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a3cd018562
freebsd/sys/i386/isa/vesa.c
Kazutaka YOKOTA a3cd018562 Cosmetic change: adjust copyright notice.
1998-09-25 11:55:46 +00:00

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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.
*
* $Id: vesa.c,v 1.2 1998/09/23 09:59:00 yokota Exp $
*/
#include "sc.h"
#include "opt_vesa.h"
#include "opt_vm86.h"
#if (NSC > 0 && defined(VESA) && defined(VM86)) || defined(VESA_MODULE)
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/console.h>
#include <machine/md_var.h>
#include <machine/vm86.h>
#include <machine/pc/bios.h>
#include <machine/pc/vesa.h>
#include <i386/isa/videoio.h>
#ifdef VESA_MODULE
#include <sys/exec.h>
#include <sys/sysent.h>
#include <sys/lkm.h>
MOD_MISC(vesa);
#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;
static void *vesa_state_buf = NULL;
/* VESA functions */
static vi_init_t vesa_init;
static vi_adapter_t vesa_adapter;
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_diag_t vesa_diag;
static struct vidsw vesavidsw = {
vesa_init, vesa_adapter, 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_diag,
};
static struct vidsw prevvidsw;
/* VESA BIOS video modes */
#define VESA_MAXMODES 64
#define EOT (-1)
#define NA (-2)
static video_info_t vesa_vmode[VESA_MAXMODES + 1] = {
{ EOT, },
};
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;
/* local macros and functions */
#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
static int vesa_bios_set_mode(int mode);
static int vesa_bios_set_dac(int bits);
static int vesa_bios_save_palette(int start, int colors, u_char *palette);
static int vesa_bios_load_palette(int start, int colors, u_char *palette);
#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_map_gen_mode_num(int type, int color, int mode);
static int vesa_translate_flags(u_int16_t vflags);
static int vesa_bios_init(void);
static void vesa_clear_modes(video_info_t *info, int color);
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");
}
}
/* VESA BIOS calls */
static int
vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
{
struct vm86frame vmf;
u_char buf[256];
int err;
bzero(&vmf, sizeof(vmf));
bzero(buf, sizeof(buf));
vmf.vmf_eax = 0x4f01;
vmf.vmf_ecx = mode;
err = vm86_datacall(0x10, &vmf, (char *)buf, sizeof(buf),
&vmf.vmf_es, &vmf.vmf_di);
if ((err != 0) || (vmf.vmf_eax != 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_eax != 0x4f));
}
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);
return ((err != 0) || (vmf.vmf_eax != 0x4f));
}
static int
vesa_bios_save_palette(int start, int colors, u_char *palette)
{
struct vm86frame vmf;
u_char *p;
int err;
int i;
p = malloc(colors*4, M_DEVBUF, M_WAITOK);
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f09;
vmf.vmf_ebx = 1; /* get primary palette data */
vmf.vmf_ecx = colors;
vmf.vmf_edx = start;
err = vm86_datacall(0x10, &vmf, p, colors*4, &vmf.vmf_es, &vmf.vmf_di);
if ((err != 0) || (vmf.vmf_eax != 0x4f)) {
free(p, M_DEVBUF);
return 1;
}
for (i = 0; i < colors; ++i) {
palette[i*3] = p[i*4 + 1];
palette[i*3 + 1] = p[i*4 + 2];
palette[i*3 + 2] = p[i*4 + 3];
}
free(p, M_DEVBUF);
return 0;
}
static int
vesa_bios_load_palette(int start, int colors, u_char *palette)
{
struct vm86frame vmf;
u_char *p;
int err;
int i;
p = malloc(colors*4, M_DEVBUF, M_WAITOK);
for (i = 0; i < colors; ++i) {
p[i*4] = 0;
p[i*4 + 1] = palette[i*3];
p[i*4 + 2] = palette[i*3 + 1];
p[i*4 + 3] = palette[i*3 + 2];
}
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f09;
vmf.vmf_ebx = 0; /* set primary palette data */
vmf.vmf_ecx = colors;
vmf.vmf_edx = start;
err = vm86_datacall(0x10, &vmf, p, colors*4, &vmf.vmf_es, &vmf.vmf_di);
free(p, M_DEVBUF);
return ((err != 0) || (vmf.vmf_eax != 0x4f));
}
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_eax != 0x4f))
return 0;
return vmf.vmf_ebx*64;
}
