/*-
* Copyright (c) 1998 Michael Smith (msmith@freebsd.org)
* Copyright (c) 1997 Kazutaka YOKOTA (yokota@zodiac.mech.utsunomiya-u.ac.jp)
* 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.
* 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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: probe_keyboard.c,v 1.13 1997/06/09 05:10:55 bde Exp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stand.h>
#include <bootstrap.h>
#include <btxv86.h>
#include <machine/psl.h>
#include <machine/cpufunc.h>
#include <teken.h>
#include <stdbool.h>
#include <dev/vt/hw/vga/vt_vga_reg.h>
#include "libi386.h"
#if KEYBOARD_PROBE
static int probe_keyboard(void);
#endif
static void vidc_probe(struct console *cp);
static int vidc_init(int arg);
static void vidc_putchar(int c);
static int vidc_getchar(void);
static int vidc_ischar(void);
static int vidc_started;
static uint16_t *vgatext;
static tf_bell_t vidc_cons_bell;
static tf_cursor_t vidc_text_cursor;
static tf_putchar_t vidc_text_putchar;
static tf_fill_t vidc_text_fill;
static tf_copy_t vidc_text_copy;
static tf_param_t vidc_text_param;
static tf_respond_t vidc_cons_respond;
static teken_funcs_t tf = {
.tf_bell = vidc_cons_bell,
.tf_cursor = vidc_text_cursor,
.tf_putchar = vidc_text_putchar,
.tf_fill = vidc_text_fill,
.tf_copy = vidc_text_copy,
.tf_param = vidc_text_param,
.tf_respond = vidc_cons_respond,
};
teken_t teken;
teken_pos_t tp;
struct text_pixel {
teken_char_t c;
teken_attr_t a;
};
static struct text_pixel *buffer;
#define NCOLORS 16
/*
* Between console's palette and VGA's one:
* - blue and red are swapped (1 <-> 4)
* - yellow and cyan are swapped (3 <-> 6)
*/
static const int cons_to_vga_colors[NCOLORS] = {
0, 4, 2, 6, 1, 5, 3, 7,
8, 12, 10, 14, 9, 13, 11, 15
};
#define TEXT_COLS 80
#define TEXT_ROWS 25
#define KEYBUFSZ 10
static uint8_t keybuf[KEYBUFSZ]; /* keybuf for extended codes */
struct console vidconsole = {
.c_name = "vidconsole",
.c_desc = "internal video/keyboard",
.c_flags = 0,
.c_probe = vidc_probe,
.c_init = vidc_init,
.c_out = vidc_putchar,
.c_in = vidc_getchar,
.c_ready = vidc_ischar
};
static int
vga_get_reg(int reg, int index)
{
return (inb(reg + index));
}
static int
vga_get_atr(int reg, int i)
{
int ret;
(void) inb(reg + VGA_GEN_INPUT_STAT_1);
outb(reg + VGA_AC_WRITE, i);
ret = inb(reg + VGA_AC_READ);
(void) inb(reg + VGA_GEN_INPUT_STAT_1);
return (ret);
}
static void
vga_set_atr(int reg, int i, int v)
{
(void) inb(reg + VGA_GEN_INPUT_STAT_1);
outb(reg + VGA_AC_WRITE, i);
outb(reg + VGA_AC_WRITE, v);
(void) inb(reg + VGA_GEN_INPUT_STAT_1);
}
static void
vga_set_indexed(int reg, int indexreg, int datareg, uint8_t index, uint8_t val)
{
outb(reg + indexreg, index);
outb(reg + datareg, val);
}
static int
vga_get_indexed(int reg, int indexreg, int datareg, uint8_t index)
{
outb(reg + indexreg, index);
return (inb(reg + datareg));
}
static int
vga_get_crtc(int reg, int i)
{
return (vga_get_indexed(reg, VGA_CRTC_ADDRESS, VGA_CRTC_DATA, i));
}
static void
vga_set_crtc(int reg, int i, int v)
{
vga_set_indexed(reg, VGA_CRTC_ADDRESS, VGA_CRTC_DATA, i, v);
}
static void
vidc_text_set_cursor(teken_unit_t row, teken_unit_t col, bool visible)
{
uint16_t addr;
uint8_t msl, s, e;
msl = vga_get_crtc(VGA_REG_BASE, VGA_CRTC_MAX_SCAN_LINE) & 0x1f;
s = vga_get_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_START) & 0xC0;
e = vga_get_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_END);
if (visible == true) {
addr = row * TEXT_COLS + col;
vga_set_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_LOC_HIGH, addr >> 8);
vga_set_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_LOC_LOW,
addr & 0xff);
e = msl;
} else {
s |= (1<<5);
}
vga_set_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_START, s);
vga_set_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_END, e);
}
static void
vidc_text_get_cursor(teken_unit_t *row, teken_unit_t *col)
{
uint16_t addr;
addr = (vga_get_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_LOC_HIGH) << 8) +
vga_get_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_LOC_LOW);
*row = addr / TEXT_COLS;
*col = addr % TEXT_COLS;
}
/*
* Not implemented.
