this mode? */ 923 if (msize < bsize) { 924#if VESA_DEBUG > 1 925 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 926 " attr = %x, not enough memory\n", 927 vmode.v_modeattr & V_MODEGRAPHICS ? 928 "graphics" : "text", 929 vmode.v_width, vmode.v_height, vmode.v_bpp, 930 vmode.v_modeattr); 931#endif 932 continue; 933 } 934 if (bsize > vesa_vmem_max) 935 vesa_vmem_max = bsize; 936 937 /* expand the array if necessary */ 938 if (modes >= vesa_vmode_max) { 939 vesa_vmode_max += MODE_TABLE_DELTA; 940 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 941 M_DEVBUF, M_WAITOK); 942#if VESA_DEBUG > 1 943 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 944 modes, vesa_vmode_max); 945#endif 946 if (modes > 0) { 947 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 948 free(vesa_vmode, M_DEVBUF); 949 } 950 vesa_vmode = p; 951 } 952 953#if VESA_DEBUG > 1 954 printf("Found VESA %s mode: %d x %d x %d bpp\n", 955 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 956 vmode.v_width, vmode.v_height, vmode.v_bpp); 957#endif 958 if (is_via_cle266) { 959 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 960 vmode.v_width &= 0xff; 961 vmode.v_waseg = 0xb8000 >> 4; 962 } 963 } 964 965 /* copy some fields */ 966 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 967 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 968 vesa_vmode[modes].vi_width = vmode.v_width; 969 vesa_vmode[modes].vi_height = vmode.v_height; 970 vesa_vmode[modes].vi_depth = vmode.v_bpp; 971 vesa_vmode[modes].vi_planes = vmode.v_planes; 972 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 973 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 974 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 975 /* XXX window B */ 976 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 977 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 978 if (vmode.v_modeattr & V_MODELFB) 979 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 980 vesa_vmode[modes].vi_buffer_size = bsize; 981 vesa_vmode[modes].vi_mem_model = 982 vesa_translate_mmodel(vmode.v_memmodel); 983 switch (vesa_vmode[modes].vi_mem_model) { 984 case V_INFO_MM_DIRECT: 985 if ((vmode.v_modeattr & V_MODELFB) != 0 && 986 vers >= 0x0300) { 987 vesa_vmode[modes].vi_pixel_fields[0] = 988 vmode.v_linredfieldpos; 989 vesa_vmode[modes].vi_pixel_fields[1] = 990 vmode.v_lingreenfieldpos; 991 vesa_vmode[modes].vi_pixel_fields[2] = 992 vmode.v_linbluefieldpos; 993 vesa_vmode[modes].vi_pixel_fields[3] = 994 vmode.v_linresfieldpos; 995 vesa_vmode[modes].vi_pixel_fsizes[0] = 996 vmode.v_linredmasksize; 997 vesa_vmode[modes].vi_pixel_fsizes[1] = 998 vmode.v_lingreenmasksize; 999 vesa_vmode[modes].vi_pixel_fsizes[2] = 1000 vmode.v_linbluemasksize; 1001 vesa_vmode[modes].vi_pixel_fsizes[3] = 1002 vmode.v_linresmasksize; 1003 } else { 1004 vesa_vmode[modes].vi_pixel_fields[0] = 1005 vmode.v_redfieldpos; 1006 vesa_vmode[modes].vi_pixel_fields[1] = 1007 vmode.v_greenfieldpos; 1008 vesa_vmode[modes].vi_pixel_fields[2] = 1009 vmode.v_bluefieldpos; 1010 vesa_vmode[modes].vi_pixel_fields[3] = 1011 vmode.v_resfieldpos; 1012 vesa_vmode[modes].vi_pixel_fsizes[0] = 1013 vmode.v_redmasksize; 1014 vesa_vmode[modes].vi_pixel_fsizes[1] = 1015 vmode.v_greenmasksize; 1016 vesa_vmode[modes].vi_pixel_fsizes[2] = 1017 vmode.v_bluemasksize; 1018 vesa_vmode[modes].vi_pixel_fsizes[3] = 1019 vmode.v_resmasksize; 1020 } 1021 /* FALLTHROUGH */ 1022 case V_INFO_MM_PACKED: 1023 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1024 break; 1025 } 1026 vesa_vmode[modes].vi_flags = 1027 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1028 1029 ++modes; 1030 } 1031 if (vesa_vmode != NULL) 1032 vesa_vmode[modes].vi_mode = EOT; 1033 1034 if (bootverbose) 1035 printf("VESA: %d mode(s) found\n", modes); 1036 1037 if (modes == 0) 1038 goto fail; 1039 1040 x86bios_free(vmbuf, sizeof(*buf)); 1041 1042 /* Probe supported save/restore states. */ 1043 for (i = 0; i < 4; i++) 1044 if (vesa_bios_state_buf_size(1 << i) > 0) 1045 vesa_state |= 1 << i; 1046 if (vesa_state != 0) 1047 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1048 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1049 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1050 if (vesa_state_buf_size > 0) { 1051 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1052 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1053 } 1054 1055 return (0); 1056 1057fail: 1058 x86bios_free(vmbuf, sizeof(buf)); 1059 vesa_bios_uninit(); 1060 return (1); 1061} 1062 1063static void 1064vesa_bios_uninit(void) 1065{ 1066 1067 if (vesa_bios != NULL) { 1068 x86bios_set_intr(0x10, vesa_bios_int10); 1069 vesa_bios_offs = VESA_BIOS_OFFSET; 1070 x86bios_free(vesa_bios, vesa_bios_size); 1071 vesa_bios = NULL; 1072 } 1073 if (vesa_adp_info != NULL) { 1074 free(vesa_adp_info, M_DEVBUF); 1075 vesa_adp_info = NULL; 1076 } 1077 if (vesa_oemstr != NULL) { 1078 free(vesa_oemstr, M_DEVBUF); 1079 vesa_oemstr = NULL; 1080 } 1081 if (vesa_venderstr != NULL) { 1082 free(vesa_venderstr, M_DEVBUF); 1083 vesa_venderstr = NULL; 1084 } 1085 if (vesa_prodstr != NULL) { 1086 free(vesa_prodstr, M_DEVBUF); 1087 vesa_prodstr = NULL; 1088 } 1089 if (vesa_revstr != NULL) { 1090 free(vesa_revstr, M_DEVBUF); 1091 vesa_revstr = NULL; 1092 } 1093 if (vesa_vmode != NULL) { 1094 free(vesa_vmode, M_DEVBUF); 1095 vesa_vmode = NULL; 1096 } 1097 if (vesa_palette != NULL) { 1098 x86bios_free(vesa_palette, 1099 VESA_PALETTE_SIZE + vesa_state_buf_size); 1100 vesa_palette = NULL; 1101 } 1102} 1103 1104static void 1105vesa_clear_modes(video_info_t *info, int color) 1106{ 1107 while (info->vi_mode != EOT) { 1108 if ((info->vi_flags & V_INFO_COLOR) != color) 1109 info->vi_mode = NA; 1110 ++info; 1111 } 1112} 1113 1114/* entry points */ 1115 1116static int 1117vesa_configure(int flags) 1118{ 1119 video_adapter_t *adp; 1120 int adapters; 1121 int error; 1122 int i; 1123 1124 if (vesa_init_done) 1125 return (0); 1126 if (flags & VIO_PROBE_ONLY) 1127 return (0); 1128 1129 /* 1130 * If the VESA module has already been loaded, abort loading 1131 * the module this time. 1132 */ 1133 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1134 if (adp->va_flags & V_ADP_VESA) 1135 return (ENXIO); 1136 if (adp->va_type == KD_VGA) 1137 break; 1138 } 1139 1140 /* 1141 * The VGA adapter is not found. This is because either 1142 * 1) the VGA driver has not been initialized, or 2) the VGA card 1143 * is not present. If 1) is the case, we shall defer 1144 * initialization for now and try again later. 1145 */ 1146 if (adp == NULL) { 1147 vga_sub_configure = vesa_configure; 1148 return (ENODEV); 1149 } 1150 1151 /* count number of registered adapters */ 1152 for (++i; vid_get_adapter(i) != NULL; ++i) 1153 ; 1154 adapters = i; 1155 1156 /* call VESA BIOS */ 1157 vesa_adp = adp; 1158 if (vesa_bios_init()) { 1159 vesa_adp = NULL; 1160 return (ENXIO); 1161 } 1162 vesa_adp->va_flags |= V_ADP_VESA; 1163 1164 /* remove conflicting modes if we have more than one adapter */ 1165 if (adapters > 1) { 1166 vesa_clear_modes(vesa_vmode, 1167 (vesa_adp->va_flags & V_ADP_COLOR) ? 