vga_isa.c revision 43674
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 1.2 1999/02/05 11:52:08 yokota 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 switch (info->vi_depth/info->vi_planes) { 856 case 1: 857 adp->va_line_width = info->vi_width/8; 858 break; 859 case 2: 860 adp->va_line_width = info->vi_width/4; 861 break; 862 case 4: 863 adp->va_line_width = info->vi_width/2; 864 break; 865 case 8: 866 default: /* shouldn't happen */ 867 adp->va_line_width = info->vi_width; 868 break; 869 } 870 } else { 871 adp->va_line_width = info->vi_width; 872 } 873 bcopy(info, &adp->va_info, sizeof(adp->va_info)); 874} 875 876#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 877/* compare two parameter table entries */ 878static int 879comp_adpregs(u_char *buf1, u_char *buf2) 880{ 881 static struct { 882 u_char mask; 883 } params[V_MODE_PARAM_SIZE] = { 884 0xff, 0x00, 0xff, /* COLS, ROWS, POINTS */ 885 0x00, 0x00, /* page length */ 886 0xfe, 0xff, 0xff, 0xff, /* sequencer registers */ 887 0xf3, /* misc register */ 888 0xff, 0xff, 0xff, 0x7f, 0xff, /* CRTC */ 889 0xff, 0xff, 0xff, 0x7f, 0xff, 890 0x00, 0x00, 0x00, 0x00, 0x00, 891 0x00, 0xff, 0x7f, 0xff, 0xff, 892 0x7f, 0xff, 0xff, 0xef, 0xff, 893 0xff, 0xff, 0xff, 0xff, 0xff, /* attribute controller registers */ 894 0xff, 0xff, 0xff, 0xff, 0xff, 895 0xff, 0xff, 0xff, 0xff, 0xff, 896 0xff, 0xff, 0xff, 0xff, 0xf0, 897 0xff, 0xff, 0xff, 0xff, 0xff, /* GDC register */ 898 0xff, 0xff, 0xff, 0xff, 899 }; 900 int identical = TRUE; 901 int i; 902 903 if ((buf1 == NULL) || (buf2 == NULL)) 904 return COMP_DIFFERENT; 905 906 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 907 if (params[i].mask == 0) /* don't care */ 908 continue; 909 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 910 return COMP_DIFFERENT; 911 if (buf1[i] != buf2[i]) 912 identical = FALSE; 913 } 914 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 915} 916#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 917 918/* probe video adapters and return the number of detected adapters */ 919static int 920probe_adapters(void) 921{ 922 video_adapter_t *adp; 923 video_info_t info; 924 int i; 925 926 /* do this test only once */ 927 if (init_done) 928 return biosadapters; 929 init_done = TRUE; 930 931 /* 932 * Locate display adapters. 933 * The AT architecture supports upto two adapters. `syscons' allows 934 * the following combinations of adapters: 935 * 1) MDA + CGA 936 * 2) MDA + EGA/VGA color 937 * 3) CGA + EGA/VGA mono 938 * Note that `syscons' doesn't bother with MCGA as it is only 939 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 940 * thus, they are not running FreeBSD! 941 * When there are two adapaters in the system, one becomes `primary' 942 * and the other `secondary'. The EGA adapter has a set of DIP 943 * switches on board for this information and the EGA BIOS copies 944 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 945 * The VGA BIOS has more sophisticated mechanism and has this 946 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 947 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 948 */ 949 950 /* 951 * Check rtc and BIOS data area. 952 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 953 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 954 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 955 * these bits in BIOSDATA_EQUIPMENT according to the monitor 956 * type detected. 957 */ 958#ifndef VGA_NO_BIOS 959 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 960 case 0: 961 /* EGA/VGA */ 962 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 963 biosadapter); 964 break; 965 case 1: 966 /* CGA 40x25 */ 967 /* FIXME: switch to the 80x25 mode? XXX */ 968 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 969 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 970 break; 971 case 2: 972 /* CGA 80x25 */ 973 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 974 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 975 break; 976 case 3: 977 /* MDA */ 978 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 979 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 980 break; 981 } 982#else 983 /* assume EGA/VGA? XXX */ 984 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 985 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 986#endif /* VGA_NO_BIOS */ 987 988 biosadapters = 0; 989 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 990 ++biosadapters; 991 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 992 biosadapter[V_ADP_SECONDARY].va_mode = 993 biosadapter[V_ADP_SECONDARY].va_initial_mode = 994 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 995 biosadapter[V_ADP_SECONDARY].va_flags 996 & V_ADP_COLOR, 997 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 998 } else { 999 biosadapter[V_ADP_SECONDARY].va_type = -1; 1000 } 1001 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 