vesa.c revision 66710
1189251Ssam/*- 2189251Ssam * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith 3189251Ssam * All rights reserved. 4189251Ssam * 5252726Srpaulo * Redistribution and use in source and binary forms, with or without 6252726Srpaulo * modification, are permitted provided that the following conditions 7189251Ssam * are met: 8189251Ssam * 1. Redistributions of source code must retain the above copyright 9189251Ssam * notice, this list of conditions and the following disclaimer as 10189251Ssam * the first lines of this file unmodified. 11189251Ssam * 2. Redistributions in binary form must reproduce the above copyright 12189251Ssam * notice, this list of conditions and the following disclaimer in the 13189251Ssam * documentation and/or other materials provided with the distribution. 14189251Ssam * 15189251Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16189251Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17189251Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18189251Ssam * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19189251Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20189251Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21189251Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22189251Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23189251Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24189251Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25189251Ssam * 26189251Ssam * $FreeBSD: head/sys/i386/isa/vesa.c 66710 2000-10-06 01:43:59Z jhb $ 27189251Ssam */ 28189251Ssam 29189251Ssam#include "opt_vga.h" 30189251Ssam#include "opt_vesa.h" 31189251Ssam 32189251Ssam#ifndef VGA_NO_MODE_CHANGE 33189251Ssam 34189251Ssam#include <sys/param.h> 35189251Ssam#include <sys/systm.h> 36189251Ssam#include <sys/kernel.h> 37189251Ssam#include <sys/module.h> 38189251Ssam#include <sys/malloc.h> 39189251Ssam#include <sys/fbio.h> 40189251Ssam 41189251Ssam#include <vm/vm.h> 42189251Ssam#include <vm/vm_extern.h> 43189251Ssam#include <vm/vm_kern.h> 44189251Ssam#include <vm/pmap.h> 45189251Ssam 46189251Ssam#include <machine/md_var.h> 47189251Ssam#include <machine/vm86.h> 48189251Ssam#include <machine/pc/bios.h> 49189251Ssam#include <machine/pc/vesa.h> 50189251Ssam 51189251Ssam#include <dev/fb/fbreg.h> 52189251Ssam#include <dev/fb/vgareg.h> 53189251Ssam 54189251Ssam#ifndef __i386__ 55189251Ssam#include <isa/isareg.h> 56189251Ssam#else 57189251Ssam#include <i386/isa/isa.h> 58189251Ssam#endif 59189251Ssam 60189251Ssam#ifndef VESA_DEBUG 61189251Ssam#define VESA_DEBUG 0 62189251Ssam#endif 63189251Ssam 64189251Ssam/* VESA video adapter state buffer stub */ 65189251Ssamstruct adp_state { 66189251Ssam int sig; 67189251Ssam#define V_STATE_SIG 0x61736576 68189251Ssam u_char regs[1]; 69189251Ssam}; 70189251Ssamtypedef struct adp_state adp_state_t; 71189251Ssam 72189251Ssam/* VESA video adapter */ 73189251Ssamstatic video_adapter_t *vesa_adp = NULL; 74189251Ssamstatic int vesa_state_buf_size = 0; 75189251Ssam 76189251Ssam/* VESA functions */ 77189251Ssam#if 0 78189251Ssamstatic int vesa_nop(void); 79189251Ssam#endif 80189251Ssamstatic int vesa_error(void); 81189251Ssamstatic vi_probe_t vesa_probe; 82189251Ssamstatic vi_init_t vesa_init; 83189251Ssamstatic vi_get_info_t vesa_get_info; 84189251Ssamstatic vi_query_mode_t vesa_query_mode; 85189251Ssamstatic vi_set_mode_t vesa_set_mode; 86189251Ssamstatic vi_save_font_t vesa_save_font; 87189251Ssamstatic vi_load_font_t vesa_load_font; 88189251Ssamstatic vi_show_font_t vesa_show_font; 89189251Ssamstatic vi_save_palette_t vesa_save_palette; 90189251Ssamstatic vi_load_palette_t vesa_load_palette; 91214734Srpaulostatic vi_set_border_t vesa_set_border; 92189251Ssamstatic vi_save_state_t vesa_save_state; 93189251Ssamstatic vi_load_state_t vesa_load_state; 94189251Ssamstatic vi_set_win_org_t vesa_set_origin; 95189251Ssamstatic vi_read_hw_cursor_t vesa_read_hw_cursor; 96189251Ssamstatic vi_set_hw_cursor_t vesa_set_hw_cursor; 97189251Ssamstatic vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape; 98189251Ssamstatic vi_blank_display_t vesa_blank_display; 99189251Ssamstatic vi_mmap_t vesa_mmap; 100189251Ssamstatic vi_ioctl_t vesa_ioctl; 101189251Ssamstatic vi_clear_t vesa_clear; 102189251Ssamstatic vi_fill_rect_t vesa_fill_rect; 103189251Ssamstatic vi_bitblt_t vesa_bitblt; 104189251Ssamstatic vi_diag_t vesa_diag; 105189251Ssamstatic int vesa_bios_info(int level); 106189251Ssamstatic struct vm86context vesa_vmcontext; 107214734Srpaulo 108189251Ssamstatic video_switch_t vesavidsw = { 109189251Ssam vesa_probe, 110189251Ssam vesa_init, 111189251Ssam vesa_get_info, 112189251Ssam vesa_query_mode, 113189251Ssam vesa_set_mode, 114189251Ssam vesa_save_font, 115189251Ssam vesa_load_font, 116189251Ssam vesa_show_font, 117189251Ssam vesa_save_palette, 118189251Ssam vesa_load_palette, 119189251Ssam vesa_set_border, 120189251Ssam vesa_save_state, 121189251Ssam vesa_load_state, 122189251Ssam vesa_set_origin, 123189251Ssam vesa_read_hw_cursor, 124189251Ssam vesa_set_hw_cursor, 125189251Ssam vesa_set_hw_cursor_shape, 126189251Ssam vesa_blank_display, 127189251Ssam vesa_mmap, 128189251Ssam vesa_ioctl, 129189251Ssam vesa_clear, 130189251Ssam vesa_fill_rect, 131189251Ssam vesa_bitblt, 132214734Srpaulo vesa_error, 133189251Ssam vesa_error, 134189251Ssam vesa_diag, 135189251Ssam}; 136189251Ssam 137189251Ssamstatic video_switch_t *prevvidsw; 138189251Ssam 139189251Ssam/* VESA BIOS video modes */ 140189251Ssam#define VESA_MAXMODES 64 141189251Ssam#define EOT (-1) 142189251Ssam#define NA (-2) 143189251Ssam 144189251Ssam#define MODE_TABLE_DELTA 8 145189251Ssam 146189251Ssamstatic int vesa_vmode_max = 0; 147189251Ssamstatic video_info_t vesa_vmode_empty = { EOT }; 148189251Ssamstatic video_info_t *vesa_vmode = &vesa_vmode_empty; 149189251Ssam 150189251Ssamstatic int vesa_init_done = FALSE; 151189251Ssamstatic int has_vesa_bios = FALSE; 152189251Ssamstatic struct vesa_info *vesa_adp_info = NULL; 153189251Ssamstatic u_int16_t *vesa_vmodetab = NULL; 154189251Ssamstatic char *vesa_oemstr = NULL; 155189251Ssamstatic char *vesa_venderstr = NULL; 156189251Ssamstatic char *vesa_prodstr = NULL; 157189251Ssamstatic char *vesa_revstr = NULL; 158189251Ssam 159189251Ssam/* local macros and functions */ 160189251Ssam#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 161189251Ssam 162189251Ssamstatic int int10_set_mode(int mode); 163189251Ssamstatic int vesa_bios_get_mode(int mode, struct vesa_mode *vmode); 164189251Ssamstatic int vesa_bios_set_mode(int mode); 165189251Ssamstatic int vesa_bios_get_dac(void); 166189251Ssamstatic int vesa_bios_set_dac(int bits); 167189251Ssamstatic int vesa_bios_save_palette(int start, int colors, u_char *palette, 168189251Ssam int bits); 169189251Ssamstatic int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, 170189251Ssam u_char *b, int bits); 171189251Ssamstatic int vesa_bios_load_palette(int start, int colors, u_char *palette, 172189251Ssam int bits); 173189251Ssam#ifdef notyet 174189251Ssamstatic int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, 175189251Ssam u_char *b, int bits); 176189251Ssam#endif 177189251Ssam#define STATE_SIZE 0 178189251Ssam#define STATE_SAVE 1 179189251Ssam#define STATE_LOAD 2 180189251Ssam#define STATE_HW (1<<0) 181189251Ssam#define STATE_DATA (1<<1) 182189251Ssam#define STATE_DAC (1<<2) 183189251Ssam#define STATE_REG (1<<3) 184189251Ssam#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) 185189251Ssam#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) 186189251Ssamstatic int vesa_bios_state_buf_size(void); 187189251Ssamstatic int vesa_bios_save_restore(int code, void *p, size_t size); 188189251Ssamstatic int vesa_bios_get_line_length(void); 189189251Ssamstatic int vesa_bios_set_line_length(int pixel, int *bytes, int *lines); 190189251Ssam#if 0 191189251Ssamstatic int vesa_bios_get_start(int *x, int *y); 192189251Ssam#endif 193189251Ssamstatic int vesa_bios_set_start(int x, int y); 194189251Ssamstatic int vesa_map_gen_mode_num(int type, int color, int mode); 195189251Ssamstatic int vesa_translate_flags(u_int16_t vflags); 196189251Ssamstatic int vesa_translate_mmodel(u_int8_t vmodel); 197189251Ssamstatic void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, 198189251Ssam u_char *buf); 199189251Ssamstatic int vesa_bios_init(void); 200189251Ssamstatic void vesa_clear_modes(video_info_t *info, int color); 201189251Ssamstatic vm_offset_t vesa_map_buffer(u_int paddr, size_t size); 202189251Ssamstatic void vesa_unmap_buffer(vm_offset_t vaddr, size_t size); 203189251Ssam 204189251Ssam#if 0 205189251Ssamstatic int vesa_get_origin(video_adapter_t *adp, off_t *offset); 206189251Ssam#endif 207189251Ssam 208189251Ssamstatic void 209189251Ssamdump_buffer(u_char *buf, size_t len) 210189251Ssam{ 211189251Ssam int i; 212189251Ssam 213189251Ssam for(i = 0; i < len;) { 214189251Ssam printf("%02x ", buf[i]); 215189251Ssam if ((++i % 16) == 0) 216189251Ssam printf("\n"); 217189251Ssam } 218189251Ssam} 219189251Ssam 220189251Ssam/* INT 10 BIOS calls */ 221189251Ssamstatic int 222189251Ssamint10_set_mode(int mode) 223189251Ssam{ 224189251Ssam struct vm86frame vmf; 225189251Ssam 226189251Ssam bzero(&vmf, sizeof(vmf)); 227189251Ssam vmf.vmf_eax = 0x0000 | mode; 228189251Ssam vm86_intcall(0x10, &vmf); 229189251Ssam return 0; 230} 231 232/* VESA BIOS calls */ 233static int 234vesa_bios_get_mode(int mode, struct vesa_mode *vmode) 235{ 236 struct vm86frame vmf; 237 u_char *buf; 238 int err; 239 240 bzero(&vmf, sizeof(vmf)); 241 vmf.vmf_eax = 0x4f01; 242 vmf.vmf_ecx = mode; 243 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 244 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di); 245 246 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 247 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 248 return 1; 249 bcopy(buf, vmode, sizeof(*vmode)); 250 return 0; 251} 252 253static int 254vesa_bios_set_mode(int mode) 255{ 256 struct vm86frame vmf; 257 int err; 258 259 bzero(&vmf, sizeof(vmf)); 260 vmf.vmf_eax = 0x4f02; 261 vmf.vmf_ebx = mode; 262 err = vm86_intcall(0x10, &vmf); 263 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 264} 265 266static int 267vesa_bios_get_dac(void) 268{ 269 struct vm86frame vmf; 270 int err; 271 272 bzero(&vmf, sizeof(vmf)); 273 vmf.vmf_eax = 0x4f08; 274 vmf.vmf_ebx = 1; /* get DAC width */ 275 err = vm86_intcall(0x10, &vmf); 276 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 277 return 6; /* XXX */ 278 return ((vmf.vmf_ebx >> 8) & 0x00ff); 279} 280 281static int 282vesa_bios_set_dac(int bits) 283{ 284 struct vm86frame vmf; 285 int err; 286 287 bzero(&vmf, sizeof(vmf)); 288 vmf.vmf_eax = 0x4f08; 289 vmf.vmf_ebx = (bits << 8); 290 err = vm86_intcall(0x10, &vmf); 291 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 292 return 6; /* XXX */ 293 return ((vmf.vmf_ebx >> 8) & 0x00ff); 294} 295 296static int 297vesa_bios_save_palette(int start, int colors, u_char *palette, int bits) 298{ 299 struct vm86frame vmf; 300 u_char *p; 301 int err; 302 int i; 303 304 bzero(&vmf, sizeof(vmf)); 305 vmf.vmf_eax = 0x4f09; 306 vmf.vmf_ebx = 1; /* get primary palette data */ 307 vmf.vmf_ecx = colors; 308 vmf.vmf_edx = start; 309 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 310 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 311 312 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 313 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 314 return 1; 315 316 bits = 8 - bits; 317 for (i = 0; i < colors; ++i) { 318 palette[i*3] = p[i*4 + 2] << bits; 319 palette[i*3 + 1] = p[i*4 + 1] << bits; 320 palette[i*3 + 2] = p[i*4] << bits; 321 } 322 return 0; 323} 324 325static int 326vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 327 int bits) 328{ 329 struct vm86frame vmf; 330 u_char *p; 331 int err; 332 int i; 333 334 bzero(&vmf, sizeof(vmf)); 335 vmf.vmf_eax = 0x4f09; 336 vmf.vmf_ebx = 1; /* get primary palette data */ 337 vmf.vmf_ecx = colors; 338 vmf.vmf_edx = start; 339 