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freebsd-dev/sys/i386/isa/vesa.c
David E. O'Brien 006124d811 Use __FBSDID().
2003-06-02 16:32:55 +00:00

1652 lines
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/*-
* Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_vga.h"
#include "opt_vesa.h"
#ifndef VGA_NO_MODE_CHANGE
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/fbio.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/vm_kern.h>
#include <vm/pmap.h>
#include <machine/md_var.h>
#include <machine/vm86.h>
#include <machine/pc/bios.h>
#include <machine/pc/vesa.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/vgareg.h>
#ifndef __i386__
#include <isa/isareg.h>
#else
#include <i386/isa/isa.h>
#endif
#ifndef VESA_DEBUG
#define VESA_DEBUG 0
#endif
/* VESA video adapter state buffer stub */
struct adp_state {
int sig;
#define V_STATE_SIG 0x61736576
u_char regs[1];
};
typedef struct adp_state adp_state_t;
/* VESA video adapter */
static video_adapter_t *vesa_adp = NULL;
static int vesa_state_buf_size = 0;
/* VESA functions */
#if 0
static int vesa_nop(void);
#endif
static int vesa_error(void);
static vi_probe_t vesa_probe;
static vi_init_t vesa_init;
static vi_get_info_t vesa_get_info;
static vi_query_mode_t vesa_query_mode;
static vi_set_mode_t vesa_set_mode;
static vi_save_font_t vesa_save_font;
static vi_load_font_t vesa_load_font;
static vi_show_font_t vesa_show_font;
static vi_save_palette_t vesa_save_palette;
static vi_load_palette_t vesa_load_palette;
static vi_set_border_t vesa_set_border;
static vi_save_state_t vesa_save_state;
static vi_load_state_t vesa_load_state;
static vi_set_win_org_t vesa_set_origin;
static vi_read_hw_cursor_t vesa_read_hw_cursor;
static vi_set_hw_cursor_t vesa_set_hw_cursor;
static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
static vi_blank_display_t vesa_blank_display;
static vi_mmap_t vesa_mmap;
static vi_ioctl_t vesa_ioctl;
static vi_clear_t vesa_clear;
static vi_fill_rect_t vesa_fill_rect;
static vi_bitblt_t vesa_bitblt;
static vi_diag_t vesa_diag;
static int vesa_bios_info(int level);
static struct vm86context vesa_vmcontext;
static video_switch_t vesavidsw = {
vesa_probe,
vesa_init,
vesa_get_info,
vesa_query_mode,
vesa_set_mode,
vesa_save_font,
vesa_load_font,
vesa_show_font,
vesa_save_palette,
vesa_load_palette,
vesa_set_border,
vesa_save_state,
vesa_load_state,
vesa_set_origin,
vesa_read_hw_cursor,
vesa_set_hw_cursor,
vesa_set_hw_cursor_shape,
vesa_blank_display,
vesa_mmap,
vesa_ioctl,
vesa_clear,
vesa_fill_rect,
vesa_bitblt,
vesa_error,
vesa_error,
vesa_diag,
};
static video_switch_t *prevvidsw;
/* VESA BIOS video modes */
#define VESA_MAXMODES 64
#define EOT (-1)
#define NA (-2)
#define MODE_TABLE_DELTA 8
static int vesa_vmode_max = 0;
static video_info_t vesa_vmode_empty = { EOT };
static video_info_t *vesa_vmode = &vesa_vmode_empty;
static int vesa_init_done = FALSE;
static int has_vesa_bios = FALSE;
static struct vesa_info *vesa_adp_info = NULL;
static u_int16_t *vesa_vmodetab = NULL;
static char *vesa_oemstr = NULL;
static char *vesa_venderstr = NULL;
static char *vesa_prodstr = NULL;
static char *vesa_revstr = NULL;
/* local macros and functions */
#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
static int int10_set_mode(int mode);
static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
static int vesa_bios_set_mode(int mode);
static int vesa_bios_get_dac(void);
static int vesa_bios_set_dac(int bits);
static int vesa_bios_save_palette(int start, int colors, u_char *palette,
int bits);
static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
u_char *b, int bits);
static int vesa_bios_load_palette(int start, int colors, u_char *palette,
int bits);
#ifdef notyet
static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
u_char *b, int bits);
#endif
#define STATE_SIZE 0
#define STATE_SAVE 1
#define STATE_LOAD 2
#define STATE_HW (1<<0)
#define STATE_DATA (1<<1)
#define STATE_DAC (1<<2)
#define STATE_REG (1<<3)
#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG)
#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
static int vesa_bios_state_buf_size(void);
static int vesa_bios_save_restore(int code, void *p, size_t size);
static int vesa_bios_get_line_length(void);
static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
#if 0
static int vesa_bios_get_start(int *x, int *y);
#endif
static int vesa_bios_set_start(int x, int y);
static int vesa_map_gen_mode_num(int type, int color, int mode);
static int vesa_translate_flags(u_int16_t vflags);
static int vesa_translate_mmodel(u_int8_t vmodel);
