vga_isa.c revision 43105
1/*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * Copyright (c) 1992-1998 S�ren Schmidt 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer as 11 * the first lines of this file unmodified. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $Id: vga_isa.c,v 1.1 1999/01/09 02:44:41 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 (*sw->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, 0, NULL }, 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, 0, NULL }, 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, 0, NULL }, 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, 0, NULL }, 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, 0, NULL }, 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, 0, NULL }, 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); 493#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 494#define COMP_IDENTICAL 0 495#define COMP_SIMILAR 1 496#define COMP_DIFFERENT 2 497static int comp_adpregs(u_char *buf1, u_char *buf2); 498#endif 499static int probe_adapters(void); 500 501#define PARAM_BUFSIZE 6 502static void set_font_mode(video_adapter_t *adp, u_char *buf); 503static void set_normal_mode(video_adapter_t *adp, u_char *buf); 504 505static void dump_buffer(u_char *buf, size_t len); 506 507#define ISMAPPED(pa, width) \ 508 (((pa) <= (u_long)0x1000 - (width)) \ 509 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width))) 510 511#define prologue(adp, flag, err) \ 512 if (!init_done || !((adp)->va_flags & (flag))) \ 513 return (err) 514 515/* a backdoor for the console driver */ 516static int 517vga_configure(int flags) 518{ 519 int i; 520 521 probe_adapters(); 522 for (i = 0; i < biosadapters; ++i) { 523 if (!probe_done(&biosadapter[i])) 524 continue; 525 biosadapter[i].va_flags |= V_ADP_INITIALIZED; 526 if (!config_done(&biosadapter[i])) { 527 if (vid_register(&biosadapter[i]) < 0) 528 continue; 529 biosadapter[i].va_flags |= V_ADP_REGISTERED; 530 } 531 } 532 if (vga_sub_configure != NULL) 533 (*vga_sub_configure)(flags); 534 535 return biosadapters; 536} 537 538/* local subroutines */ 539 540#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 541/* construct the mode parameter map */ 542static void 543map_mode_table(u_char *map[], u_char *table, int max) 544{ 545 int i; 546 547 for(i = 0; i < max; ++i) 548 map[i] = table + i*V_MODE_PARAM_SIZE; 549 for(; i < V_MODE_MAP_SIZE; ++i) 550 map[i] = NULL; 551} 552#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 553 554static void 555clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color) 556{ 557 video_info_t info; 558 int i; 559 560 /* 561 * NOTE: we don't touch `bios_vmode[]' because it is shared 562 * by all adapters. 563 */ 564 for(i = 0; i < max; ++i) { 565 if (vga_get_info(adp, i, &info)) 566 continue; 567 if ((info.vi_flags & V_INFO_COLOR) != color) 568 map[i] = NULL; 569 } 570} 571 572#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 573/* map the non-standard video mode to a known mode number */ 574static int 575map_mode_num(int mode) 576{ 577 static struct { 578 int from; 579 int to; 580 } mode_map[] = { 581 { M_ENH_B80x43, M_ENH_B80x25 }, 582 { M_ENH_C80x43, M_ENH_C80x25 }, 583 { M_VGA_M80x30, M_VGA_M80x25 }, 584 { M_VGA_C80x30, M_VGA_C80x25 }, 585 { M_VGA_M80x50, M_VGA_M80x25 }, 586 { M_VGA_C80x50, M_VGA_C80x25 }, 587 { M_VGA_M80x60, M_VGA_M80x25 }, 588 { M_VGA_C80x60, M_VGA_C80x25 }, 589 { M_VGA_MODEX, M_VGA_CG320 }, 590 }; 591 int i; 592 593 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 594 if (mode_map[i].from == mode) 595 return mode_map[i].to; 596 } 597 return mode; 598} 599#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 600 601/* map a generic video mode to a known mode number */ 602static int 603map_gen_mode_num(int type, int color, int mode) 604{ 605 static struct { 606 int from; 607 int to_color; 608 int to_mono; 609 } mode_map[] = { 610 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, }, 611 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, }, 612 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, }, 613 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, }, 614 }; 615 int i; 616 617 if (mode == M_TEXT_80x25) { 618 switch (type) { 619 620 case KD_VGA: 621 if (color) 622 return M_VGA_C80x25; 623 else 624 return M_VGA_M80x25; 625 break; 626 627 case KD_EGA: 628 if (color) 629 return M_ENH_C80x25; 630 else 631 return M_EGAMONO80x25; 632 break; 633 634 case KD_CGA: 635 return M_C80x25; 636 637 case KD_MONO: 638 case KD_HERCULES: 639 return M_EGAMONO80x25; /* XXX: this name is confusing */ 640 641 default: 642 return -1; 643 } 644 } 645 646 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 647 if (mode_map[i].from == mode) 648 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono); 649 } 650 return mode; 651} 652 653/* turn the BIOS video number into our video mode number */ 654static int 655map_bios_mode_num(int type, int color, int bios_mode) 656{ 657 static int cga_modes[7] = { 658 M_B40x25, M_C40x25, /* 0, 1 */ 659 M_B80x25, M_C80x25, /* 2, 3 */ 660 M_BG320, M_CG320, 661 M_BG640, 662 }; 663 static int ega_modes[17] = { 664 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */ 665 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */ 666 M_BG320, M_CG320, 667 M_BG640, 668 M_EGAMONO80x25, /* 7 */ 669 8, 9, 10, 11, 12, 670 M_CG320_D, 671 M_CG640_E, 672 M_ENHMONOAPA2, /* XXX: video momery > 64K */ 673 M_ENH_CG640, /* XXX: video momery > 64K */ 674 }; 675 static int vga_modes[20] = { 676 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */ 677 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */ 678 M_BG320, M_CG320, 679 M_BG640, 680 M_VGA_M80x25, /* 7 */ 681 8, 9, 10, 11, 12, 682 M_CG320_D, 683 M_CG640_E, 684 M_ENHMONOAPA2, 685 M_ENH_CG640, 686 M_BG640x480, M_CG640x480, 687 M_VGA_CG320, 688 }; 689 690 switch (type) { 691 692 case KD_VGA: 693 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0])) 694 return vga_modes[bios_mode]; 695 else if (color) 696 return M_VGA_C80x25; 697 else 698 return M_VGA_M80x25; 699 break; 700 701 case KD_EGA: 702 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0])) 703 return ega_modes[bios_mode]; 704 else if (color) 705 return M_ENH_C80x25; 706 else 707 return M_EGAMONO80x25; 