1 /*- 2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_vga.h" 31 #include "opt_vesa.h" 32 33 #ifndef VGA_NO_MODE_CHANGE 34 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/module.h> 40 #include <sys/malloc.h> 41 #include <sys/fbio.h> 42 43 #include <vm/vm.h> 44 #include <vm/vm_extern.h> 45 #include <vm/vm_kern.h> 46 #include <vm/vm_param.h> 47 #include <vm/pmap.h> 48 49 #include <machine/pc/bios.h> 50 #include <dev/fb/vesa.h> 51 52 #include <dev/fb/fbreg.h> 53 #include <dev/fb/vgareg.h> 54 55 #include <dev/pci/pcivar.h> 56 57 #include <isa/isareg.h> 58 59 #include <compat/x86bios/x86bios.h> 60 61 #define VESA_VIA_CLE266 "VIA CLE266\r\n" 62 63 #ifndef VESA_DEBUG 64 #define VESA_DEBUG 0 65 #endif 66 67 /* VESA video adapter state buffer stub */ 68 struct adp_state { 69 int sig; 70 #define V_STATE_SIG 0x61736576 71 u_char regs[1]; 72 }; 73 typedef struct adp_state adp_state_t; 74 75 /* VESA video adapter */ 76 static video_adapter_t *vesa_adp = NULL; 77 static ssize_t vesa_state_buf_size = -1; 78 79 /* VESA functions */ 80 #if 0 81 static int vesa_nop(void); 82 #endif 83 static int vesa_error(void); 84 static vi_probe_t vesa_probe; 85 static vi_init_t vesa_init; 86 static vi_get_info_t vesa_get_info; 87 static vi_query_mode_t vesa_query_mode; 88 static vi_set_mode_t vesa_set_mode; 89 static vi_save_font_t vesa_save_font; 90 static vi_load_font_t vesa_load_font; 91 static vi_show_font_t vesa_show_font; 92 static vi_save_palette_t vesa_save_palette; 93 static vi_load_palette_t vesa_load_palette; 94 static vi_set_border_t vesa_set_border; 95 static vi_save_state_t vesa_save_state; 96 static vi_load_state_t vesa_load_state; 97 static vi_set_win_org_t vesa_set_origin; 98 static vi_read_hw_cursor_t vesa_read_hw_cursor; 99 static vi_set_hw_cursor_t vesa_set_hw_cursor; 100 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 101 static vi_blank_display_t vesa_blank_display; 102 static vi_mmap_t vesa_mmap; 103 static vi_ioctl_t vesa_ioctl; 104 static vi_clear_t vesa_clear; 105 static vi_fill_rect_t vesa_fill_rect; 106 static vi_bitblt_t vesa_bitblt; 107 static vi_diag_t vesa_diag; 108 static int vesa_bios_info(int level); 109 110 static video_switch_t vesavidsw = { 111 vesa_probe, 112 vesa_init, 113 vesa_get_info, 114 vesa_query_mode, 115 vesa_set_mode, 116 vesa_save_font, 117 vesa_load_font, 118 vesa_show_font, 119 vesa_save_palette, 120 vesa_load_palette, 121 vesa_set_border, 122 vesa_save_state, 123 vesa_load_state, 124 vesa_set_origin, 125 vesa_read_hw_cursor, 126 vesa_set_hw_cursor, 127 vesa_set_hw_cursor_shape, 128 vesa_blank_display, 129 vesa_mmap, 130 vesa_ioctl, 131 vesa_clear, 132 vesa_fill_rect, 133 vesa_bitblt, 134 vesa_error, 135 vesa_error, 136 vesa_diag, 137 }; 138 139 static video_switch_t *prevvidsw; 140 141 /* VESA BIOS video modes */ 142 #define VESA_MAXMODES 64 143 #define EOT (-1) 144 #define NA (-2) 145 146 #define MODE_TABLE_DELTA 8 147 148 static int vesa_vmode_max = 0; 149 static video_info_t vesa_vmode_empty = { EOT }; 150 static video_info_t *vesa_vmode = &vesa_vmode_empty; 151 152 static int vesa_init_done = FALSE; 153 static int has_vesa_bios = FALSE; 154 static struct vesa_info *vesa_adp_info = NULL; 155 static u_int16_t *vesa_vmodetab = NULL; 156 static char *vesa_oemstr = NULL; 157 static char *vesa_venderstr = NULL; 158 static char *vesa_prodstr = NULL; 159 static char *vesa_revstr = NULL; 160 161 /* local macros and functions */ 162 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 163 164 static int int10_set_mode(int mode); 165 static int vesa_bios_post(void); 166 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 167 static int vesa_bios_set_mode(int mode); 168 #if 0 169 static int vesa_bios_get_dac(void); 170 #endif 171 static int vesa_bios_set_dac(int bits); 172 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 173 int bits); 174 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 175 u_char *b, int bits); 176 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 177 int bits); 178 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 179 u_char *b, int bits); 180 #define STATE_SIZE 0 181 #define STATE_SAVE 1 182 #define STATE_LOAD 2 183 #define STATE_HW (1<<0) 184 #define STATE_DATA (1<<1) 185 #define STATE_DAC (1<<2) 186 #define STATE_REG (1<<3) 187 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 188 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 189 static ssize_t vesa_bios_state_buf_size(void); 190 static int vesa_bios_save_restore(int code, void *p, size_t size); 191 #if 0 192 static int vesa_bios_get_line_length(void); 193 #endif 194 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 195 #if 0 196 static int vesa_bios_get_start(int *x, int *y); 197 #endif 198 static int vesa_bios_set_start(int x, int y); 199 static int vesa_map_gen_mode_num(int type, int color, int mode); 200 static int vesa_translate_flags(u_int16_t vflags); 201 static int vesa_translate_mmodel(u_int8_t vmodel); 202 static int vesa_bios_init(void); 203 static void vesa_clear_modes(video_info_t *info, int color); 204 205 #if 0 206 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 207 #endif 208 209 /* INT 10 BIOS calls */ 210 static int 211 int10_set_mode(int mode) 212 { 213 x86regs_t regs; 214 215 x86bios_init_regs(®s); 216 regs.R_AL = mode; 217 218 x86bios_intr(®s, 0x10); 219 220 return (0); 221 } 222 223 static int 224 vesa_bios_post(void) 225 { 226 x86regs_t regs; 227 devclass_t dc; 228 device_t *devs; 229 device_t dev; 230 int count, i, is_pci; 231 232 if (x86bios_get_orm(0xc0000) == NULL) 233 return (1); 234 235 dev = NULL; 236 is_pci = 0; 237 238 /* Find the matching PCI video controller. */ 239 dc = devclass_find("vgapci"); 240 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 241 for (dev = NULL, i = 0; dev == NULL && i < count; devs++, i++) 242 if (device_get_flags(*devs) != 0 && 243 x86bios_match_device(0xc0000, *devs)) { 244 dev = *devs; 245 is_pci = 1; 246 break; 247 } 248 free(devs, M_TEMP); 