static void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off,
u_char *buf);
static int vesa_bios_init(void);
static void vesa_clear_modes(video_info_t *info, int color);
static vm_offset_t vesa_map_buffer(u_int paddr, size_t size);
static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size);
#if 0
static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
#endif
static void
dump_buffer(u_char *buf, size_t len)
{
int i;
for(i = 0; i < len;) {
printf("%02x ", buf[i]);
if ((++i % 16) == 0)
printf("\n");
}
}
/* INT 10 BIOS calls */
static int
int10_set_mode(int mode)
{
struct vm86frame vmf;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x0000 | mode;
vm86_intcall(0x10, &vmf);
return 0;
}
/* VESA BIOS calls */
static int
vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
{
struct vm86frame vmf;
u_char *buf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f01;
vmf.vmf_ecx = mode;
buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 1;
bcopy(buf, vmode, sizeof(*vmode));
return 0;
}
static int
vesa_bios_set_mode(int mode)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f02;
vmf.vmf_ebx = mode;
err = vm86_intcall(0x10, &vmf);
return ((err != 0) || (vmf.vmf_ax != 0x4f));
}
static int
vesa_bios_get_dac(void)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f08;
vmf.vmf_ebx = 1; /* get DAC width */
err = vm86_intcall(0x10, &vmf);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 6; /* XXX */
return ((vmf.vmf_ebx >> 8) & 0x00ff);
}
static int
vesa_bios_set_dac(int bits)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f08;
vmf.vmf_ebx = (bits << 8);
err = vm86_intcall(0x10, &vmf);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 6; /* XXX */
return ((vmf.vmf_ebx >> 8) & 0x00ff);
}
static int
vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
{
struct vm86frame vmf;
u_char *p;
int err;
int i;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f09;
vmf.vmf_ebx = 1; /* get primary palette data */
vmf.vmf_ecx = colors;
vmf.vmf_edx = start;
p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 1;
bits = 8 - bits;
for (i = 0; i < colors; ++i) {
palette[i*3] = p[i*4 + 2] << bits;
palette[i*3 + 1] = p[i*4 + 1] << bits;
palette[i*3 + 2] = p[i*4] << bits;
}
return 0;
}
static int
vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
int bits)
{
struct vm86frame vmf;
u_char *p;
int err;
int i;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f09;
vmf.vmf_ebx = 1; /* get primary palette data */
vmf.vmf_ecx = colors;
vmf.vmf_edx = start;
p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 1;
bits = 8 - bits;
for (i = 0; i < colors; ++i) {
r[i] = p[i*4 + 2] << bits;
g[i] = p[i*4 + 1] << bits;
b[i] = p[i*4] << bits;
}
return 0;
}
static int
vesa_bios_load_palette(int start, int colors, u_char *palette, int bits)
{
struct vm86frame vmf;
u_char *p;
int err;
int i;
p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
bits = 8 - bits;
for (i = 0; i < colors; ++i) {
p[i*4] = palette[i*3 + 2] >> bits;
p[i*4 + 1] = palette[i*3 + 1] >> bits;
p[i*4 + 2] = palette[i*3] >> bits;
p[i*4 + 3] = 0;
}
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f09;
vmf.vmf_ebx = 0; /* set primary palette data */
vmf.vmf_ecx = colors;
vmf.vmf_edx = start;
vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
return ((err != 0) || (vmf.vmf_ax != 0x4f));
}
#ifdef notyet
static int
vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
int bits)
{
struct vm86frame vmf;
u_char *p;
int err;
int i;
p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
bits = 8 - bits;
for (i = 0; i < colors; ++i) {
p[i*4] = b[i] >> bits;
p[i*4 + 1] = g[i] >> bits;
p[i*4 + 2] = r[i] >> bits;
p[i*4 + 3] = 0;
}
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f09;
vmf.vmf_ebx = 0; /* set primary palette data */
vmf.vmf_ecx = colors;
vmf.vmf_edx = start;
vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
return ((err != 0) || (vmf.vmf_ax != 0x4f));
}
#endif
static int
vesa_bios_state_buf_size(void)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f04;
vmf.vmf_ecx = STATE_MOST;
vmf.vmf_edx = STATE_SIZE;
err = vm86_intcall(0x10, &vmf);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 0;
return vmf.vmf_bx*64;
}
static int
vesa_bios_save_restore(int code, void *p, size_t size)
{
struct vm86frame vmf;
u_char *buf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f04;
vmf.vmf_ecx = STATE_MOST;
vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_bx);
bcopy(p, buf, size);
err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
return ((err != 0) || (vmf.vmf_ax != 0x4f));
