Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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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("$FreeBSD$"); 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 static size_t vesa_vmem_max; 77 78 /* VESA video adapter */ 79 static video_adapter_t *vesa_adp = NULL; 80 static ssize_t vesa_state_buf_size = -1; 81 82 /* VESA functions */ 83 #if 0 84 static int vesa_nop(void); 85 #endif 86 static int vesa_error(void); 87 static vi_probe_t vesa_probe; 88 static vi_init_t vesa_init; 89 static vi_get_info_t vesa_get_info; 90 static vi_query_mode_t vesa_query_mode; 91 static vi_set_mode_t vesa_set_mode; 92 static vi_save_font_t vesa_save_font; 93 static vi_load_font_t vesa_load_font; 94 static vi_show_font_t vesa_show_font; 95 static vi_save_palette_t vesa_save_palette; 96 static vi_load_palette_t vesa_load_palette; 97 static vi_set_border_t vesa_set_border; 98 static vi_save_state_t vesa_save_state; 99 static vi_load_state_t vesa_load_state; 100 static vi_set_win_org_t vesa_set_origin; 101 static vi_read_hw_cursor_t vesa_read_hw_cursor; 102 static vi_set_hw_cursor_t vesa_set_hw_cursor; 103 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 104 static vi_blank_display_t vesa_blank_display; 105 static vi_mmap_t vesa_mmap; 106 static vi_ioctl_t vesa_ioctl; 107 static vi_clear_t vesa_clear; 108 static vi_fill_rect_t vesa_fill_rect; 109 static vi_bitblt_t vesa_bitblt; 110 static vi_diag_t vesa_diag; 111 static int vesa_bios_info(int level); 112 113 static video_switch_t vesavidsw = { 114 vesa_probe, 115 vesa_init, 116 vesa_get_info, 117 vesa_query_mode, 118 vesa_set_mode, 119 vesa_save_font, 120 vesa_load_font, 121 vesa_show_font, 122 vesa_save_palette, 123 vesa_load_palette, 124 vesa_set_border, 125 vesa_save_state, 126 vesa_load_state, 127 vesa_set_origin, 128 vesa_read_hw_cursor, 129 vesa_set_hw_cursor, 130 vesa_set_hw_cursor_shape, 131 vesa_blank_display, 132 vesa_mmap, 133 vesa_ioctl, 134 vesa_clear, 135 vesa_fill_rect, 136 vesa_bitblt, 137 vesa_error, 138 vesa_error, 139 vesa_diag, 140 }; 141 142 static video_switch_t *prevvidsw; 143 144 /* VESA BIOS video modes */ 145 #define VESA_MAXMODES 64 146 #define EOT (-1) 147 #define NA (-2) 148 149 #define MODE_TABLE_DELTA 8 150 151 static int vesa_vmode_max = 0; 152 static video_info_t vesa_vmode_empty = { EOT }; 153 static video_info_t *vesa_vmode = &vesa_vmode_empty; 154 155 static int vesa_init_done = FALSE; 156 static int has_vesa_bios = FALSE; 157 static struct vesa_info *vesa_adp_info = NULL; 158 static u_int16_t *vesa_vmodetab = NULL; 159 static char *vesa_oemstr = NULL; 160 static char *vesa_venderstr = NULL; 161 static char *vesa_prodstr = NULL; 162 static char *vesa_revstr = NULL; 163 164 /* local macros and functions */ 165 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 166 167 static int int10_set_mode(int mode); 168 static int vesa_bios_post(void); 169 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 170 static int vesa_bios_set_mode(int mode); 171 #if 0 172 static int vesa_bios_get_dac(void); 173 #endif 174 static int vesa_bios_set_dac(int bits); 175 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 176 int bits); 177 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 178 u_char *b, int bits); 179 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 180 int bits); 181 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 182 u_char *b, int bits); 183 #define STATE_SIZE 0 184 #define STATE_SAVE 1 185 #define STATE_LOAD 2 186 #define STATE_HW (1<<0) 187 #define STATE_DATA (1<<1) 188 #define STATE_DAC (1<<2) 189 #define STATE_REG (1<<3) 190 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 191 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 192 static ssize_t vesa_bios_state_buf_size(void); 193 static int vesa_bios_save_restore(int code, void *p, size_t size); 194 #ifdef MODE_TABLE_BROKEN 195 static int vesa_bios_get_line_length(void); 196 #endif 197 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 198 #if 0 199 static int vesa_bios_get_start(int *x, int *y); 200 #endif 201 static int vesa_bios_set_start(int x, int y); 202 static int vesa_map_gen_mode_num(int type, int color, int mode); 203 static int vesa_translate_flags(u_int16_t vflags); 204 static int vesa_translate_mmodel(u_int8_t vmodel); 205 static int vesa_get_bpscanline(struct vesa_mode *vmode); 206 static int vesa_bios_init(void); 207 static void vesa_clear_modes(video_info_t *info, int color); 208 209 #if 0 210 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 211 #endif 212 213 /* INT 10 BIOS calls */ 214 static int 215 int10_set_mode(int mode) 216 { 217 x86regs_t regs; 218 219 x86bios_init_regs(®s); 220 regs.R_AL = mode; 221 222 x86bios_intr(®s, 0x10); 223 224 return (0); 225 } 226 227 static int 228 vesa_bios_post(void) 229 { 230 x86regs_t regs; 231 devclass_t dc; 232 device_t *devs; 233 device_t dev; 234 int count, i, is_pci; 235 236 if (x86bios_get_orm(0xc0000) == NULL) 237 return (1); 238 239 dev = NULL; 240 is_pci = 0; 241 242 /* Find the matching PCI video controller. */ 243 dc = devclass_find("vgapci"); 244 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 245 for (i = 0; i < count; i++) 246 if (device_get_flags(devs[i]) != 0 && 247 x86bios_match_device(0xc0000, devs[i])) { 248 dev = devs[i]; 249 is_pci = 1; 250 break; 251 } 252 free(devs, M_TEMP); 253 } 254 255 /* Try VGA if a PCI device is not found. */ 256 if (dev == NULL) { 257 dc = devclass_find(VGA_DRIVER_NAME); 258 if (dc != NULL) 259 dev = devclass_get_device(dc, 0); 260 } 261 262 if (bootverbose) 263 printf("%s: calling BIOS POST\n", 264 dev == NULL ? "VESA" : device_get_nameunit(dev)); 265 266 x86bios_init_regs(®s); 267 if (is_pci) { 268 regs.R_AH = pci_get_bus(dev); 269 regs.R_AL = (pci_get_slot(dev) << 3) | 270 (pci_get_function(dev) & 0x07); 271 } 272 regs.R_DL = 0x80; 273 x86bios_call(®s, 0xc000, 0x0003); 274 275 if (x86bios_get_intr(0x10) == 0) 276 return (1); 277 278 return (0); 279 } 280 281 /* VESA BIOS calls */ 282 static int 283 vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 