2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer as
10 * the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 * $FreeBSD: src/sys/i386/isa/vesa.c,v 1.32.2.1 2002/08/13 02:42:33 rwatson Exp $
27 * $DragonFly: src/sys/dev/video/i386/vesa/vesa.c,v 1.6 2005/02/01 16:30:02 joerg Exp $
33 #ifndef VGA_NO_MODE_CHANGE
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
39 #include <sys/malloc.h>
43 #include <vm/vm_extern.h>
44 #include <vm/vm_kern.h>
47 #include <machine/md_var.h>
48 #include <machine/vm86.h>
49 #include <machine/pc/bios.h>
50 #include <machine/pc/vesa.h>
52 #include <dev/video/fb/fbreg.h>
53 #include <dev/video/fb/vgareg.h>
56 #include <bus/isa/isareg.h>
58 #include <bus/isa/i386/isa.h>
61 #define VESA_VIA_CLE266 "VIA CLE266\r\n"
67 /* VESA video adapter state buffer stub */
70 #define V_STATE_SIG 0x61736576
73 typedef struct adp_state adp_state_t;
75 /* VESA video adapter */
76 static video_adapter_t *vesa_adp = NULL;
77 static int vesa_state_buf_size = 0;
81 static int vesa_nop(void);
83 static int vesa_error(void);
84 static vi_probe_t vesa_probe;
85 static vi_init_t vesa_init;
86 static vi_get_info_t vesa_get_info;
87 static vi_query_mode_t vesa_query_mode;
88 static vi_set_mode_t vesa_set_mode;
89 static vi_save_font_t vesa_save_font;
90 static vi_load_font_t vesa_load_font;
91 static vi_show_font_t vesa_show_font;
92 static vi_save_palette_t vesa_save_palette;
93 static vi_load_palette_t vesa_load_palette;
94 static vi_set_border_t vesa_set_border;
95 static vi_save_state_t vesa_save_state;
96 static vi_load_state_t vesa_load_state;
97 static vi_set_win_org_t vesa_set_origin;
98 static vi_read_hw_cursor_t vesa_read_hw_cursor;
99 static vi_set_hw_cursor_t vesa_set_hw_cursor;
100 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
101 static vi_blank_display_t vesa_blank_display;
102 static vi_mmap_t vesa_mmap;
103 static vi_ioctl_t vesa_ioctl;
104 static vi_clear_t vesa_clear;
105 static vi_fill_rect_t vesa_fill_rect;
106 static vi_bitblt_t vesa_bitblt;
107 static vi_diag_t vesa_diag;
108 static int vesa_bios_info(int level);
109 static struct vm86context vesa_vmcontext;
111 static video_switch_t vesavidsw = {
128 vesa_set_hw_cursor_shape,
140 static video_switch_t *prevvidsw;
142 /* VESA BIOS video modes */
143 #define VESA_MAXMODES 64
147 #define MODE_TABLE_DELTA 8
149 static int vesa_vmode_max = 0;
150 static video_info_t vesa_vmode_empty = { EOT };
151 static video_info_t *vesa_vmode = &vesa_vmode_empty;
153 static int vesa_init_done = FALSE;
154 static int has_vesa_bios = FALSE;
155 static struct vesa_info *vesa_adp_info = NULL;
156 static u_int16_t *vesa_vmodetab = NULL;
157 static char *vesa_oemstr = NULL;
158 static char *vesa_venderstr = NULL;
159 static char *vesa_prodstr = NULL;
160 static char *vesa_revstr = NULL;
162 /* local macros and functions */
163 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
165 static int int10_set_mode(int mode);
166 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
167 static int vesa_bios_set_mode(int mode);
168 static int vesa_bios_get_dac(void);
169 static int vesa_bios_set_dac(int bits);
170 static int vesa_bios_save_palette(int start, int colors, u_char *palette,
172 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
173 u_char *b, int bits);
174 static int vesa_bios_load_palette(int start, int colors, const u_char *palette,
177 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
178 u_char *b, int bits);
183 #define STATE_HW (1<<0)
184 #define STATE_DATA (1<<1)
185 #define STATE_DAC (1<<2)
186 #define STATE_REG (1<<3)
187 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG)
188 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
189 static int vesa_bios_state_buf_size(void);
190 static int vesa_bios_save_restore(int code, void *p, size_t size);
191 static int vesa_bios_get_line_length(void);
192 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
194 static int vesa_bios_get_start(int *x, int *y);
196 static int vesa_bios_set_start(int x, int y);
197 static int vesa_map_gen_mode_num(int type, int color, int mode);
198 static int vesa_translate_flags(u_int16_t vflags);
199 static int vesa_translate_mmodel(u_int8_t vmodel);
200 static void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off,
202 static int vesa_bios_init(void);
203 static void vesa_clear_modes(video_info_t *info, int color);
204 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size);
