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 1.15 2005/10/30 23:00:56 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 **, u_char *, int);
432 static void clear_mode_map(video_adapter_t *, u_char **, int, int);
433 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
434 static int map_mode_num(int);
436 static int map_gen_mode_num(int, int, int);
437 static int map_bios_mode_num(int, int, int);
438 static u_char *get_mode_param(int);
440 static void fill_adapter_param(int, video_adapter_t *);
442 static int verify_adapter(video_adapter_t *);
443 static void update_adapter_info(video_adapter_t *, video_info_t *);
444 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
445 #define COMP_IDENTICAL 0
446 #define COMP_SIMILAR 1
447 #define COMP_DIFFERENT 2
448 static int comp_adpregs(u_char *, u_char *);
450 static int probe_adapters(void);
451 static int set_line_length(video_adapter_t *, int);
452 static int set_display_start(video_adapter_t *, int, int);
454 #ifndef VGA_NO_MODE_CHANGE
456 static void set_width90(adp_state_t *);
458 #endif /* !VGA_NO_MODE_CHANGE */
460 #ifndef VGA_NO_FONT_LOADING
461 #define PARAM_BUFSIZE 6
462 static void set_font_mode(video_adapter_t *, u_char *);
463 static void set_normal_mode(video_adapter_t *, u_char *);
466 #ifndef VGA_NO_MODE_CHANGE
467 static void filll_io(int, vm_offset_t, size_t);
468 static void planar_fill(video_adapter_t *, int);
469 static void packed_fill(video_adapter_t *, int);
470 static void direct_fill(video_adapter_t *, int);
472 static void planar_fill_rect(video_adapter_t *, int, int, int, int, int);
473 static void packed_fill_rect(video_adapter_t *, int, int, int, int, int);
474 static void direct_fill_rect16(video_adapter_t *, int, int, int, int, int);
475 static void direct_fill_rect24(video_adapter_t *, int, int, int, int, int);
476 static void direct_fill_rect32(video_adapter_t *, int, int, int, int, int);
478 #endif /* !VGA_NO_MODE_CHANGE */
480 static void dump_buffer(u_char *, size_t);
482 #define ISMAPPED(pa, width) \
483 (((pa) <= (u_long)0x1000 - (width)) \
484 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
486 #define prologue(adp, flag, err) \
487 if (!vga_init_done || !((adp)->va_flags & (flag))) \
490 /* a backdoor for the console driver */
492 vga_configure(int flags)
497 for (i = 0; i < biosadapters; ++i) {
498 if (!probe_done(&biosadapter[i]))
500 biosadapter[i].va_flags |= V_ADP_INITIALIZED;
501 if (!config_done(&biosadapter[i])) {
502 if (vid_register(&biosadapter[i]) < 0)
504 biosadapter[i].va_flags |= V_ADP_REGISTERED;
507 if (vga_sub_configure != NULL)
508 (*vga_sub_configure)(flags);
513 /* local subroutines */
515 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
516 /* construct the mode parameter map */
518 map_mode_table(u_char *map[], u_char *table, int max)
522 for(i = 0; i < max; ++i)
523 map[i] = table + i*V_MODE_PARAM_SIZE;
524 for(; i < V_MODE_MAP_SIZE; ++i)
527 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
530 clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
536 * NOTE: we don't touch `bios_vmode[]' because it is shared
539 for(i = 0; i < max; ++i) {
540 if (vga_get_info(adp, i, &info))
542 if ((info.vi_flags & V_INFO_COLOR) != color)
547 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
548 /* map the non-standard video mode to a known mode number */
550 map_mode_num(int mode)
556 { M_ENH_B80x43, M_ENH_B80x25 },
557 { M_ENH_C80x43, M_ENH_C80x25 },
558 { M_VGA_M80x30, M_VGA_M80x25 },
559 { M_VGA_C80x30, M_VGA_C80x25 },
560 { M_VGA_M80x50, M_VGA_M80x25 },
561 { M_VGA_C80x50, M_VGA_C80x25 },
562 { M_VGA_M80x60, M_VGA_M80x25 },
563 { M_VGA_C80x60, M_VGA_C80x25 },
565 { M_VGA_M90x25, M_VGA_M80x25 },
566 { M_VGA_C90x25, M_VGA_C80x25 },
567 { M_VGA_M90x30, M_VGA_M80x25 },
568 { M_VGA_C90x30, M_VGA_C80x25 },
569 { M_VGA_M90x43, M_ENH_B80x25 },
570 { M_VGA_C90x43, M_ENH_C80x25 },
571 { M_VGA_M90x50, M_VGA_M80x25 },
572 { M_VGA_C90x50, M_VGA_C80x25 },
573 { M_VGA_M90x60, M_VGA_M80x25 },
574 { M_VGA_C90x60, M_VGA_C80x25 },
576 { M_VGA_MODEX, M_VGA_CG320 },
580 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
581 if (mode_map[i].from == mode)
582 return mode_map[i].to;
586 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
588 /* map a generic video mode to a known mode number */
590 map_gen_mode_num(int type, int color, int mode)
597 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, },
598 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, },
599 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, },
600 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, },
604 if (mode == M_TEXT_80x25) {
618 return M_EGAMONO80x25;
626 return M_EGAMONO80x25; /* XXX: this name is confusing */
633 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
634 if (mode_map[i].from == mode)
635 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono);
640 /* turn the BIOS video number into our video mode number */
642 map_bios_mode_num(int type, int color, int bios_mode)
644 static int cga_modes[7] = {
645 M_B40x25, M_C40x25, /* 0, 1 */
646 M_B80x25, M_C80x25, /* 2, 3 */
650 static int ega_modes[17] = {
651 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */
652 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */
655 M_EGAMONO80x25, /* 7 */
659 M_ENHMONOAPA2, /* XXX: video momery > 64K */
660 M_ENH_CG640, /* XXX: video momery > 64K */
662 static int vga_modes[20] = {
663 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
664 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
667 M_VGA_M80x25, /* 7 */
673 M_BG640x480, M_CG640x480,
680 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0]))
681 return vga_modes[bios_mode];
689 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0]))
690 return ega_modes[bios_mode];
694 return M_EGAMONO80x25;
698 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0]))
699 return cga_modes[bios_mode];
706 return M_EGAMONO80x25; /* XXX: this name is confusing */
714 /* look up a parameter table entry */
716 get_mode_param(int mode)
718 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
719 if (mode >= V_MODE_MAP_SIZE)
720 mode = map_mode_num(mode);
722 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
723 return mode_map[mode];
730 fill_adapter_param(int code, video_adapter_t *adp)
736 { DCC_MONO, DCC_EGA40 /* CGA monitor */ },
737 { DCC_MONO, DCC_EGA80 /* CGA monitor */ },
738 { DCC_MONO, DCC_EGA80 },
739 { DCC_MONO, DCC_EGA80 },
740 { DCC_CGA40, DCC_EGAMONO },
741 { DCC_CGA80, DCC_EGAMONO },
742 { DCC_EGA40 /* CGA monitor */, DCC_MONO},
743 { DCC_EGA80 /* CGA monitor */, DCC_MONO},
744 { DCC_EGA80, DCC_MONO },
745 { DCC_EGA80, DCC_MONO },
746 { DCC_EGAMONO, DCC_CGA40 },
747 { DCC_EGAMONO, DCC_CGA80 },
750 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) {
751 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
752 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
754 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
755 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
758 #endif /* VGA_NO_BIOS */
761 verify_adapter(video_adapter_t *adp)
765 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
769 buf = BIOS_PADDRTOVADDR(adp->va_window);
772 if (readw(buf) != 0xA55A)
776 switch (adp->va_type) {
779 outb(adp->va_crtc_addr, 7);
780 if (inb(adp->va_crtc_addr) == 7) {
781 adp->va_type = KD_VGA;
782 adp->va_name = "vga";
783 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
785 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
786 /* the color adapter may be in the 40x25 mode... XXX */
788 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
789 /* get the BIOS video mode pointer */
790 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
791 p = BIOS_SADDRTOLADDR(p);
792 if (ISMAPPED(p, sizeof(u_int32_t))) {
