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sys/dev/fb/vesa.c
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1 /*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * Copyright (c) 2009-2010 Jung-uk Kim <jkim@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer as 11 * the first lines of this file unmodified. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD: releng/8.2/sys/dev/fb/vesa.c 210304 2010-07-20 18:43:15Z 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/module.h> 41 #include <sys/malloc.h> 42 #include <sys/fbio.h> 43 44 #include <vm/vm.h> 45 #include <vm/vm_extern.h> 46 #include <vm/vm_kern.h> 47 #include <vm/vm_param.h> 48 #include <vm/pmap.h> 49 50 #include <machine/pc/bios.h> 51 #include <dev/fb/vesa.h> 52 53 #include <dev/fb/fbreg.h> 54 #include <dev/fb/vgareg.h> 55 56 #include <dev/pci/pcivar.h> 57 58 #include <isa/isareg.h> 59 60 #include <compat/x86bios/x86bios.h> 61 62 #define VESA_VIA_CLE266 "VIA CLE266\r\n" 63 64 #ifndef VESA_DEBUG 65 #define VESA_DEBUG 0 66 #endif 67 68 /* VESA video adapter state buffer stub */ 69 struct adp_state { 70 int sig; 71 #define V_STATE_SIG 0x61736576 72 u_char regs[1]; 73 }; 74 typedef struct adp_state adp_state_t; 75 76 /* VESA video adapter */ 77 static video_adapter_t *vesa_adp = NULL; 78 static ssize_t vesa_state_buf_size = -1; 79 80 /* VESA functions */ 81 #if 0 82 static int vesa_nop(void); 83 #endif 84 static int vesa_error(void); 85 static vi_probe_t vesa_probe; 86 static vi_init_t vesa_init; 87 static vi_get_info_t vesa_get_info; 88 static vi_query_mode_t vesa_query_mode; 89 static vi_set_mode_t vesa_set_mode; 90 static vi_save_font_t vesa_save_font; 91 static vi_load_font_t vesa_load_font; 92 static vi_show_font_t vesa_show_font; 93 static vi_save_palette_t vesa_save_palette; 94 static vi_load_palette_t vesa_load_palette; 95 static vi_set_border_t vesa_set_border; 96 static vi_save_state_t vesa_save_state; 97 static vi_load_state_t vesa_load_state; 98 static vi_set_win_org_t vesa_set_origin; 99 static vi_read_hw_cursor_t vesa_read_hw_cursor; 100 static vi_set_hw_cursor_t vesa_set_hw_cursor; 101 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 102 static vi_blank_display_t vesa_blank_display; 103 static vi_mmap_t vesa_mmap; 104 static vi_ioctl_t vesa_ioctl; 105 static vi_clear_t vesa_clear; 106 static vi_fill_rect_t vesa_fill_rect; 107 static vi_bitblt_t vesa_bitblt; 108 static vi_diag_t vesa_diag; 109 static int vesa_bios_info(int level); 110 111 static video_switch_t vesavidsw = { 112 vesa_probe, 113 vesa_init, 114 vesa_get_info, 115 vesa_query_mode, 116 vesa_set_mode, 117 vesa_save_font, 118 vesa_load_font, 119 vesa_show_font, 120 vesa_save_palette, 121 vesa_load_palette, 122 vesa_set_border, 123 vesa_save_state, 124 vesa_load_state, 125 vesa_set_origin, 126 vesa_read_hw_cursor, 127 vesa_set_hw_cursor, 128 vesa_set_hw_cursor_shape, 129 vesa_blank_display, 130 vesa_mmap, 131 vesa_ioctl, 132 vesa_clear, 133 vesa_fill_rect, 134 vesa_bitblt, 135 vesa_error, 136 vesa_error, 137 vesa_diag, 138 }; 139 140 static video_switch_t *prevvidsw; 141 142 /* VESA BIOS video modes */ 143 #define VESA_MAXMODES 64 144 #define EOT (-1) 145 #define NA (-2) 146 147 #define MODE_TABLE_DELTA 8 148 149 static int vesa_vmode_max = 0; 150 static video_info_t vesa_vmode_empty = { EOT }; 151 static video_info_t *vesa_vmode = &vesa_vmode_empty; 152 153 static int vesa_init_done = FALSE; 154 static int has_vesa_bios = FALSE; 155 static struct vesa_info *vesa_adp_info = NULL; 156 static u_int16_t *vesa_vmodetab = NULL; 157 static char *vesa_oemstr = NULL; 158 static char *vesa_venderstr = NULL; 159 static char *vesa_prodstr = NULL; 160 static char *vesa_revstr = NULL; 161 162 /* local macros and functions */ 163 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 164 165 static int int10_set_mode(int mode); 166 static int vesa_bios_post(void); 167 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 168 static int vesa_bios_set_mode(int mode); 169 #if 0 170 static int vesa_bios_get_dac(void); 171 #endif 172 static int vesa_bios_set_dac(int bits); 173 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 174 int bits); 175 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 176 u_char *b, int bits); 177 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 178 int bits); 179 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 180 u_char *b, int bits); 181 #define STATE_SIZE 0 182 #define STATE_SAVE 1 183 #define STATE_LOAD 2 184 #define STATE_HW (1<<0) 185 #define STATE_DATA (1<<1) 186 #define STATE_DAC (1<<2) 187 #define STATE_REG (1<<3) 188 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 189 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 190 static ssize_t vesa_bios_state_buf_size(void); 191 static int vesa_bios_save_restore(int code, void *p, size_t size); 192 #ifdef MODE_TABLE_BROKEN 193 static int vesa_bios_get_line_length(void); 194 #endif 195 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 196 #if 0 197 static int vesa_bios_get_start(int *x, int *y); 198 #endif 199 static int vesa_bios_set_start(int x, int y); 200 static int vesa_map_gen_mode_num(int type, int color, int mode); 201 static int vesa_translate_flags(u_int16_t vflags); 202 static int vesa_translate_mmodel(u_int8_t vmodel); 203 static int vesa_get_bpscanline(struct vesa_mode *vmode); 204 static int vesa_bios_init(void); 205 static void vesa_clear_modes(video_info_t *info, int color); 206 207 #if 0 208 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 209 #endif 210 211 /* INT 10 BIOS calls */ 212 static int 213 int10_set_mode(int mode) 214 { 215 x86regs_t regs; 216 217 x86bios_init_regs(®s); 218 regs.R_AL = mode; 219 220 x86bios_intr(®s, 0x10); 221 222 return (0); 223 } 224 225 static int 226 vesa_bios_post(void) 227 { 228 x86regs_t regs; 229 devclass_t dc; 230 device_t *devs; 231 device_t dev; 232 int count, i, is_pci; 233 234 if (x86bios_get_orm(0xc0000) == NULL) 235 return (1); 236 237 dev = NULL; 238 is_pci = 0; 239 240 /* Find the matching PCI video controller. */ 241 dc = devclass_find("vgapci"); 242 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 243 for (i = 0; i < count; i++) 244 if (device_get_flags(devs[i]) != 0 && 245 x86bios_match_device(0xc0000, devs[i])) { 246 dev = devs[i]; 247 is_pci = 1; 248 break; 249 } 250 free(devs, M_TEMP); 251 } 252 253 /* Try VGA if a PCI device is not found. */ 254 if (dev == NULL) { 255 dc = devclass_find(VGA_DRIVER_NAME); 256 if (dc != NULL) 257 dev = devclass_get_device(dc, 0); 258 } 259 260 if (bootverbose) 261 printf("%s: calling BIOS POST\n", 262 dev == NULL ? "VESA" : device_get_nameunit(dev)); 263 264 x86bios_init_regs(®s); 265 if (is_pci) { 266 regs.R_AH = pci_get_bus(dev); 267 regs.R_AL = (pci_get_slot(dev) << 3) | 268 (pci_get_function(dev) & 0x07); 269 } 270 regs.R_DL = 0x80; 271 x86bios_call(®s, 0xc000, 0x0003); 272 273 if (x86bios_get_intr(0x10) == 0) 274 return (1); 275 276 return (0); 277 } 278 279 /* VESA BIOS calls */ 280 static int 281 vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 282 { 283 x86regs_t regs; 284 uint32_t offs; 285 void *buf; 286 287 buf = x86bios_alloc(&offs, sizeof(*vmode)); 288 if (buf == NULL) 289 return (1); 290 291 x86bios_init_regs(®s); 292 regs.R_AX = 0x4f01; 293 regs.R_CX = mode; 294 295 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 296 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 297 298 x86bios_intr(®s, 0x10); 299 300 if (regs.R_AX != 0x004f) { 301 x86bios_free(buf, sizeof(*vmode)); 302 return (1); 303 } 304 305 bcopy(buf, vmode, sizeof(*vmode)); 306 x86bios_free(buf, sizeof(*vmode)); 307 308 return (0); 309 } 310 311 static int 312 vesa_bios_set_mode(int mode) 313 { 314 x86regs_t regs; 315 316 x86bios_init_regs(®s); 317 regs.R_AX = 0x4f02; 318 regs.R_BX = mode; 319 320 x86bios_intr(®s, 0x10); 321 322 return (regs.R_AX != 0x004f); 323 } 324 325 #if 0 326 static int 327 vesa_bios_get_dac(void) 328 { 329 x86regs_t regs; 330 331 x86bios_init_regs(®s); 332 regs.R_AX = 0x4f08; 333 regs.R_BL = 1; 334 335 x86bios_intr(®s, 0x10); 336 337 if (regs.R_AX != 0x004f) 338 return (6); 339 340 return (regs.R_BH); 341 } 342 #endif 343 344 static int 345 vesa_bios_set_dac(int bits) 346 { 347 x86regs_t regs; 348 349 x86bios_init_regs(®s); 350 regs.R_AX = 0x4f08; 351 /* regs.R_BL = 0; */ 352 regs.R_BH = bits; 353 354 x86bios_intr(®s, 0x10); 355 356 if (regs.R_AX != 0x004f) 357 return (6); 358 359 return (regs.R_BH); 360 } 361 362 static int 363 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 364 { 365 x86regs_t regs; 366 uint32_t offs; 367 u_char *p; 368 int i; 369 370 p = (u_char *)x86bios_alloc(&offs, colors * 4); 371 if (p == NULL) 372 return (1); 373 374 x86bios_init_regs(®s); 375 regs.R_AX = 0x4f09; 376 regs.R_BL = 1; 377 regs.R_CX = colors; 378 regs.R_DX = start; 379 380 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 381 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 382 383 x86bios_intr(®s, 0x10); 384 385 if (regs.R_AX != 0x004f) { 386 x86bios_free(p, colors * 4); 387 return (1); 388 } 389 390 bits = 8 - bits; 391 for (i = 0; i < colors; ++i) { 392 palette[i * 3] = p[i * 4 + 2] << bits; 393 palette[i * 3 + 1] = p[i * 4 + 1] << bits; 394 palette[i * 3 + 2] = p[i * 4] << bits; 395 } 396 x86bios_free(p, colors * 4); 397 398 return (0); 399 } 400 401 static int 402 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 403 int bits) 404 { 405 x86regs_t regs; 406 uint32_t offs; 407 u_char *p; 408 int i; 409 410 p = (u_char *)x86bios_alloc(&offs, colors * 4); 411 if (p == NULL) 412 return (1); 413 414 x86bios_init_regs(®s); 415 regs.R_AX = 0x4f09; 416 regs.R_BL = 1; 417 regs.R_CX = colors; 418 regs.R_DX = start; 419 420 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 421 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 422 423 x86bios_intr(®s, 0x10); 424 425 if (regs.R_AX != 0x004f) { 426 x86bios_free(p, colors * 4); 427 return (1); 428 } 429 430 bits = 8 - bits; 431 for (i = 0; i < colors; ++i) { 432 r[i] = p[i * 4 + 2] << bits; 433 g[i] = p[i * 4 + 1] << bits; 434 b[i] = p[i * 4] << bits; 435 } 436 x86bios_free(p, colors * 4); 437 438 return (0); 439 } 440 441 static int 442 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 443 { 444 x86regs_t regs; 445 uint32_t offs; 446 u_char *p; 447 int i; 448 449 p = (u_char *)x86bios_alloc(&offs, colors * 4); 450 if (p == NULL) 451 return (1); 452 453 x86bios_init_regs(®s); 454 regs.R_AX = 0x4f09; 455 /* regs.R_BL = 0; */ 456 regs.R_CX = colors; 457 regs.R_DX = start; 458 459 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 460 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 461 462 bits = 8 - bits; 463 for (i = 0; i < colors; ++i) { 464 p[i * 4] = palette[i * 3 + 2] >> bits; 465 p[i * 4 + 1] = palette[i * 3 + 1] >> bits; 466 p[i * 4 + 2] = palette[i * 3] >> bits; 467 p[i * 4 + 3] = 0; 468 } 469 x86bios_intr(®s, 0x10); 470 x86bios_free(p, colors * 4); 471 472 return (regs.R_AX != 0x004f); 473 } 474 475 static int 476 vesa_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 uint32_t offs; 481 u_char *p; 482 int i; 483 484 p = (u_char *)x86bios_alloc(&offs, colors * 4); 485 if (p == NULL) 486 return (1); 487 488 x86bios_init_regs(®s); 489 regs.R_AX = 0x4f09; 490 /* regs.R_BL = 0; */ 491 regs.R_CX = colors; 492 regs.R_DX = start; 493 494 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 495 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 496 497 bits = 8 - bits; 498 for (i = 0; i < colors; ++i) { 499 p[i * 4] = b[i] >> bits; 500 p[i * 4 + 1] = g[i] >> bits; 501 p[i * 4 + 2] = r[i] >> bits; 502 p[i * 4 + 3] = 0; 503 } 504 x86bios_intr(®s, 0x10); 505 x86bios_free(p, colors * 4); 506 507 return (regs.R_AX != 0x004f); 508 } 509 510 static ssize_t 511 vesa_bios_state_buf_size(void) 512 { 513 x86regs_t regs; 514 515 x86bios_init_regs(®s); 516 regs.R_AX = 0x4f04; 517 /* regs.R_DL = STATE_SIZE; */ 518 regs.R_CX = STATE_ALL; 519 520 x86bios_intr(®s, 0x10); 521 522 if (regs.R_AX != 0x004f) 523 return (0); 524 525 return (regs.R_BX * 64); 526 } 527 528 static int 529 vesa_bios_save_restore(int code, void *p, size_t size) 530 { 531 x86regs_t regs; 532 uint32_t offs; 533 void *buf; 534 535 if (code != STATE_SAVE && code != STATE_LOAD) 536 return (1); 537 538 buf = x86bios_alloc(&offs, size); 539 if (buf == NULL) 540 return (1); 541 542 x86bios_init_regs(®s); 543 regs.R_AX = 0x4f04; 544 regs.R_DL = code; 545 regs.R_CX = STATE_ALL; 546 547 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 548 regs.R_BX = X86BIOS_PHYSTOOFF(offs); 549 550 switch (code) { 551 case STATE_SAVE: 552 x86bios_intr(®s, 0x10); 553 bcopy(buf, p, size); 554 break; 555 case STATE_LOAD: 556 bcopy(p, buf, size); 557 x86bios_intr(®s, 0x10); 558 break; 559 } 560 x86bios_free(buf, size); 561 562 return (regs.R_AX != 0x004f); 563 } 564 565 #ifdef MODE_TABLE_BROKEN 566 static int 567 vesa_bios_get_line_length(void) 568 { 569 x86regs_t regs; 570 571 x86bios_init_regs(®s); 572 regs.R_AX = 0x4f06; 573 regs.R_BL = 1; 574 575 x86bios_intr(®s, 0x10); 576 577 if (regs.R_AX != 0x004f) 578 return (-1); 579 580 return (regs.R_BX); 581 } 582 #endif 583 584 static int 585 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 586 { 587 x86regs_t regs; 588 589 x86bios_init_regs(®s); 590 regs.R_AX = 0x4f06; 591 /* regs.R_BL = 0; */ 592 regs.R_CX = pixel; 593 594 x86bios_intr(®s, 0x10); 595 596 #if VESA_DEBUG > 1 597 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 598 #endif 599 if (regs.R_AX != 0x004f) 600 return (-1); 601 602 if (bytes != NULL) 603 *bytes = regs.R_BX; 604 if (lines != NULL) 605 *lines = regs.R_DX; 606 607 return (0); 608 } 609 610 #if 0 611 static int 612 vesa_bios_get_start(int *x, int *y) 613 { 614 x86regs_t regs; 615 616 x86bios_init_regs(®s); 617 regs.R_AX = 0x4f07; 618 regs.R_BL = 1; 619 620 x86bios_intr(®s, 0x10); 621 622 if (regs.R_AX != 0x004f) 623 return (-1); 624 625 *x = regs.R_CX; 626 *y = regs.R_DX; 627 628 return (0); 629 } 630 #endif 631 632 static int 633 vesa_bios_set_start(int x, int y) 634 { 635 x86regs_t regs; 636 637 x86bios_init_regs(®s); 638 regs.R_AX = 0x4f07; 639 regs.R_BL = 0x80; 640 regs.R_CX = x; 641 regs.R_DX = y; 642 643 x86bios_intr(®s, 0x10); 644 645 return (regs.R_AX != 0x004f); 646 } 647 648 /* map a generic video mode to a known mode */ 649 static int 650 vesa_map_gen_mode_num(int type, int color, int mode) 651 { 652 static struct { 653 int from; 654 int to; 655 } mode_map[] = { 656 { M_TEXT_132x25, M_VESA_C132x25 }, 657 { M_TEXT_132x43, M_VESA_C132x43 }, 658 { M_TEXT_132x50, M_VESA_C132x50 }, 659 { M_TEXT_132x60, M_VESA_C132x60 }, 660 }; 661 int i; 662 663 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 664 if (mode_map[i].from == mode) 665 return (mode_map[i].to); 666 } 667 return (mode); 668 } 669 670 static int 671 vesa_translate_flags(u_int16_t vflags) 672 { 673 static struct { 674 u_int16_t mask; 675 int set; 676 int reset; 677 } ftable[] = { 678 { V_MODECOLOR, V_INFO_COLOR, 0 }, 679 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 680 { V_MODELFB, V_INFO_LINEAR, 0 }, 681 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 682 }; 683 int flags; 684 int i; 685 686 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 687 flags |= (vflags & ftable[i].mask) ? 688 ftable[i].set : ftable[i].reset; 689 } 690 return (flags); 691 } 692 693 static int 694 vesa_translate_mmodel(u_int8_t vmodel) 695 { 696 static struct { 697 u_int8_t vmodel; 698 int mmodel; 699 } mtable[] = { 700 { V_MMTEXT, V_INFO_MM_TEXT }, 701 { V_MMCGA, V_INFO_MM_CGA }, 702 { V_MMHGC, V_INFO_MM_HGC }, 703 { V_MMEGA, V_INFO_MM_PLANAR }, 704 { V_MMPACKED, V_INFO_MM_PACKED }, 705 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 706 }; 707 int i; 708 709 for (i = 0; mtable[i].mmodel >= 0; ++i) { 710 if (mtable[i].vmodel == vmodel) 711 return (mtable[i].mmodel); 712 } 713 return (V_INFO_MM_OTHER); 714 } 715 716 static int 717 vesa_get_bpscanline(struct vesa_mode *vmode) 718 { 719 int bpsl; 720 721 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 722 /* Find the minimum length. */ 723 switch (vmode->v_bpp / vmode->v_planes) { 724 case 1: 725 bpsl = vmode->v_width / 8; 726 break; 727 case 2: 728 bpsl = vmode->v_width / 4; 729 break; 730 case 4: 731 bpsl = vmode->v_width / 2; 732 break; 733 default: 734 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 735 bpsl /= vmode->v_planes; 736 break; 737 } 738 739 /* Use VBE 3.0 information if it looks sane. */ 740 if ((vmode->v_modeattr & V_MODELFB) != 0 && 741 vesa_adp_info->v_version >= 0x0300 && 742 vmode->v_linbpscanline > bpsl) 743 return (vmode->v_linbpscanline); 744 745 /* Return the minimum if the mode table looks absurd. */ 746 if (vmode->v_bpscanline < bpsl) 747 return (bpsl); 748 } 749 750 return (vmode->v_bpscanline); 751 } 752 753 #define VESA_MAXSTR 256 754 755 #define VESA_STRCPY(dst, src) do { \ 756 char *str; \ 757 int i; \ 758 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 759 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 760 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 761 dst[i] = str[i]; \ 762 dst[i] = '\0'; \ 763 } while (0) 764 765 static int 766 vesa_bios_init(void) 767 { 768 struct vesa_mode vmode; 769 struct vesa_info *buf; 770 video_info_t *p; 771 x86regs_t regs; 772 size_t bsize; 773 size_t msize; 774 void *vmbuf; 775 uint32_t offs; 776 uint16_t vers; 777 int is_via_cle266; 778 int modes; 779 int i; 780 781 if (vesa_init_done) 782 return (0); 783 784 has_vesa_bios = FALSE; 785 vesa_adp_info = NULL; 786 vesa_vmode_max = 0; 787 vesa_vmode[0].vi_mode = EOT; 788 789 /* 790 * If the VBE real mode interrupt vector is not found, try BIOS POST. 791 */ 792 if (x86bios_get_intr(0x10) == 0) { 793 if (vesa_bios_post() != 0) 794 return (1); 795 if (bootverbose) { 796 offs = x86bios_get_intr(0x10); 797 printf("VESA: interrupt vector installed (0x%x)\n", 798 BIOS_SADDRTOLADDR(offs)); 799 } 800 } 801 802 x86bios_init_regs(®s); 803 regs.R_AX = 0x4f00; 804 805 vmbuf = x86bios_alloc(&offs, sizeof(*buf)); 806 if (vmbuf == NULL) 807 return (1); 808 809 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 810 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 811 812 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 813 x86bios_intr(®s, 0x10); 814 815 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 816 goto fail; 817 818 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 819 bcopy(vmbuf, buf, sizeof(*buf)); 820 821 if (bootverbose) { 822 printf("VESA: information block\n"); 823 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 824 } 825 826 vers = buf->v_version = le16toh(buf->v_version); 827 buf->v_oemstr = le32toh(buf->v_oemstr); 828 buf->v_flags = le32toh(buf->v_flags); 829 buf->v_modetable = le32toh(buf->v_modetable); 830 buf->v_memsize = le16toh(buf->v_memsize); 831 buf->v_revision = le16toh(buf->v_revision); 832 buf->v_venderstr = le32toh(buf->v_venderstr); 833 buf->v_prodstr = le32toh(buf->v_prodstr); 834 buf->v_revstr = le32toh(buf->v_revstr); 835 836 if (vers < 0x0102) { 837 printf("VESA: VBE version %d.