vga_isa.c revision 43664
1/*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * Copyright (c) 1992-1998 S�ren Schmidt 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer as 11 * the first lines of this file unmodified. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $Id: vga_isa.c,v 1.1 1999/01/23 16:53:30 dfr Exp $ 30 */ 31 32#include "vga.h" 33#include "opt_vga.h" 34#include "opt_fb.h" 35#include "opt_syscons.h" /* should be removed in the future, XXX */ 36 37#if NVGA > 0 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> 42#include <sys/bus.h> 43#include <sys/malloc.h> 44 45#include <vm/vm.h> 46#include <vm/pmap.h> 47 48#include <machine/console.h> 49#include <machine/md_var.h> 50#include <machine/pc/bios.h> 51 52#include <dev/fb/fbreg.h> 53#include <dev/fb/vgareg.h> 54 55#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 70typedef 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 79devclass_t isavga_devclass; 80 81static int isavga_probe(device_t dev); 82static int isavga_attach(device_t dev); 83 84static device_method_t isavga_methods[] = { 85 DEVMETHOD(device_probe, isavga_probe), 86 DEVMETHOD(device_attach, isavga_attach), 87 { 0, 0 } 88}; 89 90static driver_t isavga_driver = { 91 DRIVER_NAME, 92 isavga_methods, 93 DRIVER_TYPE_TTY, 94 sizeof(isavga_softc_t), 95}; 96 97DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0); 98 99#else /* __i386__ */ 100 101#define ISAVGA_SOFTC(unit) (isavga_softc[unit]) 102 103static isavga_softc_t *isavga_softc[NVGA]; 104 105static int isavga_probe(struct isa_device *dev); 106static int isavga_attach(struct isa_device *dev); 107 108struct isa_driver vgadriver = { 109 isavga_probe, 110 isavga_attach, 111 DRIVER_NAME, 112 0, 113}; 114 115#endif /* __i386__ */ 116 117static int isavga_probe_unit(int unit, isavga_softc_t *sc, 118 int flags); 119static int isavga_attach_unit(int unit, isavga_softc_t *sc, 120 int flags); 121 122#ifdef FB_INSTALL_CDEV 123 124static d_open_t isavgaopen; 125static d_close_t isavgaclose; 126static d_read_t isavgaread; 127static d_ioctl_t isavgaioctl; 128 129static 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 140static int 141isavga_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 150static int 151isavga_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 161static int 162isavga_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 188static int 189isavga_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 204static int 205isavga_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 216static int 217isavga_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 */ 279struct adp_state { 280 int sig; 281#define V_STATE_SIG 0x736f6962 282 u_char regs[V_MODE_PARAM_SIZE]; 283}; 284typedef 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 */ 299static 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 326static video_adapter_t biosadapter[2]; 327static int biosadapters = 0; 328 329/* video driver declarations */ 330static int vga_configure(int flags); 331 int (*vga_sub_configure)(int flags); 332static int vga_nop(void); 333static vi_probe_t vga_probe; 334static vi_init_t vga_init; 335static vi_get_info_t vga_get_info; 336static vi_query_mode_t vga_query_mode; 337static vi_set_mode_t vga_set_mode; 338static vi_save_font_t vga_save_font; 339static vi_load_font_t vga_load_font; 340static vi_show_font_t vga_show_font; 341static vi_save_palette_t vga_save_palette; 342static vi_load_palette_t vga_load_palette; 343static vi_set_border_t vga_set_border; 344static vi_save_state_t vga_save_state; 345static vi_load_state_t vga_load_state; 346static vi_set_win_org_t vga_set_origin; 347static vi_read_hw_cursor_t vga_read_hw_cursor; 348static vi_set_hw_cursor_t vga_set_hw_cursor; 349static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape; 350static vi_mmap_t vga_mmap; 351static vi_diag_t vga_diag; 352 353static 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 376VIDEO_DRIVER(mda, vgavidsw, NULL); 377VIDEO_DRIVER(cga, vgavidsw, NULL); 378VIDEO_DRIVER(ega, vgavidsw, NULL); 379VIDEO_DRIVER(vga, vgavidsw, vga_configure); 380 381/* VGA BIOS standard video modes */ 382#define EOT (-1) 383#define NA (-2) 384 385static 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, 1, 461 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 462#endif /* VGA_NO_MODE_CHANGE */ 463 464 { EOT }, 465}; 466 467static int init_done = FALSE; 468static u_char *video_mode_ptr = NULL; /* EGA/VGA */ 469static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */ 470static u_char *mode_map[V_MODE_MAP_SIZE]; 471static adp_state_t adpstate; 472static adp_state_t adpstate2; 473static 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) 479static void map_mode_table(u_char *map[], u_char *table, int max); 480#endif 481static 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) 484static int map_mode_num(int mode); 485#endif 486static int map_gen_mode_num(int type, int color, int mode); 487static int map_bios_mode_num(int type, int color, int bios_mode); 488static u_char *get_mode_param(int mode); 489#ifndef VGA_NO_BIOS 490static void fill_adapter_param(int code, video_adapter_t *adp); 491#endif 492static int verify_adapter(video_adapter_t *adp); 493static 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 498static int comp_adpregs(u_char *buf1, u_char *buf2); 499#endif 500static int probe_adapters(void); 501 502#define PARAM_BUFSIZE 6 503static void set_font_mode(video_adapter_t *adp, u_char *buf); 504static void set_normal_mode(video_adapter_t *adp, u_char *buf); 505 506static 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 */ 