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) 2009-2012 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/lock.h> 41 #include <sys/module.h> 42 #include <sys/malloc.h> 43 #include <sys/mutex.h> 44 #include <sys/fbio.h> 45 #include <sys/sysctl.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_extern.h> 49 #include <vm/vm_kern.h> 50 #include <vm/vm_param.h> 51 #include <vm/pmap.h> 52 53 #include <machine/pc/bios.h> 54 #include <dev/fb/vesa.h> 55 56 #include <dev/fb/fbreg.h> 57 #include <dev/fb/vgareg.h> 58 59 #include <dev/pci/pcivar.h> 60 61 #include <isa/isareg.h> 62 63 #include <compat/x86bios/x86bios.h> 64 65 #define VESA_BIOS_OFFSET 0xc0000 66 #define VESA_PALETTE_SIZE (256 * 4) 67 #define VESA_VIA_CLE266 "VIA CLE266\r\n" 68 69 #ifndef VESA_DEBUG 70 #define VESA_DEBUG 0 71 #endif 72 73 /* VESA video adapter state buffer stub */ 74 struct adp_state { 75 int sig; 76 #define V_STATE_SIG 0x61736576 77 u_char regs[1]; 78 }; 79 typedef struct adp_state adp_state_t; 80 81 static struct mtx vesa_lock; 82 MTX_SYSINIT(vesa_lock, &vesa_lock, "VESA lock", MTX_DEF); 83 84 static int vesa_state; 85 static void *vesa_state_buf; 86 static uint32_t vesa_state_buf_offs; 87 static ssize_t vesa_state_buf_size; 88 89 static u_char *vesa_palette; 90 static uint32_t vesa_palette_offs; 91 92 static void *vesa_vmem_buf; 93 static size_t vesa_vmem_max; 94 95 static void *vesa_bios; 96 static uint32_t vesa_bios_offs; 97 static uint32_t vesa_bios_int10; 98 static size_t vesa_bios_size; 99 100 /* VESA video adapter */ 101 static video_adapter_t *vesa_adp; 102 103 static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging"); 104 static int vesa_shadow_rom; 105 TUNABLE_INT("debug.vesa.shadow_rom", &vesa_shadow_rom); 106 SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom, 107 0, "Enable video BIOS shadow"); 108 109 /* VESA functions */ 110 #if 0 111 static int vesa_nop(void); 112 #endif 113 static int vesa_error(void); 114 static vi_probe_t vesa_probe; 115 static vi_init_t vesa_init; 116 static vi_get_info_t vesa_get_info; 117 static vi_query_mode_t vesa_query_mode; 118 static vi_set_mode_t vesa_set_mode; 119 static vi_save_font_t vesa_save_font; 120 static vi_load_font_t vesa_load_font; 121 static vi_show_font_t vesa_show_font; 122 static vi_save_palette_t vesa_save_palette; 123 static vi_load_palette_t vesa_load_palette; 124 static vi_set_border_t vesa_set_border; 125 static vi_save_state_t vesa_save_state; 126 static vi_load_state_t vesa_load_state; 127 static vi_set_win_org_t vesa_set_origin; 128 static vi_read_hw_cursor_t vesa_read_hw_cursor; 129 static vi_set_hw_cursor_t vesa_set_hw_cursor; 130 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 131 static vi_blank_display_t vesa_blank_display; 132 static vi_mmap_t vesa_mmap; 133 static vi_ioctl_t vesa_ioctl; 134 static vi_clear_t vesa_clear; 135 static vi_fill_rect_t vesa_fill_rect; 136 static vi_bitblt_t vesa_bitblt; 137 static vi_diag_t vesa_diag; 138 static int vesa_bios_info(int level); 139 140 static video_switch_t vesavidsw = { 141 vesa_probe, 142 vesa_init, 143 vesa_get_info, 144 vesa_query_mode, 145 vesa_set_mode, 146 vesa_save_font, 147 vesa_load_font, 148 vesa_show_font, 149 vesa_save_palette, 150 vesa_load_palette, 151 vesa_set_border, 152 vesa_save_state, 153 vesa_load_state, 154 vesa_set_origin, 155 vesa_read_hw_cursor, 156 vesa_set_hw_cursor, 157 vesa_set_hw_cursor_shape, 158 vesa_blank_display, 159 vesa_mmap, 160 vesa_ioctl, 161 vesa_clear, 162 vesa_fill_rect, 163 vesa_bitblt, 164 vesa_error, 165 vesa_error, 166 vesa_diag, 167 }; 168 169 static video_switch_t *prevvidsw; 170 171 /* VESA BIOS video modes */ 172 #define VESA_MAXMODES 64 173 #define EOT (-1) 174 #define NA (-2) 175 176 #define MODE_TABLE_DELTA 8 177 178 static int vesa_vmode_max; 179 static video_info_t *vesa_vmode; 180 181 static int vesa_init_done; 182 static struct vesa_info *vesa_adp_info; 183 static u_int16_t *vesa_vmodetab; 184 static char *vesa_oemstr; 185 static char *vesa_venderstr; 186 static char *vesa_prodstr; 187 static char *vesa_revstr; 188 189 /* local macros and functions */ 190 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 191 192 static int int10_set_mode(int mode); 193 static int vesa_bios_post(void); 194 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags); 195 static int vesa_bios_set_mode(int mode); 196 #if 0 197 static int vesa_bios_get_dac(void); 198 #endif 199 static int vesa_bios_set_dac(int bits); 200 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 201 int bits); 202 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 203 u_char *b, int bits); 204 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 205 int bits); 206 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 207 u_char *b, int bits); 208 #define STATE_SIZE 0 209 #define STATE_SAVE 1 210 #define STATE_LOAD 2 211 static ssize_t vesa_bios_state_buf_size(int); 212 static int vesa_bios_save_restore(int code, void *p); 213 #ifdef MODE_TABLE_BROKEN 214 static int vesa_bios_get_line_length(void); 215 #endif 216 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 217 #if 0 218 static int vesa_bios_get_start(int *x, int *y); 219 #endif 220 static int vesa_bios_set_start(int x, int y); 221 static int vesa_map_gen_mode_num(int type, int color, int mode); 222 static int vesa_translate_flags(u_int16_t vflags); 223 static int vesa_translate_mmodel(u_int8_t vmodel); 224 static int vesa_get_bpscanline(struct vesa_mode *vmode); 225 static int vesa_bios_init(void); 226 static void vesa_bios_uninit(void); 227 static void vesa_clear_modes(video_info_t *info, int color); 228 229 #if 0 230 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 231 #endif 232 233 /* INT 10 BIOS calls */ 234 static int 235 int10_set_mode(int mode) 236 { 237 x86regs_t regs; 238 239 x86bios_init_regs(®s); 240 regs.R_AL = mode; 241 242 x86bios_intr(®s, 0x10); 243 244 return (0); 245 } 246 247 static int 248 vesa_bios_post(void) 249 { 250 x86regs_t regs; 251 devclass_t dc; 252 device_t *devs; 253 device_t dev; 254 int count, i, is_pci; 255 256 if (x86bios_get_orm(vesa_bios_offs) == NULL) 257 return (1); 258 259 dev = NULL; 260 is_pci = 0; 261 262 /* Find the matching PCI video controller. */ 263 dc = devclass_find("vgapci"); 264 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) { 265 for (i = 0; i < count; i++) 266 if (device_get_flags(devs[i]) != 0 && 267 x86bios_match_device(vesa_bios_offs, devs[i])) { 