vga.c revision 114383
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 * $FreeBSD: head/sys/dev/fb/vga.c 114383 2003-05-01 04:21:05Z peter $ 30 */ 31 32#include "opt_vga.h" 33#include "opt_fb.h" 34#include "opt_syscons.h" /* should be removed in the future, XXX */ 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/conf.h> 40#include <sys/fcntl.h> 41#include <sys/malloc.h> 42#include <sys/fbio.h> 43 44#include <vm/vm.h> 45#include <vm/vm_param.h> 46#include <vm/pmap.h> 47 48#include <machine/md_var.h> 49#ifdef __i386__ 50#include <machine/pc/bios.h> 51#endif 52#include <machine/bus.h> 53 54#include <dev/fb/fbreg.h> 55#include <dev/fb/vgareg.h> 56 57#include <isa/isareg.h> 58 59#ifndef VGA_DEBUG 60#define VGA_DEBUG 0 61#endif 62 63/* machine/pc/bios.h has got too much i386-specific stuff in it */ 64#ifndef BIOS_PADDRTOVADDR 65#define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase) 66#endif 67int 68vga_probe_unit(int unit, video_adapter_t *buf, int flags) 69{ 70 video_adapter_t *adp; 71 video_switch_t *sw; 72 int error; 73 74 sw = vid_get_switch(VGA_DRIVER_NAME); 75 if (sw == NULL) 76 return 0; 77 error = (*sw->probe)(unit, &adp, NULL, flags); 78 if (error) 79 return error; 80 bcopy(adp, buf, sizeof(*buf)); 81 return 0; 82} 83 84int 85vga_attach_unit(int unit, vga_softc_t *sc, int flags) 86{ 87 video_switch_t *sw; 88 int error; 89 90 sw = vid_get_switch(VGA_DRIVER_NAME); 91 if (sw == NULL) 92 return ENXIO; 93 94 error = (*sw->probe)(unit, &sc->adp, NULL, flags); 95 if (error) 96 return error; 97 return (*sw->init)(unit, sc->adp, flags); 98} 99 100/* cdev driver functions */ 101 102#ifdef FB_INSTALL_CDEV 103 104int 105vga_open(dev_t dev, vga_softc_t *sc, int flag, int mode, struct thread *td) 106{ 107 if (sc == NULL) 108 return ENXIO; 109 if (mode & (O_CREAT | O_APPEND | O_TRUNC)) 110 return ENODEV; 111 112 return genfbopen(&sc->gensc, sc->adp, flag, mode, td); 113} 114 115int 116vga_close(dev_t dev, vga_softc_t *sc, int flag, int mode, struct thread *td) 117{ 118 return genfbclose(&sc->gensc, sc->adp, flag, mode, td); 119} 120 121int 122vga_read(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag) 123{ 124 return genfbread(&sc->gensc, sc->adp, uio, flag); 125} 126 127int 128vga_write(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag) 129{ 130 return genfbread(&sc->gensc, sc->adp, uio, flag); 131} 132 133int 134vga_ioctl(dev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag, 135 struct thread *td) 136{ 137 return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, td); 138} 139 140int 141vga_mmap(dev_t dev, vga_softc_t *sc, vm_offset_t offset, vm_offset_t *paddr, 142 int prot) 143{ 144 return genfbmmap(&sc->gensc, sc->adp, offset, paddr, prot); 145} 146 147#endif /* FB_INSTALL_CDEV */ 148 149/* LOW-LEVEL */ 150 151#include <machine/clock.h> 152#ifdef __i386__ 153#include <machine/pc/vesa.h> 154#endif 155 156#define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED) 157#define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED) 158#define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED) 159 160/* for compatibility with old kernel options */ 161#ifdef SC_ALT_SEQACCESS 162#undef SC_ALT_SEQACCESS 163#undef VGA_ALT_SEQACCESS 164#define VGA_ALT_SEQACCESS 1 165#endif 166 167#ifdef SLOW_VGA 168#undef SLOW_VGA 169#undef VGA_SLOW_IOACCESS 170#define VGA_SLOW_IOACCESS 1 171#endif 172 173/* architecture dependent option */ 174#ifndef __i386__ 175#define VGA_NO_BIOS 1 176#endif 177 178/* this should really be in `rtc.h' */ 179#define RTC_EQUIPMENT 0x14 180 181/* various sizes */ 182#define V_MODE_MAP_SIZE (M_VGA_CG320 + 1) 183#define V_MODE_PARAM_SIZE 64 184 185/* video adapter state buffer */ 186struct adp_state { 187 int sig; 188#define V_STATE_SIG 0x736f6962 189 u_char regs[V_MODE_PARAM_SIZE]; 190}; 191typedef struct adp_state adp_state_t; 192 193/* video adapter information */ 194#define DCC_MONO 0 195#define DCC_CGA40 1 196#define DCC_CGA80 2 197#define DCC_EGAMONO 3 198#define DCC_EGA40 4 199#define DCC_EGA80 5 200 201/* 202 * NOTE: `va_window' should have a virtual address, but is initialized 203 * with a physical address in the following table, as verify_adapter() 204 * will perform address conversion at run-time. 205 */ 206static video_adapter_t adapter_init_value[] = { 207 /* DCC_MONO */ 208 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC, 209 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 210 0, 0, 0, 0, 7, 0, }, 211 /* DCC_CGA40 */ 212 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 213 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 214 0, 0, 0, 0, 3, 0, }, 215 /* DCC_CGA80 */ 216 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, 217 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 218 0, 0, 0, 0, 3, 0, }, 219 /* DCC_EGAMONO */ 220 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC, 221 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 222 0, 0, 0, 0, 7, 0, }, 223 /* DCC_EGA40 */ 224 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 225 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 226 0, 0, 0, 0, 3, 0, }, 227 /* DCC_EGA80 */ 228 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, 229 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 230 0, 0, 0, 0, 3, 0, }, 231}; 232 233static video_adapter_t biosadapter[2]; 234static int biosadapters = 0; 235 236/* video driver declarations */ 237static int vga_configure(int flags); 238 int (*vga_sub_configure)(int flags); 239#if 0 240static int vga_nop(void); 241#endif 242static int vga_error(void); 243static vi_probe_t vga_probe; 244static vi_init_t vga_init; 245static vi_get_info_t vga_get_info; 246static vi_query_mode_t vga_query_mode; 247static vi_set_mode_t vga_set_mode; 248static vi_save_font_t vga_save_font; 249static vi_load_font_t vga_load_font; 250static vi_show_font_t vga_show_font; 251static vi_save_palette_t vga_save_palette; 252static vi_load_palette_t vga_load_palette; 253static vi_set_border_t vga_set_border; 254static vi_save_state_t vga_save_state; 255static vi_load_state_t vga_load_state; 256static vi_set_win_org_t vga_set_origin; 257static vi_read_hw_cursor_t vga_read_hw_cursor; 258static vi_set_hw_cursor_t vga_set_hw_cursor; 259static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape; 260static vi_blank_display_t vga_blank_display; 261static vi_mmap_t vga_mmap_buf; 262static vi_ioctl_t vga_dev_ioctl; 263#ifndef VGA_NO_MODE_CHANGE 264static vi_clear_t vga_clear; 265static vi_fill_rect_t vga_fill_rect; 266static vi_bitblt_t vga_bitblt; 267#else /* VGA_NO_MODE_CHANGE */ 268#define vga_clear (vi_clear_t *)vga_error 269#define vga_fill_rect (vi_fill_rect_t *)vga_error 270#define vga_bitblt (vi_bitblt_t *)vga_error 271#endif 272static vi_diag_t vga_diag; 273 274static video_switch_t vgavidsw = { 275 vga_probe, 276 vga_init, 277 vga_get_info, 278 vga_query_mode, 279 vga_set_mode, 280 vga_save_font, 281 vga_load_font, 282 vga_show_font, 283 vga_save_palette, 284 vga_load_palette, 285 vga_set_border, 286 vga_save_state, 287 vga_load_state, 288 vga_set_origin, 289 vga_read_hw_cursor, 290 vga_set_hw_cursor, 291 vga_set_hw_cursor_shape, 292 vga_blank_display, 293 vga_mmap_buf, 294 vga_dev_ioctl, 295 vga_clear, 296 vga_fill_rect, 297 vga_bitblt, 298 vga_error, 299 vga_error, 300 vga_diag, 301}; 302 303VIDEO_DRIVER(mda, vgavidsw, NULL); 304VIDEO_DRIVER(cga, vgavidsw, NULL); 305VIDEO_DRIVER(ega, vgavidsw, NULL); 306VIDEO_DRIVER(vga, vgavidsw, vga_configure); 307 308/* VGA BIOS standard video modes */ 309#define EOT (-1) 310#define NA (-2) 311 312static video_info_t bios_vmode[] = { 313 /* CGA */ 314 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1, 315 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 316 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, 317 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 318 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, 319 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 320 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, 321 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 322 /* EGA */ 323 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, 324 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 325 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, 326 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 327 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, 328 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 329 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, 330 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 331 /* VGA */ 332 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, 333 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 334 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, 335 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 336 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, 337 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 338 /* MDA */ 339 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, 340 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 341 /* EGA */ 342 { M_ENH_B80x43, 0, 80, 43, 8, 8, 2, 1, 343 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 344 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, 345 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 346 /* VGA */ 347 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, 348 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 349 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, 350 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 351 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, 352 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 353 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, 354 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 355 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, 356 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 357 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, 358 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 359 360#ifndef VGA_NO_MODE_CHANGE 361 362#ifdef VGA_WIDTH90 363 { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1, 364 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 365 { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1, 366 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 367 { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1, 368 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 369 { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1, 370 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 371 { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1, 372 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 373 { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1, 374 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 