793 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
794 p = BIOS_SADDRTOLADDR(p);
795 if (ISMAPPED(p, V_MODE_PARAM_SIZE))
796 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
802 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
803 /* may be in the 40x25 mode... XXX */
804 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
805 /* get the BIOS video mode pointer */
806 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
807 p = BIOS_SADDRTOLADDR(p);
808 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
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(0x1d*4);
816 p = BIOS_SADDRTOLADDR(p);
817 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
826 update_adapter_info(video_adapter_t *adp, video_info_t *info)
828 adp->va_flags &= ~V_ADP_COLOR;
830 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
832 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
833 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
834 adp->va_window_size = info->vi_window_size;
835 adp->va_window_gran = info->vi_window_gran;
836 adp->va_window_orig = 0;
838 adp->va_buffer = info->vi_buffer;
839 adp->va_buffer_size = info->vi_buffer_size;
840 if (info->vi_mem_model == V_INFO_MM_VGAX) {
841 adp->va_line_width = info->vi_width/2;
842 } else if (info->vi_flags & V_INFO_GRAPHICS) {
843 switch (info->vi_depth/info->vi_planes) {
845 adp->va_line_width = info->vi_width/8;
848 adp->va_line_width = info->vi_width/4;
851 adp->va_line_width = info->vi_width/2;
854 default: /* shouldn't happen */
855 adp->va_line_width = info->vi_width;
859 adp->va_line_width = info->vi_width;
861 adp->va_disp_start.x = 0;
862 adp->va_disp_start.y = 0;
863 bcopy(info, &adp->va_info, sizeof(adp->va_info));
866 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
867 /* compare two parameter table entries */
869 comp_adpregs(u_char *buf1, u_char *buf2)
873 } params[V_MODE_PARAM_SIZE] = {
874 {0xff}, {0x00}, {0xff}, /* COLS}, ROWS}, POINTS */
875 {0x00}, {0x00}, /* page length */
876 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */
877 {0xf3}, /* misc register */
878 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */
879 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
880 {0x00}, {0x00}, {0x00}, {0x00}, {0x00},
881 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
882 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
883 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */
884 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
885 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
886 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
887 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */
888 {0xff}, {0xff}, {0xff}, {0xff},
890 int identical = TRUE;
893 if ((buf1 == NULL) || (buf2 == NULL))
894 return COMP_DIFFERENT;
896 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
897 if (params[i].mask == 0) /* don't care */
899 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
900 return COMP_DIFFERENT;
901 if (buf1[i] != buf2[i])
904 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
906 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
908 /* probe video adapters and return the number of detected adapters */
912 video_adapter_t *adp;
914 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
919 /* do this test only once */
922 vga_init_done = TRUE;
925 * Locate display adapters.
926 * The AT architecture supports upto two adapters. `syscons' allows
927 * the following combinations of adapters:
929 * 2) MDA + EGA/VGA color
930 * 3) CGA + EGA/VGA mono
931 * Note that `syscons' doesn't bother with MCGA as it is only
932 * avaiable for low end PS/2 models which has 80286 or earlier CPUs,
933 * thus, they are not running FreeBSD!
934 * When there are two adapaters in the system, one becomes `primary'
935 * and the other `secondary'. The EGA adapter has a set of DIP
936 * switches on board for this information and the EGA BIOS copies
937 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88).
938 * The VGA BIOS has more sophisticated mechanism and has this
939 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains
940 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
944 * Check rtc and BIOS data area.
945 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
946 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are
947 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets
948 * these bits in BIOSDATA_EQUIPMENT according to the monitor
952 if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) {
953 /* EGA/VGA BIOS is present */
954 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
957 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */
959 /* EGA/VGA: shouldn't be happening */
960 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
965 /* FIXME: switch to the 80x25 mode? XXX */
966 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
967 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
971 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
972 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
976 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
977 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
982 /* assume EGA/VGA? XXX */
983 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
984 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
985 #endif /* VGA_NO_BIOS */
988 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
990 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
991 biosadapter[V_ADP_SECONDARY].va_mode =
992 biosadapter[V_ADP_SECONDARY].va_initial_mode =
993 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type,
994 biosadapter[V_ADP_SECONDARY].va_flags
996 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
998 biosadapter[V_ADP_SECONDARY].va_type = -1;
1000 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
1002 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
1004 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode =
1005 readb(BIOS_PADDRTOVADDR(0x449));
1007 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */
1009 biosadapter[V_ADP_PRIMARY].va_mode =
1010 biosadapter[V_ADP_PRIMARY].va_initial_mode =
1011 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type,
1012 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
1013 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
1015 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
1016 biosadapter[V_ADP_SECONDARY].va_type = -1;
1018 if (biosadapters == 0)
1019 return biosadapters;
1020 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
1021 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
1023 #if 0 /* we don't need these... */
1024 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
1025 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
1030 * We cannot have two video adapter of the same type; there must be
1031 * only one of color or mono adapter, or one each of them.
1033 if (biosadapters > 1) {
1034 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
1036 /* we have two mono or color adapters!! */
1037 return (biosadapters = 0);
1042 * Ensure a zero start address. This is mainly to recover after
1043 * switching from pcvt using userconfig(). The registers are w/o
1044 * for old hardware so it's too hard to relocate the active screen
1046 * This must be done before vga_save_state() for VGA.
1048 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
1049 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1050 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
1051 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1053 /* the video mode parameter table in EGA/VGA BIOS */
1054 /* NOTE: there can be only one EGA/VGA, wheather color or mono,
1055 * recognized by the video BIOS.
