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.
29 * $FreeBSD: src/sys/dev/fb/vga.c,v 1.9.2.1 2001/08/11 02:58:44 yokota Exp $
30 * $DragonFly: src/sys/dev/video/fb/vga.c,v 1.13 2005/07/09 22:39:58 swildner Exp $
35 #include "opt_syscons.h" /* should be removed in the future, XXX */
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
41 #include <sys/fcntl.h>
42 #include <sys/malloc.h>
44 #include <sys/thread2.h>
47 #include <vm/vm_param.h>
50 #include <machine/md_var.h>
51 #include <machine/pc/bios.h>
56 #include <bus/isa/isareg.h>
63 vga_probe_unit(int unit, video_adapter_t *buf, int flags)
69 sw = vid_get_switch(VGA_DRIVER_NAME);
72 error = (*sw->probe)(unit, &adp, NULL, flags);
75 bcopy(adp, buf, sizeof(*buf));
80 vga_attach_unit(int unit, vga_softc_t *sc, int flags)
85 sw = vid_get_switch(VGA_DRIVER_NAME);
89 error = (*sw->probe)(unit, &sc->adp, NULL, flags);
92 return (*sw->init)(unit, sc->adp, flags);
95 /* cdev driver functions */
97 #ifdef FB_INSTALL_CDEV
100 vga_open(dev_t dev, vga_softc_t *sc, int flag, int mode, struct thread *td)
104 if (mode & (O_CREAT | O_APPEND | O_TRUNC))
107 return genfbopen(&sc->gensc, sc->adp, flag, mode, td);
111 vga_close(dev_t dev, vga_softc_t *sc, int flag, int mode, struct thread *td)
113 return genfbclose(&sc->gensc, sc->adp, flag, mode, td);
117 vga_read(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
119 return genfbread(&sc->gensc, sc->adp, uio, flag);
123 vga_write(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
125 return genfbread(&sc->gensc, sc->adp, uio, flag);
129 vga_ioctl(dev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
132 return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, td);
136 vga_mmap(dev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot)
138 return genfbmmap(&sc->gensc, sc->adp, offset, prot);
141 #endif /* FB_INSTALL_CDEV */
145 #include <machine/clock.h>
146 #include <machine/pc/vesa.h>
148 #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED)
149 #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED)
150 #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED)
152 /* for compatibility with old kernel options */
153 #ifdef SC_ALT_SEQACCESS
154 #undef SC_ALT_SEQACCESS
155 #undef VGA_ALT_SEQACCESS
156 #define VGA_ALT_SEQACCESS 1
161 #undef VGA_SLOW_IOACCESS
162 #define VGA_SLOW_IOACCESS 1
165 /* this should really be in `rtc.h' */
166 #define RTC_EQUIPMENT 0x14
169 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
170 #define V_MODE_PARAM_SIZE 64
172 /* video adapter state buffer */
175 #define V_STATE_SIG 0x736f6962
176 u_char regs[V_MODE_PARAM_SIZE];
178 typedef struct adp_state adp_state_t;
180 /* video adapter information */
184 #define DCC_EGAMONO 3
189 * NOTE: `va_window' should have a virtual address, but is initialized
190 * with a physical address in the following table, as verify_adapter()
191 * will perform address conversion at run-time.
193 static video_adapter_t adapter_init_value[] = {
195 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC,
196 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
199 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
200 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
203 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
204 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
207 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC,
208 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
211 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
212 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
215 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
216 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
220 static video_adapter_t biosadapter[2];
221 static int biosadapters = 0;
223 /* video driver declarations */
224 static int vga_configure(int flags);
225 int (*vga_sub_configure)(int flags);
227 static int vga_nop(void);
229 static int vga_error(void);
230 static vi_probe_t vga_probe;
231 static vi_init_t vga_init;
232 static vi_get_info_t vga_get_info;
233 static vi_query_mode_t vga_query_mode;
234 static vi_set_mode_t vga_set_mode;
235 static vi_save_font_t vga_save_font;
236 static vi_load_font_t vga_load_font;
237 static vi_show_font_t vga_show_font;
238 static vi_save_palette_t vga_save_palette;
239 static vi_load_palette_t vga_load_palette;
240 static vi_set_border_t vga_set_border;
241 static vi_save_state_t vga_save_state;
242 static vi_load_state_t vga_load_state;
243 static vi_set_win_org_t vga_set_origin;
244 static vi_read_hw_cursor_t vga_read_hw_cursor;
245 static vi_set_hw_cursor_t vga_set_hw_cursor;
246 static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape;
247 static vi_blank_display_t vga_blank_display;
248 static vi_mmap_t vga_mmap_buf;
249 static vi_ioctl_t vga_dev_ioctl;
250 #ifndef VGA_NO_MODE_CHANGE
251 static vi_clear_t vga_clear;
252 static vi_fill_rect_t vga_fill_rect;
253 static vi_bitblt_t vga_bitblt;
254 #else /* VGA_NO_MODE_CHANGE */
255 #define vga_clear (vi_clear_t *)vga_error
256 #define vga_fill_rect (vi_fill_rect_t *)vga_error
257 #define vga_bitblt (vi_bitblt_t *)vga_error
259 static vi_diag_t vga_diag;
261 static video_switch_t vgavidsw = {
278 vga_set_hw_cursor_shape,
290 VIDEO_DRIVER(mda, vgavidsw, NULL);
291 VIDEO_DRIVER(cga, vgavidsw, NULL);
292 VIDEO_DRIVER(ega, vgavidsw, NULL);
293 VIDEO_DRIVER(vga, vgavidsw, vga_configure);
295 /* VGA BIOS standard video modes */
299 static video_info_t bios_vmode[] = {
301 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1,
302 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
303 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1,
304 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
305 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1,
306 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
307 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1,
308 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
310 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
311 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
312 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
313 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
314 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
315 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
316 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
317 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
319 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
320 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
321 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1,
322 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
323 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
324 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
326 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1,
327 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
329 { M_ENH_B80x43, 0, 80, 43, 8, 8, 2, 1,
330 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
331 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1,
332 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
334 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1,
335 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
336 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
337 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
338 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1,
339 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
340 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1,
341 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
342 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1,
343 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
344 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1,
345 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
347 #ifndef VGA_NO_MODE_CHANGE
350 { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1,
351 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
352 { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1,
353 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
354 { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1,
355 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
356 { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1,
357 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
358 { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1,
359 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
360 { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1,
361 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
362 { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1,
363 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
364 { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1,
365 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
366 { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1,
367 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
368 { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1,
369 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
370 #endif /* VGA_WIDTH90 */
373 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
374 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
375 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
376 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
377 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1,
378 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
380 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4,
381 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
383 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4,
384 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
386 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
387 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
389 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
390 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
392 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
393 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
395 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
396 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
399 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
400 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
402 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