}
static int
vesa_bios_get_line_length(void)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f06;
vmf.vmf_ebx = 1; /* get scan line length */
err = vm86_intcall(0x10, &vmf);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return -1;
return vmf.vmf_bx; /* line length in bytes */
}
static int
vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f06;
vmf.vmf_ebx = 0; /* set scan line length in pixel */
vmf.vmf_ecx = pixel;
err = vm86_intcall(0x10, &vmf);
#if VESA_DEBUG > 1
printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx);
#endif
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 1;
if (bytes)
*bytes = vmf.vmf_bx;
if (lines)
*lines = vmf.vmf_dx;
return 0;
}
#if 0
static int
vesa_bios_get_start(int *x, int *y)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f07;
vmf.vmf_ebx = 1; /* get display start */
err = vm86_intcall(0x10, &vmf);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 1;
*x = vmf.vmf_cx;
*y = vmf.vmf_dx;
return 0;
}
#endif
static int
vesa_bios_set_start(int x, int y)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f07;
vmf.vmf_ebx = 0x80; /* set display start */
vmf.vmf_edx = y;
vmf.vmf_ecx = x;
err = vm86_intcall(0x10, &vmf);
return ((err != 0) || (vmf.vmf_ax != 0x4f));
}
/* map a generic video mode to a known mode */
static int
vesa_map_gen_mode_num(int type, int color, int mode)
{
static struct {
int from;
int to;
} mode_map[] = {
{ M_TEXT_132x25, M_VESA_C132x25 },
{ M_TEXT_132x43, M_VESA_C132x43 },
{ M_TEXT_132x50, M_VESA_C132x50 },
{ M_TEXT_132x60, M_VESA_C132x60 },
};
int i;
for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
if (mode_map[i].from == mode)
return mode_map[i].to;
}
return mode;
}
static int
vesa_translate_flags(u_int16_t vflags)
{
static struct {
u_int16_t mask;
int set;
int reset;
} ftable[] = {
{ V_MODECOLOR, V_INFO_COLOR, 0 },
{ V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
{ V_MODELFB, V_INFO_LINEAR, 0 },
};
int flags;
int i;
for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
flags |= (vflags & ftable[i].mask) ?
ftable[i].set : ftable[i].reset;
}
return flags;
}
static int
vesa_translate_mmodel(u_int8_t vmodel)
{
static struct {
u_int8_t vmodel;
int mmodel;
} mtable[] = {
{ V_MMTEXT, V_INFO_MM_TEXT },
{ V_MMCGA, V_INFO_MM_CGA },
{ V_MMHGC, V_INFO_MM_HGC },
{ V_MMEGA, V_INFO_MM_PLANAR },
{ V_MMPACKED, V_INFO_MM_PACKED },
{ V_MMDIRCOLOR, V_INFO_MM_DIRECT },
};
int i;
for (i = 0; mtable[i].mmodel >= 0; ++i) {
if (mtable[i].vmodel == vmodel)
return mtable[i].mmodel;
}
return V_INFO_MM_OTHER;
}
static void
*vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf)
{
if (p == 0)
return NULL;
if (((p >> 16) == seg) && ((p & 0xffff) >= off))
return (void *)(buf + ((p & 0xffff) - off));
else {
p = BIOS_SADDRTOLADDR(p);
return (void *)BIOS_PADDRTOVADDR(p);
}
}
static int
vesa_bios_init(void)
{
static u_char buf[512];
struct vm86frame vmf;
struct vesa_mode vmode;
video_info_t *p;
u_char *vmbuf;
int modes;
int err;
int i;
if (vesa_init_done)
return 0;
has_vesa_bios = FALSE;
vesa_adp_info = NULL;
vesa_vmode_max = 0;
vesa_vmode[0].vi_mode = EOT;
vmbuf = (u_char *)vm86_addpage(&vesa_vmcontext, 1, 0);
bzero(&vmf, sizeof(vmf)); /* paranoia */
bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
vmf.vmf_eax = 0x4f00;
vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di);
err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4))
return 1;
bcopy(vmbuf, buf, sizeof(buf));
vesa_adp_info = (struct vesa_info *)buf;
if (bootverbose) {
printf("VESA: information block\n");
dump_buffer(buf, 64);
}
if (vesa_adp_info->v_flags & V_NONVGA)
return 1;
if (vesa_adp_info->v_version < 0x0102) {
printf("VESA: VBE version %d.%d is not supported; "
"version 1.2 or later is required.\n",
((vesa_adp_info->v_version & 0xf000) >> 12) * 10
+ ((vesa_adp_info->v_version & 0x0f00) >> 8),
((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
+ (vesa_adp_info->v_version & 0x000f));
return 1;
}
/* fix string ptrs */
vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr,
vmf.vmf_es, vmf.vmf_di, buf);
if (vesa_adp_info->v_version >= 0x0200) {
vesa_venderstr =
(char *)vesa_fix_ptr(vesa_adp_info->v_venderstr,
vmf.vmf_es, vmf.vmf_di, buf);
vesa_prodstr =
(char *)vesa_fix_ptr(vesa_adp_info->v_prodstr,
vmf.vmf_es, vmf.vmf_di, buf);
vesa_revstr =
(char *)vesa_fix_ptr(vesa_adp_info->v_revstr,
vmf.vmf_es, vmf.vmf_di, buf);
}
/* obtain video mode information */
vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable,
vmf.vmf_es, vmf.vmf_di, buf);
if (vesa_vmodetab == NULL)
return 1;
for (i = 0, modes = 0;