205 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size);
208 static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
212 dump_buffer(u_char *buf, size_t len)
216 for(i = 0; i < len;) {
217 printf("%02x ", buf[i]);
223 /* INT 10 BIOS calls */
225 int10_set_mode(int mode)
227 struct vm86frame vmf;
229 bzero(&vmf, sizeof(vmf));
230 vmf.vmf_eax = 0x0000 | mode;
231 vm86_intcall(0x10, &vmf);
235 /* VESA BIOS calls */
237 vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
239 struct vm86frame vmf;
243 bzero(&vmf, sizeof(vmf));
244 vmf.vmf_eax = 0x4f01;
246 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
247 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
249 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
250 if ((err != 0) || (vmf.vmf_ax != 0x4f))
252 bcopy(buf, vmode, sizeof(*vmode));
257 vesa_bios_set_mode(int mode)
259 struct vm86frame vmf;
262 bzero(&vmf, sizeof(vmf));
263 vmf.vmf_eax = 0x4f02;
265 err = vm86_intcall(0x10, &vmf);
266 return ((err != 0) || (vmf.vmf_ax != 0x4f));
270 vesa_bios_get_dac(void)
272 struct vm86frame vmf;
275 bzero(&vmf, sizeof(vmf));
276 vmf.vmf_eax = 0x4f08;
277 vmf.vmf_ebx = 1; /* get DAC width */
278 err = vm86_intcall(0x10, &vmf);
279 if ((err != 0) || (vmf.vmf_ax != 0x4f))
281 return ((vmf.vmf_ebx >> 8) & 0x00ff);
285 vesa_bios_set_dac(int bits)
287 struct vm86frame vmf;
290 bzero(&vmf, sizeof(vmf));
291 vmf.vmf_eax = 0x4f08;
292 vmf.vmf_ebx = (bits << 8);
293 err = vm86_intcall(0x10, &vmf);
294 if ((err != 0) || (vmf.vmf_ax != 0x4f))
296 return ((vmf.vmf_ebx >> 8) & 0x00ff);
300 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
302 struct vm86frame vmf;
307 bzero(&vmf, sizeof(vmf));
308 vmf.vmf_eax = 0x4f09;
309 vmf.vmf_ebx = 1; /* get primary palette data */
310 vmf.vmf_ecx = colors;
312 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
313 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
315 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
316 if ((err != 0) || (vmf.vmf_ax != 0x4f))
320 for (i = 0; i < colors; ++i) {
321 palette[i*3] = p[i*4 + 2] << bits;
322 palette[i*3 + 1] = p[i*4 + 1] << bits;
323 palette[i*3 + 2] = p[i*4] << bits;
329 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
332 struct vm86frame vmf;
337 bzero(&vmf, sizeof(vmf));
338 vmf.vmf_eax = 0x4f09;
339 vmf.vmf_ebx = 1; /* get primary palette data */
340 vmf.vmf_ecx = colors;
342 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
343 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
345 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
346 if ((err != 0) || (vmf.vmf_ax != 0x4f))
350 for (i = 0; i < colors; ++i) {
351 r[i] = p[i*4 + 2] << bits;
352 g[i] = p[i*4 + 1] << bits;
353 b[i] = p[i*4] << bits;
359 vesa_bios_load_palette(int start, int colors, const u_char *palette, int bits)
361 struct vm86frame vmf;
366 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
368 for (i = 0; i < colors; ++i) {
369 p[i*4] = palette[i*3 + 2] >> bits;
370 p[i*4 + 1] = palette[i*3 + 1] >> bits;
371 p[i*4 + 2] = palette[i*3] >> bits;
375 bzero(&vmf, sizeof(vmf));
376 vmf.vmf_eax = 0x4f09;
377 vmf.vmf_ebx = 0; /* set primary palette data */
378 vmf.vmf_ecx = colors;
380 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
382 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
383 return ((err != 0) || (vmf.vmf_ax != 0x4f));
388 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
391 struct vm86frame vmf;
396 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
398 for (i = 0; i < colors; ++i) {
399 p[i*4] = b[i] >> bits;
400 p[i*4 + 1] = g[i] >> bits;
401 p[i*4 + 2] = r[i] >> bits;
405 bzero(&vmf, sizeof(vmf));
406 vmf.vmf_eax = 0x4f09;
407 vmf.vmf_ebx = 0; /* set primary palette data */
408 vmf.vmf_ecx = colors;
410 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
412 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
413 return ((err != 0) || (vmf.vmf_ax != 0x4f));
418 vesa_bios_state_buf_size(void)
420 struct vm86frame vmf;
423 bzero(&vmf, sizeof(vmf));
424 vmf.vmf_eax = 0x4f04;
425 vmf.vmf_ecx = STATE_MOST;
426 vmf.vmf_edx = STATE_SIZE;
427 err = vm86_intcall(0x10, &vmf);
428 if ((err != 0) || (vmf.vmf_ax != 0x4f))
430 return vmf.vmf_bx*64;
434 vesa_bios_save_restore(int code, void *p, size_t size)
436 struct vm86frame vmf;
440 bzero(&vmf, sizeof(vmf));
441 vmf.vmf_eax = 0x4f04;
442 vmf.vmf_ecx = STATE_MOST;
443 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
444 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