375 { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1, 376 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 377 { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1, 378 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 379 { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1, 380 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 381 { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1, 382 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, 383#endif /* VGA_WIDTH90 */ 384 385 /* CGA */ 386 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 387 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA }, 388 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 389 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA }, 390 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1, 391 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA }, 392 /* EGA */ 393 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4, 394 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0, 395 V_INFO_MM_PLANAR }, 396 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4, 397 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 , 398 V_INFO_MM_PLANAR }, 399 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 400 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 , 401 V_INFO_MM_PLANAR }, 402 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 403 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 , 404 V_INFO_MM_PLANAR }, 405 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2, 406 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 , 407 V_INFO_MM_PLANAR }, 408 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 409 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 , 410 V_INFO_MM_PLANAR }, 411 /* VGA */ 412 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 413 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 , 414 V_INFO_MM_PLANAR }, 415 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 416 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 , 417 V_INFO_MM_PLANAR }, 418 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1, 419 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0, 420 V_INFO_MM_PACKED, 1 }, 421 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4, 422 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0, 423 V_INFO_MM_VGAX, 1 }, 424#endif /* VGA_NO_MODE_CHANGE */ 425 426 { EOT }, 427}; 428 429static int vga_init_done = FALSE; 430#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 431static u_char *video_mode_ptr = NULL; /* EGA/VGA */ 432static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */ 433#endif 434static u_char *mode_map[V_MODE_MAP_SIZE]; 435static adp_state_t adpstate; 436static adp_state_t adpstate2; 437static int rows_offset = 1; 438 439/* local macros and functions */ 440#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) 441 442#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 443static void map_mode_table(u_char *map[], u_char *table, int max); 444#endif 445static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max, 446 int color); 447#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 448static int map_mode_num(int mode); 449#endif 450static int map_gen_mode_num(int type, int color, int mode); 451static int map_bios_mode_num(int type, int color, int bios_mode); 452static u_char *get_mode_param(int mode); 453#ifndef VGA_NO_BIOS 454static void fill_adapter_param(int code, video_adapter_t *adp); 455#endif 456static int verify_adapter(video_adapter_t *adp); 457static void update_adapter_info(video_adapter_t *adp, video_info_t *info); 458#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 459#define COMP_IDENTICAL 0 460#define COMP_SIMILAR 1 461#define COMP_DIFFERENT 2 462static int comp_adpregs(u_char *buf1, u_char *buf2); 463#endif 464static int probe_adapters(void); 465static int set_line_length(video_adapter_t *adp, int pixel); 466static int set_display_start(video_adapter_t *adp, int x, int y); 467static void filll_io(int val, vm_offset_t d, size_t size); 468 469#ifndef VGA_NO_MODE_CHANGE 470#ifdef VGA_WIDTH90 471static void set_width90(adp_state_t *params); 472#endif 473#endif /* !VGA_NO_MODE_CHANGE */ 474 475#ifndef VGA_NO_FONT_LOADING 476#define PARAM_BUFSIZE 6 477static void set_font_mode(video_adapter_t *adp, u_char *buf); 478static void set_normal_mode(video_adapter_t *adp, u_char *buf); 479#endif 480 481#ifndef VGA_NO_MODE_CHANGE 482static void planar_fill(video_adapter_t *adp, int val); 483static void packed_fill(video_adapter_t *adp, int val); 484static void direct_fill(video_adapter_t *adp, int val); 485#ifdef notyet 486static void planar_fill_rect(video_adapter_t *adp, int val, int x, int y, 487 int cx, int cy); 488static void packed_fill_rect(video_adapter_t *adp, int val, int x, int y, 489 int cx, int cy); 490static void direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, 491 int cx, int cy); 492static void direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, 493 int cx, int cy); 494static void direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, 495 int cx, int cy); 496#endif /* notyet */ 497#endif /* !VGA_NO_MODE_CHANGE */ 498 499static void dump_buffer(u_char *buf, size_t len); 500 501#define ISMAPPED(pa, width) \ 502 (((pa) <= (u_long)0x1000 - (width)) \ 503 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width))) 504 505#define prologue(adp, flag, err) \ 506 if (!vga_init_done || !((adp)->va_flags & (flag))) \ 507 return (err) 508 509/* a backdoor for the console driver */ 510static int 511vga_configure(int flags) 512{ 513 int i; 514 515 probe_adapters(); 516 for (i = 0; i < biosadapters; ++i) { 517 if (!probe_done(&biosadapter[i])) 518 continue; 519 biosadapter[i].va_flags |= V_ADP_INITIALIZED; 520 if (!config_done(&biosadapter[i])) { 521 if (vid_register(&biosadapter[i]) < 0) 522 continue; 523 biosadapter[i].va_flags |= V_ADP_REGISTERED; 524 } 525 } 526 if (vga_sub_configure != NULL) 527 (*vga_sub_configure)(flags); 528 529 return biosadapters; 530} 531 532/* local subroutines */ 533 534#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 535/* construct the mode parameter map */ 536static void 537map_mode_table(u_char *map[], u_char *table, int max) 538{ 539 int i; 540 541 for(i = 0; i < max; ++i) 542 map[i] = table + i*V_MODE_PARAM_SIZE; 543 for(; i < V_MODE_MAP_SIZE; ++i) 544 map[i] = NULL; 545} 546#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 547 548static void 549clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color) 550{ 551 video_info_t info; 552 int i; 553 554 /* 555 * NOTE: we don't touch `bios_vmode[]' because it is shared 556 * by all adapters. 557 */ 558 for(i = 0; i < max; ++i) { 559 if (vga_get_info(adp, i, &info)) 560 continue; 561 if ((info.vi_flags & V_INFO_COLOR) != color) 562 map[i] = NULL; 563 } 564} 565 566#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 567/* map the non-standard video mode to a known mode number */ 568static int 569map_mode_num(int mode) 570{ 571 static struct { 572 int from; 573 int to; 574 } mode_map[] = { 575 { M_ENH_B80x43, M_ENH_B80x25 }, 576 { M_ENH_C80x43, M_ENH_C80x25 }, 577 { M_VGA_M80x30, M_VGA_M80x25 }, 578 { M_VGA_C80x30, M_VGA_C80x25 }, 579 { M_VGA_M80x50, M_VGA_M80x25 }, 580 { M_VGA_C80x50, M_VGA_C80x25 }, 581 { M_VGA_M80x60, M_VGA_M80x25 }, 582 { M_VGA_C80x60, M_VGA_C80x25 }, 583#ifdef VGA_WIDTH90 584 { M_VGA_M90x25, M_VGA_M80x25 }, 585 { M_VGA_C90x25, M_VGA_C80x25 }, 586 { M_VGA_M90x30, M_VGA_M80x25 }, 587 { M_VGA_C90x30, M_VGA_C80x25 }, 588 { M_VGA_M90x43, M_ENH_B80x25 }, 589 { M_VGA_C90x43, M_ENH_C80x25 }, 590 { M_VGA_M90x50, M_VGA_M80x25 }, 591 { M_VGA_C90x50, M_VGA_C80x25 }, 592 { M_VGA_M90x60, M_VGA_M80x25 }, 593 { M_VGA_C90x60, M_VGA_C80x25 }, 594#endif 595 { M_VGA_MODEX, M_VGA_CG320 }, 596 }; 597 int i; 598 599 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 600 if (mode_map[i].from == mode) 601 return mode_map[i].to; 602 } 603 return mode; 604} 605#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 606 607/* map a generic video mode to a known mode number */ 608static int 609map_gen_mode_num(int type, int color, int mode) 610{ 611 static struct { 612 int from; 613 int to_color; 614 int to_mono; 615 } mode_map[] = { 616 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, }, 617 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, }, 618 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, }, 619 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, }, 620 }; 621 int i; 622 623 if (mode == M_TEXT_80x25) { 624 switch (type) { 625 626 case KD_VGA: 627 if (color) 628 return M_VGA_C80x25; 629 else 630 return M_VGA_M80x25; 631 break; 632 633 case KD_EGA: 634 if (color) 635 return M_ENH_C80x25; 636 else 637 return M_EGAMONO80x25; 638 break; 639 640 case KD_CGA: 641 return M_C80x25; 642 643 case KD_MONO: 644 case KD_HERCULES: 645 return M_EGAMONO80x25; /* XXX: this name is confusing */ 646 647 default: 648 return -1; 649 } 650 } 651 652 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { 653 if (mode_map[i].from == mode) 654 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono); 655 } 656 return mode; 657} 658 659/* turn the BIOS video number into our video mode number */ 660static int 661map_bios_mode_num(int type, int color, int bios_mode) 662{ 663 static int cga_modes[7] = { 664 M_B40x25, M_C40x25, /* 0, 1 */ 665 M_B80x25, M_C80x25, /* 2, 3 */ 666 M_BG320, M_CG320, 667 M_BG640, 668 }; 669 static int ega_modes[17] = { 670 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */ 671 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */ 672 M_BG320, M_CG320, 673 M_BG640, 674 M_EGAMONO80x25, /* 7 */ 675 8, 9, 10, 11, 12, 676 M_CG320_D, 677 M_CG640_E, 678 M_ENHMONOAPA2, /* XXX: video momery > 64K */ 679 M_ENH_CG640, /* XXX: video momery > 64K */ 680 }; 681 static int vga_modes[20] = { 682 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */ 683 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */ 684 M_BG320, M_CG320, 685 M_BG640, 686 M_VGA_M80x25, /* 7 */ 687 8, 9, 10, 11, 12, 688 M_CG320_D, 689 M_CG640_E, 690 M_ENHMONOAPA2, 691 M_ENH_CG640, 692 M_BG640x480, M_CG640x480, 693 M_VGA_CG320, 694 }; 695 696 switch (type) { 697 698 case KD_VGA: 699 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0])) 700 return vga_modes[bios_mode]; 701 else if (color) 702 return M_VGA_C80x25; 703 else 704 return M_VGA_M80x25; 705 break; 706 707 case KD_EGA: 708 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0])) 709 return ega_modes[bios_mode]; 710 else if (color) 711 return M_ENH_C80x25; 712 else 713 return M_EGAMONO80x25; 714 break; 715 716 case KD_CGA: 717 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0])) 718 return cga_modes[bios_mode]; 719 else 720 return M_C80x25; 721 break; 722 723 