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sys/i386/isa/vesa.c
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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/6.2/sys/i386/isa/vesa.c 150981 2005-10-05 21:48:03Z marius $"); 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 <machine/md_var.h> 49 #include <machine/vm86.h> 50 #include <machine/pc/bios.h> 51 #include <machine/pc/vesa.h> 52 53 #include <dev/fb/fbreg.h> 54 #include <dev/fb/vgareg.h> 55 56 #ifndef __i386__ 57 #include <isa/isareg.h> 58 #else 59 #include <i386/isa/isa.h> 60 #endif 61 62 #define VESA_VIA_CLE266 "VIA CLE266\r\n" 63 64 #ifndef VESA_DEBUG 65 #define VESA_DEBUG 0 66 #endif 67 68 /* VESA video adapter state buffer stub */ 69 struct adp_state { 70 int sig; 71 #define V_STATE_SIG 0x61736576 72 u_char regs[1]; 73 }; 74 typedef struct adp_state adp_state_t; 75 76 /* VESA video adapter */ 77 static video_adapter_t *vesa_adp = NULL; 78 static int vesa_state_buf_size = 0; 79 #define VESA_VM86_BUFSIZE (3 * PAGE_SIZE) 80 static void *vesa_vm86_buf; 81 82 /* VESA functions */ 83 #if 0 84 static int vesa_nop(void); 85 #endif 86 static int vesa_error(void); 87 static vi_probe_t vesa_probe; 88 static vi_init_t vesa_init; 89 static vi_get_info_t vesa_get_info; 90 static vi_query_mode_t vesa_query_mode; 91 static vi_set_mode_t vesa_set_mode; 92 static vi_save_font_t vesa_save_font; 93 static vi_load_font_t vesa_load_font; 94 static vi_show_font_t vesa_show_font; 95 static vi_save_palette_t vesa_save_palette; 96 static vi_load_palette_t vesa_load_palette; 97 static vi_set_border_t vesa_set_border; 98 static vi_save_state_t vesa_save_state; 99 static vi_load_state_t vesa_load_state; 100 static vi_set_win_org_t vesa_set_origin; 101 static vi_read_hw_cursor_t vesa_read_hw_cursor; 102 static vi_set_hw_cursor_t vesa_set_hw_cursor; 103 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 104 static vi_blank_display_t vesa_blank_display; 105 static vi_mmap_t vesa_mmap; 106 static vi_ioctl_t vesa_ioctl; 107 static vi_clear_t vesa_clear; 108 static vi_fill_rect_t vesa_fill_rect; 109 static vi_bitblt_t vesa_bitblt; 110 static vi_diag_t vesa_diag; 111 static int vesa_bios_info(int level); 112 static struct vm86context vesa_vmcontext; 113 114 static video_switch_t vesavidsw = { 115 vesa_probe, 116 vesa_init, 117 vesa_get_info, 118 vesa_query_mode, 119 vesa_set_mode, 120 vesa_save_font, 121 vesa_load_font, 122 vesa_show_font, 123 vesa_save_palette, 124 vesa_load_palette, 125 vesa_set_border, 126 vesa_save_state, 127 vesa_load_state, 128 vesa_set_origin, 129 vesa_read_hw_cursor, 130 vesa_set_hw_cursor, 131 vesa_set_hw_cursor_shape, 132 vesa_blank_display, 133 vesa_mmap, 134 vesa_ioctl, 135 vesa_clear, 136 vesa_fill_rect, 137 vesa_bitblt, 138 vesa_error, 139 vesa_error, 140 vesa_diag, 141 }; 142 143 static video_switch_t *prevvidsw; 144 145 /* VESA BIOS video modes */ 146 #define VESA_MAXMODES 64 147 #define EOT (-1) 148 #define NA (-2) 149 150 #define MODE_TABLE_DELTA 8 151 152 static int vesa_vmode_max = 0; 153 static video_info_t vesa_vmode_empty = { EOT }; 154 static video_info_t *vesa_vmode = &vesa_vmode_empty; 155 156 static int vesa_init_done = FALSE; 157 static int has_vesa_bios = FALSE; 158 static struct vesa_info *vesa_adp_info = NULL; 159 static u_int16_t *vesa_vmodetab = NULL; 160 static char *vesa_oemstr = NULL; 161 static char *vesa_venderstr = NULL; 162 static char *vesa_prodstr = NULL; 163 static char *vesa_revstr = NULL; 164 165 /* local macros and functions */ 166 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 167 168 static int int10_set_mode(int mode); 169 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 170 static int vesa_bios_set_mode(int mode); 171 static int vesa_bios_get_dac(void); 172 static int vesa_bios_set_dac(int bits); 173 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 174 int bits); 175 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 176 u_char *b, int bits); 177 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 178 int bits); 179 #ifdef notyet 180 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 181 u_char *b, int bits); 182 #endif 183 #define STATE_SIZE 0 184 #define STATE_SAVE 1 185 #define STATE_LOAD 2 186 #define STATE_HW (1<<0) 187 #define STATE_DATA (1<<1) 188 #define STATE_DAC (1<<2) 189 #define STATE_REG (1<<3) 190 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 191 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 192 static int vesa_bios_state_buf_size(void); 193 static int vesa_bios_save_restore(int code, void *p, size_t size); 194 static int vesa_bios_get_line_length(void); 195 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 196 #if 0 197 static int vesa_bios_get_start(int *x, int *y); 198 #endif 199 static int vesa_bios_set_start(int x, int y); 200 static int vesa_map_gen_mode_num(int type, int color, int mode); 201 static int vesa_translate_flags(u_int16_t vflags); 202 static int vesa_translate_mmodel(u_int8_t vmodel); 203 static void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, 204 u_char *buf); 205 static int vesa_bios_init(void); 206 static void vesa_clear_modes(video_info_t *info, int color); 207 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size); 208 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size); 209 210 #if 0 211 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 212 #endif 213 214 static void 215 dump_buffer(u_char *buf, size_t len) 216 { 217 int i; 218 219 for(i = 0; i < len;) { 220 printf("%02x ", buf[i]); 221 if ((++i % 16) == 0) 222 printf("\n"); 223 } 224 } 225 226 /* INT 10 BIOS calls */ 227 static int 228 int10_set_mode(int mode) 