445 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
448 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
449 return ((err != 0) || (vmf.vmf_ax != 0x4f));
453 vesa_bios_get_line_length(void)
455 struct vm86frame vmf;
458 bzero(&vmf, sizeof(vmf));
459 vmf.vmf_eax = 0x4f06;
460 vmf.vmf_ebx = 1; /* get scan line length */
461 err = vm86_intcall(0x10, &vmf);
462 if ((err != 0) || (vmf.vmf_ax != 0x4f))
464 return vmf.vmf_bx; /* line length in bytes */
468 vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
470 struct vm86frame vmf;
473 bzero(&vmf, sizeof(vmf));
474 vmf.vmf_eax = 0x4f06;
475 vmf.vmf_ebx = 0; /* set scan line length in pixel */
477 err = vm86_intcall(0x10, &vmf);
479 printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx);
481 if ((err != 0) || (vmf.vmf_ax != 0x4f))
492 vesa_bios_get_start(int *x, int *y)
494 struct vm86frame vmf;
497 bzero(&vmf, sizeof(vmf));
498 vmf.vmf_eax = 0x4f07;
499 vmf.vmf_ebx = 1; /* get display start */
500 err = vm86_intcall(0x10, &vmf);
501 if ((err != 0) || (vmf.vmf_ax != 0x4f))
510 vesa_bios_set_start(int x, int y)
512 struct vm86frame vmf;
515 bzero(&vmf, sizeof(vmf));
516 vmf.vmf_eax = 0x4f07;
517 vmf.vmf_ebx = 0x80; /* set display start */
520 err = vm86_intcall(0x10, &vmf);
521 return ((err != 0) || (vmf.vmf_ax != 0x4f));
524 /* map a generic video mode to a known mode */
526 vesa_map_gen_mode_num(int type, int color, int mode)
532 { M_TEXT_132x25, M_VESA_C132x25 },
533 { M_TEXT_132x43, M_VESA_C132x43 },
534 { M_TEXT_132x50, M_VESA_C132x50 },
535 { M_TEXT_132x60, M_VESA_C132x60 },
539 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
540 if (mode_map[i].from == mode)
541 return mode_map[i].to;
547 vesa_translate_flags(u_int16_t vflags)
554 { V_MODECOLOR, V_INFO_COLOR, 0 },
555 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
556 { V_MODELFB, V_INFO_LINEAR, 0 },
561 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
562 flags |= (vflags & ftable[i].mask) ?
563 ftable[i].set : ftable[i].reset;
569 vesa_translate_mmodel(u_int8_t vmodel)
575 { V_MMTEXT, V_INFO_MM_TEXT },
576 { V_MMCGA, V_INFO_MM_CGA },
577 { V_MMHGC, V_INFO_MM_HGC },
578 { V_MMEGA, V_INFO_MM_PLANAR },
579 { V_MMPACKED, V_INFO_MM_PACKED },
580 { V_MMDIRCOLOR, V_INFO_MM_DIRECT },
584 for (i = 0; mtable[i].mmodel >= 0; ++i) {
585 if (mtable[i].vmodel == vmodel)
586 return mtable[i].mmodel;
588 return V_INFO_MM_OTHER;
592 *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf)
596 if (((p >> 16) == seg) && ((p & 0xffff) >= off))
597 return (void *)(buf + ((p & 0xffff) - off));
599 p = BIOS_SADDRTOLADDR(p);
600 return (void *)BIOS_PADDRTOVADDR(p);
607 static u_char buf[512];
608 struct vm86frame vmf;
609 struct vesa_mode vmode;
620 has_vesa_bios = FALSE;
621 vesa_adp_info = NULL;
623 vesa_vmode[0].vi_mode = EOT;
625 vmbuf = (u_char *)vm86_addpage(&vesa_vmcontext, 1, 0);
626 bzero(&vmf, sizeof(vmf)); /* paranoia */
627 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
628 vmf.vmf_eax = 0x4f00;
629 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di);
631 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
632 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4))
634 bcopy(vmbuf, buf, sizeof(buf));
635 vesa_adp_info = (struct vesa_info *)buf;
637 printf("VESA: information block\n");
638 dump_buffer(buf, 64);
640 if (vesa_adp_info->v_flags & V_NONVGA)
642 if (vesa_adp_info->v_version < 0x0102) {
643 printf("VESA: VBE version %d.%d is not supported; "
644 "version 1.2 or later is required.\n",
645 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10
646 + ((vesa_adp_info->v_version & 0x0f00) >> 8),
647 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
648 + (vesa_adp_info->v_version & 0x000f));
652 /* fix string ptrs */
653 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr,
654 vmf.vmf_es, vmf.vmf_di, buf);
655 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0;
657 if (vesa_adp_info->v_version >= 0x0200) {
659 (char *)vesa_fix_ptr(vesa_adp_info->v_venderstr,
660 vmf.vmf_es, vmf.vmf_di, buf);
662 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr,
663 vmf.vmf_es, vmf.vmf_di, buf);
665 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr,
666 vmf.vmf_es, vmf.vmf_di, buf);
669 /* obtain video mode information */
670 vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable,
671 vmf.vmf_es, vmf.vmf_di, buf);
672 if (vesa_vmodetab == NULL)
674 for (i = 0, modes = 0;
