vga_isa.c revision 47618
1/*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * Copyright (c) 1992-1998 S�ren Schmidt 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer as 11 * the first lines of this file unmodified. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $Id: vga_isa.c,v 1.8 1999/05/09 16:39:24 peter Exp $ 30 */ 31 32#include "vga.h" 33#include "opt_vga.h" 34#include "opt_fb.h" 35#include "opt_syscons.h" /* should be removed in the future, XXX */ 36 37#if NVGA > 0 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> 42#include <sys/bus.h> 43#include <sys/malloc.h> 44 45#include <vm/vm.h> 46#include <vm/pmap.h> 47 48#include <machine/console.h> 49#include <machine/md_var.h> 50#include <machine/pc/bios.h> 51 52#include <dev/fb/fbreg.h> 53#include <dev/fb/vgareg.h> 54 55#include <isa/isareg.h> 56#include <isa/isavar.h> 57 58#define DRIVER_NAME "vga" 59 60/* cdev driver declaration */ 61 62#define ISAVGA_UNIT(dev) minor(dev) 63#define ISAVGA_MKMINOR(unit) (unit) 64 65typedef struct isavga_softc { 66 video_adapter_t *adp; 67} isavga_softc_t; 68 69#define ISAVGA_SOFTC(unit) \ 70 ((isavga_softc_t *)devclass_get_softc(isavga_devclass, unit)) 71 72devclass_t isavga_devclass; 73 74static int isavga_probe(device_t dev); 75static int isavga_attach(device_t dev); 76 77static device_method_t isavga_methods[] = { 78 DEVMETHOD(device_probe, isavga_probe), 79 DEVMETHOD(device_attach, isavga_attach), 80 { 0, 0 } 81}; 82 83static driver_t isavga_driver = { 84 DRIVER_NAME, 85 isavga_methods, 86 sizeof(isavga_softc_t), 87}; 88 89DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0); 90 91static int isavga_probe_unit(int unit, isavga_softc_t *sc, 92 int flags); 93static int isavga_attach_unit(int unit, isavga_softc_t *sc, 94 int flags); 95 96#ifdef FB_INSTALL_CDEV 97 98static d_open_t isavgaopen; 99static d_close_t isavgaclose; 100static d_read_t isavgaread; 101static d_ioctl_t isavgaioctl; 102 103static struct cdevsw vga_cdevsw = { 104 isavgaopen, isavgaclose, noread, nowrite, /* ?? */ 105 isavgaioctl, nostop, nullreset, nodevtotty, 106 seltrue, nommap, NULL, DRIVER_NAME, 107 NULL, -1, nodump, nopsize, 108}; 109 110#endif /* FB_INSTALL_CDEV */ 111 112static int 113isavga_probe(device_t dev) 114{ 115 isavga_softc_t *sc; 116 117 /* No pnp support */ 118 if (isa_get_vendorid(dev)) 119 return (ENXIO); 120 121 device_set_desc(dev, "Generic ISA VGA"); 122 sc = device_get_softc(dev); 123 return isavga_probe_unit(device_get_unit(dev), sc, isa_get_flags(dev)); 124} 125 126static int 127isavga_attach(device_t dev) 128{ 129 isavga_softc_t *sc; 130 131 sc = device_get_softc(dev); 132 return isavga_attach_unit(device_get_unit(dev), sc, isa_get_flags(dev)); 133} 134 135static int 136isavga_probe_unit(int unit, isavga_softc_t *sc, int flags) 137{ 138 video_switch_t *sw; 139 140 bzero(sc, sizeof(*sc)); 141 sw = vid_get_switch(DRIVER_NAME); 142 if (sw == NULL) 143 return 0; 144 return (*sw->probe)(unit, &sc->adp, NULL, flags); 145} 146 147static int 148isavga_attach_unit(int unit, isavga_softc_t *sc, int flags) 149{ 150 video_switch_t *sw; 151 int error; 152 153 sw = vid_get_switch(DRIVER_NAME); 154 if (sw == NULL) 155 return ENXIO; 156 157 error = (*sw->init)(unit, sc->adp, flags); 158 if (error) 159 return ENXIO; 160 161#ifdef FB_INSTALL_CDEV 162 /* attach a virtual frame buffer device */ 163 error = fb_attach(makedev(0, ISAVGA_MKMINOR(unit)), scp->adp, 164 &vga_cdevsw); 165 if (error) 166 return error; 167#endif /* FB_INSTALL_CDEV */ 168 169 if (bootverbose) 170 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); 171 172 return 0; 173} 174 175/* LOW-LEVEL */ 176 177#include <machine/clock.h> 178#include <machine/pc/vesa.h> 179 180#define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED) 181#define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED) 182#define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED) 183 184/* for compatibility with old kernel options */ 185#ifdef SC_ALT_SEQACCESS 186#undef SC_ALT_SEQACCESS 187#undef VGA_ALT_SEQACCESS 188#define VGA_ALT_SEQACCESS 1 189#endif 190 191#ifdef SLOW_VGA 192#undef SLOW_VGA 193#undef VGA_SLOW_IOACCESS 194#define VGA_SLOW_IOACCESS 1 195#endif 196 197/* architecture dependent option */ 198#ifdef __alpha__ 199#define VGA_NO_BIOS 1 200#endif 201 202/* this should really be in `rtc.h' */ 203#define RTC_EQUIPMENT 0x14 204 205/* various sizes */ 206#define V_MODE_MAP_SIZE (M_VGA_CG320 + 1) 207#define V_MODE_PARAM_SIZE 64 208 209/* video adapter state buffer */ 210struct adp_state { 211 int sig; 212#define V_STATE_SIG 0x736f6962 213 u_char regs[V_MODE_PARAM_SIZE]; 214}; 215typedef struct adp_state adp_state_t; 216 217/* video adapter information */ 218#define DCC_MONO 0 219#define DCC_CGA40 1 220#define DCC_CGA80 2 221#define DCC_EGAMONO 3 222#define DCC_EGA40 4 223#define DCC_EGA80 5 224 225/* 226 * NOTE: `va_window' should have a virtual address, but is initialized 227 * with a physical address in the following table, as verify_adapter() 228 * will perform address conversion at run-time. 229 */ 230static video_adapter_t adapter_init_value[] = { 231 /* DCC_MONO */ 232 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC, 233 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 234 0, 0, 0, 7, 0, }, 235 /* DCC_CGA40 */ 236 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 237 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 238 0, 0, 0, 3, 0, }, 239 /* DCC_CGA80 */ 240 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 241 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 242 0, 0, 0, 3, 0, }, 243 /* DCC_EGAMONO */ 244 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC, 245 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 246 0, 0, 0, 7, 0, }, 247 /* DCC_EGA40 */ 248 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 249 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 250 0, 0, 0, 3, 0, }, 251 /* DCC_EGA80 */ 252 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 253 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 254 0, 0, 0, 3, 0, }, 255}; 256 257static video_adapter_t biosadapter[2]; 258static int biosadapters = 0; 259 260/* video driver declarations */ 261static int vga_configure(int flags); 262 int (*vga_sub_configure)(int flags); 263static int vga_nop(void); 264static vi_probe_t vga_probe; 265static vi_init_t vga_init; 266static vi_get_info_t vga_get_info; 267static vi_query_mode_t vga_query_mode; 268static vi_set_mode_t vga_set_mode; 269static vi_save_font_t vga_save_font; 270static vi_load_font_t vga_load_font; 271static vi_show_font_t vga_show_font; 272static vi_save_palette_t vga_save_palette; 273static vi_load_palette_t vga_load_palette; 274static vi_set_border_t vga_set_border; 275static vi_save_state_t vga_save_state; 276static vi_load_state_t vga_load_state; 277static vi_set_win_org_t vga_set_origin; 278static vi_read_hw_cursor_t vga_read_hw_cursor; 279static vi_set_hw_cursor_t vga_set_hw_cursor; 280static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape; 281static vi_mmap_t vga_mmap; 282static vi_diag_t vga_diag; 283 284static video_switch_t vgavidsw = { 285 vga_probe, 286 vga_init, 287 vga_get_info, 288 vga_query_mode, 289 vga_set_mode, 290 vga_save_font, 291 vga_load_font, 292 vga_show_font, 293 vga_save_palette, 294 vga_load_palette, 295 vga_set_border, 296 vga_save_state, 297 vga_load_state, 298 vga_set_origin, 299 vga_read_hw_cursor, 300 vga_set_hw_cursor, 301 vga_set_hw_cursor_shape, 302 (vi_blank_display_t *)vga_nop, 303 vga_mmap, 304 vga_diag, 305}; 306 307VIDEO_DRIVER(mda, vgavidsw, NULL); 308VIDEO_DRIVER(cga, vgavidsw, NULL); 309VIDEO_DRIVER(ega, vgavidsw, NULL); 310VIDEO_DRIVER(vga, vgavidsw, vga_configure); 311 312/* VGA BIOS standard video modes */ 313#define EOT (-1) 