case KD_MONO: 724 case KD_HERCULES: 725 return M_EGAMONO80x25; /* XXX: this name is confusing */ 726 727 default: 728 break; 729 } 730 return -1; 731} 732 733/* look up a parameter table entry */ 734static u_char 735*get_mode_param(int mode) 736{ 737#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 738 if (mode >= V_MODE_MAP_SIZE) 739 mode = map_mode_num(mode); 740#endif 741 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE)) 742 return mode_map[mode]; 743 else 744 return NULL; 745} 746 747#ifndef VGA_NO_BIOS 748static void 749fill_adapter_param(int code, video_adapter_t *adp) 750{ 751 static struct { 752 int primary; 753 int secondary; 754 } dcc[] = { 755 { DCC_MONO, DCC_EGA40 /* CGA monitor */ }, 756 { DCC_MONO, DCC_EGA80 /* CGA monitor */ }, 757 { DCC_MONO, DCC_EGA80 }, 758 { DCC_MONO, DCC_EGA80 }, 759 { DCC_CGA40, DCC_EGAMONO }, 760 { DCC_CGA80, DCC_EGAMONO }, 761 { DCC_EGA40 /* CGA monitor */, DCC_MONO}, 762 { DCC_EGA80 /* CGA monitor */, DCC_MONO}, 763 { DCC_EGA80, DCC_MONO }, 764 { DCC_EGA80, DCC_MONO }, 765 { DCC_EGAMONO, DCC_CGA40 }, 766 { DCC_EGAMONO, DCC_CGA80 }, 767 }; 768 769 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) { 770 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 771 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 772 } else { 773 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary]; 774 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary]; 775 } 776} 777#endif /* VGA_NO_BIOS */ 778 779static int 780verify_adapter(video_adapter_t *adp) 781{ 782 vm_offset_t buf; 783 u_int16_t v; 784#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 785 u_int32_t p; 786#endif 787 788 buf = BIOS_PADDRTOVADDR(adp->va_window); 789 v = readw(buf); 790 writew(buf, 0xA55A); 791 if (readw(buf) != 0xA55A) 792 return ENXIO; 793 writew(buf, v); 794 795 switch (adp->va_type) { 796 797 case KD_EGA: 798 outb(adp->va_crtc_addr, 7); 799 if (inb(adp->va_crtc_addr) == 7) { 800 adp->va_type = KD_VGA; 801 adp->va_name = "vga"; 802 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; 803 } 804 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER; 805 /* the color adapter may be in the 40x25 mode... XXX */ 806 807#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 808 /* get the BIOS video mode pointer */ 809 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8); 810 p = BIOS_SADDRTOLADDR(p); 811 if (ISMAPPED(p, sizeof(u_int32_t))) { 812 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p); 813 p = BIOS_SADDRTOLADDR(p); 814 if (ISMAPPED(p, V_MODE_PARAM_SIZE)) 815 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p); 816 } 817#endif 818 break; 819 820 case KD_CGA: 821 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; 822 /* may be in the 40x25 mode... XXX */ 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 case KD_MONO: 832#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 833 /* get the BIOS video mode pointer */ 834 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); 835 p = BIOS_SADDRTOLADDR(p); 836 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); 837#endif 838 break; 839 } 840 841 return 0; 842} 843 844static void 845update_adapter_info(video_adapter_t *adp, video_info_t *info) 846{ 847 adp->va_flags &= ~V_ADP_COLOR; 848 adp->va_flags |= 849 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; 850 adp->va_crtc_addr = 851 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; 852 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window); 853 adp->va_window_size = info->vi_window_size; 854 adp->va_window_gran = info->vi_window_gran; 855 adp->va_window_orig = 0; 856 /* XXX */ 857 adp->va_buffer = info->vi_buffer; 858 adp->va_buffer_size = info->vi_buffer_size; 859 if (info->vi_mem_model == V_INFO_MM_VGAX) { 860 adp->va_line_width = info->vi_width/2; 861 } else if (info->vi_flags & V_INFO_GRAPHICS) { 862 switch (info->vi_depth/info->vi_planes) { 863 case 1: 864 adp->va_line_width = info->vi_width/8; 865 break; 866 case 2: 867 adp->va_line_width = info->vi_width/4; 868 break; 869 case 4: 870 adp->va_line_width = info->vi_width/2; 871 break; 872 case 8: 873 default: /* shouldn't happen */ 874 adp->va_line_width = info->vi_width; 875 break; 876 } 877 } else { 878 adp->va_line_width = info->vi_width; 879 } 880 adp->va_disp_start.x = 0; 881 adp->va_disp_start.y = 0; 882 bcopy(info, &adp->va_info, sizeof(adp->va_info)); 883} 884 885#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 886/* compare two parameter table entries */ 887static int 888comp_adpregs(u_char *buf1, u_char *buf2) 889{ 890 static struct { 891 u_char mask; 892 } params[V_MODE_PARAM_SIZE] = { 893 {0xff}, {0x00}, {0xff}, /* COLS}, ROWS}, POINTS */ 894 {0x00}, {0x00}, /* page length */ 895 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */ 896 {0xf3}, /* misc register */ 897 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */ 898 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, 899 {0x00}, {0x00}, {0x00}, {0x00}, {0x00}, 900 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff}, 901 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff}, 902 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */ 903 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, 904 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, 905 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0}, 906 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */ 907 {0xff}, {0xff}, {0xff}, {0xff}, 908 }; 909 int identical = TRUE; 910 int i; 911 912 if ((buf1 == NULL) || (buf2 == NULL)) 913 return COMP_DIFFERENT; 914 915 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { 916 if (params[i].mask == 0) /* don't care */ 917 continue; 918 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) 919 return COMP_DIFFERENT; 920 if (buf1[i] != buf2[i]) 921 identical = FALSE; 922 } 923 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; 924} 925#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ 926 927/* probe video adapters and return the number of detected adapters */ 928static int 929probe_adapters(void) 930{ 931 video_adapter_t *adp; 932 video_info_t info; 933#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 934 u_char *mp; 935#endif 936 int i; 937 938 /* do this test only once */ 939 if (vga_init_done) 940 return biosadapters; 941 vga_init_done = TRUE; 942 943 /* 944 * Locate display adapters. 945 * The AT architecture supports upto two adapters. `syscons' allows 946 * the following combinations of adapters: 947 * 1) MDA + CGA 948 * 2) MDA + EGA/VGA color 949 * 3) CGA + EGA/VGA mono 950 * Note that `syscons' doesn't bother with MCGA as it is only 951 * avaiable for low end PS/2 models which has 80286 or earlier CPUs, 952 * thus, they are not running FreeBSD! 953 * When there are two adapaters in the system, one becomes `primary' 954 * and the other `secondary'. The EGA adapter has a set of DIP 955 * switches on board for this information and the EGA BIOS copies 956 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 957 * The VGA BIOS has more sophisticated mechanism and has this 958 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 959 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. 960 */ 961 962 /* 963 * Check rtc and BIOS data area. 964 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead 965 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are 966 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets 967 * these bits in BIOSDATA_EQUIPMENT according to the monitor 968 * type detected. 969 */ 970#ifndef VGA_NO_BIOS 971 if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) { 972 /* EGA/VGA BIOS is present */ 973 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 974 biosadapter); 975 } else { 976 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ 977 case 0: 978 /* EGA/VGA: shouldn't be happening */ 979 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 980 biosadapter); 981 break; 982 case 1: 983 /* CGA 40x25 */ 984 /* FIXME: switch to the 80x25 mode? XXX */ 985 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; 986 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 987 break; 988 case 2: 989 /* CGA 80x25 */ 990 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; 991 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 992 break; 993 case 3: 994 /* MDA */ 995 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; 996 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; 997 break; 998 } 999 } 1000#else 1001 /* assume EGA/VGA? XXX */ 1002 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; 1003 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; 1004#endif /* VGA_NO_BIOS */ 1005 1006 biosadapters = 0; 1007 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { 1008 ++biosadapters; 1009 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; 1010 biosadapter[V_ADP_SECONDARY].va_mode = 1011 biosadapter[V_ADP_SECONDARY].va_initial_mode = 1012 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 1013 biosadapter[V_ADP_SECONDARY].va_flags 1014 & V_ADP_COLOR, 1015 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); 1016 } else { 1017 biosadapter[V_ADP_SECONDARY].va_type = -1; 1018 } 1019 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { 1020 ++biosadapters; 1021 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; 1022#ifndef VGA_NO_BIOS 1023 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 1024 readb(BIOS_PADDRTOVADDR(0x449)); 1025#else 1026 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ 1027#endif 1028 biosadapter[V_ADP_PRIMARY].va_mode = 1029 biosadapter[V_ADP_PRIMARY].va_initial_mode = 1030 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 1031 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, 1032 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); 1033 } else { 1034 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; 1035 biosadapter[V_ADP_SECONDARY].va_type = -1; 1036 } 1037 if (biosadapters == 0) 1038 return biosadapters; 1039 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; 1040 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; 1041 1042#if 0 /* we don't need these... */ 1043 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); 1044 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); 1045#endif 1046 1047#if notyet 1048 /* 1049 * We cannot have two video adapter of the same type; there must be 1050 * only one of color or mono adapter, or one each of them. 1051 */ 1052 if (biosadapters > 1) { 1053 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) 1054 & V_ADP_COLOR)) 1055 /* we have two mono or color adapters!! */ 1056 return (biosadapters = 0); 1057 } 1058#endif 1059 1060 /* 1061 * Ensure a zero start address. The registers are w/o 1062 * for old hardware so it's too hard to relocate the active screen 1063 * memory. 