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