284 { 285 x86regs_t regs; 286 uint32_t offs; 287 void *buf; 288 289 buf = x86bios_alloc(&offs, sizeof(*vmode)); 290 if (buf == NULL) 291 return (1); 292 293 x86bios_init_regs(®s); 294 regs.R_AX = 0x4f01; 295 regs.R_CX = mode; 296 297 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 298 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 299 300 x86bios_intr(®s, 0x10); 301 302 if (regs.R_AX != 0x004f) { 303 x86bios_free(buf, sizeof(*vmode)); 304 return (1); 305 } 306 307 bcopy(buf, vmode, sizeof(*vmode)); 308 x86bios_free(buf, sizeof(*vmode)); 309 310 return (0); 311 } 312 313 static int 314 vesa_bios_set_mode(int mode) 315 { 316 x86regs_t regs; 317 318 x86bios_init_regs(®s); 319 regs.R_AX = 0x4f02; 320 regs.R_BX = mode; 321 322 x86bios_intr(®s, 0x10); 323 324 return (regs.R_AX != 0x004f); 325 } 326 327 #if 0 328 static int 329 vesa_bios_get_dac(void) 330 { 331 x86regs_t regs; 332 333 x86bios_init_regs(®s); 334 regs.R_AX = 0x4f08; 335 regs.R_BL = 1; 336 337 x86bios_intr(®s, 0x10); 338 339 if (regs.R_AX != 0x004f) 340 return (6); 341 342 return (regs.R_BH); 343 } 344 #endif 345 346 static int 347 vesa_bios_set_dac(int bits) 348 { 349 x86regs_t regs; 350 351 x86bios_init_regs(®s); 352 regs.R_AX = 0x4f08; 353 /* regs.R_BL = 0; */ 354 regs.R_BH = bits; 355 356 x86bios_intr(®s, 0x10); 357 358 if (regs.R_AX != 0x004f) 359 return (6); 360 361 return (regs.R_BH); 362 } 363 364 static int 365 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 366 { 367 x86regs_t regs; 368 uint32_t offs; 369 u_char *p; 370 int i; 371 372 p = (u_char *)x86bios_alloc(&offs, colors * 4); 373 if (p == NULL) 374 return (1); 375 376 x86bios_init_regs(®s); 377 regs.R_AX = 0x4f09; 378 regs.R_BL = 1; 379 regs.R_CX = colors; 380 regs.R_DX = start; 381 382 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 383 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 384 385 x86bios_intr(®s, 0x10); 386 387 if (regs.R_AX != 0x004f) { 388 x86bios_free(p, colors * 4); 389 return (1); 390 } 391 392 bits = 8 - bits; 393 for (i = 0; i < colors; ++i) { 394 palette[i * 3] = p[i * 4 + 2] << bits; 395 palette[i * 3 + 1] = p[i * 4 + 1] << bits; 396 palette[i * 3 + 2] = p[i * 4] << bits; 397 } 398 x86bios_free(p, colors * 4); 399 400 return (0); 401 } 402 403 static int 404 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 405 int bits) 406 { 407 x86regs_t regs; 408 uint32_t offs; 409 u_char *p; 410 int i; 411 412 p = (u_char *)x86bios_alloc(&offs, colors * 4); 413 if (p == NULL) 414 return (1); 415 416 x86bios_init_regs(®s); 417 regs.R_AX = 0x4f09; 418 regs.R_BL = 1; 419 regs.R_CX = colors; 420 regs.R_DX = start; 421 422 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 423 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 424 425 x86bios_intr(®s, 0x10); 426 427 if (regs.R_AX != 0x004f) { 428 x86bios_free(p, colors * 4); 429 return (1); 430 } 431 432 bits = 8 - bits; 433 for (i = 0; i < colors; ++i) { 434 r[i] = p[i * 4 + 2] << bits; 435 g[i] = p[i * 4 + 1] << bits; 436 b[i] = p[i * 4] << bits; 437 } 438 x86bios_free(p, colors * 4); 439 440 return (0); 441 } 442 443 static int 444 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 445 { 446 x86regs_t regs; 447 uint32_t offs; 448 u_char *p; 449 int i; 450 451 p = (u_char *)x86bios_alloc(&offs, colors * 4); 452 if (p == NULL) 453 return (1); 454 455 x86bios_init_regs(®s); 456 regs.R_AX = 0x4f09; 457 /* regs.R_BL = 0; */ 458 regs.R_CX = colors; 459 regs.R_DX = start; 460 461 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 462 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 463 464 bits = 8 - bits; 465 for (i = 0; i < colors; ++i) { 466 p[i * 4] = palette[i * 3 + 2] >> bits; 467 p[i * 4 + 1] = palette[i * 3 + 1] >> bits; 468 p[i * 4 + 2] = palette[i * 3] >> bits; 469 p[i * 4 + 3] = 0; 470 } 471 x86bios_intr(®s, 0x10); 472 x86bios_free(p, colors * 4); 473 474 return (regs.R_AX != 0x004f); 475 } 476 477 static int 478 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 479 int bits) 480 { 481 x86regs_t regs; 482 uint32_t offs; 483 u_char *p; 484 int i; 485 486 p = (u_char *)x86bios_alloc(&offs, colors * 4); 487 if (p == NULL) 488 return (1); 489 490 x86bios_init_regs(®s); 491 regs.R_AX = 0x4f09; 492 /* regs.R_BL = 0; */ 493 regs.R_CX = colors; 494 regs.R_DX = start; 495 496 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 497 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 498 499 bits = 8 - bits; 500 for (i = 0; i < colors; ++i) { 501 p[i * 4] = b[i] >> bits; 502 p[i * 4 + 1] = g[i] >> bits; 503 p[i * 4 + 2] = r[i] >> bits; 504 p[i * 4 + 3] = 0; 505 } 506 x86bios_intr(®s, 0x10); 507 x86bios_free(p, colors * 4); 508 509 return (regs.R_AX != 0x004f); 510 } 511 512 static ssize_t 513 vesa_bios_state_buf_size(void) 514 { 515 x86regs_t regs; 516 517 x86bios_init_regs(®s); 518 regs.R_AX = 0x4f04; 519 /* regs.R_DL = STATE_SIZE; */ 520 regs.R_CX = STATE_ALL; 521 522 x86bios_intr(®s, 0x10); 523 524 if (regs.R_AX != 0x004f) 525 return (0); 526 527 return (regs.R_BX * 64); 528 } 529 530 static int 531 vesa_bios_save_restore(int code, void *p, size_t size) 532 { 533 x86regs_t regs; 534 uint32_t offs; 535 void *buf; 536 537 if (code != STATE_SAVE && code != STATE_LOAD) 538 return (1); 539 540 buf = x86bios_alloc(&offs, size); 541 if (buf == NULL) 542 return (1); 543 544 x86bios_init_regs(®s); 545 regs.R_AX = 0x4f04; 546 regs.R_DL = code; 547 regs.R_CX = STATE_ALL; 548 549 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 550 regs.R_BX = X86BIOS_PHYSTOOFF(offs); 551 552 switch (code) { 553 case STATE_SAVE: 554 x86bios_intr(®s, 0x10); 555 bcopy(buf, p, size); 556 break; 557 case STATE_LOAD: 558 bcopy(p, buf, size); 559 x86bios_intr(®s, 0x10); 560 break; 561 } 562 x86bios_free(buf, size); 563 564 return (regs.R_AX != 0x004f); 565 } 566 567 #ifdef MODE_TABLE_BROKEN 568 static int 569 vesa_bios_get_line_length(void) 570 { 571 x86regs_t regs; 572 573 x86bios_init_regs(®s); 574 regs.R_AX = 0x4f06; 575 regs.R_BL = 1; 576 577 x86bios_intr(®s, 0x10); 578 579 if (regs.R_AX != 0x004f) 580 return (-1); 581 582 return (regs.R_BX); 583 } 584 #endif 585 586 static int 587 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 588 { 589 x86regs_t regs; 590 591 x86bios_init_regs(®s); 592 regs.R_AX = 0x4f06; 593 /* regs.R_BL = 0; */ 594 regs.R_CX = pixel; 595 596 x86bios_intr(®s, 0x10); 597 598 #if VESA_DEBUG > 1 599 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 600 #endif 601 if (regs.R_AX != 0x004f) 602 return (-1); 603 604 if (bytes != NULL) 605 *bytes = regs.R_BX; 606 if (lines != NULL) 607 *lines = regs.R_DX; 608 609 return (0); 610 } 611 612 #if 0 613 static int 614 vesa_bios_get_start(int *x, int *y) 615 { 616 x86regs_t regs; 617 618 x86bios_init_regs(®s); 619 regs.R_AX = 0x4f07; 620 regs.R_BL = 1; 621 622 x86bios_intr(®s, 0x10); 623 624 if (regs.R_AX != 0x004f) 625 return (-1); 626 627 *x = regs.R_CX; 628 *y = regs.R_DX; 629 630 return (0); 631 } 632 #endif 633 634 static int 635 vesa_bios_set_start(int x, int y) 636 { 637 x86regs_t regs; 638 639 x86bios_init_regs(®s); 640 regs.R_AX = 0x4f07; 641 regs.R_BL = 0x80; 642 regs.R_CX = x; 643 regs.R_DX = y; 644 645 x86bios_intr(®s, 0x10); 646 647 return (regs.R_AX != 0x004f); 648 } 649 650 /* map a generic video mode to a known mode */ 651 static int 652 vesa_map_gen_mode_num(int type, int color, int mode) 653 { 654 static struct { 655 int from; 656 int to; 657 } mode_map[] = { 658 { M_TEXT_132x25, M_VESA_C132x25 }, 659 { M_TEXT_132x43, M_VESA_C132x43 }, 660 { M_TEXT_132x50, M_VESA_C132x50 }, 661 { M_TEXT_132x60, M_VESA_C132x60 }, 662 }; 663 int i; 664 665 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 666 if (mode_map[i].from == mode) 667 return (mode_map[i].to); 668 } 669 return (mode); 670 } 671 672 static int 673 vesa_translate_flags(u_int16_t vflags) 674 { 675 static struct { 676 u_int16_t mask; 677 int set; 678 int reset; 679 } ftable[] = { 680 { V_MODECOLOR, V_INFO_COLOR, 0 }, 681 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 682 { V_MODELFB, V_INFO_LINEAR, 0 }, 683 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 684 }; 685 int flags; 686 int i; 687 688 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 689 flags |= (vflags & ftable[i].mask) ? 690 ftable[i].set : ftable[i].reset; 691 } 692 return (flags); 693 } 694 695 static int 696 vesa_translate_mmodel(u_int8_t vmodel) 697 { 698 static struct { 699 u_int8_t vmodel; 700 int mmodel; 701 } mtable[] = { 702 { V_MMTEXT, V_INFO_MM_TEXT }, 703 { V_MMCGA, V_INFO_MM_CGA }, 704 { V_MMHGC, V_INFO_MM_HGC }, 705 { V_MMEGA, V_INFO_MM_PLANAR }, 706 { V_MMPACKED, V_INFO_MM_PACKED }, 707 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 708 }; 709 int i; 710 711 for (i = 0; mtable[i].mmodel >= 0; ++i) { 712 if (mtable[i].vmodel == vmodel) 713 return (mtable[i].mmodel); 714 } 715 return (V_INFO_MM_OTHER); 716 } 717 718 static int 719 vesa_get_bpscanline(struct vesa_mode *vmode) 720 { 721 int bpsl; 722 723 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 724 /* Find the minimum length. */ 725 switch (vmode->v_bpp / vmode->v_planes) { 726 case 1: 727 bpsl = vmode->v_width / 8; 728 break; 729 case 2: 730 bpsl = vmode->v_width / 4; 731 break; 732 case 4: 733 bpsl = vmode->v_width / 2; 734 break; 735 default: 736 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 737 bpsl /= vmode->v_planes; 738 break; 739 } 740 741 /* Use VBE 3.0 information if it looks sane. */ 742 if ((vmode->v_modeattr & V_MODELFB) != 0 && 743 vesa_adp_info->v_version >= 0x0300 && 744 vmode->v_linbpscanline > bpsl) 745 return (vmode->v_linbpscanline); 746 747 /* Return the minimum if the mode table looks absurd. */ 748 if (vmode->v_bpscanline < bpsl) 749 return (bpsl); 750 } 751 752 return (vmode->v_bpscanline); 753 } 754 755 #define VESA_MAXSTR 256 756 757 #define VESA_STRCPY(dst, src) do { \ 758 char *str; \ 759 int i; \ 760 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 761 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 762 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 763 dst[i] = str[i]; \ 764 dst[i] = '\0'; \ 765 } while (0) 766 767 static int 768 vesa_bios_init(void) 769 { 770 struct vesa_mode vmode; 771 struct vesa_info *buf; 772 video_info_t *p; 773 x86regs_t regs; 774 size_t bsize; 775 size_t msize; 776 void *vmbuf; 777 uint32_t offs; 778 uint16_t vers; 779 int is_via_cle266; 780 int modes; 781 int i; 782 783 if (vesa_init_done) 784 return (0); 785 786 has_vesa_bios = FALSE; 787 vesa_adp_info = NULL; 788 vesa_vmode_max = 0; 789 vesa_vmode[0].vi_mode = EOT; 790 791 /* 792 * If the VBE real mode interrupt vector is not found, try BIOS POST. 793 */ 794 if (x86bios_get_intr(0x10) == 0) { 795 if (vesa_bios_post() != 0) 796 return (1); 797 if (bootverbose) { 798 offs = x86bios_get_intr(0x10); 799 printf("VESA: interrupt vector installed (0x%x)\n", 800 BIOS_SADDRTOLADDR(offs)); 801 } 802 } 803 804 x86bios_init_regs(®s); 805 regs.R_AX = 0x4f00; 806 807 vmbuf = x86bios_alloc(&offs, sizeof(*buf)); 808 if (vmbuf == NULL) 809 return (1); 810 811 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 812 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 813 814 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 815 x86bios_intr(®s, 0x10); 816 817 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 818 goto fail; 819 820 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 821 bcopy(vmbuf, buf, sizeof(*buf)); 822 823 if (bootverbose) { 824 printf("VESA: information block\n"); 825 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 826 } 827 828 vers = buf->v_version = le16toh(buf->v_version); 829 buf->v_oemstr = le32toh(buf->v_oemstr); 830 buf->v_flags = le32toh(buf->v_flags); 831 buf->v_modetable = le32toh(buf->v_modetable); 832 buf->v_memsize = le16toh(buf->v_memsize); 833 buf->v_revision = le16toh(buf->v_revision); 834 buf->v_venderstr = le32toh(buf->v_venderstr); 835 buf->v_prodstr = le32toh(buf->v_prodstr); 836 buf->v_revstr = le32toh(buf->v_revstr); 837 838 if (vers < 0x0102) { 839 printf("VESA: VBE version %d.%d is not supported; " 840 "version 1.2 or later is required.