1064 * This must be done before vga_save_state() for VGA. 1065 */ 1066 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); 1067 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1068 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); 1069 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); 1070 1071 /* the video mode parameter table in EGA/VGA BIOS */ 1072 /* NOTE: there can be only one EGA/VGA, wheather color or mono, 1073 * recognized by the video BIOS. 1074 */ 1075 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || 1076 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { 1077 adp = &biosadapter[V_ADP_PRIMARY]; 1078 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || 1079 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { 1080 adp = &biosadapter[V_ADP_SECONDARY]; 1081 } else { 1082 adp = NULL; 1083 } 1084 bzero(mode_map, sizeof(mode_map)); 1085 if (adp != NULL) { 1086 if (adp->va_type == KD_VGA) { 1087 vga_save_state(adp, &adpstate, sizeof(adpstate)); 1088#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1089 mode_map[adp->va_initial_mode] = adpstate.regs; 1090 rows_offset = 1; 1091#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1092 if (video_mode_ptr == NULL) { 1093 mode_map[adp->va_initial_mode] = adpstate.regs; 1094 rows_offset = 1; 1095 } else { 1096 /* discard the table if we are not familiar with it... */ 1097 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); 1098 mp = get_mode_param(adp->va_initial_mode); 1099 if (mp != NULL) 1100 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); 1101 switch (comp_adpregs(adpstate.regs, mp)) { 1102 case COMP_IDENTICAL: 1103 /* 1104 * OK, this parameter table looks reasonably familiar 1105 * to us... 1106 */ 1107 /* 1108 * This is a kludge for Toshiba DynaBook SS433 1109 * whose BIOS video mode table entry has the actual # 1110 * of rows at the offset 1; BIOSes from other 1111 * manufacturers store the # of rows - 1 there. XXX 1112 */ 1113 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1114 break; 1115 1116 case COMP_SIMILAR: 1117 /* 1118 * Not exactly the same, but similar enough to be 1119 * trusted. However, use the saved register values 1120 * for the initial mode and other modes which are 1121 * based on the initial mode. 1122 */ 1123 mode_map[adp->va_initial_mode] = adpstate.regs; 1124 rows_offset = adpstate.regs[1] + 1 - mp[1]; 1125 adpstate.regs[1] -= rows_offset - 1; 1126 break; 1127 1128 case COMP_DIFFERENT: 1129 default: 1130 /* 1131 * Don't use the paramter table in BIOS. It doesn't 1132 * look familiar to us. Video mode switching is allowed 1133 * only if the new mode is the same as or based on 1134 * the initial mode. 1135 */ 1136 video_mode_ptr = NULL; 1137 bzero(mode_map, sizeof(mode_map)); 1138 mode_map[adp->va_initial_mode] = adpstate.regs; 1139 rows_offset = 1; 1140 break; 1141 } 1142 } 1143#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1144 1145#ifndef VGA_NO_MODE_CHANGE 1146 adp->va_flags |= V_ADP_MODECHANGE; 1147#endif 1148#ifndef VGA_NO_FONT_LOADING 1149 adp->va_flags |= V_ADP_FONT; 1150#endif 1151 } else if (adp->va_type == KD_EGA) { 1152#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) 1153 rows_offset = 1; 1154#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1155 if (video_mode_ptr == NULL) { 1156 rows_offset = 1; 1157 } else { 1158 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); 1159 /* XXX how can one validate the EGA table... */ 1160 mp = get_mode_param(adp->va_initial_mode); 1161 if (mp != NULL) { 1162 adp->va_flags |= V_ADP_MODECHANGE; 1163#ifndef VGA_NO_FONT_LOADING 1164 adp->va_flags |= V_ADP_FONT; 1165#endif 1166 rows_offset = 1; 1167 } else { 1168 /* 1169 * This is serious. We will not be able to switch video 1170 * modes at all... 1171 */ 1172 video_mode_ptr = NULL; 1173 bzero(mode_map, sizeof(mode_map)); 1174 rows_offset = 1; 1175 } 1176 } 1177#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ 1178 } 1179 } 1180 1181 /* remove conflicting modes if we have more than one adapter */ 1182 if (biosadapters > 0) { 1183 for (i = 0; i < biosadapters; ++i) { 1184 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) 1185 continue; 1186 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, 1187 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1188 V_INFO_COLOR : 0); 1189 if ((biosadapter[i].va_type == KD_VGA) 1190 || (biosadapter[i].va_type == KD_EGA)) { 1191 biosadapter[i].va_io_base = 1192 (biosadapter[i].va_flags & V_ADP_COLOR) ? 1193 IO_VGA : IO_MDA; 1194 biosadapter[i].va_io_size = 32; 1195 } 1196 } 1197 } 1198 1199 /* buffer address */ 1200 vga_get_info(&biosadapter[V_ADP_PRIMARY], 1201 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); 1202 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */ 1203 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); 1204 1205 if (biosadapters > 1) { 1206 vga_get_info(&biosadapter[V_ADP_SECONDARY], 1207 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); 1208 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */ 1209 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); 1210 } 1211 1212 /* 1213 * XXX: we should verify the following values for the primary adapter... 1214 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); 1215 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 1216 * ? 0 : V_ADP_COLOR; 1217 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); 1218 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); 1219 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); 1220 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); 1221 */ 1222 1223 return biosadapters; 1224} 1225 1226/* set the scan line length in pixel */ 1227static int 1228set_line_length(video_adapter_t *adp, int pixel) 1229{ 1230 u_char *mp; 1231 int ppw; /* pixels per word */ 1232 int bpl; /* bytes per line */ 1233 int count; 1234 1235 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA)) 1236 return ENODEV; 1237 mp = get_mode_param(adp->va_mode); 1238 if (mp == NULL) 1239 return EINVAL; 1240 1241 switch (adp->va_info.vi_mem_model) { 1242 case V_INFO_MM_PLANAR: 1243 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes); 1244 count = (pixel + ppw - 1)/ppw/2; 1245 bpl = ((pixel + ppw - 1)/ppw/2)*4; 1246 break; 1247 case V_INFO_MM_PACKED: 1248 count = (pixel + 7)/8; 1249 bpl = ((pixel + 7)/8)*8; 1250 break; 1251 case V_INFO_MM_TEXT: 1252 count = (pixel + 7)/8; /* columns */ 1253 bpl = (pixel + 7)/8; /* columns */ 1254 break; 1255 default: 1256 return ENODEV; 1257 } 1258 1259 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */ 1260 count *= 2; /* byte mode */ 1261 outb(adp->va_crtc_addr, 0x13); 1262 outb(adp->va_crtc_addr + 1, count); 1263 adp->va_line_width = bpl; 1264 1265 return 0; 1266} 1267 1268static int 1269set_display_start(video_adapter_t *adp, int x, int y) 1270{ 1271 int off; /* byte offset (graphics mode)/word offset (text mode) */ 1272 int poff; /* pixel offset */ 1273 int roff; /* row offset */ 1274 int ppb; /* pixels per byte */ 1275 1276 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA)) 1277 x &= ~7; 1278 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) { 1279 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes); 1280 off = y*adp->va_line_width + x/ppb; 1281 roff = 0; 1282 poff = x%ppb; 1283 } else { 1284 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) { 1285 outb(TSIDX, 1); 1286 if (inb(TSREG) & 1) 1287 ppb = 9; 1288 else 1289 ppb = 8; 1290 } else { 1291 ppb = 8; 1292 } 1293 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb; 1294 roff = y%adp->va_info.vi_cheight; 1295 /* FIXME: is this correct? XXX */ 1296 if (ppb == 8) 1297 poff = x%ppb; 1298 else 1299 poff = (x + 8)%ppb; 1300 } 1301 1302 /* start address */ 1303 outb(adp->va_crtc_addr, 0xc); /* high */ 1304 outb(adp->va_crtc_addr + 1, off >> 8); 1305 outb(adp->va_crtc_addr, 0xd); /* low */ 1306 outb(adp->va_crtc_addr + 1, off & 0xff); 1307 1308 /* horizontal pel pan */ 1309 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) { 1310 inb(adp->va_crtc_addr + 6); 1311 outb(ATC, 0x13 | 0x20); 1312 outb(ATC, poff); 1313 inb(adp->va_crtc_addr + 6); 1314 outb(ATC, 0x20); 1315 } 1316 1317 /* preset raw scan */ 1318 outb(adp->va_crtc_addr, 8); 1319 outb(adp->va_crtc_addr + 1, roff); 1320 1321 adp->va_disp_start.x = x; 1322 adp->va_disp_start.y = y; 1323 return 0; 1324} 1325 1326#if defined(__i386__) || defined(__amd64__) /* XXX */ 1327static void 1328fill(int val, void *d, size_t size) 1329{ 1330 u_char *p = d; 1331 1332 while (size-- > 0) 1333 *p++ = val; 1334} 1335#endif /* __i386__ */ 1336 1337static void 1338filll_io(int val, vm_offset_t d, size_t size) 1339{ 1340 while (size-- > 0) { 1341 writel(d, val); 1342 d += sizeof(u_int32_t); 1343 } 1344} 1345 1346/* entry points */ 1347 1348#if 0 1349static int 1350vga_nop(void) 1351{ 1352 return 0; 1353} 1354#endif 1355 1356static int 1357vga_error(void) 1358{ 1359 return ENODEV; 1360} 1361 1362static int 1363vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) 1364{ 1365 probe_adapters(); 1366 if (unit >= biosadapters) 1367 return ENXIO; 1368 1369 *adpp = &biosadapter[unit]; 1370 1371 return 0; 1372} 1373 1374static int 1375vga_init(int unit, video_adapter_t *adp, int flags) 1376{ 1377 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) 1378 return ENXIO; 1379 1380 if (!init_done(adp)) { 1381 /* nothing to do really... */ 1382 adp->va_flags |= V_ADP_INITIALIZED; 1383 } 1384 1385 if (!config_done(adp)) { 1386 if (vid_register(adp) < 0) 1387 return ENXIO; 1388 adp->va_flags |= V_ADP_REGISTERED; 1389 } 1390 if (vga_sub_configure != NULL) 1391 (*vga_sub_configure)(0); 1392 1393 return 0; 1394} 1395 1396/* 1397 * get_info(): 1398 * Return the video_info structure of the requested video mode. 1399 * 1400 * all adapters 1401 */ 1402static int 1403vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) 1404{ 1405 int i; 1406 1407 if (!vga_init_done) 1408 return ENXIO; 1409 1410 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); 1411#ifndef VGA_NO_MODE_CHANGE 1412 if (adp->va_flags & V_ADP_MODECHANGE) { 1413 /* 1414 * If the parameter table entry for this mode is not found, 1415 * the mode is not supported... 1416 */ 1417 if (get_mode_param(mode) == NULL) 1418 return EINVAL; 1419 } else 1420#endif /* VGA_NO_MODE_CHANGE */ 1421 { 1422 /* 1423 * Even if we don't support video mode switching on this adapter, 1424 * the information on the initial (thus current) video mode 1425 * should be made available. 1426 */ 1427 if (mode != adp->va_initial_mode) 1428 return EINVAL; 1429 } 1430 1431 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1432 if (bios_vmode[i].vi_mode == NA) 1433 continue; 1434 if (mode == bios_vmode[i].vi_mode) { 1435 *info = bios_vmode[i]; 1436 /* XXX */ 1437 info->vi_buffer_size = info->vi_window_size*info->vi_planes; 1438 return 0; 1439 } 1440 } 1441 return EINVAL; 1442} 1443 1444/* 1445 * query_mode(): 1446 * Find a video mode matching the requested parameters. 