708 break; 709 710 case KD_CGA: 711 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0])) 712 return cga_modes[bios_mode]; 713 else 714 return M_C80x25; 715 break; 716 717 case KD_MONO: 718 case KD_HERCULES: 719 return M_EGAMONO80x25; /* XXX: this name is confusing */ 720 721 default: 722 break; 723 } 724 return -1; 725} 726 727/* look up a parameter table entry */ 728static u_char 729*get_mode_param(int mode) 730{ 731#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 732 if (mode >= V_MODE_MAP_SIZE) 733 mode = map_mode_num(mode); 734#endif 735 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE)) 736 return mode_map[mode]; 737 else 738 return NULL; 739} 740 741#ifndef VGA_NO_BIOS 742static void 743fill_adapter_param(int code, video_adapter_t *adp) 744{ 745 static struct { 746 int primary; 747 int secondary; 748 } dcc[] = { 749 { DCC_MONO, DCC_EGA40 /* CGA monitor */ }, 750 { DCC_MONO, DCC_EGA80 /* CGA monitor */ }, 751 { DCC_MONO, DCC_EGA80 /* CGA emulation */ }, 752 { DCC_MONO, DCC_EGA80 }, 753 { DCC_CGA40, DCC_EGAMONO }, 754 { DCC_CGA80, DCC_EGAMONO }, 755 { DCC_EGA40 /* CGA monitor */, DCC_MONO}, 756 { DCC_EGA80 /* CGA monitor */, DCC_MONO}, 757 { DCC_EGA80 /* CGA emulation */,DCC_MONO }, 758 { DCC_EGA80, DCC_MONO }, 759 { DCC_EGAMONO, DCC_CGA40 }, 760 { DCC_EGAMONO, DCC_CGA40 }, 761 }; 762 763 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) { 764 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 765 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 766 } else { 767 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary]; 768 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary]; 769 } 770} 771#endif /* VGA_NO_BIOS */ 772 773static int 774verify_adapter(video_adapter_t *adp) 775{ 776 vm_offset_t buf; 777 u_int16_t v; 778 779 buf = BIOS_PADDRTOVADDR(adp->va_window); 780 v = readw(buf); 781 writew(buf, 0xA55A); 782 if (readw(buf) != 0xA55A) 783 return 1; 784 writew(buf, v); 785 786 switch (adp->va_type) { 787 788 case KD_EGA: 789 outb(adp->va_crtc_addr, 7); 790 if (inb(adp->va_crtc_addr) == 7) { 791 adp->va_type = KD_VGA; 792 adp->va_name = "vga"; 793 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; 794 } 795 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER; 796 /* the color adapter may be in the 40x25 mode... XXX */ 797 798#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 799 /* get the BIOS video mode pointer */ 800 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8); 801 p = BIOS_SADDRTOLADDR(p); 802 if (ISMAPPED(p, sizeof(u_int32_t))) { 803 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p); 804 p = BIOS_SADDRTOLADDR(p); 805 if (ISMAPPED(p, V_MODE_PARAM_SIZE)) 806 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p); 807 } 808#endif 809 break; 810 811 case KD_CGA: 812 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; 813 /* may be in the 40x25 mode... XXX */ 814#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 815 /* get the BIOS video mode pointer */ 816 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 817 p = BIOS_SADDRTOLADDR(p); 818 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 819#endif 820 break; 821 822 case KD_MONO: 823#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 824 /* get the BIOS video mode pointer */ 825 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 826 p = BIOS_SADDRTOLADDR(p); 827 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 828#endif 829 break; 830 } 831 832 return 0; 833} 834 835#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 836/* compare two parameter table entries */ 837static int 838comp_adpregs(u_char *buf1, u_char *buf2) 839{ 840 static struct { 841 u_char mask; 842 } params[V_MODE_PARAM_SIZE] = { 843 0xff, 0x00, 0xff, /* COLS, ROWS, POINTS */ 844 0x00, 0x00, /* page length */ 845 0xfe, 0xff, 0xff, 0xff, /* sequencer registers */ 846 0xf3, /* misc register */ 847 0xff, 0xff, 0xff, 0x7f, 0xff, /* CRTC */ 848 0xff, 0xff, 0xff, 0x7f, 0xff, 849 0x00, 0x00, 0x00, 0x00, 0x00, 850 0x00, 0xff, 0x7f, 0xff, 0xff, 851 0x7f, 0xff, 0xff, 0xef, 0xff, 852 0xff, 0xff, 0xff, 0xff, 0xff, /* attribute controller registers */ 853 0xff, 0xff, 0xff, 0xff, 0xff, 854 0xff, 0xff, 0xff, 0xff, 0xff, 855 0xff, 0xff, 0xff, 0xff, 0xf0, 856 0xff, 0xff, 0xff, 0xff, 0xff, /* GDC register */ 857 0xff, 0xff, 0xff, 0xff, 858 }; 859 int identical = TRUE; 860 int i; 861 862 if ((buf1 == NULL) || (buf2 == NULL)) 863 return COMP_DIFFERENT; 864 865 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 866 if (params[i].mask == 0) /* don't care */ 867 continue; 868 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 869 return COMP_DIFFERENT; 870 if (buf1[i] != buf2[i]) 871 identical = FALSE; 872 } 873 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 874} 875#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 876 877/* probe video adapters and return the number of detected adapters */ 878static int 879probe_adapters(void) 880{ 881 video_adapter_t *adp; 882 video_info_t info; 883 int i; 884 885 /* do this test only once */ 886 if (init_done) 887 return biosadapters; 888 init_done = TRUE; 889 890 /* 891 * Locate display adapters. 892 * The AT architecture supports upto two adapters. `syscons' allows 893 * the following combinations of adapters: 894 * 1) MDA + CGA 895 * 2) MDA + EGA/VGA color 896 * 3) CGA + EGA/VGA mono 897 * Note that `syscons' doesn't bother with MCGA as it is only 898 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 899 * thus, they are not running FreeBSD! 900 * When there are two adapaters in the system, one becomes `primary' 901 * and the other `secondary'. The EGA adapter has a set of DIP 902 * switches on board for this information and the EGA BIOS copies 903 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 904 * The VGA BIOS has more sophisticated mechanism and has this 905 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 906 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 907 */ 908 909 /* 910 * Check rtc and BIOS data area. 911 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 912 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 913 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 914 * these bits in BIOSDATA_EQUIPMENT according to the monitor 915 * type detected. 