*/
static void
vidc_cons_bell(void *s __unused)
{
}
static void
vidc_text_cursor(void *s __unused, const teken_pos_t *p)
{
teken_unit_t row, col;
if (p->tp_col == TEXT_COLS)
col = p->tp_col - 1;
else
col = p->tp_col;
if (p->tp_row == TEXT_ROWS)
row = p->tp_row - 1;
else
row = p->tp_row;
vidc_text_set_cursor(row, col, true);
}
/*
* Binary searchable table for Unicode to CP437 conversion.
*/
struct unicp437 {
uint16_t unicode_base;
uint8_t cp437_base;
uint8_t length;
};
static const struct unicp437 cp437table[] = {
{ 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 },
{ 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 },
{ 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 },
{ 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 },
{ 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 },
{ 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 },
{ 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 },
{ 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 },
{ 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 },
{ 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 },
{ 0x00bf, 0xa8, 0x00 }, { 0x00c4, 0x8e, 0x01 },
{ 0x00c6, 0x92, 0x00 }, { 0x00c7, 0x80, 0x00 },
{ 0x00c9, 0x90, 0x00 }, { 0x00d1, 0xa5, 0x00 },
{ 0x00d6, 0x99, 0x00 }, { 0x00dc, 0x9a, 0x00 },
{ 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 },
{ 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 },
{ 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 },
{ 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 },
{ 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 },
{ 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 },
{ 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 },
{ 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 },
{ 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 },
{ 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 },
{ 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 },
{ 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 },
{ 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 },
{ 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 },
{ 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 },
{ 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 },
{ 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 },
{ 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 },
{ 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 },
{ 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 },
{ 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 },
{ 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 },
{ 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 },
{ 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 },
{ 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 },
{ 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 },
{ 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 },
{ 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 },
{ 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 },
{ 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 },
{ 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 },
{ 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 },
{ 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 },
{ 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 },
{ 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 },
{ 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 },
{ 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 },
{ 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 },
{ 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 },
{ 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 },
{ 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 },
{ 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 },
{ 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 },
{ 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 },
{ 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 },
{ 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 },
{ 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 },
{ 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 },
{ 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 },
{ 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 },
{ 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 },
{ 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 },
{ 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 },
{ 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 },
{ 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 },
{ 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 },
{ 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 },
{ 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 },
{ 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 },
{ 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 },
{ 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 },
{ 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 },
{ 0x25ac, 0x16, 0x00 }, { 0x25b2, 0x1e, 0x00 },
{ 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 },
{ 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 },
{ 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 },
{ 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 },
{ 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 },
{ 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 },
{ 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x00 },
{ 0x266c, 0x0e, 0x00 }
};
static uint8_t
vga_get_cp437(teken_char_t c)
{
int min, mid, max;
min = 0;
max = (sizeof(cp437table) / sizeof(struct unicp437)) - 1;
if (c < cp437table[0].unicode_base ||
c > cp437table[max].unicode_base + cp437table[max].length)
return ('?');
while (max >= min) {
mid = (min + max) / 2;
if (c < cp437table[mid].unicode_base)
max = mid - 1;
else if (c > cp437table[mid].unicode_base +
cp437table[mid].length)
min = mid + 1;
else
return (c - cp437table[mid].unicode_base +
cp437table[mid].cp437_base);
}
return ('?');
}
static void
vidc_text_printchar(const teken_pos_t *p)
{
int i;
uint8_t attr;
struct text_pixel *px;
teken_color_t fg, bg, tmp;
struct cgatext {
uint8_t ch;
uint8_t attr;
} *addr;
px = buffer + p->tp_col + p->tp_row * tp.tp_col;
fg = teken_256to16(px->a.ta_fgcolor);
bg = teken_256to16(px->a.ta_bgcolor);
if (px->a.ta_format & TF_BOLD)
fg |= TC_LIGHT;
if (px->a.ta_format & TF_BLINK)
bg |= TC_LIGHT;
if (px->a.ta_format & TF_REVERSE) {
tmp = fg;
fg = bg;
bg = tmp;
}
attr = (cons_to_vga_colors[bg & 0xf] << 4) |
cons_to_vga_colors[fg & 0xf];
addr = (struct cgatext *)vgatext + p->tp_col + p->tp_row * tp.tp_col;
addr->ch = vga_get_cp437(px->c);
addr->attr = attr;
}
static void
vidc_text_putchar(void *s __unused, const teken_pos_t *p, teken_char_t c,
const teken_attr_t *a)
{
int attr, idx;
idx = p->tp_col + p->tp_row * tp.tp_col;
buffer[idx].c = c;
buffer[idx].a = *a;
vidc_text_printchar(p);
}
static void
vidc_text_fill(void *s, const teken_rect_t *r, teken_char_t c,
const teken_attr_t *a)
{
teken_pos_t p;
teken_unit_t row, col;
vidc_text_get_cursor(&row, &col);
vidc_text_set_cursor(row, col, false);
for (p.tp_row = r->tr_begin.tp_row; p.tp_row < r->tr_end.tp_row;
p.tp_row++)
for (p.tp_col = r->tr_begin.tp_col;
p.tp_col < r->tr_end.tp_col; p.tp_col++)
vidc_text_putchar(s, &p, c, a);
vidc_text_set_cursor(row, col, true);
}
static bool
vidc_same_pixel(struct text_pixel *px1, struct text_pixel *px2)
{
if (px1->c != px2->c)
return (false);
if (px1->a.ta_format != px2->a.ta_format)
return (false);
if (px1->a.ta_fgcolor != px2->a.ta_fgcolor)
return (false);
if (px1->a.ta_bgcolor != px2->a.ta_bgcolor)
return (false);
return (true);
}
static void
vidc_text_copy(void *ptr __unused, const teken_rect_t *r, const teken_pos_t *p)
{
int srow, drow;
int nrow, ncol, x, y; /* Has to be signed - >= 0 comparison */
teken_pos_t d, s;
teken_unit_t row, col;
/*
* Copying is a little tricky. We must make sure we do it in
* correct order, to make sure we don't overwrite our own data.
