vesa.c revision 198911
1/*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/fb/vesa.c 198911 2009-11-04 17:30:48Z jkim $"); 29 30#include "opt_vga.h" 31#include "opt_vesa.h" 32 33#ifndef VGA_NO_MODE_CHANGE 34 35#include <sys/param.h> 36#include <sys/bus.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/module.h> 40#include <sys/malloc.h> 41#include <sys/fbio.h> 42 43#include <vm/vm.h> 44#include <vm/vm_extern.h> 45#include <vm/vm_kern.h> 46#include <vm/vm_param.h> 47#include <vm/pmap.h> 48 49#include <machine/pc/bios.h> 50#include <dev/fb/vesa.h> 51 52#include <dev/fb/fbreg.h> 53#include <dev/fb/vgareg.h> 54 55#include <dev/pci/pcivar.h> 56 57#include <isa/isareg.h> 58 59#include <compat/x86bios/x86bios.h> 60 61#define VESA_VIA_CLE266 "VIA CLE266\r\n" 62 63#ifndef VESA_DEBUG 64#define VESA_DEBUG 0 65#endif 66 67/* VESA video adapter state buffer stub */ 68struct adp_state { 69 int sig; 70#define V_STATE_SIG 0x61736576 71 u_char regs[1]; 72}; 73typedef struct adp_state adp_state_t; 74 75/* VESA video adapter */ 76static video_adapter_t *vesa_adp = NULL; 77static ssize_t vesa_state_buf_size = -1; 78 79/* VESA functions */ 80#if 0 81static int vesa_nop(void); 82#endif 83static int vesa_error(void); 84static vi_probe_t vesa_probe; 85static vi_init_t vesa_init; 86static vi_get_info_t vesa_get_info; 87static vi_query_mode_t vesa_query_mode; 88static vi_set_mode_t vesa_set_mode; 89static vi_save_font_t vesa_save_font; 90static vi_load_font_t vesa_load_font; 91static vi_show_font_t vesa_show_font; 92static vi_save_palette_t vesa_save_palette; 93static vi_load_palette_t vesa_load_palette; 94static vi_set_border_t vesa_set_border; 95static vi_save_state_t vesa_save_state; 96static vi_load_state_t vesa_load_state; 97static vi_set_win_org_t vesa_set_origin; 98static vi_read_hw_cursor_t vesa_read_hw_cursor; 99static vi_set_hw_cursor_t vesa_set_hw_cursor; 100static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 101static vi_blank_display_t vesa_blank_display; 102static vi_mmap_t vesa_mmap; 103static vi_ioctl_t vesa_ioctl; 104static vi_clear_t vesa_clear; 105static vi_fill_rect_t vesa_fill_rect; 106static vi_bitblt_t vesa_bitblt; 107static vi_diag_t vesa_diag; 108static int vesa_bios_info(int level); 109 110static video_switch_t vesavidsw = { 111 vesa_probe, 112 vesa_init, 113 vesa_get_info, 114 vesa_query_mode, 115 vesa_set_mode, 116 vesa_save_font, 117 vesa_load_font, 118 vesa_show_font, 119 vesa_save_palette, 120 vesa_load_palette, 121 vesa_set_border, 122 vesa_save_state, 123 vesa_load_state, 124 vesa_set_origin, 125 vesa_read_hw_cursor, 126 vesa_set_hw_cursor, 127 vesa_set_hw_cursor_shape, 128 vesa_blank_display, 129 vesa_mmap, 130 vesa_ioctl, 131 vesa_clear, 132 vesa_fill_rect, 133 vesa_bitblt, 134 vesa_error, 135 vesa_error, 136 vesa_diag, 137}; 138 139static video_switch_t *prevvidsw; 140 141/* VESA BIOS video modes */ 142#define VESA_MAXMODES 64 143#define EOT (-1) 144#define NA (-2) 145 146#define MODE_TABLE_DELTA 8 147 148static int vesa_vmode_max = 0; 149static video_info_t vesa_vmode_empty = { EOT }; 150static video_info_t *vesa_vmode = &vesa_vmode_empty; 151 152static int vesa_init_done = FALSE; 153static int has_vesa_bios = FALSE; 154static struct vesa_info *vesa_adp_info = NULL; 155static u_int16_t *vesa_vmodetab = NULL; 156static char *vesa_oemstr = NULL; 157static char *vesa_venderstr = NULL; 158static char *vesa_prodstr = NULL; 159static char *vesa_revstr = NULL; 160 161/* local macros and functions */ 162#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 163 164static int int10_set_mode(int mode); 165static int vesa_bios_post(void); 166static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 167static int vesa_bios_get_current_mode(void); 168static int vesa_bios_set_mode(int mode); 169static int vesa_bios_get_dac(void); 170static int vesa_bios_set_dac(int bits); 171static int vesa_bios_save_palette(int start, int colors, u_char *palette, 172 int bits); 173static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 174 u_char *b, int bits); 175static int vesa_bios_load_palette(int start, int colors, u_char *palette, 176 int bits); 177static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 178 u_char *b, int bits); 179#define STATE_SIZE 0 180#define STATE_SAVE 1 181#define STATE_LOAD 2 182#define STATE_HW (1<<0) 183#define STATE_DATA (1<<1) 184#define STATE_DAC (1<<2) 185#define STATE_REG (1<<3) 186#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 187#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 188static ssize_t vesa_bios_state_buf_size(void); 189static int vesa_bios_save_restore(int code, void *p, size_t size); 190static int vesa_bios_get_line_length(void); 191static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 192#if 0 193static int vesa_bios_get_start(int *x, int *y); 194#endif 195static int vesa_bios_set_start(int x, int y); 196static int vesa_map_gen_mode_num(int type, int color, int mode); 197static int vesa_translate_flags(u_int16_t vflags); 198static int vesa_translate_mmodel(u_int8_t vmodel); 199static int vesa_get_line_width(video_info_t *info); 200static int vesa_bios_init(void); 201static void vesa_clear_modes(video_info_t *info, int color); 202static vm_offset_t vesa_map_buffer(u_int paddr, size_t size); 203static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size); 204 205#if 0 206static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 207#endif 208 209static void 210dump_buffer(u_char *buf, size_t len) 211{ 212 int i; 213 214 for(i = 0; i < len;) { 215 printf("%02x ", buf[i]); 216 if ((++i % 16) == 0) 217 printf("\n"); 218 } 219} 220 221/* INT 10 BIOS calls */ 222static int 223int10_set_mode(int mode) 224{ 225 x86regs_t regs; 226 227 x86bios_init_regs(®s); 228 regs.R_AL = mode; 229 230 x86bios_intr(®s, 0x10); 231 232 return (0); 233} 234 235static int 236vesa_bios_post(void) 237{ 238 x86regs_t regs; 239 devclass_t dc; 240 device_t *devs; 241 device_t dev; 242 int count, i, is_pci; 243 244 if (x86bios_get_orm(0xc0000) == NULL) 245 return (1); 246 247 dev = NULL; 248 is_pci = 0; 249 250 /* Find the matching PCI video controller. */ 251 dc = devclass_find("vgapci"); 