vga_isa.c revision 45720
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 1.3 1999/02/05 12:58:32 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#if 1 56#include <isa/isareg.h> 57#include <isa/isavar.h> 58#else 59#include <i386/isa/isa.h> 60#include <i386/isa/isa_device.h> 61#endif 62 63#define DRIVER_NAME "vga" 64 65/* cdev driver declaration */ 66 67#define ISAVGA_UNIT(dev) minor(dev) 68#define ISAVGA_MKMINOR(unit) (unit) 69 70typedef struct isavga_softc { 71 video_adapter_t *adp; 72} isavga_softc_t; 73 74#if 1 75 76#define ISAVGA_SOFTC(unit) \ 77 ((isavga_softc_t *)devclass_get_softc(isavga_devclass, unit)) 78 79devclass_t isavga_devclass; 80 81static int isavga_probe(device_t dev); 82static int isavga_attach(device_t dev); 83 84static device_method_t isavga_methods[] = { 85 DEVMETHOD(device_probe, isavga_probe), 86 DEVMETHOD(device_attach, isavga_attach), 87 { 0, 0 } 88}; 89 90static driver_t isavga_driver = { 91 DRIVER_NAME, 92 isavga_methods, 93 DRIVER_TYPE_TTY, 94 sizeof(isavga_softc_t), 95}; 96 97DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0); 98 99#else /* __i386__ */ 100 101#define ISAVGA_SOFTC(unit) (isavga_softc[unit]) 102 103static isavga_softc_t *isavga_softc[NVGA]; 104 105static int isavga_probe(struct isa_device *dev); 106static int isavga_attach(struct isa_device *dev); 107 108struct isa_driver vgadriver = { 109 isavga_probe, 110 isavga_attach, 111 DRIVER_NAME, 112 0, 113}; 114 115#endif /* __i386__ */ 116 117static int isavga_probe_unit(int unit, isavga_softc_t *sc, 118 int flags); 119static int isavga_attach_unit(int unit, isavga_softc_t *sc, 120 int flags); 121 122#ifdef FB_INSTALL_CDEV 123 124static d_open_t isavgaopen; 125static d_close_t isavgaclose; 126static d_read_t isavgaread; 127static d_ioctl_t isavgaioctl; 128 129static struct cdevsw vga_cdevsw = { 130 isavgaopen, isavgaclose, noread, nowrite, /* ?? */ 131 isavgaioctl, nostop, nullreset, nodevtotty, 132 seltrue, nommap, NULL, DRIVER_NAME, 133 NULL, -1, nodump, nopsize, 134}; 135 136#endif /* FB_INSTALL_CDEV */ 137 138#if 1 139 140static int 141isavga_probe(device_t dev) 142{ 143 isavga_softc_t *sc; 144 145 device_set_desc(dev, "Generic ISA VGA"); 146 sc = device_get_softc(dev); 147 return isavga_probe_unit(device_get_unit(dev), sc, isa_get_flags(dev)); 148} 149 150static int 151isavga_attach(device_t dev) 152{ 153 isavga_softc_t *sc; 154 155 sc = device_get_softc(dev); 156 return isavga_attach_unit(device_get_unit(dev), sc, isa_get_flags(dev)); 157} 158 159#else /* __i386__ */ 160 161static int 162isavga_probe(struct isa_device *dev) 163{ 164 isavga_softc_t *sc; 165 int error; 166 167 if (dev->id_unit >= sizeof(isavga_softc)/sizeof(isavga_softc[0])) 168 return 0; 169 sc = isavga_softc[dev->id_unit] 170 = malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT); 171 if (sc == NULL) 172 return 0; 173 174 error = isavga_probe_unit(dev->id_unit, sc, dev->id_flags); 175 if (error) { 176 isavga_softc[dev->id_unit] = NULL; 177 free(sc, M_DEVBUF); 178 return 0; 179 } 180 181 dev->id_iobase = sc->adp->va_io_base; 182 dev->id_maddr = (caddr_t)BIOS_PADDRTOVADDR(sc->adp->va_mem_base); 183 dev->id_msize = sc->adp->va_mem_size; 184 185 return sc->adp->va_io_size; 186} 187 188static int 189isavga_attach(struct isa_device *dev) 190{ 191 isavga_softc_t *sc; 192 193 if (dev->id_unit >= sizeof(isavga_softc)/sizeof(isavga_softc[0])) 194 return 0; 195 sc = isavga_softc[dev->id_unit]; 196 if (sc == NULL) 197 return 0; 198 199 return ((isavga_attach_unit(dev->id_unit, sc, dev->id_flags)) ? 0 : 1); 200} 201 202#endif /* __i386__ */ 203 204static int 205isavga_probe_unit(int unit, isavga_softc_t *sc, int flags) 206{ 207 video_switch_t *sw; 208 209 bzero(sc, sizeof(*sc)); 210 sw = vid_get_switch(DRIVER_NAME); 211 if (sw == NULL) 212 return 0; 213 return (*sw->probe)(unit, &sc->adp, NULL, flags); 214} 215 216static int 217isavga_attach_unit(int unit, isavga_softc_t *sc, int flags) 218{ 219 video_switch_t *sw; 220 int error; 221 222 sw = vid_get_switch(DRIVER_NAME); 223 if (sw == NULL) 224 return ENXIO; 225 226 error = (*sw->init)(unit, sc->adp, flags); 227 if (error) 228 return ENXIO; 229 230#ifdef FB_INSTALL_CDEV 231 /* attach a virtual frame buffer device */ 232 error = fb_attach(makedev(0, ISAVGA_MKMINOR(unit)), scp->adp, 233 &vga_cdevsw); 234 if (error) 235 return error; 236#endif /* FB_INSTALL_CDEV */ 237 238 if (bootverbose) 239 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); 240 241 return 0; 242} 243 244/* LOW-LEVEL */ 245 246#include <machine/clock.h> 247#include <machine/pc/vesa.h> 248 249#define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED) 250#define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED) 251#define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED) 252 253/* for compatibility with old kernel options */ 254#ifdef SC_ALT_SEQACCESS 255#undef SC_ALT_SEQACCESS 256#undef VGA_ALT_SEQACCESS 257#define VGA_ALT_SEQACCESS 1 258#endif 259 260#ifdef SLOW_VGA 261#undef SLOW_VGA 262#undef VGA_SLOW_IOACCESS 263#define VGA_SLOW_IOACCESS 1 264#endif 265 266/* architecture dependent option */ 267#ifdef __alpha__ 268#define VGA_NO_BIOS 1 269#endif 270 271/* this should really be in `rtc.h' */ 272#define RTC_EQUIPMENT 0x14 273 274/* various sizes */ 275#define V_MODE_MAP_SIZE (M_VGA_CG320 + 1) 276#define V_MODE_PARAM_SIZE 64 277 278/* video adapter state buffer */ 279struct adp_state { 280 int sig; 281#define V_STATE_SIG 0x736f6962 282 u_char regs[V_MODE_PARAM_SIZE]; 283}; 284typedef struct adp_state adp_state_t; 285 286/* video adapter information */ 287#define DCC_MONO 0 288#define DCC_CGA40 1 289#define DCC_CGA80 2 290#define DCC_EGAMONO 3 291#define DCC_EGA40 4 292#define DCC_EGA80 5 293 294/* 295 * NOTE: `va_window' should have a virtual address, but is initialized 296 * with a physical address in the following table, as verify_adapter() 297 * will perform address conversion at run-time. 298 */ 299static video_adapter_t adapter_init_value[] = { 300 /* DCC_MONO */ 301 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC, 302 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 303 0, 0, 0, 7, 0, }, 304 /* DCC_CGA40 */ 305 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 