1002 ++biosadapters; 1003 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 1004#ifndef VGA_NO_BIOS 1005 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 1006 readb(BIOS_PADDRTOVADDR(0x449)); 1007#else 1008 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 1009#endif 1010 biosadapter[V_ADP_PRIMARY].va_mode = 1011 biosadapter[V_ADP_PRIMARY].va_initial_mode = 1012 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 1013 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 1014 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 1015 } else { 1016 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 1017 biosadapter[V_ADP_SECONDARY].va_type = -1; 1018 } 1019 if (biosadapters == 0) 1020 return biosadapters; 1021 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 1022 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 1023 1024#if 0 /* we don't need these... */ 1025 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 1026 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 1027#endif 1028 1029#if 0 1030 /* 1031 * We cannot have two video adapter of the same type; there must be 1032 * only one of color or mono adapter, or one each of them. 1033 */ 1034 if (biosadapters > 1) { 1035 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 1036 & V_ADP_COLOR)) 1037 /* we have two mono or color adapters!! */ 1038 return (biosadapters = 0); 1039 } 1040#endif 1041 1042 /* 1043 * Ensure a zero start address. This is mainly to recover after 1044 * switching from pcvt using userconfig(). The registers are w/o 1045 * for old hardware so it's too hard to relocate the active screen 1046 * memory. 1047 * This must be done before vga_save_state() for VGA. 1048 */ 1049 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 1050 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1051 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 1052 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1053 1054 /* the video mode parameter table in EGA/VGA BIOS */ 1055 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 1056 * recognized by the video BIOS. 1057 */ 1058 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 1059 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 1060 adp = &biosadapter[V_ADP_PRIMARY]; 1061 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 1062 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 1063 adp = &biosadapter[V_ADP_SECONDARY]; 1064 } else { 1065 adp = NULL; 1066 } 1067 bzero(mode_map, sizeof(mode_map)); 1068 if (adp != NULL) { 1069 if (adp->va_type == KD_VGA) { 1070 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1071#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1072 mode_map[adp->va_initial_mode] = adpstate.regs; 1073 rows_offset = 1; 1074#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1075 if (video_mode_ptr == NULL) { 1076 mode_map[adp->va_initial_mode] = adpstate.regs; 1077 rows_offset = 1; 1078 } else { 1079 /* discard the table if we are not familiar with it... */ 1080 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1081 mp = get_mode_param(adp->va_initial_mode); 1082 if (mp != NULL) 1083 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1084 switch (comp_adpregs(adpstate.regs, mp)) { 1085 case COMP_IDENTICAL: 1086 /* 1087 * OK, this parameter table looks reasonably familiar 1088 * to us... 1089 */ 1090 /* 1091 * This is a kludge for Toshiba DynaBook SS433 1092 * whose BIOS video mode table entry has the actual # 1093 * of rows at the offset 1; BIOSes from other 1094 * manufacturers store the # of rows - 1 there. XXX 1095 */ 1096 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1097 break; 1098 1099 case COMP_SIMILAR: 1100 /* 1101 * Not exactly the same, but similar enough to be 1102 * trusted. However, use the saved register values 1103 * for the initial mode and other modes which are 1104 * based on the initial mode. 1105 */ 1106 mode_map[adp->va_initial_mode] = adpstate.regs; 1107 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1108 adpstate.regs[1] -= rows_offset - 1; 1109 break; 1110 1111 case COMP_DIFFERENT: 1112 default: 1113 /* 1114 * Don't use the paramter table in BIOS. It doesn't 1115 * look familiar to us. Video mode switching is allowed 1116 * only if the new mode is the same as or based on 1117 * the initial mode. 1118 */ 1119 video_mode_ptr = NULL; 1120 bzero(mode_map, sizeof(mode_map)); 1121 mode_map[adp->va_initial_mode] = adpstate.regs; 1122 rows_offset = 1; 1123 break; 1124 } 1125 } 1126#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1127 1128#ifndef VGA_NO_MODE_CHANGE 1129 adp->va_flags |= V_ADP_MODECHANGE; 1130#endif 1131#ifndef VGA_NO_FONT_LOADING 1132 adp->va_flags |= V_ADP_FONT; 1133#endif 1134 } else if (adp->va_type == KD_EGA) { 1135#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1136 rows_offset = 1; 1137#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1138 