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/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <sys/malloc.h> 40 #include <sys/fbio.h> 41 42 #include <vm/vm.h> 43 #include <vm/vm_extern.h> 44 #include <vm/vm_kern.h> 45 #include <vm/vm_param.h> 46 #include <vm/pmap.h> 47 48 #include <dev/fb/vesa.h> 49 50 #include <dev/fb/fbreg.h> 51 #include <dev/fb/vgareg.h> 52 53 #include <isa/isareg.h> 54 #include <machine/cpufunc.h> 55 56 #include <contrib/x86emu/x86emu.h> 57 #include <contrib/x86emu/x86emu_regs.h> 58 59 #define VESA_VIA_CLE266 "VIA CLE266\r\n" 60 61 #ifndef VESA_DEBUG 62 #define VESA_DEBUG 0 63 #endif 64 65 /* VESA video adapter state buffer stub */ 66 struct adp_state { 67 int sig; 68 #define V_STATE_SIG 0x61736576 69 u_char regs[1]; 70 }; 71 typedef struct adp_state adp_state_t; 72 73 /* VESA video adapter */ 74 static video_adapter_t *vesa_adp = NULL; 75 static int vesa_state_buf_size = 0; 76 #define VESA_X86EMU_BUFSIZE (3 * PAGE_SIZE) 77 78 /* VESA functions */ 79 #if 0 80 static int vesa_nop(void); 81 #endif 82 static int vesa_error(void); 83 static vi_probe_t vesa_probe; 84 static vi_init_t vesa_init; 85 static vi_get_info_t vesa_get_info; 86 static vi_query_mode_t vesa_query_mode; 87 static vi_set_mode_t vesa_set_mode; 88 static vi_save_font_t vesa_save_font; 89 static vi_load_font_t vesa_load_font; 90 static vi_show_font_t vesa_show_font; 91 static vi_save_palette_t vesa_save_palette; 92 static vi_load_palette_t vesa_load_palette; 93 static vi_set_border_t vesa_set_border; 94 static vi_save_state_t vesa_save_state; 95 static vi_load_state_t vesa_load_state; 96 static vi_set_win_org_t vesa_set_origin; 97 static vi_read_hw_cursor_t vesa_read_hw_cursor; 98 static vi_set_hw_cursor_t vesa_set_hw_cursor; 99 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 100 static vi_blank_display_t vesa_blank_display; 101 static vi_mmap_t vesa_mmap; 102 static vi_ioctl_t vesa_ioctl; 103 static vi_clear_t vesa_clear; 104 static vi_fill_rect_t vesa_fill_rect; 105 static vi_bitblt_t vesa_bitblt; 106 static vi_diag_t vesa_diag; 107 static int vesa_bios_info(int level); 108 109 static struct x86emu vesa_emu; 110 111 static video_switch_t vesavidsw = { 112 vesa_probe, 113 vesa_init, 114 vesa_get_info, 115 vesa_query_mode, 116 vesa_set_mode, 117 vesa_save_font, 118 vesa_load_font, 119 vesa_show_font, 120 vesa_save_palette, 121 vesa_load_palette, 122 vesa_set_border, 123 vesa_save_state, 124 vesa_load_state, 125 vesa_set_origin, 126 vesa_read_hw_cursor, 127 vesa_set_hw_cursor, 128 vesa_set_hw_cursor_shape, 129 vesa_blank_display, 130 vesa_mmap, 131 vesa_ioctl, 132 vesa_clear, 133 vesa_fill_rect, 134 vesa_bitblt, 135 vesa_error, 136 vesa_error, 137 vesa_diag, 138 }; 139 140 static video_switch_t *prevvidsw; 141 142 /* VESA BIOS video modes */ 143 #define VESA_MAXMODES 64 144 #define EOT (-1) 145 #define NA (-2) 146 147 #define MODE_TABLE_DELTA 8 148 149 static int vesa_vmode_max = 0; 150 static video_info_t vesa_vmode_empty = { EOT }; 151 static video_info_t *vesa_vmode = &vesa_vmode_empty; 152 153 static int vesa_init_done = FALSE; 154 static int has_vesa_bios = FALSE; 155 static struct vesa_info *vesa_adp_info = NULL; 156 static u_int16_t *vesa_vmodetab = NULL; 157 static char *vesa_oemstr = NULL; 158 static char *vesa_venderstr = NULL; 159 static char *vesa_prodstr = NULL; 160 static char *vesa_revstr = NULL; 161 162 /* local macros and functions */ 163 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 164 165 static int int10_set_mode(int mode); 166 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 167 static int vesa_bios_set_mode(int mode); 168 static int vesa_bios_get_dac(void); 169 static int vesa_bios_set_dac(int bits); 170 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 171 int bits); 172 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 173 u_char *b, int bits); 174 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 175 int bits); 176 #ifdef notyet 177 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 178 u_char *b, int bits); 179 #endif 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 int vesa_bios_state_buf_size(void); 190 static int vesa_bios_save_restore(int code, void *p, size_t size); 191 static int vesa_bios_get_line_length(void); 192 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 193 #if 0 194 static int vesa_bios_get_start(int *x, int *y); 195 #endif 196 static int vesa_bios_set_start(int x, int y); 197 static int vesa_map_gen_mode_num(int type, int color, int mode); 198 static int vesa_translate_flags(u_int16_t vflags); 199 static int vesa_translate_mmodel(u_int8_t vmodel); 200 static int vesa_bios_init(void); 201 static void vesa_clear_modes(video_info_t *info, int color); 202 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size); 203 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size); 204 205 #if 0 206 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 207 #endif 208 209 #define SEG_ADDR(x) (((x) >> 4) & 0x00F000) 210 #define SEG_OFF(x) ((x) & 0x0FFFF) 211 212 #if _BYTE_ORDER == _LITTLE_ENDIAN 213 #define B_O16(x) (x) 214 #define B_O32(x) (x) 215 #else 216 #define B_O16(x) ((((x) & 0xff) << 8) | (((x) & 0xff) >> 8)) 217 #define B_O32(x) ((((x) & 0xff) << 24) | (((x) & 0xff00) << 8) \ 218 | (((x) & 0xff0000) >> 8) | (((x) & 0xff000000) >> 24)) 219 #endif 220 221 #define L_ADD(x) (B_O32(x) & 0xffff) + ((B_O32(x) >> 12) & 0xffff00) 222 #define FARP(p) (((unsigned)(p & 0xffff0000) >> 12) | (p & 0xffff)) 223 224 #define REALOFF(x) (x*4096) 225 226 static unsigned char *emumem = NULL; 227 228 static uint8_t 229 vm86_emu_inb(struct x86emu *emu, uint16_t port) 230 { 231 if (port == 0xb2) /* APM scratch