306 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 307 0, 0, 0, 3, 0, }, 308 /* DCC_CGA80 */ 309 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 310 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 311 0, 0, 0, 3, 0, }, 312 /* DCC_EGAMONO */ 313 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC, 314 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 315 0, 0, 0, 7, 0, }, 316 /* DCC_EGA40 */ 317 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 318 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 319 0, 0, 0, 3, 0, }, 320 /* DCC_EGA80 */ 321 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 322 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 323 0, 0, 0, 3, 0, }, 324}; 325 326static video_adapter_t biosadapter[2]; 327static int biosadapters = 0; 328 329/* video driver declarations */ 330static int vga_configure(int flags); 331 int (*vga_sub_configure)(int flags); 332static int vga_nop(void); 333static vi_probe_t vga_probe; 334static vi_init_t vga_init; 335static vi_get_info_t vga_get_info; 336static vi_query_mode_t vga_query_mode; 337static vi_set_mode_t vga_set_mode; 338static vi_save_font_t vga_save_font; 339static vi_load_font_t vga_load_font; 340static vi_show_font_t vga_show_font; 341static vi_save_palette_t vga_save_palette; 342static vi_load_palette_t vga_load_palette; 343static vi_set_border_t vga_set_border; 344static vi_save_state_t vga_save_state; 345static vi_load_state_t vga_load_state; 346static vi_set_win_org_t vga_set_origin; 347static vi_read_hw_cursor_t vga_read_hw_cursor; 348static vi_set_hw_cursor_t vga_set_hw_cursor; 349static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape; 350static vi_mmap_t vga_mmap; 351static vi_diag_t vga_diag; 352 353static video_switch_t vgavidsw = { 354 vga_probe, 355 vga_init, 356 vga_get_info, 357 vga_query_mode, 358 vga_set_mode, 359 vga_save_font, 360 vga_load_font, 361 vga_show_font, 362 vga_save_palette, 363 vga_load_palette, 364 vga_set_border, 365 vga_save_state, 366 vga_load_state, 367 vga_set_origin, 368 vga_read_hw_cursor, 369 vga_set_hw_cursor, 370 vga_set_hw_cursor_shape, 371 (vi_blank_display_t *)vga_nop, 372 vga_mmap, 373 vga_diag, 374}; 375 376VIDEO_DRIVER(mda, vgavidsw, NULL); 377VIDEO_DRIVER(cga, vgavidsw, NULL); 378VIDEO_DRIVER(ega, vgavidsw, NULL); 379VIDEO_DRIVER(vga, vgavidsw, vga_configure); 380 381/* VGA BIOS standard video modes */ 382#define EOT (-1) 383#define NA (-2) 384 385static video_info_t bios_vmode[] = { 386 /* CGA */ 387 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1, 388 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 389 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, 390 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 391 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, 392 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 393 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, 394 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 395 /* EGA */ 396 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, 397 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 398 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, 399 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 400 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, 401 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 402 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, 403 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 404 /* VGA */ 405 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, 406 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 407 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, 408 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 409 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, 410 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 411 /* MDA */ 412 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, 413 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 414 /* EGA */ 415 { M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1, 416 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 417 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, 418 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 419 /* VGA */ 420 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, 421 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 422 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, 423 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 424 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, 425 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 426 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, 427 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 428 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, 429 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, 430 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, 431 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 432#ifndef VGA_NO_MODE_CHANGE 433 /* CGA */ 434 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 435 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 436 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 437 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 438 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1, 439 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, 440 /* EGA */ 441 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4, 442 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 443 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4, 444 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 445 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 446 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 }, 447 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 448 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 449 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2, 450 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 451 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 452 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 453 /* VGA */ 454 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 455 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 456 