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 1.19 2007/04/04 07:17:52 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 */
149 #define MODE_TABLE_DELTA 8
151 static int vesa_vmode_max = 0;
152 static video_info_t vesa_vmode_empty = { EOT };
153 static video_info_t *vesa_vmode = &vesa_vmode_empty;
155 static int vesa_init_done = FALSE;
156 static int has_vesa_bios = FALSE;
157 static struct vesa_info *vesa_adp_info = NULL;
158 static uint16_t *vesa_vmodetab = NULL;
159 static char *vesa_oemstr = NULL;
160 static char *vesa_vendorstr = NULL;
161 static char *vesa_prodstr = NULL;
162 static char *vesa_revstr = NULL;
164 /* local macros and functions */
165 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
167 static int int10_set_mode(int mode);
168 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
169 static int vesa_bios_set_mode(int mode);
170 static int vesa_bios_get_dac(void);
171 static int vesa_bios_set_dac(int bits);
172 static int vesa_bios_save_palette(int start, int colors, u_char *palette,
174 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
175 u_char *b, int bits);
176 static int vesa_bios_load_palette(int start, int colors, const u_char *palette,
179 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
180 u_char *b, int bits);
185 #define STATE_HW (1<<0)
186 #define STATE_DATA (1<<1)
187 #define STATE_DAC (1<<2)
188 #define STATE_REG (1<<3)
189 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG)
190 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
191 static int vesa_bios_state_buf_size(void);
192 static int vesa_bios_save_restore(int code, void *p, size_t size);
193 static int vesa_bios_get_line_length(void);
194 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
196 static int vesa_bios_get_start(int *x, int *y);
198 static int vesa_bios_set_start(int x, int y);
199 static int vesa_translate_flags(uint16_t vflags);
200 static int vesa_translate_mmodel(uint8_t vmodel);
201 static void *vesa_fix_ptr(uint32_t p, uint16_t seg, uint16_t off,
203 static int vesa_bios_init(void);
204 static void vesa_clear_modes(video_info_t *info, int color);
205 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size);
206 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size);
209 static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
213 dump_buffer(u_char *buf, size_t len)
217 for (i = 0; i < len;) {
218 kprintf("%02x ", buf[i]);
224 /* INT 10 BIOS calls */
226 int10_set_mode(int mode)
228 struct vm86frame vmf;
230 bzero(&vmf, sizeof(vmf));
231 vmf.vmf_eax = 0x0000 | mode;
232 vm86_intcall(0x10, &vmf);
236 /* VESA BIOS calls */
238 vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
240 struct vm86frame vmf;
244 bzero(&vmf, sizeof(vmf));
245 vmf.vmf_eax = 0x4f01;
248 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
250 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
251 if ((err != 0) || (vmf.vmf_ax != 0x4f))
253 bcopy(buf, vmode, sizeof(*vmode));
258 vesa_bios_set_mode(int mode)
260 struct vm86frame vmf;
263 bzero(&vmf, sizeof(vmf));
264 vmf.vmf_eax = 0x4f02;
266 err = vm86_intcall(0x10, &vmf);
267 return ((err != 0) || (vmf.vmf_ax != 0x4f));
271 vesa_bios_get_dac(void)
273 struct vm86frame vmf;
276 bzero(&vmf, sizeof(vmf));
277 vmf.vmf_eax = 0x4f08;
278 vmf.vmf_ebx = 1; /* get DAC width */
279 err = vm86_intcall(0x10, &vmf);
280 if ((err != 0) || (vmf.vmf_ax != 0x4f))
282 return ((vmf.vmf_ebx >> 8) & 0x00ff);
286 vesa_bios_set_dac(int bits)
288 struct vm86frame vmf;
291 bzero(&vmf, sizeof(vmf));
292 vmf.vmf_eax = 0x4f08;
293 vmf.vmf_ebx = (bits << 8);
294 err = vm86_intcall(0x10, &vmf);
295 if ((err != 0) || (vmf.vmf_ax != 0x4f))
297 return ((vmf.vmf_ebx >> 8) & 0x00ff);
301 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
303 struct vm86frame vmf;
308 bzero(&vmf, sizeof(vmf));
309 vmf.vmf_eax = 0x4f09;
310 vmf.vmf_ebx = 1; /* get primary palette data */
311 vmf.vmf_ecx = colors;
314 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