if (video_mode_ptr == NULL) { 1139 rows_offset = 1; 1140 } else { 1141 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1142 /* XXX how can one validate the EGA table... */ 1143 mp = get_mode_param(adp->va_initial_mode); 1144 if (mp != NULL) { 1145 adp->va_flags |= V_ADP_MODECHANGE; 1146#ifndef VGA_NO_FONT_LOADING 1147 adp->va_flags |= V_ADP_FONT; 1148#endif 1149 rows_offset = 1; 1150 } else { 1151 /* 1152 * This is serious. We will not be able to switch video 1153 * modes at all... 1154 */ 1155 video_mode_ptr = NULL; 1156 bzero(mode_map, sizeof(mode_map)); 1157 rows_offset = 1; 1158 } 1159 } 1160#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1161 } 1162 } 1163 1164 /* remove conflicting modes if we have more than one adapter */ 1165 if (biosadapters > 1) { 1166 for (i = 0; i < biosadapters; ++i) { 1167 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1168 continue; 1169 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1170 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1171 V_INFO_COLOR : 0); 1172 if ((biosadapter[i].va_type == KD_VGA) 1173 || (biosadapter[i].va_type == KD_EGA)) { 1174 biosadapter[i].va_io_base = 1175 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1176 IO_VGA : IO_MDA; 1177 biosadapter[i].va_io_size = 32; 1178 } 1179 } 1180 } 1181 1182 /* buffer address */ 1183 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1184 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1185 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); 1186 1187 if (biosadapters > 1) { 1188 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1189 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1190 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); 1191 } 1192 1193 /* 1194 * XXX: we should verify the following values for the primary adapter... 1195 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1196 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1197 * ? 0 : V_ADP_COLOR; 1198 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1199 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1200 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1201 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1202 */ 1203 1204 return biosadapters; 1205} 1206 1207/* entry points */ 1208 1209static int 1210vga_nop(void) 1211{ 1212 return 0; 1213} 1214 1215static int 1216vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1217{ 1218 probe_adapters(); 1219 if (unit >= biosadapters) 1220 return ENXIO; 1221 1222 *adpp = &biosadapter[unit]; 1223 1224 return 0; 1225} 1226 1227static int 1228vga_init(int unit, video_adapter_t *adp, int flags) 1229{ 1230 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1231 return ENXIO; 1232 1233 if (!init_done(adp)) { 1234 /* nothing to do really... */ 1235 adp->va_flags |= V_ADP_INITIALIZED; 1236 } 1237 1238 if (!config_done(adp)) { 1239 if (vid_register(adp) < 0) 1240 return ENXIO; 1241 adp->va_flags |= V_ADP_REGISTERED; 1242 } 1243 if (vga_sub_configure != NULL) 1244 (*vga_sub_configure)(0); 1245 1246 return 0; 1247} 1248 1249/* 1250 * get_info(): 1251 * Return the video_info structure of the requested video mode. 1252 * 1253 * all adapters 1254 */ 1255static int 1256vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1257{ 1258 int i; 1259 1260 if (!init_done) 1261 return 1; 1262 1263 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1264#ifndef VGA_NO_MODE_CHANGE 1265 if (adp->va_flags & V_ADP_MODECHANGE) { 1266 /* 1267 * If the parameter table entry for this mode is not found, 1268 * the mode is not supported... 1269 */ 1270 if (get_mode_param(mode) == NULL) 1271 return 1; 1272 } else 1273#endif /* VGA_NO_MODE_CHANGE */ 1274 { 1275 /* 1276 * Even if we don't support video mode switching on this adapter, 1277 * the information on the initial (thus current) video mode 1278 * should be made available. 1279 */ 1280 if (mode != adp->va_initial_mode) 1281 return 1; 1282 } 1283 1284 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1285 if (bios_vmode[i].vi_mode == NA) 1286 continue; 1287 if (mode == bios_vmode[i].vi_mode) { 1288 *info = bios_vmode[i]; 1289 return 0; 1290 } 1291 } 1292 return 1; 1293} 1294 1295/* 1296 * query_mode(): 1297 * Find a video mode matching the requested parameters. 1298 * Fields filled with 0 are considered "don't care" fields and 1299 * match any modes. 