Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/vesa.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
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: releng/5.2/sys/i386/isa/vesa.c 117710 2003-07-18 00:06:10Z robert $"); 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/pmap.h> 46 47 #include <machine/md_var.h> 48 #include <machine/vm86.h> 49 #include <machine/pc/bios.h> 50 #include <machine/pc/vesa.h> 51 52 #include <dev/fb/fbreg.h> 53 #include <dev/fb/vgareg.h> 54 55 #ifndef __i386__ 56 #include <isa/isareg.h> 57 #else 58 #include <i386/isa/isa.h> 59 #endif 60 61 #define VESA_VIA_CLE266 "VIA CLE266\r\n" 62 63 #ifndef VESA_DEBUG 64 #define VESA_DEBUG 0 65 #endif 66 67 /* VESA video adapter state buffer stub */ 68 struct adp_state { 69 int sig; 70 #define V_STATE_SIG 0x61736576 71 u_char regs[1]; 72 }; 73 typedef struct adp_state adp_state_t; 74 75 /* VESA video adapter */ 76 static video_adapter_t *vesa_adp = NULL; 77 static int vesa_state_buf_size = 0; 78 79 /* VESA functions */ 80 #if 0 81 static int vesa_nop(void); 82 #endif 83 static int vesa_error(void); 84 static vi_probe_t vesa_probe; 85 static vi_init_t vesa_init; 86 static vi_get_info_t vesa_get_info; 87 static vi_query_mode_t vesa_query_mode; 88 static vi_set_mode_t vesa_set_mode; 89 static vi_save_font_t vesa_save_font; 90 static vi_load_font_t vesa_load_font; 91 static vi_show_font_t vesa_show_font; 92 static vi_save_palette_t vesa_save_palette; 93 static vi_load_palette_t vesa_load_palette; 94 static vi_set_border_t vesa_set_border; 95 static vi_save_state_t vesa_save_state; 96 static vi_load_state_t vesa_load_state; 97 static vi_set_win_org_t vesa_set_origin; 98 static vi_read_hw_cursor_t vesa_read_hw_cursor; 99 static vi_set_hw_cursor_t vesa_set_hw_cursor; 100 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 101 static vi_blank_display_t vesa_blank_display; 102 static vi_mmap_t vesa_mmap; 103 static vi_ioctl_t vesa_ioctl; 104 static vi_clear_t vesa_clear; 105 static vi_fill_rect_t vesa_fill_rect; 106 static vi_bitblt_t vesa_bitblt; 107 static vi_diag_t vesa_diag; 108 static int vesa_bios_info(int level); 109 static struct vm86context vesa_vmcontext; 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 void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, 201 u_char *buf); 202 static int vesa_bios_init(void); 203 static void vesa_clear_modes(video_info_t *info, int color); 204 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size); 205 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size); 206 207 #if 0 208 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 209 #endif 210 211 static void 212 dump_buffer(u_char *buf, size_t len) 213 { 214 int i; 215 216 for(i = 0; i < len;) { 217 printf("%02x ", buf[i]); 218 if ((++i % 16) == 0) 219 printf("\n"); 220 } 221 } 222 223 /* INT 10 BIOS calls */ 224 static int 225 int10_set_mode(int mode) 226 { 227 struct vm86frame vmf; 228 229 bzero(&vmf, sizeof(vmf)); 230 vmf.vmf_eax = 0x0000 | mode; 231 vm86_intcall(0x10, &vmf); 232 return 0; 233 } 234 235 /* VESA BIOS calls */ 236 static int 237 vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 238 { 239 struct vm86frame vmf; 240 u_char *buf; 241 int err; 242 243 bzero(&vmf, sizeof(vmf)); 244 vmf.vmf_eax = 0x4f01; 245 vmf.vmf_ecx = mode; 246 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 247 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di); 248 249 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 250 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 251 return 1; 252 bcopy(buf, vmode, sizeof(*vmode)); 253 return 0; 254 } 255 256 static int 257 vesa_bios_set_mode(int mode) 258 { 259 struct vm86frame vmf; 260 int err; 261 262 bzero(&vmf, sizeof(vmf)); 263 vmf.vmf_eax = 0x4f02; 264 vmf.vmf_ebx = mode; 265 err = vm86_intcall(0x10, &vmf); 266 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 267 } 268 269 static int 270 vesa_bios_get_dac(void) 271 { 272 struct vm86frame vmf; 273 int err; 274 275 bzero(&vmf, sizeof(vmf)); 276 vmf.vmf_eax = 0x4f08; 277 vmf.vmf_ebx = 1; /* get DAC width */ 278 err = vm86_intcall(0x10, &vmf); 279 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 280 return 6; /* XXX */ 281 return ((vmf.vmf_ebx >> 8) & 0x00ff); 282 } 283 284 static int 285 vesa_bios_set_dac(int bits) 286 { 287 struct vm86frame vmf; 288 int err; 289 290 bzero(&vmf, sizeof(vmf)); 291 vmf.vmf_eax = 0x4f08; 292 vmf.vmf_ebx = (bits << 8); 293 err = vm86_intcall(0x10, &vmf); 294 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 295 return 6; /* XXX */ 296 return ((vmf.vmf_ebx >> 8) & 0x00ff); 297 } 298 299 static int 300 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 301 { 302 struct vm86frame vmf; 303 u_char *p; 304 int err; 305 int i; 306 307 bzero(&vmf, sizeof(vmf)); 308 vmf.vmf_eax = 0x4f09; 309 vmf.vmf_ebx = 1; /* get primary palette data */ 310 vmf.vmf_ecx = colors; 311 vmf.vmf_edx = start; 312 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 313 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 314 315 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 316 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 317 return 1; 318 319 bits = 8 - bits; 320 for (i = 0; i < colors; ++i) { 321 palette[i*3] = p[i*4 + 