vga_isa.c revision 46727
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 1.5 1999/04/16 23:54:24 peter Exp $ 30 */ 31 32#include "vga.h" 33#include "opt_vga.h" 34#include "opt_fb.h" 35#include "opt_syscons.h" /* should be removed in the future, XXX */ 36 37#if NVGA > 0 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> 42#include <sys/bus.h> 43#include <sys/malloc.h> 44 45#include <vm/vm.h> 46#include <vm/pmap.h> 47 48#include <machine/console.h> 49#include <machine/md_var.h> 50#include <machine/pc/bios.h> 51 52#include <dev/fb/fbreg.h> 53#include <dev/fb/vgareg.h> 54 55#if 1 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#if 1 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#if 1 139 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; 468#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 469static u_char *video_mode_ptr = NULL; /* EGA/VGA */ 470static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */ 471#endif 472static u_char *mode_map[V_MODE_MAP_SIZE]; 473static adp_state_t adpstate; 474static adp_state_t adpstate2; 475static int rows_offset = 1; 476 477/* local macros and functions */ 478#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 479 480#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 481static void map_mode_table(u_char *map[], u_char *table, int max); 482#endif 483static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max, 484 int color); 485#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 486static int map_mode_num(int mode); 487#endif 488static int map_gen_mode_num(int type, int color, int mode); 489static int map_bios_mode_num(int type, int color, int bios_mode); 490static u_char *get_mode_param(int mode); 491#ifndef VGA_NO_BIOS 492static void fill_adapter_param(int code, video_adapter_t *adp); 493#endif 494static int verify_adapter(video_adapter_t *adp); 495static void update_adapter_info(video_adapter_t *adp, video_info_t *info); 496#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 497#define COMP_IDENTICAL 0 498#define COMP_SIMILAR 1 499#define COMP_DIFFERENT 2 500static int comp_adpregs(u_char *buf1, u_char *buf2); 501#endif 502static int probe_adapters(void); 503 504#ifndef VGA_NO_FONT_LOADING 505#define PARAM_BUFSIZE 6 506static void set_font_mode(video_adapter_t *adp, u_char *buf); 507static void set_normal_mode(video_adapter_t *adp, u_char *buf); 508#endif 509 510static void dump_buffer(u_char *buf, size_t len); 511 512#define ISMAPPED(pa, width) \ 513 (((pa) <= (u_long)0x1000 - (width)) \ 514 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width))) 515 516#define prologue(adp, flag, err) \ 517 if (!init_done || !((adp)->va_flags & (flag))) \ 518 return (err) 519 520/* a backdoor for the console driver */ 521static int 522vga_configure(int flags) 523{ 524 int i; 525 526 probe_adapters(); 527 for (i = 0; i < biosadapters; ++i) { 528 if (!probe_done(&biosadapter[i])) 529 continue; 530 biosadapter[i].va_flags |= V_ADP_INITIALIZED; 531 if (!config_done(&biosadapter[i])) { 532 if (vid_register(&biosadapter[i]) < 0) 533 continue; 534 biosadapter[i].va_flags |= V_ADP_REGISTERED; 535 } 536 } 537 if (vga_sub_configure != NULL) 538 (*vga_sub_configure)(flags); 539 540 return biosadapters; 541} 542 543/* local subroutines */ 544 545#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 546/* construct the mode parameter map */ 547static void 548map_mode_table(u_char *map[], u_char *table, int max) 549{ 550 int i; 551 552 for(i = 0; i < max; ++i) 553 map[i] = table + i*V_MODE_PARAM_SIZE; 554 for(; i < V_MODE_MAP_SIZE; ++i) 555 map[i] = NULL; 556} 557#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 558 559static void 560clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color) 561{ 562 video_info_t info; 563 int i; 564 565 /* 566 * NOTE: we don't touch `bios_vmode[]' because it is shared 567 * by all adapters. 568 */ 569 for(i = 0; i < max; ++i) { 570 if (vga_get_info(adp, i, &info)) 571 continue; 572 if ((info.vi_flags & V_INFO_COLOR) != color) 573 map[i] = NULL; 574 } 575} 576 577#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 578/* map the non-standard video mode to a known mode number */ 579static int 580map_mode_num(int mode) 581{ 582 static struct { 583 int from; 584 int to; 585 } mode_map[] = { 586 { M_ENH_B80x43, M_ENH_B80x25 }, 587 { M_ENH_C80x43, M_ENH_C80x25 }, 588 { M_VGA_M80x30, M_VGA_M80x25 }, 589 { M_VGA_C80x30, M_VGA_C80x25 }, 590 { M_VGA_M80x50, M_VGA_M80x25 }, 591 { M_VGA_C80x50, M_VGA_C80x25 }, 592 { M_VGA_M80x60, M_VGA_M80x25 }, 593 { M_VGA_C80x60, M_VGA_C80x25 }, 594 { M_VGA_MODEX, M_VGA_CG320 }, 595 }; 596 int i; 597 598 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 599 if (mode_map[i].from == mode) 600 return mode_map[i].to; 601 } 602 return mode; 603} 604#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 605 606/* map a generic video mode to a known mode number */ 607static int 608map_gen_mode_num(int type, int color, int mode) 609{ 610 static struct { 611 int from; 612 int to_color; 613 int to_mono; 614 } mode_map[] = { 615 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, }, 616 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, }, 617 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, }, 618 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, }, 619 }; 620 int i; 621 622 if (mode == M_TEXT_80x25) { 623 switch (type) { 624 625 case KD_VGA: 626 if (color) 627 return M_VGA_C80x25; 628 else 629 return M_VGA_M80x25; 630 break; 631 632 case KD_EGA: 633 if (color) 634 return M_ENH_C80x25; 635 else 636 return M_EGAMONO80x25; 637 break; 638 639 case KD_CGA: 640 return M_C80x25; 641 642 case KD_MONO: 643 case KD_HERCULES: 644 return M_EGAMONO80x25; /* XXX: this name is confusing */ 645 646 default: 647 return -1; 648 } 649 } 650 651 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 652 if (mode_map[i].from == mode) 653 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono); 654 } 655 return mode; 656} 657 658/* turn the BIOS video number into our video mode number */ 659static int 660map_bios_mode_num(int type, int color, int bios_mode) 661{ 662 static int cga_modes[7] = { 663 M_B40x25, M_C40x25, /* 0, 1 */ 664 M_B80x25, M_C80x25, /* 2, 3 */ 665 M_BG320, M_CG320, 666 M_BG640, 667 }; 668 static int ega_modes[17] = { 669 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */ 670 