252 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 253 for (dev = NULL, i = 0; dev == NULL && i < count; devs++, i++) 254 if (x86bios_match_device(0xc0000, *devs) && 255 device_get_flags(*devs) != 0) { 256 dev = *devs; 257 is_pci = 1; 258 break; 259 } 260 free(devs, M_TEMP); 261 } 262 263 /* Try VGA if a PCI device is not found. */ 264 if (dev == NULL) { 265 dc = devclass_find(VGA_DRIVER_NAME); 266 if (dc != NULL) 267 dev = devclass_get_device(dc, 0); 268 } 269 270 if (bootverbose) 271 printf("%s: calling BIOS POST\n", 272 dev == NULL ? "VESA" : device_get_nameunit(dev)); 273 274 x86bios_init_regs(®s); 275 if (is_pci) { 276 regs.R_AH = pci_get_bus(dev); 277 regs.R_AL = (pci_get_slot(dev) << 3) | 278 (pci_get_function(dev) & 0x07); 279 } 280 regs.R_DL = 0x80; 281 x86bios_call(®s, 0xc000, 0x0003); 282 283 if (x86bios_get_intr(0x10) == 0) 284 return (1); 285 286 return (0); 287} 288 289/* VESA BIOS calls */ 290static int 291vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 292{ 293 x86regs_t regs; 294 uint32_t offs; 295 void *buf; 296 297 buf = x86bios_alloc(&offs, sizeof(*vmode)); 298 if (buf == NULL) 299 return (1); 300 301 x86bios_init_regs(®s); 302 regs.R_AX = 0x4f01; 303 regs.R_CX = mode; 304 305 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 306 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 307 308 x86bios_intr(®s, 0x10); 309 310 if (regs.R_AX != 0x004f) { 311 x86bios_free(buf, sizeof(*vmode)); 312 return (1); 313 } 314 315 bcopy(buf, vmode, sizeof(*vmode)); 316 x86bios_free(buf, sizeof(*vmode)); 317 318 return (0); 319} 320 321static int 322vesa_bios_get_current_mode(void) 323{ 324 x86regs_t regs; 325 326 x86bios_init_regs(®s); 327 regs.R_AX = 0x4f03; 328 329 x86bios_intr(®s, 0x10); 330 331 if (regs.R_AX != 0x004f) 332 return (-1); 333 334 return (regs.R_BX); 335} 336 337static int 338vesa_bios_set_mode(int mode) 339{ 340 x86regs_t regs; 341 342 x86bios_init_regs(®s); 343 regs.R_AX = 0x4f02; 344 regs.R_BX = mode; 345 346 x86bios_intr(®s, 0x10); 347 348 return (regs.R_AX != 0x004f); 349} 350 351static int 352vesa_bios_get_dac(void) 353{ 354 x86regs_t regs; 355 356 x86bios_init_regs(®s); 357 regs.R_AX = 0x4f08; 358 regs.R_BL = 1; 359 360 x86bios_intr(®s, 0x10); 361 362 if (regs.R_AX != 0x004f) 363 return (6); 364 365 return (regs.R_BH); 366} 367 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 uint32_t offs; 391 u_char *p; 392 int i; 393 394 p = (u_char *)x86bios_alloc(&offs, colors * 4); 395 if (p == NULL) 396 return (1); 397 398 x86bios_init_regs(®s); 399 regs.R_AX = 0x4f09; 400 regs.R_BL = 1; 401 regs.R_CX = colors; 402 regs.R_DX = start; 403 404 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 405 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 406 407 x86bios_intr(®s, 0x10); 408 409 if (regs.R_AX != 0x004f) { 410 x86bios_free(p, colors * 4); 411 return (1); 412 } 413 414 bits = 8 - bits; 415 for (i = 0; i < colors; ++i) { 416 palette[i * 3] = p[i * 4 + 2] << bits; 417 palette[i * 3 + 1] = p[i * 4 + 1] << bits; 418 palette[i * 3 + 2] = p[i * 4] << bits; 419 } 420 x86bios_free(p, colors * 4); 421 422 return (0); 423} 424 425static int 426vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 427 int bits) 428{ 429 x86regs_t regs; 430 uint32_t offs; 431 u_char *p; 432 int i; 433 434 p = (u_char *)x86bios_alloc(&offs, colors * 4); 435 if (p == NULL) 436 return (1); 437 438 x86bios_init_regs(®s); 439 regs.R_AX = 0x4f09; 440 regs.R_BL = 1; 441 regs.R_CX = colors; 442 regs.R_DX = start; 443 444 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 445 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 446 447 x86bios_intr(®s, 0x10); 448 449 if (regs.R_AX != 0x004f) { 450 x86bios_free(p, colors * 4); 451 return (1); 452 } 453 454 bits = 8 - bits; 455 for (i = 0; i < colors; ++i) { 456 r[i] = p[i * 4 + 2] << bits; 457 g[i] = p[i * 4 + 1] << bits; 458 b[i] = p[i * 4] << bits; 459 } 460 x86bios_free(p, colors * 4); 461 462 return (0); 463} 464 465static int 466vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 467{ 468 x86regs_t regs; 469 uint32_t offs; 470 u_char *p; 471 int i; 472 473 p = (u_char *)x86bios_alloc(&offs, colors * 4); 474 if (p == NULL) 475 return (1); 476 477 x86bios_init_regs(®s); 478 regs.R_AX = 0x4f09; 479 /* regs.R_BL = 0; */ 480 regs.R_CX = colors; 481 regs.R_DX = start; 482 483 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 484 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 485 486 bits = 8 - bits; 487 for (i = 0; i < colors; ++i) { 488 p[i * 4] = palette[i * 3 + 2] >> bits; 489 p[i * 4 + 1] = palette[i * 3 + 1] >> bits; 490 p[i * 4 + 2] = palette[i * 3] >> bits; 491 p[i * 4 + 3] = 0; 492 } 493 x86bios_intr(®s, 0x10); 494 x86bios_free(p, colors * 4); 495 496 return (regs.R_AX != 0x004f); 497} 498 499static int 500vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 501 int bits) 502{ 503 x86regs_t regs; 504 uint32_t offs; 505 u_char *p; 506 int i; 507 508 p = (u_char *)x86bios_alloc(&offs, colors * 4); 509 if (p == NULL) 510 return (1); 511 512 x86bios_init_regs(®s); 513 regs.R_AX = 0x4f09; 514 /* regs.R_BL = 0; */ 515 regs.R_CX = colors; 516 regs.R_DX = start; 517 518 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 519 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 520 521 bits = 8 - bits; 522 for (i = 0; i < colors; ++i) { 523 p[i * 4] = b[i] >> bits; 524 p[i * 4 + 1] = g[i] >> bits; 525 p[i * 4 + 2] = r[i] >> bits; 526 p[i * 4 + 3] = 0; 527 } 528 x86bios_intr(®s, 0x10); 529 x86bios_free(p, colors * 4); 530 531 return (regs.R_AX != 0x004f); 532} 533 534static ssize_t 535vesa_bios_state_buf_size(void) 536{ 537 x86regs_t regs; 538 539 x86bios_init_regs(®s); 540 regs.R_AX = 0x4f04; 541 /* regs.R_DL = STATE_SIZE; */ 542 regs.R_CX = STATE_ALL; 543 544 x86bios_intr(®s, 0x10); 545 546 if (regs.R_AX != 0x004f) 547 return (0); 548 549 return (regs.R_BX * 64); 550} 551 552static int 553vesa_bios_save_restore(int code, void *p, size_t size) 554{ 555 x86regs_t regs; 556 uint32_t offs; 557 void *buf; 558 559 if (code != STATE_SAVE && code != STATE_LOAD) 560 return (1); 561 562 buf = x86bios_alloc(&offs, size); 563 564 x86bios_init_regs(®s); 565 regs.R_AX = 0x4f04; 566 regs.R_DL = code; 567 regs.R_CX = STATE_ALL; 568 569 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 570 regs.R_BX = X86BIOS_PHYSTOOFF(offs); 571 572 switch (code) { 573 case STATE_SAVE: 574 x86bios_intr(®s, 0x10); 575 bcopy(buf, p, size); 576 break; 577 case STATE_LOAD: 578 bcopy(p, buf, size); 579 x86bios_intr(®s, 0x10); 580 break; 581 } 582 x86bios_free(buf, size); 583 584 return (regs.R_AX != 0x004f); 585} 586 587static int 588vesa_bios_get_line_length(void) 589{ 590 x86regs_t regs; 591 592 x86bios_init_regs(®s); 593 regs.R_AX = 0x4f06; 594 regs.R_BL = 1; 595 596 x86bios_intr(®s, 0x10); 597 598 if (regs.R_AX != 0x004f) 599 return (-1); 600 601 return (regs.R_BX); 602} 603 604static int 605vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 606{ 607 x86regs_t regs; 608 609 x86bios_init_regs(®s); 610 regs.R_AX = 0x4f06; 611 /* regs.R_BL = 0; */ 612 regs.R_CX = pixel; 613 614 x86bios_intr(®s, 0x10); 615 616#if VESA_DEBUG > 1 617 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 618#endif 619 if (regs.R_AX != 0x004f) 620 return (-1); 621 622 if (bytes != NULL) 623 *bytes = regs.R_BX; 624 if (lines != NULL) 625 *lines = regs.R_DX; 626 627 return (0); 628} 629 630#if 0 631static int 632vesa_bios_get_start(int *x, int *y) 633{ 634 x86regs_t regs; 635 636 x86bios_init_regs(®s); 637 regs.R_AX = 0x4f07; 638 regs.R_BL = 1; 639 640 x86bios_intr(®s, 0x10); 641 642 if (regs.R_AX != 0x004f) 643 return (-1); 644 645 *x = regs.R_CX; 646 *y = regs.R_DX; 647 648 return (0); 649} 650#endif 651 652static int 653vesa_bios_set_start(int x, int y) 654{ 655 x86regs_t regs; 656 657 x86bios_init_regs(®s); 658 regs.R_AX = 0x4f07; 659 regs.R_BL = 0x80; 660 regs.R_CX = x; 661 regs.R_DX = y; 662 663 x86bios_intr(®s, 0x10); 664 665 return (regs.R_AX != 0x004f); 666} 667 668/* map a generic video mode to a known mode */ 669static int 670vesa_map_gen_mode_num(int type, int color, int mode) 671{ 672 static struct { 673 int from; 674 int to; 675 } mode_map[] = { 676 { M_TEXT_132x25, M_VESA_C132x25 }, 677 { M_TEXT_132x43, M_VESA_C132x43 }, 678 { M_TEXT_132x50, M_VESA_C132x50 }, 679 { M_TEXT_132x60, M_VESA_C132x60 }, 680 }; 681 int i; 682 683 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 684 if (mode_map[i].from == mode) 685 return (mode_map[i].to); 686 } 687 return (mode); 688} 689 690static int 691vesa_translate_flags(u_int16_t vflags) 692{ 693 static struct { 694 u_int16_t mask; 695 int set; 696 int reset; 697 } ftable[] = { 698 { V_MODECOLOR, V_INFO_COLOR, 0 }, 699 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 700 { V_MODELFB, V_INFO_LINEAR, 0 }, 701 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 702 }; 703 int flags; 704 int i; 705 706 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 707 flags |= (vflags & ftable[i].mask) ? 708 ftable[i].set : ftable[i].reset; 709 } 710 return (flags); 711} 712 713static int 714vesa_translate_mmodel(u_int8_t vmodel) 715{ 716 static struct { 717 u_int8_t vmodel; 718 int mmodel; 719 } mtable[] = { 720 { V_MMTEXT, V_INFO_MM_TEXT }, 721 { V_MMCGA, V_INFO_MM_CGA }, 722 { V_MMHGC, V_INFO_MM_HGC }, 723 { V_MMEGA, V_INFO_MM_PLANAR }, 724 { V_MMPACKED, V_INFO_MM_PACKED }, 725 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 726 }; 727 int i; 728 729 for (i = 0; mtable[i].mmodel >= 0; ++i) { 730 if (mtable[i].vmodel == vmodel) 731 return (mtable[i].mmodel); 732 } 733 return (V_INFO_MM_OTHER); 734} 735 736static int 737vesa_get_line_width(video_info_t *info) 738{ 739 int len; 740 int width; 741 742 width = info->vi_width; 743 744 if (info->vi_flags & V_INFO_GRAPHICS) 745 switch (info->vi_depth / info->vi_planes) { 746 case 1: 747 return (width / 8); 748 case 2: 749 return (width / 4); 750 case 4: 751 return (width / 2); 752 case 8: 753 return (width); 754 case 15: 755 case 16: 756 return (width * 2); 757 case 24: 758 case 32: 759 return (width * 4); 760 } 761 762 len = vesa_bios_get_line_length(); 763 764 return (len > 0 ? len : width); 765} 766 767#define VESA_MAXSTR 256 768 769#define VESA_STRCPY(dst, src) do { \ 770 char *str; \ 771 int i; \ 772 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 773 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 774 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 775 dst[i] = str[i]; \ 776 dst[i] = '\0'; \ 777} while (0) 778 779static int 780vesa_bios_init(void) 781{ 782 static struct vesa_info buf; 783 struct vesa_mode vmode; 784 video_info_t *p; 785 x86regs_t regs; 786 size_t bsize; 787 void *vmbuf; 788 uint32_t offs; 789 uint16_t vers; 790 int is_via_cle266; 791 int modes; 792 int i; 793 794 if (vesa_init_done) 795 return (0); 796 797 has_vesa_bios = FALSE; 798 vesa_adp_info = NULL; 799 vesa_vmode_max = 0; 800 vesa_vmode[0].vi_mode = EOT; 801 802 /* 803 * If the VBE real mode interrupt vector is not found, try BIOS POST. 804 */ 805 if (x86bios_get_intr(0x10) == 0) { 806 if (vesa_bios_post() != 0) 807 return (1); 808 if (bootverbose) { 809 offs = x86bios_get_intr(0x10); 810 printf("VESA: interrupt vector installed (0x%x)\n", 811 BIOS_SADDRTOLADDR(offs)); 812 } 813 } 814 815 x86bios_init_regs(®s); 816 regs.R_AX = 0x4f00; 817 818 vmbuf = x86bios_alloc(&offs, sizeof(buf)); 819 if (vmbuf == NULL) 820 return (1); 821 822 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 823 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 824 825 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 826 x86bios_intr(®s, 0x10); 827 828 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 829 goto fail; 830 831 bcopy(vmbuf, &buf, sizeof(buf)); 832 833 vesa_adp_info = &buf; 834 if (bootverbose) { 835 printf("VESA: information block\n"); 836 dump_buffer((u_char *)&buf, sizeof(buf)); 837 } 838 839 vers = buf.v_version = le16toh(buf.v_version); 840 buf.v_oemstr = le32toh(buf.v_oemstr); 841 buf.v_flags = le32toh(buf.v_flags); 842 buf.v_modetable = le32toh(buf.v_modetable); 843 buf.v_memsize = le16toh(buf.v_memsize); 844 buf.v_revision = le16toh(buf.v_revision); 845 buf.v_venderstr = le32toh(buf.v_venderstr); 846 buf.v_prodstr = le32toh(buf.v_prodstr); 847 buf.v_revstr = le32toh(buf.v_revstr); 848 849 if (vers < 0x0102) { 850 printf("VESA: VBE version %d.