314#define NA (-2) 315 316static video_info_t bios_vmode[] = { 317 /* CGA */ 318 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1, 319 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 320 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, 321 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 322 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, 323 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 324 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, 325 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 326 /* EGA */ 327 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, 328 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 329 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, 330 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 331 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, 332 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 333 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, 334 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 335 /* VGA */ 336 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, 337 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 338 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, 339 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 340 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, 341 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 342 /* MDA */ 343 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, 344 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 345 /* EGA */ 346 { M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1, 347 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 348 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, 349 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 350 /* VGA */ 351 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, 352 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 353 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, 354 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 355 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, 356 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 357 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, 358 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 359 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, 360 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 361 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, 362 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 363#ifndef VGA_NO_MODE_CHANGE 364 /* CGA */ 365 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 366 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 367 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 368 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 369 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1, 370 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 371 /* EGA */ 372 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4, 373 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 374 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4, 375 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 376 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 377 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 }, 378 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 379 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 380 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2, 381 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 382 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 383 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 384 /* VGA */ 385 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 386 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 387 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 388 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 389 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1, 390 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 391 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 1, 392 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 393#endif /* VGA_NO_MODE_CHANGE */ 394 395 { EOT }, 396}; 397 398static int init_done = FALSE; 399#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 400static u_char *video_mode_ptr = NULL; /* EGA/VGA */ 401static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */ 402#endif 403static u_char *mode_map[V_MODE_MAP_SIZE]; 404static adp_state_t adpstate; 405static adp_state_t adpstate2; 406static int rows_offset = 1; 407 408/* local macros and functions */ 409#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 410 411#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 412static void map_mode_table(u_char *map[], u_char *table, int max); 413#endif 414static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max, 415 int color); 416#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 417static int map_mode_num(int mode); 418#endif 419static int map_gen_mode_num(int type, int color, int mode); 420static int map_bios_mode_num(int type, int color, int bios_mode); 421static u_char *get_mode_param(int mode); 422#ifndef VGA_NO_BIOS 423static void fill_adapter_param(int code, video_adapter_t *adp); 424#endif 425static int verify_adapter(video_adapter_t *adp); 426static void update_adapter_info(video_adapter_t *adp, video_info_t *info); 427#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 428#define COMP_IDENTICAL 0 429#define COMP_SIMILAR 1 430#define COMP_DIFFERENT 2 431static int comp_adpregs(u_char *buf1, u_char *buf2); 432#endif 433static int probe_adapters(void); 434 435#ifndef VGA_NO_FONT_LOADING 436#define PARAM_BUFSIZE 6 437static void set_font_mode(video_adapter_t *adp, u_char *buf); 438static void set_normal_mode(video_adapter_t *adp, u_char *buf); 439#endif 440 441static void dump_buffer(u_char *buf, size_t len); 442 443#define ISMAPPED(pa, width) \ 444 (((pa) <= (u_long)0x1000 - (width)) \ 445 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width))) 446 447#define prologue(adp, flag, err) \ 448 if (!init_done || !((adp)->va_flags & (flag))) \ 449 return (err) 450 451/* a backdoor for the console driver */ 452static int 453vga_configure(int flags) 454{ 455 int i; 456 457 probe_adapters(); 458 for (i = 0; i < biosadapters; ++i) { 459 if (!probe_done(&biosadapter[i])) 460 continue; 461 biosadapter[i].va_flags |= V_ADP_INITIALIZED; 462 if (!config_done(&biosadapter[i])) { 463 if (vid_register(&biosadapter[i]) < 0) 464 continue; 465 biosadapter[i].va_flags |= V_ADP_REGISTERED; 466 } 467 } 468 if (vga_sub_configure != NULL) 469 (*vga_sub_configure)(flags); 470 471 return biosadapters; 472} 473 474/* local subroutines */ 475 476#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 477/* construct the mode parameter map */ 478static void 479map_mode_table(u_char *map[], u_char *table, int max) 480{ 481 int i; 482 483 for(i = 0; i < max; ++i) 484 map[i] = table + i*V_MODE_PARAM_SIZE; 485 for(; i < V_MODE_MAP_SIZE; ++i) 486 map[i] = NULL; 487} 488#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 489 490static void 491clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color) 492{ 493 video_info_t info; 494 int i; 495 496 /* 497 * NOTE: we don't touch `bios_vmode[]' because it is shared 498 * by all adapters. 