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */ 671 M_BG320, M_CG320, 672 M_BG640, 673 M_EGAMONO80x25, /* 7 */ 674 8, 9, 10, 11, 12, 675 M_CG320_D, 676 M_CG640_E, 677 M_ENHMONOAPA2, /* XXX: video momery > 64K */ 678 M_ENH_CG640, /* XXX: video momery > 64K */ 679 }; 680 static int vga_modes[20] = { 681 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */ 682 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */ 683 M_BG320, M_CG320, 684 M_BG640, 685 M_VGA_M80x25, /* 7 */ 686 8, 9, 10, 11, 12, 687 M_CG320_D, 688 M_CG640_E, 689 M_ENHMONOAPA2, 690 M_ENH_CG640, 691 M_BG640x480, M_CG640x480, 692 M_VGA_CG320, 693 }; 694 695 switch (type) { 696 697 case KD_VGA: 698 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0])) 699 return vga_modes[bios_mode]; 700 else if (color) 701 return M_VGA_C80x25; 702 else 703 return M_VGA_M80x25; 704 break; 705 706 case KD_EGA: 707 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0])) 708 return ega_modes[bios_mode]; 709 else if (color) 710 return M_ENH_C80x25; 711 else 712 return M_EGAMONO80x25; 713 break; 714 715 case KD_CGA: 716 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0])) 717 return cga_modes[bios_mode]; 718 else 719 return M_C80x25; 720 break; 721 722 case KD_MONO: 723 case KD_HERCULES: 724 return M_EGAMONO80x25; /* XXX: this name is confusing */ 725 726 default: 727 break; 728 } 729 return -1; 730} 731 732/* look up a parameter table entry */ 733static u_char 734*get_mode_param(int mode) 735{ 736#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 737 if (mode >= V_MODE_MAP_SIZE) 738 mode = map_mode_num(mode); 739#endif 740 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE)) 741 return mode_map[mode]; 742 else 743 return NULL; 744} 745 746#ifndef VGA_NO_BIOS 747static void 748fill_adapter_param(int code, video_adapter_t *adp) 749{ 750 static struct { 751 int primary; 752 int secondary; 753 } dcc[] = { 754 { DCC_MONO, DCC_EGA40 /* CGA monitor */ }, 755 { DCC_MONO, DCC_EGA80 /* CGA monitor */ }, 756 { DCC_MONO, DCC_EGA80 /* CGA emulation */ }, 757 { DCC_MONO, DCC_EGA80 }, 758 { DCC_CGA40, DCC_EGAMONO }, 759 { DCC_CGA80, DCC_EGAMONO }, 760 { DCC_EGA40 /* CGA monitor */, DCC_MONO}, 761 { DCC_EGA80 /* CGA monitor */, DCC_MONO}, 762 { DCC_EGA80 /* CGA emulation */,DCC_MONO }, 763 { DCC_EGA80, DCC_MONO }, 764 { DCC_EGAMONO, DCC_CGA40 }, 765 { DCC_EGAMONO, DCC_CGA40 }, 766 }; 767 768 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) { 769 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 770 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 771 } else { 772 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary]; 773 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary]; 774 } 775} 776#endif /* VGA_NO_BIOS */ 777 778static int 779verify_adapter(video_adapter_t *adp) 780{ 781 vm_offset_t buf; 782 u_int16_t v; 783#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 784 u_int32_t p; 785#endif 786 787 buf = BIOS_PADDRTOVADDR(adp->va_window); 788 v = readw(buf); 789 writew(buf, 0xA55A); 790 if (readw(buf) != 0xA55A) 791 return 1; 792 writew(buf, v); 793 794 switch (adp->va_type) { 795 796 case KD_EGA: 797 outb(adp->va_crtc_addr, 7); 798 if (inb(adp->va_crtc_addr) == 7) { 799 adp->va_type = KD_VGA; 800 adp->va_name = "vga"; 801 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; 802 } 803 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER; 804 /* the color adapter may be in the 40x25 mode... XXX */ 805 806#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 807 /* get the BIOS video mode pointer */ 808 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8); 809 p = BIOS_SADDRTOLADDR(p); 810 if (ISMAPPED(p, sizeof(u_int32_t))) { 811 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p); 812 p = BIOS_SADDRTOLADDR(p); 813 if (ISMAPPED(p, V_MODE_PARAM_SIZE)) 814 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p); 815 } 816#endif 817 break; 818 819 case KD_CGA: 820 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; 821 /* may be in the 40x25 mode... XXX */ 822#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 823 /* get the BIOS video mode pointer */ 824 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 825 p = BIOS_SADDRTOLADDR(p); 826 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 827#endif 828 break; 829 830 case KD_MONO: 831#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 832 /* get the BIOS video mode pointer */ 833 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 834 p = BIOS_SADDRTOLADDR(p); 835 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 836#endif 837 break; 838 } 839 840 return 0; 841} 842 843static void 844update_adapter_info(video_adapter_t *adp, video_info_t *info) 845{ 846 adp->va_flags &= ~V_ADP_COLOR; 847 adp->va_flags |= 848 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 849 adp->va_crtc_addr = 850 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 851 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window); 852 adp->va_window_size = info->vi_window_size; 853 adp->va_window_gran = info->vi_window_gran; 854 if (info->vi_buffer_size == 0) { 855 adp->va_buffer = 0; 856 adp->va_buffer_size = 0; 857 } else { 858 adp->va_buffer = BIOS_PADDRTOVADDR(info->vi_buffer); 859 adp->va_buffer_size = info->vi_buffer_size; 860 } 861 if (info->vi_flags & V_INFO_GRAPHICS) { 862 switch (info->vi_depth/info->vi_planes) { 863 case 1: 864 adp->va_line_width = info->vi_width/8; 865 break; 866 case 2: 867 adp->va_line_width = info->vi_width/4; 868 break; 869 case 4: 870 adp->va_line_width = info->vi_width/2; 871 break; 872 case 8: 873 default: /* shouldn't happen */ 874 adp->va_line_width = info->vi_width; 875 break; 876 } 877 } else { 878 adp->va_line_width = info->vi_width; 879 } 880 bcopy(info, &adp->va_info, sizeof(adp->va_info)); 881} 882 883#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 884/* compare two parameter table entries */ 885static int 886comp_adpregs(u_char *buf1, u_char *buf2) 887{ 888 static struct { 889 u_char mask; 890 } params[V_MODE_PARAM_SIZE] = { 891 {0xff}, {0x00}, {0xff}, /* COLS, ROWS, POINTS */ 892 {0x00}, {0x00}, /* page length */ 893 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */ 894 {0xf3}, /* misc register */ 895 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */ 896 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, 897 {0x00}, {0x00}, {0x00}, {0x00}, {0x00}, 898 