vesa.c revision 233054
139224Sabial/*- 239224Sabial * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 339224Sabial * Copyright (c) 2009-2012 Jung-uk Kim <jkim@FreeBSD.org> 439224Sabial * All rights reserved. 539224Sabial * 639224Sabial * Redistribution and use in source and binary forms, with or without 739224Sabial * modification, are permitted provided that the following conditions 839224Sabial * are met: 939224Sabial * 1. Redistributions of source code must retain the above copyright 1039224Sabial * notice, this list of conditions and the following disclaimer as 1139224Sabial * the first lines of this file unmodified. 1239224Sabial * 2. Redistributions in binary form must reproduce the above copyright 1340813Sabial * notice, this list of conditions and the following disclaimer in the 1439224Sabial * documentation and/or other materials provided with the distribution. 1550479Speter * 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 233054 2012-03-16 23:54:23Z 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#include <sys/sysctl.h> 46 47#include <vm/vm.h> 48#include <vm/vm_extern.h> 49#include <vm/vm_kern.h> 50#include <vm/vm_param.h> 51#include <vm/pmap.h> 52 53#include <machine/pc/bios.h> 54#include <dev/fb/vesa.h> 55 56#include <dev/fb/fbreg.h> 57#include <dev/fb/vgareg.h> 58 59#include <dev/pci/pcivar.h> 60 61#include <isa/isareg.h> 62 63#include <compat/x86bios/x86bios.h> 64 65#define VESA_BIOS_OFFSET 0xc0000 66#define VESA_PALETTE_SIZE (256 * 4) 67#define VESA_VIA_CLE266 "VIA CLE266\r\n" 68 69#ifndef VESA_DEBUG 70#define VESA_DEBUG 0 71#endif 72 73/* VESA video adapter state buffer stub */ 74struct adp_state { 75 int sig; 76#define V_STATE_SIG 0x61736576 77 u_char regs[1]; 78}; 79typedef struct adp_state adp_state_t; 80 81static struct mtx vesa_lock; 82 83static int vesa_state; 84static void *vesa_state_buf; 85static uint32_t vesa_state_buf_offs; 86static ssize_t vesa_state_buf_size; 87 88static u_char *vesa_palette; 89static uint32_t vesa_palette_offs; 90 91static void *vesa_bios; 92static uint32_t vesa_bios_offs; 93static uint32_t vesa_bios_int10; 94static size_t vesa_bios_size; 95 96/* VESA video adapter */ 97static video_adapter_t *vesa_adp; 98 99static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging"); 100static int vesa_shadow_rom; 101TUNABLE_INT("debug.vesa.shadow_rom", &vesa_shadow_rom); 102SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 103 0, "Enable video BIOS shadow"); 104 105/* VESA functions */ 106#if 0 107static int vesa_nop(void); 108#endif 109static int vesa_error(void); 110static vi_probe_t vesa_probe; 111static vi_init_t vesa_init; 112static vi_get_info_t vesa_get_info; 113static vi_query_mode_t vesa_query_mode; 114static vi_set_mode_t vesa_set_mode; 115static vi_save_font_t vesa_save_font; 116static vi_load_font_t vesa_load_font; 117static vi_show_font_t vesa_show_font; 118static vi_save_palette_t vesa_save_palette; 119static vi_load_palette_t vesa_load_palette; 120static vi_set_border_t vesa_set_border; 121static vi_save_state_t vesa_save_state; 122static vi_load_state_t vesa_load_state; 123static vi_set_win_org_t vesa_set_origin; 124static vi_read_hw_cursor_t vesa_read_hw_cursor; 125static vi_set_hw_cursor_t vesa_set_hw_cursor; 126static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 127static vi_blank_display_t vesa_blank_display; 128static vi_mmap_t vesa_mmap; 129static vi_ioctl_t vesa_ioctl; 130static vi_clear_t vesa_clear; 131static vi_fill_rect_t vesa_fill_rect; 132static vi_bitblt_t vesa_bitblt; 133static vi_diag_t vesa_diag; 134static int vesa_bios_info(int level); 135 136static video_switch_t vesavidsw = { 137 vesa_probe, 138 vesa_init, 139 vesa_get_info, 140 vesa_query_mode, 141 vesa_set_mode, 142 vesa_save_font, 143 vesa_load_font, 144 vesa_show_font, 145 vesa_save_palette, 146 vesa_load_palette, 147 vesa_set_border, 148 vesa_save_state, 149 vesa_load_state, 150 vesa_set_origin, 151 vesa_read_hw_cursor, 152 vesa_set_hw_cursor, 153 vesa_set_hw_cursor_shape, 154 vesa_blank_display, 155 vesa_mmap, 156 vesa_ioctl, 157 vesa_clear, 158 vesa_fill_rect, 159 vesa_bitblt, 160 vesa_error, 161 vesa_error, 162 vesa_diag, 163}; 164 165static video_switch_t *prevvidsw; 166 167/* VESA BIOS video modes */ 168#define VESA_MAXMODES 64 169#define EOT (-1) 170#define NA (-2) 171 172#define MODE_TABLE_DELTA 8 173 174static int vesa_vmode_max; 175static video_info_t *vesa_vmode; 176 177static int vesa_init_done; 178static struct vesa_info *vesa_adp_info; 179static u_int16_t *vesa_vmodetab; 180static char *vesa_oemstr; 181static char *vesa_venderstr; 182static char *vesa_prodstr; 183static char *vesa_revstr; 184 185/* local macros and functions */ 186#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 187 188static int int10_set_mode(int mode); 189static int vesa_bios_post(void); 190static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 191static int vesa_bios_set_mode(int mode); 192#if 0 193static int vesa_bios_get_dac(void); 194#endif 195static int vesa_bios_set_dac(int bits); 196static int vesa_bios_save_palette(int start, int colors, u_char *palette, 197 int bits); 198static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 199 u_char *b, int bits); 200static int vesa_bios_load_palette(int start, int colors, u_char *palette, 201 int bits); 202static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 203 u_char *b, int bits); 204#define STATE_SIZE 0 205#define STATE_SAVE 1 206#define STATE_LOAD 2 207static ssize_t vesa_bios_state_buf_size(int); 208static int vesa_bios_save_restore(int code, void *p); 209#ifdef MODE_TABLE_BROKEN 210static int vesa_bios_get_line_length(void); 211#endif 212static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 213#if 0 214static int vesa_bios_get_start(int *x, int *y); 215#endif 216static int vesa_bios_set_start(int x, int y); 217static int vesa_map_gen_mode_num(int type, int color, int mode); 218static int vesa_translate_flags(u_int16_t vflags); 219static int vesa_translate_mmodel(u_int8_t vmodel); 220static int vesa_get_bpscanline(struct vesa_mode *vmode); 221static int vesa_bios_init(void); 222static void vesa_bios_uninit(void); 223static void vesa_clear_modes(video_info_t *info, int color); 224 225#if 0 226static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 227#endif 228 229/* INT 10 BIOS calls */ 230static int 231int10_set_mode(int mode) 232{ 233 