2] << bits; 322 palette[i*3 + 1] = p[i*4 + 1] << bits; 323 palette[i*3 + 2] = p[i*4] << bits; 324 } 325 return 0; 326 } 327 328 static int 329 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 330 int bits) 331 { 332 struct vm86frame vmf; 333 u_char *p; 334 int err; 335 int i; 336 337 bzero(&vmf, sizeof(vmf)); 338 vmf.vmf_eax = 0x4f09; 339 vmf.vmf_ebx = 1; /* get primary palette data */ 340 vmf.vmf_ecx = colors; 341 vmf.vmf_edx = start; 342 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 343 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 344 345 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 346 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 347 return 1; 348 349 bits = 8 - bits; 350 for (i = 0; i < colors; ++i) { 351 r[i] = p[i*4 + 2] << bits; 352 g[i] = p[i*4 + 1] << bits; 353 b[i] = p[i*4] << bits; 354 } 355 return 0; 356 } 357 358 static int 359 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 360 { 361 struct vm86frame vmf; 362 u_char *p; 363 int err; 364 int i; 365 366 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 367 bits = 8 - bits; 368 for (i = 0; i < colors; ++i) { 369 p[i*4] = palette[i*3 + 2] >> bits; 370 p[i*4 + 1] = palette[i*3 + 1] >> bits; 371 p[i*4 + 2] = palette[i*3] >> bits; 372 p[i*4 + 3] = 0; 373 } 374 375 bzero(&vmf, sizeof(vmf)); 376 vmf.vmf_eax = 0x4f09; 377 vmf.vmf_ebx = 0; /* set primary palette data */ 378 vmf.vmf_ecx = colors; 379 vmf.vmf_edx = start; 380 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 381 382 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 383 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 384 } 385 386 #ifdef notyet 387 static int 388 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 389 int bits) 390 { 391 struct vm86frame vmf; 392 u_char *p; 393 int err; 394 int i; 395 396 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 397 bits = 8 - bits; 398 for (i = 0; i < colors; ++i) { 399 p[i*4] = b[i] >> bits; 400 p[i*4 + 1] = g[i] >> bits; 401 p[i*4 + 2] = r[i] >> bits; 402 p[i*4 + 3] = 0; 403 } 404 405 bzero(&vmf, sizeof(vmf)); 406 vmf.vmf_eax = 0x4f09; 407 vmf.vmf_ebx = 0; /* set primary palette data */ 408 vmf.vmf_ecx = colors; 409 vmf.vmf_edx = start; 410 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 411 412 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 413 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 414 } 415 #endif 416 417 static int 418 vesa_bios_state_buf_size(void) 419 { 420 struct vm86frame vmf; 421 int err; 422 423 bzero(&vmf, sizeof(vmf)); 424 vmf.vmf_eax = 0x4f04; 425 vmf.vmf_ecx = STATE_MOST; 426 vmf.vmf_edx = STATE_SIZE; 427 err = vm86_intcall(0x10, &vmf); 428 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 429 return 0; 430 return vmf.vmf_bx*64; 431 } 432 433 static int 434 vesa_bios_save_restore(int code, void *p, size_t size) 435 { 436 struct vm86frame vmf; 437 u_char *buf; 438 int err; 439 440 bzero(&vmf, sizeof(vmf)); 441 vmf.vmf_eax = 0x4f04; 442 vmf.vmf_ecx = STATE_MOST; 443 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */ 444 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 445 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_bx); 446 bcopy(p, buf, size); 447 448 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 449 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 450 } 451 452 static int 453 vesa_bios_get_line_length(void) 454 { 455 struct vm86frame vmf; 456 int err; 457 458 bzero(&vmf, sizeof(vmf)); 459 vmf.vmf_eax = 0x4f06; 460 vmf.vmf_ebx = 1; /* get scan line length */ 461 err = vm86_intcall(0x10, &vmf); 462 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 463 return -1; 464 return vmf.vmf_bx; /* line length in bytes */ 465 } 466 467 static int 468 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 469 { 470 struct vm86frame vmf; 471 int err; 472 473 bzero(&vmf, sizeof(vmf)); 474 vmf.vmf_eax = 0x4f06; 475 vmf.vmf_ebx = 0; /* set scan line length in pixel */ 476 vmf.vmf_ecx = pixel; 477 err = vm86_intcall(0x10, &vmf); 478 #if VESA_DEBUG > 1 479 printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx); 480 #endif 481 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 482 return 1; 483 if (bytes) 484 *bytes = vmf.vmf_bx; 485 if (lines) 486 *lines = vmf.vmf_dx; 487 return 0; 488 } 489 490 #if 0 491 static int 492 vesa_bios_get_start(int *x, int *y) 493 { 494 struct vm86frame vmf; 495 int err; 496 497 bzero(&vmf, sizeof(vmf)); 498 vmf.vmf_eax = 0x4f07; 499 vmf.vmf_ebx = 1; /* get display start */ 500 err = vm86_intcall(0x10, &vmf); 501 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 502 return 1; 503 *x = vmf.vmf_cx; 504 *y = vmf.vmf_dx; 505 return 0; 506 } 507 #endif 508 509 static int 510 vesa_bios_set_start(int x, int y) 511 { 512 struct vm86frame vmf; 513 int err; 514 515 bzero(&vmf, sizeof(vmf)); 516 vmf.vmf_eax = 0x4f07; 517 vmf.vmf_ebx = 0x80; /* set display start */ 518 vmf.vmf_edx = y; 519 vmf.vmf_ecx = x; 520 err = vm86_intcall(0x10, &vmf); 521 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 522 } 523 524 /* map a generic video mode to a known mode */ 525 static int 526 vesa_map_gen_mode_num(int type, int color, int mode) 527 { 528 static struct { 529 int from; 530 int to; 531 } mode_map[] = { 532 { M_TEXT_132x25, M_VESA_C132x25 }, 533 { M_TEXT_132x43, M_VESA_C132x43 }, 534 { M_TEXT_132x50, M_VESA_C132x50 }, 535 { M_TEXT_132x60, M_VESA_C132x60 }, 536 }; 537 int i; 538 539 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 540 if (mode_map[i].from == mode) 541 return mode_map[i].to; 542 } 543 return mode; 544 } 545 546 static int 547 vesa_translate_flags(u_int16_t vflags) 548 { 549 static struct { 550 u_int16_t mask; 551 int set; 552 int reset; 553 } ftable[] = { 554 { V_MODECOLOR, V_INFO_COLOR, 0 }, 555 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 556 { V_MODELFB, V_INFO_LINEAR, 0 }, 557 }; 558 int flags; 559 int i; 560 561 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 562 flags |= (vflags & ftable[i].mask) ? 