vesa.c revision 197444
1187423Sgonzo/*- 2187423Sgonzo * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3187706Sgonzo * All rights reserved. 4213239Sgonzo * 5187456Sgonzo * Redistribution and use in source and binary forms, with or without 6191290Sgonzo * modification, are permitted provided that the following conditions 7188884Sgonzo * are met: 8221252Sadrian * 1. Redistributions of source code must retain the above copyright 9221254Sadrian * notice, this list of conditions and the following disclaimer as 10192161Sgonzo * the first lines of this file unmodified. 11192357Sgonzo * 2. Redistributions in binary form must reproduce the above copyright 12202839Sgonzo * notice, this list of conditions and the following disclaimer in the 13195514Sgonzo * documentation and/or other materials provided with the distribution. 14188809Sgonzo * 15243177Sadrian * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16243177Sadrian * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17191289Sgonzo * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18198154Srrs * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19198669Srrs * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20211476Sadrian * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21211476Sadrian * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22211503Sadrian * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23211502Sadrian * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24234485Sadrian * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25233319Sgonzo */ 26233319Sgonzo 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/fb/vesa.c 197444 2009-09-23 20:49:14Z 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/systm.h> 37#include <sys/kernel.h> 38#include <sys/module.h> 39#include <sys/malloc.h> 40#include <sys/fbio.h> 41 42#include <vm/vm.h> 43#include <vm/vm_extern.h> 44#include <vm/vm_kern.h> 45#include <vm/vm_param.h> 46#include <vm/pmap.h> 47 48#include <machine/pc/bios.h> 49#include <dev/fb/vesa.h> 50 51#include <dev/fb/fbreg.h> 52#include <dev/fb/vgareg.h> 53 54#include <isa/isareg.h> 55 56#include <compat/x86bios/x86bios.h> 57 58#define VESA_VIA_CLE266 "VIA CLE266\r\n" 59 60#ifndef VESA_DEBUG 61#define VESA_DEBUG 0 62#endif 63 64/* VESA video adapter state buffer stub */ 65struct adp_state { 66 int sig; 67#define V_STATE_SIG 0x61736576 68 u_char regs[1]; 69}; 70typedef struct adp_state adp_state_t; 71 72/* VESA video adapter */ 73static video_adapter_t *vesa_adp = NULL; 74static int vesa_state_buf_size = 0; 75#define VESA_BIOS_BUFSIZE (3 * PAGE_SIZE) 76 77/* VESA functions */ 78#if 0 79static int vesa_nop(void); 80#endif 81static int vesa_error(void); 82static vi_probe_t vesa_probe; 83static vi_init_t vesa_init; 84static vi_get_info_t vesa_get_info; 85static vi_query_mode_t vesa_query_mode; 86static vi_set_mode_t vesa_set_mode; 87static vi_save_font_t vesa_save_font; 88static vi_load_font_t vesa_load_font; 89static vi_show_font_t vesa_show_font; 90static vi_save_palette_t vesa_save_palette; 91static vi_load_palette_t vesa_load_palette; 92static vi_set_border_t vesa_set_border; 93static vi_save_state_t vesa_save_state; 94static vi_load_state_t vesa_load_state; 95static vi_set_win_org_t vesa_set_origin; 96static vi_read_hw_cursor_t vesa_read_hw_cursor; 97static vi_set_hw_cursor_t vesa_set_hw_cursor; 98static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 99static vi_blank_display_t vesa_blank_display; 100static vi_mmap_t vesa_mmap; 101static vi_ioctl_t vesa_ioctl; 102static vi_clear_t vesa_clear; 103static vi_fill_rect_t vesa_fill_rect; 104static vi_bitblt_t vesa_bitblt; 105static vi_diag_t vesa_diag; 106static int vesa_bios_info(int level); 107 108static video_switch_t vesavidsw = { 109 vesa_probe, 110 vesa_init, 111 vesa_get_info, 112 vesa_query_mode, 113 vesa_set_mode, 114 vesa_save_font, 115 vesa_load_font, 116 vesa_show_font, 117 vesa_save_palette, 118 vesa_load_palette, 119 vesa_set_border, 120 vesa_save_state, 121 vesa_load_state, 122 vesa_set_origin, 123 vesa_read_hw_cursor, 124 vesa_set_hw_cursor, 125 vesa_set_hw_cursor_shape, 126 vesa_blank_display, 127 vesa_mmap, 128 vesa_ioctl, 129 vesa_clear, 130 vesa_fill_rect, 131 vesa_bitblt, 132 vesa_error, 133 vesa_error, 134 vesa_diag, 135}; 136 137static video_switch_t *prevvidsw; 138 139/* VESA BIOS video modes */ 140#define VESA_MAXMODES 64 141#define EOT (-1) 142#define NA (-2) 143 144#define MODE_TABLE_DELTA 8 145 146static int vesa_vmode_max = 0; 147static video_info_t vesa_vmode_empty = { EOT }; 148static video_info_t *vesa_vmode = &vesa_vmode_empty; 149 150static int vesa_init_done = FALSE; 151static int has_vesa_bios = FALSE; 152static struct vesa_info *vesa_adp_info = NULL; 153static u_int16_t *vesa_vmodetab = NULL; 154static char *vesa_oemstr = NULL; 155static char *vesa_venderstr = NULL; 156static char *vesa_prodstr = NULL; 157static char *vesa_revstr = NULL; 158 159/* local macros and functions */ 160#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 161 162static int int10_set_mode(int mode); 163static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 164static int vesa_bios_set_mode(int mode); 165static int vesa_bios_get_dac(void); 166static int vesa_bios_set_dac(int bits); 167static int vesa_bios_save_palette(int start, int colors, u_char *palette, 168 int bits); 169static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 170 u_char *b, int bits); 171static int vesa_bios_load_palette(int start, int colors, u_char *palette, 172 int bits); 173#ifdef notyet 174static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 175 u_char *b, int bits); 176#endif 177#define STATE_SIZE 0 178#define STATE_SAVE 1 179#define STATE_LOAD 2 180#define STATE_HW (1<<0) 181#define STATE_DATA (1<<1) 182#define STATE_DAC (1<<2) 183#define STATE_REG (1<<3) 184#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 185#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 186static int vesa_bios_state_buf_size(void); 187static int vesa_bios_save_restore(int code, void *p, size_t size); 188static int vesa_bios_get_line_length(void); 189static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 190#if 0 191static int vesa_bios_get_start(int *x, int *y); 192#endif 193static int vesa_bios_set_start(int x, int y); 194static int vesa_map_gen_mode_num(int type, int color, int mode); 195static int vesa_translate_flags(u_int16_t vflags); 196static int vesa_translate_mmodel(u_int8_t vmodel); 197static int vesa_bios_init(void); 198static void vesa_clear_modes(video_info_t *info, int color); 199static vm_offset_t vesa_map_buffer(u_int paddr, size_t size); 200static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size); 201 202#if 0 203static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 204#endif 205 206static void 207dump_buffer(u_char *buf, size_t len) 208{ 209 int i; 210 211 for(i = 0; i < len;) { 212 printf("%02x ", buf[i]); 213 if ((++i % 16) == 0) 214 printf("\n"); 215 } 216} 217 218/* INT 10 BIOS calls */ 219static int 220int10_set_mode(int mode) 221{ 222 x86regs_t regs; 223 224 bzero(®s, sizeof(regs)); 225 regs.R_EAX = 0x0000 | mode; 226 227 x86biosCall(®s, 0x10); 228 229 return 0; 230} 231 232/* VESA BIOS calls */ 233static int 234vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 235{ 236 x86regs_t regs; 237 int offs; 238 u_char *buf; 239 240 bzero(®s, sizeof(regs)); 241 regs.R_EAX = 0x4f01; 242 regs.R_ECX = mode; 243 244 buf = (u_char *)x86biosAlloc(1, &offs); 245 246 regs.R_ES = SEG_ADDR(offs); 247 regs.R_DI = SEG_OFF(offs); 248 249 x86biosCall(®s, 0x10); 250 251 if ((regs.R_AX & 0xff) != 0x4f) 252 { 253 x86biosFree(buf, 1); 254 return 1; 255 } 256 257 bcopy(buf, vmode, sizeof(*vmode)); 258 x86biosFree(buf, 1); 259 260 return 0; 261} 262 263static int 264vesa_bios_set_mode(int mode) 265{ 266 x86regs_t regs; 267 268 bzero(®s, sizeof(regs)); 269 regs.R_EAX = 0x4f02; 270 regs.R_EBX = mode; 271 272 x86biosCall(®s, 0x10); 273 274 return ((regs.R_AX & 0xff) != 0x4f); 275} 276 277static int 278vesa_bios_get_dac(void) 279{ 280 x86regs_t regs; 281 282 bzero(®s, sizeof(regs)); 283 regs.R_EAX = 0x4f08; 284 regs.R_EBX = 1; 285 286 x86biosCall(®s, 0x10); 287 288 if ((regs.R_AX & 0xff) != 0x4f) 289 return 6; 290 291 return ((regs.R_EBX >> 8) & 0x00ff); 292} 293 294static int 295vesa_bios_set_dac(int bits) 296{ 297 x86regs_t regs; 298 299 bzero(®s, sizeof(regs)); 300 regs.R_EAX = 0x4f08; 301 regs.R_EBX = (bits << 8); 302 303 x86biosCall(®s, 0x10); 304 305 if ((regs.R_AX & 0xff) != 0x4f) 306 return 6; 307 308 return ((regs.R_EBX >> 8) & 0x00ff); 309} 310 311static int 312vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 313{ 314 x86regs_t regs; 315 int offs; 316 u_char *p; 317 int i; 318 319 bzero(®s, sizeof(regs)); 320 regs.R_EAX = 0x4f09; 321 regs.R_EBX = 1; 322 regs.R_ECX = colors; 323 regs.R_EDX = start; 324 325 p = (u_char *)x86biosAlloc(1, &offs); 326 327 regs.R_ES = SEG_ADDR(offs); 328 regs.R_DI = SEG_OFF(offs); 329 330 x86biosCall(®s, 0x10); 331 332 if ((regs.R_AX & 0xff) != 0x4f) 333 { 334 x86biosFree(p, 1); 335 return 1; 336 } 337 338 bits = 8 - bits; 339 for (i = 0; i < colors; ++i) { 340 palette[i*3] = p[i*4 + 2] << bits; 341 palette[i*3 + 1] = p[i*4 + 1] << bits; 342 palette[i*3 + 2] = p[i*4] << bits; 343 } 344 345 x86biosFree(p, 1); 346 return 0; 347} 348 349static int 350vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 351 int bits) 352{ 353 x86regs_t regs; 354 int offs; 355 u_char *p; 356 int i; 357 358 bzero(®s, sizeof(regs)); 359 regs.R_EAX = 0x4f09; 360 regs.R_EBX = 1; 361 regs.R_ECX = colors; 362 regs.R_EDX = start; 363 364 p = (u_char *)x86biosAlloc(1, &offs); 365 366 regs.R_ES = SEG_ADDR(offs); 367 regs.R_DI = SEG_OFF(offs); 368 369 x86biosCall(®s, 0x10); 370 371 if ((regs.R_AX & 0xff) != 0x4f) 372 { 373 x86biosFree(p, 1); 374 return 1; 375 } 376 377 bits = 8 - bits; 378 for (i = 0; i < colors; ++i) { 379 r[i] = p[i*4 + 2] << bits; 380 g[i] = p[i*4 + 1] << bits; 381 b[i] = p[i*4] << bits; 382 } 383 384 x86biosFree(p, 1); 385 return 0; 386} 387 388static int 389vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 390{ 391 x86regs_t regs; 392 int offs; 393 u_char *p; 394 int i; 395 396 p = (u_char *)x86biosAlloc(1, &offs); 397 398 bits = 8 - bits; 399 for (i = 0; i < colors; ++i) { 400 p[i*4] = palette[i*3 + 2] >> bits; 401 p[i*4 + 1] = palette[i*3 + 1] >> bits; 402 p[i*4 + 2] = palette[i*3] >> bits; 403 p[i*4 + 3] = 0; 404 } 405 406 bzero(®s, sizeof(regs)); 407 regs.R_EAX = 0x4f09; 408 regs.R_EBX = 0; 409 regs.R_ECX = colors; 410 regs.R_EDX = start; 411 412 regs.R_ES = SEG_ADDR(offs); 413 regs.R_DI = SEG_OFF(offs); 414 415 x86biosCall(®s, 0x10); 416 417 x86biosFree(p, 1); 418 419 return ((regs.R_AX & 0xff) != 0x4f); 420} 421 422#ifdef notyet 423static int 424vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 425 int bits) 426{ 427 x86regs_t regs; 428 int offs; 429 u_char *p; 430 int i; 431 432 p = (u_char *)x86biosAlloc(1, &offs); 433 434 bits = 8 - bits; 435 for (i = 0; i < colors; ++i) { 436 p[i*4] = b[i] >> bits; 437 p[i*4 + 1] = g[i] >> bits; 438 p[i*4 + 2] = r[i] >> bits; 439 p[i*4 + 3] = 0; 440 } 441 442 bzero(®s, sizeof(regs)); 443 regs.R_EAX = 0x4f09; 444 regs.R_EBX = 0; 445 regs.R_ECX = colors; 446 