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linux/drivers/video/console/promcon.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

600 lines
12 KiB
C
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/* $Id: promcon.c,v 1.17 2000/07/26 23:02:52 davem Exp $
* Console driver utilizing PROM sun terminal emulation
*
* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/console.h>
#include <linux/vt_kern.h>
#include <linux/selection.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/kd.h>
#include <asm/oplib.h>
#include <asm/uaccess.h>
static short pw = 80 - 1, ph = 34 - 1;
static short px, py;
static unsigned long promcon_uni_pagedir[2];
extern u8 promfont_unicount[];
extern u16 promfont_unitable[];
#define PROMCON_COLOR 0
#if PROMCON_COLOR
#define inverted(s) ((((s) & 0x7700) == 0x0700) ? 0 : 1)
#else
#define inverted(s) (((s) & 0x0800) ? 1 : 0)
#endif
static __inline__ void
promcon_puts(char *buf, int cnt)
{
prom_printf("%*.*s", cnt, cnt, buf);
}
static int
promcon_start(struct vc_data *conp, char *b)
{
unsigned short *s = (unsigned short *)
(conp->vc_origin + py * conp->vc_size_row + (px << 1));
u16 cs;
cs = scr_readw(s);
if (px == pw) {
unsigned short *t = s - 1;
u16 ct = scr_readw(t);
if (inverted(cs) && inverted(ct))
return sprintf(b, "\b\033[7m%c\b\033[@%c\033[m", cs,
ct);
else if (inverted(cs))
return sprintf(b, "\b\033[7m%c\033[m\b\033[@%c", cs,
ct);
else if (inverted(ct))
return sprintf(b, "\b%c\b\033[@\033[7m%c\033[m", cs,
ct);
else
return sprintf(b, "\b%c\b\033[@%c", cs, ct);
}
if (inverted(cs))
return sprintf(b, "\033[7m%c\033[m\b", cs);
else
return sprintf(b, "%c\b", cs);
}
static int
promcon_end(struct vc_data *conp, char *b)
{
unsigned short *s = (unsigned short *)
(conp->vc_origin + py * conp->vc_size_row + (px << 1));
char *p = b;
u16 cs;
b += sprintf(b, "\033[%d;%dH", py + 1, px + 1);
cs = scr_readw(s);
if (px == pw) {
unsigned short *t = s - 1;
u16 ct = scr_readw(t);
if (inverted(cs) && inverted(ct))
b += sprintf(b, "\b%c\b\033[@\033[7m%c\033[m", cs, ct);
else if (inverted(cs))
b += sprintf(b, "\b%c\b\033[@%c", cs, ct);
else if (inverted(ct))
b += sprintf(b, "\b\033[7m%c\b\033[@%c\033[m", cs, ct);
else
b += sprintf(b, "\b\033[7m%c\033[m\b\033[@%c", cs, ct);
return b - p;
}
if (inverted(cs))
b += sprintf(b, "%c\b", cs);
else
b += sprintf(b, "\033[7m%c\033[m\b", cs);
return b - p;
}
const char __init *promcon_startup(void)
{
const char *display_desc = "PROM";
int node;
char buf[40];
node = prom_getchild(prom_root_node);
node = prom_searchsiblings(node, "options");
if (prom_getproperty(node, "screen-#columns", buf, 40) != -1) {
pw = simple_strtoul(buf, NULL, 0);
if (pw < 10 || pw > 256)
pw = 80;
pw--;
}
if (prom_getproperty(node, "screen-#rows", buf, 40) != -1) {
ph = simple_strtoul(buf, NULL, 0);
if (ph < 10 || ph > 256)
ph = 34;
ph--;
}
promcon_puts("\033[H\033[J", 6);
return display_desc;
}
static void __init
promcon_init_unimap(struct vc_data *conp)
{
mm_segment_t old_fs = get_fs();
struct unipair *p, *p1;
u16 *q;
int i, j, k;
p = kmalloc(256*sizeof(struct unipair), GFP_KERNEL);
if (!p) return;
q = promfont_unitable;
p1 = p;
k = 0;
for (i = 0; i < 256; i++)
for (j = promfont_unicount[i]; j; j--) {
p1->unicode = *q++;
p1->fontpos = i;
p1++;
k++;
}
set_fs(KERNEL_DS);
con_clear_unimap(conp, NULL);
con_set_unimap(conp, k, p);
con_protect_unimap(conp, 1);
set_fs(old_fs);
kfree(p);
}
static void
promcon_init(struct vc_data *conp, int init)
{
unsigned long p;
conp->vc_can_do_color = PROMCON_COLOR;
if (init) {
conp->vc_cols = pw + 1;
conp->vc_rows = ph + 1;
}
p = *conp->vc_uni_pagedir_loc;
if (conp->vc_uni_pagedir_loc == &conp->vc_uni_pagedir ||
!--conp->vc_uni_pagedir_loc[1])
con_free_unimap(conp);
conp->vc_uni_pagedir_loc = promcon_uni_pagedir;
promcon_uni_pagedir[1]++;
if (!promcon_uni_pagedir[0] && p) {
promcon_init_unimap(conp);
}
if (!init) {
if (conp->vc_cols != pw + 1 || conp->vc_rows != ph + 1)
vc_resize(conp, pw + 1, ph + 1);
}
}
static void
promcon_deinit(struct vc_data *conp)
{
/* When closing the last console, reset video origin */
if (!--promcon_uni_pagedir[1])
con_free_unimap(conp);
conp->vc_uni_pagedir_loc = &conp->vc_uni_pagedir;
con_set_default_unimap(conp);
}
static int
promcon_switch(struct vc_data *conp)