register */ 232 return 0; 233 if (port >= 0x80 && port < 0x88) /* POST status register */ 234 return 0; 235 return inb(port); 236 } 237 238 static uint16_t 239 vm86_emu_inw(struct x86emu *emu, uint16_t port) 240 { 241 if (port >= 0x80 && port < 0x88) /* POST status register */ 242 return 0; 243 return inw(port); 244 } 245 246 static uint32_t 247 vm86_emu_inl(struct x86emu *emu, uint16_t port) 248 { 249 if (port >= 0x80 && port < 0x88) /* POST status register */ 250 return 0; 251 return inl(port); 252 } 253 254 static void 255 vm86_emu_outb(struct x86emu *emu, uint16_t port, uint8_t val) 256 { 257 if (port == 0xb2) /* APM scratch register */ 258 return; 259 if (port >= 0x80 && port < 0x88) /* POST status register */ 260 return; 261 outb(port, val); 262 } 263 264 static void 265 vm86_emu_outw(struct x86emu *emu, uint16_t port, uint16_t val) 266 { 267 if (port >= 0x80 && port < 0x88) /* POST status register */ 268 return; 269 outw(port, val); 270 } 271 272 static void 273 vm86_emu_outl(struct x86emu *emu, uint16_t port, uint32_t val) 274 { 275 if (port >= 0x80 && port < 0x88) /* POST status register */ 276 return; 277 outl(port, val); 278 } 279 280 static void 281 dump_buffer(u_char *buf, size_t len) 282 { 283 int i; 284 285 for(i = 0; i < len;) { 286 printf("%02x ", buf[i]); 287 if ((++i % 16) == 0) 288 printf("\n"); 289 } 290 } 291 292 /* INT 10 BIOS calls */ 293 static int 294 int10_set_mode(int mode) 295 { 296 vesa_emu.x86.R_EAX = 0x0000 | mode; 297 x86emu_exec_intr(&vesa_emu, 0x10); 298 299 return 0; 300 } 301 302 /* VESA BIOS calls */ 303 static int 304 vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 305 { 306 u_char *buf; 307 308 vesa_emu.x86.R_EAX = 0x4f01; 309 vesa_emu.x86.R_ECX = mode; 310 311 buf = (emumem + REALOFF(3)); 312 vesa_emu.x86.R_ES = SEG_ADDR(REALOFF(3)); 313 vesa_emu.x86.R_DI = SEG_OFF(REALOFF(3)); 314 315 x86emu_exec_intr(&vesa_emu, 0x10); 316 317 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 318 return 1; 319 320 bcopy(buf, vmode, sizeof(*vmode)); 321 322 return 0; 323 } 324 325 static int 326 vesa_bios_set_mode(int mode) 327 { 328 vesa_emu.x86.R_EAX = 0x4f02; 329 vesa_emu.x86.R_EBX = mode; 330 331 x86emu_exec_intr(&vesa_emu, 0x10); 332 333 return ((vesa_emu.x86.R_AX & 0xff) != 0x4f); 334 } 335 336 static int 337 vesa_bios_get_dac(void) 338 { 339 vesa_emu.x86.R_EAX = 0x4f08; 340 vesa_emu.x86.R_EBX = 1; 341 342 x86emu_exec_intr(&vesa_emu, 0x10); 343 344 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 345 return 6; 346 347 return ((vesa_emu.x86.R_EBX >> 8) & 0x00ff); 348 } 349 350 static int 351 vesa_bios_set_dac(int bits) 352 { 353 vesa_emu.x86.R_EAX = 0x4f08; 354 vesa_emu.x86.R_EBX = (bits << 8); 355 356 x86emu_exec_intr(&vesa_emu, 0x10); 357 358 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 359 return 6; 360 361 return ((vesa_emu.x86.R_EBX >> 8) & 0x00ff); 362 } 363 364 static int 365 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 366 { 367 u_char *p; 368 int i; 369 370 vesa_emu.x86.R_EAX = 0x4f09; 371 vesa_emu.x86.R_EBX = 1; 372 vesa_emu.x86.R_ECX = colors; 373 vesa_emu.x86.R_EDX = start; 374 375 vesa_emu.x86.R_ES = SEG_ADDR(REALOFF(2)); 376 vesa_emu.x86.R_DI = SEG_OFF(REALOFF(2)); 377 378 p = emumem + REALOFF(2); 379 380 x86emu_exec_intr(&vesa_emu, 0x10); 381 382 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 383 return 1; 384 385 bits = 8 - bits; 386 for (i = 0; i < colors; ++i) { 387 palette[i*3] = p[i*4 + 2] << bits; 388 palette[i*3 + 1] = p[i*4 + 1] << bits; 389 palette[i*3 + 2] = p[i*4] << bits; 390 } 391 return 0; 392 } 393 394 static int 395 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 396 int bits) 397 { 398 u_char *p; 399 int i; 400 401 vesa_emu.x86.R_EAX = 0x4f09; 402 vesa_emu.x86.R_EBX = 1; 403 vesa_emu.x86.R_ECX = colors; 404 vesa_emu.x86.R_EDX = start; 405 406 vesa_emu.x86.R_ES = SEG_ADDR(REALOFF(2)); 407 vesa_emu.x86.R_DI = SEG_OFF(REALOFF(2)); 408 409 p = emumem + REALOFF(2); 410 411 x86emu_exec_intr(&vesa_emu, 0x10); 412 413 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 414 return 1; 415 416 bits = 8 - bits; 417 for (i = 0; i < colors; ++i) { 418 r[i] = p[i*4 + 2] << bits; 419 g[i] = p[i*4 + 1] << bits; 420 b[i] = p[i*4] << bits; 421 } 422 return 0; 423 } 424 425 static int 426 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 427 { 428 u_char *p; 429 int i; 430 431 p = (emumem + REALOFF(2)); 432 433 bits = 8 - bits; 434 for (i = 0; i < colors; ++i) { 435 p[i*4] = palette[i*3 + 2] >> bits; 436 p[i*4 + 1] = palette[i*3 + 1] >> bits; 437 p[i*4 + 2] = palette[i*3] >> bits; 438 p[i*4 + 3] = 0; 439 } 440 441 vesa_emu.x86.R_EAX = 0x4f09; 442 vesa_emu.x86.R_EBX = 0; 443 vesa_emu.x86.R_ECX = colors; 444 vesa_emu.x86.R_EDX = start; 445 446 vesa_emu.x86.R_ES = SEG_ADDR(REALOFF(2)); 447 vesa_emu.x86.R_DI = SEG_OFF(REALOFF(2)); 448 449 x86emu_exec_intr(&vesa_emu, 0x10); 450 451 return ((vesa_emu.x86.R_AX & 0xff) != 0x4f); 452 } 453 454 #ifdef notyet 455 static int 456 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 457 int bits) 458 { 459 u_char *p; 460 int i; 461 462 p = (emumem + REALOFF(2)); 463 464 bits = 8 - bits; 465 for (i = 0; i < colors; ++i) { 466 p[i*4] = b[i] >> bits; 467 p[i*4 + 1] = g[i] >> bits; 468 p[i*4 + 2] = r[i] >> bits; 469 p[i*4 + 3] = 0; 470 } 471 472 vesa_emu.x86.R_EAX = 0x4f09; 473 vesa_emu.x86.R_EBX = 0; 474 vesa_emu.x86.R_ECX = colors; 475 vesa_emu.x86.R_EDX = start; 476 477 vesa_emu.x86.R_ES = SEG_ADDR(REALOFF(2)); 478 vesa_emu.x86.R_DI = SEG_OFF(REALOFF(2)); 479 480 x86emu_exec_intr(&vesa_emu, 0x10); 481 482 return ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 483 } 484 #endif 485 486 static int 487 vesa_bios_state_buf_size(void) 488 { 