vesa.c revision 210994
1/*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * Copyright (c) 2009-2010 Jung-uk Kim <jkim@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer as 11 * the first lines of this file unmodified. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: head/sys/dev/fb/vesa.c 210994 2010-08-07 05:46:04Z jkim $"); 30 31#include "opt_vga.h" 32#include "opt_vesa.h" 33 34#ifndef VGA_NO_MODE_CHANGE 35 36#include <sys/param.h> 37#include <sys/bus.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/lock.h> 41#include <sys/module.h> 42#include <sys/malloc.h> 43#include <sys/mutex.h> 44#include <sys/fbio.h> 45 46#include <vm/vm.h> 47#include <vm/vm_extern.h> 48#include <vm/vm_kern.h> 49#include <vm/vm_param.h> 50#include <vm/pmap.h> 51 52#include <machine/pc/bios.h> 53#include <dev/fb/vesa.h> 54 55#include <dev/fb/fbreg.h> 56#include <dev/fb/vgareg.h> 57 58#include <dev/pci/pcivar.h> 59 60#include <isa/isareg.h> 61 62#include <compat/x86bios/x86bios.h> 63 64#define VESA_VIA_CLE266 "VIA CLE266\r\n" 65 66#ifndef VESA_DEBUG 67#define VESA_DEBUG 0 68#endif 69 70/* VESA video adapter state buffer stub */ 71struct adp_state { 72 int sig; 73#define V_STATE_SIG 0x61736576 74 u_char regs[1]; 75}; 76typedef struct adp_state adp_state_t; 77 78static struct mtx vesa_lock; 79 80static void *vesa_state_buf = NULL; 81static uint32_t vesa_state_buf_offs = 0; 82static ssize_t vesa_state_buf_size = 0; 83 84static u_char *vesa_palette = NULL; 85static uint32_t vesa_palette_offs = 0; 86#define VESA_PALETTE_SIZE (256 * 4) 87 88/* VESA video adapter */ 89static video_adapter_t *vesa_adp = NULL; 90 91/* VESA functions */ 92#if 0 93static int vesa_nop(void); 94#endif 95static int vesa_error(void); 96static vi_probe_t vesa_probe; 97static vi_init_t vesa_init; 98static vi_get_info_t vesa_get_info; 99static vi_query_mode_t vesa_query_mode; 100static vi_set_mode_t vesa_set_mode; 101static vi_save_font_t vesa_save_font; 102static vi_load_font_t vesa_load_font; 103static vi_show_font_t vesa_show_font; 104static vi_save_palette_t vesa_save_palette; 105static vi_load_palette_t vesa_load_palette; 106static vi_set_border_t vesa_set_border; 107static vi_save_state_t vesa_save_state; 108static vi_load_state_t vesa_load_state; 109static vi_set_win_org_t vesa_set_origin; 110static vi_read_hw_cursor_t vesa_read_hw_cursor; 111static vi_set_hw_cursor_t vesa_set_hw_cursor; 112static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 113static vi_blank_display_t vesa_blank_display; 114static vi_mmap_t vesa_mmap; 115static vi_ioctl_t vesa_ioctl; 116static vi_clear_t vesa_clear; 117static vi_fill_rect_t vesa_fill_rect; 118static vi_bitblt_t vesa_bitblt; 119static vi_diag_t vesa_diag; 120static int vesa_bios_info(int level); 121 122static video_switch_t vesavidsw = { 123 vesa_probe, 124 vesa_init, 125 vesa_get_info, 126 vesa_query_mode, 127 vesa_set_mode, 128 vesa_save_font, 129 vesa_load_font, 130 vesa_show_font, 131 vesa_save_palette, 132 vesa_load_palette, 133 vesa_set_border, 134 vesa_save_state, 135 vesa_load_state, 136 vesa_set_origin, 137 vesa_read_hw_cursor, 138 vesa_set_hw_cursor, 139 vesa_set_hw_cursor_shape, 140 vesa_blank_display, 141 vesa_mmap, 142 vesa_ioctl, 143 vesa_clear, 144 vesa_fill_rect, 145 vesa_bitblt, 146 vesa_error, 147 vesa_error, 148 vesa_diag, 149}; 150 151static video_switch_t *prevvidsw; 152 153/* VESA BIOS video modes */ 154#define VESA_MAXMODES 64 155#define EOT (-1) 156#define NA (-2) 157 158#define MODE_TABLE_DELTA 8 159 160static int vesa_vmode_max = 0; 161static video_info_t vesa_vmode_empty = { EOT }; 162static video_info_t *vesa_vmode = &vesa_vmode_empty; 163 164static int vesa_init_done = FALSE; 165static int has_vesa_bios = FALSE; 166static struct vesa_info *vesa_adp_info = NULL; 167static u_int16_t *vesa_vmodetab = NULL; 168static char *vesa_oemstr = NULL; 169static char *vesa_venderstr = NULL; 170static char *vesa_prodstr = NULL; 171static char *vesa_revstr = NULL; 172 173/* local macros and functions */ 174#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 175 176static int int10_set_mode(int mode); 177static int vesa_bios_post(void); 178static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 179static int vesa_bios_set_mode(int mode); 180#if 0 181static int vesa_bios_get_dac(void); 182#endif 183static int vesa_bios_set_dac(int bits); 184static int vesa_bios_save_palette(int start, int colors, u_char *palette, 185 int bits); 186static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 187 u_char *b, int bits); 188static int vesa_bios_load_palette(int start, int colors, u_char *palette, 189 int bits); 190static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 191 u_char *b, int bits); 192#define STATE_SIZE 0 193#define STATE_SAVE 1 194#define STATE_LOAD 2 195#define STATE_HW (1<<0) 196#define STATE_DATA (1<<1) 197#define STATE_DAC (1<<2) 198#define STATE_REG (1<<3) 199#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 200#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 201static ssize_t vesa_bios_state_buf_size(void); 202static int vesa_bios_save_restore(int code, void *p); 203#ifdef MODE_TABLE_BROKEN 204static int vesa_bios_get_line_length(void); 205#endif 206static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 207#if 0 208static int vesa_bios_get_start(int *x, int *y); 209#endif 210static int vesa_bios_set_start(int x, int y); 211static int vesa_map_gen_mode_num(int type, int color, int mode); 212static int vesa_translate_flags(u_int16_t vflags); 213static int vesa_translate_mmodel(u_int8_t vmodel); 214static int vesa_get_bpscanline(struct vesa_mode *vmode); 215static int vesa_bios_init(void); 216static void vesa_clear_modes(video_info_t *info, int color); 217 218#if 0 219static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 220#endif 221 222/* INT 10 BIOS calls */ 223static int 224int10_set_mode(int mode) 225{ 226 x86regs_t regs; 227 228 x86bios_init_regs(®s); 229 regs.R_AL = mode; 230 231 x86bios_intr(®s, 0x10); 232 233 return (0); 234} 235 236static int 237vesa_bios_post(void) 238{ 239 x86regs_t regs; 240 devclass_t dc; 241 device_t *devs; 242 device_t dev; 243 int count, i, is_pci; 244 245 if (x86bios_get_orm(0xc0000) == NULL) 246 return (1); 247 248 dev = NULL; 249 is_pci = 0; 250 251 /* Find the matching PCI video controller. */ 252 dc = devclass_find("vgapci"); 253 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 254 for (i = 0; i < count; i++) 255 if (device_get_flags(devs[i]) != 0 && 256 x86bios_match_device(0xc0000, devs[i])) { 257 dev = devs[i]; 258 is_pci = 1; 259 break; 260 } 261 free(devs, M_TEMP); 262 } 263 264 /* Try VGA if a PCI device is not found. */ 265 if (dev == NULL) { 266 dc = devclass_find(VGA_DRIVER_NAME); 267 if (dc != NULL) 268 dev = devclass_get_device(dc, 0); 269 } 270 271 if (bootverbose) 272 printf("%s: calling BIOS POST\n", 273 dev == NULL ? "VESA" : device_get_nameunit(dev)); 274 275 x86bios_init_regs(®s); 276 if (is_pci) { 277 regs.R_AH = pci_get_bus(dev); 278 regs.R_AL = (pci_get_slot(dev) << 3) | 279 (pci_get_function(dev) & 0x07); 280 } 281 regs.R_DL = 0x80; 282 x86bios_call(®s, 0xc000, 0x0003); 283 284 if (x86bios_get_intr(0x10) == 0) 285 return (1); 286 287 return (0); 288} 289 290/* VESA BIOS calls */ 291static int 292vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 293{ 294 x86regs_t regs; 295 uint32_t offs; 296 void *buf; 297 298 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 299 if (buf == NULL) 300 return (1); 301 302 x86bios_init_regs(®s); 303 regs.R_AX = 0x4f01; 304 regs.R_CX = mode; 305 306 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 307 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 308 309 x86bios_intr(®s, 0x10); 310 311 if (regs.R_AX != 0x004f) { 312 x86bios_free(buf, sizeof(*vmode)); 313 return (1); 314 } 315 316 bcopy(buf, vmode, sizeof(*vmode)); 317 x86bios_free(buf, sizeof(*vmode)); 318 319 return (0); 320} 321 322static int 323vesa_bios_set_mode(int mode) 324{ 325 x86regs_t regs; 326 327 x86bios_init_regs(®s); 328 regs.R_AX = 0x4f02; 329 regs.R_BX = mode; 330 331 x86bios_intr(®s, 0x10); 332 333 return (regs.R_AX != 0x004f); 334} 335 336#if 0 337static int 338vesa_bios_get_dac(void) 339{ 340 x86regs_t regs; 341 342 x86bios_init_regs(®s); 343 regs.R_AX = 0x4f08; 344 regs.R_BL = 1; 345 346 x86bios_intr(®s, 0x10); 347 348 if (regs.R_AX != 0x004f) 349 return (6); 350 351 return (regs.R_BH); 352} 353#endif 354 355static int 356vesa_bios_set_dac(int bits) 357{ 358 x86regs_t regs; 359 360 x86bios_init_regs(®s); 361 regs.R_AX = 0x4f08; 362 /* regs.R_BL = 0; */ 363 regs.R_BH = bits; 364 365 x86bios_intr(®s, 0x10); 366 367 if (regs.R_AX != 0x004f) 368 return (6); 369 370 return (regs.R_BH); 371} 372 373static int 374vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 375{ 376 x86regs_t regs; 377 int i; 378 379 x86bios_init_regs(®s); 380 regs.R_AX = 0x4f09; 381 regs.R_BL = 1; 382 regs.R_CX = colors; 383 regs.R_DX = start; 384 385 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 386 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 387 388 bits = 8 - bits; 389 mtx_lock(&vesa_lock); 390 x86bios_intr(®s, 0x10); 391 if (regs.R_AX != 0x004f) { 392 mtx_unlock(&vesa_lock); 393 return (1); 394 } 395 for (i = 0; i < colors; ++i) { 396 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 397 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 398 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 399 } 400 mtx_unlock(&vesa_lock); 401 402 return (0); 403} 404 405static int 406vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 407 int bits) 408{ 409 x86regs_t regs; 410 int i; 411 412 x86bios_init_regs(®s); 413 regs.R_AX = 0x4f09; 414 regs.R_BL = 1; 415 regs.R_CX = colors; 416 regs.R_DX = start; 417 418 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 419 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 420 421 bits = 8 - bits; 422 mtx_lock(&vesa_lock); 423 x86bios_intr(®s, 0x10); 424 if (regs.R_AX != 0x004f) { 425 mtx_unlock(&vesa_lock); 426 return (1); 427 } 428 for (i = 0; i < colors; ++i) { 429 r[i] = vesa_palette[i * 4 + 2] << bits; 430 g[i] = vesa_palette[i * 4 + 1] << bits; 431 b[i] = vesa_palette[i * 4] << bits; 432 } 433 mtx_unlock(&vesa_lock); 434 435 return (0); 436} 437 438static int 439vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 440{ 441 x86regs_t regs; 442 int i; 443 444 x86bios_init_regs(®s); 445 regs.R_AX = 0x4f09; 446 /* regs.R_BL = 0; */ 447 regs.R_CX = colors; 448 regs.R_DX = start; 449 450 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 451 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 452 453 bits = 8 - bits; 454 mtx_lock(&vesa_lock); 455 for (i = 0; i < colors; ++i) { 456 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 457 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 458 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 459 vesa_palette[i * 4 + 3] = 0; 460 } 461 x86bios_intr(®s, 0x10); 462 mtx_unlock(&vesa_lock); 463 464 return (regs.R_AX != 0x004f); 465} 466 467static int 468vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 469 int bits) 470{ 471 x86regs_t regs; 472 int i; 473 474 x86bios_init_regs(®s); 475 regs.R_AX = 0x4f09; 476 /* regs.R_BL = 0; */ 477 regs.R_CX = colors; 478 regs.R_DX = start; 479 480 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 481 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 482 483 bits = 8 - bits; 484 mtx_lock(&vesa_lock); 485 for (i = 0; i < colors; ++i) { 486 vesa_palette[i * 4] = b[i] >> bits; 487 vesa_palette[i * 4 + 1] = g[i] >> bits; 488 vesa_palette[i * 4 + 2] = r[i] >> bits; 489 vesa_palette[i * 4 + 3] = 0; 490 } 491 x86bios_intr(®s, 0x10); 492 mtx_unlock(&vesa_lock); 493 494 return (regs.R_AX != 0x004f); 495} 496 497static ssize_t 498vesa_bios_state_buf_size(void) 499{ 500 x86regs_t regs; 501 502 x86bios_init_regs(®s); 503 regs.R_AX = 0x4f04; 504 /* regs.R_DL = STATE_SIZE; */ 505 regs.R_CX = STATE_MOST; 506 507 x86bios_intr(®s, 0x10); 508 509 if (regs.R_AX != 0x004f) 510 return (0); 511 512 return (regs.R_BX * 64); 513} 514 515static int 516vesa_bios_save_restore(int code, void *p) 517{ 518 x86regs_t regs; 519 520 if (code != STATE_SAVE && code != STATE_LOAD) 521 return (1); 522 523 x86bios_init_regs(®s); 524 regs.R_AX = 0x4f04; 525 regs.R_DL = code; 526 regs.R_CX = STATE_MOST; 527 528 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 529 