403 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
405 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1,
406 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
407 V_INFO_MM_PACKED, 1 },
408 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4,
409 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
411 #endif /* VGA_NO_MODE_CHANGE */
416 static int vga_init_done = FALSE;
417 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
418 static u_char *video_mode_ptr = NULL; /* EGA/VGA */
419 static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */
421 static u_char *mode_map[V_MODE_MAP_SIZE];
422 static adp_state_t adpstate;
423 static adp_state_t adpstate2;
424 static int rows_offset = 1;
426 /* local macros and functions */
427 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
429 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
430 static void map_mode_table(u_char *map[], u_char *table, int max);
432 static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max,
434 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
435 static int map_mode_num(int mode);
437 static int map_gen_mode_num(int type, int color, int mode);
438 static int map_bios_mode_num(int type, int color, int bios_mode);
439 static u_char *get_mode_param(int mode);
441 static void fill_adapter_param(int code, video_adapter_t *adp);
443 static int verify_adapter(video_adapter_t *adp);
444 static void update_adapter_info(video_adapter_t *adp, video_info_t *info);
445 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
446 #define COMP_IDENTICAL 0
447 #define COMP_SIMILAR 1
448 #define COMP_DIFFERENT 2
449 static int comp_adpregs(u_char *buf1, u_char *buf2);
451 static int probe_adapters(void);
452 static int set_line_length(video_adapter_t *adp, int pixel);
453 static int set_display_start(video_adapter_t *adp, int x, int y);
455 #ifndef VGA_NO_MODE_CHANGE
457 static void set_width90(adp_state_t *params);
459 #endif /* !VGA_NO_MODE_CHANGE */
461 #ifndef VGA_NO_FONT_LOADING
462 #define PARAM_BUFSIZE 6
463 static void set_font_mode(video_adapter_t *adp, u_char *buf);
464 static void set_normal_mode(video_adapter_t *adp, u_char *buf);
467 #ifndef VGA_NO_MODE_CHANGE
468 static void filll_io(int val, vm_offset_t d, size_t size);
469 static void planar_fill(video_adapter_t *adp, int val);
470 static void packed_fill(video_adapter_t *adp, int val);
471 static void direct_fill(video_adapter_t *adp, int val);
473 static void planar_fill_rect(video_adapter_t *adp, int val, int x, int y,
475 static void packed_fill_rect(video_adapter_t *adp, int val, int x, int y,
477 static void direct_fill_rect16(video_adapter_t *adp, int val, int x, int y,
479 static void direct_fill_rect24(video_adapter_t *adp, int val, int x, int y,
481 static void direct_fill_rect32(video_adapter_t *adp, int val, int x, int y,
484 #endif /* !VGA_NO_MODE_CHANGE */
486 static void dump_buffer(u_char *buf, size_t len);
488 #define ISMAPPED(pa, width) \
489 (((pa) <= (u_long)0x1000 - (width)) \
490 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
492 #define prologue(adp, flag, err) \
493 if (!vga_init_done || !((adp)->va_flags & (flag))) \
496 /* a backdoor for the console driver */
498 vga_configure(int flags)
503 for (i = 0; i < biosadapters; ++i) {
504 if (!probe_done(&biosadapter[i]))
506 biosadapter[i].va_flags |= V_ADP_INITIALIZED;
507 if (!config_done(&biosadapter[i])) {
508 if (vid_register(&biosadapter[i]) < 0)
510 biosadapter[i].va_flags |= V_ADP_REGISTERED;
513 if (vga_sub_configure != NULL)
514 (*vga_sub_configure)(flags);
519 /* local subroutines */
521 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
522 /* construct the mode parameter map */
524 map_mode_table(u_char *map[], u_char *table, int max)
528 for(i = 0; i < max; ++i)
529 map[i] = table + i*V_MODE_PARAM_SIZE;
530 for(; i < V_MODE_MAP_SIZE; ++i)
533 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
536 clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
542 * NOTE: we don't touch `bios_vmode[]' because it is shared
545 for(i = 0; i < max; ++i) {
546 if (vga_get_info(adp, i, &info))
548 if ((info.vi_flags & V_INFO_COLOR) != color)
553 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
554 /* map the non-standard video mode to a known mode number */
556 map_mode_num(int mode)
562 { M_ENH_B80x43, M_ENH_B80x25 },
563 { M_ENH_C80x43, M_ENH_C80x25 },
564 { M_VGA_M80x30, M_VGA_M80x25 },
565 { M_VGA_C80x30, M_VGA_C80x25 },
566 { M_VGA_M80x50, M_VGA_M80x25 },
567 { M_VGA_C80x50, M_VGA_C80x25 },
568 { M_VGA_M80x60, M_VGA_M80x25 },
569 { M_VGA_C80x60, M_VGA_C80x25 },
571 { M_VGA_M90x25, M_VGA_M80x25 },
572 { M_VGA_C90x25, M_VGA_C80x25 },
573 { M_VGA_M90x30, M_VGA_M80x25 },
574 { M_VGA_C90x30, M_VGA_C80x25 },
575 { M_VGA_M90x43, M_ENH_B80x25 },
576 { M_VGA_C90x43, M_ENH_C80x25 },
577 { M_VGA_M90x50, M_VGA_M80x25 },
578 { M_VGA_C90x50, M_VGA_C80x25 },
579 { M_VGA_M90x60, M_VGA_M80x25 },
580 { M_VGA_C90x60, M_VGA_C80x25 },
582 { M_VGA_MODEX, M_VGA_CG320 },
586 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
587 if (mode_map[i].from == mode)
588 return mode_map[i].to;
592 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
594 /* map a generic video mode to a known mode number */
596 map_gen_mode_num(int type, int color, int mode)
603 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, },
604 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, },
605 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, },
606 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, },
610 if (mode == M_TEXT_80x25) {
624 return M_EGAMONO80x25;
632 return M_EGAMONO80x25; /* XXX: this name is confusing */
639 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
640 if (mode_map[i].from == mode)
641 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono);
646 /* turn the BIOS video number into our video mode number */
648 map_bios_mode_num(int type, int color, int bios_mode)
650 static int cga_modes[7] = {
651 M_B40x25, M_C40x25, /* 0, 1 */
652 M_B80x25, M_C80x25, /* 2, 3 */
656 static int ega_modes[17] = {
657 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */
658 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */
661 M_EGAMONO80x25, /* 7 */
665 M_ENHMONOAPA2, /* XXX: video momery > 64K */
666 M_ENH_CG640, /* XXX: video momery > 64K */
668 static int vga_modes[20] = {
669 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
670 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
673 M_VGA_M80x25, /* 7 */
679 M_BG640x480, M_CG640x480,
686 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0]))
687 return vga_modes[bios_mode];
695 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0]))
696 return ega_modes[bios_mode];
700 return M_EGAMONO80x25;
704 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0]))
705 return cga_modes[bios_mode];
712 return M_EGAMONO80x25; /* XXX: this name is confusing */
720 /* look up a parameter table entry */
722 *get_mode_param(int mode)
724 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
725 if (mode >= V_MODE_MAP_SIZE)
726 mode = map_mode_num(mode);
728 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
729 return mode_map[mode];
736 fill_adapter_param(int code, video_adapter_t *adp)
742 { DCC_MONO, DCC_EGA40 /* CGA monitor */ },
743 { DCC_MONO, DCC_EGA80 /* CGA monitor */ },
744 { DCC_MONO, DCC_EGA80 },
745 { DCC_MONO, DCC_EGA80 },
746 { DCC_CGA40, DCC_EGAMONO },
747 { DCC_CGA80, DCC_EGAMONO },
748 { DCC_EGA40 /* CGA monitor */, DCC_MONO},
749 { DCC_EGA80 /* CGA monitor */, DCC_MONO},
750 { DCC_EGA80, DCC_MONO },
751 { DCC_EGA80, DCC_MONO },
752 { DCC_EGAMONO, DCC_CGA40 },
753 { DCC_EGAMONO, DCC_CGA80 },
756 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) {
757 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
758 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
760 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
761 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
764 #endif /* VGA_NO_BIOS */
767 verify_adapter(video_adapter_t *adp)
771 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
775 buf = BIOS_PADDRTOVADDR(adp->va_window);
778 if (readw(buf) != 0xA55A)
782 switch (adp->va_type) {
785 outb(adp->va_crtc_addr, 7);
786 if (inb(adp->va_crtc_addr) == 7) {
787 adp->va_type = KD_VGA;
788 adp->va_name = "vga";
789 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
791 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
792 /* the color adapter may be in the 40x25 mode... XXX */
794 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
795 /* get the BIOS video mode pointer */
796 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
797 p = BIOS_SADDRTOLADDR(p);
798 if (ISMAPPED(p, sizeof(u_int32_t))) {
799 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
800 p = BIOS_SADDRTOLADDR(p);
801 if (ISMAPPED(p, V_MODE_PARAM_SIZE))
802 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
808 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
809 /* may be in the 40x25 mode... XXX */
810 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
811 /* get the BIOS video mode pointer */
812 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
813 p = BIOS_SADDRTOLADDR(p);
814 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
819 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
820 /* get the BIOS video mode pointer */
821 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
822 p = BIOS_SADDRTOLADDR(p);
823 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
832 update_adapter_info(video_adapter_t *adp, video_info_t *info)
834 adp->va_flags &= ~V_ADP_COLOR;
836 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
838 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
839 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
840 adp->va_window_size = info->vi_window_size;
841 adp->va_window_gran = info->vi_window_gran;
842 adp->va_window_orig = 0;
844 adp->va_buffer = info->vi_buffer;
845 adp->va_buffer_size = info->vi_buffer_size;
846 if (info->vi_mem_model == V_INFO_MM_VGAX) {
847 adp->va_line_width = info->vi_width/2;
848 } else if (info->vi_flags & V_INFO_GRAPHICS) {
849 switch (info->vi_depth/info->vi_planes) {
851 adp->va_line_width = info->vi_width/8;
854 adp->va_line_width = info->vi_width/4;
857 adp->va_line_width = info->vi_width/2;