268 dev = devs[i]; 269 is_pci = 1; 270 break; 271 } 272 free(devs, M_TEMP); 273 } 274 275 /* Try VGA if a PCI device is not found. */ 276 if (dev == NULL) { 277 dc = devclass_find(VGA_DRIVER_NAME); 278 if (dc != NULL) 279 dev = devclass_get_device(dc, 0); 280 } 281 282 if (bootverbose) 283 printf("%s: calling BIOS POST\n", 284 dev == NULL ? "VESA" : device_get_nameunit(dev)); 285 286 x86bios_init_regs(®s); 287 if (is_pci) { 288 regs.R_AH = pci_get_bus(dev); 289 regs.R_AL = (pci_get_slot(dev) << 3) | 290 (pci_get_function(dev) & 0x07); 291 } 292 regs.R_DL = 0x80; 293 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3), 294 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3)); 295 296 if (x86bios_get_intr(0x10) == 0) 297 return (1); 298 299 return (0); 300 } 301 302 /* VESA BIOS calls */ 303 static int 304 vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags) 305 { 306 x86regs_t regs; 307 uint32_t offs; 308 void *buf; 309 310 buf = x86bios_alloc(&offs, sizeof(*vmode), flags); 311 if (buf == NULL) 312 return (1); 313 314 x86bios_init_regs(®s); 315 regs.R_AX = 0x4f01; 316 regs.R_CX = mode; 317 318 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 319 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 320 321 x86bios_intr(®s, 0x10); 322 323 if (regs.R_AX != 0x004f) { 324 x86bios_free(buf, sizeof(*vmode)); 325 return (1); 326 } 327 328 bcopy(buf, vmode, sizeof(*vmode)); 329 x86bios_free(buf, sizeof(*vmode)); 330 331 return (0); 332 } 333 334 static int 335 vesa_bios_set_mode(int mode) 336 { 337 x86regs_t regs; 338 339 x86bios_init_regs(®s); 340 regs.R_AX = 0x4f02; 341 regs.R_BX = mode; 342 343 x86bios_intr(®s, 0x10); 344 345 return (regs.R_AX != 0x004f); 346 } 347 348 #if 0 349 static int 350 vesa_bios_get_dac(void) 351 { 352 x86regs_t regs; 353 354 x86bios_init_regs(®s); 355 regs.R_AX = 0x4f08; 356 regs.R_BL = 1; 357 358 x86bios_intr(®s, 0x10); 359 360 if (regs.R_AX != 0x004f) 361 return (6); 362 363 return (regs.R_BH); 364 } 365 #endif 366 367 static int 368 vesa_bios_set_dac(int bits) 369 { 370 x86regs_t regs; 371 372 x86bios_init_regs(®s); 373 regs.R_AX = 0x4f08; 374 /* regs.R_BL = 0; */ 375 regs.R_BH = bits; 376 377 x86bios_intr(®s, 0x10); 378 379 if (regs.R_AX != 0x004f) 380 return (6); 381 382 return (regs.R_BH); 383 } 384 385 static int 386 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 387 { 388 x86regs_t regs; 389 int i; 390 391 x86bios_init_regs(®s); 392 regs.R_AX = 0x4f09; 393 regs.R_BL = 1; 394 regs.R_CX = colors; 395 regs.R_DX = start; 396 397 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 398 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 399 400 bits = 8 - bits; 401 mtx_lock(&vesa_lock); 402 x86bios_intr(®s, 0x10); 403 if (regs.R_AX != 0x004f) { 404 mtx_unlock(&vesa_lock); 405 return (1); 406 } 407 for (i = 0; i < colors; ++i) { 408 palette[i * 3] = vesa_palette[i * 4 + 2] << bits; 409 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits; 410 palette[i * 3 + 2] = vesa_palette[i * 4] << bits; 411 } 412 mtx_unlock(&vesa_lock); 413 414 return (0); 415 } 416 417 static int 418 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 419 int bits) 420 { 421 x86regs_t regs; 422 int i; 423 424 x86bios_init_regs(®s); 425 regs.R_AX = 0x4f09; 426 regs.R_BL = 1; 427 regs.R_CX = colors; 428 regs.R_DX = start; 429 430 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 431 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 432 433 bits = 8 - bits; 434 mtx_lock(&vesa_lock); 435 x86bios_intr(®s, 0x10); 436 if (regs.R_AX != 0x004f) { 437 mtx_unlock(&vesa_lock); 438 return (1); 439 } 440 for (i = 0; i < colors; ++i) { 441 r[i] = vesa_palette[i * 4 + 2] << bits; 442 g[i] = vesa_palette[i * 4 + 1] << bits; 443 b[i] = vesa_palette[i * 4] << bits; 444 } 445 mtx_unlock(&vesa_lock); 446 447 return (0); 448 } 449 450 static int 451 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 452 { 453 x86regs_t regs; 454 int i; 455 456 x86bios_init_regs(®s); 457 regs.R_AX = 0x4f09; 458 /* regs.R_BL = 0; */ 459 regs.R_CX = colors; 460 regs.R_DX = start; 461 462 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs); 463 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 464 465 bits = 8 - bits; 466 mtx_lock(&vesa_lock); 467 for (i = 0; i < colors; ++i) { 468 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits; 469 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits; 470 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits; 471 vesa_palette[i * 4 + 3] = 0; 472 } 473 x86bios_intr(®s, 0x10); 474 mtx_unlock(&vesa_lock); 475 476 return (regs.R_AX != 0x004f); 477 } 478 479 static int 480 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 481 int bits) 482 { 483 x86regs_t regs; 484 int i; 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(vesa_palette_offs); 493 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs); 494 495 bits = 8 - bits; 496 mtx_lock(&vesa_lock); 497 for (i = 0; i < colors; ++i) { 498 vesa_palette[i * 4] = b[i] >> bits; 499 vesa_palette[i * 4 + 1] = g[i] >> bits; 500 vesa_palette[i * 4 + 2] = r[i] >> bits; 501 vesa_palette[i * 4 + 3] = 0; 502 } 503 x86bios_intr(®s, 0x10); 504 mtx_unlock(&vesa_lock); 505 506 return (regs.R_AX != 0x004f); 507 } 508 509 static ssize_t 510 vesa_bios_state_buf_size(int state) 511 { 512 x86regs_t regs; 513 514 x86bios_init_regs(®s); 515 regs.R_AX = 0x4f04; 516 /* regs.R_DL = STATE_SIZE; */ 517 regs.R_CX = state; 518 519 x86bios_intr(®s, 0x10); 520 521 if (regs.R_AX != 0x004f) 522 return (0); 523 524 return (regs.R_BX * 64); 525 } 526 527 static int 528 vesa_bios_save_restore(int code, void *p) 529 { 530 x86regs_t regs; 531 532 if (code != STATE_SAVE && code != STATE_LOAD) 533 return (1); 534 535 x86bios_init_regs(®s); 536 regs.R_AX = 0x4f04; 537 regs.R_DL = code; 538 regs.R_CX = vesa_state; 539 540 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); 541 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); 542 543 mtx_lock(&vesa_lock); 544 switch (code) { 545 case STATE_SAVE: 546 x86bios_intr(®s, 0x10); 547 bcopy(vesa_state_buf, p, vesa_state_buf_size); 548 break; 549 case STATE_LOAD: 550 bcopy(p, vesa_state_buf, vesa_state_buf_size); 551 x86bios_intr(®s, 0x10); 552 break; 553 } 554 mtx_unlock(&vesa_lock); 555 556 return (regs.R_AX != 0x004f); 557 } 558 559 #ifdef MODE_TABLE_BROKEN 560 static int 561 vesa_bios_get_line_length(void) 562 { 563 x86regs_t regs; 564 565 