vesa.c revision 197387
1/*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/fb/vesa.c 197387 2009-09-21 08:53:26Z delphij $"); 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 <dev/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 regs.R_EAX = 0x0000 | mode; 225 226 x86biosCall(®s, 0x10); 227 228 return 0; 229} 230 231/* VESA BIOS calls */ 232static int 233vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 234{ 235 x86regs_t regs; 236 int offs; 237 u_char *buf; 238 239 regs.R_EAX = 0x4f01; 240 regs.R_ECX = mode; 241 242 buf = (u_char *)x86biosAlloc(1, &offs); 243 244 regs.R_ES = SEG_ADDR(offs); 245 regs.R_DI = SEG_OFF(offs); 246 247 x86biosCall(®s, 0x10); 248 249 if ((regs.R_AX & 0xff) != 0x4f) 250 { 251 x86biosFree(buf, 1); 252 return 1; 253 } 254 255 bcopy(buf, vmode, sizeof(*vmode)); 256 x86biosFree(buf, 1); 257 258 return 0; 259} 260 261static int 262vesa_bios_set_mode(int mode) 263{ 264 x86regs_t regs; 265 266 regs.R_EAX = 0x4f02; 267 regs.R_EBX = mode; 268 269 x86biosCall(®s, 0x10); 270 271 return ((regs.R_AX & 0xff) != 0x4f); 272} 273 274static int 275vesa_bios_get_dac(void) 276{ 277 x86regs_t regs; 278 279 regs.R_EAX = 0x4f08; 280 regs.R_EBX = 1; 281 282 x86biosCall(®s, 0x10); 283 284 if ((regs.R_AX & 0xff) != 0x4f) 285 return 6; 286 287 return ((regs.R_EBX >> 8) & 0x00ff); 288} 289 290static int 291vesa_bios_set_dac(int bits) 292{ 293 x86regs_t regs; 294 295 regs.R_EAX = 0x4f08; 296 regs.R_EBX = (bits << 8); 297 298 x86biosCall(®s, 0x10); 299 300 if ((regs.R_AX & 0xff) != 0x4f) 301 return 6; 302 303 return ((regs.R_EBX >> 8) & 0x00ff); 304} 305 306static int 307vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 308{ 309 x86regs_t regs; 310 int offs; 311 u_char *p; 312 int i; 313 314 regs.R_EAX = 0x4f09; 315 regs.R_EBX = 1; 316 regs.R_ECX = colors; 317 regs.R_EDX = start; 318 319 p = (u_char *)x86biosAlloc(1, &offs); 320 321 regs.R_ES = SEG_ADDR(offs); 322 regs.R_DI = SEG_OFF(offs); 323 324 x86biosCall(®s, 0x10); 325 326 if ((regs.R_AX & 0xff) != 0x4f) 327 { 328 x86biosFree(p, 1); 329 return 1; 330 } 331 332 bits = 8 - bits; 333 for (i = 0; i < colors; ++i) { 334 palette[i*3] = p[i*4 + 2] << bits; 335 palette[i*3 + 1] = p[i*4 + 1] << bits; 336 palette[i*3 + 2] = p[i*4] << bits; 337 } 338 339 x86biosFree(p, 1); 340 return 0; 341} 342 343static int 344vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 345 int bits) 346{ 347 x86regs_t regs; 348 int offs; 349 u_char *p; 350 int i; 351 352 regs.R_EAX = 0x4f09; 353 regs.R_EBX = 1; 354 regs.R_ECX = colors; 355 regs.R_EDX = start; 356 357 p = (u_char *)x86biosAlloc(1, &offs); 358 359 regs.R_ES = SEG_ADDR(offs); 360 regs.R_DI = SEG_OFF(offs); 361 362 x86biosCall(®s, 0x10); 363 364 if ((regs.R_AX & 0xff) != 0x4f) 365 { 366 x86biosFree(p, 1); 367 return 1; 368 } 369 370 bits = 8 - bits; 371 for (i = 0; i < colors; ++i) { 372 r[i] = p[i*4 + 2] << bits; 373 g[i] = p[i*4 + 1] << bits; 374 b[i] = p[i*4] << bits; 375 } 376 377 x86biosFree(p, 1); 378 return 0; 379} 380 381static int 382vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 383{ 384 x86regs_t regs; 385 int offs; 386 u_char *p; 387 int i; 388 389 p = (u_char *)x86biosAlloc(1, &offs); 390 391 bits = 8 - bits; 392 for (i = 0; i < colors; ++i) { 393 p[i*4] = palette[i*3 + 2] >> bits; 394 p[i*4 + 1] = palette[i*3 + 1] >> bits; 395 p[i*4 + 2] = palette[i*3] >> bits; 396 p[i*4 + 3] = 0; 397 } 398 399 regs.R_EAX = 0x4f09; 400 regs.R_EBX = 0; 401 regs.R_ECX = colors; 402 regs.R_EDX = start; 403 404 regs.R_ES = SEG_ADDR(offs); 405 regs.R_DI = SEG_OFF(offs); 406 407 x86biosCall(®s, 0x10); 408 409 x86biosFree(p, 1); 410 411 return ((regs.R_AX & 0xff) != 0x4f); 412} 413 414#ifdef notyet 415static int 416vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 417 int bits) 418{ 419 x86regs_t regs; 420 int offs; 421 u_char *p; 422 int i; 423 424 p = (u_char *)x86biosAlloc(1, &offs); 425 426 bits = 8 - bits; 427 for (i = 0; i < colors; ++i) { 428 p[i*4] = b[i] >> bits; 429 p[i*4 + 1] = g[i] >> bits; 430 p[i*4 + 2] = r[i] >> bits; 431 p[i*4 + 3] = 0; 432 } 433 434 regs.R_EAX = 0x4f09; 435 regs.R_EBX = 0; 436 regs.R_ECX = colors; 437 regs.R_EDX = start; 438 439 regs.R_ES = SEG_ADDR(offs); 440 regs.R_DI = SEG_OFF(offs); 441 442 x86biosCall(®s, 0x10); 443 444 x86biosFree(p, 1); 445 446 return ((regs.R_AX & 0xff) != 0x4f); 447} 448#endif 449 450static int 451vesa_bios_state_buf_size(void) 452{ 453 x86regs_t regs; 454 455 regs.R_EAX = 0x4f04; 456 regs.R_ECX = STATE_ALL; 457 regs.R_EDX = STATE_SIZE; 458 459 x86biosCall(®s, 0x10); 460 461 if ((regs.R_AX & 0xff) != 0x4f) 462 return 0; 463 464 return regs.R_BX * 64; 465} 466 467static int 468vesa_bios_save_restore(int code, void *p, size_t