489 vesa_emu.x86.R_EAX = 0x4f04; 490 vesa_emu.x86.R_ECX = STATE_ALL; 491 vesa_emu.x86.R_EDX = STATE_SIZE; 492 493 x86emu_exec_intr(&vesa_emu, 0x10); 494 495 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 496 return 0; 497 498 return vesa_emu.x86.R_BX*64; 499 } 500 501 static int 502 vesa_bios_save_restore(int code, void *p, size_t size) 503 { 504 u_char *buf; 505 506 if (size > VESA_X86EMU_BUFSIZE) 507 return (1); 508 509 vesa_emu.x86.R_EAX = 0x4f04; 510 vesa_emu.x86.R_ECX = STATE_ALL; 511 vesa_emu.x86.R_EDX = code; 512 513 buf = emumem + REALOFF(2); 514 515 vesa_emu.x86.R_ES = SEG_ADDR(REALOFF(2)); 516 vesa_emu.x86.R_DI = SEG_OFF(REALOFF(2)); 517 518 bcopy(p, buf, size); 519 520 x86emu_exec_intr(&vesa_emu, 0x10); 521 522 bcopy(buf, p, size); 523 524 return ((vesa_emu.x86.R_AX & 0xff) != 0x4f); 525 } 526 527 static int 528 vesa_bios_get_line_length(void) 529 { 530 vesa_emu.x86.R_EAX = 0x4f06; 531 vesa_emu.x86.R_EBX = 1; 532 533 x86emu_exec_intr(&vesa_emu, 0x10); 534 535 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 536 return -1; 537 return vesa_emu.x86.R_BX; 538 } 539 540 static int 541 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 542 { 543 vesa_emu.x86.R_EAX = 0x4f06; 544 vesa_emu.x86.R_EBX = 0; 545 vesa_emu.x86.R_ECX = pixel; 546 547 x86emu_exec_intr(&vesa_emu, 0x10); 548 549 #if VESA_DEBUG > 1 550 printf("bx:%d, cx:%d, dx:%d\n", vesa_emu.x86.R_BX, vesa_emu.x86.R_CX, vesa_emu.x86.R_DX); 551 #endif 552 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 553 return -1; 554 555 if (bytes) 556 *bytes = vesa_emu.x86.R_BX; 557 if (lines) 558 *lines = vesa_emu.x86.R_DX; 559 560 return 0; 561 } 562 563 #if 0 564 static int 565 vesa_bios_get_start(int *x, int *y) 566 { 567 vesa_emu.x86.R_EAX = 0x4f07; 568 vesa_emu.x86.R_EBX = 1; 569 570 x86emu_exec_intr(&vesa_emu, 0x10); 571 572 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 573 return -1; 574 575 *x = vesa_emu.x86.R_CX; 576 *y = vesa_emu.x86.R_DX; 577 578 return 0; 579 } 580 #endif 581 582 static int 583 vesa_bios_set_start(int x, int y) 584 { 585 vesa_emu.x86.R_EAX = 0x4f07; 586 vesa_emu.x86.R_EBX = 0x80; 587 vesa_emu.x86.R_EDX = y; 588 vesa_emu.x86.R_ECX = x; 589 590 x86emu_exec_intr(&vesa_emu, 0x10); 591 592 return ((vesa_emu.x86.R_AX & 0xff) != 0x4f); 593 } 594 595 /* map a generic video mode to a known mode */ 596 static int 597 vesa_map_gen_mode_num(int type, int color, int mode) 598 { 599 static struct { 600 int from; 601 int to; 602 } mode_map[] = { 603 { M_TEXT_132x25, M_VESA_C132x25 }, 604 { M_TEXT_132x43, M_VESA_C132x43 }, 605 { M_TEXT_132x50, M_VESA_C132x50 }, 606 { M_TEXT_132x60, M_VESA_C132x60 }, 607 }; 608 int i; 609 610 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 611 if (mode_map[i].from == mode) 612 return mode_map[i].to; 613 } 614 return mode; 615 } 616 617 static int 618 vesa_translate_flags(u_int16_t vflags) 619 { 620 static struct { 621 u_int16_t mask; 622 int set; 623 int reset; 624 } ftable[] = { 625 { V_MODECOLOR, V_INFO_COLOR, 0 }, 626 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 627 { V_MODELFB, V_INFO_LINEAR, 0 }, 628 }; 629 int flags; 630 int i; 631 632 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 633 flags |= (vflags & ftable[i].mask) ? 634 ftable[i].set : ftable[i].reset; 635 } 636 return flags; 637 } 638 639 static int 640 vesa_translate_mmodel(u_int8_t vmodel) 641 { 642 static struct { 643 u_int8_t vmodel; 644 int mmodel; 645 } mtable[] = { 646 { V_MMTEXT, V_INFO_MM_TEXT }, 647 { V_MMCGA, V_INFO_MM_CGA }, 648 { V_MMHGC, V_INFO_MM_HGC }, 649 { V_MMEGA, V_INFO_MM_PLANAR }, 650 { V_MMPACKED, V_INFO_MM_PACKED }, 651 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 652 }; 653 int i; 654 655 for (i = 0; mtable[i].mmodel >= 0; ++i) { 656 if (mtable[i].vmodel == vmodel) 657 return mtable[i].mmodel; 658 } 659 return V_INFO_MM_OTHER; 660 } 661 662 static int 663 vesa_bios_init(void) 664 { 665 static struct vesa_info buf; 666 struct vesa_mode vmode; 667 video_info_t *p; 668 u_char *vmbuf; 669 int is_via_cle266; 670 int modes; 671 int i; 672 673 if (vesa_init_done) 674 return 0; 675 676 has_vesa_bios = FALSE; 677 vesa_adp_info = NULL; 678 vesa_vmode_max = 0; 679 vesa_vmode[0].vi_mode = EOT; 680 681 vmbuf = (emumem + REALOFF(2)); 682 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 683 684 vesa_emu.x86.R_EAX = 0x4f00; 685 vesa_emu.x86.R_ES = SEG_ADDR(REALOFF(2)); 686 vesa_emu.x86.R_DI = SEG_OFF(REALOFF(2)); 687 688 x86emu_exec_intr(&vesa_emu, 0x10); 689 690 if (((vesa_emu.x86.R_AX & 0xff) != 0x4f) || bcmp("VESA", vmbuf, 4)) 691 return 1; 692 693 bcopy(vmbuf, &buf, sizeof(buf)); 694 695 vesa_adp_info = &buf; 696 if (bootverbose) { 697 printf("VESA: information block\n"); 698 dump_buffer((u_char *)&buf, sizeof(buf)); 699 } 700 if (vesa_adp_info->v_version < 0x0102) { 701 printf("VESA: VBE version %d.%d is not supported; " 702 "version 1.2 or later is required.