%d is not supported; " 838 "version 1.2 or later is required.\n", 839 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 840 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 841 goto fail; 842 } 843 844 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 845 if (vers >= 0x0200) { 846 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 847 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 848 VESA_STRCPY(vesa_revstr, buf->v_revstr); 849 } 850 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 851 sizeof(VESA_VIA_CLE266)) == 0; 852 853 if (buf->v_modetable == 0) 854 goto fail; 855 856 msize = (size_t)buf->v_memsize * 64 * 1024; 857 858 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 859 860 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 861 (vesa_vmodetab[i] != 0xffff); ++i) { 862 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 863 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 864 continue; 865 866 vmode.v_modeattr = le16toh(vmode.v_modeattr); 867 vmode.v_wgran = le16toh(vmode.v_wgran); 868 vmode.v_wsize = le16toh(vmode.v_wsize); 869 vmode.v_waseg = le16toh(vmode.v_waseg); 870 vmode.v_wbseg = le16toh(vmode.v_wbseg); 871 vmode.v_posfunc = le32toh(vmode.v_posfunc); 872 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 873 vmode.v_width = le16toh(vmode.v_width); 874 vmode.v_height = le16toh(vmode.v_height); 875 vmode.v_lfb = le32toh(vmode.v_lfb); 876 vmode.v_offscreen = le32toh(vmode.v_offscreen); 877 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 878 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 879 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 880 881 /* reject unsupported modes */ 882 #if 0 883 if ((vmode.v_modeattr & 884 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 885 (V_MODESUPP | V_MODEOPTINFO)) 886 continue; 887 #else 888 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 889 #if VESA_DEBUG > 1 890 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 891 " attr = %x\n", 892 vmode.v_modeattr & V_MODEGRAPHICS ? 893 "graphics" : "text", 894 vmode.v_width, vmode.v_height, vmode.v_bpp, 895 vmode.v_modeattr); 896 #endif 897 continue; 898 } 899 #endif 900 901 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 902 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 903 bsize *= vmode.v_planes; 904 905 /* Does it have enough memory to support this mode? */ 906 if (msize < bsize) { 907 #if VESA_DEBUG > 1 908 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 909 " attr = %x, not enough memory\n", 910 vmode.v_modeattr & V_MODEGRAPHICS ? 911 "graphics" : "text", 912 vmode.v_width, vmode.v_height, vmode.v_bpp, 913 vmode.v_modeattr); 914 #endif 915 continue; 916 } 917 918 /* expand the array if necessary */ 919 if (modes >= vesa_vmode_max) { 920 vesa_vmode_max += MODE_TABLE_DELTA; 921 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 922 M_DEVBUF, M_WAITOK); 923 #if VESA_DEBUG > 1 924 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 925 modes, vesa_vmode_max); 926 #endif 927 if (modes > 0) { 928 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 929 free(vesa_vmode, M_DEVBUF); 930 } 931 vesa_vmode = p; 932 } 933 934 #if VESA_DEBUG > 1 935 printf("Found VESA %s mode: %d x %d x %d bpp\n", 936 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 937 vmode.v_width, vmode.v_height, vmode.v_bpp); 938 #endif 939 if (is_via_cle266) { 940 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 941 vmode.v_width &= 0xff; 942 vmode.v_waseg = 0xb8000 >> 4; 943 } 944 } 945 946 /* copy some fields */ 947 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 948 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 949 vesa_vmode[modes].vi_width = vmode.v_width; 950 vesa_vmode[modes].vi_height = vmode.v_height; 951 vesa_vmode[modes].vi_depth = vmode.v_bpp; 952 vesa_vmode[modes].vi_planes = vmode.v_planes; 953 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 954 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 955 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 956 /* XXX window B */ 957 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 958 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 959 if (vmode.v_modeattr & V_MODELFB) 960 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 961 vesa_vmode[modes].vi_buffer_size = bsize; 962 vesa_vmode[modes].vi_mem_model = 963 vesa_translate_mmodel(vmode.v_memmodel); 964 switch (vesa_vmode[modes].vi_mem_model) { 965 case V_INFO_MM_DIRECT: 966 if ((vmode.v_modeattr & V_MODELFB) != 0 && 967 vers >= 0x0300) { 968 vesa_vmode[modes].vi_pixel_fields[0] = 969 vmode.v_linredfieldpos; 970 vesa_vmode[modes].vi_pixel_fields[1] = 971 vmode.v_lingreenfieldpos; 972 vesa_vmode[modes].vi_pixel_fields[2] = 973 vmode.v_linbluefieldpos; 974 vesa_vmode[modes].vi_pixel_fields[3] = 975 vmode.v_linresfieldpos; 976 vesa_vmode[modes].vi_pixel_fsizes[0] = 977 vmode.v_linredmasksize; 978 vesa_vmode[modes].vi_pixel_fsizes[1] = 979 vmode.v_lingreenmasksize; 980 vesa_vmode[modes].vi_pixel_fsizes[2] = 981 vmode.v_linbluemasksize; 982 vesa_vmode[modes].vi_pixel_fsizes[3] = 983 vmode.v_linresmasksize; 984 } else { 985 vesa_vmode[modes].vi_pixel_fields[0] = 986 vmode.v_redfieldpos; 987 vesa_vmode[modes].vi_pixel_fields[1] = 988 vmode.v_greenfieldpos; 989 vesa_vmode[modes].vi_pixel_fields[2] = 990 vmode.v_bluefieldpos; 991 vesa_vmode[modes].vi_pixel_fields[3] = 992 vmode.v_resfieldpos; 993 vesa_vmode[modes].vi_pixel_fsizes[0] = 994 vmode.v_redmasksize; 995 vesa_vmode[modes].vi_pixel_fsizes[1] = 996 vmode.v_greenmasksize; 997 vesa_vmode[modes].vi_pixel_fsizes[2] = 998 vmode.v_bluemasksize; 999 vesa_vmode[modes].vi_pixel_fsizes[3] = 1000 vmode.v_resmasksize; 1001 } 1002 /* FALLTHROUGH */ 1003 case V_INFO_MM_PACKED: 1004 