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff}, 899 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff}, 900 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */ 901 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, 902 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, 903 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0}, 904 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */ 905 {0xff}, {0xff}, {0xff}, {0xff}, 906 }; 907 int identical = TRUE; 908 int i; 909 910 if ((buf1 == NULL) || (buf2 == NULL)) 911 return COMP_DIFFERENT; 912 913 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 914 if (params[i].mask == 0) /* don't care */ 915 continue; 916 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 917 return COMP_DIFFERENT; 918 if (buf1[i] != buf2[i]) 919 identical = FALSE; 920 } 921 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 922} 923#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 924 925/* probe video adapters and return the number of detected adapters */ 926static int 927probe_adapters(void) 928{ 929 video_adapter_t *adp; 930 video_info_t info; 931 int i; 932 933 /* do this test only once */ 934 if (init_done) 935 return biosadapters; 936 init_done = TRUE; 937 938 /* 939 * Locate display adapters. 940 * The AT architecture supports upto two adapters. `syscons' allows 941 * the following combinations of adapters: 942 * 1) MDA + CGA 943 * 2) MDA + EGA/VGA color 944 * 3) CGA + EGA/VGA mono 945 * Note that `syscons' doesn't bother with MCGA as it is only 946 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 947 * thus, they are not running FreeBSD! 948 * When there are two adapaters in the system, one becomes `primary' 949 * and the other `secondary'. The EGA adapter has a set of DIP 950 * switches on board for this information and the EGA BIOS copies 951 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 952 * The VGA BIOS has more sophisticated mechanism and has this 953 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 954 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 955 */ 956 957 /* 958 * Check rtc and BIOS data area. 959 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 960 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 961 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 962 * these bits in BIOSDATA_EQUIPMENT according to the monitor 963 * type detected. 964 */ 965#ifndef VGA_NO_BIOS 966 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 967 case 0: 968 /* EGA/VGA */ 969 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 970 biosadapter); 971 break; 972 case 1: 973 /* CGA 40x25 */ 974 /* FIXME: switch to the 80x25 mode? XXX */ 975 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 976 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 977 break; 978 case 2: 979 /* CGA 80x25 */ 980 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 981 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 982 break; 983 case 3: 984 /* MDA */ 985 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 986 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 987 break; 988 } 989#else 990 /* assume EGA/VGA? XXX */ 991 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 992 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 993#endif /* VGA_NO_BIOS */ 994 995 biosadapters = 0; 996 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 997 ++biosadapters; 998 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 999 biosadapter[V_ADP_SECONDARY].va_mode = 1000 biosadapter[V_ADP_SECONDARY].va_initial_mode = 1001 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 1002 biosadapter[V_ADP_SECONDARY].va_flags 1003 & V_ADP_COLOR, 1004 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 1005 } else { 1006 biosadapter[V_ADP_SECONDARY].va_type = -1; 1007 } 1008 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 1009 ++biosadapters; 1010 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 1011#ifndef VGA_NO_BIOS 1012 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 1013 readb(BIOS_PADDRTOVADDR(0x449)); 1014#else 1015 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 1016#endif 1017 biosadapter[V_ADP_PRIMARY].va_mode = 1018 biosadapter[V_ADP_PRIMARY].va_initial_mode = 1019 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 1020 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 1021 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 1022 } else { 1023 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 1024 biosadapter[V_ADP_SECONDARY].va_type = -1; 1025 } 1026 if (biosadapters == 0) 1027 return biosadapters; 1028 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 1029 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 1030 1031#if 0 /* we don't need these... */ 1032 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 1033 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 1034#endif 1035 1036#if 0 1037 /* 1038 * We cannot have two video adapter of the same type; there must be 1039 * only one of color or mono adapter, or one each of them. 1040 */ 1041 if (biosadapters > 1) { 1042 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 1043 & V_ADP_COLOR)) 1044 /* we have two mono or color adapters!! */ 1045 return (biosadapters = 0); 1046 } 1047#endif 1048 1049 /* 1050 * Ensure a zero start address. This is mainly to recover after 1051 * switching from pcvt using userconfig(). The registers are w/o 1052 * for old hardware so it's too hard to relocate the active screen 1053 * memory. 