229 { 230 struct vm86frame vmf; 231 232 bzero(&vmf, sizeof(vmf)); 233 vmf.vmf_eax = 0x0000 | mode; 234 vm86_intcall(0x10, &vmf); 235 return 0; 236 } 237 238 /* VESA BIOS calls */ 239 static int 240 vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 241 { 242 struct vm86frame vmf; 243 u_char *buf; 244 int err; 245 246 bzero(&vmf, sizeof(vmf)); 247 vmf.vmf_eax = 0x4f01; 248 vmf.vmf_ecx = mode; 249 buf = vesa_vm86_buf; 250 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di); 251 252 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 253 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 254 return 1; 255 bcopy(buf, vmode, sizeof(*vmode)); 256 return 0; 257 } 258 259 static int 260 vesa_bios_set_mode(int mode) 261 { 262 struct vm86frame vmf; 263 int err; 264 265 bzero(&vmf, sizeof(vmf)); 266 vmf.vmf_eax = 0x4f02; 267 vmf.vmf_ebx = mode; 268 err = vm86_intcall(0x10, &vmf); 269 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 270 } 271 272 static int 273 vesa_bios_get_dac(void) 274 { 275 struct vm86frame vmf; 276 int err; 277 278 bzero(&vmf, sizeof(vmf)); 279 vmf.vmf_eax = 0x4f08; 280 vmf.vmf_ebx = 1; /* get DAC width */ 281 err = vm86_intcall(0x10, &vmf); 282 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 283 return 6; /* XXX */ 284 return ((vmf.vmf_ebx >> 8) & 0x00ff); 285 } 286 287 static int 288 vesa_bios_set_dac(int bits) 289 { 290 struct vm86frame vmf; 291 int err; 292 293 bzero(&vmf, sizeof(vmf)); 294 vmf.vmf_eax = 0x4f08; 295 vmf.vmf_ebx = (bits << 8); 296 err = vm86_intcall(0x10, &vmf); 297 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 298 return 6; /* XXX */ 299 return ((vmf.vmf_ebx >> 8) & 0x00ff); 300 } 301 302 static int 303 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 304 { 305 struct vm86frame vmf; 306 u_char *p; 307 int err; 308 int i; 309 310 bzero(&vmf, sizeof(vmf)); 311 vmf.vmf_eax = 0x4f09; 312 vmf.vmf_ebx = 1; /* get primary palette data */ 313 vmf.vmf_ecx = colors; 314 vmf.vmf_edx = start; 315 p = vesa_vm86_buf; 316 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 317 318 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 319 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 320 return 1; 321 322 bits = 8 - bits; 323 for (i = 0; i < colors; ++i) { 324 palette[i*3] = p[i*4 + 2] << bits; 325 palette[i*3 + 1] = p[i*4 + 1] << bits; 326 palette[i*3 + 2] = p[i*4] << bits; 327 } 328 return 0; 329 } 330 331 static int 332 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 333 int bits) 334 { 335 struct vm86frame vmf; 336 u_char *p; 337 int err; 338 int i; 339 340 bzero(&vmf, sizeof(vmf)); 341 vmf.vmf_eax = 0x4f09; 342 vmf.vmf_ebx = 1; /* get primary palette data */ 343 vmf.vmf_ecx = colors; 344 vmf.vmf_edx = start; 345 p = vesa_vm86_buf; 346 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 347 348 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 349 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 350 return 1; 351 352 bits = 8 - bits; 353 for (i = 0; i < colors; ++i) { 354 r[i] = p[i*4 + 2] << bits; 355 g[i] = p[i*4 + 1] << bits; 356 b[i] = p[i*4] << bits; 357 } 358 return 0; 359 } 360 361 static int 362 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 363 { 364 struct vm86frame vmf; 365 u_char *p; 366 int err; 367 int i; 368 369 p = vesa_vm86_buf; 370 bits = 8 - bits; 371 for (i = 0; i < colors; ++i) { 372 p[i*4] = palette[i*3 + 2] >> bits; 373 p[i*4 + 1] = palette[i*3 + 1] >> bits; 374 p[i*4 + 2] = palette[i*3] >> bits; 375 p[i*4 + 3] = 0; 376 } 377 378 bzero(&vmf, sizeof(vmf)); 379 vmf.vmf_eax = 0x4f09; 380 vmf.vmf_ebx = 0; /* set primary palette data */ 381 vmf.vmf_ecx = colors; 382 vmf.vmf_edx = start; 383 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 384 385 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 386 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 387 } 388 389 #ifdef notyet 390 static int 391 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 392 int bits) 393 { 394 struct vm86frame vmf; 395 u_char *p; 396 int err; 397 int i; 398 399 p = vesa_vm86_buf; 400 bits = 8 - bits; 401 for (i = 0; i < colors; ++i) { 402 p[i*4] = b[i] >> bits; 403 p[i*4 + 1] = g[i] >> bits; 404 p[i*4 + 2] = r[i] >> bits; 405 p[i*4 + 3] = 0; 406 } 407 408 bzero(&vmf, sizeof(vmf)); 409 vmf.vmf_eax = 0x4f09; 410 vmf.vmf_ebx = 0; /* set primary palette data */ 411 vmf.vmf_ecx = colors; 412 vmf.vmf_edx = start; 413 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 414 415 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 416 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 417 } 418 #endif 419 420 static int 421 vesa_bios_state_buf_size(void) 422 { 423 struct vm86frame vmf; 424 int err; 425 426 bzero(&vmf, sizeof(vmf)); 427 vmf.vmf_eax = 0x4f04; 428 vmf.vmf_ecx = STATE_ALL; 429 vmf.vmf_edx = STATE_SIZE; 430 err = vm86_intcall(0x10, &vmf); 431 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 432 return 0; 433 return vmf.vmf_bx*64; 434 } 435 436 static int 437 vesa_bios_save_restore(int code, void *p, size_t size) 438 { 439 struct vm86frame vmf; 440 u_char *buf; 441 int err; 442 443 if (size > VESA_VM86_BUFSIZE) 444 return (1); 445 446 bzero(&vmf, sizeof(vmf)); 447 vmf.vmf_eax = 0x4f04; 448 vmf.vmf_ecx = STATE_ALL; 449 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */ 450 buf = vesa_vm86_buf; 451 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_bx); 452 bcopy(p, buf, size); 453 454 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 455 bcopy(buf, p, size); 456 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 457 } 458 459 static int 460 vesa_bios_get_line_length(void) 461 { 462 struct vm86frame vmf; 463 int