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1005 break; 1006 } 1007 vesa_vmode[modes].vi_flags = 1008 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1009 1010 ++modes; 1011 } 1012 vesa_vmode[modes].vi_mode = EOT; 1013 1014 if (bootverbose) 1015 printf("VESA: %d mode(s) found\n", modes); 1016 1017 has_vesa_bios = (modes > 0); 1018 if (!has_vesa_bios) 1019 goto fail; 1020 1021 x86bios_free(vmbuf, sizeof(*buf)); 1022 return (0); 1023 1024 fail: 1025 if (vmbuf != NULL) 1026 x86bios_free(vmbuf, sizeof(buf)); 1027 if (vesa_adp_info != NULL) { 1028 free(vesa_adp_info, M_DEVBUF); 1029 vesa_adp_info = NULL; 1030 } 1031 if (vesa_oemstr != NULL) { 1032 free(vesa_oemstr, M_DEVBUF); 1033 vesa_oemstr = NULL; 1034 } 1035 if (vesa_venderstr != NULL) { 1036 free(vesa_venderstr, M_DEVBUF); 1037 vesa_venderstr = NULL; 1038 } 1039 if (vesa_prodstr != NULL) { 1040 free(vesa_prodstr, M_DEVBUF); 1041 vesa_prodstr = NULL; 1042 } 1043 if (vesa_revstr != NULL) { 1044 free(vesa_revstr, M_DEVBUF); 1045 vesa_revstr = NULL; 1046 } 1047 return (1); 1048 } 1049 1050 static void 1051 vesa_clear_modes(video_info_t *info, int color) 1052 { 1053 while (info->vi_mode != EOT) { 1054 if ((info->vi_flags & V_INFO_COLOR) != color) 1055 info->vi_mode = NA; 1056 ++info; 1057 } 1058 } 1059 1060 /* entry points */ 1061 1062 static int 1063 vesa_configure(int flags) 1064 { 1065 video_adapter_t *adp; 1066 int adapters; 1067 int error; 1068 int i; 1069 1070 if (vesa_init_done) 1071 return (0); 1072 if (flags & VIO_PROBE_ONLY) 1073 return (0); 1074 1075 /* 1076 * If the VESA module has already been loaded, abort loading 1077 * the module this time. 1078 */ 1079 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1080 if (adp->va_flags & V_ADP_VESA) 1081 return (ENXIO); 1082 if (adp->va_type == KD_VGA) 1083 break; 1084 } 1085 1086 /* 1087 * The VGA adapter is not found. This is because either 1088 * 1) the VGA driver has not been initialized, or 2) the VGA card 1089 * is not present. If 1) is the case, we shall defer 1090 * initialization for now and try again later. 1091 */ 1092 if (adp == NULL) { 1093 vga_sub_configure = vesa_configure; 1094 return (ENODEV); 1095 } 1096 1097 /* count number of registered adapters */ 1098 for (++i; vid_get_adapter(i) != NULL; ++i) 1099 ; 1100 adapters = i; 1101 1102 /* call VESA BIOS */ 1103 vesa_adp = adp; 1104 if (vesa_bios_init()) { 1105 vesa_adp = NULL; 1106 return (ENXIO); 1107 } 1108 vesa_adp->va_flags |= V_ADP_VESA; 1109 1110 /* remove conflicting modes if we have more than one adapter */ 1111 if (adapters > 1) { 1112 vesa_clear_modes(vesa_vmode, 1113 (vesa_adp->va_flags & V_ADP_COLOR) ? 1114 V_INFO_COLOR : 0); 1115 } 1116 1117 if ((error = vesa_load_ioctl()) == 0) { 1118 prevvidsw = vidsw[vesa_adp->va_index]; 1119 vidsw[vesa_adp->va_index] = &vesavidsw; 1120 vesa_init_done = TRUE; 1121 } else { 1122 vesa_adp = NULL; 1123 return (error); 1124 } 1125 1126 return (0); 1127 } 1128 1129 #if 0 1130 static int 1131 vesa_nop(void) 1132 { 1133 1134 return (0); 1135 } 1136 #endif 1137 1138 static int 1139 vesa_error(void) 1140 { 1141 1142 return (1); 1143 } 1144 1145 static int 1146 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1147 { 1148 1149 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1150 } 1151 1152 static int 1153 vesa_init(int unit, video_adapter_t *adp, int flags) 1154 { 1155 1156 return ((*prevvidsw->init)(unit, adp, flags)); 1157 } 1158 1159 static int 1160 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1161 { 1162 int i; 1163 1164 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1165 return (0); 1166 1167 if (adp != vesa_adp) 1168 return (1); 1169 1170 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1171 vesa_adp->va_flags & V_ADP_COLOR, mode); 1172 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1173 if (vesa_vmode[i].vi_mode == NA) 1174 continue; 1175 if (vesa_vmode[i].vi_mode == mode) { 1176 *info = vesa_vmode[i]; 1177 return (0); 1178 } 1179 } 1180 return (1); 1181 } 1182 1183 static int 1184 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1185 { 1186 int i; 1187 1188 if ((*prevvidsw->query_mode)(adp, info) == 0) 1189 return (0); 1190 if (adp != vesa_adp) 1191 return (ENODEV); 1192 1193 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1194 if ((info->vi_width != 0) 1195 && (info->vi_width != vesa_vmode[i].vi_width)) 1196 continue; 1197 if ((info->vi_height != 0) 1198 && (info->vi_height != vesa_vmode[i].vi_height)) 1199 continue; 1200 if ((info->vi_cwidth != 0) 1201 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1202 continue; 1203 if ((info->vi_cheight != 0) 1204 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1205 continue; 1206 if ((info->vi_depth != 0) 1207 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1208 continue; 1209 if ((info->vi_planes != 0) 1210 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1211 continue; 1212 /* pixel format, memory model */ 1213 if ((info->vi_flags != 0) 1214 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1215 continue; 1216 *info = vesa_vmode[i]; 1217 return (0); 1218 } 1219 return (ENODEV); 1220 } 1221 1222 static int 1223 vesa_set_mode(video_adapter_t *adp, int mode) 1224 { 1225 video_info_t info; 1226 1227 if (adp != vesa_adp) 1228 return ((*prevvidsw->set_mode)(adp, mode)); 1229 1230 mode = vesa_map_gen_mode_num(adp->va_type, 1231 adp->va_flags & V_ADP_COLOR, mode); 1232 #if VESA_DEBUG > 0 1233 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1234 adp->va_mode, adp->va_mode, mode, mode); 1235 #endif 1236 /* 1237 * If the current mode is a VESA mode and the new mode is not, 1238 * restore the state of the adapter first by setting one of the 1239 * standard VGA mode, so that non-standard, extended SVGA registers 1240 * are set to the state compatible with the standard VGA modes. 1241 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1242 * the new mode correctly. 