(i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
&& (vesa_vmodetab[i] != 0xffff); ++i) {
if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
continue;
/* reject unsupported modes */
#if 0
if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO
| V_MODENONVGA))
!= (V_MODESUPP | V_MODEOPTINFO))
continue;
#else
if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) {
#if VESA_DEBUG > 1
printf(
"Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n",
vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
vmode.v_width, vmode.v_height, vmode.v_bpp,
vmode.v_modeattr);
#endif
continue;
}
#endif
/* expand the array if necessary */
if (modes >= vesa_vmode_max) {
vesa_vmode_max += MODE_TABLE_DELTA;
p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1),
M_DEVBUF, M_WAITOK);
#if VESA_DEBUG > 1
printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
modes, vesa_vmode_max);
#endif
if (modes > 0) {
bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
free(vesa_vmode, M_DEVBUF);
}
vesa_vmode = p;
}
#if VESA_DEBUG > 1
printf("Found VESA %s mode: %d x %d x %d bpp\n",
vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
vmode.v_width, vmode.v_height, vmode.v_bpp);
#endif
/* copy some fields */
bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
vesa_vmode[modes].vi_width = vmode.v_width;
vesa_vmode[modes].vi_height = vmode.v_height;
vesa_vmode[modes].vi_depth = vmode.v_bpp;
vesa_vmode[modes].vi_planes = vmode.v_planes;
vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
vesa_vmode[modes].vi_cheight = vmode.v_cheight;
vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4;
/* XXX window B */
vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024;
vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024;
if (vmode.v_modeattr & V_MODELFB)
vesa_vmode[modes].vi_buffer = vmode.v_lfb;
else
vesa_vmode[modes].vi_buffer = 0;
/* XXX */
vesa_vmode[modes].vi_buffer_size
= vesa_adp_info->v_memsize*64*1024;
#if 0
if (vmode.v_offscreen > vmode.v_lfb)
vesa_vmode[modes].vi_buffer_size
= vmode.v_offscreen + vmode.v_offscreensize*1024
- vmode.v_lfb;
else
vesa_vmode[modes].vi_buffer_size
= vmode.v_offscreen + vmode.v_offscreensize*1024
#endif
vesa_vmode[modes].vi_mem_model
= vesa_translate_mmodel(vmode.v_memmodel);
vesa_vmode[modes].vi_pixel_fields[0] = 0;
vesa_vmode[modes].vi_pixel_fields[1] = 0;
vesa_vmode[modes].vi_pixel_fields[2] = 0;
vesa_vmode[modes].vi_pixel_fields[3] = 0;
vesa_vmode[modes].vi_pixel_fsizes[0] = 0;
vesa_vmode[modes].vi_pixel_fsizes[1] = 0;
vesa_vmode[modes].vi_pixel_fsizes[2] = 0;
vesa_vmode[modes].vi_pixel_fsizes[3] = 0;
if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) {
vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
} else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) {
vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
vesa_vmode[modes].vi_pixel_fields[0]
= vmode.v_redfieldpos;
vesa_vmode[modes].vi_pixel_fields[1]
= vmode.v_greenfieldpos;
vesa_vmode[modes].vi_pixel_fields[2]
= vmode.v_bluefieldpos;
vesa_vmode[modes].vi_pixel_fields[3]
= vmode.v_resfieldpos;
vesa_vmode[modes].vi_pixel_fsizes[0]
= vmode.v_redmasksize;
vesa_vmode[modes].vi_pixel_fsizes[1]
= vmode.v_greenmasksize;
vesa_vmode[modes].vi_pixel_fsizes[2]
= vmode.v_bluemasksize;
vesa_vmode[modes].vi_pixel_fsizes[3]
= vmode.v_resmasksize;
} else {
vesa_vmode[modes].vi_pixel_size = 0;
}
vesa_vmode[modes].vi_flags
= vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
++modes;
}
vesa_vmode[modes].vi_mode = EOT;
if (bootverbose)
printf("VESA: %d mode(s) found\n", modes);
has_vesa_bios = (modes > 0);
return (has_vesa_bios ? 0 : 1);
}
static void
vesa_clear_modes(video_info_t *info, int color)
{
while (info->vi_mode != EOT) {
if ((info->vi_flags & V_INFO_COLOR) != color)
info->vi_mode = NA;
++info;
}
}
static vm_offset_t
vesa_map_buffer(u_int paddr, size_t size)
{
vm_offset_t vaddr;
u_int off;
off = paddr - trunc_page(paddr);
vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
#if VESA_DEBUG > 1
printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n",
paddr, vaddr, size, off);
#endif
return (vaddr + off);
}
static void
vesa_unmap_buffer(vm_offset_t vaddr, size_t size)
{
#if VESA_DEBUG > 1
printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size);
#endif
kmem_free(kernel_map, vaddr, size);
}
/* entry points */
static int
vesa_configure(int flags)
{
video_adapter_t *adp;
int adapters;
int error;
int i;
if (vesa_init_done)
return 0;
if (flags & VIO_PROBE_ONLY)
return 0; /* XXX */
/*
* If the VESA module has already been loaded, abort loading
* the module this time.
