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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/5.3/sys/i386/isa/vesa.c 132199 2004-07-15 08:26:07Z phk $"); 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 80 /* VESA functions */ 81 #if 0 82 static int vesa_nop(void); 83 #endif 84 static int vesa_error(void); 85 static vi_probe_t vesa_probe; 86 static vi_init_t vesa_init; 87 static vi_get_info_t vesa_get_info; 88 static vi_query_mode_t vesa_query_mode; 89 static vi_set_mode_t vesa_set_mode; 90 static vi_save_font_t vesa_save_font; 91 static vi_load_font_t vesa_load_font; 92 static vi_show_font_t vesa_show_font; 93 static vi_save_palette_t vesa_save_palette; 94 static vi_load_palette_t vesa_load_palette; 95 static vi_set_border_t vesa_set_border; 96 static vi_save_state_t vesa_save_state; 97 static vi_load_state_t vesa_load_state; 98 static vi_set_win_org_t vesa_set_origin; 99 static vi_read_hw_cursor_t vesa_read_hw_cursor; 100 static vi_set_hw_cursor_t vesa_set_hw_cursor; 101 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 102 static vi_blank_display_t vesa_blank_display; 103 static vi_mmap_t vesa_mmap; 104 static vi_ioctl_t vesa_ioctl; 105 static vi_clear_t vesa_clear; 106 static vi_fill_rect_t vesa_fill_rect; 107 static vi_bitblt_t vesa_bitblt; 108 static vi_diag_t vesa_diag; 109 static int vesa_bios_info(int level); 110 static struct vm86context vesa_vmcontext; 111 112 static video_switch_t vesavidsw = { 113 vesa_probe, 114 vesa_init, 115 vesa_get_info, 116 vesa_query_mode, 117 vesa_set_mode, 118 vesa_save_font, 119 vesa_load_font, 120 vesa_show_font, 121 vesa_save_palette, 122 vesa_load_palette, 123 vesa_set_border, 124 vesa_save_state, 125 vesa_load_state, 126 vesa_set_origin, 127 vesa_read_hw_cursor, 128 vesa_set_hw_cursor, 129 vesa_set_hw_cursor_shape, 130 vesa_blank_display, 131 vesa_mmap, 132 vesa_ioctl, 133 vesa_clear, 134 vesa_fill_rect, 135 vesa_bitblt, 136 vesa_error, 137 vesa_error, 138 vesa_diag, 139 }; 140 141 static video_switch_t *prevvidsw; 142 143 /* VESA BIOS video modes */ 144 #define VESA_MAXMODES 64 145 #define EOT (-1) 146 #define NA (-2) 147 148 #define MODE_TABLE_DELTA 8 149 150 static int vesa_vmode_max = 0; 151 static video_info_t vesa_vmode_empty = { EOT }; 152 static video_info_t *vesa_vmode = &vesa_vmode_empty; 153 154 static int vesa_init_done = FALSE; 155 static int has_vesa_bios = FALSE; 156 static struct vesa_info *vesa_adp_info = NULL; 157 static u_int16_t *vesa_vmodetab = NULL; 158 static char *vesa_oemstr = NULL; 159 static char *vesa_venderstr = NULL; 160 static char *vesa_prodstr = NULL; 161 static char *vesa_revstr = NULL; 162 163 /* local macros and functions */ 164 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 165 166 static int int10_set_mode(int mode); 167 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 168 static int vesa_bios_set_mode(int mode); 169 static int vesa_bios_get_dac(void); 170 static int vesa_bios_set_dac(int bits); 171 static int vesa_bios_save_palette(int start, int colors, u_char *palette, 172 int bits); 173 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 174 u_char *b, int bits); 175 static int vesa_bios_load_palette(int start, int colors, u_char *palette, 176 int bits); 177 #ifdef notyet 178 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 179 u_char *b, int bits); 180 #endif 181 #define STATE_SIZE 0 182 #define STATE_SAVE 1 183 #define STATE_LOAD 2 184 #define STATE_HW (1<<0) 185 #define STATE_DATA (1<<1) 186 #define STATE_DAC (1<<2) 187 #define STATE_REG (1<<3) 188 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 189 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 190 static int vesa_bios_state_buf_size(void); 191 static int vesa_bios_save_restore(int code, void *p, size_t size); 192 static int vesa_bios_get_line_length(void); 193 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 194 #if 0 195 static int vesa_bios_get_start(int *x, int *y); 196 #endif 197 static int vesa_bios_set_start(int x, int y); 198 static int vesa_map_gen_mode_num(int type, int color, int mode); 199 static int vesa_translate_flags(u_int16_t vflags); 200 static int vesa_translate_mmodel(u_int8_t vmodel); 201 static void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, 202 u_char *buf); 203 static int vesa_bios_init(void); 204 static void vesa_clear_modes(video_info_t *info, int color); 205 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size); 206 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size); 207 208 #if 0 209 static int vesa_get_origin(video_adapter_t *adp, off_t *offset); 210 #endif 211 212 static void 213 dump_buffer(u_char *buf, size_t len) 214 { 215 int i; 216 217 for(i = 0; i < len;) { 218 printf("%02x ", buf[i]); 219 if ((++i % 16) == 0) 220 printf("\n"); 221 } 222 } 223 224 /* INT 10 BIOS calls */ 225 static int 226 int10_set_mode(int mode) 227 { 228 struct vm86frame vmf; 229 230 bzero(&vmf, sizeof(vmf)); 231 vmf.vmf_eax = 0x0000 | mode; 232 vm86_intcall(0x10, &vmf); 233 return 0; 234 } 235 236 /* VESA BIOS calls */ 237 static int 238 vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 239 { 240 struct vm86frame vmf; 241 u_char *buf; 242 int err; 243 244 bzero(&vmf, sizeof(vmf)); 245 vmf.vmf_eax = 0x4f01; 246 vmf.vmf_ecx = mode; 247 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 248 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di); 249 250 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 251 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 