249 } 250 251 /* Try VGA if a PCI device is not found. */ 252 if (dev == NULL) { 253 dc = devclass_find(VGA_DRIVER_NAME); 254 if (dc != NULL) 255 dev = devclass_get_device(dc, 0); 256 } 257 258 if (bootverbose) 259 printf("%s: calling BIOS POST\n", 260 dev == NULL ? "VESA" : device_get_nameunit(dev)); 261 262 x86bios_init_regs(®s); 263 if (is_pci) { 264 regs.R_AH = pci_get_bus(dev); 265 regs.R_AL = (pci_get_slot(dev) << 3) | 266 (pci_get_function(dev) & 0x07); 267 } 268 regs.R_DL = 0x80; 269 x86bios_call(®s, 0xc000, 0x0003); 270 271 if (x86bios_get_intr(0x10) == 0) 272 return (1); 273 274 return (0); 275 } 276 277 /* VESA BIOS calls */ 278 static int 279 vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 280 { 281 x86regs_t regs; 282 uint32_t offs; 283 void *buf; 284 285 buf = x86bios_alloc(&offs, sizeof(*vmode)); 286 if (buf == NULL) 287 return (1); 288 289 x86bios_init_regs(®s); 290 regs.R_AX = 0x4f01; 291 regs.R_CX = mode; 292 293 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 294 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 295 296 x86bios_intr(®s, 0x10); 297 298 if (regs.R_AX != 0x004f) { 299 x86bios_free(buf, sizeof(*vmode)); 300 return (1); 301 } 302 303 bcopy(buf, vmode, sizeof(*vmode)); 304 x86bios_free(buf, sizeof(*vmode)); 305 306 return (0); 307 } 308 309 static int 310 vesa_bios_set_mode(int mode) 311 { 312 x86regs_t regs; 313 314 x86bios_init_regs(®s); 315 regs.R_AX = 0x4f02; 316 regs.R_BX = mode; 317 318 x86bios_intr(®s, 0x10); 319 320 return (regs.R_AX != 0x004f); 321 } 322 323 #if 0 324 static int 325 vesa_bios_get_dac(void) 326 { 327 x86regs_t regs; 328 329 x86bios_init_regs(®s); 330 regs.R_AX = 0x4f08; 331 regs.R_BL = 1; 332 333 x86bios_intr(®s, 0x10); 334 335 if (regs.R_AX != 0x004f) 336 return (6); 337 338 return (regs.R_BH); 339 } 340 #endif 341 342 static int 343 vesa_bios_set_dac(int bits) 344 { 345 x86regs_t regs; 346 347 x86bios_init_regs(®s); 348 regs.R_AX = 0x4f08; 349 /* regs.R_BL = 0; */ 350 regs.R_BH = bits; 351 352 x86bios_intr(®s, 0x10); 353 354 if (regs.R_AX != 0x004f) 355 return (6); 356 357 return (regs.R_BH); 358 } 359 360 static int 361 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 362 { 363 x86regs_t regs; 364 uint32_t offs; 365 u_char *p; 366 int i; 367 368 p = (u_char *)x86bios_alloc(&offs, colors * 4); 369 if (p == NULL) 370 return (1); 371 372 x86bios_init_regs(®s); 373 regs.R_AX = 0x4f09; 374 regs.R_BL = 1; 375 regs.R_CX = colors; 376 regs.R_DX = start; 377 378 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 379 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 380 381 x86bios_intr(®s, 0x10); 382 383 if (regs.R_AX != 0x004f) { 384 x86bios_free(p, colors * 4); 385 return (1); 386 } 387 388 bits = 8 - bits; 389 for (i = 0; i < colors; ++i) { 390 palette[i * 3] = p[i * 4 + 2] << bits; 391 palette[i * 3 + 1] = p[i * 4 + 1] << bits; 392 palette[i * 3 + 2] = p[i * 4] << bits; 393 } 394 x86bios_free(p, colors * 4); 395 396 return (0); 397 } 398 399 static int 400 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 401 int bits) 402 { 403 x86regs_t regs; 404 uint32_t offs; 405 u_char *p; 406 int i; 407 408 p = (u_char *)x86bios_alloc(&offs, colors * 4); 409 if (p == NULL) 410 return (1); 411 412 x86bios_init_regs(®s); 413 regs.R_AX = 0x4f09; 414 regs.R_BL = 1; 415 regs.R_CX = colors; 416 regs.R_DX = start; 417 418 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 419 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 420 421 x86bios_intr(®s, 0x10); 422 423 if (regs.R_AX != 0x004f) { 424 x86bios_free(p, colors * 4); 425 return (1); 426 } 427 428 bits = 8 - bits; 429 for (i = 0; i < colors; ++i) { 430 r[i] = p[i * 4 + 2] << bits; 431 g[i] = p[i * 4 + 1] << bits; 432 b[i] = p[i * 4] << bits; 433 } 434 x86bios_free(p, colors * 4); 435 436 return (0); 437 } 438 439 static int 440 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 441 { 442 x86regs_t regs; 443 uint32_t offs; 444 u_char *p; 445 int i; 446 447 p = (u_char *)x86bios_alloc(&offs, colors * 4); 448 if (p == NULL) 449 return (1); 450 451 x86bios_init_regs(®s); 452 regs.R_AX = 0x4f09; 453 /* regs.R_BL = 0; */ 454 regs.R_CX = colors; 455 regs.R_DX = start; 456 457 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 458 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 459 460 bits = 8 - bits; 461 for (i = 0; i < colors; ++i) { 462 p[i * 4] = palette[i * 3 + 2] >> bits; 463 p[i * 4 + 1] = palette[i * 3 + 1] >> bits; 464 p[i * 4 + 2] = palette[i * 3] >> bits; 465 p[i * 4 + 3] = 0; 466 } 467 x86bios_intr(®s, 0x10); 468 x86bios_free(p, colors * 4); 469 470 return (regs.R_AX != 0x004f); 471 } 472 473 static int 474 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 475 int bits) 476 { 477 x86regs_t regs; 478 uint32_t offs; 479 u_char *p; 480 int i; 481 482 p = (u_char *)x86bios_alloc(&offs, colors * 4); 483 if (p == NULL) 484 return (1); 485 486 x86bios_init_regs(®s); 487 regs.R_AX = 0x4f09; 488 /* regs.R_BL = 0; */ 489 regs.R_CX = colors; 490 regs.R_DX = start; 491 492 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 493 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 494 495 bits = 8 - bits; 496 for (i = 0; i < colors; ++i) { 497 p[i * 4] = b[i] >> bits; 498 p[i * 4 + 1] = g[i] >> bits; 499 p[i * 4 + 2] = r[i] >> bits; 500 p[i * 4 + 3] = 0; 501 } 502 x86bios_intr(®s, 0x10); 503 x86bios_free(p, colors * 4); 504 505 return (regs.R_AX != 0x004f); 506 } 507 508 static ssize_t 509 vesa_bios_state_buf_size(void) 510 { 511 x86regs_t regs; 512 513 x86bios_init_regs(®s); 514 regs.R_AX = 0x4f04; 515 /* regs.R_DL = STATE_SIZE; */ 516 regs.R_CX = STATE_ALL; 517 518 x86bios_intr(®s, 0x10); 519 520 if (regs.R_AX != 0x004f) 521 return (0); 522 523 return (regs.R_BX * 64); 524 } 525 526 static int 527 vesa_bios_save_restore(int code, void *p, size_t size) 528 { 529 x86regs_t regs; 530 uint32_t offs; 531 void *buf; 532 533 if (code != STATE_SAVE && code != STATE_LOAD) 534 return (1); 535 536 buf = x86bios_alloc(&offs, size); 