2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * Copyright (c) 1992-1998 Søren Schmidt
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
39 #include "opt_syscons.h" /* should be removed in the future, XXX */
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
45 #include <sys/fcntl.h>
46 #include <sys/malloc.h>
50 #include <vm/vm_param.h>
53 #include <machine/md_var.h>
54 #if defined(__i386__) || defined(__amd64__)
55 #include <machine/pc/bios.h>
57 #include <machine/bus.h>
59 #include <dev/fb/fbreg.h>
60 #include <dev/fb/vgareg.h>
62 #include <isa/isareg.h>
68 /* XXX machine/pc/bios.h has got too much i386-specific stuff in it */
69 #ifndef BIOS_PADDRTOVADDR
70 #define BIOS_PADDRTOVADDR(x) (x)
74 vga_probe_unit(int unit, video_adapter_t *buf, int flags)
80 sw = vid_get_switch(VGA_DRIVER_NAME);
83 error = (*sw->probe)(unit, &adp, NULL, flags);
86 bcopy(adp, buf, sizeof(*buf));
91 vga_attach_unit(int unit, vga_softc_t *sc, int flags)
96 sw = vid_get_switch(VGA_DRIVER_NAME);
100 error = (*sw->probe)(unit, &sc->adp, NULL, flags);
103 return (*sw->init)(unit, sc->adp, flags);
106 /* cdev driver functions */
108 #ifdef FB_INSTALL_CDEV
111 vga_open(struct cdev *dev, vga_softc_t *sc, int flag, int mode, struct thread *td)
115 if (mode & (O_CREAT | O_APPEND | O_TRUNC))
118 return genfbopen(&sc->gensc, sc->adp, flag, mode, td);
122 vga_close(struct cdev *dev, vga_softc_t *sc, int flag, int mode, struct thread *td)
124 return genfbclose(&sc->gensc, sc->adp, flag, mode, td);
128 vga_read(struct cdev *dev, vga_softc_t *sc, struct uio *uio, int flag)
130 return genfbread(&sc->gensc, sc->adp, uio, flag);
134 vga_write(struct cdev *dev, vga_softc_t *sc, struct uio *uio, int flag)
136 return genfbread(&sc->gensc, sc->adp, uio, flag);
140 vga_ioctl(struct cdev *dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
143 return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, td);
147 vga_mmap(struct cdev *dev, vga_softc_t *sc, vm_ooffset_t offset,
148 vm_offset_t *paddr, int prot, vm_memattr_t *memattr)
150 return genfbmmap(&sc->gensc, sc->adp, offset, paddr, prot, memattr);
153 #endif /* FB_INSTALL_CDEV */
159 #include <dev/fb/vesa.h>
162 #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED)
163 #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED)
164 #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED)
166 /* for compatibility with old kernel options */
167 #ifdef SC_ALT_SEQACCESS
168 #undef SC_ALT_SEQACCESS
169 #undef VGA_ALT_SEQACCESS
170 #define VGA_ALT_SEQACCESS 1
175 #undef VGA_SLOW_IOACCESS
176 #define VGA_SLOW_IOACCESS
179 /* architecture dependent option */
180 #if !defined(__i386__) && !defined(__amd64__)
181 #define VGA_NO_BIOS 1
184 /* this should really be in `rtc.h' */
185 #define RTC_EQUIPMENT 0x14
188 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
189 #define V_MODE_PARAM_SIZE 64
191 /* video adapter state buffer */
194 #define V_STATE_SIG 0x736f6962
195 u_char regs[V_MODE_PARAM_SIZE];
197 typedef struct adp_state adp_state_t;
199 /* video adapter information */
203 #define DCC_EGAMONO 3
208 * NOTE: `va_window' should have a virtual address, but is initialized
209 * with a physical address in the following table, as verify_adapter()
210 * will perform address conversion at run-time.
212 static video_adapter_t adapter_init_value[] = {
214 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC,
215 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
218 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
219 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
222 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
223 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
226 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC,
227 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
230 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
231 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
234 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
235 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
239 static video_adapter_t biosadapter[2];
240 static int biosadapters = 0;
242 /* video driver declarations */
243 static int vga_configure(int flags);
244 int (*vga_sub_configure)(int flags);
246 static int vga_nop(void);
248 static int vga_error(void);
249 static vi_probe_t vga_probe;
250 static vi_init_t vga_init;
251 static vi_get_info_t vga_get_info;
252 static vi_query_mode_t vga_query_mode;
253 static vi_set_mode_t vga_set_mode;
254 static vi_save_font_t vga_save_font;
255 static vi_load_font_t vga_load_font;
256 static vi_show_font_t vga_show_font;
257 static vi_save_palette_t vga_save_palette;
258 static vi_load_palette_t vga_load_palette;
259 static vi_set_border_t vga_set_border;
260 static vi_save_state_t vga_save_state;
261 static vi_load_state_t vga_load_state;
262 static vi_set_win_org_t vga_set_origin;
263 static vi_read_hw_cursor_t vga_read_hw_cursor;
264 static vi_set_hw_cursor_t vga_set_hw_cursor;
265 static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape;
266 static vi_blank_display_t vga_blank_display;
267 static vi_mmap_t vga_mmap_buf;
268 static vi_ioctl_t vga_dev_ioctl;
269 #ifndef VGA_NO_MODE_CHANGE
270 static vi_clear_t vga_clear;
271 static vi_fill_rect_t vga_fill_rect;
272 static vi_bitblt_t vga_bitblt;
273 #else /* VGA_NO_MODE_CHANGE */
274 #define vga_clear (vi_clear_t *)vga_error
275 #define vga_fill_rect (vi_fill_rect_t *)vga_error
276 #define vga_bitblt (vi_bitblt_t *)vga_error
278 static vi_diag_t vga_diag;
280 static video_switch_t vgavidsw = {
297 vga_set_hw_cursor_shape,
309 VIDEO_DRIVER(mda, vgavidsw, NULL);
310 VIDEO_DRIVER(cga, vgavidsw, NULL);
311 VIDEO_DRIVER(ega, vgavidsw, NULL);
312 VIDEO_DRIVER(vga, vgavidsw, vga_configure);
314 /* VGA BIOS standard video modes */
318 static video_info_t bios_vmode[] = {
320 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1,
321 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
322 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1,
323 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
324 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1,
325 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
326 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1,
327 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
329 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
330 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
331 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
332 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
333 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
334 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
335 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
336 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
338 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
339 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
340 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1,
341 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
342 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
343 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
345 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1,
346 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
348 { M_ENH_B80x43, 0, 80, 43, 8, 8, 2, 1,
349 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
350 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1,
351 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
353 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1,
354 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
355 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
356 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
357 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1,
358 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
359 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1,
360 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
361 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1,
362 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
363 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1,
364 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
366 #ifndef VGA_NO_MODE_CHANGE
369 { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1,
370 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
371 { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1,
372 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
373 { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1,
374 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
375 { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1,
376 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
377 { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1,
378 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
379 { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1,
380 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
381 { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1,
382 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
383 { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1,
384 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
385 { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1,
386 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
387 { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1,
388 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
389 #endif /* VGA_WIDTH90 */
392 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
393 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
394 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
395 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
396 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1,
397 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
399 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4,
400 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
402 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4,
403 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
405 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
406 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
408 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
409 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
411 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
412 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