1054 * This must be done before vga_save_state() for VGA. 1055 */ 1056 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 1057 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1058 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 1059 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1060 1061 /* the video mode parameter table in EGA/VGA BIOS */ 1062 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 1063 * recognized by the video BIOS. 1064 */ 1065 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 1066 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 1067 adp = &biosadapter[V_ADP_PRIMARY]; 1068 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 1069 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 1070 adp = &biosadapter[V_ADP_SECONDARY]; 1071 } else { 1072 adp = NULL; 1073 } 1074 bzero(mode_map, sizeof(mode_map)); 1075 if (adp != NULL) { 1076 if (adp->va_type == KD_VGA) { 1077 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1078#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1079 mode_map[adp->va_initial_mode] = adpstate.regs; 1080 rows_offset = 1; 1081#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1082 if (video_mode_ptr == NULL) { 1083 mode_map[adp->va_initial_mode] = adpstate.regs; 1084 rows_offset = 1; 1085 } else { 1086 /* discard the table if we are not familiar with it... */ 1087 u_char *mp; 1088 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1089 mp = get_mode_param(adp->va_initial_mode); 1090 if (mp != NULL) 1091 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1092 switch (comp_adpregs(adpstate.regs, mp)) { 1093 case COMP_IDENTICAL: 1094 /* 1095 * OK, this parameter table looks reasonably familiar 1096 * to us... 1097 */ 1098 /* 1099 * This is a kludge for Toshiba DynaBook SS433 1100 * whose BIOS video mode table entry has the actual # 1101 * of rows at the offset 1; BIOSes from other 1102 * manufacturers store the # of rows - 1 there. XXX 1103 */ 1104 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1105 break; 1106 1107 case COMP_SIMILAR: 1108 /* 1109 * Not exactly the same, but similar enough to be 1110 * trusted. However, use the saved register values 1111 * for the initial mode and other modes which are 1112 * based on the initial mode. 1113 */ 1114 mode_map[adp->va_initial_mode] = adpstate.regs; 1115 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1116 adpstate.regs[1] -= rows_offset - 1; 1117 break; 1118 1119 case COMP_DIFFERENT: 1120 default: 1121 /* 1122 * Don't use the paramter table in BIOS. It doesn't 1123 * look familiar to us. Video mode switching is allowed 1124 * only if the new mode is the same as or based on 1125 * the initial mode. 1126 */ 1127 video_mode_ptr = NULL; 1128 bzero(mode_map, sizeof(mode_map)); 1129 mode_map[adp->va_initial_mode] = adpstate.regs; 1130 rows_offset = 1; 1131 break; 1132 } 1133 } 1134#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1135 1136#ifndef VGA_NO_MODE_CHANGE 1137 adp->va_flags |= V_ADP_MODECHANGE; 1138#endif 1139#ifndef VGA_NO_FONT_LOADING 1140 adp->va_flags |= V_ADP_FONT; 1141#endif 1142 } else if (adp->va_type == KD_EGA) { 1143#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1144 rows_offset = 1; 1145#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1146 if (video_mode_ptr == NULL) { 1147 rows_offset = 1; 1148 } else { 1149 u_char *mp; 1150 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1151 /* XXX how can one validate the EGA table... */ 1152 mp = get_mode_param(adp->va_initial_mode); 1153 if (mp != NULL) { 1154 adp->va_flags |= V_ADP_MODECHANGE; 1155#ifndef VGA_NO_FONT_LOADING 1156 adp->va_flags |= V_ADP_FONT; 1157#endif 1158 rows_offset = 1; 1159 } else { 1160 /* 1161 * This is serious. We will not be able to switch video 1162 * modes at all... 1163 */ 1164 video_mode_ptr = NULL; 1165 bzero(mode_map, sizeof(mode_map)); 1166 rows_offset = 1; 1167 } 1168 } 1169#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1170 } 1171 } 1172 1173 /* remove conflicting modes if we have more than one adapter */ 1174 if (biosadapters > 1) { 1175 for (i = 0; i < biosadapters; ++i) { 1176 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1177 continue; 1178 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1179 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1180 V_INFO_COLOR : 0); 1181 if ((biosadapter[i].va_type == KD_VGA) 1182 || (biosadapter[i].va_type == KD_EGA)) { 1183 biosadapter[i].va_io_base = 1184 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1185 IO_VGA : IO_MDA; 1186 biosadapter[i].va_io_size = 32; 1187 } 1188 } 1189 } 1190 1191 /* buffer address */ 1192 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1193 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1194 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); 1195 1196 if (biosadapters > 1) { 1197 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1198 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1199 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); 1200 } 1201 1202 /* 1203 * XXX: we should verify the following values for the primary adapter... 1204 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1205 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1206 * ? 0 : V_ADP_COLOR; 1207 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1208 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1209 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1210 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1211 */ 1212 1213 return biosadapters; 1214} 1215 1216/* entry points */ 1217 1218static int 1219vga_nop(void) 1220{ 1221 return 0; 1222} 1223 1224static int 1225vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1226{ 1227 probe_adapters(); 1228 if (unit >= biosadapters) 1229 return ENXIO; 1230 1231 *adpp = &biosadapter[unit]; 1232 1233 return 0; 1234} 1235 1236static int 1237vga_init(int unit, video_adapter_t *adp, int flags) 1238{ 1239 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1240 return ENXIO; 1241 1242 if (!init_done(adp)) { 1243 /* nothing to do really... */ 1244 adp->va_flags |= V_ADP_INITIALIZED; 1245 } 1246 1247 if (!config_done(adp)) { 1248 if (vid_register(adp) < 0) 1249 return ENXIO; 1250 adp->va_flags |= V_ADP_REGISTERED; 1251 } 1252 if (vga_sub_configure != NULL) 1253 (*vga_sub_configure)(0); 1254 1255 return 0; 1256} 1257 1258/* 1259 * get_info(): 1260 * Return the video_info structure of the requested video mode. 1261 * 1262 * all adapters 1263 */ 1264static int 1265vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1266{ 1267 int i; 1268 1269 if (!init_done) 1270 return 1; 1271 1272 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1273#ifndef VGA_NO_MODE_CHANGE 1274 if (adp->va_flags & V_ADP_MODECHANGE) { 1275 /* 1276 * If the parameter table entry for this mode is not found, 1277 * the mode is not supported... 1278 */ 1279 if (get_mode_param(mode) == NULL) 1280 return 1; 1281 } else 1282#endif /* VGA_NO_MODE_CHANGE */ 1283 { 1284 /* 1285 * Even if we don't support video mode switching on this adapter, 1286 * the information on the initial (thus current) video mode 1287 * should be made available. 