537 538 x86bios_init_regs(®s); 539 regs.R_AX = 0x4f04; 540 regs.R_DL = code; 541 regs.R_CX = STATE_ALL; 542 543 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 544 regs.R_BX = X86BIOS_PHYSTOOFF(offs); 545 546 switch (code) { 547 case STATE_SAVE: 548 x86bios_intr(®s, 0x10); 549 bcopy(buf, p, size); 550 break; 551 case STATE_LOAD: 552 bcopy(p, buf, size); 553 x86bios_intr(®s, 0x10); 554 break; 555 } 556 x86bios_free(buf, size); 557 558 return (regs.R_AX != 0x004f); 559 } 560 561 #if 0 562 static int 563 vesa_bios_get_line_length(void) 564 { 565 x86regs_t regs; 566 567 x86bios_init_regs(®s); 568 regs.R_AX = 0x4f06; 569 regs.R_BL = 1; 570 571 x86bios_intr(®s, 0x10); 572 573 if (regs.R_AX != 0x004f) 574 return (-1); 575 576 return (regs.R_BX); 577 } 578 #endif 579 580 static int 581 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 582 { 583 x86regs_t regs; 584 585 x86bios_init_regs(®s); 586 regs.R_AX = 0x4f06; 587 /* regs.R_BL = 0; */ 588 regs.R_CX = pixel; 589 590 x86bios_intr(®s, 0x10); 591 592 #if VESA_DEBUG > 1 593 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 594 #endif 595 if (regs.R_AX != 0x004f) 596 return (-1); 597 598 if (bytes != NULL) 599 *bytes = regs.R_BX; 600 if (lines != NULL) 601 *lines = regs.R_DX; 602 603 return (0); 604 } 605 606 #if 0 607 static int 608 vesa_bios_get_start(int *x, int *y) 609 { 610 x86regs_t regs; 611 612 x86bios_init_regs(®s); 613 regs.R_AX = 0x4f07; 614 regs.R_BL = 1; 615 616 x86bios_intr(®s, 0x10); 617 618 if (regs.R_AX != 0x004f) 619 return (-1); 620 621 *x = regs.R_CX; 622 *y = regs.R_DX; 623 624 return (0); 625 } 626 #endif 627 628 static int 629 vesa_bios_set_start(int x, int y) 630 { 631 x86regs_t regs; 632 633 x86bios_init_regs(®s); 634 regs.R_AX = 0x4f07; 635 regs.R_BL = 0x80; 636 regs.R_CX = x; 637 regs.R_DX = y; 638 639 x86bios_intr(®s, 0x10); 640 641 return (regs.R_AX != 0x004f); 642 } 643 644 /* map a generic video mode to a known mode */ 645 static int 646 vesa_map_gen_mode_num(int type, int color, int mode) 647 { 648 static struct { 649 int from; 650 int to; 651 } mode_map[] = { 652 { M_TEXT_132x25, M_VESA_C132x25 }, 653 { M_TEXT_132x43, M_VESA_C132x43 }, 654 { M_TEXT_132x50, M_VESA_C132x50 }, 655 { M_TEXT_132x60, M_VESA_C132x60 }, 656 }; 657 int i; 658 659 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 660 if (mode_map[i].from == mode) 661 return (mode_map[i].to); 662 } 663 return (mode); 664 } 665 666 static int 667 vesa_translate_flags(u_int16_t vflags) 668 { 669 static struct { 670 u_int16_t mask; 671 int set; 672 int reset; 673 } ftable[] = { 674 { V_MODECOLOR, V_INFO_COLOR, 0 }, 675 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 676 { V_MODELFB, V_INFO_LINEAR, 0 }, 677 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 678 }; 679 int flags; 680 int i; 681 682 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 683 flags |= (vflags & ftable[i].mask) ? 684 ftable[i].set : ftable[i].reset; 685 } 686 return (flags); 687 } 688 689 static int 690 vesa_translate_mmodel(u_int8_t vmodel) 691 { 692 static struct { 693 u_int8_t vmodel; 694 int mmodel; 695 } mtable[] = { 696 { V_MMTEXT, V_INFO_MM_TEXT }, 697 { V_MMCGA, V_INFO_MM_CGA }, 698 { V_MMHGC, V_INFO_MM_HGC }, 699 { V_MMEGA, V_INFO_MM_PLANAR }, 700 { V_MMPACKED, V_INFO_MM_PACKED }, 701 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 702 }; 703 int i; 704 705 for (i = 0; mtable[i].mmodel >= 0; ++i) { 706 if (mtable[i].vmodel == vmodel) 707 return (mtable[i].mmodel); 708 } 709 return (V_INFO_MM_OTHER); 710 } 711 712 #define VESA_MAXSTR 256 713 714 #define VESA_STRCPY(dst, src) do { \ 715 char *str; \ 716 int i; \ 717 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 718 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 719 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 720 dst[i] = str[i]; \ 721 dst[i] = '\0'; \ 722 } while (0) 723 724 static int 725 vesa_bios_init(void) 726 { 727 static struct vesa_info buf; 728 struct vesa_mode vmode; 729 video_info_t *p; 730 x86regs_t regs; 731 size_t bsize; 732 size_t msize; 733 void *vmbuf; 734 uint32_t offs; 735 uint16_t vers; 736 int bpsl; 737 int is_via_cle266; 738 int modes; 739 int i; 740 741 if (vesa_init_done) 742 return (0); 743 744 has_vesa_bios = FALSE; 745 vesa_adp_info = NULL; 746 vesa_vmode_max = 0; 747 vesa_vmode[0].vi_mode = EOT; 748 749 /* 750 * If the VBE real mode interrupt vector is not found, try BIOS POST. 751 */ 752 if (x86bios_get_intr(0x10) == 0) { 753 if (vesa_bios_post() != 0) 754 return (1); 755 if (bootverbose) { 756 offs = x86bios_get_intr(0x10); 757 printf("VESA: interrupt vector installed (0x%x)\n", 758 BIOS_SADDRTOLADDR(offs)); 759 } 760 } 761 762 x86bios_init_regs(®s); 763 regs.R_AX = 0x4f00; 764 765 vmbuf = x86bios_alloc(&offs, sizeof(buf)); 766 if (vmbuf == NULL) 767 return (1); 768 769 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 770 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 771 772 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 773 x86bios_intr(®s, 0x10); 774 775 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 776 goto fail; 777 778 bcopy(vmbuf, &buf, sizeof(buf)); 779 780 vesa_adp_info = &buf; 781 if (bootverbose) { 782 printf("VESA: information block\n"); 783 hexdump(&buf, sizeof(buf), NULL, HD_OMIT_CHARS); 784 } 785 786 vers = buf.v_version = le16toh(buf.v_version); 787 buf.v_oemstr = le32toh(buf.v_oemstr); 788 buf.v_flags = le32toh(buf.v_flags); 789 buf.v_modetable = le32toh(buf.v_modetable); 790 buf.v_memsize = le16toh(buf.v_memsize); 791 buf.v_revision = le16toh(buf.v_revision); 792 buf.v_venderstr = le32toh(buf.v_venderstr); 793 buf.v_prodstr = le32toh(buf.v_prodstr); 794 buf.v_revstr = le32toh(buf.v_revstr); 795 796 if (vers < 0x0102) { 797 printf("VESA: VBE version %d.%d is not supported; " 798 "version 1.2 or later is required.