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sys/i386/isa/vga_isa.c
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1 /*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * Copyright (c) 1992-1998 Søren 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 * $FreeBSD$ 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 #ifndef __i386__ 56 #include <isa/isareg.h> 57 #include <isa/isavar.h> 58 #else 59 #include <i386/isa/isa.h> 60 #include <i386/isa/isa_device.h> 61 #endif 62 63 #define DRIVER_NAME "vga" 64 65 /* cdev driver declaration */ 66 67 #define ISAVGA_UNIT(dev) minor(dev) 68 #define ISAVGA_MKMINOR(unit) (unit) 69 70 typedef struct isavga_softc { 71 video_adapter_t *adp; 72 } isavga_softc_t; 73 74 #ifndef __i386__ 75 76 #define ISAVGA_SOFTC(unit) \ 77 ((isavga_softc_t *)devclass_get_softc(isavga_devclass, unit)) 78 79 devclass_t isavga_devclass; 80 81 static int isavga_probe(device_t dev); 82 static int isavga_attach(device_t dev); 83 84 static device_method_t isavga_methods[] = { 85 DEVMETHOD(device_probe, isavga_probe), 86 DEVMETHOD(device_attach, isavga_attach), 87 { 0, 0 } 88 }; 89 90 static driver_t isavga_driver = { 91 DRIVER_NAME, 92 isavga_methods, 93 DRIVER_TYPE_TTY, 94 sizeof(isavga_softc_t), 95 }; 96 97 #else /* __i386__ */ 98 99 #define ISAVGA_SOFTC(unit) (isavga_softc[unit]) 100 101 static isavga_softc_t *isavga_softc[NVGA]; 102 103 static int isavga_probe(struct isa_device *dev); 104 static int isavga_attach(struct isa_device *dev); 105 106 struct isa_driver vgadriver = { 107 isavga_probe, 108 isavga_attach, 109 DRIVER_NAME, 110 0, 111 }; 112 113 #endif /* __i386__ */ 114 115 static int isavga_probe_unit(int unit, isavga_softc_t *sc, 116 int flags); 117 static int isavga_attach_unit(int unit, isavga_softc_t *sc, 118 int flags); 119 120 #ifdef FB_INSTALL_CDEV 121 122 static d_open_t isavgaopen; 123 static d_close_t isavgaclose; 124 static d_read_t isavgaread; 125 static d_ioctl_t isavgaioctl; 126 127 static struct cdevsw vga_cdevsw = { 128 isavgaopen, isavgaclose, noread, nowrite, /* ?? */ 129 isavgaioctl, nostop, nullreset, nodevtotty, 130 seltrue, nommap, NULL, DRIVER_NAME, 131 NULL, -1, nodump, nopsize, 132 }; 133 134 #endif /* FB_INSTALL_CDEV */ 135 136 #ifndef __i386__ 137 138 static int 139 isavga_probe(device_t dev) 140 { 141 isavga_softc_t *sc; 142 143 sc = device_get_softc(dev); 144 return isavga_probe_unit(device_get_unit(dev), sc, isa_get_flags(dev)); 145 } 146 147 static int 148 isavga_attach(device_t dev) 149 { 150 isavga_softc_t *sc; 151 152 sc = device_get_softc(dev); 153 return isavga_attach_unit(device_get_unit(dev), sc, isa_get_flags(dev)); 154 } 155 156 #else /* __i386__ */ 157 158 static int 159 isavga_probe(struct isa_device *dev) 160 { 161 isavga_softc_t *sc; 162 int error; 163 164 if (dev->id_unit >= sizeof(isavga_softc)/sizeof(isavga_softc[0])) 165 return 0; 166 sc = isavga_softc[dev->id_unit] 167 = malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT); 168 if (sc == NULL) 169 return 0; 170 171 error = isavga_probe_unit(dev->id_unit, sc, dev->id_flags); 172 if (error) { 173 isavga_softc[dev->id_unit] = NULL; 174 free(sc, M_DEVBUF); 175 return 0; 176 } 177 178 dev->id_iobase = sc->adp->va_io_base; 179 dev->id_maddr = (caddr_t)BIOS_PADDRTOVADDR(sc->adp->va_mem_base); 180 dev->id_msize = sc->adp->va_mem_size; 181 182 return sc->adp->va_io_size; 183 } 184 185 static int 186 isavga_attach(struct isa_device *dev) 187 { 188 isavga_softc_t *sc; 189 190 if (dev->id_unit >= sizeof(isavga_softc)/sizeof(isavga_softc[0])) 191 return 0; 192 sc = isavga_softc[dev->id_unit]; 193 if (sc == NULL) 194 return 0; 195 196 return ((isavga_attach_unit(dev->id_unit, sc, dev->id_flags)) ? 0 : 1); 197 } 198 199 #endif /* __i386__ */ 200 201 static int 202 isavga_probe_unit(int unit, isavga_softc_t *sc, int flags) 203 { 204 video_switch_t *sw; 205 206 bzero(sc, sizeof(*sc)); 207 sw = vid_get_switch(DRIVER_NAME); 208 if (sw == NULL) 209 return 0; 210 return (*sw->probe)(unit, &sc->adp, NULL, flags); 211 } 212 213 static int 214 isavga_attach_unit(int unit, isavga_softc_t *sc, int flags) 215 { 216 video_switch_t *sw; 217 int error; 218 219 sw = vid_get_switch(DRIVER_NAME); 220 if (sw == NULL) 221 return ENXIO; 222 223 error = (*sw->init)(unit, sc->adp, flags); 224 if (error) 225 return ENXIO; 226 227 #ifdef FB_INSTALL_CDEV 228 /* attach a virtual frame buffer device */ 229 error = fb_attach(makedev(0, ISAVGA_MKMINOR(unit)), scp->adp, 230 &vga_cdevsw); 231 if (error) 232 return error; 233 #endif /* FB_INSTALL_CDEV */ 234 235 if (bootverbose) 236 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); 237 238 return 0; 239 } 240 241 /* LOW-LEVEL */ 242 243 #include <machine/clock.h> 244 #include <machine/pc/vesa.h> 245 246 #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED) 247 #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED) 248 #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED) 249 250 /* for compatibility with old kernel options */ 251 #ifdef SC_ALT_SEQACCESS 252 #undef SC_ALT_SEQACCESS 253 #undef VGA_ALT_SEQACCESS 254 #define VGA_ALT_SEQACCESS 1 255 #endif 256 257 #ifdef SLOW_VGA 258 #undef SLOW_VGA 259 #undef VGA_SLOW_IOACCESS 260 #define VGA_SLOW_IOACCESS 1 261 #endif 262 263 /* architecture dependent option */ 264 #ifdef __alpha__ 265 #define VGA_NO_BIOS 1 266 #endif 267 268 /* this should really be in `rtc.h' */ 269 #define RTC_EQUIPMENT 0x14 270 271 /* various sizes */ 272 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1) 273 #define V_MODE_PARAM_SIZE 64 274 275 /* video adapter state buffer */ 276 struct adp_state { 277 int sig; 278 #define V_STATE_SIG 0x736f6962 279 u_char regs[V_MODE_PARAM_SIZE]; 280 }; 281 typedef struct adp_state adp_state_t; 282 283 /* video adapter information */ 284 #define DCC_MONO 0 285 #define DCC_CGA40 1 286 #define DCC_CGA80 2 287 #define DCC_EGAMONO 3 288 #define DCC_EGA40 4 289 #define DCC_EGA80 5 290 291 /* 292 * NOTE: `va_window' should have a virtual address, but is initialized 293 * with a physical address in the following table, as verify_adapter() 294 * will perform address conversion at run-time. 295 */ 296 static video_adapter_t adapter_init_value[] = { 297 /* DCC_MONO */ 298 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC, 299 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 300 0, 0, 0, 7, 0, }, 301 /* DCC_CGA40 */ 302 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 303 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 304 0, 0, 0, 3, 0, }, 305 /* DCC_CGA80 */ 306 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 307 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 308 0, 0, 0, 3, 0, }, 309 /* DCC_EGAMONO */ 310 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC, 311 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 312 0, 0, 0, 7, 0, }, 313 /* DCC_EGA40 */ 314 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 315 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 316 0, 0, 0, 3, 0, }, 317 /* DCC_EGA80 */ 318 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 319 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 320 0, 0, 0, 3, 0, }, 321 }; 322 323 static video_adapter_t biosadapter[2]; 324 static int biosadapters = 0; 325 326 /* video driver declarations */ 327 static int vga_configure(int flags); 328 int (*vga_sub_configure)(int flags); 329 static int vga_nop(void); 330 static vi_probe_t vga_probe; 331 static vi_init_t vga_init; 332 static vi_get_info_t vga_get_info; 333 static vi_query_mode_t vga_query_mode; 334 static vi_set_mode_t vga_set_mode; 335 static vi_save_font_t vga_save_font; 336 static vi_load_font_t vga_load_font; 337 static vi_show_font_t vga_show_font; 338 static vi_save_palette_t vga_save_palette; 339 static vi_load_palette_t vga_load_palette; 340 static vi_set_border_t vga_set_border; 341 static vi_save_state_t vga_save_state; 342 static vi_load_state_t vga_load_state; 