%d is not supported; " 851 "version 1.2 or later is required.\n", 852 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 853 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 854 return (1); 855 } 856 857 VESA_STRCPY(vesa_oemstr, buf.v_oemstr); 858 if (vers >= 0x0200) { 859 VESA_STRCPY(vesa_venderstr, buf.v_venderstr); 860 VESA_STRCPY(vesa_prodstr, buf.v_prodstr); 861 VESA_STRCPY(vesa_revstr, buf.v_revstr); 862 } 863 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 864 sizeof(VESA_VIA_CLE266)) == 0; 865 866 if (buf.v_modetable == 0) 867 goto fail; 868 869 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf.v_modetable)); 870 871 for (i = 0, modes = 0; 872 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 873 && (vesa_vmodetab[i] != 0xffff); ++i) { 874 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 875 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 876 continue; 877 878 vmode.v_modeattr = le16toh(vmode.v_modeattr); 879 vmode.v_wgran = le16toh(vmode.v_wgran); 880 vmode.v_wsize = le16toh(vmode.v_wsize); 881 vmode.v_waseg = le16toh(vmode.v_waseg); 882 vmode.v_wbseg = le16toh(vmode.v_wbseg); 883 vmode.v_posfunc = le32toh(vmode.v_posfunc); 884 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 885 vmode.v_width = le16toh(vmode.v_width); 886 vmode.v_height = le16toh(vmode.v_height); 887 vmode.v_lfb = le32toh(vmode.v_lfb); 888 vmode.v_offscreen = le32toh(vmode.v_offscreen); 889 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 890 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 891 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 892 893 /* reject unsupported modes */ 894#if 0 895 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO 896 | V_MODENONVGA)) 897 != (V_MODESUPP | V_MODEOPTINFO)) 898 continue; 899#else 900 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 901#if VESA_DEBUG > 1 902 printf( 903 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n", 904 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 905 vmode.v_width, vmode.v_height, vmode.v_bpp, 906 vmode.v_modeattr); 907#endif 908 continue; 909 } 910#endif 911 912 /* expand the array if necessary */ 913 if (modes >= vesa_vmode_max) { 914 vesa_vmode_max += MODE_TABLE_DELTA; 915 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1), 916 M_DEVBUF, M_WAITOK); 917#if VESA_DEBUG > 1 918 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 919 modes, vesa_vmode_max); 920#endif 921 if (modes > 0) { 922 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 923 free(vesa_vmode, M_DEVBUF); 924 } 925 vesa_vmode = p; 926 } 927 928#if VESA_DEBUG > 1 929 printf("Found VESA %s mode: %d x %d x %d bpp\n", 930 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 931 vmode.v_width, vmode.v_height, vmode.v_bpp); 932#endif 933 if (is_via_cle266) { 934 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 935 vmode.v_width &= 0xff; 936 vmode.v_waseg = 0xb8000 >> 4; 937 } 938 } 939 940 /* copy some fields */ 941 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 942 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 943 vesa_vmode[modes].vi_width = vmode.v_width; 944 vesa_vmode[modes].vi_height = vmode.v_height; 945 vesa_vmode[modes].vi_depth = vmode.v_bpp; 946 vesa_vmode[modes].vi_planes = vmode.v_planes; 947 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 948 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 949 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4; 950 /* XXX window B */ 951 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024; 952 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024; 953 if (vmode.v_modeattr & V_MODELFB) 954 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 955 else 956 vesa_vmode[modes].vi_buffer = 0; 957 /* XXX */ 958 vesa_vmode[modes].vi_buffer_size 959 = vesa_adp_info->v_memsize*64*1024; 960#if 0 961 if (vmode.v_offscreen > vmode.v_lfb) 962 vesa_vmode[modes].vi_buffer_size 963 = vmode.v_offscreen + vmode.v_offscreensize*1024 964 - vmode.v_lfb; 965 else 966 vesa_vmode[modes].vi_buffer_size 967 = vmode.v_offscreen + vmode.v_offscreensize * 1024; 968#endif 969 vesa_vmode[modes].vi_mem_model 970 = vesa_translate_mmodel(vmode.v_memmodel); 971 vesa_vmode[modes].vi_pixel_fields[0] = 0; 972 vesa_vmode[modes].vi_pixel_fields[1] = 0; 973 vesa_vmode[modes].vi_pixel_fields[2] = 0; 974 vesa_vmode[modes].vi_pixel_fields[3] = 0; 975 vesa_vmode[modes].vi_pixel_fsizes[0] = 0; 976 vesa_vmode[modes].vi_pixel_fsizes[1] = 0; 977 vesa_vmode[modes].vi_pixel_fsizes[2] = 0; 978 vesa_vmode[modes].vi_pixel_fsizes[3] = 0; 979 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) { 980 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 981 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) { 982 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 983 vesa_vmode[modes].vi_pixel_fields[0] 984 = vmode.v_redfieldpos; 985 vesa_vmode[modes].vi_pixel_fields[1] 986 = vmode.v_greenfieldpos; 987 vesa_vmode[modes].vi_pixel_fields[2] 988 = vmode.v_bluefieldpos; 989 vesa_vmode[modes].vi_pixel_fields[3] 990 = vmode.v_resfieldpos; 991 vesa_vmode[modes].vi_pixel_fsizes[0] 992 = vmode.v_redmasksize; 993 vesa_vmode[modes].vi_pixel_fsizes[1] 994 = vmode.v_greenmasksize; 995 vesa_vmode[modes].vi_pixel_fsizes[2] 996 = vmode.v_bluemasksize; 997 vesa_vmode[modes].vi_pixel_fsizes[3] 998 = vmode.v_resmasksize; 999 } else { 1000 vesa_vmode[modes].vi_pixel_size = 0; 1001 } 1002 1003 vesa_vmode[modes].vi_flags 1004 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1005 1006 /* Does it have enough memory to support this mode? */ 1007 bsize = vesa_get_line_width(&vesa_vmode[modes]); 1008 bsize *= vesa_vmode[modes].vi_height; 1009 if (bsize > vesa_vmode[modes].vi_buffer_size) { 1010#if VESA_DEBUG > 1 1011 printf( 1012 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x, not enough memory\n", 1013 (vmode.v_modeattr & V_MODEGRAPHICS) != 0 ? "graphics" : "text", 1014 vmode.v_width, vmode.v_height, vmode.v_bpp, vmode.v_modeattr); 1015#endif 1016 continue; 1017 } 1018 1019 ++modes; 1020 } 1021 vesa_vmode[modes].vi_mode = EOT; 1022 1023 if (bootverbose) 1024 printf("VESA: %d mode(s) found\n", modes); 1025 1026 