860 default: /* shouldn't happen */
861 adp->va_line_width = info->vi_width;
865 adp->va_line_width = info->vi_width;
867 adp->va_disp_start.x = 0;
868 adp->va_disp_start.y = 0;
869 bcopy(info, &adp->va_info, sizeof(adp->va_info));
872 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
873 /* compare two parameter table entries */
875 comp_adpregs(u_char *buf1, u_char *buf2)
879 } params[V_MODE_PARAM_SIZE] = {
880 {0xff}, {0x00}, {0xff}, /* COLS}, ROWS}, POINTS */
881 {0x00}, {0x00}, /* page length */
882 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */
883 {0xf3}, /* misc register */
884 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */
885 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
886 {0x00}, {0x00}, {0x00}, {0x00}, {0x00},
887 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
888 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
889 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */
890 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
891 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
892 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
893 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */
894 {0xff}, {0xff}, {0xff}, {0xff},
896 int identical = TRUE;
899 if ((buf1 == NULL) || (buf2 == NULL))
900 return COMP_DIFFERENT;
902 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
903 if (params[i].mask == 0) /* don't care */
905 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
906 return COMP_DIFFERENT;
907 if (buf1[i] != buf2[i])
910 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
912 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
914 /* probe video adapters and return the number of detected adapters */
918 video_adapter_t *adp;
920 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
925 /* do this test only once */
928 vga_init_done = TRUE;
931 * Locate display adapters.
932 * The AT architecture supports upto two adapters. `syscons' allows
933 * the following combinations of adapters:
935 * 2) MDA + EGA/VGA color
936 * 3) CGA + EGA/VGA mono
937 * Note that `syscons' doesn't bother with MCGA as it is only
938 * avaiable for low end PS/2 models which has 80286 or earlier CPUs,
939 * thus, they are not running FreeBSD!
940 * When there are two adapaters in the system, one becomes `primary'
941 * and the other `secondary'. The EGA adapter has a set of DIP
942 * switches on board for this information and the EGA BIOS copies
943 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88).
944 * The VGA BIOS has more sophisticated mechanism and has this
945 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains
946 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
950 * Check rtc and BIOS data area.
951 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
952 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are
953 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets
954 * these bits in BIOSDATA_EQUIPMENT according to the monitor
958 if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) {
959 /* EGA/VGA BIOS is present */
960 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
963 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */
965 /* EGA/VGA: shouldn't be happening */
966 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
971 /* FIXME: switch to the 80x25 mode? XXX */
972 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
973 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
977 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
978 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
982 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
983 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
988 /* assume EGA/VGA? XXX */
989 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
990 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
991 #endif /* VGA_NO_BIOS */
994 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
996 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
997 biosadapter[V_ADP_SECONDARY].va_mode =
998 biosadapter[V_ADP_SECONDARY].va_initial_mode =
999 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type,
1000 biosadapter[V_ADP_SECONDARY].va_flags
1002 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
1004 biosadapter[V_ADP_SECONDARY].va_type = -1;
1006 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
1008 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
1010 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode =
1011 readb(BIOS_PADDRTOVADDR(0x449));
1013 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */
1015 biosadapter[V_ADP_PRIMARY].va_mode =
1016 biosadapter[V_ADP_PRIMARY].va_initial_mode =
1017 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type,
1018 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
1019 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
1021 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
1022 biosadapter[V_ADP_SECONDARY].va_type = -1;
1024 if (biosadapters == 0)
1025 return biosadapters;
1026 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
1027 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
1029 #if 0 /* we don't need these... */
1030 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
1031 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
1036 * We cannot have two video adapter of the same type; there must be
1037 * only one of color or mono adapter, or one each of them.
1039 if (biosadapters > 1) {
1040 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
1042 /* we have two mono or color adapters!! */
1043 return (biosadapters = 0);
1048 * Ensure a zero start address. This is mainly to recover after
1049 * switching from pcvt using userconfig(). The registers are w/o
1050 * for old hardware so it's too hard to relocate the active screen
1052 * This must be done before vga_save_state() for VGA.
1054 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
1055 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1056 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
1057 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1059 /* the video mode parameter table in EGA/VGA BIOS */
1060 /* NOTE: there can be only one EGA/VGA, wheather color or mono,
1061 * recognized by the video BIOS.
1063 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
1064 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
1065 adp = &biosadapter[V_ADP_PRIMARY];
1066 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
1067 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
1068 adp = &biosadapter[V_ADP_SECONDARY];
1072 bzero(mode_map, sizeof(mode_map));
1074 if (adp->va_type == KD_VGA) {
1075 vga_save_state(adp, &adpstate, sizeof(adpstate));
1076 for(i = 0; i < 16; i++)
1077 adp->va_palette_regs[i] = adpstate.regs[35 + i];
1078 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1079 mode_map[adp->va_initial_mode] = adpstate.regs;
1081 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1082 if (video_mode_ptr == NULL) {
1083 mode_map[adp->va_initial_mode] = adpstate.regs;
1086 /* discard the table if we are not familiar with it... */
1087 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
1088 mp = get_mode_param(adp->va_initial_mode);
1090 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
1091 switch (comp_adpregs(adpstate.regs, mp)) {
1092 case COMP_IDENTICAL:
1094 * OK, this parameter table looks reasonably familiar
1098 * This is a kludge for Toshiba DynaBook SS433
1099 * whose BIOS video mode table entry has the actual #
1100 * of rows at the offset 1; BIOSes from other
1101 * manufacturers store the # of rows - 1 there. XXX
1103 rows_offset = adpstate.regs[1] + 1 - mp[1];
1108 * Not exactly the same, but similar enough to be
1109 * trusted. However, use the saved register values
1110 * for the initial mode and other modes which are
1111 * based on the initial mode.
1113 mode_map[adp->va_initial_mode] = adpstate.regs;
1114 rows_offset = adpstate.regs[1] + 1 - mp[1];
1115 adpstate.regs[1] -= rows_offset - 1;
1118 case COMP_DIFFERENT:
1121 * Don't use the paramter table in BIOS. It doesn't
1122 * look familiar to us. Video mode switching is allowed
1123 * only if the new mode is the same as or based on
1126 video_mode_ptr = NULL;
1127 bzero(mode_map, sizeof(mode_map));
1128 mode_map[adp->va_initial_mode] = adpstate.regs;
1133 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1135 #ifndef VGA_NO_MODE_CHANGE
1136 adp->va_flags |= V_ADP_MODECHANGE;
1138 #ifndef VGA_NO_FONT_LOADING
1139 adp->va_flags |= V_ADP_FONT;
1141 } else if (adp->va_type == KD_EGA) {
1142 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1144 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1145 if (video_mode_ptr == NULL) {
1148 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
1149 /* XXX how can one validate the EGA table... */
1150 mp = get_mode_param(adp->va_initial_mode);
1152 adp->va_flags |= V_ADP_MODECHANGE;
1153 #ifndef VGA_NO_FONT_LOADING
1154 adp->va_flags |= V_ADP_FONT;
1159 * This is serious. We will not be able to switch video
1162 video_mode_ptr = NULL;
1163 bzero(mode_map, sizeof(mode_map));
1167 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1171 /* remove conflicting modes if we have more than one adapter */
1172 if (biosadapters > 0) {
1173 for (i = 0; i < biosadapters; ++i) {
1174 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
1176 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
1177 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1179 if ((biosadapter[i].va_type == KD_VGA)
1180 || (biosadapter[i].va_type == KD_EGA)) {
1181 biosadapter[i].va_io_base =
1182 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1184 biosadapter[i].va_io_size = 32;
1189 /* buffer address */
1190 vga_get_info(&biosadapter[V_ADP_PRIMARY],
1191 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
1192 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1193 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
1195 if (biosadapters > 1) {
1196 vga_get_info(&biosadapter[V_ADP_SECONDARY],
1197 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
1198 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1199 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
1203 * XXX: we should verify the following values for the primary adapter...