316 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
317 if ((err != 0) || (vmf.vmf_ax != 0x4f))
321 for (i = 0; i < colors; ++i) {
322 palette[i*3] = p[i*4 + 2] << bits;
323 palette[i*3 + 1] = p[i*4 + 1] << bits;
324 palette[i*3 + 2] = p[i*4] << bits;
330 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
333 struct vm86frame vmf;
338 bzero(&vmf, sizeof(vmf));
339 vmf.vmf_eax = 0x4f09;
340 vmf.vmf_ebx = 1; /* get primary palette data */
341 vmf.vmf_ecx = colors;
344 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
346 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
347 if ((err != 0) || (vmf.vmf_ax != 0x4f))
351 for (i = 0; i < colors; ++i) {
352 r[i] = p[i*4 + 2] << bits;
353 g[i] = p[i*4 + 1] << bits;
354 b[i] = p[i*4] << bits;
360 vesa_bios_load_palette(int start, int colors, const u_char *palette, int bits)
362 struct vm86frame vmf;
369 for (i = 0; i < colors; ++i) {
370 p[i*4] = palette[i*3 + 2] >> bits;
371 p[i*4 + 1] = palette[i*3 + 1] >> bits;
372 p[i*4 + 2] = palette[i*3] >> bits;
376 bzero(&vmf, sizeof(vmf));
377 vmf.vmf_eax = 0x4f09;
378 vmf.vmf_ebx = 0; /* set primary palette data */
379 vmf.vmf_ecx = colors;
381 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
383 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
384 return ((err != 0) || (vmf.vmf_ax != 0x4f));
389 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
392 struct vm86frame vmf;
399 for (i = 0; i < colors; ++i) {
400 p[i*4] = b[i] >> bits;
401 p[i*4 + 1] = g[i] >> bits;
402 p[i*4 + 2] = r[i] >> bits;
406 bzero(&vmf, sizeof(vmf));
407 vmf.vmf_eax = 0x4f09;
408 vmf.vmf_ebx = 0; /* set primary palette data */
409 vmf.vmf_ecx = colors;
411 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
413 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
414 return ((err != 0) || (vmf.vmf_ax != 0x4f));
419 vesa_bios_state_buf_size(void)
421 struct vm86frame vmf;
424 bzero(&vmf, sizeof(vmf));
425 vmf.vmf_eax = 0x4f04;
426 vmf.vmf_ecx = STATE_ALL;
427 vmf.vmf_edx = STATE_SIZE;
428 err = vm86_intcall(0x10, &vmf);
429 if ((err != 0) || (vmf.vmf_ax != 0x4f))
431 return vmf.vmf_bx*64;
435 vesa_bios_save_restore(int code, void *p, size_t size)
437 struct vm86frame vmf;
441 if (size > VESA_VM86_BUFSIZE)
444 bzero(&vmf, sizeof(vmf));
445 vmf.vmf_eax = 0x4f04;
446 vmf.vmf_ecx = STATE_ALL;
447 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
449 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_bx);
452 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
454 return ((err != 0) || (vmf.vmf_ax != 0x4f));
458 vesa_bios_get_line_length(void)
460 struct vm86frame vmf;
463 bzero(&vmf, sizeof(vmf));
464 vmf.vmf_eax = 0x4f06;
465 vmf.vmf_ebx = 1; /* get scan line length */
466 err = vm86_intcall(0x10, &vmf);
467 if ((err != 0) || (vmf.vmf_ax != 0x4f))
469 return vmf.vmf_bx; /* line length in bytes */
473 vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
475 struct vm86frame vmf;
478 bzero(&vmf, sizeof(vmf));
479 vmf.vmf_eax = 0x4f06;
480 vmf.vmf_ebx = 0; /* set scan line length in pixel */
482 err = vm86_intcall(0x10, &vmf);
484 kprintf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx);
486 if ((err != 0) || (vmf.vmf_ax != 0x4f))
497 vesa_bios_get_start(int *x, int *y)
499 struct vm86frame vmf;
502 bzero(&vmf, sizeof(vmf));
503 vmf.vmf_eax = 0x4f07;
504 vmf.vmf_ebx = 1; /* get display start */
505 err = vm86_intcall(0x10, &vmf);
506 if ((err != 0) || (vmf.vmf_ax != 0x4f))
515 vesa_bios_set_start(int x, int y)
517 struct vm86frame vmf;
520 bzero(&vmf, sizeof(vmf));
521 vmf.vmf_eax = 0x4f07;
522 vmf.vmf_ebx = 0x80; /* set display start */
525 err = vm86_intcall(0x10, &vmf);
526 return ((err != 0) || (vmf.vmf_ax != 0x4f));
530 vesa_translate_flags(uint16_t vflags)
537 { V_MODECOLOR, V_INFO_COLOR, 0 },
538 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
539 { V_MODELFB, V_INFO_LINEAR, 0 },
544 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
545 flags |= (vflags & ftable[i].mask) ?