343 static vi_set_win_org_t vga_set_origin; 344 static vi_read_hw_cursor_t vga_read_hw_cursor; 345 static vi_set_hw_cursor_t vga_set_hw_cursor; 346 static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape; 347 static vi_mmap_t vga_mmap; 348 static vi_diag_t vga_diag; 349 350 static video_switch_t vgavidsw = { 351 vga_probe, 352 vga_init, 353 vga_get_info, 354 vga_query_mode, 355 vga_set_mode, 356 vga_save_font, 357 vga_load_font, 358 vga_show_font, 359 vga_save_palette, 360 vga_load_palette, 361 vga_set_border, 362 vga_save_state, 363 vga_load_state, 364 vga_set_origin, 365 vga_read_hw_cursor, 366 vga_set_hw_cursor, 367 vga_set_hw_cursor_shape, 368 (vi_blank_display_t *)vga_nop, 369 vga_mmap, 370 vga_diag, 371 }; 372 373 VIDEO_DRIVER(mda, vgavidsw, NULL); 374 VIDEO_DRIVER(cga, vgavidsw, NULL); 375 VIDEO_DRIVER(ega, vgavidsw, NULL); 376 VIDEO_DRIVER(vga, vgavidsw, vga_configure); 377 378 /* VGA BIOS standard video modes */ 379 #define EOT (-1) 380 #define NA (-2) 381 382 static video_info_t bios_vmode[] = { 383 /* CGA */ 384 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1, 385 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 386 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, 387 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 388 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, 389 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 390 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, 391 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 392 /* EGA */ 393 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, 394 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 395 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, 396 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 397 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, 398 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 399 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, 400 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 401 /* VGA */ 402 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, 403 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 404 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, 405 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 406 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, 407 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 408 /* MDA */ 409 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, 410 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 411 /* EGA */ 412 { M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1, 413 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 414 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, 415 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 416 /* VGA */ 417 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, 418 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 419 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, 420 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 421 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, 422 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 423 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, 424 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 425 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, 426 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 427 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, 428 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 429 #ifndef VGA_NO_MODE_CHANGE 430 /* CGA */ 431 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 432 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 433 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 434 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 435 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1, 436 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 437 /* EGA */ 438 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4, 439 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 440 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4, 441 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 442 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 443 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 }, 444 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 445 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 446 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2, 447 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 448 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 449 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 450 /* VGA */ 451 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 452 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 453 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 454 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 455 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1, 456 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 457 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4, 458 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 459 #endif /* VGA_NO_MODE_CHANGE */ 460 461 { EOT }, 462 }; 463 464 static int init_done = FALSE; 465 static u_char *video_mode_ptr = NULL; /* EGA/VGA */ 466 static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */ 467 static u_char *mode_map[V_MODE_MAP_SIZE]; 468 static adp_state_t adpstate; 469 static adp_state_t adpstate2; 470 static int rows_offset = 1; 471 472 /* local macros and functions */ 473 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 474 475 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 476 static void map_mode_table(u_char *map[], u_char *table, int max); 477 #endif 478 static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max, 479 int color); 480 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 481 static int map_mode_num(int mode); 482 #endif 483 static int map_gen_mode_num(int type, int color, int mode); 484 static int map_bios_mode_num(int type, int color, int bios_mode); 485 static u_char *get_mode_param(int mode); 486 #ifndef VGA_NO_BIOS 487 static void fill_adapter_param(int code, video_adapter_t *adp); 488 #endif 489 static int verify_adapter(video_adapter_t *adp); 490 static void update_adapter_info(video_adapter_t *adp, video_info_t *info); 491 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 492 #define COMP_IDENTICAL 0 493 #define COMP_SIMILAR 1 494 #define COMP_DIFFERENT 2 495 static int comp_adpregs(u_char *buf1, u_char *buf2); 496 #endif 497 static int probe_adapters(void); 498 499 #define PARAM_BUFSIZE 6 500 static void set_font_mode(video_adapter_t *adp, u_char *buf); 501 static void set_normal_mode(video_adapter_t *adp, u_char *buf); 502 503 static void dump_buffer(u_char *buf, size_t len); 504 505 #define ISMAPPED(pa, width) \ 506 (((pa) <= (u_long)0x1000 - (width)) \ 507 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width))) 508 509 #define prologue(adp, flag, err) \ 510 if (!init_done || !((adp)->va_flags & (flag))) \ 511 return (err) 512 513 /* a backdoor for the console driver */ 514 static int 515 vga_configure(int flags) 516 { 517 int i; 518 519 probe_adapters(); 520 for (i = 0; i < biosadapters; ++i) { 521 if (!probe_done(&biosadapter[i])) 522 continue; 523 biosadapter[i].va_flags |= V_ADP_INITIALIZED; 524 if (!config_done(&biosadapter[i])) { 525 if (vid_register(&biosadapter[i]) < 0) 526 continue; 527 biosadapter[i].va_flags |= V_ADP_REGISTERED; 528 } 529 } 530 if (vga_sub_configure != NULL) 531 (*vga_sub_configure)(flags); 532 533 return biosadapters; 534 } 535 536 /* local subroutines */ 537 538 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 539 /* construct the mode parameter map */ 540 static void 541 map_mode_table(u_char *map[], u_char *table, int max) 542 { 543 int i; 544 545 for(i = 0; i < max; ++i) 546 map[i] = table + i*V_MODE_PARAM_SIZE; 547 for(; i < V_MODE_MAP_SIZE; ++i) 548 map[i] = NULL; 549 } 550 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 551 552 static void 553 clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color) 554 { 555 video_info_t info; 556 int i; 557 558 /* 559 * NOTE: we don't touch `bios_vmode[]' because it is shared 560 * by all adapters. 