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 530 531 mtx_lock(&vesa_lock); 532 switch (code) { 533 case STATE_SAVE: 534 x86bios_intr(®s, 0x10); 535 bcopy(vesa_state_buf, p, vesa_state_buf_size); 536 break; 537 case STATE_LOAD: 538 bcopy(p, vesa_state_buf, vesa_state_buf_size); 539 x86bios_intr(®s, 0x10); 540 break; 541 } 542 mtx_unlock(&vesa_lock); 543 544 return (regs.R_AX != 0x004f); 545} 546 547#ifdef MODE_TABLE_BROKEN 548static int 549vesa_bios_get_line_length(void) 550{ 551 x86regs_t regs; 552 553 x86bios_init_regs(®s); 554 regs.R_AX = 0x4f06; 555 regs.R_BL = 1; 556 557 x86bios_intr(®s, 0x10); 558 559 if (regs.R_AX != 0x004f) 560 return (-1); 561 562 return (regs.R_BX); 563} 564#endif 565 566static int 567vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 568{ 569 x86regs_t regs; 570 571 x86bios_init_regs(®s); 572 regs.R_AX = 0x4f06; 573 /* regs.R_BL = 0; */ 574 regs.R_CX = pixel; 575 576 x86bios_intr(®s, 0x10); 577 578#if VESA_DEBUG > 1 579 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 580#endif 581 if (regs.R_AX != 0x004f) 582 return (-1); 583 584 if (bytes != NULL) 585 *bytes = regs.R_BX; 586 if (lines != NULL) 587 *lines = regs.R_DX; 588 589 return (0); 590} 591 592#if 0 593static int 594vesa_bios_get_start(int *x, int *y) 595{ 596 x86regs_t regs; 597 598 x86bios_init_regs(®s); 599 regs.R_AX = 0x4f07; 600 regs.R_BL = 1; 601 602 x86bios_intr(®s, 0x10); 603 604 if (regs.R_AX != 0x004f) 605 return (-1); 606 607 *x = regs.R_CX; 608 *y = regs.R_DX; 609 610 return (0); 611} 612#endif 613 614static int 615vesa_bios_set_start(int x, int y) 616{ 617 x86regs_t regs; 618 619 x86bios_init_regs(®s); 620 regs.R_AX = 0x4f07; 621 regs.R_BL = 0x80; 622 regs.R_CX = x; 623 regs.R_DX = y; 624 625 x86bios_intr(®s, 0x10); 626 627 return (regs.R_AX != 0x004f); 628} 629 630/* map a generic video mode to a known mode */ 631static int 632vesa_map_gen_mode_num(int type, int color, int mode) 633{ 634 static struct { 635 int from; 636 int to; 637 } mode_map[] = { 638 { M_TEXT_132x25, M_VESA_C132x25 }, 639 { M_TEXT_132x43, M_VESA_C132x43 }, 640 { M_TEXT_132x50, M_VESA_C132x50 }, 641 { M_TEXT_132x60, M_VESA_C132x60 }, 642 }; 643 int i; 644 645 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 646 if (mode_map[i].from == mode) 647 return (mode_map[i].to); 648 } 649 return (mode); 650} 651 652static int 653vesa_translate_flags(u_int16_t vflags) 654{ 655 static struct { 656 u_int16_t mask; 657 int set; 658 int reset; 659 } ftable[] = { 660 { V_MODECOLOR, V_INFO_COLOR, 0 }, 661 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 662 { V_MODELFB, V_INFO_LINEAR, 0 }, 663 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 664 }; 665 int flags; 666 int i; 667 668 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 669 flags |= (vflags & ftable[i].mask) ? 670 ftable[i].set : ftable[i].reset; 671 } 672 return (flags); 673} 674 675static int 676vesa_translate_mmodel(u_int8_t vmodel) 677{ 678 static struct { 679 u_int8_t vmodel; 680 int mmodel; 681 } mtable[] = { 682 { V_MMTEXT, V_INFO_MM_TEXT }, 683 { V_MMCGA, V_INFO_MM_CGA }, 684 { V_MMHGC, V_INFO_MM_HGC }, 685 { V_MMEGA, V_INFO_MM_PLANAR }, 686 { V_MMPACKED, V_INFO_MM_PACKED }, 687 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 688 }; 689 int i; 690 691 for (i = 0; mtable[i].mmodel >= 0; ++i) { 692 if (mtable[i].vmodel == vmodel) 693 return (mtable[i].mmodel); 694 } 695 return (V_INFO_MM_OTHER); 696} 697 698static int 699vesa_get_bpscanline(struct vesa_mode *vmode) 700{ 701 int bpsl; 702 703 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 704 /* Find the minimum length. */ 705 switch (vmode->v_bpp / vmode->v_planes) { 706 case 1: 707 bpsl = vmode->v_width / 8; 708 break; 709 case 2: 710 bpsl = vmode->v_width / 4; 711 break; 712 case 4: 713 bpsl = vmode->v_width / 2; 714 break; 715 default: 716 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 717 bpsl /= vmode->v_planes; 718 break; 719 } 720 721 /* Use VBE 3.0 information if it looks sane. */ 722 if ((vmode->v_modeattr & V_MODELFB) != 0 && 723 vesa_adp_info->v_version >= 0x0300 && 724 vmode->v_linbpscanline > bpsl) 725 return (vmode->v_linbpscanline); 726 727 /* Return the minimum if the mode table looks absurd. */ 728 if (vmode->v_bpscanline < bpsl) 729 return (bpsl); 730 } 731 732 return (vmode->v_bpscanline); 733} 734 735#define VESA_MAXSTR 256 736 737#define VESA_STRCPY(dst, src) do { \ 738 char *str; \ 739 int i; \ 740 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 741 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 742 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 743 dst[i] = str[i]; \ 744 dst[i] = '\0'; \ 745} while (0) 746 747static int 748vesa_bios_init(void) 749{ 750 struct vesa_mode vmode; 751 struct vesa_info *buf; 752 video_info_t *p; 753 x86regs_t regs; 754 size_t bsize; 755 size_t msize; 756 void *vmbuf; 757 uint32_t offs; 758 uint16_t vers; 759 int is_via_cle266; 760 int modes; 761 int i; 762 763 if (vesa_init_done) 764 return (0); 765 766 has_vesa_bios = FALSE; 767 vesa_adp_info = NULL; 768 vesa_vmode_max = 0; 769 vesa_vmode[0].vi_mode = EOT; 770 771 /* 772 * If the VBE real mode interrupt vector is not found, try BIOS POST. 773 */ 774 if (x86bios_get_intr(0x10) == 0) { 775 if (vesa_bios_post() != 0) 776 return (1); 777 if (bootverbose) { 778 offs = x86bios_get_intr(0x10); 779 printf("VESA: interrupt vector installed (0x%x)\n", 780 BIOS_SADDRTOLADDR(offs)); 781 } 782 } 783 784 x86bios_init_regs(®s); 785 regs.R_AX = 0x4f00; 786 787 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 788 789 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 790 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 791 792 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 793 x86bios_intr(®s, 0x10); 794 795 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 796 goto fail; 797 798 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 799 bcopy(vmbuf, buf, sizeof(*buf)); 800 801 if (bootverbose) { 802 printf("VESA: information block\n"); 803 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 804 } 805 806 vers = buf->v_version = le16toh(buf->v_version); 807 buf->v_oemstr = le32toh(buf->v_oemstr); 808 buf->v_flags = le32toh(buf->v_flags); 809 buf->v_modetable = le32toh(buf->v_modetable); 810 buf->v_memsize = le16toh(buf->v_memsize); 811 buf->v_revision = le16toh(buf->v_revision); 812 buf->v_venderstr = le32toh(buf->v_venderstr); 813 buf->v_prodstr = le32toh(buf->v_prodstr); 814 buf->v_revstr = le32toh(buf->v_revstr); 815 816 if (vers < 0x0102) { 817 printf("VESA: VBE version %d.