517static int 518vga_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 */ 543static void 544map_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 555static void 556clear_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 */ 575static int 576map_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 */ 603static int 604map_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 */ 655static int 656map_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 */ 729static 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 743static void 744fill_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 774static int 775verify_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 836static void 837update_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_flags & V_INFO_GRAPHICS) 855 adp->va_line_width = info->vi_width/8; 856 else 857 adp->va_line_width = info->vi_width; 858 bcopy(info, &adp->va_info, sizeof(adp->va_info)); 859} 860 861#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 862/* compare two parameter table entries */ 863static int 864comp_adpregs(u_char *buf1, u_char *buf2) 865{ 866 static struct { 867 u_char mask; 868 } params[V_MODE_PARAM_SIZE] = { 869 0xff, 0x00, 0xff, /* COLS, ROWS, POINTS */ 870 0x00, 0x00, /* page length */ 871 0xfe, 0xff, 0xff, 0xff, /* sequencer registers */ 872 0xf3, /* misc register */ 873 0xff, 0xff, 0xff, 0x7f, 0xff, /* CRTC */ 874 0xff, 0xff, 0xff, 0x7f, 0xff, 875 0x00, 0x00, 0x00, 0x00, 0x00, 876 0x00, 0xff, 0x7f, 0xff, 0xff, 877 0x7f, 0xff, 0xff, 0xef, 0xff, 878 0xff, 0xff, 0xff, 0xff, 0xff, /* attribute controller registers */ 879 0xff, 0xff, 0xff, 0xff, 0xff, 880 0xff, 0xff, 0xff, 0xff, 0xff, 881 0xff, 0xff, 0xff, 0xff, 0xf0, 882 0xff, 0xff, 0xff, 0xff, 0xff, /* GDC register */ 883 0xff, 0xff, 0xff, 0xff, 884 }; 885 int identical = TRUE; 886 int i; 887 888 if ((buf1 == NULL) || (buf2 == NULL)) 889 return COMP_DIFFERENT; 890 891 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 892 if (params[i].mask == 0) /* don't care */ 893 continue; 894 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 895 return COMP_DIFFERENT; 896 if (buf1[i] != buf2[i]) 897 identical = FALSE; 898 } 899 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 900} 901#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 902 903/* probe video adapters and return the number of detected adapters */ 904static int 905probe_adapters(void) 906{ 907 video_adapter_t *adp; 908 video_info_t info; 909 int i; 910 911 /* do this test only once */ 912 if (init_done) 913 return biosadapters; 914 init_done = TRUE; 915 916 /* 917 * Locate display adapters. 918 * The AT architecture supports upto two adapters. `syscons' allows 919 * the following combinations of adapters: 920 * 1) MDA + CGA 921 * 2) MDA + EGA/VGA color 922 * 3) CGA + EGA/VGA mono 923 * Note that `syscons' doesn't bother with MCGA as it is only 924 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 925 * thus, they are not running FreeBSD! 926 * When there are two adapaters in the system, one becomes `primary' 927 * and the other `secondary'. The EGA adapter has a set of DIP 928 * switches on board for this information and the EGA BIOS copies 929 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 930 * The VGA BIOS has more sophisticated mechanism and has this 931 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 932 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 933 */ 934 935 /* 936 * Check rtc and BIOS data area. 937 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 938 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 939 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 940 * these bits in BIOSDATA_EQUIPMENT according to the monitor 941 * type detected. 942 */ 943#ifndef VGA_NO_BIOS 944 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 945 case 0: 946 /* EGA/VGA */ 947 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 948 biosadapter); 949 break; 950 case 1: 951 /* CGA 40x25 */ 952 /* FIXME: switch to the 80x25 mode? XXX */ 953 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 954 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 955 break; 956 case 2: 957 /* CGA 80x25 */ 958 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 959 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 960 break; 961 case 3: 962 /* MDA */ 963 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 964 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 965 break; 966 } 967#else 968 /* assume EGA/VGA? XXX */ 969 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 970 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 971#endif /* VGA_NO_BIOS */ 972 973 biosadapters = 0; 974 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 975 ++biosadapters; 976 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 977 biosadapter[V_ADP_SECONDARY].va_mode = 978 biosadapter[V_ADP_SECONDARY].va_initial_mode = 979 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 980 biosadapter[V_ADP_SECONDARY].va_flags 981 & V_ADP_COLOR, 982 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 983 } else { 984 biosadapter[V_ADP_SECONDARY].va_type = -1; 985 } 986 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 987 ++biosadapters; 988 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 989#ifndef VGA_NO_BIOS 990 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 991 readb(BIOS_PADDRTOVADDR(0x449)); 992#else 993 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 994#endif 995 biosadapter[V_ADP_PRIMARY].va_mode = 996 biosadapter[V_ADP_PRIMARY].va_initial_mode = 997 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 