546 ftable[i].set : ftable[i].reset;
552 vesa_translate_mmodel(uint8_t vmodel)
558 { V_MMTEXT, V_INFO_MM_TEXT },
559 { V_MMCGA, V_INFO_MM_CGA },
560 { V_MMHGC, V_INFO_MM_HGC },
561 { V_MMEGA, V_INFO_MM_PLANAR },
562 { V_MMPACKED, V_INFO_MM_PACKED },
563 { V_MMDIRCOLOR, V_INFO_MM_DIRECT },
567 for (i = 0; mtable[i].mmodel >= 0; ++i) {
568 if (mtable[i].vmodel == vmodel)
569 return mtable[i].mmodel;
571 return V_INFO_MM_OTHER;
575 vesa_fix_ptr(uint32_t p, uint16_t seg, uint16_t off, u_char *buf)
579 if (((p >> 16) == seg) && ((p & 0xffff) >= off))
580 return (void *)(buf + ((p & 0xffff) - off));
582 p = BIOS_SADDRTOLADDR(p);
583 return (void *)BIOS_PADDRTOVADDR(p);
590 static u_char buf[512];
591 struct vm86frame vmf;
592 struct vesa_mode vmode;
603 has_vesa_bios = FALSE;
604 vesa_adp_info = NULL;
606 vesa_vmode[0].vi_mode = EOT;
608 /* Allocate a buffer and add each page to the vm86 context. */
609 vesa_vm86_buf = kmalloc(VESA_VM86_BUFSIZE, M_DEVBUF, M_WAITOK | M_ZERO);
610 KASSERT(((vm_offset_t)vesa_vm86_buf & PAGE_MASK) == 0,
611 ("bad vesa_vm86_buf alignment"));
612 for (i = 0; i < howmany(VESA_VM86_BUFSIZE, PAGE_SIZE); i++)
613 vm86_addpage(&vesa_vmcontext, i + 1,
614 (vm_offset_t)vesa_vm86_buf + PAGE_SIZE * i);
616 vmbuf = vesa_vm86_buf;
617 bzero(&vmf, sizeof(vmf)); /* paranoia */
618 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
619 vmf.vmf_eax = 0x4f00;
620 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di);
622 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
623 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4))
625 bcopy(vmbuf, buf, sizeof(buf));
626 vesa_adp_info = (struct vesa_info *)buf;
628 kprintf("VESA: information block\n");
629 dump_buffer(buf, 64);
631 if (vesa_adp_info->v_version < 0x0102) {
632 kprintf("VESA: VBE version %d.%d is not supported; "
633 "version 1.2 or later is required.\n",
634 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10
635 + ((vesa_adp_info->v_version & 0x0f00) >> 8),
636 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
637 + (vesa_adp_info->v_version & 0x000f));
641 /* fix string ptrs */
642 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr,
643 vmf.vmf_es, vmf.vmf_di, buf);
644 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0;
646 if (vesa_adp_info->v_version >= 0x0200) {
648 (char *)vesa_fix_ptr(vesa_adp_info->v_vendorstr,
649 vmf.vmf_es, vmf.vmf_di, buf);
651 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr,
652 vmf.vmf_es, vmf.vmf_di, buf);
654 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr,
655 vmf.vmf_es, vmf.vmf_di, buf);
658 /* obtain video mode information */
659 vesa_vmodetab = (uint16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable,
660 vmf.vmf_es, vmf.vmf_di, buf);
661 if (vesa_vmodetab == NULL)
663 for (i = 0, modes = 0;
664 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
665 && (vesa_vmodetab[i] != 0xffff); ++i) {
666 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
669 /* reject unsupported modes */
671 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO
673 != (V_MODESUPP | V_MODEOPTINFO))
676 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) {
678 kprintf("Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n",
679 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
680 vmode.v_width, vmode.v_height, vmode.v_bpp,
687 /* expand the array if necessary */
688 if (modes >= vesa_vmode_max) {
689 vesa_vmode_max += MODE_TABLE_DELTA;
690 p = kmalloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1),
693 kprintf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
694 modes, vesa_vmode_max);
697 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
698 kfree(vesa_vmode, M_DEVBUF);
704 kprintf("Found VESA %s mode: %d x %d x %d bpp\n",
705 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