x86bios_init_regs(®s); 566 regs.R_AX = 0x4f06; 567 regs.R_BL = 1; 568 569 x86bios_intr(®s, 0x10); 570 571 if (regs.R_AX != 0x004f) 572 return (-1); 573 574 return (regs.R_BX); 575 } 576 #endif 577 578 static int 579 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 580 { 581 x86regs_t regs; 582 583 x86bios_init_regs(®s); 584 regs.R_AX = 0x4f06; 585 /* regs.R_BL = 0; */ 586 regs.R_CX = pixel; 587 588 x86bios_intr(®s, 0x10); 589 590 #if VESA_DEBUG > 1 591 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX); 592 #endif 593 if (regs.R_AX != 0x004f) 594 return (-1); 595 596 if (bytes != NULL) 597 *bytes = regs.R_BX; 598 if (lines != NULL) 599 *lines = regs.R_DX; 600 601 return (0); 602 } 603 604 #if 0 605 static int 606 vesa_bios_get_start(int *x, int *y) 607 { 608 x86regs_t regs; 609 610 x86bios_init_regs(®s); 611 regs.R_AX = 0x4f07; 612 regs.R_BL = 1; 613 614 x86bios_intr(®s, 0x10); 615 616 if (regs.R_AX != 0x004f) 617 return (-1); 618 619 *x = regs.R_CX; 620 *y = regs.R_DX; 621 622 return (0); 623 } 624 #endif 625 626 static int 627 vesa_bios_set_start(int x, int y) 628 { 629 x86regs_t regs; 630 631 x86bios_init_regs(®s); 632 regs.R_AX = 0x4f07; 633 regs.R_BL = 0x80; 634 regs.R_CX = x; 635 regs.R_DX = y; 636 637 x86bios_intr(®s, 0x10); 638 639 return (regs.R_AX != 0x004f); 640 } 641 642 /* map a generic video mode to a known mode */ 643 static int 644 vesa_map_gen_mode_num(int type, int color, int mode) 645 { 646 static struct { 647 int from; 648 int to; 649 } mode_map[] = { 650 { M_TEXT_132x25, M_VESA_C132x25 }, 651 { M_TEXT_132x43, M_VESA_C132x43 }, 652 { M_TEXT_132x50, M_VESA_C132x50 }, 653 { M_TEXT_132x60, M_VESA_C132x60 }, 654 }; 655 int i; 656 657 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 658 if (mode_map[i].from == mode) 659 return (mode_map[i].to); 660 } 661 return (mode); 662 } 663 664 static int 665 vesa_translate_flags(u_int16_t vflags) 666 { 667 static struct { 668 u_int16_t mask; 669 int set; 670 int reset; 671 } ftable[] = { 672 { V_MODECOLOR, V_INFO_COLOR, 0 }, 673 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 674 { V_MODELFB, V_INFO_LINEAR, 0 }, 675 { V_MODENONVGA, V_INFO_NONVGA, 0 }, 676 }; 677 int flags; 678 int i; 679 680 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 681 flags |= (vflags & ftable[i].mask) ? 682 ftable[i].set : ftable[i].reset; 683 } 684 return (flags); 685 } 686 687 static int 688 vesa_translate_mmodel(u_int8_t vmodel) 689 { 690 static struct { 691 u_int8_t vmodel; 692 int mmodel; 693 } mtable[] = { 694 { V_MMTEXT, V_INFO_MM_TEXT }, 695 { V_MMCGA, V_INFO_MM_CGA }, 696 { V_MMHGC, V_INFO_MM_HGC }, 697 { V_MMEGA, V_INFO_MM_PLANAR }, 698 { V_MMPACKED, V_INFO_MM_PACKED }, 699 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 700 }; 701 int i; 702 703 for (i = 0; mtable[i].mmodel >= 0; ++i) { 704 if (mtable[i].vmodel == vmodel) 705 return (mtable[i].mmodel); 706 } 707 return (V_INFO_MM_OTHER); 708 } 709 710 static int 711 vesa_get_bpscanline(struct vesa_mode *vmode) 712 { 713 int bpsl; 714 715 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) { 716 /* Find the minimum length. */ 717 switch (vmode->v_bpp / vmode->v_planes) { 718 case 1: 719 bpsl = vmode->v_width / 8; 720 break; 721 case 2: 722 bpsl = vmode->v_width / 4; 723 break; 724 case 4: 725 bpsl = vmode->v_width / 2; 726 break; 727 default: 728 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8); 729 bpsl /= vmode->v_planes; 730 break; 731 } 732 733 /* Use VBE 3.0 information if it looks sane. */ 734 if ((vmode->v_modeattr & V_MODELFB) != 0 && 735 vesa_adp_info->v_version >= 0x0300 && 736 vmode->v_linbpscanline > bpsl) 737 return (vmode->v_linbpscanline); 738 739 /* Return the minimum if the mode table looks absurd. */ 740 if (vmode->v_bpscanline < bpsl) 741 return (bpsl); 742 } 743 744 return (vmode->v_bpscanline); 745 } 746 747 #define VESA_MAXSTR 256 748 749 #define VESA_STRCPY(dst, src) do { \ 750 char *str; \ 751 int i; \ 752 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \ 753 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \ 754 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \ 755 dst[i] = str[i]; \ 756 dst[i] = '\0'; \ 757 } while (0) 758 759 static int 760 vesa_bios_init(void) 761 { 762 struct vesa_mode vmode; 763 struct vesa_info *buf; 764 video_info_t *p; 765 x86regs_t regs; 766 size_t bsize; 767 size_t msize; 768 void *vmbuf; 769 uint8_t *vbios; 770 uint32_t offs; 771 uint16_t vers; 772 int is_via_cle266; 773 int modes; 774 int i; 775 776 if (vesa_init_done) 777 return (0); 778 779 vesa_bios_offs = VESA_BIOS_OFFSET; 780 781 /* 782 * If the VBE real mode interrupt vector is not found, try BIOS POST. 783 */ 784 vesa_bios_int10 = x86bios_get_intr(0x10); 785 if (vesa_bios_int10 == 0) { 786 if (vesa_bios_post() != 0) 787 return (1); 788 vesa_bios_int10 = x86bios_get_intr(0x10); 789 if (vesa_bios_int10 == 0) 790 return (1); 791 } 792 793 /* 794 * Shadow video ROM. 795 */ 796 offs = vesa_bios_int10; 797 if (vesa_shadow_rom) { 798 vbios = x86bios_get_orm(vesa_bios_offs); 799 if (vbios != NULL) { 800 vesa_bios_size = vbios[2] * 512; 801 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) == 802 (vesa_bios_int10 & 0xffff0000) && 803 vesa_bios_size > (vesa_bios_int10 & 0xffff)) { 804 vesa_bios = x86bios_alloc(&vesa_bios_offs, 805 vesa_bios_size, M_WAITOK); 806 bcopy(vbios, vesa_bios, vesa_bios_size); 807 offs = ((vesa_bios_offs << 12) & 0xffff0000) + 808 (vesa_bios_int10 & 0xffff); 809 x86bios_set_intr(0x10, offs); 810 } 811 } 812 if (vesa_bios == NULL) 813 printf("VESA: failed to shadow video ROM\n"); 814 } 815 if (bootverbose) 816 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n", 817 (offs >> 16) & 0xffff, offs & 0xffff); 818 819 x86bios_init_regs(®s); 820 regs.R_AX = 0x4f00; 821 822 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK); 823 824 regs.R_ES = X86BIOS_PHYSTOSEG(offs); 825 regs.R_DI = X86BIOS_PHYSTOOFF(offs); 826 827 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 828 x86bios_intr(®s, 0x10); 829 830 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0) 831 goto fail; 832 833 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK); 834 bcopy(vmbuf, buf, sizeof(*buf)); 835 836 if (bootverbose) { 837 printf("VESA: information block\n"); 838 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS); 839 } 840 841 vers = buf->v_version = le16toh(buf->v_version); 842 buf->v_oemstr = le32toh(buf->v_oemstr); 843 buf->v_flags = le32toh(buf->v_flags); 844 buf->v_modetable = le32toh(buf->v_modetable); 845 buf->v_memsize = le16toh(buf->v_memsize); 846 buf->v_revision = le16toh(buf->v_revision); 847 buf->v_venderstr = le32toh(buf->v_venderstr); 848 buf->v_prodstr = le32toh(buf->v_prodstr); 849 buf->v_revstr = le32toh(buf->v_revstr); 850 851 if (vers < 0x0102) { 852 printf("VESA: VBE version %d.