675 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
676 && (vesa_vmodetab[i] != 0xffff); ++i) {
677 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
680 /* reject unsupported modes */
682 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO
684 != (V_MODESUPP | V_MODEOPTINFO))
687 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) {
689 printf("Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n",
690 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
691 vmode.v_width, vmode.v_height, vmode.v_bpp,
698 /* expand the array if necessary */
699 if (modes >= vesa_vmode_max) {
700 vesa_vmode_max += MODE_TABLE_DELTA;
701 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1),
704 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
705 modes, vesa_vmode_max);
708 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
709 free(vesa_vmode, M_DEVBUF);
715 printf("Found VESA %s mode: %d x %d x %d bpp\n",
716 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
717 vmode.v_width, vmode.v_height, vmode.v_bpp);
720 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) {
721 vmode.v_width &= 0xff;
722 vmode.v_waseg = 0xb8000 >> 4;
726 /* copy some fields */
727 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
728 vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
729 vesa_vmode[modes].vi_width = vmode.v_width;
730 vesa_vmode[modes].vi_height = vmode.v_height;
731 vesa_vmode[modes].vi_depth = vmode.v_bpp;
732 vesa_vmode[modes].vi_planes = vmode.v_planes;
733 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
734 vesa_vmode[modes].vi_cheight = vmode.v_cheight;
735 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4;
737 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024;
738 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024;
739 if (vmode.v_modeattr & V_MODELFB)
740 vesa_vmode[modes].vi_buffer = vmode.v_lfb;
742 vesa_vmode[modes].vi_buffer = 0;
744 vesa_vmode[modes].vi_buffer_size
745 = vesa_adp_info->v_memsize*64*1024;
747 if (vmode.v_offscreen > vmode.v_lfb)
748 vesa_vmode[modes].vi_buffer_size
749 = vmode.v_offscreen + vmode.v_offscreensize*1024
752 vesa_vmode[modes].vi_buffer_size
753 = vmode.v_offscreen + vmode.v_offscreensize*1024
755 vesa_vmode[modes].vi_mem_model
756 = vesa_translate_mmodel(vmode.v_memmodel);
757 vesa_vmode[modes].vi_pixel_fields[0] = 0;
758 vesa_vmode[modes].vi_pixel_fields[1] = 0;
759 vesa_vmode[modes].vi_pixel_fields[2] = 0;
760 vesa_vmode[modes].vi_pixel_fields[3] = 0;
761 vesa_vmode[modes].vi_pixel_fsizes[0] = 0;
762 vesa_vmode[modes].vi_pixel_fsizes[1] = 0;
763 vesa_vmode[modes].vi_pixel_fsizes[2] = 0;
764 vesa_vmode[modes].vi_pixel_fsizes[3] = 0;
765 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) {
766 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
767 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) {
768 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
769 vesa_vmode[modes].vi_pixel_fields[0]
770 = vmode.v_redfieldpos;
771 vesa_vmode[modes].vi_pixel_fields[1]
772 = vmode.v_greenfieldpos;
773 vesa_vmode[modes].vi_pixel_fields[2]
774 = vmode.v_bluefieldpos;
775 vesa_vmode[modes].vi_pixel_fields[3]
776 = vmode.v_resfieldpos;
777 vesa_vmode[modes].vi_pixel_fsizes[0]
778 = vmode.v_redmasksize;
779 vesa_vmode[modes].vi_pixel_fsizes[1]
780 = vmode.v_greenmasksize;
781 vesa_vmode[modes].vi_pixel_fsizes[2]
782 = vmode.v_bluemasksize;
783 vesa_vmode[modes].vi_pixel_fsizes[3]
784 = vmode.v_resmasksize;
786 vesa_vmode[modes].vi_pixel_size = 0;
789 vesa_vmode[modes].vi_flags
790 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
793 vesa_vmode[modes].vi_mode = EOT;
795 printf("VESA: %d mode(s) found\n", modes);
797 has_vesa_bios = (modes > 0);
798 return (has_vesa_bios ? 0 : 1);
802 vesa_clear_modes(video_info_t *info, int color)
804 while (info->vi_mode != EOT) {
805 if ((info->vi_flags & V_INFO_COLOR) != color)
812 vesa_map_buffer(u_int paddr, size_t size)
817 off = paddr - trunc_page(paddr);
818 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
820 printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n",
821 paddr, vaddr, size, off);
823 return (vaddr + off);
827 vesa_unmap_buffer(vm_offset_t vaddr, size_t size)
830 printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size);
832 kmem_free(kernel_map, vaddr, size);
838 vesa_configure(int flags)
840 video_adapter_t *adp;
847 if (flags & VIO_PROBE_ONLY)
851 * If the VESA module has already been loaded, abort loading
852 * the module this time.