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 340 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 341 342 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 343 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 344 return 1; 345 346 bits = 8 - bits; 347 for (i = 0; i < colors; ++i) { 348 r[i] = p[i*4 + 2] << bits; 349 g[i] = p[i*4 + 1] << bits; 350 b[i] = p[i*4] << bits; 351 } 352 return 0; 353} 354 355static int 356vesa_bios_load_palette(int start, int colors, u_char *palette, int bits) 357{ 358 struct vm86frame vmf; 359 u_char *p; 360 int err; 361 int i; 362 363 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 364 bits = 8 - bits; 365 for (i = 0; i < colors; ++i) { 366 p[i*4] = palette[i*3 + 2] >> bits; 367 p[i*4 + 1] = palette[i*3 + 1] >> bits; 368 p[i*4 + 2] = palette[i*3] >> bits; 369 p[i*4 + 3] = 0; 370 } 371 372 bzero(&vmf, sizeof(vmf)); 373 vmf.vmf_eax = 0x4f09; 374 vmf.vmf_ebx = 0; /* set primary palette data */ 375 vmf.vmf_ecx = colors; 376 vmf.vmf_edx = start; 377 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 378 379 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 380 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 381} 382 383#ifdef notyet 384static int 385vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b, 386 int bits) 387{ 388 struct vm86frame vmf; 389 u_char *p; 390 int err; 391 int i; 392 393 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 394 bits = 8 - bits; 395 for (i = 0; i < colors; ++i) { 396 p[i*4] = b[i] >> bits; 397 p[i*4 + 1] = g[i] >> bits; 398 p[i*4 + 2] = r[i] >> bits; 399 p[i*4 + 3] = 0; 400 } 401 402 bzero(&vmf, sizeof(vmf)); 403 vmf.vmf_eax = 0x4f09; 404 vmf.vmf_ebx = 0; /* set primary palette data */ 405 vmf.vmf_ecx = colors; 406 vmf.vmf_edx = start; 407 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di); 408 409 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 410 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 411} 412#endif 413 414static int 415vesa_bios_state_buf_size(void) 416{ 417 struct vm86frame vmf; 418 int err; 419 420 bzero(&vmf, sizeof(vmf)); 421 vmf.vmf_eax = 0x4f04; 422 vmf.vmf_ecx = STATE_MOST; 423 vmf.vmf_edx = STATE_SIZE; 424 err = vm86_intcall(0x10, &vmf); 425 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 426 return 0; 427 return vmf.vmf_bx*64; 428} 429 430static int 431vesa_bios_save_restore(int code, void *p, size_t size) 432{ 433 struct vm86frame vmf; 434 u_char *buf; 435 int err; 436 437 bzero(&vmf, sizeof(vmf)); 438 vmf.vmf_eax = 0x4f04; 439 vmf.vmf_ecx = STATE_MOST; 440 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */ 441 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1); 442 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di); 443 bcopy(p, buf, size); 444 445 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 446 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 447} 448 449static int 450vesa_bios_get_line_length(void) 451{ 452 struct vm86frame vmf; 453 int err; 454 455 bzero(&vmf, sizeof(vmf)); 456 vmf.vmf_eax = 0x4f06; 457 vmf.vmf_ebx = 1; /* get scan line length */ 458 err = vm86_intcall(0x10, &vmf); 459 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 460 return -1; 461 return vmf.vmf_bx; /* line length in bytes */ 462} 463 464static int 465vesa_bios_set_line_length(int pixel, int *bytes, int *lines) 466{ 467 struct vm86frame vmf; 468 int err; 469 470 bzero(&vmf, sizeof(vmf)); 471 vmf.vmf_eax = 0x4f06; 472 vmf.vmf_ebx = 0; /* set scan line length in pixel */ 473 vmf.vmf_ecx = pixel; 474 err = vm86_intcall(0x10, &vmf); 475#if VESA_DEBUG > 1 476 printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx); 477#endif 478 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 479 return 1; 480 if (bytes) 481 *bytes = vmf.vmf_bx; 482 if (lines) 483 *lines = vmf.vmf_dx; 484 return 0; 485} 486 487#if 0 488static int 489vesa_bios_get_start(int *x, int *y) 490{ 491 struct vm86frame vmf; 492 int err; 493 494 bzero(&vmf, sizeof(vmf)); 495 vmf.vmf_eax = 0x4f07; 496 vmf.vmf_ebx = 1; /* get display start */ 497 err = vm86_intcall(0x10, &vmf); 498 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 499 return 1; 500 *x = vmf.vmf_cx; 501 *y = vmf.vmf_dx; 502 return 0; 503} 504#endif 505 506static int 507vesa_bios_set_start(int x, int y) 508{ 509 struct vm86frame vmf; 510 int err; 511 512 bzero(&vmf, sizeof(vmf)); 513 vmf.vmf_eax = 0x4f07; 514 vmf.vmf_ebx = 0x80; /* set display start */ 515 vmf.vmf_edx = y; 516 vmf.vmf_ecx = x; 517 err = vm86_intcall(0x10, &vmf); 518 return ((err != 0) || (vmf.vmf_ax != 0x4f)); 519} 520 521/* map a generic video mode to a known mode */ 522static int 523vesa_map_gen_mode_num(int type, int color, int mode) 524{ 525 static struct { 526 int from; 527 int to; 528 } mode_map[] = { 529 { M_TEXT_132x25, M_VESA_C132x25 }, 530 { M_TEXT_132x43, M_VESA_C132x43 }, 531 { M_TEXT_132x50, M_VESA_C132x50 }, 532 { M_TEXT_132x60, M_VESA_C132x60 }, 533 }; 534 int i; 535 536 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 537 if (mode_map[i].from == mode) 538 return mode_map[i].to; 539 } 540 return mode; 541} 542 543static int 544vesa_translate_flags(u_int16_t vflags) 545{ 546 static struct { 547 u_int16_t mask; 548 int set; 549 int reset; 550 } ftable[] = { 551 { V_MODECOLOR, V_INFO_COLOR, 0 }, 552 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 }, 553 { V_MODELFB, V_INFO_LINEAR, 0 }, 554 }; 555 int flags; 556 int i; 557 558 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) { 559 flags |= (vflags & ftable[i].mask) ? 