static int
vesa_bios_save_restore(int code, void *p, size_t size)
{
struct vm86frame vmf;
int err;
bzero(&vmf, sizeof(vmf));
vmf.vmf_eax = 0x4f04;
vmf.vmf_ecx = STATE_MOST;
vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
err = vm86_datacall(0x10, &vmf, (char *)p, size,
&vmf.vmf_es, &vmf.vmf_bx);
return ((err != 0) || (vmf.vmf_eax != 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_LENEAR, 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_bios_init(void)
{
static u_char buf[512];
struct vm86frame vmf;
struct vesa_mode vmode;
u_int32_t p;
int modes;
int err;
int i;
if (vesa_init_done)
return 0;
has_vesa_bios = FALSE;
vesa_adp_info = NULL;
vesa_vmode[0].vi_mode = EOT;
bzero(&vmf, sizeof(vmf)); /* paranoia */
bzero(buf, sizeof(buf));
bcopy("VBE2", buf, 4); /* try for VBE2 data */
vmf.vmf_eax = 0x4f00;
err = vm86_datacall(0x10, &vmf, (char *)buf, sizeof(buf),
&vmf.vmf_es, &vmf.vmf_di);
if ((err != 0) || (vmf.vmf_eax != 0x4f) || bcmp("VESA", buf, 4))
return 1;
vesa_adp_info = (struct vesa_info *)buf;
if (bootverbose)
dump_buffer(buf, 64);
if (vesa_adp_info->v_flags & V_NONVGA)
return 1;
/* obtain video mode information */
p = BIOS_SADDRTOLADDR(vesa_adp_info->v_modetable);
vesa_vmodetab = (u_int16_t *)BIOS_PADDRTOVADDR(p);
for (i = 0, modes = 0; vesa_vmodetab[i] != 0xffff; ++i) {
if (modes >= VESA_MAXMODES)
break;
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 | V_MODENONVGA))
!= (V_MODEOPTINFO))
continue;
#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;
vesa_vmode[modes].vi_window_gran = vmode.v_wgran;
vesa_vmode[modes].vi_buffer = vmode.v_lfb;
vesa_vmode[modes].vi_buffer_size = vmode.v_offscreen;
/* pixel format, memory model... */
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 = TRUE;
return 0;
}
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;
}
}
/* exported functions */
static int
vesa_init(void)
{
int adapters;
int i;
adapters = (*prevvidsw.init)();
for (i = 0; i < adapters; ++i) {
if ((vesa_adp = (*prevvidsw.adapter)(i)) == NULL)
continue;
if (vesa_adp->va_type == KD_VGA) {
vesa_adp->va_flags |= V_ADP_VESA;
return adapters;
}
}
vesa_adp = NULL;
return adapters;
}
static video_adapter_t
*vesa_adapter(int ad)
{
return (*prevvidsw.adapter)(ad);
}
static int
vesa_get_info(int ad, int mode, video_info_t *info)
{
int i;
if ((*prevvidsw.get_info)(ad, mode, info) == 0)
return 0;
if (ad != vesa_adp->va_index)
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(int ad, video_info_t *info)
{
int i;
if ((i = (*prevvidsw.query_mode)(ad, info)) != -1)
return i;
if (ad != vesa_adp->va_index)
return -1;
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;
return vesa_vmode[i].vi_mode;
}
return -1;
}
static int
vesa_set_mode(int ad, int mode)
{
video_info_t info;
size_t len;
if (ad != vesa_adp->va_index)
return (*prevvidsw.set_mode)(ad, mode);
mode = vesa_map_gen_mode_num(vesa_adp->va_type,
vesa_adp->va_flags & V_ADP_COLOR, mode);
#ifdef SC_VIDEO_DEBUG
printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
vesa_adp->va_mode, vesa_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, 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(vesa_adp->va_mode)) {
if ((*prevvidsw.get_info)(ad, mode, &info) == 0) {
/* assert(vesa_state_buf != NULL); */
if ((vesa_state_buf == NULL)
|| vesa_load_state(ad, vesa_state_buf))
return 1;
free(vesa_state_buf, M_DEVBUF);
vesa_state_buf = NULL;
#ifdef SC_VIDEO_DEBUG
printf("VESA: restored\n");
#endif
}
/*
* 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)(ad, mode) == 0)
return 0;
/* is the new mode supported? */
if (vesa_get_info(ad, mode, &info))
return 1;
/* assert(VESA_MODE(mode)); */
#ifdef SC_VIDEO_DEBUG
printf("VESA: about to set a VESA mode...\n");
#endif
/*
* If the current mode is not a VESA mode, save the current state
* so that the adapter state can be restored later when a non-VESA
* mode is to be set up. See above.