1168 V_INFO_COLOR : 0); 1169 } 1170 1171 if ((error = vesa_load_ioctl()) == 0) { 1172 prevvidsw = vidsw[vesa_adp->va_index]; 1173 vidsw[vesa_adp->va_index] = &vesavidsw; 1174 vesa_init_done = TRUE; 1175 } else { 1176 vesa_adp = NULL; 1177 return (error); 1178 } 1179 1180 return (0); 1181} 1182 1183#if 0 1184static int 1185vesa_nop(void) 1186{ 1187 1188 return (0); 1189} 1190#endif 1191 1192static int 1193vesa_error(void) 1194{ 1195 1196 return (1); 1197} 1198 1199static int 1200vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1201{ 1202 1203 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1204} 1205 1206static int 1207vesa_init(int unit, video_adapter_t *adp, int flags) 1208{ 1209 1210 return ((*prevvidsw->init)(unit, adp, flags)); 1211} 1212 1213static int 1214vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1215{ 1216 int i; 1217 1218 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1219 return (0); 1220 1221 if (adp != vesa_adp) 1222 return (1); 1223 1224 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1225 vesa_adp->va_flags & V_ADP_COLOR, mode); 1226 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1227 if (vesa_vmode[i].vi_mode == NA) 1228 continue; 1229 if (vesa_vmode[i].vi_mode == mode) { 1230 *info = vesa_vmode[i]; 1231 return (0); 1232 } 1233 } 1234 return (1); 1235} 1236 1237static int 1238vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1239{ 1240 int i; 1241 1242 if ((*prevvidsw->query_mode)(adp, info) == 0) 1243 return (0); 1244 if (adp != vesa_adp) 1245 return (ENODEV); 1246 1247 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1248 if ((info->vi_width != 0) 1249 && (info->vi_width != vesa_vmode[i].vi_width)) 1250 continue; 1251 if ((info->vi_height != 0) 1252 && (info->vi_height != vesa_vmode[i].vi_height)) 1253 continue; 1254 if ((info->vi_cwidth != 0) 1255 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1256 continue; 1257 if ((info->vi_cheight != 0) 1258 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1259 continue; 1260 if ((info->vi_depth != 0) 1261 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1262 continue; 1263 if ((info->vi_planes != 0) 1264 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1265 continue; 1266 /* pixel format, memory model */ 1267 if ((info->vi_flags != 0) 1268 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1269 continue; 1270 *info = vesa_vmode[i]; 1271 return (0); 1272 } 1273 return (ENODEV); 1274} 1275 1276static int 1277vesa_set_mode(video_adapter_t *adp, int mode) 1278{ 1279 video_info_t info; 1280 1281 if (adp != vesa_adp) 1282 return ((*prevvidsw->set_mode)(adp, mode)); 1283 1284 mode = vesa_map_gen_mode_num(adp->va_type, 1285 adp->va_flags & V_ADP_COLOR, mode); 1286#if VESA_DEBUG > 0 1287 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1288 adp->va_mode, adp->va_mode, mode, mode); 1289#endif 1290 /* 1291 * If the current mode is a VESA mode and the new mode is not, 1292 * restore the state of the adapter first by setting one of the 1293 * standard VGA mode, so that non-standard, extended SVGA registers 1294 * are set to the state compatible with the standard VGA modes. 1295 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1296 * the new mode correctly. 1297 */ 1298 if (VESA_MODE(adp->va_mode)) { 1299 if (!VESA_MODE(mode) && 1300 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1301 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1302 vesa_bios_set_dac(6); 1303 adp->va_flags &= ~V_ADP_DAC8; 1304 } 1305 int10_set_mode(adp->va_initial_bios_mode); 1306 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1307 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1308 /* 1309 * Once (*prevvidsw->get_info)() succeeded, 1310 * (*prevvidsw->set_mode)() below won't fail... 1311 */ 1312 } 1313 } 1314 1315 /* we may not need to handle this mode after all... */ 1316 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1317 return (0); 1318 1319 /* is the new mode supported? */ 1320 if (vesa_get_info(adp, mode, &info)) 1321 return (1); 1322 /* assert(VESA_MODE(mode)); */ 1323 1324#if VESA_DEBUG > 0 1325 printf("VESA: about to set a VESA mode...