1057 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
1058 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
1059 adp = &biosadapter[V_ADP_PRIMARY];
1060 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
1061 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
1062 adp = &biosadapter[V_ADP_SECONDARY];
1066 bzero(mode_map, sizeof(mode_map));
1068 if (adp->va_type == KD_VGA) {
1069 vga_save_state(adp, &adpstate, sizeof(adpstate));
1070 for(i = 0; i < 16; i++)
1071 adp->va_palette_regs[i] = adpstate.regs[35 + i];
1072 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1073 mode_map[adp->va_initial_mode] = adpstate.regs;
1075 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1076 if (video_mode_ptr == NULL) {
1077 mode_map[adp->va_initial_mode] = adpstate.regs;
1080 /* discard the table if we are not familiar with it... */
1081 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
1082 mp = get_mode_param(adp->va_initial_mode);
1084 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
1085 switch (comp_adpregs(adpstate.regs, mp)) {
1086 case COMP_IDENTICAL:
1088 * OK, this parameter table looks reasonably familiar
1092 * This is a kludge for Toshiba DynaBook SS433
1093 * whose BIOS video mode table entry has the actual #
1094 * of rows at the offset 1; BIOSes from other
1095 * manufacturers store the # of rows - 1 there. XXX
1097 rows_offset = adpstate.regs[1] + 1 - mp[1];
1102 * Not exactly the same, but similar enough to be
1103 * trusted. However, use the saved register values
1104 * for the initial mode and other modes which are
1105 * based on the initial mode.
1107 mode_map[adp->va_initial_mode] = adpstate.regs;
1108 rows_offset = adpstate.regs[1] + 1 - mp[1];
1109 adpstate.regs[1] -= rows_offset - 1;
1112 case COMP_DIFFERENT:
1115 * Don't use the paramter table in BIOS. It doesn't
1116 * look familiar to us. Video mode switching is allowed
1117 * only if the new mode is the same as or based on
1120 video_mode_ptr = NULL;
1121 bzero(mode_map, sizeof(mode_map));
1122 mode_map[adp->va_initial_mode] = adpstate.regs;
1127 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1129 #ifndef VGA_NO_MODE_CHANGE
1130 adp->va_flags |= V_ADP_MODECHANGE;
1132 #ifndef VGA_NO_FONT_LOADING
1133 adp->va_flags |= V_ADP_FONT;
1135 } else if (adp->va_type == KD_EGA) {
1136 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1138 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1139 if (video_mode_ptr == NULL) {
1142 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
1143 /* XXX how can one validate the EGA table... */
1144 mp = get_mode_param(adp->va_initial_mode);
1146 adp->va_flags |= V_ADP_MODECHANGE;
1147 #ifndef VGA_NO_FONT_LOADING
1148 adp->va_flags |= V_ADP_FONT;
1153 * This is serious. We will not be able to switch video
1156 video_mode_ptr = NULL;
1157 bzero(mode_map, sizeof(mode_map));
1161 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1165 /* remove conflicting modes if we have more than one adapter */
1166 if (biosadapters > 0) {
1167 for (i = 0; i < biosadapters; ++i) {
1168 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
1170 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
1171 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1173 if ((biosadapter[i].va_type == KD_VGA)
1174 || (biosadapter[i].va_type == KD_EGA)) {
1175 biosadapter[i].va_io_base =
1176 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1178 biosadapter[i].va_io_size = 32;
1183 /* buffer address */
1184 vga_get_info(&biosadapter[V_ADP_PRIMARY],
1185 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
1186 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1187 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
1189 if (biosadapters > 1) {
1190 vga_get_info(&biosadapter[V_ADP_SECONDARY],
1191 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
1192 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1193 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
1197 * XXX: we should verify the following values for the primary adapter...
1198 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
1199 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
1200 * ? 0 : V_ADP_COLOR;
1201 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
1202 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
1203 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
1204 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
1207 return biosadapters;
1210 /* set the scan line length in pixel */
1212 set_line_length(video_adapter_t *adp, int pixel)
1215 int ppw; /* pixels per word */
1216 int bpl; /* bytes per line */
1219 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1221 mp = get_mode_param(adp->va_mode);
1225 switch (adp->va_info.vi_mem_model) {
1226 case V_INFO_MM_PLANAR:
1227 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1228 count = (pixel + ppw - 1)/ppw/2;
1229 bpl = ((pixel + ppw - 1)/ppw/2)*4;
1231 case V_INFO_MM_PACKED:
1232 count = (pixel + 7)/8;
1233 bpl = ((pixel + 7)/8)*8;
1235 case V_INFO_MM_TEXT:
1236 count = (pixel + 7)/8; /* columns */
1237 bpl = (pixel + 7)/8; /* columns */
1243 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
1244 count *= 2; /* byte mode */
1245 outb(adp->va_crtc_addr, 0x13);
1246 outb(adp->va_crtc_addr + 1, count);
1247 adp->va_line_width = bpl;
1253 set_display_start(video_adapter_t *adp, int x, int y)
1255 int off; /* byte offset (graphics mode)/word offset (text mode) */
1256 int poff; /* pixel offset */
1257 int roff; /* row offset */
1258 int ppb; /* pixels per byte */
1260 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1262 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
1263 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1264 off = y*adp->va_line_width + x/ppb;
1268 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1277 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
1278 roff = y%adp->va_info.vi_cheight;
1279 /* FIXME: is this correct? XXX */
1287 outb(adp->va_crtc_addr, 0xc); /* high */
1288 outb(adp->va_crtc_addr + 1, off >> 8);
1289 outb(adp->va_crtc_addr, 0xd); /* low */
1290 outb(adp->va_crtc_addr + 1, off & 0xff);
1292 /* horizontal pel pan */
1293 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1294 inb(adp->va_crtc_addr + 6);
1295 outb(ATC, 0x13 | 0x20);
1297 inb(adp->va_crtc_addr + 6);
1301 /* preset raw scan */
1302 outb(adp->va_crtc_addr, 8);
1303 outb(adp->va_crtc_addr + 1, roff);
1305 adp->va_disp_start.x = x;
1306 adp->va_disp_start.y = y;
1310 #ifndef VGA_NO_MODE_CHANGE
1311 #ifdef __i386__ /* XXX */
1313 fill(int val, void *d, size_t size)
1320 #endif /* __i386__ */
1323 filll_io(int val, vm_offset_t d, size_t size)
1325 while (size-- > 0) {
1327 d += sizeof(u_int32_t);
1330 #endif /* !VGA_NO_MODE_CHANGE */
1349 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
1352 if (unit >= biosadapters)
1355 *adpp = &biosadapter[unit];
1361 vga_init(int unit, video_adapter_t *adp, int flags)
1363 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
1366 if (!init_done(adp)) {
1367 /* nothing to do really... */
1368 adp->va_flags |= V_ADP_INITIALIZED;
1371 if (!config_done(adp)) {
1372 if (vid_register(adp) < 0)
1374 adp->va_flags |= V_ADP_REGISTERED;
1376 if (vga_sub_configure != NULL)
1377 (*vga_sub_configure)(0);
1384 * Return the video_info structure of the requested video mode.
1389 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
1396 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
1397 #ifndef VGA_NO_MODE_CHANGE
1398 if (adp->va_flags & V_ADP_MODECHANGE) {
1400 * If the parameter table entry for this mode is not found,
1401 * the mode is not supported...