has_vesa_bios = (modes > 0); 1027 if (!has_vesa_bios) 1028 goto fail; 1029 1030 x86bios_free(vmbuf, sizeof(buf)); 1031 return (0); 1032 1033fail: 1034 if (vmbuf != NULL) 1035 x86bios_free(vmbuf, sizeof(buf)); 1036 if (vesa_oemstr != NULL) { 1037 free(vesa_oemstr, M_DEVBUF); 1038 vesa_oemstr = NULL; 1039 } 1040 if (vesa_venderstr != NULL) { 1041 free(vesa_venderstr, M_DEVBUF); 1042 vesa_venderstr = NULL; 1043 } 1044 if (vesa_prodstr != NULL) { 1045 free(vesa_prodstr, M_DEVBUF); 1046 vesa_prodstr = NULL; 1047 } 1048 if (vesa_revstr != NULL) { 1049 free(vesa_revstr, M_DEVBUF); 1050 vesa_revstr = NULL; 1051 } 1052 return (1); 1053} 1054 1055static void 1056vesa_clear_modes(video_info_t *info, int color) 1057{ 1058 while (info->vi_mode != EOT) { 1059 if ((info->vi_flags & V_INFO_COLOR) != color) 1060 info->vi_mode = NA; 1061 ++info; 1062 } 1063} 1064 1065static vm_offset_t 1066vesa_map_buffer(u_int paddr, size_t size) 1067{ 1068 vm_offset_t vaddr; 1069 u_int off; 1070 1071 off = paddr - trunc_page(paddr); 1072 vaddr = (vm_offset_t)pmap_mapdev_attr(paddr - off, size + off, 1073 PAT_WRITE_COMBINING); 1074#if VESA_DEBUG > 1 1075 printf("vesa_map_buffer: paddr:%x vaddr:%tx size:%zx off:%x\n", 1076 paddr, vaddr, size, off); 1077#endif 1078 return (vaddr + off); 1079} 1080 1081static void 1082vesa_unmap_buffer(vm_offset_t vaddr, size_t size) 1083{ 1084#if VESA_DEBUG > 1 1085 printf("vesa_unmap_buffer: vaddr:%tx size:%zx\n", vaddr, size); 1086#endif 1087 kmem_free(kernel_map, vaddr, size); 1088} 1089 1090/* entry points */ 1091 1092static int 1093vesa_configure(int flags) 1094{ 1095 video_adapter_t *adp; 1096 int adapters; 1097 int error; 1098 int i; 1099 1100 if (vesa_init_done) 1101 return (0); 1102 if (flags & VIO_PROBE_ONLY) 1103 return (0); 1104 1105 /* 1106 * If the VESA module has already been loaded, abort loading 1107 * the module this time. 1108 */ 1109 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1110 if (adp->va_flags & V_ADP_VESA) 1111 return (ENXIO); 1112 if (adp->va_type == KD_VGA) 1113 break; 1114 } 1115 1116 /* 1117 * The VGA adapter is not found. This is because either 1118 * 1) the VGA driver has not been initialized, or 2) the VGA card 1119 * is not present. If 1) is the case, we shall defer 1120 * initialization for now and try again later. 1121 */ 1122 if (adp == NULL) { 1123 vga_sub_configure = vesa_configure; 1124 return (ENODEV); 1125 } 1126 1127 /* count number of registered adapters */ 1128 for (++i; vid_get_adapter(i) != NULL; ++i) 1129 ; 1130 adapters = i; 1131 1132 /* call VESA BIOS */ 1133 vesa_adp = adp; 1134 if (vesa_bios_init()) { 1135 vesa_adp = NULL; 1136 return (ENXIO); 1137 } 1138 vesa_adp->va_flags |= V_ADP_VESA; 1139 1140 /* remove conflicting modes if we have more than one adapter */ 1141 if (adapters > 1) { 1142 vesa_clear_modes(vesa_vmode, 1143 (vesa_adp->va_flags & V_ADP_COLOR) ? 1144 V_INFO_COLOR : 0); 1145 } 1146 1147 if ((error = vesa_load_ioctl()) == 0) { 1148 prevvidsw = vidsw[vesa_adp->va_index]; 1149 vidsw[vesa_adp->va_index] = &vesavidsw; 1150 vesa_init_done = TRUE; 1151 } else { 1152 vesa_adp = NULL; 1153 return (error); 1154 } 1155 1156 return (0); 1157} 1158 1159#if 0 1160static int 1161vesa_nop(void) 1162{ 1163 1164 return (0); 1165} 1166#endif 1167 1168static int 1169vesa_error(void) 1170{ 1171 1172 return (1); 1173} 1174 1175static int 1176vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1177{ 1178 1179 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1180} 1181 1182static int 1183vesa_init(int unit, video_adapter_t *adp, int flags) 1184{ 1185 1186 return ((*prevvidsw->init)(unit, adp, flags)); 1187} 1188 1189static int 1190vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1191{ 1192 int i; 1193 1194 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1195 return (0); 1196 1197 if (adp != vesa_adp) 1198 return (1); 1199 1200 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1201 vesa_adp->va_flags & V_ADP_COLOR, mode); 1202 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1203 if (vesa_vmode[i].vi_mode == NA) 1204 continue; 1205 if (vesa_vmode[i].vi_mode == mode) { 1206 *info = vesa_vmode[i]; 1207 return (0); 1208 } 1209 } 1210 return (1); 1211} 1212 1213static int 1214vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1215{ 1216 int i; 1217 1218 if ((*prevvidsw->query_mode)(adp, info) == 0) 1219 return (0); 1220 if (adp != vesa_adp) 1221 return (ENODEV); 1222 1223 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1224 if ((info->vi_width != 0) 1225 && (info->vi_width != vesa_vmode[i].vi_width)) 1226 continue; 1227 if ((info->vi_height != 0) 1228 && (info->vi_height != vesa_vmode[i].vi_height)) 1229 continue; 1230 if ((info->vi_cwidth != 0) 1231 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1232 continue; 1233 if ((info->vi_cheight != 0) 1234 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1235 continue; 1236 if ((info->vi_depth != 0) 1237 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1238 continue; 1239 if ((info->vi_planes != 0) 1240 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1241 continue; 1242 /* pixel format, memory model */ 1243 if ((info->vi_flags != 0) 1244 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1245 continue; 1246 *info = vesa_vmode[i]; 1247 return (0); 1248 } 1249 return (ENODEV); 1250} 1251 1252static int 1253vesa_set_mode(video_adapter_t *adp, int mode) 1254{ 1255 video_info_t info; 1256 1257 if (adp != vesa_adp) 1258 return ((*prevvidsw->set_mode)(adp, mode)); 1259 1260 mode = vesa_map_gen_mode_num(adp->va_type, 1261 adp->va_flags & V_ADP_COLOR, mode); 1262#if VESA_DEBUG > 0 1263 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1264 adp->va_mode, adp->va_mode, mode, mode); 1265#endif 1266 /* 1267 * If the current mode is a VESA mode and the new mode is not, 1268 * restore the state of the adapter first by setting one of the 1269 * standard VGA mode, so that non-standard, extended SVGA registers 1270 * are set to the state compatible with the standard VGA modes. 1271 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1272 * the new mode correctly. 