563 ftable[i].set : ftable[i].reset; 564 } 565 return flags; 566 } 567 568 static int 569 vesa_translate_mmodel(u_int8_t vmodel) 570 { 571 static struct { 572 u_int8_t vmodel; 573 int mmodel; 574 } mtable[] = { 575 { V_MMTEXT, V_INFO_MM_TEXT }, 576 { V_MMCGA, V_INFO_MM_CGA }, 577 { V_MMHGC, V_INFO_MM_HGC }, 578 { V_MMEGA, V_INFO_MM_PLANAR }, 579 { V_MMPACKED, V_INFO_MM_PACKED }, 580 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 581 }; 582 int i; 583 584 for (i = 0; mtable[i].mmodel >= 0; ++i) { 585 if (mtable[i].vmodel == vmodel) 586 return mtable[i].mmodel; 587 } 588 return V_INFO_MM_OTHER; 589 } 590 591 static void 592 *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf) 593 { 594 if (p == 0) 595 return NULL; 596 if (((p >> 16) == seg) && ((p & 0xffff) >= off)) 597 return (void *)(buf + ((p & 0xffff) - off)); 598 else { 599 p = BIOS_SADDRTOLADDR(p); 600 return (void *)BIOS_PADDRTOVADDR(p); 601 } 602 } 603 604 static int 605 vesa_bios_init(void) 606 { 607 static u_char buf[512]; 608 struct vm86frame vmf; 609 struct vesa_mode vmode; 610 video_info_t *p; 611 u_char *vmbuf; 612 int is_via_cle266; 613 int modes; 614 int err; 615 int i; 616 617 if (vesa_init_done) 618 return 0; 619 620 has_vesa_bios = FALSE; 621 vesa_adp_info = NULL; 622 vesa_vmode_max = 0; 623 vesa_vmode[0].vi_mode = EOT; 624 625 vmbuf = (u_char *)vm86_addpage(&vesa_vmcontext, 1, 0); 626 bzero(&vmf, sizeof(vmf)); /* paranoia */ 627 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 628 vmf.vmf_eax = 0x4f00; 629 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di); 630 631 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 632 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4)) 633 return 1; 634 bcopy(vmbuf, buf, sizeof(buf)); 635 vesa_adp_info = (struct vesa_info *)buf; 636 if (bootverbose) { 637 printf("VESA: information block\n"); 638 dump_buffer(buf, 64); 639 } 640 if (vesa_adp_info->v_flags & V_NONVGA) 641 return 1; 642 if (vesa_adp_info->v_version < 0x0102) { 643 printf("VESA: VBE version %d.%d is not supported; " 644 "version 1.2 or later is required.\n", 645 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 646 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 647 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 648 + (vesa_adp_info->v_version & 0x000f)); 649 return 1; 650 } 651 652 /* fix string ptrs */ 653 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr, 654 vmf.vmf_es, vmf.vmf_di, buf); 655 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0; 656 657 if (vesa_adp_info->v_version >= 0x0200) { 658 vesa_venderstr = 659 (char *)vesa_fix_ptr(vesa_adp_info->v_venderstr, 660 vmf.vmf_es, vmf.vmf_di, buf); 661 vesa_prodstr = 662 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr, 663 vmf.vmf_es, vmf.vmf_di, buf); 664 vesa_revstr = 665 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr, 666 vmf.vmf_es, vmf.vmf_di, buf); 667 } 668 669 /* obtain video mode information */ 670 vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable, 671 vmf.vmf_es, vmf.vmf_di, buf); 672 if (vesa_vmodetab == NULL) 673 return 1; 674 for (i = 0, modes = 0; 675 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 676 && (vesa_vmodetab[i] != 0xffff); ++i) { 677 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 678 continue; 679 680 /* reject unsupported modes */ 681 #if 0 682 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO 683 | V_MODENONVGA)) 684 != (V_MODESUPP | V_MODEOPTINFO)) 685 continue; 686 #else 687 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 688 #if VESA_DEBUG > 1 689 printf( 690 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n", 691 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 692 vmode.v_width, vmode.v_height, vmode.v_bpp, 693 vmode.v_modeattr); 694 #endif 695 continue; 696 } 697 #endif 698 699 /* expand the array if necessary */ 700 if (modes >= vesa_vmode_max) { 701 vesa_vmode_max += MODE_TABLE_DELTA; 702 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1), 703 M_DEVBUF, M_WAITOK); 704 #if VESA_DEBUG > 1 705 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 706 modes, vesa_vmode_max); 707 #endif 708 if (modes > 0) { 709 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 710 free(vesa_vmode, M_DEVBUF); 711 } 712 vesa_vmode = p; 713 } 714 715 #if VESA_DEBUG > 1 716 printf("Found VESA %s mode: %d x %d x %d bpp\n", 717 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 718 vmode.v_width, vmode.v_height, vmode.v_bpp); 719 #endif 720 if (is_via_cle266) { 721 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 