414 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
415 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
418 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
419 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
421 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
422 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
424 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1,
425 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
426 V_INFO_MM_PACKED, 1 },
427 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4,
428 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
430 #endif /* VGA_NO_MODE_CHANGE */
435 static int vga_init_done = FALSE;
436 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
437 static u_char *video_mode_ptr = NULL; /* EGA/VGA */
438 static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */
440 static u_char *mode_map[V_MODE_MAP_SIZE];
441 static adp_state_t adpstate;
442 static adp_state_t adpstate2;
443 static int rows_offset = 1;
445 /* local macros and functions */
446 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
448 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
449 static void map_mode_table(u_char *map[], u_char *table, int max);
451 static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max,
453 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
454 static int map_mode_num(int mode);
456 static int map_gen_mode_num(int type, int color, int mode);
457 static int map_bios_mode_num(int type, int color, int bios_mode);
458 static u_char *get_mode_param(int mode);
460 static void fill_adapter_param(int code, video_adapter_t *adp);
462 static int verify_adapter(video_adapter_t *adp);
463 static void update_adapter_info(video_adapter_t *adp, video_info_t *info);
464 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
465 #define COMP_IDENTICAL 0
466 #define COMP_SIMILAR 1
467 #define COMP_DIFFERENT 2
468 static int comp_adpregs(u_char *buf1, u_char *buf2);
470 static int probe_adapters(void);
471 static int set_line_length(video_adapter_t *adp, int pixel);
472 static int set_display_start(video_adapter_t *adp, int x, int y);
474 #ifndef VGA_NO_MODE_CHANGE
476 static void set_width90(adp_state_t *params);
478 #endif /* !VGA_NO_MODE_CHANGE */
480 #ifndef VGA_NO_FONT_LOADING
481 #define PARAM_BUFSIZE 6
482 static void set_font_mode(video_adapter_t *adp, u_char *buf);
483 static void set_normal_mode(video_adapter_t *adp, u_char *buf);
486 #ifndef VGA_NO_MODE_CHANGE
487 static void filll_io(int val, vm_offset_t d, size_t size);
488 static void planar_fill(video_adapter_t *adp, int val);
489 static void packed_fill(video_adapter_t *adp, int val);
490 static void direct_fill(video_adapter_t *adp, int val);
492 static void planar_fill_rect(video_adapter_t *adp, int val, int x, int y,
494 static void packed_fill_rect(video_adapter_t *adp, int val, int x, int y,
496 static void direct_fill_rect16(video_adapter_t *adp, int val, int x, int y,
498 static void direct_fill_rect24(video_adapter_t *adp, int val, int x, int y,
500 static void direct_fill_rect32(video_adapter_t *adp, int val, int x, int y,
503 #endif /* !VGA_NO_MODE_CHANGE */
505 static void dump_buffer(u_char *buf, size_t len);
507 #define ISMAPPED(pa, width) \
508 (((pa) <= (u_long)0x1000 - (width)) \
509 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
511 #define prologue(adp, flag, err) \
512 if (!vga_init_done || !((adp)->va_flags & (flag))) \
515 /* a backdoor for the console driver */
517 vga_configure(int flags)
522 for (i = 0; i < biosadapters; ++i) {
523 if (!probe_done(&biosadapter[i]))
525 biosadapter[i].va_flags |= V_ADP_INITIALIZED;
526 if (!config_done(&biosadapter[i])) {
527 if (vid_register(&biosadapter[i]) < 0)
529 biosadapter[i].va_flags |= V_ADP_REGISTERED;
532 if (vga_sub_configure != NULL)
533 (*vga_sub_configure)(flags);
538 /* local subroutines */
540 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
541 /* construct the mode parameter map */
543 map_mode_table(u_char *map[], u_char *table, int max)
547 for(i = 0; i < max; ++i)
548 map[i] = table + i*V_MODE_PARAM_SIZE;
549 for(; i < V_MODE_MAP_SIZE; ++i)
552 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
555 clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
561 * NOTE: we don't touch `bios_vmode[]' because it is shared
564 for(i = 0; i < max; ++i) {
565 if (vga_get_info(adp, i, &info))
567 if ((info.vi_flags & V_INFO_COLOR) != color)
572 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
573 /* map the non-standard video mode to a known mode number */
575 map_mode_num(int mode)
581 { M_ENH_B80x43, M_ENH_B80x25 },
582 { M_ENH_C80x43, M_ENH_C80x25 },
583 { M_VGA_M80x30, M_VGA_M80x25 },
584 { M_VGA_C80x30, M_VGA_C80x25 },
585 { M_VGA_M80x50, M_VGA_M80x25 },
586 { M_VGA_C80x50, M_VGA_C80x25 },
587 { M_VGA_M80x60, M_VGA_M80x25 },
588 { M_VGA_C80x60, M_VGA_C80x25 },
590 { M_VGA_M90x25, M_VGA_M80x25 },
591 { M_VGA_C90x25, M_VGA_C80x25 },
592 { M_VGA_M90x30, M_VGA_M80x25 },
593 { M_VGA_C90x30, M_VGA_C80x25 },
594 { M_VGA_M90x43, M_ENH_B80x25 },
595 { M_VGA_C90x43, M_ENH_C80x25 },
596 { M_VGA_M90x50, M_VGA_M80x25 },
597 { M_VGA_C90x50, M_VGA_C80x25 },
598 { M_VGA_M90x60, M_VGA_M80x25 },
599 { M_VGA_C90x60, M_VGA_C80x25 },
601 { M_VGA_MODEX, M_VGA_CG320 },
605 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
606 if (mode_map[i].from == mode)
607 return mode_map[i].to;
611 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
613 /* map a generic video mode to a known mode number */
615 map_gen_mode_num(int type, int color, int mode)
622 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, },
623 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, },
624 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, },
625 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, },
629 if (mode == M_TEXT_80x25) {
643 return M_EGAMONO80x25;
651 return M_EGAMONO80x25; /* XXX: this name is confusing */
658 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
659 if (mode_map[i].from == mode)
660 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono);
665 /* turn the BIOS video number into our video mode number */
667 map_bios_mode_num(int type, int color, int bios_mode)
669 static int cga_modes[7] = {
670 M_B40x25, M_C40x25, /* 0, 1 */
671 M_B80x25, M_C80x25, /* 2, 3 */
675 static int ega_modes[17] = {
676 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */
677 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */
680 M_EGAMONO80x25, /* 7 */
684 M_ENHMONOAPA2, /* XXX: video momery > 64K */
685 M_ENH_CG640, /* XXX: video momery > 64K */
687 static int vga_modes[20] = {
688 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
689 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
692 M_VGA_M80x25, /* 7 */
698 M_BG640x480, M_CG640x480,
705 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0]))
706 return vga_modes[bios_mode];
714 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0]))
715 return ega_modes[bios_mode];
719 return M_EGAMONO80x25;
723 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0]))
724 return cga_modes[bios_mode];
731 return M_EGAMONO80x25; /* XXX: this name is confusing */
739 /* look up a parameter table entry */
741 *get_mode_param(int mode)
743 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
744 if (mode >= V_MODE_MAP_SIZE)
745 mode = map_mode_num(mode);
747 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
748 return mode_map[mode];
755 fill_adapter_param(int code, video_adapter_t *adp)
761 { DCC_MONO, DCC_EGA40 /* CGA monitor */ },
762 { DCC_MONO, DCC_EGA80 /* CGA monitor */ },
763 { DCC_MONO, DCC_EGA80 },
764 { DCC_MONO, DCC_EGA80 },
765 { DCC_CGA40, DCC_EGAMONO },
766 { DCC_CGA80, DCC_EGAMONO },
767 { DCC_EGA40 /* CGA monitor */, DCC_MONO},
768 { DCC_EGA80 /* CGA monitor */, DCC_MONO},
769 { DCC_EGA80, DCC_MONO },
770 { DCC_EGA80, DCC_MONO },
771 { DCC_EGAMONO, DCC_CGA40 },
772 { DCC_EGAMONO, DCC_CGA80 },
775 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) {
776 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
777 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
779 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
780 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
783 #endif /* VGA_NO_BIOS */
786 verify_adapter(video_adapter_t *adp)
790 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
794 buf = BIOS_PADDRTOVADDR(adp->va_window);
797 if (readw(buf) != 0xA55A)
801 switch (adp->va_type) {
804 outb(adp->va_crtc_addr, 7);
805 if (inb(adp->va_crtc_addr) == 7) {
806 adp->va_type = KD_VGA;
807 adp->va_name = "vga";
808 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
810 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
811 /* the color adapter may be in the 40x25 mode... XXX */
813 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
814 /* get the BIOS video mode pointer */
815 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
816 p = BIOS_SADDRTOLADDR(p);
817 if (ISMAPPED(p, sizeof(u_int32_t))) {
818 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
819 p = BIOS_SADDRTOLADDR(p);
820 if (ISMAPPED(p, V_MODE_PARAM_SIZE))
821 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
827 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
828 /* may be in the 40x25 mode... XXX */
829 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
830 /* get the BIOS video mode pointer */
831 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
832 p = BIOS_SADDRTOLADDR(p);
833 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
838 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
839 /* get the BIOS video mode pointer */
840 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
841 p = BIOS_SADDRTOLADDR(p);
842 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
851 update_adapter_info(video_adapter_t *adp, video_info_t *info)
853 adp->va_flags &= ~V_ADP_COLOR;
855 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
857 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
858 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
859 adp->va_window_size = info->vi_window_size;
860 adp->va_window_gran = info->vi_window_gran;
861 adp->va_window_orig = 0;
863 adp->va_buffer = info->vi_buffer;
864 adp->va_buffer_size = info->vi_buffer_size;
865 if (info->vi_mem_model == V_INFO_MM_VGAX) {
866 adp->va_line_width = info->vi_width/2;