916 */ 917#ifndef VGA_NO_BIOS 918 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 919 case 0: 920 /* EGA/VGA */ 921 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 922 biosadapter); 923 break; 924 case 1: 925 /* CGA 40x25 */ 926 /* FIXME: switch to the 80x25 mode? XXX */ 927 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 928 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 929 break; 930 case 2: 931 /* CGA 80x25 */ 932 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 933 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 934 break; 935 case 3: 936 /* MDA */ 937 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 938 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 939 break; 940 } 941#else 942 /* assume EGA/VGA? XXX */ 943 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 944 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 945#endif /* VGA_NO_BIOS */ 946 947 biosadapters = 0; 948 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 949 ++biosadapters; 950 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 951 biosadapter[V_ADP_SECONDARY].va_mode = 952 biosadapter[V_ADP_SECONDARY].va_initial_mode = 953 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 954 biosadapter[V_ADP_SECONDARY].va_flags 955 & V_ADP_COLOR, 956 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 957 } else { 958 biosadapter[V_ADP_SECONDARY].va_type = -1; 959 } 960 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 961 ++biosadapters; 962 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 963#ifndef VGA_NO_BIOS 964 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 965 readb(BIOS_PADDRTOVADDR(0x449)); 966#else 967 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 968#endif 969 biosadapter[V_ADP_PRIMARY].va_mode = 970 biosadapter[V_ADP_PRIMARY].va_initial_mode = 971 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 972 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 973 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 974 } else { 975 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 976 biosadapter[V_ADP_SECONDARY].va_type = -1; 977 } 978 if (biosadapters == 0) 979 return biosadapters; 980#if 0 981 biosadapter[V_ADP_PRIMARY].va_index = V_ADP_PRIMARY; 982 biosadapter[V_ADP_SECONDARY].va_index = V_ADP_SECONDARY; 983#endif 984 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 985 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 986 987#if 0 /* we don't need these... */ 988 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 989 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 990#endif 991 992#if 0 993 /* 994 * We cannot have two video adapter of the same type; there must be 995 * only one of color or mono adapter, or one each of them. 996 */ 997 if (biosadapters > 1) { 998 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 999 & V_ADP_COLOR)) 1000 /* we have two mono or color adapters!! */ 1001 return (biosadapters = 0); 1002 } 1003#endif 1004 1005 /* 1006 * Ensure a zero start address. This is mainly to recover after 1007 * switching from pcvt using userconfig(). The registers are w/o 1008 * for old hardware so it's too hard to relocate the active screen 1009 * memory. 1010 * This must be done before vga_save_state() for VGA. 1011 */ 1012 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 1013 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1014 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 1015 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1016 1017 /* the video mode parameter table in EGA/VGA BIOS */ 1018 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 1019 * recognized by the video BIOS. 1020 */ 1021 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 1022 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 1023 adp = &biosadapter[V_ADP_PRIMARY]; 1024 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 1025 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 1026 adp = &biosadapter[V_ADP_SECONDARY]; 1027 } else { 1028 adp = NULL; 1029 } 1030 bzero(mode_map, sizeof(mode_map)); 1031 if (adp != NULL) { 1032 if (adp->va_type == KD_VGA) { 1033 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1034#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1035 mode_map[adp->va_initial_mode] = adpstate.regs; 1036 rows_offset = 1; 1037#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1038 if (video_mode_ptr == NULL) { 1039 mode_map[adp->va_initial_mode] = adpstate.regs; 1040 rows_offset = 1; 1041 } else { 1042 /* discard the table if we are not familiar with it... */ 1043 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1044 mp = get_mode_param(adp->va_initial_mode); 1045 if (mp != NULL) 1046 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1047 switch (comp_adpregs(adpstate.regs, mp)) { 1048 case COMP_IDENTICAL: 1049 /* 1050 * OK, this parameter table looks reasonably familiar 1051 * to us... 1052 */ 1053 /* 1054 * This is a kludge for Toshiba DynaBook SS433 1055 * whose BIOS video mode table entry has the actual # 1056 * of rows at the offset 1; BIOSes from other 1057 * manufacturers store the # of rows - 1 there. XXX 1058 */ 1059 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1060 break; 1061 1062 case COMP_SIMILAR: 1063 /* 1064 * Not exactly the same, but similar enough to be 1065 * trusted. However, use the saved register values 1066 * for the initial mode and other modes which are 1067 * based on the initial mode. 1068 */ 1069 mode_map[adp->va_initial_mode] = adpstate.regs; 1070 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1071 adpstate.regs[1] -= rows_offset - 1; 1072 break; 1073 1074 case COMP_DIFFERENT: 1075 default: 1076 /* 1077 * Don't use the paramter table in BIOS. It doesn't 1078 * look familiar to us. Video mode switching is allowed 1079 * only if the new mode is the same as or based on 1080 * the initial mode. 1081 */ 1082 video_mode_ptr = NULL; 1083 bzero(mode_map, sizeof(mode_map)); 1084 mode_map[adp->va_initial_mode] = adpstate.regs; 1085 rows_offset = 1; 1086 break; 1087 } 1088 } 1089#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1090 1091#ifndef VGA_NO_MODE_CHANGE 1092 adp->va_flags |= V_ADP_MODECHANGE; 1093#endif 1094#ifndef VGA_NO_FONT_LOADING 1095 adp->va_flags |= V_ADP_FONT; 