regs.R_EDX = start; 447 448 regs.R_ES = SEG_ADDR(offs); 449 regs.R_DI = SEG_OFF(offs); 450 451 x86biosCall(®s, 0x10); 452 453 x86biosFree(p, 1); 454 455 return ((regs.R_AX & 0xff) != 0x4f); 456} 457#endif 458 459static int 460vesa_bios_state_buf_size(void) 461{ 462 x86regs_t regs; 463 464 bzero(®s, sizeof(regs)); 465 regs.R_EAX = 0x4f04; 466 regs.R_ECX = STATE_ALL; 467 regs.R_EDX = STATE_SIZE; 468 469 x86biosCall(®s, 0x10); 470 471 if ((regs.R_AX & 0xff) != 0x4f) 472 return 0; 473 474 return regs.R_BX * 64; 475} 476 477static int 478vesa_bios_save_restore(int code, void *p, size_t size) 479{ 480 x86regs_t regs; 481 int offs; 482 u_char *buf; 483 484 if (size > VESA_BIOS_BUFSIZE) 485 return (1); 486 487 bzero(®s, sizeof(regs)); 488 regs.R_EAX = 0x4f04; 489 regs.R_ECX = STATE_ALL; 490 regs.R_EDX = code; 491 492 buf = (u_char *)x86biosAlloc(1, &offs); 493 494 regs.R_ES = SEG_ADDR(offs); 495 regs.R_DI = SEG_OFF(offs); 496 497 bcopy(p, buf, size); 498 499 x86biosCall(®s, 0x10); 500 501 bcopy(buf, p, size); 502 503 x86biosFree(p, 1); 504 505 return ((regs.R_AX & 0xff) != 0x4f); 506} 507 508static int 509vesa_bios_get_line_length(void) 510{ 511 x86regs_t regs; 512 513 bzero(®s, sizeof(regs)); 514 regs.R_EAX = 0x4f06; 515 regs.R_EBX = 1; 516 517 x86biosCall(®s, 0x10); 518 519 if ((regs.R_AX & 0xff) != 0x4f) 520 return -1; 521 522 return regs.R_BX; 523} 524 525static int 526vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 527{ 528 x86regs_t regs; 529 530 bzero(®s, sizeof(regs)); 531 regs.R_EAX = 0x4f06; 532 regs.R_EBX = 0; 533 regs.R_ECX = pixel; 534 535 x86biosCall(®s, 0x10); 536 537#if VESA_DEBUG > 1 538 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 539#endif 540 if ((regs.R_AX & 0xff) != 0x4f) 541 return -1; 542 543 if (bytes) 544 *bytes = regs.R_BX; 545 if (lines) 546 *lines = regs.R_DX; 547 548 return 0; 549} 550 551#if 0 552static int 553vesa_bios_get_start(int *x, int *y) 554{ 555 x86regs_t regs; 556 557 bzero(®s, sizeof(regs)); 558 regs.R_EAX = 0x4f07; 559 regs.R_EBX = 1; 560 561 x86biosCall(®s, 0x10); 562 563 if ((regs.R_AX & 0xff) != 0x4f) 564 return -1; 565 566 *x = regs.R_CX; 567 *y = regs.R_DX; 568 569 return 0; 570} 571#endif 572 573static int 574vesa_bios_set_start(int x, int y) 575{ 576 x86regs_t regs; 577 578 bzero(®s, sizeof(regs)); 579 regs.R_EAX = 0x4f07; 580 regs.R_EBX = 0x80; 581 regs.R_EDX = y; 582 regs.R_ECX = x; 583 584 x86biosCall(®s, 0x10); 585 586 return ((regs.R_AX & 0xff) != 0x4f); 587} 588 589/* map a generic video mode to a known mode */ 590static int 591vesa_map_gen_mode_num(int type, int color, int mode) 592{ 593 static struct { 594 int from; 595 int to; 596 } mode_map[] = { 597 { M_TEXT_132x25, M_VESA_C132x25 }, 598 { M_TEXT_132x43, M_VESA_C132x43 }, 599 { M_TEXT_132x50, M_VESA_C132x50 }, 600 { M_TEXT_132x60, M_VESA_C132x60 }, 601 }; 602 int i; 603 604 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 605 if (mode_map[i].from == mode) 606 return mode_map[i].to; 607 } 608 return mode; 609} 610 611static int 612vesa_translate_flags(u_int16_t vflags) 613{ 614 static struct { 615 u_int16_t mask; 616 int set; 617 int reset; 618 } ftable[] = { 619 { V_MODECOLOR, V_INFO_COLOR, 0 }, 620 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 621 { V_MODELFB, V_INFO_LINEAR, 0 }, 622 }; 623 int flags; 624 int i; 625 626 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 627 flags |= (vflags & ftable[i].mask) ? 628 ftable[i].set : ftable[i].reset; 629 } 630 return flags; 631} 632 633static int 634vesa_translate_mmodel(u_int8_t vmodel) 635{ 636 static struct { 637 u_int8_t vmodel; 638 int mmodel; 639 } mtable[] = { 640 { V_MMTEXT, V_INFO_MM_TEXT }, 641 { V_MMCGA, V_INFO_MM_CGA }, 642 { V_MMHGC, V_INFO_MM_HGC }, 643 { V_MMEGA, V_INFO_MM_PLANAR }, 644 { V_MMPACKED, V_INFO_MM_PACKED }, 645 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 646 }; 647 int i; 648 649 for (i = 0; mtable[i].mmodel >= 0; ++i) { 650 if (mtable[i].vmodel == vmodel) 651 return mtable[i].mmodel; 652 } 653 return V_INFO_MM_OTHER; 654} 655 656static int 657vesa_bios_init(void) 658{ 659 static struct vesa_info buf; 660 struct vesa_mode vmode; 661 video_info_t *p; 662 x86regs_t regs; 663 int offs; 664 u_char *vmbuf; 665 int is_via_cle266; 666 int modes; 667 int i; 668 669 if (vesa_init_done) 670 return 0; 671 672 has_vesa_bios = FALSE; 673 vesa_adp_info = NULL; 674 vesa_vmode_max = 0; 675 vesa_vmode[0].vi_mode = EOT; 676 677 vmbuf = (u_char *)x86biosAlloc(1, &offs); 678 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 679 680 bzero(®s, sizeof(regs)); 681 regs.R_EAX = 0x4f00; 682 regs.R_ES = SEG_ADDR(offs); 683 regs.R_DI = SEG_OFF(offs); 684 685 x86biosCall(®s, 0x10); 686 687 if (((regs.R_AX & 0xff) != 0x4f) || bcmp("VESA", vmbuf, 4)) 688 return 1; 689 690 bcopy(vmbuf, &buf, sizeof(buf)); 691 692 vesa_adp_info = &buf; 693 if (bootverbose) { 694 printf("VESA: information block\n"); 695 dump_buffer((u_char *)&buf, sizeof(buf)); 696 } 697 if (vesa_adp_info->v_version < 0x0102) { 698 printf("VESA: VBE version %d.%d is not supported; " 699 "version 1.2 or later is required.