867 } else if (info->vi_flags & V_INFO_GRAPHICS) {
868 switch (info->vi_depth/info->vi_planes) {
870 adp->va_line_width = info->vi_width/8;
873 adp->va_line_width = info->vi_width/4;
876 adp->va_line_width = info->vi_width/2;
879 default: /* shouldn't happen */
880 adp->va_line_width = info->vi_width;
884 adp->va_line_width = info->vi_width;
886 adp->va_disp_start.x = 0;
887 adp->va_disp_start.y = 0;
888 bcopy(info, &adp->va_info, sizeof(adp->va_info));
891 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
892 /* compare two parameter table entries */
894 comp_adpregs(u_char *buf1, u_char *buf2)
898 } params[V_MODE_PARAM_SIZE] = {
899 {0xff}, {0x00}, {0xff}, /* COLS}, ROWS}, POINTS */
900 {0x00}, {0x00}, /* page length */
901 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */
902 {0xf3}, /* misc register */
903 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */
904 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
905 {0x00}, {0x00}, {0x00}, {0x00}, {0x00},
906 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
907 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
908 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */
909 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
910 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
911 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
912 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */
913 {0xff}, {0xff}, {0xff}, {0xff},
915 int identical = TRUE;
918 if ((buf1 == NULL) || (buf2 == NULL))
919 return COMP_DIFFERENT;
921 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
922 if (params[i].mask == 0) /* don't care */
924 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
925 return COMP_DIFFERENT;
926 if (buf1[i] != buf2[i])
929 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
931 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
933 /* probe video adapters and return the number of detected adapters */
937 video_adapter_t *adp;
939 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
944 /* do this test only once */
947 vga_init_done = TRUE;
950 * Locate display adapters.
951 * The AT architecture supports upto two adapters. `syscons' allows
952 * the following combinations of adapters:
954 * 2) MDA + EGA/VGA color
955 * 3) CGA + EGA/VGA mono
956 * Note that `syscons' doesn't bother with MCGA as it is only
957 * avaiable for low end PS/2 models which has 80286 or earlier CPUs,
958 * thus, they are not running FreeBSD!
959 * When there are two adapaters in the system, one becomes `primary'
960 * and the other `secondary'. The EGA adapter has a set of DIP
961 * switches on board for this information and the EGA BIOS copies
962 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88).
963 * The VGA BIOS has more sophisticated mechanism and has this
964 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains
965 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
969 * Check rtc and BIOS data area.
970 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
971 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are
972 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets
973 * these bits in BIOSDATA_EQUIPMENT according to the monitor
977 if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) {
978 /* EGA/VGA BIOS is present */
979 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
982 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */
984 /* EGA/VGA: shouldn't be happening */
985 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
990 /* FIXME: switch to the 80x25 mode? XXX */
991 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
992 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
996 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
997 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
1001 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
1002 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
1007 /* assume EGA/VGA? XXX */
1008 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
1009 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
1010 #endif /* VGA_NO_BIOS */
1013 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
1015 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
1016 biosadapter[V_ADP_SECONDARY].va_mode =
1017 biosadapter[V_ADP_SECONDARY].va_initial_mode =
1018 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type,
1019 biosadapter[V_ADP_SECONDARY].va_flags
1021 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
1023 biosadapter[V_ADP_SECONDARY].va_type = -1;
1025 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
1027 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
1029 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode =
1030 readb(BIOS_PADDRTOVADDR(0x449));
1032 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */
1034 biosadapter[V_ADP_PRIMARY].va_mode =
1035 biosadapter[V_ADP_PRIMARY].va_initial_mode =
1036 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type,
1037 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
1038 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
1040 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
1041 biosadapter[V_ADP_SECONDARY].va_type = -1;
1043 if (biosadapters == 0)
1044 return biosadapters;
1045 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
1046 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
1048 #if 0 /* we don't need these... */
1049 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
1050 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
1055 * We cannot have two video adapter of the same type; there must be
1056 * only one of color or mono adapter, or one each of them.
1058 if (biosadapters > 1) {
1059 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
1061 /* we have two mono or color adapters!! */
1062 return (biosadapters = 0);
1067 * Ensure a zero start address. The registers are w/o
1068 * for old hardware so it's too hard to relocate the active screen
1070 * This must be done before vga_save_state() for VGA.
1072 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
1073 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1074 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
1075 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1077 /* the video mode parameter table in EGA/VGA BIOS */
1078 /* NOTE: there can be only one EGA/VGA, wheather color or mono,
1079 * recognized by the video BIOS.
1081 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
1082 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
1083 adp = &biosadapter[V_ADP_PRIMARY];
1084 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
1085 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
1086 adp = &biosadapter[V_ADP_SECONDARY];
1090 bzero(mode_map, sizeof(mode_map));
1092 if (adp->va_type == KD_VGA) {
1093 vga_save_state(adp, &adpstate, sizeof(adpstate));
1094 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1095 mode_map[adp->va_initial_mode] = adpstate.regs;
1097 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1098 if (video_mode_ptr == NULL) {
1099 mode_map[adp->va_initial_mode] = adpstate.regs;
1102 /* discard the table if we are not familiar with it... */
1103 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
1104 mp = get_mode_param(adp->va_initial_mode);
1106 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
1107 switch (comp_adpregs(adpstate.regs, mp)) {
1108 case COMP_IDENTICAL:
1110 * OK, this parameter table looks reasonably familiar
1114 * This is a kludge for Toshiba DynaBook SS433
1115 * whose BIOS video mode table entry has the actual #
1116 * of rows at the offset 1; BIOSes from other
1117 * manufacturers store the # of rows - 1 there. XXX
1119 rows_offset = adpstate.regs[1] + 1 - mp[1];
1124 * Not exactly the same, but similar enough to be
1125 * trusted. However, use the saved register values
1126 * for the initial mode and other modes which are
1127 * based on the initial mode.
1129 mode_map[adp->va_initial_mode] = adpstate.regs;
1130 rows_offset = adpstate.regs[1] + 1 - mp[1];
1131 adpstate.regs[1] -= rows_offset - 1;
1134 case COMP_DIFFERENT:
1137 * Don't use the paramter table in BIOS. It doesn't
1138 * look familiar to us. Video mode switching is allowed
1139 * only if the new mode is the same as or based on
1142 video_mode_ptr = NULL;
1143 bzero(mode_map, sizeof(mode_map));
1144 mode_map[adp->va_initial_mode] = adpstate.regs;
1149 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1151 #ifndef VGA_NO_MODE_CHANGE
1152 adp->va_flags |= V_ADP_MODECHANGE;
1154 #ifndef VGA_NO_FONT_LOADING
1155 adp->va_flags |= V_ADP_FONT;
1157 } else if (adp->va_type == KD_EGA) {
1158 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1160 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1161 if (video_mode_ptr == NULL) {
1164 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
1165 /* XXX how can one validate the EGA table... */
1166 mp = get_mode_param(adp->va_initial_mode);
1168 adp->va_flags |= V_ADP_MODECHANGE;
1169 #ifndef VGA_NO_FONT_LOADING
1170 adp->va_flags |= V_ADP_FONT;
1175 * This is serious. We will not be able to switch video
1178 video_mode_ptr = NULL;
1179 bzero(mode_map, sizeof(mode_map));
1183 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1187 /* remove conflicting modes if we have more than one adapter */
1188 if (biosadapters > 0) {
1189 for (i = 0; i < biosadapters; ++i) {
1190 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
1192 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
1193 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1195 if ((biosadapter[i].va_type == KD_VGA)
1196 || (biosadapter[i].va_type == KD_EGA)) {
1197 biosadapter[i].va_io_base =
1198 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1200 biosadapter[i].va_io_size = 32;
1205 /* buffer address */
1206 vga_get_info(&biosadapter[V_ADP_PRIMARY],
1207 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
1208 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1209 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
1211 if (biosadapters > 1) {
1212 vga_get_info(&biosadapter[V_ADP_SECONDARY],
1213 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
1214 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1215 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
1219 * XXX: we should verify the following values for the primary adapter...