499 */ 500 for(i = 0; i < max; ++i) { 501 if (vga_get_info(adp, i, &info)) 502 continue; 503 if ((info.vi_flags & V_INFO_COLOR) != color) 504 map[i] = NULL; 505 } 506} 507 508#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 509/* map the non-standard video mode to a known mode number */ 510static int 511map_mode_num(int mode) 512{ 513 static struct { 514 int from; 515 int to; 516 } mode_map[] = { 517 { M_ENH_B80x43, M_ENH_B80x25 }, 518 { M_ENH_C80x43, M_ENH_C80x25 }, 519 { M_VGA_M80x30, M_VGA_M80x25 }, 520 { M_VGA_C80x30, M_VGA_C80x25 }, 521 { M_VGA_M80x50, M_VGA_M80x25 }, 522 { M_VGA_C80x50, M_VGA_C80x25 }, 523 { M_VGA_M80x60, M_VGA_M80x25 }, 524 { M_VGA_C80x60, M_VGA_C80x25 }, 525 { M_VGA_MODEX, M_VGA_CG320 }, 526 }; 527 int i; 528 529 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 530 if (mode_map[i].from == mode) 531 return mode_map[i].to; 532 } 533 return mode; 534} 535#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 536 537/* map a generic video mode to a known mode number */ 538static int 539map_gen_mode_num(int type, int color, int mode) 540{ 541 static struct { 542 int from; 543 int to_color; 544 int to_mono; 545 } mode_map[] = { 546 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, }, 547 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, }, 548 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, }, 549 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, }, 550 }; 551 int i; 552 553 if (mode == M_TEXT_80x25) { 554 switch (type) { 555 556 case KD_VGA: 557 if (color) 558 return M_VGA_C80x25; 559 else 560 return M_VGA_M80x25; 561 break; 562 563 case KD_EGA: 564 if (color) 565 return M_ENH_C80x25; 566 else 567 return M_EGAMONO80x25; 568 break; 569 570 case KD_CGA: 571 return M_C80x25; 572 573 case KD_MONO: 574 case KD_HERCULES: 575 return M_EGAMONO80x25; /* XXX: this name is confusing */ 576 577 default: 578 return -1; 579 } 580 } 581 582 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 583 if (mode_map[i].from == mode) 584 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono); 585 } 586 return mode; 587} 588 589/* turn the BIOS video number into our video mode number */ 590static int 591map_bios_mode_num(int type, int color, int bios_mode) 592{ 593 static int cga_modes[7] = { 594 M_B40x25, M_C40x25, /* 0, 1 */ 595 M_B80x25, M_C80x25, /* 2, 3 */ 596 M_BG320, M_CG320, 597 M_BG640, 598 }; 599 static int ega_modes[17] = { 600 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */ 601 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */ 602 M_BG320, M_CG320, 603 M_BG640, 604 M_EGAMONO80x25, /* 7 */ 605 8, 9, 10, 11, 12, 606 M_CG320_D, 607 M_CG640_E, 608 M_ENHMONOAPA2, /* XXX: video momery > 64K */ 609 M_ENH_CG640, /* XXX: video momery > 64K */ 610 }; 611 static int vga_modes[20] = { 612 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */ 613 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */ 614 M_BG320, M_CG320, 615 M_BG640, 616 M_VGA_M80x25, /* 7 */ 617 8, 9, 10, 11, 12, 618 M_CG320_D, 619 M_CG640_E, 620 M_ENHMONOAPA2, 621 M_ENH_CG640, 622 M_BG640x480, M_CG640x480, 623 M_VGA_CG320, 624 }; 625 626 switch (type) { 627 628 case KD_VGA: 629 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0])) 630 return vga_modes[bios_mode]; 631 else if (color) 632 return M_VGA_C80x25; 633 else 634 return M_VGA_M80x25; 635 break; 636 637 case KD_EGA: 638 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0])) 639 return ega_modes[bios_mode]; 640 else if (color) 641 return M_ENH_C80x25; 642 else 643 return M_EGAMONO80x25; 644 break; 645 646 case KD_CGA: 647 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0])) 648 return cga_modes[bios_mode]; 649 else 650 return M_C80x25; 651 break; 652 653 case KD_MONO: 654 case KD_HERCULES: 655 return M_EGAMONO80x25; /* XXX: this name is confusing */ 656 657 default: 658 break; 659 } 660 return -1; 661} 662 663/* look up a parameter table entry */ 664static u_char 665*get_mode_param(int mode) 666{ 667#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 668 if (mode >= V_MODE_MAP_SIZE) 669 mode = map_mode_num(mode); 670#endif 671 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE)) 672 return mode_map[mode]; 673 else 674 return NULL; 675} 676 677#ifndef VGA_NO_BIOS 678static void 679fill_adapter_param(int code, video_adapter_t *adp) 680{ 681 static struct { 682 int primary; 683 int secondary; 684 } dcc[] = { 685 { DCC_MONO, DCC_EGA40 /* CGA monitor */ }, 686 { DCC_MONO, DCC_EGA80 /* CGA monitor */ }, 687 { DCC_MONO, DCC_EGA80 /* CGA emulation */ }, 688 { DCC_MONO, DCC_EGA80 }, 689 { DCC_CGA40, DCC_EGAMONO }, 690 { DCC_CGA80, DCC_EGAMONO }, 691 { DCC_EGA40 /* CGA monitor */, DCC_MONO}, 692 { DCC_EGA80 /* CGA monitor */, DCC_MONO}, 693 { DCC_EGA80 /* CGA emulation */,DCC_MONO }, 694 { DCC_EGA80, DCC_MONO }, 695 { DCC_EGAMONO, DCC_CGA40 }, 696 { DCC_EGAMONO, DCC_CGA40 }, 697 }; 698 699 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) { 700 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 701 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 702 } else { 703 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary]; 704 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary]; 705 } 706} 707#endif /* VGA_NO_BIOS */ 708 709static int 710verify_adapter(video_adapter_t *adp) 711{ 712 vm_offset_t buf; 713 u_int16_t v; 714#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 715 u_int32_t p; 716#endif 717 718 buf = BIOS_PADDRTOVADDR(adp->va_window); 719 v = readw(buf); 720 writew(buf, 0xA55A); 721 if (readw(buf) != 0xA55A) 722 return 1; 723 writew(buf, v); 724 725 switch (adp->va_type) { 726 727 case KD_EGA: 728 outb(adp->va_crtc_addr, 7); 729 if (inb(adp->va_crtc_addr) == 7) { 730 adp->va_type = KD_VGA; 731 adp->va_name = "vga"; 732 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; 733 } 734 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER; 735 /* the color adapter may be in the 40x25 mode... XXX */ 736 737#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 738 /* get the BIOS video mode pointer */ 739 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8); 740 p = BIOS_SADDRTOLADDR(p); 741 if (ISMAPPED(p, sizeof(u_int32_t))) { 742 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p); 743 p = BIOS_SADDRTOLADDR(p); 744 if (ISMAPPED(p, V_MODE_PARAM_SIZE)) 745 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p); 746 } 747#endif 748 break; 749 750 case KD_CGA: 751 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; 752 /* may be in the 40x25 mode... XXX */ 753#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 754 /* get the BIOS video mode pointer */ 755 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 756 p = BIOS_SADDRTOLADDR(p); 757 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 758#endif 759 break; 760 761 case KD_MONO: 762#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 763 /* get the BIOS video mode pointer */ 764 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 765 p = BIOS_SADDRTOLADDR(p); 766 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 767#endif 768 break; 769 } 770 771 return 0; 772} 773 774static void 775update_adapter_info(video_adapter_t *adp, video_info_t *info) 776{ 777 adp->va_flags &= ~V_ADP_COLOR; 778 adp->va_flags |= 779 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 780 adp->va_crtc_addr = 781 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 782 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window); 783 adp->va_window_size = info->vi_window_size; 784 adp->va_window_gran = info->vi_window_gran; 785 if (info->vi_buffer_size == 0) { 786 adp->va_buffer = 0; 787 adp->va_buffer_size = 0; 788 } else { 789 adp->va_buffer = BIOS_PADDRTOVADDR(info->vi_buffer); 790 adp->va_buffer_size = info->vi_buffer_size; 791 } 792 if (info->vi_flags & V_INFO_GRAPHICS) { 793 switch (info->vi_depth/info->vi_planes) { 794 case 1: 795 adp->va_line_width = info->vi_width/8; 796 break; 797 case 2: 798 adp->va_line_width = info->vi_width/4; 799 break; 800 case 4: 801 adp->va_line_width = info->vi_width/2; 802 break; 803 case 8: 804 default: /* shouldn't happen */ 805 adp->va_line_width = info->vi_width; 806 break; 807 } 808 } else { 809 adp->va_line_width = info->vi_width; 810 } 811 bcopy(info, &adp->va_info, sizeof(adp->va_info)); 