\n", 703 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 704 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 705 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 706 + (vesa_adp_info->v_version & 0x000f)); 707 return 1; 708 } 709 710 vesa_oemstr = (char *)(emumem + L_ADD(vesa_adp_info->v_oemstr)); 711 712 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0; 713 714 if (vesa_adp_info->v_version >= 0x0200) { 715 vesa_venderstr = (char *)(emumem+L_ADD(vesa_adp_info->v_venderstr)); 716 vesa_prodstr = (char *)(emumem+L_ADD(vesa_adp_info->v_prodstr)); 717 vesa_revstr = (char *)(emumem+L_ADD(vesa_adp_info->v_revstr)); 718 } 719 720 vesa_vmodetab = (u_int16_t *)(emumem+L_ADD(vesa_adp_info->v_modetable)); 721 722 if (vesa_vmodetab == NULL) 723 return 1; 724 725 for (i = 0, modes = 0; 726 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 727 && (vesa_vmodetab[i] != 0xffff); ++i) { 728 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 729 continue; 730 731 /* reject unsupported modes */ 732 #if 0 733 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO 734 | V_MODENONVGA)) 735 != (V_MODESUPP | V_MODEOPTINFO)) 736 continue; 737 #else 738 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 739 #if VESA_DEBUG > 1 740 printf( 741 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n", 742 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 743 vmode.v_width, vmode.v_height, vmode.v_bpp, 744 vmode.v_modeattr); 745 #endif 746 continue; 747 } 748 #endif 749 750 /* expand the array if necessary */ 751 if (modes >= vesa_vmode_max) { 752 vesa_vmode_max += MODE_TABLE_DELTA; 753 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1), 754 M_DEVBUF, M_WAITOK); 755 #if VESA_DEBUG > 1 756 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 757 modes, vesa_vmode_max); 758 #endif 759 if (modes > 0) { 760 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 761 free(vesa_vmode, M_DEVBUF); 762 } 763 vesa_vmode = p; 764 } 765 766 #if VESA_DEBUG > 1 767 printf("Found VESA %s mode: %d x %d x %d bpp\n", 768 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 769 vmode.v_width, vmode.v_height, vmode.v_bpp); 770 #endif 771 if (is_via_cle266) { 772 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 773 vmode.v_width &= 0xff; 774 vmode.v_waseg = 0xb8000 >> 4; 775 } 776 } 777 778 /* copy some fields */ 779 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 780 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 781 vesa_vmode[modes].vi_width = vmode.v_width; 782 vesa_vmode[modes].vi_height = vmode.v_height; 783 vesa_vmode[modes].vi_depth = vmode.v_bpp; 784 vesa_vmode[modes].vi_planes = vmode.v_planes; 785 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 786 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 787 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4; 788 /* XXX window B */ 789 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024; 790 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024; 791 if (vmode.v_modeattr & V_MODELFB) 792 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 793 else 794 vesa_vmode[modes].vi_buffer = 0; 795 /* XXX */ 796 vesa_vmode[modes].vi_buffer_size 797 = vesa_adp_info->v_memsize*64*1024; 798 #if 0 799 if (vmode.v_offscreen > vmode.v_lfb) 800 vesa_vmode[modes].vi_buffer_size 801 = vmode.v_offscreen + vmode.v_offscreensize*1024 802 - vmode.v_lfb; 803 else 804 vesa_vmode[modes].vi_buffer_size 805 = vmode.v_offscreen + vmode.v_offscreensize*1024 806 #endif 807 vesa_vmode[modes].vi_mem_model 808 = vesa_translate_mmodel(vmode.v_memmodel); 809 vesa_vmode[modes].vi_pixel_fields[0] = 0; 810 vesa_vmode[modes].vi_pixel_fields[1] = 0; 811 vesa_vmode[modes].vi_pixel_fields[2] = 0; 812 vesa_vmode[modes].vi_pixel_fields[3] = 0; 813 vesa_vmode[modes].vi_pixel_fsizes[0] = 0; 814 vesa_vmode[modes].vi_pixel_fsizes[1] = 0; 815 vesa_vmode[modes].vi_pixel_fsizes[2] = 0; 816 vesa_vmode[modes].vi_pixel_fsizes[3] = 0; 817 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) { 818 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 819 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) { 820 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 821 vesa_vmode[modes].vi_pixel_fields[0] 822 = vmode.v_redfieldpos; 823 vesa_vmode[modes].vi_pixel_fields[1] 824 = vmode.v_greenfieldpos; 825 vesa_vmode[modes].vi_pixel_fields[2] 826 = vmode.v_bluefieldpos; 827 vesa_vmode[modes].vi_pixel_fields[3] 828 = vmode.v_resfieldpos; 829 vesa_vmode[modes].vi_pixel_fsizes[0] 830 = vmode.v_redmasksize; 831 vesa_vmode[modes].vi_pixel_fsizes[1] 832 = vmode.v_greenmasksize; 833 vesa_vmode[modes].vi_pixel_fsizes[2] 834 = vmode.v_bluemasksize; 835 vesa_vmode[modes].vi_pixel_fsizes[3] 836 = vmode.v_resmasksize; 837 } else { 838 vesa_vmode[modes].vi_pixel_size = 0; 839 } 840 841 vesa_vmode[modes].vi_flags 842 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 843 ++modes; 844 } 845 vesa_vmode[modes].vi_mode = EOT; 846 if (bootverbose) 847 printf("VESA: %d mode(s) found\n", modes); 848 849 has_vesa_bios = (modes > 0); 850 if (!has_vesa_bios) 851 return (1); 852 853 return (0); 854 } 855 856 static void 857 vesa_clear_modes(video_info_t *info, int color) 858 { 859 while (info->vi_mode != EOT) { 860 if ((info->vi_flags & V_INFO_COLOR) != color) 861 info->vi_mode = NA; 862 ++info; 863 } 864 } 865 866 static vm_offset_t 867 vesa_map_buffer(u_int paddr, size_t size) 868 { 869 vm_offset_t vaddr; 870 u_int off; 871 872 off = paddr - trunc_page(paddr); 873 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off); 874 #if VESA_DEBUG > 1 875 printf("vesa_map_buffer: paddr:%x vaddr:%tx size:%zx off:%x\n", 876 paddr, vaddr, size, off); 877 #endif 878 return (vaddr + off); 879 } 880 881 static void 882 vesa_unmap_buffer(vm_offset_t vaddr, size_t size) 883 { 884 #if VESA_DEBUG > 1 885 printf("vesa_unmap_buffer: vaddr:%tx size:%zx\n", vaddr, size); 886 #endif 887 kmem_free(kernel_map, vaddr, size); 888 } 889 890 /* entry points */ 891 892 static int 893 vesa_configure(int flags) 894 { 895 video_adapter_t *adp; 896 int adapters; 897 int error; 898 int i; 899 900 if (vesa_init_done) 901 return 0; 902 if (flags & VIO_PROBE_ONLY) 903 return 0; /* XXX */ 904 905 /* 906 * If the VESA module has already been loaded, abort loading 907 * the module this time. 908 */ 909 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 910 if (adp->va_flags & V_ADP_VESA) 911 return ENXIO; 912 if (adp->va_type == KD_VGA) 913 break; 914 } 915 /* 916 * The VGA adapter is not found. This is because either 917 * 1) the VGA driver has not been initialized, or 2) the VGA card 918 * is not present. If 1) is the case, we shall defer 919 * initialization for now and try again later. 