1220 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
1221 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
1222 * ? 0 : V_ADP_COLOR;
1223 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
1224 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
1225 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
1226 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
1229 return biosadapters;
1232 /* set the scan line length in pixel */
1234 set_line_length(video_adapter_t *adp, int pixel)
1237 int ppw; /* pixels per word */
1238 int bpl; /* bytes per line */
1241 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1243 mp = get_mode_param(adp->va_mode);
1247 switch (adp->va_info.vi_mem_model) {
1248 case V_INFO_MM_PLANAR:
1249 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1250 count = (pixel + ppw - 1)/ppw/2;
1251 bpl = ((pixel + ppw - 1)/ppw/2)*4;
1253 case V_INFO_MM_PACKED:
1254 count = (pixel + 7)/8;
1255 bpl = ((pixel + 7)/8)*8;
1257 case V_INFO_MM_TEXT:
1258 count = (pixel + 7)/8; /* columns */
1259 bpl = (pixel + 7)/8; /* columns */
1265 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
1266 count *= 2; /* byte mode */
1267 outb(adp->va_crtc_addr, 0x13);
1268 outb(adp->va_crtc_addr + 1, count);
1269 adp->va_line_width = bpl;
1275 set_display_start(video_adapter_t *adp, int x, int y)
1277 int off; /* byte offset (graphics mode)/word offset (text mode) */
1278 int poff; /* pixel offset */
1279 int roff; /* row offset */
1280 int ppb; /* pixels per byte */
1282 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1284 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
1285 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1286 off = y*adp->va_line_width + x/ppb;
1290 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1299 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
1300 roff = y%adp->va_info.vi_cheight;
1301 /* FIXME: is this correct? XXX */
1309 outb(adp->va_crtc_addr, 0xc); /* high */
1310 outb(adp->va_crtc_addr + 1, off >> 8);
1311 outb(adp->va_crtc_addr, 0xd); /* low */
1312 outb(adp->va_crtc_addr + 1, off & 0xff);
1314 /* horizontal pel pan */
1315 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1316 inb(adp->va_crtc_addr + 6);
1317 outb(ATC, 0x13 | 0x20);
1319 inb(adp->va_crtc_addr + 6);
1323 /* preset raw scan */
1324 outb(adp->va_crtc_addr, 8);
1325 outb(adp->va_crtc_addr + 1, roff);
1327 adp->va_disp_start.x = x;
1328 adp->va_disp_start.y = y;
1332 #ifndef VGA_NO_MODE_CHANGE
1333 #if defined(__i386__) || defined(__amd64__) /* XXX */
1335 fill(int val, void *d, size_t size)
1342 #endif /* __i386__ */
1345 filll_io(int val, vm_offset_t d, size_t size)
1347 while (size-- > 0) {
1349 d += sizeof(u_int32_t);
1352 #endif /* !VGA_NO_MODE_CHANGE */
1371 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
1374 if (unit >= biosadapters)
1377 *adpp = &biosadapter[unit];
1383 vga_init(int unit, video_adapter_t *adp, int flags)
1385 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
1388 if (!init_done(adp)) {
1389 /* nothing to do really... */
1390 adp->va_flags |= V_ADP_INITIALIZED;
1393 if (!config_done(adp)) {
1394 if (vid_register(adp) < 0)
1396 adp->va_flags |= V_ADP_REGISTERED;
1398 if (vga_sub_configure != NULL)
1399 (*vga_sub_configure)(0);
1406 * Return the video_info structure of the requested video mode.
1411 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
1418 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
1419 #ifndef VGA_NO_MODE_CHANGE
1420 if (adp->va_flags & V_ADP_MODECHANGE) {
1422 * If the parameter table entry for this mode is not found,
1423 * the mode is not supported...
1425 if (get_mode_param(mode) == NULL)
1428 #endif /* VGA_NO_MODE_CHANGE */
1431 * Even if we don't support video mode switching on this adapter,
1432 * the information on the initial (thus current) video mode
1433 * should be made available.
1435 if (mode != adp->va_initial_mode)
1439 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1440 if (bios_vmode[i].vi_mode == NA)
1442 if (mode == bios_vmode[i].vi_mode) {
1443 *info = bios_vmode[i];
1445 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
1454 * Find a video mode matching the requested parameters.
1455 * Fields filled with 0 are considered "don't care" fields and
1461 vga_query_mode(video_adapter_t *adp, video_info_t *info)
1468 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1469 if (bios_vmode[i].vi_mode == NA)
1472 if ((info->vi_width != 0)
1473 && (info->vi_width != bios_vmode[i].vi_width))
1475 if ((info->vi_height != 0)
1476 && (info->vi_height != bios_vmode[i].vi_height))
1478 if ((info->vi_cwidth != 0)
1479 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
1481 if ((info->vi_cheight != 0)
1482 && (info->vi_cheight != bios_vmode[i].vi_cheight))
1484 if ((info->vi_depth != 0)
1485 && (info->vi_depth != bios_vmode[i].vi_depth))
1487 if ((info->vi_planes != 0)
1488 && (info->vi_planes != bios_vmode[i].vi_planes))
1490 /* XXX: should check pixel format, memory model */
1491 if ((info->vi_flags != 0)
1492 && (info->vi_flags != bios_vmode[i].vi_flags))
1495 /* verify if this mode is supported on this adapter */
1496 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
1505 * Change the video mode.
1510 #ifndef VGA_NO_MODE_CHANGE
1513 set_width90(adp_state_t *params)
1516 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
1517 * and alexv@sui.gda.itesm.mx.