1403 if (get_mode_param(mode) == NULL)
1406 #endif /* VGA_NO_MODE_CHANGE */
1409 * Even if we don't support video mode switching on this adapter,
1410 * the information on the initial (thus current) video mode
1411 * should be made available.
1413 if (mode != adp->va_initial_mode)
1417 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1418 if (bios_vmode[i].vi_mode == NA)
1420 if (mode == bios_vmode[i].vi_mode) {
1421 *info = bios_vmode[i];
1423 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
1432 * Find a video mode matching the requested parameters.
1433 * Fields filled with 0 are considered "don't care" fields and
1439 vga_query_mode(video_adapter_t *adp, video_info_t *info)
1446 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1447 if (bios_vmode[i].vi_mode == NA)
1450 if ((info->vi_width != 0)
1451 && (info->vi_width != bios_vmode[i].vi_width))
1453 if ((info->vi_height != 0)
1454 && (info->vi_height != bios_vmode[i].vi_height))
1456 if ((info->vi_cwidth != 0)
1457 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
1459 if ((info->vi_cheight != 0)
1460 && (info->vi_cheight != bios_vmode[i].vi_cheight))
1462 if ((info->vi_depth != 0)
1463 && (info->vi_depth != bios_vmode[i].vi_depth))
1465 if ((info->vi_planes != 0)
1466 && (info->vi_planes != bios_vmode[i].vi_planes))
1468 /* XXX: should check pixel format, memory model */
1469 if ((info->vi_flags != 0)
1470 && (info->vi_flags != bios_vmode[i].vi_flags))
1473 /* verify if this mode is supported on this adapter */
1474 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
1483 * Change the video mode.
1488 #ifndef VGA_NO_MODE_CHANGE
1491 set_width90(adp_state_t *params)
1494 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
1495 * and alexv@sui.gda.itesm.mx.
1497 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */
1498 params->regs[10+0x0] = 0x6b;
1499 params->regs[10+0x1] = 0x59;
1500 params->regs[10+0x2] = 0x5a;
1501 params->regs[10+0x3] = 0x8e;
1502 params->regs[10+0x4] = 0x5e;
1503 params->regs[10+0x5] = 0x8a;
1504 params->regs[10+0x13] = 45;
1505 params->regs[35+0x13] = 0;
1507 #endif /* VGA_WIDTH90 */
1508 #endif /* !VGA_NO_MODE_CHANGE */
1511 vga_set_mode(video_adapter_t *adp, int mode)
1513 #ifndef VGA_NO_MODE_CHANGE
1517 prologue(adp, V_ADP_MODECHANGE, ENODEV);
1519 mode = map_gen_mode_num(adp->va_type,
1520 adp->va_flags & V_ADP_COLOR, mode);
1521 if (vga_get_info(adp, mode, &info))
1525 printf("vga_set_mode(): setting mode %d\n", mode);
1528 params.sig = V_STATE_SIG;
1529 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1533 case M_VGA_C90x60: case M_VGA_M90x60:
1534 set_width90(¶ms);
1537 case M_VGA_C80x60: case M_VGA_M80x60:
1538 params.regs[2] = 0x08;
1539 params.regs[19] = 0x47;
1543 case M_VGA_C90x30: case M_VGA_M90x30:
1544 set_width90(¶ms);
1547 case M_VGA_C80x30: case M_VGA_M80x30:
1548 params.regs[19] = 0x4f;
1550 params.regs[9] |= 0xc0;
1551 params.regs[16] = 0x08;
1552 params.regs[17] = 0x3e;
1553 params.regs[26] = 0xea;
1554 params.regs[28] = 0xdf;
1555 params.regs[31] = 0xe7;
1556 params.regs[32] = 0x04;
1560 case M_VGA_C90x43: case M_VGA_M90x43:
1561 set_width90(¶ms);
1564 case M_ENH_C80x43: case M_ENH_B80x43:
1565 params.regs[28] = 87;
1569 case M_VGA_C90x50: case M_VGA_M90x50:
1570 set_width90(¶ms);
1573 case M_VGA_C80x50: case M_VGA_M80x50:
1576 params.regs[19] = 7;
1580 case M_VGA_C90x25: case M_VGA_M90x25:
1581 set_width90(¶ms);
1584 case M_VGA_C40x25: case M_VGA_C80x25:
1586 case M_B40x25: case M_C40x25:
1587 case M_B80x25: case M_C80x25:
1588 case M_ENH_B40x25: case M_ENH_C40x25:
1589 case M_ENH_B80x25: case M_ENH_C80x25:
1590 case M_EGAMONO80x25:
1593 vga_load_state(adp, ¶ms);
1597 /* "unchain" the VGA mode */
1598 params.regs[5-1+0x04] &= 0xf7;
1599 params.regs[5-1+0x04] |= 0x04;
1600 /* turn off doubleword mode */
1601 params.regs[10+0x14] &= 0xbf;
1602 /* turn off word addressing */
1603 params.regs[10+0x17] |= 0x40;
1604 /* set logical screen width */
1605 params.regs[10+0x13] = 80;
1607 params.regs[10+0x11] = 0x2c;
1608 params.regs[10+0x06] = 0x0d;
1609 params.regs[10+0x07] = 0x3e;
1610 params.regs[10+0x10] = 0xea;
1611 params.regs[10+0x11] = 0xac;
1612 params.regs[10+0x12] = 0xdf;
1613 params.regs[10+0x15] = 0xe7;
1614 params.regs[10+0x16] = 0x06;
1615 /* set vertical sync polarity to reflect aspect ratio */
1616 params.regs[9] = 0xe3;
1619 case M_BG320: case M_CG320: case M_BG640:
1620 case M_CG320_D: case M_CG640_E:
1621 case M_CG640x350: case M_ENH_CG640:
1622 case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
1625 vga_load_state(adp, ¶ms);
1632 adp->va_mode = mode;
1633 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1634 update_adapter_info(adp, &info);
1636 /* move hardware cursor out of the way */
1637 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
1640 #else /* VGA_NO_MODE_CHANGE */
1642 #endif /* VGA_NO_MODE_CHANGE */
1645 #ifndef VGA_NO_FONT_LOADING
1648 set_font_mode(video_adapter_t *adp, u_char *buf)
1654 /* save register values */
1655 if (adp->va_type == KD_VGA) {
1656 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1657 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1658 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1659 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1660 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1661 inb(adp->va_crtc_addr + 6);
1662 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1663 } else /* if (adp->va_type == KD_EGA) */ {
1665 * EGA cannot be read; copy parameters from the mode parameter
1668 mp = get_mode_param(adp->va_mode);
1669 buf[0] = mp[5 + 0x02 - 1];
1670 buf[1] = mp[5 + 0x04 - 1];
1671 buf[2] = mp[55 + 0x04];
1672 buf[3] = mp[55 + 0x05];
1673 buf[4] = mp[55 + 0x06];
1674 buf[5] = mp[35 + 0x10];
1677 /* setup vga for loading fonts */
1678 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1679 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1680 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1681 outb(ATC, 0x20); /* enable palette */
1683 #if VGA_SLOW_IOACCESS
1684 #ifdef VGA_ALT_SEQACCESS
1685 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1687 outb(TSIDX, 0x02); outb(TSREG, 0x04);
1688 outb(TSIDX, 0x04); outb(TSREG, 0x07);
1689 #ifdef VGA_ALT_SEQACCESS
1690 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1692 outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
1693 outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
1694 outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
1695 #else /* VGA_SLOW_IOACCESS */
1696 #ifdef VGA_ALT_SEQACCESS
1697 outw(TSIDX, 0x0100);