*/
nrow = r->tr_end.tp_row - r->tr_begin.tp_row;
ncol = r->tr_end.tp_col - r->tr_begin.tp_col;
vidc_text_get_cursor(&row, &col);
vidc_text_set_cursor(row, col, false);
if (p->tp_row < r->tr_begin.tp_row) {
/* Copy from bottom to top. */
for (y = 0; y < nrow; y++) {
d.tp_row = p->tp_row + y;
s.tp_row = r->tr_begin.tp_row + y;
drow = d.tp_row * tp.tp_col;
srow = s.tp_row * tp.tp_col;
for (x = 0; x < ncol; x++) {
d.tp_col = p->tp_col + x;
s.tp_col = r->tr_begin.tp_col + x;
if (!vidc_same_pixel(
&buffer[d.tp_col + drow],
&buffer[s.tp_col + srow])) {
buffer[d.tp_col + drow] =
buffer[s.tp_col + srow];
vidc_text_printchar(&d);
}
}
}
} else {
/* Copy from top to bottom. */
if (p->tp_col < r->tr_begin.tp_col) {
/* Copy from right to left. */
for (y = nrow - 1; y >= 0; y--) {
d.tp_row = p->tp_row + y;
s.tp_row = r->tr_begin.tp_row + y;
drow = d.tp_row * tp.tp_col;
srow = s.tp_row * tp.tp_col;
for (x = 0; x < ncol; x++) {
d.tp_col = p->tp_col + x;
s.tp_col = r->tr_begin.tp_col + x;
if (!vidc_same_pixel(
&buffer[d.tp_col + drow],
&buffer[s.tp_col + srow])) {
buffer[d.tp_col + drow] =
buffer[s.tp_col + srow];
vidc_text_printchar(&d);
}
}
}
} else {
/* Copy from left to right. */
for (y = nrow - 1; y >= 0; y--) {
d.tp_row = p->tp_row + y;
s.tp_row = r->tr_begin.tp_row + y;
drow = d.tp_row * tp.tp_col;
srow = s.tp_row * tp.tp_col;
for (x = ncol - 1; x >= 0; x--) {
d.tp_col = p->tp_col + x;
s.tp_col = r->tr_begin.tp_col + x;
if (!vidc_same_pixel(
&buffer[d.tp_col + drow],
&buffer[s.tp_col + srow])) {
buffer[d.tp_col + drow] =
buffer[s.tp_col + srow];
vidc_text_printchar(&d);
}
}
}
}
}
vidc_text_set_cursor(row, col, true);
}
static void
vidc_text_param(void *s __unused, int cmd, unsigned int value)
{
teken_unit_t row, col;
switch (cmd) {
case TP_SETLOCALCURSOR:
/*
* 0 means normal (usually block), 1 means hidden, and
* 2 means blinking (always block) for compatibility with
* syscons. We don't support any changes except hiding,
* so must map 2 to 0.
*/
value = (value == 1) ? 0 : 1;
/* FALLTHROUGH */
case TP_SHOWCURSOR:
vidc_text_get_cursor(&row, &col);
if (value == 1)
vidc_text_set_cursor(row, col, true);
else
vidc_text_set_cursor(row, col, false);
break;
default:
/* Not yet implemented */
break;
}
}
/*
* Not implemented.
*/
static void