%d is not supported; " 853 "version 1.2 or later is required.\n", 854 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8), 855 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f)); 856 goto fail; 857 } 858 859 VESA_STRCPY(vesa_oemstr, buf->v_oemstr); 860 if (vers >= 0x0200) { 861 VESA_STRCPY(vesa_venderstr, buf->v_venderstr); 862 VESA_STRCPY(vesa_prodstr, buf->v_prodstr); 863 VESA_STRCPY(vesa_revstr, buf->v_revstr); 864 } 865 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266, 866 sizeof(VESA_VIA_CLE266)) == 0; 867 868 if (buf->v_modetable == 0) 869 goto fail; 870 871 msize = (size_t)buf->v_memsize * 64 * 1024; 872 873 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable)); 874 875 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) && 876 (vesa_vmodetab[i] != 0xffff); ++i) { 877 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]); 878 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK)) 879 continue; 880 881 vmode.v_modeattr = le16toh(vmode.v_modeattr); 882 vmode.v_wgran = le16toh(vmode.v_wgran); 883 vmode.v_wsize = le16toh(vmode.v_wsize); 884 vmode.v_waseg = le16toh(vmode.v_waseg); 885 vmode.v_wbseg = le16toh(vmode.v_wbseg); 886 vmode.v_posfunc = le32toh(vmode.v_posfunc); 887 vmode.v_bpscanline = le16toh(vmode.v_bpscanline); 888 vmode.v_width = le16toh(vmode.v_width); 889 vmode.v_height = le16toh(vmode.v_height); 890 vmode.v_lfb = le32toh(vmode.v_lfb); 891 vmode.v_offscreen = le32toh(vmode.v_offscreen); 892 vmode.v_offscreensize = le16toh(vmode.v_offscreensize); 893 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline); 894 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock); 895 896 /* reject unsupported modes */ 897 #if 0 898 if ((vmode.v_modeattr & 899 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) != 900 (V_MODESUPP | V_MODEOPTINFO)) 901 continue; 902 #else 903 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 904 #if VESA_DEBUG > 1 905 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 906 " attr = %x\n", 907 vmode.v_modeattr & V_MODEGRAPHICS ? 908 "graphics" : "text", 909 vmode.v_width, vmode.v_height, vmode.v_bpp, 910 vmode.v_modeattr); 911 #endif 912 continue; 913 } 914 #endif 915 916 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height; 917 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0) 918 bsize *= vmode.v_planes; 919 920 /* Does it have enough memory to support this mode? */ 921 if (msize < bsize) { 922 #if VESA_DEBUG > 1 923 printf("Rejecting VESA %s mode: %d x %d x %d bpp " 924 " attr = %x, not enough memory\n", 925 vmode.v_modeattr & V_MODEGRAPHICS ? 926 "graphics" : "text", 927 vmode.v_width, vmode.v_height, vmode.v_bpp, 928 vmode.v_modeattr); 929 #endif 930 continue; 931 } 932 if (bsize > vesa_vmem_max) 933 vesa_vmem_max = bsize; 934 935 /* expand the array if necessary */ 936 if (modes >= vesa_vmode_max) { 937 vesa_vmode_max += MODE_TABLE_DELTA; 938 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1), 939 M_DEVBUF, M_WAITOK); 940 #if VESA_DEBUG > 1 941 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 942 modes, vesa_vmode_max); 943 #endif 944 if (modes > 0) { 945 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 946 free(vesa_vmode, M_DEVBUF); 947 } 948 vesa_vmode = p; 949 } 950 951 #if VESA_DEBUG > 1 952 printf("Found VESA %s mode: %d x %d x %d bpp\n", 953 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 954 vmode.v_width, vmode.v_height, vmode.v_bpp); 955 #endif 956 if (is_via_cle266) { 957 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 958 vmode.v_width &= 0xff; 959 vmode.v_waseg = 0xb8000 >> 4; 960 } 961 } 962 963 /* copy some fields */ 964 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 965 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 966 vesa_vmode[modes].vi_width = vmode.v_width; 967 vesa_vmode[modes].vi_height = vmode.v_height; 968 vesa_vmode[modes].vi_depth = vmode.v_bpp; 969 vesa_vmode[modes].vi_planes = vmode.v_planes; 970 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 971 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 972 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4; 973 /* XXX window B */ 974 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024; 975 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024; 976 if (vmode.v_modeattr & V_MODELFB) 977 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 978 vesa_vmode[modes].vi_buffer_size = bsize; 979 vesa_vmode[modes].vi_mem_model = 980 vesa_translate_mmodel(vmode.v_memmodel); 981 switch (vesa_vmode[modes].vi_mem_model) { 982 case V_INFO_MM_DIRECT: 983 if ((vmode.v_modeattr & V_MODELFB) != 0 && 984 vers >= 0x0300) { 985 vesa_vmode[modes].vi_pixel_fields[0] = 986 vmode.v_linredfieldpos; 987 vesa_vmode[modes].vi_pixel_fields[1] = 988 vmode.v_lingreenfieldpos; 989 vesa_vmode[modes].vi_pixel_fields[2] = 990 vmode.v_linbluefieldpos; 991 vesa_vmode[modes].vi_pixel_fields[3] = 992 vmode.v_linresfieldpos; 993 vesa_vmode[modes].vi_pixel_fsizes[0] = 994 vmode.v_linredmasksize; 995 vesa_vmode[modes].vi_pixel_fsizes[1] = 996 vmode.v_lingreenmasksize; 997 vesa_vmode[modes].vi_pixel_fsizes[2] = 998 vmode.v_linbluemasksize; 999 vesa_vmode[modes].vi_pixel_fsizes[3] = 1000 vmode.v_linresmasksize; 1001 } else { 1002 vesa_vmode[modes].vi_pixel_fields[0] = 1003 vmode.v_redfieldpos; 1004 vesa_vmode[modes].vi_pixel_fields[1] = 1005 vmode.v_greenfieldpos; 1006 vesa_vmode[modes].vi_pixel_fields[2] = 1007 vmode.v_bluefieldpos; 1008 vesa_vmode[modes].vi_pixel_fields[3] = 1009 vmode.v_resfieldpos; 1010 vesa_vmode[modes].vi_pixel_fsizes[0] = 1011 vmode.v_redmasksize; 1012 vesa_vmode[modes].vi_pixel_fsizes[1] = 1013 vmode.v_greenmasksize; 1014 vesa_vmode[modes].vi_pixel_fsizes[2] = 1015 vmode.v_bluemasksize; 1016 vesa_vmode[modes].vi_pixel_fsizes[3] = 1017 vmode.v_resmasksize; 1018 } 1019 /* FALLTHROUGH */ 1020 case V_INFO_MM_PACKED: 1021 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8; 1022 break; 1023 } 1024 vesa_vmode[modes].vi_flags = 1025 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 1026 1027 ++modes; 1028 } 1029 