\n", 700 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 701 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 702 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 703 + (vesa_adp_info->v_version & 0x000f)); 704 return 1; 705 } 706 707 vesa_oemstr = (char *)x86biosOffs(FARP(vesa_adp_info->v_oemstr)); 708 709 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0; 710 711 if (vesa_adp_info->v_version >= 0x0200) { 712 vesa_venderstr = (char *)x86biosOffs(FARP(vesa_adp_info->v_venderstr)); 713 vesa_prodstr = (char *)x86biosOffs(FARP(vesa_adp_info->v_prodstr)); 714 vesa_revstr = (char *)x86biosOffs(FARP(vesa_adp_info->v_revstr)); 715 } 716 717 vesa_vmodetab = (uint16_t *)x86biosOffs(FARP(vesa_adp_info->v_modetable)); 718 719 if (vesa_vmodetab == NULL) 720 return 1; 721 722 for (i = 0, modes = 0; 723 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 724 && (vesa_vmodetab[i] != 0xffff); ++i) { 725 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 726 continue; 727 728 /* reject unsupported modes */ 729#if 0 730 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO 731 | V_MODENONVGA)) 732 != (V_MODESUPP | V_MODEOPTINFO)) 733 continue; 734#else 735 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 736#if VESA_DEBUG > 1 737 printf( 738 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n", 739 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 740 vmode.v_width, vmode.v_height, vmode.v_bpp, 741 vmode.v_modeattr); 742#endif 743 continue; 744 } 745#endif 746 747 /* expand the array if necessary */ 748 if (modes >= vesa_vmode_max) { 749 vesa_vmode_max += MODE_TABLE_DELTA; 750 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1), 751 M_DEVBUF, M_WAITOK); 752#if VESA_DEBUG > 1 753 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 754 modes, vesa_vmode_max); 755#endif 756 if (modes > 0) { 757 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 758 free(vesa_vmode, M_DEVBUF); 759 } 760 vesa_vmode = p; 761 } 762 763#if VESA_DEBUG > 1 764 printf("Found VESA %s mode: %d x %d x %d bpp\n", 765 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 766 vmode.v_width, vmode.v_height, vmode.v_bpp); 767#endif 768 if (is_via_cle266) { 769 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 770 vmode.v_width &= 0xff; 771 vmode.v_waseg = 0xb8000 >> 4; 772 } 773 } 774 775 /* copy some fields */ 776 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 777 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 778 vesa_vmode[modes].vi_width = vmode.v_width; 779 vesa_vmode[modes].vi_height = vmode.v_height; 780 vesa_vmode[modes].vi_depth = vmode.v_bpp; 781 vesa_vmode[modes].vi_planes = vmode.v_planes; 782 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 783 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 784 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4; 785 /* XXX window B */ 786 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024; 787 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024; 788 if (vmode.v_modeattr & V_MODELFB) 789 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 790 else 791 vesa_vmode[modes].vi_buffer = 0; 792 /* XXX */ 793 vesa_vmode[modes].vi_buffer_size 794 = vesa_adp_info->v_memsize*64*1024; 795#if 0 796 if (vmode.v_offscreen > vmode.v_lfb) 797 vesa_vmode[modes].vi_buffer_size 798 = vmode.v_offscreen + vmode.v_offscreensize*1024 799 - vmode.v_lfb; 800 else 801 vesa_vmode[modes].vi_buffer_size 802 = vmode.v_offscreen + vmode.v_offscreensize * 1024; 803#endif 804 vesa_vmode[modes].vi_mem_model 805 = vesa_translate_mmodel(vmode.v_memmodel); 806 vesa_vmode[modes].vi_pixel_fields[0] = 0; 807 vesa_vmode[modes].vi_pixel_fields[1] = 0; 808 vesa_vmode[modes].vi_pixel_fields[2] = 0; 809 vesa_vmode[modes].vi_pixel_fields[3] = 0; 810 vesa_vmode[modes].vi_pixel_fsizes[0] = 0; 811 vesa_vmode[modes].vi_pixel_fsizes[1] = 0; 812 vesa_vmode[modes].vi_pixel_fsizes[2] = 0; 813 vesa_vmode[modes].vi_pixel_fsizes[3] = 0; 814 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) { 815 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 816 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) { 817 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 818 vesa_vmode[modes].vi_pixel_fields[0] 819 = vmode.v_redfieldpos; 820 vesa_vmode[modes].vi_pixel_fields[1] 821 = vmode.v_greenfieldpos; 822 vesa_vmode[modes].vi_pixel_fields[2] 823 = vmode.v_bluefieldpos; 824 vesa_vmode[modes].vi_pixel_fields[3] 825 = vmode.v_resfieldpos; 826 vesa_vmode[modes].vi_pixel_fsizes[0] 827 = vmode.v_redmasksize; 828 vesa_vmode[modes].vi_pixel_fsizes[1] 829 = vmode.v_greenmasksize; 830 vesa_vmode[modes].vi_pixel_fsizes[2] 831 = vmode.v_bluemasksize; 832 vesa_vmode[modes].vi_pixel_fsizes[3] 833 = vmode.v_resmasksize; 834 } else { 835 vesa_vmode[modes].vi_pixel_size = 0; 836 } 837 838 vesa_vmode[modes].vi_flags 839 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 840 ++modes; 841 } 842 vesa_vmode[modes].vi_mode = EOT; 843 844 x86biosFree(vmbuf, 1); 845 846 if (bootverbose) 847 printf("VESA: %d mode(s) found\n", modes); 848 849 has_vesa_bios = (modes > 0); 850 if (!has_vesa_bios) 851 return (1); 852 853 return (0); 854} 855 856static void 857vesa_clear_modes(video_info_t *info, int color) 858{ 859 while (info->vi_mode != EOT) { 860 if ((info->vi_flags & V_INFO_COLOR) != color) 861 info->vi_mode = NA; 862 ++info; 863 } 864} 865 866static vm_offset_t 867vesa_map_buffer(u_int paddr, size_t size) 868{ 869 vm_offset_t vaddr; 870 u_int off; 871 872 off = paddr - trunc_page(paddr); 873 vaddr = (vm_offset_t)pmap_mapdev_attr(paddr - off, size + off, 874 PAT_WRITE_COMBINING); 875#if VESA_DEBUG > 1 876 printf("vesa_map_buffer: paddr:%x vaddr:%tx size:%zx off:%x\n", 877 paddr, vaddr, size, off); 878#endif 879 return (vaddr + off); 880} 881 882static void 883vesa_unmap_buffer(vm_offset_t vaddr, size_t size) 884{ 885#if VESA_DEBUG > 1 886 printf("vesa_unmap_buffer: vaddr:%tx size:%zx\n", vaddr, size); 887#endif 888 kmem_free(kernel_map, vaddr, size); 889} 890 891/* entry points */ 892 893static int 894vesa_configure(int flags) 895{ 896 video_adapter_t *adp; 897 int adapters; 898 int error; 899 int i; 900 901 if (vesa_init_done) 902 return 0; 903 if (flags & VIO_PROBE_ONLY) 904 return 0; /* XXX */ 905 906 /* 907 * If the VESA module has already been loaded, abort loading 908 * the module this time. 909 */ 910 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 911 if (adp->va_flags & V_ADP_VESA) 912 return ENXIO; 913 if (adp->va_type == KD_VGA) 914 break; 915 } 916 /* 917 * The VGA adapter is not found. This is because either 918 * 1) the VGA driver has not been initialized, or 2) the VGA card 919 * is not present. If 1) is the case, we shall defer 920 * initialization for now and try again later. 