1699 outw(TSIDX, 0x0402);
1700 outw(TSIDX, 0x0704);
1701 #ifdef VGA_ALT_SEQACCESS
1702 outw(TSIDX, 0x0300);
1704 outw(GDCIDX, 0x0204);
1705 outw(GDCIDX, 0x0005);
1706 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1707 #endif /* VGA_SLOW_IOACCESS */
1713 set_normal_mode(video_adapter_t *adp, u_char *buf)
1717 /* setup vga for normal operation mode again */
1718 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1719 outb(ATC, 0x10); outb(ATC, buf[5]);
1720 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1721 outb(ATC, 0x20); /* enable palette */
1723 #if VGA_SLOW_IOACCESS
1724 #ifdef VGA_ALT_SEQACCESS
1725 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1727 outb(TSIDX, 0x02); outb(TSREG, buf[0]);
1728 outb(TSIDX, 0x04); outb(TSREG, buf[1]);
1729 #ifdef VGA_ALT_SEQACCESS
1730 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1732 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
1733 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
1734 if (adp->va_crtc_addr == MONO_CRTC) {
1735 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
1737 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
1739 #else /* VGA_SLOW_IOACCESS */
1740 #ifdef VGA_ALT_SEQACCESS
1741 outw(TSIDX, 0x0100);
1743 outw(TSIDX, 0x0002 | (buf[0] << 8));
1744 outw(TSIDX, 0x0004 | (buf[1] << 8));
1745 #ifdef VGA_ALT_SEQACCESS
1746 outw(TSIDX, 0x0300);
1748 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1749 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1750 if (adp->va_crtc_addr == MONO_CRTC)
1751 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
1753 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1754 #endif /* VGA_SLOW_IOACCESS */
1759 #endif /* VGA_NO_FONT_LOADING */
1763 * Read the font data in the requested font page from the video adapter.
1768 vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1771 #ifndef VGA_NO_FONT_LOADING
1772 u_char buf[PARAM_BUFSIZE];
1775 #ifdef VGA_ALT_SEQACCESS
1779 prologue(adp, V_ADP_FONT, ENODEV);
1781 if (fontsize < 14) {
1784 } else if (fontsize >= 32) {
1786 } else if (fontsize >= 16) {
1794 if (page < 0 || page >= 8)
1796 segment = FONT_BUF + 0x4000*page;
1800 #ifdef VGA_ALT_SEQACCESS
1801 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1803 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1804 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1805 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1806 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1811 set_font_mode(adp, buf);
1812 if (fontsize == 32) {
1813 bcopy_fromio(segment + ch*32, data, fontsize*count);
1815 for (c = ch; count > 0; ++c, --count) {
1816 bcopy_fromio(segment + c*32, data, fontsize);
1820 set_normal_mode(adp, buf);
1822 #ifdef VGA_ALT_SEQACCESS
1823 if (adp->va_type == KD_VGA) {
1825 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1826 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1827 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1833 #else /* VGA_NO_FONT_LOADING */
1835 #endif /* VGA_NO_FONT_LOADING */
1840 * Set the font data in the requested font page.
1841 * NOTE: it appears that some recent video adapters do not support
1842 * the font page other than 0... XXX
1847 vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1850 #ifndef VGA_NO_FONT_LOADING
1851 u_char buf[PARAM_BUFSIZE];
1854 #ifdef VGA_ALT_SEQACCESS
1858 prologue(adp, V_ADP_FONT, ENODEV);
1860 if (fontsize < 14) {
1863 } else if (fontsize >= 32) {
1865 } else if (fontsize >= 16) {
1873 if (page < 0 || page >= 8)
1875 segment = FONT_BUF + 0x4000*page;
1879 #ifdef VGA_ALT_SEQACCESS
1880 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1882 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1883 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1884 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1885 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1890 set_font_mode(adp, buf);
1891 if (fontsize == 32) {
1892 bcopy_toio(data, segment + ch*32, fontsize*count);
1894 for (c = ch; count > 0; ++c, --count) {
1895 bcopy_toio(data, segment + c*32, fontsize);
1899 set_normal_mode(adp, buf);
1901 #ifdef VGA_ALT_SEQACCESS
1902 if (adp->va_type == KD_VGA) {
1904 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1905 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1906 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1912 #else /* VGA_NO_FONT_LOADING */
1914 #endif /* VGA_NO_FONT_LOADING */
1919 * Activate the requested font page.
1920 * NOTE: it appears that some recent video adapters do not support
1921 * the font page other than 0... XXX
1926 vga_show_font(video_adapter_t *adp, int page)
1928 #ifndef VGA_NO_FONT_LOADING
1929 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1931 prologue(adp, V_ADP_FONT, ENODEV);
1932 if (page < 0 || page >= 8)
1936 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1940 #else /* VGA_NO_FONT_LOADING */
1942 #endif /* VGA_NO_FONT_LOADING */
1947 * Read DAC values. The values have expressed in 8 bits.
1952 vga_save_palette(video_adapter_t *adp, u_char *palette)
1956 prologue(adp, V_ADP_PALETTE, ENODEV);
1959 * We store 8 bit values in the palette buffer, while the standard
1960 * VGA has 6 bit DAC .
1962 outb(PALRADR, 0x00);
1963 for (i = 0; i < 256*3; ++i)
1964 palette[i] = inb(PALDATA) << 2;
1965 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1970 vga_save_palette2(video_adapter_t *adp, int base, int count,
1971 u_char *r, u_char *g, u_char *b)
1975 prologue(adp, V_ADP_PALETTE, ENODEV);
1977 outb(PALRADR, base);
1978 for (i = 0; i < count; ++i) {
1979 r[i] = inb(PALDATA) << 2;
1980 g[i] = inb(PALDATA) << 2;
1981 b[i] = inb(PALDATA) << 2;
1983 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1994 vga_load_palette(video_adapter_t *adp, const u_char *palette)
1998 prologue(adp, V_ADP_PALETTE, ENODEV);
2000 outb(PIXMASK, 0xff); /* no pixelmask */
2001 outb(PALWADR, 0x00);
2002 for (i = 0; i < 256*3; ++i)
2003 outb(PALDATA, palette[i] >> 2);
2004 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2005 outb(ATC, 0x20); /* enable palette */
2010 vga_load_palette2(video_adapter_t *adp, int base, int count,
2011 u_char *r, u_char *g, u_char *b)
2015 prologue(adp, V_ADP_PALETTE, ENODEV);
2017 outb(PIXMASK, 0xff); /* no pixelmask */
2018 outb(PALWADR, base);
2019 for (i = 0; i < count; ++i) {
2020 outb(PALDATA, r[i] >> 2);
2021 outb(PALDATA, g[i] >> 2);
2022 outb(PALDATA, b[i] >> 2);
2024 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2025 outb(ATC, 0x20); /* enable palette */
2031 * Change the border color.