\n", 799 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 800 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 801 return (1); 802 } 803 804 VESA_STRCPY(vesa_oemstr, buf.v_oemstr); 805 if (vers >= 0x0200) { 806 VESA_STRCPY(vesa_venderstr, buf.v_venderstr); 807 VESA_STRCPY(vesa_prodstr, buf.v_prodstr); 808 VESA_STRCPY(vesa_revstr, buf.v_revstr); 809 } 810 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 811 sizeof(VESA_VIA_CLE266)) == 0; 812 813 if (buf.v_modetable == 0) 814 goto fail; 815 816 msize = (size_t)buf.v_memsize * 64 * 1024; 817 818 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf.v_modetable)); 819 820 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 821 (vesa_vmodetab[i] != 0xffff); ++i) { 822 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 823 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 824 continue; 825 826 vmode.v_modeattr = le16toh(vmode.v_modeattr); 827 vmode.v_wgran = le16toh(vmode.v_wgran); 828 vmode.v_wsize = le16toh(vmode.v_wsize); 829 vmode.v_waseg = le16toh(vmode.v_waseg); 830 vmode.v_wbseg = le16toh(vmode.v_wbseg); 831 vmode.v_posfunc = le32toh(vmode.v_posfunc); 832 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 833 vmode.v_width = le16toh(vmode.v_width); 834 vmode.v_height = le16toh(vmode.v_height); 835 vmode.v_lfb = le32toh(vmode.v_lfb); 836 vmode.v_offscreen = le32toh(vmode.v_offscreen); 837 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 838 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 839 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 840 841 /* reject unsupported modes */ 842 #if 0 843 if ((vmode.v_modeattr & 844 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 845 (V_MODESUPP | V_MODEOPTINFO)) 846 continue; 847 #else 848 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 849 #if VESA_DEBUG > 1 850 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 851 " attr = %x\n", 852 vmode.v_modeattr & V_MODEGRAPHICS ? 853 "graphics" : "text", 854 vmode.v_width, vmode.v_height, vmode.v_bpp, 855 vmode.v_modeattr); 856 #endif 857 continue; 858 } 859 #endif 860 861 bpsl = (vmode.v_modeattr & V_MODELFB) != 0 && vers >= 0x0300 ? 862 vmode.v_linbpscanline : vmode.v_bpscanline; 863 bsize = bpsl * vmode.v_height; 864 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 865 bsize *= vmode.v_planes; 866 867 /* Does it have enough memory to support this mode? */ 868 if (msize < bsize) { 869 #if VESA_DEBUG > 1 870 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 871 " attr = %x, not enough memory\n", 872 vmode.v_modeattr & V_MODEGRAPHICS ? 873 "graphics" : "text", 874 vmode.v_width, vmode.v_height, vmode.v_bpp, 875 vmode.v_modeattr); 876 #endif 877 continue; 878 } 879 880 /* expand the array if necessary */ 881 if (modes >= vesa_vmode_max) { 882 vesa_vmode_max += MODE_TABLE_DELTA; 883 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 884 M_DEVBUF, M_WAITOK); 885 #if VESA_DEBUG > 1 886 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 887 modes, vesa_vmode_max); 888 #endif 889 if (modes > 0) { 890 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 891 free(vesa_vmode, M_DEVBUF); 892 } 893 vesa_vmode = p; 894 } 895 896 #if VESA_DEBUG > 1 897 printf("Found VESA %s mode: %d x %d x %d bpp\n", 898 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 899 vmode.v_width, vmode.v_height, vmode.v_bpp); 900 #endif 901 if (is_via_cle266) { 902 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 903 vmode.v_width &= 0xff; 904 vmode.v_waseg = 0xb8000 >> 4; 905 } 906 } 907 908 /* copy some fields */ 909 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 910 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 911 vesa_vmode[modes].vi_width = vmode.v_width; 912 vesa_vmode[modes].vi_height = vmode.v_height; 913 vesa_vmode[modes].vi_depth = vmode.v_bpp; 914 vesa_vmode[modes].vi_planes = vmode.v_planes; 915 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 916 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 917 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 918 /* XXX window B */ 919 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 920 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 921 if (vmode.v_modeattr & V_MODELFB) 922 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 923 vesa_vmode[modes].vi_buffer_size = bsize; 924 vesa_vmode[modes].vi_mem_model = 925 vesa_translate_mmodel(vmode.v_memmodel); 926 switch (vesa_vmode[modes].vi_mem_model) { 927 case V_INFO_MM_DIRECT: 928 if ((vmode.v_modeattr & V_MODELFB) != 0 && 929 vers >= 0x0300) { 930 vesa_vmode[modes].vi_pixel_fields[0] = 931 vmode.v_linredfieldpos; 932 vesa_vmode[modes].vi_pixel_fields[1] = 933 vmode.v_lingreenfieldpos; 934 vesa_vmode[modes].vi_pixel_fields[2] = 935 vmode.v_linbluefieldpos; 936 vesa_vmode[modes].vi_pixel_fields[3] = 937 vmode.v_linresfieldpos; 938 vesa_vmode[modes].vi_pixel_fsizes[0] = 939 vmode.v_linredmasksize; 940 vesa_vmode[modes].vi_pixel_fsizes[1] = 941 vmode.v_lingreenmasksize; 942 vesa_vmode[modes].vi_pixel_fsizes[2] = 943 vmode.v_linbluemasksize; 944 vesa_vmode[modes].vi_pixel_fsizes[3] = 945 vmode.v_linresmasksize; 946 } else { 947 vesa_vmode[modes].vi_pixel_fields[0] = 948 vmode.v_redfieldpos; 949 vesa_vmode[modes].vi_pixel_fields[1] = 950 vmode.v_greenfieldpos; 951 vesa_vmode[modes].vi_pixel_fields[2] = 952 vmode.v_bluefieldpos; 953 vesa_vmode[modes].vi_pixel_fields[3] = 954 vmode.v_resfieldpos; 955 vesa_vmode[modes].vi_pixel_fsizes[0] = 956 vmode.v_redmasksize; 957 vesa_vmode[modes].vi_pixel_fsizes[1] = 958 vmode.v_greenmasksize; 959 vesa_vmode[modes].vi_pixel_fsizes[2] = 960 vmode.v_bluemasksize; 961 vesa_vmode[modes].vi_pixel_fsizes[3] = 962 vmode.v_resmasksize; 963 } 964 /* FALLTHROUGH */ 965 case V_INFO_MM_PACKED: 966 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 967 break; 968 } 969 vesa_vmode[modes].vi_flags = 970 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 971 972 ++modes; 973 } 974 vesa_vmode[modes].vi_mode = EOT; 975 976 if (bootverbose) 977 printf("VESA: %d mode(s) found\n", modes); 978 979 has_vesa_bios = (modes > 0); 980 if (!has_vesa_bios) 981 goto fail; 982 