1447 * Fields filled with 0 are considered "don't care" fields and 1448 * match any modes. 1449 * 1450 * all adapters 1451 */ 1452static int 1453vga_query_mode(video_adapter_t *adp, video_info_t *info) 1454{ 1455 int i; 1456 1457 if (!vga_init_done) 1458 return ENXIO; 1459 1460 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 1461 if (bios_vmode[i].vi_mode == NA) 1462 continue; 1463 1464 if ((info->vi_width != 0) 1465 && (info->vi_width != bios_vmode[i].vi_width)) 1466 continue; 1467 if ((info->vi_height != 0) 1468 && (info->vi_height != bios_vmode[i].vi_height)) 1469 continue; 1470 if ((info->vi_cwidth != 0) 1471 && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) 1472 continue; 1473 if ((info->vi_cheight != 0) 1474 && (info->vi_cheight != bios_vmode[i].vi_cheight)) 1475 continue; 1476 if ((info->vi_depth != 0) 1477 && (info->vi_depth != bios_vmode[i].vi_depth)) 1478 continue; 1479 if ((info->vi_planes != 0) 1480 && (info->vi_planes != bios_vmode[i].vi_planes)) 1481 continue; 1482 /* XXX: should check pixel format, memory model */ 1483 if ((info->vi_flags != 0) 1484 && (info->vi_flags != bios_vmode[i].vi_flags)) 1485 continue; 1486 1487 /* verify if this mode is supported on this adapter */ 1488 if (vga_get_info(adp, bios_vmode[i].vi_mode, info)) 1489 continue; 1490 return 0; 1491 } 1492 return ENODEV; 1493} 1494 1495/* 1496 * set_mode(): 1497 * Change the video mode. 1498 * 1499 * EGA/VGA 1500 */ 1501 1502#ifndef VGA_NO_MODE_CHANGE 1503#ifdef VGA_WIDTH90 1504static void 1505set_width90(adp_state_t *params) 1506{ 1507 /* 1508 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com) 1509 * and alexv@sui.gda.itesm.mx. 1510 */ 1511 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */ 1512 params->regs[10+0x0] = 0x6b; 1513 params->regs[10+0x1] = 0x59; 1514 params->regs[10+0x2] = 0x5a; 1515 params->regs[10+0x3] = 0x8e; 1516 params->regs[10+0x4] = 0x5e; 1517 params->regs[10+0x5] = 0x8a; 1518 params->regs[10+0x13] = 45; 1519 params->regs[35+0x13] = 0; 1520} 1521#endif /* VGA_WIDTH90 */ 1522#endif /* !VGA_NO_MODE_CHANGE */ 1523 1524static int 1525vga_set_mode(video_adapter_t *adp, int mode) 1526{ 1527#ifndef VGA_NO_MODE_CHANGE 1528 video_info_t info; 1529 adp_state_t params; 1530 1531 prologue(adp, V_ADP_MODECHANGE, ENODEV); 1532 1533 mode = map_gen_mode_num(adp->va_type, 1534 adp->va_flags & V_ADP_COLOR, mode); 1535 if (vga_get_info(adp, mode, &info)) 1536 return EINVAL; 1537 1538#if VGA_DEBUG > 1 1539 printf("vga_set_mode(): setting mode %d\n", mode); 1540#endif 1541 1542 params.sig = V_STATE_SIG; 1543 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); 1544 1545 switch (mode) { 1546#ifdef VGA_WIDTH90 1547 case M_VGA_C90x60: case M_VGA_M90x60: 1548 set_width90(¶ms); 1549 /* FALLTHROUGH */ 1550#endif 1551 case M_VGA_C80x60: case M_VGA_M80x60: 1552 params.regs[2] = 0x08; 1553 params.regs[19] = 0x47; 1554 goto special_480l; 1555 1556#ifdef VGA_WIDTH90 1557 case M_VGA_C90x30: case M_VGA_M90x30: 1558 set_width90(¶ms); 1559 /* FALLTHROUGH */ 1560#endif 1561 case M_VGA_C80x30: case M_VGA_M80x30: 1562 params.regs[19] = 0x4f; 1563special_480l: 1564 params.regs[9] |= 0xc0; 1565 params.regs[16] = 0x08; 1566 params.regs[17] = 0x3e; 1567 params.regs[26] = 0xea; 1568 params.regs[28] = 0xdf; 1569 params.regs[31] = 0xe7; 1570 params.regs[32] = 0x04; 1571 goto setup_mode; 1572 1573#ifdef VGA_WIDTH90 1574 case M_VGA_C90x43: case M_VGA_M90x43: 1575 set_width90(¶ms); 1576 /* FALLTHROUGH */ 1577#endif 1578 case M_ENH_C80x43: case M_ENH_B80x43: 1579 params.regs[28] = 87; 1580 goto special_80x50; 1581 1582#ifdef VGA_WIDTH90 1583 case M_VGA_C90x50: case M_VGA_M90x50: 1584 set_width90(¶ms); 1585 /* FALLTHROUGH */ 1586#endif 1587 case M_VGA_C80x50: case M_VGA_M80x50: 1588special_80x50: 1589 params.regs[2] = 8; 1590 params.regs[19] = 7; 1591 goto setup_mode; 1592 1593#ifdef VGA_WIDTH90 1594 case M_VGA_C90x25: case M_VGA_M90x25: 1595 set_width90(¶ms); 1596 /* FALLTHROUGH */ 1597#endif 1598 case M_VGA_C40x25: case M_VGA_C80x25: 1599 case M_VGA_M80x25: 1600 case M_B40x25: case M_C40x25: 1601 case M_B80x25: case M_C80x25: 1602 case M_ENH_B40x25: case M_ENH_C40x25: 1603 case M_ENH_B80x25: case M_ENH_C80x25: 1604 case M_EGAMONO80x25: 1605 1606setup_mode: 1607 vga_load_state(adp, ¶ms); 1608 break; 1609 1610 case M_VGA_MODEX: 1611 /* "unchain" the VGA mode */ 1612 params.regs[5-1+0x04] &= 0xf7; 1613 params.regs[5-1+0x04] |= 0x04; 1614 /* turn off doubleword mode */ 1615 params.regs[10+0x14] &= 0xbf; 1616 /* turn off word addressing */ 1617 params.regs[10+0x17] |= 0x40; 1618 /* set logical screen width */ 1619 params.regs[10+0x13] = 80; 1620 /* set 240 lines */ 1621 params.regs[10+0x11] = 0x2c; 1622 params.regs[10+0x06] = 0x0d; 1623 params.regs[10+0x07] = 0x3e; 1624 params.regs[10+0x10] = 0xea; 1625 params.regs[10+0x11] = 0xac; 1626 params.regs[10+0x12] = 0xdf; 1627 params.regs[10+0x15] = 0xe7; 1628 params.regs[10+0x16] = 0x06; 1629 /* set vertical sync polarity to reflect aspect ratio */ 1630 params.regs[9] = 0xe3; 1631 goto setup_grmode; 1632 1633 case M_BG320: case M_CG320: case M_BG640: 1634 case M_CG320_D: case M_CG640_E: 1635 case M_CG640x350: case M_ENH_CG640: 1636 case M_BG640x480: case M_CG640x480: case M_VGA_CG320: 1637 1638setup_grmode: 1639 vga_load_state(adp, ¶ms); 1640 break; 1641 1642 default: 1643 return EINVAL; 1644 } 1645 1646 adp->va_mode = mode; 1647 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */ 1648 update_adapter_info(adp, &info); 1649 1650 /* move hardware cursor out of the way */ 1651 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 1652 1653 return 0; 1654#else /* VGA_NO_MODE_CHANGE */ 1655 return ENODEV; 1656#endif /* VGA_NO_MODE_CHANGE */ 1657} 1658 1659#ifndef VGA_NO_FONT_LOADING 1660 1661static void 1662set_font_mode(video_adapter_t *adp, u_char *buf) 1663{ 1664 u_char *mp; 1665 int s; 1666 1667 s = splhigh(); 1668 1669 /* save register values */ 1670 if (adp->va_type == KD_VGA) { 1671 outb(TSIDX, 0x02); buf[0] = inb(TSREG); 1672 outb(TSIDX, 0x04); buf[1] = inb(TSREG); 1673 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); 1674 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); 1675 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); 1676 inb(adp->va_crtc_addr + 6); 1677 outb(ATC, 0x10); buf[5] = inb(ATC + 1); 1678 } else /* if (adp->va_type == KD_EGA) */ { 1679 /* 1680 * EGA cannot be read; copy parameters from the mode parameter 1681 * table. 1682 */ 1683 mp = get_mode_param(adp->va_mode); 1684 buf[0] = mp[5 + 0x02 - 1]; 1685 buf[1] = mp[5 + 0x04 - 1]; 1686 buf[2] = mp[55 + 0x04]; 1687 buf[3] = mp[55 + 0x05]; 1688 buf[4] = mp[55 + 0x06]; 1689 buf[5] = mp[35 + 0x10]; 1690 } 1691 1692 /* setup vga for loading fonts */ 1693 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1694 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); 1695 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1696 outb(ATC, 0x20); /* enable palette */ 1697 1698#if VGA_SLOW_IOACCESS 1699#ifdef VGA_ALT_SEQACCESS 1700 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1701#endif 1702 outb(TSIDX, 0x02); outb(TSREG, 0x04); 1703 outb(TSIDX, 0x04); outb(TSREG, 0x07); 1704#ifdef VGA_ALT_SEQACCESS 1705 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1706#endif 1707 outb(GDCIDX, 0x04); outb(GDCREG, 0x02); 1708 outb(GDCIDX, 0x05); outb(GDCREG, 0x00); 1709 outb(GDCIDX, 0x06); outb(GDCREG, 0x04); 1710#else /* VGA_SLOW_IOACCESS */ 1711#ifdef VGA_ALT_SEQACCESS 1712 outw(TSIDX, 0x0100); 1713#endif 1714 outw(TSIDX, 0x0402); 1715 outw(TSIDX, 0x0704); 1716#ifdef VGA_ALT_SEQACCESS 1717 outw(TSIDX, 0x0300); 1718#endif 1719 outw(GDCIDX, 0x0204); 1720 outw(GDCIDX, 0x0005); 1721 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ 1722#endif /* VGA_SLOW_IOACCESS */ 1723 1724 splx(s); 1725} 1726 1727static void 1728set_normal_mode(video_adapter_t *adp, u_char *buf) 1729{ 1730 int s; 1731 1732 s = splhigh(); 1733 1734 /* setup vga for normal operation mode again */ 1735 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1736 outb(ATC, 0x10); outb(ATC, buf[5]); 1737 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 1738 outb(ATC, 0x20); /* enable palette */ 1739 1740#if VGA_SLOW_IOACCESS 1741#ifdef VGA_ALT_SEQACCESS 1742 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1743#endif 1744 outb(TSIDX, 0x02); outb(TSREG, buf[0]); 1745 outb(TSIDX, 0x04); outb(TSREG, buf[1]); 1746#ifdef VGA_ALT_SEQACCESS 1747 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1748#endif 1749 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); 1750 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); 1751 if (adp->va_crtc_addr == MONO_CRTC) { 1752 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); 1753 } else { 1754 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); 1755 } 1756#else /* VGA_SLOW_IOACCESS */ 1757#ifdef VGA_ALT_SEQACCESS 1758 outw(TSIDX, 0x0100); 1759#endif 1760 outw(TSIDX, 0x0002 | (buf[0] << 8)); 1761 outw(TSIDX, 0x0004 | (buf[1] << 8)); 1762#ifdef VGA_ALT_SEQACCESS 1763 outw(TSIDX, 0x0300); 1764#endif 1765 outw(GDCIDX, 0x0004 | (buf[2] << 8)); 1766 outw(GDCIDX, 0x0005 | (buf[3] << 8)); 1767 if (adp->va_crtc_addr == MONO_CRTC) 1768 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); 1769 else 1770 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); 1771#endif /* VGA_SLOW_IOACCESS */ 1772 1773 splx(s); 1774} 1775 1776#endif /* VGA_NO_FONT_LOADING */ 1777 1778/* 1779 * save_font(): 1780 * Read the font data in the requested font page from the video adapter. 