\n"); 1326#endif 1327 /* don't use the linear frame buffer for text modes. XXX */ 1328 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1329 info.vi_flags &= ~V_INFO_LINEAR; 1330 1331 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1332 mode |= 0x4000; 1333 if (vesa_bios_set_mode(mode | 0x8000)) 1334 return (1); 1335 1336 /* Palette format is reset by the above VBE function call. */ 1337 adp->va_flags &= ~V_ADP_DAC8; 1338 1339 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1340 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1341 vesa_bios_set_dac(8) > 6) 1342 adp->va_flags |= V_ADP_DAC8; 1343 1344 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1345 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1346 1347#if VESA_DEBUG > 0 1348 printf("VESA: mode set!\n"); 1349#endif 1350 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1351 vesa_adp->va_flags &= ~V_ADP_COLOR; 1352 vesa_adp->va_flags |= 1353 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1354 vesa_adp->va_crtc_addr = 1355 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1356 1357 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1358 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1359 vesa_adp->va_line_width /= info.vi_planes; 1360 1361#ifdef MODE_TABLE_BROKEN 1362 /* If VBE function returns bigger bytes per scan line, use it. */ 1363 { 1364 int bpsl = vesa_bios_get_line_length(); 1365 if (bpsl > vesa_adp->va_line_width) { 1366 vesa_adp->va_line_width = bpsl; 1367 info.vi_buffer_size = bpsl * info.vi_height; 1368 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1369 info.vi_buffer_size *= info.vi_planes; 1370 } 1371 } 1372#endif 1373 1374 if (info.vi_flags & V_INFO_LINEAR) { 1375#if VESA_DEBUG > 1 1376 printf("VESA: setting up LFB\n"); 1377#endif 1378 vesa_adp->va_buffer = 1379 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1380 vesa_vmem_max, PAT_WRITE_COMBINING); 1381 vesa_adp->va_window = vesa_adp->va_buffer; 1382 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1383 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1384 } else { 1385 vesa_adp->va_buffer = 0; 1386 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1387 vesa_adp->va_window_size = info.vi_window_size; 1388 vesa_adp->va_window_gran = info.vi_window_gran; 1389 } 1390 vesa_adp->va_buffer_size = info.vi_buffer_size; 1391 vesa_adp->va_window_orig = 0; 1392 vesa_adp->va_disp_start.x = 0; 1393 vesa_adp->va_disp_start.y = 0; 1394#if VESA_DEBUG > 0 1395 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1396 info.vi_width, vesa_adp->va_line_width); 1397#endif 1398 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1399 1400 /* move hardware cursor out of the way */ 1401 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1402 1403 return (0); 1404} 1405 1406static int 1407vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1408 u_char *data, int ch, int count) 1409{ 1410 1411 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1412 ch, count)); 1413} 1414 1415static int 1416vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1417 u_char *data, int ch, int count) 1418{ 1419 1420 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1421 ch, count)); 1422} 1423 1424static int 1425vesa_show_font(video_adapter_t *adp, int page) 1426{ 1427 1428 return ((*prevvidsw->show_font)(adp, page)); 1429} 1430 1431static int 