vga_isa.c revision 46805
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 1.7 1999/05/08 21:59:32 dfr 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 device_set_desc(dev, "Generic ISA VGA"); 118 sc = device_get_softc(dev); 119 return isavga_probe_unit(device_get_unit(dev), sc, isa_get_flags(dev)); 120} 121 122static int 123isavga_attach(device_t dev) 124{ 125 isavga_softc_t *sc; 126 127 sc = device_get_softc(dev); 128 return isavga_attach_unit(device_get_unit(dev), sc, isa_get_flags(dev)); 129} 130 131static int 132isavga_probe_unit(int unit, isavga_softc_t *sc, int flags) 133{ 134 video_switch_t *sw; 135 136 bzero(sc, sizeof(*sc)); 137 sw = vid_get_switch(DRIVER_NAME); 138 if (sw == NULL) 139 return 0; 140 return (*sw->probe)(unit, &sc->adp, NULL, flags); 141} 142 143static int 144isavga_attach_unit(int unit, isavga_softc_t *sc, int flags) 145{ 146 video_switch_t *sw; 147 int error; 148 149 sw = vid_get_switch(DRIVER_NAME); 150 if (sw == NULL) 151 return ENXIO; 152 153 error = (*sw->init)(unit, sc->adp, flags); 154 if (error) 155 return ENXIO; 156 157#ifdef FB_INSTALL_CDEV 158 /* attach a virtual frame buffer device */ 159 error = fb_attach(makedev(0, ISAVGA_MKMINOR(unit)), scp->adp, 160 &vga_cdevsw); 161 if (error) 162 return error; 163#endif /* FB_INSTALL_CDEV */ 164 165 if (bootverbose) 166 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); 167 168 return 0; 169} 170 171/* LOW-LEVEL */ 172 173#include <machine/clock.h> 174#include <machine/pc/vesa.h> 175 176#define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED) 177#define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED) 178#define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED) 179 180/* for compatibility with old kernel options */ 181#ifdef SC_ALT_SEQACCESS 182#undef SC_ALT_SEQACCESS 183#undef VGA_ALT_SEQACCESS 184#define VGA_ALT_SEQACCESS 1 185#endif 186 187#ifdef SLOW_VGA 188#undef SLOW_VGA 189#undef VGA_SLOW_IOACCESS 190#define VGA_SLOW_IOACCESS 1 191#endif 192 193/* architecture dependent option */ 194#ifdef __alpha__ 195#define VGA_NO_BIOS 1 196#endif 197 198/* this should really be in `rtc.h' */ 199#define RTC_EQUIPMENT 0x14 200 201/* various sizes */ 202#define V_MODE_MAP_SIZE (M_VGA_CG320 + 1) 203#define V_MODE_PARAM_SIZE 64 204 205/* video adapter state buffer */ 206struct adp_state { 207 int sig; 208#define V_STATE_SIG 0x736f6962 209 u_char regs[V_MODE_PARAM_SIZE]; 210}; 211typedef struct adp_state adp_state_t; 212 213/* video adapter information */ 214#define DCC_MONO 0 215#define DCC_CGA40 1 216#define DCC_CGA80 2 217#define DCC_EGAMONO 3 218#define DCC_EGA40 4 219#define DCC_EGA80 5 220 221/* 222 * NOTE: `va_window' should have a virtual address, but is initialized 223 * with a physical address in the following table, as verify_adapter() 224 * will perform address conversion at run-time. 225 */ 226static video_adapter_t adapter_init_value[] = { 227 /* DCC_MONO */ 228 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC, 229 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 230 0, 0, 0, 7, 0, }, 231 /* DCC_CGA40 */ 232 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 233 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 234 0, 0, 0, 3, 0, }, 235 /* DCC_CGA80 */ 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_EGAMONO */ 240 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC, 241 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 242 0, 0, 0, 7, 0, }, 243 /* DCC_EGA40 */ 244 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 245 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 246 0, 0, 0, 3, 0, }, 247 /* DCC_EGA80 */ 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}; 252 253static video_adapter_t biosadapter[2]; 254static int biosadapters = 0; 255 256/* video driver declarations */ 257static int vga_configure(int flags); 258 int (*vga_sub_configure)(int flags); 259static int vga_nop(void); 260static vi_probe_t vga_probe; 261static vi_init_t vga_init; 262static vi_get_info_t vga_get_info; 263static vi_query_mode_t vga_query_mode; 264static vi_set_mode_t vga_set_mode; 265static vi_save_font_t vga_save_font; 266static vi_load_font_t vga_load_font; 267static vi_show_font_t vga_show_font; 268static vi_save_palette_t vga_save_palette; 269static vi_load_palette_t vga_load_palette; 270static vi_set_border_t vga_set_border; 271static vi_save_state_t vga_save_state; 272static vi_load_state_t vga_load_state; 273static vi_set_win_org_t vga_set_origin; 274static vi_read_hw_cursor_t vga_read_hw_cursor; 275static vi_set_hw_cursor_t vga_set_hw_cursor; 276static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape; 277static vi_mmap_t vga_mmap; 278static vi_diag_t vga_diag; 279 280static video_switch_t vgavidsw = { 281 vga_probe, 282 vga_init, 283 vga_get_info, 284 vga_query_mode, 285 vga_set_mode, 286 vga_save_font, 287 vga_load_font, 288 vga_show_font, 289 vga_save_palette, 290 vga_load_palette, 291 vga_set_border, 292 vga_save_state, 293 vga_load_state, 294 vga_set_origin, 295 vga_read_hw_cursor, 296 vga_set_hw_cursor, 297 vga_set_hw_cursor_shape, 298 (vi_blank_display_t *)vga_nop, 299 vga_mmap, 300 vga_diag, 301}; 302 303VIDEO_DRIVER(mda, vgavidsw, NULL); 304VIDEO_DRIVER(cga, vgavidsw, NULL); 305VIDEO_DRIVER(ega, vgavidsw, NULL); 306VIDEO_DRIVER(vga, vgavidsw, vga_configure); 307 308/* VGA BIOS standard video modes */ 309#define EOT (-1) 310#define NA (-2) 311 312static video_info_t bios_vmode[] = { 313 /* CGA */ 314 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1, 315 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 316 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, 317 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 318 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, 319 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 320 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, 321 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 322 /* EGA */ 323 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, 324 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 325 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, 326 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 327 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, 328 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 329 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, 330 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 331 /* VGA */ 332 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, 333 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 334 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, 335 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 336 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, 337 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 338 /* MDA */ 339 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, 340 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 341 /* EGA */ 342 { M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1, 343 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 344 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, 345 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 346 /* VGA */ 347 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, 348 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 349 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, 350 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 351 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, 