vidc_cons_respond(void *s __unused, const void *buf __unused,
size_t len __unused)
{
}
static void
vidc_probe(struct console *cp)
{
/* look for a keyboard */
#if KEYBOARD_PROBE
if (probe_keyboard())
#endif
{
cp->c_flags |= C_PRESENTIN;
}
/* XXX for now, always assume we can do BIOS screen output */
cp->c_flags |= C_PRESENTOUT;
}
static bool
color_name_to_teken(const char *name, int *val)
{
if (strcasecmp(name, "black") == 0) {
*val = TC_BLACK;
return (true);
}
if (strcasecmp(name, "red") == 0) {
*val = TC_RED;
return (true);
}
if (strcasecmp(name, "green") == 0) {
*val = TC_GREEN;
return (true);
}
if (strcasecmp(name, "brown") == 0) {
*val = TC_BROWN;
return (true);
}
if (strcasecmp(name, "blue") == 0) {
*val = TC_BLUE;
return (true);
}
if (strcasecmp(name, "magenta") == 0) {
*val = TC_MAGENTA;
return (true);
}
if (strcasecmp(name, "cyan") == 0) {
*val = TC_CYAN;
return (true);
}
if (strcasecmp(name, "white") == 0) {
*val = TC_WHITE;
return (true);
}
return (false);
}
static int
vidc_set_colors(struct env_var *ev, int flags, const void *value)
{
int val = 0;
char buf[2];
const void *evalue;
const teken_attr_t *ap;
teken_attr_t a;
if (value == NULL)
return (CMD_OK);
if (color_name_to_teken(value, &val)) {
snprintf(buf, sizeof (buf), "%d", val);
evalue = buf;
} else {
char *end;
errno = 0;
val = (int)strtol(value, &end, 0);
if (errno != 0 || *end != '\0') {
printf("Allowed values are either ansi color name or "
"number from range [0-7].\n");
return (CMD_OK);
}
evalue = value;
}
ap = teken_get_defattr(&teken);
a = *ap;
if (strcmp(ev->ev_name, "teken.fg_color") == 0) {
/* is it already set? */
if (ap->ta_fgcolor == val)
return (CMD_OK);
a.ta_fgcolor = val;
}
if (strcmp(ev->ev_name, "teken.bg_color") == 0) {
/* is it already set? */
if (ap->ta_bgcolor == val)
return (CMD_OK);
a.ta_bgcolor = val;
}
/* Improve visibility */
if (a.ta_bgcolor == TC_WHITE)
a.ta_bgcolor |= TC_LIGHT;
env_setenv(ev->ev_name, flags | EV_NOHOOK, evalue, NULL, NULL);
teken_set_defattr(&teken, &a);
return (CMD_OK);
}
static int
vidc_init(int arg)
{
const teken_attr_t *a;
int val;
char env[8];
if (vidc_started && arg == 0)
return (0);
vidc_started = 1;
/*
* Check Miscellaneous Output Register (Read at 3CCh, Write at 3C2h)
* for bit 1 (Input/Output Address Select), which means
* color/graphics adapter.