998 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 999 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 1000 } else { 1001 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 1002 biosadapter[V_ADP_SECONDARY].va_type = -1; 1003 } 1004 if (biosadapters == 0) 1005 return biosadapters; 1006 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 1007 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 1008 1009#if 0 /* we don't need these... */ 1010 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 1011 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 1012#endif 1013 1014#if 0 1015 /* 1016 * We cannot have two video adapter of the same type; there must be 1017 * only one of color or mono adapter, or one each of them. 1018 */ 1019 if (biosadapters > 1) { 1020 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 1021 & V_ADP_COLOR)) 1022 /* we have two mono or color adapters!! */ 1023 return (biosadapters = 0); 1024 } 1025#endif 1026 1027 /* 1028 * Ensure a zero start address. This is mainly to recover after 1029 * switching from pcvt using userconfig(). The registers are w/o 1030 * for old hardware so it's too hard to relocate the active screen 1031 * memory. 1032 * This must be done before vga_save_state() for VGA. 1033 */ 1034 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 1035 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1036 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 1037 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1038 1039 /* the video mode parameter table in EGA/VGA BIOS */ 1040 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 1041 * recognized by the video BIOS. 1042 */ 1043 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 1044 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 1045 adp = &biosadapter[V_ADP_PRIMARY]; 1046 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 1047 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 1048 adp = &biosadapter[V_ADP_SECONDARY]; 1049 } else { 1050 adp = NULL; 1051 } 1052 bzero(mode_map, sizeof(mode_map)); 1053 if (adp != NULL) { 1054 if (adp->va_type == KD_VGA) { 1055 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1056#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1057 mode_map[adp->va_initial_mode] = adpstate.regs; 1058 rows_offset = 1; 1059#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1060 if (video_mode_ptr == NULL) { 1061 mode_map[adp->va_initial_mode] = adpstate.regs; 1062 rows_offset = 1; 1063 } else { 1064 /* discard the table if we are not familiar with it... */ 1065 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1066 mp = get_mode_param(adp->va_initial_mode); 1067 if (mp != NULL) 1068 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1069 switch (comp_adpregs(adpstate.regs, mp)) { 1070 case COMP_IDENTICAL: 1071 /* 1072 * OK, this parameter table looks reasonably familiar 1073 * to us... 1074 */ 1075 /* 1076 * This is a kludge for Toshiba DynaBook SS433 1077 * whose BIOS video mode table entry has the actual # 1078 * of rows at the offset 1; BIOSes from other 1079 * manufacturers store the # of rows - 1 there. XXX 1080 */ 1081 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1082 break; 1083 1084 case COMP_SIMILAR: 1085 /* 1086 * Not exactly the same, but similar enough to be 1087 * trusted. However, use the saved register values 1088 * for the initial mode and other modes which are 1089 * based on the initial mode. 1090 */ 1091 mode_map[adp->va_initial_mode] = adpstate.regs; 1092 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1093 adpstate.regs[1] -= rows_offset - 1; 1094 break; 1095 1096 case COMP_DIFFERENT: 1097 default: 1098 /* 1099 * Don't use the paramter table in BIOS. It doesn't 1100 * look familiar to us. Video mode switching is allowed 1101 * only if the new mode is the same as or based on 1102 * the initial mode. 1103 */ 1104 video_mode_ptr = NULL; 1105 bzero(mode_map, sizeof(mode_map)); 1106 mode_map[adp->va_initial_mode] = adpstate.regs; 1107 rows_offset = 1; 1108 break; 1109 } 1110 } 1111#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1112 1113#ifndef VGA_NO_MODE_CHANGE 1114 adp->va_flags |= V_ADP_MODECHANGE; 1115#endif 1116#ifndef VGA_NO_FONT_LOADING 1117 adp->va_flags |= V_ADP_FONT; 1118#endif 1119 } else if (adp->va_type == KD_EGA) { 1120#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1121 rows_offset = 1; 1122#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1123 if (video_mode_ptr == NULL) { 1124 rows_offset = 1; 1125 } else { 1126 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1127 /* XXX how can one validate the EGA table... */ 1128 mp = get_mode_param(adp->va_initial_mode); 1129 if (mp != NULL) { 1130 adp->va_flags |= V_ADP_MODECHANGE; 1131#ifndef VGA_NO_FONT_LOADING 1132 adp->va_flags |= V_ADP_FONT; 1133#endif 1134 rows_offset = 1; 1135 } else { 1136 /* 1137 * This is serious. We will not be able to switch video 1138 * modes at all... 1139 */ 1140 video_mode_ptr = NULL; 1141 bzero(mode_map, sizeof(mode_map)); 1142 rows_offset = 1; 1143 } 1144 } 1145#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1146 } 1147 } 1148 1149 /* remove conflicting modes if we have more than one adapter */ 1150 if (biosadapters > 1) { 1151 for (i = 0; i < biosadapters; ++i) { 1152 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1153 continue; 1154 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1155 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1156 V_INFO_COLOR : 0); 1157 if ((biosadapter[i].va_type == KD_VGA) 1158 || (biosadapter[i].va_type == KD_EGA)) { 1159 biosadapter[i].va_io_base = 1160 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1161 IO_VGA : IO_MDA; 1162 biosadapter[i].va_io_size = 32; 1163 } 1164 } 1165 } 1166 1167 /* buffer address */ 1168 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1169 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1170 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); 1171 1172 if (biosadapters > 1) { 1173 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1174 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1175 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); 1176 } 1177 1178 /* 1179 * XXX: we should verify the following values for the primary adapter... 