1096#endif 1097 } else if (adp->va_type == KD_EGA) { 1098#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1099 rows_offset = 1; 1100#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1101 if (video_mode_ptr == NULL) { 1102 rows_offset = 1; 1103 } else { 1104 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1105 /* XXX how can one validate the EGA table... */ 1106 mp = get_mode_param(adp->va_initial_mode); 1107 if (mp != NULL) { 1108 adp->va_flags |= V_ADP_MODECHANGE; 1109#ifndef VGA_NO_FONT_LOADING 1110 adp->va_flags |= V_ADP_FONT; 1111#endif 1112 rows_offset = 1; 1113 } else { 1114 /* 1115 * This is serious. We will not be able to switch video 1116 * modes at all... 1117 */ 1118 video_mode_ptr = NULL; 1119 bzero(mode_map, sizeof(mode_map)); 1120 rows_offset = 1; 1121 } 1122 } 1123#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1124 } 1125 } 1126 1127 /* remove conflicting modes if we have more than one adapter */ 1128 if (biosadapters > 1) { 1129 for (i = 0; i < biosadapters; ++i) { 1130 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1131 continue; 1132 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1133 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1134 V_INFO_COLOR : 0); 1135 if ((biosadapter[i].va_type == KD_VGA) 1136 || (biosadapter[i].va_type == KD_EGA)) { 1137 biosadapter[i].va_io_base = 1138 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1139 IO_VGA : IO_MDA; 1140 biosadapter[i].va_io_size = 32; 1141 } 1142 } 1143 } 1144 1145 /* buffer address */ 1146 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1147 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1148 biosadapter[V_ADP_PRIMARY].va_mode_flags = info.vi_flags; 1149 biosadapter[V_ADP_PRIMARY].va_window = BIOS_PADDRTOVADDR(info.vi_window); 1150 biosadapter[V_ADP_PRIMARY].va_window_size = info.vi_window_size; 1151 biosadapter[V_ADP_PRIMARY].va_window_gran = info.vi_window_gran; 1152 if (info.vi_buffer_size == 0) { 1153 biosadapter[V_ADP_PRIMARY].va_buffer = 0; 1154 biosadapter[V_ADP_PRIMARY].va_buffer_size = 0; 1155 } else { 1156 biosadapter[V_ADP_PRIMARY].va_buffer 1157 = BIOS_PADDRTOVADDR(info.vi_buffer); 1158 biosadapter[V_ADP_PRIMARY].va_buffer_size = info.vi_buffer_size; 1159 } 1160 1161 if (biosadapters > 1) { 1162 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1163 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1164 biosadapter[V_ADP_SECONDARY].va_mode_flags = info.vi_flags; 1165 biosadapter[V_ADP_SECONDARY].va_window = 1166 BIOS_PADDRTOVADDR(info.vi_window); 1167 biosadapter[V_ADP_SECONDARY].va_window_size = info.vi_window_size; 1168 biosadapter[V_ADP_SECONDARY].va_window_gran = info.vi_window_gran; 1169 if (info.vi_buffer_size == 0) { 1170 biosadapter[V_ADP_SECONDARY].va_buffer = 0; 1171 biosadapter[V_ADP_SECONDARY].va_buffer_size = 0; 1172 } else { 1173 biosadapter[V_ADP_SECONDARY].va_buffer = 1174 BIOS_PADDRTOVADDR(info.vi_buffer); 1175 biosadapter[V_ADP_SECONDARY].va_buffer_size = info.vi_buffer_size; 1176 } 1177 } 1178 1179 /* 1180 * XXX: we should verify the following values for the primary adapter... 1181 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1182 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1183 * ? 0 : V_ADP_COLOR; 1184 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1185 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1186 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1187 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1188 */ 1189 1190 return biosadapters; 1191} 1192 1193/* entry points */ 1194 1195static int 1196vga_nop(void) 1197{ 1198 return 0; 1199} 1200 1201static int 1202vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1203{ 1204 probe_adapters(); 1205 if (unit >= biosadapters) 1206 return ENXIO; 1207 1208 *adpp = &biosadapter[unit]; 1209 1210 return 0; 1211} 1212 1213static int 1214vga_init(int unit, video_adapter_t *adp, int flags) 1215{ 1216 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1217 return ENXIO; 1218 1219 if (!init_done(adp)) { 1220 /* nothing to do really... */ 1221 adp->va_flags |= V_ADP_INITIALIZED; 1222 } 1223 1224 if (!config_done(adp)) { 1225 if (vid_register(adp) < 0) 1226 return ENXIO; 1227 adp->va_flags |= V_ADP_REGISTERED; 1228 } 1229 if (vga_sub_configure != NULL) 1230 (*vga_sub_configure)(0); 1231 1232 return 0; 1233} 1234 1235/* 1236 * get_info(): 1237 * Return the video_info structure of the requested video mode. 1238 * 1239 * all adapters 1240 */ 1241static int 1242vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1243{ 1244 int i; 1245 1246 if (!init_done) 1247 return 1; 1248 1249 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1250#ifndef VGA_NO_MODE_CHANGE 1251 if (adp->va_flags & V_ADP_MODECHANGE) { 1252 /* 1253 * If the parameter table entry for this mode is not found, 1254 * the mode is not supported... 1255 */ 1256 if (get_mode_param(mode) == NULL) 1257 return 1; 1258 } else 1259#endif /* VGA_NO_MODE_CHANGE */ 1260 { 1261 /* 1262 * Even if we don't support video mode switching on this adapter, 1263 * the information on the initial (thus current) video mode 1264 * should be made available. 1265 */ 1266 if (mode != adp->va_initial_mode) 1267 return 1; 1268 } 1269 1270 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1271 if (bios_vmode[i].vi_mode == NA) 1272 continue; 1273 if (mode == bios_vmode[i].vi_mode) { 1274 *info = bios_vmode[i]; 1275 return 0; 1276 } 1277 } 1278 return 1; 1279} 1280 1281/* 1282 * query_mode(): 1283 * Find a video mode matching the requested parameters. 1284 * Fields filled with 0 are considered "don't care" fields and 1285 * match any modes. 