812} 813 814#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 815/* compare two parameter table entries */ 816static int 817comp_adpregs(u_char *buf1, u_char *buf2) 818{ 819 static struct { 820 u_char mask; 821 } params[V_MODE_PARAM_SIZE] = { 822 {0xff}, {0x00}, {0xff}, /* COLS, ROWS, POINTS */ 823 {0x00}, {0x00}, /* page length */ 824 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */ 825 {0xf3}, /* misc register */ 826 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */ 827 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, 828 {0x00}, {0x00}, {0x00}, {0x00}, {0x00}, 829 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff}, 830 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff}, 831 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */ 832 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, 833 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, 834 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0}, 835 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */ 836 {0xff}, {0xff}, {0xff}, {0xff}, 837 }; 838 int identical = TRUE; 839 int i; 840 841 if ((buf1 == NULL) || (buf2 == NULL)) 842 return COMP_DIFFERENT; 843 844 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 845 if (params[i].mask == 0) /* don't care */ 846 continue; 847 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 848 return COMP_DIFFERENT; 849 if (buf1[i] != buf2[i]) 850 identical = FALSE; 851 } 852 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 853} 854#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 855 856/* probe video adapters and return the number of detected adapters */ 857static int 858probe_adapters(void) 859{ 860 video_adapter_t *adp; 861 video_info_t info; 862 int i; 863 864 /* do this test only once */ 865 if (init_done) 866 return biosadapters; 867 init_done = TRUE; 868 869 /* 870 * Locate display adapters. 871 * The AT architecture supports upto two adapters. `syscons' allows 872 * the following combinations of adapters: 873 * 1) MDA + CGA 874 * 2) MDA + EGA/VGA color 875 * 3) CGA + EGA/VGA mono 876 * Note that `syscons' doesn't bother with MCGA as it is only 877 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 878 * thus, they are not running FreeBSD! 879 * When there are two adapaters in the system, one becomes `primary' 880 * and the other `secondary'. The EGA adapter has a set of DIP 881 * switches on board for this information and the EGA BIOS copies 882 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 883 * The VGA BIOS has more sophisticated mechanism and has this 884 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 885 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 886 */ 887 888 /* 889 * Check rtc and BIOS data area. 890 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 891 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 892 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 893 * these bits in BIOSDATA_EQUIPMENT according to the monitor 894 * type detected. 895 */ 896#ifndef VGA_NO_BIOS 897 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 898 case 0: 899 /* EGA/VGA */ 900 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 901 biosadapter); 902 break; 903 case 1: 904 /* CGA 40x25 */ 905 /* FIXME: switch to the 80x25 mode? XXX */ 906 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 907 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 908 break; 909 case 2: 910 /* CGA 80x25 */ 911 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 912 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 913 break; 914 case 3: 915 /* MDA */ 916 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 917 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 918 break; 919 } 920#else 921 /* assume EGA/VGA? XXX */ 922 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 923 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 924#endif /* VGA_NO_BIOS */ 925 926 biosadapters = 0; 927 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 928 ++biosadapters; 929 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 930 biosadapter[V_ADP_SECONDARY].va_mode = 931 biosadapter[V_ADP_SECONDARY].va_initial_mode = 932 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 933 biosadapter[V_ADP_SECONDARY].va_flags 934 & V_ADP_COLOR, 935 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 936 } else { 937 biosadapter[V_ADP_SECONDARY].va_type = -1; 938 } 939 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 940 ++biosadapters; 941 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 942#ifndef VGA_NO_BIOS 943 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 944 readb(BIOS_PADDRTOVADDR(0x449)); 945#else 946 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 947#endif 948 biosadapter[V_ADP_PRIMARY].va_mode = 949 biosadapter[V_ADP_PRIMARY].va_initial_mode = 950 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 951 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 952 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 953 } else { 954 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 955 biosadapter[V_ADP_SECONDARY].va_type = -1; 956 } 957 if (biosadapters == 0) 958 return biosadapters; 959 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 960 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 961 962#if 0 /* we don't need these... */ 963 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 964 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 965#endif 966 967#if 0 968 /* 969 * We cannot have two video adapter of the same type; there must be 970 * only one of color or mono adapter, or one each of them. 971 */ 972 if (biosadapters > 1) { 973 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 974 & V_ADP_COLOR)) 975 /* we have two mono or color adapters!! */ 976 return (biosadapters = 0); 977 } 978#endif 979 980 /* 981 * Ensure a zero start address. This is mainly to recover after 982 * switching from pcvt using userconfig(). The registers are w/o 983 * for old hardware so it's too hard to relocate the active screen 984 * memory. 985 * This must be done before vga_save_state() for VGA. 986 */ 987 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 988 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 989 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 990 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 991 992 /* the video mode parameter table in EGA/VGA BIOS */ 993 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 994 * recognized by the video BIOS. 995 */ 996 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 997 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 998 adp = &biosadapter[V_ADP_PRIMARY]; 999 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 1000 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 1001 adp = &biosadapter[V_ADP_SECONDARY]; 1002 } else { 1003 adp = NULL; 1004 } 1005 bzero(mode_map, sizeof(mode_map)); 1006 if (adp != NULL) { 1007 if (adp->va_type == KD_VGA) { 1008 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1009#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1010 mode_map[adp->va_initial_mode] = adpstate.regs; 1011 rows_offset = 1; 1012#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1013 if (video_mode_ptr == NULL) { 1014 mode_map[adp->va_initial_mode] = adpstate.regs; 1015 rows_offset = 1; 1016 } else { 1017 /* discard the table if we are not familiar with it... */ 1018 u_char *mp; 1019 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1020 mp = get_mode_param(adp->va_initial_mode); 1021 if (mp != NULL) 1022 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1023 switch (comp_adpregs(adpstate.regs, mp)) { 1024 case COMP_IDENTICAL: 1025 /* 1026 * OK, this parameter table looks reasonably