1180 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1181 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1182 * ? 0 : V_ADP_COLOR; 1183 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1184 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1185 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1186 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1187 */ 1188 1189 return biosadapters; 1190} 1191 1192/* entry points */ 1193 1194static int 1195vga_nop(void) 1196{ 1197 return 0; 1198} 1199 1200static int 1201vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1202{ 1203 probe_adapters(); 1204 if (unit >= biosadapters) 1205 return ENXIO; 1206 1207 *adpp = &biosadapter[unit]; 1208 1209 return 0; 1210} 1211 1212static int 1213vga_init(int unit, video_adapter_t *adp, int flags) 1214{ 1215 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1216 return ENXIO; 1217 1218 if (!init_done(adp)) { 1219 /* nothing to do really... */ 1220 adp->va_flags |= V_ADP_INITIALIZED; 1221 } 1222 1223 if (!config_done(adp)) { 1224 if (vid_register(adp) < 0) 1225 return ENXIO; 1226 adp->va_flags |= V_ADP_REGISTERED; 1227 } 1228 if (vga_sub_configure != NULL) 1229 (*vga_sub_configure)(0); 1230 1231 return 0; 1232} 1233 1234/* 1235 * get_info(): 1236 * Return the video_info structure of the requested video mode. 1237 * 1238 * all adapters 1239 */ 1240static int 1241vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1242{ 1243 int i; 1244 1245 if (!init_done) 1246 return 1; 1247 1248 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1249#ifndef VGA_NO_MODE_CHANGE 1250 if (adp->va_flags & V_ADP_MODECHANGE) { 1251 /* 1252 * If the parameter table entry for this mode is not found, 1253 * the mode is not supported... 1254 */ 1255 if (get_mode_param(mode) == NULL) 1256 return 1; 1257 } else 1258#endif /* VGA_NO_MODE_CHANGE */ 1259 { 1260 /* 1261 * Even if we don't support video mode switching on this adapter, 1262 * the information on the initial (thus current) video mode 1263 * should be made available. 1264 */ 1265 if (mode != adp->va_initial_mode) 1266 return 1; 1267 } 1268 1269 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1270 if (bios_vmode[i].vi_mode == NA) 1271 continue; 1272 if (mode == bios_vmode[i].vi_mode) { 1273 *info = bios_vmode[i]; 1274 return 0; 1275 } 1276 } 1277 return 1; 1278} 1279 1280/* 1281 * query_mode(): 1282 * Find a video mode matching the requested parameters. 1283 * Fields filled with 0 are considered "don't care" fields and 1284 * match any modes. 1285 * 1286 * all adapters 1287 */ 1288static int 1289vga_query_mode(video_adapter_t *adp, video_info_t *info) 1290{ 1291 video_info_t buf; 1292 int i; 1293 1294 if (!init_done) 1295 return -1; 1296 1297 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1298 if (bios_vmode[i].vi_mode == NA) 1299 continue; 1300 1301 if ((info->vi_width != 0) 1302 && (info->vi_width != bios_vmode[i].vi_width)) 1303 continue; 1304 if ((info->vi_height != 0) 1305 && (info->vi_height != bios_vmode[i].vi_height)) 1306 continue; 1307 if ((info->vi_cwidth != 0) 1308 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1309 continue; 1310 if ((info->vi_cheight != 0) 1311 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1312 continue; 1313 if ((info->vi_depth != 0) 1314 && (info->vi_depth != bios_vmode[i].vi_depth)) 1315 continue; 1316 if ((info->vi_planes != 0) 1317 && (info->vi_planes != bios_vmode[i].vi_planes)) 1318 continue; 1319 /* XXX: should check pixel format, memory model */ 1320 if ((info->vi_flags != 0) 1321 && (info->vi_flags != bios_vmode[i].vi_flags)) 1322 continue; 1323 1324 /* verify if this mode is supported on this adapter */ 1325 if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf)) 1326 continue; 1327 return bios_vmode[i].vi_mode; 1328 } 1329 return -1; 1330} 1331 1332/* 1333 * set_mode(): 1334 * Change the video mode. 1335 * 1336 * EGA/VGA 1337 */ 1338static int 1339vga_set_mode(video_adapter_t *adp, int mode) 1340{ 1341#ifndef VGA_NO_MODE_CHANGE 1342 video_info_t info; 1343 adp_state_t params; 1344 1345 prologue(adp, V_ADP_MODECHANGE, 1); 1346 1347 mode = map_gen_mode_num(adp->va_type, 1348 adp->va_flags & V_ADP_COLOR, mode); 1349 if (vga_get_info(adp, mode, &info)) 1350 return 1; 1351 params.sig = V_STATE_SIG; 1352 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1353 1354 switch (mode) { 1355 case M_VGA_C80x60: case M_VGA_M80x60: 1356 params.regs[2] = 0x08; 1357 params.regs[19] = 0x47; 1358 goto special_480l; 1359 1360 case M_VGA_C80x30: case M_VGA_M80x30: 1361 params.regs[19] = 0x4f; 1362special_480l: 1363 params.regs[9] |= 0xc0; 1364 params.regs[16] = 0x08; 1365 params.regs[17] = 0x3e; 1366 params.regs[26] = 0xea; 1367 params.regs[28] = 0xdf; 1368 params.regs[31] = 0xe7; 1369 params.regs[32] = 0x04; 1370 goto setup_mode; 1371 1372 case M_ENH_C80x43: case M_ENH_B80x43: 1373 params.regs[28] = 87; 1374 goto special_80x50; 1375 1376 case M_VGA_C80x50: case M_VGA_M80x50: 1377special_80x50: 1378 