560 ftable[i].set : ftable[i].reset; 561 } 562 return flags; 563} 564 565static int 566vesa_translate_mmodel(u_int8_t vmodel) 567{ 568 static struct { 569 u_int8_t vmodel; 570 int mmodel; 571 } mtable[] = { 572 { V_MMTEXT, V_INFO_MM_TEXT }, 573 { V_MMCGA, V_INFO_MM_CGA }, 574 { V_MMHGC, V_INFO_MM_HGC }, 575 { V_MMEGA, V_INFO_MM_PLANAR }, 576 { V_MMPACKED, V_INFO_MM_PACKED }, 577 { V_MMDIRCOLOR, V_INFO_MM_DIRECT }, 578 }; 579 int i; 580 581 for (i = 0; mtable[i].mmodel >= 0; ++i) { 582 if (mtable[i].vmodel == vmodel) 583 return mtable[i].mmodel; 584 } 585 return V_INFO_MM_OTHER; 586} 587 588static void 589*vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf) 590{ 591 if (p == 0) 592 return NULL; 593 if (((p >> 16) == seg) && ((p & 0xffff) >= off)) 594 return (void *)(buf + ((p & 0xffff) - off)); 595 else { 596 p = BIOS_SADDRTOLADDR(p); 597 return (void *)BIOS_PADDRTOVADDR(p); 598 } 599} 600 601static int 602vesa_bios_init(void) 603{ 604 static u_char buf[512]; 605 struct vm86frame vmf; 606 struct vesa_mode vmode; 607 video_info_t *p; 608 u_char *vmbuf; 609 int modes; 610 int err; 611 int i; 612 613 if (vesa_init_done) 614 return 0; 615 616 has_vesa_bios = FALSE; 617 vesa_adp_info = NULL; 618 vesa_vmode_max = 0; 619 vesa_vmode[0].vi_mode = EOT; 620 621 vmbuf = (u_char *)vm86_addpage(&vesa_vmcontext, 1, 0); 622 bzero(&vmf, sizeof(vmf)); /* paranoia */ 623 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */ 624 vmf.vmf_eax = 0x4f00; 625 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di); 626 627 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext); 628 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4)) 629 return 1; 630 bcopy(vmbuf, buf, sizeof(buf)); 631 vesa_adp_info = (struct vesa_info *)buf; 632 if (bootverbose) { 633 printf("VESA: information block\n"); 634 dump_buffer(buf, 64); 635 } 636 if (vesa_adp_info->v_flags & V_NONVGA) 637 return 1; 638 if (vesa_adp_info->v_version < 0x0102) { 639 printf("VESA: VBE version %d.%d is not supported; " 640 "version 1.2 or later is required.\n", 641 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 642 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 643 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 644 + (vesa_adp_info->v_version & 0x000f)); 645 return 1; 646 } 647 648 /* fix string ptrs */ 649 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr, 650 vmf.vmf_es, vmf.vmf_di, buf); 651 if (vesa_adp_info->v_version >= 0x0200) { 652 vesa_venderstr = 653 (char *)vesa_fix_ptr(vesa_adp_info->v_venderstr, 654 vmf.vmf_es, vmf.vmf_di, buf); 655 vesa_prodstr = 656 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr, 657 vmf.vmf_es, vmf.vmf_di, buf); 658 vesa_revstr = 659 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr, 660 vmf.vmf_es, vmf.vmf_di, buf); 661 } 662 663 /* obtain video mode information */ 664 vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable, 665 vmf.vmf_es, vmf.vmf_di, buf); 666 if (vesa_vmodetab == NULL) 667 return 1; 668 for (i = 0, modes = 0; 669 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 670 && (vesa_vmodetab[i] != 0xffff); ++i) { 671 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 672 continue; 673 674 /* reject unsupported modes */ 675#if 0 676 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO 677 | V_MODENONVGA)) 678 != (V_MODESUPP | V_MODEOPTINFO)) 679 continue; 680#else 681 if ((vmode.v_modeattr & (V_MODEOPTINFO | V_MODENONVGA)) 682 != (V_MODEOPTINFO)) { 683#if VESA_DEBUG > 1 684 printf( 685 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n", 686 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 687 vmode.v_width, vmode.v_height, vmode.v_bpp, 688 vmode.v_modeattr); 689#endif 690 continue; 691 } 692#endif 693 694 /* expand the array if necessary */ 695 if (modes >= vesa_vmode_max) { 696 vesa_vmode_max += MODE_TABLE_DELTA; 697 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1), 698 M_DEVBUF, M_WAITOK); 699#if VESA_DEBUG > 1 700 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n", 701 modes, vesa_vmode_max); 702#endif 703 if (modes > 0) { 704 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes); 705 free(vesa_vmode, M_DEVBUF); 706 } 707 vesa_vmode = p; 708 } 709 710#if VESA_DEBUG > 1 711 printf("Found VESA %s mode: %d x %d x %d bpp\n", 712 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text", 713 vmode.v_width, vmode.v_height, vmode.v_bpp); 714#endif 715 /* copy some fields */ 716 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes])); 717 vesa_vmode[modes].vi_mode = vesa_vmodetab[i]; 718 vesa_vmode[modes].vi_width = vmode.v_width; 719 vesa_vmode[modes].vi_height = vmode.v_height; 720 vesa_vmode[modes].vi_depth = vmode.v_bpp; 721 vesa_vmode[modes].vi_planes = vmode.v_planes; 722 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth; 723 vesa_vmode[modes].vi_cheight = vmode.v_cheight; 724 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4; 725 /* XXX window B */ 726 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024; 727 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024; 728 if (vmode.v_modeattr & V_MODELFB) 729 vesa_vmode[modes].vi_buffer = vmode.v_lfb; 730 else 731 vesa_vmode[modes].vi_buffer = 0; 732 /* XXX */ 733 vesa_vmode[modes].vi_buffer_size 734 = vesa_adp_info->v_memsize*64*1024; 735#if 0 736 if (vmode.v_offscreen > vmode.v_lfb) 737 vesa_vmode[modes].vi_buffer_size 738 = vmode.v_offscreen + vmode.v_offscreensize*1024 739 - vmode.v_lfb; 740 else 741 vesa_vmode[modes].vi_buffer_size 742 = vmode.v_offscreen + vmode.v_offscreensize*1024 743#endif 744 vesa_vmode[modes].vi_mem_model 745 = vesa_translate_mmodel(vmode.v_memmodel); 746 vesa_vmode[modes].vi_pixel_fields[0] = 0; 747 vesa_vmode[modes].vi_pixel_fields[1] = 0; 748 vesa_vmode[modes].vi_pixel_fields[2] = 0; 749 vesa_vmode[modes].vi_pixel_fields[3] = 0; 750 vesa_vmode[modes].vi_pixel_fsizes[0] = 0; 751 vesa_vmode[modes].vi_pixel_fsizes[1] = 0; 752 vesa_vmode[modes].vi_pixel_fsizes[2] = 0; 753 vesa_vmode[modes].vi_pixel_fsizes[3] = 0; 754 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) { 755 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 756 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) { 757 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8; 758 vesa_vmode[modes].vi_pixel_fields[0] 759 = vmode.v_redfieldpos; 760 vesa_vmode[modes].vi_pixel_fields[1] 761 = vmode.v_greenfieldpos; 762 vesa_vmode[modes].vi_pixel_fields[2] 763 = vmode.v_bluefieldpos; 764 vesa_vmode[modes].vi_pixel_fields[3] 765 = vmode.v_resfieldpos; 766 vesa_vmode[modes].vi_pixel_fsizes[0] 767 = vmode.v_redmasksize; 768 vesa_vmode[modes].vi_pixel_fsizes[1] 769 = vmode.v_greenmasksize; 770 vesa_vmode[modes].vi_pixel_fsizes[2] 771 = vmode.v_bluemasksize; 772 vesa_vmode[modes].vi_pixel_fsizes[3] 773 = vmode.v_resmasksize; 774 } else { 775 vesa_vmode[modes].vi_pixel_size = 0; 776 } 777 778 vesa_vmode[modes].vi_flags 779 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA; 780 ++modes; 781 } 782 vesa_vmode[modes].vi_mode = EOT; 783 if (bootverbose) 784 printf("VESA: %d mode(s) found\n", modes); 785 786 has_vesa_bios = (modes > 0); 787 return (has_vesa_bios ? 