err; 464 465 bzero(&vmf, sizeof(vmf)); 466 vmf.vmf_eax = 0x4f06; 467 vmf.vmf_ebx = 1; /* get scan line length */ 468 err = vm86_intcall(0x10, &vmf); 469 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 470 return -1; 471 return vmf.vmf_bx; /* line length in bytes */ 472 } 473 474 static int 475 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 476 { 477 struct vm86frame vmf; 478 int err; 479 480 bzero(&vmf, sizeof(vmf)); 481 vmf.vmf_eax = 0x4f06; 482 vmf.vmf_ebx = 0; /* set scan line length in pixel */ 483 vmf.vmf_ecx = pixel; 484 err = vm86_intcall(0x10, &vmf); 485 #if VESA_DEBUG > 1 486 printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx); 487 #endif 488 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 489 return 1; 490 if (bytes) 491 *bytes = vmf.vmf_bx; 492 if (lines) 493 *lines = vmf.vmf_dx; 494 return 0; 495 } 496 497 #if 0 498 static int 499 vesa_bios_get_start(int *x, int *y) 500 { 501 struct vm86frame vmf; 502 int err; 503 504 bzero(&vmf, sizeof(vmf)); 505 vmf.vmf_eax = 0x4f07; 506 vmf.vmf_ebx = 1; /* get display start */ 507 err = vm86_intcall(0x10, &vmf); 508 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 509 return 1; 510 *x = vmf.vmf_cx; 511 *y = vmf.vmf_dx; 512 return 0; 513 } 514 #endif 515 516 static int 517 vesa_bios_set_start(int x, int y) 518 { 519 struct vm86frame vmf; 520 int err; 521 522 bzero(&vmf, sizeof(vmf)); 523 vmf.vmf_eax = 0x4f07; 524 vmf.vmf_ebx = 0x80; /* set display start */ 525 vmf.vmf_edx = y; 526 vmf.vmf_ecx = x; 527 err = vm86_intcall(0x10, &vmf); 528 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 529 } 530 531 /* map a generic video mode to a known mode */ 532 static int 533 vesa_map_gen_mode_num(int type, int color, int mode) 534 { 535 static struct { 536 int from; 537 int to; 538 } mode_map[] = { 539 { M_TEXT_132x25, M_VESA_C132x25 }, 540 { M_TEXT_132x43, M_VESA_C132x43 }, 541 { M_TEXT_132x50, M_VESA_C132x50 }, 542 { M_TEXT_132x60, M_VESA_C132x60 }, 543 }; 544 int i; 545 546 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 547 if (mode_map[i].from == mode) 548 return mode_map[i].to; 549 } 550 return mode; 551 } 552 553 static int 554 vesa_translate_flags(u_int16_t vflags) 555 { 556 static struct { 557 u_int16_t mask; 558 int set; 559 int reset; 560 } ftable[] = { 561 { V_MODECOLOR, V_INFO_COLOR, 0 }, 562 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 563 { V_MODELFB, V_INFO_LINEAR, 0 }, 564 }; 565 int flags; 566 int i; 567 568 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 569 flags |= (vflags & ftable[i].mask) ? 570 ftable[i].set : ftable[i].reset; 571 } 572 return flags; 573 } 574 575 static int 576 vesa_translate_mmodel(u_int8_t vmodel) 577 { 578 static struct { 579 u_int8_t vmodel; 580 int mmodel; 581 } mtable[] = { 582 { V_MMTEXT, V_INFO_MM_TEXT }, 583 { V_MMCGA, V_INFO_MM_CGA }, 584 { V_MMHGC, V_INFO_MM_HGC }, 585 { V_MMEGA, V_INFO_MM_PLANAR }, 586 { V_MMPACKED, V_INFO_MM_PACKED }, 587 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 588 }; 589 int i; 590 591 for (i = 0; mtable[i].mmodel >= 0; ++i) { 592 if (mtable[i].vmodel == vmodel) 593 return mtable[i].mmodel; 594 } 595 return V_INFO_MM_OTHER; 596 } 597 598 static void 599 *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf) 600 { 601 if (p == 0) 602 return NULL; 603 if (((p >> 16) == seg) && ((p & 0xffff) >= off)) 604 return (void *)(buf + ((p & 0xffff) - off)); 605 else { 606 p = BIOS_SADDRTOLADDR(p); 607 return (void *)BIOS_PADDRTOVADDR(p); 608 } 609 } 610 611 static int 612 vesa_bios_init(void) 613 { 614 static u_char buf[512]; 615 struct vm86frame vmf; 616 struct vesa_mode vmode; 617 video_info_t *p; 618 u_char *vmbuf; 619 int is_via_cle266; 620 int modes; 621 int err; 622 int i; 623 624 if (vesa_init_done) 625 return 0; 626 627 has_vesa_bios = FALSE; 628 vesa_adp_info = NULL; 629 vesa_vmode_max = 0; 630 vesa_vmode[0].vi_mode = EOT; 631 632 /* Allocate a buffer and add each page to the vm86 context. */ 633 vesa_vm86_buf = malloc(VESA_VM86_BUFSIZE, M_DEVBUF, M_WAITOK | M_ZERO); 634 KASSERT(((vm_offset_t)vesa_vm86_buf & PAGE_MASK) == 0, 635 ("bad vesa_vm86_buf alignment")); 636 for (i = 0; i < howmany(VESA_VM86_BUFSIZE, PAGE_SIZE); i++) 637 vm86_addpage(&vesa_vmcontext, i + 1, 638 (vm_offset_t)vesa_vm86_buf + PAGE_SIZE * i); 639 640 vmbuf = vesa_vm86_buf; 641 bzero(&vmf, sizeof(vmf)); /* paranoia */ 642 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 643 vmf.vmf_eax = 0x4f00; 644 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di); 645 646 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 647 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4)) 648 return 1; 649 bcopy(vmbuf, buf, sizeof(buf)); 650 vesa_adp_info = (struct vesa_info *)buf; 651 if (bootverbose) { 652 printf("VESA: information block\n"); 653 dump_buffer(buf, 64); 654 } 655 if (vesa_adp_info->v_version < 0x0102) { 656 printf("VESA: VBE version %d.%d is not supported; " 657 "version 1.2 or later is required.