561 */ 562 for(i = 0; i < max; ++i) { 563 if (vga_get_info(adp, i, &info)) 564 continue; 565 if ((info.vi_flags & V_INFO_COLOR) != color) 566 map[i] = NULL; 567 } 568 } 569 570 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 571 /* map the non-standard video mode to a known mode number */ 572 static int 573 map_mode_num(int mode) 574 { 575 static struct { 576 int from; 577 int to; 578 } mode_map[] = { 579 { M_ENH_B80x43, M_ENH_B80x25 }, 580 { M_ENH_C80x43, M_ENH_C80x25 }, 581 { M_VGA_M80x30, M_VGA_M80x25 }, 582 { M_VGA_C80x30, M_VGA_C80x25 }, 583 { M_VGA_M80x50, M_VGA_M80x25 }, 584 { M_VGA_C80x50, M_VGA_C80x25 }, 585 { M_VGA_M80x60, M_VGA_M80x25 }, 586 { M_VGA_C80x60, M_VGA_C80x25 }, 587 { M_VGA_MODEX, M_VGA_CG320 }, 588 }; 589 int i; 590 591 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 592 if (mode_map[i].from == mode) 593 return mode_map[i].to; 594 } 595 return mode; 596 } 597 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 598 599 /* map a generic video mode to a known mode number */ 600 static int 601 map_gen_mode_num(int type, int color, int mode) 602 { 603 static struct { 604 int from; 605 int to_color; 606 int to_mono; 607 } mode_map[] = { 608 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, }, 609 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, }, 610 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, }, 611 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, }, 612 }; 613 int i; 614 615 if (mode == M_TEXT_80x25) { 616 switch (type) { 617 618 case KD_VGA: 619 if (color) 620 return M_VGA_C80x25; 621 else 622 return M_VGA_M80x25; 623 break; 624 625 case KD_EGA: 626 if (color) 627 return M_ENH_C80x25; 628 else 629 return M_EGAMONO80x25; 630 break; 631 632 case KD_CGA: 633 return M_C80x25; 634 635 case KD_MONO: 636 case KD_HERCULES: 637 return M_EGAMONO80x25; /* XXX: this name is confusing */ 638 639 default: 640 return -1; 641 } 642 } 643 644 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 645 if (mode_map[i].from == mode) 646 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono); 647 } 648 return mode; 649 } 650 651 /* turn the BIOS video number into our video mode number */ 652 static int 653 map_bios_mode_num(int type, int color, int bios_mode) 654 { 655 static int cga_modes[7] = { 656 M_B40x25, M_C40x25, /* 0, 1 */ 657 M_B80x25, M_C80x25, /* 2, 3 */ 658 M_BG320, M_CG320, 659 M_BG640, 660 }; 661 static int ega_modes[17] = { 662 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */ 663 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */ 664 M_BG320, M_CG320, 665 M_BG640, 666 M_EGAMONO80x25, /* 7 */ 667 8, 9, 10, 11, 12, 668 M_CG320_D, 669 M_CG640_E, 670 M_ENHMONOAPA2, /* XXX: video momery > 64K */ 671 M_ENH_CG640, /* XXX: video momery > 64K */ 672 }; 673 static int vga_modes[20] = { 674 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */ 675 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */ 676 M_BG320, M_CG320, 677 M_BG640, 678 M_VGA_M80x25, /* 7 */ 679 8, 9, 10, 11, 12, 680 M_CG320_D, 681 M_CG640_E, 682 M_ENHMONOAPA2, 683 M_ENH_CG640, 684 M_BG640x480, M_CG640x480, 685 M_VGA_CG320, 686 }; 687 688 switch (type) { 689 690 case KD_VGA: 691 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0])) 692 return vga_modes[bios_mode]; 693 else if (color) 694 return M_VGA_C80x25; 695 else 696 return M_VGA_M80x25; 697 break; 698 699 case KD_EGA: 700 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0])) 701 return ega_modes[bios_mode]; 702 else if (color) 703 return M_ENH_C80x25; 704 else 705 return M_EGAMONO80x25; 706 break; 707 708 case KD_CGA: 709 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0])) 710 return cga_modes[bios_mode]; 711 else 712 return M_C80x25; 713 break; 714 715 case KD_MONO: 716 case KD_HERCULES: 717 return M_EGAMONO80x25; /* XXX: this name is confusing */ 718 719 default: 720 break; 721 } 722 return -1; 723 } 724 725 /* look up a parameter table entry */ 726 static u_char 727 *get_mode_param(int mode) 728 { 729 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 730 if (mode >= V_MODE_MAP_SIZE) 731 mode = map_mode_num(mode); 732 #endif 733 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE)) 734 return mode_map[mode]; 735 else 736 return NULL; 737 } 738 739 #ifndef VGA_NO_BIOS 740 static void 741 fill_adapter_param(int code, video_adapter_t *adp) 742 { 743 static struct { 744 int primary; 745 int secondary; 746 } dcc[] = { 747 { DCC_MONO, DCC_EGA40 /* CGA monitor */ }, 748 { DCC_MONO, DCC_EGA80 /* CGA monitor */ }, 749 { DCC_MONO, DCC_EGA80 /* CGA emulation */ }, 750 { DCC_MONO, DCC_EGA80 }, 751 { DCC_CGA40, DCC_EGAMONO }, 752 { DCC_CGA80, DCC_EGAMONO }, 753 { DCC_EGA40 /* CGA monitor */, DCC_MONO}, 754 { DCC_EGA80 /* CGA monitor */, DCC_MONO}, 755 { DCC_EGA80 /* CGA emulation */,DCC_MONO }, 756 { DCC_EGA80, DCC_MONO }, 757 { DCC_EGAMONO, DCC_CGA40 }, 758 { DCC_EGAMONO, DCC_CGA40 }, 759 }; 760 761 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) { 762 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 763 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 764 } else { 765 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary]; 766 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary]; 767 } 768 } 769 #endif /* VGA_NO_BIOS */ 770 771 static int 772 verify_adapter(video_adapter_t *adp) 773 { 774 volatile u_int16_t *buf; 775 u_int16_t v; 776 u_int32_t p; 777 778 buf = (u_int16_t *)BIOS_PADDRTOVADDR(adp->va_window); 779 v = readw(buf); 780 writew(buf, 0xA55A); 781 if (readw(buf) != 0xA55A) 782 return 1; 783 writew(buf, v); 784 785 switch (adp->va_type) { 786 787 case KD_EGA: 788 outb(adp->va_crtc_addr, 7); 789 if (inb(adp->va_crtc_addr) == 7) { 790 adp->va_type = KD_VGA; 791 adp->va_name = "vga"; 792 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; 793 } 794 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER; 795 /* the color adapter may be in the 40x25 mode... XXX */ 796 797 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 798 /* get the BIOS video mode pointer */ 799 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8); 800 p = BIOS_SADDRTOLADDR(p); 801 if (ISMAPPED(p, sizeof(u_int32_t))) { 802 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p); 803 p = BIOS_SADDRTOLADDR(p); 804 if (ISMAPPED(p, V_MODE_PARAM_SIZE)) 805 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p); 806 } 807 #endif 808 break; 809 810 case KD_CGA: 811 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; 812 /* may be in the 40x25 mode... XXX */ 813 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 814 /* get the BIOS video mode pointer */ 815 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 816 p = BIOS_SADDRTOLADDR(p); 817 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 818 #endif 819 break; 820 821 case KD_MONO: 822 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 823 /* get the BIOS video mode pointer */ 824 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 825 p = BIOS_SADDRTOLADDR(p); 826 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 827 #endif 828 break; 829 } 830 831 return 0; 832 } 833 834 static void 835 update_adapter_info(video_adapter_t *adp, video_info_t *info) 836 { 837 adp->va_flags &= ~V_ADP_COLOR; 838 adp->va_flags |= 839 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 840 adp->va_crtc_addr = 841 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 842 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window); 843 adp->va_window_size = info->vi_window_size; 844 adp->va_window_gran = info->vi_window_gran; 845 if (info->vi_buffer_size == 0) { 846 adp->va_buffer = 0; 847 adp->va_buffer_size = 0; 