706 vmode.v_width, vmode.v_height, vmode.v_bpp);
709 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) {
710 vmode.v_width &= 0xff;
711 vmode.v_waseg = 0xb8000 >> 4;
715 /* copy some fields */
716 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
717 vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
718 vesa_vmode[modes].vi_width = vmode.v_width;
719 vesa_vmode[modes].vi_height = vmode.v_height;
720 vesa_vmode[modes].vi_depth = vmode.v_bpp;
721 vesa_vmode[modes].vi_planes = vmode.v_planes;
722 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
723 vesa_vmode[modes].vi_cheight = vmode.v_cheight;
724 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4;
726 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024;
727 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024;
728 if (vmode.v_modeattr & V_MODELFB)
729 vesa_vmode[modes].vi_buffer = vmode.v_lfb;
731 vesa_vmode[modes].vi_buffer = 0;
733 vesa_vmode[modes].vi_buffer_size
734 = vesa_adp_info->v_memsize*64*1024;
736 if (vmode.v_offscreen > vmode.v_lfb)
737 vesa_vmode[modes].vi_buffer_size
738 = vmode.v_offscreen + vmode.v_offscreensize*1024
741 vesa_vmode[modes].vi_buffer_size
742 = vmode.v_offscreen + vmode.v_offscreensize*1024
744 vesa_vmode[modes].vi_mem_model
745 = vesa_translate_mmodel(vmode.v_memmodel);
746 vesa_vmode[modes].vi_pixel_fields[0] = 0;
747 vesa_vmode[modes].vi_pixel_fields[1] = 0;
748 vesa_vmode[modes].vi_pixel_fields[2] = 0;
749 vesa_vmode[modes].vi_pixel_fields[3] = 0;
750 vesa_vmode[modes].vi_pixel_fsizes[0] = 0;
751 vesa_vmode[modes].vi_pixel_fsizes[1] = 0;
752 vesa_vmode[modes].vi_pixel_fsizes[2] = 0;
753 vesa_vmode[modes].vi_pixel_fsizes[3] = 0;
754 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) {
755 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
756 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) {
757 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
758 vesa_vmode[modes].vi_pixel_fields[0]
759 = vmode.v_redfieldpos;
760 vesa_vmode[modes].vi_pixel_fields[1]
761 = vmode.v_greenfieldpos;
762 vesa_vmode[modes].vi_pixel_fields[2]
763 = vmode.v_bluefieldpos;
764 vesa_vmode[modes].vi_pixel_fields[3]
765 = vmode.v_resfieldpos;
766 vesa_vmode[modes].vi_pixel_fsizes[0]
767 = vmode.v_redmasksize;
768 vesa_vmode[modes].vi_pixel_fsizes[1]
769 = vmode.v_greenmasksize;
770 vesa_vmode[modes].vi_pixel_fsizes[2]
771 = vmode.v_bluemasksize;
772 vesa_vmode[modes].vi_pixel_fsizes[3]
773 = vmode.v_resmasksize;
775 vesa_vmode[modes].vi_pixel_size = 0;
778 vesa_vmode[modes].vi_flags
779 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
782 vesa_vmode[modes].vi_mode = EOT;
784 kprintf("VESA: %d mode(s) found\n", modes);
786 has_vesa_bios = (modes > 0);
794 vesa_clear_modes(video_info_t *info, int color)
796 while (info->vi_mode != EOT) {
797 if ((info->vi_flags & V_INFO_COLOR) != color)
804 vesa_map_buffer(u_int paddr, size_t size)
809 off = paddr - trunc_page(paddr);
810 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
812 kprintf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n",
813 paddr, vaddr, size, off);
815 return (vaddr + off);
819 vesa_unmap_buffer(vm_offset_t vaddr, size_t size)
822 kprintf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size);
824 kmem_free(&kernel_map, vaddr, size);
830 vesa_configure(int flags)
832 video_adapter_t *adp;
839 if (flags & VIO_PROBE_ONLY)
843 * If the VESA module has already been loaded, abort loading
844 * the module this time.
846 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
847 if (adp->va_flags & V_ADP_VESA)
849 if (adp->va_type == KD_VGA)
853 * The VGA adapter is not found. This is because either
854 * 1) the VGA driver has not been initialized, or 2) the VGA card
855 * is not present. If 1) is the case, we shall defer
856 * initialization for now and try again later.