1286 * 1287 * all adapters 1288 */ 1289static int 1290vga_query_mode(video_adapter_t *adp, video_info_t *info) 1291{ 1292 video_info_t buf; 1293 int i; 1294 1295 if (!init_done) 1296 return -1; 1297 1298 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1299 if (bios_vmode[i].vi_mode == NA) 1300 continue; 1301 1302 if ((info->vi_width != 0) 1303 && (info->vi_width != bios_vmode[i].vi_width)) 1304 continue; 1305 if ((info->vi_height != 0) 1306 && (info->vi_height != bios_vmode[i].vi_height)) 1307 continue; 1308 if ((info->vi_cwidth != 0) 1309 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1310 continue; 1311 if ((info->vi_cheight != 0) 1312 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1313 continue; 1314 if ((info->vi_depth != 0) 1315 && (info->vi_depth != bios_vmode[i].vi_depth)) 1316 continue; 1317 if ((info->vi_planes != 0) 1318 && (info->vi_planes != bios_vmode[i].vi_planes)) 1319 continue; 1320 /* XXX: should check pixel format, memory model */ 1321 if ((info->vi_flags != 0) 1322 && (info->vi_flags != bios_vmode[i].vi_flags)) 1323 continue; 1324 1325 /* verify if this mode is supported on this adapter */ 1326 if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf)) 1327 continue; 1328 return bios_vmode[i].vi_mode; 1329 } 1330 return -1; 1331} 1332 1333/* 1334 * set_mode(): 1335 * Change the video mode. 1336 * 1337 * EGA/VGA 1338 */ 1339static int 1340vga_set_mode(video_adapter_t *adp, int mode) 1341{ 1342#ifndef VGA_NO_MODE_CHANGE 1343 video_info_t info; 1344 adp_state_t params; 1345 1346 prologue(adp, V_ADP_MODECHANGE, 1); 1347 1348 mode = map_gen_mode_num(adp->va_type, 1349 adp->va_flags & V_ADP_COLOR, mode); 1350 if (vga_get_info(adp, mode, &info)) 1351 return 1; 1352 params.sig = V_STATE_SIG; 1353 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1354 1355 switch (mode) { 1356 case M_VGA_C80x60: case M_VGA_M80x60: 1357 params.regs[2] = 0x08; 1358 params.regs[19] = 0x47; 1359 goto special_480l; 1360 1361 case M_VGA_C80x30: case M_VGA_M80x30: 1362 params.regs[19] = 0x4f; 1363special_480l: 1364 params.regs[9] |= 0xc0; 1365 params.regs[16] = 0x08; 1366 params.regs[17] = 0x3e; 1367 params.regs[26] = 0xea; 1368 params.regs[28] = 0xdf; 1369 params.regs[31] = 0xe7; 1370 params.regs[32] = 0x04; 1371 goto setup_mode; 1372 1373 case M_ENH_C80x43: case M_ENH_B80x43: 1374 params.regs[28] = 87; 1375 goto special_80x50; 1376 1377 case M_VGA_C80x50: case M_VGA_M80x50: 1378special_80x50: 1379 params.regs[2] = 8; 1380 params.regs[19] = 7; 1381 goto setup_mode; 1382 1383 case M_VGA_C40x25: case M_VGA_C80x25: 1384 case M_VGA_M80x25: 1385 case M_B40x25: case M_C40x25: 1386 case M_B80x25: case M_C80x25: 1387 case M_ENH_B40x25: case M_ENH_C40x25: 1388 case M_ENH_B80x25: case M_ENH_C80x25: 1389 case M_EGAMONO80x25: 1390 1391setup_mode: 1392 vga_load_state(adp, ¶ms); 1393 break; 1394 1395 case M_VGA_MODEX: 1396 /* "unchain" the VGA mode */ 1397 params.regs[5-1+0x04] &= 0xf7; 1398 params.regs[5-1+0x04] |= 0x04; 1399 /* turn off doubleword mode */ 1400 params.regs[10+0x14] &= 0xbf; 1401 /* turn off word adressing */ 1402 params.regs[10+0x17] |= 0x40; 1403 /* set logical screen width */ 1404 params.regs[10+0x13] = 80; 1405 /* set 240 lines */ 1406 params.regs[10+0x11] = 0x2c; 1407 params.regs[10+0x06] = 0x0d; 1408 params.regs[10+0x07] = 0x3e; 1409 params.regs[10+0x10] = 0xea; 1410 params.regs[10+0x11] = 0xac; 1411 params.regs[10+0x12] = 0xdf; 1412 params.regs[10+0x15] = 0xe7; 1413 params.regs[10+0x16] = 0x06; 1414 /* set vertical sync polarity to reflect aspect ratio */ 1415 params.regs[9] = 0xe3; 1416 goto setup_grmode; 1417 1418 case M_BG320: case M_CG320: case M_BG640: 1419 case M_CG320_D: case M_CG640_E: 1420 case M_CG640x350: case M_ENH_CG640: 1421 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1422 1423setup_grmode: 1424 vga_load_state(adp, ¶ms); 1425 break; 1426 1427 default: 1428 return 1; 1429 } 1430 1431 adp->va_mode = mode; 1432 adp->va_mode_flags = info.vi_flags; 1433 adp->va_flags &= ~V_ADP_COLOR; 1434 adp->va_flags |= 1435 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 1436 adp->va_crtc_addr = 1437 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 1438 adp->va_window = BIOS_PADDRTOVADDR(info.vi_window); 1439 adp->va_window_size = info.vi_window_size; 1440 adp->va_window_gran = info.vi_window_gran; 1441 if (info.vi_buffer_size == 0) { 1442 adp->va_buffer = 0; 1443 adp->va_buffer_size = 0; 1444 } else { 1445 adp->va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer); 1446 adp->va_buffer_size = info.vi_buffer_size; 1447 } 1448 1449 /* move hardware cursor out of the way */ 1450 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1451 1452 return 0; 1453#else /* VGA_NO_MODE_CHANGE */ 1454 return 1; 1455#endif /* VGA_NO_MODE_CHANGE */ 1456} 1457 1458#ifndef VGA_NO_FONT_LOADING 1459 1460static void 1461set_font_mode(video_adapter_t *adp, u_char *buf) 1462{ 1463 u_char *mp; 1464 int s; 1465 1466 s = splhigh(); 1467 1468 /* save register values */ 1469 if (adp->va_type == KD_VGA) { 1470 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1471 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1472 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1473 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1474 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1475 inb(adp->va_crtc_addr + 6); 1476 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1477 } else /* if (adp->va_type == KD_EGA) */ { 1478 /* 1479 * EGA cannot be read; copy parameters from the mode parameter 1480 * table. 1481 */ 1482 mp = get_mode_param(adp->va_mode); 1483 buf[0] = mp[5 + 0x02 - 1]; 1484 buf[1] = mp[5 + 0x04 - 1]; 1485 buf[2] = mp[55 + 0x04]; 1486 buf[3] = mp[55 + 0x05]; 1487 buf[4] = mp[55 + 0x06]; 1488 buf[5] = mp[35 + 0x10]; 1489 } 1490 1491 /* setup vga for loading fonts */ 1492 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1493 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1494 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1495 outb(ATC, 0x20); /* enable palette */ 1496 1497#if VGA_SLOW_IOACCESS 1498#ifdef VGA_ALT_SEQACCESS 1499 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1500#endif 1501 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1502 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1503#ifdef VGA_ALT_SEQACCESS 1504 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1505#endif 1506 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1507 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1508 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1509#else /* VGA_SLOW_IOACCESS */ 1510#ifdef VGA_ALT_SEQACCESS 1511 outw(TSIDX, 0x0100); 1512#endif 1513 outw(TSIDX, 0x0402); 1514 outw(TSIDX, 0x0704); 1515#ifdef VGA_ALT_SEQACCESS 1516 outw(TSIDX, 0x0300); 1517#endif 1518 outw(GDCIDX, 0x0204); 1519 outw(GDCIDX, 0x0005); 1520 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1521#endif /* VGA_SLOW_IOACCESS */ 1522 1523 splx(s); 1524} 1525 1526static void 1527set_normal_mode(video_adapter_t *adp, u_char *buf) 1528{ 1529 int s; 1530 1531 s = splhigh(); 1532 1533 /* setup vga for normal operation mode again */ 1534 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1535 outb(ATC, 0x10); outb(ATC, buf[5]); 1536 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1537 outb(ATC, 0x20); /* enable palette */ 1538 1539#if VGA_SLOW_IOACCESS 1540#ifdef VGA_ALT_SEQACCESS 1541 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1542#endif 1543 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1544 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1545#ifdef VGA_ALT_SEQACCESS 1546 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1547#endif 1548 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1549 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1550 if (adp->va_crtc_addr == MONO_CRTC) { 1551 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1552 } else { 1553 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1554 } 1555#else /* VGA_SLOW_IOACCESS */ 1556#ifdef VGA_ALT_SEQACCESS 1557 outw(TSIDX, 0x0100); 1558#endif 1559 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1560 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1561#ifdef VGA_ALT_SEQACCESS 1562 outw(TSIDX, 0x0300); 1563#endif 1564 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1565 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1566 if (adp->va_crtc_addr == MONO_CRTC) 1567 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1568 else 1569 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1570#endif /* VGA_SLOW_IOACCESS */ 1571 1572 splx(s); 1573} 1574 1575#endif /* VGA_NO_FONT_LOADING */ 1576 1577/* 1578 * save_font(): 1579 * Read the font data in the requested font page from the video adapter. 1580 * 1581 * EGA/VGA 1582 */ 1583static int 1584vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1585 int ch, int count) 1586{ 1587#ifndef VGA_NO_FONT_LOADING 1588 u_char buf[PARAM_BUFSIZE]; 1589 u_int32_t segment; 1590 int c; 1591#ifdef VGA_ALT_SEQACCESS 1592 int s; 1593 u_char val = 0; 1594#endif 1595 1596 prologue(adp, V_ADP_FONT, 1); 1597 1598 if (fontsize < 14) { 1599 /* FONT_8 */ 1600 fontsize = 8; 1601 } else if (fontsize >= 32) { 1602 fontsize = 32; 1603 } else if (fontsize >= 16) { 1604 /* FONT_16 */ 1605 fontsize = 16; 1606 } else { 1607 /* FONT_14 */ 1608 fontsize = 14; 1609 } 1610 1611 if (page < 0 || page >= 8) 1612 return 1; 1613 segment = FONT_BUF + 0x4000*page; 1614 if (page > 3) 1615 segment -= 0xe000; 1616 1617#ifdef VGA_ALT_SEQACCESS 1618 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1619 s = splhigh(); 1620 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1621 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1622 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1623 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1624 splx(s); 1625 } 1626#endif 1627 1628 set_font_mode(adp, buf); 1629 if (fontsize == 32) { 1630 bcopy_fromio(segment + ch*32, data, fontsize*count); 1631 } else { 1632 for (c = ch; count > 0; ++c, --count) { 1633 bcopy_fromio(segment + c*32, data, fontsize); 1634 data += fontsize; 1635 } 1636 } 1637 set_normal_mode(adp, buf); 1638 1639#ifdef VGA_ALT_SEQACCESS 1640 if (adp->va_type == KD_VGA) { 1641 s = splhigh(); 1642 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1643 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1644 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1645 splx(s); 1646 } 1647#endif 1648 1649 return 0; 1650#else /* VGA_NO_FONT_LOADING */ 1651 return 1; 1652#endif /* VGA_NO_FONT_LOADING */ 1653} 1654 1655/* 1656 * load_font(): 1657 * Set the font data in the requested font page. 1658 * NOTE: it appears that some recent video adapters do not support 1659 * the font page other than 0... XXX 1660 * 1661 * EGA/VGA 1662 */ 1663static int 1664vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1665 int ch, int count) 1666{ 1667#ifndef VGA_NO_FONT_LOADING 1668 u_char buf[PARAM_BUFSIZE]; 1669 u_int32_t segment; 1670 int c; 1671#ifdef VGA_ALT_SEQACCESS 1672 int s; 1673 u_char val = 0; 1674#endif 1675 1676 prologue(adp, V_ADP_FONT, 1); 1677 1678 if (fontsize < 14) { 1679 /* FONT_8 */ 1680 fontsize = 8; 1681 } else if (fontsize >= 32) { 1682 fontsize = 32; 1683 } else if (fontsize >= 16) { 1684 /* FONT_16 */ 1685 fontsize = 16; 1686 } else { 1687 /* FONT_14 */ 1688 fontsize = 14; 1689 } 1690 1691 if (page < 0 || page >= 8) 1692 return 1; 1693 segment = FONT_BUF + 0x4000*page; 1694 if (page > 3) 1695 segment -= 0xe000; 1696 1697#ifdef VGA_ALT_SEQACCESS 1698 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1699 s = splhigh(); 1700 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1701 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1702 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1703 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1704 splx(s); 1705 } 1706#endif 1707 1708 set_font_mode(adp, buf); 1709 if (fontsize == 32) { 1710 bcopy_toio(data, segment + ch*32, fontsize*count); 1711 } else { 1712 for (c = ch; count > 0; ++c, --count) { 1713 bcopy_toio(data, segment + c*32, fontsize); 1714 data += fontsize; 1715 } 1716 } 1717 set_normal_mode(adp, buf); 1718 1719#ifdef VGA_ALT_SEQACCESS 1720 if (adp->va_type == KD_VGA) { 1721 s = splhigh(); 1722 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1723 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1724 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1725 splx(s); 1726 } 1727#endif 1728 1729 return 0; 1730#else /* VGA_NO_FONT_LOADING */ 1731 return 1; 1732#endif /* VGA_NO_FONT_LOADING */ 1733} 1734 1735/* 1736 * show_font(): 1737 * Activate the requested font page. 1738 * NOTE: it appears that some recent video adapters do not support 1739 * the font page other than 0... XXX 1740 * 1741 * EGA/VGA 1742 */ 1743static int 1744vga_show_font(video_adapter_t *adp, int page) 1745{ 1746#ifndef VGA_NO_FONT_LOADING 1747 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1748 int s; 1749 1750 prologue(adp, V_ADP_FONT, 1); 1751 if (page < 0 || page >= 8) 1752 return 1; 1753 1754 s = splhigh(); 1755 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1756 splx(s); 1757 1758 return 0; 1759#else /* VGA_NO_FONT_LOADING */ 1760 return 1; 1761#endif /* VGA_NO_FONT_LOADING */ 1762} 1763 1764/* 1765 * save_palette(): 1766 * Read DAC values. The values have expressed in 8 bits. 1767 * 1768 * VGA 1769 */ 1770static int 1771vga_save_palette(video_adapter_t *adp, u_char *palette) 1772{ 1773 int i; 1774 1775 prologue(adp, V_ADP_PALETTE, 1); 1776 1777 /* 1778 * We store 8 bit values in the palette buffer, while the standard 1779 * VGA has 6 bit DAC . 