params.regs[2] = 8; 1379 params.regs[19] = 7; 1380 goto setup_mode; 1381 1382 case M_VGA_C40x25: case M_VGA_C80x25: 1383 case M_VGA_M80x25: 1384 case M_B40x25: case M_C40x25: 1385 case M_B80x25: case M_C80x25: 1386 case M_ENH_B40x25: case M_ENH_C40x25: 1387 case M_ENH_B80x25: case M_ENH_C80x25: 1388 case M_EGAMONO80x25: 1389 1390setup_mode: 1391 vga_load_state(adp, ¶ms); 1392 break; 1393 1394 case M_VGA_MODEX: 1395 /* "unchain" the VGA mode */ 1396 params.regs[5-1+0x04] &= 0xf7; 1397 params.regs[5-1+0x04] |= 0x04; 1398 /* turn off doubleword mode */ 1399 params.regs[10+0x14] &= 0xbf; 1400 /* turn off word adressing */ 1401 params.regs[10+0x17] |= 0x40; 1402 /* set logical screen width */ 1403 params.regs[10+0x13] = 80; 1404 /* set 240 lines */ 1405 params.regs[10+0x11] = 0x2c; 1406 params.regs[10+0x06] = 0x0d; 1407 params.regs[10+0x07] = 0x3e; 1408 params.regs[10+0x10] = 0xea; 1409 params.regs[10+0x11] = 0xac; 1410 params.regs[10+0x12] = 0xdf; 1411 params.regs[10+0x15] = 0xe7; 1412 params.regs[10+0x16] = 0x06; 1413 /* set vertical sync polarity to reflect aspect ratio */ 1414 params.regs[9] = 0xe3; 1415 goto setup_grmode; 1416 1417 case M_BG320: case M_CG320: case M_BG640: 1418 case M_CG320_D: case M_CG640_E: 1419 case M_CG640x350: case M_ENH_CG640: 1420 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1421 1422setup_grmode: 1423 vga_load_state(adp, ¶ms); 1424 break; 1425 1426 default: 1427 return 1; 1428 } 1429 1430 adp->va_mode = mode; 1431 update_adapter_info(adp, &info); 1432 1433 /* move hardware cursor out of the way */ 1434 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1435 1436 return 0; 1437#else /* VGA_NO_MODE_CHANGE */ 1438 return 1; 1439#endif /* VGA_NO_MODE_CHANGE */ 1440} 1441 1442#ifndef VGA_NO_FONT_LOADING 1443 1444static void 1445set_font_mode(video_adapter_t *adp, u_char *buf) 1446{ 1447 u_char *mp; 1448 int s; 1449 1450 s = splhigh(); 1451 1452 /* save register values */ 1453 if (adp->va_type == KD_VGA) { 1454 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1455 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1456 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1457 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1458 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1459 inb(adp->va_crtc_addr + 6); 1460 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1461 } else /* if (adp->va_type == KD_EGA) */ { 1462 /* 1463 * EGA cannot be read; copy parameters from the mode parameter 1464 * table. 1465 */ 1466 mp = get_mode_param(adp->va_mode); 1467 buf[0] = mp[5 + 0x02 - 1]; 1468 buf[1] = mp[5 + 0x04 - 1]; 1469 buf[2] = mp[55 + 0x04]; 1470 buf[3] = mp[55 + 0x05]; 1471 buf[4] = mp[55 + 0x06]; 1472 buf[5] = mp[35 + 0x10]; 1473 } 1474 1475 /* setup vga for loading fonts */ 1476 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1477 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1478 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1479 outb(ATC, 0x20); /* enable palette */ 1480 1481#if VGA_SLOW_IOACCESS 1482#ifdef VGA_ALT_SEQACCESS 1483 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1484#endif 1485 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1486 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1487#ifdef VGA_ALT_SEQACCESS 1488 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1489#endif 1490 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1491 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1492 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1493#else /* VGA_SLOW_IOACCESS */ 1494#ifdef VGA_ALT_SEQACCESS 1495 outw(TSIDX, 0x0100); 1496#endif 1497 outw(TSIDX, 0x0402); 1498 outw(TSIDX, 0x0704); 1499#ifdef VGA_ALT_SEQACCESS 1500 outw(TSIDX, 0x0300); 1501#endif 1502 outw(GDCIDX, 0x0204); 1503 outw(GDCIDX, 0x0005); 1504 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1505#endif /* VGA_SLOW_IOACCESS */ 1506 1507 splx(s); 1508} 1509 1510static void 1511set_normal_mode(video_adapter_t *adp, u_char *buf) 1512{ 1513 int s; 1514 1515 s = splhigh(); 1516 1517 /* setup vga for normal operation mode again */ 1518 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1519 outb(ATC, 0x10); outb(ATC, buf[5]); 1520 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1521 outb(ATC, 0x20); /* enable palette */ 1522 1523#if VGA_SLOW_IOACCESS 1524#ifdef VGA_ALT_SEQACCESS 1525 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1526#endif 1527 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1528 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1529#ifdef VGA_ALT_SEQACCESS 1530 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1531#endif 1532 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1533 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1534 if (adp->va_crtc_addr == MONO_CRTC) { 1535 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1536 } else { 1537 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1538 } 1539#else /* VGA_SLOW_IOACCESS */ 1540#ifdef VGA_ALT_SEQACCESS 1541 outw(TSIDX, 0x0100); 1542#endif 1543 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1544 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1545#ifdef VGA_ALT_SEQACCESS 1546 outw(TSIDX, 0x0300); 1547#endif 1548 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1549 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1550 if (adp->va_crtc_addr == MONO_CRTC) 1551 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1552 else 1553 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1554#endif /* VGA_SLOW_IOACCESS */ 1555 1556 splx(s); 1557} 1558 1559#endif /* VGA_NO_FONT_LOADING */ 1560 1561/* 1562 * save_font(): 1563 * Read the font data in the requested font page from the video adapter. 