920 */ 921 if (adp == NULL) { 922 vga_sub_configure = vesa_configure; 923 return ENODEV; 924 } 925 926 /* count number of registered adapters */ 927 for (++i; vid_get_adapter(i) != NULL; ++i) 928 ; 929 adapters = i; 930 931 /* call VESA BIOS */ 932 vesa_adp = adp; 933 if (vesa_bios_init()) { 934 vesa_adp = NULL; 935 return ENXIO; 936 } 937 vesa_adp->va_flags |= V_ADP_VESA; 938 939 /* remove conflicting modes if we have more than one adapter */ 940 if (adapters > 1) { 941 vesa_clear_modes(vesa_vmode, 942 (vesa_adp->va_flags & V_ADP_COLOR) ? 943 V_INFO_COLOR : 0); 944 } 945 946 if ((error = vesa_load_ioctl()) == 0) { 947 prevvidsw = vidsw[vesa_adp->va_index]; 948 vidsw[vesa_adp->va_index] = &vesavidsw; 949 vesa_init_done = TRUE; 950 } else { 951 vesa_adp = NULL; 952 return error; 953 } 954 955 return 0; 956 } 957 958 #if 0 959 static int 960 vesa_nop(void) 961 { 962 return 0; 963 } 964 #endif 965 966 static int 967 vesa_error(void) 968 { 969 return 1; 970 } 971 972 static int 973 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 974 { 975 return (*prevvidsw->probe)(unit, adpp, arg, flags); 976 } 977 978 static int 979 vesa_init(int unit, video_adapter_t *adp, int flags) 980 { 981 return (*prevvidsw->init)(unit, adp, flags); 982 } 983 984 static int 985 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 986 { 987 int i; 988 989 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 990 return 0; 991 992 if (adp != vesa_adp) 993 return 1; 994 995 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 996 vesa_adp->va_flags & V_ADP_COLOR, mode); 997 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 998 if (vesa_vmode[i].vi_mode == NA) 999 continue; 1000 if (vesa_vmode[i].vi_mode == mode) { 1001 *info = vesa_vmode[i]; 1002 return 0; 1003 } 1004 } 1005 return 1; 1006 } 1007 1008 static int 1009 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 1010 { 1011 int i; 1012 1013 if ((*prevvidsw->query_mode)(adp, info) == 0) 1014 return 0; 1015 if (adp != vesa_adp) 1016 return ENODEV; 1017 1018 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 1019 if ((info->vi_width != 0) 1020 && (info->vi_width != vesa_vmode[i].vi_width)) 1021 continue; 1022 if ((info->vi_height != 0) 1023 && (info->vi_height != vesa_vmode[i].vi_height)) 1024 continue; 1025 if ((info->vi_cwidth != 0) 1026 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 1027 continue; 1028 if ((info->vi_cheight != 0) 1029 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 1030 continue; 1031 if ((info->vi_depth != 0) 1032 && (info->vi_depth != vesa_vmode[i].vi_depth)) 1033 continue; 1034 if ((info->vi_planes != 0) 1035 && (info->vi_planes != vesa_vmode[i].vi_planes)) 1036 continue; 1037 /* pixel format, memory model */ 1038 if ((info->vi_flags != 0) 1039 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1040 continue; 1041 *info = vesa_vmode[i]; 1042 return 0; 1043 } 1044 return ENODEV; 1045 } 1046 1047 static int 1048 vesa_set_mode(video_adapter_t *adp, int mode) 1049 { 1050 video_info_t info; 1051 int len; 1052 1053 if (adp != vesa_adp) 1054 return (*prevvidsw->set_mode)(adp, mode); 1055 1056 mode = vesa_map_gen_mode_num(adp->va_type, 1057 adp->va_flags & V_ADP_COLOR, mode); 1058 #if VESA_DEBUG > 0 1059 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1060 adp->va_mode, adp->va_mode, mode, mode); 1061 #endif 1062 /* 1063 * If the current mode is a VESA mode and the new mode is not, 1064 * restore the state of the adapter first by setting one of the 1065 * standard VGA mode, so that non-standard, extended SVGA registers 1066 * are set to the state compatible with the standard VGA modes. 1067 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1068 * the new mode correctly. 1069 */ 1070 if (VESA_MODE(adp->va_mode)) { 1071 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) { 1072 int10_set_mode(adp->va_initial_bios_mode); 1073 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1074 vesa_unmap_buffer(adp->va_buffer, 1075 vesa_adp_info->v_memsize*64*1024); 1076 /* 1077 * Once (*prevvidsw->get_info)() succeeded, 1078 * (*prevvidsw->set_mode)() below won't fail... 1079 */ 1080 } 1081 } 1082 1083 /* we may not need to handle this mode after all... */ 1084 if ((*prevvidsw->set_mode)(adp, mode) == 0) 1085 return 0; 1086 1087 /* is the new mode supported? */ 1088 if (vesa_get_info(adp, mode, &info)) 1089 return 1; 1090 /* assert(VESA_MODE(mode)); */ 1091 1092 #if VESA_DEBUG > 0 1093 printf("VESA: about to set a VESA mode...\n"); 1094 #endif 1095 /* don't use the linear frame buffer for text modes. XXX */ 1096 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1097 info.vi_flags &= ~V_INFO_LINEAR; 1098 1099 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1100 return 1; 1101 1102 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1103 vesa_unmap_buffer(adp->va_buffer, 1104 vesa_adp_info->v_memsize*64*1024); 1105 1106 #if VESA_DEBUG > 0 1107 printf("VESA: mode set!