2036 vga_set_border(video_adapter_t *adp, int color)
2038 prologue(adp, V_ADP_BORDER, ENODEV);
2040 switch (adp->va_type) {
2043 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
2044 outb(ATC, 0x31); outb(ATC, color & 0xff);
2047 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
2059 * Read video register values.
2060 * NOTE: this function only reads the standard EGA/VGA registers.
2061 * any extra/extended registers of SVGA adapters are not saved.
2066 vga_save_state(video_adapter_t *adp, void *p, size_t size)
2074 /* return the required buffer size */
2075 prologue(adp, V_ADP_STATESAVE, 0);
2076 return sizeof(adp_state_t);
2078 prologue(adp, V_ADP_STATESAVE, ENODEV);
2079 if (size < sizeof(adp_state_t))
2083 ((adp_state_t *)p)->sig = V_STATE_SIG;
2084 buf = ((adp_state_t *)p)->regs;
2085 bzero(buf, V_MODE_PARAM_SIZE);
2086 crtc_addr = adp->va_crtc_addr;
2090 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2091 for (i = 0, j = 5; i < 4; i++) {
2093 buf[j++] = inb(TSREG);
2095 buf[9] = inb(MISC + 10); /* dot-clock */
2096 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2098 for (i = 0, j = 10; i < 25; i++) { /* crtc */
2100 buf[j++] = inb(crtc_addr + 1);
2102 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
2103 inb(crtc_addr + 6); /* reset flip-flop */
2105 buf[j++] = inb(ATC + 1);
2107 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
2109 buf[j++] = inb(GDCREG);
2111 inb(crtc_addr + 6); /* reset flip-flop */
2112 outb(ATC, 0x20); /* enable palette */
2117 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
2118 if (info.vi_flags & V_INFO_GRAPHICS) {
2119 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
2120 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
2122 buf[0] = info.vi_width; /* COLS */
2123 buf[1] = info.vi_height - 1; /* ROWS */
2125 buf[2] = info.vi_cheight; /* POINTS */
2127 /* XXX: shouldn't be happening... */
2128 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
2129 adp->va_unit, adp->va_name);
2132 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
2133 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
2134 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
2135 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
2136 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
2144 * Set video registers at once.
2145 * NOTE: this function only updates the standard EGA/VGA registers.
2146 * any extra/extended registers of SVGA adapters are not changed.
2151 vga_load_state(video_adapter_t *adp, void *p)
2157 prologue(adp, V_ADP_STATELOAD, ENODEV);
2158 if (((adp_state_t *)p)->sig != V_STATE_SIG)
2161 buf = ((adp_state_t *)p)->regs;
2162 crtc_addr = adp->va_crtc_addr;
2165 dump_buffer(buf, V_MODE_PARAM_SIZE);
2170 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2171 for (i = 0; i < 4; ++i) { /* program sequencer */
2173 outb(TSREG, buf[i + 5]);
2175 outb(MISC, buf[9]); /* set dot-clock */
2176 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2177 outb(crtc_addr, 0x11);
2178 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
2179 for (i = 0; i < 25; ++i) { /* program crtc */
2181 outb(crtc_addr + 1, buf[i + 10]);
2183 inb(crtc_addr+6); /* reset flip-flop */
2184 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
2186 outb(ATC, buf[i + 35]);
2188 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
2190 outb(GDCREG, buf[i + 55]);
2192 inb(crtc_addr + 6); /* reset flip-flop */
2193 outb(ATC, 0x20); /* enable palette */
2195 #if notyet /* a temporary workaround for kernel panic, XXX */
2197 if (adp->va_unit == V_ADP_PRIMARY) {
2198 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
2199 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
2200 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
2202 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
2203 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
2206 #endif /* VGA_NO_BIOS */
2215 * Change the origin (window mapping) of the banked frame buffer.
2218 vga_set_origin(video_adapter_t *adp, off_t offset)
2221 * The standard video modes do not require window mapping;
2222 * always return error.
2229 * Read the position of the hardware text cursor.
2234 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
2241 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2245 outb(adp->va_crtc_addr, 14);
2246 off = inb(adp->va_crtc_addr + 1);
2247 outb(adp->va_crtc_addr, 15);
2248 off = (off << 8) | inb(adp->va_crtc_addr + 1);
2251 *row = off / adp->va_info.vi_width;
2252 *col = off % adp->va_info.vi_width;
2259 * Move the hardware text cursor. If col and row are both -1,
2260 * the cursor won't be shown.
2265 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
2272 if ((col == -1) && (row == -1)) {
2275 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2277 off = row*adp->va_info.vi_width + col;
2281 outb(adp->va_crtc_addr, 14);
2282 outb(adp->va_crtc_addr + 1, off >> 8);
2283 outb(adp->va_crtc_addr, 15);
2284 outb(adp->va_crtc_addr + 1, off & 0x00ff);
2291 * set_hw_cursor_shape():
2292 * Change the shape of the hardware text cursor. If the height is
2293 * zero or negative, the cursor won't be shown.
2298 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
2299 int celsize, int blink)
2305 switch (adp->va_type) {
2312 /* make the cursor invisible */
2313 outb(adp->va_crtc_addr, 10);
2314 outb(adp->va_crtc_addr + 1, 32);
2315 outb(adp->va_crtc_addr, 11);
2316 outb(adp->va_crtc_addr + 1, 0);
2318 outb(adp->va_crtc_addr, 10);
2319 outb(adp->va_crtc_addr + 1, celsize - base - height);
2320 outb(adp->va_crtc_addr, 11);
2321 outb(adp->va_crtc_addr + 1, celsize - base - 1);
2326 /* make the cursor invisible */
2327 outb(adp->va_crtc_addr, 10);
2328 outb(adp->va_crtc_addr + 1, celsize);
2329 outb(adp->va_crtc_addr, 11);
2330 outb(adp->va_crtc_addr + 1, 0);
2332 outb(adp->va_crtc_addr, 10);
2333 outb(adp->va_crtc_addr + 1, celsize - base - height);
2334 outb(adp->va_crtc_addr, 11);
2335 outb(adp->va_crtc_addr + 1, celsize - base);
2346 * Put the display in power save/power off mode.