1564 * 1565 * EGA/VGA 1566 */ 1567static int 1568vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1569 int ch, int count) 1570{ 1571#ifndef VGA_NO_FONT_LOADING 1572 u_char buf[PARAM_BUFSIZE]; 1573 u_int32_t segment; 1574 int c; 1575#ifdef VGA_ALT_SEQACCESS 1576 int s; 1577 u_char val = 0; 1578#endif 1579 1580 prologue(adp, V_ADP_FONT, 1); 1581 1582 if (fontsize < 14) { 1583 /* FONT_8 */ 1584 fontsize = 8; 1585 } else if (fontsize >= 32) { 1586 fontsize = 32; 1587 } else if (fontsize >= 16) { 1588 /* FONT_16 */ 1589 fontsize = 16; 1590 } else { 1591 /* FONT_14 */ 1592 fontsize = 14; 1593 } 1594 1595 if (page < 0 || page >= 8) 1596 return 1; 1597 segment = FONT_BUF + 0x4000*page; 1598 if (page > 3) 1599 segment -= 0xe000; 1600 1601#ifdef VGA_ALT_SEQACCESS 1602 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1603 s = splhigh(); 1604 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1605 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1606 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1607 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1608 splx(s); 1609 } 1610#endif 1611 1612 set_font_mode(adp, buf); 1613 if (fontsize == 32) { 1614 bcopy_fromio(segment + ch*32, data, fontsize*count); 1615 } else { 1616 for (c = ch; count > 0; ++c, --count) { 1617 bcopy_fromio(segment + c*32, data, fontsize); 1618 data += fontsize; 1619 } 1620 } 1621 set_normal_mode(adp, buf); 1622 1623#ifdef VGA_ALT_SEQACCESS 1624 if (adp->va_type == KD_VGA) { 1625 s = splhigh(); 1626 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1627 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1628 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1629 splx(s); 1630 } 1631#endif 1632 1633 return 0; 1634#else /* VGA_NO_FONT_LOADING */ 1635 return 1; 1636#endif /* VGA_NO_FONT_LOADING */ 1637} 1638 1639/* 1640 * load_font(): 1641 * Set the font data in the requested font page. 1642 * NOTE: it appears that some recent video adapters do not support 1643 * the font page other than 0... XXX 1644 * 1645 * EGA/VGA 1646 */ 1647static int 1648vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1649 int ch, int count) 1650{ 1651#ifndef VGA_NO_FONT_LOADING 1652 u_char buf[PARAM_BUFSIZE]; 1653 u_int32_t segment; 1654 int c; 1655#ifdef VGA_ALT_SEQACCESS 1656 int s; 1657 u_char val = 0; 1658#endif 1659 1660 prologue(adp, V_ADP_FONT, 1); 1661 1662 if (fontsize < 14) { 1663 /* FONT_8 */ 1664 fontsize = 8; 1665 } else if (fontsize >= 32) { 1666 fontsize = 32; 1667 } else if (fontsize >= 16) { 1668 /* FONT_16 */ 1669 fontsize = 16; 1670 } else { 1671 /* FONT_14 */ 1672 fontsize = 14; 1673 } 1674 1675 if (page < 0 || page >= 8) 1676 return 1; 1677 segment = FONT_BUF + 0x4000*page; 1678 if (page > 3) 1679 segment -= 0xe000; 1680 1681#ifdef VGA_ALT_SEQACCESS 1682 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1683 s = splhigh(); 1684 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1685 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1686 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1687 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1688 splx(s); 1689 } 1690#endif 1691 1692 set_font_mode(adp, buf); 1693 if (fontsize == 32) { 1694 bcopy_toio(data, segment + ch*32, fontsize*count); 1695 } else { 1696 for (c = ch; count > 0; ++c, --count) { 1697 bcopy_toio(data, segment + c*32, fontsize); 1698 data += fontsize; 1699 } 1700 } 1701 set_normal_mode(adp, buf); 1702 1703#ifdef VGA_ALT_SEQACCESS 1704 if (adp->va_type == KD_VGA) { 1705 s = splhigh(); 1706 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1707 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1708 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1709 splx(s); 1710 } 1711#endif 1712 1713 return 0; 1714#else /* VGA_NO_FONT_LOADING */ 1715 return 1; 1716#endif /* VGA_NO_FONT_LOADING */ 1717} 1718 1719/* 1720 * show_font(): 1721 * Activate the requested font page. 1722 * NOTE: it appears that some recent video adapters do not support 1723 * the font page other than 0... XXX 1724 * 1725 * EGA/VGA 1726 */ 1727static int 1728vga_show_font(video_adapter_t *adp, int page) 1729{ 1730#ifndef VGA_NO_FONT_LOADING 1731 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1732 int s; 1733 1734 prologue(adp, V_ADP_FONT, 1); 1735 if (page < 0 || page >= 8) 1736 return 1; 1737 1738 s = splhigh(); 1739 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1740 splx(s); 1741 1742 return 0; 1743#else /* VGA_NO_FONT_LOADING */ 1744 return 1; 1745#endif /* VGA_NO_FONT_LOADING */ 1746} 1747 1748/* 1749 * save_palette(): 1750 * Read DAC values. The values have expressed in 8 bits. 1751 * 1752 * VGA 1753 */ 1754static int 1755vga_save_palette(video_adapter_t *adp, u_char *palette) 1756{ 1757 int i; 1758 1759 prologue(adp, V_ADP_PALETTE, 1); 1760 1761 /* 1762 * We store 8 bit values in the palette buffer, while the standard 1763 * VGA has 6 bit DAC . 1764 */ 1765 outb(PALRADR, 0x00); 1766 for (i = 0; i < 256*3; ++i) 1767 palette[i] = inb(PALDATA) << 2; 1768 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1769 return 0; 1770} 1771 1772/* 1773 * load_palette(): 1774 * Set DAC values. 1775 * 1776 * VGA 1777 */ 1778static int 1779vga_load_palette(video_adapter_t *adp, u_char *palette) 1780{ 1781 int i; 1782 1783 prologue(adp, V_ADP_PALETTE, 1); 1784 1785 outb(PIXMASK, 0xff); /* no pixelmask */ 1786 outb(PALWADR, 0x00); 1787 for (i = 0; i < 256*3; ++i) 1788 outb(PALDATA, palette[i] >> 2); 1789 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1790 outb(ATC, 0x20); /* enable palette */ 1791 return 0; 1792} 1793 1794/* 1795 * set_border(): 1796 * Change the border color. 