size) 469{ 470 x86regs_t regs; 471 int offs; 472 u_char *buf; 473 474 if (size > VESA_BIOS_BUFSIZE) 475 return (1); 476 477 regs.R_EAX = 0x4f04; 478 regs.R_ECX = STATE_ALL; 479 regs.R_EDX = code; 480 481 buf = (u_char *)x86biosAlloc(1, &offs); 482 483 regs.R_ES = SEG_ADDR(offs); 484 regs.R_DI = SEG_OFF(offs); 485 486 bcopy(p, buf, size); 487 488 x86biosCall(®s, 0x10); 489 490 bcopy(buf, p, size); 491 492 x86biosFree(p, 1); 493 494 return ((regs.R_AX & 0xff) != 0x4f); 495} 496 497static int 498vesa_bios_get_line_length(void) 499{ 500 x86regs_t regs; 501 502 regs.R_EAX = 0x4f06; 503 regs.R_EBX = 1; 504 505 x86biosCall(®s, 0x10); 506 507 if ((regs.R_AX & 0xff) != 0x4f) 508 return -1; 509 510 return regs.R_BX; 511} 512 513static int 514vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 515{ 516 x86regs_t regs; 517 518 regs.R_EAX = 0x4f06; 519 regs.R_EBX = 0; 520 regs.R_ECX = pixel; 521 522 x86biosCall(®s, 0x10); 523 524#if VESA_DEBUG > 1 525 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 526#endif 527 if ((regs.R_AX & 0xff) != 0x4f) 528 return -1; 529 530 if (bytes) 531 *bytes = regs.R_BX; 532 if (lines) 533 *lines = regs.R_DX; 534 535 return 0; 536} 537 538#if 0 539static int 540vesa_bios_get_start(int *x, int *y) 541{ 542 x86regs_t regs; 543 544 regs.R_EAX = 0x4f07; 545 regs.R_EBX = 1; 546 547 x86biosCall(®s, 0x10); 548 549 if ((regs.R_AX & 0xff) != 0x4f) 550 return -1; 551 552 *x = regs.R_CX; 553 *y = regs.R_DX; 554 555 return 0; 556} 557#endif 558 559static int 560vesa_bios_set_start(int x, int y) 561{ 562 x86regs_t regs; 563 564 regs.R_EAX = 0x4f07; 565 regs.R_EBX = 0x80; 566 regs.R_EDX = y; 567 regs.R_ECX = x; 568 569 x86biosCall(®s, 0x10); 570 571 return ((regs.R_AX & 0xff) != 0x4f); 572} 573 574/* map a generic video mode to a known mode */ 575static int 576vesa_map_gen_mode_num(int type, int color, int mode) 577{ 578 static struct { 579 int from; 580 int to; 581 } mode_map[] = { 582 { M_TEXT_132x25, M_VESA_C132x25 }, 583 { M_TEXT_132x43, M_VESA_C132x43 }, 584 { M_TEXT_132x50, M_VESA_C132x50 }, 585 { M_TEXT_132x60, M_VESA_C132x60 }, 586 }; 587 int i; 588 589 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 590 if (mode_map[i].from == mode) 591 return mode_map[i].to; 592 } 593 return mode; 594} 595 596static int 597vesa_translate_flags(u_int16_t vflags) 598{ 599 static struct { 600 u_int16_t mask; 601 int set; 602 int reset; 603 } ftable[] = { 604 { V_MODECOLOR, V_INFO_COLOR, 0 }, 605 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 606 { V_MODELFB, V_INFO_LINEAR, 0 }, 607 }; 608 int flags; 609 int i; 610 611 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 612 flags |= (vflags & ftable[i].mask) ? 613 ftable[i].set : ftable[i].reset; 614 } 615 return flags; 616} 617 618static int 619vesa_translate_mmodel(u_int8_t vmodel) 620{ 621 static struct { 622 u_int8_t vmodel; 623 int mmodel; 624 } mtable[] = { 625 { V_MMTEXT, V_INFO_MM_TEXT }, 626 { V_MMCGA, V_INFO_MM_CGA }, 627 { V_MMHGC, V_INFO_MM_HGC }, 628 { V_MMEGA, V_INFO_MM_PLANAR }, 629 { V_MMPACKED, V_INFO_MM_PACKED }, 630 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 631 }; 632 int i; 633 634 for (i = 0; mtable[i].mmodel >= 0; ++i) { 635 if (mtable[i].vmodel == vmodel) 636 return mtable[i].mmodel; 637 } 638 return V_INFO_MM_OTHER; 639} 640 641static int 642vesa_bios_init(void) 643{ 644 static struct vesa_info buf; 645 struct vesa_mode vmode; 646 video_info_t *p; 647 x86regs_t regs; 648 int offs; 649 u_char *vmbuf; 650 int is_via_cle266; 651 int modes; 652 int i; 653 654 if (vesa_init_done) 655 return 0; 656 657 has_vesa_bios = FALSE; 658 vesa_adp_info = NULL; 659 vesa_vmode_max = 0; 660 vesa_vmode[0].vi_mode = EOT; 661 662 vmbuf = (u_char *)x86biosAlloc(1, &offs); 663 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 664 665 regs.R_EAX = 0x4f00; 666 regs.R_ES = SEG_ADDR(offs); 667 regs.R_DI = SEG_OFF(offs); 668 669 x86biosCall(®s, 0x10); 670 671 if (((regs.R_AX & 0xff) != 0x4f) || bcmp("VESA", vmbuf, 4)) 672 return 1; 673 674 bcopy(vmbuf, &buf, sizeof(buf)); 675 676 vesa_adp_info = &buf; 677 if (bootverbose) { 678 printf("VESA: information block\n"); 679 dump_buffer((u_char *)&buf, sizeof(buf)); 680 } 681 if (vesa_adp_info->v_version < 0x0102) { 682 printf("VESA: VBE version %d.%d is not supported; " 683 "version 1.2 or later is required.