1300 * 1301 * all adapters 1302 */ 1303static int 1304vga_query_mode(video_adapter_t *adp, video_info_t *info) 1305{ 1306 video_info_t buf; 1307 int i; 1308 1309 if (!init_done) 1310 return -1; 1311 1312 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1313 if (bios_vmode[i].vi_mode == NA) 1314 continue; 1315 1316 if ((info->vi_width != 0) 1317 && (info->vi_width != bios_vmode[i].vi_width)) 1318 continue; 1319 if ((info->vi_height != 0) 1320 && (info->vi_height != bios_vmode[i].vi_height)) 1321 continue; 1322 if ((info->vi_cwidth != 0) 1323 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1324 continue; 1325 if ((info->vi_cheight != 0) 1326 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1327 continue; 1328 if ((info->vi_depth != 0) 1329 && (info->vi_depth != bios_vmode[i].vi_depth)) 1330 continue; 1331 if ((info->vi_planes != 0) 1332 && (info->vi_planes != bios_vmode[i].vi_planes)) 1333 continue; 1334 /* XXX: should check pixel format, memory model */ 1335 if ((info->vi_flags != 0) 1336 && (info->vi_flags != bios_vmode[i].vi_flags)) 1337 continue; 1338 1339 /* verify if this mode is supported on this adapter */ 1340 if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf)) 1341 continue; 1342 return bios_vmode[i].vi_mode; 1343 } 1344 return -1; 1345} 1346 1347/* 1348 * set_mode(): 1349 * Change the video mode. 1350 * 1351 * EGA/VGA 1352 */ 1353static int 1354vga_set_mode(video_adapter_t *adp, int mode) 1355{ 1356#ifndef VGA_NO_MODE_CHANGE 1357 video_info_t info; 1358 adp_state_t params; 1359 1360 prologue(adp, V_ADP_MODECHANGE, 1); 1361 1362 mode = map_gen_mode_num(adp->va_type, 1363 adp->va_flags & V_ADP_COLOR, mode); 1364 if (vga_get_info(adp, mode, &info)) 1365 return 1; 1366 params.sig = V_STATE_SIG; 1367 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1368 1369 switch (mode) { 1370 case M_VGA_C80x60: case M_VGA_M80x60: 1371 params.regs[2] = 0x08; 1372 params.regs[19] = 0x47; 1373 goto special_480l; 1374 1375 case M_VGA_C80x30: case M_VGA_M80x30: 1376 params.regs[19] = 0x4f; 1377special_480l: 1378 params.regs[9] |= 0xc0; 1379 params.regs[16] = 0x08; 1380 params.regs[17] = 0x3e; 1381 params.regs[26] = 0xea; 1382 params.regs[28] = 0xdf; 1383 params.regs[31] = 0xe7; 1384 params.regs[32] = 0x04; 1385 goto setup_mode; 1386 1387 case M_ENH_C80x43: case M_ENH_B80x43: 1388 params.regs[28] = 87; 1389 goto special_80x50; 1390 1391 case M_VGA_C80x50: case M_VGA_M80x50: 1392special_80x50: 1393 params.regs[2] = 8; 1394 params.regs[19] = 7; 1395 goto setup_mode; 1396 1397 case M_VGA_C40x25: case M_VGA_C80x25: 1398 case M_VGA_M80x25: 1399 case M_B40x25: case M_C40x25: 1400 case M_B80x25: case M_C80x25: 1401 case M_ENH_B40x25: case M_ENH_C40x25: 1402 case M_ENH_B80x25: case M_ENH_C80x25: 1403 case M_EGAMONO80x25: 1404 1405setup_mode: 1406 vga_load_state(adp, ¶ms); 1407 break; 1408 1409 case M_VGA_MODEX: 1410 /* "unchain" the VGA mode */ 1411 params.regs[5-1+0x04] &= 0xf7; 1412 params.regs[5-1+0x04] |= 0x04; 1413 /* turn off doubleword mode */ 1414 params.regs[10+0x14] &= 0xbf; 1415 /* turn off word adressing */ 1416 params.regs[10+0x17] |= 0x40; 1417 /* set logical screen width */ 1418 params.regs[10+0x13] = 80; 1419 /* set 240 lines */ 1420 params.regs[10+0x11] = 0x2c; 1421 params.regs[10+0x06] = 0x0d; 1422 params.regs[10+0x07] = 0x3e; 1423 params.regs[10+0x10] = 0xea; 1424 params.regs[10+0x11] = 0xac; 1425 params.regs[10+0x12] = 0xdf; 1426 params.regs[10+0x15] = 0xe7; 1427 params.regs[10+0x16] = 0x06; 1428 /* set vertical sync polarity to reflect aspect ratio */ 1429 params.regs[9] = 0xe3; 1430 goto setup_grmode; 1431 1432 case M_BG320: case M_CG320: case M_BG640: 1433 case M_CG320_D: case M_CG640_E: 1434 case M_CG640x350: case M_ENH_CG640: 1435 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1436 1437setup_grmode: 1438 vga_load_state(adp, ¶ms); 1439 break; 1440 1441 default: 1442 return 1; 1443 } 1444 1445 adp->va_mode = mode; 1446 update_adapter_info(adp, &info); 1447 1448 /* move hardware cursor out of the way */ 1449 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1450 1451 return 0; 1452#else /* VGA_NO_MODE_CHANGE */ 1453 return 1; 1454#endif /* VGA_NO_MODE_CHANGE */ 1455} 1456 1457#ifndef VGA_NO_FONT_LOADING 1458 1459static void 1460set_font_mode(video_adapter_t *adp, u_char *buf) 1461{ 1462 u_char *mp; 1463 int s; 1464 1465 s = splhigh(); 1466 1467 /* save register values */ 1468 if (adp->va_type == KD_VGA) { 1469 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1470 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1471 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1472 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1473 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1474 inb(adp->va_crtc_addr + 6); 1475 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1476 } else /* if (adp->va_type == KD_EGA) */ { 1477 /* 1478 * EGA cannot be read; copy parameters from the mode parameter 1479 * table. 