848 } else { 849 adp->va_buffer = BIOS_PADDRTOVADDR(info->vi_buffer); 850 adp->va_buffer_size = info->vi_buffer_size; 851 } 852 if (info->vi_mode == M_VGA_MODEX) { 853 adp->va_line_width = info->vi_width/2; 854 } else if (info->vi_flags & V_INFO_GRAPHICS) { 855 switch (info->vi_depth/info->vi_planes) { 856 case 1: 857 adp->va_line_width = info->vi_width/8; 858 break; 859 case 2: 860 adp->va_line_width = info->vi_width/4; 861 break; 862 case 4: 863 adp->va_line_width = info->vi_width/2; 864 break; 865 case 8: 866 default: /* shouldn't happen */ 867 adp->va_line_width = info->vi_width; 868 break; 869 } 870 } else { 871 adp->va_line_width = info->vi_width; 872 } 873 bcopy(info, &adp->va_info, sizeof(adp->va_info)); 874 } 875 876 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 877 /* compare two parameter table entries */ 878 static int 879 comp_adpregs(u_char *buf1, u_char *buf2) 880 { 881 static struct { 882 u_char mask; 883 } params[V_MODE_PARAM_SIZE] = { 884 0xff, 0x00, 0xff, /* COLS, ROWS, POINTS */ 885 0x00, 0x00, /* page length */ 886 0xfe, 0xff, 0xff, 0xff, /* sequencer registers */ 887 0xf3, /* misc register */ 888 0xff, 0xff, 0xff, 0x7f, 0xff, /* CRTC */ 889 0xff, 0xff, 0xff, 0x7f, 0xff, 890 0x00, 0x00, 0x00, 0x00, 0x00, 891 0x00, 0xff, 0x7f, 0xff, 0xff, 892 0x7f, 0xff, 0xff, 0xef, 0xff, 893 0xff, 0xff, 0xff, 0xff, 0xff, /* attribute controller registers */ 894 0xff, 0xff, 0xff, 0xff, 0xff, 895 0xff, 0xff, 0xff, 0xff, 0xff, 896 0xff, 0xff, 0xff, 0xff, 0xf0, 897 0xff, 0xff, 0xff, 0xff, 0xff, /* GDC register */ 898 0xff, 0xff, 0xff, 0xff, 899 }; 900 int identical = TRUE; 901 int i; 902 903 if ((buf1 == NULL) || (buf2 == NULL)) 904 return COMP_DIFFERENT; 905 906 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 907 if (params[i].mask == 0) /* don't care */ 908 continue; 909 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 910 return COMP_DIFFERENT; 911 if (buf1[i] != buf2[i]) 912 identical = FALSE; 913 } 914 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 915 } 916 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 917 918 /* probe video adapters and return the number of detected adapters */ 919 static int 920 probe_adapters(void) 921 { 922 video_adapter_t *adp; 923 video_info_t info; 924 u_char *mp; 925 int i; 926 927 /* do this test only once */ 928 if (init_done) 929 return biosadapters; 930 init_done = TRUE; 931 932 /* 933 * Locate display adapters. 934 * The AT architecture supports upto two adapters. `syscons' allows 935 * the following combinations of adapters: 936 * 1) MDA + CGA 937 * 2) MDA + EGA/VGA color 938 * 3) CGA + EGA/VGA mono 939 * Note that `syscons' doesn't bother with MCGA as it is only 940 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 941 * thus, they are not running FreeBSD! 942 * When there are two adapaters in the system, one becomes `primary' 943 * and the other `secondary'. The EGA adapter has a set of DIP 944 * switches on board for this information and the EGA BIOS copies 945 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 946 * The VGA BIOS has more sophisticated mechanism and has this 947 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 948 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 949 */ 950 951 /* 952 * Check rtc and BIOS data area. 953 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 954 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 955 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 956 * these bits in BIOSDATA_EQUIPMENT according to the monitor 957 * type detected. 958 */ 959 #ifndef VGA_NO_BIOS 960 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 961 case 0: 962 /* EGA/VGA */ 963 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 964 biosadapter); 965 break; 966 case 1: 967 /* CGA 40x25 */ 968 /* FIXME: switch to the 80x25 mode? XXX */ 969 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 970 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 971 break; 972 case 2: 973 /* CGA 80x25 */ 974 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 975 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 976 break; 977 case 3: 978 /* MDA */ 979 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 980 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 981 break; 982 } 983 #else 984 /* assume EGA/VGA? XXX */ 985 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 986 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 987 #endif /* VGA_NO_BIOS */ 988 989 biosadapters = 0; 990 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 991 ++biosadapters; 992 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 993 biosadapter[V_ADP_SECONDARY].va_mode = 994 biosadapter[V_ADP_SECONDARY].va_initial_mode = 995 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 996 biosadapter[V_ADP_SECONDARY].va_flags 997 & V_ADP_COLOR, 998 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 999 } else { 1000 biosadapter[V_ADP_SECONDARY].va_type = -1; 1001 } 1002 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 1003 ++biosadapters; 1004 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 1005 #ifndef VGA_NO_BIOS 1006 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 1007 readb(BIOS_PADDRTOVADDR(0x449)); 1008 #else 1009 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 1010 #endif 1011 biosadapter[V_ADP_PRIMARY].va_mode = 1012 biosadapter[V_ADP_PRIMARY].va_initial_mode = 1013 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 1014 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 1015 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 1016 } else { 1017 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 1018 biosadapter[V_ADP_SECONDARY].va_type = -1; 1019 } 1020 if (biosadapters == 0) 1021 return biosadapters; 1022 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 1023 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 1024 1025 #if 0 /* we don't need these... */ 1026 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 1027 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 1028 #endif 1029 1030 #if 0 1031 /* 1032 * We cannot have two video adapter of the same type; there must be 1033 * only one of color or mono adapter, or one each of them. 1034 */ 1035 if (biosadapters > 1) { 1036 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 1037 & V_ADP_COLOR)) 1038 /* we have two mono or color adapters!! */ 1039 return (biosadapters = 0); 1040 } 1041 #endif 1042 1043 /* 1044 * Ensure a zero start address. This is mainly to recover after 1045 * switching from pcvt using userconfig(). The registers are w/o 1046 * for old hardware so it's too hard to relocate the active screen 1047 * memory. 1048 * This must be done before vga_save_state() for VGA. 1049 */ 1050 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 1051 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1052 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 1053 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1054 1055 /* the video mode parameter table in EGA/VGA BIOS */ 1056 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 1057 * recognized by the video BIOS. 1058 */ 1059 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 1060 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 1061 adp = &biosadapter[V_ADP_PRIMARY]; 1062 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 1063 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 1064 adp = &biosadapter[V_ADP_SECONDARY]; 1065 } else { 1066 adp = NULL; 1067 } 1068 bzero(mode_map, sizeof(mode_map)); 1069 if (adp != NULL) { 1070 if (adp->va_type == KD_VGA) { 1071 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1072 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1073 mode_map[adp->va_initial_mode] = adpstate.regs; 1074 rows_offset = 1; 1075 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1076 if (video_mode_ptr == NULL) { 1077 mode_map[adp->va_initial_mode] = adpstate.regs; 