%d is not supported; " 818 "version 1.2 or later is required.\n", 819 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 820 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 821 goto fail; 822 } 823 824 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 825 if (vers >= 0x0200) { 826 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 827 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 828 VESA_STRCPY(vesa_revstr, buf->v_revstr); 829 } 830 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 831 sizeof(VESA_VIA_CLE266)) == 0; 832 833 if (buf->v_modetable == 0) 834 goto fail; 835 836 msize = (size_t)buf->v_memsize * 64 * 1024; 837 838 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 839 840 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 841 (vesa_vmodetab[i] != 0xffff); ++i) { 842 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 843 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 844 continue; 845 846 vmode.v_modeattr = le16toh(vmode.v_modeattr); 847 vmode.v_wgran = le16toh(vmode.v_wgran); 848 vmode.v_wsize = le16toh(vmode.v_wsize); 849 vmode.v_waseg = le16toh(vmode.v_waseg); 850 vmode.v_wbseg = le16toh(vmode.v_wbseg); 851 vmode.v_posfunc = le32toh(vmode.v_posfunc); 852 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 853 vmode.v_width = le16toh(vmode.v_width); 854 vmode.v_height = le16toh(vmode.v_height); 855 vmode.v_lfb = le32toh(vmode.v_lfb); 856 vmode.v_offscreen = le32toh(vmode.v_offscreen); 857 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 858 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 859 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 860 861 /* reject unsupported modes */ 862#if 0 863 if ((vmode.v_modeattr & 864 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 865 (V_MODESUPP | V_MODEOPTINFO)) 866 continue; 867#else 868 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 869#if VESA_DEBUG > 1 870 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 871 " attr = %x\n", 872 vmode.v_modeattr & V_MODEGRAPHICS ? 873 "graphics" : "text", 874 vmode.v_width, vmode.v_height, vmode.v_bpp, 875 vmode.v_modeattr); 876#endif 877 continue; 878 } 879#endif 880 881 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 882 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 883 bsize *= vmode.v_planes; 884 885 /* Does it have enough memory to support this mode? */ 886 if (msize < bsize) { 887#if VESA_DEBUG > 1 888 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 889 " attr = %x, not enough memory\n", 890 vmode.v_modeattr & V_MODEGRAPHICS ? 891 "graphics" : "text", 892 vmode.v_width, vmode.v_height, vmode.v_bpp, 893 vmode.v_modeattr); 894#endif 895 continue; 896 } 897 898 /* expand the array if necessary */ 899 if (modes >= vesa_vmode_max) { 900 vesa_vmode_max += MODE_TABLE_DELTA; 901 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 902 M_DEVBUF, M_WAITOK); 903#if VESA_DEBUG > 1 904 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 905 modes, vesa_vmode_max); 906#endif 907 if (modes > 0) { 908 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 909 free(vesa_vmode, M_DEVBUF); 910 } 911 vesa_vmode = p; 912 } 913 914#if VESA_DEBUG > 1 915 printf("Found VESA %s mode: %d x %d x %d bpp\n", 916 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 917 vmode.v_width, vmode.v_height, vmode.v_bpp); 918#endif 919 if (is_via_cle266) { 920 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 921 vmode.v_width &= 0xff; 922 vmode.v_waseg = 0xb8000 >> 4; 923 } 924 } 925 926 /* copy some fields */ 927 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 928 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 929 vesa_vmode[modes].vi_width = vmode.v_width; 930 vesa_vmode[modes].vi_height = vmode.v_height; 931 vesa_vmode[modes].vi_depth = vmode.v_bpp; 932 vesa_vmode[modes].vi_planes = vmode.v_planes; 933 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 934 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 935 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 936 /* XXX window B */ 937 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 938 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 939 if (vmode.v_modeattr & V_MODELFB) 940 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 941 vesa_vmode[modes].vi_buffer_size = bsize; 942 vesa_vmode[modes].vi_mem_model = 943 vesa_translate_mmodel(vmode.v_memmodel); 944 switch (vesa_vmode[modes].vi_mem_model) { 945 case V_INFO_MM_DIRECT: 946 if ((vmode.v_modeattr & V_MODELFB) != 0 && 947 vers >= 0x0300) { 948 vesa_vmode[modes].vi_pixel_fields[0] = 949 vmode.v_linredfieldpos; 950 vesa_vmode[modes].vi_pixel_fields[1] = 951 vmode.v_lingreenfieldpos; 952 vesa_vmode[modes].vi_pixel_fields[2] = 953 vmode.v_linbluefieldpos; 954 vesa_vmode[modes].vi_pixel_fields[3] = 955 vmode.v_linresfieldpos; 956 vesa_vmode[modes].vi_pixel_fsizes[0] = 957 vmode.v_linredmasksize; 958 vesa_vmode[modes].vi_pixel_fsizes[1] = 959 vmode.v_lingreenmasksize; 960 vesa_vmode[modes].vi_pixel_fsizes[2] = 961 vmode.v_linbluemasksize; 962 vesa_vmode[modes].vi_pixel_fsizes[3] = 963 vmode.v_linresmasksize; 964 } else { 965 vesa_vmode[modes].vi_pixel_fields[0] = 966 vmode.v_redfieldpos; 967 vesa_vmode[modes].vi_pixel_fields[1] = 968 vmode.v_greenfieldpos; 969 vesa_vmode[modes].vi_pixel_fields[2] = 970 vmode.v_bluefieldpos; 971 vesa_vmode[modes].vi_pixel_fields[3] = 972 vmode.v_resfieldpos; 973 vesa_vmode[modes].vi_pixel_fsizes[0] = 974 vmode.v_redmasksize; 975 vesa_vmode[modes].vi_pixel_fsizes[1] = 976 vmode.v_greenmasksize; 977 vesa_vmode[modes].vi_pixel_fsizes[2] = 978 vmode.v_bluemasksize; 979 vesa_vmode[modes].vi_pixel_fsizes[3] = 980 vmode.v_resmasksize; 981 } 982 /* FALLTHROUGH */ 983 case V_INFO_MM_PACKED: 984 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 985 break; 986 } 987 vesa_vmode[modes].vi_flags = 988 