921 */ 922 if (adp == NULL) { 923 vga_sub_configure = vesa_configure; 924 return ENODEV; 925 } 926 927 /* count number of registered adapters */ 928 for (++i; vid_get_adapter(i) != NULL; ++i) 929 ; 930 adapters = i; 931 932 /* call VESA BIOS */ 933 vesa_adp = adp; 934 if (vesa_bios_init()) { 935 vesa_adp = NULL; 936 return ENXIO; 937 } 938 vesa_adp->va_flags |= V_ADP_VESA; 939 940 /* remove conflicting modes if we have more than one adapter */ 941 if (adapters > 1) { 942 vesa_clear_modes(vesa_vmode, 943 (vesa_adp->va_flags & V_ADP_COLOR) ? 944 V_INFO_COLOR : 0); 945 } 946 947 if ((error = vesa_load_ioctl()) == 0) { 948 prevvidsw = vidsw[vesa_adp->va_index]; 949 vidsw[vesa_adp->va_index] = &vesavidsw; 950 vesa_init_done = TRUE; 951 } else { 952 vesa_adp = NULL; 953 return error; 954 } 955 956 return 0; 957} 958 959#if 0 960static int 961vesa_nop(void) 962{ 963 return 0; 964} 965#endif 966 967static int 968vesa_error(void) 969{ 970 return 1; 971} 972 973static int 974vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 975{ 976 return (*prevvidsw->probe)(unit, adpp, arg, flags); 977} 978 979static int 980vesa_init(int unit, video_adapter_t *adp, int flags) 981{ 982 return (*prevvidsw->init)(unit, adp, flags); 983} 984 985static int 986vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 987{ 988 int i; 989 990 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 991 return 0; 992 993 if (adp != vesa_adp) 994 return 1; 995 996 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 997 vesa_adp->va_flags & V_ADP_COLOR, mode); 998 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 999 if (vesa_vmode[i].vi_mode == NA) 1000 continue; 1001 if (vesa_vmode[i].vi_mode == mode) { 1002 *info = vesa_vmode[i]; 1003 return 0; 1004 } 1005 } 1006 return 1; 1007} 1008 1009static int 1010vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1011{ 1012 int i; 1013 1014 if ((*prevvidsw->query_mode)(adp, info) == 0) 1015 return 0; 1016 if (adp != vesa_adp) 1017 return ENODEV; 1018 1019 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1020 if ((info->vi_width != 0) 1021 && (info->vi_width != vesa_vmode[i].vi_width)) 1022 continue; 1023 if ((info->vi_height != 0) 1024 && (info->vi_height != vesa_vmode[i].vi_height)) 1025 continue; 1026 if ((info->vi_cwidth != 0) 1027 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1028 continue; 1029 if ((info->vi_cheight != 0) 1030 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1031 continue; 1032 if ((info->vi_depth != 0) 1033 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1034 continue; 1035 if ((info->vi_planes != 0) 1036 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1037 continue; 1038 /* pixel format, memory model */ 1039 if ((info->vi_flags != 0) 1040 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1041 continue; 1042 *info = vesa_vmode[i]; 1043 return 0; 1044 } 1045 return ENODEV; 1046} 1047 1048static int 1049vesa_set_mode(video_adapter_t *adp, int mode) 1050{ 1051 video_info_t info; 1052 int len; 1053 1054 if (adp != vesa_adp) 1055 return (*prevvidsw->set_mode)(adp, mode); 1056 1057 mode = vesa_map_gen_mode_num(adp->va_type, 1058 adp->va_flags & V_ADP_COLOR, mode); 1059#if VESA_DEBUG > 0 1060 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1061 adp->va_mode, adp->va_mode, mode, mode); 1062#endif 1063 /* 1064 * If the current mode is a VESA mode and the new mode is not, 1065 * restore the state of the adapter first by setting one of the 1066 * standard VGA mode, so that non-standard, extended SVGA registers 1067 * are set to the state compatible with the standard VGA modes. 1068 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1069 * the new mode correctly. 1070 */ 1071 if (VESA_MODE(adp->va_mode)) { 1072 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) { 1073 int10_set_mode(adp->va_initial_bios_mode); 1074 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1075 vesa_unmap_buffer(adp->va_buffer, 1076 vesa_adp_info->v_memsize*64*1024); 1077 /* 1078 * Once (*prevvidsw->get_info)() succeeded, 1079 * (*prevvidsw->set_mode)() below won't fail... 1080 */ 1081 } 1082 } 1083 1084 /* we may not need to handle this mode after all... */ 1085 if ((*prevvidsw->set_mode)(adp, mode) == 0) 1086 return 0; 1087 1088 /* is the new mode supported? */ 1089 if (vesa_get_info(adp, mode, &info)) 1090 return 1; 1091 /* assert(VESA_MODE(mode)); */ 1092 1093#if VESA_DEBUG > 0 1094 printf("VESA: about to set a VESA mode...\n"); 1095#endif 1096 /* don't use the linear frame buffer for text modes. XXX */ 1097 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1098 info.vi_flags &= ~V_INFO_LINEAR; 1099 1100 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1101 return 1; 1102 1103 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1104 vesa_unmap_buffer(adp->va_buffer, 1105 vesa_adp_info->v_memsize*64*1024); 1106 1107#if VESA_DEBUG > 0 1108 printf("VESA: mode set!