1078 rows_offset = 1; 1079 } else { 1080 /* discard the table if we are not familiar with it... */ 1081 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1082 mp = get_mode_param(adp->va_initial_mode); 1083 if (mp != NULL) 1084 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1085 switch (comp_adpregs(adpstate.regs, mp)) { 1086 case COMP_IDENTICAL: 1087 /* 1088 * OK, this parameter table looks reasonably familiar 1089 * to us... 1090 */ 1091 /* 1092 * This is a kludge for Toshiba DynaBook SS433 1093 * whose BIOS video mode table entry has the actual # 1094 * of rows at the offset 1; BIOSes from other 1095 * manufacturers store the # of rows - 1 there. XXX 1096 */ 1097 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1098 break; 1099 1100 case COMP_SIMILAR: 1101 /* 1102 * Not exactly the same, but similar enough to be 1103 * trusted. However, use the saved register values 1104 * for the initial mode and other modes which are 1105 * based on the initial mode. 1106 */ 1107 mode_map[adp->va_initial_mode] = adpstate.regs; 1108 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1109 adpstate.regs[1] -= rows_offset - 1; 1110 break; 1111 1112 case COMP_DIFFERENT: 1113 default: 1114 /* 1115 * Don't use the paramter table in BIOS. It doesn't 1116 * look familiar to us. Video mode switching is allowed 1117 * only if the new mode is the same as or based on 1118 * the initial mode. 1119 */ 1120 video_mode_ptr = NULL; 1121 bzero(mode_map, sizeof(mode_map)); 1122 mode_map[adp->va_initial_mode] = adpstate.regs; 1123 rows_offset = 1; 1124 break; 1125 } 1126 } 1127 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1128 1129 #ifndef VGA_NO_MODE_CHANGE 1130 adp->va_flags |= V_ADP_MODECHANGE; 1131 #endif 1132 #ifndef VGA_NO_FONT_LOADING 1133 adp->va_flags |= V_ADP_FONT; 1134 #endif 1135 } else if (adp->va_type == KD_EGA) { 1136 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1137 rows_offset = 1; 1138 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1139 if (video_mode_ptr == NULL) { 1140 rows_offset = 1; 1141 } else { 1142 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1143 /* XXX how can one validate the EGA table... */ 1144 mp = get_mode_param(adp->va_initial_mode); 1145 if (mp != NULL) { 1146 adp->va_flags |= V_ADP_MODECHANGE; 1147 #ifndef VGA_NO_FONT_LOADING 1148 adp->va_flags |= V_ADP_FONT; 1149 #endif 1150 rows_offset = 1; 1151 } else { 1152 /* 1153 * This is serious. We will not be able to switch video 1154 * modes at all... 1155 */ 1156 video_mode_ptr = NULL; 1157 bzero(mode_map, sizeof(mode_map)); 1158 rows_offset = 1; 1159 } 1160 } 1161 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1162 } 1163 } 1164 1165 /* remove conflicting modes if we have more than one adapter */ 1166 if (biosadapters > 1) { 1167 for (i = 0; i < biosadapters; ++i) { 1168 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1169 continue; 1170 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1171 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1172 V_INFO_COLOR : 0); 1173 if ((biosadapter[i].va_type == KD_VGA) 1174 || (biosadapter[i].va_type == KD_EGA)) { 1175 biosadapter[i].va_io_base = 1176 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1177 IO_VGA : IO_MDA; 1178 biosadapter[i].va_io_size = 32; 1179 } 1180 } 1181 } 1182 1183 /* buffer address */ 1184 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1185 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1186 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); 1187 1188 if (biosadapters > 1) { 1189 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1190 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1191 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); 1192 } 1193 1194 /* 1195 * XXX: we should verify the following values for the primary adapter... 1196 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1197 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1198 * ? 0 : V_ADP_COLOR; 1199 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1200 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1201 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1202 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1203 */ 1204 1205 return biosadapters; 1206 } 1207 1208 /* entry points */ 1209 1210 static int 1211 vga_nop(void) 1212 { 1213 return 0; 1214 } 1215 1216 static int 1217 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1218 { 1219 probe_adapters(); 1220 if (unit >= biosadapters) 1221 return ENXIO; 1222 1223 *adpp = &biosadapter[unit]; 1224 1225 return 0; 1226 } 1227 1228 static int 1229 vga_init(int unit, video_adapter_t *adp, int flags) 1230 { 1231 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1232 return ENXIO; 1233 1234 if (!init_done(adp)) { 1235 /* nothing to do really... */ 1236 adp->va_flags |= V_ADP_INITIALIZED; 1237 } 1238 1239 if (!config_done(adp)) { 1240 if (vid_register(adp) < 0) 1241 return ENXIO; 1242 adp->va_flags |= V_ADP_REGISTERED; 1243 } 1244 if (vga_sub_configure != NULL) 1245 (*vga_sub_configure)(0); 1246 1247 return 0; 1248 } 1249 1250 /* 1251 * get_info(): 1252 * Return the video_info structure of the requested video mode. 1253 * 1254 * all adapters 1255 */ 1256 static int 1257 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1258 { 1259 int i; 1260 1261 if (!init_done) 1262 return 1; 1263 1264 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1265 #ifndef VGA_NO_MODE_CHANGE 1266 if (adp->va_flags & V_ADP_MODECHANGE) { 1267 /* 1268 * If the parameter table entry for this mode is not found, 1269 * the mode is not supported... 1270 */ 1271 if (get_mode_param(mode) == NULL) 1272 return 1; 1273 } else 1274 #endif /* VGA_NO_MODE_CHANGE */ 1275 { 1276 /* 1277 * Even if we don't support video mode switching on this adapter, 1278 * the information on the initial (thus current) video mode 1279 * should be made available. 1280 */ 1281 if (mode != adp->va_initial_mode) 1282 return 1; 1283 } 1284 1285 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1286 if (bios_vmode[i].vi_mode == NA) 1287 continue; 1288 if (mode == bios_vmode[i].vi_mode) { 1289 *info = bios_vmode[i]; 1290 return 0; 1291 } 1292 } 1293 return 1; 1294 } 1295 1296 /* 1297 * query_mode(): 1298 * Find a video mode matching the requested parameters. 1299 * Fields filled with 0 are considered "don't care" fields and 1300 * match any modes. 1301 * 1302 * all adapters 1303 */ 1304 static int 1305 vga_query_mode(video_adapter_t *adp, video_info_t *info) 1306 { 1307 int i; 1308 1309 if (!init_done) 1310 return ENXIO; 1311 1312 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1313 if (bios_vmode[i].vi_mode == NA) 1314 continue; 1315 1316 if ((info->vi_width != 0) 1317 && (info->vi_width != bios_vmode[i].vi_width)) 1318 continue; 1319 if ((info->vi_height != 0) 1320 && (info->vi_height != bios_vmode[i].vi_height)) 1321 continue; 1322 if ((info->vi_cwidth != 0) 1323 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1324 continue; 1325 if ((info->vi_cheight != 0) 1326 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1327 continue; 1328 if ((info->vi_depth != 0) 1329 && (info->vi_depth != bios_vmode[i].vi_depth)) 1330 continue; 1331 if ((info->vi_planes != 0) 1332 && (info->vi_planes != bios_vmode[i].vi_planes)) 1333 continue; 1334 /* XXX: should check pixel format, memory model */ 1335 if ((info->vi_flags != 0) 1336 && (info->vi_flags != bios_vmode[i].vi_flags)) 1337 continue; 1338 1339 /* verify if this mode is supported on this adapter */ 1340 if (vga_get_info(adp, bios_vmode[i].vi_mode, info)) 1341 continue; 1342 return 0; 1343 } 1344 return ENODEV; 1345 } 1346 1347 /* 1348 * set_mode(): 1349 * Change the video mode. 1350 * 1351 * EGA/VGA 1352 */ 1353 static int 1354 vga_set_mode(video_adapter_t *adp, int mode) 1355 { 1356 #ifndef VGA_NO_MODE_CHANGE 1357 video_info_t info; 1358 adp_state_t params; 1359 1360 prologue(adp, V_ADP_MODECHANGE, 