vesa_vmode[modes].vi_mode = EOT; 1030 1031 if (bootverbose) 1032 printf("VESA: %d mode(s) found\n", modes); 1033 1034 if (modes == 0) 1035 goto fail; 1036 1037 x86bios_free(vmbuf, sizeof(*buf)); 1038 1039 /* Probe supported save/restore states. */ 1040 for (i = 0; i < 4; i++) 1041 if (vesa_bios_state_buf_size(1 << i) > 0) 1042 vesa_state |= 1 << i; 1043 if (vesa_state != 0) 1044 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); 1045 vesa_palette = x86bios_alloc(&vesa_palette_offs, 1046 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); 1047 if (vesa_state_buf_size > 0) { 1048 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE; 1049 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE; 1050 } 1051 1052 return (0); 1053 1054 fail: 1055 x86bios_free(vmbuf, sizeof(buf)); 1056 vesa_bios_uninit(); 1057 return (1); 1058 } 1059 1060 static void 1061 vesa_bios_uninit(void) 1062 { 1063 1064 if (vesa_bios != NULL) { 1065 x86bios_set_intr(0x10, vesa_bios_int10); 1066 vesa_bios_offs = VESA_BIOS_OFFSET; 1067 x86bios_free(vesa_bios, vesa_bios_size); 1068 vesa_bios = NULL; 1069 } 1070 if (vesa_adp_info != NULL) { 1071 free(vesa_adp_info, M_DEVBUF); 1072 vesa_adp_info = NULL; 1073 } 1074 if (vesa_oemstr != NULL) { 1075 free(vesa_oemstr, M_DEVBUF); 1076 vesa_oemstr = NULL; 1077 } 1078 if (vesa_venderstr != NULL) { 1079 free(vesa_venderstr, M_DEVBUF); 1080 vesa_venderstr = NULL; 1081 } 1082 if (vesa_prodstr != NULL) { 1083 free(vesa_prodstr, M_DEVBUF); 1084 vesa_prodstr = NULL; 1085 } 1086 if (vesa_revstr != NULL) { 1087 free(vesa_revstr, M_DEVBUF); 1088 vesa_revstr = NULL; 1089 } 1090 if (vesa_vmode != NULL) { 1091 free(vesa_vmode, M_DEVBUF); 1092 vesa_vmode = NULL; 1093 } 1094 if (vesa_palette != NULL) { 1095 x86bios_free(vesa_palette, 1096 VESA_PALETTE_SIZE + vesa_state_buf_size); 1097 vesa_palette = NULL; 1098 } 1099 } 1100 1101 static void 1102 vesa_clear_modes(video_info_t *info, int color) 1103 { 1104 while (info->vi_mode != EOT) { 1105 if ((info->vi_flags & V_INFO_COLOR) != color) 1106 info->vi_mode = NA; 1107 ++info; 1108 } 1109 } 1110 1111 /* entry points */ 1112 1113 static int 1114 vesa_configure(int flags) 1115 { 1116 video_adapter_t *adp; 1117 int adapters; 1118 int error; 1119 int i; 1120 1121 if (vesa_init_done) 1122 return (0); 1123 if (flags & VIO_PROBE_ONLY) 1124 return (0); 1125 1126 /* 1127 * If the VESA module has already been loaded, abort loading 1128 * the module this time. 1129 */ 1130 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 1131 if (adp->va_flags & V_ADP_VESA) 1132 return (ENXIO); 1133 if (adp->va_type == KD_VGA) 1134 break; 1135 } 1136 1137 /* 1138 * The VGA adapter is not found. This is because either 1139 * 1) the VGA driver has not been initialized, or 2) the VGA card 1140 * is not present. If 1) is the case, we shall defer 1141 * initialization for now and try again later. 1142 */ 1143 if (adp == NULL) { 1144 vga_sub_configure = vesa_configure; 1145 return (ENODEV); 1146 } 1147 1148 /* count number of registered adapters */ 1149 for (++i; vid_get_adapter(i) != NULL; ++i) 1150 ; 1151 adapters = i; 1152 1153 /* call VESA BIOS */ 1154 vesa_adp = adp; 1155 if (vesa_bios_init()) { 1156 vesa_adp = NULL; 1157 return (ENXIO); 1158 } 1159 vesa_adp->va_flags |= V_ADP_VESA; 1160 1161 /* remove conflicting modes if we have more than one adapter */ 1162 if (adapters > 1) { 1163 vesa_clear_modes(vesa_vmode, 1164 (vesa_adp->va_flags & V_ADP_COLOR) ? 1165 V_INFO_COLOR : 0); 1166 } 1167 1168 if ((error = vesa_load_ioctl()) == 0) { 1169 prevvidsw = vidsw[vesa_adp->va_index]; 1170 vidsw[vesa_adp->va_index] = &vesavidsw; 1171 vesa_init_done = TRUE; 1172 } else { 1173 vesa_adp = NULL; 1174 return (error); 1175 } 1176 1177 return (0); 1178 } 1179 1180 #if 0 1181 static int 1182 vesa_nop(void) 1183 { 1184 1185 return (0); 1186 } 1187 #endif 1188 1189 static int 1190 vesa_error(void) 1191 { 1192 1193 return (1); 1194 } 1195 1196 static int 1197 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1198 { 1199 1200 return ((*prevvidsw->probe)(unit, adpp, arg, flags)); 1201 } 1202 1203 static int 1204 vesa_init(int unit, video_adapter_t *adp, int flags) 1205 { 1206 1207 return ((*prevvidsw->init)(unit, adp, flags)); 1208 } 1209 1210 static int 1211 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1212 { 1213 int i; 1214 1215 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 1216 return (0); 1217 1218 if (adp != vesa_adp) 1219 return (1); 1220 1221 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 1222 vesa_adp->va_flags & V_ADP_COLOR, mode); 1223 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1224 if (vesa_vmode[i].vi_mode == NA) 1225 continue; 1226 if (vesa_vmode[i].vi_mode == mode) { 1227 *info = vesa_vmode[i]; 1228 return (0); 1229 } 1230 } 1231 return (1); 1232 } 1233 1234 static int 1235 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1236 { 1237 int i; 1238 1239 if ((*prevvidsw->query_mode)(adp, info) == 0) 1240 return (0); 1241 if (adp != vesa_adp) 1242 return (ENODEV); 1243 1244 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1245 if ((info->vi_width != 0) 1246 && (info->vi_width != vesa_vmode[i].vi_width)) 1247 continue; 1248 if ((info->vi_height != 0) 1249 && (info->vi_height != vesa_vmode[i].vi_height)) 1250 continue; 1251 if ((info->vi_cwidth != 0) 1252 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1253 continue; 1254 if ((info->vi_cheight != 0) 1255 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1256 continue; 1257 if ((info->vi_depth != 0) 1258 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1259 continue; 1260 if ((info->vi_planes != 0) 1261 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1262 continue; 1263 /* pixel format, memory model */ 1264 if ((info->vi_flags != 0) 1265 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1266 continue; 1267 *info = vesa_vmode[i]; 1268 return (0); 1269 } 1270 return (ENODEV); 1271 } 1272 1273 static int 1274 vesa_set_mode(video_adapter_t *adp, int mode) 1275 { 1276 video_info_t info; 1277 1278 if (adp != vesa_adp) 1279 return ((*prevvidsw->set_mode)(adp, mode)); 1280 1281 mode = vesa_map_gen_mode_num(adp->va_type, 1282 adp->va_flags & V_ADP_COLOR, mode); 1283 #if VESA_DEBUG > 0 1284 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1285 adp->va_mode, adp->va_mode, mode, mode); 1286 #endif 1287 /* 1288 * If the current mode is a VESA mode and the new mode is not, 1289 * restore the state of the adapter first by setting one of the 1290 * standard VGA mode, so that non-standard, extended SVGA registers 1291 * are set to the state compatible with the standard VGA modes. 