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 1.11 2005/07/10 13:06:18 swildner 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>
41 #include <sys/thread2.h>
44 #include <vm/vm_extern.h>
45 #include <vm/vm_kern.h>
48 #include <machine/md_var.h>
49 #include <machine/vm86.h>
50 #include <machine/pc/bios.h>
51 #include <machine/pc/vesa.h>
53 #include <dev/video/fb/fbreg.h>
54 #include <dev/video/fb/vgareg.h>
57 #include <bus/isa/isareg.h>
59 #include <bus/isa/i386/isa.h>
62 #define VESA_VIA_CLE266 "VIA CLE266\r\n"
68 /* VESA video adapter state buffer stub */
71 #define V_STATE_SIG 0x61736576
74 typedef struct adp_state adp_state_t;
76 /* VESA video adapter */
77 static video_adapter_t *vesa_adp = NULL;
78 static int vesa_state_buf_size = 0;
79 #define VESA_VM86_BUFSIZE (3 * PAGE_SIZE)
80 static void *vesa_vm86_buf;
84 static int vesa_nop(void);
86 static int vesa_error(void);
87 static vi_probe_t vesa_probe;
88 static vi_init_t vesa_init;
89 static vi_get_info_t vesa_get_info;
90 static vi_query_mode_t vesa_query_mode;
91 static vi_set_mode_t vesa_set_mode;
92 static vi_save_font_t vesa_save_font;
93 static vi_load_font_t vesa_load_font;
94 static vi_show_font_t vesa_show_font;
95 static vi_save_palette_t vesa_save_palette;
96 static vi_load_palette_t vesa_load_palette;
97 static vi_set_border_t vesa_set_border;
98 static vi_save_state_t vesa_save_state;
99 static vi_load_state_t vesa_load_state;
100 static vi_set_win_org_t vesa_set_origin;
101 static vi_read_hw_cursor_t vesa_read_hw_cursor;
102 static vi_set_hw_cursor_t vesa_set_hw_cursor;
103 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
104 static vi_blank_display_t vesa_blank_display;
105 static vi_mmap_t vesa_mmap;
106 static vi_ioctl_t vesa_ioctl;
107 static vi_clear_t vesa_clear;
108 static vi_fill_rect_t vesa_fill_rect;
109 static vi_bitblt_t vesa_bitblt;
110 static vi_diag_t vesa_diag;
111 static int vesa_bios_info(int level);
112 static struct vm86context vesa_vmcontext;
114 static video_switch_t vesavidsw = {
131 vesa_set_hw_cursor_shape,
143 static video_switch_t *prevvidsw;
145 /* VESA BIOS video modes */
146 #define VESA_MAXMODES 64
150 #define MODE_TABLE_DELTA 8
152 static int vesa_vmode_max = 0;
153 static video_info_t vesa_vmode_empty = { EOT };
154 static video_info_t *vesa_vmode = &vesa_vmode_empty;
156 static int vesa_init_done = FALSE;
157 static int has_vesa_bios = FALSE;
158 static struct vesa_info *vesa_adp_info = NULL;
159 static uint16_t *vesa_vmodetab = NULL;
160 static char *vesa_oemstr = NULL;
161 static char *vesa_vendorstr = NULL;
162 static char *vesa_prodstr = NULL;
163 static char *vesa_revstr = NULL;
165 /* local macros and functions */
166 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
168 static int int10_set_mode(int mode);
169 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
170 static int vesa_bios_set_mode(int mode);
171 static int vesa_bios_get_dac(void);
172 static int vesa_bios_set_dac(int bits);
173 static int vesa_bios_save_palette(int start, int colors, u_char *palette,
175 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
176 u_char *b, int bits);
177 static int vesa_bios_load_palette(int start, int colors, const u_char *palette,
180 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
181 u_char *b, int bits);
186 #define STATE_HW (1<<0)
187 #define STATE_DATA (1<<1)
188 #define STATE_DAC (1<<2)
189 #define STATE_REG (1<<3)
190 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG)
191 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
192 static int vesa_bios_state_buf_size(void);
193 static int vesa_bios_save_restore(int code, void *p, size_t size);
194 static int vesa_bios_get_line_length(void);
195 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
197 static int vesa_bios_get_start(int *x, int *y);
199 static int vesa_bios_set_start(int x, int y);
200 static int vesa_map_gen_mode_num(int type, int color, int mode);
201 static int vesa_translate_flags(uint16_t vflags);
202 static int vesa_translate_mmodel(uint8_t vmodel);
203 static void *vesa_fix_ptr(uint32_t p, uint16_t seg, uint16_t off,
205 static int vesa_bios_init(void);
206 static void vesa_clear_modes(video_info_t *info, int color);
207 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size);
208 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size);
211 static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