*/
for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
if (adp->va_flags & V_ADP_VESA)
return ENXIO;
if (adp->va_type == KD_VGA)
break;
}
/*
* The VGA adapter is not found. This is because either
* 1) the VGA driver has not been initialized, or 2) the VGA card
* is not present. If 1) is the case, we shall defer
* initialization for now and try again later.
*/
if (adp == NULL) {
vga_sub_configure = vesa_configure;
return ENODEV;
}
/* count number of registered adapters */
for (++i; vid_get_adapter(i) != NULL; ++i)
;
adapters = i;
/* call VESA BIOS */
vesa_adp = adp;
if (vesa_bios_init()) {
vesa_adp = NULL;
return ENXIO;
}
vesa_adp->va_flags |= V_ADP_VESA;
/* remove conflicting modes if we have more than one adapter */
if (adapters > 1) {
vesa_clear_modes(vesa_vmode,
(vesa_adp->va_flags & V_ADP_COLOR) ?
V_INFO_COLOR : 0);
}
if ((error = vesa_load_ioctl()) == 0) {
prevvidsw = vidsw[vesa_adp->va_index];
vidsw[vesa_adp->va_index] = &vesavidsw;
vesa_init_done = TRUE;
} else {
vesa_adp = NULL;
return error;
}
return 0;
}
#if 0
static int
vesa_nop(void)
{
return 0;
}
#endif
static int
vesa_error(void)
{
return 1;
}
static int
vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
{
return (*prevvidsw->probe)(unit, adpp, arg, flags);
}
static int
vesa_init(int unit, video_adapter_t *adp, int flags)
{
return (*prevvidsw->init)(unit, adp, flags);
}
static int
vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
{
int i;
if ((*prevvidsw->get_info)(adp, mode, info) == 0)
return 0;
if (adp != vesa_adp)
return 1;
mode = vesa_map_gen_mode_num(vesa_adp->va_type,
vesa_adp->va_flags & V_ADP_COLOR, mode);
for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
if (vesa_vmode[i].vi_mode == NA)
continue;
if (vesa_vmode[i].vi_mode == mode) {
*info = vesa_vmode[i];
return 0;
}
}
return 1;
}
static int
vesa_query_mode(video_adapter_t *adp, video_info_t *info)
{
int i;
if ((*prevvidsw->query_mode)(adp, info) == 0)
return 0;
if (adp != vesa_adp)
return ENODEV;
for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
if ((info->vi_width != 0)
&& (info->vi_width != vesa_vmode[i].vi_width))
continue;
if ((info->vi_height != 0)
&& (info->vi_height != vesa_vmode[i].vi_height))
continue;
if ((info->vi_cwidth != 0)
&& (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
continue;
if ((info->vi_cheight != 0)
&& (info->vi_cheight != vesa_vmode[i].vi_cheight))
continue;
if ((info->vi_depth != 0)
&& (info->vi_depth != vesa_vmode[i].vi_depth))
continue;
if ((info->vi_planes != 0)
&& (info->vi_planes != vesa_vmode[i].vi_planes))
continue;
/* pixel format, memory model */
if ((info->vi_flags != 0)
&& (info->vi_flags != vesa_vmode[i].vi_flags))
continue;
*info = vesa_vmode[i];
return 0;
}
return ENODEV;
}
static int
vesa_set_mode(video_adapter_t *adp, int mode)
{
video_info_t info;
int len;
if (adp != vesa_adp)
return (*prevvidsw->set_mode)(adp, mode);
mode = vesa_map_gen_mode_num(adp->va_type,
adp->va_flags & V_ADP_COLOR, mode);
#if VESA_DEBUG > 0
printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
adp->va_mode, adp->va_mode, mode, mode);
#endif
/*
* If the current mode is a VESA mode and the new mode is not,
* restore the state of the adapter first by setting one of the
* standard VGA mode, so that non-standard, extended SVGA registers
* are set to the state compatible with the standard VGA modes.
* Otherwise (*prevvidsw->set_mode)() may not be able to set up
* the new mode correctly.
*/
if (VESA_MODE(adp->va_mode)) {
if ((*prevvidsw->get_info)(adp, mode, &info) == 0) {
int10_set_mode(adp->va_initial_bios_mode);
if (adp->va_info.vi_flags & V_INFO_LINEAR)
vesa_unmap_buffer(adp->va_buffer,
vesa_adp_info->v_memsize*64*1024);
/*
* Once (*prevvidsw->get_info)() succeeded,
* (*prevvidsw->set_mode)() below won't fail...