1243 */ 1244 if (VESA_MODE(adp->va_mode)) { 1245 if (!VESA_MODE(mode) && 1246 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1247 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1248 vesa_bios_set_dac(6); 1249 adp->va_flags &= ~V_ADP_DAC8; 1250 } 1251 int10_set_mode(adp->va_initial_bios_mode); 1252 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1253 pmap_unmapdev(adp->va_buffer, 1254 vesa_adp_info->v_memsize * 64 * 1024); 1255 /* 1256 * Once (*prevvidsw->get_info)() succeeded, 1257 * (*prevvidsw->set_mode)() below won't fail... 1258 */ 1259 } 1260 } 1261 1262 /* we may not need to handle this mode after all... */ 1263 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1264 return (0); 1265 1266 /* is the new mode supported? */ 1267 if (vesa_get_info(adp, mode, &info)) 1268 return (1); 1269 /* assert(VESA_MODE(mode)); */ 1270 1271 #if VESA_DEBUG > 0 1272 printf("VESA: about to set a VESA mode...\n"); 1273 #endif 1274 /* don't use the linear frame buffer for text modes. XXX */ 1275 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1276 info.vi_flags &= ~V_INFO_LINEAR; 1277 1278 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1279 return (1); 1280 1281 /* Palette format is reset by the above VBE function call. */ 1282 adp->va_flags &= ~V_ADP_DAC8; 1283 1284 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1285 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1286 vesa_bios_set_dac(8) > 6) 1287 adp->va_flags |= V_ADP_DAC8; 1288 1289 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1290 pmap_unmapdev(adp->va_buffer, 1291 vesa_adp_info->v_memsize * 64 * 1024); 1292 1293 #if VESA_DEBUG > 0 1294 printf("VESA: mode set!\n"); 1295 #endif 1296 vesa_adp->va_mode = mode; 1297 vesa_adp->va_flags &= ~V_ADP_COLOR; 1298 vesa_adp->va_flags |= 1299 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1300 vesa_adp->va_crtc_addr = 1301 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1302 1303 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1304 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1305 vesa_adp->va_line_width /= info.vi_planes; 1306 1307 #ifdef MODE_TABLE_BROKEN 1308 /* If VBE function returns bigger bytes per scan line, use it. */ 1309 { 1310 int bpsl = vesa_bios_get_line_length(); 1311 if (bpsl > vesa_adp->va_line_width) { 1312 vesa_adp->va_line_width = bpsl; 1313 info.vi_buffer_size = bpsl * info.vi_height; 1314 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1315 info.vi_buffer_size *= info.vi_planes; 1316 } 1317 } 1318 #endif 1319 1320 if (info.vi_flags & V_INFO_LINEAR) { 1321 #if VESA_DEBUG > 1 1322 printf("VESA: setting up LFB\n"); 1323 #endif 1324 vesa_adp->va_buffer = 1325 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1326 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING); 1327 vesa_adp->va_window = vesa_adp->va_buffer; 1328 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1329 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1330 } else { 1331 vesa_adp->va_buffer = 0; 1332 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1333 vesa_adp->va_window_size = info.vi_window_size; 1334 vesa_adp->va_window_gran = info.vi_window_gran; 1335 } 1336 vesa_adp->va_buffer_size = info.vi_buffer_size; 1337 vesa_adp->va_window_orig = 0; 1338 vesa_adp->va_disp_start.x = 0; 1339 vesa_adp->va_disp_start.y = 0; 1340 #if VESA_DEBUG > 0 1341 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1342 info.vi_width, vesa_adp->va_line_width); 1343 #endif 1344 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1345 1346 /* move hardware cursor out of the way */ 1347 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1348 1349 return (0); 1350 } 1351 1352 static int 1353 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1354 u_char *data, int ch, int count) 1355 { 1356 1357 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1358 ch, count)); 1359 } 1360 1361 static int 1362 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1363 u_char *data, int ch, int count) 1364 { 1365 1366 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1367 ch, count)); 1368 } 1369 1370 static int 1371 vesa_show_font(video_adapter_t *adp, int page) 1372 { 1373 1374 return ((*prevvidsw->show_font)(adp, page)); 1375 } 1376 1377 static int 1378 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1379 { 1380 int bits; 1381 1382 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1383 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1384 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1385 return (0); 1386 } 1387 1388 return ((*prevvidsw->save_palette)(adp, palette)); 1389 } 1390 1391 static int 1392 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1393 { 1394 int bits; 1395 1396 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1397 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1398 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1399 return (0); 1400 } 1401 1402 return ((*prevvidsw->load_palette)(adp, palette)); 1403 } 1404 1405 static int 1406 vesa_set_border(video_adapter_t *adp, int color) 1407 { 1408 1409 return ((*prevvidsw->set_border)(adp, color)); 1410 } 1411 1412 static int 1413 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1414 { 1415 1416 if (adp != vesa_adp) 1417 return ((*prevvidsw->save_state)(adp, p, size)); 1418 1419 if (vesa_state_buf_size == -1) { 1420 vesa_state_buf_size = vesa_bios_state_buf_size(); 1421 if (vesa_state_buf_size == 0) 1422 return (1); 1423 } 1424 if (size == 0) 1425 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1426 else if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1427 return (1); 1428 1429 ((adp_state_t *)p)->sig = V_STATE_SIG; 1430 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1431 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1432 vesa_state_buf_size)); 1433 } 1434 1435 static int 1436 vesa_load_state(video_adapter_t *adp, void *p) 1437 { 1438 1439 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1440 return ((*prevvidsw->load_state)(adp, p)); 1441 1442 if (vesa_state_buf_size <= 0) 1443 return (1); 1444 1445 /* Try BIOS POST to restore a sane state. */ 1446 (void)vesa_bios_post(); 1447 (void)int10_set_mode(adp->va_initial_bios_mode); 1448 (void)vesa_set_mode(adp, adp->va_mode); 1449 1450 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1451 vesa_state_buf_size)); 1452 } 1453 1454 #if 0 1455 static int 1456 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1457 { 1458 x86regs_t regs; 1459 1460 x86bios_init_regs(®s); 1461 regs.R_AX = 0x4f05; 1462 regs.R_BL = 0x10; 1463 1464 x86bios_intr(®s, 0x10); 1465 1466 if (regs.R_AX != 0x004f) 1467 return (1); 1468 *offset = regs.DX * adp->va_window_gran; 1469 1470 return (0); 1471 } 1472 #endif 1473 1474 static int 1475 vesa_set_origin(video_adapter_t *adp, off_t offset) 1476 { 1477 x86regs_t regs; 1478 1479 /* 1480 * This function should return as quickly as possible to 1481 * maintain good performance of the system. For this reason, 1482 * error checking is kept minimal and let the VESA BIOS to 1483 * detect error. 