215 dump_buffer(u_char *buf, size_t len)
219 for (i = 0; i < len;) {
220 printf("%02x ", buf[i]);
226 /* INT 10 BIOS calls */
228 int10_set_mode(int mode)
230 struct vm86frame vmf;
232 bzero(&vmf, sizeof(vmf));
233 vmf.vmf_eax = 0x0000 | mode;
234 vm86_intcall(0x10, &vmf);
238 /* VESA BIOS calls */
240 vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
242 struct vm86frame vmf;
246 bzero(&vmf, sizeof(vmf));
247 vmf.vmf_eax = 0x4f01;
250 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
252 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
253 if ((err != 0) || (vmf.vmf_ax != 0x4f))
255 bcopy(buf, vmode, sizeof(*vmode));
260 vesa_bios_set_mode(int mode)
262 struct vm86frame vmf;
265 bzero(&vmf, sizeof(vmf));
266 vmf.vmf_eax = 0x4f02;
268 err = vm86_intcall(0x10, &vmf);
269 return ((err != 0) || (vmf.vmf_ax != 0x4f));
273 vesa_bios_get_dac(void)
275 struct vm86frame vmf;
278 bzero(&vmf, sizeof(vmf));
279 vmf.vmf_eax = 0x4f08;
280 vmf.vmf_ebx = 1; /* get DAC width */
281 err = vm86_intcall(0x10, &vmf);
282 if ((err != 0) || (vmf.vmf_ax != 0x4f))
284 return ((vmf.vmf_ebx >> 8) & 0x00ff);
288 vesa_bios_set_dac(int bits)
290 struct vm86frame vmf;
293 bzero(&vmf, sizeof(vmf));
294 vmf.vmf_eax = 0x4f08;
295 vmf.vmf_ebx = (bits << 8);
296 err = vm86_intcall(0x10, &vmf);
297 if ((err != 0) || (vmf.vmf_ax != 0x4f))
299 return ((vmf.vmf_ebx >> 8) & 0x00ff);
303 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
305 struct vm86frame vmf;
310 bzero(&vmf, sizeof(vmf));
311 vmf.vmf_eax = 0x4f09;
312 vmf.vmf_ebx = 1; /* get primary palette data */
313 vmf.vmf_ecx = colors;
316 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
318 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
319 if ((err != 0) || (vmf.vmf_ax != 0x4f))
323 for (i = 0; i < colors; ++i) {
324 palette[i*3] = p[i*4 + 2] << bits;
325 palette[i*3 + 1] = p[i*4 + 1] << bits;
326 palette[i*3 + 2] = p[i*4] << bits;
332 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
335 struct vm86frame vmf;
340 bzero(&vmf, sizeof(vmf));
341 vmf.vmf_eax = 0x4f09;
342 vmf.vmf_ebx = 1; /* get primary palette data */
343 vmf.vmf_ecx = colors;
346 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
348 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
349 if ((err != 0) || (vmf.vmf_ax != 0x4f))
353 for (i = 0; i < colors; ++i) {
354 r[i] = p[i*4 + 2] << bits;
355 g[i] = p[i*4 + 1] << bits;
356 b[i] = p[i*4] << bits;
362 vesa_bios_load_palette(int start, int colors, const u_char *palette, int bits)
364 struct vm86frame vmf;
371 for (i = 0; i < colors; ++i) {
372 p[i*4] = palette[i*3 + 2] >> bits;
373 p[i*4 + 1] = palette[i*3 + 1] >> bits;
374 p[i*4 + 2] = palette[i*3] >> bits;
378 bzero(&vmf, sizeof(vmf));
379 vmf.vmf_eax = 0x4f09;
380 vmf.vmf_ebx = 0; /* set primary palette data */
381 vmf.vmf_ecx = colors;
383 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
385 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
386 return ((err != 0) || (vmf.vmf_ax != 0x4f));
391 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
394 struct vm86frame vmf;
401 for (i = 0; i < colors; ++i) {
402 p[i*4] = b[i] >> bits;
403 p[i*4 + 1] = g[i] >> bits;
404 p[i*4 + 2] = r[i] >> bits;
408 bzero(&vmf, sizeof(vmf));
409 vmf.vmf_eax = 0x4f09;
410 vmf.vmf_ebx = 0; /* set primary palette data */
411 vmf.vmf_ecx = colors;
413 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
415 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
416 return ((err != 0) || (vmf.vmf_ax != 0x4f));
421 vesa_bios_state_buf_size(void)
423 struct vm86frame vmf;
426 bzero(&vmf, sizeof(vmf));
427 vmf.vmf_eax = 0x4f04;
428 vmf.vmf_ecx = STATE_ALL;
429 vmf.vmf_edx = STATE_SIZE;
430 err = vm86_intcall(0x10, &vmf);
431 if ((err != 0) || (vmf.vmf_ax != 0x4f))
433 return vmf.vmf_bx*64;
437 vesa_bios_save_restore(int code, void *p, size_t size)
439 struct vm86frame vmf;
443 if (size > VESA_VM86_BUFSIZE)
446 bzero(&vmf, sizeof(vmf));
447 vmf.vmf_eax = 0x4f04;
448 vmf.vmf_ecx = STATE_ALL;
449 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
451 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
454 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
456 return ((err != 0) || (vmf.vmf_ax != 0x4f));
460 vesa_bios_get_line_length(void)
462 struct vm86frame vmf;
465 bzero(&vmf, sizeof(vmf));
466 vmf.vmf_eax = 0x4f06;
467 vmf.vmf_ebx = 1; /* get scan line length */
468 err = vm86_intcall(0x10, &vmf);
469 if ((err != 0) || (vmf.vmf_ax != 0x4f))