1781 * 1782 * EGA/VGA 1783 */ 1784static int 1785vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1786 int ch, int count) 1787{ 1788#ifndef VGA_NO_FONT_LOADING 1789 u_char buf[PARAM_BUFSIZE]; 1790 u_int32_t segment; 1791 int c; 1792#ifdef VGA_ALT_SEQACCESS 1793 int s; 1794 u_char val = 0; 1795#endif 1796 1797 prologue(adp, V_ADP_FONT, ENODEV); 1798 1799 if (fontsize < 14) { 1800 /* FONT_8 */ 1801 fontsize = 8; 1802 } else if (fontsize >= 32) { 1803 fontsize = 32; 1804 } else if (fontsize >= 16) { 1805 /* FONT_16 */ 1806 fontsize = 16; 1807 } else { 1808 /* FONT_14 */ 1809 fontsize = 14; 1810 } 1811 1812 if (page < 0 || page >= 8) 1813 return EINVAL; 1814 segment = FONT_BUF + 0x4000*page; 1815 if (page > 3) 1816 segment -= 0xe000; 1817 1818#ifdef VGA_ALT_SEQACCESS 1819 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1820 s = splhigh(); 1821 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1822 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1823 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1824 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1825 splx(s); 1826 } 1827#endif 1828 1829 set_font_mode(adp, buf); 1830 if (fontsize == 32) { 1831 bcopy_fromio((uintptr_t)segment + ch*32, data, fontsize*count); 1832 } else { 1833 for (c = ch; count > 0; ++c, --count) { 1834 bcopy_fromio((uintptr_t)segment + c*32, data, fontsize); 1835 data += fontsize; 1836 } 1837 } 1838 set_normal_mode(adp, buf); 1839 1840#ifdef VGA_ALT_SEQACCESS 1841 if (adp->va_type == KD_VGA) { 1842 s = splhigh(); 1843 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1844 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1845 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1846 splx(s); 1847 } 1848#endif 1849 1850 return 0; 1851#else /* VGA_NO_FONT_LOADING */ 1852 return ENODEV; 1853#endif /* VGA_NO_FONT_LOADING */ 1854} 1855 1856/* 1857 * load_font(): 1858 * Set the font data in the requested font page. 1859 * NOTE: it appears that some recent video adapters do not support 1860 * the font page other than 0... XXX 1861 * 1862 * EGA/VGA 1863 */ 1864static int 1865vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, 1866 int ch, int count) 1867{ 1868#ifndef VGA_NO_FONT_LOADING 1869 u_char buf[PARAM_BUFSIZE]; 1870 u_int32_t segment; 1871 int c; 1872#ifdef VGA_ALT_SEQACCESS 1873 int s; 1874 u_char val = 0; 1875#endif 1876 1877 prologue(adp, V_ADP_FONT, ENODEV); 1878 1879 if (fontsize < 14) { 1880 /* FONT_8 */ 1881 fontsize = 8; 1882 } else if (fontsize >= 32) { 1883 fontsize = 32; 1884 } else if (fontsize >= 16) { 1885 /* FONT_16 */ 1886 fontsize = 16; 1887 } else { 1888 /* FONT_14 */ 1889 fontsize = 14; 1890 } 1891 1892 if (page < 0 || page >= 8) 1893 return EINVAL; 1894 segment = FONT_BUF + 0x4000*page; 1895 if (page > 3) 1896 segment -= 0xe000; 1897 1898#ifdef VGA_ALT_SEQACCESS 1899 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ 1900 s = splhigh(); 1901 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1902 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ 1903 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 1904 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1905 splx(s); 1906 } 1907#endif 1908 1909 set_font_mode(adp, buf); 1910 if (fontsize == 32) { 1911 bcopy_toio(data, (uintptr_t)segment + ch*32, fontsize*count); 1912 } else { 1913 for (c = ch; count > 0; ++c, --count) { 1914 bcopy_toio(data, (uintptr_t)segment + c*32, fontsize); 1915 data += fontsize; 1916 } 1917 } 1918 set_normal_mode(adp, buf); 1919 1920#ifdef VGA_ALT_SEQACCESS 1921 if (adp->va_type == KD_VGA) { 1922 s = splhigh(); 1923 outb(TSIDX, 0x00); outb(TSREG, 0x01); 1924 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ 1925 outb(TSIDX, 0x00); outb(TSREG, 0x03); 1926 splx(s); 1927 } 1928#endif 1929 1930 return 0; 1931#else /* VGA_NO_FONT_LOADING */ 1932 return ENODEV; 1933#endif /* VGA_NO_FONT_LOADING */ 1934} 1935 1936/* 1937 * show_font(): 1938 * Activate the requested font page. 1939 * NOTE: it appears that some recent video adapters do not support 1940 * the font page other than 0... XXX 1941 * 1942 * EGA/VGA 1943 */ 1944static int 1945vga_show_font(video_adapter_t *adp, int page) 1946{ 1947#ifndef VGA_NO_FONT_LOADING 1948 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; 1949 int s; 1950 1951 prologue(adp, V_ADP_FONT, ENODEV); 1952 if (page < 0 || page >= 8) 1953 return EINVAL; 1954 1955 s = splhigh(); 1956 outb(TSIDX, 0x03); outb(TSREG, cg[page]); 1957 splx(s); 1958 1959 return 0; 1960#else /* VGA_NO_FONT_LOADING */ 1961 return ENODEV; 1962#endif /* VGA_NO_FONT_LOADING */ 1963} 1964 1965/* 1966 * save_palette(): 1967 * Read DAC values. The values have expressed in 8 bits. 1968 * 1969 * VGA 1970 */ 1971static int 1972vga_save_palette(video_adapter_t *adp, u_char *palette) 1973{ 1974 int i; 1975 1976 prologue(adp, V_ADP_PALETTE, ENODEV); 1977 1978 /* 1979 * We store 8 bit values in the palette buffer, while the standard 1980 * VGA has 6 bit DAC . 1981 */ 1982 outb(PALRADR, 0x00); 1983 for (i = 0; i < 256*3; ++i) 1984 palette[i] = inb(PALDATA) << 2; 1985 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 1986 return 0; 1987} 1988 1989static int 1990vga_save_palette2(video_adapter_t *adp, int base, int count, 1991 u_char *r, u_char *g, u_char *b) 1992{ 1993 int i; 1994 1995 prologue(adp, V_ADP_PALETTE, ENODEV); 1996 1997 outb(PALRADR, base); 1998 for (i = 0; i < count; ++i) { 1999 r[i] = inb(PALDATA) << 2; 2000 g[i] = inb(PALDATA) << 2; 2001 b[i] = inb(PALDATA) << 2; 2002 } 2003 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 2004 return 0; 2005} 2006 2007/* 2008 * load_palette(): 2009 * Set DAC values. 2010 * 2011 * VGA 2012 */ 2013static int 2014vga_load_palette(video_adapter_t *adp, u_char *palette) 2015{ 2016 int i; 2017 2018 prologue(adp, V_ADP_PALETTE, ENODEV); 2019 2020 outb(PIXMASK, 0xff); /* no pixelmask */ 2021 outb(PALWADR, 0x00); 2022 for (i = 0; i < 256*3; ++i) 2023 outb(PALDATA, palette[i] >> 2); 2024 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 2025 outb(ATC, 0x20); /* enable palette */ 2026 return 0; 2027} 2028 2029static int 2030vga_load_palette2(video_adapter_t *adp, int base, int count, 2031 u_char *r, u_char *g, u_char *b) 2032{ 2033 int i; 2034 2035 prologue(adp, V_ADP_PALETTE, ENODEV); 2036 2037 outb(PIXMASK, 0xff); /* no pixelmask */ 2038 outb(PALWADR, base); 2039 for (i = 0; i < count; ++i) { 2040 outb(PALDATA, r[i] >> 2); 2041 outb(PALDATA, g[i] >> 2); 2042 outb(PALDATA, b[i] >> 2); 2043 } 2044 inb(adp->va_crtc_addr + 6); /* reset flip/flop */ 2045 outb(ATC, 0x20); /* enable palette */ 2046 return 0; 2047} 2048 2049/* 2050 * set_border(): 2051 * Change the border color. 2052 * 2053 * CGA/EGA/VGA 2054 */ 2055static int 2056vga_set_border(video_adapter_t *adp, int color) 2057{ 2058 prologue(adp, V_ADP_BORDER, ENODEV); 2059 2060 switch (adp->va_type) { 2061 case KD_EGA: 2062 case KD_VGA: 2063 inb(adp->va_crtc_addr + 6); /* reset flip-flop */ 2064 outb(ATC, 0x31); outb(ATC, color & 0xff); 2065 break; 2066 case KD_CGA: 2067 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ 2068 break; 2069 case KD_MONO: 2070 case KD_HERCULES: 2071 default: 2072 break; 2073 } 2074 return 0; 2075} 2076 2077/* 2078 * save_state(): 2079 * Read video register values. 2080 * NOTE: this function only reads the standard EGA/VGA registers. 2081 * any extra/extended registers of SVGA adapters are not saved. 2082 * 2083 * VGA 2084 */ 2085static int 2086vga_save_state(video_adapter_t *adp, void *p, size_t size) 2087{ 2088 video_info_t info; 2089 u_char *buf; 2090 int crtc_addr; 2091 int i, j; 2092 int s; 2093 2094 if (size == 0) { 2095 /* return the required buffer size */ 2096 prologue(adp, V_ADP_STATESAVE, 0); 2097 return sizeof(adp_state_t); 2098 } else { 2099 prologue(adp, V_ADP_STATESAVE, ENODEV); 2100 if (size < sizeof(adp_state_t)) 2101 return EINVAL; 2102 } 2103 2104 ((adp_state_t *)p)->sig = V_STATE_SIG; 2105 buf = ((adp_state_t *)p)->regs; 2106 bzero(buf, V_MODE_PARAM_SIZE); 2107 crtc_addr = adp->va_crtc_addr; 2108 2109 s = splhigh(); 2110 2111 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 2112 for (i = 0, j = 5; i < 4; i++) { 2113 outb(TSIDX, i + 1); 2114 buf[j++] = inb(TSREG); 2115 } 2116 buf[9] = inb(MISC + 10); /* dot-clock */ 2117 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 2118 2119 for (i = 0, j = 10; i < 25; i++) { /* crtc */ 2120 outb(crtc_addr, i); 2121 buf[j++] = inb(crtc_addr + 1); 2122 } 2123 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ 2124 inb(crtc_addr + 6); /* reset flip-flop */ 2125 outb(ATC, i); 2126 buf[j++] = inb(ATC + 1); 2127 } 2128 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ 2129 outb(GDCIDX, i); 2130 buf[j++] = inb(GDCREG); 2131 } 2132 inb(crtc_addr + 6); /* reset flip-flop */ 2133 outb(ATC, 0x20); /* enable palette */ 2134 2135 splx(s); 2136 2137#if 1 2138 if (vga_get_info(adp, adp->va_mode, &info) == 0) { 2139 if (info.vi_flags & V_INFO_GRAPHICS) { 2140 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ 2141 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ 2142 } else { 2143 buf[0] = info.vi_width; /* COLS */ 2144 buf[1] = info.vi_height - 1; /* ROWS */ 2145 } 2146 buf[2] = info.vi_cheight; /* POINTS */ 2147 } else { 2148 /* XXX: shouldn't be happening... */ 2149 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", 2150 adp->va_unit, adp->va_name); 2151 } 2152#else 2153 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ 2154 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ 2155 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ 2156 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); 2157 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); 2158#endif 2159 2160 return 0; 2161} 2162 2163/* 2164 * load_state(): 2165 * Set video registers at once. 2166 * NOTE: this function only updates the standard EGA/VGA registers. 2167 * any extra/extended registers of SVGA adapters are not changed. 2168 * 2169 * EGA/VGA 2170 */ 2171static int 2172vga_load_state(video_adapter_t *adp, void *p) 2173{ 2174 u_char *buf; 2175 int crtc_addr; 2176 int s; 2177 int i; 2178 2179 prologue(adp, V_ADP_STATELOAD, ENODEV); 2180 if (((adp_state_t *)p)->sig != V_STATE_SIG) 2181 return EINVAL; 2182 2183 buf = ((adp_state_t *)p)->regs; 2184 crtc_addr = adp->va_crtc_addr; 2185 2186#if VGA_DEBUG > 1 2187 dump_buffer(buf, V_MODE_PARAM_SIZE); 2188#endif 2189 2190 s = splhigh(); 2191 2192 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ 2193 for (i = 0; i < 4; ++i) { /* program sequencer */ 2194 outb(TSIDX, i + 1); 2195 outb(TSREG, buf[i + 5]); 2196 } 2197 outb(MISC, buf[9]); /* set dot-clock */ 2198 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ 2199 outb(crtc_addr, 0x11); 2200 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); 2201 for (i = 0; i < 25; ++i) { /* program crtc */ 2202 outb(crtc_addr, i); 2203 outb(crtc_addr + 1, buf[i + 10]); 2204 } 2205 inb(crtc_addr+6); /* reset flip-flop */ 2206 for (i = 0; i < 20; ++i) { /* program attribute ctrl */ 2207 outb(ATC, i); 2208 outb(ATC, buf[i + 35]); 2209 } 2210 for (i = 0; i < 9; ++i) { /* program graph data ctrl */ 2211 outb(GDCIDX, i); 2212 outb(GDCREG, buf[i + 55]); 2213 } 2214 inb(crtc_addr + 6); /* reset flip-flop */ 2215 outb(ATC, 0x20); /* enable palette */ 2216 2217#if notyet /* a temporary workaround for kernel panic, XXX */ 2218#ifndef VGA_NO_BIOS 2219 if (adp->va_unit == V_ADP_PRIMARY) { 2220 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ 2221 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ 2222 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ 2223#if 0 2224 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); 2225 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); 2226#endif 2227 } 2228#endif /* VGA_NO_BIOS */ 2229#endif /* notyet */ 2230 2231 splx(s); 2232 return 0; 2233} 2234 2235/* 2236 * set_origin(): 2237 * Change the origin (window mapping) of the banked frame buffer. 