\n", 841 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 842 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 843 goto fail; 844 } 845 846 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 847 if (vers >= 0x0200) { 848 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 849 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 850 VESA_STRCPY(vesa_revstr, buf->v_revstr); 851 } 852 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 853 sizeof(VESA_VIA_CLE266)) == 0; 854 855 if (buf->v_modetable == 0) 856 goto fail; 857 858 msize = (size_t)buf->v_memsize * 64 * 1024; 859 860 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 861 862 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 863 (vesa_vmodetab[i] != 0xffff); ++i) { 864 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 865 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 866 continue; 867 868 vmode.v_modeattr = le16toh(vmode.v_modeattr); 869 vmode.v_wgran = le16toh(vmode.v_wgran); 870 vmode.v_wsize = le16toh(vmode.v_wsize); 871 vmode.v_waseg = le16toh(vmode.v_waseg); 872 vmode.v_wbseg = le16toh(vmode.v_wbseg); 873 vmode.v_posfunc = le32toh(vmode.v_posfunc); 874 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 875 vmode.v_width = le16toh(vmode.v_width); 876 vmode.v_height = le16toh(vmode.v_height); 877 vmode.v_lfb = le32toh(vmode.v_lfb); 878 vmode.v_offscreen = le32toh(vmode.v_offscreen); 879 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 880 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 881 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 882 883 /* reject unsupported modes */ 884 #if 0 885 if ((vmode.v_modeattr & 886 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 887 (V_MODESUPP | V_MODEOPTINFO)) 888 continue; 889 #else 890 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 891 #if VESA_DEBUG > 1 892 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 893 " attr = %x\n", 894 vmode.v_modeattr & V_MODEGRAPHICS ? 895 "graphics" : "text", 896 vmode.v_width, vmode.v_height, vmode.v_bpp, 897 vmode.v_modeattr); 898 #endif 899 continue; 900 } 901 #endif 902 903 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 904 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 905 bsize *= vmode.v_planes; 906 907 /* Does it have enough memory to support this mode? */ 908 if (msize < bsize) { 909 #if VESA_DEBUG > 1 910 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 911 " attr = %x, not enough memory\n", 912 vmode.v_modeattr & V_MODEGRAPHICS ? 913 "graphics" : "text", 914 vmode.v_width, vmode.v_height, vmode.v_bpp, 915 vmode.v_modeattr); 916 #endif 917 continue; 918 } 919 if (bsize > vesa_vmem_max) 920 vesa_vmem_max = bsize; 921 922 /* expand the array if necessary */ 923 if (modes >= vesa_vmode_max) { 924 vesa_vmode_max += MODE_TABLE_DELTA; 925 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 926 M_DEVBUF, M_WAITOK); 927 #if VESA_DEBUG > 1 928 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 929 modes, vesa_vmode_max); 930 #endif 931 if (modes > 0) { 932 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 933 free(vesa_vmode, M_DEVBUF); 934 } 935 vesa_vmode = p; 936 } 937 938 #if VESA_DEBUG > 1 939 printf("Found VESA %s mode: %d x %d x %d bpp\n", 940 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 941 vmode.v_width, vmode.v_height, vmode.v_bpp); 942 #endif 943 if (is_via_cle266) { 944 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 945 vmode.v_width &= 0xff; 946 vmode.v_waseg = 0xb8000 >> 4; 947 } 948 } 949 950 /* copy some fields */ 951 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 952 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 953 vesa_vmode[modes].vi_width = vmode.v_width; 954 vesa_vmode[modes].vi_height = vmode.v_height; 955 vesa_vmode[modes].vi_depth = vmode.v_bpp; 956 vesa_vmode[modes].vi_planes = vmode.v_planes; 957 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 958 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 959 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 960 /* XXX window B */ 961 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 962 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 963 if (vmode.v_modeattr & V_MODELFB) 964 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 965 vesa_vmode[modes].vi_buffer_size = bsize; 966 vesa_vmode[modes].vi_mem_model = 967 vesa_translate_mmodel(vmode.v_memmodel); 968 switch (vesa_vmode[modes].vi_mem_model) { 969 case V_INFO_MM_DIRECT: 970 if ((vmode.v_modeattr & V_MODELFB) != 0 && 971 vers >= 0x0300) { 972 vesa_vmode[modes].vi_pixel_fields[0] = 973 vmode.v_linredfieldpos; 974 vesa_vmode[modes].vi_pixel_fields[1] = 975 vmode.v_lingreenfieldpos; 976 vesa_vmode[modes].vi_pixel_fields[2] = 977 vmode.v_linbluefieldpos; 978 vesa_vmode[modes].vi_pixel_fields[3] = 979 vmode.v_linresfieldpos; 980 vesa_vmode[modes].vi_pixel_fsizes[0] = 981 vmode.v_linredmasksize; 982 vesa_vmode[modes].vi_pixel_fsizes[1] = 983 vmode.v_lingreenmasksize; 984 vesa_vmode[modes].vi_pixel_fsizes[2] = 985 vmode.v_linbluemasksize; 986 vesa_vmode[modes].vi_pixel_fsizes[3] = 987 vmode.v_linresmasksize; 988 } else { 989 vesa_vmode[modes].vi_pixel_fields[0] = 990 vmode.v_redfieldpos; 991 vesa_vmode[modes].vi_pixel_fields[1] = 992 vmode.v_greenfieldpos; 993 vesa_vmode[modes].vi_pixel_fields[2] = 994 vmode.v_bluefieldpos; 995 vesa_vmode[modes].vi_pixel_fields[3] = 996 vmode.v_resfieldpos; 997 vesa_vmode[modes].vi_pixel_fsizes[0] = 998 vmode.v_redmasksize; 999 vesa_vmode[modes].vi_pixel_fsizes[1] = 1000 vmode.v_greenmasksize; 1001 vesa_vmode[modes].vi_pixel_fsizes[2] = 1002 vmode.v_bluemasksize; 1003 vesa_vmode[modes].vi_pixel_fsizes[3] = 1004 vmode.v_resmasksize; 1005 } 1006 /* FALLTHROUGH */ 1007 case V_INFO_MM_PACKED: 1008 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1009 break; 1010 } 1011 vesa_vmode[modes].vi_flags = 1012 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1013 1014 ++modes; 1015 } 1016 vesa_vmode[modes].vi_mode = EOT; 1017 1018 if (bootverbose) 1019 printf("VESA: %d mode(s) found\n", modes); 1020 1021 has_vesa_bios = (modes > 0); 1022 if (!has_vesa_bios) 1023 goto fail; 1024 1025 x86bios_free(vmbuf, sizeof(*buf)); 