471 return vmf.vmf_bx; /* line length in bytes */
475 vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
477 struct vm86frame vmf;
480 bzero(&vmf, sizeof(vmf));
481 vmf.vmf_eax = 0x4f06;
482 vmf.vmf_ebx = 0; /* set scan line length in pixel */
484 err = vm86_intcall(0x10, &vmf);
486 printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx);
488 if ((err != 0) || (vmf.vmf_ax != 0x4f))
499 vesa_bios_get_start(int *x, int *y)
501 struct vm86frame vmf;
504 bzero(&vmf, sizeof(vmf));
505 vmf.vmf_eax = 0x4f07;
506 vmf.vmf_ebx = 1; /* get display start */
507 err = vm86_intcall(0x10, &vmf);
508 if ((err != 0) || (vmf.vmf_ax != 0x4f))
517 vesa_bios_set_start(int x, int y)
519 struct vm86frame vmf;
522 bzero(&vmf, sizeof(vmf));
523 vmf.vmf_eax = 0x4f07;
524 vmf.vmf_ebx = 0x80; /* set display start */
527 err = vm86_intcall(0x10, &vmf);
528 return ((err != 0) || (vmf.vmf_ax != 0x4f));
531 /* map a generic video mode to a known mode */
533 vesa_map_gen_mode_num(int type, int color, int mode)
539 { M_TEXT_132x25, M_VESA_C132x25 },
540 { M_TEXT_132x43, M_VESA_C132x43 },
541 { M_TEXT_132x50, M_VESA_C132x50 },
542 { M_TEXT_132x60, M_VESA_C132x60 },
546 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
547 if (mode_map[i].from == mode)
548 return mode_map[i].to;
554 vesa_translate_flags(uint16_t vflags)
561 { V_MODECOLOR, V_INFO_COLOR, 0 },
562 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
563 { V_MODELFB, V_INFO_LINEAR, 0 },
568 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
569 flags |= (vflags & ftable[i].mask) ?
570 ftable[i].set : ftable[i].reset;
576 vesa_translate_mmodel(uint8_t vmodel)
582 { V_MMTEXT, V_INFO_MM_TEXT },
583 { V_MMCGA, V_INFO_MM_CGA },
584 { V_MMHGC, V_INFO_MM_HGC },
585 { V_MMEGA, V_INFO_MM_PLANAR },
586 { V_MMPACKED, V_INFO_MM_PACKED },
587 { V_MMDIRCOLOR, V_INFO_MM_DIRECT },
591 for (i = 0; mtable[i].mmodel >= 0; ++i) {
592 if (mtable[i].vmodel == vmodel)
593 return mtable[i].mmodel;
595 return V_INFO_MM_OTHER;
599 vesa_fix_ptr(uint32_t p, uint16_t seg, uint16_t off, u_char *buf)
603 if (((p >> 16) == seg) && ((p & 0xffff) >= off))
604 return (void *)(buf + ((p & 0xffff) - off));
606 p = BIOS_SADDRTOLADDR(p);
607 return (void *)BIOS_PADDRTOVADDR(p);
614 static u_char buf[512];
615 struct vm86frame vmf;
616 struct vesa_mode vmode;
627 has_vesa_bios = FALSE;
628 vesa_adp_info = NULL;
630 vesa_vmode[0].vi_mode = EOT;
632 /* Allocate a buffer and add each page to the vm86 context. */
633 vesa_vm86_buf = malloc(VESA_VM86_BUFSIZE, M_DEVBUF, M_WAITOK | M_ZERO);
634 KASSERT(((vm_offset_t)vesa_vm86_buf & PAGE_MASK) == 0,
635 ("bad vesa_vm86_buf alignment"));
636 for (i = 0; i < howmany(VESA_VM86_BUFSIZE, PAGE_SIZE); i++)
637 vm86_addpage(&vesa_vmcontext, i + 1,
638 (vm_offset_t)vesa_vm86_buf + PAGE_SIZE * i);
640 vmbuf = vesa_vm86_buf;
641 bzero(&vmf, sizeof(vmf)); /* paranoia */
642 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
643 vmf.vmf_eax = 0x4f00;
644 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di);
646 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
647 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4))
649 bcopy(vmbuf, buf, sizeof(buf));
650 vesa_adp_info = (struct vesa_info *)buf;
652 printf("VESA: information block\n");
653 dump_buffer(buf, 64);
655 if (vesa_adp_info->v_flags & V_NONVGA)
657 if (vesa_adp_info->v_version < 0x0102) {
658 printf("VESA: VBE version %d.%d is not supported; "
659 "version 1.2 or later is required.\n",
660 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10
661 + ((vesa_adp_info->v_version & 0x0f00) >> 8),
662 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
663 + (vesa_adp_info->v_version & 0x000f));
667 /* fix string ptrs */
668 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr,
669 vmf.vmf_es, vmf.vmf_di, buf);
670 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0;
672 if (vesa_adp_info->v_version >= 0x0200) {
674 (char *)vesa_fix_ptr(vesa_adp_info->v_vendorstr,
675 vmf.vmf_es, vmf.vmf_di, buf);
677 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr,
678 vmf.vmf_es, vmf.vmf_di, buf);
680 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr,
681 vmf.vmf_es, vmf.vmf_di, buf);
684 /* obtain video mode information */
685 vesa_vmodetab = (uint16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable,
686 vmf.vmf_es, vmf.vmf_di, buf);
687 if (vesa_vmodetab == NULL)
689 for (i = 0, modes = 0;