1204 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
1205 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
1206 * ? 0 : V_ADP_COLOR;
1207 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
1208 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
1209 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
1210 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
1213 return biosadapters;
1216 /* set the scan line length in pixel */
1218 set_line_length(video_adapter_t *adp, int pixel)
1221 int ppw; /* pixels per word */
1222 int bpl; /* bytes per line */
1225 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1227 mp = get_mode_param(adp->va_mode);
1231 switch (adp->va_info.vi_mem_model) {
1232 case V_INFO_MM_PLANAR:
1233 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1234 count = (pixel + ppw - 1)/ppw/2;
1235 bpl = ((pixel + ppw - 1)/ppw/2)*4;
1237 case V_INFO_MM_PACKED:
1238 count = (pixel + 7)/8;
1239 bpl = ((pixel + 7)/8)*8;
1241 case V_INFO_MM_TEXT:
1242 count = (pixel + 7)/8; /* columns */
1243 bpl = (pixel + 7)/8; /* columns */
1249 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
1250 count *= 2; /* byte mode */
1251 outb(adp->va_crtc_addr, 0x13);
1252 outb(adp->va_crtc_addr + 1, count);
1253 adp->va_line_width = bpl;
1259 set_display_start(video_adapter_t *adp, int x, int y)
1261 int off; /* byte offset (graphics mode)/word offset (text mode) */
1262 int poff; /* pixel offset */
1263 int roff; /* row offset */
1264 int ppb; /* pixels per byte */
1266 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1268 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
1269 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1270 off = y*adp->va_line_width + x/ppb;
1274 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1283 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
1284 roff = y%adp->va_info.vi_cheight;
1285 /* FIXME: is this correct? XXX */
1293 outb(adp->va_crtc_addr, 0xc); /* high */
1294 outb(adp->va_crtc_addr + 1, off >> 8);
1295 outb(adp->va_crtc_addr, 0xd); /* low */
1296 outb(adp->va_crtc_addr + 1, off & 0xff);
1298 /* horizontal pel pan */
1299 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1300 inb(adp->va_crtc_addr + 6);
1301 outb(ATC, 0x13 | 0x20);
1303 inb(adp->va_crtc_addr + 6);
1307 /* preset raw scan */
1308 outb(adp->va_crtc_addr, 8);
1309 outb(adp->va_crtc_addr + 1, roff);
1311 adp->va_disp_start.x = x;
1312 adp->va_disp_start.y = y;
1316 #ifndef VGA_NO_MODE_CHANGE
1317 #ifdef __i386__ /* XXX */
1319 fill(int val, void *d, size_t size)
1326 #endif /* __i386__ */
1329 filll_io(int val, vm_offset_t d, size_t size)
1331 while (size-- > 0) {
1333 d += sizeof(u_int32_t);
1336 #endif /* !VGA_NO_MODE_CHANGE */
1355 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
1358 if (unit >= biosadapters)
1361 *adpp = &biosadapter[unit];
1367 vga_init(int unit, video_adapter_t *adp, int flags)
1369 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
1372 if (!init_done(adp)) {
1373 /* nothing to do really... */
1374 adp->va_flags |= V_ADP_INITIALIZED;
1377 if (!config_done(adp)) {
1378 if (vid_register(adp) < 0)
1380 adp->va_flags |= V_ADP_REGISTERED;
1382 if (vga_sub_configure != NULL)
1383 (*vga_sub_configure)(0);
1390 * Return the video_info structure of the requested video mode.
1395 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
1402 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
1403 #ifndef VGA_NO_MODE_CHANGE
1404 if (adp->va_flags & V_ADP_MODECHANGE) {
1406 * If the parameter table entry for this mode is not found,
1407 * the mode is not supported...
1409 if (get_mode_param(mode) == NULL)
1412 #endif /* VGA_NO_MODE_CHANGE */
1415 * Even if we don't support video mode switching on this adapter,
1416 * the information on the initial (thus current) video mode
1417 * should be made available.
1419 if (mode != adp->va_initial_mode)
1423 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1424 if (bios_vmode[i].vi_mode == NA)
1426 if (mode == bios_vmode[i].vi_mode) {
1427 *info = bios_vmode[i];
1429 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
1438 * Find a video mode matching the requested parameters.
1439 * Fields filled with 0 are considered "don't care" fields and
1445 vga_query_mode(video_adapter_t *adp, video_info_t *info)
1452 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1453 if (bios_vmode[i].vi_mode == NA)
1456 if ((info->vi_width != 0)
1457 && (info->vi_width != bios_vmode[i].vi_width))
1459 if ((info->vi_height != 0)
1460 && (info->vi_height != bios_vmode[i].vi_height))
1462 if ((info->vi_cwidth != 0)
1463 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
1465 if ((info->vi_cheight != 0)
1466 && (info->vi_cheight != bios_vmode[i].vi_cheight))
1468 if ((info->vi_depth != 0)
1469 && (info->vi_depth != bios_vmode[i].vi_depth))
1471 if ((info->vi_planes != 0)
1472 && (info->vi_planes != bios_vmode[i].vi_planes))
1474 /* XXX: should check pixel format, memory model */
1475 if ((info->vi_flags != 0)
1476 && (info->vi_flags != bios_vmode[i].vi_flags))
1479 /* verify if this mode is supported on this adapter */
1480 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
1489 * Change the video mode.
1494 #ifndef VGA_NO_MODE_CHANGE
1497 set_width90(adp_state_t *params)
1500 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
1501 * and alexv@sui.gda.itesm.mx.