1273 */ 1274 if (VESA_MODE(adp->va_mode)) { 1275 if (!VESA_MODE(mode) && 1276 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1277 int10_set_mode(adp->va_initial_bios_mode); 1278 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1279 vesa_unmap_buffer(adp->va_buffer, 1280 vesa_adp_info->v_memsize*64*1024); 1281 /* 1282 * Once (*prevvidsw->get_info)() succeeded, 1283 * (*prevvidsw->set_mode)() below won't fail... 1284 */ 1285 } 1286 } 1287 1288 /* we may not need to handle this mode after all... */ 1289 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1290 return (0); 1291 1292 /* is the new mode supported? */ 1293 if (vesa_get_info(adp, mode, &info)) 1294 return (1); 1295 /* assert(VESA_MODE(mode)); */ 1296 1297#if VESA_DEBUG > 0 1298 printf("VESA: about to set a VESA mode...\n"); 1299#endif 1300 /* don't use the linear frame buffer for text modes. XXX */ 1301 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1302 info.vi_flags &= ~V_INFO_LINEAR; 1303 1304 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1305 return (1); 1306 1307 if ((vesa_adp_info->v_flags & V_DAC8) != 0) 1308 vesa_bios_set_dac(8); 1309 1310 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1311 vesa_unmap_buffer(adp->va_buffer, 1312 vesa_adp_info->v_memsize*64*1024); 1313 1314#if VESA_DEBUG > 0 1315 printf("VESA: mode set!\n"); 1316#endif 1317 vesa_adp->va_mode = mode; 1318 vesa_adp->va_flags &= ~V_ADP_COLOR; 1319 vesa_adp->va_flags |= 1320 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1321 vesa_adp->va_crtc_addr = 1322 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1323 if (info.vi_flags & V_INFO_LINEAR) { 1324#if VESA_DEBUG > 1 1325 printf("VESA: setting up LFB\n"); 1326#endif 1327 vesa_adp->va_buffer = 1328 vesa_map_buffer(info.vi_buffer, 1329 vesa_adp_info->v_memsize*64*1024); 1330 vesa_adp->va_buffer_size = info.vi_buffer_size; 1331 vesa_adp->va_window = vesa_adp->va_buffer; 1332 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes; 1333 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes; 1334 } else { 1335 vesa_adp->va_buffer = 0; 1336 vesa_adp->va_buffer_size = info.vi_buffer_size; 1337 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window); 1338 vesa_adp->va_window_size = info.vi_window_size; 1339 vesa_adp->va_window_gran = info.vi_window_gran; 1340 } 1341 vesa_adp->va_window_orig = 0; 1342 vesa_adp->va_line_width = vesa_get_line_width(&info); 1343 vesa_adp->va_disp_start.x = 0; 1344 vesa_adp->va_disp_start.y = 0; 1345#if VESA_DEBUG > 0 1346 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1347 info.vi_width, vesa_adp->va_line_width); 1348#endif 1349 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1350 1351 /* move hardware cursor out of the way */ 1352 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1353 1354 return (0); 1355} 1356 1357static int 1358vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1359 u_char *data, int ch, int count) 1360{ 1361 1362 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1363 ch, count)); 1364} 1365 1366static int 1367vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1368 u_char *data, int ch, int count) 1369{ 1370 1371 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1372 ch, count)); 1373} 1374 1375static int 1376vesa_show_font(video_adapter_t *adp, int page) 1377{ 1378 1379 return ((*prevvidsw->show_font)(adp, page)); 1380} 1381 1382static int 1383vesa_save_palette(video_adapter_t *adp, u_char *palette) 1384{ 1385 int bits; 1386 1387 if ((adp == vesa_adp) && 1388 (adp->va_info.vi_flags & V_INFO_NONVGA) != 0 && 1389 (bits = vesa_bios_get_dac()) >= 6) 1390 return (vesa_bios_save_palette(0, 256, palette, bits)); 1391 1392 return ((*prevvidsw->save_palette)(adp, palette)); 1393} 1394 1395static int 1396vesa_load_palette(video_adapter_t *adp, u_char *palette) 1397{ 1398 int bits; 1399 1400 if ((adp == vesa_adp) && 1401 (adp->va_info.vi_flags & V_INFO_NONVGA) != 0 && 1402 (bits = vesa_bios_get_dac()) >= 6) 1403 return (vesa_bios_load_palette(0, 256, palette, bits)); 1404 1405 return ((*prevvidsw->load_palette)(adp, palette)); 1406} 1407 1408static int 1409vesa_set_border(video_adapter_t *adp, int color) 1410{ 1411 1412 return ((*prevvidsw->set_border)(adp, color)); 1413} 1414 1415static int 1416vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1417{ 1418 1419 if (adp != vesa_adp) 1420 return ((*prevvidsw->save_state)(adp, p, size)); 1421 1422 if (vesa_state_buf_size == -1) { 1423 vesa_state_buf_size = vesa_bios_state_buf_size(); 1424 if (vesa_state_buf_size == 0) 1425 return (1); 1426 } 1427 if (size == 0) 1428 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1429 else if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1430 return (1); 1431 1432 ((adp_state_t *)p)->sig = V_STATE_SIG; 1433 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1434 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1435 vesa_state_buf_size)); 1436} 1437 1438static int 1439vesa_load_state(video_adapter_t *adp, void *p) 1440{ 1441 int flags, mode, ret; 1442 1443 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1444 return ((*prevvidsw->load_state)(adp, p)); 1445 1446 if (vesa_state_buf_size <= 0) 1447 return (1); 1448 1449 /* 1450 * If the current mode is not the same, probably it was powered down. 1451 * Try BIOS POST to restore a sane state. 1452 */ 1453 if (VESA_MODE(adp->va_mode)) { 1454 mode = vesa_bios_get_current_mode(); 1455 if (mode >= 0 && (mode & 0x1ff) != adp->va_mode) 1456 (void)vesa_bios_post(); 1457 } 1458 1459 ret = vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1460 vesa_state_buf_size); 1461 1462 /* 1463 * If the desired mode is not restored, force setting the mode. 1464 */ 1465 if (VESA_MODE(adp->va_mode)) { 1466 mode = vesa_bios_get_current_mode(); 1467 if (mode < 0 || (mode & 0x1ff) == adp->va_mode) 1468 return (ret); 1469 mode = adp->va_mode; 1470 flags = adp->va_info.vi_flags; 1471 if ((flags & V_INFO_GRAPHICS) != 0 && 1472 (flags & V_INFO_LINEAR) != 0) 1473 mode |= 0x4000; 1474 (void)vesa_bios_set_mode(mode); 1475 if ((vesa_adp_info->v_flags & V_DAC8) != 0) 1476 (void)vesa_bios_set_dac(8); 1477 (void)(*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1478 } 1479 1480 return (ret); 1481} 1482 1483#if 0 1484static int 1485vesa_get_origin(video_adapter_t *adp, off_t *offset) 1486{ 1487 x86regs_t regs; 1488 1489 x86bios_init_regs(®s); 1490 regs.R_AX = 0x4f05; 1491 regs.R_BL = 0x10; 1492 1493 x86bios_intr(®s, 0x10); 1494 1495 if (regs.R_AX != 0x004f) 1496 return (1); 1497 *offset = regs.DX * adp->va_window_gran; 1498 1499 return (0); 1500} 1501#endif 1502 1503static int 1504vesa_set_origin(video_adapter_t *adp, off_t offset) 1505{ 1506 x86regs_t regs; 1507 1508 /* 1509 * This function should return as quickly as possible to 1510 * maintain good performance of the system. For this reason, 1511 * error checking is kept minimal and let the VESA BIOS to 1512 * detect error. 