690 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
691 && (vesa_vmodetab[i] != 0xffff); ++i) {
692 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
695 /* reject unsupported modes */
697 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO
699 != (V_MODESUPP | V_MODEOPTINFO))
702 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) {
704 printf("Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n",
705 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
706 vmode.v_width, vmode.v_height, vmode.v_bpp,
713 /* expand the array if necessary */
714 if (modes >= vesa_vmode_max) {
715 vesa_vmode_max += MODE_TABLE_DELTA;
716 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1),
719 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
720 modes, vesa_vmode_max);
723 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
724 free(vesa_vmode, M_DEVBUF);
730 printf("Found VESA %s mode: %d x %d x %d bpp\n",
731 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
732 vmode.v_width, vmode.v_height, vmode.v_bpp);
735 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) {
736 vmode.v_width &= 0xff;
737 vmode.v_waseg = 0xb8000 >> 4;
741 /* copy some fields */
742 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
743 vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
744 vesa_vmode[modes].vi_width = vmode.v_width;
745 vesa_vmode[modes].vi_height = vmode.v_height;
746 vesa_vmode[modes].vi_depth = vmode.v_bpp;
747 vesa_vmode[modes].vi_planes = vmode.v_planes;
748 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
749 vesa_vmode[modes].vi_cheight = vmode.v_cheight;
750 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4;
752 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024;
753 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024;
754 if (vmode.v_modeattr & V_MODELFB)
755 vesa_vmode[modes].vi_buffer = vmode.v_lfb;
757 vesa_vmode[modes].vi_buffer = 0;
759 vesa_vmode[modes].vi_buffer_size
760 = vesa_adp_info->v_memsize*64*1024;
762 if (vmode.v_offscreen > vmode.v_lfb)
763 vesa_vmode[modes].vi_buffer_size
764 = vmode.v_offscreen + vmode.v_offscreensize*1024
767 vesa_vmode[modes].vi_buffer_size
768 = vmode.v_offscreen + vmode.v_offscreensize*1024
770 vesa_vmode[modes].vi_mem_model
771 = vesa_translate_mmodel(vmode.v_memmodel);
772 vesa_vmode[modes].vi_pixel_fields[0] = 0;
773 vesa_vmode[modes].vi_pixel_fields[1] = 0;
774 vesa_vmode[modes].vi_pixel_fields[2] = 0;
775 vesa_vmode[modes].vi_pixel_fields[3] = 0;
776 vesa_vmode[modes].vi_pixel_fsizes[0] = 0;
777 vesa_vmode[modes].vi_pixel_fsizes[1] = 0;
778 vesa_vmode[modes].vi_pixel_fsizes[2] = 0;
779 vesa_vmode[modes].vi_pixel_fsizes[3] = 0;
780 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) {
781 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
782 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) {
783 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
784 vesa_vmode[modes].vi_pixel_fields[0]
785 = vmode.v_redfieldpos;
786 vesa_vmode[modes].vi_pixel_fields[1]
787 = vmode.v_greenfieldpos;
788 vesa_vmode[modes].vi_pixel_fields[2]
789 = vmode.v_bluefieldpos;
790 vesa_vmode[modes].vi_pixel_fields[3]
791 = vmode.v_resfieldpos;
792 vesa_vmode[modes].vi_pixel_fsizes[0]
793 = vmode.v_redmasksize;
794 vesa_vmode[modes].vi_pixel_fsizes[1]
795 = vmode.v_greenmasksize;
796 vesa_vmode[modes].vi_pixel_fsizes[2]
797 = vmode.v_bluemasksize;
798 vesa_vmode[modes].vi_pixel_fsizes[3]
799 = vmode.v_resmasksize;
801 vesa_vmode[modes].vi_pixel_size = 0;
804 vesa_vmode[modes].vi_flags
805 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
808 vesa_vmode[modes].vi_mode = EOT;
810 printf("VESA: %d mode(s) found\n", modes);
812 has_vesa_bios = (modes > 0);
820 vesa_clear_modes(video_info_t *info, int color)
822 while (info->vi_mode != EOT) {
823 if ((info->vi_flags & V_INFO_COLOR) != color)
830 vesa_map_buffer(u_int paddr, size_t size)
835 off = paddr - trunc_page(paddr);
836 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
838 printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n",
839 paddr, vaddr, size, off);
841 return (vaddr + off);
845 vesa_unmap_buffer(vm_offset_t vaddr, size_t size)
848 printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size);
850 kmem_free(kernel_map, vaddr, size);
856 vesa_configure(int flags)
858 video_adapter_t *adp;
865 if (flags & VIO_PROBE_ONLY)
869 * If the VESA module has already been loaded, abort loading
870 * the module this time.