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 989 990 ++modes; 991 } 992 vesa_vmode[modes].vi_mode = EOT; 993 994 if (bootverbose) 995 printf("VESA: %d mode(s) found\n", modes); 996 997 has_vesa_bios = (modes > 0); 998 if (!has_vesa_bios) 999 goto fail; 1000 1001 x86bios_free(vmbuf, sizeof(*buf)); 1002 1003 vesa_state_buf_size = vesa_bios_state_buf_size(); 1004 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1005 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1006 if (vesa_state_buf_size > 0) { 1007 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1008 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1009 } 1010 1011 return (0); 1012 1013fail: 1014 if (vmbuf != NULL) 1015 x86bios_free(vmbuf, sizeof(buf)); 1016 if (vesa_adp_info != NULL) { 1017 free(vesa_adp_info, M_DEVBUF); 1018 vesa_adp_info = NULL; 1019 } 1020 if (vesa_oemstr != NULL) { 1021 free(vesa_oemstr, M_DEVBUF); 1022 vesa_oemstr = NULL; 1023 } 1024 if (vesa_venderstr != NULL) { 1025 free(vesa_venderstr, M_DEVBUF); 1026 vesa_venderstr = NULL; 1027 } 1028 if (vesa_prodstr != NULL) { 1029 free(vesa_prodstr, M_DEVBUF); 1030 vesa_prodstr = NULL; 1031 } 1032 if (vesa_revstr != NULL) { 1033 free(vesa_revstr, M_DEVBUF); 1034 vesa_revstr = NULL; 1035 } 1036 return (1); 1037} 1038 1039static void 1040vesa_clear_modes(video_info_t *info, int color) 1041{ 1042 while (info->vi_mode != EOT) { 1043 if ((info->vi_flags & V_INFO_COLOR) != color) 1044 info->vi_mode = NA; 1045 ++info; 1046 } 1047} 1048 1049/* entry points */ 1050 1051static int 1052vesa_configure(int flags) 1053{ 1054 video_adapter_t *adp; 1055 int adapters; 1056 int error; 1057 int i; 1058 1059 if (vesa_init_done) 1060 return (0); 1061 if (flags & VIO_PROBE_ONLY) 1062 return (0); 1063 1064 /* 1065 * If the VESA module has already been loaded, abort loading 1066 * the module this time. 1067 */ 1068 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1069 if (adp->va_flags & V_ADP_VESA) 1070 return (ENXIO); 1071 if (adp->va_type == KD_VGA) 1072 break; 1073 } 1074 1075 /* 1076 * The VGA adapter is not found. This is because either 1077 * 1) the VGA driver has not been initialized, or 2) the VGA card 1078 * is not present. If 1) is the case, we shall defer 1079 * initialization for now and try again later. 1080 */ 1081 if (adp == NULL) { 1082 vga_sub_configure = vesa_configure; 1083 return (ENODEV); 1084 } 1085 1086 /* count number of registered adapters */ 1087 for (++i; vid_get_adapter(i) != NULL; ++i) 1088 ; 1089 adapters = i; 1090 1091 /* call VESA BIOS */ 1092 vesa_adp = adp; 1093 if (vesa_bios_init()) { 1094 vesa_adp = NULL; 1095 return (ENXIO); 1096 } 1097 vesa_adp->va_flags |= V_ADP_VESA; 1098 1099 /* remove conflicting modes if we have more than one adapter */ 1100 if (adapters > 1) { 1101 vesa_clear_modes(vesa_vmode, 1102 (vesa_adp->va_flags & V_ADP_COLOR) ? 1103 V_INFO_COLOR : 0); 1104 } 1105 1106 if ((error = vesa_load_ioctl()) == 0) { 1107 prevvidsw = vidsw[vesa_adp->va_index]; 1108 vidsw[vesa_adp->va_index] = &vesavidsw; 1109 vesa_init_done = TRUE; 1110 } else { 1111 vesa_adp = NULL; 1112 return (error); 1113 } 1114 1115 return (0); 1116} 1117 1118#if 0 1119static int 1120vesa_nop(void) 1121{ 1122 1123 return (0); 1124} 1125#endif 1126 1127static int 1128vesa_error(void) 1129{ 1130 1131 return (1); 1132} 1133 1134static int 1135vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1136{ 1137 1138 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1139} 1140 1141static int 1142vesa_init(int unit, video_adapter_t *adp, int flags) 1143{ 1144 1145 return ((*prevvidsw->init)(unit, adp, flags)); 1146} 1147 1148static int 1149vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1150{ 1151 int i; 1152 1153 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1154 return (0); 1155 1156 if (adp != vesa_adp) 1157 return (1); 1158 1159 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1160 vesa_adp->va_flags & V_ADP_COLOR, mode); 1161 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1162 if (vesa_vmode[i].vi_mode == NA) 1163 continue; 1164 if (vesa_vmode[i].vi_mode == mode) { 1165 *info = vesa_vmode[i]; 1166 return (0); 1167 } 1168 } 1169 return (1); 1170} 1171 1172static int 1173vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1174{ 1175 int i; 1176 1177 if ((*prevvidsw->query_mode)(adp, info) == 0) 1178 return (0); 1179 if (adp != vesa_adp) 1180 return (ENODEV); 1181 1182 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1183 if ((info->vi_width != 0) 1184 && (info->vi_width != vesa_vmode[i].vi_width)) 1185 continue; 1186 if ((info->vi_height != 0) 1187 && (info->vi_height != vesa_vmode[i].vi_height)) 1188 continue; 1189 if ((info->vi_cwidth != 0) 1190 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1191 continue; 1192 if ((info->vi_cheight != 0) 1193 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1194 continue; 1195 if ((info->vi_depth != 0) 1196 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1197 continue; 1198 if ((info->vi_planes != 0) 1199 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1200 continue; 1201 /* pixel format, memory model */ 1202 if ((info->vi_flags != 0) 1203 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1204 continue; 1205 *info = vesa_vmode[i]; 1206 return (0); 1207 } 1208 return (ENODEV); 1209} 1210 1211static int 1212vesa_set_mode(video_adapter_t *adp, int mode) 1213{ 1214 video_info_t info; 1215 1216 if (adp != vesa_adp) 1217 return ((*prevvidsw->set_mode)(adp, mode)); 1218 1219 mode = vesa_map_gen_mode_num(adp->va_type, 1220 adp->va_flags & V_ADP_COLOR, mode); 1221#if VESA_DEBUG > 0 1222 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1223 adp->va_mode, adp->va_mode, mode, mode); 1224#endif 1225 /* 1226 * If the current mode is a VESA mode and the new mode is not, 1227 * restore the state of the adapter first by setting one of the 1228 * standard VGA mode, so that non-standard, extended SVGA registers 1229 * are set to the state compatible with the standard VGA modes. 1230 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1231 * the new mode correctly. 