1026 return (0); 1027 1028 fail: 1029 if (vmbuf != NULL) 1030 x86bios_free(vmbuf, sizeof(buf)); 1031 if (vesa_adp_info != NULL) { 1032 free(vesa_adp_info, M_DEVBUF); 1033 vesa_adp_info = NULL; 1034 } 1035 if (vesa_oemstr != NULL) { 1036 free(vesa_oemstr, M_DEVBUF); 1037 vesa_oemstr = NULL; 1038 } 1039 if (vesa_venderstr != NULL) { 1040 free(vesa_venderstr, M_DEVBUF); 1041 vesa_venderstr = NULL; 1042 } 1043 if (vesa_prodstr != NULL) { 1044 free(vesa_prodstr, M_DEVBUF); 1045 vesa_prodstr = NULL; 1046 } 1047 if (vesa_revstr != NULL) { 1048 free(vesa_revstr, M_DEVBUF); 1049 vesa_revstr = NULL; 1050 } 1051 return (1); 1052 } 1053 1054 static void 1055 vesa_clear_modes(video_info_t *info, int color) 1056 { 1057 while (info->vi_mode != EOT) { 1058 if ((info->vi_flags & V_INFO_COLOR) != color) 1059 info->vi_mode = NA; 1060 ++info; 1061 } 1062 } 1063 1064 /* entry points */ 1065 1066 static int 1067 vesa_configure(int flags) 1068 { 1069 video_adapter_t *adp; 1070 int adapters; 1071 int error; 1072 int i; 1073 1074 if (vesa_init_done) 1075 return (0); 1076 if (flags & VIO_PROBE_ONLY) 1077 return (0); 1078 1079 /* 1080 * If the VESA module has already been loaded, abort loading 1081 * the module this time. 1082 */ 1083 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1084 if (adp->va_flags & V_ADP_VESA) 1085 return (ENXIO); 1086 if (adp->va_type == KD_VGA) 1087 break; 1088 } 1089 1090 /* 1091 * The VGA adapter is not found. This is because either 1092 * 1) the VGA driver has not been initialized, or 2) the VGA card 1093 * is not present. If 1) is the case, we shall defer 1094 * initialization for now and try again later. 1095 */ 1096 if (adp == NULL) { 1097 vga_sub_configure = vesa_configure; 1098 return (ENODEV); 1099 } 1100 1101 /* count number of registered adapters */ 1102 for (++i; vid_get_adapter(i) != NULL; ++i) 1103 ; 1104 adapters = i; 1105 1106 /* call VESA BIOS */ 1107 vesa_adp = adp; 1108 if (vesa_bios_init()) { 1109 vesa_adp = NULL; 1110 return (ENXIO); 1111 } 1112 vesa_adp->va_flags |= V_ADP_VESA; 1113 1114 /* remove conflicting modes if we have more than one adapter */ 1115 if (adapters > 1) { 1116 vesa_clear_modes(vesa_vmode, 1117 (vesa_adp->va_flags & V_ADP_COLOR) ? 1118 V_INFO_COLOR : 0); 1119 } 1120 1121 if ((error = vesa_load_ioctl()) == 0) { 1122 prevvidsw = vidsw[vesa_adp->va_index]; 1123 vidsw[vesa_adp->va_index] = &vesavidsw; 1124 vesa_init_done = TRUE; 1125 } else { 1126 vesa_adp = NULL; 1127 return (error); 1128 } 1129 1130 return (0); 1131 } 1132 1133 #if 0 1134 static int 1135 vesa_nop(void) 1136 { 1137 1138 return (0); 1139 } 1140 #endif 1141 1142 static int 1143 vesa_error(void) 1144 { 1145 1146 return (1); 1147 } 1148 1149 static int 1150 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1151 { 1152 1153 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1154 } 1155 1156 static int 1157 vesa_init(int unit, video_adapter_t *adp, int flags) 1158 { 1159 1160 return ((*prevvidsw->init)(unit, adp, flags)); 1161 } 1162 1163 static int 1164 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1165 { 1166 int i; 1167 1168 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1169 return (0); 1170 1171 if (adp != vesa_adp) 1172 return (1); 1173 1174 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1175 vesa_adp->va_flags & V_ADP_COLOR, mode); 1176 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1177 if (vesa_vmode[i].vi_mode == NA) 1178 continue; 1179 if (vesa_vmode[i].vi_mode == mode) { 1180 *info = vesa_vmode[i]; 1181 return (0); 1182 } 1183 } 1184 return (1); 1185 } 1186 1187 static int 1188 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1189 { 1190 int i; 1191 1192 if ((*prevvidsw->query_mode)(adp, info) == 0) 1193 return (0); 1194 if (adp != vesa_adp) 1195 return (ENODEV); 1196 1197 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1198 if ((info->vi_width != 0) 1199 && (info->vi_width != vesa_vmode[i].vi_width)) 1200 continue; 1201 if ((info->vi_height != 0) 1202 && (info->vi_height != vesa_vmode[i].vi_height)) 1203 continue; 1204 if ((info->vi_cwidth != 0) 1205 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1206 continue; 1207 if ((info->vi_cheight != 0) 1208 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1209 continue; 1210 if ((info->vi_depth != 0) 1211 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1212 continue; 1213 if ((info->vi_planes != 0) 1214 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1215 continue; 1216 /* pixel format, memory model */ 1217 if ((info->vi_flags != 0) 1218 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1219 continue; 1220 *info = vesa_vmode[i]; 1221 return (0); 1222 } 1223 return (ENODEV); 1224 } 1225 1226 static int 1227 vesa_set_mode(video_adapter_t *adp, int mode) 1228 { 1229 video_info_t info; 1230 1231 if (adp != vesa_adp) 1232 return ((*prevvidsw->set_mode)(adp, mode)); 1233 1234 mode = vesa_map_gen_mode_num(adp->va_type, 1235 adp->va_flags & V_ADP_COLOR, mode); 1236 #if VESA_DEBUG > 0 1237 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1238 adp->va_mode, adp->va_mode, mode, mode); 1239 #endif 1240 /* 1241 * If the current mode is a VESA mode and the new mode is not, 1242 * restore the state of the adapter first by setting one of the 1243 * standard VGA mode, so that non-standard, extended SVGA registers 1244 * are set to the state compatible with the standard VGA modes. 1245 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1246 * the new mode correctly. 1247 */ 1248 if (VESA_MODE(adp->va_mode)) { 1249 if (!VESA_MODE(mode) && 1250 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1251 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1252 vesa_bios_set_dac(6); 1253 adp->va_flags &= ~V_ADP_DAC8; 1254 } 1255 int10_set_mode(adp->va_initial_bios_mode); 1256 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1257 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1258 /* 1259 * Once (*prevvidsw->get_info)() succeeded, 1260 * (*prevvidsw->set_mode)() below won't fail... 1261 */ 1262 } 1263 } 1264 1265 /* we may not need to handle this mode after all... */ 1266 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1267 return (0); 1268 1269 /* is the new mode supported? */ 1270 if (vesa_get_info(adp, mode, &info)) 1271 return (1); 1272 /* assert(VESA_MODE(mode)); */ 1273 1274 #if VESA_DEBUG > 0 1275 printf("VESA: about to set a VESA mode...