1432vesa_save_palette(video_adapter_t *adp, u_char *palette) 1433{ 1434 int bits; 1435 1436 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1437 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1438 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1439 return (0); 1440 } 1441 1442 return ((*prevvidsw->save_palette)(adp, palette)); 1443} 1444 1445static int 1446vesa_load_palette(video_adapter_t *adp, u_char *palette) 1447{ 1448 int bits; 1449 1450 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1451 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1452 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1453 return (0); 1454 } 1455 1456 return ((*prevvidsw->load_palette)(adp, palette)); 1457} 1458 1459static int 1460vesa_set_border(video_adapter_t *adp, int color) 1461{ 1462 1463 return ((*prevvidsw->set_border)(adp, color)); 1464} 1465 1466static int 1467vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1468{ 1469 void *buf; 1470 size_t bsize; 1471 1472 if (adp != vesa_adp || (size == 0 && vesa_state_buf_size == 0)) 1473 return ((*prevvidsw->save_state)(adp, p, size)); 1474 1475 bsize = offsetof(adp_state_t, regs) + vesa_state_buf_size; 1476 if (size == 0) 1477 return (bsize); 1478 if (vesa_state_buf_size > 0 && size < bsize) 1479 return (EINVAL); 1480 1481 if (vesa_vmem_buf != NULL) { 1482 free(vesa_vmem_buf, M_DEVBUF); 1483 vesa_vmem_buf = NULL; 1484 } 1485 if (VESA_MODE(adp->va_mode)) { 1486 buf = (void *)adp->va_buffer; 1487 if (buf != NULL) { 1488 bsize = adp->va_buffer_size; 1489 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT); 1490 if (vesa_vmem_buf != NULL) 1491 bcopy(buf, vesa_vmem_buf, bsize); 1492 } 1493 } 1494 if (vesa_state_buf_size == 0) 1495 return ((*prevvidsw->save_state)(adp, p, size)); 1496 ((adp_state_t *)p)->sig = V_STATE_SIG; 1497 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1498} 1499 1500static int 1501vesa_load_state(video_adapter_t *adp, void *p) 1502{ 1503 void *buf; 1504 size_t bsize; 1505 int error, mode; 1506 1507 if (adp != vesa_adp) 1508 return ((*prevvidsw->load_state)(adp, p)); 1509 1510 /* Try BIOS POST to restore a sane state. */ 1511 (void)vesa_bios_post(); 1512 bsize = adp->va_buffer_size; 1513 mode = adp->va_mode; 1514 error = vesa_set_mode(adp, adp->va_initial_mode); 1515 if (mode != adp->va_initial_mode) 1516 error = vesa_set_mode(adp, mode); 1517 1518 if (vesa_vmem_buf != NULL) { 1519 if (error == 0 && VESA_MODE(mode)) { 1520 buf = (void *)adp->va_buffer; 1521 if (buf != NULL) 1522 bcopy(vesa_vmem_buf, buf, bsize); 1523 } 1524 free(vesa_vmem_buf, M_DEVBUF); 1525 vesa_vmem_buf = NULL; 1526 } 1527 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1528 return ((*prevvidsw->load_state)(adp, p)); 1529 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1530} 1531 1532#if 0 1533static int 1534vesa_get_origin(video_adapter_t *adp, off_t *offset) 1535{ 1536 x86regs_t regs; 1537 1538 x86bios_init_regs(®s); 1539 regs.R_AX = 0x4f05; 1540 regs.R_BL = 0x10; 1541 1542 x86bios_intr(®s, 0x10); 1543 1544 if (regs.R_AX != 0x004f) 1545 return (1); 1546 *offset = regs.DX * adp->va_window_gran; 1547 1548 return (0); 1549} 1550#endif 1551 1552static int 1553vesa_set_origin(video_adapter_t *adp, off_t offset) 1554{ 1555 x86regs_t regs; 1556 1557 /* 1558 * This function should return as quickly as possible to 1559 * maintain good performance of the system. For this reason, 1560 * error checking is kept minimal and let the VESA BIOS to 1561 * detect error. 