familiar 1027 * to us... 1028 */ 1029 /* 1030 * This is a kludge for Toshiba DynaBook SS433 1031 * whose BIOS video mode table entry has the actual # 1032 * of rows at the offset 1; BIOSes from other 1033 * manufacturers store the # of rows - 1 there. XXX 1034 */ 1035 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1036 break; 1037 1038 case COMP_SIMILAR: 1039 /* 1040 * Not exactly the same, but similar enough to be 1041 * trusted. However, use the saved register values 1042 * for the initial mode and other modes which are 1043 * based on the initial mode. 1044 */ 1045 mode_map[adp->va_initial_mode] = adpstate.regs; 1046 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1047 adpstate.regs[1] -= rows_offset - 1; 1048 break; 1049 1050 case COMP_DIFFERENT: 1051 default: 1052 /* 1053 * Don't use the paramter table in BIOS. It doesn't 1054 * look familiar to us. Video mode switching is allowed 1055 * only if the new mode is the same as or based on 1056 * the initial mode. 1057 */ 1058 video_mode_ptr = NULL; 1059 bzero(mode_map, sizeof(mode_map)); 1060 mode_map[adp->va_initial_mode] = adpstate.regs; 1061 rows_offset = 1; 1062 break; 1063 } 1064 } 1065#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1066 1067#ifndef VGA_NO_MODE_CHANGE 1068 adp->va_flags |= V_ADP_MODECHANGE; 1069#endif 1070#ifndef VGA_NO_FONT_LOADING 1071 adp->va_flags |= V_ADP_FONT; 1072#endif 1073 } else if (adp->va_type == KD_EGA) { 1074#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1075 rows_offset = 1; 1076#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1077 if (video_mode_ptr == NULL) { 1078 rows_offset = 1; 1079 } else { 1080 u_char *mp; 1081 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1082 /* XXX how can one validate the EGA table... */ 1083 mp = get_mode_param(adp->va_initial_mode); 1084 if (mp != NULL) { 1085 adp->va_flags |= V_ADP_MODECHANGE; 1086#ifndef VGA_NO_FONT_LOADING 1087 adp->va_flags |= V_ADP_FONT; 1088#endif 1089 rows_offset = 1; 1090 } else { 1091 /* 1092 * This is serious. We will not be able to switch video 1093 * modes at all... 1094 */ 1095 video_mode_ptr = NULL; 1096 bzero(mode_map, sizeof(mode_map)); 1097 rows_offset = 1; 1098 } 1099 } 1100#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1101 } 1102 } 1103 1104 /* remove conflicting modes if we have more than one adapter */ 1105 if (biosadapters > 1) { 1106 for (i = 0; i < biosadapters; ++i) { 1107 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1108 continue; 1109 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1110 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1111 V_INFO_COLOR : 0); 1112 if ((biosadapter[i].va_type == KD_VGA) 1113 || (biosadapter[i].va_type == KD_EGA)) { 1114 biosadapter[i].va_io_base = 1115 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1116 IO_VGA : IO_MDA; 1117 biosadapter[i].va_io_size = 32; 1118 } 1119 } 1120 } 1121 1122 /* buffer address */ 1123 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1124 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1125 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); 1126 1127 if (biosadapters > 1) { 1128 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1129 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1130 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); 1131 } 1132 1133 /* 1134 * XXX: we should verify the following values for the primary adapter... 1135 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1136 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1137 * ? 0 : V_ADP_COLOR; 1138 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1139 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1140 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1141 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1142 */ 1143 1144 return biosadapters; 1145} 1146 1147/* entry points */ 1148 1149static int 1150vga_nop(void) 1151{ 1152 return 0; 1153} 1154 1155static int 1156vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1157{ 1158 probe_adapters(); 1159 if (unit >= biosadapters) 1160 return ENXIO; 1161 1162 *adpp = &biosadapter[unit]; 1163 1164 return 0; 1165} 1166 1167static int 1168vga_init(int unit, video_adapter_t *adp, int flags) 1169{ 1170 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1171 return ENXIO; 1172 1173 if (!init_done(adp)) { 1174 /* nothing to do really... */ 1175 adp->va_flags |= V_ADP_INITIALIZED; 1176 } 1177 1178 if (!config_done(adp)) { 1179 if (vid_register(adp) < 0) 1180 return ENXIO; 1181 adp->va_flags |= V_ADP_REGISTERED; 1182 } 1183 if (vga_sub_configure != NULL) 1184 (*vga_sub_configure)(0); 1185 1186 return 0; 1187} 1188 1189/* 1190 * get_info(): 1191 * Return the video_info structure of the requested video mode. 1192 * 1193 * all adapters 1194 */ 1195static int 1196vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1197{ 1198 int i; 1199 1200 if (!init_done) 1201 return 1; 1202 1203 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1204#ifndef VGA_NO_MODE_CHANGE 1205 if (adp->va_flags & V_ADP_MODECHANGE) { 1206 /* 1207 * If the parameter table entry for this mode is not found, 1208 * the mode is not supported... 1209 */ 1210 if (get_mode_param(mode) == NULL) 1211 return 1; 1212 } else 1213#endif /* VGA_NO_MODE_CHANGE */ 1214 { 1215 /* 1216 * Even if we don't support video mode switching on this adapter, 1217 * the information on the initial (thus current) video mode 1218 * should be made available. 1219 */ 1220 if (mode != adp->va_initial_mode) 1221 return 1; 1222 } 1223 1224 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1225 if (bios_vmode[i].vi_mode == NA) 1226 continue; 1227 if (mode == bios_vmode[i].vi_mode) { 1228 *info = bios_vmode[i]; 1229 return 0; 1230 } 1231 } 1232 return 1; 1233} 1234 1235/* 1236 * query_mode(): 1237 * Find a video mode matching the requested parameters. 1238 * Fields filled with 0 are considered "don't care" fields and 1239 * match any modes. 1240 * 1241 * all adapters 1242 */ 1243static int 1244vga_query_mode(video_adapter_t *adp, video_info_t *info) 1245{ 1246 video_info_t buf; 1247 int i; 1248 1249 if (!init_done) 1250 return -1; 1251 1252 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1253 if (bios_vmode[i].vi_mode == NA) 1254 continue; 1255 1256 if ((info->vi_width != 0) 1257 && (info->vi_width != bios_vmode[i].vi_width)) 1258 continue; 1259 if ((info->vi_height != 0) 1260 && (info->vi_height != bios_vmode[i].vi_height)) 1261 continue; 1262 if ((info->vi_cwidth != 0) 1263 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1264 continue; 1265 if ((info->vi_cheight != 0) 1266 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1267 continue; 1268 if ((info->vi_depth != 0) 1269 && (info->vi_depth != bios_vmode[i].vi_depth)) 1270 continue; 1271 if ((info->vi_planes != 0) 1272 && (info->vi_planes != bios_vmode[i].vi_planes)) 1273 continue; 1274 /* XXX: should check pixel format, memory model */ 1275 if ((info->vi_flags != 0) 1276 && (info->vi_flags != bios_vmode[i].vi_flags)) 1277 continue; 1278 1279 /* verify if this mode is supported on this adapter */ 1280 if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf)) 1281 continue; 1282 return bios_vmode[i].vi_mode; 1283 } 1284 return -1; 1285} 1286 1287/* 1288 * set_mode(): 1289 * Change the video mode. 1290 * 1291 * EGA/VGA 1292 */ 1293static int 1294vga_set_mode(video_adapter_t *adp, int mode) 1295{ 1296#ifndef VGA_NO_MODE_CHANGE 1297 video_info_t info; 1298 adp_state_t params; 1299 1300 prologue(adp, V_ADP_MODECHANGE, 1); 1301 1302 mode = map_gen_mode_num(adp->va_type, 1303 adp->va_flags & V_ADP_COLOR, mode); 1304 if (vga_get_info(adp, mode, &info)) 1305 return 1; 1306 params.sig = V_STATE_SIG; 1307 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1308 1309 switch (mode) { 