1232 */ 1233 if (VESA_MODE(adp->va_mode)) { 1234 if (!VESA_MODE(mode) && 1235 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1236 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1237 vesa_bios_set_dac(6); 1238 adp->va_flags &= ~V_ADP_DAC8; 1239 } 1240 int10_set_mode(adp->va_initial_bios_mode); 1241 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1242 pmap_unmapdev(adp->va_buffer, 1243 vesa_adp_info->v_memsize * 64 * 1024); 1244 /* 1245 * Once (*prevvidsw->get_info)() succeeded, 1246 * (*prevvidsw->set_mode)() below won't fail... 1247 */ 1248 } 1249 } 1250 1251 /* we may not need to handle this mode after all... */ 1252 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1253 return (0); 1254 1255 /* is the new mode supported? */ 1256 if (vesa_get_info(adp, mode, &info)) 1257 return (1); 1258 /* assert(VESA_MODE(mode)); */ 1259 1260#if VESA_DEBUG > 0 1261 printf("VESA: about to set a VESA mode...\n"); 1262#endif 1263 /* don't use the linear frame buffer for text modes. XXX */ 1264 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1265 info.vi_flags &= ~V_INFO_LINEAR; 1266 1267 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1268 return (1); 1269 1270 /* Palette format is reset by the above VBE function call. */ 1271 adp->va_flags &= ~V_ADP_DAC8; 1272 1273 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1274 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1275 vesa_bios_set_dac(8) > 6) 1276 adp->va_flags |= V_ADP_DAC8; 1277 1278 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1279 pmap_unmapdev(adp->va_buffer, 1280 vesa_adp_info->v_memsize * 64 * 1024); 1281 1282#if VESA_DEBUG > 0 1283 printf("VESA: mode set!\n"); 1284#endif 1285 vesa_adp->va_mode = mode; 1286 vesa_adp->va_flags &= ~V_ADP_COLOR; 1287 vesa_adp->va_flags |= 1288 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1289 vesa_adp->va_crtc_addr = 1290 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1291 1292 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1293 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1294 vesa_adp->va_line_width /= info.vi_planes; 1295 1296#ifdef MODE_TABLE_BROKEN 1297 /* If VBE function returns bigger bytes per scan line, use it. */ 1298 { 1299 int bpsl = vesa_bios_get_line_length(); 1300 if (bpsl > vesa_adp->va_line_width) { 1301 vesa_adp->va_line_width = bpsl; 1302 info.vi_buffer_size = bpsl * info.vi_height; 1303 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1304 info.vi_buffer_size *= info.vi_planes; 1305 } 1306 } 1307#endif 1308 1309 if (info.vi_flags & V_INFO_LINEAR) { 1310#if VESA_DEBUG > 1 1311 printf("VESA: setting up LFB\n"); 1312#endif 1313 vesa_adp->va_buffer = 1314 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1315 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING); 1316 vesa_adp->va_window = vesa_adp->va_buffer; 1317 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1318 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1319 } else { 1320 vesa_adp->va_buffer = 0; 1321 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1322 vesa_adp->va_window_size = info.vi_window_size; 1323 vesa_adp->va_window_gran = info.vi_window_gran; 1324 } 1325 vesa_adp->va_buffer_size = info.vi_buffer_size; 1326 vesa_adp->va_window_orig = 0; 1327 vesa_adp->va_disp_start.x = 0; 1328 vesa_adp->va_disp_start.y = 0; 1329#if VESA_DEBUG > 0 1330 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1331 info.vi_width, vesa_adp->va_line_width); 1332#endif 1333 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1334 1335 /* move hardware cursor out of the way */ 1336 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1337 1338 return (0); 1339} 1340 1341static int 1342vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1343 u_char *data, int ch, int count) 1344{ 1345 1346 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1347 ch, count)); 1348} 1349 1350static int 1351vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1352 u_char *data, int ch, int count) 1353{ 1354 1355 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1356 ch, count)); 1357} 1358 1359static int 1360vesa_show_font(video_adapter_t *adp, int page) 1361{ 1362 1363 return ((*prevvidsw->show_font)(adp, page)); 1364} 1365 1366static int 1367vesa_save_palette(video_adapter_t *adp, u_char *palette) 1368{ 1369 int bits; 1370 1371 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1372 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1373 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1374 return (0); 1375 } 1376 1377 return ((*prevvidsw->save_palette)(adp, palette)); 1378} 1379 1380static int 1381vesa_load_palette(video_adapter_t *adp, u_char *palette) 1382{ 1383 int bits; 1384 1385 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1386 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1387 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1388 return (0); 1389 } 1390 1391 return ((*prevvidsw->load_palette)(adp, palette)); 1392} 1393 1394static int 1395vesa_set_border(video_adapter_t *adp, int color) 1396{ 1397 1398 return ((*prevvidsw->set_border)(adp, color)); 1399} 1400 1401static int 1402vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1403{ 1404 1405 if (adp != vesa_adp) 1406 return ((*prevvidsw->save_state)(adp, p, size)); 1407 1408 if (vesa_state_buf_size == 0) 1409 return (1); 1410 if (size == 0) 1411 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1412 if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1413 return (1); 1414 1415 ((adp_state_t *)p)->sig = V_STATE_SIG; 1416 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1417 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1418} 1419 1420static int 1421vesa_load_state(video_adapter_t *adp, void *p) 1422{ 1423 1424 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1425 return ((*prevvidsw->load_state)(adp, p)); 1426 1427 if (vesa_state_buf_size == 0) 1428 return (1); 1429 1430 /* Try BIOS POST to restore a sane state. */ 1431 (void)vesa_bios_post(); 1432 (void)int10_set_mode(adp->va_initial_bios_mode); 1433 (void)vesa_set_mode(adp, adp->va_mode); 1434 1435 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1436} 1437 1438#if 0 1439static int 1440vesa_get_origin(video_adapter_t *adp, off_t *offset) 1441{ 1442 x86regs_t regs; 1443 1444 x86bios_init_regs(®s); 1445 regs.R_AX = 0x4f05; 1446 regs.R_BL = 0x10; 1447 1448 x86bios_intr(®s, 0x10); 1449 1450 if (regs.R_AX != 0x004f) 1451 return (1); 1452 *offset = regs.DX * adp->va_window_gran; 1453 1454 return (0); 1455} 1456#endif 1457 1458static int 1459vesa_set_origin(video_adapter_t *adp, off_t offset) 1460{ 1461 x86regs_t regs; 1462 1463 /* 1464 * This function should return as quickly as possible to 1465 * maintain good performance of the system. For this reason, 1466 * error checking is kept minimal and let the VESA BIOS to 1467 * detect error. 