*/
}
}
/* we may not need to handle this mode after all... */
if ((*prevvidsw->set_mode)(adp, mode) == 0)
return 0;
/* is the new mode supported? */
if (vesa_get_info(adp, mode, &info))
return 1;
/* assert(VESA_MODE(mode)); */
#if VESA_DEBUG > 0
printf("VESA: about to set a VESA mode...\n");
#endif
/* don't use the linear frame buffer for text modes. XXX */
if (!(info.vi_flags & V_INFO_GRAPHICS))
info.vi_flags &= ~V_INFO_LINEAR;
if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0)))
return 1;
if (adp->va_info.vi_flags & V_INFO_LINEAR)
vesa_unmap_buffer(adp->va_buffer,
vesa_adp_info->v_memsize*64*1024);
#if VESA_DEBUG > 0
printf("VESA: mode set!\n");
#endif
vesa_adp->va_mode = mode;
vesa_adp->va_flags &= ~V_ADP_COLOR;
vesa_adp->va_flags |=
(info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
vesa_adp->va_crtc_addr =
(vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
if (info.vi_flags & V_INFO_LINEAR) {
#if VESA_DEBUG > 1
printf("VESA: setting up LFB\n");
#endif
vesa_adp->va_buffer =
vesa_map_buffer(info.vi_buffer,
vesa_adp_info->v_memsize*64*1024);
vesa_adp->va_buffer_size = info.vi_buffer_size;
vesa_adp->va_window = vesa_adp->va_buffer;
vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes;
vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes;
} else {
vesa_adp->va_buffer = 0;
vesa_adp->va_buffer_size = info.vi_buffer_size;
vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window);
vesa_adp->va_window_size = info.vi_window_size;
vesa_adp->va_window_gran = info.vi_window_gran;
}
vesa_adp->va_window_orig = 0;
len = vesa_bios_get_line_length();
if (len > 0) {
vesa_adp->va_line_width = len;
} else if (info.vi_flags & V_INFO_GRAPHICS) {
switch (info.vi_depth/info.vi_planes) {
case 1:
vesa_adp->va_line_width = info.vi_width/8;
break;
case 2:
vesa_adp->va_line_width = info.vi_width/4;
break;
case 4:
vesa_adp->va_line_width = info.vi_width/2;
break;
case 8:
default: /* shouldn't happen */
vesa_adp->va_line_width = info.vi_width;
break;
}
} else {
vesa_adp->va_line_width = info.vi_width;
}
vesa_adp->va_disp_start.x = 0;
vesa_adp->va_disp_start.y = 0;
#if VESA_DEBUG > 0
printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n",
info.vi_width, len, vesa_adp->va_line_width);
#endif
bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
/* move hardware cursor out of the way */
(*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
return 0;
}
static int
vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
int ch, int count)
{
return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count);
}
static int
vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
int ch, int count)
{
return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count);
}
static int
vesa_show_font(video_adapter_t *adp, int page)
{
return (*prevvidsw->show_font)(adp, page);
}
static int
vesa_save_palette(video_adapter_t *adp, u_char *palette)
{
int bits;
int error;
if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
&& VESA_MODE(adp->va_mode)) {
bits = vesa_bios_get_dac();
error = vesa_bios_save_palette(0, 256, palette, bits);
if (error == 0)
return 0;
if (bits != 6)
return error;
}
return (*prevvidsw->save_palette)(adp, palette);
}
static int
vesa_load_palette(video_adapter_t *adp, u_char *palette)
{
#if notyet
int bits;
int error;
if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
&& VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) {
error = vesa_bios_load_palette(0, 256, palette, bits);
if (error == 0)
return 0;
if (vesa_bios_set_dac(6) != 6)
return 1;
}
#endif /* notyet */
return (*prevvidsw->load_palette)(adp, palette);
}
static int
vesa_set_border(video_adapter_t *adp, int color)
{
return (*prevvidsw->set_border)(adp, color);
}
static int
vesa_save_state(video_adapter_t *adp, void *p, size_t size)
{
if (adp != vesa_adp)
return (*prevvidsw->save_state)(adp, p, size);
if (vesa_state_buf_size == 0)
vesa_state_buf_size = vesa_bios_state_buf_size();
if (size == 0)
return (sizeof(int) + vesa_state_buf_size);
else if (size < (sizeof(int) + vesa_state_buf_size))
return 1;
((adp_state_t *)p)->sig = V_STATE_SIG;
bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs,
vesa_state_buf_size);
}
static int
vesa_load_state(video_adapter_t *adp, void *p)
{
if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG))
return (*prevvidsw->load_state)(adp, p);
return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
vesa_state_buf_size);
}
#if 0
static int
vesa_get_origin(video_adapter_t *adp, off_t *offset)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f05;
vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */
err = vm86_intcall(0x10, &vmf);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 1;
*offset = vmf.vmf_dx*adp->va_window_gran;
return 0;
}
#endif
static int
vesa_set_origin(video_adapter_t *adp, off_t offset)
{
struct vm86frame vmf;
int err;
/*
* This function should return as quickly as possible to
* maintain good performance of the system. For this reason,
* error checking is kept minimal and let the VESA BIOS to
* detect error.