1519 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */
1520 params->regs[10+0x0] = 0x6b;
1521 params->regs[10+0x1] = 0x59;
1522 params->regs[10+0x2] = 0x5a;
1523 params->regs[10+0x3] = 0x8e;
1524 params->regs[10+0x4] = 0x5e;
1525 params->regs[10+0x5] = 0x8a;
1526 params->regs[10+0x13] = 45;
1527 params->regs[35+0x13] = 0;
1529 #endif /* VGA_WIDTH90 */
1530 #endif /* !VGA_NO_MODE_CHANGE */
1533 vga_set_mode(video_adapter_t *adp, int mode)
1535 #ifndef VGA_NO_MODE_CHANGE
1539 prologue(adp, V_ADP_MODECHANGE, ENODEV);
1541 mode = map_gen_mode_num(adp->va_type,
1542 adp->va_flags & V_ADP_COLOR, mode);
1543 if (vga_get_info(adp, mode, &info))
1547 printf("vga_set_mode(): setting mode %d\n", mode);
1550 params.sig = V_STATE_SIG;
1551 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1555 case M_VGA_C90x60: case M_VGA_M90x60:
1556 set_width90(¶ms);
1559 case M_VGA_C80x60: case M_VGA_M80x60:
1560 params.regs[2] = 0x08;
1561 params.regs[19] = 0x47;
1565 case M_VGA_C90x30: case M_VGA_M90x30:
1566 set_width90(¶ms);
1569 case M_VGA_C80x30: case M_VGA_M80x30:
1570 params.regs[19] = 0x4f;
1572 params.regs[9] |= 0xc0;
1573 params.regs[16] = 0x08;
1574 params.regs[17] = 0x3e;
1575 params.regs[26] = 0xea;
1576 params.regs[28] = 0xdf;
1577 params.regs[31] = 0xe7;
1578 params.regs[32] = 0x04;
1582 case M_VGA_C90x43: case M_VGA_M90x43:
1583 set_width90(¶ms);
1586 case M_ENH_C80x43: case M_ENH_B80x43:
1587 params.regs[28] = 87;
1591 case M_VGA_C90x50: case M_VGA_M90x50:
1592 set_width90(¶ms);
1595 case M_VGA_C80x50: case M_VGA_M80x50:
1598 params.regs[19] = 7;
1602 case M_VGA_C90x25: case M_VGA_M90x25:
1603 set_width90(¶ms);
1606 case M_VGA_C40x25: case M_VGA_C80x25:
1608 case M_B40x25: case M_C40x25:
1609 case M_B80x25: case M_C80x25:
1610 case M_ENH_B40x25: case M_ENH_C40x25:
1611 case M_ENH_B80x25: case M_ENH_C80x25:
1612 case M_EGAMONO80x25:
1615 vga_load_state(adp, ¶ms);
1619 /* "unchain" the VGA mode */
1620 params.regs[5-1+0x04] &= 0xf7;
1621 params.regs[5-1+0x04] |= 0x04;
1622 /* turn off doubleword mode */
1623 params.regs[10+0x14] &= 0xbf;
1624 /* turn off word addressing */
1625 params.regs[10+0x17] |= 0x40;
1626 /* set logical screen width */
1627 params.regs[10+0x13] = 80;
1629 params.regs[10+0x11] = 0x2c;
1630 params.regs[10+0x06] = 0x0d;
1631 params.regs[10+0x07] = 0x3e;
1632 params.regs[10+0x10] = 0xea;
1633 params.regs[10+0x11] = 0xac;
1634 params.regs[10+0x12] = 0xdf;
1635 params.regs[10+0x15] = 0xe7;
1636 params.regs[10+0x16] = 0x06;
1637 /* set vertical sync polarity to reflect aspect ratio */
1638 params.regs[9] = 0xe3;
1641 case M_BG320: case M_CG320: case M_BG640:
1642 case M_CG320_D: case M_CG640_E:
1643 case M_CG640x350: case M_ENH_CG640:
1644 case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
1647 vga_load_state(adp, ¶ms);
1654 adp->va_mode = mode;
1655 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1656 update_adapter_info(adp, &info);
1658 /* move hardware cursor out of the way */
1659 vidd_set_hw_cursor(adp, -1, -1);
1662 #else /* VGA_NO_MODE_CHANGE */
1664 #endif /* VGA_NO_MODE_CHANGE */
1667 #ifndef VGA_NO_FONT_LOADING
1670 set_font_mode(video_adapter_t *adp, u_char *buf)
1677 /* save register values */
1678 if (adp->va_type == KD_VGA) {
1679 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1680 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1681 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1682 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1683 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1684 inb(adp->va_crtc_addr + 6);
1685 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1686 } else /* if (adp->va_type == KD_EGA) */ {
1688 * EGA cannot be read; copy parameters from the mode parameter
1691 mp = get_mode_param(adp->va_mode);
1692 buf[0] = mp[5 + 0x02 - 1];
1693 buf[1] = mp[5 + 0x04 - 1];
1694 buf[2] = mp[55 + 0x04];
1695 buf[3] = mp[55 + 0x05];
1696 buf[4] = mp[55 + 0x06];
1697 buf[5] = mp[35 + 0x10];
1700 /* setup vga for loading fonts */
1701 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1702 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1703 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1704 outb(ATC, 0x20); /* enable palette */
1706 #ifdef VGA_SLOW_IOACCESS
1707 #ifdef VGA_ALT_SEQACCESS
1708 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1710 outb(TSIDX, 0x02); outb(TSREG, 0x04);
1711 outb(TSIDX, 0x04); outb(TSREG, 0x07);
1712 #ifdef VGA_ALT_SEQACCESS
1713 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1715 outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
1716 outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
1717 outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
1718 #else /* VGA_SLOW_IOACCESS */
1719 #ifdef VGA_ALT_SEQACCESS
1720 outw(TSIDX, 0x0100);
1722 outw(TSIDX, 0x0402);
1723 outw(TSIDX, 0x0704);
1724 #ifdef VGA_ALT_SEQACCESS
1725 outw(TSIDX, 0x0300);
1727 outw(GDCIDX, 0x0204);
1728 outw(GDCIDX, 0x0005);
1729 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1730 #endif /* VGA_SLOW_IOACCESS */
1736 set_normal_mode(video_adapter_t *adp, u_char *buf)
1742 /* setup vga for normal operation mode again */
1743 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1744 outb(ATC, 0x10); outb(ATC, buf[5]);
1745 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1746 outb(ATC, 0x20); /* enable palette */
1748 #ifdef VGA_SLOW_IOACCESS
1749 #ifdef VGA_ALT_SEQACCESS
1750 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1752 outb(TSIDX, 0x02); outb(TSREG, buf[0]);
1753 outb(TSIDX, 0x04); outb(TSREG, buf[1]);
1754 #ifdef VGA_ALT_SEQACCESS
1755 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1757 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
1758 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
1759 if (adp->va_crtc_addr == MONO_CRTC) {
1760 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
1762 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
1764 #else /* VGA_SLOW_IOACCESS */
1765 #ifdef VGA_ALT_SEQACCESS
1766 outw(TSIDX, 0x0100);
1768 outw(TSIDX, 0x0002 | (buf[0] << 8));
1769 outw(TSIDX, 0x0004 | (buf[1] << 8));
1770 #ifdef VGA_ALT_SEQACCESS
1771 outw(TSIDX, 0x0300);
1773 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1774 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1775 if (adp->va_crtc_addr == MONO_CRTC)
1776 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
1778 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1779 #endif /* VGA_SLOW_IOACCESS */
1784 #endif /* VGA_NO_FONT_LOADING */
1788 * Read the font data in the requested font page from the video adapter.
1793 vga_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
1794 u_char *data, int ch, int count)
1796 #ifndef VGA_NO_FONT_LOADING
1797 u_char buf[PARAM_BUFSIZE];
1798 vm_offset_t segment;
1800 #ifdef VGA_ALT_SEQACCESS
1805 prologue(adp, V_ADP_FONT, ENODEV);
1807 if (fontsize < 14) {
1810 } else if (fontsize >= 32) {
1812 } else if (fontsize >= 16) {
1820 if (page < 0 || page >= 8 || fontwidth != 8)
1822 segment = FONT_BUF + 0x4000*page;
1826 #ifdef VGA_ALT_SEQACCESS
1827 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1829 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1830 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1831 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1832 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1837 set_font_mode(adp, buf);
1838 if (fontsize == 32) {
1839 bcopy_fromio((uintptr_t)segment + ch*32, data, fontsize*count);
1841 for (c = ch; count > 0; ++c, --count) {
1842 bcopy_fromio((uintptr_t)segment + c*32, data, fontsize);
1846 set_normal_mode(adp, buf);
1848 #ifdef VGA_ALT_SEQACCESS
1849 if (adp->va_type == KD_VGA) {
1851 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1852 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1853 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1859 #else /* VGA_NO_FONT_LOADING */
1861 #endif /* VGA_NO_FONT_LOADING */
1866 * Set the font data in the requested font page.
1867 * NOTE: it appears that some recent video adapters do not support
1868 * the font page other than 0... XXX
1873 vga_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
1874 u_char *data, int ch, int count)
1876 #ifndef VGA_NO_FONT_LOADING
1877 u_char buf[PARAM_BUFSIZE];
1878 vm_offset_t segment;
1880 #ifdef VGA_ALT_SEQACCESS
1885 prologue(adp, V_ADP_FONT, ENODEV);
1887 if (fontsize < 14) {
1890 } else if (fontsize >= 32) {
1892 } else if (fontsize >= 16) {
1900 if (page < 0 || page >= 8 || fontwidth != 8)
1902 segment = FONT_BUF + 0x4000*page;
1906 #ifdef VGA_ALT_SEQACCESS
1907 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1909 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1910 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1911 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1912 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1917 set_font_mode(adp, buf);
1918 if (fontsize == 32) {
1919 bcopy_toio(data, (uintptr_t)segment + ch*32, fontsize*count);
1921 for (c = ch; count > 0; ++c, --count) {
1922 bcopy_toio(data, (uintptr_t)segment + c*32, fontsize);
1926 set_normal_mode(adp, buf);
1928 #ifdef VGA_ALT_SEQACCESS
1929 if (adp->va_type == KD_VGA) {
1931 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1932 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1933 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1939 #else /* VGA_NO_FONT_LOADING */
1941 #endif /* VGA_NO_FONT_LOADING */
1946 * Activate the requested font page.