1292 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1293 * the new mode correctly. 1294 */ 1295 if (VESA_MODE(adp->va_mode)) { 1296 if (!VESA_MODE(mode) && 1297 (*prevvidsw->get_info)(adp, mode, &info) == 0) { 1298 if ((adp->va_flags & V_ADP_DAC8) != 0) { 1299 vesa_bios_set_dac(6); 1300 adp->va_flags &= ~V_ADP_DAC8; 1301 } 1302 int10_set_mode(adp->va_initial_bios_mode); 1303 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1304 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1305 /* 1306 * Once (*prevvidsw->get_info)() succeeded, 1307 * (*prevvidsw->set_mode)() below won't fail... 1308 */ 1309 } 1310 } 1311 1312 /* we may not need to handle this mode after all... */ 1313 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0) 1314 return (0); 1315 1316 /* is the new mode supported? */ 1317 if (vesa_get_info(adp, mode, &info)) 1318 return (1); 1319 /* assert(VESA_MODE(mode)); */ 1320 1321 #if VESA_DEBUG > 0 1322 printf("VESA: about to set a VESA mode...\n"); 1323 #endif 1324 /* don't use the linear frame buffer for text modes. XXX */ 1325 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1326 info.vi_flags &= ~V_INFO_LINEAR; 1327 1328 if ((info.vi_flags & V_INFO_LINEAR) != 0) 1329 mode |= 0x4000; 1330 if (vesa_bios_set_mode(mode | 0x8000)) 1331 return (1); 1332 1333 /* Palette format is reset by the above VBE function call. */ 1334 adp->va_flags &= ~V_ADP_DAC8; 1335 1336 if ((vesa_adp_info->v_flags & V_DAC8) != 0 && 1337 (info.vi_flags & V_INFO_GRAPHICS) != 0 && 1338 vesa_bios_set_dac(8) > 6) 1339 adp->va_flags |= V_ADP_DAC8; 1340 1341 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1342 pmap_unmapdev(adp->va_buffer, vesa_vmem_max); 1343 1344 #if VESA_DEBUG > 0 1345 printf("VESA: mode set!\n"); 1346 #endif 1347 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */ 1348 vesa_adp->va_flags &= ~V_ADP_COLOR; 1349 vesa_adp->va_flags |= 1350 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1351 vesa_adp->va_crtc_addr = 1352 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1353 1354 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height; 1355 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1356 vesa_adp->va_line_width /= info.vi_planes; 1357 1358 #ifdef MODE_TABLE_BROKEN 1359 /* If VBE function returns bigger bytes per scan line, use it. */ 1360 { 1361 int bpsl = vesa_bios_get_line_length(); 1362 if (bpsl > vesa_adp->va_line_width) { 1363 vesa_adp->va_line_width = bpsl; 1364 info.vi_buffer_size = bpsl * info.vi_height; 1365 if ((info.vi_flags & V_INFO_GRAPHICS) != 0) 1366 info.vi_buffer_size *= info.vi_planes; 1367 } 1368 } 1369 #endif 1370 1371 if (info.vi_flags & V_INFO_LINEAR) { 1372 #if VESA_DEBUG > 1 1373 printf("VESA: setting up LFB\n"); 1374 #endif 1375 vesa_adp->va_buffer = 1376 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer, 1377 vesa_vmem_max, PAT_WRITE_COMBINING); 1378 vesa_adp->va_window = vesa_adp->va_buffer; 1379 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes; 1380 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes; 1381 } else { 1382 vesa_adp->va_buffer = 0; 1383 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window); 1384 vesa_adp->va_window_size = info.vi_window_size; 1385 vesa_adp->va_window_gran = info.vi_window_gran; 1386 } 1387 vesa_adp->va_buffer_size = info.vi_buffer_size; 1388 vesa_adp->va_window_orig = 0; 1389 vesa_adp->va_disp_start.x = 0; 1390 vesa_adp->va_disp_start.y = 0; 1391 #if VESA_DEBUG > 0 1392 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n", 1393 info.vi_width, vesa_adp->va_line_width); 1394 #endif 1395 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1396 1397 /* move hardware cursor out of the way */ 1398 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1399 1400 return (0); 1401 } 1402 1403 static int 1404 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1405 u_char *data, int ch, int count) 1406 { 1407 1408 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1409 ch, count)); 1410 } 1411 1412 static int 1413 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1414 u_char *data, int ch, int count) 1415 { 1416 1417 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1418 ch, count)); 1419 } 1420 1421 static int 1422 vesa_show_font(video_adapter_t *adp, int page) 1423 { 1424 1425 return ((*prevvidsw->show_font)(adp, page)); 1426 } 1427 1428 static int 1429 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1430 { 1431 int bits; 1432 1433 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1434 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1435 if (vesa_bios_save_palette(0, 256, palette, bits) == 0) 1436 return (0); 1437 } 1438 1439 return ((*prevvidsw->save_palette)(adp, palette)); 1440 } 1441 1442 static int 1443 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1444 { 1445 int bits; 1446 1447 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) { 1448 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1449 if (vesa_bios_load_palette(0, 256, palette, bits) == 0) 1450 return (0); 1451 } 1452 1453 return ((*prevvidsw->load_palette)(adp, palette)); 1454 } 1455 1456 static int 1457 vesa_set_border(video_adapter_t *adp, int color) 1458 { 1459 1460 return ((*prevvidsw->set_border)(adp, color)); 1461 } 1462 1463 static int 1464 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1465 { 1466 vm_offset_t buf; 1467 size_t bsize; 1468 1469 if (adp != vesa_adp || vesa_state_buf_size == 0) 1470 return ((*prevvidsw->save_state)(adp, p, size)); 1471 1472 if (size == 0) 1473 return (offsetof(adp_state_t, regs) + vesa_state_buf_size); 1474 if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) 1475 return (EINVAL); 1476 1477 buf = adp->va_buffer; 1478 if (buf != 0) { 1479 bsize = adp->va_buffer_size; 1480 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT); 1481 if (vesa_vmem_buf != NULL) 1482 bcopy((void *)buf, vesa_vmem_buf, bsize); 1483 } else 1484 vesa_vmem_buf = NULL; 1485 ((adp_state_t *)p)->sig = V_STATE_SIG; 1486 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1487 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs)); 1488 } 1489 1490 static int 1491 vesa_load_state(video_adapter_t *adp, void *p) 1492 { 1493 vm_offset_t buf; 1494 size_t bsize; 