1562 */ 1563 if (adp != vesa_adp) 1564 return ((*prevvidsw->set_win_org)(adp, offset)); 1565 1566 /* if this is a linear frame buffer, do nothing */ 1567 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1568 return (0); 1569 /* XXX */ 1570 if (adp->va_window_gran == 0) 1571 return (1); 1572 1573 x86bios_init_regs(®s); 1574 regs.R_AX = 0x4f05; 1575 regs.R_DX = offset / adp->va_window_gran; 1576 1577 x86bios_intr(®s, 0x10); 1578 1579 if (regs.R_AX != 0x004f) 1580 return (1); 1581 1582 x86bios_init_regs(®s); 1583 regs.R_AX = 0x4f05; 1584 regs.R_BL = 1; 1585 regs.R_DX = offset / adp->va_window_gran; 1586 x86bios_intr(®s, 0x10); 1587 1588 adp->va_window_orig = rounddown(offset, adp->va_window_gran); 1589 return (0); /* XXX */ 1590} 1591 1592static int 1593vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1594{ 1595 1596 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1597} 1598 1599static int 1600vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1601{ 1602 1603 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1604} 1605 1606static int 1607vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1608 int celsize, int blink) 1609{ 1610 1611 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1612 blink)); 1613} 1614 1615static int 1616vesa_blank_display(video_adapter_t *adp, int mode) 1617{ 1618 1619 /* XXX: use VESA DPMS */ 1620 return ((*prevvidsw->blank_display)(adp, mode)); 1621} 1622 1623static int 1624vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1625 int prot, vm_memattr_t *memattr) 1626{ 1627 1628#if VESA_DEBUG > 0 1629 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1630 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1631#endif 1632 1633 if ((adp == vesa_adp) && 1634 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1635 /* va_window_size == va_buffer_size/vi_planes */ 1636 /* XXX: is this correct? */ 1637 if (offset > adp->va_window_size - PAGE_SIZE) 1638 return (-1); 1639 *paddr = adp->va_info.vi_buffer + offset; 1640#ifdef VM_MEMATTR_WRITE_COMBINING 1641 *memattr = VM_MEMATTR_WRITE_COMBINING; 1642#endif 1643 return (0); 1644 } 1645 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1646} 1647 1648static int 1649vesa_clear(video_adapter_t *adp) 1650{ 1651 1652 return ((*prevvidsw->clear)(adp)); 1653} 1654 1655static int 1656vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1657{ 1658 1659 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1660} 1661 1662static int 1663vesa_bitblt(video_adapter_t *adp,...) 1664{ 1665 1666 /* FIXME */ 1667 return (1); 1668} 1669 1670static int 1671get_palette(video_adapter_t *adp, int base, int count, 1672 u_char *red, u_char *green, u_char *blue, u_char *trans) 1673{ 1674 u_char *r; 1675 u_char *g; 1676 u_char *b; 1677 int bits; 1678 int error; 1679 1680 if (base < 0 || base >= 256 || count < 0 || count > 256) 1681 return (1); 1682 if ((base + count) > 256) 1683 return (1); 1684 if (!VESA_MODE(adp->va_mode)) 1685 return (1); 1686 1687 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1688 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1689 g = r + count; 1690 b = g + count; 1691 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1692 if (error == 0) { 1693 copyout(r, red, count); 1694 copyout(g, green, count); 1695 copyout(b, blue, count); 1696 if (trans != NULL) { 1697 bzero(r, count); 1698 copyout(r, trans, count); 1699 } 1700 } 1701 free(r, M_DEVBUF); 1702 1703 return (error); 1704} 1705 1706static int 1707set_palette(video_adapter_t *adp, int base, int count, 1708 u_char *red, u_char *green, u_char *blue, u_char *trans) 1709{ 1710 u_char *r; 1711 u_char *g; 1712 u_char *b; 1713 int bits; 1714 int error; 1715 1716 if (base < 0 || base >= 256 || count < 0 || count > 256) 1717 return (1); 1718 if ((base + count) > 256) 1719 return (1); 1720 if (!VESA_MODE(adp->va_mode)) 1721 return (1); 1722 1723 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1724 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1725 g = r + count; 1726 b = g + count; 1727 copyin(red, r, count); 1728 copyin(green, g, count); 1729 copyin(blue, b, count); 1730 1731 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1732 free(r, M_DEVBUF); 1733 1734 return (error); 1735} 1736 1737static int 1738vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1739{ 1740 int bytes; 1741 1742 if (adp != vesa_adp) 1743 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1744 1745 switch (cmd) { 1746 case FBIO_SETWINORG: /* set frame buffer window origin */ 1747 if (!VESA_MODE(adp->va_mode)) 1748 return (*prevvidsw->ioctl)(adp, cmd, arg); 1749 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1750 1751 case FBIO_SETDISPSTART: /* set display start address */ 1752 if (!VESA_MODE(adp->va_mode)) 1753 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1754 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1755 ((video_display_start_t *)arg)->y)) 1756 return (ENODEV); 1757 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1758 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1759 return (0); 1760 1761 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1762 if (!VESA_MODE(adp->va_mode)) 1763 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1764 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1765 return (ENODEV); 1766 adp->va_line_width = bytes; 1767#if VESA_DEBUG > 1 1768 printf("new line width:%d\n", adp->va_line_width); 1769#endif 1770 return (0); 1771 1772 case FBIO_GETPALETTE: /* get color palette */ 1773 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1774 ((video_color_palette_t *)arg)->count, 1775 ((video_color_palette_t *)arg)->red, 1776 ((video_color_palette_t *)arg)->green, 1777 ((video_color_palette_t *)arg)->blue, 1778 ((video_color_palette_t *)arg)->transparent)) 1779 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1780 return (0); 1781 1782 1783 case FBIO_SETPALETTE: /* set color palette */ 1784 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1785 ((video_color_palette_t *)arg)->count, 1786 ((video_color_palette_t *)arg)->red, 1787 ((video_color_palette_t *)arg)->green, 1788 ((video_color_palette_t *)arg)->blue, 1789 ((video_color_palette_t *)arg)->transparent)) 1790 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1791 return (0); 1792 1793 case FBIOGETCMAP: /* get color palette */ 1794 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1795 ((struct fbcmap *)arg)->count, 1796 ((struct fbcmap *)arg)->red, 1797 ((struct fbcmap *)arg)->green, 1798 ((struct fbcmap *)arg)->blue, NULL)) 1799 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1800 return (0); 1801 1802 case FBIOPUTCMAP: /* set color palette */ 1803 if (set_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 default: 1812 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1813 } 1814} 1815 1816static int 1817vesa_diag(video_adapter_t *adp, int level) 1818{ 1819 int error; 1820 1821 /* call the previous handler first */ 1822 error = (*prevvidsw->diag)(adp, level); 1823 if (error) 1824 return (error); 1825 1826 if (adp != vesa_adp) 1827 return (1); 1828 1829 if (level <= 0) 1830 return (0); 1831 1832 return (0); 1833} 1834 1835static int 1836vesa_bios_info(int level) 1837{ 1838#if VESA_DEBUG > 1 1839 struct vesa_mode vmode; 1840 int i; 1841#endif 1842 uint16_t vers; 1843 1844 vers = vesa_adp_info->v_version; 1845 1846 if (bootverbose) { 1847 /* general adapter information */ 1848 printf( 1849 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1850 