252 return 1; 253 bcopy(buf, vmode, sizeof(*vmode)); 254 return 0; 255 } 256 257 static int 258 vesa_bios_set_mode(int mode) 259 { 260 struct vm86frame vmf; 261 int err; 262 263 bzero(&vmf, sizeof(vmf)); 264 vmf.vmf_eax = 0x4f02; 265 vmf.vmf_ebx = mode; 266 err = vm86_intcall(0x10, &vmf); 267 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 268 } 269 270 static int 271 vesa_bios_get_dac(void) 272 { 273 struct vm86frame vmf; 274 int err; 275 276 bzero(&vmf, sizeof(vmf)); 277 vmf.vmf_eax = 0x4f08; 278 vmf.vmf_ebx = 1; /* get DAC width */ 279 err = vm86_intcall(0x10, &vmf); 280 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 281 return 6; /* XXX */ 282 return ((vmf.vmf_ebx >> 8) & 0x00ff); 283 } 284 285 static int 286 vesa_bios_set_dac(int bits) 287 { 288 struct vm86frame vmf; 289 int err; 290 291 bzero(&vmf, sizeof(vmf)); 292 vmf.vmf_eax = 0x4f08; 293 vmf.vmf_ebx = (bits << 8); 294 err = vm86_intcall(0x10, &vmf); 295 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 296 return 6; /* XXX */ 297 return ((vmf.vmf_ebx >> 8) & 0x00ff); 298 } 299 300 static int 301 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 302 { 303 struct vm86frame vmf; 304 u_char *p; 305 int err; 306 int i; 307 308 bzero(&vmf, sizeof(vmf)); 309 vmf.vmf_eax = 0x4f09; 310 vmf.vmf_ebx = 1; /* get primary palette data */ 311 vmf.vmf_ecx = colors; 312 vmf.vmf_edx = start; 313 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 314 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 315 316 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 317 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 318 return 1; 319 320 bits = 8 - bits; 321 for (i = 0; i < colors; ++i) { 322 palette[i*3] = p[i*4 + 2] << bits; 323 palette[i*3 + 1] = p[i*4 + 1] << bits; 324 palette[i*3 + 2] = p[i*4] << bits; 325 } 326 return 0; 327 } 328 329 static int 330 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 331 int bits) 332 { 333 struct vm86frame vmf; 334 u_char *p; 335 int err; 336 int i; 337 338 bzero(&vmf, sizeof(vmf)); 339 vmf.vmf_eax = 0x4f09; 340 vmf.vmf_ebx = 1; /* get primary palette data */ 341 vmf.vmf_ecx = colors; 342 vmf.vmf_edx = start; 343 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 344 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 345 346 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 347 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 348 return 1; 349 350 bits = 8 - bits; 351 for (i = 0; i < colors; ++i) { 352 r[i] = p[i*4 + 2] << bits; 353 g[i] = p[i*4 + 1] << bits; 354 b[i] = p[i*4] << bits; 355 } 356 return 0; 357 } 358 359 static int 360 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 361 { 362 struct vm86frame vmf; 363 u_char *p; 364 int err; 365 int i; 366 367 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 368 bits = 8 - bits; 369 for (i = 0; i < colors; ++i) { 370 p[i*4] = palette[i*3 + 2] >> bits; 371 p[i*4 + 1] = palette[i*3 + 1] >> bits; 372 p[i*4 + 2] = palette[i*3] >> bits; 373 p[i*4 + 3] = 0; 374 } 375 376 bzero(&vmf, sizeof(vmf)); 377 vmf.vmf_eax = 0x4f09; 378 vmf.vmf_ebx = 0; /* set primary palette data */ 379 vmf.vmf_ecx = colors; 380 vmf.vmf_edx = start; 381 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 382 383 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 384 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 385 } 386 387 #ifdef notyet 388 static int 389 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 390 int bits) 391 { 392 struct vm86frame vmf; 393 u_char *p; 394 int err; 395 int i; 396 397 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 398 bits = 8 - bits; 399 for (i = 0; i < colors; ++i) { 400 p[i*4] = b[i] >> bits; 401 p[i*4 + 1] = g[i] >> bits; 402 p[i*4 + 2] = r[i] >> bits; 403 p[i*4 + 3] = 0; 404 } 405 406 bzero(&vmf, sizeof(vmf)); 407 vmf.vmf_eax = 0x4f09; 408 vmf.vmf_ebx = 0; /* set primary palette data */ 409 vmf.vmf_ecx = colors; 410 vmf.vmf_edx = start; 411 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 412 413 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 414 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 415 } 416 #endif 417 418 static int 419 vesa_bios_state_buf_size(void) 420 { 421 struct vm86frame vmf; 422 int err; 423 424 bzero(&vmf, sizeof(vmf)); 425 vmf.vmf_eax = 0x4f04; 426 vmf.vmf_ecx = STATE_MOST; 427 vmf.vmf_edx = STATE_SIZE; 428 err = vm86_intcall(0x10, &vmf); 429 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 430 return 0; 431 return vmf.vmf_bx*64; 432 } 433 434 static int 435 vesa_bios_save_restore(int code, void *p, size_t size) 436 { 437 struct vm86frame vmf; 438 u_char *buf; 439 int err; 440 441 bzero(&vmf, sizeof(vmf)); 442 vmf.vmf_eax = 0x4f04; 443 vmf.vmf_ecx = STATE_MOST; 444 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */ 445 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 446 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_bx); 447 bcopy(p, buf, size); 448 449 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 450 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 451 } 452 453 static int 454 vesa_bios_get_line_length(void) 455 { 456 struct vm86frame vmf; 457 int err; 458 459 bzero(&vmf, sizeof(vmf)); 460 vmf.vmf_eax = 0x4f06; 461 vmf.vmf_ebx = 1; /* get scan line length */ 462 err = vm86_intcall(0x10, &vmf); 463 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 464 return -1; 465 return vmf.vmf_bx; /* line length in bytes */ 466 } 467 468 static int 469 vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 470 { 471 struct