983 x86bios_free(vmbuf, sizeof(buf)); 984 return (0); 985 986 fail: 987 if (vmbuf != NULL) 988 x86bios_free(vmbuf, sizeof(buf)); 989 if (vesa_oemstr != NULL) { 990 free(vesa_oemstr, M_DEVBUF); 991 vesa_oemstr = NULL; 992 } 993 if (vesa_venderstr != NULL) { 994 free(vesa_venderstr, M_DEVBUF); 995 vesa_venderstr = NULL; 996 } 997 if (vesa_prodstr != NULL) { 998 free(vesa_prodstr, M_DEVBUF); 999 vesa_prodstr = NULL; 1000 } 1001 if (vesa_revstr != NULL) { 1002 free(vesa_revstr, M_DEVBUF); 1003 vesa_revstr = NULL; 1004 } 1005 return (1); 1006 } 1007 1008 static void 1009 vesa_clear_modes(video_info_t *info, int color) 1010 { 1011 while (info->vi_mode != EOT) { 1012 if ((info->vi_flags & V_INFO_COLOR) != color) 1013 info->vi_mode = NA; 1014 ++info; 1015 } 1016 } 1017 1018 /* entry points */ 1019 1020 static int 1021 vesa_configure(int flags) 1022 { 1023 video_adapter_t *adp; 1024 int adapters; 1025 int error; 1026 int i; 1027 1028 if (vesa_init_done) 1029 return (0); 1030 if (flags & VIO_PROBE_ONLY) 1031 return (0); 1032 1033 /* 1034 * If the VESA module has already been loaded, abort loading 1035 * the module this time. 1036 */ 1037 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1038 if (adp->va_flags & V_ADP_VESA) 1039 return (ENXIO); 1040 if (adp->va_type == KD_VGA) 1041 break; 1042 } 1043 1044 /* 1045 * The VGA adapter is not found. This is because either 1046 * 1) the VGA driver has not been initialized, or 2) the VGA card 1047 * is not present. If 1) is the case, we shall defer 1048 * initialization for now and try again later. 1049 */ 1050 if (adp == NULL) { 1051 vga_sub_configure = vesa_configure; 1052 return (ENODEV); 1053 } 1054 1055 /* count number of registered adapters */ 1056 for (++i; vid_get_adapter(i) != NULL; ++i) 1057 ; 1058 adapters = i; 1059 1060 /* call VESA BIOS */ 1061 vesa_adp = adp; 1062 if (vesa_bios_init()) { 1063 vesa_adp = NULL; 1064 return (ENXIO); 1065 } 1066 vesa_adp->va_flags |= V_ADP_VESA; 1067 1068 /* remove conflicting modes if we have more than one adapter */ 1069 if (adapters > 1) { 1070 vesa_clear_modes(vesa_vmode, 1071 (vesa_adp->va_flags & V_ADP_COLOR) ? 1072 V_INFO_COLOR : 0); 1073 } 1074 1075 if ((error = vesa_load_ioctl()) == 0) { 1076 prevvidsw = vidsw[vesa_adp->va_index]; 1077 vidsw[vesa_adp->va_index] = &vesavidsw; 1078 vesa_init_done = TRUE; 1079 } else { 1080 vesa_adp = NULL; 1081 return (error); 1082 } 1083 1084 return (0); 1085 } 1086 1087 #if 0 1088 static int 1089 vesa_nop(void) 1090 { 1091 1092 return (0); 1093 } 1094 #endif 1095 1096 static int 1097 vesa_error(void) 1098 { 1099 1100 return (1); 1101 } 1102 1103 static int 1104 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1105 { 1106 1107 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1108 } 1109 1110 static int 1111 vesa_init(int unit, video_adapter_t *adp, int flags) 1112 { 1113 1114 return ((*prevvidsw->init)(unit, adp, flags)); 1115 } 1116 1117 static int 1118 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1119 { 1120 int i; 1121 1122 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1123 return (0); 1124 1125 if (adp != vesa_adp) 1126 return (1); 1127 1128 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1129 vesa_adp->va_flags & V_ADP_COLOR, mode); 1130 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1131 if (vesa_vmode[i].vi_mode == NA) 1132 continue; 1133 if (vesa_vmode[i].vi_mode == mode) { 1134 *info = vesa_vmode[i]; 1135 return (0); 1136 } 1137 } 1138 return (1); 1139 } 1140 1141 static int 1142 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1143 { 1144 int i; 1145 1146 if ((*prevvidsw->query_mode)(adp, info) == 0) 1147 return (0); 1148 if (adp != vesa_adp) 1149 return (ENODEV); 1150 1151 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1152 if ((info->vi_width != 0) 1153 && (info->vi_width != vesa_vmode[i].vi_width)) 1154 continue; 1155 if ((info->vi_height != 0) 1156 && (info->vi_height != vesa_vmode[i].vi_height)) 1157 continue; 1158 if ((info->vi_cwidth != 0) 1159 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1160 continue; 1161 if ((info->vi_cheight != 0) 1162 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1163 continue; 1164 if ((info->vi_depth != 0) 1165 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1166 continue; 1167 if ((info->vi_planes != 0) 1168 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1169 continue; 1170 /* pixel format, memory model */ 1171 if ((info->vi_flags != 0) 1172 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1173 continue; 1174 *info = vesa_vmode[i]; 1175 return (0); 1176 } 1177 return (ENODEV); 1178 } 1179 1180 static int 1181 vesa_set_mode(video_adapter_t *adp, int mode) 1182 { 1183 video_info_t info; 1184 1185 if (adp != vesa_adp) 1186 return ((*prevvidsw->set_mode)(adp, mode)); 1187 1188 mode = vesa_map_gen_mode_num(adp->va_type, 1189 adp->va_flags & V_ADP_COLOR, mode); 1190 #if VESA_DEBUG > 0 1191 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1192 adp->va_mode, adp->va_mode, mode, mode); 1193 #endif 1194 /* 1195 * If the current mode is a VESA mode and the new mode is not, 1196 * restore the state of the adapter first by setting one of the 1197 * standard VGA mode, so that non-standard, extended SVGA registers 1198 * are set to the state compatible with the standard VGA modes. 1199 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1200 * the new mode correctly. 1201 */ 1202 if (VESA_MODE(adp->va_mode)) { 1203 if (!VESA_MODE(mode) && 1204 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1205 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1206 vesa_bios_set_dac(6); 1207 adp->va_flags &= ~V_ADP_DAC8; 1208 } 1209 int10_set_mode(adp->va_initial_bios_mode); 1210 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1211 pmap_unmapdev(adp->va_buffer, 1212 adp->va_buffer_size); 1213 /* 1214 * Once (*prevvidsw->get_info)() succeeded, 1215 * (*prevvidsw->set_mode)() below won't fail... 1216 */ 1217 } 1218 } 1219 1220 /* we may not need to handle this mode after all... */ 1221 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1222 return (0); 1223 1224 /* is the new mode supported? */ 1225 if (vesa_get_info(adp, mode, &info)) 1226 return (1); 1227 /* assert(VESA_MODE(mode)); */ 1228 1229 #if VESA_DEBUG > 0 1230 printf("VESA: about to set a VESA mode...