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1851 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1852 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1853 vesa_vmodetab, vesa_adp_info->v_modetable); 1854 1855 /* OEM string */ 1856 if (vesa_oemstr != NULL) 1857 printf("VESA: %s\n", vesa_oemstr); 1858 } 1859 1860 if (level <= 0) 1861 return (0); 1862 1863 if (vers >= 0x0200 && bootverbose) { 1864 /* vender name, product name, product revision */ 1865 printf("VESA: %s %s %s\n", 1866 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1867 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1868 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1869 } 1870 1871#if VESA_DEBUG > 1 1872 /* mode information */ 1873 for (i = 0; 1874 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1875 && (vesa_vmodetab[i] != 0xffff); ++i) { 1876 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1877 continue; 1878 1879 /* print something for diagnostic purpose */ 1880 printf("VESA: mode:0x%03x, flags:0x%04x", 1881 vesa_vmodetab[i], vmode.v_modeattr); 1882 if (vmode.v_modeattr & V_MODEOPTINFO) { 1883 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1884 printf(", G %dx%dx%d %d, ", 1885 vmode.v_width, vmode.v_height, 1886 vmode.v_bpp, vmode.v_planes); 1887 } else { 1888 printf(", T %dx%d, ", 1889 vmode.v_width, vmode.v_height); 1890 } 1891 printf("font:%dx%d, ", 1892 vmode.v_cwidth, vmode.v_cheight); 1893 printf("pages:%d, mem:%d", 1894 vmode.v_ipages + 1, vmode.v_memmodel); 1895 } 1896 if (vmode.v_modeattr & V_MODELFB) { 1897 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1898 vmode.v_lfb, vmode.v_offscreen, 1899 vmode.v_offscreensize*1024); 1900 } 1901 printf("\n"); 1902 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1903 vmode.v_waseg, vmode.v_waattr, 1904 vmode.v_wbseg, vmode.v_wbattr); 1905 printf("size:%dk, gran:%dk\n", 1906 vmode.v_wsize, vmode.v_wgran); 1907 } 1908#endif /* VESA_DEBUG > 1 */ 1909 1910 return (0); 1911} 1912 1913/* module loading */ 1914 1915static int 1916vesa_load(void) 1917{ 1918 int error; 1919 1920 if (vesa_init_done) 1921 return (0); 1922 1923 /* locate a VGA adapter */ 1924 vesa_adp = NULL; 1925 error = vesa_configure(0); 1926 1927 if (error == 0) 1928 vesa_bios_info(bootverbose); 1929 1930 return (error); 1931} 1932 1933static int 1934vesa_unload(void) 1935{ 1936 u_char palette[256*3]; 1937 int error; 1938 1939 /* if the adapter is currently in a VESA mode, don't unload */ 1940 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1941 return (EBUSY); 1942 /* 1943 * FIXME: if there is at least one vty which is in a VESA mode, 1944 * we shouldn't be unloading! XXX 1945 */ 1946 1947 if ((error = vesa_unload_ioctl()) == 0) { 1948 if (vesa_adp != NULL) { 1949 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1950 vesa_bios_save_palette(0, 256, palette, 8); 1951 vesa_bios_set_dac(6); 1952 vesa_adp->va_flags &= ~V_ADP_DAC8; 1953 vesa_bios_load_palette(0, 256, palette, 6); 1954 } 1955 vesa_adp->va_flags &= ~V_ADP_VESA; 1956 vidsw[vesa_adp->va_index] = prevvidsw; 1957 } 1958 } 1959 1960 vesa_bios_uninit(); 1961 1962 return (error); 1963} 1964 1965static int 1966vesa_mod_event(module_t mod, int type, void *data) 1967{ 1968 1969 switch (type) { 1970 case MOD_LOAD: 1971 return (vesa_load()); 1972 case MOD_UNLOAD: 1973 return (vesa_unload()); 1974 } 1975 return (EOPNOTSUPP); 1976} 1977 1978static moduledata_t vesa_mod = { 1979 "vesa", 1980 vesa_mod_event, 1981 NULL, 1982}; 1983 1984DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1985MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1986 1987#endif /* VGA_NO_MODE_CHANGE */ 1988