0 : 1); 788} 789 790static void 791vesa_clear_modes(video_info_t *info, int color) 792{ 793 while (info->vi_mode != EOT) { 794 if ((info->vi_flags & V_INFO_COLOR) != color) 795 info->vi_mode = NA; 796 ++info; 797 } 798} 799 800static vm_offset_t 801vesa_map_buffer(u_int paddr, size_t size) 802{ 803 vm_offset_t vaddr; 804 u_int off; 805 806 off = paddr - trunc_page(paddr); 807 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off); 808#if VESA_DEBUG > 1 809 printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n", 810 paddr, vaddr, size, off); 811#endif 812 return (vaddr + off); 813} 814 815static void 816vesa_unmap_buffer(vm_offset_t vaddr, size_t size) 817{ 818#if VESA_DEBUG > 1 819 printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size); 820#endif 821 kmem_free(kernel_map, vaddr, size); 822} 823 824/* entry points */ 825 826static int 827vesa_configure(int flags) 828{ 829 video_adapter_t *adp; 830 int adapters; 831 int error; 832 int i; 833 834 if (vesa_init_done) 835 return 0; 836 if (flags & VIO_PROBE_ONLY) 837 return 0; /* XXX */ 838 839 /* 840 * If the VESA module has already been loaded, abort loading 841 * the module this time. 842 */ 843 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) { 844 if (adp->va_flags & V_ADP_VESA) 845 return ENXIO; 846 if (adp->va_type == KD_VGA) 847 break; 848 } 849 /* 850 * The VGA adapter is not found. This is because either 851 * 1) the VGA driver has not been initialized, or 2) the VGA card 852 * is not present. If 1) is the case, we shall defer 853 * initialization for now and try again later. 854 */ 855 if (adp == NULL) { 856 vga_sub_configure = vesa_configure; 857 return ENODEV; 858 } 859 860 /* count number of registered adapters */ 861 for (++i; vid_get_adapter(i) != NULL; ++i) 862 ; 863 adapters = i; 864 865 /* call VESA BIOS */ 866 vesa_adp = adp; 867 if (vesa_bios_init()) { 868 vesa_adp = NULL; 869 return ENXIO; 870 } 871 vesa_adp->va_flags |= V_ADP_VESA; 872 873 /* remove conflicting modes if we have more than one adapter */ 874 if (adapters > 1) { 875 vesa_clear_modes(vesa_vmode, 876 (vesa_adp->va_flags & V_ADP_COLOR) ? 877 V_INFO_COLOR : 0); 878 } 879 880 if ((error = vesa_load_ioctl()) == 0) { 881 prevvidsw = vidsw[vesa_adp->va_index]; 882 vidsw[vesa_adp->va_index] = &vesavidsw; 883 vesa_init_done = TRUE; 884 } else { 885 vesa_adp = NULL; 886 return error; 887 } 888 889 return 0; 890} 891 892#if 0 893static int 894vesa_nop(void) 895{ 896 return 0; 897} 898#endif 899 900static int 901vesa_error(void) 902{ 903 return 1; 904} 905 906static int 907vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 908{ 909 return (*prevvidsw->probe)(unit, adpp, arg, flags); 910} 911 912static int 913vesa_init(int unit, video_adapter_t *adp, int flags) 914{ 915 return (*prevvidsw->init)(unit, adp, flags); 916} 917 918static int 919vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info) 920{ 921 int i; 922 923 if ((*prevvidsw->get_info)(adp, mode, info) == 0) 924 return 0; 925 926 if (adp != vesa_adp) 927 return 1; 928 929 mode = vesa_map_gen_mode_num(vesa_adp->va_type, 930 vesa_adp->va_flags & V_ADP_COLOR, mode); 931 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 932 if (vesa_vmode[i].vi_mode == NA) 933 continue; 934 if (vesa_vmode[i].vi_mode == mode) { 935 *info = vesa_vmode[i]; 936 return 0; 937 } 938 } 939 return 1; 940} 941 942static int 943vesa_query_mode(video_adapter_t *adp, video_info_t *info) 944{ 945 int i; 946 947 if ((*prevvidsw->query_mode)(adp, info) == 0) 948 return 0; 949 if (adp != vesa_adp) 950 return ENODEV; 951 952 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) { 953 if ((info->vi_width != 0) 954 && (info->vi_width != vesa_vmode[i].vi_width)) 955 continue; 956 if ((info->vi_height != 0) 957 && (info->vi_height != vesa_vmode[i].vi_height)) 958 continue; 959 if ((info->vi_cwidth != 0) 960 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth)) 961 continue; 962 if ((info->vi_cheight != 0) 963 && (info->vi_cheight != vesa_vmode[i].vi_cheight)) 964 continue; 965 if ((info->vi_depth != 0) 966 && (info->vi_depth != vesa_vmode[i].vi_depth)) 967 continue; 968 if ((info->vi_planes != 0) 969 && (info->vi_planes != vesa_vmode[i].vi_planes)) 970 continue; 971 /* pixel format, memory model */ 972 if ((info->vi_flags != 0) 973 && (info->vi_flags != vesa_vmode[i].vi_flags)) 974 continue; 975 *info = vesa_vmode[i]; 976 return 0; 977 } 978 return ENODEV; 979} 980 981static int 982vesa_set_mode(video_adapter_t *adp, int mode) 983{ 984 video_info_t info; 985 int len; 986 987 if (adp != vesa_adp) 988 return (*prevvidsw->set_mode)(adp, mode); 989 990 mode = vesa_map_gen_mode_num(adp->va_type, 991 adp->va_flags & V_ADP_COLOR, mode); 992#if VESA_DEBUG > 0 993 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n", 994 adp->va_mode, adp->va_mode, mode, mode); 995#endif 996 /* 997 * If the current mode is a VESA mode and the new mode is not, 998 * restore the state of the adapter first by setting one of the 999 * standard VGA mode, so that non-standard, extended SVGA registers 1000 * are set to the state compatible with the standard VGA modes. 1001 * Otherwise (*prevvidsw->set_mode)() may not be able to set up 1002 * the new mode correctly. 