1288 */ 1289 if (mode != adp->va_initial_mode) 1290 return 1; 1291 } 1292 1293 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1294 if (bios_vmode[i].vi_mode == NA) 1295 continue; 1296 if (mode == bios_vmode[i].vi_mode) { 1297 *info = bios_vmode[i]; 1298 return 0; 1299 } 1300 } 1301 return 1; 1302} 1303 1304/* 1305 * query_mode(): 1306 * Find a video mode matching the requested parameters. 1307 * Fields filled with 0 are considered "don't care" fields and 1308 * match any modes. 1309 * 1310 * all adapters 1311 */ 1312static int 1313vga_query_mode(video_adapter_t *adp, video_info_t *info) 1314{ 1315 video_info_t buf; 1316 int i; 1317 1318 if (!init_done) 1319 return -1; 1320 1321 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1322 if (bios_vmode[i].vi_mode == NA) 1323 continue; 1324 1325 if ((info->vi_width != 0) 1326 && (info->vi_width != bios_vmode[i].vi_width)) 1327 continue; 1328 if ((info->vi_height != 0) 1329 && (info->vi_height != bios_vmode[i].vi_height)) 1330 continue; 1331 if ((info->vi_cwidth != 0) 1332 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1333 continue; 1334 if ((info->vi_cheight != 0) 1335 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1336 continue; 1337 if ((info->vi_depth != 0) 1338 && (info->vi_depth != bios_vmode[i].vi_depth)) 1339 continue; 1340 if ((info->vi_planes != 0) 1341 && (info->vi_planes != bios_vmode[i].vi_planes)) 1342 continue; 1343 /* XXX: should check pixel format, memory model */ 1344 if ((info->vi_flags != 0) 1345 && (info->vi_flags != bios_vmode[i].vi_flags)) 1346 continue; 1347 1348 /* verify if this mode is supported on this adapter */ 1349 if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf)) 1350 continue; 1351 return bios_vmode[i].vi_mode; 1352 } 1353 return -1; 1354} 1355 1356/* 1357 * set_mode(): 1358 * Change the video mode. 1359 * 1360 * EGA/VGA 1361 */ 1362static int 1363vga_set_mode(video_adapter_t *adp, int mode) 1364{ 1365#ifndef VGA_NO_MODE_CHANGE 1366 video_info_t info; 1367 adp_state_t params; 1368 1369 prologue(adp, V_ADP_MODECHANGE, 1); 1370 1371 mode = map_gen_mode_num(adp->va_type, 1372 adp->va_flags & V_ADP_COLOR, mode); 1373 if (vga_get_info(adp, mode, &info)) 1374 return 1; 1375 params.sig = V_STATE_SIG; 1376 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1377 1378 switch (mode) { 1379 case M_VGA_C80x60: case M_VGA_M80x60: 1380 params.regs[2] = 0x08; 1381 params.regs[19] = 0x47; 1382 goto special_480l; 1383 1384 case M_VGA_C80x30: case M_VGA_M80x30: 1385 params.regs[19] = 0x4f; 1386special_480l: 1387 params.regs[9] |= 0xc0; 1388 params.regs[16] = 0x08; 1389 params.regs[17] = 0x3e; 1390 params.regs[26] = 0xea; 1391 params.regs[28] = 0xdf; 1392 params.regs[31] = 0xe7; 1393 params.regs[32] = 0x04; 1394 goto setup_mode; 1395 1396 case M_ENH_C80x43: case M_ENH_B80x43: 1397 params.regs[28] = 87; 1398 goto special_80x50; 1399 1400 case M_VGA_C80x50: case M_VGA_M80x50: 1401special_80x50: 1402 params.regs[2] = 8; 1403 params.regs[19] = 7; 1404 goto setup_mode; 1405 1406 case M_VGA_C40x25: case M_VGA_C80x25: 1407 case M_VGA_M80x25: 1408 case M_B40x25: case M_C40x25: 1409 case M_B80x25: case M_C80x25: 1410 case M_ENH_B40x25: case M_ENH_C40x25: 1411 case M_ENH_B80x25: case M_ENH_C80x25: 1412 case M_EGAMONO80x25: 1413 1414setup_mode: 1415 vga_load_state(adp, ¶ms); 1416 break; 1417 1418 case M_VGA_MODEX: 1419 /* "unchain" the VGA mode */ 1420 params.regs[5-1+0x04] &= 0xf7; 1421 params.regs[5-1+0x04] |= 0x04; 1422 /* turn off doubleword mode */ 1423 params.regs[10+0x14] &= 0xbf; 1424 /* turn off word adressing */ 1425 params.regs[10+0x17] |= 0x40; 1426 /* set logical screen width */ 1427 params.regs[10+0x13] = 80; 1428 /* set 240 lines */ 1429 params.regs[10+0x11] = 0x2c; 1430 params.regs[10+0x06] = 0x0d; 1431 params.regs[10+0x07] = 0x3e; 1432 params.regs[10+0x10] = 0xea; 1433 params.regs[10+0x11] = 0xac; 1434 params.regs[10+0x12] = 0xdf; 1435 params.regs[10+0x15] = 0xe7; 1436 params.regs[10+0x16] = 0x06; 1437 /* set vertical sync polarity to reflect aspect ratio */ 1438 params.regs[9] = 0xe3; 1439 goto setup_grmode; 1440 1441 case M_BG320: case M_CG320: case M_BG640: 1442 case M_CG320_D: case M_CG640_E: 1443 case M_CG640x350: case M_ENH_CG640: 1444 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1445 1446setup_grmode: 1447 vga_load_state(adp, ¶ms); 1448 break; 1449 1450 default: 1451 return 1; 1452 } 1453 1454 adp->va_mode = mode; 1455 update_adapter_info(adp, &info); 1456 1457 /* move hardware cursor out of the way */ 1458 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1459 1460 return 0; 1461#else /* VGA_NO_MODE_CHANGE */ 1462 return 1; 1463#endif /* VGA_NO_MODE_CHANGE */ 1464} 1465 1466#ifndef VGA_NO_FONT_LOADING 1467 1468static void 1469set_font_mode(video_adapter_t *adp, u_char *buf) 1470{ 1471 u_char *mp; 1472 int s; 1473 1474 s = splhigh(); 1475 1476 /* save register values */ 1477 if (adp->va_type == KD_VGA) { 1478 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1479 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1480 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1481 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1482 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1483 inb(adp->va_crtc_addr + 6); 1484 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1485 } else /* if (adp->va_type == KD_EGA) */ { 1486 /* 1487 * EGA cannot be read; copy parameters from the mode parameter 1488 * table. 1489 */ 1490 mp = get_mode_param(adp->va_mode); 1491 buf[0] = mp[5 + 0x02 - 1]; 1492 buf[1] = mp[5 + 0x04 - 1]; 1493 buf[2] = mp[55 + 0x04]; 1494 buf[3] = mp[55 + 0x05]; 1495 buf[4] = mp[55 + 0x06]; 1496 buf[5] = mp[35 + 0x10]; 1497 } 1498 1499 /* setup vga for loading fonts */ 1500 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1501 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1502 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1503 outb(ATC, 0x20); /* enable palette */ 1504 1505#if VGA_SLOW_IOACCESS 1506#ifdef VGA_ALT_SEQACCESS 1507 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1508#endif 1509 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1510 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1511#ifdef VGA_ALT_SEQACCESS 1512 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1513#endif 1514 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1515 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1516 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1517#else /* VGA_SLOW_IOACCESS */ 1518#ifdef