vm86frame vmf; 472 int err; 473 474 bzero(&vmf, sizeof(vmf)); 475 vmf.vmf_eax = 0x4f06; 476 vmf.vmf_ebx = 0; /* set scan line length in pixel */ 477 vmf.vmf_ecx = pixel; 478 err = vm86_intcall(0x10, &vmf); 479 #if VESA_DEBUG > 1 480 printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx); 481 #endif 482 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 483 return 1; 484 if (bytes) 485 *bytes = vmf.vmf_bx; 486 if (lines) 487 *lines = vmf.vmf_dx; 488 return 0; 489 } 490 491 #if 0 492 static int 493 vesa_bios_get_start(int *x, int *y) 494 { 495 struct vm86frame vmf; 496 int err; 497 498 bzero(&vmf, sizeof(vmf)); 499 vmf.vmf_eax = 0x4f07; 500 vmf.vmf_ebx = 1; /* get display start */ 501 err = vm86_intcall(0x10, &vmf); 502 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 503 return 1; 504 *x = vmf.vmf_cx; 505 *y = vmf.vmf_dx; 506 return 0; 507 } 508 #endif 509 510 static int 511 vesa_bios_set_start(int x, int y) 512 { 513 struct vm86frame vmf; 514 int err; 515 516 bzero(&vmf, sizeof(vmf)); 517 vmf.vmf_eax = 0x4f07; 518 vmf.vmf_ebx = 0x80; /* set display start */ 519 vmf.vmf_edx = y; 520 vmf.vmf_ecx = x; 521 err = vm86_intcall(0x10, &vmf); 522 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 523 } 524 525 /* map a generic video mode to a known mode */ 526 static int 527 vesa_map_gen_mode_num(int type, int color, int mode) 528 { 529 static struct { 530 int from; 531 int to; 532 } mode_map[] = { 533 { M_TEXT_132x25, M_VESA_C132x25 }, 534 { M_TEXT_132x43, M_VESA_C132x43 }, 535 { M_TEXT_132x50, M_VESA_C132x50 }, 536 { M_TEXT_132x60, M_VESA_C132x60 }, 537 }; 538 int i; 539 540 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 541 if (mode_map[i].from == mode) 542 return mode_map[i].to; 543 } 544 return mode; 545 } 546 547 static int 548 vesa_translate_flags(u_int16_t vflags) 549 { 550 static struct { 551 u_int16_t mask; 552 int set; 553 int reset; 554 } ftable[] = { 555 { V_MODECOLOR, V_INFO_COLOR, 0 }, 556 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 557 { V_MODELFB, V_INFO_LINEAR, 0 }, 558 }; 559 int flags; 560 int i; 561 562 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 563 flags |= (vflags & ftable[i].mask) ? 564 ftable[i].set : ftable[i].reset; 565 } 566 return flags; 567 } 568 569 static int 570 vesa_translate_mmodel(u_int8_t vmodel) 571 { 572 static struct { 573 u_int8_t vmodel; 574 int mmodel; 575 } mtable[] = { 576 { V_MMTEXT, V_INFO_MM_TEXT }, 577 { V_MMCGA, V_INFO_MM_CGA }, 578 { V_MMHGC, V_INFO_MM_HGC }, 579 { V_MMEGA, V_INFO_MM_PLANAR }, 580 { V_MMPACKED, V_INFO_MM_PACKED }, 581 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 582 }; 583 int i; 584 585 for (i = 0; mtable[i].mmodel >= 0; ++i) { 586 if (mtable[i].vmodel == vmodel) 587 return mtable[i].mmodel; 588 } 589 return V_INFO_MM_OTHER; 590 } 591 592 static void 593 *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf) 594 { 595 if (p == 0) 596 return NULL; 597 if (((p >> 16) == seg) && ((p & 0xffff) >= off)) 598 return (void *)(buf + ((p & 0xffff) - off)); 599 else { 600 p = BIOS_SADDRTOLADDR(p); 601 return (void *)BIOS_PADDRTOVADDR(p); 602 } 603 } 604 605 static int 606 vesa_bios_init(void) 607 { 608 static u_char buf[512]; 609 struct vm86frame vmf; 610 struct vesa_mode vmode; 611 video_info_t *p; 612 u_char *vmbuf; 613 int is_via_cle266; 614 int modes; 615 int err; 616 int i; 617 618 if (vesa_init_done) 619 return 0; 620 621 has_vesa_bios = FALSE; 622 vesa_adp_info = NULL; 623 vesa_vmode_max = 0; 624 vesa_vmode[0].vi_mode = EOT; 625 626 vmbuf = (u_char *)vm86_addpage(&vesa_vmcontext, 1, 0); 627 bzero(&vmf, sizeof(vmf)); /* paranoia */ 628 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 629 vmf.vmf_eax = 0x4f00; 630 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di); 631 632 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 633 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4)) 634 return 1; 635 bcopy(vmbuf, buf, sizeof(buf)); 636 vesa_adp_info = (struct vesa_info *)buf; 637 if (bootverbose) { 638 printf("VESA: information block\n"); 639 dump_buffer(buf, 64); 640 } 641 if (vesa_adp_info->v_flags & V_NONVGA) 642 return 1; 643 if (vesa_adp_info->v_version < 0x0102) { 644 printf("VESA: VBE version %d.%d is not supported; " 645 "version 1.2 or later is required.\n", 646 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 647 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 648 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 649 + (vesa_adp_info->v_version & 0x000f)); 650 return 1; 651 } 652 653 /* fix string ptrs */ 654 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr, 655 vmf.vmf_es, vmf.vmf_di, buf); 656 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0; 657 658 if (vesa_adp_info->v_version >= 0x0200) { 659 vesa_venderstr = 660 (char *)vesa_fix_ptr(vesa_adp_info->v_venderstr, 661 vmf.vmf_es, vmf.vmf_di, buf); 662 vesa_prodstr = 663 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr, 664 vmf.vmf_es, vmf.vmf_di, buf); 665 vesa_revstr = 666 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr, 667 vmf.vmf_es, vmf.vmf_di, buf); 668 } 669 670 /* obtain video mode information */ 671 vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable, 672 vmf.vmf_es, vmf.vmf_di, buf); 673 if (vesa_vmodetab == NULL) 674 return 1; 675 for (i = 0, modes = 0; 676 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 677 && (vesa_vmodetab[i] != 0xffff); ++i) { 678 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 679 continue; 680 681 /* reject unsupported modes */ 682 #if 0 683 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO 684 | V_MODENONVGA)) 685 != (V_MODESUPP | V_MODEOPTINFO)) 686 continue; 687 #else 688 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) { 689 #if VESA_DEBUG > 1 690 printf( 691 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n", 692 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 693 vmode.v_width, vmode.v_height, vmode.v_bpp, 694 vmode.v_modeattr); 695 #endif 696 continue; 697 } 698 #endif 699 700 /* expand the array if necessary */ 701 if (modes >= vesa_vmode_max) { 702 vesa_vmode_max += MODE_TABLE_DELTA; 703 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1), 704 M_DEVBUF, M_WAITOK); 705 #if VESA_DEBUG > 1 706 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 707 modes, vesa_vmode_max); 708 #endif 709 if (modes > 0) { 710 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 711 free(vesa_vmode, M_DEVBUF); 712 } 713 vesa_vmode = p; 714 } 715 716 #if VESA_DEBUG > 1 717 printf("Found VESA %s mode: %d x %d x %d bpp\n", 718 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 719 vmode.v_width, vmode.v_height, vmode.v_bpp); 720 #endif 721 if (is_via_cle266) { 722 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) { 723 vmode.v_width &= 0xff; 724 vmode.v_waseg = 0xb8000 >> 4; 725 } 726 } 727 728 /* copy some fields */ 729 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 730 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 731 vesa_vmode[modes].vi_width = vmode.v_width; 732 vesa_vmode[modes].vi_height = vmode.v_height; 733 vesa_vmode[modes].vi_depth = vmode.v_bpp; 734 vesa_vmode[modes].vi_planes = vmode.v_planes; 735 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 736 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 737 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4; 738 /* XXX window B */ 739 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024; 740 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024; 741 if (vmode.v_modeattr & V_MODELFB) 742 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 743 else 744 vesa_vmode[modes].vi_buffer = 0; 745 /* XXX */ 746 vesa_vmode[modes].vi_buffer_size 747 = vesa_adp_info->v_memsize*64*1024; 748 #if 0 749 if (vmode.v_offscreen > vmode.v_lfb) 750 vesa_vmode[modes].vi_buffer_size 751 = vmode.v_offscreen + vmode.v_offscreensize*1024 752 - vmode.v_lfb; 753 else 754 vesa_vmode[modes].vi_buffer_size 755 = vmode.v_offscreen + vmode.v_offscreensize*1024 756 #endif 757 vesa_vmode[modes].vi_mem_model 758 = vesa_translate_mmodel(vmode.v_memmodel); 759 vesa_vmode[modes].vi_pixel_fields[0] = 0; 760 vesa_vmode[modes].vi_pixel_fields[1] = 0; 761 vesa_vmode[modes].vi_pixel_fields[2] = 0; 762 vesa_vmode[modes].vi_pixel_fields[3] = 0; 763 vesa_vmode[modes].vi_pixel_fsizes[0] = 0; 764 vesa_vmode[modes].vi_pixel_fsizes[1] = 0; 765 vesa_vmode[modes].vi_pixel_fsizes[2] = 0; 766 vesa_vmode[modes].vi_pixel_fsizes[3] = 0; 767 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) { 768 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 769 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) { 770 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 771 vesa_vmode[modes].vi_pixel_fields[0] 772 = vmode.v_redfieldpos; 773 vesa_vmode[modes].vi_pixel_fields[1] 774 = vmode.v_greenfieldpos; 775 vesa_vmode[modes].vi_pixel_fields[2] 776 = vmode.v_bluefieldpos; 777 vesa_vmode[modes].vi_pixel_fields[3] 778 = vmode.v_resfieldpos; 779 vesa_vmode[modes].vi_pixel_fsizes[0] 780 = vmode.v_redmasksize; 781 vesa_vmode[modes].vi_pixel_fsizes[1] 782 = vmode.v_greenmasksize; 783 vesa_vmode[modes].vi_pixel_fsizes[2] 784 = vmode.v_bluemasksize; 785 vesa_vmode[modes].vi_pixel_fsizes[3] 786 = vmode.v_resmasksize; 787 } else { 788 vesa_vmode[modes].vi_pixel_size = 0; 789 } 790 791 vesa_vmode[modes].vi_flags 792 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 793 ++modes; 794 } 795 vesa_vmode[modes].vi_mode = EOT; 796 if (bootverbose) 797 printf("VESA: %d mode(s) found\n", modes); 798 799 has_vesa_bios = (modes > 0); 800 return (has_vesa_bios ? 0 : 1); 801 } 802 803 static void 804 vesa_clear_modes(video_info_t *info, int color) 805 { 806 while (info->vi_mode != EOT) { 807 if ((info->vi_flags & V_INFO_COLOR) != color) 808 info->vi_mode = NA; 809 ++info; 810 } 811 } 812 813 static vm_offset_t 814 vesa_map_buffer(u_int paddr, size_t size) 815 { 816 vm_offset_t vaddr; 817 u_int off; 818 819 off = paddr - trunc_page(paddr); 820 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off); 821 #if VESA_DEBUG > 1 822 printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n", 823 paddr, vaddr, size, off); 824 #endif 825 return (vaddr + off); 826 } 827 828 static void 829 vesa_unmap_buffer(vm_offset_t vaddr, size_t size) 830 { 831 #if VESA_DEBUG > 1 832 printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size); 833 #endif 834 kmem_free(kernel_map, vaddr, size); 835 } 836 837 /* entry points */ 838 839 static int 840 vesa_configure(int flags) 841 { 842 video_adapter_t *adp; 843 int adapters; 844 int error; 845 int i; 846 847 if (vesa_init_done) 848 return 0; 849 if (flags & VIO_PROBE_ONLY) 850 return 0; /* XXX */ 851 852 /* 853 * If the VESA module has already been loaded, abort loading 854 * the module this time. 855 */ 856 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 857 if (adp->va_flags & V_ADP_VESA) 858 return ENXIO; 859 if (adp->va_type == KD_VGA) 860 break; 861 } 862 /* 863 * The VGA adapter is not found. This is because either 864 * 1) the VGA driver has not been initialized, or 2) the VGA card 865 * is not present. If 1) is the case, we shall defer 866 * initialization for now and try again later. 