1503 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */
1504 params->regs[10+0x0] = 0x6b;
1505 params->regs[10+0x1] = 0x59;
1506 params->regs[10+0x2] = 0x5a;
1507 params->regs[10+0x3] = 0x8e;
1508 params->regs[10+0x4] = 0x5e;
1509 params->regs[10+0x5] = 0x8a;
1510 params->regs[10+0x13] = 45;
1511 params->regs[35+0x13] = 0;
1513 #endif /* VGA_WIDTH90 */
1514 #endif /* !VGA_NO_MODE_CHANGE */
1517 vga_set_mode(video_adapter_t *adp, int mode)
1519 #ifndef VGA_NO_MODE_CHANGE
1523 prologue(adp, V_ADP_MODECHANGE, ENODEV);
1525 mode = map_gen_mode_num(adp->va_type,
1526 adp->va_flags & V_ADP_COLOR, mode);
1527 if (vga_get_info(adp, mode, &info))
1531 printf("vga_set_mode(): setting mode %d\n", mode);
1534 params.sig = V_STATE_SIG;
1535 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1539 case M_VGA_C90x60: case M_VGA_M90x60:
1540 set_width90(¶ms);
1543 case M_VGA_C80x60: case M_VGA_M80x60:
1544 params.regs[2] = 0x08;
1545 params.regs[19] = 0x47;
1549 case M_VGA_C90x30: case M_VGA_M90x30:
1550 set_width90(¶ms);
1553 case M_VGA_C80x30: case M_VGA_M80x30:
1554 params.regs[19] = 0x4f;
1556 params.regs[9] |= 0xc0;
1557 params.regs[16] = 0x08;
1558 params.regs[17] = 0x3e;
1559 params.regs[26] = 0xea;
1560 params.regs[28] = 0xdf;
1561 params.regs[31] = 0xe7;
1562 params.regs[32] = 0x04;
1566 case M_VGA_C90x43: case M_VGA_M90x43:
1567 set_width90(¶ms);
1570 case M_ENH_C80x43: case M_ENH_B80x43:
1571 params.regs[28] = 87;
1575 case M_VGA_C90x50: case M_VGA_M90x50:
1576 set_width90(¶ms);
1579 case M_VGA_C80x50: case M_VGA_M80x50:
1582 params.regs[19] = 7;
1586 case M_VGA_C90x25: case M_VGA_M90x25:
1587 set_width90(¶ms);
1590 case M_VGA_C40x25: case M_VGA_C80x25:
1592 case M_B40x25: case M_C40x25:
1593 case M_B80x25: case M_C80x25:
1594 case M_ENH_B40x25: case M_ENH_C40x25:
1595 case M_ENH_B80x25: case M_ENH_C80x25:
1596 case M_EGAMONO80x25:
1599 vga_load_state(adp, ¶ms);
1603 /* "unchain" the VGA mode */
1604 params.regs[5-1+0x04] &= 0xf7;
1605 params.regs[5-1+0x04] |= 0x04;
1606 /* turn off doubleword mode */
1607 params.regs[10+0x14] &= 0xbf;
1608 /* turn off word addressing */
1609 params.regs[10+0x17] |= 0x40;
1610 /* set logical screen width */
1611 params.regs[10+0x13] = 80;
1613 params.regs[10+0x11] = 0x2c;
1614 params.regs[10+0x06] = 0x0d;
1615 params.regs[10+0x07] = 0x3e;
1616 params.regs[10+0x10] = 0xea;
1617 params.regs[10+0x11] = 0xac;
1618 params.regs[10+0x12] = 0xdf;
1619 params.regs[10+0x15] = 0xe7;
1620 params.regs[10+0x16] = 0x06;
1621 /* set vertical sync polarity to reflect aspect ratio */
1622 params.regs[9] = 0xe3;
1625 case M_BG320: case M_CG320: case M_BG640:
1626 case M_CG320_D: case M_CG640_E:
1627 case M_CG640x350: case M_ENH_CG640:
1628 case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
1631 vga_load_state(adp, ¶ms);
1638 adp->va_mode = mode;
1639 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1640 update_adapter_info(adp, &info);
1642 /* move hardware cursor out of the way */
1643 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
1646 #else /* VGA_NO_MODE_CHANGE */
1648 #endif /* VGA_NO_MODE_CHANGE */
1651 #ifndef VGA_NO_FONT_LOADING
1654 set_font_mode(video_adapter_t *adp, u_char *buf)
1660 /* save register values */
1661 if (adp->va_type == KD_VGA) {
1662 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1663 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1664 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1665 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1666 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1667 inb(adp->va_crtc_addr + 6);
1668 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1669 } else /* if (adp->va_type == KD_EGA) */ {
1671 * EGA cannot be read; copy parameters from the mode parameter
1674 mp = get_mode_param(adp->va_mode);
1675 buf[0] = mp[5 + 0x02 - 1];
1676 buf[1] = mp[5 + 0x04 - 1];
1677 buf[2] = mp[55 + 0x04];
1678 buf[3] = mp[55 + 0x05];
1679 buf[4] = mp[55 + 0x06];
1680 buf[5] = mp[35 + 0x10];
1683 /* setup vga for loading fonts */
1684 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1685 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1686 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1687 outb(ATC, 0x20); /* enable palette */
1689 #if VGA_SLOW_IOACCESS
1690 #ifdef VGA_ALT_SEQACCESS
1691 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1693 outb(TSIDX, 0x02); outb(TSREG, 0x04);
1694 outb(TSIDX, 0x04); outb(TSREG, 0x07);
1695 #ifdef VGA_ALT_SEQACCESS
1696 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1698 outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
1699 outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
1700 outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
1701 #else /* VGA_SLOW_IOACCESS */
1702 #ifdef VGA_ALT_SEQACCESS
1703 outw(TSIDX, 0x0100);
1705 outw(TSIDX, 0x0402);
1706 outw(TSIDX, 0x0704);
1707 #ifdef VGA_ALT_SEQACCESS
1708 outw(TSIDX, 0x0300);
1710 outw(GDCIDX, 0x0204);
1711 outw(GDCIDX, 0x0005);
1712 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1713 #endif /* VGA_SLOW_IOACCESS */
1719 set_normal_mode(video_adapter_t *adp, u_char *buf)
1723 /* setup vga for normal operation mode again */
1724 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1725 outb(ATC, 0x10); outb(ATC, buf[5]);
1726 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1727 outb(ATC, 0x20); /* enable palette */
1729 #if VGA_SLOW_IOACCESS
1730 #ifdef VGA_ALT_SEQACCESS
1731 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1733 outb(TSIDX, 0x02); outb(TSREG, buf[0]);
1734 outb(TSIDX, 0x04); outb(TSREG, buf[1]);
1735 #ifdef VGA_ALT_SEQACCESS
1736 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1738 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
1739 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
1740 if (adp->va_crtc_addr == MONO_CRTC) {
1741 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
1743 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
1745 #else /* VGA_SLOW_IOACCESS */
1746 #ifdef VGA_ALT_SEQACCESS
1747 outw(TSIDX, 0x0100);
1749 outw(TSIDX, 0x0002 | (buf[0] << 8));
1750 outw(TSIDX, 0x0004 | (buf[1] << 8));
1751 #ifdef VGA_ALT_SEQACCESS
1752 outw(TSIDX, 0x0300);
1754 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1755 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1756 if (adp->va_crtc_addr == MONO_CRTC)
1757 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
1759 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1760 #endif /* VGA_SLOW_IOACCESS */
1765 #endif /* VGA_NO_FONT_LOADING */
1769 * Read the font data in the requested font page from the video adapter.
1774 vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1777 #ifndef VGA_NO_FONT_LOADING
1778 u_char buf[PARAM_BUFSIZE];
1781 #ifdef VGA_ALT_SEQACCESS
1785 prologue(adp, V_ADP_FONT, ENODEV);
1787 if (fontsize < 14) {
1790 } else if (fontsize >= 32) {
1792 } else if (fontsize >= 16) {
1800 if (page < 0 || page >= 8)
1802 segment = FONT_BUF + 0x4000*page;
1806 #ifdef VGA_ALT_SEQACCESS
1807 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1809 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1810 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1811 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1812 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1817 set_font_mode(adp, buf);
1818 if (fontsize == 32) {
1819 bcopy_fromio(segment + ch*32, data, fontsize*count);
1821 for (c = ch; count > 0; ++c, --count) {
1822 bcopy_fromio(segment + c*32, data, fontsize);
1826 set_normal_mode(adp, buf);
1828 #ifdef VGA_ALT_SEQACCESS
1829 if (adp->va_type == KD_VGA) {
1831 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1832 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1833 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1839 #else /* VGA_NO_FONT_LOADING */
1841 #endif /* VGA_NO_FONT_LOADING */
1846 * Set the font data in the requested font page.