1495 int mode; 1496 1497 if (adp != vesa_adp) 1498 return ((*prevvidsw->load_state)(adp, p)); 1499 1500 /* Try BIOS POST to restore a sane state. */ 1501 (void)vesa_bios_post(); 1502 bsize = adp->va_buffer_size; 1503 mode = adp->va_mode; 1504 (void)vesa_set_mode(adp, adp->va_initial_mode); 1505 if (mode != adp->va_initial_mode) 1506 (void)vesa_set_mode(adp, mode); 1507 1508 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1509 return ((*prevvidsw->load_state)(adp, p)); 1510 if (vesa_vmem_buf != NULL) { 1511 buf = adp->va_buffer; 1512 if (buf != 0) 1513 bcopy(vesa_vmem_buf, (void *)buf, bsize); 1514 free(vesa_vmem_buf, M_DEVBUF); 1515 } 1516 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); 1517 } 1518 1519 #if 0 1520 static int 1521 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1522 { 1523 x86regs_t regs; 1524 1525 x86bios_init_regs(®s); 1526 regs.R_AX = 0x4f05; 1527 regs.R_BL = 0x10; 1528 1529 x86bios_intr(®s, 0x10); 1530 1531 if (regs.R_AX != 0x004f) 1532 return (1); 1533 *offset = regs.DX * adp->va_window_gran; 1534 1535 return (0); 1536 } 1537 #endif 1538 1539 static int 1540 vesa_set_origin(video_adapter_t *adp, off_t offset) 1541 { 1542 x86regs_t regs; 1543 1544 /* 1545 * This function should return as quickly as possible to 1546 * maintain good performance of the system. For this reason, 1547 * error checking is kept minimal and let the VESA BIOS to 1548 * detect error. 1549 */ 1550 if (adp != vesa_adp) 1551 return ((*prevvidsw->set_win_org)(adp, offset)); 1552 1553 /* if this is a linear frame buffer, do nothing */ 1554 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1555 return (0); 1556 /* XXX */ 1557 if (adp->va_window_gran == 0) 1558 return (1); 1559 1560 x86bios_init_regs(®s); 1561 regs.R_AX = 0x4f05; 1562 regs.R_DX = offset / adp->va_window_gran; 1563 1564 x86bios_intr(®s, 0x10); 1565 1566 if (regs.R_AX != 0x004f) 1567 return (1); 1568 1569 x86bios_init_regs(®s); 1570 regs.R_AX = 0x4f05; 1571 regs.R_BL = 1; 1572 regs.R_DX = offset / adp->va_window_gran; 1573 x86bios_intr(®s, 0x10); 1574 1575 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1576 return (0); /* XXX */ 1577 } 1578 1579 static int 1580 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1581 { 1582 1583 return ((*prevvidsw->read_hw_cursor)(adp, col, row)); 1584 } 1585 1586 static int 1587 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1588 { 1589 1590 return ((*prevvidsw->set_hw_cursor)(adp, col, row)); 1591 } 1592 1593 static int 1594 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1595 int celsize, int blink) 1596 { 1597 1598 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1599 blink)); 1600 } 1601 1602 static int 1603 vesa_blank_display(video_adapter_t *adp, int mode) 1604 { 1605 1606 /* XXX: use VESA DPMS */ 1607 return ((*prevvidsw->blank_display)(adp, mode)); 1608 } 1609 1610 static int 1611 vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 1612 int prot, vm_memattr_t *memattr) 1613 { 1614 1615 #if VESA_DEBUG > 0 1616 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n", 1617 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1618 #endif 1619 1620 if ((adp == vesa_adp) && 1621 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) { 1622 /* va_window_size == va_buffer_size/vi_planes */ 1623 /* XXX: is this correct? */ 1624 if (offset > adp->va_window_size - PAGE_SIZE) 1625 return (-1); 1626 *paddr = adp->va_info.vi_buffer + offset; 1627 return (0); 1628 } 1629 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr)); 1630 } 1631 1632 static int 1633 vesa_clear(video_adapter_t *adp) 1634 { 1635 1636 return ((*prevvidsw->clear)(adp)); 1637 } 1638 1639 static int 1640 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1641 { 1642 1643 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy)); 1644 } 1645 1646 static int 1647 vesa_bitblt(video_adapter_t *adp,...) 1648 { 1649 1650 /* FIXME */ 1651 return (1); 1652 } 1653 1654 static int 1655 get_palette(video_adapter_t *adp, int base, int count, 1656 u_char *red, u_char *green, u_char *blue, u_char *trans) 1657 { 1658 u_char *r; 1659 u_char *g; 1660 u_char *b; 1661 int bits; 1662 int error; 1663 1664 if (base < 0 || base >= 256 || count < 0 || count > 256) 1665 return (1); 1666 if ((base + count) > 256) 1667 return (1); 1668 if (!VESA_MODE(adp->va_mode)) 1669 return (1); 1670 1671 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1672 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1673 g = r + count; 1674 b = g + count; 1675 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1676 if (error == 0) { 1677 copyout(r, red, count); 1678 copyout(g, green, count); 1679 copyout(b, blue, count); 1680 if (trans != NULL) { 1681 bzero(r, count); 1682 copyout(r, trans, count); 1683 } 1684 } 1685 free(r, M_DEVBUF); 1686 1687 return (error); 1688 } 1689 1690 static int 1691 set_palette(video_adapter_t *adp, int base, int count, 1692 u_char *red, u_char *green, u_char *blue, u_char *trans) 1693 { 1694 u_char *r; 1695 u_char *g; 1696 u_char *b; 1697 int bits; 1698 int error; 1699 1700 if (base < 0 || base >= 256 || count < 0 || count > 256) 1701 return (1); 1702 if ((base + count) > 256) 1703 return (1); 1704 if (!VESA_MODE(adp->va_mode)) 1705 return (1); 1706 1707 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6; 1708 r = malloc(count * 3, M_DEVBUF, M_WAITOK); 1709 g = r + count; 1710 b = g + count; 1711 copyin(red, r, count); 1712 copyin(green, g, count); 1713 copyin(blue, b, count); 1714 1715 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1716 free(r, M_DEVBUF); 1717 1718 return (error); 1719 } 1720 1721 static int 1722 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1723 { 1724 int bytes; 1725 1726 if (adp != vesa_adp) 1727 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1728 1729 switch (cmd) { 1730 case FBIO_SETWINORG: /* set frame buffer window origin */ 1731 if (!VESA_MODE(adp->va_mode)) 1732 return (*prevvidsw->ioctl)(adp, cmd, arg); 1733 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1734 1735 case FBIO_SETDISPSTART: /* set display start address */ 1736 if (!VESA_MODE(adp->va_mode)) 1737 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1738 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1739 ((video_display_start_t *)arg)->y)) 1740 return (ENODEV); 1741 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1742 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1743 return (0); 1744 1745 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1746 if (!VESA_MODE(adp->va_mode)) 1747 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1748 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1749 return (ENODEV); 1750 adp->va_line_width = bytes; 1751 #if VESA_DEBUG > 1 1752 printf("new line width:%d\n", adp->va_line_width); 1753 #endif 1754 return (0); 1755 1756 case FBIO_GETPALETTE: /* get color palette */ 1757 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1758 ((video_color_palette_t *)arg)->count, 1759 ((video_color_palette_t *)arg)->red, 1760 ((video_color_palette_t *)arg)->green, 1761 ((video_color_palette_t *)arg)->blue, 1762 ((video_color_palette_t *)arg)->transparent)) 1763 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1764 return (0); 1765 1766 1767 case FBIO_SETPALETTE: /* set color palette */ 1768 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1769 ((video_color_palette_t *)arg)->count, 1770 ((video_color_palette_t *)arg)->red, 1771 ((video_color_palette_t *)arg)->green, 1772 ((video_color_palette_t *)arg)->blue, 1773 ((video_color_palette_t *)arg)->transparent)) 1774 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1775 return (0); 1776 1777 case FBIOGETCMAP: /* get color palette */ 1778 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1779 ((struct fbcmap *)arg)->count, 1780 ((struct fbcmap *)arg)->red, 1781 ((struct fbcmap *)arg)->green, 1782 ((struct fbcmap *)arg)->blue, NULL)) 1783 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1784 return (0); 1785 1786 case FBIOPUTCMAP: /* set color palette */ 1787 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1788 ((struct fbcmap *)arg)->count, 1789 ((struct fbcmap *)arg)->red, 1790 ((struct fbcmap *)arg)->green, 1791 ((struct fbcmap *)arg)->blue, NULL)) 1792 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1793 return (0); 1794 1795 default: 1796 return ((*prevvidsw->ioctl)(adp, cmd, arg)); 1797 } 1798 } 1799 1800 static int 1801 vesa_diag(video_adapter_t *adp, int level) 1802 { 1803 int error; 1804 1805 /* call the previous handler first */ 1806 error = (*prevvidsw->diag)(adp, level); 1807 if (error) 1808 return (error); 1809 1810 if (adp != vesa_adp) 1811 return (1); 1812 1813 if (level <= 0) 1814 return (0); 1815 1816 return (0); 1817 } 1818 1819 static int 1820 vesa_bios_info(int level) 1821 { 1822 #if VESA_DEBUG > 1 1823 struct vesa_mode vmode; 1824 int i; 1825 #endif 1826 uint16_t vers; 1827 1828 vers = vesa_adp_info->v_version; 1829 1830 if (bootverbose) { 1831 /* general adapter information */ 1832 printf( 1833 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1834 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8), 1835 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f), 1836 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1837 vesa_vmodetab, vesa_adp_info->v_modetable); 1838 1839 /* OEM string */ 1840 if (vesa_oemstr != NULL) 1841 printf("VESA: %s\n", vesa_oemstr); 1842 } 1843 1844 if (level <= 0) 1845 return (0); 1846 1847 if (vers >= 0x0200 && bootverbose) { 1848 /* vender name, product name, product revision */ 1849 printf("VESA: %s %s %s\n", 1850 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1851 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1852 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1853 } 1854 1855 #if VESA_DEBUG > 1 1856 /* mode information */ 1857 for (i = 0; 1858 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1859 && (vesa_vmodetab[i] != 0xffff); ++i) { 1860 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT)) 1861 continue; 1862 1863 /* print something for diagnostic purpose */ 1864 printf("VESA: mode:0x%03x, flags:0x%04x", 1865 vesa_vmodetab[i], vmode.v_modeattr); 1866 if (vmode.v_modeattr & V_MODEOPTINFO) { 1867 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1868 printf(", G %dx%dx%d %d, ", 1869 vmode.v_width, vmode.v_height, 1870 vmode.v_bpp, vmode.v_planes); 1871 } else { 1872 printf(", T %dx%d, ", 1873 vmode.v_width, vmode.v_height); 1874 } 1875 printf("font:%dx%d, ", 1876 vmode.v_cwidth, vmode.v_cheight); 1877 printf("pages:%d, mem:%d", 1878 vmode.v_ipages + 1, vmode.v_memmodel); 1879 } 1880 if (vmode.v_modeattr & V_MODELFB) { 1881 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1882 vmode.v_lfb, vmode.v_offscreen, 1883 vmode.v_offscreensize*1024); 1884 } 1885 printf("\n"); 1886 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1887 vmode.v_waseg, vmode.v_waattr, 1888 vmode.v_wbseg, vmode.v_wbattr); 1889 printf("size:%dk, gran:%dk\n", 1890 vmode.v_wsize, vmode.v_wgran); 1891 } 1892 #endif /* VESA_DEBUG > 1 */ 1893 1894 return (0); 1895 } 1896 1897 /* module loading */ 1898 1899 static int 1900 vesa_load(void) 1901 { 1902 int error; 1903 1904 if (vesa_init_done) 1905 return (0); 1906 1907 /* locate a VGA adapter */ 1908 vesa_adp = NULL; 1909 error = vesa_configure(0); 1910 1911 if (error == 0) 1912 vesa_bios_info(bootverbose); 1913 1914 return (error); 1915 } 1916 1917 static int 1918 vesa_unload(void) 1919 { 1920 u_char palette[256*3]; 1921 int error; 1922 1923 /* if the adapter is currently in a VESA mode, don't unload */ 1924 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1925 return (EBUSY); 1926 /* 1927 * FIXME: if there is at least one vty which is in a VESA mode, 1928 * we shouldn't be unloading! XXX 1929 */ 1930 1931 if ((error = vesa_unload_ioctl()) == 0) { 1932 if (vesa_adp != NULL) { 1933 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) { 1934 vesa_bios_save_palette(0, 256, palette, 8); 1935 vesa_bios_set_dac(6); 1936 vesa_adp->va_flags &= ~V_ADP_DAC8; 1937 vesa_bios_load_palette(0, 256, palette, 6); 1938 } 1939 vesa_adp->va_flags &= ~V_ADP_VESA; 1940 vidsw[vesa_adp->va_index] = prevvidsw; 1941 } 1942 } 1943 1944 vesa_bios_uninit(); 1945 1946 return (error); 1947 } 1948 1949 static int 1950 vesa_mod_event(module_t mod, int type, void *data) 1951 { 1952 1953 switch (type) { 1954 case MOD_LOAD: 1955 return (vesa_load()); 1956 case MOD_UNLOAD: 1957 return (vesa_unload()); 1958 } 1959 return (EOPNOTSUPP); 1960 } 1961 1962 static moduledata_t vesa_mod = { 1963 "vesa", 1964 vesa_mod_event, 1965 NULL, 1966 }; 1967 1968 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1969 MODULE_DEPEND(vesa, x86bios, 1, 1, 1); 1970 1971 #endif /* VGA_NO_MODE_CHANGE */
Cache object: 356081f411f713cd7f3930f365489af5
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