*/
if (vga_get_reg(VGA_REG_BASE, VGA_GEN_MISC_OUTPUT_R) & VGA_GEN_MO_IOA)
vgatext = (uint16_t *)PTOV(VGA_TXT_BASE);
else
vgatext = (uint16_t *)PTOV(VGA_MEM_BASE + VGA_MEM_SIZE);
/* set 16bit colors */
val = vga_get_atr(VGA_REG_BASE, VGA_AC_MODE_CONTROL);
val &= ~VGA_AC_MC_BI;
val &= ~VGA_AC_MC_ELG;
vga_set_atr(VGA_REG_BASE, VGA_AC_MODE_CONTROL, val);
tp.tp_row = TEXT_ROWS;
tp.tp_col = TEXT_COLS;
buffer = malloc(tp.tp_row * tp.tp_col * sizeof(*buffer));
if (buffer == NULL)
return (1);
snprintf(env, sizeof (env), "%u", tp.tp_row);
setenv("LINES", env, 1);
snprintf(env, sizeof (env), "%u", tp.tp_col);
setenv("COLUMNS", env, 1);
teken_init(&teken, &tf, NULL);
teken_set_winsize(&teken, &tp);
a = teken_get_defattr(&teken);
snprintf(env, sizeof(env), "%d", a->ta_fgcolor);
env_setenv("teken.fg_color", EV_VOLATILE, env, vidc_set_colors,
env_nounset);
snprintf(env, sizeof(env), "%d", a->ta_bgcolor);
env_setenv("teken.bg_color", EV_VOLATILE, env, vidc_set_colors,
env_nounset);
for (int row = 0; row < tp.tp_row; row++)
for (int col = 0; col < tp.tp_col; col++) {
buffer[col + row * tp.tp_col].c = ' ';
buffer[col + row * tp.tp_col].a = *a;
}
for (int i = 0; i < 10 && vidc_ischar(); i++)
(void) vidc_getchar();
return (0); /* XXX reinit? */
}
void
vidc_biosputchar(int c)
{
v86.ctl = 0;
v86.addr = 0x10;
v86.eax = 0xe00 | (c & 0xff);
v86.ebx = 0x7;
v86int();
}
static void
vidc_putchar(int c)
{
unsigned char ch = c;
if (buffer != NULL)
teken_input(&teken, &ch, sizeof (ch));
else
vidc_biosputchar(c);
}
static int
vidc_getchar(void)
{
int i, c;
for (i = 0; i < KEYBUFSZ; i++) {
if (keybuf[i] != 0) {
c = keybuf[i];
keybuf[i] = 0;
return (c);
}
}
if (vidc_ischar()) {
v86.ctl = 0;
v86.addr = 0x16;
v86.eax = 0x0;
v86int();
if ((v86.eax & 0xff) != 0) {
return (v86.eax & 0xff);
}
/* extended keys */
switch (v86.eax & 0xff00) {
case 0x4800: /* up */
keybuf[0] = '[';
keybuf[1] = 'A';
return (0x1b); /* esc */
case 0x4b00: /* left */
keybuf[0] = '[';
keybuf[1] = 'D';
return (0x1b); /* esc */
case 0x4d00: /* right */
keybuf[0] = '[';
keybuf[1] = 'C';
return (0x1b); /* esc */
case 0x5000: /* down */
keybuf[0] = '[';
keybuf[1] = 'B';
return (0x1b); /* esc */
default:
return (-1);
}
} else {
return (-1);
}
}
static int
vidc_ischar(void)
{
int i;
for (i = 0; i < KEYBUFSZ; i++) {
if (keybuf[i] != 0) {
return (1);
}
}
v86.ctl = V86_FLAGS;
v86.addr = 0x16;
v86.eax = 0x100;
v86int();
return (!V86_ZR(v86.efl));
}
#if KEYBOARD_PROBE
#define PROBE_MAXRETRY 5
#define PROBE_MAXWAIT 400