\n"); 1276 #endif 1277 /* don't use the linear frame buffer for text modes. XXX */ 1278 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1279 info.vi_flags &= ~V_INFO_LINEAR; 1280 1281 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1282 return (1); 1283 1284 /* Palette format is reset by the above VBE function call. */ 1285 adp->va_flags &= ~V_ADP_DAC8; 1286 1287 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1288 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1289 vesa_bios_set_dac(8) > 6) 1290 adp->va_flags |= V_ADP_DAC8; 1291 1292 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1293 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1294 1295 #if VESA_DEBUG > 0 1296 printf("VESA: mode set!\n"); 1297 #endif 1298 vesa_adp->va_mode = mode; 1299 vesa_adp->va_flags &= ~V_ADP_COLOR; 1300 vesa_adp->va_flags |= 1301 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1302 vesa_adp->va_crtc_addr = 1303 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1304 1305 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1306 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1307 vesa_adp->va_line_width /= info.vi_planes; 1308 1309 #ifdef MODE_TABLE_BROKEN 1310 /* If VBE function returns bigger bytes per scan line, use it. */ 1311 { 1312 int bpsl = vesa_bios_get_line_length(); 1313 if (bpsl > vesa_adp->va_line_width) { 1314 vesa_adp->va_line_width = bpsl; 1315 info.vi_buffer_size = bpsl * info.vi_height; 1316 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1317 info.vi_buffer_size *= info.vi_planes; 1318 } 1319 } 1320 #endif 1321 1322 if (info.vi_flags & V_INFO_LINEAR) { 1323 #if VESA_DEBUG > 1 1324 printf("VESA: setting up LFB\n"); 1325 #endif 1326 vesa_adp->va_buffer = 1327 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1328 vesa_vmem_max, PAT_WRITE_COMBINING); 1329 vesa_adp->va_window = vesa_adp->va_buffer; 1330 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1331 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1332 } else { 1333 vesa_adp->va_buffer = 0; 1334 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1335 vesa_adp->va_window_size = info.vi_window_size; 1336 vesa_adp->va_window_gran = info.vi_window_gran; 1337 } 1338 vesa_adp->va_buffer_size = info.vi_buffer_size; 1339 vesa_adp->va_window_orig = 0; 1340 vesa_adp->va_disp_start.x = 0; 1341 vesa_adp->va_disp_start.y = 0; 1342 #if VESA_DEBUG > 0 1343 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1344 info.vi_width, vesa_adp->va_line_width); 1345 #endif 1346 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1347 1348 /* move hardware cursor out of the way */ 1349 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1350 1351 return (0); 1352 } 1353 1354 static int 1355 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1356 u_char *data, int ch, int count) 1357 { 1358 1359 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1360 ch, count)); 1361 } 1362 1363 static int 1364 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1365 u_char *data, int ch, int count) 1366 { 1367 1368 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1369 ch, count)); 1370 } 1371 1372 static int 1373 vesa_show_font(video_adapter_t *adp, int page) 1374 { 1375 1376 return ((*prevvidsw->show_font)(adp, page)); 1377 } 1378 1379 static int 1380 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1381 { 1382 int bits; 1383 1384 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1385 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1386 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1387 return (0); 1388 } 1389 1390 return ((*prevvidsw->save_palette)(adp, palette)); 1391 } 1392 1393 static int 1394 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1395 { 1396 int bits; 1397 1398 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1399 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1400 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1401 return (0); 1402 } 1403 1404 return ((*prevvidsw->load_palette)(adp, palette)); 1405 } 1406 1407 static int 1408 vesa_set_border(video_adapter_t *adp, int color) 1409 { 1410 1411 return ((*prevvidsw->set_border)(adp, color)); 1412 } 1413 1414 static int 1415 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1416 { 1417 1418 if (adp != vesa_adp) 1419 return ((*prevvidsw->save_state)(adp, p, size)); 1420 1421 if (vesa_state_buf_size == -1) { 1422 vesa_state_buf_size = vesa_bios_state_buf_size(); 1423 if (vesa_state_buf_size == 0) 1424 return (1); 1425 } 1426 if (size == 0) 1427 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1428 else if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1429 return (1); 1430 1431 ((adp_state_t *)p)->sig = V_STATE_SIG; 1432 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1433 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1434 vesa_state_buf_size)); 1435 } 1436 1437 static int 1438 vesa_load_state(video_adapter_t *adp, void *p) 1439 { 1440 1441 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1442 return ((*prevvidsw->load_state)(adp, p)); 1443 1444 if (vesa_state_buf_size <= 0) 1445 return (1); 1446 1447 /* Try BIOS POST to restore a sane state. */ 1448 (void)vesa_bios_post(); 1449 (void)int10_set_mode(adp->va_initial_bios_mode); 1450 (void)vesa_set_mode(adp, adp->va_mode); 1451 1452 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1453 vesa_state_buf_size)); 1454 } 1455 1456 #if 0 1457 static int 1458 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1459 { 1460 x86regs_t regs; 1461 1462 x86bios_init_regs(®s); 1463 regs.R_AX = 0x4f05; 1464 regs.R_BL = 0x10; 1465 1466 x86bios_intr(®s, 0x10); 1467 1468 if (regs.R_AX != 0x004f) 1469 return (1); 1470 *offset = regs.DX * adp->va_window_gran; 1471 1472 return (0); 1473 } 1474 #endif 1475 1476 static int 1477 vesa_set_origin(video_adapter_t *adp, off_t offset) 1478 { 1479 x86regs_t regs; 1480 1481 /* 1482 * This function should return as quickly as possible to 1483 * maintain good performance of the system. For this reason, 1484 * error checking is kept minimal and let the VESA BIOS to 1485 * detect error. 