VGA_ALT_SEQACCESS 1519 outw(TSIDX, 0x0100); 1520#endif 1521 outw(TSIDX, 0x0402); 1522 outw(TSIDX, 0x0704); 1523#ifdef VGA_ALT_SEQACCESS 1524 outw(TSIDX, 0x0300); 1525#endif 1526 outw(GDCIDX, 0x0204); 1527 outw(GDCIDX, 0x0005); 1528 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1529#endif /* VGA_SLOW_IOACCESS */ 1530 1531 splx(s); 1532} 1533 1534static void 1535set_normal_mode(video_adapter_t *adp, u_char *buf) 1536{ 1537 int s; 1538 1539 s = splhigh(); 1540 1541 /* setup vga for normal operation mode again */ 1542 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1543 outb(ATC, 0x10); outb(ATC, buf[5]); 1544 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1545 outb(ATC, 0x20); /* enable palette */ 1546 1547#if VGA_SLOW_IOACCESS 1548#ifdef VGA_ALT_SEQACCESS 1549 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1550#endif 1551 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1552 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1553#ifdef VGA_ALT_SEQACCESS 1554 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1555#endif 1556 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1557 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1558 if (adp->va_crtc_addr == MONO_CRTC) { 1559 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1560 } else { 1561 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1562 } 1563#else /* VGA_SLOW_IOACCESS */ 1564#ifdef VGA_ALT_SEQACCESS 1565 outw(TSIDX, 0x0100); 1566#endif 1567 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1568 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1569#ifdef VGA_ALT_SEQACCESS 1570 outw(TSIDX, 0x0300); 1571#endif 1572 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1573 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1574 if (adp->va_crtc_addr == MONO_CRTC) 1575 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1576 else 1577 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1578#endif /* VGA_SLOW_IOACCESS */ 1579 1580 splx(s); 1581} 1582 1583#endif /* VGA_NO_FONT_LOADING */ 1584 1585/* 1586 * save_font(): 1587 * Read the font data in the requested font page from the video adapter. 1588 * 1589 * EGA/VGA 1590 */ 1591static int 1592vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1593 int ch, int count) 1594{ 1595#ifndef VGA_NO_FONT_LOADING 1596 u_char buf[PARAM_BUFSIZE]; 1597 u_int32_t segment; 1598 int c; 1599#ifdef VGA_ALT_SEQACCESS 1600 int s; 1601 u_char val = 0; 1602#endif 1603 1604 prologue(adp, V_ADP_FONT, 1); 1605 1606 if (fontsize < 14) { 1607 /* FONT_8 */ 1608 fontsize = 8; 1609 } else if (fontsize >= 32) { 1610 fontsize = 32; 1611 } else if (fontsize >= 16) { 1612 /* FONT_16 */ 1613 fontsize = 16; 1614 } else { 1615 /* FONT_14 */ 1616 fontsize = 14; 1617 } 1618 1619 if (page < 0 || page >= 8) 1620 return 1; 1621 segment = FONT_BUF + 0x4000*page; 1622 if (page > 3) 1623 segment -= 0xe000; 1624 1625#ifdef VGA_ALT_SEQACCESS 1626 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1627 s = splhigh(); 1628 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1629 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1630 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1631 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1632 splx(s); 1633 } 1634#endif 1635 1636 set_font_mode(adp, buf); 1637 if (fontsize == 32) { 1638 bcopy_fromio(segment + ch*32, data, fontsize*count); 1639 } else { 1640 for (c = ch; count > 0; ++c, --count) { 1641 bcopy_fromio(segment + c*32, data, fontsize); 1642 data += fontsize; 1643 } 1644 } 1645 set_normal_mode(adp, buf); 1646 1647#ifdef VGA_ALT_SEQACCESS 1648 if (adp->va_type == KD_VGA) { 1649 s = splhigh(); 1650 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1651 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1652 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1653 splx(s); 1654 } 1655#endif 1656 1657 return 0; 1658#else /* VGA_NO_FONT_LOADING */ 1659 return 1; 1660#endif /* VGA_NO_FONT_LOADING */ 1661} 1662 1663/* 1664 * load_font(): 1665 * Set the font data in the requested font page. 1666 * NOTE: it appears that some recent video adapters do not support 1667 * the font page other than 0... XXX 1668 * 1669 * EGA/VGA 1670 */ 1671static int 1672vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1673 int ch, int count) 1674{ 1675#ifndef VGA_NO_FONT_LOADING 1676 u_char buf[PARAM_BUFSIZE]; 1677 u_int32_t segment; 1678 int c; 1679#ifdef VGA_ALT_SEQACCESS 1680 int s; 1681 u_char val = 0; 1682#endif 1683 1684 prologue(adp, V_ADP_FONT, 1); 1685 1686 if (fontsize < 14) { 1687 /* FONT_8 */ 1688 fontsize = 8; 1689 } else if (fontsize >= 32) { 1690 fontsize = 32; 1691 } else if (fontsize >= 16) { 1692 /* FONT_16 */ 1693 fontsize = 16; 1694 } else { 1695 /* FONT_14 */ 1696 fontsize = 14; 1697 } 1698 1699 if (page < 0 || page >= 8) 1700 return 1; 1701 segment = FONT_BUF + 0x4000*page; 1702 if (page > 3) 1703 segment -= 0xe000; 1704 1705#ifdef VGA_ALT_SEQACCESS 1706 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1707 s = splhigh(); 1708 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1709 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1710 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1711 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1712 splx(s); 1713 } 1714#endif 1715 1716 set_font_mode(adp, buf); 1717 if (fontsize == 32) { 1718 bcopy_toio(data, segment + ch*32, fontsize*count); 1719 } else { 1720 for (c = ch; count > 0; ++c, --count) { 1721 bcopy_toio(data, segment + c*32, fontsize); 1722 data += fontsize; 1723 } 1724 } 1725 set_normal_mode(adp, buf); 1726 1727#ifdef VGA_ALT_SEQACCESS 1728 if (adp->va_type == KD_VGA) { 1729 s = splhigh(); 1730 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1731 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1732 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1733 splx(s); 1734 } 1735#endif 1736 1737 return 0; 1738#else /* VGA_NO_FONT_LOADING */ 1739 return 1; 1740#endif /* VGA_NO_FONT_LOADING */ 1741} 1742 1743/* 1744 * show_font(): 1745 * Activate the requested font page. 1746 * NOTE: it appears that some recent video adapters do not support 1747 * the font page other than 0... XXX 1748 * 1749 * EGA/VGA 1750 */ 1751static int 1752vga_show_font(video_adapter_t *adp, int page) 1753{ 1754#ifndef VGA_NO_FONT_LOADING 1755 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1756 int s; 1757 1758 prologue(adp, V_ADP_FONT, 1); 1759 if (page < 0 || page >= 8) 1760 return 1; 1761 1762 s = splhigh(); 1763 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1764 splx(s); 1765 1766 return 0; 1767#else /* VGA_NO_FONT_LOADING */ 1768 return 1; 1769#endif /* VGA_NO_FONT_LOADING */ 1770} 1771 1772/* 1773 * save_palette(): 1774 * Read DAC values. The values have expressed in 8 bits. 1775 * 1776 * VGA 1777 */ 1778static int 1779vga_save_palette(video_adapter_t *adp, u_char *palette) 1780{ 1781 int i; 1782 1783 prologue(adp, V_ADP_PALETTE, 1); 1784 1785 /* 1786 * We store 8 bit values in the palette buffer, while the standard 1787 * VGA has 6 bit DAC . 