\n"); 1231 #endif 1232 /* don't use the linear frame buffer for text modes. XXX */ 1233 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1234 info.vi_flags &= ~V_INFO_LINEAR; 1235 1236 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1237 return (1); 1238 1239 /* Palette format is reset by the above VBE function call. */ 1240 adp->va_flags &= ~V_ADP_DAC8; 1241 1242 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1243 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1244 (info.vi_flags & V_INFO_NONVGA) != 0 && 1245 vesa_bios_set_dac(8) > 6) 1246 adp->va_flags |= V_ADP_DAC8; 1247 1248 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1249 pmap_unmapdev(adp->va_buffer, adp->va_buffer_size); 1250 1251 #if VESA_DEBUG > 0 1252 printf("VESA: mode set!\n"); 1253 #endif 1254 vesa_adp->va_mode = mode; 1255 vesa_adp->va_flags &= ~V_ADP_COLOR; 1256 vesa_adp->va_flags |= 1257 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1258 vesa_adp->va_crtc_addr = 1259 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1260 if (info.vi_flags & V_INFO_LINEAR) { 1261 #if VESA_DEBUG > 1 1262 printf("VESA: setting up LFB\n"); 1263 #endif 1264 vesa_adp->va_buffer = 1265 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1266 info.vi_buffer_size, PAT_WRITE_COMBINING); 1267 vesa_adp->va_window = vesa_adp->va_buffer; 1268 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1269 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1270 } else { 1271 vesa_adp->va_buffer = 0; 1272 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1273 vesa_adp->va_window_size = info.vi_window_size; 1274 vesa_adp->va_window_gran = info.vi_window_gran; 1275 } 1276 vesa_adp->va_buffer_size = info.vi_buffer_size; 1277 vesa_adp->va_window_orig = 0; 1278 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1279 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1280 vesa_adp->va_line_width /= info.vi_planes; 1281 vesa_adp->va_disp_start.x = 0; 1282 vesa_adp->va_disp_start.y = 0; 1283 #if VESA_DEBUG > 0 1284 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1285 info.vi_width, vesa_adp->va_line_width); 1286 #endif 1287 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1288 1289 /* move hardware cursor out of the way */ 1290 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1291 1292 return (0); 1293 } 1294 1295 static int 1296 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1297 u_char *data, int ch, int count) 1298 { 1299 1300 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1301 ch, count)); 1302 } 1303 1304 static int 1305 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1306 u_char *data, int ch, int count) 1307 { 1308 1309 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1310 ch, count)); 1311 } 1312 1313 static int 1314 vesa_show_font(video_adapter_t *adp, int page) 1315 { 1316 1317 return ((*prevvidsw->show_font)(adp, page)); 1318 } 1319 1320 static int 1321 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1322 { 1323 int bits; 1324 1325 if (adp == vesa_adp && VESA_MODE(adp->va_mode) && 1326 (adp->va_info.vi_flags & V_INFO_NONVGA) != 0) { 1327 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1328 return (vesa_bios_save_palette(0, 256, palette, bits)); 1329 } 1330 1331 return ((*prevvidsw->save_palette)(adp, palette)); 1332 } 1333 1334 static int 1335 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1336 { 1337 int bits; 1338 1339 if (adp == vesa_adp && VESA_MODE(adp->va_mode) && 1340 (adp->va_info.vi_flags & V_INFO_NONVGA) != 0) { 1341 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1342 return (vesa_bios_load_palette(0, 256, palette, bits)); 1343 } 1344 1345 return ((*prevvidsw->load_palette)(adp, palette)); 1346 } 1347 1348 static int 1349 vesa_set_border(video_adapter_t *adp, int color) 1350 { 1351 1352 return ((*prevvidsw->set_border)(adp, color)); 1353 } 1354 1355 static int 1356 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1357 { 1358 1359 if (adp != vesa_adp) 1360 return ((*prevvidsw->save_state)(adp, p, size)); 1361 1362 if (vesa_state_buf_size == -1) { 1363 vesa_state_buf_size = vesa_bios_state_buf_size(); 1364 if (vesa_state_buf_size == 0) 1365 return (1); 1366 } 1367 if (size == 0) 1368 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1369 else if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1370 return (1); 1371 1372 ((adp_state_t *)p)->sig = V_STATE_SIG; 1373 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1374 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1375 vesa_state_buf_size)); 1376 } 1377 1378 static int 1379 vesa_load_state(video_adapter_t *adp, void *p) 1380 { 1381 1382 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1383 return ((*prevvidsw->load_state)(adp, p)); 1384 1385 if (vesa_state_buf_size <= 0) 1386 return (1); 1387 1388 /* Try BIOS POST to restore a sane state. */ 1389 (void)vesa_bios_post(); 1390 (void)int10_set_mode(adp->va_initial_bios_mode); 1391 1392 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1393 vesa_state_buf_size)); 1394 } 1395 1396 #if 0 1397 static int 1398 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1399 { 1400 x86regs_t regs; 1401 1402 x86bios_init_regs(®s); 1403 regs.R_AX = 0x4f05; 1404 regs.R_BL = 0x10; 1405 1406 x86bios_intr(®s, 0x10); 1407 1408 if (regs.R_AX != 0x004f) 1409 return (1); 1410 *offset = regs.DX * adp->va_window_gran; 1411 1412 return (0); 1413 } 1414 #endif 1415 1416 static int 1417 vesa_set_origin(video_adapter_t *adp, off_t offset) 1418 { 1419 x86regs_t regs; 1420 1421 /* 1422 * This function should return as quickly as possible to 1423 * maintain good performance of the system. For this reason, 1424 * error checking is kept minimal and let the VESA BIOS to 1425 * detect error. 