*/
if (!VESA_MODE(vesa_adp->va_mode) && (vesa_state_buf == NULL)) {
len = vesa_save_state(ad, NULL, 0);
vesa_state_buf = malloc(len, M_DEVBUF, M_WAITOK);
if (vesa_save_state(ad, vesa_state_buf, len)) {
#ifdef SC_VIDEO_DEBUG
printf("VESA: state save failed! (len=%d)\n", len);
#endif
free(vesa_state_buf, M_DEVBUF);
vesa_state_buf = NULL;
return 1;
}
#ifdef SC_VIDEO_DEBUG
printf("VESA: saved (len=%d)\n", len);
dump_buffer(vesa_state_buf, len);
#endif
}
if (vesa_bios_set_mode(mode))
return 1;
#ifdef SC_VIDEO_DEBUG
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_BASE : MONO_BASE;
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;
if (info.vi_buffer_size == 0) {
vesa_adp->va_buffer = 0;
vesa_adp->va_buffer_size = 0;
} else {
vesa_adp->va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer);
vesa_adp->va_buffer_size = info.vi_buffer_size;
}
return 0;
}
static int
vesa_save_font(int ad, int page, int fontsize, u_char *data, int ch, int count)
{
return (*prevvidsw.save_font)(ad, page, fontsize, data, ch, count);
}
static int
vesa_load_font(int ad, int page, int fontsize, u_char *data, int ch, int count)
{
return (*prevvidsw.load_font)(ad, page, fontsize, data, ch, count);
}
static int
vesa_show_font(int ad, int page)
{
return (*prevvidsw.show_font)(ad, page);
}
static int
vesa_save_palette(int ad, u_char *palette)
{
if ((ad != vesa_adp->va_index) || !(vesa_adp_info->v_flags & V_DAC8)
|| vesa_bios_set_dac(8))
return (*prevvidsw.save_palette)(ad, palette);
return vesa_bios_save_palette(0, 256, palette);
}
static int
vesa_load_palette(int ad, u_char *palette)
{
if ((ad != vesa_adp->va_index) || !(vesa_adp_info->v_flags & V_DAC8)
|| vesa_bios_set_dac(8))
return (*prevvidsw.load_palette)(ad, palette);
return vesa_bios_load_palette(0, 256, palette);
}
static int
vesa_set_border(int ad, int color)
{
return (*prevvidsw.set_border)(ad, color);
}
static int
vesa_save_state(int ad, void *p, size_t size)
{
if (ad != vesa_adp->va_index)
return (*prevvidsw.save_state)(ad, 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(int ad, void *p)
{
if ((ad != vesa_adp->va_index)
|| (((adp_state_t *)p)->sig != V_STATE_SIG))
return (*prevvidsw.load_state)(ad, p);
return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
vesa_state_buf_size);
}
static int
vesa_set_origin(int ad, 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 (ad != vesa_adp->va_index)
return (*prevvidsw.set_win_org)(ad, offset);
if (vesa_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/vesa_adp->va_window_gran;
err = vm86_intcall(0x10, &vmf);
return ((err != 0) || (vmf.vmf_eax != 0x4f));
}
static int
vesa_read_hw_cursor(int ad, int *col, int *row)
{
return (*prevvidsw.read_hw_cursor)(ad, col, row);
}
static int