1780 */ 1781 outb(PALRADR, 0x00); 1782 for (i = 0; i < 256*3; ++i) 1783 palette[i] = inb(PALDATA) << 2; 1784 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1785 return 0; 1786} 1787 1788/* 1789 * load_palette(): 1790 * Set DAC values. 1791 * 1792 * VGA 1793 */ 1794static int 1795vga_load_palette(video_adapter_t *adp, u_char *palette) 1796{ 1797 int i; 1798 1799 prologue(adp, V_ADP_PALETTE, 1); 1800 1801 outb(PIXMASK, 0xff); /* no pixelmask */ 1802 outb(PALWADR, 0x00); 1803 for (i = 0; i < 256*3; ++i) 1804 outb(PALDATA, palette[i] >> 2); 1805 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1806 outb(ATC, 0x20); /* enable palette */ 1807 return 0; 1808} 1809 1810/* 1811 * set_border(): 1812 * Change the border color. 1813 * 1814 * CGA/EGA/VGA 1815 */ 1816static int 1817vga_set_border(video_adapter_t *adp, int color) 1818{ 1819 prologue(adp, V_ADP_BORDER, 1); 1820 1821 switch (adp->va_type) { 1822 case KD_EGA: 1823 case KD_VGA: 1824 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1825 outb(ATC, 0x31); outb(ATC, color & 0xff); 1826 break; 1827 case KD_CGA: 1828 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 1829 break; 1830 case KD_MONO: 1831 case KD_HERCULES: 1832 default: 1833 break; 1834 } 1835 return 0; 1836} 1837 1838/* 1839 * save_state(): 1840 * Read video register values. 1841 * NOTE: this function only reads the standard EGA/VGA registers. 1842 * any extra/extended registers of SVGA adapters are not saved. 1843 * 1844 * VGA 1845 */ 1846static int 1847vga_save_state(video_adapter_t *adp, void *p, size_t size) 1848{ 1849 video_info_t info; 1850 u_char *buf; 1851 int crtc_addr; 1852 int i, j; 1853 int s; 1854 1855 if (size == 0) { 1856 /* return the required buffer size */ 1857 prologue(adp, V_ADP_STATESAVE, 0); 1858 return sizeof(adp_state_t); 1859 } else { 1860 prologue(adp, V_ADP_STATESAVE, 1); 1861 if (size < sizeof(adp_state_t)) 1862 return 1; 1863 } 1864 1865 ((adp_state_t *)p)->sig = V_STATE_SIG; 1866 buf = ((adp_state_t *)p)->regs; 1867 bzero(buf, V_MODE_PARAM_SIZE); 1868 crtc_addr = adp->va_crtc_addr; 1869 1870 s = splhigh(); 1871 1872 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1873 for (i = 0, j = 5; i < 4; i++) { 1874 outb(TSIDX, i + 1); 1875 buf[j++] = inb(TSREG); 1876 } 1877 buf[9] = inb(MISC + 10); /* dot-clock */ 1878 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1879 1880 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 1881 outb(crtc_addr, i); 1882 buf[j++] = inb(crtc_addr + 1); 1883 } 1884 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 1885 inb(crtc_addr + 6); /* reset flip-flop */ 1886 outb(ATC, i); 1887 buf[j++] = inb(ATC + 1); 1888 } 1889 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 1890 outb(GDCIDX, i); 1891 buf[j++] = inb(GDCREG); 1892 } 1893 inb(crtc_addr + 6); /* reset flip-flop */ 1894 outb(ATC, 0x20); /* enable palette */ 1895 1896 splx(s); 1897 1898#if 1 1899 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 1900 if (info.vi_flags & V_INFO_GRAPHICS) { 1901 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 1902 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 1903 } else { 1904 buf[0] = info.vi_width; /* COLS */ 1905 buf[1] = info.vi_height - 1; /* ROWS */ 1906 } 1907 buf[2] = info.vi_cheight; /* POINTS */ 1908 } else { 1909 /* XXX: shouldn't be happening... */ 1910 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 1911 adp->va_unit, adp->va_name); 1912 } 1913#else 1914 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 1915 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 1916 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 1917 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 1918 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 1919#endif 1920 1921 return 0; 1922} 1923 1924/* 1925 * load_state(): 1926 * Set video registers at once. 1927 * NOTE: this function only updates the standard EGA/VGA registers. 1928 * any extra/extended registers of SVGA adapters are not changed. 1929 * 1930 * EGA/VGA 1931 */ 1932static int 1933vga_load_state(video_adapter_t *adp, void *p) 1934{ 1935 u_char *buf; 1936 int crtc_addr; 1937 int s; 1938 int i; 1939 1940 prologue(adp, V_ADP_STATELOAD, 1); 1941 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1942 return 1; 1943 1944 buf = ((adp_state_t *)p)->regs; 1945 crtc_addr = adp->va_crtc_addr; 1946 1947 s = splhigh(); 1948 1949 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1950 for (i = 0; i < 4; ++i) { /* program sequencer */ 1951 outb(TSIDX, i + 1); 1952 outb(TSREG, buf[i + 5]); 1953 } 1954 outb(MISC, buf[9]); /* set dot-clock */ 1955 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1956 outb(crtc_addr, 0x11); 1957 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 1958 for (i = 0; i < 25; ++i) { /* program crtc */ 1959 outb(crtc_addr, i); 1960 outb(crtc_addr + 1, buf[i + 10]); 1961 } 1962 inb(crtc_addr+6); /* reset flip-flop */ 1963 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 1964 outb(ATC, i); 1965 outb(ATC, buf[i + 35]); 1966 } 1967 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 1968 outb(GDCIDX, i); 1969 outb(GDCREG, buf[i + 55]); 1970 } 1971 inb(crtc_addr + 6); /* reset flip-flop */ 1972 outb(ATC, 0x20); /* enable palette */ 1973 1974#ifndef VGA_NO_BIOS 1975 if (adp->va_unit == V_ADP_PRIMARY) { 1976 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 1977 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 1978 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 1979#if 0 1980 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 1981 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 1982#endif 1983 } 1984#endif /* VGA_NO_BIOS */ 1985 1986 splx(s); 1987 return 0; 1988} 1989 1990/* 1991 * set_origin(): 1992 * Change the origin (window mapping) of the banked frame buffer. 