\n"); 1109#endif 1110 vesa_adp->va_mode = mode; 1111 vesa_adp->va_flags &= ~V_ADP_COLOR; 1112 vesa_adp->va_flags |= 1113 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1114 vesa_adp->va_crtc_addr = 1115 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1116 if (info.vi_flags & V_INFO_LINEAR) { 1117#if VESA_DEBUG > 1 1118 printf("VESA: setting up LFB\n"); 1119#endif 1120 vesa_adp->va_buffer = 1121 vesa_map_buffer(info.vi_buffer, 1122 vesa_adp_info->v_memsize*64*1024); 1123 vesa_adp->va_buffer_size = info.vi_buffer_size; 1124 vesa_adp->va_window = vesa_adp->va_buffer; 1125 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes; 1126 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes; 1127 } else { 1128 vesa_adp->va_buffer = 0; 1129 vesa_adp->va_buffer_size = info.vi_buffer_size; 1130 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window); 1131 vesa_adp->va_window_size = info.vi_window_size; 1132 vesa_adp->va_window_gran = info.vi_window_gran; 1133 } 1134 vesa_adp->va_window_orig = 0; 1135 len = vesa_bios_get_line_length(); 1136 if (len > 0) { 1137 vesa_adp->va_line_width = len; 1138 } else if (info.vi_flags & V_INFO_GRAPHICS) { 1139 switch (info.vi_depth/info.vi_planes) { 1140 case 1: 1141 vesa_adp->va_line_width = info.vi_width/8; 1142 break; 1143 case 2: 1144 vesa_adp->va_line_width = info.vi_width/4; 1145 break; 1146 case 4: 1147 vesa_adp->va_line_width = info.vi_width/2; 1148 break; 1149 case 8: 1150 default: /* shouldn't happen */ 1151 vesa_adp->va_line_width = info.vi_width; 1152 break; 1153 case 15: 1154 case 16: 1155 vesa_adp->va_line_width = info.vi_width*2; 1156 break; 1157 case 24: 1158 case 32: 1159 vesa_adp->va_line_width = info.vi_width*4; 1160 break; 1161 } 1162 } else { 1163 vesa_adp->va_line_width = info.vi_width; 1164 } 1165 vesa_adp->va_disp_start.x = 0; 1166 vesa_adp->va_disp_start.y = 0; 1167#if VESA_DEBUG > 0 1168 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n", 1169 info.vi_width, len, vesa_adp->va_line_width); 1170#endif 1171 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1172 1173 /* move hardware cursor out of the way */ 1174 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1175 1176 return 0; 1177} 1178 1179static int 1180vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1181 u_char *data, int ch, int count) 1182{ 1183 return (*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1184 ch, count); 1185} 1186 1187static int 1188vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1189 u_char *data, int ch, int count) 1190{ 1191 return (*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1192 ch, count); 1193} 1194 1195static int 1196vesa_show_font(video_adapter_t *adp, int page) 1197{ 1198 return (*prevvidsw->show_font)(adp, page); 1199} 1200 1201static int 1202vesa_save_palette(video_adapter_t *adp, u_char *palette) 1203{ 1204 int bits; 1205 int error; 1206 1207 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1208 && VESA_MODE(adp->va_mode)) { 1209 bits = vesa_bios_get_dac(); 1210 error = vesa_bios_save_palette(0, 256, palette, bits); 1211 if (error == 0) 1212 return 0; 1213 if (bits != 6) 1214 return error; 1215 } 1216 1217 return (*prevvidsw->save_palette)(adp, palette); 1218} 1219 1220static int 1221vesa_load_palette(video_adapter_t *adp, u_char *palette) 1222{ 1223#ifdef notyet 1224 int bits; 1225 int error; 1226 1227 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1228 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) { 1229 error = vesa_bios_load_palette(0, 256, palette, bits); 1230 if (error == 0) 1231 return 0; 1232 if (vesa_bios_set_dac(6) != 6) 1233 return 1; 1234 } 1235#endif /* notyet */ 1236 1237 return (*prevvidsw->load_palette)(adp, palette); 1238} 1239 1240static int 1241vesa_set_border(video_adapter_t *adp, int color) 1242{ 1243 return (*prevvidsw->set_border)(adp, color); 1244} 1245 1246static int 1247vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1248{ 1249 if (adp != vesa_adp) 1250 return (*prevvidsw->save_state)(adp, p, size); 1251 1252 if (vesa_state_buf_size == 0) 1253 vesa_state_buf_size = vesa_bios_state_buf_size(); 1254 if (size == 0) 1255 return (sizeof(int) + vesa_state_buf_size); 1256 else if (size < (sizeof(int) + vesa_state_buf_size)) 1257 return 1; 1258 1259 ((adp_state_t *)p)->sig = V_STATE_SIG; 1260 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1261 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1262 vesa_state_buf_size); 1263} 1264 1265static int 1266vesa_load_state(video_adapter_t *adp, void *p) 1267{ 1268 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1269 return (*prevvidsw->load_state)(adp, p); 1270 1271 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1272 vesa_state_buf_size); 1273} 1274 1275#if 0 1276static int 1277vesa_get_origin(video_adapter_t *adp, off_t *offset) 1278{ 1279 x86regs_t regs; 1280 1281 bzero(®s, sizeof(regs)); 1282 regs.R_EAX = 0x4f05; 1283 regs.R_EBX = 0x10; 1284 1285 x86biosCall(®s, 0x10); 1286 1287 if ((regs.R_AX & 0xff) != 0x4f) 1288 return 1; 1289 *offset = regs.DX * adp->va_window_gran; 1290 1291 return 0; 1292} 1293#endif 1294 1295static int 1296vesa_set_origin(video_adapter_t *adp, off_t offset) 1297{ 1298 x86regs_t regs; 1299 1300 /* 1301 * This function should return as quickly as possible to 1302 * maintain good performance of the system. For this reason, 1303 * error checking is kept minimal and let the VESA BIOS to 1304 * detect error. 