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 457 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 458 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1, 459 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 460 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 1, 461 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, 462#endif /* VGA_NO_MODE_CHANGE */ 463 464 { EOT }, 465}; 466 467static int init_done = FALSE; 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#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 780 u_int32_t p; 781#endif 782 783 buf = BIOS_PADDRTOVADDR(adp->va_window); 784 v = readw(buf); 785 writew(buf, 0xA55A); 786 if (readw(buf) != 0xA55A) 787 return 1; 788 writew(buf, v); 789 790 switch (adp->va_type) { 791 792 case KD_EGA: 793 outb(adp->va_crtc_addr, 7); 794 if (inb(adp->va_crtc_addr) == 7) { 795 adp->va_type = KD_VGA; 796 adp->va_name = "vga"; 797 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; 798 } 799 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER; 800 /* the color adapter may be in the 40x25 mode... XXX */ 801 802#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 803 /* get the BIOS video mode pointer */ 804 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8); 805 p = BIOS_SADDRTOLADDR(p); 806 if (ISMAPPED(p, sizeof(u_int32_t))) { 807 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p); 808 p = BIOS_SADDRTOLADDR(p); 809 if (ISMAPPED(p, V_MODE_PARAM_SIZE)) 810 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p); 811 } 812#endif 813 break; 814 815 case KD_CGA: 816 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; 817 /* may be in the 40x25 mode... XXX */ 818#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 819 /* get the BIOS video mode pointer */ 820 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 821 p = BIOS_SADDRTOLADDR(p); 822 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 823#endif 824 break; 825 826 case KD_MONO: 827#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 828 /* get the BIOS video mode pointer */ 829 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 830 p = BIOS_SADDRTOLADDR(p); 831 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 832#endif 833 break; 834 } 835 836 return 0; 837} 838 839static void 840update_adapter_info(video_adapter_t *adp, video_info_t *info) 841{ 842 adp->va_flags &= ~V_ADP_COLOR; 843 adp->va_flags |= 844 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 845 adp->va_crtc_addr = 846 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 847 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window); 848 adp->va_window_size = info->vi_window_size; 849 adp->va_window_gran = info->vi_window_gran; 850 if (info->vi_buffer_size == 0) { 851 adp->va_buffer = 0; 852 adp->va_buffer_size = 0; 853 } else { 854 adp->va_buffer = BIOS_PADDRTOVADDR(info->vi_buffer); 855 adp->va_buffer_size = info->vi_buffer_size; 856 } 857 if (info->vi_flags & V_INFO_GRAPHICS) { 858 switch (info->vi_depth/info->vi_planes) { 859 case 1: 860 adp->va_line_width = info->vi_width/8; 861 break; 862 case 2: 863 adp->va_line_width = info->vi_width/4; 864 break; 865 case 4: 866 adp->va_line_width = info->vi_width/2; 867 break; 868 case 8: 869 default: /* shouldn't happen */ 870 adp->va_line_width = info->vi_width; 871 break; 872 } 873 } else { 874 adp->va_line_width = info->vi_width; 875 } 876 bcopy(info, &adp->va_info, sizeof(adp->va_info)); 877} 878 879#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 880/* compare two parameter table entries */ 881static int 882comp_adpregs(u_char *buf1, u_char *buf2) 883{ 884 static struct { 885 u_char mask; 886 } params[V_MODE_PARAM_SIZE] = { 887 0xff, 0x00, 0xff, /* COLS, ROWS, POINTS */ 888 0x00, 0x00, /* page length */ 889 0xfe, 0xff, 0xff, 0xff, /* sequencer registers */ 890 0xf3, /* misc register */ 891 0xff, 0xff, 0xff, 0x7f, 0xff, /* CRTC */ 892 0xff, 0xff, 0xff, 0x7f, 0xff, 893 0x00, 0x00, 0x00, 0x00, 0x00, 894 0x00, 0xff, 0x7f, 0xff, 0xff, 895 0x7f, 0xff, 0xff, 0xef, 0xff, 896 0xff, 0xff, 0xff, 0xff, 0xff, /* attribute controller registers */ 897 0xff, 0xff, 0xff, 0xff, 0xff, 898 0xff, 0xff, 0xff, 0xff, 0xff, 899 0xff, 0xff, 0xff, 0xff, 0xf0, 900 0xff, 0xff, 0xff, 0xff, 0xff, /* GDC register */ 901 0xff, 0xff, 0xff, 0xff, 902 }; 903 int identical = TRUE; 904 int i; 905 906 if ((buf1 == NULL) || (buf2 == NULL)) 907 return COMP_DIFFERENT; 908 909 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 910 if (params[i].mask == 0) /* don't care */ 911 continue; 912 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 913 return COMP_DIFFERENT; 914 if (buf1[i] != buf2[i]) 915 identical = FALSE; 916 } 917 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 918} 919#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 920 921/* probe video adapters and return the number of detected adapters */ 922static int 923probe_adapters(void) 924{ 925 video_adapter_t *adp; 926 video_info_t info; 927 int i; 928 929 /* do this test only once */ 930 if (init_done) 931 return biosadapters; 932 init_done = TRUE; 933 934 /* 935 * Locate display adapters. 936 * The AT architecture supports upto two adapters. `syscons' allows 937 * the following combinations of adapters: 938 * 1) MDA + CGA 939 * 2) MDA + EGA/VGA color 940 * 3) CGA + EGA/VGA mono 941 * Note that `syscons' doesn't bother with MCGA as it is only 942 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 943 * thus, they are not running FreeBSD! 944 * When there are two adapaters in the system, one becomes `primary' 945 * and the other `secondary'. The EGA adapter has a set of DIP 946 * switches on board for this information and the EGA BIOS copies 947 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 948 * The VGA BIOS has more sophisticated mechanism and has this 949 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 950 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 951 */ 952 953 /* 954 * Check rtc and BIOS data area. 955 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 956 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 957 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 958 * these bits in BIOSDATA_EQUIPMENT according to the monitor 959 * type detected. 