352 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 353 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, 354 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 355 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, 356 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 357 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, 358 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 359#ifndef VGA_NO_MODE_CHANGE 360 /* CGA */ 361 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 362 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 363 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 364 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 365 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1, 366 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 367 /* EGA */ 368 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4, 369 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 370 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4, 371 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 372 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 373 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 }, 374 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 375 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 376 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2, 377 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 378 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 379 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 380 /* VGA */ 381 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 382 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 383 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 384 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 385 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1, 386 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 387 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 1, 388 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 389#endif /* VGA_NO_MODE_CHANGE */ 390 391 { EOT }, 392}; 393 394static int init_done = FALSE; 395#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 396static u_char *video_mode_ptr = NULL; /* EGA/VGA */ 397static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */ 398#endif 399static u_char *mode_map[V_MODE_MAP_SIZE]; 400static adp_state_t adpstate; 401static adp_state_t adpstate2; 402static int rows_offset = 1; 403 404/* local macros and functions */ 405#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 406 407#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 408static void map_mode_table(u_char *map[], u_char *table, int max); 409#endif 410static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max, 411 int color); 412#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 413static int map_mode_num(int mode); 414#endif 415static int map_gen_mode_num(int type, int color, int mode); 416static int map_bios_mode_num(int type, int color, int bios_mode); 417static u_char *get_mode_param(int mode); 418#ifndef VGA_NO_BIOS 419static void fill_adapter_param(int code, video_adapter_t *adp); 420#endif 421static int verify_adapter(video_adapter_t *adp); 422static void update_adapter_info(video_adapter_t *adp, video_info_t *info); 423#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 424#define COMP_IDENTICAL 0 425#define COMP_SIMILAR 1 426#define COMP_DIFFERENT 2 427static int comp_adpregs(u_char *buf1, u_char *buf2); 428#endif 429static int probe_adapters(void); 430 431#ifndef VGA_NO_FONT_LOADING 432#define PARAM_BUFSIZE 6 433static void set_font_mode(video_adapter_t *adp, u_char *buf); 434static void set_normal_mode(video_adapter_t *adp, u_char *buf); 435#endif 436 437static void dump_buffer(u_char *buf, size_t len); 438 439#define ISMAPPED(pa, width) \ 440 (((pa) <= (u_long)0x1000 - (width)) \ 441 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width))) 442 443#define prologue(adp, flag, err) \ 444 if (!init_done || !((adp)->va_flags & (flag))) \ 445 return (err) 446 447/* a backdoor for the console driver */ 448static int 449vga_configure(int flags) 450{ 451 int i; 452 453 probe_adapters(); 454 for (i = 0; i < biosadapters; ++i) { 455 if (!probe_done(&biosadapter[i])) 456 continue; 457 biosadapter[i].va_flags |= V_ADP_INITIALIZED; 458 if (!config_done(&biosadapter[i])) { 459 if (vid_register(&biosadapter[i]) < 0) 460 continue; 461 biosadapter[i].va_flags |= V_ADP_REGISTERED; 462 } 463 } 464 if (vga_sub_configure != NULL) 465 (*vga_sub_configure)(flags); 466 467 return biosadapters; 468} 469 470/* local subroutines */ 471 472#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 473/* construct the mode parameter map */ 474static void 475map_mode_table(u_char *map[], u_char *table, int max) 476{ 477 int i; 478 479 for(i = 0; i < max; ++i) 480 map[i] = table + i*V_MODE_PARAM_SIZE; 481 for(; i < V_MODE_MAP_SIZE; ++i) 482 map[i] = NULL; 483} 484#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 485 486static void 487clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color) 488{ 489 video_info_t info; 490 int i; 491 492 /* 493 * NOTE: we don't touch `bios_vmode[]' because it is shared 494 * by all adapters. 495 */ 496 for(i = 0; i < max; ++i) { 497 if (vga_get_info(adp, i, &info)) 498 continue; 499 if ((info.vi_flags & V_INFO_COLOR) != color) 500 map[i] = NULL; 501 } 502} 503 504#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 505/* map the non-standard video mode to a known mode number */ 506static int 507map_mode_num(int mode) 508{ 509 static struct { 510 int from; 511 int to; 512 } mode_map[] = { 513 { M_ENH_B80x43, M_ENH_B80x25 }, 514 { M_ENH_C80x43, M_ENH_C80x25 }, 515 { M_VGA_M80x30, M_VGA_M80x25 }, 516 { M_VGA_C80x30, M_VGA_C80x25 }, 517 { M_VGA_M80x50, M_VGA_M80x25 }, 518 { M_VGA_C80x50, M_VGA_C80x25 }, 519 { M_VGA_M80x60, M_VGA_M80x25 }, 520 { M_VGA_C80x60, M_VGA_C80x25 }, 521 { M_VGA_MODEX, M_VGA_CG320 }, 522 }; 523 int i; 524 525 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 526 if (mode_map[i].from == mode) 527 return mode_map[i].to; 528 } 529 return mode; 530} 531#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 532 533/* map a generic video mode to a known mode number */ 534static int 535map_gen_mode_num(int type, int color, int mode) 536{ 537 static struct { 538 int from; 539 int to_color; 540 int to_mono; 541 } mode_map[] = { 542 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, }, 543 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, }, 544 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, }, 545 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, }, 546 }; 547 int i; 548 549 if (mode == M_TEXT_80x25) { 550 switch (type) { 551 552 case KD_VGA: 553 if (color) 554 return M_VGA_C80x25; 555 else 556 return M_VGA_M80x25; 557 break; 558 559 case KD_EGA: 560 if (color) 561 return M_ENH_C80x25; 562 else 563 return M_EGAMONO80x25; 564 break; 565 566 case KD_CGA: 567 return M_C80x25; 568 569 case KD_MONO: 570 case KD_HERCULES: 571 return M_EGAMONO80x25; /* XXX: this name is confusing */ 572 573 default: 574 return -1; 575 } 576 } 577 578 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 579 if (mode_map[i].from == mode) 580 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono); 581 } 582 return mode; 583} 584 585/* turn the BIOS video number into our video mode number */ 586static int 587map_bios_mode_num(int type, int color, int bios_mode) 588{ 589 static int cga_modes[7] = { 