1797 * 1798 * CGA/EGA/VGA 1799 */ 1800static int 1801vga_set_border(video_adapter_t *adp, int color) 1802{ 1803 prologue(adp, V_ADP_BORDER, 1); 1804 1805 switch (adp->va_type) { 1806 case KD_EGA: 1807 case KD_VGA: 1808 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1809 outb(ATC, 0x31); outb(ATC, color & 0xff); 1810 break; 1811 case KD_CGA: 1812 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 1813 break; 1814 case KD_MONO: 1815 case KD_HERCULES: 1816 default: 1817 break; 1818 } 1819 return 0; 1820} 1821 1822/* 1823 * save_state(): 1824 * Read video register values. 1825 * NOTE: this function only reads the standard EGA/VGA registers. 1826 * any extra/extended registers of SVGA adapters are not saved. 1827 * 1828 * VGA 1829 */ 1830static int 1831vga_save_state(video_adapter_t *adp, void *p, size_t size) 1832{ 1833 video_info_t info; 1834 u_char *buf; 1835 int crtc_addr; 1836 int i, j; 1837 int s; 1838 1839 if (size == 0) { 1840 /* return the required buffer size */ 1841 prologue(adp, V_ADP_STATESAVE, 0); 1842 return sizeof(adp_state_t); 1843 } else { 1844 prologue(adp, V_ADP_STATESAVE, 1); 1845 if (size < sizeof(adp_state_t)) 1846 return 1; 1847 } 1848 1849 ((adp_state_t *)p)->sig = V_STATE_SIG; 1850 buf = ((adp_state_t *)p)->regs; 1851 bzero(buf, V_MODE_PARAM_SIZE); 1852 crtc_addr = adp->va_crtc_addr; 1853 1854 s = splhigh(); 1855 1856 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1857 for (i = 0, j = 5; i < 4; i++) { 1858 outb(TSIDX, i + 1); 1859 buf[j++] = inb(TSREG); 1860 } 1861 buf[9] = inb(MISC + 10); /* dot-clock */ 1862 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1863 1864 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 1865 outb(crtc_addr, i); 1866 buf[j++] = inb(crtc_addr + 1); 1867 } 1868 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 1869 inb(crtc_addr + 6); /* reset flip-flop */ 1870 outb(ATC, i); 1871 buf[j++] = inb(ATC + 1); 1872 } 1873 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 1874 outb(GDCIDX, i); 1875 buf[j++] = inb(GDCREG); 1876 } 1877 inb(crtc_addr + 6); /* reset flip-flop */ 1878 outb(ATC, 0x20); /* enable palette */ 1879 1880 splx(s); 1881 1882#if 1 1883 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 1884 if (info.vi_flags & V_INFO_GRAPHICS) { 1885 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 1886 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 1887 } else { 1888 buf[0] = info.vi_width; /* COLS */ 1889 buf[1] = info.vi_height - 1; /* ROWS */ 1890 } 1891 buf[2] = info.vi_cheight; /* POINTS */ 1892 } else { 1893 /* XXX: shouldn't be happening... */ 1894 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 1895 adp->va_unit, adp->va_name); 1896 } 1897#else 1898 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 1899 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 1900 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 1901 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 1902 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 1903#endif 1904 1905 return 0; 1906} 1907 1908/* 1909 * load_state(): 1910 * Set video registers at once. 1911 * NOTE: this function only updates the standard EGA/VGA registers. 1912 * any extra/extended registers of SVGA adapters are not changed. 1913 * 1914 * EGA/VGA 1915 */ 1916static int 1917vga_load_state(video_adapter_t *adp, void *p) 1918{ 1919 u_char *buf; 1920 int crtc_addr; 1921 int s; 1922 int i; 1923 1924 prologue(adp, V_ADP_STATELOAD, 1); 1925 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1926 return 1; 1927 1928 buf = ((adp_state_t *)p)->regs; 1929 crtc_addr = adp->va_crtc_addr; 1930 1931 s = splhigh(); 1932 1933 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1934 for (i = 0; i < 4; ++i) { /* program sequencer */ 1935 outb(TSIDX, i + 1); 1936 outb(TSREG, buf[i + 5]); 1937 } 1938 outb(MISC, buf[9]); /* set dot-clock */ 1939 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1940 outb(crtc_addr, 0x11); 1941 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 1942 for (i = 0; i < 25; ++i) { /* program crtc */ 1943 outb(crtc_addr, i); 1944 outb(crtc_addr + 1, buf[i + 10]); 1945 } 1946 inb(crtc_addr+6); /* reset flip-flop */ 1947 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 1948 outb(ATC, i); 1949 outb(ATC, buf[i + 35]); 1950 } 1951 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 1952 outb(GDCIDX, i); 1953 outb(GDCREG, buf[i + 55]); 1954 } 1955 inb(crtc_addr + 6); /* reset flip-flop */ 1956 outb(ATC, 0x20); /* enable palette */ 1957 1958#ifndef VGA_NO_BIOS 1959 if (adp->va_unit == V_ADP_PRIMARY) { 1960 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 1961 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 1962 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 1963#if 0 1964 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 1965 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 1966#endif 1967 } 1968#endif /* VGA_NO_BIOS */ 1969 1970 splx(s); 1971 return 0; 1972} 1973 1974/* 1975 * set_origin(): 1976 * Change the origin (window mapping) of the banked frame buffer. 1977 */ 1978static int 1979vga_set_origin(video_adapter_t *adp, off_t offset) 1980{ 1981 /* 1982 * The standard video modes do not require window mapping; 1983 * always return error. 1984 */ 1985 return 1; 1986} 1987 1988/* 1989 * read_hw_cursor(): 1990 * Read the position of the hardware text cursor. 