2351 vga_blank_display(video_adapter_t *adp, int mode)
2356 switch (adp->va_type) {
2359 case V_DISPLAY_SUSPEND:
2360 case V_DISPLAY_STAND_BY:
2364 outb(TSREG, val | 0x20);
2365 outb(adp->va_crtc_addr, 0x17);
2366 val = inb(adp->va_crtc_addr + 1);
2367 outb(adp->va_crtc_addr + 1, val & ~0x80);
2369 case V_DISPLAY_BLANK:
2373 outb(TSREG, val | 0x20);
2379 outb(TSREG, val & 0xDF);
2380 outb(adp->va_crtc_addr, 0x17);
2381 val = inb(adp->va_crtc_addr + 1);
2382 outb(adp->va_crtc_addr + 1, val | 0x80);
2388 /* no support yet */
2394 case V_DISPLAY_SUSPEND:
2395 case V_DISPLAY_STAND_BY:
2396 case V_DISPLAY_BLANK:
2397 outb(adp->va_crtc_addr + 4, 0x25);
2400 outb(adp->va_crtc_addr + 4, 0x2d);
2408 case V_DISPLAY_SUSPEND:
2409 case V_DISPLAY_STAND_BY:
2410 case V_DISPLAY_BLANK:
2411 outb(adp->va_crtc_addr + 4, 0x21);
2414 outb(adp->va_crtc_addr + 4, 0x29);
2428 * Mmap frame buffer.
2433 vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
2435 if (adp->va_info.vi_flags & V_INFO_LINEAR)
2439 printf("vga_mmap_buf(): window:0x%x, offset:0x%x\n",
2440 adp->va_info.vi_window, offset);
2443 /* XXX: is this correct? */
2444 if (offset > adp->va_window_size - PAGE_SIZE)
2448 return i386_btop(adp->va_info.vi_window + offset);
2452 #ifndef VGA_NO_MODE_CHANGE
2455 planar_fill(video_adapter_t *adp, int val)
2458 int at; /* position in the frame buffer */
2461 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2462 outw(GDCIDX, 0x0003); /* data rotate/function select */
2463 outw(GDCIDX, 0x0f01); /* set/reset enable */
2464 outw(GDCIDX, 0xff08); /* bit mask */
2465 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2467 length = adp->va_line_width*adp->va_info.vi_height;
2468 while (length > 0) {
2469 l = imin(length, adp->va_window_size);
2470 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2471 bzero_io(adp->va_window, l);
2475 outw(GDCIDX, 0x0000); /* set/reset */
2476 outw(GDCIDX, 0x0001); /* set/reset enable */
2480 packed_fill(video_adapter_t *adp, int val)
2483 int at; /* position in the frame buffer */
2487 length = adp->va_line_width*adp->va_info.vi_height;
2488 while (length > 0) {
2489 l = imin(length, adp->va_window_size);
2490 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2491 fill_io(val, adp->va_window, l);
2498 direct_fill(video_adapter_t *adp, int val)
2501 int at; /* position in the frame buffer */
2505 length = adp->va_line_width*adp->va_info.vi_height;
2506 while (length > 0) {
2507 l = imin(length, adp->va_window_size);
2508 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2509 switch (adp->va_info.vi_pixel_size) {
2510 case sizeof(u_int16_t):
2511 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
2516 case sizeof(u_int32_t):
2517 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
2526 vga_clear(video_adapter_t *adp)
2528 switch (adp->va_info.vi_mem_model) {
2529 case V_INFO_MM_TEXT:
2530 /* do nothing? XXX */
2532 case V_INFO_MM_PLANAR:
2533 planar_fill(adp, 0);
2535 case V_INFO_MM_PACKED:
2536 packed_fill(adp, 0);
2538 case V_INFO_MM_DIRECT:
2539 direct_fill(adp, 0);
2547 planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2552 int offset; /* offset within window */
2556 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2557 outw(GDCIDX, 0x0003); /* data rotate/function select */
2558 outw(GDCIDX, 0x0f01); /* set/reset enable */
2559 outw(GDCIDX, 0xff08); /* bit mask */
2560 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2562 banksize = adp->va_window_size;
2565 pos = adp->va_line_width*y + x/8;
2566 if (bank != pos/banksize) {
2567 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2568 bank = pos/banksize;
2570 offset = pos%banksize;
2571 bx = (x + cx)/8 - x/8;
2573 outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
2574 writeb(adp->va_window + offset, 0);
2577 if (offset >= banksize) {
2579 ++bank; /* next bank */
2580 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2582 outw(GDCIDX, 0xff08); /* bit mask */
2585 l = imin(bx, banksize);
2586 bzero_io(adp->va_window + offset, l);
2589 if (offset >= banksize) {
2591 ++bank; /* next bank */
2592 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2596 outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
2597 writeb(adp->va_window + offset, 0);
2599 if (offset >= banksize) {
2601 ++bank; /* next bank */
2602 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2604 outw(GDCIDX, 0xff08); /* bit mask */
2610 outw(GDCIDX, 0xff08); /* bit mask */
2611 outw(GDCIDX, 0x0000); /* set/reset */
2612 outw(GDCIDX, 0x0001); /* set/reset enable */
2616 packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2621 int offset; /* offset within window */
2624 banksize = adp->va_window_size;
2626 cx *= adp->va_info.vi_pixel_size;
2628 pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
2629 if (bank != pos/banksize) {
2630 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2631 bank = pos/banksize;
2633 offset = pos%banksize;
2634 end = imin(offset + cx, banksize);
2635 fill_io(val, adp->va_window + offset,
2636 (end - offset)/adp->va_info.vi_pixel_size);
2637 /* the line may cross the window boundary */
2638 if (offset + cx > banksize) {
2639 ++bank; /* next bank */
2640 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2641 end = offset + cx - banksize;
2642 fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
2650 direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2655 int offset; /* offset within window */
2659 * XXX: the function assumes that banksize is a muliple of
2660 * sizeof(u_int16_t).
2662 banksize = adp->va_window_size;
2664 cx *= sizeof(u_int16_t);
2666 pos = adp->va_line_width*y + x*sizeof(u_int16_t);
2667 if (bank != pos/banksize) {
2668 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2669 bank = pos/banksize;
2671 offset = pos%banksize;
2672 end = imin(offset + cx, banksize);
2673 fillw_io(val, adp->va_window + offset,
2674 (end - offset)/sizeof(u_int16_t));
2675 /* the line may cross the window boundary */
2676 if (offset + cx > banksize) {
2677 ++bank; /* next bank */
2678 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2679 end = offset + cx - banksize;
2680 fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
2688 direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2693 int offset; /* offset within window */
2699 b[0] = val & 0x0000ff;
2700 b[1] = (val >> 8) & 0x0000ff;
2701 b[2] = (val >> 16) & 0x0000ff;
2702 banksize = adp->va_window_size;
2706 pos = adp->va_line_width*y + x*3;
2707 if (bank != pos/banksize) {
2708 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2709 bank = pos/banksize;
2711 offset = pos%banksize;
2712 end = imin(offset + cx, banksize);
2713 for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
2714 writeb(adp->va_window + j, b[i]);
2716 /* the line may cross the window boundary */
2717 if (offset + cx >= banksize) {
2718 ++bank; /* next bank */
2719 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2721 end = offset + cx - banksize;
2722 for (; j < end; i = (++i)%3, ++j) {
2723 writeb(adp->va_window + j, b[i]);
2732 direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2737 int offset; /* offset within window */
2741 * XXX: the function assumes that banksize is a muliple of
2742 * sizeof(u_int32_t).