590 M_B40x25, M_C40x25, /* 0, 1 */ 591 M_B80x25, M_C80x25, /* 2, 3 */ 592 M_BG320, M_CG320, 593 M_BG640, 594 }; 595 static int ega_modes[17] = { 596 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */ 597 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */ 598 M_BG320, M_CG320, 599 M_BG640, 600 M_EGAMONO80x25, /* 7 */ 601 8, 9, 10, 11, 12, 602 M_CG320_D, 603 M_CG640_E, 604 M_ENHMONOAPA2, /* XXX: video momery > 64K */ 605 M_ENH_CG640, /* XXX: video momery > 64K */ 606 }; 607 static int vga_modes[20] = { 608 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */ 609 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */ 610 M_BG320, M_CG320, 611 M_BG640, 612 M_VGA_M80x25, /* 7 */ 613 8, 9, 10, 11, 12, 614 M_CG320_D, 615 M_CG640_E, 616 M_ENHMONOAPA2, 617 M_ENH_CG640, 618 M_BG640x480, M_CG640x480, 619 M_VGA_CG320, 620 }; 621 622 switch (type) { 623 624 case KD_VGA: 625 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0])) 626 return vga_modes[bios_mode]; 627 else if (color) 628 return M_VGA_C80x25; 629 else 630 return M_VGA_M80x25; 631 break; 632 633 case KD_EGA: 634 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0])) 635 return ega_modes[bios_mode]; 636 else if (color) 637 return M_ENH_C80x25; 638 else 639 return M_EGAMONO80x25; 640 break; 641 642 case KD_CGA: 643 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0])) 644 return cga_modes[bios_mode]; 645 else 646 return M_C80x25; 647 break; 648 649 case KD_MONO: 650 case KD_HERCULES: 651 return M_EGAMONO80x25; /* XXX: this name is confusing */ 652 653 default: 654 break; 655 } 656 return -1; 657} 658 659/* look up a parameter table entry */ 660static u_char 661*get_mode_param(int mode) 662{ 663#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 664 if (mode >= V_MODE_MAP_SIZE) 665 mode = map_mode_num(mode); 666#endif 667 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE)) 668 return mode_map[mode]; 669 else 670 return NULL; 671} 672 673#ifndef VGA_NO_BIOS 674static void 675fill_adapter_param(int code, video_adapter_t *adp) 676{ 677 static struct { 678 int primary; 679 int secondary; 680 } dcc[] = { 681 { DCC_MONO, DCC_EGA40 /* CGA monitor */ }, 682 { DCC_MONO, DCC_EGA80 /* CGA monitor */ }, 683 { DCC_MONO, DCC_EGA80 /* CGA emulation */ }, 684 { DCC_MONO, DCC_EGA80 }, 685 { DCC_CGA40, DCC_EGAMONO }, 686 { DCC_CGA80, DCC_EGAMONO }, 687 { DCC_EGA40 /* CGA monitor */, DCC_MONO}, 688 { DCC_EGA80 /* CGA monitor */, DCC_MONO}, 689 { DCC_EGA80 /* CGA emulation */,DCC_MONO }, 690 { DCC_EGA80, DCC_MONO }, 691 { DCC_EGAMONO, DCC_CGA40 }, 692 { DCC_EGAMONO, DCC_CGA40 }, 693 }; 694 695 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) { 696 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 697 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 698 } else { 699 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary]; 700 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary]; 701 } 702} 703#endif /* VGA_NO_BIOS */ 704 705static int 706verify_adapter(video_adapter_t *adp) 707{ 708 vm_offset_t buf; 709 u_int16_t v; 710#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 711 u_int32_t p; 712#endif 713 714 buf = BIOS_PADDRTOVADDR(adp->va_window); 715 v = readw(buf); 716 writew(buf, 0xA55A); 717 if (readw(buf) != 0xA55A) 718 return 1; 719 writew(buf, v); 720 721 switch (adp->va_type) { 722 723 case KD_EGA: 724 outb(adp->va_crtc_addr, 7); 725 if (inb(adp->va_crtc_addr) == 7) { 726 adp->va_type = KD_VGA; 727 adp->va_name = "vga"; 728 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; 729 } 730 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER; 731 /* the color adapter may be in the 40x25 mode... XXX */ 732 733#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 734 /* get the BIOS video mode pointer */ 735 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8); 736 p = BIOS_SADDRTOLADDR(p); 737 if (ISMAPPED(p, sizeof(u_int32_t))) { 738 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p); 739 p = BIOS_SADDRTOLADDR(p); 740 if (ISMAPPED(p, V_MODE_PARAM_SIZE)) 741 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p); 742 } 743#endif 744 break; 745 746 case KD_CGA: 747 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; 748 /* may be in the 40x25 mode... XXX */ 749#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 750 /* get the BIOS video mode pointer */ 751 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 752 p = BIOS_SADDRTOLADDR(p); 753 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 754#endif 755 break; 756 757 case KD_MONO: 758#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 759 /* get the BIOS video mode pointer */ 760 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 761 p = BIOS_SADDRTOLADDR(p); 762 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 763#endif 764 break; 765 } 766 767 return 0; 768} 769 770static void 771update_adapter_info(video_adapter_t *adp, video_info_t *info) 772{ 773 adp->va_flags &= ~V_ADP_COLOR; 774 adp->va_flags |= 775 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 776 adp->va_crtc_addr = 777 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 778 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window); 779 adp->va_window_size = info->vi_window_size; 780 adp->va_window_gran = info->vi_window_gran; 781 if (info->vi_buffer_size == 0) { 782 adp->va_buffer = 0; 783 adp->va_buffer_size = 0; 784 } else { 785 adp->va_buffer = BIOS_PADDRTOVADDR(info->vi_buffer); 786 adp->va_buffer_size = info->vi_buffer_size; 787 } 788 if (info->vi_flags & V_INFO_GRAPHICS) { 789 switch (info->vi_depth/info->vi_planes) { 790 case 1: 791 adp->va_line_width = info->vi_width/8; 792 break; 793 case 2: 794 adp->va_line_width = info->vi_width/4; 795 break; 796 case 4: 797 adp->va_line_width = info->vi_width/2; 798 break; 799 case 8: 800 default: /* shouldn't happen */ 801 adp->va_line_width = info->vi_width; 802 break; 803 } 804 } else { 805 adp->va_line_width = info->vi_width; 806 } 807 bcopy(info, &adp->va_info, sizeof(adp->va_info)); 808} 809 810#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 811/* compare two parameter table entries */ 812static int 813comp_adpregs(u_char *buf1, u_char *buf2) 814{ 815 static struct { 816 u_char mask; 817 } params[V_MODE_PARAM_SIZE] = { 818 {0xff}, {0x00}, {0xff}, /* COLS, ROWS, POINTS */ 819 {0x00}, {0x00}, /* page length */ 820 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */ 821 {0xf3}, /* misc register */ 822 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */ 823 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, 824 {0x00}, {0x00}, {0x00}, {0x00}, {0x00}, 825 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff}, 826 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff}, 827 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */ 828 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, 829 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, 830 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0}, 831 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */ 832 {0xff}, {0xff}, {0xff}, {0xff}, 833 }; 834 int identical = TRUE; 835 int i; 836 837 if ((buf1 == NULL) || (buf2 == NULL)) 838 return COMP_DIFFERENT; 839 840 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 841 if (params[i].mask == 0) /* don't care */ 842 continue; 843 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 844 return COMP_DIFFERENT; 845 if (buf1[i] != buf2[i]) 846 identical = FALSE; 847 } 848 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 849} 850#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 851 852/* probe video adapters and return the number of detected adapters */ 853static int 854probe_adapters(void) 855{ 856 video_adapter_t *adp; 857 video_info_t info; 858 int i; 859 860 /* do this test only once */ 861 if (init_done) 862 return biosadapters; 863 init_done = TRUE; 864 865 /* 866 * Locate display adapters. 