1788 */ 1789 outb(PALRADR, 0x00); 1790 for (i = 0; i < 256*3; ++i) 1791 palette[i] = inb(PALDATA) << 2; 1792 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1793 return 0; 1794} 1795 1796/* 1797 * load_palette(): 1798 * Set DAC values. 1799 * 1800 * VGA 1801 */ 1802static int 1803vga_load_palette(video_adapter_t *adp, u_char *palette) 1804{ 1805 int i; 1806 1807 prologue(adp, V_ADP_PALETTE, 1); 1808 1809 outb(PIXMASK, 0xff); /* no pixelmask */ 1810 outb(PALWADR, 0x00); 1811 for (i = 0; i < 256*3; ++i) 1812 outb(PALDATA, palette[i] >> 2); 1813 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1814 outb(ATC, 0x20); /* enable palette */ 1815 return 0; 1816} 1817 1818/* 1819 * set_border(): 1820 * Change the border color. 1821 * 1822 * CGA/EGA/VGA 1823 */ 1824static int 1825vga_set_border(video_adapter_t *adp, int color) 1826{ 1827 prologue(adp, V_ADP_BORDER, 1); 1828 1829 switch (adp->va_type) { 1830 case KD_EGA: 1831 case KD_VGA: 1832 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1833 outb(ATC, 0x31); outb(ATC, color & 0xff); 1834 break; 1835 case KD_CGA: 1836 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 1837 break; 1838 case KD_MONO: 1839 case KD_HERCULES: 1840 default: 1841 break; 1842 } 1843 return 0; 1844} 1845 1846/* 1847 * save_state(): 1848 * Read video register values. 1849 * NOTE: this function only reads the standard EGA/VGA registers. 1850 * any extra/extended registers of SVGA adapters are not saved. 1851 * 1852 * VGA 1853 */ 1854static int 1855vga_save_state(video_adapter_t *adp, void *p, size_t size) 1856{ 1857 video_info_t info; 1858 u_char *buf; 1859 int crtc_addr; 1860 int i, j; 1861 int s; 1862 1863 if (size == 0) { 1864 /* return the required buffer size */ 1865 prologue(adp, V_ADP_STATESAVE, 0); 1866 return sizeof(adp_state_t); 1867 } else { 1868 prologue(adp, V_ADP_STATESAVE, 1); 1869 if (size < sizeof(adp_state_t)) 1870 return 1; 1871 } 1872 1873 ((adp_state_t *)p)->sig = V_STATE_SIG; 1874 buf = ((adp_state_t *)p)->regs; 1875 bzero(buf, V_MODE_PARAM_SIZE); 1876 crtc_addr = adp->va_crtc_addr; 1877 1878 s = splhigh(); 1879 1880 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1881 for (i = 0, j = 5; i < 4; i++) { 1882 outb(TSIDX, i + 1); 1883 buf[j++] = inb(TSREG); 1884 } 1885 buf[9] = inb(MISC + 10); /* dot-clock */ 1886 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1887 1888 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 1889 outb(crtc_addr, i); 1890 buf[j++] = inb(crtc_addr + 1); 1891 } 1892 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 1893 inb(crtc_addr + 6); /* reset flip-flop */ 1894 outb(ATC, i); 1895 buf[j++] = inb(ATC + 1); 1896 } 1897 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 1898 outb(GDCIDX, i); 1899 buf[j++] = inb(GDCREG); 1900 } 1901 inb(crtc_addr + 6); /* reset flip-flop */ 1902 outb(ATC, 0x20); /* enable palette */ 1903 1904 splx(s); 1905 1906#if 1 1907 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 1908 if (info.vi_flags & V_INFO_GRAPHICS) { 1909 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 1910 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 1911 } else { 1912 buf[0] = info.vi_width; /* COLS */ 1913 buf[1] = info.vi_height - 1; /* ROWS */ 1914 } 1915 buf[2] = info.vi_cheight; /* POINTS */ 1916 } else { 1917 /* XXX: shouldn't be happening... */ 1918 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 1919 adp->va_unit, adp->va_name); 1920 } 1921#else 1922 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 1923 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 1924 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 1925 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 1926 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 1927#endif 1928 1929 return 0; 1930} 1931 1932/* 1933 * load_state(): 1934 * Set video registers at once. 1935 * NOTE: this function only updates the standard EGA/VGA registers. 1936 * any extra/extended registers of SVGA adapters are not changed. 1937 * 1938 * EGA/VGA 1939 */ 1940static int 1941vga_load_state(video_adapter_t *adp, void *p) 1942{ 1943 u_char *buf; 1944 int crtc_addr; 1945 int s; 1946 int i; 1947 1948 prologue(adp, V_ADP_STATELOAD, 1); 1949 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1950 return 1; 1951 1952 buf = ((adp_state_t *)p)->regs; 1953 crtc_addr = adp->va_crtc_addr; 1954 1955 s = splhigh(); 1956 1957 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1958 for (i = 0; i < 4; ++i) { /* program sequencer */ 1959 outb(TSIDX, i + 1); 1960 outb(TSREG, buf[i + 5]); 1961 } 1962 outb(MISC, buf[9]); /* set dot-clock */ 1963 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1964 outb(crtc_addr, 0x11); 1965 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 1966 for (i = 0; i < 25; ++i) { /* program crtc */ 1967 outb(crtc_addr, i); 1968 outb(crtc_addr + 1, buf[i + 10]); 1969 } 1970 inb(crtc_addr+6); /* reset flip-flop */ 1971 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 1972 outb(ATC, i); 1973 outb(ATC, buf[i + 35]); 1974 } 1975 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 1976 outb(GDCIDX, i); 1977 outb(GDCREG, buf[i + 55]); 1978 } 1979 inb(crtc_addr + 6); /* reset flip-flop */ 1980 outb(ATC, 0x20); /* enable palette */ 1981 1982#if notyet /* a temporary workaround for kernel panic, XXX */ 1983#ifndef VGA_NO_BIOS 1984 if (adp->va_unit == V_ADP_PRIMARY) { 1985 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 1986 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 1987 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 1988#if 0 1989 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 1990 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 1991#endif 1992 } 1993#endif /* VGA_NO_BIOS */ 1994#endif /* notyet */ 1995 1996 splx(s); 1997 return 0; 1998} 1999 2000/* 2001 * set_origin(): 2002 * Change the origin (window mapping) of the banked frame buffer. 