1484 */ 1485 if (adp != vesa_adp) 1486 return ((*prevvidsw->set_win_org)(adp, offset)); 1487 1488 /* if this is a linear frame buffer, do nothing */ 1489 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1490 return (0); 1491 /* XXX */ 1492 if (adp->va_window_gran == 0) 1493 return (1); 1494 1495 x86bios_init_regs(®s); 1496 regs.R_AX = 0x4f05; 1497 regs.R_DX = offset / adp->va_window_gran; 1498 1499 x86bios_intr(®s, 0x10); 1500 1501 if (regs.R_AX != 0x004f) 1502 return (1); 1503 1504 x86bios_init_regs(®s); 1505 regs.R_AX = 0x4f05; 1506 regs.R_BL = 1; 1507 regs.R_DX = offset / adp->va_window_gran; 1508 x86bios_intr(®s, 0x10); 1509 1510 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1511 return (0); /* XXX */ 1512 } 1513 1514 static int 1515 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1516 { 1517 1518 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1519 } 1520 1521 static int 1522 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1523 { 1524 1525 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1526 } 1527 1528 static int 1529 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1530 int celsize, int blink) 1531 { 1532 1533 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1534 blink)); 1535 } 1536 1537 static int 1538 vesa_blank_display(video_adapter_t *adp, int mode) 1539 { 1540 1541 /* XXX: use VESA DPMS */ 1542 return ((*prevvidsw->blank_display)(adp, mode)); 1543 } 1544 1545 static int 1546 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1547 int prot) 1548 { 1549 1550 #if VESA_DEBUG > 0 1551 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%tx\n", 1552 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1553 #endif 1554 1555 if ((adp == vesa_adp) && 1556 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1557 /* va_window_size == va_buffer_size/vi_planes */ 1558 /* XXX: is this correct? */ 1559 if (offset > adp->va_window_size - PAGE_SIZE) 1560 return (-1); 1561 *paddr = adp->va_info.vi_buffer + offset; 1562 return (0); 1563 } 1564 return ((*prevvidsw->mmap)(adp, offset, paddr, prot)); 1565 } 1566 1567 static int 1568 vesa_clear(video_adapter_t *adp) 1569 { 1570 1571 return ((*prevvidsw->clear)(adp)); 1572 } 1573 1574 static int 1575 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1576 { 1577 1578 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1579 } 1580 1581 static int 1582 vesa_bitblt(video_adapter_t *adp,...) 1583 { 1584 1585 /* FIXME */ 1586 return (1); 1587 } 1588 1589 static int 1590 get_palette(video_adapter_t *adp, int base, int count, 1591 u_char *red, u_char *green, u_char *blue, u_char *trans) 1592 { 1593 u_char *r; 1594 u_char *g; 1595 u_char *b; 1596 int bits; 1597 int error; 1598 1599 if (base < 0 || base >= 256 || count < 0 || count > 256) 1600 return (1); 1601 if ((base + count) > 256) 1602 return (1); 1603 if (!VESA_MODE(adp->va_mode)) 1604 return (1); 1605 1606 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1607 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1608 g = r + count; 1609 b = g + count; 1610 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1611 if (error == 0) { 1612 copyout(r, red, count); 1613 copyout(g, green, count); 1614 copyout(b, blue, count); 1615 if (trans != NULL) { 1616 bzero(r, count); 1617 copyout(r, trans, count); 1618 } 1619 } 1620 free(r, M_DEVBUF); 1621 1622 return (error); 1623 } 1624 1625 static int 1626 set_palette(video_adapter_t *adp, int base, int count, 1627 u_char *red, u_char *green, u_char *blue, u_char *trans) 1628 { 1629 u_char *r; 1630 u_char *g; 1631 u_char *b; 1632 int bits; 1633 int error; 1634 1635 if (base < 0 || base >= 256 || count < 0 || count > 256) 1636 return (1); 1637 if ((base + count) > 256) 1638 return (1); 1639 if (!VESA_MODE(adp->va_mode)) 1640 return (1); 1641 1642 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1643 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1644 g = r + count; 1645 b = g + count; 1646 copyin(red, r, count); 1647 copyin(green, g, count); 1648 copyin(blue, b, count); 1649 1650 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1651 free(r, M_DEVBUF); 1652 1653 return (error); 1654 } 1655 1656 static int 1657 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1658 { 1659 int bytes; 1660 1661 if (adp != vesa_adp) 1662 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1663 1664 switch (cmd) { 1665 case FBIO_SETWINORG: /* set frame buffer window origin */ 1666 if (!VESA_MODE(adp->va_mode)) 1667 return (*prevvidsw->ioctl)(adp, cmd, arg); 1668 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1669 1670 case FBIO_SETDISPSTART: /* set display start address */ 1671 if (!VESA_MODE(adp->va_mode)) 1672 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1673 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1674 ((video_display_start_t *)arg)->y)) 1675 return (ENODEV); 1676 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1677 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1678 return (0); 1679 1680 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1681 if (!VESA_MODE(adp->va_mode)) 1682 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1683 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1684 return (ENODEV); 1685 adp->va_line_width = bytes; 1686 #if VESA_DEBUG > 1 1687 printf("new line width:%d\n", adp->va_line_width); 1688 #endif 1689 return (0); 1690 1691 case FBIO_GETPALETTE: /* get color palette */ 1692 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1693 ((video_color_palette_t *)arg)->count, 1694 ((video_color_palette_t *)arg)->red, 1695 ((video_color_palette_t *)arg)->green, 1696 ((video_color_palette_t *)arg)->blue, 1697 ((video_color_palette_t *)arg)->transparent)) 1698 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1699 return (0); 1700 1701 1702 case FBIO_SETPALETTE: /* set color palette */ 1703 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1704 ((video_color_palette_t *)arg)->count, 1705 ((video_color_palette_t *)arg)->red, 1706 ((video_color_palette_t *)arg)->green, 1707 ((video_color_palette_t *)arg)->blue, 1708 ((video_color_palette_t *)arg)->transparent)) 1709 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1710 return (0); 1711 1712 case FBIOGETCMAP: /* get color palette */ 1713 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1714 ((struct fbcmap *)arg)->count, 1715 ((struct fbcmap *)arg)->red, 1716 ((struct fbcmap *)arg)->green, 1717 ((struct fbcmap *)arg)->blue, NULL)) 1718 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1719 return (0); 1720 1721 case FBIOPUTCMAP: /* set color palette */ 1722 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1723 ((struct fbcmap *)arg)->count, 1724 ((struct fbcmap *)arg)->red, 1725 ((struct fbcmap *)arg)->green, 1726 ((struct fbcmap *)arg)->blue, NULL)) 1727 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1728 return (0); 1729 1730 default: 1731 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1732 } 1733 } 1734 1735 static int 1736 vesa_diag(video_adapter_t *adp, int level) 1737 { 1738 int error; 1739 1740 /* call the previous handler first */ 1741 error = (*prevvidsw->diag)(adp, level); 1742 if (error) 1743 return (error); 1744 1745 if (adp != vesa_adp) 1746 return (1); 1747 1748 if (level <= 0) 1749 return (0); 1750 1751 return (0); 1752 } 1753 1754 static int 1755 vesa_bios_info(int level) 1756 { 1757 #if VESA_DEBUG > 1 1758 struct vesa_mode vmode; 1759 int i; 1760 #endif 1761 uint16_t vers; 1762 1763 vers = vesa_adp_info->v_version; 1764 1765 if (bootverbose) { 1766 /* general adapter information */ 1767 printf( 1768 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1769 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1770 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1771 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1772 vesa_vmodetab, vesa_adp_info->v_modetable); 1773 1774 /* OEM string */ 1775 if (vesa_oemstr != NULL) 1776 printf("VESA: %s\n", vesa_oemstr); 1777 } 1778 1779 if (level <= 0) 1780 return (0); 1781 1782 if (vers >= 0x0200 && bootverbose) { 1783 /* vender name, product name, product revision */ 1784 printf("VESA: %s %s %s\n", 1785 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1786 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1787 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1788 } 1789 1790 #if VESA_DEBUG > 1 1791 /* mode information */ 1792 for (i = 0; 1793 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1794 && (vesa_vmodetab[i] != 0xffff); ++i) { 1795 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1796 continue; 1797 1798 /* print something for diagnostic purpose */ 1799 printf("VESA: mode:0x%03x, flags:0x%04x", 1800 vesa_vmodetab[i], vmode.v_modeattr); 1801 if (vmode.v_modeattr & V_MODEOPTINFO) { 1802 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1803 printf(", G %dx%dx%d %d, ", 1804 vmode.v_width, vmode.v_height, 1805 vmode.v_bpp, vmode.v_planes); 1806 } else { 1807 printf(", T %dx%d, ", 1808 vmode.v_width, vmode.v_height); 1809 } 1810 printf("font:%dx%d, ", 1811 vmode.v_cwidth, vmode.v_cheight); 1812 printf("pages:%d, mem:%d", 1813 vmode.v_ipages + 1, vmode.v_memmodel); 1814 } 1815 if (vmode.v_modeattr & V_MODELFB) { 1816 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1817 vmode.v_lfb, vmode.v_offscreen, 1818 vmode.v_offscreensize*1024); 1819 } 1820 printf("\n"); 1821 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1822 vmode.v_waseg, vmode.v_waattr, 1823 vmode.v_wbseg, vmode.v_wbattr); 1824 printf("size:%dk, gran:%dk\n", 1825 vmode.v_wsize, vmode.v_wgran); 1826 } 1827 #endif /* VESA_DEBUG > 1 */ 1828 1829 return (0); 1830 } 1831 1832 /* module loading */ 1833 1834 static int 1835 vesa_load(void) 1836 { 1837 int error; 1838 int s; 1839 1840 if (vesa_init_done) 1841 return (0); 1842 1843 /* locate a VGA adapter */ 1844 s = spltty(); 1845 vesa_adp = NULL; 1846 error = vesa_configure(0); 1847 splx(s); 1848 1849 if (error == 0) 1850 vesa_bios_info(bootverbose); 1851 1852 return (error); 1853 } 1854 1855 static int 1856 vesa_unload(void) 1857 { 1858 u_char palette[256*3]; 1859 int error; 1860 int s; 1861 1862 /* if the adapter is currently in a VESA mode, don't unload */ 1863 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1864 return (EBUSY); 1865 /* 1866 * FIXME: if there is at least one vty which is in a VESA mode, 1867 * we shouldn't be unloading! XXX 1868 */ 1869 1870 s = spltty(); 1871 if ((error = vesa_unload_ioctl()) == 0) { 1872 if (vesa_adp != NULL) { 1873 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1874 vesa_bios_save_palette(0, 256, palette, 8); 1875 vesa_bios_set_dac(6); 1876 vesa_adp->va_flags &= ~V_ADP_DAC8; 1877 vesa_bios_load_palette(0, 256, palette, 6); 1878 } 1879 vesa_adp->va_flags &= ~V_ADP_VESA; 1880 vidsw[vesa_adp->va_index] = prevvidsw; 1881 } 1882 } 1883 splx(s); 1884 1885 if (vesa_adp_info != NULL) 1886 free(vesa_adp_info, M_DEVBUF); 1887 if (vesa_oemstr != NULL) 1888 free(vesa_oemstr, M_DEVBUF); 1889 if (vesa_venderstr != NULL) 1890 free(vesa_venderstr, M_DEVBUF); 1891 if (vesa_prodstr != NULL) 1892 free(vesa_prodstr, M_DEVBUF); 1893 if (vesa_revstr != NULL) 1894 free(vesa_revstr, M_DEVBUF); 1895 if (vesa_vmode != &vesa_vmode_empty) 1896 free(vesa_vmode, M_DEVBUF); 1897 return (error); 1898 } 1899 1900 static int 1901 vesa_mod_event(module_t mod, int type, void *data) 1902 { 1903 1904 switch (type) { 1905 case MOD_LOAD: 1906 return (vesa_load()); 1907 case MOD_UNLOAD: 1908 return (vesa_unload()); 1909 } 1910 return (EOPNOTSUPP); 1911 } 1912 1913 static moduledata_t vesa_mod = { 1914 "vesa", 1915 vesa_mod_event, 1916 NULL, 1917 }; 1918 1919 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1920 MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1921 1922 #endif /* VGA_NO_MODE_CHANGE */
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