867 * The AT architecture supports upto two adapters. `syscons' allows 868 * the following combinations of adapters: 869 * 1) MDA + CGA 870 * 2) MDA + EGA/VGA color 871 * 3) CGA + EGA/VGA mono 872 * Note that `syscons' doesn't bother with MCGA as it is only 873 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 874 * thus, they are not running FreeBSD! 875 * When there are two adapaters in the system, one becomes `primary' 876 * and the other `secondary'. The EGA adapter has a set of DIP 877 * switches on board for this information and the EGA BIOS copies 878 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 879 * The VGA BIOS has more sophisticated mechanism and has this 880 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 881 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 882 */ 883 884 /* 885 * Check rtc and BIOS data area. 886 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 887 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 888 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 889 * these bits in BIOSDATA_EQUIPMENT according to the monitor 890 * type detected. 891 */ 892#ifndef VGA_NO_BIOS 893 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 894 case 0: 895 /* EGA/VGA */ 896 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 897 biosadapter); 898 break; 899 case 1: 900 /* CGA 40x25 */ 901 /* FIXME: switch to the 80x25 mode? XXX */ 902 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 903 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 904 break; 905 case 2: 906 /* CGA 80x25 */ 907 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 908 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 909 break; 910 case 3: 911 /* MDA */ 912 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 913 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 914 break; 915 } 916#else 917 /* assume EGA/VGA? XXX */ 918 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 919 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 920#endif /* VGA_NO_BIOS */ 921 922 biosadapters = 0; 923 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 924 ++biosadapters; 925 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 926 biosadapter[V_ADP_SECONDARY].va_mode = 927 biosadapter[V_ADP_SECONDARY].va_initial_mode = 928 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 929 biosadapter[V_ADP_SECONDARY].va_flags 930 & V_ADP_COLOR, 931 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 932 } else { 933 biosadapter[V_ADP_SECONDARY].va_type = -1; 934 } 935 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 936 ++biosadapters; 937 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 938#ifndef VGA_NO_BIOS 939 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 940 readb(BIOS_PADDRTOVADDR(0x449)); 941#else 942 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 943#endif 944 biosadapter[V_ADP_PRIMARY].va_mode = 945 biosadapter[V_ADP_PRIMARY].va_initial_mode = 946 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 947 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 948 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 949 } else { 950 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 951 biosadapter[V_ADP_SECONDARY].va_type = -1; 952 } 953 if (biosadapters == 0) 954 return biosadapters; 955 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 956 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 957 958#if 0 /* we don't need these... */ 959 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 960 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 961#endif 962 963#if 0 964 /* 965 * We cannot have two video adapter of the same type; there must be 966 * only one of color or mono adapter, or one each of them. 967 */ 968 if (biosadapters > 1) { 969 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 970 & V_ADP_COLOR)) 971 /* we have two mono or color adapters!! */ 972 return (biosadapters = 0); 973 } 974#endif 975 976 /* 977 * Ensure a zero start address. This is mainly to recover after 978 * switching from pcvt using userconfig(). The registers are w/o 979 * for old hardware so it's too hard to relocate the active screen 980 * memory. 981 * This must be done before vga_save_state() for VGA. 982 */ 983 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 984 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 985 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 986 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 987 988 /* the video mode parameter table in EGA/VGA BIOS */ 989 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 990 * recognized by the video BIOS. 991 */ 992 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 993 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 994 adp = &biosadapter[V_ADP_PRIMARY]; 995 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 996 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 997 adp = &biosadapter[V_ADP_SECONDARY]; 998 } else { 999 adp = NULL; 1000 } 1001 bzero(mode_map, sizeof(mode_map)); 1002 if (adp != NULL) { 1003 if (adp->va_type == KD_VGA) { 1004 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1005#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1006 mode_map[adp->va_initial_mode] = adpstate.regs; 1007 rows_offset = 1; 1008#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1009 if (video_mode_ptr == NULL) { 1010 mode_map[adp->va_initial_mode] = adpstate.regs; 1011 rows_offset = 1; 1012 } else { 1013 /* discard the table if we are not familiar with it... */ 1014 u_char *mp; 1015 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1016 mp = get_mode_param(adp->va_initial_mode); 1017 if (mp != NULL) 1018 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1019 switch (comp_adpregs(adpstate.regs, mp)) { 1020 case COMP_IDENTICAL: 1021 /* 1022 * OK, this parameter table looks reasonably familiar 1023 * to us... 1024 */ 1025 /* 1026 * This is a kludge for Toshiba DynaBook SS433 1027 * whose BIOS video mode table entry has the actual # 1028 * of rows at the offset 1; BIOSes from other 1029 * manufacturers store the # of rows - 1 there. XXX 1030 */ 1031 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1032 break; 1033 1034 case COMP_SIMILAR: 1035 /* 1036 * Not exactly the same, but similar enough to be 1037 * trusted. However, use the saved register values 1038 * for the initial mode and other modes which are 1039 * based on the initial mode. 1040 */ 1041 mode_map[adp->va_initial_mode] = adpstate.regs; 1042 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1043 adpstate.regs[1] -= rows_offset - 1; 1044 break; 1045 1046 case COMP_DIFFERENT: 1047 default: 1048 /* 1049 * Don't use the paramter table in BIOS. It doesn't 1050 * look familiar to us. Video mode switching is allowed 1051 * only if the new mode is the same as or based on 1052 * the initial mode. 1053 */ 1054 video_mode_ptr = NULL; 1055 bzero(mode_map, sizeof(mode_map)); 1056 mode_map[adp->va_initial_mode] = adpstate.regs; 1057 rows_offset = 1; 1058 break; 1059 } 1060 } 