960 */ 961#ifndef VGA_NO_BIOS 962 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 963 case 0: 964 /* EGA/VGA */ 965 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 966 biosadapter); 967 break; 968 case 1: 969 /* CGA 40x25 */ 970 /* FIXME: switch to the 80x25 mode? XXX */ 971 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 972 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 973 break; 974 case 2: 975 /* CGA 80x25 */ 976 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 977 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 978 break; 979 case 3: 980 /* MDA */ 981 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 982 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 983 break; 984 } 985#else 986 /* assume EGA/VGA? XXX */ 987 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 988 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 989#endif /* VGA_NO_BIOS */ 990 991 biosadapters = 0; 992 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 993 ++biosadapters; 994 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 995 biosadapter[V_ADP_SECONDARY].va_mode = 996 biosadapter[V_ADP_SECONDARY].va_initial_mode = 997 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 998 biosadapter[V_ADP_SECONDARY].va_flags 999 & V_ADP_COLOR, 1000 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 1001 } else { 1002 biosadapter[V_ADP_SECONDARY].va_type = -1; 1003 } 1004 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 1005 ++biosadapters; 1006 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 1007#ifndef VGA_NO_BIOS 1008 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 1009 readb(BIOS_PADDRTOVADDR(0x449)); 1010#else 1011 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 1012#endif 1013 biosadapter[V_ADP_PRIMARY].va_mode = 1014 biosadapter[V_ADP_PRIMARY].va_initial_mode = 1015 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 1016 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 1017 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 1018 } else { 1019 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 1020 biosadapter[V_ADP_SECONDARY].va_type = -1; 1021 } 1022 if (biosadapters == 0) 1023 return biosadapters; 1024 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 1025 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 1026 1027#if 0 /* we don't need these... */ 1028 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 1029 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 1030#endif 1031 1032#if 0 1033 /* 1034 * We cannot have two video adapter of the same type; there must be 1035 * only one of color or mono adapter, or one each of them. 1036 */ 1037 if (biosadapters > 1) { 1038 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 1039 & V_ADP_COLOR)) 1040 /* we have two mono or color adapters!! */ 1041 return (biosadapters = 0); 1042 } 1043#endif 1044 1045 /* 1046 * Ensure a zero start address. This is mainly to recover after 1047 * switching from pcvt using userconfig(). The registers are w/o 1048 * for old hardware so it's too hard to relocate the active screen 1049 * memory. 1050 * This must be done before vga_save_state() for VGA. 1051 */ 1052 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 1053 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1054 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 1055 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1056 1057 /* the video mode parameter table in EGA/VGA BIOS */ 1058 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 1059 * recognized by the video BIOS. 1060 */ 1061 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 1062 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 1063 adp = &biosadapter[V_ADP_PRIMARY]; 1064 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 1065 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 1066 adp = &biosadapter[V_ADP_SECONDARY]; 1067 } else { 1068 adp = NULL; 1069 } 1070 bzero(mode_map, sizeof(mode_map)); 1071 if (adp != NULL) { 1072 if (adp->va_type == KD_VGA) { 1073 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1074#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1075 mode_map[adp->va_initial_mode] = adpstate.regs; 1076 rows_offset = 1; 1077#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1078 if (video_mode_ptr == NULL) { 1079 mode_map[adp->va_initial_mode] = adpstate.regs; 1080 rows_offset = 1; 1081 } else { 1082 /* discard the table if we are not familiar with it... */ 1083 u_char *mp; 1084 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1085 mp = get_mode_param(adp->va_initial_mode); 1086 if (mp != NULL) 1087 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1088 switch (comp_adpregs(adpstate.regs, mp)) { 1089 case COMP_IDENTICAL: 1090 /* 1091 * OK, this parameter table looks reasonably familiar 1092 * to us... 1093 */ 1094 /* 1095 * This is a kludge for Toshiba DynaBook SS433 1096 * whose BIOS video mode table entry has the actual # 1097 * of rows at the offset 1; BIOSes from other 1098 * manufacturers store the # of rows - 1 there. XXX 1099 */ 1100 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1101 break; 1102 1103 case COMP_SIMILAR: 1104 /* 1105 * Not exactly the same, but similar enough to be 1106 * trusted. However, use the saved register values 1107 * for the initial mode and other modes which are 1108 * based on the initial mode. 1109 */ 1110 mode_map[adp->va_initial_mode] = adpstate.regs; 1111 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1112 adpstate.regs[1] -= rows_offset - 1; 1113 break; 1114 1115 case COMP_DIFFERENT: 1116 default: 1117 /* 1118 * Don't use the paramter table in BIOS. It doesn't 1119 * look familiar to us. Video mode switching is allowed 1120 * only if the new mode is the same as or based on 1121 * the initial mode. 1122 */ 1123 video_mode_ptr = NULL; 1124 bzero(mode_map, sizeof(mode_map)); 1125 mode_map[adp->va_initial_mode] = adpstate.regs; 1126 rows_offset = 1; 1127 break; 1128 } 1129 } 1130#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1131 1132#ifndef VGA_NO_MODE_CHANGE 1133 adp->va_flags |= V_ADP_MODECHANGE; 1134#endif 1135#ifndef VGA_NO_FONT_LOADING 1136 adp->va_flags |= V_ADP_FONT; 