\n", 658 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 659 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 660 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 661 + (vesa_adp_info->v_version & 0x000f)); 662 return 1; 663 } 664 665 /* fix string ptrs */ 666 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr, 667 vmf.vmf_es, vmf.vmf_di, buf); 668 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0; 669 670 if (vesa_adp_info->v_version >= 0x0200) { 671 vesa_venderstr = 672 (char *)vesa_fix_ptr(vesa_adp_info->v_venderstr, 673 vmf.vmf_es, vmf.vmf_di, buf); 674 vesa_prodstr = 675 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr, 676 vmf.vmf_es, vmf.vmf_di, buf); 677 vesa_revstr = 678 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr, 679 vmf.vmf_es, vmf.vmf_di, buf); 680 } 681 682 /* obtain video mode information */ 683 vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable, 684 vmf.vmf_es, vmf.vmf_di, buf); 685 if (vesa_vmodetab == NULL) 686 return 1; 687 for (i = 0, modes = 0; 688 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 689 && (vesa_vmodetab[i] != 0xffff); ++i) { 690 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 691 continue; 692 693 /* reject unsupported modes */ 694 #if 0 695 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO 696 | V_MODENONVGA)) 697 != (V_MODESUPP | V_MODEOPTINFO)) 698 continue; 699 #else 700 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 701 #if VESA_DEBUG > 1 702 printf( 703 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n", 704 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 705 vmode.v_width, vmode.v_height, vmode.v_bpp, 706 vmode.v_modeattr); 707 #endif 708 continue; 709 } 710 #endif 711 712 /* expand the array if necessary */ 713 if (modes >= vesa_vmode_max) { 714 vesa_vmode_max += MODE_TABLE_DELTA; 715 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1), 716 M_DEVBUF, M_WAITOK); 717 #if VESA_DEBUG > 1 718 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 719 modes, vesa_vmode_max); 720 #endif 721 if (modes > 0) { 722 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 723 free(vesa_vmode, M_DEVBUF); 724 } 725 vesa_vmode = p; 726 } 727 728 #if VESA_DEBUG > 1 729 printf("Found VESA %s mode: %d x %d x %d bpp\n", 730 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 731 vmode.v_width, vmode.v_height, vmode.v_bpp); 732 #endif 733 if (is_via_cle266) { 734 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 735 vmode.v_width &= 0xff; 736 vmode.v_waseg = 0xb8000 >> 4; 737 } 738 } 739 740 /* copy some fields */ 741 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 742 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 743 vesa_vmode[modes].vi_width = vmode.v_width; 744 vesa_vmode[modes].vi_height = vmode.v_height; 745 vesa_vmode[modes].vi_depth = vmode.v_bpp; 746 vesa_vmode[modes].vi_planes = vmode.v_planes; 747 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 748 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 749 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4; 750 /* XXX window B */ 751 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024; 752 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024; 753 if (vmode.v_modeattr & V_MODELFB) 754 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 755 else 756 vesa_vmode[modes].vi_buffer = 0; 757 /* XXX */ 758 vesa_vmode[modes].vi_buffer_size 759 = vesa_adp_info->v_memsize*64*1024; 760 #if 0 761 if (vmode.v_offscreen > vmode.v_lfb) 762 vesa_vmode[modes].vi_buffer_size 763 = vmode.v_offscreen + vmode.v_offscreensize*1024 764 - vmode.v_lfb; 765 else 766 vesa_vmode[modes].vi_buffer_size 767 = vmode.v_offscreen + vmode.v_offscreensize*1024 768 #endif 769 vesa_vmode[modes].vi_mem_model 770 = vesa_translate_mmodel(vmode.v_memmodel); 771 vesa_vmode[modes].vi_pixel_fields[0] = 0; 772 vesa_vmode[modes].vi_pixel_fields[1] = 0; 773 vesa_vmode[modes].vi_pixel_fields[2] = 0; 774 vesa_vmode[modes].vi_pixel_fields[3] = 0; 775 vesa_vmode[modes].vi_pixel_fsizes[0] = 0; 776 vesa_vmode[modes].vi_pixel_fsizes[1] = 0; 777 vesa_vmode[modes].vi_pixel_fsizes[2] = 0; 778 vesa_vmode[modes].vi_pixel_fsizes[3] = 0; 779 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) { 780 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 781 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) { 782 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 783 vesa_vmode[modes].vi_pixel_fields[0] 784 = vmode.v_redfieldpos; 785 vesa_vmode[modes].vi_pixel_fields[1] 786 = vmode.v_greenfieldpos; 787 vesa_vmode[modes].vi_pixel_fields[2] 788 = vmode.v_bluefieldpos; 789 vesa_vmode[modes].vi_pixel_fields[3] 790 = vmode.v_resfieldpos; 791 vesa_vmode[modes].vi_pixel_fsizes[0] 792 = vmode.v_redmasksize; 793 vesa_vmode[modes].vi_pixel_fsizes[1] 794 = vmode.v_greenmasksize; 795 vesa_vmode[modes].vi_pixel_fsizes[2] 796 = vmode.v_bluemasksize; 797 vesa_vmode[modes].vi_pixel_fsizes[3] 798 = vmode.v_resmasksize; 799 } else { 800 vesa_vmode[modes].vi_pixel_size = 0; 801 } 802 803 vesa_vmode[modes].vi_flags 804 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 805 ++modes; 806 } 807 vesa_vmode[modes].vi_mode = EOT; 808 if (bootverbose) 809 printf("VESA: %d mode(s) found\n", modes); 810 811 has_vesa_bios = (modes > 0); 812 if (!has_vesa_bios) 813 return (1); 814 815 return (0); 816 } 817 818 static void 819 vesa_clear_modes(video_info_t *info, int color) 820 { 821 while (info->vi_mode != EOT) { 822 if ((info->vi_flags & V_INFO_COLOR) != color) 823 info->vi_mode = NA; 824 ++info; 825 } 826 } 827 828 static vm_offset_t 829 vesa_map_buffer(u_int paddr, size_t size) 830 { 831 vm_offset_t vaddr; 832 u_int off; 833 834 off = paddr - trunc_page(paddr); 835 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off); 836 #if VESA_DEBUG > 1 837 printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n", 838 paddr, vaddr, size, off); 839 #endif 840 return (vaddr + off); 841 } 842 843 static void 844 vesa_unmap_buffer(vm_offset_t vaddr, size_t size) 845 { 846 #if VESA_DEBUG > 1 847 printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size); 848 #endif 849 kmem_free(kernel_map, vaddr, size); 850 } 851 852 /* entry points */ 853 854 static int 855 vesa_configure(int flags) 856 { 857 video_adapter_t *adp; 858 int adapters; 859 int error; 860 int i; 861 862 if (vesa_init_done) 863 return 0; 864 if (flags & VIO_PROBE_ONLY) 865 return 0; /* XXX */ 866 867 /* 868 * If the VESA module has already been loaded, abort loading 869 * the module this time. 870 */ 871 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 872 if (adp->va_flags & V_ADP_VESA) 873 return ENXIO; 874 if (adp->va_type == KD_VGA) 875 break; 876 } 877 /* 878 * The VGA adapter is not found. This is because either 879 * 1) the VGA driver has not been initialized, or 2) the VGA card 880 * is not present. If 1) is the case, we shall defer 881 * initialization for now and try again later. 