1947 * NOTE: it appears that some recent video adapters do not support
1948 * the font page other than 0... XXX
1953 vga_show_font(video_adapter_t *adp, int page)
1955 #ifndef VGA_NO_FONT_LOADING
1956 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1959 prologue(adp, V_ADP_FONT, ENODEV);
1960 if (page < 0 || page >= 8)
1964 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1968 #else /* VGA_NO_FONT_LOADING */
1970 #endif /* VGA_NO_FONT_LOADING */
1975 * Read DAC values. The values have expressed in 8 bits.
1980 vga_save_palette(video_adapter_t *adp, u_char *palette)
1985 prologue(adp, V_ADP_PALETTE, ENODEV);
1988 * We store 8 bit values in the palette buffer, while the standard
1989 * VGA has 6 bit DAC .
1991 outb(PALRADR, 0x00);
1992 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 0 : 2;
1993 for (i = 0; i < 256*3; ++i)
1994 palette[i] = inb(PALDATA) << bits;
1995 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2000 vga_save_palette2(video_adapter_t *adp, int base, int count,
2001 u_char *r, u_char *g, u_char *b)
2006 prologue(adp, V_ADP_PALETTE, ENODEV);
2008 outb(PALRADR, base);
2009 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 0 : 2;
2010 for (i = 0; i < count; ++i) {
2011 r[i] = inb(PALDATA) << bits;
2012 g[i] = inb(PALDATA) << bits;
2013 b[i] = inb(PALDATA) << bits;
2015 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2026 vga_load_palette(video_adapter_t *adp, u_char *palette)
2031 prologue(adp, V_ADP_PALETTE, ENODEV);
2033 outb(PIXMASK, 0xff); /* no pixelmask */
2034 outb(PALWADR, 0x00);
2035 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 0 : 2;
2036 for (i = 0; i < 256*3; ++i)
2037 outb(PALDATA, palette[i] >> bits);
2038 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2039 outb(ATC, 0x20); /* enable palette */
2044 vga_load_palette2(video_adapter_t *adp, int base, int count,
2045 u_char *r, u_char *g, u_char *b)
2050 prologue(adp, V_ADP_PALETTE, ENODEV);
2052 outb(PIXMASK, 0xff); /* no pixelmask */
2053 outb(PALWADR, base);
2054 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 0 : 2;
2055 for (i = 0; i < count; ++i) {
2056 outb(PALDATA, r[i] >> bits);
2057 outb(PALDATA, g[i] >> bits);
2058 outb(PALDATA, b[i] >> bits);
2060 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2061 outb(ATC, 0x20); /* enable palette */
2067 * Change the border color.
2072 vga_set_border(video_adapter_t *adp, int color)
2074 prologue(adp, V_ADP_BORDER, ENODEV);
2076 switch (adp->va_type) {
2079 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
2080 outb(ATC, 0x31); outb(ATC, color & 0xff);
2083 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
2095 * Read video register values.
2096 * NOTE: this function only reads the standard EGA/VGA registers.
2097 * any extra/extended registers of SVGA adapters are not saved.
2102 vga_save_state(video_adapter_t *adp, void *p, size_t size)
2111 /* return the required buffer size */
2112 prologue(adp, V_ADP_STATESAVE, 0);
2113 return sizeof(adp_state_t);
2115 prologue(adp, V_ADP_STATESAVE, ENODEV);
2116 if (size < sizeof(adp_state_t))
2120 ((adp_state_t *)p)->sig = V_STATE_SIG;
2121 buf = ((adp_state_t *)p)->regs;
2122 bzero(buf, V_MODE_PARAM_SIZE);
2123 crtc_addr = adp->va_crtc_addr;
2127 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2128 for (i = 0, j = 5; i < 4; i++) {
2130 buf[j++] = inb(TSREG);
2132 buf[9] = inb(MISC + 10); /* dot-clock */
2133 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2135 for (i = 0, j = 10; i < 25; i++) { /* crtc */
2137 buf[j++] = inb(crtc_addr + 1);
2139 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
2140 inb(crtc_addr + 6); /* reset flip-flop */
2142 buf[j++] = inb(ATC + 1);
2144 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
2146 buf[j++] = inb(GDCREG);
2148 inb(crtc_addr + 6); /* reset flip-flop */
2149 outb(ATC, 0x20); /* enable palette */
2154 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
2155 if (info.vi_flags & V_INFO_GRAPHICS) {
2156 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
2157 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
2159 buf[0] = info.vi_width; /* COLS */
2160 buf[1] = info.vi_height - 1; /* ROWS */
2162 buf[2] = info.vi_cheight; /* POINTS */
2164 /* XXX: shouldn't be happening... */
2165 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
2166 adp->va_unit, adp->va_name);
2169 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
2170 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
2171 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
2172 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
2173 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
2181 * Set video registers at once.
2182 * NOTE: this function only updates the standard EGA/VGA registers.
2183 * any extra/extended registers of SVGA adapters are not changed.
2188 vga_load_state(video_adapter_t *adp, void *p)
2195 prologue(adp, V_ADP_STATELOAD, ENODEV);
2196 if (((adp_state_t *)p)->sig != V_STATE_SIG)
2199 buf = ((adp_state_t *)p)->regs;
2200 crtc_addr = adp->va_crtc_addr;
2203 dump_buffer(buf, V_MODE_PARAM_SIZE);
2208 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2209 for (i = 0; i < 4; ++i) { /* program sequencer */
2211 outb(TSREG, buf[i + 5]);
2213 outb(MISC, buf[9]); /* set dot-clock */
2214 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2215 outb(crtc_addr, 0x11);
2216 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
2217 for (i = 0; i < 25; ++i) { /* program crtc */
2219 outb(crtc_addr + 1, buf[i + 10]);
2221 inb(crtc_addr+6); /* reset flip-flop */
2222 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
2224 outb(ATC, buf[i + 35]);
2226 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
2228 outb(GDCREG, buf[i + 55]);
2230 inb(crtc_addr + 6); /* reset flip-flop */
2231 outb(ATC, 0x20); /* enable palette */
2233 #ifdef notyet /* a temporary workaround for kernel panic, XXX */
2235 if (adp->va_unit == V_ADP_PRIMARY) {
2236 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
2237 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
2238 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
2240 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
2241 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
2244 #endif /* VGA_NO_BIOS */
2253 * Change the origin (window mapping) of the banked frame buffer.
2256 vga_set_origin(video_adapter_t *adp, off_t offset)
2259 * The standard video modes do not require window mapping;
2260 * always return error.
2267 * Read the position of the hardware text cursor.
2272 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
2280 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2284 outb(adp->va_crtc_addr, 14);
2285 off = inb(adp->va_crtc_addr + 1);
2286 outb(adp->va_crtc_addr, 15);
2287 off = (off << 8) | inb(adp->va_crtc_addr + 1);
2290 *row = off / adp->va_info.vi_width;
2291 *col = off % adp->va_info.vi_width;
2298 * Move the hardware text cursor. If col and row are both -1,
2299 * the cursor won't be shown.
2304 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
2312 if ((col == -1) && (row == -1)) {
2315 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2317 off = row*adp->va_info.vi_width + col;
2321 outb(adp->va_crtc_addr, 14);
2322 outb(adp->va_crtc_addr + 1, off >> 8);
2323 outb(adp->va_crtc_addr, 15);
2324 outb(adp->va_crtc_addr + 1, off & 0x00ff);
2331 * set_hw_cursor_shape():
2332 * Change the shape of the hardware text cursor. If the height is
2333 * zero or negative, the cursor won't be shown.