722 vmode.v_width &= 0xff; 723 vmode.v_waseg = 0xb8000 >> 4; 724 } 725 } 726 727 /* copy some fields */ 728 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 729 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 730 vesa_vmode[modes].vi_width = vmode.v_width; 731 vesa_vmode[modes].vi_height = vmode.v_height; 732 vesa_vmode[modes].vi_depth = vmode.v_bpp; 733 vesa_vmode[modes].vi_planes = vmode.v_planes; 734 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 735 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 736 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4; 737 /* XXX window B */ 738 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024; 739 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024; 740 if (vmode.v_modeattr & V_MODELFB) 741 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 742 else 743 vesa_vmode[modes].vi_buffer = 0; 744 /* XXX */ 745 vesa_vmode[modes].vi_buffer_size 746 = vesa_adp_info->v_memsize*64*1024; 747 #if 0 748 if (vmode.v_offscreen > vmode.v_lfb) 749 vesa_vmode[modes].vi_buffer_size 750 = vmode.v_offscreen + vmode.v_offscreensize*1024 751 - vmode.v_lfb; 752 else 753 vesa_vmode[modes].vi_buffer_size 754 = vmode.v_offscreen + vmode.v_offscreensize*1024 755 #endif 756 vesa_vmode[modes].vi_mem_model 757 = vesa_translate_mmodel(vmode.v_memmodel); 758 vesa_vmode[modes].vi_pixel_fields[0] = 0; 759 vesa_vmode[modes].vi_pixel_fields[1] = 0; 760 vesa_vmode[modes].vi_pixel_fields[2] = 0; 761 vesa_vmode[modes].vi_pixel_fields[3] = 0; 762 vesa_vmode[modes].vi_pixel_fsizes[0] = 0; 763 vesa_vmode[modes].vi_pixel_fsizes[1] = 0; 764 vesa_vmode[modes].vi_pixel_fsizes[2] = 0; 765 vesa_vmode[modes].vi_pixel_fsizes[3] = 0; 766 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) { 767 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 768 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) { 769 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 770 vesa_vmode[modes].vi_pixel_fields[0] 771 = vmode.v_redfieldpos; 772 vesa_vmode[modes].vi_pixel_fields[1] 773 = vmode.v_greenfieldpos; 774 vesa_vmode[modes].vi_pixel_fields[2] 775 = vmode.v_bluefieldpos; 776 vesa_vmode[modes].vi_pixel_fields[3] 777 = vmode.v_resfieldpos; 778 vesa_vmode[modes].vi_pixel_fsizes[0] 779 = vmode.v_redmasksize; 780 vesa_vmode[modes].vi_pixel_fsizes[1] 781 = vmode.v_greenmasksize; 782 vesa_vmode[modes].vi_pixel_fsizes[2] 783 = vmode.v_bluemasksize; 784 vesa_vmode[modes].vi_pixel_fsizes[3] 785 = vmode.v_resmasksize; 786 } else { 787 vesa_vmode[modes].vi_pixel_size = 0; 788 } 789 790 vesa_vmode[modes].vi_flags 791 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 792 ++modes; 793 } 794 vesa_vmode[modes].vi_mode = EOT; 795 if (bootverbose) 796 printf("VESA: %d mode(s) found\n", modes); 797 798 has_vesa_bios = (modes > 0); 799 return (has_vesa_bios ? 0 : 1); 800 } 801 802 static void 803 vesa_clear_modes(video_info_t *info, int color) 804 { 805 while (info->vi_mode != EOT) { 806 if ((info->vi_flags & V_INFO_COLOR) != color) 807 info->vi_mode = NA; 808 ++info; 809 } 810 } 811 812 static vm_offset_t 813 vesa_map_buffer(u_int paddr, size_t size) 814 { 815 vm_offset_t vaddr; 816 u_int off; 817 818 off = paddr - trunc_page(paddr); 819 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off); 820 #if VESA_DEBUG > 1 821 printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n", 822 paddr, vaddr, size, off); 823 #endif 824 return (vaddr + off); 825 } 826 827 static void 828 vesa_unmap_buffer(vm_offset_t vaddr, size_t size) 829 { 830 #if VESA_DEBUG > 1 831 printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size); 832 #endif 833 kmem_free(kernel_map, vaddr, size); 834 } 835 836 /* entry points */ 837 838 static int 839 vesa_configure(int flags) 840 { 841 video_adapter_t *adp; 842 int adapters; 843 int error; 844 int i; 845 846 if (vesa_init_done) 847 return 0; 848 if (flags & VIO_PROBE_ONLY) 849 return 0; /* XXX */ 850 851 /* 852 * If the VESA module has already been loaded, abort loading 853 * the module this time. 854 */ 855 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 856 if (adp->va_flags & V_ADP_VESA) 857 return ENXIO; 858 if (adp->va_type == KD_VGA) 859 break; 860 } 861 /* 862 * The VGA adapter is not found. This is because either 863 * 1) the VGA driver has not been initialized, or 2) the VGA card 864 * is not present. If 1) is the case, we shall defer 865 * initialization for now and try again later. 866 */ 867 if (adp == NULL) { 868 vga_sub_configure = vesa_configure; 869 return ENODEV; 870 } 871 872 /* count number of registered adapters */ 873 for (++i; vid_get_adapter(i) != NULL; ++i) 874 ; 875 adapters = i; 876 877 /* call VESA BIOS */ 878 vesa_adp = adp; 879 if (vesa_bios_init()) { 880 vesa_adp = NULL; 881 return ENXIO; 882 } 883 vesa_adp->va_flags |= V_ADP_VESA; 884 885 /* remove conflicting modes if we have more than one adapter */ 886 if (adapters > 1) { 887 vesa_clear_modes(vesa_vmode, 888 (vesa_adp->va_flags & V_ADP_COLOR) ? 