854 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
855 if (adp->va_flags & V_ADP_VESA)
857 if (adp->va_type == KD_VGA)
861 * The VGA adapter is not found. This is because either
862 * 1) the VGA driver has not been initialized, or 2) the VGA card
863 * is not present. If 1) is the case, we shall defer
864 * initialization for now and try again later.
867 vga_sub_configure = vesa_configure;
871 /* count number of registered adapters */
872 for (++i; vid_get_adapter(i) != NULL; ++i)
878 if (vesa_bios_init()) {
882 vesa_adp->va_flags |= V_ADP_VESA;
884 /* remove conflicting modes if we have more than one adapter */
886 vesa_clear_modes(vesa_vmode,
887 (vesa_adp->va_flags & V_ADP_COLOR) ?
891 if ((error = vesa_load_ioctl()) == 0) {
892 prevvidsw = vidsw[vesa_adp->va_index];
893 vidsw[vesa_adp->va_index] = &vesavidsw;
894 vesa_init_done = TRUE;
918 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
920 return (*prevvidsw->probe)(unit, adpp, arg, flags);
924 vesa_init(int unit, video_adapter_t *adp, int flags)
926 return (*prevvidsw->init)(unit, adp, flags);
930 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
934 if ((*prevvidsw->get_info)(adp, mode, info) == 0)
940 mode = vesa_map_gen_mode_num(vesa_adp->va_type,
941 vesa_adp->va_flags & V_ADP_COLOR, mode);
942 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
943 if (vesa_vmode[i].vi_mode == NA)
945 if (vesa_vmode[i].vi_mode == mode) {
946 *info = vesa_vmode[i];
954 vesa_query_mode(video_adapter_t *adp, video_info_t *info)
958 if ((*prevvidsw->query_mode)(adp, info) == 0)
963 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
964 if ((info->vi_width != 0)
965 && (info->vi_width != vesa_vmode[i].vi_width))
967 if ((info->vi_height != 0)
968 && (info->vi_height != vesa_vmode[i].vi_height))
970 if ((info->vi_cwidth != 0)
971 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
973 if ((info->vi_cheight != 0)
974 && (info->vi_cheight != vesa_vmode[i].vi_cheight))
976 if ((info->vi_depth != 0)
977 && (info->vi_depth != vesa_vmode[i].vi_depth))
979 if ((info->vi_planes != 0)
980 && (info->vi_planes != vesa_vmode[i].vi_planes))
982 /* pixel format, memory model */
983 if ((info->vi_flags != 0)
984 && (info->vi_flags != vesa_vmode[i].vi_flags))
986 *info = vesa_vmode[i];
993 vesa_set_mode(video_adapter_t *adp, int mode)
999 return (*prevvidsw->set_mode)(adp, mode);
1001 mode = vesa_map_gen_mode_num(adp->va_type,
1002 adp->va_flags & V_ADP_COLOR, mode);
1004 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
1005 adp->va_mode, adp->va_mode, mode, mode);
1008 * If the current mode is a VESA mode and the new mode is not,
1009 * restore the state of the adapter first by setting one of the
1010 * standard VGA mode, so that non-standard, extended SVGA registers
1011 * are set to the state compatible with the standard VGA modes.
1012 * Otherwise (*prevvidsw->set_mode)() may not be able to set up
1013 * the new mode correctly.
1015 if (VESA_MODE(adp->va_mode)) {
1016 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) {
1017 int10_set_mode(adp->va_initial_bios_mode);
1018 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1019 vesa_unmap_buffer(adp->va_buffer,
1020 vesa_adp_info->v_memsize*64*1024);
1022 * Once (*prevvidsw->get_info)() succeeded,
1023 * (*prevvidsw->set_mode)() below won't fail...