2338 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
2339 int celsize, int blink)
2347 switch (adp->va_type) {
2354 /* make the cursor invisible */
2355 outb(adp->va_crtc_addr, 10);
2356 outb(adp->va_crtc_addr + 1, 32);
2357 outb(adp->va_crtc_addr, 11);
2358 outb(adp->va_crtc_addr + 1, 0);
2360 outb(adp->va_crtc_addr, 10);
2361 outb(adp->va_crtc_addr + 1, celsize - base - height);
2362 outb(adp->va_crtc_addr, 11);
2363 outb(adp->va_crtc_addr + 1, celsize - base - 1);
2368 /* make the cursor invisible */
2369 outb(adp->va_crtc_addr, 10);
2370 outb(adp->va_crtc_addr + 1, celsize);
2371 outb(adp->va_crtc_addr, 11);
2372 outb(adp->va_crtc_addr + 1, 0);
2374 outb(adp->va_crtc_addr, 10);
2375 outb(adp->va_crtc_addr + 1, celsize - base - height);
2376 outb(adp->va_crtc_addr, 11);
2377 outb(adp->va_crtc_addr + 1, celsize - base);
2388 * Put the display in power save/power off mode.
2393 vga_blank_display(video_adapter_t *adp, int mode)
2399 switch (adp->va_type) {
2402 case V_DISPLAY_SUSPEND:
2403 case V_DISPLAY_STAND_BY:
2407 outb(TSREG, val | 0x20);
2408 outb(adp->va_crtc_addr, 0x17);
2409 val = inb(adp->va_crtc_addr + 1);
2410 outb(adp->va_crtc_addr + 1, val & ~0x80);
2412 case V_DISPLAY_BLANK:
2416 outb(TSREG, val | 0x20);
2422 outb(TSREG, val & 0xDF);
2423 outb(adp->va_crtc_addr, 0x17);
2424 val = inb(adp->va_crtc_addr + 1);
2425 outb(adp->va_crtc_addr + 1, val | 0x80);
2431 /* no support yet */
2437 case V_DISPLAY_SUSPEND:
2438 case V_DISPLAY_STAND_BY:
2439 case V_DISPLAY_BLANK:
2440 outb(adp->va_crtc_addr + 4, 0x25);
2443 outb(adp->va_crtc_addr + 4, 0x2d);
2451 case V_DISPLAY_SUSPEND:
2452 case V_DISPLAY_STAND_BY:
2453 case V_DISPLAY_BLANK:
2454 outb(adp->va_crtc_addr + 4, 0x21);
2457 outb(adp->va_crtc_addr + 4, 0x29);
2471 * Mmap frame buffer.
2476 vga_mmap_buf(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
2477 int prot, vm_memattr_t *memattr)
2479 if (adp->va_info.vi_flags & V_INFO_LINEAR)
2483 printf("vga_mmap_buf(): window:0x%jx, offset:0x%jx\n",
2484 (uintmax_t)adp->va_info.vi_window, (uintmax_t)offset);
2487 /* XXX: is this correct? */
2488 if (offset > adp->va_window_size - PAGE_SIZE)
2491 *paddr = adp->va_info.vi_window + offset;
2495 #ifndef VGA_NO_MODE_CHANGE
2498 planar_fill(video_adapter_t *adp, int val)
2501 int at; /* position in the frame buffer */
2504 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2505 outw(GDCIDX, 0x0003); /* data rotate/function select */
2506 outw(GDCIDX, 0x0f01); /* set/reset enable */
2507 outw(GDCIDX, 0xff08); /* bit mask */
2508 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2510 length = adp->va_line_width*adp->va_info.vi_height;
2511 while (length > 0) {
2512 l = imin(length, adp->va_window_size);
2513 vidd_set_win_org(adp, at);
2514 bzero_io(adp->va_window, l);
2518 outw(GDCIDX, 0x0000); /* set/reset */
2519 outw(GDCIDX, 0x0001); /* set/reset enable */
2523 packed_fill(video_adapter_t *adp, int val)
2526 int at; /* position in the frame buffer */
2530 length = adp->va_line_width*adp->va_info.vi_height;
2531 while (length > 0) {
2532 l = imin(length, adp->va_window_size);
2533 vidd_set_win_org(adp, at);
2534 fill_io(val, adp->va_window, l);
2541 direct_fill(video_adapter_t *adp, int val)
2544 int at; /* position in the frame buffer */
2548 length = adp->va_line_width*adp->va_info.vi_height;
2549 while (length > 0) {
2550 l = imin(length, adp->va_window_size);
2551 vidd_set_win_org(adp, at);
2552 switch (adp->va_info.vi_pixel_size) {
2553 case sizeof(u_int16_t):
2554 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
2559 case sizeof(u_int32_t):
2560 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
2569 vga_clear(video_adapter_t *adp)
2571 switch (adp->va_info.vi_mem_model) {
2572 case V_INFO_MM_TEXT:
2573 /* do nothing? XXX */
2575 case V_INFO_MM_PLANAR:
2576 planar_fill(adp, 0);
2578 case V_INFO_MM_PACKED:
2579 packed_fill(adp, 0);
2581 case V_INFO_MM_DIRECT:
2582 direct_fill(adp, 0);
2590 planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2595 int offset; /* offset within window */
2599 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2600 outw(GDCIDX, 0x0003); /* data rotate/function select */
2601 outw(GDCIDX, 0x0f01); /* set/reset enable */
2602 outw(GDCIDX, 0xff08); /* bit mask */
2603 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2605 banksize = adp->va_window_size;
2608 pos = adp->va_line_width*y + x/8;
2609 if (bank != pos/banksize) {
2610 vidd_set_win_org(adp, pos);
2611 bank = pos/banksize;
2613 offset = pos%banksize;
2614 bx = (x + cx)/8 - x/8;
2616 outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
2617 writeb(adp->va_window + offset, 0);
2620 if (offset >= banksize) {
2622 ++bank; /* next bank */
2623 vidd_set_win_org(adp, bank*banksize);
2625 outw(GDCIDX, 0xff08); /* bit mask */
2628 l = imin(bx, banksize);
2629 bzero_io(adp->va_window + offset, l);
2632 if (offset >= banksize) {
2634 ++bank; /* next bank */
2635 vidd_set_win_org(adp, bank*banksize);
2639 outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
2640 writeb(adp->va_window + offset, 0);
2642 if (offset >= banksize) {
2644 ++bank; /* next bank */
2645 vidd_set_win_org(adp, bank*banksize);
2647 outw(GDCIDX, 0xff08); /* bit mask */
2653 outw(GDCIDX, 0xff08); /* bit mask */
2654 outw(GDCIDX, 0x0000); /* set/reset */
2655 outw(GDCIDX, 0x0001); /* set/reset enable */
2659 packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2664 int offset; /* offset within window */
2667 banksize = adp->va_window_size;
2669 cx *= adp->va_info.vi_pixel_size;
2671 pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
2672 if (bank != pos/banksize) {
2673 vidd_set_win_org(adp, pos);
2674 bank = pos/banksize;
2676 offset = pos%banksize;
2677 end = imin(offset + cx, banksize);
2678 fill_io(val, adp->va_window + offset,
2679 (end - offset)/adp->va_info.vi_pixel_size);
2680 /* the line may cross the window boundary */
2681 if (offset + cx > banksize) {
2682 ++bank; /* next bank */
2683 vidd_set_win_org(adp, bank*banksize);
2684 end = offset + cx - banksize;
2685 fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
2693 direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2698 int offset; /* offset within window */
2702 * XXX: the function assumes that banksize is a muliple of
2703 * sizeof(u_int16_t).