867 */ 868 if (adp == NULL) { 869 vga_sub_configure = vesa_configure; 870 return ENODEV; 871 } 872 873 /* count number of registered adapters */ 874 for (++i; vid_get_adapter(i) != NULL; ++i) 875 ; 876 adapters = i; 877 878 /* call VESA BIOS */ 879 vesa_adp = adp; 880 if (vesa_bios_init()) { 881 vesa_adp = NULL; 882 return ENXIO; 883 } 884 vesa_adp->va_flags |= V_ADP_VESA; 885 886 /* remove conflicting modes if we have more than one adapter */ 887 if (adapters > 1) { 888 vesa_clear_modes(vesa_vmode, 889 (vesa_adp->va_flags & V_ADP_COLOR) ? 890 V_INFO_COLOR : 0); 891 } 892 893 if ((error = vesa_load_ioctl()) == 0) { 894 prevvidsw = vidsw[vesa_adp->va_index]; 895 vidsw[vesa_adp->va_index] = &vesavidsw; 896 vesa_init_done = TRUE; 897 } else { 898 vesa_adp = NULL; 899 return error; 900 } 901 902 return 0; 903 } 904 905 #if 0 906 static int 907 vesa_nop(void) 908 { 909 return 0; 910 } 911 #endif 912 913 static int 914 vesa_error(void) 915 { 916 return 1; 917 } 918 919 static int 920 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 921 { 922 return (*prevvidsw->probe)(unit, adpp, arg, flags); 923 } 924 925 static int 926 vesa_init(int unit, video_adapter_t *adp, int flags) 927 { 928 return (*prevvidsw->init)(unit, adp, flags); 929 } 930 931 static int 932 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 933 { 934 int i; 935 936 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 937 return 0; 938 939 if (adp != vesa_adp) 940 return 1; 941 942 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 943 vesa_adp->va_flags & V_ADP_COLOR, mode); 944 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 945 if (vesa_vmode[i].vi_mode == NA) 946 continue; 947 if (vesa_vmode[i].vi_mode == mode) { 948 *info = vesa_vmode[i]; 949 return 0; 950 } 951 } 952 return 1; 953 } 954 955 static int 956 vesa_query_mode(video_adapter_t *adp, video_info_t *info) 957 { 958 int i; 959 960 if ((*prevvidsw->query_mode)(adp, info) == 0) 961 return 0; 962 if (adp != vesa_adp) 963 return ENODEV; 964 965 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 966 if ((info->vi_width != 0) 967 && (info->vi_width != vesa_vmode[i].vi_width)) 968 continue; 969 if ((info->vi_height != 0) 970 && (info->vi_height != vesa_vmode[i].vi_height)) 971 continue; 972 if ((info->vi_cwidth != 0) 973 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 974 continue; 975 if ((info->vi_cheight != 0) 976 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 977 continue; 978 if ((info->vi_depth != 0) 979 && (info->vi_depth != vesa_vmode[i].vi_depth)) 980 continue; 981 if ((info->vi_planes != 0) 982 && (info->vi_planes != vesa_vmode[i].vi_planes)) 983 continue; 984 /* pixel format, memory model */ 985 if ((info->vi_flags != 0) 986 && (info->vi_flags != vesa_vmode[i].vi_flags)) 987 continue; 988 *info = vesa_vmode[i]; 989 return 0; 990 } 991 return ENODEV; 992 } 993 994 static int 995 vesa_set_mode(video_adapter_t *adp, int mode) 996 { 997 video_info_t info; 998 int len; 999 1000 if (adp != vesa_adp) 1001 return (*prevvidsw->set_mode)(adp, mode); 1002 1003 mode = vesa_map_gen_mode_num(adp->va_type, 1004 adp->va_flags & V_ADP_COLOR, mode); 1005 #if VESA_DEBUG > 0 1006 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 1007 adp->va_mode, adp->va_mode, mode, mode); 1008 #endif 1009 /* 1010 * If the current mode is a VESA mode and the new mode is not, 1011 * restore the state of the adapter first by setting one of the 1012 * standard VGA mode, so that non-standard, extended SVGA registers 1013 * are set to the state compatible with the standard VGA modes. 1014 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1015 * the new mode correctly. 1016 */ 1017 if (VESA_MODE(adp->va_mode)) { 1018 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) { 1019 int10_set_mode(adp->va_initial_bios_mode); 1020 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1021 vesa_unmap_buffer(adp->va_buffer, 1022 vesa_adp_info->v_memsize*64*1024); 1023 /* 1024 * Once (*prevvidsw->get_info)() succeeded, 1025 * (*prevvidsw->set_mode)() below won't fail... 1026 */ 1027 } 1028 } 1029 1030 /* we may not need to handle this mode after all... */ 1031 if ((*prevvidsw->set_mode)(adp, mode) == 0) 1032 return 0; 1033 1034 /* is the new mode supported? */ 1035 if (vesa_get_info(adp, mode, &info)) 1036 return 1; 1037 /* assert(VESA_MODE(mode)); */ 1038 1039 #if VESA_DEBUG > 0 1040 printf("VESA: about to set a VESA mode...\n"); 1041 #endif 1042 /* don't use the linear frame buffer for text modes. XXX */ 1043 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1044 info.vi_flags &= ~V_INFO_LINEAR; 1045 1046 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1047 return 1; 1048 1049 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1050 vesa_unmap_buffer(adp->va_buffer, 1051 vesa_adp_info->v_memsize*64*1024); 1052 1053 #if VESA_DEBUG > 0 1054 printf("VESA: mode set!