*/
if (adp != vesa_adp)
return (*prevvidsw->set_win_org)(adp, offset);
/* if this is a linear frame buffer, do nothing */
if (adp->va_info.vi_flags & V_INFO_LINEAR)
return 0;
/* XXX */
if (adp->va_window_gran == 0)
return 1;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f05;
vmf.vmf_ebx = 0; /* WINDOW_A, XXX */
vmf.vmf_edx = offset/adp->va_window_gran;
err = vm86_intcall(0x10, &vmf);
if ((err != 0) || (vmf.vmf_ax != 0x4f))
return 1;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f05;
vmf.vmf_ebx = 1; /* WINDOW_B, XXX */
vmf.vmf_edx = offset/adp->va_window_gran;
err = vm86_intcall(0x10, &vmf);
adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran;
return 0; /* XXX */
}
static int
vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
{
return (*prevvidsw->read_hw_cursor)(adp, col, row);
}
static int
vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
{
return (*prevvidsw->set_hw_cursor)(adp, col, row);
}
static int
vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
int celsize, int blink)
{
return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
blink);
}
static int
vesa_blank_display(video_adapter_t *adp, int mode)
{
/* XXX: use VESA DPMS */
return (*prevvidsw->blank_display)(adp, mode);
}
static int
vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr,
int prot)
{
#if VESA_DEBUG > 0
printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n",
adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
#endif
if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) {
/* va_window_size == va_buffer_size/vi_planes */
/* XXX: is this correct? */
if (offset > adp->va_window_size - PAGE_SIZE)
return -1;
*paddr = adp->va_info.vi_buffer + offset;
return 0;
} else {
return (*prevvidsw->mmap)(adp, offset, paddr, prot);
}
}
static int
vesa_clear(video_adapter_t *adp)
{
return (*prevvidsw->clear)(adp);
}
static int
vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
{
return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
}
static int
vesa_bitblt(video_adapter_t *adp,...)
{
/* FIXME */
return 1;
}
static int
get_palette(video_adapter_t *adp, int base, int count,
u_char *red, u_char *green, u_char *blue, u_char *trans)
{
u_char *r;
u_char *g;
u_char *b;
int bits;
int error;
if ((base < 0) || (base >= 256) || (count < 0) || (count > 256))
return 1;
if ((base + count) > 256)
return 1;
if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode))
return 1;
bits = vesa_bios_get_dac();
if (bits <= 6)
return 1;
r = malloc(count*3, M_DEVBUF, M_WAITOK);
g = r + count;
b = g + count;
error = vesa_bios_save_palette2(base, count, r, g, b, bits);
if (error == 0) {
copyout(r, red, count);
copyout(g, green, count);
copyout(b, blue, count);
if (trans != NULL) {
bzero(r, count);
copyout(r, trans, count);
}
}
free(r, M_DEVBUF);
/* if error && bits != 6 at this point, we are in in trouble... XXX */
return error;
}
static int
set_palette(video_adapter_t *adp, int base, int count,
u_char *red, u_char *green, u_char *blue, u_char *trans)
{
return 1;
#if notyet
u_char *r;
u_char *g;
u_char *b;
int bits;
int error;
if ((base < 0) || (base >= 256) || (base + count > 256))
return 1;
if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)
|| ((bits = vesa_bios_set_dac(8)) <= 6))
return 1;
r = malloc(count*3, M_DEVBUF, M_WAITOK);
g = r + count;
b = g + count;
copyin(red, r, count);
copyin(green, g, count);
copyin(blue, b, count);
error = vesa_bios_load_palette2(base, count, r, g, b, bits);
free(r, M_DEVBUF);
if (error == 0)
return 0;
/* if the following call fails, we are in trouble... XXX */
vesa_bios_set_dac(6);
return 1;
#endif /* notyet */
}
static int
vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
{
int bytes;
if (adp != vesa_adp)
return (*prevvidsw->ioctl)(adp, cmd, arg);
switch (cmd) {
case FBIO_SETWINORG: /* set frame buffer window origin */
if (!VESA_MODE(adp->va_mode))
return (*prevvidsw->ioctl)(adp, cmd, arg);
return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
case FBIO_SETDISPSTART: /* set display start address */
if (!VESA_MODE(adp->va_mode))
return (*prevvidsw->ioctl)(adp, cmd, arg);
if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
((video_display_start_t *)arg)->y))
return ENODEV;
adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
return 0;
case FBIO_SETLINEWIDTH: /* set line length in pixel */
if (!VESA_MODE(adp->va_mode))
return (*prevvidsw->ioctl)(adp, cmd, arg);
if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
return ENODEV;
adp->va_line_width = bytes;
#if VESA_DEBUG > 1
printf("new line width:%d\n", adp->va_line_width);
#endif
return 0;
case FBIO_GETPALETTE: /* get color palette */
if (get_palette(adp, ((video_color_palette_t *)arg)->index,
((video_color_palette_t *)arg)->count,