1310 case M_VGA_C80x60: case M_VGA_M80x60: 1311 params.regs[2] = 0x08; 1312 params.regs[19] = 0x47; 1313 goto special_480l; 1314 1315 case M_VGA_C80x30: case M_VGA_M80x30: 1316 params.regs[19] = 0x4f; 1317special_480l: 1318 params.regs[9] |= 0xc0; 1319 params.regs[16] = 0x08; 1320 params.regs[17] = 0x3e; 1321 params.regs[26] = 0xea; 1322 params.regs[28] = 0xdf; 1323 params.regs[31] = 0xe7; 1324 params.regs[32] = 0x04; 1325 goto setup_mode; 1326 1327 case M_ENH_C80x43: case M_ENH_B80x43: 1328 params.regs[28] = 87; 1329 goto special_80x50; 1330 1331 case M_VGA_C80x50: case M_VGA_M80x50: 1332special_80x50: 1333 params.regs[2] = 8; 1334 params.regs[19] = 7; 1335 goto setup_mode; 1336 1337 case M_VGA_C40x25: case M_VGA_C80x25: 1338 case M_VGA_M80x25: 1339 case M_B40x25: case M_C40x25: 1340 case M_B80x25: case M_C80x25: 1341 case M_ENH_B40x25: case M_ENH_C40x25: 1342 case M_ENH_B80x25: case M_ENH_C80x25: 1343 case M_EGAMONO80x25: 1344 1345setup_mode: 1346 vga_load_state(adp, ¶ms); 1347 break; 1348 1349 case M_VGA_MODEX: 1350 /* "unchain" the VGA mode */ 1351 params.regs[5-1+0x04] &= 0xf7; 1352 params.regs[5-1+0x04] |= 0x04; 1353 /* turn off doubleword mode */ 1354 params.regs[10+0x14] &= 0xbf; 1355 /* turn off word adressing */ 1356 params.regs[10+0x17] |= 0x40; 1357 /* set logical screen width */ 1358 params.regs[10+0x13] = 80; 1359 /* set 240 lines */ 1360 params.regs[10+0x11] = 0x2c; 1361 params.regs[10+0x06] = 0x0d; 1362 params.regs[10+0x07] = 0x3e; 1363 params.regs[10+0x10] = 0xea; 1364 params.regs[10+0x11] = 0xac; 1365 params.regs[10+0x12] = 0xdf; 1366 params.regs[10+0x15] = 0xe7; 1367 params.regs[10+0x16] = 0x06; 1368 /* set vertical sync polarity to reflect aspect ratio */ 1369 params.regs[9] = 0xe3; 1370 goto setup_grmode; 1371 1372 case M_BG320: case M_CG320: case M_BG640: 1373 case M_CG320_D: case M_CG640_E: 1374 case M_CG640x350: case M_ENH_CG640: 1375 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1376 1377setup_grmode: 1378 vga_load_state(adp, ¶ms); 1379 break; 1380 1381 default: 1382 return 1; 1383 } 1384 1385 adp->va_mode = mode; 1386 update_adapter_info(adp, &info); 1387 1388 /* move hardware cursor out of the way */ 1389 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1390 1391 return 0; 1392#else /* VGA_NO_MODE_CHANGE */ 1393 return 1; 1394#endif /* VGA_NO_MODE_CHANGE */ 1395} 1396 1397#ifndef VGA_NO_FONT_LOADING 1398 1399static void 1400set_font_mode(video_adapter_t *adp, u_char *buf) 1401{ 1402 u_char *mp; 1403 int s; 1404 1405 s = splhigh(); 1406 1407 /* save register values */ 1408 if (adp->va_type == KD_VGA) { 1409 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1410 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1411 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1412 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1413 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1414 inb(adp->va_crtc_addr + 6); 1415 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1416 } else /* if (adp->va_type == KD_EGA) */ { 1417 /* 1418 * EGA cannot be read; copy parameters from the mode parameter 1419 * table. 1420 */ 1421 mp = get_mode_param(adp->va_mode); 1422 buf[0] = mp[5 + 0x02 - 1]; 1423 buf[1] = mp[5 + 0x04 - 1]; 1424 buf[2] = mp[55 + 0x04]; 1425 buf[3] = mp[55 + 0x05]; 1426 buf[4] = mp[55 + 0x06]; 1427 buf[5] = mp[35 + 0x10]; 1428 } 1429 1430 /* setup vga for loading fonts */ 1431 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1432 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1433 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1434 outb(ATC, 0x20); /* enable palette */ 1435 1436#if VGA_SLOW_IOACCESS 1437#ifdef VGA_ALT_SEQACCESS 1438 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1439#endif 1440 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1441 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1442#ifdef VGA_ALT_SEQACCESS 1443 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1444#endif 1445 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1446 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1447 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1448#else /* VGA_SLOW_IOACCESS */ 1449#ifdef VGA_ALT_SEQACCESS 1450 outw(TSIDX, 0x0100); 1451#endif 1452 outw(TSIDX, 0x0402); 1453 outw(TSIDX, 0x0704); 1454#ifdef VGA_ALT_SEQACCESS 1455 outw(TSIDX, 0x0300); 1456#endif 1457 outw(GDCIDX, 0x0204); 1458 outw(GDCIDX, 0x0005); 1459 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1460#endif /* VGA_SLOW_IOACCESS */ 1461 1462 splx(s); 1463} 1464 1465static void 1466set_normal_mode(video_adapter_t *adp, u_char *buf) 1467{ 1468 int s; 1469 1470 s = splhigh(); 1471 1472 /* setup vga for normal operation mode again */ 1473 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1474 outb(ATC, 0x10); outb(ATC, buf[5]); 1475 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1476 outb(ATC, 0x20); /* enable palette */ 1477 1478#if VGA_SLOW_IOACCESS 1479#ifdef VGA_ALT_SEQACCESS 1480 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1481#endif 1482 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1483 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1484#ifdef VGA_ALT_SEQACCESS 1485 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1486#endif 1487 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1488 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1489 if (adp->va_crtc_addr == MONO_CRTC) { 1490 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1491 } else { 1492 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1493 } 1494#else /* VGA_SLOW_IOACCESS */ 1495#ifdef VGA_ALT_SEQACCESS 1496 outw(TSIDX, 0x0100); 1497#endif 1498 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1499 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1500#ifdef VGA_ALT_SEQACCESS 1501 outw(TSIDX, 0x0300); 1502#endif 1503 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1504 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1505 if (adp->va_crtc_addr == MONO_CRTC) 1506 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1507 else 1508 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1509#endif /* VGA_SLOW_IOACCESS */ 1510 1511 splx(s); 1512} 1513 1514#endif /* VGA_NO_FONT_LOADING */ 1515 1516/* 1517 * save_font(): 1518 * Read the font data in the requested font page from the video adapter. 1519 * 1520 * EGA/VGA 1521 */ 1522static int 1523vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1524 int ch, int count) 1525{ 1526#ifndef VGA_NO_FONT_LOADING 1527 u_char buf[PARAM_BUFSIZE]; 1528 u_int32_t segment; 1529 int c; 1530#ifdef VGA_ALT_SEQACCESS 1531 int s; 1532 u_char val = 0; 1533#endif 1534 1535 prologue(adp, V_ADP_FONT, 1); 1536 1537 if (fontsize < 14) { 1538 /* FONT_8 */ 1539 fontsize = 8; 1540 } else if (fontsize >= 32) { 1541 fontsize = 32; 1542 } else if (fontsize >= 16) { 1543 /* FONT_16 */ 1544 fontsize = 16; 1545 } else { 1546 /* FONT_14 */ 1547 fontsize = 14; 1548 } 1549 1550 if (page < 0 || page >= 8) 1551 return 1; 1552 segment = FONT_BUF + 0x4000*page; 1553 if (page > 3) 1554 segment -= 0xe000; 1555 1556#ifdef VGA_ALT_SEQACCESS 1557 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1558 s = splhigh(); 1559 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1560 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1561 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1562 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1563 splx(s); 1564 } 1565#endif 1566 1567 set_font_mode(adp, buf); 1568 if (fontsize == 32) { 1569 bcopy_fromio(segment + ch*32, data, fontsize*count); 1570 } else { 1571 for (c = ch; count > 0; ++c, --count) { 1572 bcopy_fromio(segment + c*32, data, fontsize); 1573 data += fontsize; 1574 } 1575 } 1576 set_normal_mode(adp, buf); 1577 1578#ifdef VGA_ALT_SEQACCESS 1579 if (adp->va_type == KD_VGA) { 1580 s = splhigh(); 1581 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1582 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1583 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1584 splx(s); 1585 } 1586#endif 1587 1588 return 0; 1589#else /* VGA_NO_FONT_LOADING */ 1590 return 1; 1591#endif /* VGA_NO_FONT_LOADING */ 1592} 1593 1594/* 1595 * load_font(): 1596 * Set the font data in the requested font page. 1597 * NOTE: it appears that some recent video adapters do not support 1598 * the font page other than 0... XXX 1599 * 1600 * EGA/VGA 1601 */ 1602static int 1603vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1604 int ch, int count) 1605{ 1606#ifndef VGA_NO_FONT_LOADING 1607 u_char buf[PARAM_BUFSIZE]; 1608 u_int32_t segment; 1609 int c; 1610#ifdef VGA_ALT_SEQACCESS 1611 int s; 1612 u_char val = 0; 1613#endif 1614 1615 prologue(adp, V_ADP_FONT, 1); 1616 1617 if (fontsize < 14) { 1618 /* FONT_8 */ 1619 fontsize = 8; 1620 } else if (fontsize >= 32) { 1621 fontsize = 32; 1622 } else if (fontsize >= 16) { 1623 /* FONT_16 */ 1624 fontsize = 16; 1625 } else { 1626 /* FONT_14 */ 1627 fontsize = 14; 1628 } 1629 1630 if (page < 0 || page >= 8) 1631 return 1; 1632 segment = FONT_BUF + 0x4000*page; 1633 if (page > 3) 1634 segment -= 0xe000; 1635 1636#ifdef VGA_ALT_SEQACCESS 1637 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1638 s = splhigh(); 1639 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1640 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1641 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1642 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1643 splx(s); 1644 } 1645#endif 1646 1647 set_font_mode(adp, buf); 1648 if (fontsize == 32) { 1649 bcopy_toio(data, segment + ch*32, fontsize*count); 1650 } else { 1651 for (c = ch; count > 0; ++c, --count) { 1652 bcopy_toio(data, segment + c*32, fontsize); 1653 data += fontsize; 1654 } 1655 } 1656 set_normal_mode(adp, buf); 1657 1658#ifdef VGA_ALT_SEQACCESS 1659 if (adp->va_type == KD_VGA) { 1660 s = splhigh(); 1661 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1662 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1663 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1664 splx(s); 1665 } 1666#endif 1667 1668 return 0; 1669#else /* VGA_NO_FONT_LOADING */ 1670 return 1; 1671#endif /* VGA_NO_FONT_LOADING */ 1672} 1673 1674/* 1675 * show_font(): 1676 * Activate the requested font page. 1677 * NOTE: it appears that some recent video adapters do not support 1678 * the font page other than 0... XXX 1679 * 1680 * EGA/VGA 1681 */ 1682static int 1683vga_show_font(video_adapter_t *adp, int page) 1684{ 1685#ifndef VGA_NO_FONT_LOADING 1686 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1687 int s; 1688 1689 prologue(adp, V_ADP_FONT, 1); 1690 if (page < 0 || page >= 8) 1691 return 1; 1692 1693 s = splhigh(); 1694 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1695 splx(s); 1696 1697 return 0; 1698#else /* VGA_NO_FONT_LOADING */ 1699 return 1; 1700#endif /* VGA_NO_FONT_LOADING */ 1701} 1702 1703/* 1704 * save_palette(): 1705 * Read DAC values. The values have expressed in 8 bits. 1706 * 1707 * VGA 1708 */ 1709static int 1710vga_save_palette(video_adapter_t *adp, u_char *palette) 1711{ 1712 int i; 1713 1714 prologue(adp, V_ADP_PALETTE, 1); 1715 1716 /* 1717 * We store 8 bit values in the palette buffer, while the standard 1718 * VGA has 6 bit DAC . 1719 */ 1720 outb(PALRADR, 0x00); 1721 for (i = 0; i < 256*3; ++i) 1722 palette[i] = inb(PALDATA) << 2; 1723 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1724 return 0; 1725} 1726 1727/* 1728 * load_palette(): 1729 * Set DAC values. 1730 * 1731 * VGA 1732 */ 1733static int 1734vga_load_palette(video_adapter_t *adp, u_char *palette) 1735{ 1736 int i; 1737 1738 prologue(adp, V_ADP_PALETTE, 1); 1739 1740 outb(PIXMASK, 0xff); /* no pixelmask */ 1741 outb(PALWADR, 0x00); 1742 for (i = 0; i < 256*3; ++i) 1743 outb(PALDATA, palette[i] >> 2); 1744 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1745 outb(ATC, 0x20); /* enable palette */ 1746 return 0; 1747} 1748 1749/* 1750 * set_border(): 1751 * Change the border color. 1752 * 1753 * CGA/EGA/VGA 1754 */ 1755static int 1756vga_set_border(video_adapter_t *adp, int color) 1757{ 1758 prologue(adp, V_ADP_BORDER, 1); 1759 1760 switch (adp->va_type) { 1761 case KD_EGA: 1762 case KD_VGA: 1763 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1764 outb(ATC, 0x31); outb(ATC, color & 0xff); 1765 break; 1766 case KD_CGA: 1767 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 1768 break; 1769 case KD_MONO: 1770 case KD_HERCULES: 1771 default: 1772 break; 1773 } 1774 return 0; 1775} 1776 1777/* 1778 * save_state(): 1779 * Read video register values. 1780 * NOTE: this function only reads the standard EGA/VGA registers. 1781 * any extra/extended registers of SVGA adapters are not saved. 1782 * 1783 * VGA 1784 */ 1785static int 1786vga_save_state(video_adapter_t *adp, void *p, size_t size) 1787{ 1788 video_info_t info; 1789 u_char *buf; 1790 int crtc_addr; 1791 int i, j; 1792 int s; 1793 1794 if (size == 0) { 1795 /* return the required buffer size */ 1796 prologue(adp, V_ADP_STATESAVE, 0); 1797 return sizeof(adp_state_t); 1798 } else { 1799 prologue(adp, V_ADP_STATESAVE, 1); 1800 if (size < sizeof(adp_state_t)) 1801 return 1; 1802 } 1803 1804 ((adp_state_t *)p)->sig = V_STATE_SIG; 1805 buf = ((adp_state_t *)p)->regs; 1806 bzero(buf, V_MODE_PARAM_SIZE); 1807 crtc_addr = adp->va_crtc_addr; 1808 1809 s = splhigh(); 1810 1811 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1812 for (i = 0, j = 5; i < 4; i++) { 1813 outb(TSIDX, i + 1); 1814 buf[j++] = inb(TSREG); 1815 } 1816 buf[9] = inb(MISC + 10); /* dot-clock */ 1817 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1818 1819 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 1820 outb(crtc_addr, i); 1821 buf[j++] = inb(crtc_addr + 1); 1822 } 1823 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 1824 inb(crtc_addr + 6); /* reset flip-flop */ 1825 outb(ATC, i); 1826 buf[j++] = inb(ATC + 1); 1827 } 1828 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 1829 outb(GDCIDX, i); 1830 buf[j++] = inb(GDCREG); 1831 } 1832 inb(crtc_addr + 6); /* reset flip-flop */ 1833 outb(ATC, 0x20); /* enable palette */ 1834 1835 splx(s); 1836 1837#if 1 1838 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 1839 if (info.vi_flags & V_INFO_GRAPHICS) { 1840 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 1841 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 1842 } else { 1843 buf[0] = info.vi_width; /* COLS */ 1844 buf[1] = info.vi_height - 1; /* ROWS */ 1845 } 1846 buf[2] = info.vi_cheight; /* POINTS */ 1847 } else { 1848 /* XXX: shouldn't be happening... */ 1849 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 1850 adp->va_unit, adp->va_name); 1851 } 1852#else 1853 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 1854 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 1855 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 1856 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 1857 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 1858#endif 1859 1860 return 0; 1861} 1862 1863/* 1864 * load_state(): 1865 * Set video registers at once. 1866 * NOTE: this function only updates the standard EGA/VGA registers. 1867 * any extra/extended registers of SVGA adapters are not changed. 