889 V_INFO_COLOR : 0); 890 } 891 892 if ((error = vesa_load_ioctl()) == 0) { 893 prevvidsw = vidsw[vesa_adp->va_index]; 894 vidsw[vesa_adp->va_index] = &vesavidsw; 895 vesa_init_done = TRUE; 896 } else { 897 vesa_adp = NULL; 898 return error; 899 } 900 901 return 0; 902 } 903 904 #if 0 905 static int 906 vesa_nop(void) 907 { 908 return 0; 909 } 910 #endif 911 912 static int 913 vesa_error(void) 914 { 915 return 1; 916 } 917 918 static int 919 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 920 { 921 return (*prevvidsw->probe)(unit, adpp, arg, flags); 922 } 923 924 static int 925 vesa_init(int unit, video_adapter_t *adp, int flags) 926 { 927 return (*prevvidsw->init)(unit, adp, flags); 928 } 929 930 static int 931 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 932 { 933 int i; 934 935 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 936 return 0; 937 938 if (adp != vesa_adp) 939 return 1; 940 941 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 942 vesa_adp->va_flags & V_ADP_COLOR, mode); 943 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 944 if (vesa_vmode[i].vi_mode == NA) 945 continue; 946 if (vesa_vmode[i].vi_mode == mode) { 947 *info = vesa_vmode[i]; 948 return 0; 949 } 950 } 951 return 1; 952 } 953 954 static int 955 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 956 { 957 int i; 958 959 if ((*prevvidsw->query_mode)(adp, info) == 0) 960 return 0; 961 if (adp != vesa_adp) 962 return ENODEV; 963 964 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 965 if ((info->vi_width != 0) 966 && (info->vi_width != vesa_vmode[i].vi_width)) 967 continue; 968 if ((info->vi_height != 0) 969 && (info->vi_height != vesa_vmode[i].vi_height)) 970 continue; 971 if ((info->vi_cwidth != 0) 972 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 973 continue; 974 if ((info->vi_cheight != 0) 975 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 976 continue; 977 if ((info->vi_depth != 0) 978 && (info->vi_depth != vesa_vmode[i].vi_depth)) 979 continue; 980 if ((info->vi_planes != 0) 981 && (info->vi_planes != vesa_vmode[i].vi_planes)) 982 continue; 983 /* pixel format, memory model */ 984 if ((info->vi_flags != 0) 985 && (info->vi_flags != vesa_vmode[i].vi_flags)) 986 continue; 987 *info = vesa_vmode[i]; 988 return 0; 989 } 990 return ENODEV; 991 } 992 993 static int 994 vesa_set_mode(video_adapter_t *adp, int mode) 995 { 996 video_info_t info; 997 int len; 998 999 if (adp != vesa_adp) 1000 return (*prevvidsw->set_mode)(adp, mode); 1001 1002 mode = vesa_map_gen_mode_num(adp->va_type, 1003 adp->va_flags & V_ADP_COLOR, mode); 1004 #if VESA_DEBUG > 0 1005 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1006 adp->va_mode, adp->va_mode, mode, mode); 1007 #endif 1008 /* 1009 * If the current mode is a VESA mode and the new mode is not, 1010 * restore the state of the adapter first by setting one of the 1011 * standard VGA mode, so that non-standard, extended SVGA registers 1012 * are set to the state compatible with the standard VGA modes. 1013 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1014 * the new mode correctly. 1015 */ 1016 if (VESA_MODE(adp->va_mode)) { 1017 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) { 1018 int10_set_mode(adp->va_initial_bios_mode); 1019 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1020 vesa_unmap_buffer(adp->va_buffer, 1021 vesa_adp_info->v_memsize*64*1024); 1022 /* 1023 * Once (*prevvidsw->get_info)() succeeded, 1024 * (*prevvidsw->set_mode)() below won't fail... 1025 */ 1026 } 1027 } 1028 1029 /* we may not need to handle this mode after all... */ 1030 if ((*prevvidsw->set_mode)(adp, mode) == 0) 1031 return 0; 1032 1033 /* is the new mode supported? */ 1034 if (vesa_get_info(adp, mode, &info)) 1035 return 1; 1036 /* assert(VESA_MODE(mode)); */ 1037 1038 #if VESA_DEBUG > 0 1039 printf("VESA: about to set a VESA mode...\n"); 1040 #endif 1041 /* don't use the linear frame buffer for text modes. XXX */ 1042 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1043 info.vi_flags &= ~V_INFO_LINEAR; 1044 1045 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1046 return 1; 1047 1048 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1049 vesa_unmap_buffer(adp->va_buffer, 1050 vesa_adp_info->v_memsize*64*1024); 1051 1052 #if VESA_DEBUG > 0 1053 printf("VESA: mode set!\n"); 1054 #endif 1055 vesa_adp->va_mode = mode; 1056 vesa_adp->va_flags &= ~V_ADP_COLOR; 1057 vesa_adp->va_flags |= 1058 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1059 vesa_adp->va_crtc_addr = 1060 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1061 if (info.vi_flags & V_INFO_LINEAR) { 1062 #if VESA_DEBUG > 1 1063 printf("VESA: setting up LFB\n"); 1064 #endif 1065 vesa_adp->va_buffer = 1066 vesa_map_buffer(info.vi_buffer, 1067 vesa_adp_info->v_memsize*64*1024); 1068 vesa_adp->va_buffer_size = info.vi_buffer_size; 1069 vesa_adp->va_window = vesa_adp->va_buffer; 1070 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes; 1071 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes; 1072 } else { 1073 vesa_adp->va_buffer = 0; 1074 vesa_adp->va_buffer_size = info.vi_buffer_size; 1075 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window); 1076 vesa_adp->va_window_size = info.vi_window_size; 1077 vesa_adp->va_window_gran = info.vi_window_gran; 1078 } 1079 vesa_adp->va_window_orig = 0; 1080 len = vesa_bios_get_line_length(); 1081 if (len > 0) { 1082 vesa_adp->va_line_width = len; 1083 } else if (info.vi_flags & V_INFO_GRAPHICS) { 1084 switch (info.vi_depth/info.vi_planes) { 