882 */ 883 if (adp == NULL) { 884 vga_sub_configure = vesa_configure; 885 return ENODEV; 886 } 887 888 /* count number of registered adapters */ 889 for (++i; vid_get_adapter(i) != NULL; ++i) 890 ; 891 adapters = i; 892 893 /* call VESA BIOS */ 894 vesa_adp = adp; 895 if (vesa_bios_init()) { 896 vesa_adp = NULL; 897 return ENXIO; 898 } 899 vesa_adp->va_flags |= V_ADP_VESA; 900 901 /* remove conflicting modes if we have more than one adapter */ 902 if (adapters > 1) { 903 vesa_clear_modes(vesa_vmode, 904 (vesa_adp->va_flags & V_ADP_COLOR) ? 905 V_INFO_COLOR : 0); 906 } 907 908 if ((error = vesa_load_ioctl()) == 0) { 909 prevvidsw = vidsw[vesa_adp->va_index]; 910 vidsw[vesa_adp->va_index] = &vesavidsw; 911 vesa_init_done = TRUE; 912 } else { 913 vesa_adp = NULL; 914 return error; 915 } 916 917 return 0; 918 } 919 920 #if 0 921 static int 922 vesa_nop(void) 923 { 924 return 0; 925 } 926 #endif 927 928 static int 929 vesa_error(void) 930 { 931 return 1; 932 } 933 934 static int 935 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 936 { 937 return (*prevvidsw->probe)(unit, adpp, arg, flags); 938 } 939 940 static int 941 vesa_init(int unit, video_adapter_t *adp, int flags) 942 { 943 return (*prevvidsw->init)(unit, adp, flags); 944 } 945 946 static int 947 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 948 { 949 int i; 950 951 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 952 return 0; 953 954 if (adp != vesa_adp) 955 return 1; 956 957 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 958 vesa_adp->va_flags & V_ADP_COLOR, mode); 959 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 960 if (vesa_vmode[i].vi_mode == NA) 961 continue; 962 if (vesa_vmode[i].vi_mode == mode) { 963 *info = vesa_vmode[i]; 964 return 0; 965 } 966 } 967 return 1; 968 } 969 970 static int 971 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 972 { 973 int i; 974 975 if ((*prevvidsw->query_mode)(adp, info) == 0) 976 return 0; 977 if (adp != vesa_adp) 978 return ENODEV; 979 980 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 981 if ((info->vi_width != 0) 982 && (info->vi_width != vesa_vmode[i].vi_width)) 983 continue; 984 if ((info->vi_height != 0) 985 && (info->vi_height != vesa_vmode[i].vi_height)) 986 continue; 987 if ((info->vi_cwidth != 0) 988 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 989 continue; 990 if ((info->vi_cheight != 0) 991 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 992 continue; 993 if ((info->vi_depth != 0) 994 && (info->vi_depth != vesa_vmode[i].vi_depth)) 995 continue; 996 if ((info->vi_planes != 0) 997 && (info->vi_planes != vesa_vmode[i].vi_planes)) 998 continue; 999 /* pixel format, memory model */ 1000 if ((info->vi_flags != 0) 1001 && (info->vi_flags != vesa_vmode[i].vi_flags)) 1002 continue; 1003 *info = vesa_vmode[i]; 1004 return 0; 1005 } 1006 return ENODEV; 1007 } 1008 1009 static int 1010 vesa_set_mode(video_adapter_t *adp, int mode) 1011 { 1012 video_info_t info; 1013 int len; 1014 1015 if (adp != vesa_adp) 1016 return (*prevvidsw->set_mode)(adp, mode); 1017 1018 mode = vesa_map_gen_mode_num(adp->va_type, 1019 adp->va_flags & V_ADP_COLOR, mode); 1020 #if VESA_DEBUG > 0 1021 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1022 adp->va_mode, adp->va_mode, mode, mode); 1023 #endif 1024 /* 1025 * If the current mode is a VESA mode and the new mode is not, 1026 * restore the state of the adapter first by setting one of the 1027 * standard VGA mode, so that non-standard, extended SVGA registers 1028 * are set to the state compatible with the standard VGA modes. 1029 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1030 * the new mode correctly. 1031 */ 1032 if (VESA_MODE(adp->va_mode)) { 1033 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) { 1034 int10_set_mode(adp->va_initial_bios_mode); 1035 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1036 vesa_unmap_buffer(adp->va_buffer, 1037 vesa_adp_info->v_memsize*64*1024); 1038 /* 1039 * Once (*prevvidsw->get_info)() succeeded, 1040 * (*prevvidsw->set_mode)() below won't fail... 1041 */ 1042 } 1043 } 1044 1045 /* we may not need to handle this mode after all... */ 1046 if ((*prevvidsw->set_mode)(adp, mode) == 0) 1047 return 0; 1048 1049 /* is the new mode supported? */ 1050 if (vesa_get_info(adp, mode, &info)) 1051 return 1; 1052 /* assert(VESA_MODE(mode)); */ 1053 1054 #if VESA_DEBUG > 0 1055 printf("VESA: about to set a VESA mode...\n"); 1056 #endif 1057 /* don't use the linear frame buffer for text modes. XXX */ 1058 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1059 info.vi_flags &= ~V_INFO_LINEAR; 1060 1061 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1062 return 1; 1063 1064 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1065 vesa_unmap_buffer(adp->va_buffer, 1066 vesa_adp_info->v_memsize*64*1024); 1067 1068 #if VESA_DEBUG > 0 1069 printf("VESA: mode set!