1847 * NOTE: it appears that some recent video adapters do not support
1848 * the font page other than 0... XXX
1853 vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1856 #ifndef VGA_NO_FONT_LOADING
1857 u_char buf[PARAM_BUFSIZE];
1860 #ifdef VGA_ALT_SEQACCESS
1864 prologue(adp, V_ADP_FONT, ENODEV);
1866 if (fontsize < 14) {
1869 } else if (fontsize >= 32) {
1871 } else if (fontsize >= 16) {
1879 if (page < 0 || page >= 8)
1881 segment = FONT_BUF + 0x4000*page;
1885 #ifdef VGA_ALT_SEQACCESS
1886 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1888 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1889 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1890 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1891 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1896 set_font_mode(adp, buf);
1897 if (fontsize == 32) {
1898 bcopy_toio(data, segment + ch*32, fontsize*count);
1900 for (c = ch; count > 0; ++c, --count) {
1901 bcopy_toio(data, segment + c*32, fontsize);
1905 set_normal_mode(adp, buf);
1907 #ifdef VGA_ALT_SEQACCESS
1908 if (adp->va_type == KD_VGA) {
1910 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1911 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1912 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1918 #else /* VGA_NO_FONT_LOADING */
1920 #endif /* VGA_NO_FONT_LOADING */
1925 * Activate the requested font page.
1926 * NOTE: it appears that some recent video adapters do not support
1927 * the font page other than 0... XXX
1932 vga_show_font(video_adapter_t *adp, int page)
1934 #ifndef VGA_NO_FONT_LOADING
1935 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1937 prologue(adp, V_ADP_FONT, ENODEV);
1938 if (page < 0 || page >= 8)
1942 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1946 #else /* VGA_NO_FONT_LOADING */
1948 #endif /* VGA_NO_FONT_LOADING */
1953 * Read DAC values. The values have expressed in 8 bits.
1958 vga_save_palette(video_adapter_t *adp, u_char *palette)
1962 prologue(adp, V_ADP_PALETTE, ENODEV);
1965 * We store 8 bit values in the palette buffer, while the standard
1966 * VGA has 6 bit DAC .
1968 outb(PALRADR, 0x00);
1969 for (i = 0; i < 256*3; ++i)
1970 palette[i] = inb(PALDATA) << 2;
1971 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1976 vga_save_palette2(video_adapter_t *adp, int base, int count,
1977 u_char *r, u_char *g, u_char *b)
1981 prologue(adp, V_ADP_PALETTE, ENODEV);
1983 outb(PALRADR, base);
1984 for (i = 0; i < count; ++i) {
1985 r[i] = inb(PALDATA) << 2;
1986 g[i] = inb(PALDATA) << 2;
1987 b[i] = inb(PALDATA) << 2;
1989 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2000 vga_load_palette(video_adapter_t *adp, const u_char *palette)
2004 prologue(adp, V_ADP_PALETTE, ENODEV);
2006 outb(PIXMASK, 0xff); /* no pixelmask */
2007 outb(PALWADR, 0x00);
2008 for (i = 0; i < 256*3; ++i)
2009 outb(PALDATA, palette[i] >> 2);
2010 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2011 outb(ATC, 0x20); /* enable palette */
2016 vga_load_palette2(video_adapter_t *adp, int base, int count,
2017 u_char *r, u_char *g, u_char *b)
2021 prologue(adp, V_ADP_PALETTE, ENODEV);
2023 outb(PIXMASK, 0xff); /* no pixelmask */
2024 outb(PALWADR, base);
2025 for (i = 0; i < count; ++i) {
2026 outb(PALDATA, r[i] >> 2);
2027 outb(PALDATA, g[i] >> 2);
2028 outb(PALDATA, b[i] >> 2);
2030 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2031 outb(ATC, 0x20); /* enable palette */
2037 * Change the border color.
2042 vga_set_border(video_adapter_t *adp, int color)
2044 prologue(adp, V_ADP_BORDER, ENODEV);
2046 switch (adp->va_type) {
2049 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
2050 outb(ATC, 0x31); outb(ATC, color & 0xff);
2053 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
2065 * Read video register values.
2066 * NOTE: this function only reads the standard EGA/VGA registers.
2067 * any extra/extended registers of SVGA adapters are not saved.
2072 vga_save_state(video_adapter_t *adp, void *p, size_t size)
2080 /* return the required buffer size */
2081 prologue(adp, V_ADP_STATESAVE, 0);
2082 return sizeof(adp_state_t);
2084 prologue(adp, V_ADP_STATESAVE, ENODEV);
2085 if (size < sizeof(adp_state_t))
2089 ((adp_state_t *)p)->sig = V_STATE_SIG;
2090 buf = ((adp_state_t *)p)->regs;
2091 bzero(buf, V_MODE_PARAM_SIZE);
2092 crtc_addr = adp->va_crtc_addr;
2096 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2097 for (i = 0, j = 5; i < 4; i++) {
2099 buf[j++] = inb(TSREG);
2101 buf[9] = inb(MISC + 10); /* dot-clock */
2102 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2104 for (i = 0, j = 10; i < 25; i++) { /* crtc */
2106 buf[j++] = inb(crtc_addr + 1);
2108 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
2109 inb(crtc_addr + 6); /* reset flip-flop */
2111 buf[j++] = inb(ATC + 1);
2113 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
2115 buf[j++] = inb(GDCREG);
2117 inb(crtc_addr + 6); /* reset flip-flop */
2118 outb(ATC, 0x20); /* enable palette */
2123 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
2124 if (info.vi_flags & V_INFO_GRAPHICS) {
2125 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
2126 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
2128 buf[0] = info.vi_width; /* COLS */
2129 buf[1] = info.vi_height - 1; /* ROWS */
2131 buf[2] = info.vi_cheight; /* POINTS */
2133 /* XXX: shouldn't be happening... */
2134 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
2135 adp->va_unit, adp->va_name);
2138 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
2139 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
2140 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
2141 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
2142 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
2150 * Set video registers at once.
2151 * NOTE: this function only updates the standard EGA/VGA registers.
2152 * any extra/extended registers of SVGA adapters are not changed.
2157 vga_load_state(video_adapter_t *adp, void *p)
2163 prologue(adp, V_ADP_STATELOAD, ENODEV);
2164 if (((adp_state_t *)p)->sig != V_STATE_SIG)
2167 buf = ((adp_state_t *)p)->regs;
2168 crtc_addr = adp->va_crtc_addr;
2171 dump_buffer(buf, V_MODE_PARAM_SIZE);
2176 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2177 for (i = 0; i < 4; ++i) { /* program sequencer */
2179 outb(TSREG, buf[i + 5]);
2181 outb(MISC, buf[9]); /* set dot-clock */
2182 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2183 outb(crtc_addr, 0x11);
2184 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
2185 for (i = 0; i < 25; ++i) { /* program crtc */
2187 outb(crtc_addr + 1, buf[i + 10]);
2189 inb(crtc_addr+6); /* reset flip-flop */
2190 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
2192 outb(ATC, buf[i + 35]);
2194 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
2196 outb(GDCREG, buf[i + 55]);
2198 inb(crtc_addr + 6); /* reset flip-flop */
2199 outb(ATC, 0x20); /* enable palette */
2201 #if notyet /* a temporary workaround for kernel panic, XXX */
2203 if (adp->va_unit == V_ADP_PRIMARY) {
2204 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
2205 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
2206 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
2208 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
2209 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
2212 #endif /* VGA_NO_BIOS */
2221 * Change the origin (window mapping) of the banked frame buffer.
2224 vga_set_origin(video_adapter_t *adp, off_t offset)
2227 * The standard video modes do not require window mapping;
2228 * always return error.
2235 * Read the position of the hardware text cursor.
2240 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
2247 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2251 outb(adp->va_crtc_addr, 14);
2252 off = inb(adp->va_crtc_addr + 1);
2253 outb(adp->va_crtc_addr, 15);
2254 off = (off << 8) | inb(adp->va_crtc_addr + 1);
2257 *row = off / adp->va_info.vi_width;
2258 *col = off % adp->va_info.vi_width;
2265 * Move the hardware text cursor. If col and row are both -1,
2266 * the cursor won't be shown.