1085 case 1: 1086 vesa_adp->va_line_width = info.vi_width/8; 1087 break; 1088 case 2: 1089 vesa_adp->va_line_width = info.vi_width/4; 1090 break; 1091 case 4: 1092 vesa_adp->va_line_width = info.vi_width/2; 1093 break; 1094 case 8: 1095 default: /* shouldn't happen */ 1096 vesa_adp->va_line_width = info.vi_width; 1097 break; 1098 } 1099 } else { 1100 vesa_adp->va_line_width = info.vi_width; 1101 } 1102 vesa_adp->va_disp_start.x = 0; 1103 vesa_adp->va_disp_start.y = 0; 1104 #if VESA_DEBUG > 0 1105 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n", 1106 info.vi_width, len, vesa_adp->va_line_width); 1107 #endif 1108 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1109 1110 /* move hardware cursor out of the way */ 1111 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1112 1113 return 0; 1114 } 1115 1116 static int 1117 vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1118 int ch, int count) 1119 { 1120 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count); 1121 } 1122 1123 static int 1124 vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1125 int ch, int count) 1126 { 1127 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count); 1128 } 1129 1130 static int 1131 vesa_show_font(video_adapter_t *adp, int page) 1132 { 1133 return (*prevvidsw->show_font)(adp, page); 1134 } 1135 1136 static int 1137 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1138 { 1139 int bits; 1140 int error; 1141 1142 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1143 && VESA_MODE(adp->va_mode)) { 1144 bits = vesa_bios_get_dac(); 1145 error = vesa_bios_save_palette(0, 256, palette, bits); 1146 if (error == 0) 1147 return 0; 1148 if (bits != 6) 1149 return error; 1150 } 1151 1152 return (*prevvidsw->save_palette)(adp, palette); 1153 } 1154 1155 static int 1156 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1157 { 1158 #if notyet 1159 int bits; 1160 int error; 1161 1162 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1163 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) { 1164 error = vesa_bios_load_palette(0, 256, palette, bits); 1165 if (error == 0) 1166 return 0; 1167 if (vesa_bios_set_dac(6) != 6) 1168 return 1; 1169 } 1170 #endif /* notyet */ 1171 1172 return (*prevvidsw->load_palette)(adp, palette); 1173 } 1174 1175 static int 1176 vesa_set_border(video_adapter_t *adp, int color) 1177 { 1178 return (*prevvidsw->set_border)(adp, color); 1179 } 1180 1181 static int 1182 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1183 { 1184 if (adp != vesa_adp) 1185 return (*prevvidsw->save_state)(adp, p, size); 1186 1187 if (vesa_state_buf_size == 0) 1188 vesa_state_buf_size = vesa_bios_state_buf_size(); 1189 if (size == 0) 1190 return (sizeof(int) + vesa_state_buf_size); 1191 else if (size < (sizeof(int) + vesa_state_buf_size)) 1192 return 1; 1193 1194 ((adp_state_t *)p)->sig = V_STATE_SIG; 1195 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1196 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1197 vesa_state_buf_size); 1198 } 1199 1200 static int 1201 vesa_load_state(video_adapter_t *adp, void *p) 1202 { 1203 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1204 return (*prevvidsw->load_state)(adp, p); 1205 1206 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1207 vesa_state_buf_size); 1208 } 1209 1210 #if 0 1211 static int 1212 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1213 { 1214 struct vm86frame vmf; 1215 int err; 1216 1217 bzero(&vmf, sizeof(vmf)); 1218 vmf.vmf_eax = 0x4f05; 1219 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */ 1220 err = vm86_intcall(0x10, &vmf); 1221 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 1222 return 1; 1223 *offset = vmf.vmf_dx*adp->va_window_gran; 1224 return 0; 1225 } 1226 #endif 1227 1228 static int 1229 vesa_set_origin(video_adapter_t *adp, off_t offset) 1230 { 1231 struct vm86frame vmf; 1232 int err; 1233 1234 /* 1235 * This function should return as quickly as possible to 1236 * maintain good performance of the system. For this reason, 1237 * error checking is kept minimal and let the VESA BIOS to 1238 * detect error. 1239 */ 1240 if (adp != vesa_adp) 1241 return (*prevvidsw->set_win_org)(adp, offset); 1242 1243 /* if this is a linear frame buffer, do nothing */ 1244 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1245 return 0; 1246 /* XXX */ 1247 if (adp->va_window_gran == 0) 1248 return 1; 1249 1250 bzero(&vmf, sizeof(vmf)); 1251 vmf.vmf_eax = 0x4f05; 1252 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */ 1253 vmf.vmf_edx = offset/adp->va_window_gran; 1254 err = vm86_intcall(0x10, &vmf); 1255 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 1256 return 1; 1257 bzero(&vmf, sizeof(vmf)); 1258 vmf.vmf_eax = 0x4f05; 1259 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */ 1260 vmf.vmf_edx = offset/adp->va_window_gran; 1261 err = vm86_intcall(0x10, &vmf); 1262 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1263 return 0; /* XXX */ 1264 } 1265 1266 static int 1267 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1268 { 1269 return (*prevvidsw->read_hw_cursor)(adp, col, row); 1270 } 1271 1272 static int 1273 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1274 { 1275 return (*prevvidsw->set_hw_cursor)(adp, col, row); 