1426 */ 1427 if (adp != vesa_adp) 1428 return ((*prevvidsw->set_win_org)(adp, offset)); 1429 1430 /* if this is a linear frame buffer, do nothing */ 1431 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1432 return (0); 1433 /* XXX */ 1434 if (adp->va_window_gran == 0) 1435 return (1); 1436 1437 x86bios_init_regs(®s); 1438 regs.R_AX = 0x4f05; 1439 regs.R_DX = offset / adp->va_window_gran; 1440 1441 x86bios_intr(®s, 0x10); 1442 1443 if (regs.R_AX != 0x004f) 1444 return (1); 1445 1446 x86bios_init_regs(®s); 1447 regs.R_AX = 0x4f05; 1448 regs.R_BL = 1; 1449 regs.R_DX = offset / adp->va_window_gran; 1450 x86bios_intr(®s, 0x10); 1451 1452 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1453 return (0); /* XXX */ 1454 } 1455 1456 static int 1457 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1458 { 1459 1460 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1461 } 1462 1463 static int 1464 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1465 { 1466 1467 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1468 } 1469 1470 static int 1471 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1472 int celsize, int blink) 1473 { 1474 1475 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1476 blink)); 1477 } 1478 1479 static int 1480 vesa_blank_display(video_adapter_t *adp, int mode) 1481 { 1482 1483 /* XXX: use VESA DPMS */ 1484 return ((*prevvidsw->blank_display)(adp, mode)); 1485 } 1486 1487 static int 1488 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1489 int prot) 1490 { 1491 1492 #if VESA_DEBUG > 0 1493 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%tx\n", 1494 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1495 #endif 1496 1497 if ((adp == vesa_adp) && 1498 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1499 /* va_window_size == va_buffer_size/vi_planes */ 1500 /* XXX: is this correct? */ 1501 if (offset > adp->va_window_size - PAGE_SIZE) 1502 return (-1); 1503 *paddr = adp->va_info.vi_buffer + offset; 1504 return (0); 1505 } 1506 return ((*prevvidsw->mmap)(adp, offset, paddr, prot)); 1507 } 1508 1509 static int 1510 vesa_clear(video_adapter_t *adp) 1511 { 1512 1513 return ((*prevvidsw->clear)(adp)); 1514 } 1515 1516 static int 1517 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1518 { 1519 1520 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1521 } 1522 1523 static int 1524 vesa_bitblt(video_adapter_t *adp,...) 1525 { 1526 1527 /* FIXME */ 1528 return (1); 1529 } 1530 1531 static int 1532 get_palette(video_adapter_t *adp, int base, int count, 1533 u_char *red, u_char *green, u_char *blue, u_char *trans) 1534 { 1535 u_char *r; 1536 u_char *g; 1537 u_char *b; 1538 int bits; 1539 int error; 1540 1541 if (base < 0 || base >= 256 || count < 0 || count > 256) 1542 return (1); 1543 if ((base + count) > 256) 1544 return (1); 1545 if (!VESA_MODE(adp->va_mode)) 1546 return (1); 1547 if ((adp->va_info.vi_flags & V_INFO_NONVGA) == 0) 1548 return (1); 1549 1550 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1551 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1552 g = r + count; 1553 b = g + count; 1554 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1555 if (error == 0) { 1556 copyout(r, red, count); 1557 copyout(g, green, count); 1558 copyout(b, blue, count); 1559 if (trans != NULL) { 1560 bzero(r, count); 1561 copyout(r, trans, count); 1562 } 1563 } 1564 free(r, M_DEVBUF); 1565 1566 return (error); 1567 } 1568 1569 static int 1570 set_palette(video_adapter_t *adp, int base, int count, 1571 u_char *red, u_char *green, u_char *blue, u_char *trans) 1572 { 1573 u_char *r; 1574 u_char *g; 1575 u_char *b; 1576 int bits; 1577 int error; 1578 1579 if (base < 0 || base >= 256 || count < 0 || count > 256) 1580 return (1); 1581 if ((base + count) > 256) 1582 return (1); 1583 if (!VESA_MODE(adp->va_mode)) 1584 return (1); 1585 if ((adp->va_info.vi_flags & V_INFO_NONVGA) == 0) 1586 return (1); 1587 1588 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1589 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1590 g = r + count; 1591 b = g + count; 1592 copyin(red, r, count); 1593 copyin(green, g, count); 1594 copyin(blue, b, count); 1595 1596 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1597 free(r, M_DEVBUF); 1598 1599 return (error); 1600 } 1601 1602 static int 1603 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1604 { 1605 int bytes; 1606 1607 if (adp != vesa_adp) 1608 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1609 1610 switch (cmd) { 1611 case FBIO_SETWINORG: /* set frame buffer window origin */ 1612 if (!VESA_MODE(adp->va_mode)) 1613 return (*prevvidsw->ioctl)(adp, cmd, arg); 1614 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1615 1616 case FBIO_SETDISPSTART: /* set display start address */ 1617 if (!VESA_MODE(adp->va_mode)) 1618 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1619 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1620 ((video_display_start_t *)arg)->y)) 1621 return (ENODEV); 1622 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1623 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1624 return (0); 1625 1626 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1627 if (!VESA_MODE(adp->va_mode)) 1628 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1629 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1630 return (ENODEV); 1631 adp->va_line_width = bytes; 1632 #if VESA_DEBUG > 1 1633 printf("new line width:%d\n", adp->va_line_width); 1634 #endif 1635 return (0); 1636 1637 case FBIO_GETPALETTE: /* get color palette */ 1638 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1639 ((video_color_palette_t *)arg)->count, 1640 ((video_color_palette_t *)arg)->red, 1641 ((video_color_palette_t *)arg)->green, 1642 ((video_color_palette_t *)arg)->blue, 1643 ((video_color_palette_t *)arg)->transparent)) 1644 