1028 /* we may not need to handle this mode after all... */
1029 if ((*prevvidsw->set_mode)(adp, mode) == 0)
1032 /* is the new mode supported? */
1033 if (vesa_get_info(adp, mode, &info))
1035 /* assert(VESA_MODE(mode)); */
1038 printf("VESA: about to set a VESA mode...\n");
1040 /* don't use the linear frame buffer for text modes. XXX */
1041 if (!(info.vi_flags & V_INFO_GRAPHICS))
1042 info.vi_flags &= ~V_INFO_LINEAR;
1044 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0)))
1047 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1048 vesa_unmap_buffer(adp->va_buffer,
1049 vesa_adp_info->v_memsize*64*1024);
1052 printf("VESA: mode set!\n");
1054 vesa_adp->va_mode = mode;
1055 vesa_adp->va_flags &= ~V_ADP_COLOR;
1056 vesa_adp->va_flags |=
1057 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
1058 vesa_adp->va_crtc_addr =
1059 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
1060 if (info.vi_flags & V_INFO_LINEAR) {
1062 printf("VESA: setting up LFB\n");
1064 vesa_adp->va_buffer =
1065 vesa_map_buffer(info.vi_buffer,
1066 vesa_adp_info->v_memsize*64*1024);
1067 vesa_adp->va_buffer_size = info.vi_buffer_size;
1068 vesa_adp->va_window = vesa_adp->va_buffer;
1069 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes;
1070 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes;
1072 vesa_adp->va_buffer = 0;
1073 vesa_adp->va_buffer_size = info.vi_buffer_size;
1074 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window);
1075 vesa_adp->va_window_size = info.vi_window_size;
1076 vesa_adp->va_window_gran = info.vi_window_gran;
1078 vesa_adp->va_window_orig = 0;
1079 len = vesa_bios_get_line_length();
1081 vesa_adp->va_line_width = len;
1082 } else if (info.vi_flags & V_INFO_GRAPHICS) {
1083 switch (info.vi_depth/info.vi_planes) {
1085 vesa_adp->va_line_width = info.vi_width/8;
1088 vesa_adp->va_line_width = info.vi_width/4;
1091 vesa_adp->va_line_width = info.vi_width/2;
1094 default: /* shouldn't happen */
1095 vesa_adp->va_line_width = info.vi_width;
1099 vesa_adp->va_line_width = info.vi_width;
1101 vesa_adp->va_disp_start.x = 0;
1102 vesa_adp->va_disp_start.y = 0;
1104 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n",
1105 info.vi_width, len, vesa_adp->va_line_width);
1107 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
1109 /* move hardware cursor out of the way */
1110 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
1116 vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1119 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count);
1123 vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1126 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count);
1130 vesa_show_font(video_adapter_t *adp, int page)
1132 return (*prevvidsw->show_font)(adp, page);
1136 vesa_save_palette(video_adapter_t *adp, u_char *palette)
1141 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1142 && VESA_MODE(adp->va_mode)) {
1143 bits = vesa_bios_get_dac();
1144 error = vesa_bios_save_palette(0, 256, palette, bits);
1151 return (*prevvidsw->save_palette)(adp, palette);
1155 vesa_load_palette(video_adapter_t *adp, const u_char *palette)
1161 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1162 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) {
1163 error = vesa_bios_load_palette(0, 256, palette, bits);
1166 if (vesa_bios_set_dac(6) != 6)
1171 return (*prevvidsw->load_palette)(adp, palette);
1175 vesa_set_border(video_adapter_t *adp, int color)
1177 return (*prevvidsw->set_border)(adp, color);
1181 vesa_save_state(video_adapter_t *adp, void *p, size_t size)
1183 if (adp != vesa_adp)
1184 return (*prevvidsw->save_state)(adp, p, size);
1186 if (vesa_state_buf_size == 0)
1187 vesa_state_buf_size = vesa_bios_state_buf_size();
1189 return (sizeof(int) + vesa_state_buf_size);
1190 else if (size < (sizeof(int) + vesa_state_buf_size))
1193 ((adp_state_t *)p)->sig = V_STATE_SIG;
1194 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
1195 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs,
1196 vesa_state_buf_size);
1200 vesa_load_state(video_adapter_t *adp, void *p)
1202 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG))
1203 return (*prevvidsw->load_state)(adp, p);
1205 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
1206 vesa_state_buf_size);
1211 vesa_get_origin(video_adapter_t *adp, off_t *offset)
1213 struct vm86frame vmf;
1216 bzero(&vmf, sizeof(vmf));
1217 vmf.vmf_eax = 0x4f05;
1218 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */
1219 err = vm86_intcall(0x10, &vmf);
1220 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1222 *offset = vmf.vmf_dx*adp->va_window_gran;