x86regs_t regs; 234 235 x86bios_init_regs(®s); 236 regs.R_AL = mode; 237 238 x86bios_intr(®s, 0x10); 239 240 return (0); 241} 242 243static int 244vesa_bios_post(void) 245{ 246 x86regs_t regs; 247 devclass_t dc; 248 device_t *devs; 249 device_t dev; 250 int count, i, is_pci; 251 252 if (x86bios_get_orm(vesa_bios_offs) == NULL) 253 return (1); 254 255 dev = NULL; 256 is_pci = 0; 257 258 /* Find the matching PCI video controller. */ 259 dc = devclass_find("vgapci"); 260 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 261 for (i = 0; i < count; i++) 262 if (device_get_flags(devs[i]) != 0 && 263 x86bios_match_device(vesa_bios_offs, devs[i])) { 264 dev = devs[i]; 265 is_pci = 1; 266 break; 267 } 268 free(devs, M_TEMP); 269 } 270 271 /* Try VGA if a PCI device is not found. */ 272 if (dev == NULL) { 273 dc = devclass_find(VGA_DRIVER_NAME); 274 if (dc != NULL) 275 dev = devclass_get_device(dc, 0); 276 } 277 278 if (bootverbose) 279 printf("%s: calling BIOS POST\n", 280 dev == NULL ? "VESA" : device_get_nameunit(dev)); 281 282 x86bios_init_regs(®s); 283 if (is_pci) { 284 regs.R_AH = pci_get_bus(dev); 285 regs.R_AL = (pci_get_slot(dev) << 3) | 286 (pci_get_function(dev) & 0x07); 287 } 288 regs.R_DL = 0x80; 289 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 290 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 291 292 if (x86bios_get_intr(0x10) == 0) 293 return (1); 294 295 return (0); 296} 297 298/* VESA BIOS calls */ 299static int 300vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 301{ 302 x86regs_t regs; 303 uint32_t offs; 304 void *buf; 305 306 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 307 if (buf == NULL) 308 return (1); 309 310 x86bios_init_regs(®s); 311 regs.R_AX = 0x4f01; 312 regs.R_CX = mode; 313 314 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 315 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 316 317 x86bios_intr(®s, 0x10); 318 319 if (regs.R_AX != 0x004f) { 320 x86bios_free(buf, sizeof(*vmode)); 321 return (1); 322 } 323 324 bcopy(buf, vmode, sizeof(*vmode)); 325 x86bios_free(buf, sizeof(*vmode)); 326 327 return (0); 328} 329 330static int 331vesa_bios_set_mode(int mode) 332{ 333 x86regs_t regs; 334 335 x86bios_init_regs(®s); 336 regs.R_AX = 0x4f02; 337 regs.R_BX = mode; 338 339 x86bios_intr(®s, 0x10); 340 341 return (regs.R_AX != 0x004f); 342} 343 344#if 0 345static int 346vesa_bios_get_dac(void) 347{ 348 x86regs_t regs; 349 350 x86bios_init_regs(®s); 351 regs.R_AX = 0x4f08; 352 regs.R_BL = 1; 353 354 x86bios_intr(®s, 0x10); 355 356 if (regs.R_AX != 0x004f) 357 return (6); 358 359 return (regs.R_BH); 360} 361#endif 362 363static int 364vesa_bios_set_dac(int bits) 365{ 366 x86regs_t regs; 367 368 x86bios_init_regs(®s); 369 regs.R_AX = 0x4f08; 370 /* regs.R_BL = 0; */ 371 regs.R_BH = bits; 372 373 x86bios_intr(®s, 0x10); 374 375 if (regs.R_AX != 0x004f) 376 return (6); 377 378 return (regs.R_BH); 379} 380 381static int 382vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 383{ 384 x86regs_t regs; 385 int i; 386 387 x86bios_init_regs(®s); 388 regs.R_AX = 0x4f09; 389 regs.R_BL = 1; 390 regs.R_CX = colors; 391 regs.R_DX = start; 392 393 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 394 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 395 396 bits = 8 - bits; 397 mtx_lock(&vesa_lock); 398 x86bios_intr(®s, 0x10); 399 if (regs.R_AX != 0x004f) { 400 mtx_unlock(&vesa_lock); 401 return (1); 402 } 403 for (i = 0; i < colors; ++i) { 404 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 405 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 406 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 407 } 408 mtx_unlock(&vesa_lock); 409 410 return (0); 411} 412 413static int 414vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 415 int bits) 416{ 417 x86regs_t regs; 418 int i; 419 420 x86bios_init_regs(®s); 421 regs.R_AX = 0x4f09; 422 regs.R_BL = 1; 423 regs.R_CX = colors; 424 regs.R_DX = start; 425 426 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 427 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 428 429 bits = 8 - bits; 430 mtx_lock(&vesa_lock); 431 x86bios_intr(®s, 0x10); 432 if (regs.R_AX != 0x004f) { 433 mtx_unlock(&vesa_lock); 434 return (1); 435 } 436 for (i = 0; i < colors; ++i) { 437 r[i] = vesa_palette[i * 4 + 2] << bits; 438 g[i] = vesa_palette[i * 4 + 1] << bits; 439 b[i] = vesa_palette[i * 4] << bits; 440 } 441 mtx_unlock(&vesa_lock); 442 443 return (0); 444} 445 446static int 447vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 448{ 449 x86regs_t regs; 450 int i; 451 452 x86bios_init_regs(®s); 453 regs.R_AX = 0x4f09; 454 /* regs.R_BL = 0; */ 455 regs.R_CX = colors; 456 regs.R_DX = start; 457 458 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 459 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 460 461 bits = 8 - bits; 462 mtx_lock(&vesa_lock); 463 for (i = 0; i < colors; ++i) { 464 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 465 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 466 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 467 vesa_palette[i * 4 + 3] = 0; 468 } 469 x86bios_intr(®s, 0x10); 470 mtx_unlock(&vesa_lock); 471 472 return (regs.R_AX != 0x004f); 473} 474 475static int 476vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 477 int bits) 478{ 479 x86regs_t regs; 480 int i; 481 482 x86bios_init_regs(®s); 483 regs.R_AX = 0x4f09; 484 /* regs.R_BL = 0; */ 485 regs.R_CX = colors; 486 regs.R_DX = start; 487 488 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 489 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 490 491 bits = 8 - bits; 492 mtx_lock(&vesa_lock); 493 for (i = 0; i < colors; ++i) { 494 vesa_palette[i * 4] = b[i] >> bits; 495 vesa_palette[i * 4 + 1] = g[i] >> bits; 496 vesa_palette[i * 4 + 2] = r[i] >> bits; 497 vesa_palette[i * 4 + 3] = 0; 498 } 499 x86bios_intr(®s, 0x10); 500 mtx_unlock(&vesa_lock); 501 502 return (regs.R_AX != 0x004f); 503} 504 505static ssize_t 506vesa_bios_state_buf_size(int state) 507{ 508 x86regs_t regs; 509 510 x86bios_init_regs(®s); 511 regs.R_AX = 0x4f04; 512 /* regs.R_DL = STATE_SIZE; */ 513 regs.R_CX = state; 514 515 x86bios_intr(®s, 0x10); 516 517 if (regs.R_AX != 0x004f) 518 return (0); 519 520 return (regs.R_BX * 64); 521} 522 523static int 524vesa_bios_save_restore(int code, void *p) 525{ 526 x86regs_t regs; 527 528 if (code != STATE_SAVE && code != STATE_LOAD) 529 return (1); 530 531 x86bios_init_regs(®s); 532 regs.R_AX = 0x4f04; 533 regs.R_DL = code; 534 regs.R_CX = vesa_state; 535 536 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 537 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 538 539 mtx_lock(&vesa_lock); 540 switch (code) { 541 case STATE_SAVE: 542 x86bios_intr(®s, 0x10); 543 bcopy(vesa_state_buf, p, vesa_state_buf_size); 544 break; 545 case STATE_LOAD: 546 bcopy(p, vesa_state_buf, vesa_state_buf_size); 547 x86bios_intr(®s, 0x10); 548 break; 549 } 550 mtx_unlock(&vesa_lock); 551 552 return (regs.R_AX != 0x004f); 553} 554 555#ifdef MODE_TABLE_BROKEN 556static int 557vesa_bios_get_line_length(void) 558{ 559 x86regs_t regs; 560 561 x86bios_init_regs(®s); 562 regs.R_AX = 0x4f06; 563 regs.R_BL = 1; 564 565 x86bios_intr(®s, 0x10); 566 567 if (regs.R_AX != 0x004f) 568 return (-1); 569 570 return (regs.R_BX); 571} 572#endif 573 574static int 575vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 576{ 577 x86regs_t regs; 578 579 x86bios_init_regs(®s); 580 regs.R_AX = 0x4f06; 581 /* regs.R_BL = 0; */ 582 regs.R_CX = pixel; 583 584 x86bios_intr(®s, 0x10); 585 586#if VESA_DEBUG > 1 587 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 588#endif 589 if (regs.R_AX != 0x004f) 590 return (-1); 591 592 if (bytes != NULL) 593 *bytes = regs.R_BX; 594 if (lines != NULL) 595 *lines = regs.R_DX; 596 597 return (0); 598} 599 600#if 0 601static int 602vesa_bios_get_start(int *x, int *y) 603{ 604 x86regs_t regs; 605 606 x86bios_init_regs(®s); 607 regs.R_AX = 0x4f07; 608 regs.R_BL = 1; 609 610 x86bios_intr(®s, 0x10); 611 612 if (regs.R_AX != 0x004f) 613 return (-1); 614 615 *x = regs.R_CX; 616 *y = regs.R_DX; 617 618 return (0); 619} 620#endif 621 622static int 623vesa_bios_set_start(int x, int y) 624{ 625 x86regs_t regs; 626 627 x86bios_init_regs(®s); 628 regs.R_AX = 0x4f07; 629 regs.R_BL = 0x80; 630 regs.R_CX = x; 631 regs.R_DX = y; 632 633 x86bios_intr(®s, 0x10); 634 635 return (regs.R_AX != 0x004f); 636} 637 638/* map a generic video mode to a known mode */ 639static int 640vesa_map_gen_mode_num(int type, int color, int mode) 641{ 642 static struct { 643 int from; 644 int to; 645 } mode_map[] = { 646 { M_TEXT_132x25, M_VESA_C132x25 }, 647 { M_TEXT_132x43, M_VESA_C132x43 }, 648 { M_TEXT_132x50, M_VESA_C132x50 }, 649 { M_TEXT_132x60, M_VESA_C132x60 }, 650 }; 651 int i; 652 653 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 654 if (mode_map[i].from == mode) 655 return (mode_map[i].to); 656 } 657 return (mode); 658} 659 660static int 661vesa_translate_flags(u_int16_t vflags) 662{ 663 static struct { 664 u_int16_t mask; 665 int set; 666 int reset; 667 } ftable[] = { 668 { V_MODECOLOR, V_INFO_COLOR, 0 }, 669 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 670 { V_MODELFB, V_INFO_LINEAR, 0 }, 671 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 672 }; 673 int flags; 674 int i; 675 676 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 677 flags |= (vflags & ftable[i].mask) ? 678 ftable[i].set : ftable[i].reset; 679 } 680 return (flags); 681} 682 683static int 684vesa_translate_mmodel(u_int8_t vmodel) 685{ 686 static struct { 687 u_int8_t vmodel; 688 int mmodel; 689 } mtable[] = { 690 { V_MMTEXT, V_INFO_MM_TEXT }, 691 { V_MMCGA, V_INFO_MM_CGA }, 692 { V_MMHGC, V_INFO_MM_HGC }, 693 { V_MMEGA, V_INFO_MM_PLANAR }, 694 { V_MMPACKED, V_INFO_MM_PACKED }, 695 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 696 }; 697 int i; 698 699 for (i = 0; mtable[i].mmodel >= 0; ++i) { 700 if (mtable[i].vmodel == vmodel) 701 return (mtable[i].mmodel); 702 } 703 return (V_INFO_MM_OTHER); 704} 705 706static int 707vesa_get_bpscanline(struct vesa_mode *vmode) 708{ 709 int bpsl; 710 711 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 712 /* Find the minimum length. */ 713 switch (vmode->v_bpp / vmode->v_planes) { 714 case 1: 715 bpsl = vmode->v_width / 8; 716 break; 717 case 2: 718 bpsl = vmode->v_width / 4; 719 break; 720 case 4: 721 bpsl = vmode->v_width / 2; 722 break; 723 default: 724 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 725 bpsl /= vmode->v_planes; 726 break; 727 } 728 729 /* Use VBE 3.0 information if it looks sane. */ 730 if ((vmode->v_modeattr & V_MODELFB) != 0 && 731 vesa_adp_info->v_version >= 0x0300 && 732 vmode->v_linbpscanline > bpsl) 733 return (vmode->v_linbpscanline); 734 735 /* Return the minimum if the mode table looks absurd. */ 736 if (vmode->v_bpscanline < bpsl) 737 return (bpsl); 738 } 739 740 return (vmode->v_bpscanline); 741} 742 743#define VESA_MAXSTR 256 744 745#define VESA_STRCPY(dst, src) do { \ 746 char *str; \ 747 int i; \ 748 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 749 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 750 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 751 dst[i] = str[i]; \ 752 dst[i] = '\0'; \ 753} while (0) 754 755static int 756vesa_bios_init(void) 757{ 758 struct vesa_mode vmode; 759 struct vesa_info *buf; 760 video_info_t *p; 761 x86regs_t regs; 762 size_t bsize; 763 size_t msize; 764 void *vmbuf; 765 uint8_t *vbios; 766 uint32_t offs; 767 uint16_t vers; 768 int is_via_cle266; 769 int modes; 770 int i; 771 772 if (vesa_init_done) 773 return (0); 774 775 vesa_bios_offs = VESA_BIOS_OFFSET; 776 777 /* 778 * If the VBE real mode interrupt vector is not found, try BIOS POST. 779 */ 780 vesa_bios_int10 = x86bios_get_intr(0x10); 781 if (vesa_bios_int10 == 0) { 782 if (vesa_bios_post() != 0) 783 return (1); 784 vesa_bios_int10 = x86bios_get_intr(0x10); 785 if (vesa_bios_int10 == 0) 786 return (1); 787 } 788 789 /* 790 * Shadow video ROM. 791 */ 792 offs = vesa_bios_int10; 793 if (vesa_shadow_rom) { 794 vbios = x86bios_get_orm(vesa_bios_offs); 795 if (vbios != NULL) { 796 vesa_bios_size = vbios[2] * 512; 797 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 798 (vesa_bios_int10 & 0xffff0000) && 799 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 800 vesa_bios = x86bios_alloc(&vesa_bios_offs, 801 vesa_bios_size, M_WAITOK); 802 bcopy(vbios, vesa_bios, vesa_bios_size); 803 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 804 (vesa_bios_int10 & 0xffff); 805 x86bios_set_intr(0x10, offs); 806 } 807 } 808 if (vesa_bios == NULL) 809 printf("VESA: failed to shadow video ROM\n"); 810 } 811 if (bootverbose) 812 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 813 (offs >> 16) & 0xffff, offs & 0xffff); 814 815 x86bios_init_regs(®s); 