\n"); 1108 #endif 1109 vesa_adp->va_mode = mode; 1110 vesa_adp->va_flags &= ~V_ADP_COLOR; 1111 vesa_adp->va_flags |= 1112 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1113 vesa_adp->va_crtc_addr = 1114 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1115 if (info.vi_flags & V_INFO_LINEAR) { 1116 #if VESA_DEBUG > 1 1117 printf("VESA: setting up LFB\n"); 1118 #endif 1119 vesa_adp->va_buffer = 1120 vesa_map_buffer(info.vi_buffer, 1121 vesa_adp_info->v_memsize*64*1024); 1122 vesa_adp->va_buffer_size = info.vi_buffer_size; 1123 vesa_adp->va_window = vesa_adp->va_buffer; 1124 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes; 1125 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes; 1126 } else { 1127 vesa_adp->va_buffer = 0; 1128 vesa_adp->va_buffer_size = info.vi_buffer_size; 1129 vesa_adp->va_window = (vm_offset_t)(emumem+L_ADD(info.vi_window)); 1130 vesa_adp->va_window_size = info.vi_window_size; 1131 vesa_adp->va_window_gran = info.vi_window_gran; 1132 } 1133 vesa_adp->va_window_orig = 0; 1134 len = vesa_bios_get_line_length(); 1135 if (len > 0) { 1136 vesa_adp->va_line_width = len; 1137 } else if (info.vi_flags & V_INFO_GRAPHICS) { 1138 switch (info.vi_depth/info.vi_planes) { 1139 case 1: 1140 vesa_adp->va_line_width = info.vi_width/8; 1141 break; 1142 case 2: 1143 vesa_adp->va_line_width = info.vi_width/4; 1144 break; 1145 case 4: 1146 vesa_adp->va_line_width = info.vi_width/2; 1147 break; 1148 case 8: 1149 default: /* shouldn't happen */ 1150 vesa_adp->va_line_width = info.vi_width; 1151 break; 1152 case 15: 1153 case 16: 1154 vesa_adp->va_line_width = info.vi_width*2; 1155 break; 1156 case 24: 1157 case 32: 1158 vesa_adp->va_line_width = info.vi_width*4; 1159 break; 1160 } 1161 } else { 1162 vesa_adp->va_line_width = info.vi_width; 1163 } 1164 vesa_adp->va_disp_start.x = 0; 1165 vesa_adp->va_disp_start.y = 0; 1166 #if VESA_DEBUG > 0 1167 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n", 1168 info.vi_width, len, vesa_adp->va_line_width); 1169 #endif 1170 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1171 1172 /* move hardware cursor out of the way */ 1173 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1174 1175 return 0; 1176 } 1177 1178 static int 1179 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1180 u_char *data, int ch, int count) 1181 { 1182 return (*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1183 ch, count); 1184 } 1185 1186 static int 1187 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1188 u_char *data, int ch, int count) 1189 { 1190 return (*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1191 ch, count); 1192 } 1193 1194 static int 1195 vesa_show_font(video_adapter_t *adp, int page) 1196 { 1197 return (*prevvidsw->show_font)(adp, page); 1198 } 1199 1200 static int 1201 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1202 { 1203 int bits; 1204 int error; 1205 1206 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1207 && VESA_MODE(adp->va_mode)) { 1208 bits = vesa_bios_get_dac(); 1209 error = vesa_bios_save_palette(0, 256, palette, bits); 1210 if (error == 0) 1211 return 0; 1212 if (bits != 6) 1213 return error; 1214 } 1215 1216 return (*prevvidsw->save_palette)(adp, palette); 1217 } 1218 1219 static int 1220 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1221 { 1222 #ifdef notyet 1223 int bits; 1224 int error; 1225 1226 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1227 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) { 1228 error = vesa_bios_load_palette(0, 256, palette, bits); 1229 if (error == 0) 1230 return 0; 1231 if (vesa_bios_set_dac(6) != 6) 1232 return 1; 1233 } 1234 #endif /* notyet */ 1235 1236 return (*prevvidsw->load_palette)(adp, palette); 1237 } 1238 1239 static int 1240 vesa_set_border(video_adapter_t *adp, int color) 1241 { 1242 return (*prevvidsw->set_border)(adp, color); 1243 } 1244 1245 static int 1246 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1247 { 1248 if (adp != vesa_adp) 1249 return (*prevvidsw->save_state)(adp, p, size); 1250 1251 if (vesa_state_buf_size == 0) 1252 vesa_state_buf_size = vesa_bios_state_buf_size(); 1253 if (size == 0) 1254 return (sizeof(int) + vesa_state_buf_size); 1255 else if (size < (sizeof(int) + vesa_state_buf_size)) 1256 return 1; 1257 1258 ((adp_state_t *)p)->sig = V_STATE_SIG; 1259 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1260 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1261 vesa_state_buf_size); 1262 } 1263 1264 static int 1265 vesa_load_state(video_adapter_t *adp, void *p) 1266 { 1267 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1268 return (*prevvidsw->load_state)(adp, p); 1269 1270 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1271 vesa_state_buf_size); 1272 } 1273 1274 #if 0 1275 static int 1276 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1277 { 1278 vesa_emu.x86.R_EAX = 0x4f05; 1279 vesa_emu.x86.R_EBX = 0x10; 1280 1281 x86emu_exec_intr(&vesa_emu, 0x10); 1282 1283 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 1284 return 1; 1285 *offset = vesa_emu.x86.DX*adp->va_window_gran; 1286 1287 return 0; 1288 } 1289 #endif 1290 1291 static int 1292 vesa_set_origin(video_adapter_t *adp, off_t offset) 1293 { 1294 /* 1295 * This function should return as quickly as possible to 1296 * maintain good performance of the system. For this reason, 1297 * error checking is kept minimal and let the VESA BIOS to 1298 * detect error. 