1480 */ 1481 mp = get_mode_param(adp->va_mode); 1482 buf[0] = mp[5 + 0x02 - 1]; 1483 buf[1] = mp[5 + 0x04 - 1]; 1484 buf[2] = mp[55 + 0x04]; 1485 buf[3] = mp[55 + 0x05]; 1486 buf[4] = mp[55 + 0x06]; 1487 buf[5] = mp[35 + 0x10]; 1488 } 1489 1490 /* setup vga for loading fonts */ 1491 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1492 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1493 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1494 outb(ATC, 0x20); /* enable palette */ 1495 1496#if VGA_SLOW_IOACCESS 1497#ifdef VGA_ALT_SEQACCESS 1498 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1499#endif 1500 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1501 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1502#ifdef VGA_ALT_SEQACCESS 1503 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1504#endif 1505 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1506 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1507 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1508#else /* VGA_SLOW_IOACCESS */ 1509#ifdef VGA_ALT_SEQACCESS 1510 outw(TSIDX, 0x0100); 1511#endif 1512 outw(TSIDX, 0x0402); 1513 outw(TSIDX, 0x0704); 1514#ifdef VGA_ALT_SEQACCESS 1515 outw(TSIDX, 0x0300); 1516#endif 1517 outw(GDCIDX, 0x0204); 1518 outw(GDCIDX, 0x0005); 1519 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1520#endif /* VGA_SLOW_IOACCESS */ 1521 1522 splx(s); 1523} 1524 1525static void 1526set_normal_mode(video_adapter_t *adp, u_char *buf) 1527{ 1528 int s; 1529 1530 s = splhigh(); 1531 1532 /* setup vga for normal operation mode again */ 1533 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1534 outb(ATC, 0x10); outb(ATC, buf[5]); 1535 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1536 outb(ATC, 0x20); /* enable palette */ 1537 1538#if VGA_SLOW_IOACCESS 1539#ifdef VGA_ALT_SEQACCESS 1540 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1541#endif 1542 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1543 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1544#ifdef VGA_ALT_SEQACCESS 1545 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1546#endif 1547 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1548 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1549 if (adp->va_crtc_addr == MONO_CRTC) { 1550 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1551 } else { 1552 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1553 } 1554#else /* VGA_SLOW_IOACCESS */ 1555#ifdef VGA_ALT_SEQACCESS 1556 outw(TSIDX, 0x0100); 1557#endif 1558 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1559 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1560#ifdef VGA_ALT_SEQACCESS 1561 outw(TSIDX, 0x0300); 1562#endif 1563 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1564 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1565 if (adp->va_crtc_addr == MONO_CRTC) 1566 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1567 else 1568 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1569#endif /* VGA_SLOW_IOACCESS */ 1570 1571 splx(s); 1572} 1573 1574#endif /* VGA_NO_FONT_LOADING */ 1575 1576/* 1577 * save_font(): 1578 * Read the font data in the requested font page from the video adapter. 1579 * 1580 * EGA/VGA 1581 */ 1582static int 1583vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1584 int ch, int count) 1585{ 1586#ifndef VGA_NO_FONT_LOADING 1587 u_char buf[PARAM_BUFSIZE]; 1588 u_int32_t segment; 1589 int c; 1590#ifdef VGA_ALT_SEQACCESS 1591 int s; 1592 u_char val = 0; 1593#endif 1594 1595 prologue(adp, V_ADP_FONT, 1); 1596 1597 if (fontsize < 14) { 1598 /* FONT_8 */ 1599 fontsize = 8; 1600 } else if (fontsize >= 32) { 1601 fontsize = 32; 1602 } else if (fontsize >= 16) { 1603 /* FONT_16 */ 1604 fontsize = 16; 1605 } else { 1606 /* FONT_14 */ 1607 fontsize = 14; 1608 } 1609 1610 if (page < 0 || page >= 8) 1611 return 1; 1612 segment = FONT_BUF + 0x4000*page; 1613 if (page > 3) 1614 segment -= 0xe000; 1615 1616#ifdef VGA_ALT_SEQACCESS 1617 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1618 s = splhigh(); 1619 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1620 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1621 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1622 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1623 splx(s); 1624 } 1625#endif 1626 1627 set_font_mode(adp, buf); 1628 if (fontsize == 32) { 1629 bcopy_fromio(segment + ch*32, data, fontsize*count); 1630 } else { 1631 for (c = ch; count > 0; ++c, --count) { 1632 bcopy_fromio(segment + c*32, data, fontsize); 1633 data += fontsize; 1634 } 1635 } 1636 set_normal_mode(adp, buf); 1637 1638#ifdef VGA_ALT_SEQACCESS 1639 if (adp->va_type == KD_VGA) { 1640 s = splhigh(); 1641 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1642 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1643 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1644 splx(s); 1645 } 1646#endif 1647 1648 return 0; 1649#else /* VGA_NO_FONT_LOADING */ 1650 return 1; 1651#endif /* VGA_NO_FONT_LOADING */ 1652} 1653 1654/* 1655 * load_font(): 1656 * Set the font data in the requested font page. 1657 * NOTE: it appears that some recent video adapters do not support 1658 * the font page other than 0... XXX 1659 * 1660 * EGA/VGA 1661 */ 1662static int 1663vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1664 int ch, int count) 1665{ 1666#ifndef