816 regs.R_AX = 0x4f00; 817 818 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 819 820 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 821 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 822 823 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 824 x86bios_intr(®s, 0x10); 825 826 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 827 goto fail; 828 829 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 830 bcopy(vmbuf, buf, sizeof(*buf)); 831 832 if (bootverbose) { 833 printf("VESA: information block\n"); 834 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 835 } 836 837 vers = buf->v_version = le16toh(buf->v_version); 838 buf->v_oemstr = le32toh(buf->v_oemstr); 839 buf->v_flags = le32toh(buf->v_flags); 840 buf->v_modetable = le32toh(buf->v_modetable); 841 buf->v_memsize = le16toh(buf->v_memsize); 842 buf->v_revision = le16toh(buf->v_revision); 843 buf->v_venderstr = le32toh(buf->v_venderstr); 844 buf->v_prodstr = le32toh(buf->v_prodstr); 845 buf->v_revstr = le32toh(buf->v_revstr); 846 847 if (vers < 0x0102) { 848 printf("VESA: VBE version %d.%d is not supported; " 849 "version 1.2 or later is required.\n", 850 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 851 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 852 goto fail; 853 } 854 855 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 856 if (vers >= 0x0200) { 857 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 858 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 859 VESA_STRCPY(vesa_revstr, buf->v_revstr); 860 } 861 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 862 sizeof(VESA_VIA_CLE266)) == 0; 863 864 if (buf->v_modetable == 0) 865 goto fail; 866 867 msize = (size_t)buf->v_memsize * 64 * 1024; 868 869 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 870 871 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 872 (vesa_vmodetab[i] != 0xffff); ++i) { 873 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 874 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 875 continue; 876 877 vmode.v_modeattr = le16toh(vmode.v_modeattr); 878 vmode.v_wgran = le16toh(vmode.v_wgran); 879 vmode.v_wsize = le16toh(vmode.v_wsize); 880 vmode.v_waseg = le16toh(vmode.v_waseg); 881 vmode.v_wbseg = le16toh(vmode.v_wbseg); 882 vmode.v_posfunc = le32toh(vmode.v_posfunc); 883 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 884 vmode.v_width = le16toh(vmode.v_width); 885 vmode.v_height = le16toh(vmode.v_height); 886 vmode.v_lfb = le32toh(vmode.v_lfb); 887 vmode.v_offscreen = le32toh(vmode.v_offscreen); 888 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 889 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 890 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 891 892 /* reject unsupported modes */ 893#if 0 894 if ((vmode.v_modeattr & 895 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 896 (V_MODESUPP | V_MODEOPTINFO)) 897 continue; 898#else 899 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 900#if VESA_DEBUG > 1 901 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 902 " attr = %x\n", 903 vmode.v_modeattr & V_MODEGRAPHICS ? 904 "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 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 913 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 914 bsize *= vmode.v_planes; 915 916 /* Does it have enough memory to support this mode? */ 917 if (msize < bsize) { 918#if VESA_DEBUG > 1 919 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 920 " attr = %x, not enough memory\n", 921 vmode.v_modeattr & V_MODEGRAPHICS ? 922 "graphics" : "text", 923 vmode.v_width, vmode.v_height, vmode.v_bpp, 924 vmode.v_modeattr); 925#endif 926 continue; 927 } 928 929 /* expand the array if necessary */ 930 if (modes >= vesa_vmode_max) { 931 vesa_vmode_max += MODE_TABLE_DELTA; 932 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 933 M_DEVBUF, M_WAITOK); 934#if VESA_DEBUG > 1 935 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 936 modes, vesa_vmode_max); 937#endif 938 if (modes > 0) { 939 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 940 free(vesa_vmode, M_DEVBUF); 941 } 942 vesa_vmode = p; 943 } 944 945#if VESA_DEBUG > 1 946 printf("Found VESA %s mode: %d x %d x %d bpp\n", 947 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 948 vmode.v_width, vmode.v_height, vmode.v_bpp); 949#endif 950 if (is_via_cle266) { 951 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 952 vmode.v_width &= 0xff; 953 vmode.v_waseg = 0xb8000 >> 4; 954 } 955 } 956 957 /* copy some fields */ 958 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 959 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 960 vesa_vmode[modes].vi_width = vmode.v_width; 961 vesa_vmode[modes].vi_height = vmode.v_height; 962 vesa_vmode[modes].vi_depth = vmode.v_bpp; 963 vesa_vmode[modes].vi_planes = vmode.v_planes; 964 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 965 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 966 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 967 /* XXX window B */ 968 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 969 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 970 if (vmode.v_modeattr & V_MODELFB) 971 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 972 vesa_vmode[modes].vi_buffer_size = bsize; 973 vesa_vmode[modes].vi_mem_model = 974 vesa_translate_mmodel(vmode.v_memmodel); 975 switch (vesa_vmode[modes].vi_mem_model) { 976 case V_INFO_MM_DIRECT: 977 if ((vmode.v_modeattr & V_MODELFB) != 0 && 978 vers >= 0x0300) { 979 vesa_vmode[modes].vi_pixel_fields[0] = 980 vmode.v_linredfieldpos; 981 vesa_vmode[modes].vi_pixel_fields[1] = 982 vmode.v_lingreenfieldpos; 983 vesa_vmode[modes].vi_pixel_fields[2] = 984 vmode.v_linbluefieldpos; 985 vesa_vmode[modes].vi_pixel_fields[3] = 986 vmode.v_linresfieldpos; 987 vesa_vmode[modes].vi_pixel_fsizes[0] = 988 vmode.v_linredmasksize; 989 vesa_vmode[modes].vi_pixel_fsizes[1] = 990 vmode.v_lingreenmasksize; 991 vesa_vmode[modes].vi_pixel_fsizes[2] = 992 vmode.v_linbluemasksize; 993 vesa_vmode[modes].vi_pixel_fsizes[3] = 994 vmode.v_linresmasksize; 995 } else { 996 vesa_vmode[modes].vi_pixel_fields[0] = 997 vmode.v_redfieldpos; 998 vesa_vmode[modes].vi_pixel_fields[1] = 999 vmode.v_greenfieldpos; 1000 vesa_vmode[modes].vi_pixel_fields[2] = 1001 vmode.v_bluefieldpos; 1002 vesa_vmode[modes].vi_pixel_fields[3] = 1003 