\n"); 1070 #endif 1071 vesa_adp->va_mode = mode; 1072 vesa_adp->va_flags &= ~V_ADP_COLOR; 1073 vesa_adp->va_flags |= 1074 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1075 vesa_adp->va_crtc_addr = 1076 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1077 if (info.vi_flags & V_INFO_LINEAR) { 1078 #if VESA_DEBUG > 1 1079 printf("VESA: setting up LFB\n"); 1080 #endif 1081 vesa_adp->va_buffer = 1082 vesa_map_buffer(info.vi_buffer, 1083 vesa_adp_info->v_memsize*64*1024); 1084 vesa_adp->va_buffer_size = info.vi_buffer_size; 1085 vesa_adp->va_window = vesa_adp->va_buffer; 1086 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes; 1087 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes; 1088 } else { 1089 vesa_adp->va_buffer = 0; 1090 vesa_adp->va_buffer_size = info.vi_buffer_size; 1091 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window); 1092 vesa_adp->va_window_size = info.vi_window_size; 1093 vesa_adp->va_window_gran = info.vi_window_gran; 1094 } 1095 vesa_adp->va_window_orig = 0; 1096 len = vesa_bios_get_line_length(); 1097 if (len > 0) { 1098 vesa_adp->va_line_width = len; 1099 } else if (info.vi_flags & V_INFO_GRAPHICS) { 1100 switch (info.vi_depth/info.vi_planes) { 1101 case 1: 1102 vesa_adp->va_line_width = info.vi_width/8; 1103 break; 1104 case 2: 1105 vesa_adp->va_line_width = info.vi_width/4; 1106 break; 1107 case 4: 1108 vesa_adp->va_line_width = info.vi_width/2; 1109 break; 1110 case 8: 1111 default: /* shouldn't happen */ 1112 vesa_adp->va_line_width = info.vi_width; 1113 break; 1114 } 1115 } else { 1116 vesa_adp->va_line_width = info.vi_width; 1117 } 1118 vesa_adp->va_disp_start.x = 0; 1119 vesa_adp->va_disp_start.y = 0; 1120 #if VESA_DEBUG > 0 1121 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n", 1122 info.vi_width, len, vesa_adp->va_line_width); 1123 #endif 1124 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1125 1126 /* move hardware cursor out of the way */ 1127 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1128 1129 return 0; 1130 } 1131 1132 static int 1133 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1134 u_char *data, int ch, int count) 1135 { 1136 return (*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data, 1137 ch, count); 1138 } 1139 1140 static int 1141 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth, 1142 u_char *data, int ch, int count) 1143 { 1144 return (*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data, 1145 ch, count); 1146 } 1147 1148 static int 1149 vesa_show_font(video_adapter_t *adp, int page) 1150 { 1151 return (*prevvidsw->show_font)(adp, page); 1152 } 1153 1154 static int 1155 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1156 { 1157 int bits; 1158 int error; 1159 1160 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1161 && VESA_MODE(adp->va_mode)) { 1162 bits = vesa_bios_get_dac(); 1163 error = vesa_bios_save_palette(0, 256, palette, bits); 1164 if (error == 0) 1165 return 0; 1166 if (bits != 6) 1167 return error; 1168 } 1169 1170 return (*prevvidsw->save_palette)(adp, palette); 1171 } 1172 1173 static int 1174 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1175 { 1176 #if notyet 1177 int bits; 1178 int error; 1179 1180 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1181 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) { 1182 error = vesa_bios_load_palette(0, 256, palette, bits); 1183 if (error == 0) 1184 return 0; 1185 if (vesa_bios_set_dac(6) != 6) 1186 return 1; 1187 } 1188 #endif /* notyet */ 1189 1190 return (*prevvidsw->load_palette)(adp, palette); 1191 } 1192 1193 static int 1194 vesa_set_border(video_adapter_t *adp, int color) 1195 { 1196 return (*prevvidsw->set_border)(adp, color); 1197 } 1198 1199 static int 1200 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1201 { 1202 if (adp != vesa_adp) 1203 return (*prevvidsw->save_state)(adp, p, size); 1204 1205 if (vesa_state_buf_size == 0) 1206 vesa_state_buf_size = vesa_bios_state_buf_size(); 1207 if (size == 0) 1208 return (sizeof(int) + vesa_state_buf_size); 1209 else if (size < (sizeof(int) + vesa_state_buf_size)) 1210 return 1; 1211 1212 ((adp_state_t *)p)->sig = V_STATE_SIG; 1213 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1214 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1215 vesa_state_buf_size); 1216 } 1217 1218 static int 1219 vesa_load_state(video_adapter_t *adp, void *p) 1220 { 1221 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1222 return (*prevvidsw->load_state)(adp, p); 1223 1224 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1225 vesa_state_buf_size); 1226 } 1227 1228 #if 0 1229 static int 1230 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1231 { 1232 struct vm86frame vmf; 1233 int err; 1234 1235 bzero(&vmf, sizeof(vmf)); 1236 vmf.vmf_eax = 0x4f05; 1237 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */ 1238 err = vm86_intcall(0x10, &vmf); 1239 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 1240 return 1; 1241 *offset = vmf.vmf_dx*adp->va_window_gran; 1242 return 0; 1243 } 1244 #endif 1245 1246 static int 1247 vesa_set_origin(video_adapter_t *adp, off_t offset) 1248 { 1249 struct vm86frame vmf; 1250 int err; 1251 1252 /* 1253 * This function should return as quickly as possible to 1254 * maintain good performance of the system. For this reason, 1255 * error checking is kept minimal and let the VESA BIOS to 1256 * detect error. 