1137#endif 1138 } else if (adp->va_type == KD_EGA) { 1139#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1140 rows_offset = 1; 1141#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1142 if (video_mode_ptr == NULL) { 1143 rows_offset = 1; 1144 } else { 1145 u_char *mp; 1146 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1147 /* XXX how can one validate the EGA table... */ 1148 mp = get_mode_param(adp->va_initial_mode); 1149 if (mp != NULL) { 1150 adp->va_flags |= V_ADP_MODECHANGE; 1151#ifndef VGA_NO_FONT_LOADING 1152 adp->va_flags |= V_ADP_FONT; 1153#endif 1154 rows_offset = 1; 1155 } else { 1156 /* 1157 * This is serious. We will not be able to switch video 1158 * modes at all... 1159 */ 1160 video_mode_ptr = NULL; 1161 bzero(mode_map, sizeof(mode_map)); 1162 rows_offset = 1; 1163 } 1164 } 1165#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1166 } 1167 } 1168 1169 /* remove conflicting modes if we have more than one adapter */ 1170 if (biosadapters > 1) { 1171 for (i = 0; i < biosadapters; ++i) { 1172 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1173 continue; 1174 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1175 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1176 V_INFO_COLOR : 0); 1177 if ((biosadapter[i].va_type == KD_VGA) 1178 || (biosadapter[i].va_type == KD_EGA)) { 1179 biosadapter[i].va_io_base = 1180 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1181 IO_VGA : IO_MDA; 1182 biosadapter[i].va_io_size = 32; 1183 } 1184 } 1185 } 1186 1187 /* buffer address */ 1188 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1189 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1190 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); 1191 1192 if (biosadapters > 1) { 1193 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1194 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1195 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); 1196 } 1197 1198 /* 1199 * XXX: we should verify the following values for the primary adapter... 1200 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1201 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1202 * ? 0 : V_ADP_COLOR; 1203 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1204 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1205 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1206 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1207 */ 1208 1209 return biosadapters; 1210} 1211 1212/* entry points */ 1213 1214static int 1215vga_nop(void) 1216{ 1217 return 0; 1218} 1219 1220static int 1221vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1222{ 1223 probe_adapters(); 1224 if (unit >= biosadapters) 1225 return ENXIO; 1226 1227 *adpp = &biosadapter[unit]; 1228 1229 return 0; 1230} 1231 1232static int 1233vga_init(int unit, video_adapter_t *adp, int flags) 1234{ 1235 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1236 return ENXIO; 1237 1238 if (!init_done(adp)) { 1239 /* nothing to do really... */ 1240 adp->va_flags |= V_ADP_INITIALIZED; 1241 } 1242 1243 if (!config_done(adp)) { 1244 if (vid_register(adp) < 0) 1245 return ENXIO; 1246 adp->va_flags |= V_ADP_REGISTERED; 1247 } 1248 if (vga_sub_configure != NULL) 1249 (*vga_sub_configure)(0); 1250 1251 return 0; 1252} 1253 1254/* 1255 * get_info(): 1256 * Return the video_info structure of the requested video mode. 1257 * 1258 * all adapters 1259 */ 1260static int 1261vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1262{ 1263 int i; 1264 1265 if (!init_done) 1266 return 1; 1267 1268 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1269#ifndef VGA_NO_MODE_CHANGE 1270 if (adp->va_flags & V_ADP_MODECHANGE) { 1271 /* 1272 * If the parameter table entry for this mode is not found, 1273 * the mode is not supported... 1274 */ 1275 if (get_mode_param(mode) == NULL) 1276 return 1; 1277 } else 1278#endif /* VGA_NO_MODE_CHANGE */ 1279 { 1280 /* 1281 * Even if we don't support video mode switching on this adapter, 1282 * the information on the initial (thus current) video mode 1283 * should be made available. 1284 */ 1285 if (mode != adp->va_initial_mode) 1286 return 1; 1287 } 1288 1289 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1290 if (bios_vmode[i].vi_mode == NA) 1291 continue; 1292 if (mode == bios_vmode[i].vi_mode) { 1293 *info = bios_vmode[i]; 1294 return 0; 1295 } 1296 } 1297 return 1; 1298} 1299 1300/* 1301 * query_mode(): 1302 * Find a video mode matching the requested parameters. 1303 * Fields filled with 0 are considered "don't care" fields and 1304 * match any modes. 1305 * 1306 * all adapters 1307 */ 1308static int 1309vga_query_mode(video_adapter_t *adp, video_info_t *info) 1310{ 1311 video_info_t buf; 1312 int i; 1313 1314 if (!init_done) 1315 return -1; 1316 1317 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1318 if (bios_vmode[i].vi_mode == NA) 1319 continue; 1320 1321 if ((info->vi_width != 0) 1322 && (info->vi_width != bios_vmode[i].vi_width)) 1323 continue; 1324 if ((info->vi_height != 0) 1325 && (info->vi_height != bios_vmode[i].vi_height)) 1326 continue; 1327 if ((info->vi_cwidth != 0) 1328 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1329 continue; 1330 if ((info->vi_cheight != 0) 1331 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1332 continue; 1333 if ((info->vi_depth != 0) 1334 && (info->vi_depth != bios_vmode[i].vi_depth)) 1335 continue; 1336 if ((info->vi_planes != 0) 1337 && (info->vi_planes != bios_vmode[i].vi_planes)) 1338 continue; 1339 /* XXX: should check pixel format, memory model */ 1340 if ((info->vi_flags != 0) 1341 && (info->vi_flags != bios_vmode[i].vi_flags)) 1342 continue; 1343 1344 /* verify if this mode is supported on this adapter */ 1345 if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf)) 1346 continue; 1347 return bios_vmode[i].vi_mode; 1348 } 1349 return -1; 1350} 1351 1352/* 1353 * set_mode(): 1354 * Change the video mode. 1355 * 1356 * EGA/VGA 1357 */ 1358static int 1359vga_set_mode(video_adapter_t *adp, int mode) 1360{ 1361#ifndef VGA_NO_MODE_CHANGE 1362 video_info_t info; 1363 adp_state_t params; 1364 1365 prologue(adp, V_ADP_MODECHANGE, 1); 1366 1367 mode = map_gen_mode_num(adp->va_type, 1368 adp->va_flags & V_ADP_COLOR, mode); 1369 if (vga_get_info(adp, mode, &info)) 1370 return 1; 1371 params.sig = V_STATE_SIG; 1372 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1373 1374 switch (mode) { 1375 case M_VGA_C80x60: case M_VGA_M80x60: 1376 params.regs[2] = 0x08; 1377 params.regs[19] = 0x47; 1378 goto special_480l; 1379 1380 case M_VGA_C80x30: case M_VGA_M80x30: 1381 params.regs[19] = 0x4f; 1382special_480l: 1383 params.regs[9] |= 0xc0; 1384 params.regs[16] = 0x08; 1385 params.regs[17] = 0x3e; 1386 params.regs[26] = 0xea; 1387 params.regs[28] = 0xdf; 1388 params.regs[31] = 0xe7; 1389 params.regs[32] = 0x04; 1390 goto setup_mode; 1391 1392 case M_ENH_C80x43: case M_ENH_B80x43: 1393 params.regs[28] = 87; 1394 goto special_80x50; 1395 1396 case M_VGA_C80x50: case M_VGA_M80x50: 1397special_80x50: 1398 params.regs[2] = 8; 1399 params.regs[19] = 7; 1400 goto setup_mode; 1401 1402 case M_VGA_C40x25: case M_VGA_C80x25: 1403 case M_VGA_M80x25: 1404 case M_B40x25: case M_C40x25: 1405 case M_B80x25: case M_C80x25: 1406 case M_ENH_B40x25: case M_ENH_C40x25: 1407 case M_ENH_B80x25: case M_ENH_C80x25: 1408 case M_EGAMONO80x25: 1409 1410setup_mode: 1411 vga_load_state(adp, ¶ms); 1412 break; 1413 1414 case M_VGA_MODEX: 1415 /* "unchain" the VGA mode */ 1416 params.regs[5-1+0x04] &= 0xf7; 1417 params.regs[5-1+0x04] |= 0x04; 1418 /* turn off doubleword mode */ 1419 params.regs[10+0x14] &= 0xbf; 1420 /* turn off word adressing */ 1421 params.regs[10+0x17] |= 0x40; 1422 /* set logical screen width */ 1423 params.regs[10+0x13] = 80; 1424 /* set 240 lines */ 1425 params.regs[10+0x11] = 0x2c; 1426 params.regs[10+0x06] = 0x0d; 1427 params.regs[10+0x07] = 0x3e; 1428 params.regs[10+0x10] = 0xea; 1429 params.regs[10+0x11] = 0xac; 1430 params.regs[10+0x12] = 0xdf; 1431 params.regs[10+0x15] = 0xe7; 1432 params.regs[10+0x16] = 0x06; 1433 /* set vertical sync polarity to reflect aspect ratio */ 1434 params.regs[9] = 0xe3; 1435 goto setup_grmode; 1436 1437 case M_BG320: case M_CG320: case M_BG640: 1438 case M_CG320_D: case M_CG640_E: 1439 case M_CG640x350: case M_ENH_CG640: 1440 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1441 1442setup_grmode: 1443 vga_load_state(adp, ¶ms); 1444 break; 1445 1446 default: 1447 return 1; 1448 } 1449 1450 adp->va_mode = mode; 1451 update_adapter_info(adp, &info); 1452 1453 /* move hardware cursor out of the way */ 1454 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1455 1456 return 0; 1457#else /* VGA_NO_MODE_CHANGE */ 1458 return 1; 1459#endif /* VGA_NO_MODE_CHANGE */ 1460} 1461 1462#ifndef VGA_NO_FONT_LOADING 1463 1464static void 1465set_font_mode(video_adapter_t *adp, u_char *buf) 1466{ 1467 u_char *mp; 1468 int s; 1469 1470 s = splhigh(); 1471 1472 /* save register values */ 1473 if (adp->va_type == KD_VGA) { 1474 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1475 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1476 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1477 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1478 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1479 inb(adp->va_crtc_addr + 6); 1480 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1481 } else /* if (adp->va_type == KD_EGA) */ { 1482 /* 1483 * EGA cannot be read; copy parameters from the mode parameter 1484 * table. 1485 */ 1486 mp = get_mode_param(adp->va_mode); 1487 buf[0] = mp[5 + 0x02 - 1]; 1488 buf[1] = mp[5 + 0x04 - 1]; 1489 buf[2] = mp[55 + 0x04]; 1490 buf[3] = mp[55 + 0x05]; 1491 buf[4] = mp[55 + 0x06]; 1492 buf[5] = mp[35 + 0x10]; 1493 } 1494 1495 /* setup vga for loading fonts */ 1496 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1497 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1498 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1499 outb(ATC, 0x20); /* enable palette */ 1500 1501#if VGA_SLOW_IOACCESS 1502#ifdef VGA_ALT_SEQACCESS 1503 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1504#endif 1505 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1506 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1507#ifdef VGA_ALT_SEQACCESS 1508 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1509#endif 1510 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1511 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1512 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1513#else /* VGA_SLOW_IOACCESS */ 1514#ifdef VGA_ALT_SEQACCESS 1515 outw(TSIDX, 0x0100); 1516#endif 1517 outw(TSIDX, 0x0402); 1518 outw(TSIDX, 0x0704); 1519#ifdef VGA_ALT_SEQACCESS 1520 outw(TSIDX, 0x0300); 1521#endif 1522 outw(GDCIDX, 0x0204); 1523 outw(GDCIDX, 0x0005); 1524 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1525#endif /* VGA_SLOW_IOACCESS */ 1526 1527 splx(s); 1528} 1529 1530static void 1531set_normal_mode(video_adapter_t *adp, u_char *buf) 1532{ 1533 int s; 1534 1535 s = splhigh(); 1536 1537 /* setup vga for normal operation mode again */ 1538 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1539 outb(ATC, 0x10); outb(ATC, buf[5]); 1540 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1541 outb(ATC, 0x20); /* enable palette */ 1542 1543#if VGA_SLOW_IOACCESS 1544#ifdef VGA_ALT_SEQACCESS 1545 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1546#endif 1547 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1548 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1549#ifdef VGA_ALT_SEQACCESS 1550 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1551#endif 1552 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1553 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1554 if (adp->va_crtc_addr == MONO_CRTC) { 1555 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1556 } else { 1557 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1558 } 1559#else /* VGA_SLOW_IOACCESS */ 1560#ifdef VGA_ALT_SEQACCESS 1561 outw(TSIDX, 0x0100); 1562#endif 1563 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1564 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1565#ifdef VGA_ALT_SEQACCESS 1566 outw(TSIDX, 0x0300); 1567#endif 1568 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1569 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1570 if (adp->va_crtc_addr == MONO_CRTC) 1571 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1572 else 1573 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1574#endif /* VGA_SLOW_IOACCESS */ 1575 1576 splx(s); 1577} 1578 1579#endif /* VGA_NO_FONT_LOADING */ 1580 1581/* 1582 * save_font(): 1583 * Read the font data in the requested font page from the video adapter. 