VGA_NO_FONT_LOADING 1667 u_char buf[PARAM_BUFSIZE]; 1668 u_int32_t segment; 1669 int c; 1670#ifdef VGA_ALT_SEQACCESS 1671 int s; 1672 u_char val = 0; 1673#endif 1674 1675 prologue(adp, V_ADP_FONT, 1); 1676 1677 if (fontsize < 14) { 1678 /* FONT_8 */ 1679 fontsize = 8; 1680 } else if (fontsize >= 32) { 1681 fontsize = 32; 1682 } else if (fontsize >= 16) { 1683 /* FONT_16 */ 1684 fontsize = 16; 1685 } else { 1686 /* FONT_14 */ 1687 fontsize = 14; 1688 } 1689 1690 if (page < 0 || page >= 8) 1691 return 1; 1692 segment = FONT_BUF + 0x4000*page; 1693 if (page > 3) 1694 segment -= 0xe000; 1695 1696#ifdef VGA_ALT_SEQACCESS 1697 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1698 s = splhigh(); 1699 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1700 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1701 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1702 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1703 splx(s); 1704 } 1705#endif 1706 1707 set_font_mode(adp, buf); 1708 if (fontsize == 32) { 1709 bcopy_toio(data, segment + ch*32, fontsize*count); 1710 } else { 1711 for (c = ch; count > 0; ++c, --count) { 1712 bcopy_toio(data, segment + c*32, fontsize); 1713 data += fontsize; 1714 } 1715 } 1716 set_normal_mode(adp, buf); 1717 1718#ifdef VGA_ALT_SEQACCESS 1719 if (adp->va_type == KD_VGA) { 1720 s = splhigh(); 1721 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1722 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1723 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1724 splx(s); 1725 } 1726#endif 1727 1728 return 0; 1729#else /* VGA_NO_FONT_LOADING */ 1730 return 1; 1731#endif /* VGA_NO_FONT_LOADING */ 1732} 1733 1734/* 1735 * show_font(): 1736 * Activate the requested font page. 1737 * NOTE: it appears that some recent video adapters do not support 1738 * the font page other than 0... XXX 1739 * 1740 * EGA/VGA 1741 */ 1742static int 1743vga_show_font(video_adapter_t *adp, int page) 1744{ 1745#ifndef VGA_NO_FONT_LOADING 1746 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1747 int s; 1748 1749 prologue(adp, V_ADP_FONT, 1); 1750 if (page < 0 || page >= 8) 1751 return 1; 1752 1753 s = splhigh(); 1754 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1755 splx(s); 1756 1757 return 0; 1758#else /* VGA_NO_FONT_LOADING */ 1759 return 1; 1760#endif /* VGA_NO_FONT_LOADING */ 1761} 1762 1763/* 1764 * save_palette(): 1765 * Read DAC values. The values have expressed in 8 bits. 1766 * 1767 * VGA 1768 */ 1769static int 1770vga_save_palette(video_adapter_t *adp, u_char *palette) 1771{ 1772 int i; 1773 1774 prologue(adp, V_ADP_PALETTE, 1); 1775 1776 /* 1777 * We store 8 bit values in the palette buffer, while the standard 1778 * VGA has 6 bit DAC . 1779 */ 1780 outb(PALRADR, 0x00); 1781 for (i = 0; i < 256*3; ++i) 1782 palette[i] = inb(PALDATA) << 2; 1783 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1784 return 0; 1785} 1786 1787/* 1788 * load_palette(): 1789 * Set DAC values. 1790 * 1791 * VGA 1792 */ 1793static int 1794vga_load_palette(video_adapter_t *adp, u_char *palette) 1795{ 1796 int i; 1797 1798 prologue(adp, V_ADP_PALETTE, 1); 1799 1800 outb(PIXMASK, 0xff); /* no pixelmask */ 1801 outb(PALWADR, 0x00); 1802 for (i = 0; i < 256*3; ++i) 1803 outb(PALDATA, palette[i] >> 2); 1804 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1805 outb(ATC, 0x20); /* enable palette */ 1806 return 0; 1807} 1808 1809/* 1810 * set_border(): 1811 * Change the border color. 1812 * 1813 * CGA/EGA/VGA 1814 */ 1815static int 1816vga_set_border(video_adapter_t *adp, int color) 1817{ 1818 prologue(adp, V_ADP_BORDER, 1); 1819 1820 switch (adp->va_type) { 1821 case KD_EGA: 1822 case KD_VGA: 1823 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1824 outb(ATC, 0x31); outb(ATC, color & 0xff); 1825 break; 1826 case KD_CGA: 1827 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 1828 break; 1829 case KD_MONO: 1830 case KD_HERCULES: 1831 default: 1832 break; 1833 } 1834 return 0; 1835} 1836 1837/* 1838 * save_state(): 1839 * Read video register values. 1840 * NOTE: this function only reads the standard EGA/VGA registers. 1841 * any extra/extended registers of SVGA adapters are not saved. 