1228 vesa_set_origin(video_adapter_t *adp, off_t offset)
1230 struct vm86frame vmf;
1234 * This function should return as quickly as possible to
1235 * maintain good performance of the system. For this reason,
1236 * error checking is kept minimal and let the VESA BIOS to
1239 if (adp != vesa_adp)
1240 return (*prevvidsw->set_win_org)(adp, offset);
1242 /* if this is a linear frame buffer, do nothing */
1243 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1246 if (adp->va_window_gran == 0)
1249 bzero(&vmf, sizeof(vmf));
1250 vmf.vmf_eax = 0x4f05;
1251 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */
1252 vmf.vmf_edx = offset/adp->va_window_gran;
1253 err = vm86_intcall(0x10, &vmf);
1254 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1256 bzero(&vmf, sizeof(vmf));
1257 vmf.vmf_eax = 0x4f05;
1258 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */
1259 vmf.vmf_edx = offset/adp->va_window_gran;
1260 err = vm86_intcall(0x10, &vmf);
1261 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran;
1266 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1268 return (*prevvidsw->read_hw_cursor)(adp, col, row);
1272 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
1274 return (*prevvidsw->set_hw_cursor)(adp, col, row);
1278 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1279 int celsize, int blink)
1281 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
1286 vesa_blank_display(video_adapter_t *adp, int mode)
1288 /* XXX: use VESA DPMS */
1289 return (*prevvidsw->blank_display)(adp, mode);
1293 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, int prot)
1296 printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n",
1297 adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
1300 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) {
1301 /* va_window_size == va_buffer_size/vi_planes */
1302 /* XXX: is this correct? */
1303 if (offset > adp->va_window_size - PAGE_SIZE)
1306 return i386_btop(adp->va_info.vi_buffer + offset);
1308 #ifdef __alpha__ /* XXX */
1309 return alpha_btop(adp->va_info.vi_buffer + offset);
1312 return (*prevvidsw->mmap)(adp, offset, prot);
1317 vesa_clear(video_adapter_t *adp)
1319 return (*prevvidsw->clear)(adp);
1323 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1325 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
1329 vesa_bitblt(video_adapter_t *adp,...)
1336 get_palette(video_adapter_t *adp, int base, int count,
1337 u_char *red, u_char *green, u_char *blue, u_char *trans)
1345 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256))
1347 if ((base + count) > 256)
1349 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode))
1352 bits = vesa_bios_get_dac();
1356 r = malloc(count*3, M_DEVBUF, M_WAITOK);
1359 error = vesa_bios_save_palette2(base, count, r, g, b, bits);
1361 copyout(r, red, count);
1362 copyout(g, green, count);
1363 copyout(b, blue, count);
1364 if (trans != NULL) {
1366 copyout(r, trans, count);
1371 /* if error && bits != 6 at this point, we are in in trouble... XXX */
1376 set_palette(video_adapter_t *adp, int base, int count,
1377 u_char *red, u_char *green, u_char *blue, u_char *trans)
1387 if ((base < 0) || (base >= 256) || (base + count > 256))
1389 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)
1390 || ((bits = vesa_bios_set_dac(8)) <= 6))
1393 r = malloc(count*3, M_DEVBUF, M_WAITOK);
1396 copyin(red, r, count);
1397 copyin(green, g, count);
1398 copyin(blue, b, count);
1400 error = vesa_bios_load_palette2(base, count, r, g, b, bits);
1405 /* if the following call fails, we are in trouble... XXX */
1406 vesa_bios_set_dac(6);
1412 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1416 if (adp != vesa_adp)
1417 return (*prevvidsw->ioctl)(adp, cmd, arg);
1420 case FBIO_SETWINORG: /* set frame buffer window origin */
1421 if (!VESA_MODE(adp->va_mode))
1422 return (*prevvidsw->ioctl)(adp, cmd, arg);
1423 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
1425 case FBIO_SETDISPSTART: /* set display start address */
1426 if (!VESA_MODE(adp->va_mode))
1427 return (*prevvidsw->ioctl)(adp, cmd, arg);
1428 if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
1429 ((video_display_start_t *)arg)->y))
1431 adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
1432 adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
1435 case FBIO_SETLINEWIDTH: /* set line length in pixel */
1436 if (!VESA_MODE(adp->va_mode))
1437 return (*prevvidsw->ioctl)(adp, cmd, arg);
1438 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
1440 adp->va_line_width = bytes;