1257 */ 1258 if (adp != vesa_adp) 1259 return (*prevvidsw->set_win_org)(adp, offset); 1260 1261 /* if this is a linear frame buffer, do nothing */ 1262 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1263 return 0; 1264 /* XXX */ 1265 if (adp->va_window_gran == 0) 1266 return 1; 1267 1268 bzero(&vmf, sizeof(vmf)); 1269 vmf.vmf_eax = 0x4f05; 1270 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */ 1271 vmf.vmf_edx = offset/adp->va_window_gran; 1272 err = vm86_intcall(0x10, &vmf); 1273 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 1274 return 1; 1275 bzero(&vmf, sizeof(vmf)); 1276 vmf.vmf_eax = 0x4f05; 1277 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */ 1278 vmf.vmf_edx = offset/adp->va_window_gran; 1279 err = vm86_intcall(0x10, &vmf); 1280 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1281 return 0; /* XXX */ 1282 } 1283 1284 static int 1285 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1286 { 1287 return (*prevvidsw->read_hw_cursor)(adp, col, row); 1288 } 1289 1290 static int 1291 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1292 { 1293 return (*prevvidsw->set_hw_cursor)(adp, col, row); 1294 } 1295 1296 static int 1297 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1298 int celsize, int blink) 1299 { 1300 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1301 blink); 1302 } 1303 1304 static int 1305 vesa_blank_display(video_adapter_t *adp, int mode) 1306 { 1307 /* XXX: use VESA DPMS */ 1308 return (*prevvidsw->blank_display)(adp, mode); 1309 } 1310 1311 static int 1312 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1313 int prot) 1314 { 1315 #if VESA_DEBUG > 0 1316 printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n", 1317 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1318 #endif 1319 1320 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) { 1321 /* va_window_size == va_buffer_size/vi_planes */ 1322 /* XXX: is this correct? */ 1323 if (offset > adp->va_window_size - PAGE_SIZE) 1324 return -1; 1325 *paddr = adp->va_info.vi_buffer + offset; 1326 return 0; 1327 } else { 1328 return (*prevvidsw->mmap)(adp, offset, paddr, prot); 1329 } 1330 } 1331 1332 static int 1333 vesa_clear(video_adapter_t *adp) 1334 { 1335 return (*prevvidsw->clear)(adp); 1336 } 1337 1338 static int 1339 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1340 { 1341 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy); 1342 } 1343 1344 static int 1345 vesa_bitblt(video_adapter_t *adp,...) 1346 { 1347 /* FIXME */ 1348 return 1; 1349 } 1350 1351 static int 1352 get_palette(video_adapter_t *adp, int base, int count, 1353 u_char *red, u_char *green, u_char *blue, u_char *trans) 1354 { 1355 u_char *r; 1356 u_char *g; 1357 u_char *b; 1358 int bits; 1359 int error; 1360 1361 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256)) 1362 return 1; 1363 if ((base + count) > 256) 1364 return 1; 1365 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)) 1366 return 1; 1367 1368 bits = vesa_bios_get_dac(); 1369 if (bits <= 6) 1370 return 1; 1371 1372 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1373 g = r + count; 1374 b = g + count; 1375 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1376 if (error == 0) { 1377 copyout(r, red, count); 1378 copyout(g, green, count); 1379 copyout(b, blue, count); 1380 if (trans != NULL) { 1381 bzero(r, count); 1382 copyout(r, trans, count); 1383 } 1384 } 1385 free(r, M_DEVBUF); 1386 1387 /* if error && bits != 6 at this point, we are in in trouble... XXX */ 1388 return error; 1389 } 1390 1391 static int 1392 set_palette(video_adapter_t *adp, int base, int count, 1393 u_char *red, u_char *green, u_char *blue, u_char *trans) 1394 { 1395 return 1; 1396 #if notyet 1397 u_char *r; 1398 u_char *g; 1399 u_char *b; 1400 int bits; 1401 int error; 1402 1403 if ((base < 0) || (base >= 256) || (base + count > 256)) 1404 return 1; 1405 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode) 1406 || ((bits = vesa_bios_set_dac(8)) <= 6)) 1407 return 1; 1408 1409 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1410 g = r + count; 1411 b = g + count; 1412 copyin(red, r, count); 1413 copyin(green, g, count); 1414 copyin(blue, b, count); 1415 1416 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1417 free(r, M_DEVBUF); 1418 if (error == 0) 1419 return 0; 1420 1421 /* if the following call fails, we are in trouble... XXX */ 1422 vesa_bios_set_dac(6); 1423 return 1; 1424 #endif /* notyet */ 1425 } 1426 1427 static int 1428 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1429 { 1430 int bytes; 1431 1432 if (adp != vesa_adp) 1433 return (*prevvidsw->ioctl)(adp, cmd, arg); 1434 1435 switch (cmd) { 1436 case FBIO_SETWINORG: /* set frame buffer window origin */ 1437 if (!VESA_MODE(adp->va_mode)) 1438 return (*prevvidsw->ioctl)(adp, cmd, arg); 1439 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1440 1441 case FBIO_SETDISPSTART: /* set display start address */ 1442 if (!VESA_MODE(adp->va_mode)) 1443 return (*prevvidsw->ioctl)(adp, cmd, arg); 1444 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1445 ((video_display_start_t *)arg)->y)) 1446 return ENODEV; 1447 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1448 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1449 return 0; 1450 1451 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1452 if (!VESA_MODE(adp->va_mode)) 1453 return (*prevvidsw->ioctl)(adp, cmd, arg); 1454 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1455 return ENODEV; 1456 adp->va_line_width = bytes; 1457 #if VESA_DEBUG > 1 1458 printf("new line width:%d\n", adp->va_line_width); 1459 #endif 1460 return 0; 1461 1462 case FBIO_GETPALETTE: /* get color palette */ 1463 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1464 ((video_color_palette_t *)arg)->count, 1465 ((video_color_palette_t *)arg)->red, 1466 ((video_color_palette_t *)arg)->green, 1467 ((video_color_palette_t *)arg)->blue, 1468 ((video_color_palette_t *)arg)->transparent)) 1469 return (*prevvidsw->ioctl)(adp, cmd, arg); 1470 return 0; 1471 1472 1473 case FBIO_SETPALETTE: /* set