1003 */ 1004 if (VESA_MODE(adp->va_mode)) { 1005 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) { 1006 int10_set_mode(adp->va_initial_bios_mode); 1007 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1008 vesa_unmap_buffer(adp->va_buffer, 1009 vesa_adp_info->v_memsize*64*1024); 1010 /* 1011 * Once (*prevvidsw->get_info)() succeeded, 1012 * (*prevvidsw->set_mode)() below won't fail... 1013 */ 1014 } 1015 } 1016 1017 /* we may not need to handle this mode after all... */ 1018 if ((*prevvidsw->set_mode)(adp, mode) == 0) 1019 return 0; 1020 1021 /* is the new mode supported? */ 1022 if (vesa_get_info(adp, mode, &info)) 1023 return 1; 1024 /* assert(VESA_MODE(mode)); */ 1025 1026#if VESA_DEBUG > 0 1027 printf("VESA: about to set a VESA mode...\n"); 1028#endif 1029 /* don't use the linear frame buffer for text modes. XXX */ 1030 if (!(info.vi_flags & V_INFO_GRAPHICS)) 1031 info.vi_flags &= ~V_INFO_LINEAR; 1032 1033 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0))) 1034 return 1; 1035 1036 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1037 vesa_unmap_buffer(adp->va_buffer, 1038 vesa_adp_info->v_memsize*64*1024); 1039 1040#if VESA_DEBUG > 0 1041 printf("VESA: mode set!\n"); 1042#endif 1043 vesa_adp->va_mode = mode; 1044 vesa_adp->va_flags &= ~V_ADP_COLOR; 1045 vesa_adp->va_flags |= 1046 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1047 vesa_adp->va_crtc_addr = 1048 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1049 if (info.vi_flags & V_INFO_LINEAR) { 1050#if VESA_DEBUG > 1 1051 printf("VESA: setting up LFB\n"); 1052#endif 1053 vesa_adp->va_buffer = 1054 vesa_map_buffer(info.vi_buffer, 1055 vesa_adp_info->v_memsize*64*1024); 1056 vesa_adp->va_buffer_size = info.vi_buffer_size; 1057 vesa_adp->va_window = vesa_adp->va_buffer; 1058 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes; 1059 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes; 1060 } else { 1061 vesa_adp->va_buffer = 0; 1062 vesa_adp->va_buffer_size = info.vi_buffer_size; 1063 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window); 1064 vesa_adp->va_window_size = info.vi_window_size; 1065 vesa_adp->va_window_gran = info.vi_window_gran; 1066 } 1067 vesa_adp->va_window_orig = 0; 1068 len = vesa_bios_get_line_length(); 1069 if (len > 0) { 1070 vesa_adp->va_line_width = len; 1071 } else if (info.vi_flags & V_INFO_GRAPHICS) { 1072 switch (info.vi_depth/info.vi_planes) { 1073 case 1: 1074 vesa_adp->va_line_width = info.vi_width/8; 1075 break; 1076 case 2: 1077 vesa_adp->va_line_width = info.vi_width/4; 1078 break; 1079 case 4: 1080 vesa_adp->va_line_width = info.vi_width/2; 1081 break; 1082 case 8: 1083 default: /* shouldn't happen */ 1084 vesa_adp->va_line_width = info.vi_width; 1085 break; 1086 } 1087 } else { 1088 vesa_adp->va_line_width = info.vi_width; 1089 } 1090 vesa_adp->va_disp_start.x = 0; 1091 vesa_adp->va_disp_start.y = 0; 1092#if VESA_DEBUG > 0 1093 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n", 1094 info.vi_width, len, vesa_adp->va_line_width); 1095#endif 1096 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info)); 1097 1098 /* move hardware cursor out of the way */ 1099 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1); 1100 1101 return 0; 1102} 1103 1104static int 1105vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1106 int ch, int count) 1107{ 1108 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count); 1109} 1110 1111static int 1112vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1113 int ch, int count) 1114{ 1115 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count); 1116} 1117 1118static int 1119vesa_show_font(video_adapter_t *adp, int page) 1120{ 1121 return (*prevvidsw->show_font)(adp, page); 1122} 1123 1124static int 1125vesa_save_palette(video_adapter_t *adp, u_char *palette) 1126{ 1127 int bits; 1128 int error; 1129 1130 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1131 && VESA_MODE(adp->va_mode)) { 1132 bits = vesa_bios_get_dac(); 1133 error = vesa_bios_save_palette(0, 256, palette, bits); 1134 if (error == 0) 1135 return 0; 1136 if (bits != 6) 1137 return error; 1138 } 1139 1140 return (*prevvidsw->save_palette)(adp, palette); 1141} 1142 1143static int 1144vesa_load_palette(video_adapter_t *adp, u_char *palette) 1145{ 1146#if notyet 1147 int bits; 1148 int error; 1149 1150 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8) 1151 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) { 1152 error = vesa_bios_load_palette(0, 256, palette, bits); 1153 if (error == 0) 1154 return 0; 1155 if (vesa_bios_set_dac(6) != 6) 1156 return 1; 1157 } 1158#endif /* notyet */ 1159 1160 return (*prevvidsw->load_palette)(adp, palette); 1161} 1162 1163static int 1164vesa_set_border(video_adapter_t *adp, int color) 1165{ 1166 return (*prevvidsw->set_border)(adp, color); 1167} 1168 1169static int 1170vesa_save_state(video_adapter_t *adp, void *p, size_t size) 1171{ 1172 if (adp != vesa_adp) 1173 return (*prevvidsw->save_state)(adp, p, size); 1174 1175 if (vesa_state_buf_size == 0) 1176 vesa_state_buf_size = vesa_bios_state_buf_size(); 1177 if (size == 0) 1178 return (sizeof(int) + vesa_state_buf_size); 1179 else if (size < (sizeof(int) + vesa_state_buf_size)) 1180 return 1; 1181 1182 ((adp_state_t *)p)->sig = V_STATE_SIG; 1183 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); 1184 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs, 1185 vesa_state_buf_size); 1186} 1187 1188static int 1189vesa_load_state(video_adapter_t *adp, void *p) 1190{ 1191 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) 1192 return (*prevvidsw->load_state)(adp, p); 1193 1194 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs, 1195 vesa_state_buf_size); 1196} 1197 1198#if 0 1199static int 1200vesa_get_origin(video_adapter_t *adp, off_t *offset) 1201{ 1202 struct vm86frame vmf; 1203 int err; 1204 1205 bzero(&vmf, sizeof(vmf)); 1206 vmf.vmf_eax = 0x4f05; 1207 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */ 1208 err = vm86_intcall(0x10, &vmf); 1209 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 1210 return 1; 1211 *offset = vmf.vmf_dx*adp->va_window_gran; 1212 return 0; 1213} 1214#endif 1215 1216static int 1217vesa_set_origin(video_adapter_t *adp, off_t offset) 1218{ 1219 struct vm86frame vmf; 1220 int err; 1221 1222 /* 1223 * This function should return as quickly as possible to 1224 * maintain good performance of the system. For this reason, 1225 * error checking is kept minimal and let the VESA BIOS to 1226 * detect error. 