1299 */ 1300 if (adp != vesa_adp) 1301 return (*prevvidsw->set_win_org)(adp, offset); 1302 1303 /* if this is a linear frame buffer, do nothing */ 1304 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1305 return 0; 1306 /* XXX */ 1307 if (adp->va_window_gran == 0) 1308 return 1; 1309 1310 vesa_emu.x86.R_EAX = 0x4f05; 1311 vesa_emu.x86.R_EBX = 0; 1312 vesa_emu.x86.R_EDX = offset/adp->va_window_gran; 1313 x86emu_exec_intr(&vesa_emu, 0x10); 1314 1315 if ((vesa_emu.x86.R_AX & 0xff) != 0x4f) 1316 return 1; 1317 1318 vesa_emu.x86.R_EAX = 0x4f05; 1319 vesa_emu.x86.R_EBX = 1; 1320 vesa_emu.x86.R_EDX = offset/adp->va_window_gran; 1321 x86emu_exec_intr(&vesa_emu, 0x10); 1322 1323 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1324 return 0; /* XXX */ 1325 } 1326 1327 static int 1328 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1329 { 1330 return (*prevvidsw->read_hw_cursor)(adp, col, row); 1331 } 1332 1333 static int 1334 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1335 { 1336 return (*prevvidsw->set_hw_cursor)(adp, col, row); 1337 } 1338 1339 static int 1340 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1341 int celsize, int blink) 1342 { 1343 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1344 blink); 1345 } 1346 1347 static int 1348 vesa_blank_display(video_adapter_t *adp, int mode) 1349 { 1350 /* XXX: use VESA DPMS */ 1351 return (*prevvidsw->blank_display)(adp, mode); 1352 } 1353 1354 static int 1355 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1356 int prot) 1357 { 1358 #if VESA_DEBUG > 0 1359 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%tx\n", 1360 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1361 #endif 1362 1363 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) { 1364 /* va_window_size == va_buffer_size/vi_planes */ 1365 /* XXX: is this correct? */ 1366 if (offset > adp->va_window_size - PAGE_SIZE) 1367 return -1; 1368 *paddr = adp->va_info.vi_buffer + offset; 1369 return 0; 1370 } else { 1371 return (*prevvidsw->mmap)(adp, offset, paddr, prot); 1372 } 1373 } 1374 1375 static int 1376 vesa_clear(video_adapter_t *adp) 1377 { 1378 return (*prevvidsw->clear)(adp); 1379 } 1380 1381 static int 1382 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1383 { 1384 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy); 1385 } 1386 1387 static int 1388 vesa_bitblt(video_adapter_t *adp,...) 1389 { 1390 /* FIXME */ 1391 return 1; 1392 } 1393 1394 static int 1395 get_palette(video_adapter_t *adp, int base, int count, 1396 u_char *red, u_char *green, u_char *blue, u_char *trans) 1397 { 1398 u_char *r; 1399 u_char *g; 1400 u_char *b; 1401 int bits; 1402 int error; 1403 1404 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256)) 1405 return 1; 1406 if ((base + count) > 256) 1407 return 1; 1408 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)) 1409 return 1; 1410 1411 bits = vesa_bios_get_dac(); 1412 if (bits <= 6) 1413 return 1; 1414 1415 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1416 g = r + count; 1417 b = g + count; 1418 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1419 if (error == 0) { 1420 copyout(r, red, count); 1421 copyout(g, green, count); 1422 copyout(b, blue, count); 1423 if (trans != NULL) { 1424 bzero(r, count); 1425 copyout(r, trans, count); 1426 } 1427 } 1428 free(r, M_DEVBUF); 1429 1430 /* if error && bits != 6 at this point, we are in trouble... XXX */ 1431 return error; 1432 } 1433 1434 static int 1435 set_palette(video_adapter_t *adp, int base, int count, 1436 u_char *red, u_char *green, u_char *blue, u_char *trans) 1437 { 1438 return 1; 1439 #ifdef notyet 1440 u_char *r; 1441 u_char *g; 1442 u_char *b; 1443 int bits; 1444 int error; 1445 1446 if ((base < 0) || (base >= 256) || (base + count > 256)) 1447 return 1; 1448 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode) 1449 || ((bits = vesa_bios_set_dac(8)) <= 6)) 1450 return 1; 1451 1452 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1453 g = r + count; 1454 b = g + count; 1455 copyin(red, r, count); 1456 copyin(green, g, count); 1457 copyin(blue, b, count); 1458 1459 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1460 free(r, M_DEVBUF); 1461 if (error == 0) 1462 return 0; 1463 1464 /* if the following call fails, we are in trouble... XXX */ 1465 vesa_bios_set_dac(6); 1466 return 1; 1467 #endif /* notyet */ 1468 } 1469 1470 static int 1471 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1472 { 1473 int bytes; 1474 1475 if (adp != vesa_adp) 1476 return (*prevvidsw->ioctl)(adp, cmd, arg); 1477 1478 switch (cmd) { 1479 case FBIO_SETWINORG: /* set frame buffer window origin */ 1480 if (!VESA_MODE(adp->va_mode)) 1481 return (*prevvidsw->ioctl)(adp, cmd, arg); 1482 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1483 1484 case FBIO_SETDISPSTART: /* set display start address */ 1485 if (!VESA_MODE(adp->va_mode)) 1486 return (*prevvidsw->ioctl)(adp, cmd, arg); 1487 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1488 ((video_display_start_t *)arg)->y)) 1489 return ENODEV; 1490 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1491 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1492 return 0; 1493 1494 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1495 if (!VESA_MODE(adp->va_mode)) 1496 return (*prevvidsw->ioctl)(adp, cmd, arg); 1497 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1498 return ENODEV; 1499 adp->va_line_width = bytes; 1500 #if VESA_DEBUG > 1 1501 printf("new line width:%d\n", adp->va_line_width); 1502 #endif 1503 return 0; 1504 1505 case FBIO_GETPALETTE: /* get color palette */ 1506 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1507 ((video_color_palette_t *)arg)->count, 1508 ((video_color_palette_t *)arg)->red, 1509 ((video_color_palette_t *)arg)->green, 1510 ((video_color_palette_t *)arg)->blue, 1511 ((video_color_palette_t *)arg)->transparent)) 1512 return (*prevvidsw->ioctl)(adp, cmd, arg); 1513 return 0; 1514 1515 1516 case FBIO_SETPALETTE: /* set color palette */ 1517 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1518 ((video_color_palette_t *)arg)->count, 1519 ((video_color_palette_t *)arg)->red, 1520 ((video_color_palette_t *)arg)->green, 1521 ((video_color_palette_t *)arg)->blue, 1522 ((video_color_palette_t *)arg)->transparent)) 1523 return (*prevvidsw->ioctl)(adp, cmd, arg); 1524 return 0; 1525 1526 case FBIOGETCMAP: /* get color palette */ 1527 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1528 ((struct fbcmap *)arg)->count, 1529 ((struct fbcmap *)arg)->red, 1530 ((struct fbcmap *)arg)->green, 1531 ((struct fbcmap *)arg)->blue, NULL)) 1532 return (*prevvidsw->ioctl)(adp, cmd, arg); 1533 return 0; 1534 1535 case FBIOPUTCMAP: /* set color palette */ 1536 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1537 ((struct fbcmap *)arg)->count, 1538 ((struct fbcmap *)arg)->red, 1539 ((struct fbcmap *)arg)->green, 1540 ((struct fbcmap *)arg)->blue, NULL)) 1541 return (*prevvidsw->ioctl)(adp, cmd, arg); 1542 return 0; 1543 1544 default: 1545 return (*prevvidsw->ioctl)(adp, cmd, arg); 1546 } 1547 } 1548 1549 static int 1550 vesa_diag(video_adapter_t *adp, int level) 1551 { 1552 int error; 1553 1554 /* call the previous handler first */ 1555 error = (*prevvidsw->diag)(adp, level); 1556 if (error) 1557 return error; 1558 1559 if (adp != vesa_adp) 1560 return 1; 1561 1562 if (level <= 0) 1563 return 0; 1564 1565 return 0; 1566 } 1567 1568 static int 1569 vesa_bios_info(int level) 1570 { 1571 #if VESA_DEBUG > 1 1572 struct vesa_mode vmode; 1573 int i; 1574 #endif 1575 1576 if (bootverbose) { 1577 /* general adapter information */ 1578 printf( 1579 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1580 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 + 1581 ((vesa_adp_info->v_version & 0x0f00) >> 8), 1582 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 + 1583 (vesa_adp_info->v_version & 0x000f), 1584 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1585 vesa_vmodetab, vesa_adp_info->v_modetable); 1586 1587 /* OEM string */ 1588 if (vesa_oemstr != NULL) 1589 printf("VESA: %s\n", vesa_oemstr); 1590 } 1591 1592 if (level <= 0) 1593 return 0; 1594 1595 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) { 1596 /* vender name, product name, product revision */ 1597 printf("VESA: %s %s %s\n", 1598 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1599 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1600 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1601 } 1602 1603 #if VESA_DEBUG > 1 1604 /* mode information */ 1605 for (i = 0; 1606 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1607 && (vesa_vmodetab[i] != 0xffff); ++i) { 1608 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1609 continue; 1610 1611 /* print something for diagnostic purpose */ 1612 printf("VESA: mode:0x%03x, flags:0x%04x", 1613 vesa_vmodetab[i], vmode.v_modeattr); 1614 if (vmode.v_modeattr & V_MODEOPTINFO) { 1615 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1616 printf(", G %dx%dx%d %d, ", 1617 vmode.v_width, vmode.v_height, 1618 vmode.v_bpp, vmode.v_planes); 1619 } else { 1620 printf(", T %dx%d, ", 1621 vmode.v_width, vmode.v_height); 1622 } 1623 printf("font:%dx%d, ", 1624 vmode.v_cwidth, vmode.v_cheight); 1625 printf("pages:%d, mem:%d", 1626 vmode.v_ipages + 1, vmode.v_memmodel); 1627 } 1628 if (vmode.v_modeattr & V_MODELFB) { 1629 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1630 vmode.v_lfb, vmode.v_offscreen, 1631 vmode.v_offscreensize*1024); 1632 } 1633 printf("\n"); 1634 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1635 vmode.v_waseg, vmode.v_waattr, 1636 vmode.v_wbseg, vmode.v_wbattr); 1637 printf("size:%dk, gran:%dk\n", 1638 vmode.v_wsize, vmode.v_wgran); 1639 } 1640 #endif /* VESA_DEBUG > 1 */ 1641 1642 return 0; 1643 } 1644 1645 /* module loading */ 1646 1647 static int 1648 vesa_load(void) 1649 { 1650 int error; 1651 int s; 1652 1653 if (vesa_init_done) 1654 return 0; 1655 1656 /* Can `emumem' be NULL here? */ 1657 emumem = pmap_mapbios(0x0, 0xc00000); 1658 1659 memset(&vesa_emu, 0, sizeof(vesa_emu)); 1660 x86emu_init_default(&vesa_emu); 1661 1662 vesa_emu.emu_inb = vm86_emu_inb; 1663 vesa_emu.emu_inw = vm86_emu_inw; 1664 vesa_emu.emu_inl = vm86_emu_inl; 1665 vesa_emu.emu_outb = vm86_emu_outb; 1666 vesa_emu.emu_outw = vm86_emu_outw; 1667 vesa_emu.emu_outl = vm86_emu_outl; 1668 1669 vesa_emu.mem_base = (char *)emumem; 1670 vesa_emu.mem_size = 1024 * 1024; 1671 1672 /* locate a VGA adapter */ 1673 s = spltty(); 1674 vesa_adp = NULL; 1675 error = vesa_configure(0); 1676 splx(s); 1677 1678 if (error == 0) 1679 vesa_bios_info(bootverbose); 1680 1681 return error; 1682 } 1683 1684 static int 1685 vesa_unload(void) 1686 { 1687 u_char palette[256*3]; 1688 int error; 1689 int bits; 1690 int s; 1691 1692 /* if the adapter is currently in a VESA mode, don't unload */ 1693 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1694 return EBUSY; 1695 /* 1696 * FIXME: if there is at least one vty which is in a VESA mode, 1697 * we shouldn't be unloading! XXX 1698 */ 1699 1700 s = spltty(); 1701 if ((error = vesa_unload_ioctl()) == 0) { 1702 if (vesa_adp != NULL) { 1703 if (vesa_adp_info->v_flags & V_DAC8) { 1704 bits = vesa_bios_get_dac(); 1705 if (bits > 6) { 1706 vesa_bios_save_palette(0, 256, 1707 palette, bits); 1708 vesa_bios_set_dac(6); 1709 vesa_bios_load_palette(0, 256, 1710 palette, 6); 1711 } 1712 } 1713 vesa_adp->va_flags &= ~V_ADP_VESA; 1714 vidsw[vesa_adp->va_index] = prevvidsw; 1715 } 1716 } 1717 splx(s); 1718 1719 if (emumem) 1720 pmap_unmapdev((vm_offset_t)emumem, 0xc00000); 1721 1722 return error; 1723 } 1724 1725 static int 1726 vesa_mod_event(module_t mod, int type, void *data) 1727 { 1728 switch (type) { 1729 case MOD_LOAD: 1730 return vesa_load(); 1731 case MOD_UNLOAD: 1732 return vesa_unload(); 1733 default: 1734 return EOPNOTSUPP; 1735 } 1736 return 0; 1737 } 1738 1739 static moduledata_t vesa_mod = { 1740 "vesa", 1741 vesa_mod_event, 1742 NULL, 1743 }; 1744 1745 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1746 MODULE_DEPEND(vesa, x86emu, 1, 1, 1); 1747 1748 #endif /* VGA_NO_MODE_CHANGE */ 1749