2744 banksize = adp->va_window_size;
2746 cx *= sizeof(u_int32_t);
2748 pos = adp->va_line_width*y + x*sizeof(u_int32_t);
2749 if (bank != pos/banksize) {
2750 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2751 bank = pos/banksize;
2753 offset = pos%banksize;
2754 end = imin(offset + cx, banksize);
2755 filll_io(val, adp->va_window + offset,
2756 (end - offset)/sizeof(u_int32_t));
2757 /* the line may cross the window boundary */
2758 if (offset + cx > banksize) {
2759 ++bank; /* next bank */
2760 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2761 end = offset + cx - banksize;
2762 filll_io(val, adp->va_window, end/sizeof(u_int32_t));
2770 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2772 switch (adp->va_info.vi_mem_model) {
2773 case V_INFO_MM_TEXT:
2774 /* do nothing? XXX */
2776 case V_INFO_MM_PLANAR:
2777 planar_fill_rect(adp, val, x, y, cx, cy);
2779 case V_INFO_MM_PACKED:
2780 packed_fill_rect(adp, val, x, y, cx, cy);
2782 case V_INFO_MM_DIRECT:
2783 switch (adp->va_info.vi_pixel_size) {
2784 case sizeof(u_int16_t):
2785 direct_fill_rect16(adp, val, x, y, cx, cy);
2788 direct_fill_rect24(adp, val, x, y, cx, cy);
2790 case sizeof(u_int32_t):
2791 direct_fill_rect32(adp, val, x, y, cx, cy);
2800 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2807 vga_bitblt(video_adapter_t *adp,...)
2813 #endif /* !VGA_NO_MODE_CHANGE */
2816 get_palette(video_adapter_t *adp, int base, int count,
2817 u_char *red, u_char *green, u_char *blue, u_char *trans)
2823 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2827 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2830 if (vga_save_palette2(adp, base, count, r, g, b)) {
2834 copyout(r, red, count);
2835 copyout(g, green, count);
2836 copyout(b, blue, count);
2837 if (trans != NULL) {
2839 copyout(r, trans, count);
2847 set_palette(video_adapter_t *adp, int base, int count,
2848 u_char *red, u_char *green, u_char *blue, u_char *trans)
2855 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2859 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2862 err = copyin(red, r, count);
2864 err = copyin(green, g, count);
2866 err = copyin(blue, b, count);
2868 err = vga_load_palette2(adp, base, count, r, g, b);
2871 return (err ? ENODEV : 0);
2875 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
2878 case FBIO_GETWINORG: /* get frame buffer window origin */
2882 case FBIO_SETWINORG: /* set frame buffer window origin */
2885 case FBIO_SETDISPSTART: /* set display start address */
2886 return (set_display_start(adp,
2887 ((video_display_start_t *)arg)->x,
2888 ((video_display_start_t *)arg)->y)
2891 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
2892 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
2894 case FBIO_GETPALETTE: /* get color palette */
2895 return get_palette(adp, ((video_color_palette_t *)arg)->index,
2896 ((video_color_palette_t *)arg)->count,
2897 ((video_color_palette_t *)arg)->red,
2898 ((video_color_palette_t *)arg)->green,
2899 ((video_color_palette_t *)arg)->blue,
2900 ((video_color_palette_t *)arg)->transparent);
2902 case FBIO_SETPALETTE: /* set color palette */
2903 return set_palette(adp, ((video_color_palette_t *)arg)->index,
2904 ((video_color_palette_t *)arg)->count,
2905 ((video_color_palette_t *)arg)->red,
2906 ((video_color_palette_t *)arg)->green,
2907 ((video_color_palette_t *)arg)->blue,
2908 ((video_color_palette_t *)arg)->transparent);
2910 case FBIOGTYPE: /* get frame buffer type info. */
2911 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
2912 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
2913 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
2914 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
2915 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
2916 ((struct fbtype *)arg)->fb_cmsize = 0;
2918 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
2919 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
2922 case FBIOGETCMAP: /* get color palette */
2923 return get_palette(adp, ((struct fbcmap *)arg)->index,
2924 ((struct fbcmap *)arg)->count,
2925 ((struct fbcmap *)arg)->red,
2926 ((struct fbcmap *)arg)->green,
2927 ((struct fbcmap *)arg)->blue, NULL);
2929 case FBIOPUTCMAP: /* set color palette */
2930 return set_palette(adp, ((struct fbcmap *)arg)->index,
2931 ((struct fbcmap *)arg)->count,
2932 ((struct fbcmap *)arg)->red,
2933 ((struct fbcmap *)arg)->green,
2934 ((struct fbcmap *)arg)->blue, NULL);
2937 return fb_commonioctl(adp, cmd, arg);
2942 dump_buffer(u_char *buf, size_t len)
2946 for(i = 0; i < len;) {
2947 printf("%02x ", buf[i]);
2948 if ((++i % 16) == 0)
2955 * Print some information about the video adapter and video modes,
2956 * with requested level of details.
2961 vga_diag(video_adapter_t *adp, int level)
2974 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
2975 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
2976 printf("vga: CRTC:0x%x, video option:0x%02x, ",
2977 readw(BIOS_PADDRTOVADDR(0x463)),
2978 readb(BIOS_PADDRTOVADDR(0x487)));
2979 printf("rows:%d, cols:%d, font height:%d\n",
2980 readb(BIOS_PADDRTOVADDR(0x44a)),
2981 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
2982 readb(BIOS_PADDRTOVADDR(0x485)));
2983 #endif /* VGA_NO_BIOS */
2984 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
2985 printf("vga: param table EGA/VGA:%p", video_mode_ptr);
2986 printf(", CGA/MDA:%p\n", video_mode_ptr2);
2987 printf("vga: rows_offset:%d\n", rows_offset);
2989 #endif /* FB_DEBUG > 1 */
2991 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
2994 if (adp->va_flags & V_ADP_MODECHANGE) {
2995 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
2996 if (bios_vmode[i].vi_mode == NA)
2998 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
3000 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
3003 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
3004 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
3006 #endif /* FB_DEBUG > 1 */
3008 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
3010 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
3011 if (video_mode_ptr == NULL)
3012 printf("vga%d: %s: WARNING: video mode switching is not "
3013 "fully supported on this adapter\n",
3014 adp->va_unit, adp->va_name);
3019 if (adp->va_type == KD_VGA) {
3020 printf("VGA parameters upon power-up\n");
3021 dump_buffer(adpstate.regs, sizeof(adpstate.regs));
3022 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
3023 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
3026 mp = get_mode_param(adp->va_initial_mode);
3027 if (mp == NULL) /* this shouldn't be happening */
3029 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
3030 dump_buffer(mp, V_MODE_PARAM_SIZE);