872 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
873 if (adp->va_flags & V_ADP_VESA)
875 if (adp->va_type == KD_VGA)
879 * The VGA adapter is not found. This is because either
880 * 1) the VGA driver has not been initialized, or 2) the VGA card
881 * is not present. If 1) is the case, we shall defer
882 * initialization for now and try again later.
885 vga_sub_configure = vesa_configure;
889 /* count number of registered adapters */
890 for (++i; vid_get_adapter(i) != NULL; ++i)
896 if (vesa_bios_init()) {
900 vesa_adp->va_flags |= V_ADP_VESA;
902 /* remove conflicting modes if we have more than one adapter */
904 vesa_clear_modes(vesa_vmode,
905 (vesa_adp->va_flags & V_ADP_COLOR) ?
909 if ((error = vesa_load_ioctl()) == 0) {
910 prevvidsw = vidsw[vesa_adp->va_index];
911 vidsw[vesa_adp->va_index] = &vesavidsw;
912 vesa_init_done = TRUE;
936 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
938 return (*prevvidsw->probe)(unit, adpp, arg, flags);
942 vesa_init(int unit, video_adapter_t *adp, int flags)
944 return (*prevvidsw->init)(unit, adp, flags);
948 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
952 if ((*prevvidsw->get_info)(adp, mode, info) == 0)
958 mode = vesa_map_gen_mode_num(vesa_adp->va_type,
959 vesa_adp->va_flags & V_ADP_COLOR, mode);
960 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
961 if (vesa_vmode[i].vi_mode == NA)
963 if (vesa_vmode[i].vi_mode == mode) {
964 *info = vesa_vmode[i];
972 vesa_query_mode(video_adapter_t *adp, video_info_t *info)
976 if ((*prevvidsw->query_mode)(adp, info) == 0)
981 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
982 if ((info->vi_width != 0)
983 && (info->vi_width != vesa_vmode[i].vi_width))
985 if ((info->vi_height != 0)
986 && (info->vi_height != vesa_vmode[i].vi_height))
988 if ((info->vi_cwidth != 0)
989 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
991 if ((info->vi_cheight != 0)
992 && (info->vi_cheight != vesa_vmode[i].vi_cheight))
994 if ((info->vi_depth != 0)
995 && (info->vi_depth != vesa_vmode[i].vi_depth))
997 if ((info->vi_planes != 0)
998 && (info->vi_planes != vesa_vmode[i].vi_planes))
1000 /* pixel format, memory model */
1001 if ((info->vi_flags != 0)
1002 && (info->vi_flags != vesa_vmode[i].vi_flags))
1004 *info = vesa_vmode[i];
1011 vesa_set_mode(video_adapter_t *adp, int mode)
1016 if (adp != vesa_adp)
1017 return (*prevvidsw->set_mode)(adp, mode);
1019 mode = vesa_map_gen_mode_num(adp->va_type,
1020 adp->va_flags & V_ADP_COLOR, mode);
1022 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
1023 adp->va_mode, adp->va_mode, mode, mode);
1026 * If the current mode is a VESA mode and the new mode is not,
1027 * restore the state of the adapter first by setting one of the
1028 * standard VGA mode, so that non-standard, extended SVGA registers
1029 * are set to the state compatible with the standard VGA modes.
1030 * Otherwise (*prevvidsw->set_mode)() may not be able to set up
1031 * the new mode correctly.
1033 if (VESA_MODE(adp->va_mode)) {
1034 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) {
1035 int10_set_mode(adp->va_initial_bios_mode);
1036 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1037 vesa_unmap_buffer(adp->va_buffer,
1038 vesa_adp_info->v_memsize*64*1024);
1040 * Once (*prevvidsw->get_info)() succeeded,
1041 * (*prevvidsw->set_mode)() below won't fail...