1442 printf("new line width:%d\n", adp->va_line_width);
1446 case FBIO_GETPALETTE: /* get color palette */
1447 if (get_palette(adp, ((video_color_palette_t *)arg)->index,
1448 ((video_color_palette_t *)arg)->count,
1449 ((video_color_palette_t *)arg)->red,
1450 ((video_color_palette_t *)arg)->green,
1451 ((video_color_palette_t *)arg)->blue,
1452 ((video_color_palette_t *)arg)->transparent))
1453 return (*prevvidsw->ioctl)(adp, cmd, arg);
1457 case FBIO_SETPALETTE: /* set color palette */
1458 if (set_palette(adp, ((video_color_palette_t *)arg)->index,
1459 ((video_color_palette_t *)arg)->count,
1460 ((video_color_palette_t *)arg)->red,
1461 ((video_color_palette_t *)arg)->green,
1462 ((video_color_palette_t *)arg)->blue,
1463 ((video_color_palette_t *)arg)->transparent))
1464 return (*prevvidsw->ioctl)(adp, cmd, arg);
1467 case FBIOGETCMAP: /* get color palette */
1468 if (get_palette(adp, ((struct fbcmap *)arg)->index,
1469 ((struct fbcmap *)arg)->count,
1470 ((struct fbcmap *)arg)->red,
1471 ((struct fbcmap *)arg)->green,
1472 ((struct fbcmap *)arg)->blue, NULL))
1473 return (*prevvidsw->ioctl)(adp, cmd, arg);
1476 case FBIOPUTCMAP: /* set color palette */
1477 if (set_palette(adp, ((struct fbcmap *)arg)->index,
1478 ((struct fbcmap *)arg)->count,
1479 ((struct fbcmap *)arg)->red,
1480 ((struct fbcmap *)arg)->green,
1481 ((struct fbcmap *)arg)->blue, NULL))
1482 return (*prevvidsw->ioctl)(adp, cmd, arg);
1486 return (*prevvidsw->ioctl)(adp, cmd, arg);
1491 vesa_diag(video_adapter_t *adp, int level)
1495 /* call the previous handler first */
1496 error = (*prevvidsw->diag)(adp, level);
1500 if (adp != vesa_adp)
1510 vesa_bios_info(int level)
1513 struct vesa_mode vmode;
1518 /* general adapter information */
1519 printf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
1520 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 +
1521 ((vesa_adp_info->v_version & 0x0f00) >> 8),
1522 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 +
1523 (vesa_adp_info->v_version & 0x000f),
1524 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
1525 vesa_vmodetab, vesa_adp_info->v_modetable);
1528 if (vesa_oemstr != NULL)
1529 printf("VESA: %s\n", vesa_oemstr);
1535 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) {
1536 /* vender name, product name, product revision */
1537 printf("VESA: %s %s %s\n",
1538 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown",
1539 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
1540 (vesa_revstr != NULL) ? vesa_revstr : "?");
1544 /* mode information */
1546 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
1547 && (vesa_vmodetab[i] != 0xffff); ++i) {
1548 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
1551 /* print something for diagnostic purpose */
1552 printf("VESA: mode:0x%03x, flags:0x%04x",
1553 vesa_vmodetab[i], vmode.v_modeattr);
1554 if (vmode.v_modeattr & V_MODEOPTINFO) {
1555 if (vmode.v_modeattr & V_MODEGRAPHICS) {
1556 printf(", G %dx%dx%d %d, ",
1557 vmode.v_width, vmode.v_height,
1558 vmode.v_bpp, vmode.v_planes);
1560 printf(", T %dx%d, ",
1561 vmode.v_width, vmode.v_height);
1563 printf("font:%dx%d, ",
1564 vmode.v_cwidth, vmode.v_cheight);
1565 printf("pages:%d, mem:%d",
1566 vmode.v_ipages + 1, vmode.v_memmodel);
1568 if (vmode.v_modeattr & V_MODELFB) {
1569 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
1570 vmode.v_lfb, vmode.v_offscreen,
1571 vmode.v_offscreensize*1024);
1574 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
1575 vmode.v_waseg, vmode.v_waattr,
1576 vmode.v_wbseg, vmode.v_wbattr);
1577 printf("size:%dk, gran:%dk\n",
1578 vmode.v_wsize, vmode.v_wgran);
1580 #endif /* VESA_DEBUG > 1 */
1585 /* module loading */
1596 /* locate a VGA adapter */
1599 error = vesa_configure(0);
1603 vesa_bios_info(bootverbose);
1611 u_char palette[256*3];
1616 /* if the adapter is currently in a VESA mode, don't unload */
1617 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
1620 * FIXME: if there is at least one vty which is in a VESA mode,
1621 * we shouldn't be unloading! XXX
1625 if ((error = vesa_unload_ioctl()) == 0) {
1626 if (vesa_adp != NULL) {
1627 if (vesa_adp_info->v_flags & V_DAC8) {
1628 bits = vesa_bios_get_dac();
1630 vesa_bios_save_palette(0, 256,
1632 vesa_bios_set_dac(6);
1633 vesa_bios_load_palette(0, 256,
1637 vesa_adp->va_flags &= ~V_ADP_VESA;
1638 vidsw[vesa_adp->va_index] = prevvidsw;
1647 vesa_mod_event(module_t mod, int type, void *data)
1653 return vesa_unload();
1660 static moduledata_t vesa_mod = {
1666 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1668 #endif /* VGA_NO_MODE_CHANGE */