2238 */ 2239static int 2240vga_set_origin(video_adapter_t *adp, off_t offset) 2241{ 2242 /* 2243 * The standard video modes do not require window mapping; 2244 * always return error. 2245 */ 2246 return ENODEV; 2247} 2248 2249/* 2250 * read_hw_cursor(): 2251 * Read the position of the hardware text cursor. 2252 * 2253 * all adapters 2254 */ 2255static int 2256vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 2257{ 2258 u_int16_t off; 2259 int s; 2260 2261 if (!vga_init_done) 2262 return ENXIO; 2263 2264 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2265 return ENODEV; 2266 2267 s = spltty(); 2268 outb(adp->va_crtc_addr, 14); 2269 off = inb(adp->va_crtc_addr + 1); 2270 outb(adp->va_crtc_addr, 15); 2271 off = (off << 8) | inb(adp->va_crtc_addr + 1); 2272 splx(s); 2273 2274 *row = off / adp->va_info.vi_width; 2275 *col = off % adp->va_info.vi_width; 2276 2277 return 0; 2278} 2279 2280/* 2281 * set_hw_cursor(): 2282 * Move the hardware text cursor. If col and row are both -1, 2283 * the cursor won't be shown. 2284 * 2285 * all adapters 2286 */ 2287static int 2288vga_set_hw_cursor(video_adapter_t *adp, int col, int row) 2289{ 2290 u_int16_t off; 2291 int s; 2292 2293 if (!vga_init_done) 2294 return ENXIO; 2295 2296 if ((col == -1) && (row == -1)) { 2297 off = -1; 2298 } else { 2299 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 2300 return ENODEV; 2301 off = row*adp->va_info.vi_width + col; 2302 } 2303 2304 s = spltty(); 2305 outb(adp->va_crtc_addr, 14); 2306 outb(adp->va_crtc_addr + 1, off >> 8); 2307 outb(adp->va_crtc_addr, 15); 2308 outb(adp->va_crtc_addr + 1, off & 0x00ff); 2309 splx(s); 2310 2311 return 0; 2312} 2313 2314/* 2315 * set_hw_cursor_shape(): 2316 * Change the shape of the hardware text cursor. If the height is 2317 * zero or negative, the cursor won't be shown. 2318 * 2319 * all adapters 2320 */ 2321static int 2322vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 2323 int celsize, int blink) 2324{ 2325 int s; 2326 2327 if (!vga_init_done) 2328 return ENXIO; 2329 2330 s = spltty(); 2331 switch (adp->va_type) { 2332 case KD_VGA: 2333 case KD_CGA: 2334 case KD_MONO: 2335 case KD_HERCULES: 2336 default: 2337 if (height <= 0) { 2338 /* make the cursor invisible */ 2339 outb(adp->va_crtc_addr, 10); 2340 outb(adp->va_crtc_addr + 1, 32); 2341 outb(adp->va_crtc_addr, 11); 2342 outb(adp->va_crtc_addr + 1, 0); 2343 } else { 2344 outb(adp->va_crtc_addr, 10); 2345 outb(adp->va_crtc_addr + 1, celsize - base - height); 2346 outb(adp->va_crtc_addr, 11); 2347 outb(adp->va_crtc_addr + 1, celsize - base - 1); 2348 } 2349 break; 2350 case KD_EGA: 2351 if (height <= 0) { 2352 /* make the cursor invisible */ 2353 outb(adp->va_crtc_addr, 10); 2354 outb(adp->va_crtc_addr + 1, celsize); 2355 outb(adp->va_crtc_addr, 11); 2356 outb(adp->va_crtc_addr + 1, 0); 2357 } else { 2358 outb(adp->va_crtc_addr, 10); 2359 outb(adp->va_crtc_addr + 1, celsize - base - height); 2360 outb(adp->va_crtc_addr, 11); 2361 outb(adp->va_crtc_addr + 1, celsize - base); 2362 } 2363 break; 2364 } 2365 splx(s); 2366 2367 return 0; 2368} 2369 2370/* 2371 * blank_display() 2372 * Put the display in power save/power off mode. 2373 * 2374 * all adapters 2375 */ 2376static int 2377vga_blank_display(video_adapter_t *adp, int mode) 2378{ 2379 u_char val; 2380 int s; 2381 2382 s = splhigh(); 2383 switch (adp->va_type) { 2384 case KD_VGA: 2385 switch (mode) { 2386 case V_DISPLAY_SUSPEND: 2387 case V_DISPLAY_STAND_BY: 2388 outb(TSIDX, 0x01); 2389 val = inb(TSREG); 2390 outb(TSIDX, 0x01); 2391 outb(TSREG, val | 0x20); 2392 outb(adp->va_crtc_addr, 0x17); 2393 val = inb(adp->va_crtc_addr + 1); 2394 outb(adp->va_crtc_addr + 1, val & ~0x80); 2395 break; 2396 case V_DISPLAY_BLANK: 2397 outb(TSIDX, 0x01); 2398 val = inb(TSREG); 2399 outb(TSIDX, 0x01); 2400 outb(TSREG, val | 0x20); 2401 break; 2402 case V_DISPLAY_ON: 2403 outb(TSIDX, 0x01); 2404 val = inb(TSREG); 2405 outb(TSIDX, 0x01); 2406 outb(TSREG, val & 0xDF); 2407 outb(adp->va_crtc_addr, 0x17); 2408 val = inb(adp->va_crtc_addr + 1); 2409 outb(adp->va_crtc_addr + 1, val | 0x80); 2410 break; 2411 } 2412 break; 2413 2414 case KD_EGA: 2415 /* no support yet */ 2416 splx(s); 2417 return ENODEV; 2418 2419 case KD_CGA: 2420 switch (mode) { 2421 case V_DISPLAY_SUSPEND: 2422 case V_DISPLAY_STAND_BY: 2423 case V_DISPLAY_BLANK: 2424 outb(adp->va_crtc_addr + 4, 0x25); 2425 break; 2426 case V_DISPLAY_ON: 2427 outb(adp->va_crtc_addr + 4, 0x2d); 2428 break; 2429 } 2430 break; 2431 2432 case KD_MONO: 2433 case KD_HERCULES: 2434 switch (mode) { 2435 case V_DISPLAY_SUSPEND: 2436 case V_DISPLAY_STAND_BY: 2437 case V_DISPLAY_BLANK: 2438 outb(adp->va_crtc_addr + 4, 0x21); 2439 break; 2440 case V_DISPLAY_ON: 2441 outb(adp->va_crtc_addr + 4, 0x29); 2442 break; 2443 } 2444 break; 2445 default: 2446 break; 2447 } 2448 splx(s); 2449 2450 return 0; 2451} 2452 2453/* 2454 * mmap(): 2455 * Mmap frame buffer. 2456 * 2457 * all adapters 2458 */ 2459static int 2460vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr, 2461 int prot) 2462{ 2463 if (adp->va_info.vi_flags & V_INFO_LINEAR) 2464 return -1; 2465 2466#if VGA_DEBUG > 0 2467 printf("vga_mmap_buf(): window:0x%jx, offset:0x%jx\n", 2468 (uintmax_t)adp->va_info.vi_window, (uintmax_t)offset); 2469#endif 2470 2471 /* XXX: is this correct? */ 2472 if (offset > adp->va_window_size - PAGE_SIZE) 2473 return -1; 2474 2475 *paddr = adp->va_info.vi_window + offset; 2476 return 0; 2477} 2478 2479#ifndef VGA_NO_MODE_CHANGE 2480 2481static void 2482planar_fill(video_adapter_t *adp, int val) 2483{ 2484 int length; 2485 int at; /* position in the frame buffer */ 2486 int l; 2487 2488 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */ 2489 outw(GDCIDX, 0x0003); /* data rotate/function select */ 2490 outw(GDCIDX, 0x0f01); /* set/reset enable */ 2491 outw(GDCIDX, 0xff08); /* bit mask */ 2492 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */ 2493 at = 0; 2494 length = adp->va_line_width*adp->va_info.vi_height; 2495 while (length > 0) { 2496 l = imin(length, adp->va_window_size); 2497 (*vidsw[adp->va_index]->set_win_org)(adp, at); 2498 bzero_io(adp->va_window, l); 2499 length -= l; 2500 at += l; 2501 } 2502 outw(GDCIDX, 0x0000); /* set/reset */ 2503 outw(GDCIDX, 0x0001); /* set/reset enable */ 2504} 2505 2506static void 2507packed_fill(video_adapter_t *adp, int val) 2508{ 2509 int length; 2510 int at; /* position in the frame buffer */ 2511 int l; 2512 2513 at = 0; 2514 length = adp->va_line_width*adp->va_info.vi_height; 2515 while (length > 0) { 2516 l = imin(length, adp->va_window_size); 2517 (*vidsw[adp->va_index]->set_win_org)(adp, at); 2518 fill_io(val, adp->va_window, l); 2519 length -= l; 2520 at += l; 2521 } 2522} 2523 2524static void 2525direct_fill(video_adapter_t *adp, int val) 2526{ 2527 int length; 2528 int at; /* position in the frame buffer */ 2529 int l; 2530 2531 at = 0; 2532 length = adp->va_line_width*adp->va_info.vi_height; 2533 while (length > 0) { 2534 l = imin(length, adp->va_window_size); 2535 (*vidsw[adp->va_index]->set_win_org)(adp, at); 2536 switch (adp->va_info.vi_pixel_size) { 2537 case sizeof(u_int16_t): 2538 fillw_io(val, adp->va_window, l/sizeof(u_int16_t)); 2539 break; 2540 case 3: 2541 /* FIXME */ 2542 break; 2543 case sizeof(u_int32_t): 2544 filll_io(val, adp->va_window, l/sizeof(u_int32_t)); 2545 break; 2546 } 2547 length -= l; 2548 at += l; 2549 } 2550} 2551 2552static int 2553vga_clear(video_adapter_t *adp) 2554{ 2555 switch (adp->va_info.vi_mem_model) { 2556 case V_INFO_MM_TEXT: 2557 /* do nothing? XXX */ 2558 break; 2559 case V_INFO_MM_PLANAR: 2560 planar_fill(adp, 0); 2561 break; 2562 case V_INFO_MM_PACKED: 2563 packed_fill(adp, 0); 2564 break; 2565 case V_INFO_MM_DIRECT: 2566 direct_fill(adp, 0); 2567 break; 2568 } 2569 return 0; 2570} 2571 2572#ifdef notyet 2573static void 2574planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 2575{ 2576 int banksize; 2577 int bank; 2578 int pos; 2579 int offset; /* offset within window */ 2580 int bx; 2581 int l; 2582 2583 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */ 2584 outw(GDCIDX, 0x0003); /* data rotate/function select */ 2585 outw(GDCIDX, 0x0f01); /* set/reset enable */ 2586 outw(GDCIDX, 0xff08); /* bit mask */ 2587 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */ 2588 2589 banksize = adp->va_window_size; 2590 bank = -1; 2591 while (cy > 0) { 2592 pos = adp->va_line_width*y + x/8; 2593 if (bank != pos/banksize) { 2594 (*vidsw[adp->va_index]->set_win_org)(adp, pos); 2595 bank = pos/banksize; 2596 } 2597 offset = pos%banksize; 2598 bx = (x + cx)/8 - x/8; 2599 if (x % 8) { 2600 outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08); 2601 writeb(adp->va_window + offset, 0); 2602 ++offset; 2603 --bx; 2604 if (offset >= banksize) { 2605 offset = 0; 2606 ++bank; /* next bank */ 2607 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); 2608 } 2609 outw(GDCIDX, 0xff08); /* bit mask */ 2610 } 2611 while (bx > 0) { 2612 l = imin(bx, banksize); 2613 bzero_io(adp->va_window + offset, l); 2614 offset += l; 2615 bx -= l; 2616 if (offset >= banksize) { 2617 offset = 0; 2618 ++bank; /* next bank */ 2619 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); 2620 } 2621 } 2622 if ((x + cx) % 8) { 2623 outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08); 2624 writeb(adp->va_window + offset, 0); 2625 ++offset; 2626 if (offset >= banksize) { 2627 offset = 0; 2628 ++bank; /* next bank */ 2629 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); 2630 } 2631 outw(GDCIDX, 0xff08); /* bit mask */ 2632 } 2633 ++y; 2634 --cy; 2635 } 2636 2637 outw(GDCIDX, 0xff08); /* bit mask */ 2638 outw(GDCIDX, 0x0000); /* set/reset */ 2639 outw(GDCIDX, 0x0001); /* set/reset enable */ 2640} 2641 2642static void 2643packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 2644{ 2645 int banksize; 2646 int bank; 2647 int pos; 2648 int offset; /* offset within window */ 2649 int end; 2650 2651 banksize = adp->va_window_size; 2652 bank = -1; 2653 cx *= adp->va_info.vi_pixel_size; 2654 while (cy > 0) { 2655 pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size; 2656 if (bank != pos/banksize) { 2657 (*vidsw[adp->va_index]->set_win_org)(adp, pos); 2658 bank = pos/banksize; 2659 } 2660 offset = pos%banksize; 2661 end = imin(offset + cx, banksize); 2662 fill_io(val, adp->va_window + offset, 2663 (end - offset)/adp->va_info.vi_pixel_size); 2664 /* the line may cross the window boundary */ 2665 if (offset + cx > banksize) { 2666 ++bank; /* next bank */ 2667 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); 2668 end = offset + cx - banksize; 2669 fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size); 2670 } 2671 ++y; 2672 --cy; 2673 } 2674} 2675 2676static void 2677direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 2678{ 2679 int banksize; 2680 int bank; 2681 int pos; 2682 int offset; /* offset within window */ 2683 int end; 2684 2685 /* 2686 * XXX: the function assumes that banksize is a muliple of 2687 * sizeof(u_int16_t). 