1227 */ 1228 if (adp != vesa_adp) 1229 return (*prevvidsw->set_win_org)(adp, offset); 1230 1231 /* if this is a linear frame buffer, do nothing */ 1232 if (adp->va_info.vi_flags & V_INFO_LINEAR) 1233 return 0; 1234 /* XXX */ 1235 if (adp->va_window_gran == 0) 1236 return 1; 1237 1238 bzero(&vmf, sizeof(vmf)); 1239 vmf.vmf_eax = 0x4f05; 1240 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */ 1241 vmf.vmf_edx = offset/adp->va_window_gran; 1242 err = vm86_intcall(0x10, &vmf); 1243 if ((err != 0) || (vmf.vmf_ax != 0x4f)) 1244 return 1; 1245 bzero(&vmf, sizeof(vmf)); 1246 vmf.vmf_eax = 0x4f05; 1247 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */ 1248 vmf.vmf_edx = offset/adp->va_window_gran; 1249 err = vm86_intcall(0x10, &vmf); 1250 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran; 1251 return 0; /* XXX */ 1252} 1253 1254static int 1255vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1256{ 1257 return (*prevvidsw->read_hw_cursor)(adp, col, row); 1258} 1259 1260static int 1261vesa_set_hw_cursor(video_adapter_t *adp, int col, int row) 1262{ 1263 return (*prevvidsw->set_hw_cursor)(adp, col, row); 1264} 1265 1266static int 1267vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 1268 int celsize, int blink) 1269{ 1270 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize, 1271 blink); 1272} 1273 1274static int 1275vesa_blank_display(video_adapter_t *adp, int mode) 1276{ 1277 /* XXX: use VESA DPMS */ 1278 return (*prevvidsw->blank_display)(adp, mode); 1279} 1280 1281static int 1282vesa_mmap(video_adapter_t *adp, vm_offset_t offset, int prot) 1283{ 1284#if VESA_DEBUG > 0 1285 printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n", 1286 adp->va_info.vi_window, adp->va_info.vi_buffer, offset); 1287#endif 1288 1289 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) { 1290 /* va_window_size == va_buffer_size/vi_planes */ 1291 /* XXX: is this correct? */ 1292 if (offset > adp->va_window_size - PAGE_SIZE) 1293 return -1; 1294#ifdef __i386__ 1295 return i386_btop(adp->va_info.vi_buffer + offset); 1296#endif 1297#ifdef __alpha__ /* XXX */ 1298 return alpha_btop(adp->va_info.vi_buffer + offset); 1299#endif 1300 } else { 1301 return (*prevvidsw->mmap)(adp, offset, prot); 1302 } 1303} 1304 1305static int 1306vesa_clear(video_adapter_t *adp) 1307{ 1308 return (*prevvidsw->clear)(adp); 1309} 1310 1311static int 1312vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 1313{ 1314 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy); 1315} 1316 1317static int 1318vesa_bitblt(video_adapter_t *adp,...) 1319{ 1320 /* FIXME */ 1321 return 1; 1322} 1323 1324static int 1325get_palette(video_adapter_t *adp, int base, int count, 1326 u_char *red, u_char *green, u_char *blue, u_char *trans) 1327{ 1328 u_char *r; 1329 u_char *g; 1330 u_char *b; 1331 int bits; 1332 int error; 1333 1334 if ((base < 0) || (base >= 256) || (base + count > 256)) 1335 return 1; 1336 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)) 1337 return 1; 1338 1339 bits = vesa_bios_get_dac(); 1340 if (bits <= 6) 1341 return 1; 1342 1343 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1344 g = r + count; 1345 b = g + count; 1346 error = vesa_bios_save_palette2(base, count, r, g, b, bits); 1347 if (error == 0) { 1348 copyout(r, red, count); 1349 copyout(g, green, count); 1350 copyout(b, blue, count); 1351 if (trans != NULL) { 1352 bzero(r, count); 1353 copyout(r, trans, count); 1354 } 1355 } 1356 free(r, M_DEVBUF); 1357 1358 /* if error && bits != 6 at this point, we are in in trouble... XXX */ 1359 return error; 1360} 1361 1362static int 1363set_palette(video_adapter_t *adp, int base, int count, 1364 u_char *red, u_char *green, u_char *blue, u_char *trans) 1365{ 1366 return 1; 1367#if notyet 1368 u_char *r; 1369 u_char *g; 1370 u_char *b; 1371 int bits; 1372 int error; 1373 1374 if ((base < 0) || (base >= 256) || (base + count > 256)) 1375 return 1; 1376 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode) 1377 || ((bits = vesa_bios_set_dac(8)) <= 6)) 1378 return 1; 1379 1380 r = malloc(count*3, M_DEVBUF, M_WAITOK); 1381 g = r + count; 1382 b = g + count; 1383 copyin(red, r, count); 1384 copyin(green, g, count); 1385 copyin(blue, b, count); 1386 1387 error = vesa_bios_load_palette2(base, count, r, g, b, bits); 1388 free(r, M_DEVBUF); 1389 if (error == 0) 1390 return 0; 1391 1392 /* if the following call fails, we are in trouble... XXX */ 1393 vesa_bios_set_dac(6); 1394 return 1; 1395#endif /* notyet */ 1396} 1397 1398static int 1399vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 1400{ 1401 int bytes; 1402 1403 if (adp != vesa_adp) 1404 return (*prevvidsw->ioctl)(adp, cmd, arg); 1405 1406 switch (cmd) { 1407 case FBIO_SETWINORG: /* set frame buffer window origin */ 1408 if (!VESA_MODE(adp->va_mode)) 1409 return (*prevvidsw->ioctl)(adp, cmd, arg); 1410 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0); 1411 1412 case FBIO_SETDISPSTART: /* set display start address */ 1413 if (!VESA_MODE(adp->va_mode)) 1414 return (*prevvidsw->ioctl)(adp, cmd, arg); 1415 if (vesa_bios_set_start(((video_display_start_t *)arg)->x, 1416 ((video_display_start_t *)arg)->y)) 1417 return ENODEV; 1418 adp->va_disp_start.x = ((video_display_start_t *)arg)->x; 1419 adp->va_disp_start.y = ((video_display_start_t *)arg)->y; 1420 return 0; 1421 1422 case FBIO_SETLINEWIDTH: /* set line length in pixel */ 1423 if (!VESA_MODE(adp->va_mode)) 1424 return (*prevvidsw->ioctl)(adp, cmd, arg); 1425 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL)) 1426 return ENODEV; 1427 adp->va_line_width = bytes; 1428#if VESA_DEBUG > 