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1645 return (0); 1646 1647 1648 case FBIO_SETPALETTE: /* set color palette */ 1649 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1650 ((video_color_palette_t *)arg)->count, 1651 ((video_color_palette_t *)arg)->red, 1652 ((video_color_palette_t *)arg)->green, 1653 ((video_color_palette_t *)arg)->blue, 1654 ((video_color_palette_t *)arg)->transparent)) 1655 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1656 return (0); 1657 1658 case FBIOGETCMAP: /* get color palette */ 1659 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1660 ((struct fbcmap *)arg)->count, 1661 ((struct fbcmap *)arg)->red, 1662 ((struct fbcmap *)arg)->green, 1663 ((struct fbcmap *)arg)->blue, NULL)) 1664 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1665 return (0); 1666 1667 case FBIOPUTCMAP: /* set color palette */ 1668 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1669 ((struct fbcmap *)arg)->count, 1670 ((struct fbcmap *)arg)->red, 1671 ((struct fbcmap *)arg)->green, 1672 ((struct fbcmap *)arg)->blue, NULL)) 1673 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1674 return (0); 1675 1676 default: 1677 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1678 } 1679 } 1680 1681 static int 1682 vesa_diag(video_adapter_t *adp, int level) 1683 { 1684 int error; 1685 1686 /* call the previous handler first */ 1687 error = (*prevvidsw->diag)(adp, level); 1688 if (error) 1689 return (error); 1690 1691 if (adp != vesa_adp) 1692 return (1); 1693 1694 if (level <= 0) 1695 return (0); 1696 1697 return (0); 1698 } 1699 1700 static int 1701 vesa_bios_info(int level) 1702 { 1703 #if VESA_DEBUG > 1 1704 struct vesa_mode vmode; 1705 int i; 1706 #endif 1707 uint16_t vers; 1708 1709 vers = vesa_adp_info->v_version; 1710 1711 if (bootverbose) { 1712 /* general adapter information */ 1713 printf( 1714 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1715 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1716 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1717 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1718 vesa_vmodetab, vesa_adp_info->v_modetable); 1719 1720 /* OEM string */ 1721 if (vesa_oemstr != NULL) 1722 printf("VESA: %s\n", vesa_oemstr); 1723 } 1724 1725 if (level <= 0) 1726 return (0); 1727 1728 if (vers >= 0x0200 && bootverbose) { 1729 /* vender name, product name, product revision */ 1730 printf("VESA: %s %s %s\n", 1731 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1732 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1733 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1734 } 1735 1736 #if VESA_DEBUG > 1 1737 /* mode information */ 1738 for (i = 0; 1739 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1740 && (vesa_vmodetab[i] != 0xffff); ++i) { 1741 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1742 continue; 1743 1744 /* print something for diagnostic purpose */ 1745 printf("VESA: mode:0x%03x, flags:0x%04x", 1746 vesa_vmodetab[i], vmode.v_modeattr); 1747 if (vmode.v_modeattr & V_MODEOPTINFO) { 1748 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1749 printf(", G %dx%dx%d %d, ", 1750 vmode.v_width, vmode.v_height, 1751 vmode.v_bpp, vmode.v_planes); 1752 } else { 1753 printf(", T %dx%d, ", 1754 vmode.v_width, vmode.v_height); 1755 } 1756 printf("font:%dx%d, ", 1757 vmode.v_cwidth, vmode.v_cheight); 1758 printf("pages:%d, mem:%d", 1759 vmode.v_ipages + 1, vmode.v_memmodel); 1760 } 1761 if (vmode.v_modeattr & V_MODELFB) { 1762 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1763 vmode.v_lfb, vmode.v_offscreen, 1764 vmode.v_offscreensize*1024); 1765 } 1766 printf("\n"); 1767 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1768 vmode.v_waseg, vmode.v_waattr, 1769 vmode.v_wbseg, vmode.v_wbattr); 1770 printf("size:%dk, gran:%dk\n", 1771 vmode.v_wsize, vmode.v_wgran); 1772 } 1773 #endif /* VESA_DEBUG > 1 */ 1774 1775 return (0); 1776 } 1777 1778 /* module loading */ 1779 1780 static int 1781 vesa_load(void) 1782 { 1783 int error; 1784 int s; 1785 1786 if (vesa_init_done) 1787 return (0); 1788 1789 /* locate a VGA adapter */ 1790 s = spltty(); 1791 vesa_adp = NULL; 1792 error = vesa_configure(0); 1793 splx(s); 1794 1795 if (error == 0) 1796 vesa_bios_info(bootverbose); 1797 1798 return (error); 1799 } 1800 1801 static int 1802 vesa_unload(void) 1803 { 1804 u_char palette[256*3]; 1805 int error; 1806 int s; 1807 1808 /* if the adapter is currently in a VESA mode, don't unload */ 1809 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1810 return (EBUSY); 1811 /* 1812 * FIXME: if there is at least one vty which is in a VESA mode, 1813 * we shouldn't be unloading! XXX 1814 */ 1815 1816 s = spltty(); 1817 if ((error = vesa_unload_ioctl()) == 0) { 1818 if (vesa_adp != NULL) { 1819 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1820 vesa_bios_save_palette(0, 256, palette, 8); 1821 vesa_bios_set_dac(6); 1822 vesa_adp->va_flags &= ~V_ADP_DAC8; 1823 vesa_bios_load_palette(0, 256, palette, 6); 1824 } 1825 vesa_adp->va_flags &= ~V_ADP_VESA; 1826 vidsw[vesa_adp->va_index] = prevvidsw; 1827 } 1828 } 1829 splx(s); 1830 1831 if (vesa_oemstr != NULL) 1832 free(vesa_oemstr, M_DEVBUF); 1833 if (vesa_venderstr != NULL) 1834 free(vesa_venderstr, M_DEVBUF); 1835 if (vesa_prodstr != NULL) 1836 free(vesa_prodstr, M_DEVBUF); 1837 if (vesa_revstr != NULL) 1838 free(vesa_revstr, M_DEVBUF); 1839 if (vesa_vmode != &vesa_vmode_empty) 1840 free(vesa_vmode, M_DEVBUF); 1841 return (error); 1842 } 1843 1844 static int 1845 vesa_mod_event(module_t mod, int type, void *data) 1846 { 1847 1848 switch (type) { 1849 case MOD_LOAD: 1850 return (vesa_load()); 1851 case MOD_UNLOAD: 1852 return (vesa_unload()); 1853 } 1854 return (EOPNOTSUPP); 1855 } 1856 1857 static moduledata_t vesa_mod = { 1858 "vesa", 1859 vesa_mod_event, 1860 NULL, 1861 }; 1862 1863 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1864 MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1865 1866 #endif /* VGA_NO_MODE_CHANGE */ 1867