\n"); 1055 #endif 1056 vesa_adp->va_mode = mode; 1057 vesa_adp->va_flags &= ~V_ADP_COLOR; 1058 vesa_adp->va_flags |= 1059 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1060 vesa_adp->va_crtc_addr = 1061 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1062 if (info.vi_flags & V_INFO_LINEAR) { 1063 #if VESA_DEBUG > 1 1064 printf("VESA: setting up LFB\n"); 1065 #endif 1066 vesa_adp->va_buffer = 1067 vesa_map_buffer(info.vi_buffer, 1068 vesa_adp_info->v_memsize*64*1024); 1069 vesa_adp->va_buffer_size = info.vi_buffer_size; 1070 vesa_adp->va_window = vesa_adp->va_buffer; 1071 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes; 1072 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes; 1073 } else { 1074 vesa_adp->va_buffer = 0; 1075 vesa_adp->va_buffer_size = info.vi_buffer_size; 1076 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window); 1077 vesa_adp->va_window_size = info.vi_window_size; 1078 vesa_adp->va_window_gran = info.vi_window_gran; 1079 } 1080 vesa_adp->va_window_orig = 0; 1081 len = vesa_bios_get_line_length(); 1082 if (len > 0) { 1083 vesa_adp->va_line_width = len; 1084 } else if (info.vi_flags & V_INFO_GRAPHICS) { 1085 switch (info.vi_depth/info.vi_planes) { 1086 case 1: 1087 vesa_adp->va_line_width = info.vi_width/8; 1088 break; 1089 case 2: 1090 vesa_adp->va_line_width = info.vi_width/4; 1091 break; 1092 case 4: 1093 vesa_adp->va_line_width = info.vi_width/2; 1094 break; 1095 case 8: 1096 default: /* shouldn't happen */ 1097 vesa_adp->va_line_width = info.vi_width; 1098 break; 1099 } 1100 } else { 1101 vesa_adp->va_line_width = info.vi_width; 1102 } 1103 vesa_adp->va_disp_start.x = 0; 1104 vesa_adp->va_disp_start.y = 0; 1105 #if VESA_DEBUG > 0 1106 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n", 1107 info.vi_width, len, vesa_adp->va_line_width); 1108 #endif 1109 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1110 1111 /* move hardware cursor out of the way */ 1112 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1113 1114 return 0; 1115 } 1116 1117 static int 1118 vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1119 int ch, int count) 1120 { 1121 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count); 1122 } 1123 1124 static int 1125 vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1126 int ch, int count) 1127 { 1128 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count); 1129 } 1130 1131 static int 1132 vesa_show_font(video_adapter_t *adp, int page) 1133 { 1134 return (*prevvidsw->show_font)(adp, page); 1135 } 1136 1137 static int 1138 vesa_save_palette(video_adapter_t *adp, u_char *palette) 1139 { 1140 int bits; 1141 int error; 1142 1143 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1144 && VESA_MODE(adp->va_mode)) { 1145 bits = vesa_bios_get_dac(); 1146 error = vesa_bios_save_palette(0, 256, palette, bits); 1147 if (error == 0) 1148 return 0; 1149 if (bits != 6) 1150 return error; 1151 } 1152 1153 return (*prevvidsw->save_palette)(adp, palette); 1154 } 1155 1156 static int 1157 vesa_load_palette(video_adapter_t *adp, u_char *palette) 1158 { 1159 #if notyet 1160 int bits; 1161 int error; 1162 1163 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1164 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) { 1165 error = vesa_bios_load_palette(0, 256, palette, bits); 1166 if (error == 0) 1167 return 0; 1168 if (vesa_bios_set_dac(6) != 6) 1169 return 1; 1170 } 1171 #endif /* notyet */ 1172 1173 return (*prevvidsw->load_palette)(adp, palette); 1174 } 1175 1176 static int 1177 vesa_set_border(video_adapter_t *adp, int color) 1178 { 1179 return (*prevvidsw->set_border)(adp, color); 1180 } 1181 1182 static int 1183 vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1184 { 1185 if (adp != vesa_adp) 1186 return (*prevvidsw->save_state)(adp, p, size); 1187 1188 if (vesa_state_buf_size == 0) 1189 vesa_state_buf_size = vesa_bios_state_buf_size(); 1190 if (size == 0) 1191 return (sizeof(int) + vesa_state_buf_size); 1192 else if (size < (sizeof(int) + vesa_state_buf_size)) 1193 return 1; 1194 1195 ((adp_state_t *)p)->sig = V_STATE_SIG; 1196 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1197 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1198 vesa_state_buf_size); 1199 } 1200 1201 static int 1202 vesa_load_state(video_adapter_t *adp, void *p) 1203 { 1204 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1205 return (*prevvidsw->load_state)(adp, p); 1206 1207 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1208 vesa_state_buf_size); 1209 } 1210 1211 #if 0 1212 static int 1213 vesa_get_origin(video_adapter_t *adp, off_t *offset) 1214 { 1215 struct vm86frame vmf; 1216 int err; 1217 1218 bzero(&vmf, sizeof(vmf)); 1219 vmf.vmf_eax = 0x4f05; 1220 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */ 1221 err = vm86_intcall(0x10, &vmf); 1222 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 1223 return 1; 1224 *offset = vmf.vmf_dx*adp->va_window_gran; 1225 return 0; 1226 } 1227 #endif 1228 1229 static int 1230 vesa_set_origin(video_adapter_t *adp, off_t offset) 1231 { 1232 struct vm86frame vmf; 1233 int err; 1234 1235 /* 1236 * This function should return as quickly as possible to 1237 * maintain good performance of the system. For this reason, 1238 * error checking is kept minimal and let the VESA BIOS to 1239 * detect error. 