\n", 684 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 685 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 686 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 687 + (vesa_adp_info->v_version & 0x000f)); 688 return 1; 689 } 690 691 vesa_oemstr = (char *)x86biosOffs(FARP(vesa_adp_info->v_oemstr)); 692 693 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0; 694 695 if (vesa_adp_info->v_version >= 0x0200) { 696 vesa_venderstr = (char *)x86biosOffs(FARP(vesa_adp_info->v_venderstr)); 697 vesa_prodstr = (char *)x86biosOffs(FARP(vesa_adp_info->v_prodstr)); 698 vesa_revstr = (char *)x86biosOffs(FARP(vesa_adp_info->v_revstr)); 699 } 700 701 vesa_vmodetab = (uint16_t *)x86biosOffs(FARP(vesa_adp_info->v_modetable)); 702 703 if (vesa_vmodetab == NULL) 704 return 1; 705 706 for (i = 0, modes = 0; 707 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 708 && (vesa_vmodetab[i] != 0xffff); ++i) { 709 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 710 continue; 711 712 /* reject unsupported modes */ 713#if 0 714 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO 715 | V_MODENONVGA)) 716 != (V_MODESUPP | V_MODEOPTINFO)) 717 continue; 718#else 719 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 720#if VESA_DEBUG > 1 721 printf( 722 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n", 723 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 724 vmode.v_width, vmode.v_height, vmode.v_bpp, 725 vmode.v_modeattr); 726#endif 727 continue; 728 } 729#endif 730 731 /* expand the array if necessary */ 732 if (modes >= vesa_vmode_max) { 733 vesa_vmode_max += MODE_TABLE_DELTA; 734 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1), 735 M_DEVBUF, M_WAITOK); 736#if VESA_DEBUG > 1 737 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 738 modes, vesa_vmode_max); 739#endif 740 if (modes > 0) { 741 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 742 free(vesa_vmode, M_DEVBUF); 743 } 744 vesa_vmode = p; 745 } 746 747#if VESA_DEBUG > 1 748 printf("Found VESA %s mode: %d x %d x %d bpp\n", 749 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 750 vmode.v_width, vmode.v_height, vmode.v_bpp); 751#endif 752 if (is_via_cle266) { 753 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 754 vmode.v_width &= 0xff; 755 vmode.v_waseg = 0xb8000 >> 4; 756 } 757 } 758 759 /* copy some fields */ 760 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 761 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 762 vesa_vmode[modes].vi_width = vmode.v_width; 763 vesa_vmode[modes].vi_height = vmode.v_height; 764 vesa_vmode[modes].vi_depth = vmode.v_bpp; 765 vesa_vmode[modes].vi_planes = vmode.v_planes; 766 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 767 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 768 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4; 769 /* XXX window B */ 770 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024; 771 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024; 772 if (vmode.v_modeattr & V_MODELFB) 773 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 774 else 775 vesa_vmode[modes].vi_buffer = 0; 776 /* XXX */ 777 vesa_vmode[modes].vi_buffer_size 778 = vesa_adp_info->v_memsize*64*1024; 779#if 0 780 if (vmode.v_offscreen > vmode.v_lfb) 781 vesa_vmode[modes].vi_buffer_size 782 = vmode.v_offscreen + vmode.v_offscreensize*1024 783 - vmode.v_lfb; 784 else 785 vesa_vmode[modes].vi_buffer_size 786 = vmode.v_offscreen + vmode.v_offscreensize * 1024; 787#endif 788 vesa_vmode[modes].vi_mem_model 789 = vesa_translate_mmodel(vmode.v_memmodel); 790 vesa_vmode[modes].vi_pixel_fields[0] = 0; 791 vesa_vmode[modes].vi_pixel_fields[1] = 0; 792 vesa_vmode[modes].vi_pixel_fields[2] = 0; 793 vesa_vmode[modes].vi_pixel_fields[3] = 0; 794 vesa_vmode[modes].vi_pixel_fsizes[0] = 0; 795 vesa_vmode[modes].vi_pixel_fsizes[1] = 0; 796 vesa_vmode[modes].vi_pixel_fsizes[2] = 0; 797 vesa_vmode[modes].vi_pixel_fsizes[3] = 0; 798 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) { 799 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 800 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) { 801 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 802 vesa_vmode[modes].vi_pixel_fields[0] 803 = vmode.v_redfieldpos; 804 vesa_vmode[modes].vi_pixel_fields[1] 805 = vmode.v_greenfieldpos; 806 vesa_vmode[modes].vi_pixel_fields[2] 807 = vmode.v_bluefieldpos; 808 vesa_vmode[modes].vi_pixel_fields[3] 809 = vmode.v_resfieldpos; 810 vesa_vmode[modes].vi_pixel_fsizes[0] 811 = vmode.v_redmasksize; 812 vesa_vmode[modes].vi_pixel_fsizes[1] 813 = vmode.v_greenmasksize; 814 vesa_vmode[modes].vi_pixel_fsizes[2] 815 = vmode.v_bluemasksize; 816 vesa_vmode[modes].vi_pixel_fsizes[3] 817 = vmode.v_resmasksize; 818 } else { 819 vesa_vmode[modes].vi_pixel_size = 0; 820 } 821 822 vesa_vmode[modes].vi_flags 823 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 824 ++modes; 825 } 826 vesa_vmode[modes].vi_mode = EOT; 827 828 x86biosFree(vmbuf, 1); 829 830 if (bootverbose) 831 printf("VESA: %d mode(s) found\n", modes); 832 833 