1842 * 1843 * VGA 1844 */ 1845static int 1846vga_save_state(video_adapter_t *adp, void *p, size_t size) 1847{ 1848 video_info_t info; 1849 u_char *buf; 1850 int crtc_addr; 1851 int i, j; 1852 int s; 1853 1854 if (size == 0) { 1855 /* return the required buffer size */ 1856 prologue(adp, V_ADP_STATESAVE, 0); 1857 return sizeof(adp_state_t); 1858 } else { 1859 prologue(adp, V_ADP_STATESAVE, 1); 1860 if (size < sizeof(adp_state_t)) 1861 return 1; 1862 } 1863 1864 ((adp_state_t *)p)->sig = V_STATE_SIG; 1865 buf = ((adp_state_t *)p)->regs; 1866 bzero(buf, V_MODE_PARAM_SIZE); 1867 crtc_addr = adp->va_crtc_addr; 1868 1869 s = splhigh(); 1870 1871 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1872 for (i = 0, j = 5; i < 4; i++) { 1873 outb(TSIDX, i + 1); 1874 buf[j++] = inb(TSREG); 1875 } 1876 buf[9] = inb(MISC + 10); /* dot-clock */ 1877 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1878 1879 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 1880 outb(crtc_addr, i); 1881 buf[j++] = inb(crtc_addr + 1); 1882 } 1883 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 1884 inb(crtc_addr + 6); /* reset flip-flop */ 1885 outb(ATC, i); 1886 buf[j++] = inb(ATC + 1); 1887 } 1888 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 1889 outb(GDCIDX, i); 1890 buf[j++] = inb(GDCREG); 1891 } 1892 inb(crtc_addr + 6); /* reset flip-flop */ 1893 outb(ATC, 0x20); /* enable palette */ 1894 1895 splx(s); 1896 1897#if 1 1898 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 1899 if (info.vi_flags & V_INFO_GRAPHICS) { 1900 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 1901 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 1902 } else { 1903 buf[0] = info.vi_width; /* COLS */ 1904 buf[1] = info.vi_height - 1; /* ROWS */ 1905 } 1906 buf[2] = info.vi_cheight; /* POINTS */ 1907 } else { 1908 /* XXX: shouldn't be happening... */ 1909 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 1910 adp->va_unit, adp->va_name); 1911 } 1912#else 1913 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 1914 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 1915 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 1916 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 1917 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 1918#endif 1919 1920 return 0; 1921} 1922 1923/* 1924 * load_state(): 1925 * Set video registers at once. 1926 * NOTE: this function only updates the standard EGA/VGA registers. 1927 * any extra/extended registers of SVGA adapters are not changed. 1928 * 1929 * EGA/VGA 1930 */ 1931static int 1932vga_load_state(video_adapter_t *adp, void *p) 1933{ 1934 u_char *buf; 1935 int crtc_addr; 1936 int s; 1937 int i; 1938 1939 prologue(adp, V_ADP_STATELOAD, 1); 1940 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1941 return 1; 1942 1943 buf = ((adp_state_t *)p)->regs; 1944 crtc_addr = adp->va_crtc_addr; 1945 1946 s = splhigh(); 1947 1948 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1949 for (i = 0; i < 4; ++i) { /* program sequencer */ 1950 outb(TSIDX, i + 1); 1951 outb(TSREG, buf[i + 5]); 1952 } 1953 outb(MISC, buf[9]); /* set dot-clock */ 1954 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1955 outb(crtc_addr, 0x11); 1956 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 1957 for (i = 0; i < 25; ++i) { /* program crtc */ 1958 outb(crtc_addr, i); 1959 outb(crtc_addr + 1, buf[i + 10]); 1960 } 1961 inb(crtc_addr+6); /* reset flip-flop */ 1962 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 1963 outb(ATC, i); 1964 outb(ATC, buf[i + 35]); 1965 } 1966 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 1967 outb(GDCIDX, i); 1968 outb(GDCREG, buf[i + 55]); 1969 } 1970 inb(crtc_addr + 6); /* reset flip-flop */ 1971 outb(ATC, 0x20); /* enable palette */ 1972 1973#ifndef VGA_NO_BIOS 1974 if (adp->va_unit == V_ADP_PRIMARY) { 1975 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 1976 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 1977 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 1978#if 0 1979 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 1980 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 1981#endif 1982 } 1983#endif /* VGA_NO_BIOS */ 1984 1985 splx(s); 1986 return 0; 1987} 1988 1989/* 1990 * set_origin(): 1991 * Change the origin (window mapping) of the banked frame buffer. 1992 */ 1993static int 1994vga_set_origin(video_adapter_t *adp, off_t offset) 1995{ 1996 /* 1997 * The standard video modes do not require window mapping; 1998 * always return error. 1999 */ 2000 return 1; 2001} 2002 2003/* 2004 * read_hw_cursor(): 2005 * Read the position of the hardware text cursor. 2006 * 2007 * all adapters 2008 */ 2009static int 2010vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 2011{ 2012 u_int16_t off; 2013 int s; 2014 2015 if (!init_done) 2016 return 1; 2017 2018 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2019 return 1; 2020 2021 s = spltty(); 2022 outb(adp->va_crtc_addr, 14); 2023 off = inb(adp->va_crtc_addr + 1); 2024 outb(adp->va_crtc_addr, 15); 2025 off = (off << 8) | inb(adp->va_crtc_addr + 1); 2026 splx(s); 2027 2028 *row = off / adp->va_info.vi_width; 2029 *col = off % adp->va_info.vi_width; 2030 2031 return 0; 2032} 2033 2034/* 2035 * set_hw_cursor(): 2036 * Move the hardware text cursor. If col and row are both -1, 2037 * the cursor won't be shown. 