1868 * 1869 * EGA/VGA 1870 */ 1871static int 1872vga_load_state(video_adapter_t *adp, void *p) 1873{ 1874 u_char *buf; 1875 int crtc_addr; 1876 int s; 1877 int i; 1878 1879 prologue(adp, V_ADP_STATELOAD, 1); 1880 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1881 return 1; 1882 1883 buf = ((adp_state_t *)p)->regs; 1884 crtc_addr = adp->va_crtc_addr; 1885 1886 s = splhigh(); 1887 1888 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1889 for (i = 0; i < 4; ++i) { /* program sequencer */ 1890 outb(TSIDX, i + 1); 1891 outb(TSREG, buf[i + 5]); 1892 } 1893 outb(MISC, buf[9]); /* set dot-clock */ 1894 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1895 outb(crtc_addr, 0x11); 1896 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 1897 for (i = 0; i < 25; ++i) { /* program crtc */ 1898 outb(crtc_addr, i); 1899 outb(crtc_addr + 1, buf[i + 10]); 1900 } 1901 inb(crtc_addr+6); /* reset flip-flop */ 1902 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 1903 outb(ATC, i); 1904 outb(ATC, buf[i + 35]); 1905 } 1906 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 1907 outb(GDCIDX, i); 1908 outb(GDCREG, buf[i + 55]); 1909 } 1910 inb(crtc_addr + 6); /* reset flip-flop */ 1911 outb(ATC, 0x20); /* enable palette */ 1912 1913#if notyet /* a temporary workaround for kernel panic, XXX */ 1914#ifndef VGA_NO_BIOS 1915 if (adp->va_unit == V_ADP_PRIMARY) { 1916 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 1917 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 1918 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 1919#if 0 1920 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 1921 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 1922#endif 1923 } 1924#endif /* VGA_NO_BIOS */ 1925#endif /* notyet */ 1926 1927 splx(s); 1928 return 0; 1929} 1930 1931/* 1932 * set_origin(): 1933 * Change the origin (window mapping) of the banked frame buffer. 1934 */ 1935static int 1936vga_set_origin(video_adapter_t *adp, off_t offset) 1937{ 1938 /* 1939 * The standard video modes do not require window mapping; 1940 * always return error. 1941 */ 1942 return 1; 1943} 1944 1945/* 1946 * read_hw_cursor(): 1947 * Read the position of the hardware text cursor. 1948 * 1949 * all adapters 1950 */ 1951static int 1952vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1953{ 1954 u_int16_t off; 1955 int s; 1956 1957 if (!init_done) 1958 return 1; 1959 1960 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 1961 return 1; 1962 1963 s = spltty(); 1964 outb(adp->va_crtc_addr, 14); 1965 off = inb(adp->va_crtc_addr + 1); 1966 outb(adp->va_crtc_addr, 15); 1967 off = (off << 8) | inb(adp->va_crtc_addr + 1); 1968 splx(s); 1969 1970 *row = off / adp->va_info.vi_width; 1971 *col = off % adp->va_info.vi_width; 1972 1973 return 0; 1974} 1975 1976/* 1977 * set_hw_cursor(): 1978 * Move the hardware text cursor. If col and row are both -1, 1979 * the cursor won't be shown. 1980 * 1981 * all adapters 1982 */ 1983static int 1984vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 1985{ 1986 u_int16_t off; 1987 int s; 1988 1989 if (!init_done) 1990 return 1; 1991 1992 if ((col == -1) && (row == -1)) { 1993 off = -1; 1994 } else { 1995 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 1996 return 1; 1997 off = row*adp->va_info.vi_width + col; 1998 } 1999 2000 s = spltty(); 2001 outb(adp->va_crtc_addr, 14); 2002 outb(adp->va_crtc_addr + 1, off >> 8); 2003 outb(adp->va_crtc_addr, 15); 2004 outb(adp->va_crtc_addr + 1, off & 0x00ff); 2005 splx(s); 2006 2007 return 0; 2008} 2009 2010/* 2011 * set_hw_cursor_shape(): 2012 * Change the shape of the hardware text cursor. If the height is 2013 * zero or negative, the cursor won't be shown. 2014 * 2015 * all adapters 2016 */ 2017static int 2018vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 2019 int celsize, int blink) 2020{ 2021 int s; 2022 2023 if (!init_done) 2024 return 1; 2025 2026 s = spltty(); 2027 switch (adp->va_type) { 2028 case KD_VGA: 2029 case KD_CGA: 2030 case KD_MONO: 2031 case KD_HERCULES: 2032 default: 2033 if (height <= 0) { 2034 /* make the cursor invisible */ 2035 outb(adp->va_crtc_addr, 10); 2036 outb(adp->va_crtc_addr + 1, 32); 2037 outb(adp->va_crtc_addr, 11); 2038 outb(adp->va_crtc_addr + 1, 0); 2039 } else { 2040 outb(adp->va_crtc_addr, 10); 2041 outb(adp->va_crtc_addr + 1, celsize - base - height); 2042 outb(adp->va_crtc_addr, 11); 2043 outb(adp->va_crtc_addr + 1, celsize - base - 1); 2044 } 2045 break; 2046 case KD_EGA: 2047 if (height <= 0) { 2048 /* make the cursor invisible */ 2049 outb(adp->va_crtc_addr, 10); 2050 outb(adp->va_crtc_addr + 1, celsize); 2051 outb(adp->va_crtc_addr, 11); 2052 outb(adp->va_crtc_addr + 1, 0); 2053 } else { 2054 outb(adp->va_crtc_addr, 10); 2055 outb(adp->va_crtc_addr + 1, celsize - base - height); 2056 outb(adp->va_crtc_addr, 11); 2057 outb(adp->va_crtc_addr + 1, celsize - base); 2058 } 2059 break; 2060 } 2061 splx(s); 2062 2063 return 0; 2064} 2065 2066/* 2067 * mmap(): 2068 * Mmap frame buffer. 2069 * 2070 * all adapters 2071 */ 2072static int 2073vga_mmap(video_adapter_t *adp, vm_offset_t offset) 2074{ 2075 if (offset > 0x20000 - PAGE_SIZE) 2076 return -1; 2077#ifdef __i386__ 2078 return i386_btop((VIDEO_BUF_BASE + offset)); 2079#endif 2080#ifdef __alpha__ 2081 return alpha_btop((VIDEO_BUF_BASE + offset)); 2082#endif 2083} 2084 2085static void 2086dump_buffer(u_char *buf, size_t len) 2087{ 2088 int i; 2089 2090 for(i = 0; i < len;) { 2091 printf("%02x ", buf[i]); 2092 if ((++i % 16) == 0) 2093 printf("\n"); 2094 } 2095} 2096 2097/* 2098 * diag(): 2099 * Print some information about the video adapter and video modes, 2100 * with requested level of details. 2101 * 2102 * all adapters 2103 */ 2104static int 2105vga_diag(video_adapter_t *adp, int level) 2106{ 2107#if FB_DEBUG > 1 2108 video_info_t info; 2109#endif 2110 u_char *mp; 2111 2112 if (!init_done) 2113 return 1; 2114 2115#if FB_DEBUG > 1 2116#ifndef VGA_NO_BIOS 2117 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", 2118 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); 2119 printf("vga: CRTC:0x%x, video option:0x%02x, ", 2120 readw(BIOS_PADDRTOVADDR(0x463)), 2121 readb(BIOS_PADDRTOVADDR(0x487))); 2122 printf("rows:%d, cols:%d, font height:%d\n", 2123 readb(BIOS_PADDRTOVADDR(0x44a)), 2124 readb(BIOS_PADDRTOVADDR(0x484)) + 1, 2125 readb(BIOS_PADDRTOVADDR(0x485))); 2126#endif /* VGA_NO_BIOS */ 2127#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2128 printf("vga: param table EGA/VGA:%p", video_mode_ptr); 2129 printf(", CGA/MDA:%p\n", video_mode_ptr2); 2130#endif 2131 printf("vga: rows_offset:%d\n", rows_offset); 2132#endif /* FB_DEBUG > 1 */ 2133 2134 fb_dump_adp_info(DRIVER_NAME, adp, level); 2135 2136#if FB_DEBUG > 1 2137 if (adp->va_flags & V_ADP_MODECHANGE) { 2138 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 2139 if (bios_vmode[i].vi_mode == NA) 2140 continue; 2141 if (get_mode_param(bios_vmode[i].vi_mode) == NULL) 2142 continue; 2143 fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level); 2144 } 2145 } else { 2146 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ 2147 fb_dump_mode_info(DRIVER_NAME, adp, &info, level); 2148 } 2149#endif /* FB_DEBUG > 1 */ 2150 2151 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) 2152 return 0; 2153#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2154 if (video_mode_ptr == NULL) 2155 printf("vga%d: %s: WARNING: video mode switching is not " 2156 "fully supported on this adapter\n", 2157 adp->va_unit, adp->va_name); 2158#endif 2159 if (level <= 0) 2160 return 0; 2161 2162 if (adp->va_type == KD_VGA) { 2163 printf("VGA parameters upon power-up\n"); 2164 dump_buffer(adpstate.regs, sizeof(adpstate.regs)); 2165 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); 2166 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); 2167 } 2168 2169 mp = get_mode_param(adp->va_initial_mode); 2170 if (mp == NULL) /* this shouldn't be happening */ 2171 return 0; 2172 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); 2173 dump_buffer(mp, V_MODE_PARAM_SIZE); 2174 2175 return 0; 2176} 2177 2178#endif /* NVGA > 0 */ 2179