1486 */ 1487 if (adp != vesa_adp) 1488 return ((*prevvidsw->set_win_org)(adp, offset)); 1489 1490 /* if this is a linear frame buffer, do nothing */ 1491 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1492 return (0); 1493 /* XXX */ 1494 if (adp->va_window_gran == 0) 1495 return (1); 1496 1497 x86bios_init_regs(®s); 1498 regs.R_AX = 0x4f05; 1499 regs.R_DX = offset / adp->va_window_gran; 1500 1501 x86bios_intr(®s, 0x10); 1502 1503 if (regs.R_AX != 0x004f) 1504 return (1); 1505 1506 x86bios_init_regs(®s); 1507 regs.R_AX = 0x4f05; 1508 regs.R_BL = 1; 1509 regs.R_DX = offset / adp->va_window_gran; 1510 x86bios_intr(®s, 0x10); 1511 1512 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1513 return (0); /* XXX */ 1514 } 1515 1516 static int 1517 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1518 { 1519 1520 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1521 } 1522 1523 static int 1524 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1525 { 1526 1527 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1528 } 1529 1530 static int 1531 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1532 int celsize, int blink) 1533 { 1534 1535 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1536 blink)); 1537 } 1538 1539 static int 1540 vesa_blank_display(video_adapter_t *adp, int mode) 1541 { 1542 1543 /* XXX: use VESA DPMS */ 1544 return ((*prevvidsw->blank_display)(adp, mode)); 1545 } 1546 1547 static int 1548 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1549 int prot) 1550 { 1551 1552 #if VESA_DEBUG > 0 1553 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%tx\n", 1554 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1555 #endif 1556 1557 if ((adp == vesa_adp) && 1558 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1559 /* va_window_size == va_buffer_size/vi_planes */ 1560 /* XXX: is this correct? */ 1561 if (offset > adp->va_window_size - PAGE_SIZE) 1562 return (-1); 1563 *paddr = adp->va_info.vi_buffer + offset; 1564 return (0); 1565 } 1566 return ((*prevvidsw->mmap)(adp, offset, paddr, prot)); 1567 } 1568 1569 static int 1570 vesa_clear(video_adapter_t *adp) 1571 { 1572 1573 return ((*prevvidsw->clear)(adp)); 1574 } 1575 1576 static int 1577 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1578 { 1579 1580 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1581 } 1582 1583 static int 1584 vesa_bitblt(video_adapter_t *adp,...) 1585 { 1586 1587 /* FIXME */ 1588 return (1); 1589 } 1590 1591 static int 1592 get_palette(video_adapter_t *adp, int base, int count, 1593 u_char *red, u_char *green, u_char *blue, u_char *trans) 1594 { 1595 u_char *r; 1596 u_char *g; 1597 u_char *b; 1598 int bits; 1599 int error; 1600 1601 if (base < 0 || base >= 256 || count < 0 || count > 256) 1602 return (1); 1603 if ((base + count) > 256) 1604 return (1); 1605 if (!VESA_MODE(adp->va_mode)) 1606 return (1); 1607 1608 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1609 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1610 g = r + count; 1611 b = g + count; 1612 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1613 if (error == 0) { 1614 copyout(r, red, count); 1615 copyout(g, green, count); 1616 copyout(b, blue, count); 1617 if (trans != NULL) { 1618 bzero(r, count); 1619 copyout(r, trans, count); 1620 } 1621 } 1622 free(r, M_DEVBUF); 1623 1624 return (error); 1625 } 1626 1627 static int 1628 set_palette(video_adapter_t *adp, int base, int count, 1629 u_char *red, u_char *green, u_char *blue, u_char *trans) 1630 { 1631 u_char *r; 1632 u_char *g; 1633 u_char *b; 1634 int bits; 1635 int error; 1636 1637 if (base < 0 || base >= 256 || count < 0 || count > 256) 1638 return (1); 1639 if ((base + count) > 256) 1640 return (1); 1641 if (!VESA_MODE(adp->va_mode)) 1642 return (1); 1643 1644 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1645 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1646 g = r + count; 1647 b = g + count; 1648 copyin(red, r, count); 1649 copyin(green, g, count); 1650 copyin(blue, b, count); 1651 1652 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1653 free(r, M_DEVBUF); 1654 1655 return (error); 1656 } 1657 1658 static int 1659 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1660 { 1661 int bytes; 1662 1663 if (adp != vesa_adp) 1664 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1665 1666 switch (cmd) { 1667 case FBIO_SETWINORG: /* set frame buffer window origin */ 1668 if (!VESA_MODE(adp->va_mode)) 1669 return (*prevvidsw->ioctl)(adp, cmd, arg); 1670 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1671 1672 case FBIO_SETDISPSTART: /* set display start address */ 1673 if (!VESA_MODE(adp->va_mode)) 1674 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1675 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1676 ((video_display_start_t *)arg)->y)) 1677 return (ENODEV); 1678 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1679 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1680 return (0); 1681 1682 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1683 if (!VESA_MODE(adp->va_mode)) 1684 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1685 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1686 return (ENODEV); 1687 adp->va_line_width = bytes; 1688 #if VESA_DEBUG > 1 1689 printf("new line width:%d\n", adp->va_line_width); 1690 #endif 1691 return (0); 1692 1693 case FBIO_GETPALETTE: /* get color palette */ 1694 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1695 ((video_color_palette_t *)arg)->count, 1696 ((video_color_palette_t *)arg)->red, 1697 ((video_color_palette_t *)arg)->green, 1698 ((video_color_palette_t *)arg)->blue, 1699 ((video_color_palette_t *)arg)->transparent)) 1700 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1701 return (0); 1702 1703 