2705 banksize = adp->va_window_size;
2707 cx *= sizeof(u_int16_t);
2709 pos = adp->va_line_width*y + x*sizeof(u_int16_t);
2710 if (bank != pos/banksize) {
2711 vidd_set_win_org(adp, pos);
2712 bank = pos/banksize;
2714 offset = pos%banksize;
2715 end = imin(offset + cx, banksize);
2716 fillw_io(val, adp->va_window + offset,
2717 (end - offset)/sizeof(u_int16_t));
2718 /* the line may cross the window boundary */
2719 if (offset + cx > banksize) {
2720 ++bank; /* next bank */
2721 vidd_set_win_org(adp, bank*banksize);
2722 end = offset + cx - banksize;
2723 fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
2731 direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2736 int offset; /* offset within window */
2742 b[0] = val & 0x0000ff;
2743 b[1] = (val >> 8) & 0x0000ff;
2744 b[2] = (val >> 16) & 0x0000ff;
2745 banksize = adp->va_window_size;
2749 pos = adp->va_line_width*y + x*3;
2750 if (bank != pos/banksize) {
2751 vidd_set_win_org(adp, pos);
2752 bank = pos/banksize;
2754 offset = pos%banksize;
2755 end = imin(offset + cx, banksize);
2756 for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
2757 writeb(adp->va_window + j, b[i]);
2759 /* the line may cross the window boundary */
2760 if (offset + cx >= banksize) {
2761 ++bank; /* next bank */
2762 vidd_set_win_org(adp, bank*banksize);
2764 end = offset + cx - banksize;
2765 for (; j < end; i = (++i)%3, ++j) {
2766 writeb(adp->va_window + j, b[i]);
2775 direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2780 int offset; /* offset within window */
2784 * XXX: the function assumes that banksize is a muliple of
2785 * sizeof(u_int32_t).
2787 banksize = adp->va_window_size;
2789 cx *= sizeof(u_int32_t);
2791 pos = adp->va_line_width*y + x*sizeof(u_int32_t);
2792 if (bank != pos/banksize) {
2793 vidd_set_win_org(adp, pos);
2794 bank = pos/banksize;
2796 offset = pos%banksize;
2797 end = imin(offset + cx, banksize);
2798 filll_io(val, adp->va_window + offset,
2799 (end - offset)/sizeof(u_int32_t));
2800 /* the line may cross the window boundary */
2801 if (offset + cx > banksize) {
2802 ++bank; /* next bank */
2803 vidd_set_win_org(adp, bank*banksize);
2804 end = offset + cx - banksize;
2805 filll_io(val, adp->va_window, end/sizeof(u_int32_t));
2813 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2815 switch (adp->va_info.vi_mem_model) {
2816 case V_INFO_MM_TEXT:
2817 /* do nothing? XXX */
2819 case V_INFO_MM_PLANAR:
2820 planar_fill_rect(adp, val, x, y, cx, cy);
2822 case V_INFO_MM_PACKED:
2823 packed_fill_rect(adp, val, x, y, cx, cy);
2825 case V_INFO_MM_DIRECT:
2826 switch (adp->va_info.vi_pixel_size) {
2827 case sizeof(u_int16_t):
2828 direct_fill_rect16(adp, val, x, y, cx, cy);
2831 direct_fill_rect24(adp, val, x, y, cx, cy);
2833 case sizeof(u_int32_t):
2834 direct_fill_rect32(adp, val, x, y, cx, cy);
2843 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2850 vga_bitblt(video_adapter_t *adp,...)
2856 #endif /* !VGA_NO_MODE_CHANGE */
2859 get_palette(video_adapter_t *adp, int base, int count,
2860 u_char *red, u_char *green, u_char *blue, u_char *trans)
2866 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2870 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2873 if (vga_save_palette2(adp, base, count, r, g, b)) {
2877 copyout(r, red, count);
2878 copyout(g, green, count);
2879 copyout(b, blue, count);
2880 if (trans != NULL) {
2882 copyout(r, trans, count);
2890 set_palette(video_adapter_t *adp, int base, int count,
2891 u_char *red, u_char *green, u_char *blue, u_char *trans)
2898 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2902 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2905 err = copyin(red, r, count);
2907 err = copyin(green, g, count);
2909 err = copyin(blue, b, count);
2911 err = vga_load_palette2(adp, base, count, r, g, b);
2914 return (err ? ENODEV : 0);
2918 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
2921 case FBIO_GETWINORG: /* get frame buffer window origin */
2925 case FBIO_SETWINORG: /* set frame buffer window origin */
2928 case FBIO_SETDISPSTART: /* set display start address */
2929 return (set_display_start(adp,
2930 ((video_display_start_t *)arg)->x,
2931 ((video_display_start_t *)arg)->y)
2934 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
2935 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
2937 case FBIO_GETPALETTE: /* get color palette */
2938 return get_palette(adp, ((video_color_palette_t *)arg)->index,
2939 ((video_color_palette_t *)arg)->count,
2940 ((video_color_palette_t *)arg)->red,
2941 ((video_color_palette_t *)arg)->green,
2942 ((video_color_palette_t *)arg)->blue,
2943 ((video_color_palette_t *)arg)->transparent);
2945 case FBIO_SETPALETTE: /* set color palette */
2946 return set_palette(adp, ((video_color_palette_t *)arg)->index,
2947 ((video_color_palette_t *)arg)->count,
2948 ((video_color_palette_t *)arg)->red,
2949 ((video_color_palette_t *)arg)->green,
2950 ((video_color_palette_t *)arg)->blue,
2951 ((video_color_palette_t *)arg)->transparent);
2953 case FBIOGTYPE: /* get frame buffer type info. */
2954 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
2955 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
2956 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
2957 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
2958 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
2959 ((struct fbtype *)arg)->fb_cmsize = 0;
2961 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
2962 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
2965 case FBIOGETCMAP: /* get color palette */
2966 return get_palette(adp, ((struct fbcmap *)arg)->index,
2967 ((struct fbcmap *)arg)->count,
2968 ((struct fbcmap *)arg)->red,
2969 ((struct fbcmap *)arg)->green,
2970 ((struct fbcmap *)arg)->blue, NULL);
2972 case FBIOPUTCMAP: /* set color palette */
2973 return set_palette(adp, ((struct fbcmap *)arg)->index,
2974 ((struct fbcmap *)arg)->count,
2975 ((struct fbcmap *)arg)->red,
2976 ((struct fbcmap *)arg)->green,
2977 ((struct fbcmap *)arg)->blue, NULL);
2980 return fb_commonioctl(adp, cmd, arg);
2985 dump_buffer(u_char *buf, size_t len)
2989 for(i = 0; i < len;) {
2990 printf("%02x ", buf[i]);
2991 if ((++i % 16) == 0)
2998 * Print some information about the video adapter and video modes,
2999 * with requested level of details.
3004 vga_diag(video_adapter_t *adp, int level)
3017 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
3018 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
3019 printf("vga: CRTC:0x%x, video option:0x%02x, ",
3020 readw(BIOS_PADDRTOVADDR(0x463)),
3021 readb(BIOS_PADDRTOVADDR(0x487)));
3022 printf("rows:%d, cols:%d, font height:%d\n",
3023 readb(BIOS_PADDRTOVADDR(0x44a)),
3024 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
3025 readb(BIOS_PADDRTOVADDR(0x485)));
3026 #endif /* VGA_NO_BIOS */
3027 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
3028 printf("vga: param table EGA/VGA:%p", video_mode_ptr);
3029 printf(", CGA/MDA:%p\n", video_mode_ptr2);
3030 printf("vga: rows_offset:%d\n", rows_offset);
3032 #endif /* FB_DEBUG > 1 */
3034 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
3037 if (adp->va_flags & V_ADP_MODECHANGE) {
3038 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
3039 if (bios_vmode[i].vi_mode == NA)
3041 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
3043 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
3046 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
3047 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
3049 #endif /* FB_DEBUG > 1 */
3051 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
3053 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
3054 if (video_mode_ptr == NULL)
3055 printf("vga%d: %s: WARNING: video mode switching is not "
3056 "fully supported on this adapter\n",
3057 adp->va_unit, adp->va_name);
3062 if (adp->va_type == KD_VGA) {
3063 printf("VGA parameters upon power-up\n");
3064 dump_buffer(adpstate.regs, sizeof(adpstate.regs));
3065 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
3066 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
3069 mp = get_mode_param(adp->va_initial_mode);
3070 if (mp == NULL) /* this shouldn't be happening */
3072 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
3073 dump_buffer(mp, V_MODE_PARAM_SIZE);