1276 } 1277 1278 static int 1279 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1280 int celsize, int blink) 1281 { 1282 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1283 blink); 1284 } 1285 1286 static int 1287 vesa_blank_display(video_adapter_t *adp, int mode) 1288 { 1289 /* XXX: use VESA DPMS */ 1290 return (*prevvidsw->blank_display)(adp, mode); 1291 } 1292 1293 static int 1294 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1295 int prot) 1296 { 1297 #if VESA_DEBUG > 0 1298 printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n", 1299 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1300 #endif 1301 1302 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) { 1303 /* va_window_size == va_buffer_size/vi_planes */ 1304 /* XXX: is this correct? */ 1305 if (offset > adp->va_window_size - PAGE_SIZE) 1306 return -1; 1307 *paddr = adp->va_info.vi_buffer + offset; 1308 return 0; 1309 } else { 1310 return (*prevvidsw->mmap)(adp, offset, paddr, prot); 1311 } 1312 } 1313 1314 static int 1315 vesa_clear(video_adapter_t *adp) 1316 { 1317 return (*prevvidsw->clear)(adp); 1318 } 1319 1320 static int 1321 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1322 { 1323 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy); 1324 } 1325 1326 static int 1327 vesa_bitblt(video_adapter_t *adp,...) 1328 { 1329 /* FIXME */ 1330 return 1; 1331 } 1332 1333 static int 1334 get_palette(video_adapter_t *adp, int base, int count, 1335 u_char *red, u_char *green, u_char *blue, u_char *trans) 1336 { 1337 u_char *r; 1338 u_char *g; 1339 u_char *b; 1340 int bits; 1341 int error; 1342 1343 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256)) 1344 return 1; 1345 if ((base + count) > 256) 1346 return 1; 1347 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)) 1348 return 1; 1349 1350 bits = vesa_bios_get_dac(); 1351 if (bits <= 6) 1352 return 1; 1353 1354 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1355 g = r + count; 1356 b = g + count; 1357 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1358 if (error == 0) { 1359 copyout(r, red, count); 1360 copyout(g, green, count); 1361 copyout(b, blue, count); 1362 if (trans != NULL) { 1363 bzero(r, count); 1364 copyout(r, trans, count); 1365 } 1366 } 1367 free(r, M_DEVBUF); 1368 1369 /* if error && bits != 6 at this point, we are in in trouble... XXX */ 1370 return error; 1371 } 1372 1373 static int 1374 set_palette(video_adapter_t *adp, int base, int count, 1375 u_char *red, u_char *green, u_char *blue, u_char *trans) 1376 { 1377 return 1; 1378 #if notyet 1379 u_char *r; 1380 u_char *g; 1381 u_char *b; 1382 int bits; 1383 int error; 1384 1385 if ((base < 0) || (base >= 256) || (base + count > 256)) 1386 return 1; 1387 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode) 1388 || ((bits = vesa_bios_set_dac(8)) <= 6)) 1389 return 1; 1390 1391 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1392 g = r + count; 1393 b = g + count; 1394 copyin(red, r, count); 1395 copyin(green, g, count); 1396 copyin(blue, b, count); 1397 1398 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1399 free(r, M_DEVBUF); 1400 if (error == 0) 1401 return 0; 1402 1403 /* if the following call fails, we are in trouble... XXX */ 1404 vesa_bios_set_dac(6); 1405 return 1; 1406 #endif /* notyet */ 1407 } 1408 1409 static int 1410 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1411 { 1412 int bytes; 1413 1414 if (adp != vesa_adp) 1415 return (*prevvidsw->ioctl)(adp, cmd, arg); 1416 1417 switch (cmd) { 1418 case FBIO_SETWINORG: /* set frame buffer window origin */ 1419 if (!VESA_MODE(adp->va_mode)) 1420 return (*prevvidsw->ioctl)(adp, cmd, arg); 1421 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1422 1423 case FBIO_SETDISPSTART: /* set display start address */ 1424 if (!VESA_MODE(adp->va_mode)) 1425 return (*prevvidsw->ioctl)(adp, cmd, arg); 1426 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1427 ((video_display_start_t *)arg)->y)) 1428 return ENODEV; 1429 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1430 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1431 return 0; 1432 1433 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1434 if (!VESA_MODE(adp->va_mode)) 1435 return (*prevvidsw->ioctl)(adp, cmd, arg); 1436 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1437 return ENODEV; 1438 adp->va_line_width = bytes; 1439 #if VESA_DEBUG > 1 1440 printf("new line width:%d\n", adp->va_line_width); 1441 #endif 1442 return 0; 1443 1444 case FBIO_GETPALETTE: /* get color palette */ 1445 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1446 ((video_color_palette_t *)arg)->count, 1447 ((video_color_palette_t *)arg)->red, 1448 ((video_color_palette_t *)arg)->green, 1449 ((video_color_palette_t *)arg)->blue, 1450 ((video_color_palette_t *)arg)->transparent)) 1451 return (*prevvidsw->ioctl)(adp, cmd, arg); 1452 return 0; 1453 1454 1455 case FBIO_SETPALETTE: /* set color palette */ 1456 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1457 ((video_color_palette_t *)arg)->count, 1458 ((video_color_palette_t *)arg)->red, 1459 ((video_color_palette_t *)arg)->green, 1460 ((video_color_palette_t *)arg)->blue, 1461 ((video_color_palette_t *)arg)->transparent)) 1462 