2003 */ 2004static int 2005vga_set_origin(video_adapter_t *adp, off_t offset) 2006{ 2007 /* 2008 * The standard video modes do not require window mapping; 2009 * always return error. 2010 */ 2011 return 1; 2012} 2013 2014/* 2015 * read_hw_cursor(): 2016 * Read the position of the hardware text cursor. 2017 * 2018 * all adapters 2019 */ 2020static int 2021vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 2022{ 2023 u_int16_t off; 2024 int s; 2025 2026 if (!init_done) 2027 return 1; 2028 2029 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2030 return 1; 2031 2032 s = spltty(); 2033 outb(adp->va_crtc_addr, 14); 2034 off = inb(adp->va_crtc_addr + 1); 2035 outb(adp->va_crtc_addr, 15); 2036 off = (off << 8) | inb(adp->va_crtc_addr + 1); 2037 splx(s); 2038 2039 *row = off / adp->va_info.vi_width; 2040 *col = off % adp->va_info.vi_width; 2041 2042 return 0; 2043} 2044 2045/* 2046 * set_hw_cursor(): 2047 * Move the hardware text cursor. If col and row are both -1, 2048 * the cursor won't be shown. 2049 * 2050 * all adapters 2051 */ 2052static int 2053vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 2054{ 2055 u_int16_t off; 2056 int s; 2057 2058 if (!init_done) 2059 return 1; 2060 2061 if ((col == -1) && (row == -1)) { 2062 off = -1; 2063 } else { 2064 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2065 return 1; 2066 off = row*adp->va_info.vi_width + col; 2067 } 2068 2069 s = spltty(); 2070 outb(adp->va_crtc_addr, 14); 2071 outb(adp->va_crtc_addr + 1, off >> 8); 2072 outb(adp->va_crtc_addr, 15); 2073 outb(adp->va_crtc_addr + 1, off & 0x00ff); 2074 splx(s); 2075 2076 return 0; 2077} 2078 2079/* 2080 * set_hw_cursor_shape(): 2081 * Change the shape of the hardware text cursor. If the height is 2082 * zero or negative, the cursor won't be shown. 2083 * 2084 * all adapters 2085 */ 2086static int 2087vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 2088 int celsize, int blink) 2089{ 2090 int s; 2091 2092 if (!init_done) 2093 return 1; 2094 2095 s = spltty(); 2096 switch (adp->va_type) { 2097 case KD_VGA: 2098 case KD_CGA: 2099 case KD_MONO: 2100 case KD_HERCULES: 2101 default: 2102 if (height <= 0) { 2103 /* make the cursor invisible */ 2104 outb(adp->va_crtc_addr, 10); 2105 outb(adp->va_crtc_addr + 1, 32); 2106 outb(adp->va_crtc_addr, 11); 2107 outb(adp->va_crtc_addr + 1, 0); 2108 } else { 2109 outb(adp->va_crtc_addr, 10); 2110 outb(adp->va_crtc_addr + 1, celsize - base - height); 2111 outb(adp->va_crtc_addr, 11); 2112 outb(adp->va_crtc_addr + 1, celsize - base - 1); 2113 } 2114 break; 2115 case KD_EGA: 2116 if (height <= 0) { 2117 /* make the cursor invisible */ 2118 outb(adp->va_crtc_addr, 10); 2119 outb(adp->va_crtc_addr + 1, celsize); 2120 outb(adp->va_crtc_addr, 11); 2121 outb(adp->va_crtc_addr + 1, 0); 2122 } else { 2123 outb(adp->va_crtc_addr, 10); 2124 outb(adp->va_crtc_addr + 1, celsize - base - height); 2125 outb(adp->va_crtc_addr, 11); 2126 outb(adp->va_crtc_addr + 1, celsize - base); 2127 } 2128 break; 2129 } 2130 splx(s); 2131 2132 return 0; 2133} 2134 2135/* 2136 * mmap(): 2137 * Mmap frame buffer. 2138 * 2139 * all adapters 2140 */ 2141static int 2142vga_mmap(video_adapter_t *adp, vm_offset_t offset) 2143{ 2144 if (offset > 0x20000 - PAGE_SIZE) 2145 return -1; 2146#ifdef __i386__ 2147 return i386_btop((VIDEO_BUF_BASE + offset)); 2148#endif 2149#ifdef __alpha__ 2150 return alpha_btop((VIDEO_BUF_BASE + offset)); 2151#endif 2152} 2153 2154static void 2155dump_buffer(u_char *buf, size_t len) 2156{ 2157 int i; 2158 2159 for(i = 0; i < len;) { 2160 printf("%02x ", buf[i]); 2161 if ((++i % 16) == 0) 2162 printf("\n"); 2163 } 2164} 2165 2166/* 2167 * diag(): 2168 * Print some information about the video adapter and video modes, 2169 * with requested level of details. 2170 * 2171 * all adapters 2172 */ 2173static int 2174vga_diag(video_adapter_t *adp, int level) 2175{ 2176#if FB_DEBUG > 1 2177 video_info_t info; 2178#endif 2179 u_char *mp; 2180 2181 if (!init_done) 2182 return 1; 2183 2184#if FB_DEBUG > 1 2185#ifndef VGA_NO_BIOS 2186 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", 2187 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); 2188 printf("vga: CRTC:0x%x, video option:0x%02x, ", 2189 readw(BIOS_PADDRTOVADDR(0x463)), 2190 readb(BIOS_PADDRTOVADDR(0x487))); 2191 printf("rows:%d, cols:%d, font height:%d\n", 2192 readb(BIOS_PADDRTOVADDR(0x44a)), 2193 readb(BIOS_PADDRTOVADDR(0x484)) + 1, 2194 readb(BIOS_PADDRTOVADDR(0x485))); 2195#endif /* VGA_NO_BIOS */ 2196#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2197 printf("vga: param table EGA/VGA:%p", video_mode_ptr); 2198 printf(", CGA/MDA:%p\n", video_mode_ptr2); 2199#endif 2200 printf("vga: rows_offset:%d\n", rows_offset); 2201#endif /* FB_DEBUG > 1 */ 2202 2203 fb_dump_adp_info(DRIVER_NAME, adp, level); 2204 2205#if FB_DEBUG > 1 2206 if (adp->va_flags & V_ADP_MODECHANGE) { 2207 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 2208 if (bios_vmode[i].vi_mode == NA) 2209 continue; 2210 if (get_mode_param(bios_vmode[i].vi_mode) == NULL) 2211 continue; 2212 fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level); 2213 } 2214 } else { 2215 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ 2216 fb_dump_mode_info(DRIVER_NAME, adp, &info, level); 2217 } 2218#endif /* FB_DEBUG > 1 */ 2219 2220 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) 2221 return 0; 2222#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2223 if (video_mode_ptr == NULL) 2224 printf("vga%d: %s: WARNING: video mode switching is not " 2225 "fully supported on this adapter\n", 2226 adp->va_unit, adp->va_name); 2227#endif 2228 if (level <= 0) 2229 return 0; 2230 2231 if (adp->va_type == KD_VGA) { 2232 printf("VGA parameters upon power-up\n"); 2233 dump_buffer(adpstate.regs, sizeof(adpstate.regs)); 2234 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); 2235 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); 2236 } 2237 2238 mp = get_mode_param(adp->va_initial_mode); 2239 if (mp == NULL) /* this shouldn't be happening */ 2240 return 0; 2241 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); 2242 dump_buffer(mp, V_MODE_PARAM_SIZE); 2243 2244 return 0; 2245} 2246 2247#endif /* NVGA > 0 */ 2248