1 1429 printf("new line width:%d\n", adp->va_line_width); 1430#endif 1431 return 0; 1432 1433 case FBIO_GETPALETTE: /* get color palette */ 1434 if (get_palette(adp, ((video_color_palette_t *)arg)->index, 1435 ((video_color_palette_t *)arg)->count, 1436 ((video_color_palette_t *)arg)->red, 1437 ((video_color_palette_t *)arg)->green, 1438 ((video_color_palette_t *)arg)->blue, 1439 ((video_color_palette_t *)arg)->transparent)) 1440 return (*prevvidsw->ioctl)(adp, cmd, arg); 1441 return 0; 1442 1443 1444 case FBIO_SETPALETTE: /* set color palette */ 1445 if (set_palette(adp, ((video_color_palette_t *)arg)->index, 1446 ((video_color_palette_t *)arg)->count, 1447 ((video_color_palette_t *)arg)->red, 1448 ((video_color_palette_t *)arg)->green, 1449 ((video_color_palette_t *)arg)->blue, 1450 ((video_color_palette_t *)arg)->transparent)) 1451 return (*prevvidsw->ioctl)(adp, cmd, arg); 1452 return 0; 1453 1454 case FBIOGETCMAP: /* get color palette */ 1455 if (get_palette(adp, ((struct fbcmap *)arg)->index, 1456 ((struct fbcmap *)arg)->count, 1457 ((struct fbcmap *)arg)->red, 1458 ((struct fbcmap *)arg)->green, 1459 ((struct fbcmap *)arg)->blue, NULL)) 1460 return (*prevvidsw->ioctl)(adp, cmd, arg); 1461 return 0; 1462 1463 case FBIOPUTCMAP: /* set color palette */ 1464 if (set_palette(adp, ((struct fbcmap *)arg)->index, 1465 ((struct fbcmap *)arg)->count, 1466 ((struct fbcmap *)arg)->red, 1467 ((struct fbcmap *)arg)->green, 1468 ((struct fbcmap *)arg)->blue, NULL)) 1469 return (*prevvidsw->ioctl)(adp, cmd, arg); 1470 return 0; 1471 1472 default: 1473 return (*prevvidsw->ioctl)(adp, cmd, arg); 1474 } 1475} 1476 1477static int 1478vesa_diag(video_adapter_t *adp, int level) 1479{ 1480 int error; 1481 1482 /* call the previous handler first */ 1483 error = (*prevvidsw->diag)(adp, level); 1484 if (error) 1485 return error; 1486 1487 if (adp != vesa_adp) 1488 return 1; 1489 1490 if (level <= 0) 1491 return 0; 1492 1493 return 0; 1494} 1495 1496static int 1497vesa_bios_info(int level) 1498{ 1499#if VESA_DEBUG > 1 1500 struct vesa_mode vmode; 1501 int i; 1502#endif 1503 1504 /* general adapter information */ 1505 printf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n", 1506 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 1507 + ((vesa_adp_info->v_version & 0x0f00) >> 8), 1508 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 1509 + (vesa_adp_info->v_version & 0x000f), 1510 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags, 1511 vesa_vmodetab, vesa_adp_info->v_modetable); 1512 /* OEM string */ 1513 if (vesa_oemstr != NULL) 1514 printf("VESA: %s\n", vesa_oemstr); 1515 1516 if (level <= 0) 1517 return 0; 1518 1519 if (vesa_adp_info->v_version >= 0x0200) { 1520 /* vender name, product name, product revision */ 1521 printf("VESA: %s %s %s\n", 1522 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown", 1523 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown", 1524 (vesa_revstr != NULL) ? vesa_revstr : "?"); 1525 } 1526 1527#if VESA_DEBUG > 1 1528 /* mode information */ 1529 for (i = 0; 1530 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) 1531 && (vesa_vmodetab[i] != 0xffff); ++i) { 1532 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode)) 1533 continue; 1534 1535 /* print something for diagnostic purpose */ 1536 printf("VESA: mode:0x%03x, flags:0x%04x", 1537 vesa_vmodetab[i], vmode.v_modeattr); 1538 if (vmode.v_modeattr & V_MODEOPTINFO) { 1539 if (vmode.v_modeattr & V_MODEGRAPHICS) { 1540 printf(", G %dx%dx%d %d, ", 1541 vmode.v_width, vmode.v_height, 1542 vmode.v_bpp, vmode.v_planes); 1543 } else { 1544 printf(", T %dx%d, ", 1545 vmode.v_width, vmode.v_height); 1546 } 1547 printf("font:%dx%d, ", 1548 vmode.v_cwidth, vmode.v_cheight); 1549 printf("pages:%d, mem:%d", 1550 vmode.v_ipages + 1, vmode.v_memmodel); 1551 } 1552 if (vmode.v_modeattr & V_MODELFB) { 1553 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x", 1554 vmode.v_lfb, vmode.v_offscreen, 1555 vmode.v_offscreensize*1024); 1556 } 1557 printf("\n"); 1558 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ", 1559 vmode.v_waseg, vmode.v_waattr, 1560 vmode.v_wbseg, vmode.v_wbattr); 1561 printf("size:%dk, gran:%dk\n", 1562 vmode.v_wsize, vmode.v_wgran); 1563 } 1564#endif /* VESA_DEBUG > 1 */ 1565 1566 return 0; 1567} 1568 1569/* module loading */ 1570 1571static int 1572vesa_load(void) 1573{ 1574 int error; 1575 int s; 1576 1577 if (vesa_init_done) 1578 return 0; 1579 1580 /* locate a VGA adapter */ 1581 s = spltty(); 1582 vesa_adp = NULL; 1583 error = vesa_configure(0); 1584 splx(s); 1585 1586 if (error == 0) 1587 vesa_bios_info(bootverbose); 1588 1589 return error; 1590} 1591 1592static int 1593vesa_unload(void) 1594{ 1595 u_char palette[256*3]; 1596 int error; 1597 int bits; 1598 int s; 1599 1600 /* if the adapter is currently in a VESA mode, don't unload */ 1601 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode)) 1602 return EBUSY; 1603 /* 1604 * FIXME: if there is at least one vty which is in a VESA mode, 1605 * we shouldn't be unloading! XXX 1606 */ 1607 1608 s = spltty(); 1609 if ((error = vesa_unload_ioctl()) == 0) { 1610 if (vesa_adp != NULL) { 1611 if (vesa_adp_info->v_flags & V_DAC8) { 1612 bits = vesa_bios_get_dac(); 1613 if (bits > 6) { 1614 vesa_bios_save_palette(0, 256, 1615 palette, bits); 1616 vesa_bios_set_dac(6); 1617 vesa_bios_load_palette(0, 256, 1618 palette, 6); 1619 } 1620 } 1621 vesa_adp->va_flags &= ~V_ADP_VESA; 1622 vidsw[vesa_adp->va_index] = prevvidsw; 1623 } 1624 } 1625 splx(s); 1626 1627 return error; 1628} 1629 1630static int 1631vesa_mod_event(module_t mod, int type, void *data) 1632{ 1633 switch (type) { 1634 case MOD_LOAD: 1635 return vesa_load(); 1636 case MOD_UNLOAD: 1637 return vesa_unload(); 1638 default: 1639 break; 1640 } 1641 return 0; 1642} 1643 1644static moduledata_t vesa_mod = { 1645 "vesa", 1646 vesa_mod_event, 1647 NULL, 1648}; 1649 1650DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 1651 1652#endif /* VGA_NO_MODE_CHANGE */ 1653