1046 /* we may not need to handle this mode after all... */
1047 if ((*prevvidsw->set_mode)(adp, mode) == 0)
1050 /* is the new mode supported? */
1051 if (vesa_get_info(adp, mode, &info))
1053 /* assert(VESA_MODE(mode)); */
1056 printf("VESA: about to set a VESA mode...\n");
1058 /* don't use the linear frame buffer for text modes. XXX */
1059 if (!(info.vi_flags & V_INFO_GRAPHICS))
1060 info.vi_flags &= ~V_INFO_LINEAR;
1062 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0)))
1065 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1066 vesa_unmap_buffer(adp->va_buffer,
1067 vesa_adp_info->v_memsize*64*1024);
1070 printf("VESA: mode set!\n");
1072 vesa_adp->va_mode = mode;
1073 vesa_adp->va_flags &= ~V_ADP_COLOR;
1074 vesa_adp->va_flags |=
1075 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
1076 vesa_adp->va_crtc_addr =
1077 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
1078 if (info.vi_flags & V_INFO_LINEAR) {
1080 printf("VESA: setting up LFB\n");
1082 vesa_adp->va_buffer =
1083 vesa_map_buffer(info.vi_buffer,
1084 vesa_adp_info->v_memsize*64*1024);
1085 vesa_adp->va_buffer_size = info.vi_buffer_size;
1086 vesa_adp->va_window = vesa_adp->va_buffer;
1087 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes;
1088 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes;
1090 vesa_adp->va_buffer = 0;
1091 vesa_adp->va_buffer_size = info.vi_buffer_size;
1092 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window);
1093 vesa_adp->va_window_size = info.vi_window_size;
1094 vesa_adp->va_window_gran = info.vi_window_gran;
1096 vesa_adp->va_window_orig = 0;
1097 len = vesa_bios_get_line_length();
1099 vesa_adp->va_line_width = len;
1100 } else if (info.vi_flags & V_INFO_GRAPHICS) {
1101 switch (info.vi_depth/info.vi_planes) {
1103 vesa_adp->va_line_width = info.vi_width/8;
1106 vesa_adp->va_line_width = info.vi_width/4;
1109 vesa_adp->va_line_width = info.vi_width/2;
1112 default: /* shouldn't happen */
1113 vesa_adp->va_line_width = info.vi_width;
1117 vesa_adp->va_line_width = info.vi_width;
1119 vesa_adp->va_disp_start.x = 0;
1120 vesa_adp->va_disp_start.y = 0;
1122 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n",
1123 info.vi_width, len, vesa_adp->va_line_width);
1125 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
1127 /* move hardware cursor out of the way */
1128 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
1134 vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1137 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count);
1141 vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1144 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count);
1148 vesa_show_font(video_adapter_t *adp, int page)
1150 return (*prevvidsw->show_font)(adp, page);
1154 vesa_save_palette(video_adapter_t *adp, u_char *palette)
1159 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1160 && VESA_MODE(adp->va_mode)) {
1161 bits = vesa_bios_get_dac();
1162 error = vesa_bios_save_palette(0, 256, palette, bits);
1169 return (*prevvidsw->save_palette)(adp, palette);
1173 vesa_load_palette(video_adapter_t *adp, const u_char *palette)
1179 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1180 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) {
1181 error = vesa_bios_load_palette(0, 256, palette, bits);
1184 if (vesa_bios_set_dac(6) != 6)
1189 return (*prevvidsw->load_palette)(adp, palette);
1193 vesa_set_border(video_adapter_t *adp, int color)
1195 return (*prevvidsw->set_border)(adp, color);
1199 vesa_save_state(video_adapter_t *adp, void *p, size_t size)
1201 if (adp != vesa_adp)
1202 return (*prevvidsw->save_state)(adp, p, size);
1204 if (vesa_state_buf_size == 0)
1205 vesa_state_buf_size = vesa_bios_state_buf_size();
1207 return (sizeof(int) + vesa_state_buf_size);
1208 else if (size < (sizeof(int) + vesa_state_buf_size))
1211 ((adp_state_t *)p)->sig = V_STATE_SIG;
1212 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
1213 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs,
1214 vesa_state_buf_size);
1218 vesa_load_state(video_adapter_t *adp, void *p)
1220 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG))
1221 return (*prevvidsw->load_state)(adp, p);
1223 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
1224 vesa_state_buf_size);
1229 vesa_get_origin(video_adapter_t *adp, off_t *offset)
1231 struct vm86frame vmf;
1234 bzero(&vmf, sizeof(vmf));
1235 vmf.vmf_eax = 0x4f05;
1236 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */
1237 err = vm86_intcall(0x10, &vmf);
1238 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1240 *offset = vmf.vmf_dx*adp->va_window_gran;