has_vesa_bios = (modes > 0); 834 if (!has_vesa_bios) 835 return (1); 836 837 return (0); 838} 839 840static void 841vesa_clear_modes(video_info_t *info, int color) 842{ 843 while (info->vi_mode != EOT) { 844 if ((info->vi_flags & V_INFO_COLOR) != color) 845 info->vi_mode = NA; 846 ++info; 847 } 848} 849 850static vm_offset_t 851vesa_map_buffer(u_int paddr, size_t size) 852{ 853 vm_offset_t vaddr; 854 u_int off; 855 856 off = paddr - trunc_page(paddr); 857 vaddr = (vm_offset_t)pmap_mapdev_attr(paddr - off, size + off, 858 PAT_WRITE_COMBINING); 859#if VESA_DEBUG > 1 860 printf("vesa_map_buffer: paddr:%x vaddr:%tx size:%zx off:%x\n", 861 paddr, vaddr, size, off); 862#endif 863 return (vaddr + off); 864} 865 866static void 867vesa_unmap_buffer(vm_offset_t vaddr, size_t size) 868{ 869#if VESA_DEBUG > 1 870 printf("vesa_unmap_buffer: vaddr:%tx size:%zx\n", vaddr, size); 871#endif 872 kmem_free(kernel_map, vaddr, size); 873} 874 875/* entry points */ 876 877static int 878vesa_configure(int flags) 879{ 880 video_adapter_t *adp; 881 int adapters; 882 int error; 883 int i; 884 885 if (vesa_init_done) 886 return 0; 887 if (flags & VIO_PROBE_ONLY) 888 return 0; /* XXX */ 889 890 /* 891 * If the VESA module has already been loaded, abort loading 892 * the module this time. 893 */ 894 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 895 if (adp->va_flags & V_ADP_VESA) 896 return ENXIO; 897 if (adp->va_type == KD_VGA) 898 break; 899 } 900 /* 901 * The VGA adapter is not found. This is because either 902 * 1) the VGA driver has not been initialized, or 2) the VGA card 903 * is not present. If 1) is the case, we shall defer 904 * initialization for now and try again later. 905 */ 906 if (adp == NULL) { 907 vga_sub_configure = vesa_configure; 908 return ENODEV; 909 } 910 911 /* count number of registered adapters */ 912 for (++i; vid_get_adapter(i) != NULL; ++i) 913 ; 914 adapters = i; 915 916 /* call VESA BIOS */ 917 vesa_adp = adp; 918 if (vesa_bios_init()) { 919 vesa_adp = NULL; 920 return ENXIO; 921 } 922 vesa_adp->va_flags |= V_ADP_VESA; 923 924 /* remove conflicting modes if we have more than one adapter */ 925 if (adapters > 1) { 926 vesa_clear_modes(vesa_vmode, 927 (vesa_adp->va_flags & V_ADP_COLOR) ? 928 V_INFO_COLOR : 0); 929 } 930 931 if ((error = vesa_load_ioctl()) == 0) { 932 prevvidsw = vidsw[vesa_adp->va_index]; 933 vidsw[vesa_adp->va_index] = &vesavidsw; 934 vesa_init_done = TRUE; 935 } else { 936 vesa_adp = NULL; 937 return error; 938 } 939 940 return 0; 941} 942 943#if 0 944static int 945vesa_nop(void) 946{ 947 return 0; 948} 949#endif 950 951static int 952vesa_error(void) 953{ 954 return 1; 955} 956 957static int 958vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 959{ 960 return (*prevvidsw->probe)(unit, adpp, arg, flags); 961} 962 963static int 964vesa_init(int unit, video_adapter_t *adp, int flags) 965{ 966 return (*prevvidsw->init)(unit, adp, flags); 967} 968 969static int 970vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 971{ 972 int i; 973 974 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 975 return 0; 976 977 if (adp != vesa_adp) 978 return 1; 979 980 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 981 vesa_adp->va_flags & V_ADP_COLOR, mode); 982 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 983 if (vesa_vmode[i].vi_mode == NA) 984 continue; 985 if (vesa_vmode[i].vi_mode == mode) { 986 *info = vesa_vmode[i]; 987 return 0; 988 } 989 } 990 return 1; 991} 992 993static int 994vesa_query_mode(video_adapter_t *adp, video_info_t *info) 995{ 996 int i; 997 998 if ((*prevvidsw->query_mode)(adp, info) == 0) 999 return 0; 1000 if (adp != vesa_adp) 1001 return ENODEV; 1002 1003 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1004 if ((info->vi_width != 0) 1005 && (info->vi_width != vesa_vmode[i].vi_width)) 1006 continue; 1007 if ((info->vi_height != 0) 1008 && (info->vi_height != vesa_vmode[i].vi_height)) 1009 continue; 1010 if ((info->vi_cwidth != 0) 1011 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1012 continue; 1013 if ((info->vi_cheight != 0) 1014 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1015 continue; 1016 if ((info->vi_depth != 0) 1017 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1018 continue; 1019 if ((info->vi_planes != 0) 1020 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1021 continue; 1022 /* pixel format, memory model */ 1023 if ((info->vi_flags != 0) 1024 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1025 continue; 1026 *info = vesa_vmode[i]; 1027 return 0; 1028 } 1029 return ENODEV; 1030} 1031 1032static int 1033vesa_set_mode(video_adapter_t *adp, int mode) 1034{ 1035 video_info_t info; 1036 int len; 1037 1038 if (adp != vesa_adp) 1039 return (*prevvidsw->set_mode)(adp, mode); 1040 1041 mode = vesa_map_gen_mode_num(adp->va_type, 1042 adp->va_flags & V_ADP_COLOR, mode); 1043#if VESA_DEBUG > 0 1044 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1045 adp->va_mode, adp->va_mode, mode, mode); 1046#endif 1047 /* 1048 * If the current mode is a VESA mode and the new mode is not, 1049 * restore the state of the adapter first by setting one of the 1050 * standard VGA mode, so that non-standard, extended SVGA registers 1051 * are set to the state compatible with the standard VGA modes. 