1513 */ 1514 if (adp != vesa_adp) 1515 return ((*prevvidsw->set_win_org)(adp, offset)); 1516 1517 /* if this is a linear frame buffer, do nothing */ 1518 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1519 return (0); 1520 /* XXX */ 1521 if (adp->va_window_gran == 0) 1522 return (1); 1523 1524 x86bios_init_regs(®s); 1525 regs.R_AX = 0x4f05; 1526 regs.R_DX = offset / adp->va_window_gran; 1527 1528 x86bios_intr(®s, 0x10); 1529 1530 if (regs.R_AX != 0x004f) 1531 return (1); 1532 1533 x86bios_init_regs(®s); 1534 regs.R_AX = 0x4f05; 1535 regs.R_BL = 1; 1536 regs.R_DX = offset / adp->va_window_gran; 1537 x86bios_intr(®s, 0x10); 1538 1539 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1540 return (0); /* XXX */ 1541} 1542 1543static int 1544vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1545{ 1546 1547 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1548} 1549 1550static int 1551vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1552{ 1553 1554 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1555} 1556 1557static int 1558vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1559 int celsize, int blink) 1560{ 1561 1562 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1563 blink)); 1564} 1565 1566static int 1567vesa_blank_display(video_adapter_t *adp, int mode) 1568{ 1569 1570 /* XXX: use VESA DPMS */ 1571 return ((*prevvidsw->blank_display)(adp, mode)); 1572} 1573 1574static int 1575vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1576 int prot) 1577{ 1578 1579#if VESA_DEBUG > 0 1580 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%tx\n", 1581 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1582#endif 1583 1584 if ((adp == vesa_adp) && 1585 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1586 /* va_window_size == va_buffer_size/vi_planes */ 1587 /* XXX: is this correct? */ 1588 if (offset > adp->va_window_size - PAGE_SIZE) 1589 return (-1); 1590 *paddr = adp->va_info.vi_buffer + offset; 1591 return (0); 1592 } 1593 return ((*prevvidsw->mmap)(adp, offset, paddr, prot)); 1594} 1595 1596static int 1597vesa_clear(video_adapter_t *adp) 1598{ 1599 1600 return ((*prevvidsw->clear)(adp)); 1601} 1602 1603static int 1604vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1605{ 1606 1607 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1608} 1609 1610static int 1611vesa_bitblt(video_adapter_t *adp,...) 1612{ 1613 1614 /* FIXME */ 1615 return (1); 1616} 1617 1618static int 1619get_palette(video_adapter_t *adp, int base, int count, 1620 u_char *red, u_char *green, u_char *blue, u_char *trans) 1621{ 1622 u_char *r; 1623 u_char *g; 1624 u_char *b; 1625 int bits; 1626 int error; 1627 1628 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256)) 1629 return (1); 1630 if ((base + count) > 256) 1631 return (1); 1632 if ((adp->va_info.vi_flags & V_INFO_NONVGA) == 0 || 1633 (bits = vesa_bios_get_dac()) < 6) 1634 return (1); 1635 1636 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1637 g = r + count; 1638 b = g + count; 1639 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1640 if (error == 0) { 1641 copyout(r, red, count); 1642 copyout(g, green, count); 1643 copyout(b, blue, count); 1644 if (trans != NULL) { 1645 bzero(r, count); 1646 copyout(r, trans, count); 1647 } 1648 } 1649 free(r, M_DEVBUF); 1650 1651 return (error); 1652} 1653 1654static int 1655set_palette(video_adapter_t *adp, int base, int count, 1656 u_char *red, u_char *green, u_char *blue, u_char *trans) 1657{ 1658 u_char *r; 1659 u_char *g; 1660 u_char *b; 1661 int bits; 1662 int error; 1663 1664 if ((base < 0) || (base >= 256) || (base + count > 256)) 1665 return (1); 1666 if ((adp->va_info.vi_flags & V_INFO_NONVGA) == 0 || 1667 (bits = vesa_bios_get_dac()) < 6) 1668 return (1); 1669 1670 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1671 g = r + count; 1672 b = g + count; 1673 copyin(red, r, count); 1674 copyin(green, g, count); 1675 copyin(blue, b, count); 1676 1677 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1678 free(r, M_DEVBUF); 1679 1680 return (error); 1681} 1682 1683static int 1684vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1685{ 1686 int bytes; 1687 1688 if (adp != vesa_adp) 1689 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1690 1691 switch (cmd) { 1692 case FBIO_SETWINORG: /* set frame buffer window origin */ 1693 if (!VESA_MODE(adp->va_mode)) 1694 return (*prevvidsw->ioctl)(adp, cmd, arg); 1695 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1696 1697 case FBIO_SETDISPSTART: /* set display start address */ 1698 if (!VESA_MODE(adp->va_mode)) 1699 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1700 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1701 ((video_display_start_t *)arg)->y)) 1702 return (ENODEV); 1703 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1704 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1705 return (0); 1706 1707 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1708 if (!VESA_MODE(adp->va_mode)) 1709 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1710 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1711 return (ENODEV); 1712 adp->va_line_width = bytes; 1713#if VESA_DEBUG > 1 1714 printf("new line width:%d\n", adp->va_line_width); 1715#endif 1716 return (0); 1717 1718 case FBIO_GETPALETTE: /* get color palette */ 1719 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1720 ((video_color_palette_t *)arg)->count, 1721 ((video_color_palette_t *)arg)->red, 1722 ((video_color_palette_t *)arg)->green, 1723 ((video_color_palette_t *)arg)->blue, 1724 ((video_color_palette_t *)arg)->transparent)) 1725 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1726 return (0); 1727 1728 1729 case FBIO_SETPALETTE: /* set color palette */ 1730 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1731 ((video_color_palette_t *)arg)->count, 1732 ((video_color_palette_t *)arg)->red, 1733 ((video_color_palette_t *)arg)->green, 1734 ((video_color_palette_t *)arg)->blue, 1735 ((video_color_palette_t *)arg)->transparent)) 1736 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1737 return (0); 1738 1739 case FBIOGETCMAP: /* get color palette */ 1740 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1741 ((struct fbcmap *)arg)->count, 1742 ((struct fbcmap *)arg)->red, 1743 ((struct fbcmap *)arg)->green, 1744 ((struct fbcmap *)arg)->blue, NULL)) 1745 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1746 return (0); 1747 1748 case FBIOPUTCMAP: /* set color palette */ 1749 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1750 ((struct fbcmap *)arg)->count, 1751 ((struct fbcmap *)arg)->red, 1752 ((struct fbcmap *)arg)->green, 1753 ((struct fbcmap *)arg)->blue, NULL)) 1754 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1755 return (0); 1756 1757 default: 1758 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1759 } 1760} 1761 1762static int 1763vesa_diag(video_adapter_t *adp, int level) 1764{ 1765 int error; 1766 1767 /* call the previous handler first */ 1768 error = (*prevvidsw->diag)(adp, level); 1769 if (error) 1770 return (error); 1771 1772 if (adp != vesa_adp) 1773 return (1); 1774 1775 if (level <= 0) 1776 return (0); 1777 1778 return (0); 1779} 1780 1781static int 1782vesa_bios_info(int level) 1783{ 1784#if VESA_DEBUG > 1 1785 struct vesa_mode vmode; 1786 int i; 1787#endif 1788 uint16_t vers; 1789 1790 vers = vesa_adp_info->v_version; 1791 1792 if (bootverbose) { 1793 /* general adapter information */ 1794 printf( 1795 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1796 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1797 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1798 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1799 vesa_vmodetab, vesa_adp_info->v_modetable); 1800 1801 /* OEM string */ 1802 if (vesa_oemstr != NULL) 1803 printf("VESA: %s\n", vesa_oemstr); 1804 } 1805 1806 if (level <= 0) 1807 return (0); 1808 1809 if (vers >= 0x0200 && bootverbose) { 1810 /* vender name, product name, product revision */ 1811 printf("VESA: %s %s %s\n", 1812 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1813 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1814 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1815 } 1816 1817#if VESA_DEBUG > 1 1818 /* mode information */ 1819 for (i = 0; 1820 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1821 && (vesa_vmodetab[i] != 0xffff); ++i) { 1822 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1823 continue; 1824 1825 /* print something for diagnostic purpose */ 1826 printf("VESA: mode:0x%03x, flags:0x%04x", 1827 vesa_vmodetab[i], vmode.v_modeattr); 1828 if (vmode.v_modeattr & V_MODEOPTINFO) { 1829 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1830 printf(", G %dx%dx%d %d, ", 1831 vmode.v_width, vmode.v_height, 1832 vmode.v_bpp, vmode.v_planes); 1833 } else { 1834 printf(", T %dx%d, ", 1835 vmode.v_width, vmode.v_height); 1836 } 1837 printf("font:%dx%d, ", 1838 vmode.v_cwidth, vmode.v_cheight); 1839 printf("pages:%d, mem:%d", 1840 vmode.v_ipages + 1, vmode.v_memmodel); 1841 } 1842 if (vmode.v_modeattr & V_MODELFB) { 1843 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1844 vmode.v_lfb, vmode.v_offscreen, 1845 vmode.v_offscreensize*1024); 1846 } 1847 printf("\n"); 1848 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1849 vmode.v_waseg, vmode.v_waattr, 1850 vmode.v_wbseg, vmode.v_wbattr); 1851 printf("size:%dk, gran:%dk\n", 1852 vmode.v_wsize, vmode.v_wgran); 1853 } 1854#endif /* VESA_DEBUG > 1 */ 1855 1856 return (0); 1857} 1858 1859/* module loading */ 1860 1861static int 1862vesa_load(void) 1863{ 1864 int error; 1865 int s; 1866 1867 if (vesa_init_done) 1868 return (0); 1869 1870 /* locate a VGA adapter */ 1871 s = spltty(); 1872 vesa_adp = NULL; 1873 error = vesa_configure(0); 1874 splx(s); 1875 1876 if (error == 0) 1877 vesa_bios_info(bootverbose); 1878 1879 return (error); 1880} 1881 1882static int 1883vesa_unload(void) 1884{ 1885 u_char palette[256*3]; 1886 int error; 1887 int bits; 1888 int s; 1889 1890 /* if the adapter is currently in a VESA mode, don't unload */ 1891 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1892 return (EBUSY); 1893 /* 1894 * FIXME: if there is at least one vty which is in a VESA mode, 1895 * we shouldn't be unloading! XXX 1896 */ 1897 1898 s = spltty(); 1899 if ((error = vesa_unload_ioctl()) == 0) { 1900 if (vesa_adp != NULL) { 1901 if (vesa_adp_info->v_flags & V_DAC8) { 1902 bits = vesa_bios_get_dac(); 1903 if (bits > 6) { 1904 vesa_bios_save_palette(0, 256, 1905 palette, bits); 1906 vesa_bios_set_dac(6); 1907 vesa_bios_load_palette(0, 256, 1908 palette, 6); 1909 } 1910 } 1911 vesa_adp->va_flags &= ~V_ADP_VESA; 1912 vidsw[vesa_adp->va_index] = prevvidsw; 1913 } 1914 } 1915 splx(s); 1916 1917 if (vesa_oemstr != NULL) 1918 free(vesa_oemstr, M_DEVBUF); 1919 if (vesa_venderstr != NULL) 1920 free(vesa_venderstr, M_DEVBUF); 1921 if (vesa_prodstr != NULL) 1922 free(vesa_prodstr, M_DEVBUF); 1923 if (vesa_revstr != NULL) 1924 free(vesa_revstr, M_DEVBUF); 1925 if (vesa_vmode != &vesa_vmode_empty) 1926 free(vesa_vmode, M_DEVBUF); 1927 return (error); 1928} 1929 1930static int 1931vesa_mod_event(module_t mod, int type, void *data) 1932{ 1933 1934 switch (type) { 1935 case MOD_LOAD: 1936 return (vesa_load()); 1937 case MOD_UNLOAD: 1938 return (vesa_unload()); 1939 } 1940 return (EOPNOTSUPP); 1941} 1942 1943static moduledata_t vesa_mod = { 1944 "vesa", 1945 vesa_mod_event, 1946 NULL, 1947}; 1948 1949DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1950MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1951 1952#endif /* VGA_NO_MODE_CHANGE */ 1953