1061#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1062 1063#ifndef VGA_NO_MODE_CHANGE 1064 adp->va_flags |= V_ADP_MODECHANGE; 1065#endif 1066#ifndef VGA_NO_FONT_LOADING 1067 adp->va_flags |= V_ADP_FONT; 1068#endif 1069 } else if (adp->va_type == KD_EGA) { 1070#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1071 rows_offset = 1; 1072#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1073 if (video_mode_ptr == NULL) { 1074 rows_offset = 1; 1075 } else { 1076 u_char *mp; 1077 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1078 /* XXX how can one validate the EGA table... */ 1079 mp = get_mode_param(adp->va_initial_mode); 1080 if (mp != NULL) { 1081 adp->va_flags |= V_ADP_MODECHANGE; 1082#ifndef VGA_NO_FONT_LOADING 1083 adp->va_flags |= V_ADP_FONT; 1084#endif 1085 rows_offset = 1; 1086 } else { 1087 /* 1088 * This is serious. We will not be able to switch video 1089 * modes at all... 1090 */ 1091 video_mode_ptr = NULL; 1092 bzero(mode_map, sizeof(mode_map)); 1093 rows_offset = 1; 1094 } 1095 } 1096#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1097 } 1098 } 1099 1100 /* remove conflicting modes if we have more than one adapter */ 1101 if (biosadapters > 1) { 1102 for (i = 0; i < biosadapters; ++i) { 1103 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1104 continue; 1105 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1106 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1107 V_INFO_COLOR : 0); 1108 if ((biosadapter[i].va_type == KD_VGA) 1109 || (biosadapter[i].va_type == KD_EGA)) { 1110 biosadapter[i].va_io_base = 1111 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1112 IO_VGA : IO_MDA; 1113 biosadapter[i].va_io_size = 32; 1114 } 1115 } 1116 } 1117 1118 /* buffer address */ 1119 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1120 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1121 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); 1122 1123 if (biosadapters > 1) { 1124 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1125 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1126 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); 1127 } 1128 1129 /* 1130 * XXX: we should verify the following values for the primary adapter... 1131 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1132 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1133 * ? 0 : V_ADP_COLOR; 1134 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1135 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1136 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1137 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1138 */ 1139 1140 return biosadapters; 1141} 1142 1143/* entry points */ 1144 1145static int 1146vga_nop(void) 1147{ 1148 return 0; 1149} 1150 1151static int 1152vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1153{ 1154 probe_adapters(); 1155 if (unit >= biosadapters) 1156 return ENXIO; 1157 1158 *adpp = &biosadapter[unit]; 1159 1160 return 0; 1161} 1162 1163static int 1164vga_init(int unit, video_adapter_t *adp, int flags) 1165{ 1166 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1167 return ENXIO; 1168 1169 if (!init_done(adp)) { 1170 /* nothing to do really... */ 1171 adp->va_flags |= V_ADP_INITIALIZED; 1172 } 1173 1174 if (!config_done(adp)) { 1175 if (vid_register(adp) < 0) 1176 return ENXIO; 1177 adp->va_flags |= V_ADP_REGISTERED; 1178 } 1179 if (vga_sub_configure != NULL) 1180 (*vga_sub_configure)(0); 1181 1182 return 0; 1183} 1184 1185/* 1186 * get_info(): 1187 * Return the video_info structure of the requested video mode. 1188 * 1189 * all adapters 1190 */ 1191static int 1192vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1193{ 1194 int i; 1195 1196 if (!init_done) 1197 return 1; 1198 1199 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1200#ifndef VGA_NO_MODE_CHANGE 1201 if (adp->va_flags & V_ADP_MODECHANGE) { 1202 /* 1203 * If the parameter table entry for this mode is not found, 1204 * the mode is not supported... 1205 */ 1206 if (get_mode_param(mode) == NULL) 1207 return 1; 1208 } else 1209#endif /* VGA_NO_MODE_CHANGE */ 1210 { 1211 /* 1212 * Even if we don't support video mode switching on this adapter, 1213 * the information on the initial (thus current) video mode 1214 * should be made available. 1215 */ 1216 if (mode != adp->va_initial_mode) 1217 return 1; 1218 } 1219 1220 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1221 if (bios_vmode[i].vi_mode == NA) 1222 continue; 1223 if (mode == bios_vmode[i].vi_mode) { 1224 *info = bios_vmode[i]; 1225 return 0; 1226 } 1227 } 1228 return 1; 1229} 1230 1231/* 1232 * query_mode(): 1233 * Find a video mode matching the requested parameters. 1234 * Fields filled with 0 are considered "don't care" fields and 1235 * match any modes. 1236 * 1237 * all adapters 1238 */ 1239static int 1240vga_query_mode(video_adapter_t *adp, video_info_t *info) 1241{ 1242 video_info_t buf; 1243 int i; 1244 1245 if (!init_done) 1246 return -1; 1247 1248 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1249 if (bios_vmode[i].vi_mode == NA) 1250 continue; 1251 1252 if ((info->vi_width != 0) 1253 && (info->vi_width != bios_vmode[i].vi_width)) 1254 continue; 1255 if ((info->vi_height != 0) 1256 && (info->vi_height != bios_vmode[i].vi_height)) 1257 continue; 1258 if ((info->vi_cwidth != 0) 1259 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1260 continue; 1261 if ((info->vi_cheight != 0) 1262 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1263 continue; 1264 if ((info->vi_depth != 0) 1265 && (info->vi_depth != bios_vmode[i].vi_depth)) 1266 continue; 1267 if ((info->vi_planes != 0) 1268 && (info->vi_planes != bios_vmode[i].vi_planes)) 1269 continue; 1270 /* XXX: should check pixel format, memory model */ 1271 if ((info->vi_flags != 0) 1272 && (info->vi_flags != bios_vmode[i].vi_flags)) 1273 continue; 1274 1275 /* verify if this mode is supported on this adapter */ 1276 if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf)) 1277 continue; 1278 return bios_vmode[i].vi_mode; 1279 } 1280 return -1; 1281} 1282 1283/* 1284 * set_mode(): 1285 * Change the video mode. 1286 * 1287 * EGA/VGA 1288 */ 1289static int 1290vga_set_mode(video_adapter_t *adp, int mode) 1291{ 1292#ifndef VGA_NO_MODE_CHANGE 1293 video_info_t info; 1294 adp_state_t params; 1295 1296 prologue(adp, V_ADP_MODECHANGE, 1); 1297 1298 mode = map_gen_mode_num(adp->va_type, 1299 adp->va_flags & V_ADP_COLOR, mode); 1300 if (vga_get_info(adp, mode, &info)) 1301 return 1; 1302 params.sig = V_STATE_SIG; 1303 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1304 1305 switch (mode) { 1306 case M_VGA_C80x60: case M_VGA_M80x60: 1307 params.regs[2] = 0x08; 1308 params.regs[19] = 0x47; 1309 goto special_480l; 1310 1311 case M_VGA_C80x30: case M_VGA_M80x30: 1312 params.regs[19] = 0x4f; 1313special_480l: 1314 params.regs[9] |= 0xc0; 1315 params.regs[16] = 0x08; 1316 params.regs[17] = 0x3e; 1317 params.regs[26] = 0xea; 1318 params.regs[28] = 0xdf; 1319 params.regs[31] = 0xe7; 1320 params.regs[32] = 0x04; 1321 goto setup_mode; 1322 1323 case M_ENH_C80x43: case M_ENH_B80x43: 1324 params.regs[28] = 87; 1325 goto special_80x50; 1326 1327 case M_VGA_C80x50: case M_VGA_M80x50: 1328special_80x50: 1329 params.regs[2] = 8; 1330 params.regs[19] = 7; 1331 goto setup_mode; 1332 1333 case M_VGA_C40x25: case M_VGA_C80x25: 1334 case M_VGA_M80x25: 1335 case M_B40x25: case M_C40x25: 1336 case M_B80x25: case M_C80x25: 1337 case M_ENH_B40x25: case M_ENH_C40x25: 1338 case M_ENH_B80x25: case M_ENH_C80x25: 1339 case M_EGAMONO80x25: 1340 1341setup_mode: 1342 vga_load_state(adp, ¶ms); 1343 break; 1344 1345 case M_VGA_MODEX: 1346 /* "unchain" the VGA mode */ 1347 params.regs[5-1+0x04] &= 0xf7; 1348 params.regs[5-1+0x04] |= 0x04; 1349 /* turn off doubleword mode */ 1350 params.regs[10+0x14] &= 0xbf; 1351 /* turn off word adressing */ 1352 params.regs[10+0x17] |= 0x40; 1353 /* set logical screen width */ 1354 params.regs[10+0x13] = 80; 1355 /* set 240 lines */ 1356 params.regs[10+0x11] = 0x2c; 1357 params.regs[10+0x06] = 0x0d; 1358 params.regs[10+0x07] = 0x3e; 1359 params.regs[10+0x10] = 0xea; 1360 params.regs[10+0x11] = 0xac; 1361 params.regs[10+0x12] = 0xdf; 1362 params.regs[10+0x15] = 0xe7; 1363 params.regs[10+0x16] = 0x06; 1364 /* set vertical sync polarity to reflect aspect ratio */ 1365 params.regs[9] = 0xe3; 1366 goto setup_grmode; 1367 1368 case M_BG320: case M_CG320: case M_BG640: 1369 case M_CG320_D: case M_CG640_E: 1370 case M_CG640x350: case M_ENH_CG640: 1371 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1372 1373setup_grmode: 1374 vga_load_state(adp, ¶ms); 1375 break; 1376 1377 default: 1378 return 1; 1379 } 1380 1381 adp->va_mode = mode; 1382 update_adapter_info(adp, &info); 1383 1384 /* move hardware cursor out of the way */ 1385 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1386 1387 return 0; 1388#else /* VGA_NO_MODE_CHANGE */ 1389 return 1; 1390#endif /* VGA_NO_MODE_CHANGE */ 1391} 1392 1393#ifndef VGA_NO_FONT_LOADING 1394 1395static void 1396set_font_mode(video_adapter_t *adp, u_char *buf) 1397{ 1398 u_char *mp; 1399 int s; 1400 1401 s = splhigh(); 1402 1403 /* save register values */ 1404 if (adp->va_type == KD_VGA) { 1405 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1406 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1407 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1408 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1409 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1410 inb(adp->va_crtc_addr + 6); 1411 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1412 } else /* if (adp->va_type == KD_EGA) */ { 1413 /* 1414 * EGA cannot be read; copy parameters from the mode parameter 1415 * table. 1416 */ 1417 mp = get_mode_param(adp->va_mode); 1418 buf[0] = mp[5 + 0x02 - 1]; 1419 buf[1] = mp[5 + 0x04 - 1]; 1420 buf[2] = mp[55 + 0x04]; 1421 buf[3] = mp[55 + 0x05]; 1422 buf[4] = mp[55 + 0x06]; 1423 buf[5] = mp[35 + 0x10]; 1424 } 1425 1426 /* setup vga for loading fonts */ 1427 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1428 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1429 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1430 outb(ATC, 0x20); /* enable palette */ 1431 1432#if VGA_SLOW_IOACCESS 1433#ifdef VGA_ALT_SEQACCESS 1434 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1435#endif 1436 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1437 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1438#ifdef VGA_ALT_SEQACCESS 1439 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1440#endif 1441 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1442 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1443 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1444#else /* VGA_SLOW_IOACCESS */ 1445#ifdef VGA_ALT_SEQACCESS 1446 outw(TSIDX, 0x0100); 1447#endif 1448 outw(TSIDX, 0x0402); 1449 outw(TSIDX, 0x0704); 1450#ifdef VGA_ALT_SEQACCESS 1451 outw(TSIDX, 0x0300); 1452#endif 1453 outw(GDCIDX, 0x0204); 1454 outw(GDCIDX, 0x0005); 1455 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1456#endif /* VGA_SLOW_IOACCESS */ 1457 1458 splx(s); 1459} 1460 1461static void 1462set_normal_mode(video_adapter_t *adp, u_char *buf) 1463{ 1464 int s; 1465 1466 s = splhigh(); 1467 1468 /* setup vga for normal operation mode again */ 1469 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1470 outb(ATC, 0x10); outb(ATC, buf[5]); 1471 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1472 outb(ATC, 0x20); /* enable palette */ 1473 1474#if VGA_SLOW_IOACCESS 1475#ifdef VGA_ALT_SEQACCESS 1476 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1477#endif 1478 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1479 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1480#ifdef VGA_ALT_SEQACCESS 1481 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1482#endif 1483 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1484 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1485 if (adp->va_crtc_addr == MONO_CRTC) { 1486 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1487 } else { 1488 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1489 } 1490#else /* VGA_SLOW_IOACCESS */ 1491#ifdef VGA_ALT_SEQACCESS 1492 outw(TSIDX, 0x0100); 1493#endif 1494 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1495 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1496#ifdef VGA_ALT_SEQACCESS 1497 outw(TSIDX, 0x0300); 1498#endif 1499 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1500 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1501 if (adp->va_crtc_addr == MONO_CRTC) 1502 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1503 else 1504 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1505#endif /* VGA_SLOW_IOACCESS */ 1506 1507 splx(s); 1508} 1509 1510#endif /* VGA_NO_FONT_LOADING */ 1511 1512/* 1513 * save_font(): 1514 * Read the font data in the requested font page from the video adapter. 1515 * 1516 * EGA/VGA 1517 */ 1518static int 1519vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1520 int ch, int count) 1521{ 1522#ifndef VGA_NO_FONT_LOADING 1523 u_char buf[PARAM_BUFSIZE]; 1524 u_int32_t segment; 1525 int c; 1526#ifdef VGA_ALT_SEQACCESS 1527 int s; 1528 u_char val = 0; 1529#endif 1530 1531 prologue(adp, V_ADP_FONT, 1); 1532 1533 if (fontsize < 14) { 1534 /* FONT_8 */ 1535 fontsize = 8; 1536 } else if (fontsize >= 32) { 1537 fontsize = 32; 1538 } else if (fontsize >= 16) { 1539 /* FONT_16 */ 1540 fontsize = 16; 1541 } else { 1542 /* FONT_14 */ 1543 fontsize = 14; 1544 } 1545 1546 if (page < 0 || page >= 8) 1547 return 1; 1548 segment = FONT_BUF + 0x4000*page; 1549 if (page > 3) 1550 segment -= 0xe000; 1551 1552#ifdef VGA_ALT_SEQACCESS 1553 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1554 s = splhigh(); 1555 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1556 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1557 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1558 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1559 splx(s); 1560 } 1561#endif 1562 1563 set_font_mode(adp, buf); 1564 if (fontsize == 32) { 1565 bcopy_fromio(segment + ch*32, data, fontsize*count); 1566 } else { 1567 for (c = ch; count > 0; ++c, --count) { 1568 bcopy_fromio(segment + c*32, data, fontsize); 1569 data += fontsize; 1570 } 1571 } 1572 set_normal_mode(adp, buf); 1573 1574#ifdef VGA_ALT_SEQACCESS 1575 if (adp->va_type == KD_VGA) { 1576 s = splhigh(); 1577 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1578 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1579 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1580 splx(s); 1581 } 1582#endif 1583 1584 return 0; 1585#else /* VGA_NO_FONT_LOADING */ 1586 return 1; 1587#endif /* VGA_NO_FONT_LOADING */ 1588} 1589 1590/* 1591 * load_font(): 1592 * Set the font data in the requested font page. 1593 * NOTE: it appears that some recent video adapters do not support 1594 * the font page other than 0... XXX 1595 * 1596 * EGA/VGA 1597 */ 