1052 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1053 * the new mode correctly. 1054 */ 1055 if (VESA_MODE(adp->va_mode)) { 1056 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) { 1057 int10_set_mode(adp->va_initial_bios_mode); 1058 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1059 vesa_unmap_buffer(adp->va_buffer, 1060 vesa_adp_info->v_memsize*64*1024); 1061 /* 1062 * Once (*prevvidsw->get_info)() succeeded, 1063 * (*prevvidsw->set_mode)() below won't fail... 1064 */ 1065 } 1066 } 1067 1068 /* we may not need to handle this mode after all... */ 1069 if ((*prevvidsw->set_mode)(adp, mode) == 0) 1070 return 0; 1071 1072 /* is the new mode supported? */ 1073 if (vesa_get_info(adp, mode, &info)) 1074 return 1; 1075 /* assert(VESA_MODE(mode)); */ 1076 1077#if VESA_DEBUG > 0 1078 printf("VESA: about to set a VESA mode...\n"); 1079#endif 1080 /* don't use the linear frame buffer for text modes. XXX */ 1081 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1082 info.vi_flags &= ~V_INFO_LINEAR; 1083 1084 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1085 return 1; 1086 1087 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1088 vesa_unmap_buffer(adp->va_buffer, 1089 vesa_adp_info->v_memsize*64*1024); 1090 1091#if VESA_DEBUG > 0 1092 printf("VESA: mode set!\n"); 1093#endif 1094 vesa_adp->va_mode = mode; 1095 vesa_adp->va_flags &= ~V_ADP_COLOR; 1096 vesa_adp->va_flags |= 1097 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1098 vesa_adp->va_crtc_addr = 1099 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1100 if (info.vi_flags & V_INFO_LINEAR) { 1101#if VESA_DEBUG > 1 1102 printf("VESA: setting up LFB\n"); 1103#endif 1104 vesa_adp->va_buffer = 1105 vesa_map_buffer(info.vi_buffer, 1106 vesa_adp_info->v_memsize*64*1024); 1107 vesa_adp->va_buffer_size = info.vi_buffer_size; 1108 vesa_adp->va_window = vesa_adp->va_buffer; 1109 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes; 1110 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes; 1111 } else { 1112 vesa_adp->va_buffer = 0; 1113 vesa_adp->va_buffer_size = info.vi_buffer_size; 1114 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window); 1115 vesa_adp->va_window_size = info.vi_window_size; 1116 vesa_adp->va_window_gran = info.vi_window_gran; 1117 } 1118 vesa_adp->va_window_orig = 0; 1119 len = vesa_bios_get_line_length(); 1120 if (len > 0) { 1121 vesa_adp->va_line_width = len; 1122 } else if (info.vi_flags & V_INFO_GRAPHICS) { 1123 switch (info.vi_depth/info.vi_planes) { 1124 case 1: 1125 vesa_adp->va_line_width = info.vi_width/8; 1126 break; 1127 case 2: 1128 vesa_adp->va_line_width = info.vi_width/4; 1129 break; 1130 case 4: 1131 vesa_adp->va_line_width = info.vi_width/2; 1132 break; 1133 case 8: 1134 default: /* shouldn't happen */ 1135 vesa_adp->va_line_width = info.vi_width; 1136 break; 1137 case 15: 1138 case 16: 1139 vesa_adp->va_line_width = info.vi_width*2; 1140 break; 1141 case 24: 1142 case 32: 1143 vesa_adp->va_line_width = info.vi_width*4; 1144 break; 1145 } 1146 } else { 1147 vesa_adp->va_line_width = info.vi_width; 1148 } 1149 vesa_adp->va_disp_start.x = 0; 1150 vesa_adp->va_disp_start.y = 0; 1151#if VESA_DEBUG > 0 1152 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n", 1153 info.vi_width, len, vesa_adp->va_line_width); 1154#endif 1155 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1156 1157 /* move hardware cursor out of the way */ 1158 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1159 1160 return 0; 1161} 1162 1163static int 1164vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1165 u_char *data, int ch, int count) 1166{ 1167 return (*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1168 ch, count); 1169} 1170 1171static int 1172vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1173 u_char *data, int ch, int count) 1174{ 1175 return (*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1176 ch, count); 1177} 1178 1179static int 1180vesa_show_font(video_adapter_t *adp, int page) 1181{ 1182 return (*prevvidsw->show_font)(adp, page); 1183} 1184 1185static int 