2688 */ 2689 banksize = adp->va_window_size; 2690 bank = -1; 2691 cx *= sizeof(u_int16_t); 2692 while (cy > 0) { 2693 pos = adp->va_line_width*y + x*sizeof(u_int16_t); 2694 if (bank != pos/banksize) { 2695 (*vidsw[adp->va_index]->set_win_org)(adp, pos); 2696 bank = pos/banksize; 2697 } 2698 offset = pos%banksize; 2699 end = imin(offset + cx, banksize); 2700 fillw_io(val, adp->va_window + offset, 2701 (end - offset)/sizeof(u_int16_t)); 2702 /* the line may cross the window boundary */ 2703 if (offset + cx > banksize) { 2704 ++bank; /* next bank */ 2705 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); 2706 end = offset + cx - banksize; 2707 fillw_io(val, adp->va_window, end/sizeof(u_int16_t)); 2708 } 2709 ++y; 2710 --cy; 2711 } 2712} 2713 2714static void 2715direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 2716{ 2717 int banksize; 2718 int bank; 2719 int pos; 2720 int offset; /* offset within window */ 2721 int end; 2722 int i; 2723 int j; 2724 u_int8_t b[3]; 2725 2726 b[0] = val & 0x0000ff; 2727 b[1] = (val >> 8) & 0x0000ff; 2728 b[2] = (val >> 16) & 0x0000ff; 2729 banksize = adp->va_window_size; 2730 bank = -1; 2731 cx *= 3; 2732 while (cy > 0) { 2733 pos = adp->va_line_width*y + x*3; 2734 if (bank != pos/banksize) { 2735 (*vidsw[adp->va_index]->set_win_org)(adp, pos); 2736 bank = pos/banksize; 2737 } 2738 offset = pos%banksize; 2739 end = imin(offset + cx, banksize); 2740 for (i = 0, j = offset; j < end; i = (++i)%3, ++j) { 2741 writeb(adp->va_window + j, b[i]); 2742 } 2743 /* the line may cross the window boundary */ 2744 if (offset + cx >= banksize) { 2745 ++bank; /* next bank */ 2746 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); 2747 j = 0; 2748 end = offset + cx - banksize; 2749 for (; j < end; i = (++i)%3, ++j) { 2750 writeb(adp->va_window + j, b[i]); 2751 } 2752 } 2753 ++y; 2754 --cy; 2755 } 2756} 2757 2758static void 2759direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 2760{ 2761 int banksize; 2762 int bank; 2763 int pos; 2764 int offset; /* offset within window */ 2765 int end; 2766 2767 /* 2768 * XXX: the function assumes that banksize is a muliple of 2769 * sizeof(u_int32_t). 2770 */ 2771 banksize = adp->va_window_size; 2772 bank = -1; 2773 cx *= sizeof(u_int32_t); 2774 while (cy > 0) { 2775 pos = adp->va_line_width*y + x*sizeof(u_int32_t); 2776 if (bank != pos/banksize) { 2777 (*vidsw[adp->va_index]->set_win_org)(adp, pos); 2778 bank = pos/banksize; 2779 } 2780 offset = pos%banksize; 2781 end = imin(offset + cx, banksize); 2782 filll_io(val, adp->va_window + offset, 2783 (end - offset)/sizeof(u_int32_t)); 2784 /* the line may cross the window boundary */ 2785 if (offset + cx > banksize) { 2786 ++bank; /* next bank */ 2787 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); 2788 end = offset + cx - banksize; 2789 filll_io(val, adp->va_window, end/sizeof(u_int32_t)); 2790 } 2791 ++y; 2792 --cy; 2793 } 2794} 2795 2796static int 2797vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 2798{ 2799 switch (adp->va_info.vi_mem_model) { 2800 case V_INFO_MM_TEXT: 2801 /* do nothing? XXX */ 2802 break; 2803 case V_INFO_MM_PLANAR: 2804 planar_fill_rect(adp, val, x, y, cx, cy); 2805 break; 2806 case V_INFO_MM_PACKED: 2807 packed_fill_rect(adp, val, x, y, cx, cy); 2808 break; 2809 case V_INFO_MM_DIRECT: 2810 switch (adp->va_info.vi_pixel_size) { 2811 case sizeof(u_int16_t): 2812 direct_fill_rect16(adp, val, x, y, cx, cy); 2813 break; 2814 case 3: 2815 direct_fill_rect24(adp, val, x, y, cx, cy); 2816 break; 2817 case sizeof(u_int32_t): 2818 direct_fill_rect32(adp, val, x, y, cx, cy); 2819 break; 2820 } 2821 break; 2822 } 2823 return 0; 2824} 2825#else /* !notyet */ 2826static int 2827vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 2828{ 2829 return ENODEV; 2830} 2831#endif /* notyet */ 2832 2833static int 2834vga_bitblt(video_adapter_t *adp,...) 2835{ 2836 /* FIXME */ 2837 return ENODEV; 2838} 2839 2840#endif /* !VGA_NO_MODE_CHANGE */ 2841 2842static int 2843get_palette(video_adapter_t *adp, int base, int count, 2844 u_char *red, u_char *green, u_char *blue, u_char *trans) 2845{ 2846 u_char *r; 2847 u_char *g; 2848 u_char *b; 2849 2850 if ((base < 0) || (base >= 256) || (base + count > 256)) 2851 return EINVAL; 2852 2853 r = malloc(count*3, M_DEVBUF, M_WAITOK); 2854 g = r + count; 2855 b = g + count; 2856 if (vga_save_palette2(adp, base, count, r, g, b)) { 2857 free(r, M_DEVBUF); 2858 return ENODEV; 2859 } 2860 copyout(r, red, count); 2861 copyout(g, green, count); 2862 copyout(b, blue, count); 2863 if (trans != NULL) { 2864 bzero(r, count); 2865 copyout(r, trans, count); 2866 } 2867 free(r, M_DEVBUF); 2868 2869 return 0; 2870} 2871 2872static int 2873set_palette(video_adapter_t *adp, int base, int count, 2874 u_char *red, u_char *green, u_char *blue, u_char *trans) 2875{ 2876 u_char *r; 2877 u_char *g; 2878 u_char *b; 2879 int err; 2880 2881 if ((base < 0) || (base >= 256) || (base + count > 256)) 2882 return EINVAL; 2883 2884 r = malloc(count*3, M_DEVBUF, M_WAITOK); 2885 g = r + count; 2886 b = g + count; 2887 copyin(red, r, count); 2888 copyin(green, g, count); 2889 copyin(blue, b, count); 2890 err = vga_load_palette2(adp, base, count, r, g, b); 2891 free(r, M_DEVBUF); 2892 2893 return (err ? ENODEV : 0); 2894} 2895 2896static int 2897vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) 2898{ 2899 switch (cmd) { 2900 case FBIO_GETWINORG: /* get frame buffer window origin */ 2901 *(u_int *)arg = 0; 2902 return 0; 2903 2904 case FBIO_SETWINORG: /* set frame buffer window origin */ 2905 return ENODEV; 2906 2907 case FBIO_SETDISPSTART: /* set display start address */ 2908 return (set_display_start(adp, 2909 ((video_display_start_t *)arg)->x, 2910 ((video_display_start_t *)arg)->y) 2911 ? ENODEV : 0); 2912 2913 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */ 2914 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0); 2915 2916 case FBIO_GETPALETTE: /* get color palette */ 2917 return get_palette(adp, ((video_color_palette_t *)arg)->index, 2918 ((video_color_palette_t *)arg)->count, 2919 ((video_color_palette_t *)arg)->red, 2920 ((video_color_palette_t *)arg)->green, 2921 ((video_color_palette_t *)arg)->blue, 2922 ((video_color_palette_t *)arg)->transparent); 2923 2924 case FBIO_SETPALETTE: /* set color palette */ 2925 return set_palette(adp, ((video_color_palette_t *)arg)->index, 2926 ((video_color_palette_t *)arg)->count, 2927 ((video_color_palette_t *)arg)->red, 2928 ((video_color_palette_t *)arg)->green, 2929 ((video_color_palette_t *)arg)->blue, 2930 ((video_color_palette_t *)arg)->transparent); 2931 2932 case FBIOGTYPE: /* get frame buffer type info. */ 2933 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type); 2934 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height; 2935 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width; 2936 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth; 2937 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8)) 2938 ((struct fbtype *)arg)->fb_cmsize = 0; 2939 else 2940 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth; 2941 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size; 2942 return 0; 2943 2944 case FBIOGETCMAP: /* get color palette */ 2945 return get_palette(adp, ((struct fbcmap *)arg)->index, 2946 ((struct fbcmap *)arg)->count, 2947 ((struct fbcmap *)arg)->red, 2948 ((struct fbcmap *)arg)->green, 2949 ((struct fbcmap *)arg)->blue, NULL); 2950 2951 case FBIOPUTCMAP: /* set color palette */ 2952 return set_palette(adp, ((struct fbcmap *)arg)->index, 2953 ((struct fbcmap *)arg)->count, 2954 ((struct fbcmap *)arg)->red, 2955 ((struct fbcmap *)arg)->green, 2956 ((struct fbcmap *)arg)->blue, NULL); 2957 2958 default: 2959 return fb_commonioctl(adp, cmd, arg); 2960 } 2961} 2962 2963static void 2964dump_buffer(u_char *buf, size_t len) 2965{ 2966 int i; 2967 2968 for(i = 0; i < len;) { 2969 printf("%02x ", buf[i]); 2970 if ((++i % 16) == 0) 2971 printf("\n"); 2972 } 2973} 2974 2975/* 2976 * diag(): 2977 * Print some information about the video adapter and video modes, 2978 * with requested level of details. 2979 * 2980 * all adapters 2981 */ 2982static int 2983vga_diag(video_adapter_t *adp, int level) 2984{ 2985 u_char *mp; 2986#if FB_DEBUG > 1 2987 video_info_t info; 2988 int i; 2989#endif 2990 2991 if (!vga_init_done) 2992 return ENXIO; 2993 2994#if FB_DEBUG > 1 2995#ifndef VGA_NO_BIOS 2996 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", 2997 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); 2998 printf("vga: CRTC:0x%x, video option:0x%02x, ", 2999 readw(BIOS_PADDRTOVADDR(0x463)), 3000 readb(BIOS_PADDRTOVADDR(0x487))); 3001 printf("rows:%d, cols:%d, font height:%d\n", 3002 readb(BIOS_PADDRTOVADDR(0x44a)), 3003 readb(BIOS_PADDRTOVADDR(0x484)) + 1, 3004 readb(BIOS_PADDRTOVADDR(0x485))); 3005#endif /* VGA_NO_BIOS */ 3006#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 3007 printf("vga: param table EGA/VGA:%p", video_mode_ptr); 3008 printf(", CGA/MDA:%p\n", video_mode_ptr2); 3009 printf("vga: rows_offset:%d\n", rows_offset); 3010#endif 3011#endif /* FB_DEBUG > 1 */ 3012 3013 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level); 3014 3015#if FB_DEBUG > 1 3016 if (adp->va_flags & V_ADP_MODECHANGE) { 3017 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { 3018 if (bios_vmode[i].vi_mode == NA) 3019 continue; 3020 if (get_mode_param(bios_vmode[i].vi_mode) == NULL) 3021 continue; 3022 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level); 3023 } 3024 } else { 3025 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ 3026 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level); 3027 } 3028#endif /* FB_DEBUG > 1 */ 3029 3030 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) 3031 return 0; 3032#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) 3033 if (video_mode_ptr == NULL) 3034 printf("vga%d: %s: WARNING: video mode switching is not " 3035 "fully supported on this adapter\n", 3036 adp->va_unit, adp->va_name); 3037#endif 3038 if (level <= 0) 3039 return 0; 3040 3041 if (adp->va_type == KD_VGA) { 3042 printf("VGA parameters upon power-up\n"); 3043 dump_buffer(adpstate.regs, sizeof(adpstate.regs)); 3044 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); 3045 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); 3046 } 3047 3048 mp = get_mode_param(adp->va_initial_mode); 3049 if (mp == NULL) /* this shouldn't be happening */ 3050 return 0; 3051 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); 3052 dump_buffer(mp, V_MODE_PARAM_SIZE); 3053 3054 return 0; 3055} 3056