859 vga_sub_configure = vesa_configure;
863 /* count number of registered adapters */
864 for (++i; vid_get_adapter(i) != NULL; ++i)
870 if (vesa_bios_init()) {
874 vesa_adp->va_flags |= V_ADP_VESA;
876 /* remove conflicting modes if we have more than one adapter */
878 vesa_clear_modes(vesa_vmode,
879 (vesa_adp->va_flags & V_ADP_COLOR) ?
883 if ((error = vesa_load_ioctl()) == 0) {
884 prevvidsw = vidsw[vesa_adp->va_index];
885 vidsw[vesa_adp->va_index] = &vesavidsw;
886 vesa_init_done = TRUE;
910 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
912 return (*prevvidsw->probe)(unit, adpp, arg, flags);
916 vesa_init(int unit, video_adapter_t *adp, int flags)
918 return (*prevvidsw->init)(unit, adp, flags);
922 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
926 if ((*prevvidsw->get_info)(adp, mode, info) == 0)
932 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
933 if (vesa_vmode[i].vi_mode == NA)
935 if (vesa_vmode[i].vi_mode == mode) {
936 *info = vesa_vmode[i];
944 vesa_query_mode(video_adapter_t *adp, video_info_t *info)
948 if ((*prevvidsw->query_mode)(adp, info) == 0)
953 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
954 if ((info->vi_width != 0)
955 && (info->vi_width != vesa_vmode[i].vi_width))
957 if ((info->vi_height != 0)
958 && (info->vi_height != vesa_vmode[i].vi_height))
960 if ((info->vi_cwidth != 0)
961 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
963 if ((info->vi_cheight != 0)
964 && (info->vi_cheight != vesa_vmode[i].vi_cheight))
966 if ((info->vi_depth != 0)
967 && (info->vi_depth != vesa_vmode[i].vi_depth))
969 if ((info->vi_planes != 0)
970 && (info->vi_planes != vesa_vmode[i].vi_planes))
972 /* pixel format, memory model */
973 if ((info->vi_flags != 0)
974 && (info->vi_flags != vesa_vmode[i].vi_flags))
976 *info = vesa_vmode[i];
983 vesa_set_mode(video_adapter_t *adp, int mode)
989 return (*prevvidsw->set_mode)(adp, mode);
992 kprintf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
993 adp->va_mode, adp->va_mode, mode, mode);
996 * If the current mode is a VESA mode and the new mode is not,
997 * restore the state of the adapter first by setting one of the
998 * standard VGA mode, so that non-standard, extended SVGA registers
999 * are set to the state compatible with the standard VGA modes.
1000 * Otherwise (*prevvidsw->set_mode)() may not be able to set up
1001 * the new mode correctly.
1003 if (VESA_MODE(adp->va_mode)) {
1004 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) {
1005 int10_set_mode(adp->va_initial_bios_mode);
1006 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1007 vesa_unmap_buffer(adp->va_buffer,
1008 vesa_adp_info->v_memsize*64*1024);
1010 * Once (*prevvidsw->get_info)() succeeded,
1011 * (*prevvidsw->set_mode)() below won't fail...
1016 /* we may not need to handle this mode after all... */
1017 if ((*prevvidsw->set_mode)(adp, mode) == 0)
1020 /* is the new mode supported? */
1021 if (vesa_get_info(adp, mode, &info))
1023 /* assert(VESA_MODE(mode)); */
1026 kprintf("VESA: about to set a VESA mode...\n");
1028 /* don't use the linear frame buffer for text modes. XXX */
1029 if (!(info.vi_flags & V_INFO_GRAPHICS))
1030 info.vi_flags &= ~V_INFO_LINEAR;
1032 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0)))
1035 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1036 vesa_unmap_buffer(adp->va_buffer,
1037 vesa_adp_info->v_memsize*64*1024);
1040 kprintf("VESA: mode set!\n");
1042 vesa_adp->va_mode = mode;
1043 vesa_adp->va_flags &= ~V_ADP_COLOR;
1044 vesa_adp->va_flags |=
1045 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
1046 vesa_adp->va_crtc_addr =
1047 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
1048 if (info.vi_flags & V_INFO_LINEAR) {
1050 kprintf("VESA: setting up LFB\n");
1052 vesa_adp->va_buffer =
1053 vesa_map_buffer(info.vi_buffer,
1054 vesa_adp_info->v_memsize*64*1024);
1055 vesa_adp->va_buffer_size = info.vi_buffer_size;
1056 vesa_adp->va_window = vesa_adp->va_buffer;
1057 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes;
1058 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes;
1060 vesa_adp->va_buffer = 0;
1061 vesa_adp->va_buffer_size = info.vi_buffer_size;
1062 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window);
1063 vesa_adp->va_window_size = info.vi_window_size;
1064 vesa_adp->va_window_gran = info.vi_window_gran;
1066 vesa_adp->va_window_orig = 0;
1067 len = vesa_bios_get_line_length();
1069 vesa_adp->va_line_width = len;
1070 } else if (info.vi_flags & V_INFO_GRAPHICS) {
1071 switch (info.vi_depth/info.vi_planes) {
1073 vesa_adp->va_line_width = info.vi_width/8;
1076 vesa_adp->va_line_width = info.vi_width/4;
1079 vesa_adp->va_line_width = info.vi_width/2;
1082 default: /* shouldn't happen */
1083 vesa_adp->va_line_width = info.vi_width;
1087 vesa_adp->va_line_width = info.vi_width;