1305 */ 1306 if (adp != vesa_adp) 1307 return (*prevvidsw->set_win_org)(adp, offset); 1308 1309 /* if this is a linear frame buffer, do nothing */ 1310 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1311 return 0; 1312 /* XXX */ 1313 if (adp->va_window_gran == 0) 1314 return 1; 1315 1316 bzero(®s, sizeof(regs)); 1317 regs.R_EAX = 0x4f05; 1318 regs.R_EBX = 0; 1319 regs.R_EDX = offset / adp->va_window_gran; 1320 x86biosCall(®s, 0x10); 1321 1322 if ((regs.R_AX & 0xff) != 0x4f) 1323 return 1; 1324 1325 bzero(®s, sizeof(regs)); 1326 regs.R_EAX = 0x4f05; 1327 regs.R_EBX = 1; 1328 regs.R_EDX = offset / adp->va_window_gran; 1329 x86biosCall(®s, 0x10); 1330 1331 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1332 return 0; /* XXX */ 1333} 1334 1335static int 1336vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1337{ 1338 return (*prevvidsw->read_hw_cursor)(adp, col, row); 1339} 1340 1341static int 1342vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1343{ 1344 return (*prevvidsw->set_hw_cursor)(adp, col, row); 1345} 1346 1347static int 1348vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1349 int celsize, int blink) 1350{ 1351 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1352 blink); 1353} 1354 1355static int 1356vesa_blank_display(video_adapter_t *adp, int mode) 1357{ 1358 /* XXX: use VESA DPMS */ 1359 return (*prevvidsw->blank_display)(adp, mode); 1360} 1361 1362static int 1363vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1364 int prot) 1365{ 1366#if VESA_DEBUG > 0 1367 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%tx\n", 1368 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1369#endif 1370 1371 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) { 1372 /* va_window_size == va_buffer_size/vi_planes */ 1373 /* XXX: is this correct? */ 1374 if (offset > adp->va_window_size - PAGE_SIZE) 1375 return -1; 1376 *paddr = adp->va_info.vi_buffer + offset; 1377 return 0; 1378 } else { 1379 return (*prevvidsw->mmap)(adp, offset, paddr, prot); 1380 } 1381} 1382 1383static int 1384vesa_clear(video_adapter_t *adp) 1385{ 1386 return (*prevvidsw->clear)(adp); 1387} 1388 1389static int 1390vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1391{ 1392 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy); 1393} 1394 1395static int 1396vesa_bitblt(video_adapter_t *adp,...) 1397{ 1398 /* FIXME */ 1399 return 1; 1400} 1401 1402static int 1403get_palette(video_adapter_t *adp, int base, int count, 1404 u_char *red, u_char *green, u_char *blue, u_char *trans) 1405{ 1406 u_char *r; 1407 u_char *g; 1408 u_char *b; 1409 int bits; 1410 int error; 1411 1412 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256)) 1413 return 1; 1414 if ((base + count) > 256) 1415 return 1; 1416 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)) 1417 return 1; 1418 1419 bits = vesa_bios_get_dac(); 1420 if (bits <= 6) 1421 return 1; 1422 1423 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1424 g = r + count; 1425 b = g + count; 1426 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1427 if (error == 0) { 1428 copyout(r, red, count); 1429 copyout(g, green, count); 1430 copyout(b, blue, count); 1431 if (trans != NULL) { 1432 bzero(r, count); 1433 copyout(r, trans, count); 1434 } 1435 } 1436 free(r, M_DEVBUF); 1437 1438 /* if error && bits != 6 at this point, we are in trouble... XXX */ 1439 return error; 1440} 1441 1442static int 1443set_palette(video_adapter_t *adp, int base, int count, 1444 u_char *red, u_char *green, u_char *blue, u_char *trans) 1445{ 1446 return 1; 1447#ifdef notyet 1448 u_char *r; 1449 u_char *g; 1450 u_char *b; 1451 int bits; 1452 int error; 1453 1454 if ((base < 0) || (base >= 256) || (base + count > 256)) 1455 return 1; 1456 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode) 1457 || ((bits = vesa_bios_set_dac(8)) <= 6)) 1458 return 1; 1459 1460 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1461 g = r + count; 1462 b = g + count; 1463 copyin(red, r, count); 1464 copyin(green, g, count); 1465 copyin(blue, b, count); 1466 1467 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1468 free(r, M_DEVBUF); 1469 if (error == 0) 1470 return 0; 1471 1472 /* if the following call fails, we are in trouble... XXX */ 1473 vesa_bios_set_dac(6); 1474 return 1; 1475#endif /* notyet */ 1476} 1477 1478static int 1479vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1480{ 1481 int bytes; 1482 1483 if (adp != vesa_adp) 1484 return (*prevvidsw->ioctl)(adp, cmd, arg); 1485 1486 switch (cmd) { 1487 case FBIO_SETWINORG: /* set frame buffer window origin */ 1488 if (!VESA_MODE(adp->va_mode)) 1489 return (*prevvidsw->ioctl)(adp, cmd, arg); 1490 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1491 1492 case FBIO_SETDISPSTART: /* set display start address */ 1493 if (!VESA_MODE(adp->va_mode)) 1494 return (*prevvidsw->ioctl)(adp, cmd, arg); 1495 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1496 ((video_display_start_t *)arg)->y)) 1497 return ENODEV; 1498 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1499 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1500 return 0; 1501 1502 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1503 if (!VESA_MODE(adp->va_mode)) 1504 return (*prevvidsw->ioctl)(adp, cmd, arg); 1505 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1506 return ENODEV; 1507 adp->va_line_width = bytes; 1508#if VESA_DEBUG > 1 1509 printf("new line width:%d\n", adp->va_line_width); 1510#endif 1511 return 0; 1512 1513 case FBIO_GETPALETTE: /* get color palette */ 1514 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1515 ((video_color_palette_t *)arg)->count, 1516 ((video_color_palette_t *)arg)->red, 1517 ((video_color_palette_t *)arg)->green, 1518 ((video_color_palette_t *)arg)->blue, 1519 ((video_color_palette_t *)arg)->transparent)) 1520 return (*prevvidsw->ioctl)(adp, cmd, arg); 1521 