1); 1361 1362 mode = map_gen_mode_num(adp->va_type, 1363 adp->va_flags & V_ADP_COLOR, mode); 1364 if (vga_get_info(adp, mode, &info)) 1365 return 1; 1366 params.sig = V_STATE_SIG; 1367 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1368 1369 switch (mode) { 1370 case M_VGA_C80x60: case M_VGA_M80x60: 1371 params.regs[2] = 0x08; 1372 params.regs[19] = 0x47; 1373 goto special_480l; 1374 1375 case M_VGA_C80x30: case M_VGA_M80x30: 1376 params.regs[19] = 0x4f; 1377 special_480l: 1378 params.regs[9] |= 0xc0; 1379 params.regs[16] = 0x08; 1380 params.regs[17] = 0x3e; 1381 params.regs[26] = 0xea; 1382 params.regs[28] = 0xdf; 1383 params.regs[31] = 0xe7; 1384 params.regs[32] = 0x04; 1385 goto setup_mode; 1386 1387 case M_ENH_C80x43: case M_ENH_B80x43: 1388 params.regs[28] = 87; 1389 goto special_80x50; 1390 1391 case M_VGA_C80x50: case M_VGA_M80x50: 1392 special_80x50: 1393 params.regs[2] = 8; 1394 params.regs[19] = 7; 1395 goto setup_mode; 1396 1397 case M_VGA_C40x25: case M_VGA_C80x25: 1398 case M_VGA_M80x25: 1399 case M_B40x25: case M_C40x25: 1400 case M_B80x25: case M_C80x25: 1401 case M_ENH_B40x25: case M_ENH_C40x25: 1402 case M_ENH_B80x25: case M_ENH_C80x25: 1403 case M_EGAMONO80x25: 1404 1405 setup_mode: 1406 vga_load_state(adp, ¶ms); 1407 break; 1408 1409 case M_VGA_MODEX: 1410 /* "unchain" the VGA mode */ 1411 params.regs[5-1+0x04] &= 0xf7; 1412 params.regs[5-1+0x04] |= 0x04; 1413 /* turn off doubleword mode */ 1414 params.regs[10+0x14] &= 0xbf; 1415 /* turn off word adressing */ 1416 params.regs[10+0x17] |= 0x40; 1417 /* set logical screen width */ 1418 params.regs[10+0x13] = 80; 1419 /* set 240 lines */ 1420 params.regs[10+0x11] = 0x2c; 1421 params.regs[10+0x06] = 0x0d; 1422 params.regs[10+0x07] = 0x3e; 1423 params.regs[10+0x10] = 0xea; 1424 params.regs[10+0x11] = 0xac; 1425 params.regs[10+0x12] = 0xdf; 1426 params.regs[10+0x15] = 0xe7; 1427 params.regs[10+0x16] = 0x06; 1428 /* set vertical sync polarity to reflect aspect ratio */ 1429 params.regs[9] = 0xe3; 1430 goto setup_grmode; 1431 1432 case M_BG320: case M_CG320: case M_BG640: 1433 case M_CG320_D: case M_CG640_E: 1434 case M_CG640x350: case M_ENH_CG640: 1435 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1436 1437 setup_grmode: 1438 vga_load_state(adp, ¶ms); 1439 break; 1440 1441 default: 1442 return 1; 1443 } 1444 1445 adp->va_mode = mode; 1446 update_adapter_info(adp, &info); 1447 1448 /* move hardware cursor out of the way */ 1449 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1450 1451 return 0; 1452 #else /* VGA_NO_MODE_CHANGE */ 1453 return 1; 1454 #endif /* VGA_NO_MODE_CHANGE */ 1455 } 1456 1457 #ifndef VGA_NO_FONT_LOADING 1458 1459 static void 1460 set_font_mode(video_adapter_t *adp, u_char *buf) 1461 { 1462 u_char *mp; 1463 int s; 1464 1465 s = splhigh(); 1466 1467 /* save register values */ 1468 if (adp->va_type == KD_VGA) { 1469 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1470 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1471 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1472 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1473 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1474 inb(adp->va_crtc_addr + 6); 1475 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1476 } else /* if (adp->va_type == KD_EGA) */ { 1477 /* 1478 * EGA cannot be read; copy parameters from the mode parameter 1479 * table. 1480 */ 1481 mp = get_mode_param(adp->va_mode); 1482 buf[0] = mp[5 + 0x02 - 1]; 1483 buf[1] = mp[5 + 0x04 - 1]; 1484 buf[2] = mp[55 + 0x04]; 1485 buf[3] = mp[55 + 0x05]; 1486 buf[4] = mp[55 + 0x06]; 1487 buf[5] = mp[35 + 0x10]; 1488 } 1489 1490 /* setup vga for loading fonts */ 1491 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1492 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1493 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1494 outb(ATC, 0x20); /* enable palette */ 1495 1496 #if VGA_SLOW_IOACCESS 1497 #ifdef VGA_ALT_SEQACCESS 1498 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1499 #endif 1500 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1501 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1502 #ifdef VGA_ALT_SEQACCESS 1503 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1504 #endif 1505 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1506 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1507 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1508 #else /* VGA_SLOW_IOACCESS */ 1509 #ifdef VGA_ALT_SEQACCESS 1510 outw(TSIDX, 0x0100); 1511 #endif 1512 outw(TSIDX, 0x0402); 1513 outw(TSIDX, 0x0704); 1514 #ifdef VGA_ALT_SEQACCESS 1515 outw(TSIDX, 0x0300); 1516 #endif 1517 outw(GDCIDX, 0x0204); 1518 outw(GDCIDX, 0x0005); 1519 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1520 #endif /* VGA_SLOW_IOACCESS */ 1521 1522 splx(s); 1523 } 1524 1525 static void 1526 set_normal_mode(video_adapter_t *adp, u_char *buf) 1527 { 1528 int s; 1529 1530 s = splhigh(); 1531 1532 /* setup vga for normal operation mode again */ 1533 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1534 outb(ATC, 0x10); outb(ATC, buf[5]); 1535 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1536 outb(ATC, 0x20); /* enable palette */ 1537 1538 #if VGA_SLOW_IOACCESS 1539 #ifdef VGA_ALT_SEQACCESS 1540 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1541 #endif 1542 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1543 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1544 #ifdef VGA_ALT_SEQACCESS 1545 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1546 #endif 1547 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1548 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1549 if (adp->va_crtc_addr == MONO_CRTC) { 1550 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1551 } else { 1552 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1553 } 1554 #else /* VGA_SLOW_IOACCESS */ 1555 #ifdef VGA_ALT_SEQACCESS 1556 outw(TSIDX, 0x0100); 1557 #endif 1558 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1559 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1560 #ifdef VGA_ALT_SEQACCESS 1561 outw(TSIDX, 0x0300); 1562 #endif 1563 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1564 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1565 if (adp->va_crtc_addr == MONO_CRTC) 1566 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1567 else 1568 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1569 #endif /* VGA_SLOW_IOACCESS */ 1570 1571 splx(s); 1572 } 1573 1574 #endif /* VGA_NO_FONT_LOADING */ 1575 1576 /* 1577 * save_font(): 1578 * Read the font data in the requested font page from the video adapter. 1579 * 1580 * EGA/VGA 1581 */ 1582 static int 1583 vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1584 int ch, int count) 1585 { 1586 #ifndef VGA_NO_FONT_LOADING 1587 u_char buf[PARAM_BUFSIZE]; 1588 u_int32_t segment; 1589 int c; 1590 #ifdef VGA_ALT_SEQACCESS 1591 int s; 1592 u_char val = 0; 1593 #endif 1594 1595 prologue(adp, V_ADP_FONT, 1); 1596 1597 if (fontsize < 14) { 1598 /* FONT_8 */ 1599 fontsize = 8; 1600 } else if (fontsize >= 32) { 1601 fontsize = 32; 1602 } else if (fontsize >= 16) { 1603 /* FONT_16 */ 1604 fontsize = 16; 1605 } else { 1606 /* FONT_14 */ 1607 fontsize = 14; 1608 } 1609 1610 if (page < 0 || page >= 8) 1611 return 1; 1612 segment = FONT_BUF + 0x4000*page; 1613 if (page > 3) 1614 segment -= 0xe000; 1615 1616 #ifdef VGA_ALT_SEQACCESS 1617 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1618 s = splhigh(); 1619 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1620 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1621 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1622 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1623 splx(s); 1624 } 1625 #endif 1626 1627 set_font_mode(adp, buf); 1628 if (fontsize == 32) { 1629 bcopy_fromio((void *)(segment + ch*32), data, fontsize*count); 1630 } else { 1631 for (c = ch; count > 