1089 vesa_adp->va_disp_start.x = 0;
1090 vesa_adp->va_disp_start.y = 0;
1092 kprintf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n",
1093 info.vi_width, len, vesa_adp->va_line_width);
1095 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
1097 /* move hardware cursor out of the way */
1098 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
1104 vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1107 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count);
1111 vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1114 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count);
1118 vesa_show_font(video_adapter_t *adp, int page)
1120 return (*prevvidsw->show_font)(adp, page);
1124 vesa_save_palette(video_adapter_t *adp, u_char *palette)
1129 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1130 && VESA_MODE(adp->va_mode)) {
1131 bits = vesa_bios_get_dac();
1132 error = vesa_bios_save_palette(0, 256, palette, bits);
1139 return (*prevvidsw->save_palette)(adp, palette);
1143 vesa_load_palette(video_adapter_t *adp, const u_char *palette)
1149 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1150 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) {
1151 error = vesa_bios_load_palette(0, 256, palette, bits);
1154 if (vesa_bios_set_dac(6) != 6)
1159 return (*prevvidsw->load_palette)(adp, palette);
1163 vesa_set_border(video_adapter_t *adp, int color)
1165 return (*prevvidsw->set_border)(adp, color);
1169 vesa_save_state(video_adapter_t *adp, void *p, size_t size)
1171 if (adp != vesa_adp)
1172 return (*prevvidsw->save_state)(adp, p, size);
1174 if (vesa_state_buf_size == 0)
1175 vesa_state_buf_size = vesa_bios_state_buf_size();
1177 return (sizeof(int) + vesa_state_buf_size);
1178 else if (size < (sizeof(int) + vesa_state_buf_size))
1181 ((adp_state_t *)p)->sig = V_STATE_SIG;
1182 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
1183 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs,
1184 vesa_state_buf_size);
1188 vesa_load_state(video_adapter_t *adp, void *p)
1190 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG))
1191 return (*prevvidsw->load_state)(adp, p);
1193 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
1194 vesa_state_buf_size);
1199 vesa_get_origin(video_adapter_t *adp, off_t *offset)
1201 struct vm86frame vmf;
1204 bzero(&vmf, sizeof(vmf));
1205 vmf.vmf_eax = 0x4f05;
1206 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */
1207 err = vm86_intcall(0x10, &vmf);
1208 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1210 *offset = vmf.vmf_dx*adp->va_window_gran;
1216 vesa_set_origin(video_adapter_t *adp, off_t offset)
1218 struct vm86frame vmf;
1222 * This function should return as quickly as possible to
1223 * maintain good performance of the system. For this reason,
1224 * error checking is kept minimal and let the VESA BIOS to
1227 if (adp != vesa_adp)
1228 return (*prevvidsw->set_win_org)(adp, offset);
1230 /* if this is a linear frame buffer, do nothing */
1231 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1234 if (adp->va_window_gran == 0)
1237 bzero(&vmf, sizeof(vmf));
1238 vmf.vmf_eax = 0x4f05;
1239 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */
1240 vmf.vmf_edx = offset/adp->va_window_gran;
1241 err = vm86_intcall(0x10, &vmf);
1242 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1244 bzero(&vmf, sizeof(vmf));
1245 vmf.vmf_eax = 0x4f05;
1246 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */
1247 vmf.vmf_edx = offset/adp->va_window_gran;
1248 err = vm86_intcall(0x10, &vmf);
1249 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran;
1254 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1256 return (*prevvidsw->read_hw_cursor)(adp, col, row);
1260 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
1262 return (*prevvidsw->set_hw_cursor)(adp, col, row);
1266 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1267 int celsize, int blink)
1269 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
1274 vesa_blank_display(video_adapter_t *adp, int mode)
1276 /* XXX: use VESA DPMS */
1277 return (*prevvidsw->blank_display)(adp, mode);
1281 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, int prot)
1284 kprintf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n",
1285 adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
1288 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) {
1289 /* va_window_size == va_buffer_size/vi_planes */
1290 /* XXX: is this correct? */
1291 if (offset > adp->va_window_size - PAGE_SIZE)
1294 return i386_btop(adp->va_info.vi_buffer + offset);
1297 return (*prevvidsw->mmap)(adp, offset, prot);
1302 vesa_clear(video_adapter_t *adp)
1304 return (*prevvidsw->clear)(adp);
1308 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1310 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
1314 vesa_bitblt(video_adapter_t *adp,...)