1584 * 1585 * EGA/VGA 1586 */ 1587static int 1588vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1589 int ch, int count) 1590{ 1591#ifndef VGA_NO_FONT_LOADING 1592 u_char buf[PARAM_BUFSIZE]; 1593 u_int32_t segment; 1594 int c; 1595#ifdef VGA_ALT_SEQACCESS 1596 int s; 1597 u_char val = 0; 1598#endif 1599 1600 prologue(adp, V_ADP_FONT, 1); 1601 1602 if (fontsize < 14) { 1603 /* FONT_8 */ 1604 fontsize = 8; 1605 } else if (fontsize >= 32) { 1606 fontsize = 32; 1607 } else if (fontsize >= 16) { 1608 /* FONT_16 */ 1609 fontsize = 16; 1610 } else { 1611 /* FONT_14 */ 1612 fontsize = 14; 1613 } 1614 1615 if (page < 0 || page >= 8) 1616 return 1; 1617 segment = FONT_BUF + 0x4000*page; 1618 if (page > 3) 1619 segment -= 0xe000; 1620 1621#ifdef VGA_ALT_SEQACCESS 1622 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1623 s = splhigh(); 1624 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1625 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1626 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1627 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1628 splx(s); 1629 } 1630#endif 1631 1632 set_font_mode(adp, buf); 1633 if (fontsize == 32) { 1634 bcopy_fromio(segment + ch*32, data, fontsize*count); 1635 } else { 1636 for (c = ch; count > 0; ++c, --count) { 1637 bcopy_fromio(segment + c*32, data, fontsize); 1638 data += fontsize; 1639 } 1640 } 1641 set_normal_mode(adp, buf); 1642 1643#ifdef VGA_ALT_SEQACCESS 1644 if (adp->va_type == KD_VGA) { 1645 s = splhigh(); 1646 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1647 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1648 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1649 splx(s); 1650 } 1651#endif 1652 1653 return 0; 1654#else /* VGA_NO_FONT_LOADING */ 1655 return 1; 1656#endif /* VGA_NO_FONT_LOADING */ 1657} 1658 1659/* 1660 * load_font(): 1661 * Set the font data in the requested font page. 1662 * NOTE: it appears that some recent video adapters do not support 1663 * the font page other than 0... XXX 1664 * 1665 * EGA/VGA 1666 */ 1667static int 1668vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1669 int ch, int count) 1670{ 1671#ifndef VGA_NO_FONT_LOADING 1672 u_char buf[PARAM_BUFSIZE]; 1673 u_int32_t segment; 1674 int c; 1675#ifdef VGA_ALT_SEQACCESS 1676 int s; 1677 u_char val = 0; 1678#endif 1679 1680 prologue(adp, V_ADP_FONT, 1); 1681 1682 if (fontsize < 14) { 1683 /* FONT_8 */ 1684 fontsize = 8; 1685 } else if (fontsize >= 32) { 1686 fontsize = 32; 1687 } else if (fontsize >= 16) { 1688 /* FONT_16 */ 1689 fontsize = 16; 1690 } else { 1691 /* FONT_14 */ 1692 fontsize = 14; 1693 } 1694 1695 if (page < 0 || page >= 8) 1696 return 1; 1697 segment = FONT_BUF + 0x4000*page; 1698 if (page > 3) 1699 segment -= 0xe000; 1700 1701#ifdef VGA_ALT_SEQACCESS 1702 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1703 s = splhigh(); 1704 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1705 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1706 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1707 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1708 splx(s); 1709 } 1710#endif 1711 1712 set_font_mode(adp, buf); 1713 if (fontsize == 32) { 1714 bcopy_toio(data, segment + ch*32, fontsize*count); 1715 } else { 1716 for (c = ch; count > 0; ++c, --count) { 1717 bcopy_toio(data, segment + c*32, fontsize); 1718 data += fontsize; 1719 } 1720 } 1721 set_normal_mode(adp, buf); 1722 1723#ifdef VGA_ALT_SEQACCESS 1724 if (adp->va_type == KD_VGA) { 1725 s = splhigh(); 1726 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1727 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1728 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1729 splx(s); 1730 } 1731#endif 1732 1733 return 0; 1734#else /* VGA_NO_FONT_LOADING */ 1735 return 1; 1736#endif /* VGA_NO_FONT_LOADING */ 1737} 1738 1739/* 1740 * show_font(): 1741 * Activate the requested font page. 1742 * NOTE: it appears that some recent video adapters do not support 1743 * the font page other than 0... XXX 1744 * 1745 * EGA/VGA 1746 */ 1747static int 1748vga_show_font(video_adapter_t *adp, int page) 1749{ 1750#ifndef VGA_NO_FONT_LOADING 1751 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1752 int s; 1753 1754 prologue(adp, V_ADP_FONT, 1); 1755 if (page < 0 || page >= 8) 1756 return 1; 1757 1758 s = splhigh(); 1759 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1760 splx(s); 1761 1762 return 0; 1763#else /* VGA_NO_FONT_LOADING */ 1764 return 1; 1765#endif /* VGA_NO_FONT_LOADING */ 1766} 1767 1768/* 1769 * save_palette(): 1770 * Read DAC values. The values have expressed in 8 bits. 1771 * 1772 * VGA 1773 */ 1774static int 1775vga_save_palette(video_adapter_t *adp, u_char *palette) 1776{ 1777 int i; 1778 1779 prologue(adp, V_ADP_PALETTE, 1); 1780 1781 /* 1782 * We store 8 bit values in the palette buffer, while the standard 1783 * VGA has 6 bit DAC . 1784 */ 1785 outb(PALRADR, 0x00); 1786 for (i = 0; i < 256*3; ++i) 1787 palette[i] = inb(PALDATA) << 2; 1788 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1789 return 0; 1790} 1791 1792/* 1793 * load_palette(): 1794 * Set DAC values. 1795 * 1796 * VGA 1797 */ 1798static int 1799vga_load_palette(video_adapter_t *adp, u_char *palette) 1800{ 1801 int i; 1802 1803 prologue(adp, V_ADP_PALETTE, 1); 1804 1805 outb(PIXMASK, 0xff); /* no pixelmask */ 1806 outb(PALWADR, 0x00); 1807 for (i = 0; i < 256*3; ++i) 1808 outb(PALDATA, palette[i] >> 2); 1809 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1810 outb(ATC, 0x20); /* enable palette */ 1811 return 0; 1812} 1813 1814/* 1815 * set_border(): 1816 * Change the border color. 