vmode.v_resfieldpos; 1004 vesa_vmode[modes].vi_pixel_fsizes[0] = 1005 vmode.v_redmasksize; 1006 vesa_vmode[modes].vi_pixel_fsizes[1] = 1007 vmode.v_greenmasksize; 1008 vesa_vmode[modes].vi_pixel_fsizes[2] = 1009 vmode.v_bluemasksize; 1010 vesa_vmode[modes].vi_pixel_fsizes[3] = 1011 vmode.v_resmasksize; 1012 } 1013 /* FALLTHROUGH */ 1014 case V_INFO_MM_PACKED: 1015 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1016 break; 1017 } 1018 vesa_vmode[modes].vi_flags = 1019 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1020 1021 ++modes; 1022 } 1023 vesa_vmode[modes].vi_mode = EOT; 1024 1025 if (bootverbose) 1026 printf("VESA: %d mode(s) found\n", modes); 1027 1028 if (modes == 0) 1029 goto fail; 1030 1031 x86bios_free(vmbuf, sizeof(*buf)); 1032 1033 /* Probe supported save/restore states. */ 1034 for (i = 0; i < 4; i++) 1035 if (vesa_bios_state_buf_size(1 << i) > 0) 1036 vesa_state |= 1 << i; 1037 if (vesa_state != 0) 1038 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1039 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1040 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1041 if (vesa_state_buf_size > 0) { 1042 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1043 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1044 } 1045 1046 return (0); 1047 1048fail: 1049 x86bios_free(vmbuf, sizeof(buf)); 1050 vesa_bios_uninit(); 1051 return (1); 1052} 1053 1054static void 1055vesa_bios_uninit(void) 1056{ 1057 1058 if (vesa_bios != NULL) { 1059 x86bios_set_intr(0x10, vesa_bios_int10); 1060 vesa_bios_offs = VESA_BIOS_OFFSET; 1061 x86bios_free(vesa_bios, vesa_bios_size); 1062 vesa_bios = NULL; 1063 } 1064 if (vesa_adp_info != NULL) { 1065 free(vesa_adp_info, M_DEVBUF); 1066 vesa_adp_info = NULL; 1067 } 1068 if (vesa_oemstr != NULL) { 1069 free(vesa_oemstr, M_DEVBUF); 1070 vesa_oemstr = NULL; 1071 } 1072 if (vesa_venderstr != NULL) { 1073 free(vesa_venderstr, M_DEVBUF); 1074 vesa_venderstr = NULL; 1075 } 1076 if (vesa_prodstr != NULL) { 1077 free(vesa_prodstr, M_DEVBUF); 1078 vesa_prodstr = NULL; 1079 } 1080 if (vesa_revstr != NULL) { 1081 free(vesa_revstr, M_DEVBUF); 1082 vesa_revstr = NULL; 1083 } 1084 if (vesa_vmode != NULL) { 1085 free(vesa_vmode, M_DEVBUF); 1086 vesa_vmode = NULL; 1087 } 1088 if (vesa_palette != NULL) { 1089 x86bios_free(vesa_palette, 1090 VESA_PALETTE_SIZE + vesa_state_buf_size); 1091 vesa_palette = NULL; 1092 } 1093} 1094 1095static void 1096vesa_clear_modes(video_info_t *info, int color) 1097{ 1098 while (info->vi_mode != EOT) { 1099 if ((info->vi_flags & V_INFO_COLOR) != color) 1100 info->vi_mode = NA; 1101 ++info; 1102 } 1103} 1104 1105/* entry points */ 1106 1107static int 1108vesa_configure(int flags) 1109{ 1110 video_adapter_t *adp; 1111 int adapters; 1112 int error; 1113 int i; 1114 1115 if (vesa_init_done) 1116 return (0); 1117 if (flags & VIO_PROBE_ONLY) 1118 return (0); 1119 1120 /* 1121 * If the VESA module has already been loaded, abort loading 1122 * the module this time. 1123 */ 1124 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1125 if (adp->va_flags & V_ADP_VESA) 1126 return (ENXIO); 1127 if (adp->va_type == KD_VGA) 1128 break; 1129 } 1130 1131 /* 1132 * The VGA adapter is not found. This is because either 1133 * 1) the VGA driver has not been initialized, or 2) the VGA card 1134 * is not present. If 1) is the case, we shall defer 1135 * initialization for now and try again later. 1136 */ 1137 if (adp == NULL) { 1138 vga_sub_configure = vesa_configure; 1139 return (ENODEV); 1140 } 1141 1142 /* count number of registered adapters */ 1143 for (++i; vid_get_adapter(i) != NULL; ++i) 1144 ; 1145 adapters = i; 1146 1147 /* call VESA BIOS */ 1148 vesa_adp = adp; 1149 if (vesa_bios_init()) { 1150 vesa_adp = NULL; 1151 return (ENXIO); 1152 } 1153 vesa_adp->va_flags |= V_ADP_VESA; 1154 1155 /* remove conflicting modes if we have more than one adapter */ 1156 if (adapters > 1) { 1157 vesa_clear_modes(vesa_vmode, 1158 (vesa_adp->va_flags & V_ADP_COLOR) ? 1159 V_INFO_COLOR : 0); 1160 } 1161 1162 if ((error = vesa_load_ioctl()) == 0) { 1163 prevvidsw = vidsw[vesa_adp->va_index]; 1164 vidsw[vesa_adp->va_index] = &vesavidsw; 1165 vesa_init_done = TRUE; 1166 } else { 1167 vesa_adp = NULL; 1168 return (error); 1169 } 1170 1171 return (0); 1172} 1173 1174#if 0 1175static int 1176vesa_nop(void) 1177{ 1178 1179 return (0); 1180} 1181#endif 1182 1183static int 1184vesa_error(void) 1185{ 1186 1187 return (1); 1188} 1189 1190static int 1191vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1192{ 1193 1194 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1195} 1196 1197static int 1198vesa_init(int unit, video_adapter_t *adp, int flags) 1199{ 1200 1201 return ((*prevvidsw->init)(unit, adp, flags)); 1202} 1203 1204static int 1205vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1206{ 1207 int i; 1208 1209 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1210 return (0); 1211 1212 if (adp != vesa_adp) 1213 return (1); 1214 1215 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1216 vesa_adp->va_flags & V_ADP_COLOR, mode); 1217 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1218 if (vesa_vmode[i].vi_mode == NA) 1219 continue; 1220 if (vesa_vmode[i].vi_mode == mode) { 1221 *info = vesa_vmode[i]; 1222 return (0); 1223 } 1224 } 1225 return (1); 1226} 1227 1228static int 1229vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1230{ 1231 int i; 1232 1233 if ((*prevvidsw->query_mode)(adp, info) == 0) 1234 return (0); 1235 if (adp != vesa_adp) 1236 return (ENODEV); 1237 1238 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1239 if ((info->vi_width != 0) 1240 && (info->vi_width != vesa_vmode[i].vi_width)) 1241 continue; 1242 if ((info->vi_height != 0) 1243 && (info->vi_height != vesa_vmode[i].vi_height)) 1244 continue; 1245 if ((info->vi_cwidth != 0) 1246 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1247 continue; 1248 if ((info->vi_cheight != 0) 1249 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1250 continue; 1251 if ((info->vi_depth != 0) 1252 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1253 continue; 1254 if ((info->vi_planes != 0) 1255 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1256 continue; 1257 /* pixel format, memory model */ 1258 if ((info->vi_flags != 0) 1259 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1260 continue; 1261 *info = vesa_vmode[i]; 1262 return (0); 1263 } 1264 return (ENODEV); 1265} 1266 1267static int 1268vesa_set_mode(video_adapter_t *adp, int mode) 1269{ 1270 video_info_t info; 1271 1272 if (adp != vesa_adp) 1273 return ((*prevvidsw->set_mode)(adp, mode)); 1274 1275 mode = vesa_map_gen_mode_num(adp->va_type, 1276 adp->va_flags & V_ADP_COLOR, mode); 1277#if VESA_DEBUG > 0 1278 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1279 adp->va_mode, adp->va_mode, mode, mode); 1280#endif 1281 /* 1282 * If the current mode is a VESA mode and the new mode is not, 1283 * restore the state of the adapter first by setting one of the 1284 * standard VGA mode, so that non-standard, extended SVGA registers 1285 * are set to the state compatible with the standard VGA modes. 