2271 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
2278 if ((col == -1) && (row == -1)) {
2281 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2283 off = row*adp->va_info.vi_width + col;
2287 outb(adp->va_crtc_addr, 14);
2288 outb(adp->va_crtc_addr + 1, off >> 8);
2289 outb(adp->va_crtc_addr, 15);
2290 outb(adp->va_crtc_addr + 1, off & 0x00ff);
2297 * set_hw_cursor_shape():
2298 * Change the shape of the hardware text cursor. If the height is
2299 * zero or negative, the cursor won't be shown.
2304 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
2305 int celsize, int blink)
2311 switch (adp->va_type) {
2318 /* make the cursor invisible */
2319 outb(adp->va_crtc_addr, 10);
2320 outb(adp->va_crtc_addr + 1, 32);
2321 outb(adp->va_crtc_addr, 11);
2322 outb(adp->va_crtc_addr + 1, 0);
2324 outb(adp->va_crtc_addr, 10);
2325 outb(adp->va_crtc_addr + 1, celsize - base - height);
2326 outb(adp->va_crtc_addr, 11);
2327 outb(adp->va_crtc_addr + 1, celsize - base - 1);
2332 /* make the cursor invisible */
2333 outb(adp->va_crtc_addr, 10);
2334 outb(adp->va_crtc_addr + 1, celsize);
2335 outb(adp->va_crtc_addr, 11);
2336 outb(adp->va_crtc_addr + 1, 0);
2338 outb(adp->va_crtc_addr, 10);
2339 outb(adp->va_crtc_addr + 1, celsize - base - height);
2340 outb(adp->va_crtc_addr, 11);
2341 outb(adp->va_crtc_addr + 1, celsize - base);
2352 * Put the display in power save/power off mode.
2357 vga_blank_display(video_adapter_t *adp, int mode)
2362 switch (adp->va_type) {
2365 case V_DISPLAY_SUSPEND:
2366 case V_DISPLAY_STAND_BY:
2370 outb(TSREG, val | 0x20);
2371 outb(adp->va_crtc_addr, 0x17);
2372 val = inb(adp->va_crtc_addr + 1);
2373 outb(adp->va_crtc_addr + 1, val & ~0x80);
2375 case V_DISPLAY_BLANK:
2379 outb(TSREG, val | 0x20);
2385 outb(TSREG, val & 0xDF);
2386 outb(adp->va_crtc_addr, 0x17);
2387 val = inb(adp->va_crtc_addr + 1);
2388 outb(adp->va_crtc_addr + 1, val | 0x80);
2394 /* no support yet */
2400 case V_DISPLAY_SUSPEND:
2401 case V_DISPLAY_STAND_BY:
2402 case V_DISPLAY_BLANK:
2403 outb(adp->va_crtc_addr + 4, 0x25);
2406 outb(adp->va_crtc_addr + 4, 0x2d);
2414 case V_DISPLAY_SUSPEND:
2415 case V_DISPLAY_STAND_BY:
2416 case V_DISPLAY_BLANK:
2417 outb(adp->va_crtc_addr + 4, 0x21);
2420 outb(adp->va_crtc_addr + 4, 0x29);
2434 * Mmap frame buffer.
2439 vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
2441 if (adp->va_info.vi_flags & V_INFO_LINEAR)
2445 printf("vga_mmap_buf(): window:0x%x, offset:0x%x\n",
2446 adp->va_info.vi_window, offset);
2449 /* XXX: is this correct? */
2450 if (offset > adp->va_window_size - PAGE_SIZE)
2454 return i386_btop(adp->va_info.vi_window + offset);
2458 #ifndef VGA_NO_MODE_CHANGE
2461 planar_fill(video_adapter_t *adp, int val)
2464 int at; /* position in the frame buffer */
2467 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2468 outw(GDCIDX, 0x0003); /* data rotate/function select */
2469 outw(GDCIDX, 0x0f01); /* set/reset enable */
2470 outw(GDCIDX, 0xff08); /* bit mask */
2471 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2473 length = adp->va_line_width*adp->va_info.vi_height;
2474 while (length > 0) {
2475 l = imin(length, adp->va_window_size);
2476 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2477 bzero_io(adp->va_window, l);
2481 outw(GDCIDX, 0x0000); /* set/reset */
2482 outw(GDCIDX, 0x0001); /* set/reset enable */
2486 packed_fill(video_adapter_t *adp, int val)
2489 int at; /* position in the frame buffer */
2493 length = adp->va_line_width*adp->va_info.vi_height;
2494 while (length > 0) {
2495 l = imin(length, adp->va_window_size);
2496 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2497 fill_io(val, adp->va_window, l);
2504 direct_fill(video_adapter_t *adp, int val)
2507 int at; /* position in the frame buffer */
2511 length = adp->va_line_width*adp->va_info.vi_height;
2512 while (length > 0) {
2513 l = imin(length, adp->va_window_size);
2514 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2515 switch (adp->va_info.vi_pixel_size) {
2516 case sizeof(u_int16_t):
2517 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
2522 case sizeof(u_int32_t):
2523 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
2532 vga_clear(video_adapter_t *adp)
2534 switch (adp->va_info.vi_mem_model) {
2535 case V_INFO_MM_TEXT:
2536 /* do nothing? XXX */
2538 case V_INFO_MM_PLANAR:
2539 planar_fill(adp, 0);
2541 case V_INFO_MM_PACKED:
2542 packed_fill(adp, 0);
2544 case V_INFO_MM_DIRECT:
2545 direct_fill(adp, 0);
2553 planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2558 int offset; /* offset within window */
2562 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2563 outw(GDCIDX, 0x0003); /* data rotate/function select */
2564 outw(GDCIDX, 0x0f01); /* set/reset enable */
2565 outw(GDCIDX, 0xff08); /* bit mask */
2566 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2568 banksize = adp->va_window_size;
2571 pos = adp->va_line_width*y + x/8;
2572 if (bank != pos/banksize) {
2573 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2574 bank = pos/banksize;
2576 offset = pos%banksize;
2577 bx = (x + cx)/8 - x/8;
2579 outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
2580 writeb(adp->va_window + offset, 0);
2583 if (offset >= banksize) {
2585 ++bank; /* next bank */
2586 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2588 outw(GDCIDX, 0xff08); /* bit mask */
2591 l = imin(bx, banksize);
2592 bzero_io(adp->va_window + offset, l);
2595 if (offset >= banksize) {
2597 ++bank; /* next bank */
2598 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2602 outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
2603 writeb(adp->va_window + offset, 0);
2605 if (offset >= banksize) {
2607 ++bank; /* next bank */
2608 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2610 outw(GDCIDX, 0xff08); /* bit mask */
2616 outw(GDCIDX, 0xff08); /* bit mask */
2617 outw(GDCIDX, 0x0000); /* set/reset */
2618 outw(GDCIDX, 0x0001); /* set/reset enable */
2622 packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2627 int offset; /* offset within window */
2630 banksize = adp->va_window_size;
2632 cx *= adp->va_info.vi_pixel_size;
2634 pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
2635 if (bank != pos/banksize) {
2636 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2637 bank = pos/banksize;
2639 offset = pos%banksize;
2640 end = imin(offset + cx, banksize);
2641 fill_io(val, adp->va_window + offset,
2642 (end - offset)/adp->va_info.vi_pixel_size);
2643 /* the line may cross the window boundary */
2644 if (offset + cx > banksize) {
2645 ++bank; /* next bank */
2646 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2647 end = offset + cx - banksize;
2648 fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
2656 direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2661 int offset; /* offset within window */
2665 * XXX: the function assumes that banksize is a muliple of
2666 * sizeof(u_int16_t).