1321 get_palette(video_adapter_t *adp, int base, int count,
1322 u_char *red, u_char *green, u_char *blue, u_char *trans)
1330 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256))
1332 if ((base + count) > 256)
1334 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode))
1337 bits = vesa_bios_get_dac();
1341 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
1344 error = vesa_bios_save_palette2(base, count, r, g, b, bits);
1346 copyout(r, red, count);
1347 copyout(g, green, count);
1348 copyout(b, blue, count);
1349 if (trans != NULL) {
1351 copyout(r, trans, count);
1356 /* if error && bits != 6 at this point, we are in in trouble... XXX */
1361 set_palette(video_adapter_t *adp, int base, int count,
1362 u_char *red, u_char *green, u_char *blue, u_char *trans)
1372 if ((base < 0) || (base >= 256) || (base + count > 256))
1374 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)
1375 || ((bits = vesa_bios_set_dac(8)) <= 6))
1378 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
1381 copyin(red, r, count);
1382 copyin(green, g, count);
1383 copyin(blue, b, count);
1385 error = vesa_bios_load_palette2(base, count, r, g, b, bits);
1390 /* if the following call fails, we are in trouble... XXX */
1391 vesa_bios_set_dac(6);
1397 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1401 if (adp != vesa_adp)
1402 return (*prevvidsw->ioctl)(adp, cmd, arg);
1405 case FBIO_SETWINORG: /* set frame buffer window origin */
1406 if (!VESA_MODE(adp->va_mode))
1407 return (*prevvidsw->ioctl)(adp, cmd, arg);
1408 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
1410 case FBIO_SETDISPSTART: /* set display start address */
1411 if (!VESA_MODE(adp->va_mode))
1412 return (*prevvidsw->ioctl)(adp, cmd, arg);
1413 if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
1414 ((video_display_start_t *)arg)->y))
1416 adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
1417 adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
1420 case FBIO_SETLINEWIDTH: /* set line length in pixel */
1421 if (!VESA_MODE(adp->va_mode))
1422 return (*prevvidsw->ioctl)(adp, cmd, arg);
1423 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
1425 adp->va_line_width = bytes;
1427 kprintf("new line width:%d\n", adp->va_line_width);
1431 case FBIO_GETPALETTE: /* get color palette */
1432 if (get_palette(adp, ((video_color_palette_t *)arg)->index,
1433 ((video_color_palette_t *)arg)->count,
1434 ((video_color_palette_t *)arg)->red,
1435 ((video_color_palette_t *)arg)->green,
1436 ((video_color_palette_t *)arg)->blue,
1437 ((video_color_palette_t *)arg)->transparent))
1438 return (*prevvidsw->ioctl)(adp, cmd, arg);
1442 case FBIO_SETPALETTE: /* set color palette */
1443 if (set_palette(adp, ((video_color_palette_t *)arg)->index,
1444 ((video_color_palette_t *)arg)->count,
1445 ((video_color_palette_t *)arg)->red,
1446 ((video_color_palette_t *)arg)->green,
1447 ((video_color_palette_t *)arg)->blue,
1448 ((video_color_palette_t *)arg)->transparent))
1449 return (*prevvidsw->ioctl)(adp, cmd, arg);
1452 case FBIOGETCMAP: /* get color palette */
1453 if (get_palette(adp, ((struct fbcmap *)arg)->index,
1454 ((struct fbcmap *)arg)->count,
1455 ((struct fbcmap *)arg)->red,
1456 ((struct fbcmap *)arg)->green,
1457 ((struct fbcmap *)arg)->blue, NULL))
1458 return (*prevvidsw->ioctl)(adp, cmd, arg);
1461 case FBIOPUTCMAP: /* set color palette */
1462 if (set_palette(adp, ((struct fbcmap *)arg)->index,