((video_color_palette_t *)arg)->red,
((video_color_palette_t *)arg)->green,
((video_color_palette_t *)arg)->blue,
((video_color_palette_t *)arg)->transparent))
return (*prevvidsw->ioctl)(adp, cmd, arg);
return 0;
case FBIO_SETPALETTE: /* set color palette */
if (set_palette(adp, ((video_color_palette_t *)arg)->index,
((video_color_palette_t *)arg)->count,
((video_color_palette_t *)arg)->red,
((video_color_palette_t *)arg)->green,
((video_color_palette_t *)arg)->blue,
((video_color_palette_t *)arg)->transparent))
return (*prevvidsw->ioctl)(adp, cmd, arg);
return 0;
case FBIOGETCMAP: /* get color palette */
if (get_palette(adp, ((struct fbcmap *)arg)->index,
((struct fbcmap *)arg)->count,
((struct fbcmap *)arg)->red,
((struct fbcmap *)arg)->green,
((struct fbcmap *)arg)->blue, NULL))
return (*prevvidsw->ioctl)(adp, cmd, arg);
return 0;
case FBIOPUTCMAP: /* set color palette */
if (set_palette(adp, ((struct fbcmap *)arg)->index,
((struct fbcmap *)arg)->count,
((struct fbcmap *)arg)->red,
((struct fbcmap *)arg)->green,
((struct fbcmap *)arg)->blue, NULL))
return (*prevvidsw->ioctl)(adp, cmd, arg);
return 0;
default:
return (*prevvidsw->ioctl)(adp, cmd, arg);
}
}
static int
vesa_diag(video_adapter_t *adp, int level)
{
int error;
/* call the previous handler first */
error = (*prevvidsw->diag)(adp, level);
if (error)
return error;
if (adp != vesa_adp)
return 1;
if (level <= 0)
return 0;
return 0;
}
static int
vesa_bios_info(int level)
{
#if VESA_DEBUG > 1
struct vesa_mode vmode;
int i;
#endif
/* general adapter information */
printf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
((vesa_adp_info->v_version & 0xf000) >> 12) * 10
+ ((vesa_adp_info->v_version & 0x0f00) >> 8),
((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
+ (vesa_adp_info->v_version & 0x000f),
vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
vesa_vmodetab, vesa_adp_info->v_modetable);
/* OEM string */
if (vesa_oemstr != NULL)
printf("VESA: %s\n", vesa_oemstr);
if (level <= 0)
return 0;
if (vesa_adp_info->v_version >= 0x0200) {
/* vender name, product name, product revision */
printf("VESA: %s %s %s\n",
(vesa_venderstr != NULL) ? vesa_venderstr : "unknown",
(vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
(vesa_revstr != NULL) ? vesa_revstr : "?");
}
#if VESA_DEBUG > 1
/* mode information */
for (i = 0;
(i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
&& (vesa_vmodetab[i] != 0xffff); ++i) {
if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
continue;
/* print something for diagnostic purpose */
printf("VESA: mode:0x%03x, flags:0x%04x",
vesa_vmodetab[i], vmode.v_modeattr);
if (vmode.v_modeattr & V_MODEOPTINFO) {
if (vmode.v_modeattr & V_MODEGRAPHICS) {
printf(", G %dx%dx%d %d, ",
vmode.v_width, vmode.v_height,
vmode.v_bpp, vmode.v_planes);
} else {
printf(", T %dx%d, ",
vmode.v_width, vmode.v_height);
}
printf("font:%dx%d, ",
vmode.v_cwidth, vmode.v_cheight);
printf("pages:%d, mem:%d",
vmode.v_ipages + 1, vmode.v_memmodel);
}
if (vmode.v_modeattr & V_MODELFB) {
printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
vmode.v_lfb, vmode.v_offscreen,
vmode.v_offscreensize*1024);
}
printf("\n");
printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
vmode.v_waseg, vmode.v_waattr,
vmode.v_wbseg, vmode.v_wbattr);
printf("size:%dk, gran:%dk\n",
vmode.v_wsize, vmode.v_wgran);
}
#endif /* VESA_DEBUG > 1 */
return 0;
}
/* module loading */
static int
vesa_load(void)
{
int error;
int s;
if (vesa_init_done)
return 0;
/* locate a VGA adapter */
s = spltty();
vesa_adp = NULL;
error = vesa_configure(0);
splx(s);
if (error == 0)
vesa_bios_info(bootverbose);
return error;
}
static int
vesa_unload(void)
{
u_char palette[256*3];
int error;
int bits;
int s;
/* if the adapter is currently in a VESA mode, don't unload */
if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
return EBUSY;
/*
* FIXME: if there is at least one vty which is in a VESA mode,
* we shouldn't be unloading! XXX
*/
s = spltty();
if ((error = vesa_unload_ioctl()) == 0) {
if (vesa_adp != NULL) {
if (vesa_adp_info->v_flags & V_DAC8) {
bits = vesa_bios_get_dac();
if (bits > 6) {
vesa_bios_save_palette(0, 256,
palette, bits);
vesa_bios_set_dac(6);
vesa_bios_load_palette(0, 256,
palette, 6);
}
}
vesa_adp->va_flags &= ~V_ADP_VESA;
vidsw[vesa_adp->va_index] = prevvidsw;
}
}
splx(s);
return error;
}
static int
vesa_mod_event(module_t mod, int type, void *data)
{
switch (type) {
case MOD_LOAD:
return vesa_load();
case MOD_UNLOAD:
return vesa_unload();
default:
break;
}
return 0;
}
static moduledata_t vesa_mod = {
"vesa",
vesa_mod_event,
NULL,
};
DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
#endif /* VGA_NO_MODE_CHANGE */
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