1991 * 1992 * all adapters 1993 */ 1994static int 1995vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 1996{ 1997 u_int16_t off; 1998 int s; 1999 2000 if (!init_done) 2001 return 1; 2002 2003 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2004 return 1; 2005 2006 s = spltty(); 2007 outb(adp->va_crtc_addr, 14); 2008 off = inb(adp->va_crtc_addr + 1); 2009 outb(adp->va_crtc_addr, 15); 2010 off = (off << 8) | inb(adp->va_crtc_addr + 1); 2011 splx(s); 2012 2013 *row = off / adp->va_info.vi_width; 2014 *col = off % adp->va_info.vi_width; 2015 2016 return 0; 2017} 2018 2019/* 2020 * set_hw_cursor(): 2021 * Move the hardware text cursor. If col and row are both -1, 2022 * the cursor won't be shown. 2023 * 2024 * all adapters 2025 */ 2026static int 2027vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 2028{ 2029 u_int16_t off; 2030 int s; 2031 2032 if (!init_done) 2033 return 1; 2034 2035 if ((col == -1) && (row == -1)) { 2036 off = -1; 2037 } else { 2038 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2039 return 1; 2040 off = row*adp->va_info.vi_width + col; 2041 } 2042 2043 s = spltty(); 2044 outb(adp->va_crtc_addr, 14); 2045 outb(adp->va_crtc_addr + 1, off >> 8); 2046 outb(adp->va_crtc_addr, 15); 2047 outb(adp->va_crtc_addr + 1, off & 0x00ff); 2048 splx(s); 2049 2050 return 0; 2051} 2052 2053/* 2054 * set_hw_cursor_shape(): 2055 * Change the shape of the hardware text cursor. If the height is 2056 * zero or negative, the cursor won't be shown. 2057 * 2058 * all adapters 2059 */ 2060static int 2061vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 2062 int celsize, int blink) 2063{ 2064 int s; 2065 2066 if (!init_done) 2067 return 1; 2068 2069 s = spltty(); 2070 switch (adp->va_type) { 2071 case KD_VGA: 2072 case KD_CGA: 2073 case KD_MONO: 2074 case KD_HERCULES: 2075 default: 2076 if (height <= 0) { 2077 /* make the cursor invisible */ 2078 outb(adp->va_crtc_addr, 10); 2079 outb(adp->va_crtc_addr + 1, 32); 2080 outb(adp->va_crtc_addr, 11); 2081 outb(adp->va_crtc_addr + 1, 0); 2082 } else { 2083 outb(adp->va_crtc_addr, 10); 2084 outb(adp->va_crtc_addr + 1, celsize - base - height); 2085 outb(adp->va_crtc_addr, 11); 2086 outb(adp->va_crtc_addr + 1, celsize - base - 1); 2087 } 2088 break; 2089 case KD_EGA: 2090 if (height <= 0) { 2091 /* make the cursor invisible */ 2092 outb(adp->va_crtc_addr, 10); 2093 outb(adp->va_crtc_addr + 1, celsize); 2094 outb(adp->va_crtc_addr, 11); 2095 outb(adp->va_crtc_addr + 1, 0); 2096 } else { 2097 outb(adp->va_crtc_addr, 10); 2098 outb(adp->va_crtc_addr + 1, celsize - base - height); 2099 outb(adp->va_crtc_addr, 11); 2100 outb(adp->va_crtc_addr + 1, celsize - base); 2101 } 2102 break; 2103 } 2104 splx(s); 2105 2106 return 0; 2107} 2108 2109/* 2110 * mmap(): 2111 * Mmap frame buffer. 2112 * 2113 * all adapters 2114 */ 2115static int 2116vga_mmap(video_adapter_t *adp, vm_offset_t offset) 2117{ 2118 if (offset > 0x20000 - PAGE_SIZE) 2119 return -1; 2120#ifdef __i386__ 2121 return i386_btop((VIDEO_BUF_BASE + offset)); 2122#endif 2123#ifdef __alpha__ 2124 return alpha_btop((VIDEO_BUF_BASE + offset)); 2125#endif 2126} 2127 2128static void 2129dump_buffer(u_char *buf, size_t len) 2130{ 2131 int i; 2132 2133 for(i = 0; i < len;) { 2134 printf("%02x ", buf[i]); 2135 if ((++i % 16) == 0) 2136 printf("\n"); 2137 } 2138} 2139 2140/* 2141 * diag(): 2142 * Print some information about the video adapter and video modes, 2143 * with requested level of details. 2144 * 2145 * all adapters 2146 */ 2147static int 2148vga_diag(video_adapter_t *adp, int level) 2149{ 2150#if FB_DEBUG > 1 2151 video_info_t info; 2152#endif 2153 u_char *mp; 2154 2155 if (!init_done) 2156 return 1; 2157 2158#if FB_DEBUG > 1 2159#ifndef VGA_NO_BIOS 2160 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", 2161 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); 2162 printf("vga: CRTC:0x%x, video option:0x%02x, ", 2163 readw(BIOS_PADDRTOVADDR(0x463)), 2164 readb(BIOS_PADDRTOVADDR(0x487))); 2165 printf("rows:%d, cols:%d, font height:%d\n", 2166 readb(BIOS_PADDRTOVADDR(0x44a)), 2167 readb(BIOS_PADDRTOVADDR(0x484)) + 1, 2168 readb(BIOS_PADDRTOVADDR(0x485))); 2169#endif /* VGA_NO_BIOS */ 2170 printf("vga: param table EGA/VGA:%p", video_mode_ptr); 2171 printf(", CGA/MDA:%p\n", video_mode_ptr2); 2172 printf("vga: rows_offset:%d\n", rows_offset); 2173#endif /* FB_DEBUG > 1 */ 2174 2175 fb_dump_adp_info(DRIVER_NAME, adp, level); 2176 2177#if FB_DEBUG > 1 2178 if (adp->va_flags & V_ADP_MODECHANGE) { 2179 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 2180 if (bios_vmode[i].vi_mode == NA) 2181 continue; 2182 if (get_mode_param(bios_vmode[i].vi_mode) == NULL) 2183 continue; 2184 fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level); 2185 } 2186 } else { 2187 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ 2188 fb_dump_mode_info(DRIVER_NAME, adp, &info, level); 2189 } 2190#endif /* FB_DEBUG > 1 */ 2191 2192 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) 2193 return 0; 2194#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2195 if (video_mode_ptr == NULL) 2196 printf("vga%d: %s: WARNING: video mode switching is not " 2197 "fully supported on this adapter\n", 2198 adp->va_unit, adp->va_name); 2199#endif 2200 if (level <= 0) 2201 return 0; 2202 2203 if (adp->va_type == KD_VGA) { 2204 printf("VGA parameters upon power-up\n"); 2205 dump_buffer(adpstate.regs, sizeof(adpstate.regs)); 2206 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); 2207 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); 2208 } 2209 2210 mp = get_mode_param(adp->va_initial_mode); 2211 if (mp == NULL) /* this shouldn't be happening */ 2212 return 0; 2213 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); 2214 dump_buffer(mp, V_MODE_PARAM_SIZE); 2215 2216 return 0; 2217} 2218 2219#endif /* NVGA > 0 */ 2220