1463 ((struct fbcmap *)arg)->count,
1464 ((struct fbcmap *)arg)->red,
1465 ((struct fbcmap *)arg)->green,
1466 ((struct fbcmap *)arg)->blue, NULL))
1467 return (*prevvidsw->ioctl)(adp, cmd, arg);
1471 return (*prevvidsw->ioctl)(adp, cmd, arg);
1476 vesa_diag(video_adapter_t *adp, int level)
1480 /* call the previous handler first */
1481 error = (*prevvidsw->diag)(adp, level);
1485 if (adp != vesa_adp)
1495 vesa_bios_info(int level)
1498 struct vesa_mode vmode;
1503 /* general adapter information */
1504 kprintf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
1505 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10 +
1506 ((vesa_adp_info->v_version & 0x0f00) >> 8),
1507 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10 +
1508 (vesa_adp_info->v_version & 0x000f),
1509 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
1510 vesa_vmodetab, vesa_adp_info->v_modetable);
1513 if (vesa_oemstr != NULL)
1514 kprintf("VESA: %s\n", vesa_oemstr);
1520 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) {
1521 /* vendor name, product name, product revision */
1522 kprintf("VESA: %s %s %s\n",
1523 (vesa_vendorstr != NULL) ? vesa_vendorstr : "unknown",
1524 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
1525 (vesa_revstr != NULL) ? vesa_revstr : "?");
1529 /* mode information */
1531 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
1532 && (vesa_vmodetab[i] != 0xffff); ++i) {
1533 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
1536 /* print something for diagnostic purpose */
1537 kprintf("VESA: mode:0x%03x, flags:0x%04x",
1538 vesa_vmodetab[i], vmode.v_modeattr);
1539 if (vmode.v_modeattr & V_MODEOPTINFO) {
1540 if (vmode.v_modeattr & V_MODEGRAPHICS) {
1541 kprintf(", G %dx%dx%d %d, ",
1542 vmode.v_width, vmode.v_height,
1543 vmode.v_bpp, vmode.v_planes);
1545 kprintf(", T %dx%d, ",
1546 vmode.v_width, vmode.v_height);
1548 kprintf("font:%dx%d, ",
1549 vmode.v_cwidth, vmode.v_cheight);
1550 kprintf("pages:%d, mem:%d",
1551 vmode.v_ipages + 1, vmode.v_memmodel);
1553 if (vmode.v_modeattr & V_MODELFB) {
1554 kprintf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
1555 vmode.v_lfb, vmode.v_offscreen,
1556 vmode.v_offscreensize*1024);
1559 kprintf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
1560 vmode.v_waseg, vmode.v_waattr,
1561 vmode.v_wbseg, vmode.v_wbattr);
1562 kprintf("size:%dk, gran:%dk\n",
1563 vmode.v_wsize, vmode.v_wgran);
1565 #endif /* VESA_DEBUG > 1 */
1570 /* module loading */
1580 /* locate a VGA adapter */
1583 error = vesa_configure(0);
1587 vesa_bios_info(bootverbose);
1595 u_char palette[256*3];
1599 /* if the adapter is currently in a VESA mode, don't unload */
1600 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
1603 * FIXME: if there is at least one vty which is in a VESA mode,
1604 * we shouldn't be unloading! XXX
1608 if ((error = vesa_unload_ioctl()) == 0) {
1609 if (vesa_adp != NULL) {
1610 if (vesa_adp_info->v_flags & V_DAC8) {
1611 bits = vesa_bios_get_dac();
1613 vesa_bios_save_palette(0, 256,
1615 vesa_bios_set_dac(6);
1616 vesa_bios_load_palette(0, 256,
1620 vesa_adp->va_flags &= ~V_ADP_VESA;
1621 vidsw[vesa_adp->va_index] = prevvidsw;
1626 if (vesa_vm86_buf != NULL)
1627 kfree(vesa_vm86_buf, M_DEVBUF);
1633 vesa_mod_event(module_t mod, int type, void *data)
1639 return vesa_unload();
1646 static moduledata_t vesa_mod = {
1652 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1654 #endif /* VGA_NO_MODE_CHANGE */