1246 vesa_set_origin(video_adapter_t *adp, off_t offset)
1248 struct vm86frame vmf;
1252 * This function should return as quickly as possible to
1253 * maintain good performance of the system. For this reason,
1254 * error checking is kept minimal and let the VESA BIOS to
1257 if (adp != vesa_adp)
1258 return (*prevvidsw->set_win_org)(adp, offset);
1260 /* if this is a linear frame buffer, do nothing */
1261 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1264 if (adp->va_window_gran == 0)
1267 bzero(&vmf, sizeof(vmf));
1268 vmf.vmf_eax = 0x4f05;
1269 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */
1270 vmf.vmf_edx = offset/adp->va_window_gran;
1271 err = vm86_intcall(0x10, &vmf);
1272 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1274 bzero(&vmf, sizeof(vmf));
1275 vmf.vmf_eax = 0x4f05;
1276 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */
1277 vmf.vmf_edx = offset/adp->va_window_gran;
1278 err = vm86_intcall(0x10, &vmf);
1279 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran;
1284 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1286 return (*prevvidsw->read_hw_cursor)(adp, col, row);
1290 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
1292 return (*prevvidsw->set_hw_cursor)(adp, col, row);
1296 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1297 int celsize, int blink)
1299 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
1304 vesa_blank_display(video_adapter_t *adp, int mode)
1306 /* XXX: use VESA DPMS */
1307 return (*prevvidsw->blank_display)(adp, mode);
1311 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, int prot)
1314 printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n",
1315 adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
1318 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) {
1319 /* va_window_size == va_buffer_size/vi_planes */
1320 /* XXX: is this correct? */
1321 if (offset > adp->va_window_size - PAGE_SIZE)
1324 return i386_btop(adp->va_info.vi_buffer + offset);
1327 return (*prevvidsw->mmap)(adp, offset, prot);
1332 vesa_clear(video_adapter_t *adp)
1334 return (*prevvidsw->clear)(adp);
1338 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1340 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
1344 vesa_bitblt(video_adapter_t *adp,...)
1351 get_palette(video_adapter_t *adp, int base, int count,
1352 u_char *red, u_char *green, u_char *blue, u_char *trans)
1360 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256))
1362 if ((base + count) > 256)
1364 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode))
1367 bits = vesa_bios_get_dac();
1371 r = malloc(count*3, M_DEVBUF, M_WAITOK);
1374 error = vesa_bios_save_palette2(base, count, r, g, b, bits);
1376 copyout(r, red, count);
1377 copyout(g, green, count);
1378 copyout(b, blue, count);
1379 if (trans != NULL) {
1381 copyout(r, trans, count);
1386 /* if error && bits != 6 at this point, we are in in trouble... XXX */
1391 set_palette(video_adapter_t *adp, int base, int count,
1392 u_char *red, u_char *green, u_char *blue, u_char *trans)
1402 if ((base < 0) || (base >= 256) || (base + count > 256))
1404 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)
1405 || ((bits = vesa_bios_set_dac(8)) <= 6))
1408 r = malloc(count*3, M_DEVBUF, M_WAITOK);
1411 copyin(red, r, count);
1412 copyin(green, g, count);
1413 copyin(blue, b, count);
1415 error = vesa_bios_load_palette2(base, count, r, g, b, bits);
1420 /* if the following call fails, we are in trouble... XXX */
1421 vesa_bios_set_dac(6);
1427 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1431 if (adp != vesa_adp)
1432 return (*prevvidsw->ioctl)(adp, cmd, arg);
1435 case FBIO_SETWINORG: /* set frame buffer window origin */
1436 if (!VESA_MODE(adp->va_mode))
1437 return (*prevvidsw->ioctl)(adp, cmd, arg);
1438 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
1440 case FBIO_SETDISPSTART: /* set display start address */
1441 if (!VESA_MODE(adp->va_mode))
1442 return (*prevvidsw->ioctl)(adp, cmd, arg);
1443 if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
1444 ((video_display_start_t *)arg)->y))
1446 adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
1447 adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
1450 case FBIO_SETLINEWIDTH: /* set line length in pixel */
1451 if (!VESA_MODE(adp->va_mode))
1452 return (*prevvidsw->ioctl)(adp, cmd, arg);
1453 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
1455 adp->va_line_width = bytes;
1457 printf("new line width:%d\n", adp->va_line_width);
1461 case FBIO_GETPALETTE: /* get color palette */