1598static int 1599vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1600 int ch, int count) 1601{ 1602#ifndef VGA_NO_FONT_LOADING 1603 u_char buf[PARAM_BUFSIZE]; 1604 u_int32_t segment; 1605 int c; 1606#ifdef VGA_ALT_SEQACCESS 1607 int s; 1608 u_char val = 0; 1609#endif 1610 1611 prologue(adp, V_ADP_FONT, 1); 1612 1613 if (fontsize < 14) { 1614 /* FONT_8 */ 1615 fontsize = 8; 1616 } else if (fontsize >= 32) { 1617 fontsize = 32; 1618 } else if (fontsize >= 16) { 1619 /* FONT_16 */ 1620 fontsize = 16; 1621 } else { 1622 /* FONT_14 */ 1623 fontsize = 14; 1624 } 1625 1626 if (page < 0 || page >= 8) 1627 return 1; 1628 segment = FONT_BUF + 0x4000*page; 1629 if (page > 3) 1630 segment -= 0xe000; 1631 1632#ifdef VGA_ALT_SEQACCESS 1633 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1634 s = splhigh(); 1635 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1636 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1637 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1638 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1639 splx(s); 1640 } 1641#endif 1642 1643 set_font_mode(adp, buf); 1644 if (fontsize == 32) { 1645 bcopy_toio(data, segment + ch*32, fontsize*count); 1646 } else { 1647 for (c = ch; count > 0; ++c, --count) { 1648 bcopy_toio(data, segment + c*32, fontsize); 1649 data += fontsize; 1650 } 1651 } 1652 set_normal_mode(adp, buf); 1653 1654#ifdef VGA_ALT_SEQACCESS 1655 if (adp->va_type == KD_VGA) { 1656 s = splhigh(); 1657 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1658 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1659 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1660 splx(s); 1661 } 1662#endif 1663 1664 return 0; 1665#else /* VGA_NO_FONT_LOADING */ 1666 return 1; 1667#endif /* VGA_NO_FONT_LOADING */ 1668} 1669 1670/* 1671 * show_font(): 1672 * Activate the requested font page. 1673 * NOTE: it appears that some recent video adapters do not support 1674 * the font page other than 0... XXX 1675 * 1676 * EGA/VGA 1677 */ 1678static int 1679vga_show_font(video_adapter_t *adp, int page) 1680{ 1681#ifndef VGA_NO_FONT_LOADING 1682 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1683 int s; 1684 1685 prologue(adp, V_ADP_FONT, 1); 1686 if (page < 0 || page >= 8) 1687 return 1; 1688 1689 s = splhigh(); 1690 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1691 splx(s); 1692 1693 return 0; 1694#else /* VGA_NO_FONT_LOADING */ 1695 return 1; 1696#endif /* VGA_NO_FONT_LOADING */ 1697} 1698 1699/* 1700 * save_palette(): 1701 * Read DAC values. The values have expressed in 8 bits. 1702 * 1703 * VGA 1704 */ 1705static int 1706vga_save_palette(video_adapter_t *adp, u_char *palette) 1707{ 1708 int i; 1709 1710 prologue(adp, V_ADP_PALETTE, 1); 1711 1712 /* 1713 * We store 8 bit values in the palette buffer, while the standard 1714 * VGA has 6 bit DAC . 1715 */ 1716 outb(PALRADR, 0x00); 1717 for (i = 0; i < 256*3; ++i) 1718 palette[i] = inb(PALDATA) << 2; 1719 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1720 return 0; 1721} 1722 1723/* 1724 * load_palette(): 1725 * Set DAC values. 1726 * 1727 * VGA 1728 */ 1729static int 1730vga_load_palette(video_adapter_t *adp, u_char *palette) 1731{ 1732 int i; 1733 1734 prologue(adp, V_ADP_PALETTE, 1); 1735 1736 outb(PIXMASK, 0xff); /* no pixelmask */ 1737 outb(PALWADR, 0x00); 1738 for (i = 0; i < 256*3; ++i) 1739 outb(PALDATA, palette[i] >> 2); 1740 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1741 outb(ATC, 0x20); /* enable palette */ 1742 return 0; 1743} 1744 1745/* 1746 * set_border(): 1747 * Change the border color. 1748 * 1749 * CGA/EGA/VGA 1750 */ 1751static int 1752vga_set_border(video_adapter_t *adp, int color) 1753{ 1754 prologue(adp, V_ADP_BORDER, 1); 1755 1756 switch (adp->va_type) { 1757 case KD_EGA: 1758 case KD_VGA: 1759 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1760 outb(ATC, 0x31); outb(ATC, color & 0xff); 1761 break; 1762 case KD_CGA: 1763 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 1764 break; 1765 case KD_MONO: 1766 case KD_HERCULES: 1767 default: 1768 break; 1769 } 1770 return 0; 1771} 1772 1773/* 1774 * save_state(): 1775 * Read video register values. 1776 * NOTE: this function only reads the standard EGA/VGA registers. 1777 * any extra/extended registers of SVGA adapters are not saved. 1778 * 1779 * VGA 1780 */ 1781static int 1782vga_save_state(video_adapter_t *adp, void *p, size_t size) 1783{ 1784 video_info_t info; 1785 u_char *buf; 1786 int crtc_addr; 1787 int i, j; 1788 int s; 1789 1790 if (size == 0) { 1791 /* return the required buffer size */ 1792 prologue(adp, V_ADP_STATESAVE, 0); 1793 return sizeof(adp_state_t); 1794 } else { 1795 prologue(adp, V_ADP_STATESAVE, 1); 1796 if (size < sizeof(adp_state_t)) 1797 return 1; 1798 } 1799 1800 ((adp_state_t *)p)->sig = V_STATE_SIG; 1801 buf = ((adp_state_t *)p)->regs; 1802 bzero(buf, V_MODE_PARAM_SIZE); 1803 crtc_addr = adp->va_crtc_addr; 1804 1805 s = splhigh(); 1806 1807 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1808 for (i = 0, j = 5; i < 4; i++) { 1809 outb(TSIDX, i + 1); 1810 buf[j++] = inb(TSREG); 1811 } 1812 buf[9] = inb(MISC + 10); /* dot-clock */ 1813 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1814 1815 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 1816 outb(crtc_addr, i); 1817 buf[j++] = inb(crtc_addr + 1); 1818 } 1819 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 1820 inb(crtc_addr + 6); /* reset flip-flop */ 1821 outb(ATC, i); 1822 buf[j++] = inb(ATC + 1); 1823 } 1824 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 1825 outb(GDCIDX, i); 1826 buf[j++] = inb(GDCREG); 1827 } 1828 inb(crtc_addr + 6); /* reset flip-flop */ 1829 outb(ATC, 0x20); /* enable palette */ 1830 1831 splx(s); 1832 1833#if 1 1834 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 1835 if (info.vi_flags & V_INFO_GRAPHICS) { 1836 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 1837 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 1838 } else { 1839 buf[0] = info.vi_width; /* COLS */ 1840 buf[1] = info.vi_height - 1; /* ROWS */ 1841 } 1842 buf[2] = info.vi_cheight; /* POINTS */ 1843 } else { 1844 /* XXX: shouldn't be happening... */ 1845 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 1846 adp->va_unit, adp->va_name); 1847 } 1848#else 1849 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 1850 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 1851 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 1852 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 1853 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 1854#endif 1855 1856 return 0; 1857} 1858 1859/* 1860 * load_state(): 1861 * Set video registers at once. 1862 * NOTE: this function only updates the standard EGA/VGA registers. 1863 * any extra/extended registers of SVGA adapters are not changed. 