2668 banksize = adp->va_window_size;
2670 cx *= sizeof(u_int16_t);
2672 pos = adp->va_line_width*y + x*sizeof(u_int16_t);
2673 if (bank != pos/banksize) {
2674 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2675 bank = pos/banksize;
2677 offset = pos%banksize;
2678 end = imin(offset + cx, banksize);
2679 fillw_io(val, adp->va_window + offset,
2680 (end - offset)/sizeof(u_int16_t));
2681 /* the line may cross the window boundary */
2682 if (offset + cx > banksize) {
2683 ++bank; /* next bank */
2684 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2685 end = offset + cx - banksize;
2686 fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
2694 direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2699 int offset; /* offset within window */
2705 b[0] = val & 0x0000ff;
2706 b[1] = (val >> 8) & 0x0000ff;
2707 b[2] = (val >> 16) & 0x0000ff;
2708 banksize = adp->va_window_size;
2712 pos = adp->va_line_width*y + x*3;
2713 if (bank != pos/banksize) {
2714 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2715 bank = pos/banksize;
2717 offset = pos%banksize;
2718 end = imin(offset + cx, banksize);
2719 for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
2720 writeb(adp->va_window + j, b[i]);
2722 /* the line may cross the window boundary */
2723 if (offset + cx >= banksize) {
2724 ++bank; /* next bank */
2725 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2727 end = offset + cx - banksize;
2728 for (; j < end; i = (++i)%3, ++j) {
2729 writeb(adp->va_window + j, b[i]);
2738 direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2743 int offset; /* offset within window */
2747 * XXX: the function assumes that banksize is a muliple of
2748 * sizeof(u_int32_t).
2750 banksize = adp->va_window_size;
2752 cx *= sizeof(u_int32_t);
2754 pos = adp->va_line_width*y + x*sizeof(u_int32_t);
2755 if (bank != pos/banksize) {
2756 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2757 bank = pos/banksize;
2759 offset = pos%banksize;
2760 end = imin(offset + cx, banksize);
2761 filll_io(val, adp->va_window + offset,
2762 (end - offset)/sizeof(u_int32_t));
2763 /* the line may cross the window boundary */
2764 if (offset + cx > banksize) {
2765 ++bank; /* next bank */
2766 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2767 end = offset + cx - banksize;
2768 filll_io(val, adp->va_window, end/sizeof(u_int32_t));
2776 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2778 switch (adp->va_info.vi_mem_model) {
2779 case V_INFO_MM_TEXT:
2780 /* do nothing? XXX */
2782 case V_INFO_MM_PLANAR:
2783 planar_fill_rect(adp, val, x, y, cx, cy);
2785 case V_INFO_MM_PACKED:
2786 packed_fill_rect(adp, val, x, y, cx, cy);
2788 case V_INFO_MM_DIRECT:
2789 switch (adp->va_info.vi_pixel_size) {
2790 case sizeof(u_int16_t):
2791 direct_fill_rect16(adp, val, x, y, cx, cy);
2794 direct_fill_rect24(adp, val, x, y, cx, cy);
2796 case sizeof(u_int32_t):
2797 direct_fill_rect32(adp, val, x, y, cx, cy);
2806 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2813 vga_bitblt(video_adapter_t *adp,...)
2819 #endif /* !VGA_NO_MODE_CHANGE */
2822 get_palette(video_adapter_t *adp, int base, int count,
2823 u_char *red, u_char *green, u_char *blue, u_char *trans)
2829 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2833 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2836 if (vga_save_palette2(adp, base, count, r, g, b)) {
2840 copyout(r, red, count);
2841 copyout(g, green, count);
2842 copyout(b, blue, count);
2843 if (trans != NULL) {
2845 copyout(r, trans, count);
2853 set_palette(video_adapter_t *adp, int base, int count,
2854 u_char *red, u_char *green, u_char *blue, u_char *trans)
2861 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2865 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2868 err = copyin(red, r, count);
2870 err = copyin(green, g, count);
2872 err = copyin(blue, b, count);
2874 err = vga_load_palette2(adp, base, count, r, g, b);
2877 return (err ? ENODEV : 0);
2881 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
2884 case FBIO_GETWINORG: /* get frame buffer window origin */
2888 case FBIO_SETWINORG: /* set frame buffer window origin */
2891 case FBIO_SETDISPSTART: /* set display start address */
2892 return (set_display_start(adp,
2893 ((video_display_start_t *)arg)->x,
2894 ((video_display_start_t *)arg)->y)
2897 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
2898 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
2900 case FBIO_GETPALETTE: /* get color palette */
2901 return get_palette(adp, ((video_color_palette_t *)arg)->index,
2902 ((video_color_palette_t *)arg)->count,
2903 ((video_color_palette_t *)arg)->red,
2904 ((video_color_palette_t *)arg)->green,
2905 ((video_color_palette_t *)arg)->blue,
2906 ((video_color_palette_t *)arg)->transparent);
2908 case FBIO_SETPALETTE: /* set color palette */
2909 return set_palette(adp, ((video_color_palette_t *)arg)->index,
2910 ((video_color_palette_t *)arg)->count,
2911 ((video_color_palette_t *)arg)->red,
2912 ((video_color_palette_t *)arg)->green,
2913 ((video_color_palette_t *)arg)->blue,
2914 ((video_color_palette_t *)arg)->transparent);
2916 case FBIOGTYPE: /* get frame buffer type info. */
2917 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
2918 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
2919 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
2920 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
2921 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
2922 ((struct fbtype *)arg)->fb_cmsize = 0;
2924 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
2925 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
2928 case FBIOGETCMAP: /* get color palette */
2929 return get_palette(adp, ((struct fbcmap *)arg)->index,
2930 ((struct fbcmap *)arg)->count,
2931 ((struct fbcmap *)arg)->red,
2932 ((struct fbcmap *)arg)->green,
2933 ((struct fbcmap *)arg)->blue, NULL);
2935 case FBIOPUTCMAP: /* set color palette */
2936 return set_palette(adp, ((struct fbcmap *)arg)->index,
2937 ((struct fbcmap *)arg)->count,
2938 ((struct fbcmap *)arg)->red,
2939 ((struct fbcmap *)arg)->green,
2940 ((struct fbcmap *)arg)->blue, NULL);
2943 return fb_commonioctl(adp, cmd, arg);
2948 dump_buffer(u_char *buf, size_t len)
2952 for(i = 0; i < len;) {
2953 printf("%02x ", buf[i]);
2954 if ((++i % 16) == 0)
2961 * Print some information about the video adapter and video modes,
2962 * with requested level of details.
2967 vga_diag(video_adapter_t *adp, int level)
2980 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
2981 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
2982 printf("vga: CRTC:0x%x, video option:0x%02x, ",
2983 readw(BIOS_PADDRTOVADDR(0x463)),
2984 readb(BIOS_PADDRTOVADDR(0x487)));
2985 printf("rows:%d, cols:%d, font height:%d\n",
2986 readb(BIOS_PADDRTOVADDR(0x44a)),
2987 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
2988 readb(BIOS_PADDRTOVADDR(0x485)));
2989 #endif /* VGA_NO_BIOS */
2990 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
2991 printf("vga: param table EGA/VGA:%p", video_mode_ptr);
2992 printf(", CGA/MDA:%p\n", video_mode_ptr2);
2993 printf("vga: rows_offset:%d\n", rows_offset);
2995 #endif /* FB_DEBUG > 1 */
2997 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
3000 if (adp->va_flags & V_ADP_MODECHANGE) {
3001 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
3002 if (bios_vmode[i].vi_mode == NA)
3004 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
3006 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
3009 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
3010 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
3012 #endif /* FB_DEBUG > 1 */
3014 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
3016 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
3017 if (video_mode_ptr == NULL)
3018 printf("vga%d: %s: WARNING: video mode switching is not "
3019 "fully supported on this adapter\n",
3020 adp->va_unit, adp->va_name);
3025 if (adp->va_type == KD_VGA) {
3026 printf("VGA parameters upon power-up\n");
3027 dump_buffer(adpstate.regs, sizeof(adpstate.regs));
3028 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
3029 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
3032 mp = get_mode_param(adp->va_initial_mode);
3033 if (mp == NULL) /* this shouldn't be happening */
3035 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
3036 dump_buffer(mp, V_MODE_PARAM_SIZE);