1462 if (get_palette(adp, ((video_color_palette_t *)arg)->index,
1463 ((video_color_palette_t *)arg)->count,
1464 ((video_color_palette_t *)arg)->red,
1465 ((video_color_palette_t *)arg)->green,
1466 ((video_color_palette_t *)arg)->blue,
1467 ((video_color_palette_t *)arg)->transparent))
1468 return (*prevvidsw->ioctl)(adp, cmd, arg);
1472 case FBIO_SETPALETTE: /* set color palette */
1473 if (set_palette(adp, ((video_color_palette_t *)arg)->index,
1474 ((video_color_palette_t *)arg)->count,
1475 ((video_color_palette_t *)arg)->red,
1476 ((video_color_palette_t *)arg)->green,
1477 ((video_color_palette_t *)arg)->blue,
1478 ((video_color_palette_t *)arg)->transparent))
1479 return (*prevvidsw->ioctl)(adp, cmd, arg);
1482 case FBIOGETCMAP: /* get color palette */
1483 if (get_palette(adp, ((struct fbcmap *)arg)->index,
1484 ((struct fbcmap *)arg)->count,
1485 ((struct fbcmap *)arg)->red,
1486 ((struct fbcmap *)arg)->green,
1487 ((struct fbcmap *)arg)->blue, NULL))
1488 return (*prevvidsw->ioctl)(adp, cmd, arg);
1491 case FBIOPUTCMAP: /* set color palette */
1492 if (set_palette(adp, ((struct fbcmap *)arg)->index,
1493 ((struct fbcmap *)arg)->count,
1494 ((struct fbcmap *)arg)->red,
1495 ((struct fbcmap *)arg)->green,
1496 ((struct fbcmap *)arg)->blue, NULL))
1497 return (*prevvidsw->ioctl)(adp, cmd, arg);
1501 return (*prevvidsw->ioctl)(adp, cmd, arg);
1506 vesa_diag(video_adapter_t *adp, int level)
1510 /* call the previous handler first */
1511 error = (*prevvidsw->diag)(adp, level);
1515 if (adp != vesa_adp)
1525 vesa_bios_info(int level)
1528 struct vesa_mode vmode;
1533 /* general adapter information */
1534 printf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
1535 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 +
1536 ((vesa_adp_info->v_version & 0x0f00) >> 8),
1537 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 +
1538 (vesa_adp_info->v_version & 0x000f),
1539 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
1540 vesa_vmodetab, vesa_adp_info->v_modetable);
1543 if (vesa_oemstr != NULL)
1544 printf("VESA: %s\n", vesa_oemstr);
1550 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) {
1551 /* vendor name, product name, product revision */
1552 printf("VESA: %s %s %s\n",
1553 (vesa_vendorstr != NULL) ? vesa_vendorstr : "unknown",
1554 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
1555 (vesa_revstr != NULL) ? vesa_revstr : "?");
1559 /* mode information */
1561 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
1562 && (vesa_vmodetab[i] != 0xffff); ++i) {
1563 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
1566 /* print something for diagnostic purpose */
1567 printf("VESA: mode:0x%03x, flags:0x%04x",
1568 vesa_vmodetab[i], vmode.v_modeattr);
1569 if (vmode.v_modeattr & V_MODEOPTINFO) {
1570 if (vmode.v_modeattr & V_MODEGRAPHICS) {
1571 printf(", G %dx%dx%d %d, ",
1572 vmode.v_width, vmode.v_height,
1573 vmode.v_bpp, vmode.v_planes);
1575 printf(", T %dx%d, ",
1576 vmode.v_width, vmode.v_height);
1578 printf("font:%dx%d, ",
1579 vmode.v_cwidth, vmode.v_cheight);
1580 printf("pages:%d, mem:%d",
1581 vmode.v_ipages + 1, vmode.v_memmodel);
1583 if (vmode.v_modeattr & V_MODELFB) {
1584 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
1585 vmode.v_lfb, vmode.v_offscreen,
1586 vmode.v_offscreensize*1024);
1589 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
1590 vmode.v_waseg, vmode.v_waattr,
1591 vmode.v_wbseg, vmode.v_wbattr);
1592 printf("size:%dk, gran:%dk\n",
1593 vmode.v_wsize, vmode.v_wgran);
1595 #endif /* VESA_DEBUG > 1 */
1600 /* module loading */
1610 /* locate a VGA adapter */
1613 error = vesa_configure(0);
1617 vesa_bios_info(bootverbose);
1625 u_char palette[256*3];
1629 /* if the adapter is currently in a VESA mode, don't unload */
1630 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
1633 * FIXME: if there is at least one vty which is in a VESA mode,
1634 * we shouldn't be unloading! XXX
1638 if ((error = vesa_unload_ioctl()) == 0) {
1639 if (vesa_adp != NULL) {
1640 if (vesa_adp_info->v_flags & V_DAC8) {
1641 bits = vesa_bios_get_dac();
1643 vesa_bios_save_palette(0, 256,
1645 vesa_bios_set_dac(6);
1646 vesa_bios_load_palette(0, 256,
1650 vesa_adp->va_flags &= ~V_ADP_VESA;
1651 vidsw[vesa_adp->va_index] = prevvidsw;
1656 if (vesa_vm86_buf != NULL)
1657 free(vesa_vm86_buf, M_DEVBUF);
1663 vesa_mod_event(module_t mod, int type, void *data)
1669 return vesa_unload();
1676 static moduledata_t vesa_mod = {
1682 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1684 #endif /* VGA_NO_MODE_CHANGE */