1286 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1287 * the new mode correctly. 1288 */ 1289 if (VESA_MODE(adp->va_mode)) { 1290 if (!VESA_MODE(mode) && 1291 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1292 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1293 vesa_bios_set_dac(6); 1294 adp->va_flags &= ~V_ADP_DAC8; 1295 } 1296 int10_set_mode(adp->va_initial_bios_mode); 1297 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1298 pmap_unmapdev(adp->va_buffer, 1299 vesa_adp_info->v_memsize * 64 * 1024); 1300 /* 1301 * Once (*prevvidsw->get_info)() succeeded, 1302 * (*prevvidsw->set_mode)() below won't fail... 1303 */ 1304 } 1305 } 1306 1307 /* we may not need to handle this mode after all... */ 1308 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1309 return (0); 1310 1311 /* is the new mode supported? */ 1312 if (vesa_get_info(adp, mode, &info)) 1313 return (1); 1314 /* assert(VESA_MODE(mode)); */ 1315 1316#if VESA_DEBUG > 0 1317 printf("VESA: about to set a VESA mode...\n"); 1318#endif 1319 /* don't use the linear frame buffer for text modes. XXX */ 1320 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1321 info.vi_flags &= ~V_INFO_LINEAR; 1322 1323 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1324 mode |= 0x4000; 1325 if (vesa_bios_set_mode(mode | 0x8000)) 1326 return (1); 1327 1328 /* Palette format is reset by the above VBE function call. */ 1329 adp->va_flags &= ~V_ADP_DAC8; 1330 1331 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1332 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1333 vesa_bios_set_dac(8) > 6) 1334 adp->va_flags |= V_ADP_DAC8; 1335 1336 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1337 pmap_unmapdev(adp->va_buffer, 1338 vesa_adp_info->v_memsize * 64 * 1024); 1339 1340#if VESA_DEBUG > 0 1341 printf("VESA: mode set!\n"); 1342#endif 1343 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1344 vesa_adp->va_flags &= ~V_ADP_COLOR; 1345 vesa_adp->va_flags |= 1346 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1347 vesa_adp->va_crtc_addr = 1348 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1349 1350 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1351 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1352 vesa_adp->va_line_width /= info.vi_planes; 1353 1354#ifdef MODE_TABLE_BROKEN 1355 /* If VBE function returns bigger bytes per scan line, use it. */ 1356 { 1357 int bpsl = vesa_bios_get_line_length(); 1358 if (bpsl > vesa_adp->va_line_width) { 1359 vesa_adp->va_line_width = bpsl; 1360 info.vi_buffer_size = bpsl * info.vi_height; 1361 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1362 info.vi_buffer_size *= info.vi_planes; 1363 } 1364 } 1365#endif 1366 1367 if (info.vi_flags & V_INFO_LINEAR) { 1368#if VESA_DEBUG > 1 1369 printf("VESA: setting up LFB\n"); 1370#endif 1371 vesa_adp->va_buffer = 1372 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1373 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING); 1374 vesa_adp->va_window = vesa_adp->va_buffer; 1375 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1376 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1377 } else { 1378 vesa_adp->va_buffer = 0; 1379 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1380 vesa_adp->va_window_size = info.vi_window_size; 1381 vesa_adp->va_window_gran = info.vi_window_gran; 1382 } 1383 vesa_adp->va_buffer_size = info.vi_buffer_size; 1384 vesa_adp->va_window_orig = 0; 1385 vesa_adp->va_disp_start.x = 0; 1386 vesa_adp->va_disp_start.y = 0; 1387#if VESA_DEBUG > 0 1388 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1389 info.vi_width, vesa_adp->va_line_width); 1390#endif 1391 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1392 1393 /* move hardware cursor out of the way */ 1394 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1395 1396 return (0); 1397} 1398 1399static int 1400vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1401 u_char *data, int ch, int count) 1402{ 1403 1404 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1405 ch, count)); 1406} 1407 1408static int 1409vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1410 u_char *data, int ch, int count) 1411{ 1412 1413 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1414 ch, count)); 1415} 1416 1417static int 1418vesa_show_font(video_adapter_t *adp, int page) 1419{ 1420 1421 return ((*prevvidsw->show_font)(adp, page)); 1422} 1423 1424static int 1425vesa_save_palette(video_adapter_t *adp, u_char *palette) 1426{ 1427 int bits; 1428 1429 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1430 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1431 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1432 return (0); 1433 } 1434 1435 return ((*prevvidsw->save_palette)(adp, palette)); 1436} 1437 1438static int 1439vesa_load_palette(video_adapter_t *adp, u_char *palette) 1440{ 1441 int bits; 1442 1443 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1444 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1445 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1446 return (0); 1447 } 1448 1449 return ((*prevvidsw->load_palette)(adp, palette)); 1450} 1451 1452static int 1453vesa_set_border(video_adapter_t *adp, int color) 1454{ 1455 1456 return ((*prevvidsw->set_border)(adp, color)); 1457} 1458 1459static int 1460vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1461{ 1462 1463 if (adp != vesa_adp || vesa_state_buf_size == 0) 1464 return ((*prevvidsw->save_state)(adp, p, size)); 1465 1466 if (size == 0) 1467 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1468 if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1469 return (EINVAL); 1470 