1993 */ 1994static int 1995vga_set_origin(video_adapter_t *adp, off_t offset) 1996{ 1997 /* 1998 * The standard video modes do not require window mapping; 1999 * always return error. 2000 */ 2001 return 1; 2002} 2003 2004/* 2005 * read_hw_cursor(): 2006 * Read the position of the hardware text cursor. 2007 * 2008 * all adapters 2009 */ 2010static int 2011vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 2012{ 2013 video_info_t info; 2014 u_int16_t off; 2015 int s; 2016 2017 if (!init_done) 2018 return 1; 2019 2020 (*vidsw[adp->va_index]->get_info)(adp, adp->va_mode, &info); 2021 if (info.vi_flags & V_INFO_GRAPHICS) 2022 return 1; 2023 2024 s = spltty(); 2025 outb(adp->va_crtc_addr, 14); 2026 off = inb(adp->va_crtc_addr + 1); 2027 outb(adp->va_crtc_addr, 15); 2028 off = (off << 8) | inb(adp->va_crtc_addr + 1); 2029 splx(s); 2030 2031 *row = off / info.vi_width; 2032 *col = off % info.vi_width; 2033 2034 return 0; 2035} 2036 2037/* 2038 * set_hw_cursor(): 2039 * Move the hardware text cursor. If col and row are both -1, 2040 * the cursor won't be shown. 2041 * 2042 * all adapters 2043 */ 2044static int 2045vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 2046{ 2047 video_info_t info; 2048 u_int16_t off; 2049 int s; 2050 2051 if (!init_done) 2052 return 1; 2053 2054 if ((col == -1) && (row == -1)) { 2055 off = -1; 2056 } else { 2057 (*vidsw[adp->va_index]->get_info)(adp, adp->va_mode, &info); 2058 if (info.vi_flags & V_INFO_GRAPHICS) 2059 return 1; 2060 off = row*info.vi_width + col; 2061 } 2062 2063 s = spltty(); 2064 outb(adp->va_crtc_addr, 14); 2065 outb(adp->va_crtc_addr + 1, off >> 8); 2066 outb(adp->va_crtc_addr, 15); 2067 outb(adp->va_crtc_addr + 1, off & 0x00ff); 2068 splx(s); 2069 2070 return 0; 2071} 2072 2073/* 2074 * set_hw_cursor_shape(): 2075 * Change the shape of the hardware text cursor. If the height is 2076 * zero or negative, the cursor won't be shown. 2077 * 2078 * all adapters 2079 */ 2080static int 2081vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 2082 int celsize, int blink) 2083{ 2084 int s; 2085 2086 if (!init_done) 2087 return 1; 2088 2089 s = spltty(); 2090 switch (adp->va_type) { 2091 case KD_VGA: 2092 case KD_CGA: 2093 case KD_MONO: 2094 case KD_HERCULES: 2095 default: 2096 if (height <= 0) { 2097 /* make the cursor invisible */ 2098 outb(adp->va_crtc_addr, 10); 2099 outb(adp->va_crtc_addr + 1, 32); 2100 outb(adp->va_crtc_addr, 11); 2101 outb(adp->va_crtc_addr + 1, 0); 2102 } else { 2103 outb(adp->va_crtc_addr, 10); 2104 outb(adp->va_crtc_addr + 1, celsize - base - height); 2105 outb(adp->va_crtc_addr, 11); 2106 outb(adp->va_crtc_addr + 1, celsize - base - 1); 2107 } 2108 break; 2109 case KD_EGA: 2110 if (height <= 0) { 2111 /* make the cursor invisible */ 2112 outb(adp->va_crtc_addr, 10); 2113 outb(adp->va_crtc_addr + 1, celsize); 2114 outb(adp->va_crtc_addr, 11); 2115 outb(adp->va_crtc_addr + 1, 0); 2116 } else { 2117 outb(adp->va_crtc_addr, 10); 2118 outb(adp->va_crtc_addr + 1, celsize - base - height); 2119 outb(adp->va_crtc_addr, 11); 2120 outb(adp->va_crtc_addr + 1, celsize - base); 2121 } 2122 break; 2123 } 2124 splx(s); 2125 2126 return 0; 2127} 2128 2129/* 2130 * mmap(): 2131 * Mmap frame buffer. 2132 * 2133 * all adapters 2134 */ 2135static int 2136vga_mmap(video_adapter_t *adp, vm_offset_t offset) 2137{ 2138 if (offset > 0x20000 - PAGE_SIZE) 2139 return -1; 2140#ifdef __i386__ 2141 return i386_btop((VIDEO_BUF_BASE + offset)); 2142#endif 2143#ifdef __alpha__ 2144 return alpha_btop((VIDEO_BUF_BASE + offset)); 2145#endif 2146} 2147 2148static void 2149dump_buffer(u_char *buf, size_t len) 2150{ 2151 int i; 2152 2153 for(i = 0; i < len;) { 2154 printf("%02x ", buf[i]); 2155 if ((++i % 16) == 0) 2156 printf("\n"); 2157 } 2158} 2159 2160/* 2161 * diag(): 2162 * Print some information about the video adapter and video modes, 2163 * with requested level of details. 2164 * 2165 * all adapters 2166 */ 2167static int 2168vga_diag(video_adapter_t *adp, int level) 2169{ 2170#if FB_DEBUG > 1 2171 video_info_t info; 2172#endif 2173 u_char *mp; 2174 2175 if (!init_done) 2176 return 1; 2177 2178#if FB_DEBUG > 1 2179#ifndef VGA_NO_BIOS 2180 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", 2181 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); 2182 printf("vga: CRTC:0x%x, video option:0x%02x, ", 2183 readw(BIOS_PADDRTOVADDR(0x463)), 2184 readb(BIOS_PADDRTOVADDR(0x487))); 2185 printf("rows:%d, cols:%d, font height:%d\n", 2186 readb(BIOS_PADDRTOVADDR(0x44a)), 2187 readb(BIOS_PADDRTOVADDR(0x484)) + 1, 2188 readb(BIOS_PADDRTOVADDR(0x485))); 2189#endif /* VGA_NO_BIOS */ 2190 printf("vga: param table EGA/VGA:%p", video_mode_ptr); 2191 printf(", CGA/MDA:%p\n", video_mode_ptr2); 2192 printf("vga: rows_offset:%d\n", rows_offset); 2193#endif /* FB_DEBUG > 1 */ 2194 2195 fb_dump_adp_info(DRIVER_NAME, adp, level); 2196 2197#if FB_DEBUG > 1 2198 if (adp->va_flags & V_ADP_MODECHANGE) { 2199 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 2200 if (bios_vmode[i].vi_mode == NA) 2201 continue; 2202 if (get_mode_param(bios_vmode[i].vi_mode) == NULL) 2203 continue; 2204 fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level); 2205 } 2206 } else { 2207 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ 2208 fb_dump_mode_info(DRIVER_NAME, adp, &info, level); 2209 } 2210#endif /* FB_DEBUG > 1 */ 2211 2212 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) 2213 return 0; 2214#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 2215 if (video_mode_ptr == NULL) 2216 printf("vga%d: %s: WARNING: video mode switching is not " 2217 "fully supported on this adapter\n", 2218 adp->va_unit, adp->va_name); 2219#endif 2220 if (level <= 0) 2221 return 0; 2222 2223 if (adp->va_type == KD_VGA) { 2224 printf("VGA parameters upon power-up\n"); 2225 dump_buffer(adpstate.regs, sizeof(adpstate.regs)); 2226 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); 2227 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); 2228 } 2229 2230 mp = get_mode_param(adp->va_initial_mode); 2231 if (mp == NULL) /* this shouldn't be happening */ 2232 return 0; 2233 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); 2234 dump_buffer(mp, V_MODE_PARAM_SIZE); 2235 2236 return 0; 2237} 2238 2239#endif /* NVGA > 0 */ 2240