return 0; 1522 1523 1524 case FBIO_SETPALETTE: /* set color palette */ 1525 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1526 ((video_color_palette_t *)arg)->count, 1527 ((video_color_palette_t *)arg)->red, 1528 ((video_color_palette_t *)arg)->green, 1529 ((video_color_palette_t *)arg)->blue, 1530 ((video_color_palette_t *)arg)->transparent)) 1531 return (*prevvidsw->ioctl)(adp, cmd, arg); 1532 return 0; 1533 1534 case FBIOGETCMAP: /* get color palette */ 1535 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1536 ((struct fbcmap *)arg)->count, 1537 ((struct fbcmap *)arg)->red, 1538 ((struct fbcmap *)arg)->green, 1539 ((struct fbcmap *)arg)->blue, NULL)) 1540 return (*prevvidsw->ioctl)(adp, cmd, arg); 1541 return 0; 1542 1543 case FBIOPUTCMAP: /* set color palette */ 1544 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1545 ((struct fbcmap *)arg)->count, 1546 ((struct fbcmap *)arg)->red, 1547 ((struct fbcmap *)arg)->green, 1548 ((struct fbcmap *)arg)->blue, NULL)) 1549 return (*prevvidsw->ioctl)(adp, cmd, arg); 1550 return 0; 1551 1552 default: 1553 return (*prevvidsw->ioctl)(adp, cmd, arg); 1554 } 1555} 1556 1557static int 1558vesa_diag(video_adapter_t *adp, int level) 1559{ 1560 int error; 1561 1562 /* call the previous handler first */ 1563 error = (*prevvidsw->diag)(adp, level); 1564 if (error) 1565 return error; 1566 1567 if (adp != vesa_adp) 1568 return 1; 1569 1570 if (level <= 0) 1571 return 0; 1572 1573 return 0; 1574} 1575 1576static int 1577vesa_bios_info(int level) 1578{ 1579#if VESA_DEBUG > 1 1580 struct vesa_mode vmode; 1581 int i; 1582#endif 1583 1584 if (bootverbose) { 1585 /* general adapter information */ 1586 printf( 1587 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1588 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 + 1589 ((vesa_adp_info->v_version & 0x0f00) >> 8), 1590 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 + 1591 (vesa_adp_info->v_version & 0x000f), 1592 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1593 vesa_vmodetab, vesa_adp_info->v_modetable); 1594 1595 /* OEM string */ 1596 if (vesa_oemstr != NULL) 1597 printf("VESA: %s\n", vesa_oemstr); 1598 } 1599 1600 if (level <= 0) 1601 return 0; 1602 1603 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) { 1604 /* vender name, product name, product revision */ 1605 printf("VESA: %s %s %s\n", 1606 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1607 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1608 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1609 } 1610 1611#if VESA_DEBUG > 1 1612 /* mode information */ 1613 for (i = 0; 1614 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1615 && (vesa_vmodetab[i] != 0xffff); ++i) { 1616 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1617 continue; 1618 1619 /* print something for diagnostic purpose */ 1620 printf("VESA: mode:0x%03x, flags:0x%04x", 1621 vesa_vmodetab[i], vmode.v_modeattr); 1622 if (vmode.v_modeattr & V_MODEOPTINFO) { 1623 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1624 printf(", G %dx%dx%d %d, ", 1625 vmode.v_width, vmode.v_height, 1626 vmode.v_bpp, vmode.v_planes); 1627 } else { 1628 printf(", T %dx%d, ", 1629 vmode.v_width, vmode.v_height); 1630 } 1631 printf("font:%dx%d, ", 1632 vmode.v_cwidth, vmode.v_cheight); 1633 printf("pages:%d, mem:%d", 1634 vmode.v_ipages + 1, vmode.v_memmodel); 1635 } 1636 if (vmode.v_modeattr & V_MODELFB) { 1637 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1638 vmode.v_lfb, vmode.v_offscreen, 1639 vmode.v_offscreensize*1024); 1640 } 1641 printf("\n"); 1642 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1643 vmode.v_waseg, vmode.v_waattr, 1644 vmode.v_wbseg, vmode.v_wbattr); 1645 printf("size:%dk, gran:%dk\n", 1646 vmode.v_wsize, vmode.v_wgran); 1647 } 1648#endif /* VESA_DEBUG > 1 */ 1649 1650 return 0; 1651} 1652 1653/* module loading */ 1654 1655static int 1656vesa_load(void) 1657{ 1658 int error; 1659 int s; 1660 1661 if (vesa_init_done) 1662 return 0; 1663 1664 /* locate a VGA adapter */ 1665 s = spltty(); 1666 vesa_adp = NULL; 1667 error = vesa_configure(0); 1668 splx(s); 1669 1670 if (error == 0) 1671 vesa_bios_info(bootverbose); 1672 1673 return error; 1674} 1675 1676static int 1677vesa_unload(void) 1678{ 1679 u_char palette[256*3]; 1680 int error; 1681 int bits; 1682 int s; 1683 1684 /* if the adapter is currently in a VESA mode, don't unload */ 1685 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1686 return EBUSY; 1687 /* 1688 * FIXME: if there is at least one vty which is in a VESA mode, 1689 * we shouldn't be unloading! XXX 1690 */ 1691 1692 s = spltty(); 1693 if ((error = vesa_unload_ioctl()) == 0) { 1694 if (vesa_adp != NULL) { 1695 if (vesa_adp_info->v_flags & V_DAC8) { 1696 bits = vesa_bios_get_dac(); 1697 if (bits > 6) { 1698 vesa_bios_save_palette(0, 256, 1699 palette, bits); 1700 vesa_bios_set_dac(6); 1701 vesa_bios_load_palette(0, 256, 1702 palette, 6); 1703 } 1704 } 1705 vesa_adp->va_flags &= ~V_ADP_VESA; 1706 vidsw[vesa_adp->va_index] = prevvidsw; 1707 } 1708 } 1709 splx(s); 1710 1711 return error; 1712} 1713 1714static int 1715vesa_mod_event(module_t mod, int type, void *data) 1716{ 1717 switch (type) { 1718 case MOD_LOAD: 1719 return vesa_load(); 1720 case MOD_UNLOAD: 1721 return vesa_unload(); 1722 default: 1723 return EOPNOTSUPP; 1724 } 1725 return 0; 1726} 1727 1728static moduledata_t vesa_mod = { 1729 "vesa", 1730 vesa_mod_event, 1731 NULL, 1732}; 1733 1734DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1735MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1736 1737#endif /* VGA_NO_MODE_CHANGE */ 1738