return (*prevvidsw->ioctl)(adp, cmd, arg); 1463 return 0; 1464 1465 case FBIOGETCMAP: /* get color palette */ 1466 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1467 ((struct fbcmap *)arg)->count, 1468 ((struct fbcmap *)arg)->red, 1469 ((struct fbcmap *)arg)->green, 1470 ((struct fbcmap *)arg)->blue, NULL)) 1471 return (*prevvidsw->ioctl)(adp, cmd, arg); 1472 return 0; 1473 1474 case FBIOPUTCMAP: /* set color palette */ 1475 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1476 ((struct fbcmap *)arg)->count, 1477 ((struct fbcmap *)arg)->red, 1478 ((struct fbcmap *)arg)->green, 1479 ((struct fbcmap *)arg)->blue, NULL)) 1480 return (*prevvidsw->ioctl)(adp, cmd, arg); 1481 return 0; 1482 1483 default: 1484 return (*prevvidsw->ioctl)(adp, cmd, arg); 1485 } 1486 } 1487 1488 static int 1489 vesa_diag(video_adapter_t *adp, int level) 1490 { 1491 int error; 1492 1493 /* call the previous handler first */ 1494 error = (*prevvidsw->diag)(adp, level); 1495 if (error) 1496 return error; 1497 1498 if (adp != vesa_adp) 1499 return 1; 1500 1501 if (level <= 0) 1502 return 0; 1503 1504 return 0; 1505 } 1506 1507 static int 1508 vesa_bios_info(int level) 1509 { 1510 #if VESA_DEBUG > 1 1511 struct vesa_mode vmode; 1512 int i; 1513 #endif 1514 1515 /* general adapter information */ 1516 printf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1517 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 1518 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 1519 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 1520 + (vesa_adp_info->v_version & 0x000f), 1521 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1522 vesa_vmodetab, vesa_adp_info->v_modetable); 1523 /* OEM string */ 1524 if (vesa_oemstr != NULL) 1525 printf("VESA: %s\n", vesa_oemstr); 1526 1527 if (level <= 0) 1528 return 0; 1529 1530 if (vesa_adp_info->v_version >= 0x0200) { 1531 /* vender name, product name, product revision */ 1532 printf("VESA: %s %s %s\n", 1533 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1534 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1535 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1536 } 1537 1538 #if VESA_DEBUG > 1 1539 /* mode information */ 1540 for (i = 0; 1541 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1542 && (vesa_vmodetab[i] != 0xffff); ++i) { 1543 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1544 continue; 1545 1546 /* print something for diagnostic purpose */ 1547 printf("VESA: mode:0x%03x, flags:0x%04x", 1548 vesa_vmodetab[i], vmode.v_modeattr); 1549 if (vmode.v_modeattr & V_MODEOPTINFO) { 1550 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1551 printf(", G %dx%dx%d %d, ", 1552 vmode.v_width, vmode.v_height, 1553 vmode.v_bpp, vmode.v_planes); 1554 } else { 1555 printf(", T %dx%d, ", 1556 vmode.v_width, vmode.v_height); 1557 } 1558 printf("font:%dx%d, ", 1559 vmode.v_cwidth, vmode.v_cheight); 1560 printf("pages:%d, mem:%d", 1561 vmode.v_ipages + 1, vmode.v_memmodel); 1562 } 1563 if (vmode.v_modeattr & V_MODELFB) { 1564 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1565 vmode.v_lfb, vmode.v_offscreen, 1566 vmode.v_offscreensize*1024); 1567 } 1568 printf("\n"); 1569 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1570 vmode.v_waseg, vmode.v_waattr, 1571 vmode.v_wbseg, vmode.v_wbattr); 1572 printf("size:%dk, gran:%dk\n", 1573 vmode.v_wsize, vmode.v_wgran); 1574 } 1575 #endif /* VESA_DEBUG > 1 */ 1576 1577 return 0; 1578 } 1579 1580 /* module loading */ 1581 1582 static int 1583 vesa_load(void) 1584 { 1585 int error; 1586 int s; 1587 1588 if (vesa_init_done) 1589 return 0; 1590 1591 /* locate a VGA adapter */ 1592 s = spltty(); 1593 vesa_adp = NULL; 1594 error = vesa_configure(0); 1595 splx(s); 1596 1597 if (error == 0) 1598 vesa_bios_info(bootverbose); 1599 1600 return error; 1601 } 1602 1603 static int 1604 vesa_unload(void) 1605 { 1606 u_char palette[256*3]; 1607 int error; 1608 int bits; 1609 int s; 1610 1611 /* if the adapter is currently in a VESA mode, don't unload */ 1612 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1613 return EBUSY; 1614 /* 1615 * FIXME: if there is at least one vty which is in a VESA mode, 1616 * we shouldn't be unloading! XXX 1617 */ 1618 1619 s = spltty(); 1620 if ((error = vesa_unload_ioctl()) == 0) { 1621 if (vesa_adp != NULL) { 1622 if (vesa_adp_info->v_flags & V_DAC8) { 1623 bits = vesa_bios_get_dac(); 1624 if (bits > 6) { 1625 vesa_bios_save_palette(0, 256, 1626 palette, bits); 1627 vesa_bios_set_dac(6); 1628 vesa_bios_load_palette(0, 256, 1629 palette, 6); 1630 } 1631 } 1632 vesa_adp->va_flags &= ~V_ADP_VESA; 1633 vidsw[vesa_adp->va_index] = prevvidsw; 1634 } 1635 } 1636 splx(s); 1637 1638 return error; 1639 } 1640 1641 static int 1642 vesa_mod_event(module_t mod, int type, void *data) 1643 { 1644 switch (type) { 1645 case MOD_LOAD: 1646 return vesa_load(); 1647 case MOD_UNLOAD: 1648 return vesa_unload(); 1649 default: 1650 break; 1651 } 1652 return 0; 1653 } 1654 1655 static moduledata_t vesa_mod = { 1656 "vesa", 1657 vesa_mod_event, 1658 NULL, 1659 }; 1660 1661 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1662 1663 #endif /* VGA_NO_MODE_CHANGE */
Cache object: 18151e0f27efbfbc7b8fd52a50885bb7
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]