1186vesa_save_palette(video_adapter_t *adp, u_char *palette) 1187{ 1188 int bits; 1189 int error; 1190 1191 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1192 && VESA_MODE(adp->va_mode)) { 1193 bits = vesa_bios_get_dac(); 1194 error = vesa_bios_save_palette(0, 256, palette, bits); 1195 if (error == 0) 1196 return 0; 1197 if (bits != 6) 1198 return error; 1199 } 1200 1201 return (*prevvidsw->save_palette)(adp, palette); 1202} 1203 1204static int 1205vesa_load_palette(video_adapter_t *adp, u_char *palette) 1206{ 1207#ifdef notyet 1208 int bits; 1209 int error; 1210 1211 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1212 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) { 1213 error = vesa_bios_load_palette(0, 256, palette, bits); 1214 if (error == 0) 1215 return 0; 1216 if (vesa_bios_set_dac(6) != 6) 1217 return 1; 1218 } 1219#endif /* notyet */ 1220 1221 return (*prevvidsw->load_palette)(adp, palette); 1222} 1223 1224static int 1225vesa_set_border(video_adapter_t *adp, int color) 1226{ 1227 return (*prevvidsw->set_border)(adp, color); 1228} 1229 1230static int 1231vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1232{ 1233 if (adp != vesa_adp) 1234 return (*prevvidsw->save_state)(adp, p, size); 1235 1236 if (vesa_state_buf_size == 0) 1237 vesa_state_buf_size = vesa_bios_state_buf_size(); 1238 if (size == 0) 1239 return (sizeof(int) + vesa_state_buf_size); 1240 else if (size < (sizeof(int) + vesa_state_buf_size)) 1241 return 1; 1242 1243 ((adp_state_t *)p)->sig = V_STATE_SIG; 1244 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1245 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1246 vesa_state_buf_size); 1247} 1248 1249static int 1250vesa_load_state(video_adapter_t *adp, void *p) 1251{ 1252 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1253 return (*prevvidsw->load_state)(adp, p); 1254 1255 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1256 vesa_state_buf_size); 1257} 1258 1259#if 0 1260static int 1261vesa_get_origin(video_adapter_t *adp, off_t *offset) 1262{ 1263 x86regs_t regs; 1264 1265 regs.R_EAX = 0x4f05; 1266 regs.R_EBX = 0x10; 1267 1268 x86biosCall(®s, 0x10); 1269 1270 if ((regs.R_AX & 0xff) != 0x4f) 1271 return 1; 1272 *offset = regs.DX * adp->va_window_gran; 1273 1274 return 0; 1275} 1276#endif 1277 1278static int 1279vesa_set_origin(video_adapter_t *adp, off_t offset) 1280{ 1281 x86regs_t regs; 1282 1283 /* 1284 * This function should return as quickly as possible to 1285 * maintain good performance of the system. For this reason, 1286 * error checking is kept minimal and let the VESA BIOS to 1287 * detect error. 1288 */ 1289 if (adp != vesa_adp) 1290 return (*prevvidsw->set_win_org)(adp, offset); 1291 1292 /* if this is a linear frame buffer, do nothing */ 1293 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1294 return 0; 1295 /* XXX */ 1296 if (adp->va_window_gran == 0) 1297 return 1; 1298 1299 regs.R_EAX = 0x4f05; 1300 regs.R_EBX = 0; 1301 regs.R_EDX = offset / adp->va_window_gran; 1302 x86biosCall(®s, 0x10); 1303 1304 if ((regs.R_AX & 0xff) != 0x4f) 1305 return 1; 1306 1307 regs.R_EAX = 0x4f05; 1308 regs.R_EBX = 1; 1309 regs.R_EDX = offset / adp->va_window_gran; 1310 x86biosCall(®s, 0x10); 1311 1312 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1313 return 0; /* XXX */ 1314} 1315 1316static int 1317vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1318{ 1319 return (*prevvidsw->read_hw_cursor)(adp, col, row); 1320} 1321 1322static int 1323vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1324{ 1325 return (*prevvidsw->set_hw_cursor)(adp, col, row); 1326} 1327 1328static int 1329vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1330 int celsize, int blink) 1331{ 1332 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1333 blink); 1334} 1335 1336static int 1337vesa_blank_display(video_adapter_t *adp, int mode) 1338{ 1339 /* XXX: use VESA DPMS */ 1340 return (*prevvidsw->blank_display)(adp, mode); 1341} 1342 1343static int 1344vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1345 int prot) 1346{ 1347#if VESA_DEBUG > 0 1348 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%tx\n", 1349 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1350#endif 1351 1352 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) { 1353 /* va_window_size == va_buffer_size/vi_planes */ 1354 /* XXX: is this correct? */ 1355 if (offset > adp->va_window_size - PAGE_SIZE) 1356 return -1; 1357 *paddr = adp->va_info.vi_buffer + offset; 1358 return 0; 1359 } else { 1360 return (*prevvidsw->mmap)(adp, offset, paddr, prot); 1361 } 1362} 1363 1364static int 1365vesa_clear(video_adapter_t *adp) 1366{ 1367 return (*prevvidsw->clear)(adp); 1368} 1369 1370static int 1371vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1372{ 1373 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy); 1374} 1375 1376static int 1377vesa_bitblt(video_adapter_t *adp,...) 