vesa_set_hw_cursor(int ad, int col, int row)
{
return (*prevvidsw.set_hw_cursor)(ad, col, row);
}
static int
vesa_diag(int level)
{
struct vesa_mode vmode;
u_int32_t p;
int i;
#ifndef VESA_MODULE
/* call the previous handler first */
(*prevvidsw.diag)(level);
#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 */
p = BIOS_SADDRTOLADDR(vesa_adp_info->v_oemstr);
if (p != 0)
printf("VESA: %s\n", (char *)BIOS_PADDRTOVADDR(p));
if (level <= 0)
return 0;
if (vesa_adp_info->v_version >= 0x0200) {
/* vendor name */
p = BIOS_SADDRTOLADDR(vesa_adp_info->v_venderstr);
if (p != 0)
printf("VESA: %s, ", (char *)BIOS_PADDRTOVADDR(p));
/* product name */
p = BIOS_SADDRTOLADDR(vesa_adp_info->v_prodstr);
if (p != 0)
printf("%s, ", (char *)BIOS_PADDRTOVADDR(p));
/* product revision */
p = BIOS_SADDRTOLADDR(vesa_adp_info->v_revstr);
if (p != 0)
printf("%s\n", (char *)BIOS_PADDRTOVADDR(p));
}
/* mode information */
for (i = 0; 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);
}
if (vmode.v_modeattr & V_MODELFB) {
printf(", mem:%d, LFB:0x%x, off:0x%x",
vmode.v_memmodel, vmode.v_lfb,
vmode.v_offscreen);
}
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);
}
return 0;
}
/* module loading */
#ifdef VESA_MODULE
static int
vesa_load(struct lkm_table *lkmtp, int cmd)
#else
int
vesa_load(void)
#endif
{
int adapters;
int error;
int s;
int i;
if (vesa_init_done)
return 0;
/*
* If the VESA module is statically linked to the kernel, or
* it has already been loaded, abort loading this module this time.
*/
vesa_adp = NULL;
adapters = (*biosvidsw.init)();
for (i = 0; i < adapters; ++i) {
if ((vesa_adp = (*biosvidsw.adapter)(i)) == NULL)
continue;
if (vesa_adp->va_flags & V_ADP_VESA)
return ENXIO;
if (vesa_adp->va_type == KD_VGA)
break;
}
/* if a VGA adapter is not found, abort */
if (i >= adapters)
return ENXIO;
if (vesa_bios_init())
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);
}
#ifdef VESA_MODULE
s = spltty();
#endif
if ((error = vesa_load_ioctl()) == 0) {
bcopy(&biosvidsw, &prevvidsw, sizeof(prevvidsw));
bcopy(&vesavidsw, &biosvidsw, sizeof(vesavidsw));
vesa_init_done = TRUE;
}
#ifdef VESA_MODULE
splx(s);
if (error == 0)
vesa_diag(bootverbose);
#endif
return error;
}
#ifdef VESA_MODULE
static int
vesa_unload(struct lkm_table *lkmtp, int cmd)
{
int error;
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)
vesa_adp->va_flags &= ~V_ADP_VESA;
bcopy(&prevvidsw, &biosvidsw, sizeof(biosvidsw));
}
splx(s);
return error;
}
int
vesa_mod(struct lkm_table *lkmtp, int cmd, int ver)
{
MOD_DISPATCH(vesa, lkmtp, cmd, ver,
vesa_load, vesa_unload, lkm_nullcmd);
}
#endif /* VESA_MODULE */
#endif /* (NSC > 0 && VESA && VM86) || VESA_MODULE */
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