1468 */ 1469 if (adp != vesa_adp) 1470 return ((*prevvidsw->set_win_org)(adp, offset)); 1471 1472 /* if this is a linear frame buffer, do nothing */ 1473 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1474 return (0); 1475 /* XXX */ 1476 if (adp->va_window_gran == 0) 1477 return (1); 1478 1479 x86bios_init_regs(®s); 1480 regs.R_AX = 0x4f05; 1481 regs.R_DX = offset / adp->va_window_gran; 1482 1483 x86bios_intr(®s, 0x10); 1484 1485 if (regs.R_AX != 0x004f) 1486 return (1); 1487 1488 x86bios_init_regs(®s); 1489 regs.R_AX = 0x4f05; 1490 regs.R_BL = 1; 1491 regs.R_DX = offset / adp->va_window_gran; 1492 x86bios_intr(®s, 0x10); 1493 1494 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1495 return (0); /* XXX */ 1496} 1497 1498static int 1499vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1500{ 1501 1502 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1503} 1504 1505static int 1506vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1507{ 1508 1509 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1510} 1511 1512static int 1513vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1514 int celsize, int blink) 1515{ 1516 1517 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1518 blink)); 1519} 1520 1521static int 1522vesa_blank_display(video_adapter_t *adp, int mode) 1523{ 1524 1525 /* XXX: use VESA DPMS */ 1526 return ((*prevvidsw->blank_display)(adp, mode)); 1527} 1528 1529static int 1530vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1531 int prot, vm_memattr_t *memattr) 1532{ 1533 1534#if VESA_DEBUG > 0 1535 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1536 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1537#endif 1538 1539 if ((adp == vesa_adp) && 1540 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1541 /* va_window_size == va_buffer_size/vi_planes */ 1542 /* XXX: is this correct? */ 1543 if (offset > adp->va_window_size - PAGE_SIZE) 1544 return (-1); 1545 *paddr = adp->va_info.vi_buffer + offset; 1546 return (0); 1547 } 1548 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1549} 1550 1551static int 1552vesa_clear(video_adapter_t *adp) 1553{ 1554 1555 return ((*prevvidsw->clear)(adp)); 1556} 1557 1558static int 1559vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1560{ 1561 1562 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1563} 1564 1565static int 1566vesa_bitblt(video_adapter_t *adp,...) 1567{ 1568 1569 /* FIXME */ 1570 return (1); 1571} 1572 1573static int 1574get_palette(video_adapter_t *adp, int base, int count, 1575 u_char *red, u_char *green, u_char *blue, u_char *trans) 1576{ 1577 u_char *r; 1578 u_char *g; 1579 u_char *b; 1580 int bits; 1581 int error; 1582 1583 if (base < 0 || base >= 256 || count < 0 || count > 256) 1584 return (1); 1585 if ((base + count) > 256) 1586 return (1); 1587 if (!VESA_MODE(adp->va_mode)) 1588 return (1); 1589 1590 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1591 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1592 g = r + count; 1593 b = g + count; 1594 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1595 if (error == 0) { 1596 copyout(r, red, count); 1597 copyout(g, green, count); 1598 copyout(b, blue, count); 1599 if (trans != NULL) { 1600 bzero(r, count); 1601 copyout(r, trans, count); 1602 } 1603 } 1604 free(r, M_DEVBUF); 1605 1606 return (error); 1607} 1608 1609static int 1610set_palette(video_adapter_t *adp, int base, int count, 1611 u_char *red, u_char *green, u_char *blue, u_char *trans) 1612{ 1613 u_char *r; 1614 u_char *g; 1615 u_char *b; 1616 int bits; 1617 int error; 1618 1619 if (base < 0 || base >= 256 || count < 0 || count > 256) 1620 return (1); 1621 if ((base + count) > 256) 1622 return (1); 1623 if (!VESA_MODE(adp->va_mode)) 1624 return (1); 1625 1626 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1627 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1628 g = r + count; 1629 b = g + count; 1630 copyin(red, r, count); 1631 copyin(green, g, count); 1632 copyin(blue, b, count); 1633 1634 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1635 free(r, M_DEVBUF); 1636 1637 return (error); 1638} 1639 1640static int 1641vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1642{ 1643 int bytes; 1644 1645 if (adp != vesa_adp) 1646 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1647 1648 switch (cmd) { 1649 case FBIO_SETWINORG: /* set frame buffer window origin */ 1650 if (!VESA_MODE(adp->va_mode)) 1651 return (*prevvidsw->ioctl)(adp, cmd, arg); 1652 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1653 1654 case FBIO_SETDISPSTART: /* set display start address */ 1655 if (!VESA_MODE(adp->va_mode)) 1656 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1657 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1658 ((video_display_start_t *)arg)->y)) 1659 return (ENODEV); 1660 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1661 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1662 return (0); 1663 1664 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1665 if (!VESA_MODE(adp->va_mode)) 1666 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1667 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1668 return (ENODEV); 1669 adp->va_line_width = bytes; 1670#if VESA_DEBUG > 1 1671 printf("new line width:%d\n", adp->va_line_width); 1672#endif 1673 return (0); 1674 1675 case FBIO_GETPALETTE: /* get color palette */ 1676 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1677 ((video_color_palette_t *)arg)->count, 1678 ((video_color_palette_t *)arg)->red, 1679 ((video_color_palette_t *)arg)->green, 1680 ((video_color_palette_t *)arg)->blue, 1681 ((video_color_palette_t *)arg)->transparent)) 1682 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1683 return (0); 1684 1685 1686 case FBIO_SETPALETTE: /* set color palette */ 1687 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1688 ((video_color_palette_t *)arg)->count, 1689 ((video_color_palette_t *)arg)->red, 1690 ((video_color_palette_t *)arg)->green, 1691 ((video_color_palette_t *)arg)->blue, 1692 ((video_color_palette_t *)arg)->transparent)) 1693 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1694 return (0); 1695 1696 case FBIOGETCMAP: /* get color palette */ 1697 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1698 ((struct fbcmap *)arg)->count, 1699 ((struct fbcmap *)arg)->red, 1700 ((struct fbcmap *)arg)->green, 1701 ((struct fbcmap *)arg)->blue, NULL)) 1702 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1703 return (0); 1704 1705 case FBIOPUTCMAP: /* set color palette */ 1706 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1707 ((struct fbcmap *)arg)->count, 1708 ((struct fbcmap *)arg)->red, 1709 ((struct fbcmap *)arg)->green, 1710 ((struct fbcmap *)arg)->blue, NULL)) 1711 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1712 return (0); 1713 1714 default: 1715 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1716 } 1717} 1718 1719static int 1720vesa_diag(video_adapter_t *adp, int level) 1721{ 1722 int error; 1723 1724 /* call the previous handler first */ 1725 error = (*prevvidsw->diag)(adp, level); 1726 if (error) 1727 return (error); 1728 1729 if (adp != vesa_adp) 1730 return (1); 1731 1732 if (level <= 0) 1733 return (0); 1734 1735 return (0); 1736} 1737 1738static int 1739vesa_bios_info(int level) 1740{ 1741#if VESA_DEBUG > 1 1742 struct vesa_mode vmode; 1743 int i; 1744#endif 1745 uint16_t vers; 1746 1747 vers = vesa_adp_info->v_version; 1748 1749 if (bootverbose) { 1750 /* general adapter information */ 1751 printf( 1752 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1753 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1754 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1755 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1756 vesa_vmodetab, vesa_adp_info->v_modetable); 1757 1758 /* OEM string */ 1759 if (vesa_oemstr != NULL) 1760 printf("VESA: %s\n", vesa_oemstr); 1761 } 1762 1763 if (level <= 0) 1764 return (0); 1765 1766 if (vers >= 0x0200 && bootverbose) { 1767 /* vender name, product name, product revision */ 1768 printf("VESA: %s %s %s\n", 1769 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1770 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1771 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1772 } 1773 1774#if VESA_DEBUG > 1 1775 /* mode information */ 1776 for (i = 0; 1777 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1778 && (vesa_vmodetab[i] != 0xffff); ++i) { 1779 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1780 continue; 1781 1782 /* print something for diagnostic purpose */ 1783 printf("VESA: mode:0x%03x, flags:0x%04x", 1784 vesa_vmodetab[i], vmode.v_modeattr); 1785 if (vmode.v_modeattr & V_MODEOPTINFO) { 1786 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1787 printf(", G %dx%dx%d %d, ", 1788 vmode.v_width, vmode.v_height, 1789 vmode.v_bpp, vmode.v_planes); 1790 } else { 1791 printf(", T %dx%d, ", 1792 vmode.v_width, vmode.v_height); 1793 } 1794 printf("font:%dx%d, ", 1795 vmode.v_cwidth, vmode.v_cheight); 1796 printf("pages:%d, mem:%d", 1797 vmode.v_ipages + 1, vmode.v_memmodel); 1798 } 1799 if (vmode.v_modeattr & V_MODELFB) { 1800 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1801 vmode.v_lfb, vmode.v_offscreen, 1802 vmode.v_offscreensize*1024); 1803 } 1804 printf("\n"); 1805 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1806 vmode.v_waseg, vmode.v_waattr, 1807 vmode.v_wbseg, vmode.v_wbattr); 1808 printf("size:%dk, gran:%dk\n", 1809 vmode.v_wsize, vmode.v_wgran); 1810 } 1811#endif /* VESA_DEBUG > 1 */ 1812 1813 return (0); 1814} 1815 1816/* module loading */ 1817 1818static int 1819vesa_load(void) 1820{ 1821 int error; 1822 1823 if (vesa_init_done) 1824 return (0); 1825 1826 mtx_init(&vesa_lock, "VESA lock", NULL, MTX_DEF); 1827 1828 /* locate a VGA adapter */ 1829 vesa_adp = NULL; 1830 error = vesa_configure(0); 1831 1832 if (error == 0) 1833 vesa_bios_info(bootverbose); 1834 1835 return (error); 1836} 1837 1838static int 1839vesa_unload(void) 1840{ 1841 u_char palette[256*3]; 1842 int error; 1843 1844 /* if the adapter is currently in a VESA mode, don't unload */ 1845 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1846 return (EBUSY); 1847 /* 1848 * FIXME: if there is at least one vty which is in a VESA mode, 1849 * we shouldn't be unloading! XXX 1850 */ 1851 1852 if ((error = vesa_unload_ioctl()) == 0) { 1853 if (vesa_adp != NULL) { 1854 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1855 vesa_bios_save_palette(0, 256, palette, 8); 1856 vesa_bios_set_dac(6); 1857 vesa_adp->va_flags &= ~V_ADP_DAC8; 1858 vesa_bios_load_palette(0, 256, palette, 6); 1859 } 1860 vesa_adp->va_flags &= ~V_ADP_VESA; 1861 vidsw[vesa_adp->va_index] = prevvidsw; 1862 } 1863 } 1864 1865 if (vesa_adp_info != NULL) 1866 free(vesa_adp_info, M_DEVBUF); 1867 if (vesa_oemstr != NULL) 1868 free(vesa_oemstr, M_DEVBUF); 1869 if (vesa_venderstr != NULL) 1870 free(vesa_venderstr, M_DEVBUF); 1871 if (vesa_prodstr != NULL) 1872 free(vesa_prodstr, M_DEVBUF); 1873 if (vesa_revstr != NULL) 1874 free(vesa_revstr, M_DEVBUF); 1875 if (vesa_vmode != &vesa_vmode_empty) 1876 free(vesa_vmode, M_DEVBUF); 1877 if (vesa_palette != NULL) 1878 x86bios_free(vesa_palette, 1879 VESA_PALETTE_SIZE + vesa_state_buf_size); 1880 1881 mtx_destroy(&vesa_lock); 1882 1883 return (error); 1884} 1885 1886static int 1887vesa_mod_event(module_t mod, int type, void *data) 1888{ 1889 1890 switch (type) { 1891 case MOD_LOAD: 1892 return (vesa_load()); 1893 case MOD_UNLOAD: 1894 return (vesa_unload()); 1895 } 1896 return (EOPNOTSUPP); 1897} 1898 1899static moduledata_t vesa_mod = { 1900 "vesa", 1901 vesa_mod_event, 1902 NULL, 1903}; 1904 1905DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1906MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1907 1908#endif /* VGA_NO_MODE_CHANGE */ 1909