1240 */ 1241 if (adp != vesa_adp) 1242 return (*prevvidsw->set_win_org)(adp, offset); 1243 1244 /* if this is a linear frame buffer, do nothing */ 1245 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1246 return 0; 1247 /* XXX */ 1248 if (adp->va_window_gran == 0) 1249 return 1; 1250 1251 bzero(&vmf, sizeof(vmf)); 1252 vmf.vmf_eax = 0x4f05; 1253 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */ 1254 vmf.vmf_edx = offset/adp->va_window_gran; 1255 err = vm86_intcall(0x10, &vmf); 1256 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 1257 return 1; 1258 bzero(&vmf, sizeof(vmf)); 1259 vmf.vmf_eax = 0x4f05; 1260 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */ 1261 vmf.vmf_edx = offset/adp->va_window_gran; 1262 err = vm86_intcall(0x10, &vmf); 1263 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1264 return 0; /* XXX */ 1265 } 1266 1267 static int 1268 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1269 { 1270 return (*prevvidsw->read_hw_cursor)(adp, col, row); 1271 } 1272 1273 static int 1274 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1275 { 1276 return (*prevvidsw->set_hw_cursor)(adp, col, row); 1277 } 1278 1279 static int 1280 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1281 int celsize, int blink) 1282 { 1283 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1284 blink); 1285 } 1286 1287 static int 1288 vesa_blank_display(video_adapter_t *adp, int mode) 1289 { 1290 /* XXX: use VESA DPMS */ 1291 return (*prevvidsw->blank_display)(adp, mode); 1292 } 1293 1294 static int 1295 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 1296 int prot) 1297 { 1298 #if VESA_DEBUG > 0 1299 printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n", 1300 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1301 #endif 1302 1303 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) { 1304 /* va_window_size == va_buffer_size/vi_planes */ 1305 /* XXX: is this correct? */ 1306 if (offset > adp->va_window_size - PAGE_SIZE) 1307 return -1; 1308 *paddr = adp->va_info.vi_buffer + offset; 1309 return 0; 1310 } else { 1311 return (*prevvidsw->mmap)(adp, offset, paddr, prot); 1312 } 1313 } 1314 1315 static int 1316 vesa_clear(video_adapter_t *adp) 1317 { 1318 return (*prevvidsw->clear)(adp); 1319 } 1320 1321 static int 1322 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1323 { 1324 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy); 1325 } 1326 1327 static int 1328 vesa_bitblt(video_adapter_t *adp,...) 1329 { 1330 /* FIXME */ 1331 return 1; 1332 } 1333 1334 static int 1335 get_palette(video_adapter_t *adp, int base, int count, 1336 u_char *red, u_char *green, u_char *blue, u_char *trans) 1337 { 1338 u_char *r; 1339 u_char *g; 1340 u_char *b; 1341 int bits; 1342 int error; 1343 1344 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256)) 1345 return 1; 1346 if ((base + count) > 256) 1347 return 1; 1348 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)) 1349 return 1; 1350 1351 bits = vesa_bios_get_dac(); 1352 if (bits <= 6) 1353 return 1; 1354 1355 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1356 g = r + count; 1357 b = g + count; 1358 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1359 if (error == 0) { 1360 copyout(r, red, count); 1361 copyout(g, green, count); 1362 copyout(b, blue, count); 1363 if (trans != NULL) { 1364 bzero(r, count); 1365 copyout(r, trans, count); 1366 } 1367 } 1368 free(r, M_DEVBUF); 1369 1370 /* if error && bits != 6 at this point, we are in in trouble... XXX */ 1371 return error; 1372 } 1373 1374 static int 1375 set_palette(video_adapter_t *adp, int base, int count, 1376 u_char *red, u_char *green, u_char *blue, u_char *trans) 1377 { 1378 return 1; 1379 #if notyet 1380 u_char *r; 1381 u_char *g; 1382 u_char *b; 1383 int bits; 1384 int error; 1385 1386 if ((base < 0) || (base >= 256) || (base + count > 256)) 1387 return 1; 1388 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode) 1389 || ((bits = vesa_bios_set_dac(8)) <= 6)) 1390 return 1; 1391 1392 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1393 g = r + count; 1394 b = g + count; 1395 copyin(red, r, count); 1396 copyin(green, g, count); 1397 copyin(blue, b, count); 1398 1399 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1400 free(r, M_DEVBUF); 1401 if (error == 0) 1402 return 0; 1403 1404 /* if the following call fails, we are in trouble... XXX */ 1405 vesa_bios_set_dac(6); 1406 return 1; 1407 #endif /* notyet */ 1408 } 1409 1410 static int 1411 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1412 { 1413 int bytes; 1414 1415 if (adp != vesa_adp) 1416 return (*prevvidsw->ioctl)(adp, cmd, arg); 1417 1418 switch (cmd) { 1419 case FBIO_SETWINORG: /* set frame buffer window origin */ 1420 if (!VESA_MODE(adp->va_mode)) 1421 return (*prevvidsw->ioctl)(adp, cmd, arg); 1422 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1423 1424 case FBIO_SETDISPSTART: /* set display start address */ 1425 if (!VESA_MODE(adp->va_mode)) 1426 return (*prevvidsw->ioctl)(adp, cmd, arg); 1427 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1428 ((video_display_start_t *)arg)->y)) 1429 return ENODEV; 1430 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1431 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1432 return 0; 1433 1434 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1435 if (!VESA_MODE(adp->va_mode)) 1436 return (*prevvidsw->ioctl)(adp, cmd, arg); 1437 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1438 return ENODEV; 1439 adp->va_line_width = bytes; 1440 #if VESA_DEBUG > 1 1441 printf("new line width:%d\n", adp->va_line_width); 1442 #endif 1443 return 0; 1444 1445 case FBIO_GETPALETTE: /* get color palette */ 1446 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1447 ((video_color_palette_t *)arg)->count, 1448 ((video_color_palette_t *)arg)->red, 1449 ((video_color_palette_t *)arg)->green, 1450 ((video_color_palette_t *)arg)->blue, 1451 ((video_color_palette_t *)arg)->transparent)) 1452 return (*prevvidsw->ioctl)(adp, cmd, arg); 1453 return 0; 1454 1455 1456 case FBIO_SETPALETTE: /* set color palette */ 1457 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1458 ((video_color_palette_t *)arg)->count, 1459 ((video_color_palette_t *)arg)->red, 1460 ((video_color_palette_t *)arg)->green, 1461 ((video_color_palette_t *)arg)->blue, 1462 ((video_color_palette_t *)arg)->transparent)) 1463 return (*prevvidsw->ioctl)(adp, cmd, arg); 1464 return 0; 1465 1466 case FBIOGETCMAP: /* get color palette */ 1467 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1468 ((struct fbcmap *)arg)->count, 1469 ((struct fbcmap *)arg)->red, 1470 ((struct fbcmap *)arg)->green, 1471 ((struct fbcmap *)arg)->blue, NULL)) 1472 return (*prevvidsw->ioctl)(adp, cmd, arg); 1473 return 0; 1474 1475 case FBIOPUTCMAP: /* set color palette */ 1476 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1477 ((struct fbcmap *)arg)->count, 1478 ((struct fbcmap *)arg)->red, 1479 ((struct fbcmap *)arg)->green, 1480 ((struct fbcmap *)arg)->blue, NULL)) 1481 return (*prevvidsw->ioctl)(adp, cmd, arg); 1482 return 0; 1483 1484 default: 1485 return (*prevvidsw->ioctl)(adp, cmd, arg); 1486 } 1487 } 1488 1489 static int 1490 vesa_diag(video_adapter_t *adp, int level) 1491 { 1492 int error; 1493 1494 /* call the previous handler first */ 1495 error = (*prevvidsw->diag)(adp, level); 1496 if (error) 1497 return error; 1498 1499 if (adp != vesa_adp) 1500 return 1; 1501 1502 if (level <= 0) 1503 return 0; 1504 1505 return 0; 1506 } 1507 1508 static int 1509 vesa_bios_info(int level) 1510 { 1511 #if VESA_DEBUG > 1 1512 struct vesa_mode vmode; 1513 int i; 1514 #endif 1515 1516 if (bootverbose) { 1517 /* general adapter information */ 1518 printf( 1519 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1520 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 + 1521 ((vesa_adp_info->v_version & 0x0f00) >> 8), 1522 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 + 1523 (vesa_adp_info->v_version & 0x000f), 1524 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1525 vesa_vmodetab, vesa_adp_info->v_modetable); 1526 1527 /* OEM string */ 1528 if (vesa_oemstr != NULL) 1529 printf("VESA: %s\n", vesa_oemstr); 1530 } 1531 1532 if (level <= 0) 1533 return 0; 1534 1535 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) { 1536 /* vender name, product name, product revision */ 1537 printf("VESA: %s %s %s\n", 1538 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1539 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1540 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1541 } 1542 1543 #if VESA_DEBUG > 1 1544 /* mode information */ 1545 for (i = 0; 1546 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1547 && (vesa_vmodetab[i] != 0xffff); ++i) { 1548 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1549 continue; 1550 1551 /* print something for diagnostic purpose */ 1552 printf("VESA: mode:0x%03x, flags:0x%04x", 1553 vesa_vmodetab[i], vmode.v_modeattr); 1554 if (vmode.v_modeattr & V_MODEOPTINFO) { 1555 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1556 printf(", G %dx%dx%d %d, ", 1557 vmode.v_width, vmode.v_height, 1558 vmode.v_bpp, vmode.v_planes); 1559 } else { 1560 printf(", T %dx%d, ", 1561 vmode.v_width, vmode.v_height); 1562 } 1563 printf("font:%dx%d, ", 1564 vmode.v_cwidth, vmode.v_cheight); 1565 printf("pages:%d, mem:%d", 1566 vmode.v_ipages + 1, vmode.v_memmodel); 1567 } 1568 if (vmode.v_modeattr & V_MODELFB) { 1569 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1570 vmode.v_lfb, vmode.v_offscreen, 1571 vmode.v_offscreensize*1024); 1572 } 1573 printf("\n"); 1574 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1575 vmode.v_waseg, vmode.v_waattr, 1576 vmode.v_wbseg, vmode.v_wbattr); 1577 printf("size:%dk, gran:%dk\n", 1578 vmode.v_wsize, vmode.v_wgran); 1579 } 1580 #endif /* VESA_DEBUG > 1 */ 1581 1582 return 0; 1583 } 1584 1585 /* module loading */ 1586 1587 static int 1588 vesa_load(void) 1589 { 1590 int error; 1591 int s; 1592 1593 if (vesa_init_done) 1594 return 0; 1595 1596 /* locate a VGA adapter */ 1597 s = spltty(); 1598 vesa_adp = NULL; 1599 error = vesa_configure(0); 1600 splx(s); 1601 1602 if (error == 0) 1603 vesa_bios_info(bootverbose); 1604 1605 return error; 1606 } 1607 1608 static int 1609 vesa_unload(void) 1610 { 1611 u_char palette[256*3]; 1612 int error; 1613 int bits; 1614 int s; 1615 1616 /* if the adapter is currently in a VESA mode, don't unload */ 1617 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1618 return EBUSY; 1619 /* 1620 * FIXME: if there is at least one vty which is in a VESA mode, 1621 * we shouldn't be unloading! XXX 1622 */ 1623 1624 s = spltty(); 1625 if ((error = vesa_unload_ioctl()) == 0) { 1626 if (vesa_adp != NULL) { 1627 if (vesa_adp_info->v_flags & V_DAC8) { 1628 bits = vesa_bios_get_dac(); 1629 if (bits > 6) { 1630 vesa_bios_save_palette(0, 256, 1631 palette, bits); 1632 vesa_bios_set_dac(6); 1633 vesa_bios_load_palette(0, 256, 1634 palette, 6); 1635 } 1636 } 1637 vesa_adp->va_flags &= ~V_ADP_VESA; 1638 vidsw[vesa_adp->va_index] = prevvidsw; 1639 } 1640 } 1641 splx(s); 1642 1643 return error; 1644 } 1645 1646 static int 1647 vesa_mod_event(module_t mod, int type, void *data) 1648 { 1649 switch (type) { 1650 case MOD_LOAD: 1651 return vesa_load(); 1652 case MOD_UNLOAD: 1653 return vesa_unload(); 1654 default: 1655 return EOPNOTSUPP; 1656 } 1657 return 0; 1658 } 1659 1660 static moduledata_t vesa_mod = { 1661 "vesa", 1662 vesa_mod_event, 1663 NULL, 1664 }; 1665 1666 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1667 1668 #endif /* VGA_NO_MODE_CHANGE */
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