1471 ((adp_state_t *)p)->sig = V_STATE_SIG; 1472 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1473 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1474} 1475 1476static int 1477vesa_load_state(video_adapter_t *adp, void *p) 1478{ 1479 int mode; 1480 1481 if (adp != vesa_adp) 1482 return ((*prevvidsw->load_state)(adp, p)); 1483 1484 /* Try BIOS POST to restore a sane state. */ 1485 (void)vesa_bios_post(); 1486 mode = adp->va_mode; 1487 (void)vesa_set_mode(adp, adp->va_initial_mode); 1488 if (mode != adp->va_initial_mode) 1489 (void)vesa_set_mode(adp, mode); 1490 1491 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1492 return ((*prevvidsw->load_state)(adp, p)); 1493 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1494} 1495 1496#if 0 1497static int 1498vesa_get_origin(video_adapter_t *adp, off_t *offset) 1499{ 1500 x86regs_t regs; 1501 1502 x86bios_init_regs(®s); 1503 regs.R_AX = 0x4f05; 1504 regs.R_BL = 0x10; 1505 1506 x86bios_intr(®s, 0x10); 1507 1508 if (regs.R_AX != 0x004f) 1509 return (1); 1510 *offset = regs.DX * adp->va_window_gran; 1511 1512 return (0); 1513} 1514#endif 1515 1516static int 1517vesa_set_origin(video_adapter_t *adp, off_t offset) 1518{ 1519 x86regs_t regs; 1520 1521 /* 1522 * This function should return as quickly as possible to 1523 * maintain good performance of the system. For this reason, 1524 * error checking is kept minimal and let the VESA BIOS to 1525 * detect error. 1526 */ 1527 if (adp != vesa_adp) 1528 return ((*prevvidsw->set_win_org)(adp, offset)); 1529 1530 /* if this is a linear frame buffer, do nothing */ 1531 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1532 return (0); 1533 /* XXX */ 1534 if (adp->va_window_gran == 0) 1535 return (1); 1536 1537 x86bios_init_regs(®s); 1538 regs.R_AX = 0x4f05; 1539 regs.R_DX = offset / adp->va_window_gran; 1540 1541 x86bios_intr(®s, 0x10); 1542 1543 if (regs.R_AX != 0x004f) 1544 return (1); 1545 1546 x86bios_init_regs(®s); 1547 regs.R_AX = 0x4f05; 1548 regs.R_BL = 1; 1549 regs.R_DX = offset / adp->va_window_gran; 1550 x86bios_intr(®s, 0x10); 1551 1552 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1553 return (0); /* XXX */ 1554} 1555 1556static int 1557vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1558{ 1559 1560 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1561} 1562 1563static int 1564vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1565{ 1566 1567 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1568} 1569 1570static int 1571vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1572 int celsize, int blink) 1573{ 1574 1575 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1576 blink)); 1577} 1578 1579static int 1580vesa_blank_display(video_adapter_t *adp, int mode) 1581{ 1582 1583 /* XXX: use VESA DPMS */ 1584 return ((*prevvidsw->blank_display)(adp, mode)); 1585} 1586 1587static int 1588vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1589 int prot, vm_memattr_t *memattr) 1590{ 1591 1592#if VESA_DEBUG > 0 1593 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1594 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1595#endif 1596 1597 if ((adp == vesa_adp) && 1598 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1599 /* va_window_size == va_buffer_size/vi_planes */ 1600 /* XXX: is this correct? */ 1601 if (offset > adp->va_window_size - PAGE_SIZE) 1602 return (-1); 1603 *paddr = adp->va_info.vi_buffer + offset; 1604 return (0); 1605 } 1606 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1607} 1608 1609static int 1610vesa_clear(video_adapter_t *adp) 1611{ 1612 1613 return ((*prevvidsw->clear)(adp)); 1614} 1615 1616static int 1617vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1618{ 1619 1620 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1621} 1622 1623static int 1624vesa_bitblt(video_adapter_t *adp,...) 1625{ 1626 1627 /* FIXME */ 1628 return (1); 1629} 1630 1631static int 1632get_palette(video_adapter_t *adp, int base, int count, 1633 u_char *red, u_char *green, u_char *blue, u_char *trans) 1634{ 1635 u_char *r; 1636 u_char *g; 1637 u_char *b; 1638 int bits; 1639 int error; 1640 1641 if (base < 0 || base >= 256 || count < 0 || count > 256) 1642 return (1); 1643 if ((base + count) > 256) 1644 return (1); 1645 if (!VESA_MODE(adp->va_mode)) 1646 return (1); 1647 1648 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1649 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1650 g = r + count; 1651 b = g + count; 1652 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1653 if (error == 0) { 1654 copyout(r, red, count); 1655 copyout(g, green, count); 1656 copyout(b, blue, count); 1657 if (trans != NULL) { 1658 bzero(r, count); 1659 copyout(r, trans, count); 1660 } 1661 } 1662 free(r, M_DEVBUF); 1663 1664 return (error); 1665} 1666 1667static int 1668set_palette(video_adapter_t *adp, int base, int count, 1669 u_char *red, u_char *green, u_char *blue, u_char *trans) 1670{ 1671 u_char *r; 1672 u_char *g; 1673 u_char *b; 1674 int bits; 1675 int error; 1676 1677 if (base < 0 || base >= 256 || count < 0 || count > 256) 1678 return (1); 1679 if ((base + count) > 256) 1680 return (1); 1681 if (!VESA_MODE(adp->va_mode)) 1682 return (1); 1683 1684 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1685 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1686 g = r + count; 1687 b = g + count; 1688 copyin(red, r, count); 1689 copyin(green, g, count); 1690 copyin(blue, b, count); 1691 1692 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1693 free(r, M_DEVBUF); 1694 1695 return (error); 1696} 1697 1698static int 1699vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1700{ 1701 int bytes; 1702 1703 if (adp != vesa_adp) 1704 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1705 1706 switch (cmd) { 1707 case FBIO_SETWINORG: /* set frame buffer window origin */ 1708 if (!VESA_MODE(adp->va_mode)) 1709 return (*prevvidsw->ioctl)(adp, cmd, arg); 1710 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1711 1712 case FBIO_SETDISPSTART: /* set display start address */ 1713 if (!VESA_MODE(adp->va_mode)) 1714 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1715 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1716 ((video_display_start_t *)arg)->y)) 1717 return (ENODEV); 1718 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1719 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1720 