0; ++c, --count) { 1632 bcopy_fromio((void *)(segment + c*32), data, fontsize); 1633 data += fontsize; 1634 } 1635 } 1636 set_normal_mode(adp, buf); 1637 1638 #ifdef VGA_ALT_SEQACCESS 1639 if (adp->va_type == KD_VGA) { 1640 s = splhigh(); 1641 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1642 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1643 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1644 splx(s); 1645 } 1646 #endif 1647 1648 return 0; 1649 #else /* VGA_NO_FONT_LOADING */ 1650 return 1; 1651 #endif /* VGA_NO_FONT_LOADING */ 1652 } 1653 1654 /* 1655 * load_font(): 1656 * Set the font data in the requested font page. 1657 * NOTE: it appears that some recent video adapters do not support 1658 * the font page other than 0... XXX 1659 * 1660 * EGA/VGA 1661 */ 1662 static int 1663 vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1664 int ch, int count) 1665 { 1666 #ifndef VGA_NO_FONT_LOADING 1667 u_char buf[PARAM_BUFSIZE]; 1668 u_int32_t segment; 1669 int c; 1670 #ifdef VGA_ALT_SEQACCESS 1671 int s; 1672 u_char val = 0; 1673 #endif 1674 1675 prologue(adp, V_ADP_FONT, 1); 1676 1677 if (fontsize < 14) { 1678 /* FONT_8 */ 1679 fontsize = 8; 1680 } else if (fontsize >= 32) { 1681 fontsize = 32; 1682 } else if (fontsize >= 16) { 1683 /* FONT_16 */ 1684 fontsize = 16; 1685 } else { 1686 /* FONT_14 */ 1687 fontsize = 14; 1688 } 1689 1690 if (page < 0 || page >= 8) 1691 return 1; 1692 segment = FONT_BUF + 0x4000*page; 1693 if (page > 3) 1694 segment -= 0xe000; 1695 1696 #ifdef VGA_ALT_SEQACCESS 1697 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1698 s = splhigh(); 1699 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1700 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1701 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1702 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1703 splx(s); 1704 } 1705 #endif 1706 1707 set_font_mode(adp, buf); 1708 if (fontsize == 32) { 1709 bcopy_toio(data, (void *)(segment + ch*32), fontsize*count); 1710 } else { 1711 for (c = ch; count > 0; ++c, --count) { 1712 bcopy_toio(data, (void *)(segment + c*32), fontsize); 1713 data += fontsize; 1714 } 1715 } 1716 set_normal_mode(adp, buf); 1717 1718 #ifdef VGA_ALT_SEQACCESS 1719 if (adp->va_type == KD_VGA) { 1720 s = splhigh(); 1721 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1722 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1723 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1724 splx(s); 1725 } 1726 #endif 1727 1728 return 0; 1729 #else /* VGA_NO_FONT_LOADING */ 1730 return 1; 1731 #endif /* VGA_NO_FONT_LOADING */ 1732 } 1733 1734 /* 1735 * show_font(): 1736 * Activate the requested font page. 1737 * NOTE: it appears that some recent video adapters do not support 1738 * the font page other than 0... XXX 1739 * 1740 * EGA/VGA 1741 */ 1742 static int 1743 vga_show_font(video_adapter_t *adp, int page) 1744 { 1745 #ifndef VGA_NO_FONT_LOADING 1746 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1747 int s; 1748 1749 prologue(adp, V_ADP_FONT, 1); 1750 if (page < 0 || page >= 8) 1751 return 1; 1752 1753 s = splhigh(); 1754 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1755 splx(s); 1756 1757 return 0; 1758 #else /* VGA_NO_FONT_LOADING */ 1759 return 1; 1760 #endif /* VGA_NO_FONT_LOADING */ 1761 } 1762 1763 /* 1764 * save_palette(): 1765 * Read DAC values. The values have expressed in 8 bits. 1766 * 1767 * VGA 1768 */ 1769 static int 1770 vga_save_palette(video_adapter_t *adp, u_char *palette) 1771 { 1772 int i; 1773 1774 prologue(adp, V_ADP_PALETTE, 1); 1775 1776 /* 1777 * We store 8 bit values in the palette buffer, while the standard 1778 * VGA has 6 bit DAC . 1779 */ 1780 outb(PALRADR, 0x00); 1781 for (i = 0; i < 256*3; ++i) 1782 palette[i] = inb(PALDATA) << 2; 1783 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1784 return 0; 1785 } 1786 1787 /* 1788 * load_palette(): 1789 * Set DAC values. 1790 * 1791 * VGA 1792 */ 1793 static int 1794 vga_load_palette(video_adapter_t *adp, u_char *palette) 1795 { 1796 int i; 1797 1798 prologue(adp, V_ADP_PALETTE, 1); 1799 1800 outb(PIXMASK, 0xff); /* no pixelmask */ 1801 outb(PALWADR, 0x00); 1802 for (i = 0; i < 256*3; ++i) 1803 outb(PALDATA, palette[i] >> 2); 1804 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1805 outb(ATC, 0x20); /* enable palette */ 1806 return 0; 1807 } 1808 1809 /* 1810 * set_border(): 1811 * Change the border color. 1812 * 1813 * CGA/EGA/VGA 1814 */ 1815 static int 1816 vga_set_border(video_adapter_t *adp, int color) 1817 { 1818 prologue(adp, V_ADP_BORDER, 1); 1819 1820 switch (adp->va_type) { 1821 case KD_EGA: 1822 case KD_VGA: 1823 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1824 outb(ATC, 0x31); outb(ATC, color & 0xff); 1825 break; 1826 case KD_CGA: 1827 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 1828 break; 1829 case KD_MONO: 1830 case KD_HERCULES: 1831 default: 1832 break; 1833 } 1834 return 0; 1835 } 1836 1837 /* 1838 * save_state(): 1839 * Read video register values. 1840 * NOTE: this function only reads the standard EGA/VGA registers. 1841 * any extra/extended registers of SVGA adapters are not saved. 1842 * 1843 * VGA 1844 */ 1845 static int 1846 vga_save_state(video_adapter_t *adp, void *p, size_t size) 1847 { 1848 video_info_t info; 1849 u_char *buf; 1850 int crtc_addr; 1851 int i, j; 1852 int s; 1853 1854 if (size == 0) { 1855 /* return the required buffer size */ 1856 prologue(adp, V_ADP_STATESAVE, 0); 1857 return sizeof(adp_state_t); 1858 } else { 1859 prologue(adp, V_ADP_STATESAVE, 1); 1860 if (size < sizeof(adp_state_t)) 1861 return 1; 1862 } 1863 1864 ((adp_state_t *)p)->sig = V_STATE_SIG; 1865 buf = ((adp_state_t *)p)->regs; 1866 bzero(buf, V_MODE_PARAM_SIZE); 1867 crtc_addr = adp->va_crtc_addr; 1868 1869 s = splhigh(); 1870 1871 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1872 for (i = 0, j = 5; i < 4; i++) { 1873 outb(TSIDX, i + 1); 1874 buf[j++] = inb(TSREG); 1875 } 1876 buf[9] = inb(MISC + 10); /* dot-clock */ 1877 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1878 1879 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 1880 outb(crtc_addr, i); 1881 buf[j++] = inb(crtc_addr + 1); 1882 } 1883 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 1884 inb(crtc_addr + 6); /* reset flip-flop */ 1885 outb(ATC, i); 1886 buf[j++] = inb(ATC + 1); 1887 } 1888 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 1889 outb(GDCIDX, i); 1890 buf[j++] = inb(GDCREG); 1891 } 1892 inb(crtc_addr + 6); /* reset flip-flop */ 1893 outb(ATC, 0x20); /* enable palette */ 1894 1895 splx(s); 1896 1897 #if 1 1898 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 1899 if (info.vi_flags & V_INFO_GRAPHICS) { 1900 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 1901 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 1902 } else { 1903 buf[0] = info.vi_width; /* COLS */ 1904 buf[1] = info.vi_height - 1; /* ROWS */ 1905 } 1906 buf[2] = info.vi_cheight; /* POINTS */ 1907 } else { 1908 /* XXX: shouldn't be happening... */ 1909 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 1910 adp->va_unit, adp->va_name); 1911 } 1912 #else 1913 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 1914 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 1915 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 1916 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 1917 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 1918 #endif 1919 1920 return 0; 1921 } 1922 1923 /* 1924 * load_state(): 1925 * Set video registers at once. 1926 * NOTE: this function only updates the standard EGA/VGA registers. 1927 * any extra/extended registers of SVGA adapters are not changed. 