1378{ 1379 /* FIXME */ 1380 return 1; 1381} 1382 1383static int 1384get_palette(video_adapter_t *adp, int base, int count, 1385 u_char *red, u_char *green, u_char *blue, u_char *trans) 1386{ 1387 u_char *r; 1388 u_char *g; 1389 u_char *b; 1390 int bits; 1391 int error; 1392 1393 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256)) 1394 return 1; 1395 if ((base + count) > 256) 1396 return 1; 1397 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)) 1398 return 1; 1399 1400 bits = vesa_bios_get_dac(); 1401 if (bits <= 6) 1402 return 1; 1403 1404 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1405 g = r + count; 1406 b = g + count; 1407 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1408 if (error == 0) { 1409 copyout(r, red, count); 1410 copyout(g, green, count); 1411 copyout(b, blue, count); 1412 if (trans != NULL) { 1413 bzero(r, count); 1414 copyout(r, trans, count); 1415 } 1416 } 1417 free(r, M_DEVBUF); 1418 1419 /* if error && bits != 6 at this point, we are in trouble... XXX */ 1420 return error; 1421} 1422 1423static int 1424set_palette(video_adapter_t *adp, int base, int count, 1425 u_char *red, u_char *green, u_char *blue, u_char *trans) 1426{ 1427 return 1; 1428#ifdef notyet 1429 u_char *r; 1430 u_char *g; 1431 u_char *b; 1432 int bits; 1433 int error; 1434 1435 if ((base < 0) || (base >= 256) || (base + count > 256)) 1436 return 1; 1437 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode) 1438 || ((bits = vesa_bios_set_dac(8)) <= 6)) 1439 return 1; 1440 1441 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1442 g = r + count; 1443 b = g + count; 1444 copyin(red, r, count); 1445 copyin(green, g, count); 1446 copyin(blue, b, count); 1447 1448 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1449 free(r, M_DEVBUF); 1450 if (error == 0) 1451 return 0; 1452 1453 /* if the following call fails, we are in trouble... XXX */ 1454 vesa_bios_set_dac(6); 1455 return 1; 1456#endif /* notyet */ 1457} 1458 1459static int 1460vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1461{ 1462 int bytes; 1463 1464 if (adp != vesa_adp) 1465 return (*prevvidsw->ioctl)(adp, cmd, arg); 1466 1467 switch (cmd) { 1468 case FBIO_SETWINORG: /* set frame buffer window origin */ 1469 if (!VESA_MODE(adp->va_mode)) 1470 return (*prevvidsw->ioctl)(adp, cmd, arg); 1471 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1472 1473 case FBIO_SETDISPSTART: /* set display start address */ 1474 if (!VESA_MODE(adp->va_mode)) 1475 return (*prevvidsw->ioctl)(adp, cmd, arg); 1476 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1477 ((video_display_start_t *)arg)->y)) 1478 return ENODEV; 1479 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1480 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1481 return 0; 1482 1483 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1484 if (!VESA_MODE(adp->va_mode)) 1485 return (*prevvidsw->ioctl)(adp, cmd, arg); 1486 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1487 return ENODEV; 1488 adp->va_line_width = bytes; 1489#if VESA_DEBUG > 1 1490 printf("new line width:%d\n", adp->va_line_width); 1491#endif 1492 return 0; 1493 1494 case FBIO_GETPALETTE: /* get color palette */ 1495 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1496 ((video_color_palette_t *)arg)->count, 1497 ((video_color_palette_t *)arg)->red, 1498 ((video_color_palette_t *)arg)->green, 1499 ((video_color_palette_t *)arg)->blue, 1500 ((video_color_palette_t *)arg)->transparent)) 1501 return (*prevvidsw->ioctl)(adp, cmd, arg); 1502 return 0; 1503 1504 1505 case FBIO_SETPALETTE: /* set color palette */ 1506 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1507 ((video_color_palette_t *)arg)->count, 1508 ((video_color_palette_t *)arg)->red, 1509 ((video_color_palette_t *)arg)->green, 1510 ((video_color_palette_t *)arg)->blue, 1511 ((video_color_palette_t *)arg)->transparent)) 1512 return (*prevvidsw->ioctl)(adp, cmd, arg); 1513 return 0; 1514 1515 case FBIOGETCMAP: /* get color palette */ 1516 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1517 ((struct fbcmap *)arg)->count, 1518 ((struct fbcmap *)arg)->red, 1519 ((struct fbcmap *)arg)->green, 1520 ((struct fbcmap *)arg)->blue, NULL)) 1521 return (*prevvidsw->ioctl)(adp, cmd, arg); 1522 return 0; 1523 1524 case FBIOPUTCMAP: /* set color palette */ 1525 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1526 ((struct fbcmap *)arg)->count, 1527 ((struct fbcmap *)arg)->red, 1528 ((struct fbcmap *)arg)->green, 1529 ((struct fbcmap *)arg)->blue, NULL)) 1530 return (*prevvidsw->ioctl)(adp, cmd, arg); 1531 return 0; 1532 1533 default: 1534 return (*prevvidsw->ioctl)(adp, cmd, arg); 1535 } 1536} 1537 1538static int 1539vesa_diag(video_adapter_t *adp, int level) 1540{ 1541 int error; 1542 1543 /* call the previous handler first */ 1544 error = (*prevvidsw->diag)(adp, level); 1545 if (error) 1546 return error; 1547 1548 if (adp != vesa_adp) 1549 return 1; 1550 1551 if (level <= 0) 1552 return 0; 1553 1554 return 0; 1555} 1556 1557static int 1558vesa_bios_info(int level) 1559{ 1560#if VESA_DEBUG > 1 1561 struct vesa_mode vmode; 1562 int i; 1563#endif 1564 1565 if (bootverbose) { 1566 /* general adapter information */ 1567 printf( 1568 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1569 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 + 1570 ((vesa_adp_info->v_version & 0x0f00) >> 8), 1571 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 + 1572 (vesa_adp_info->v_version & 0x000f), 1573 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1574 vesa_vmodetab, vesa_adp_info->v_modetable); 1575 1576 /* OEM string */ 1577 if (vesa_oemstr != NULL) 1578 printf("VESA: %s\n", vesa_oemstr); 1579 } 1580 1581 if (level <= 0) 1582 return 0; 1583 1584 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) { 1585 /* vender name, product name, product revision */ 1586 printf("VESA: %s %s %s\n", 1587 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1588 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1589 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1590 } 1591 1592#if VESA_DEBUG > 1 1593 /* mode information */ 1594 for (i = 0; 1595 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1596 && (vesa_vmodetab[i] != 0xffff); ++i) { 1597 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1598 continue; 1599 1600 /* print something for diagnostic purpose */ 1601 printf("VESA: mode:0x%03x, flags:0x%04x", 1602 vesa_vmodetab[i], vmode.v_modeattr); 1603 if (vmode.v_modeattr & V_MODEOPTINFO) { 1604 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1605 printf(", G %dx%dx%d %d, ", 1606 vmode.v_width, vmode.v_height, 1607 vmode.v_bpp, vmode.v_planes); 1608 } else { 1609 printf(", T %dx%d, ", 1610 vmode.v_width, vmode.v_height); 1611 } 1612 printf("font:%dx%d, ", 1613 vmode.v_cwidth, vmode.v_cheight); 1614 printf("pages:%d, mem:%d", 1615 vmode.v_ipages + 1, vmode.v_memmodel); 1616 } 1617 if (vmode.v_modeattr & V_MODELFB) { 1618 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1619 vmode.v_lfb, vmode.v_offscreen, 1620 vmode.v_offscreensize*1024); 1621 } 1622 printf("\n"); 1623 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1624 vmode.v_waseg, vmode.v_waattr, 1625 vmode.v_wbseg, vmode.v_wbattr); 1626 printf("size:%dk, gran:%dk\n", 1627 vmode.v_wsize, vmode.v_wgran); 1628 } 1629#endif /* VESA_DEBUG > 1 */ 1630 1631 return 0; 1632} 1633 1634/* module loading */ 1635 1636static int 1637vesa_load(void) 1638{ 1639 int error; 1640 int s; 1641 1642 if (vesa_init_done) 1643 return 0; 1644 1645 /* locate a VGA adapter */ 1646 s = spltty(); 1647 vesa_adp = NULL; 1648 error = vesa_configure(0); 1649 splx(s); 1650 1651 if (error == 0) 1652 vesa_bios_info(bootverbose); 1653 1654 return error; 1655} 1656 1657static int 1658vesa_unload(void) 1659{ 1660 u_char palette[256*3]; 1661 int error; 1662 int bits; 1663 int s; 1664 1665 /* if the adapter is currently in a VESA mode, don't unload */ 1666 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1667 return EBUSY; 1668 /* 1669 * FIXME: if there is at least one vty which is in a VESA mode, 1670 * we shouldn't be unloading! XXX 1671 */ 1672 1673 s = spltty(); 1674 if ((error = vesa_unload_ioctl()) == 0) { 1675 if (vesa_adp != NULL) { 1676 if (vesa_adp_info->v_flags & V_DAC8) { 1677 bits = vesa_bios_get_dac(); 1678 if (bits > 6) { 1679 vesa_bios_save_palette(0, 256, 1680 palette, bits); 1681 vesa_bios_set_dac(6); 1682 vesa_bios_load_palette(0, 256, 1683 palette, 6); 1684 } 1685 } 1686 vesa_adp->va_flags &= ~V_ADP_VESA; 1687 vidsw[vesa_adp->va_index] = prevvidsw; 1688 } 1689 } 1690 splx(s); 1691 1692 return error; 1693} 1694 1695static int 1696vesa_mod_event(module_t mod, int type, void *data) 1697{ 1698 switch (type) { 1699 case MOD_LOAD: 1700 return vesa_load(); 1701 case MOD_UNLOAD: 1702 return vesa_unload(); 1703 default: 1704 return EOPNOTSUPP; 1705 } 1706 return 0; 1707} 1708 1709static moduledata_t vesa_mod = { 1710 "vesa", 1711 vesa_mod_event, 1712 NULL, 1713}; 1714 1715DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1716MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1717 1718#endif /* VGA_NO_MODE_CHANGE */ 1719