1864 * 1865 * EGA/VGA 1866 */ 1867static int 1868vga_load_state(video_adapter_t *adp, void *p) 1869{ 1870 u_char *buf; 1871 int crtc_addr; 1872 int s; 1873 int i; 1874 1875 prologue(adp, V_ADP_STATELOAD, 1); 1876 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1877 return 1; 1878 1879 buf = ((adp_state_t *)p)->regs; 1880 crtc_addr = adp->va_crtc_addr; 1881 1882 s = splhigh(); 1883 1884 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1885 for (i = 0; i < 4; ++i) { /* program sequencer */ 1886 outb(TSIDX, i + 1); 1887 outb(TSREG, buf[i + 5]); 1888 } 1889 outb(MISC, buf[9]); /* set dot-clock */ 1890 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1891 outb(crtc_addr, 0x11); 1892 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 1893 for (i = 0; i < 25; ++i) { /* program crtc */ 1894 outb(crtc_addr, i); 1895 outb(crtc_addr + 1, buf[i + 10]); 1896 } 1897 inb(crtc_addr+6); /* reset flip-flop */ 1898 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 1899 outb(ATC, i); 1900 outb(ATC, buf[i + 35]); 1901 } 1902 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 1903 outb(GDCIDX, i); 1904 outb(GDCREG, buf[i + 55]); 1905 } 1906 inb(crtc_addr + 6); /* reset flip-flop */ 1907 outb(ATC, 0x20); /* enable palette */ 1908 1909#if notyet /* a temporary workaround for kernel panic, XXX */ 1910#ifndef VGA_NO_BIOS 1911 if (adp->va_unit == V_ADP_PRIMARY) { 1912 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 1913 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 1914 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 1915#if 0 1916 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 1917 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 1918#endif 1919 } 1920#endif /* VGA_NO_BIOS */ 1921#endif /* notyet */ 1922 1923 splx(s); 1924 return 0; 1925} 1926 1927/* 1928 * set_origin(): 1929 * Change the origin (window mapping) of the banked frame buffer. 1930 */ 1931static int 1932vga_set_origin(video_adapter_t *adp, off_t offset) 1933{ 1934 /* 1935 * The standard video modes do not require window mapping; 1936 * always return error. 1937 */ 1938 return 1; 1939} 1940 1941/* 1942 * read_hw_cursor(): 1943 * Read the position of the hardware text cursor. 1944 * 1945 * all adapters 1946 */ 1947static int 1948vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1949{ 1950 u_int16_t off; 1951 int s; 1952 1953 if (!init_done) 1954 return 1; 1955 1956 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 1957 return 1; 1958 1959 s = spltty(); 1960 outb(adp->va_crtc_addr, 14); 1961 off = inb(adp->va_crtc_addr + 1); 1962 outb(adp->va_crtc_addr, 15); 1963 off = (off << 8) | inb(adp->va_crtc_addr + 1); 1964 splx(s); 1965 1966 *row = off / adp->va_info.vi_width; 1967 *col = off % adp->va_info.vi_width; 1968 1969 return 0; 1970} 1971 1972/* 1973 * set_hw_cursor(): 1974 * Move the hardware text cursor. If col and row are both -1, 1975 * the cursor won't be shown. 1976 * 1977 * all adapters 1978 */ 1979static int 1980vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 1981{ 1982 u_int16_t off; 1983 int s; 1984 1985 if (!init_done) 1986 return 1; 1987 1988 if ((col == -1) && (row == -1)) { 1989 off = -1; 1990 } else { 1991 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 1992 return 1; 1993 off = row*adp->va_info.vi_width + col; 1994 } 1995 1996 s = spltty(); 1997 outb(adp->va_crtc_addr, 14); 1998 outb(adp->va_crtc_addr + 1, off >> 8); 1999 outb(adp->va_crtc_addr, 15); 2000 outb(adp->va_crtc_addr + 1, off & 0x00ff); 2001 splx(s); 2002 2003 return 0; 2004} 2005 2006/* 2007 * set_hw_cursor_shape(): 2008 * Change the shape of the hardware text cursor. If the height is 2009 * zero or negative, the cursor won't be shown. 2010 * 2011 * all adapters 2012 */ 2013static int 2014vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 2015 int celsize, int blink) 2016{ 2017 int s; 2018 2019 if (!init_done) 2020 return 1; 2021 2022 s = spltty(); 2023 switch (adp->va_type) { 2024 case KD_VGA: 2025 case KD_CGA: 2026 case KD_MONO: 2027 case KD_HERCULES: 2028 default: 2029 if (height <= 0) { 2030 /* make the cursor invisible */ 2031 outb(adp->va_crtc_addr, 10); 2032 outb(adp->va_crtc_addr + 1, 32); 2033 outb(adp->va_crtc_addr, 11); 2034 outb(adp->va_crtc_addr + 1, 0); 2035 } else { 2036 outb(adp->va_crtc_addr, 10); 2037 outb(adp->va_crtc_addr + 1, celsize - base - height); 2038 outb(adp->va_crtc_addr, 11); 2039 outb(adp->va_crtc_addr + 1, celsize - base - 1); 2040 } 2041 break; 2042 case KD_EGA: 2043 if (height <= 0) { 2044 /* make the cursor invisible */ 2045 outb(adp->va_crtc_addr, 10); 2046 outb(adp->va_crtc_addr + 1, celsize); 2047 outb(adp->va_crtc_addr, 11); 2048 outb(adp->va_crtc_addr + 1, 0); 2049 } else { 2050 outb(adp->va_crtc_addr, 10); 2051 outb(adp->va_crtc_addr + 1, celsize - base - height); 2052 outb(adp->va_crtc_addr, 11); 2053 outb(adp->va_crtc_addr + 1, celsize - base); 2054 } 2055 break; 2056 } 2057 splx(s); 2058 2059 return 0; 2060} 2061 2062/* 2063 * mmap(): 2064 * Mmap frame buffer. 2065 * 2066 * all adapters 2067 */ 2068static int 2069vga_mmap(video_adapter_t *adp, vm_offset_t offset) 2070{ 2071 if (offset > 0x20000 - PAGE_SIZE) 2072 return -1; 2073#ifdef __i386__ 2074 return i386_btop((VIDEO_BUF_BASE + offset)); 2075#endif 2076#ifdef __alpha__ 2077 return alpha_btop((VIDEO_BUF_BASE + offset)); 2078#endif 2079} 2080 2081static void 2082dump_buffer(u_char *buf, size_t len) 2083{ 2084 int i; 2085 2086 for(i = 0; i < len;) { 2087 printf("%02x ", buf[i]); 2088 if ((++i % 16) == 0) 2089 printf("\n"); 2090 } 2091} 2092 2093/* 2094 * diag(): 2095 * Print some information about the video adapter and video modes, 2096 * with requested level of details. 2097 * 2098 * all adapters 2099 */ 2100static int 2101vga_diag(video_adapter_t *adp, int level) 2102{ 2103#if FB_DEBUG > 1 2104 video_info_t info; 2105#endif 2106 u_char *mp; 2107 2108 if (!init_done) 2109 return 1; 2110 2111#if FB_DEBUG > 1 2112#ifndef VGA_NO_BIOS 2113 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", 2114 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); 2115 printf("vga: CRTC:0x%x, video option:0x%02x, ", 2116 readw(BIOS_PADDRTOVADDR(0x463)), 2117 readb(BIOS_PADDRTOVADDR(0x487))); 2118 printf("rows:%d, cols:%d, font height:%d\n", 2119 readb(BIOS_PADDRTOVADDR(0x44a)), 2120 readb(BIOS_PADDRTOVADDR(0x484)) + 1, 2121 readb(BIOS_PADDRTOVADDR(0x485))); 2122#endif /* VGA_NO_BIOS */ 2123#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2124 printf("vga: param table EGA/VGA:%p", video_mode_ptr); 2125 printf(", CGA/MDA:%p\n", video_mode_ptr2); 2126#endif 2127 printf("vga: rows_offset:%d\n", rows_offset); 2128#endif /* FB_DEBUG > 1 */ 2129 2130 fb_dump_adp_info(DRIVER_NAME, adp, level); 2131 2132#if FB_DEBUG > 1 2133 if (adp->va_flags & V_ADP_MODECHANGE) { 2134 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 2135 if (bios_vmode[i].vi_mode == NA) 2136 continue; 2137 if (get_mode_param(bios_vmode[i].vi_mode) == NULL) 2138 continue; 2139 fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level); 2140 } 2141 } else { 2142 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ 2143 fb_dump_mode_info(DRIVER_NAME, adp, &info, level); 2144 } 2145#endif /* FB_DEBUG > 1 */ 2146 2147 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) 2148 return 0; 2149#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2150 if (video_mode_ptr == NULL) 2151 printf("vga%d: %s: WARNING: video mode switching is not " 2152 "fully supported on this adapter\n", 2153 adp->va_unit, adp->va_name); 2154#endif 2155 if (level <= 0) 2156 return 0; 2157 2158 if (adp->va_type == KD_VGA) { 2159 printf("VGA parameters upon power-up\n"); 2160 dump_buffer(adpstate.regs, sizeof(adpstate.regs)); 2161 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); 2162 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); 2163 } 2164 2165 mp = get_mode_param(adp->va_initial_mode); 2166 if (mp == NULL) /* this shouldn't be happening */ 2167 return 0; 2168 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); 2169 dump_buffer(mp, V_MODE_PARAM_SIZE); 2170 2171 return 0; 2172} 2173 2174#endif /* NVGA > 0 */ 2175