2038 * 2039 * all adapters 2040 */ 2041static int 2042vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 2043{ 2044 u_int16_t off; 2045 int s; 2046 2047 if (!init_done) 2048 return 1; 2049 2050 if ((col == -1) && (row == -1)) { 2051 off = -1; 2052 } else { 2053 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2054 return 1; 2055 off = row*adp->va_info.vi_width + col; 2056 } 2057 2058 s = spltty(); 2059 outb(adp->va_crtc_addr, 14); 2060 outb(adp->va_crtc_addr + 1, off >> 8); 2061 outb(adp->va_crtc_addr, 15); 2062 outb(adp->va_crtc_addr + 1, off & 0x00ff); 2063 splx(s); 2064 2065 return 0; 2066} 2067 2068/* 2069 * set_hw_cursor_shape(): 2070 * Change the shape of the hardware text cursor. If the height is 2071 * zero or negative, the cursor won't be shown. 2072 * 2073 * all adapters 2074 */ 2075static int 2076vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 2077 int celsize, int blink) 2078{ 2079 int s; 2080 2081 if (!init_done) 2082 return 1; 2083 2084 s = spltty(); 2085 switch (adp->va_type) { 2086 case KD_VGA: 2087 case KD_CGA: 2088 case KD_MONO: 2089 case KD_HERCULES: 2090 default: 2091 if (height <= 0) { 2092 /* make the cursor invisible */ 2093 outb(adp->va_crtc_addr, 10); 2094 outb(adp->va_crtc_addr + 1, 32); 2095 outb(adp->va_crtc_addr, 11); 2096 outb(adp->va_crtc_addr + 1, 0); 2097 } else { 2098 outb(adp->va_crtc_addr, 10); 2099 outb(adp->va_crtc_addr + 1, celsize - base - height); 2100 outb(adp->va_crtc_addr, 11); 2101 outb(adp->va_crtc_addr + 1, celsize - base - 1); 2102 } 2103 break; 2104 case KD_EGA: 2105 if (height <= 0) { 2106 /* make the cursor invisible */ 2107 outb(adp->va_crtc_addr, 10); 2108 outb(adp->va_crtc_addr + 1, celsize); 2109 outb(adp->va_crtc_addr, 11); 2110 outb(adp->va_crtc_addr + 1, 0); 2111 } else { 2112 outb(adp->va_crtc_addr, 10); 2113 outb(adp->va_crtc_addr + 1, celsize - base - height); 2114 outb(adp->va_crtc_addr, 11); 2115 outb(adp->va_crtc_addr + 1, celsize - base); 2116 } 2117 break; 2118 } 2119 splx(s); 2120 2121 return 0; 2122} 2123 2124/* 2125 * mmap(): 2126 * Mmap frame buffer. 2127 * 2128 * all adapters 2129 */ 2130static int 2131vga_mmap(video_adapter_t *adp, vm_offset_t offset) 2132{ 2133 if (offset > 0x20000 - PAGE_SIZE) 2134 return -1; 2135#ifdef __i386__ 2136 return i386_btop((VIDEO_BUF_BASE + offset)); 2137#endif 2138#ifdef __alpha__ 2139 return alpha_btop((VIDEO_BUF_BASE + offset)); 2140#endif 2141} 2142 2143static void 2144dump_buffer(u_char *buf, size_t len) 2145{ 2146 int i; 2147 2148 for(i = 0; i < len;) { 2149 printf("%02x ", buf[i]); 2150 if ((++i % 16) == 0) 2151 printf("\n"); 2152 } 2153} 2154 2155/* 2156 * diag(): 2157 * Print some information about the video adapter and video modes, 2158 * with requested level of details. 2159 * 2160 * all adapters 2161 */ 2162static int 2163vga_diag(video_adapter_t *adp, int level) 2164{ 2165#if FB_DEBUG > 1 2166 video_info_t info; 2167#endif 2168 u_char *mp; 2169 2170 if (!init_done) 2171 return 1; 2172 2173#if FB_DEBUG > 1 2174#ifndef VGA_NO_BIOS 2175 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", 2176 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); 2177 printf("vga: CRTC:0x%x, video option:0x%02x, ", 2178 readw(BIOS_PADDRTOVADDR(0x463)), 2179 readb(BIOS_PADDRTOVADDR(0x487))); 2180 printf("rows:%d, cols:%d, font height:%d\n", 2181 readb(BIOS_PADDRTOVADDR(0x44a)), 2182 readb(BIOS_PADDRTOVADDR(0x484)) + 1, 2183 readb(BIOS_PADDRTOVADDR(0x485))); 2184#endif /* VGA_NO_BIOS */ 2185 printf("vga: param table EGA/VGA:%p", video_mode_ptr); 2186 printf(", CGA/MDA:%p\n", video_mode_ptr2); 2187 printf("vga: rows_offset:%d\n", rows_offset); 2188#endif /* FB_DEBUG > 1 */ 2189 2190 fb_dump_adp_info(DRIVER_NAME, adp, level); 2191 2192#if FB_DEBUG > 1 2193 if (adp->va_flags & V_ADP_MODECHANGE) { 2194 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 2195 if (bios_vmode[i].vi_mode == NA) 2196 continue; 2197 if (get_mode_param(bios_vmode[i].vi_mode) == NULL) 2198 continue; 2199 fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level); 2200 } 2201 } else { 2202 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ 2203 fb_dump_mode_info(DRIVER_NAME, adp, &info, level); 2204 } 2205#endif /* FB_DEBUG > 1 */ 2206 2207 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) 2208 return 0; 2209#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2210 if (video_mode_ptr == NULL) 2211 printf("vga%d: %s: WARNING: video mode switching is not " 2212 "fully supported on this adapter\n", 2213 adp->va_unit, adp->va_name); 2214#endif 2215 if (level <= 0) 2216 return 0; 2217 2218 if (adp->va_type == KD_VGA) { 2219 printf("VGA parameters upon power-up\n"); 2220 dump_buffer(adpstate.regs, sizeof(adpstate.regs)); 2221 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); 2222 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); 2223 } 2224 2225 mp = get_mode_param(adp->va_initial_mode); 2226 if (mp == NULL) /* this shouldn't be happening */ 2227 return 0; 2228 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); 2229 dump_buffer(mp, V_MODE_PARAM_SIZE); 2230 2231 return 0; 2232} 2233 2234#endif /* NVGA > 0 */ 2235