return (0); 1721 1722 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1723 if (!VESA_MODE(adp->va_mode)) 1724 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1725 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1726 return (ENODEV); 1727 adp->va_line_width = bytes; 1728#if VESA_DEBUG > 1 1729 printf("new line width:%d\n", adp->va_line_width); 1730#endif 1731 return (0); 1732 1733 case FBIO_GETPALETTE: /* get color palette */ 1734 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1735 ((video_color_palette_t *)arg)->count, 1736 ((video_color_palette_t *)arg)->red, 1737 ((video_color_palette_t *)arg)->green, 1738 ((video_color_palette_t *)arg)->blue, 1739 ((video_color_palette_t *)arg)->transparent)) 1740 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1741 return (0); 1742 1743 1744 case FBIO_SETPALETTE: /* set color palette */ 1745 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1746 ((video_color_palette_t *)arg)->count, 1747 ((video_color_palette_t *)arg)->red, 1748 ((video_color_palette_t *)arg)->green, 1749 ((video_color_palette_t *)arg)->blue, 1750 ((video_color_palette_t *)arg)->transparent)) 1751 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1752 return (0); 1753 1754 case FBIOGETCMAP: /* get color palette */ 1755 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1756 ((struct fbcmap *)arg)->count, 1757 ((struct fbcmap *)arg)->red, 1758 ((struct fbcmap *)arg)->green, 1759 ((struct fbcmap *)arg)->blue, NULL)) 1760 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1761 return (0); 1762 1763 case FBIOPUTCMAP: /* set color palette */ 1764 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1765 ((struct fbcmap *)arg)->count, 1766 ((struct fbcmap *)arg)->red, 1767 ((struct fbcmap *)arg)->green, 1768 ((struct fbcmap *)arg)->blue, NULL)) 1769 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1770 return (0); 1771 1772 default: 1773 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1774 } 1775} 1776 1777static int 1778vesa_diag(video_adapter_t *adp, int level) 1779{ 1780 int error; 1781 1782 /* call the previous handler first */ 1783 error = (*prevvidsw->diag)(adp, level); 1784 if (error) 1785 return (error); 1786 1787 if (adp != vesa_adp) 1788 return (1); 1789 1790 if (level <= 0) 1791 return (0); 1792 1793 return (0); 1794} 1795 1796static int 1797vesa_bios_info(int level) 1798{ 1799#if VESA_DEBUG > 1 1800 struct vesa_mode vmode; 1801 int i; 1802#endif 1803 uint16_t vers; 1804 1805 vers = vesa_adp_info->v_version; 1806 1807 if (bootverbose) { 1808 /* general adapter information */ 1809 printf( 1810 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1811 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1812 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1813 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1814 vesa_vmodetab, vesa_adp_info->v_modetable); 1815 1816 /* OEM string */ 1817 if (vesa_oemstr != NULL) 1818 printf("VESA: %s\n", vesa_oemstr); 1819 } 1820 1821 if (level <= 0) 1822 return (0); 1823 1824 if (vers >= 0x0200 && bootverbose) { 1825 /* vender name, product name, product revision */ 1826 printf("VESA: %s %s %s\n", 1827 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1828 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1829 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1830 } 1831 1832#if VESA_DEBUG > 1 1833 /* mode information */ 1834 for (i = 0; 1835 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1836 && (vesa_vmodetab[i] != 0xffff); ++i) { 1837 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1838 continue; 1839 1840 /* print something for diagnostic purpose */ 1841 printf("VESA: mode:0x%03x, flags:0x%04x", 1842 vesa_vmodetab[i], vmode.v_modeattr); 1843 if (vmode.v_modeattr & V_MODEOPTINFO) { 1844 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1845 printf(", G %dx%dx%d %d, ", 1846 vmode.v_width, vmode.v_height, 1847 vmode.v_bpp, vmode.v_planes); 1848 } else { 1849 printf(", T %dx%d, ", 1850 vmode.v_width, vmode.v_height); 1851 } 1852 printf("font:%dx%d, ", 1853 vmode.v_cwidth, vmode.v_cheight); 1854 printf("pages:%d, mem:%d", 1855 vmode.v_ipages + 1, vmode.v_memmodel); 1856 } 1857 if (vmode.v_modeattr & V_MODELFB) { 1858 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1859 vmode.v_lfb, vmode.v_offscreen, 1860 vmode.v_offscreensize*1024); 1861 } 1862 printf("\n"); 1863 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1864 vmode.v_waseg, vmode.v_waattr, 1865 vmode.v_wbseg, vmode.v_wbattr); 1866 printf("size:%dk, gran:%dk\n", 1867 vmode.v_wsize, vmode.v_wgran); 1868 } 1869#endif /* VESA_DEBUG > 1 */ 1870 1871 return (0); 1872} 1873 1874/* module loading */ 1875 1876static int 1877vesa_load(void) 1878{ 1879 int error; 1880 1881 if (vesa_init_done) 1882 return (0); 1883 1884 mtx_init(&vesa_lock, "VESA lock", NULL, MTX_DEF); 1885 1886 /* locate a VGA adapter */ 1887 vesa_adp = NULL; 1888 error = vesa_configure(0); 1889 1890 if (error == 0) 1891 vesa_bios_info(bootverbose); 1892 1893 return (error); 1894} 1895 1896static int 1897vesa_unload(void) 1898{ 1899 u_char palette[256*3]; 1900 int error; 1901 1902 /* if the adapter is currently in a VESA mode, don't unload */ 1903 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1904 return (EBUSY); 1905 /* 1906 * FIXME: if there is at least one vty which is in a VESA mode, 1907 * we shouldn't be unloading! XXX 1908 */ 1909 1910 if ((error = vesa_unload_ioctl()) == 0) { 1911 if (vesa_adp != NULL) { 1912 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1913 vesa_bios_save_palette(0, 256, palette, 8); 1914 vesa_bios_set_dac(6); 1915 vesa_adp->va_flags &= ~V_ADP_DAC8; 1916 vesa_bios_load_palette(0, 256, palette, 6); 1917 } 1918 vesa_adp->va_flags &= ~V_ADP_VESA; 1919 vidsw[vesa_adp->va_index] = prevvidsw; 1920 } 1921 } 1922 1923 vesa_bios_uninit(); 1924 mtx_destroy(&vesa_lock); 1925 1926 return (error); 1927} 1928 1929static int 1930vesa_mod_event(module_t mod, int type, void *data) 1931{ 1932 1933 switch (type) { 1934 case MOD_LOAD: 1935 return (vesa_load()); 1936 case MOD_UNLOAD: 1937 return (vesa_unload()); 1938 } 1939 return (EOPNOTSUPP); 1940} 1941 1942static moduledata_t vesa_mod = { 1943 "vesa", 1944 vesa_mod_event, 1945 NULL, 1946}; 1947 1948DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1949MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1950 1951#endif /* VGA_NO_MODE_CHANGE */ 1952