1704 case FBIO_SETPALETTE: /* set color palette */ 1705 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1706 ((video_color_palette_t *)arg)->count, 1707 ((video_color_palette_t *)arg)->red, 1708 ((video_color_palette_t *)arg)->green, 1709 ((video_color_palette_t *)arg)->blue, 1710 ((video_color_palette_t *)arg)->transparent)) 1711 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1712 return (0); 1713 1714 case FBIOGETCMAP: /* get color palette */ 1715 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1716 ((struct fbcmap *)arg)->count, 1717 ((struct fbcmap *)arg)->red, 1718 ((struct fbcmap *)arg)->green, 1719 ((struct fbcmap *)arg)->blue, NULL)) 1720 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1721 return (0); 1722 1723 case FBIOPUTCMAP: /* set color palette */ 1724 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1725 ((struct fbcmap *)arg)->count, 1726 ((struct fbcmap *)arg)->red, 1727 ((struct fbcmap *)arg)->green, 1728 ((struct fbcmap *)arg)->blue, NULL)) 1729 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1730 return (0); 1731 1732 default: 1733 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1734 } 1735 } 1736 1737 static int 1738 vesa_diag(video_adapter_t *adp, int level) 1739 { 1740 int error; 1741 1742 /* call the previous handler first */ 1743 error = (*prevvidsw->diag)(adp, level); 1744 if (error) 1745 return (error); 1746 1747 if (adp != vesa_adp) 1748 return (1); 1749 1750 if (level <= 0) 1751 return (0); 1752 1753 return (0); 1754 } 1755 1756 static int 1757 vesa_bios_info(int level) 1758 { 1759 #if VESA_DEBUG > 1 1760 struct vesa_mode vmode; 1761 int i; 1762 #endif 1763 uint16_t vers; 1764 1765 vers = vesa_adp_info->v_version; 1766 1767 if (bootverbose) { 1768 /* general adapter information */ 1769 printf( 1770 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1771 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1772 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1773 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1774 vesa_vmodetab, vesa_adp_info->v_modetable); 1775 1776 /* OEM string */ 1777 if (vesa_oemstr != NULL) 1778 printf("VESA: %s\n", vesa_oemstr); 1779 } 1780 1781 if (level <= 0) 1782 return (0); 1783 1784 if (vers >= 0x0200 && bootverbose) { 1785 /* vender name, product name, product revision */ 1786 printf("VESA: %s %s %s\n", 1787 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1788 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1789 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1790 } 1791 1792 #if VESA_DEBUG > 1 1793 /* mode information */ 1794 for (i = 0; 1795 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1796 && (vesa_vmodetab[i] != 0xffff); ++i) { 1797 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1798 continue; 1799 1800 /* print something for diagnostic purpose */ 1801 printf("VESA: mode:0x%03x, flags:0x%04x", 1802 vesa_vmodetab[i], vmode.v_modeattr); 1803 if (vmode.v_modeattr & V_MODEOPTINFO) { 1804 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1805 printf(", G %dx%dx%d %d, ", 1806 vmode.v_width, vmode.v_height, 1807 vmode.v_bpp, vmode.v_planes); 1808 } else { 1809 printf(", T %dx%d, ", 1810 vmode.v_width, vmode.v_height); 1811 } 1812 printf("font:%dx%d, ", 1813 vmode.v_cwidth, vmode.v_cheight); 1814 printf("pages:%d, mem:%d", 1815 vmode.v_ipages + 1, vmode.v_memmodel); 1816 } 1817 if (vmode.v_modeattr & V_MODELFB) { 1818 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1819 vmode.v_lfb, vmode.v_offscreen, 1820 vmode.v_offscreensize*1024); 1821 } 1822 printf("\n"); 1823 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1824 vmode.v_waseg, vmode.v_waattr, 1825 vmode.v_wbseg, vmode.v_wbattr); 1826 printf("size:%dk, gran:%dk\n", 1827 vmode.v_wsize, vmode.v_wgran); 1828 } 1829 #endif /* VESA_DEBUG > 1 */ 1830 1831 return (0); 1832 } 1833 1834 /* module loading */ 1835 1836 static int 1837 vesa_load(void) 1838 { 1839 int error; 1840 int s; 1841 1842 if (vesa_init_done) 1843 return (0); 1844 1845 /* locate a VGA adapter */ 1846 s = spltty(); 1847 vesa_adp = NULL; 1848 error = vesa_configure(0); 1849 splx(s); 1850 1851 if (error == 0) 1852 vesa_bios_info(bootverbose); 1853 1854 return (error); 1855 } 1856 1857 static int 1858 vesa_unload(void) 1859 { 1860 u_char palette[256*3]; 1861 int error; 1862 int s; 1863 1864 /* if the adapter is currently in a VESA mode, don't unload */ 1865 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1866 return (EBUSY); 1867 /* 1868 * FIXME: if there is at least one vty which is in a VESA mode, 1869 * we shouldn't be unloading! XXX 1870 */ 1871 1872 s = spltty(); 1873 if ((error = vesa_unload_ioctl()) == 0) { 1874 if (vesa_adp != NULL) { 1875 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1876 vesa_bios_save_palette(0, 256, palette, 8); 1877 vesa_bios_set_dac(6); 1878 vesa_adp->va_flags &= ~V_ADP_DAC8; 1879 vesa_bios_load_palette(0, 256, palette, 6); 1880 } 1881 vesa_adp->va_flags &= ~V_ADP_VESA; 1882 vidsw[vesa_adp->va_index] = prevvidsw; 1883 } 1884 } 1885 splx(s); 1886 1887 if (vesa_adp_info != NULL) 1888 free(vesa_adp_info, M_DEVBUF); 1889 if (vesa_oemstr != NULL) 1890 free(vesa_oemstr, M_DEVBUF); 1891 if (vesa_venderstr != NULL) 1892 free(vesa_venderstr, M_DEVBUF); 1893 if (vesa_prodstr != NULL) 1894 free(vesa_prodstr, M_DEVBUF); 1895 if (vesa_revstr != NULL) 1896 free(vesa_revstr, M_DEVBUF); 1897 if (vesa_vmode != &vesa_vmode_empty) 1898 free(vesa_vmode, M_DEVBUF); 1899 return (error); 1900 } 1901 1902 static int 1903 vesa_mod_event(module_t mod, int type, void *data) 1904 { 1905 1906 switch (type) { 1907 case MOD_LOAD: 1908 return (vesa_load()); 1909 case MOD_UNLOAD: 1910 return (vesa_unload()); 1911 } 1912 return (EOPNOTSUPP); 1913 } 1914 1915 static moduledata_t vesa_mod = { 1916 "vesa", 1917 vesa_mod_event, 1918 NULL, 1919 }; 1920 1921 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1922 MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1923 1924 #endif /* VGA_NO_MODE_CHANGE */
Cache object: 59128c1386c729c71d739e1b32b51ce8
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