1928 * 1929 * EGA/VGA 1930 */ 1931 static int 1932 vga_load_state(video_adapter_t *adp, void *p) 1933 { 1934 u_char *buf; 1935 int crtc_addr; 1936 int s; 1937 int i; 1938 1939 prologue(adp, V_ADP_STATELOAD, 1); 1940 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1941 return 1; 1942 1943 buf = ((adp_state_t *)p)->regs; 1944 crtc_addr = adp->va_crtc_addr; 1945 1946 s = splhigh(); 1947 1948 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1949 for (i = 0; i < 4; ++i) { /* program sequencer */ 1950 outb(TSIDX, i + 1); 1951 outb(TSREG, buf[i + 5]); 1952 } 1953 outb(MISC, buf[9]); /* set dot-clock */ 1954 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1955 outb(crtc_addr, 0x11); 1956 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 1957 for (i = 0; i < 25; ++i) { /* program crtc */ 1958 outb(crtc_addr, i); 1959 outb(crtc_addr + 1, buf[i + 10]); 1960 } 1961 inb(crtc_addr+6); /* reset flip-flop */ 1962 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 1963 outb(ATC, i); 1964 outb(ATC, buf[i + 35]); 1965 } 1966 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 1967 outb(GDCIDX, i); 1968 outb(GDCREG, buf[i + 55]); 1969 } 1970 inb(crtc_addr + 6); /* reset flip-flop */ 1971 outb(ATC, 0x20); /* enable palette */ 1972 1973 #if notyet /* a temporary workaround for kernel panic, XXX */ 1974 #ifndef VGA_NO_BIOS 1975 if (adp->va_unit == V_ADP_PRIMARY) { 1976 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 1977 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 1978 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 1979 #if 0 1980 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 1981 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 1982 #endif 1983 } 1984 #endif /* VGA_NO_BIOS */ 1985 #endif /* notyet */ 1986 1987 splx(s); 1988 return 0; 1989 } 1990 1991 /* 1992 * set_origin(): 1993 * Change the origin (window mapping) of the banked frame buffer. 1994 */ 1995 static int 1996 vga_set_origin(video_adapter_t *adp, off_t offset) 1997 { 1998 /* 1999 * The standard video modes do not require window mapping; 2000 * always return error. 2001 */ 2002 return 1; 2003 } 2004 2005 /* 2006 * read_hw_cursor(): 2007 * Read the position of the hardware text cursor. 2008 * 2009 * all adapters 2010 */ 2011 static int 2012 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 2013 { 2014 u_int16_t off; 2015 int s; 2016 2017 if (!init_done) 2018 return 1; 2019 2020 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2021 return 1; 2022 2023 s = spltty(); 2024 outb(adp->va_crtc_addr, 14); 2025 off = inb(adp->va_crtc_addr + 1); 2026 outb(adp->va_crtc_addr, 15); 2027 off = (off << 8) | inb(adp->va_crtc_addr + 1); 2028 splx(s); 2029 2030 *row = off / adp->va_info.vi_width; 2031 *col = off % adp->va_info.vi_width; 2032 2033 return 0; 2034 } 2035 2036 /* 2037 * set_hw_cursor(): 2038 * Move the hardware text cursor. If col and row are both -1, 2039 * the cursor won't be shown. 2040 * 2041 * all adapters 2042 */ 2043 static int 2044 vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 2045 { 2046 u_int16_t off; 2047 int s; 2048 2049 if (!init_done) 2050 return 1; 2051 2052 if ((col == -1) && (row == -1)) { 2053 off = -1; 2054 } else { 2055 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2056 return 1; 2057 off = row*adp->va_info.vi_width + col; 2058 } 2059 2060 s = spltty(); 2061 outb(adp->va_crtc_addr, 14); 2062 outb(adp->va_crtc_addr + 1, off >> 8); 2063 outb(adp->va_crtc_addr, 15); 2064 outb(adp->va_crtc_addr + 1, off & 0x00ff); 2065 splx(s); 2066 2067 return 0; 2068 } 2069 2070 /* 2071 * set_hw_cursor_shape(): 2072 * Change the shape of the hardware text cursor. If the height is 2073 * zero or negative, the cursor won't be shown. 2074 * 2075 * all adapters 2076 */ 2077 static int 2078 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 2079 int celsize, int blink) 2080 { 2081 int s; 2082 2083 if (!init_done) 2084 return 1; 2085 2086 s = spltty(); 2087 switch (adp->va_type) { 2088 case KD_VGA: 2089 case KD_CGA: 2090 case KD_MONO: 2091 case KD_HERCULES: 2092 default: 2093 if (height <= 0) { 2094 /* make the cursor invisible */ 2095 outb(adp->va_crtc_addr, 10); 2096 outb(adp->va_crtc_addr + 1, 32); 2097 outb(adp->va_crtc_addr, 11); 2098 outb(adp->va_crtc_addr + 1, 0); 2099 } else { 2100 outb(adp->va_crtc_addr, 10); 2101 outb(adp->va_crtc_addr + 1, celsize - base - height); 2102 outb(adp->va_crtc_addr, 11); 2103 outb(adp->va_crtc_addr + 1, celsize - base - 1); 2104 } 2105 break; 2106 case KD_EGA: 2107 if (height <= 0) { 2108 /* make the cursor invisible */ 2109 outb(adp->va_crtc_addr, 10); 2110 outb(adp->va_crtc_addr + 1, celsize); 2111 outb(adp->va_crtc_addr, 11); 2112 outb(adp->va_crtc_addr + 1, 0); 2113 } else { 2114 outb(adp->va_crtc_addr, 10); 2115 outb(adp->va_crtc_addr + 1, celsize - base - height); 2116 outb(adp->va_crtc_addr, 11); 2117 outb(adp->va_crtc_addr + 1, celsize - base); 2118 } 2119 break; 2120 } 2121 splx(s); 2122 2123 return 0; 2124 } 2125 2126 /* 2127 * mmap(): 2128 * Mmap frame buffer. 2129 * 2130 * all adapters 2131 */ 2132 static int 2133 vga_mmap(video_adapter_t *adp, vm_offset_t offset) 2134 { 2135 if (offset > 0x20000 - PAGE_SIZE) 2136 return -1; 2137 #ifdef __i386__ 2138 return i386_btop((VIDEO_BUF_BASE + offset)); 2139 #endif 2140 #ifdef __alpha__ 2141 return alpha_btop((VIDEO_BUF_BASE + offset)); 2142 #endif 2143 } 2144 2145 static void 2146 dump_buffer(u_char *buf, size_t len) 2147 { 2148 int i; 2149 2150 for(i = 0; i < len;) { 2151 printf("%02x ", buf[i]); 2152 if ((++i % 16) == 0) 2153 printf("\n"); 2154 } 2155 } 2156 2157 /* 2158 * diag(): 2159 * Print some information about the video adapter and video modes, 2160 * with requested level of details. 2161 * 2162 * all adapters 2163 */ 2164 static int 2165 vga_diag(video_adapter_t *adp, int level) 2166 { 2167 #if FB_DEBUG > 1 2168 video_info_t info; 2169 #endif 2170 u_char *mp; 2171 2172 if (!init_done) 2173 return 1; 2174 2175 #if FB_DEBUG > 1 2176 #ifndef VGA_NO_BIOS 2177 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", 2178 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); 2179 printf("vga: CRTC:0x%x, video option:0x%02x, ", 2180 readw(BIOS_PADDRTOVADDR(0x463)), 2181 readb(BIOS_PADDRTOVADDR(0x487))); 2182 printf("rows:%d, cols:%d, font height:%d\n", 2183 readb(BIOS_PADDRTOVADDR(0x44a)), 2184 readb(BIOS_PADDRTOVADDR(0x484)) + 1, 2185 readb(BIOS_PADDRTOVADDR(0x485))); 2186 #endif /* VGA_NO_BIOS */ 2187 printf("vga: param table EGA/VGA:%p", video_mode_ptr); 2188 printf(", CGA/MDA:%p\n", video_mode_ptr2); 2189 printf("vga: rows_offset:%d\n", rows_offset); 2190 #endif /* FB_DEBUG > 1 */ 2191 2192 fb_dump_adp_info(DRIVER_NAME, adp, level); 2193 2194 #if FB_DEBUG > 1 2195 if (adp->va_flags & V_ADP_MODECHANGE) { 2196 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 2197 if (bios_vmode[i].vi_mode == NA) 2198 continue; 2199 if (get_mode_param(bios_vmode[i].vi_mode) == NULL) 2200 continue; 2201 fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level); 2202 } 2203 } else { 2204 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ 2205 fb_dump_mode_info(DRIVER_NAME, adp, &info, level); 2206 } 2207 #endif /* FB_DEBUG > 1 */ 2208 2209 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) 2210 return 0; 2211 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2212 if (video_mode_ptr == NULL) 2213 printf("vga%d: %s: WARNING: video mode switching is not " 2214 "fully supported on this adapter\n", 2215 adp->va_unit, adp->va_name); 2216 #endif 2217 if (level <= 0) 2218 return 0; 2219 2220 if (adp->va_type == KD_VGA) { 2221 printf("VGA parameters upon power-up\n"); 2222 dump_buffer(adpstate.regs, sizeof(adpstate.regs)); 2223 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); 2224 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); 2225 } 2226 2227 mp = get_mode_param(adp->va_initial_mode); 2228 if (mp == NULL) /* this shouldn't be happening */ 2229 return 0; 2230 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); 2231 dump_buffer(mp, V_MODE_PARAM_SIZE); 2232 2233 return 0; 2234 } 2235 2236 #endif /* NVGA > 0 */
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