#define IO_DUMMY 0x84
#define IO_KBD 0x060 /* 8042 Keyboard */
/* selected defines from kbdio.h */
#define KBD_STATUS_PORT 4 /* status port, read */
#define KBD_DATA_PORT 0 /* data port, read/write
* also used as keyboard command
* and mouse command port
*/
#define KBDC_ECHO 0x00ee
#define KBDS_ANY_BUFFER_FULL 0x0001
#define KBDS_INPUT_BUFFER_FULL 0x0002
#define KBD_ECHO 0x00ee
/* 7 microsec delay necessary for some keyboard controllers */
static void
delay7(void)
{
/*
* I know this is broken, but no timer is available yet at this stage...
* See also comments in `delay1ms()'.
*/
inb(IO_DUMMY); inb(IO_DUMMY);
inb(IO_DUMMY); inb(IO_DUMMY);
inb(IO_DUMMY); inb(IO_DUMMY);
}
/*
* This routine uses an inb to an unused port, the time to execute that
* inb is approximately 1.25uS. This value is pretty constant across
* all CPU's and all buses, with the exception of some PCI implentations
* that do not forward this I/O address to the ISA bus as they know it
* is not a valid ISA bus address, those machines execute this inb in
* 60 nS :-(.
*
*/
static void
delay1ms(void)
{
int i = 800;
while (--i >= 0)
(void) inb(0x84);
}
/*
* We use the presence/absence of a keyboard to determine whether the internal
* console can be used for input.
*
* Perform a simple test on the keyboard; issue the ECHO command and see
* if the right answer is returned. We don't do anything as drastic as
* full keyboard reset; it will be too troublesome and take too much time.
*/
static int
probe_keyboard(void)
{
int retry = PROBE_MAXRETRY;
int wait;
int i;
while (--retry >= 0) {
/* flush any noise */
while (inb(IO_KBD + KBD_STATUS_PORT) & KBDS_ANY_BUFFER_FULL) {
delay7();
inb(IO_KBD + KBD_DATA_PORT);
delay1ms();
}
/* wait until the controller can accept a command */
for (wait = PROBE_MAXWAIT; wait > 0; --wait) {
if (((i = inb(IO_KBD + KBD_STATUS_PORT))
& (KBDS_INPUT_BUFFER_FULL | KBDS_ANY_BUFFER_FULL))
== 0)
break;
if (i & KBDS_ANY_BUFFER_FULL) {
delay7();
inb(IO_KBD + KBD_DATA_PORT);
}
delay1ms();
}
if (wait <= 0)
continue;
/* send the ECHO command */
outb(IO_KBD + KBD_DATA_PORT, KBDC_ECHO);
/* wait for a response */
for (wait = PROBE_MAXWAIT; wait > 0; --wait) {
if (inb(IO_KBD + KBD_STATUS_PORT) &
KBDS_ANY_BUFFER_FULL)
break;
delay1ms();
}
if (wait <= 0)
continue;
delay7();
i = inb(IO_KBD + KBD_DATA_PORT);
#ifdef PROBE_KBD_BEBUG
printf("probe_keyboard: got 0x%x.\n", i);
#endif
if (i == KBD_ECHO) {
/* got the right answer */
return (1);
}
}
return (0);
}
#endif /* KEYBOARD_PROBE */