1817 * 1818 * CGA/EGA/VGA 1819 */ 1820static int 1821vga_set_border(video_adapter_t *adp, int color) 1822{ 1823 prologue(adp, V_ADP_BORDER, 1); 1824 1825 switch (adp->va_type) { 1826 case KD_EGA: 1827 case KD_VGA: 1828 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1829 outb(ATC, 0x31); outb(ATC, color & 0xff); 1830 break; 1831 case KD_CGA: 1832 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 1833 break; 1834 case KD_MONO: 1835 case KD_HERCULES: 1836 default: 1837 break; 1838 } 1839 return 0; 1840} 1841 1842/* 1843 * save_state(): 1844 * Read video register values. 1845 * NOTE: this function only reads the standard EGA/VGA registers. 1846 * any extra/extended registers of SVGA adapters are not saved. 1847 * 1848 * VGA 1849 */ 1850static int 1851vga_save_state(video_adapter_t *adp, void *p, size_t size) 1852{ 1853 video_info_t info; 1854 u_char *buf; 1855 int crtc_addr; 1856 int i, j; 1857 int s; 1858 1859 if (size == 0) { 1860 /* return the required buffer size */ 1861 prologue(adp, V_ADP_STATESAVE, 0); 1862 return sizeof(adp_state_t); 1863 } else { 1864 prologue(adp, V_ADP_STATESAVE, 1); 1865 if (size < sizeof(adp_state_t)) 1866 return 1; 1867 } 1868 1869 ((adp_state_t *)p)->sig = V_STATE_SIG; 1870 buf = ((adp_state_t *)p)->regs; 1871 bzero(buf, V_MODE_PARAM_SIZE); 1872 crtc_addr = adp->va_crtc_addr; 1873 1874 s = splhigh(); 1875 1876 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1877 for (i = 0, j = 5; i < 4; i++) { 1878 outb(TSIDX, i + 1); 1879 buf[j++] = inb(TSREG); 1880 } 1881 buf[9] = inb(MISC + 10); /* dot-clock */ 1882 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1883 1884 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 1885 outb(crtc_addr, i); 1886 buf[j++] = inb(crtc_addr + 1); 1887 } 1888 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 1889 inb(crtc_addr + 6); /* reset flip-flop */ 1890 outb(ATC, i); 1891 buf[j++] = inb(ATC + 1); 1892 } 1893 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 1894 outb(GDCIDX, i); 1895 buf[j++] = inb(GDCREG); 1896 } 1897 inb(crtc_addr + 6); /* reset flip-flop */ 1898 outb(ATC, 0x20); /* enable palette */ 1899 1900 splx(s); 1901 1902#if 1 1903 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 1904 if (info.vi_flags & V_INFO_GRAPHICS) { 1905 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 1906 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 1907 } else { 1908 buf[0] = info.vi_width; /* COLS */ 1909 buf[1] = info.vi_height - 1; /* ROWS */ 1910 } 1911 buf[2] = info.vi_cheight; /* POINTS */ 1912 } else { 1913 /* XXX: shouldn't be happening... */ 1914 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 1915 adp->va_unit, adp->va_name); 1916 } 1917#else 1918 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 1919 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 1920 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 1921 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 1922 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 1923#endif 1924 1925 return 0; 1926} 1927 1928/* 1929 * load_state(): 1930 * Set video registers at once. 1931 * NOTE: this function only updates the standard EGA/VGA registers. 1932 * any extra/extended registers of SVGA adapters are not changed. 1933 * 1934 * EGA/VGA 1935 */ 1936static int 1937vga_load_state(video_adapter_t *adp, void *p) 1938{ 1939 u_char *buf; 1940 int crtc_addr; 1941 int s; 1942 int i; 1943 1944 prologue(adp, V_ADP_STATELOAD, 1); 1945 if (((adp_state_t *)p)->sig != V_STATE_SIG) 1946 return 1; 1947 1948 buf = ((adp_state_t *)p)->regs; 1949 crtc_addr = adp->va_crtc_addr; 1950 1951 s = splhigh(); 1952 1953 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 1954 for (i = 0; i < 4; ++i) { /* program sequencer */ 1955 outb(TSIDX, i + 1); 1956 outb(TSREG, buf[i + 5]); 1957 } 1958 outb(MISC, buf[9]); /* set dot-clock */ 1959 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 1960 outb(crtc_addr, 0x11); 1961 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 1962 for (i = 0; i < 25; ++i) { /* program crtc */ 1963 outb(crtc_addr, i); 1964 outb(crtc_addr + 1, buf[i + 10]); 1965 } 1966 inb(crtc_addr+6); /* reset flip-flop */ 1967 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 1968 outb(ATC, i); 1969 outb(ATC, buf[i + 35]); 1970 } 1971 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 1972 outb(GDCIDX, i); 1973 outb(GDCREG, buf[i + 55]); 1974 } 1975 inb(crtc_addr + 6); /* reset flip-flop */ 1976 outb(ATC, 0x20); /* enable palette */ 1977 1978#ifndef VGA_NO_BIOS 1979 if (adp->va_unit == V_ADP_PRIMARY) { 1980 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 1981 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 1982 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 1983#if 0 1984 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 1985 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 1986#endif 1987 } 1988#endif /* VGA_NO_BIOS */ 1989 1990 splx(s); 1991 return 0; 1992} 1993 1994/* 1995 * set_origin(): 1996 * Change the origin (window mapping) of the banked frame buffer. 1997 */ 1998static int 1999vga_set_origin(video_adapter_t *adp, off_t offset) 2000{ 2001 /* 2002 * The standard video modes do not require window mapping; 2003 * always return error. 2004 */ 2005 return 1; 2006} 2007 2008/* 2009 * read_hw_cursor(): 2010 * Read the position of the hardware text cursor. 2011 * 2012 * all adapters 2013 */ 2014static int 2015vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 2016{ 2017 u_int16_t off; 2018 int s; 2019 2020 if (!init_done) 2021 return 1; 2022 2023 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2024 return 1; 2025 2026 s = spltty(); 2027 outb(adp->va_crtc_addr, 14); 2028 off = inb(adp->va_crtc_addr + 1); 2029 outb(adp->va_crtc_addr, 15); 2030 off = (off << 8) | inb(adp->va_crtc_addr + 1); 2031 splx(s); 2032 2033 *row = off / adp->va_info.vi_width; 2034 *col = off % adp->va_info.vi_width; 2035 2036 return 0; 2037} 2038 2039/* 2040 * set_hw_cursor(): 2041 * Move the hardware text cursor. If col and row are both -1, 2042 * the cursor won't be shown. 2043 * 2044 * all adapters 2045 */ 2046static int 2047vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 2048{ 2049 u_int16_t off; 2050 int s; 2051 2052 if (!init_done) 2053 return 1; 2054 2055 if ((col == -1) && (row == -1)) { 2056 off = -1; 2057 } else { 2058 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2059 return 1; 2060 off = row*adp->va_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