color palette */ 1474 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1475 ((video_color_palette_t *)arg)->count, 1476 ((video_color_palette_t *)arg)->red, 1477 ((video_color_palette_t *)arg)->green, 1478 ((video_color_palette_t *)arg)->blue, 1479 ((video_color_palette_t *)arg)->transparent)) 1480 return (*prevvidsw->ioctl)(adp, cmd, arg); 1481 return 0; 1482 1483 case FBIOGETCMAP: /* get color palette */ 1484 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1485 ((struct fbcmap *)arg)->count, 1486 ((struct fbcmap *)arg)->red, 1487 ((struct fbcmap *)arg)->green, 1488 ((struct fbcmap *)arg)->blue, NULL)) 1489 return (*prevvidsw->ioctl)(adp, cmd, arg); 1490 return 0; 1491 1492 case FBIOPUTCMAP: /* set color palette */ 1493 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1494 ((struct fbcmap *)arg)->count, 1495 ((struct fbcmap *)arg)->red, 1496 ((struct fbcmap *)arg)->green, 1497 ((struct fbcmap *)arg)->blue, NULL)) 1498 return (*prevvidsw->ioctl)(adp, cmd, arg); 1499 return 0; 1500 1501 default: 1502 return (*prevvidsw->ioctl)(adp, cmd, arg); 1503 } 1504 } 1505 1506 static int 1507 vesa_diag(video_adapter_t *adp, int level) 1508 { 1509 int error; 1510 1511 /* call the previous handler first */ 1512 error = (*prevvidsw->diag)(adp, level); 1513 if (error) 1514 return error; 1515 1516 if (adp != vesa_adp) 1517 return 1; 1518 1519 if (level <= 0) 1520 return 0; 1521 1522 return 0; 1523 } 1524 1525 static int 1526 vesa_bios_info(int level) 1527 { 1528 #if VESA_DEBUG > 1 1529 struct vesa_mode vmode; 1530 int i; 1531 #endif 1532 1533 if (bootverbose) { 1534 /* general adapter information */ 1535 printf( 1536 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1537 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 + 1538 ((vesa_adp_info->v_version & 0x0f00) >> 8), 1539 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 + 1540 (vesa_adp_info->v_version & 0x000f), 1541 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1542 vesa_vmodetab, vesa_adp_info->v_modetable); 1543 1544 /* OEM string */ 1545 if (vesa_oemstr != NULL) 1546 printf("VESA: %s\n", vesa_oemstr); 1547 } 1548 1549 if (level <= 0) 1550 return 0; 1551 1552 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) { 1553 /* vender name, product name, product revision */ 1554 printf("VESA: %s %s %s\n", 1555 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1556 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1557 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1558 } 1559 1560 #if VESA_DEBUG > 1 1561 /* mode information */ 1562 for (i = 0; 1563 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1564 && (vesa_vmodetab[i] != 0xffff); ++i) { 1565 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1566 continue; 1567 1568 /* print something for diagnostic purpose */ 1569 printf("VESA: mode:0x%03x, flags:0x%04x", 1570 vesa_vmodetab[i], vmode.v_modeattr); 1571 if (vmode.v_modeattr & V_MODEOPTINFO) { 1572 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1573 printf(", G %dx%dx%d %d, ", 1574 vmode.v_width, vmode.v_height, 1575 vmode.v_bpp, vmode.v_planes); 1576 } else { 1577 printf(", T %dx%d, ", 1578 vmode.v_width, vmode.v_height); 1579 } 1580 printf("font:%dx%d, ", 1581 vmode.v_cwidth, vmode.v_cheight); 1582 printf("pages:%d, mem:%d", 1583 vmode.v_ipages + 1, vmode.v_memmodel); 1584 } 1585 if (vmode.v_modeattr & V_MODELFB) { 1586 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1587 vmode.v_lfb, vmode.v_offscreen, 1588 vmode.v_offscreensize*1024); 1589 } 1590 printf("\n"); 1591 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1592 vmode.v_waseg, vmode.v_waattr, 1593 vmode.v_wbseg, vmode.v_wbattr); 1594 printf("size:%dk, gran:%dk\n", 1595 vmode.v_wsize, vmode.v_wgran); 1596 } 1597 #endif /* VESA_DEBUG > 1 */ 1598 1599 return 0; 1600 } 1601 1602 /* module loading */ 1603 1604 static int 1605 vesa_load(void) 1606 { 1607 int error; 1608 int s; 1609 1610 if (vesa_init_done) 1611 return 0; 1612 1613 /* locate a VGA adapter */ 1614 s = spltty(); 1615 vesa_adp = NULL; 1616 error = vesa_configure(0); 1617 splx(s); 1618 1619 if (error == 0) 1620 vesa_bios_info(bootverbose); 1621 1622 return error; 1623 } 1624 1625 static int 1626 vesa_unload(void) 1627 { 1628 u_char palette[256*3]; 1629 int error; 1630 int bits; 1631 int s; 1632 1633 /* if the adapter is currently in a VESA mode, don't unload */ 1634 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1635 return EBUSY; 1636 /* 1637 * FIXME: if there is at least one vty which is in a VESA mode, 1638 * we shouldn't be unloading! XXX 1639 */ 1640 1641 s = spltty(); 1642 if ((error = vesa_unload_ioctl()) == 0) { 1643 if (vesa_adp != NULL) { 1644 if (vesa_adp_info->v_flags & V_DAC8) { 1645 bits = vesa_bios_get_dac(); 1646 if (bits > 6) { 1647 vesa_bios_save_palette(0, 256, 1648 palette, bits); 1649 vesa_bios_set_dac(6); 1650 vesa_bios_load_palette(0, 256, 1651 palette, 6); 1652 } 1653 } 1654 vesa_adp->va_flags &= ~V_ADP_VESA; 1655 vidsw[vesa_adp->va_index] = prevvidsw; 1656 } 1657 } 1658 splx(s); 1659 1660 if (vesa_vm86_buf != NULL) 1661 free(vesa_vm86_buf, M_DEVBUF); 1662 1663 return error; 1664 } 1665 1666 static int 1667 vesa_mod_event(module_t mod, int type, void *data) 1668 { 1669 switch (type) { 1670 case MOD_LOAD: 1671 return vesa_load(); 1672 case MOD_UNLOAD: 1673 return vesa_unload(); 1674 default: 1675 return EOPNOTSUPP; 1676 } 1677 return 0; 1678 } 1679 1680 static moduledata_t vesa_mod = { 1681 "vesa", 1682 vesa_mod_event, 1683 NULL, 1684 }; 1685 1686 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1687 1688 #endif /* VGA_NO_MODE_CHANGE */
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