{
return 1;
}
static unsigned short *
promcon_repaint_line(unsigned short *s, unsigned char *buf, unsigned char **bp)
{
int cnt = pw + 1;
int attr = -1;
unsigned char *b = *bp;
while (cnt--) {
u16 c = scr_readw(s);
if (attr != inverted(c)) {
attr = inverted(c);
if (attr) {
strcpy (b, "\033[7m");
b += 4;
} else {
strcpy (b, "\033[m");
b += 3;
}
}
*b++ = c;
s++;
if (b - buf >= 224) {
promcon_puts(buf, b - buf);
b = buf;
}
}
*bp = b;
return s;
}
static void
promcon_putcs(struct vc_data *conp, const unsigned short *s,
int count, int y, int x)
{
unsigned char buf[256], *b = buf;
unsigned short attr = scr_readw(s);
unsigned char save;
int i, last = 0;
if (console_blanked)
return;
if (count <= 0)
return;
b += promcon_start(conp, b);
if (x + count >= pw + 1) {
if (count == 1) {
x -= 1;
save = scr_readw((unsigned short *)(conp->vc_origin
+ y * conp->vc_size_row
+ (x << 1)));
if (px != x || py != y) {
b += sprintf(b, "\033[%d;%dH", y + 1, x + 1);
px = x;
py = y;
}
if (inverted(attr))
b += sprintf(b, "\033[7m%c\033[m", scr_readw(s++));
else
b += sprintf(b, "%c", scr_readw(s++));
strcpy(b, "\b\033[@");
b += 4;
if (inverted(save))
b += sprintf(b, "\033[7m%c\033[m", save);
else
b += sprintf(b, "%c", save);
px++;
b += promcon_end(conp, b);
promcon_puts(buf, b - buf);
return;
} else {
last = 1;
count = pw - x - 1;
}
}
if (inverted(attr)) {
strcpy(b, "\033[7m");
b += 4;
}
if (px != x || py != y) {
b += sprintf(b, "\033[%d;%dH", y + 1, x + 1);
px = x;
py = y;
}
for (i = 0; i < count; i++) {
if (b - buf >= 224) {
promcon_puts(buf, b - buf);
b = buf;
}
*b++ = scr_readw(s++);
}
px += count;
if (last) {
save = scr_readw(s++);
b += sprintf(b, "%c\b\033[@%c", scr_readw(s++), save);
px++;
}
if (inverted(attr)) {
strcpy(b, "\033[m");
b += 3;
}
b += promcon_end(conp, b);
promcon_puts(buf, b - buf);
}
static void
promcon_putc(struct vc_data *conp, int c, int y, int x)
{
unsigned short s;
if (console_blanked)
return;
scr_writew(c, &s);
promcon_putcs(conp, &s, 1, y, x);
}
static void
promcon_clear(struct vc_data *conp, int sy, int sx, int height, int width)
{
unsigned char buf[256], *b = buf;
int i, j;
if (console_blanked)
return;
b += promcon_start(conp, b);
if (!sx && width == pw + 1) {
if (!sy && height == ph + 1) {
strcpy(b, "\033[H\033[J");
b += 6;
b += promcon_end(conp, b);
promcon_puts(buf, b - buf);
return;
} else if (sy + height == ph + 1) {
b += sprintf(b, "\033[%dH\033[J", sy + 1);
b += promcon_end(conp, b);
promcon_puts(buf, b - buf);
return;
}
b += sprintf(b, "\033[%dH", sy + 1);
for (i = 1; i < height; i++) {
strcpy(b, "\033[K\n");
b += 4;
}
strcpy(b, "\033[K");
b += 3;
b += promcon_end(conp, b);
promcon_puts(buf, b - buf);
return;
} else if (sx + width == pw + 1) {
b += sprintf(b, "\033[%d;%dH", sy + 1, sx + 1);
for (i = 1; i < height; i++) {
strcpy(b, "\033[K\n");
b += 4;
}
strcpy(b, "\033[K");
b += 3;
b += promcon_end(conp, b);
promcon_puts(buf, b - buf);
return;
}
for (i = sy + 1; i <= sy + height; i++) {
b += sprintf(b, "\033[%d;%dH", i, sx + 1);
for (j = 0; j < width; j++)
*b++ = ' ';
if (b - buf + width >= 224) {
promcon_puts(buf, b - buf);
b = buf;
}
}
b += promcon_end(conp, b);
promcon_puts(buf, b - buf);
}
static void
promcon_bmove(struct vc_data *conp, int sy, int sx, int dy, int dx,
int height, int width)
{
char buf[256], *b = buf;
if (console_blanked)
return;
b += promcon_start(conp, b);
if (sy == dy && height == 1) {
if (dx > sx && dx + width == conp->vc_cols)
b += sprintf(b, "\033[%d;%dH\033[%d@\033[%d;%dH",
sy + 1, sx + 1, dx - sx, py + 1, px + 1);
else if (dx < sx && sx + width == conp->vc_cols)
b += sprintf(b, "\033[%d;%dH\033[%dP\033[%d;%dH",
dy + 1, dx + 1, sx - dx, py + 1, px + 1);
b += promcon_end(conp, b);
promcon_puts(buf, b - buf);
return;
}
/*
* FIXME: What to do here???
* Current console.c should not call it like that ever.
*/
prom_printf("\033[7mFIXME: bmove not handled\033[m\n");
}
static void
promcon_cursor(struct vc_data *conp, int mode)
{
char buf[32], *b = buf;
switch (mode) {
case CM_ERASE:
break;
case CM_MOVE:
case CM_DRAW:
b += promcon_start(conp, b);
if (px != conp->vc_x || py != conp->vc_y) {
px = conp->vc_x;
py = conp->vc_y;
b += sprintf(b, "\033[%d;%dH", py + 1, px + 1);
}
promcon_puts(buf, b - buf);
break;
}
}
static int
promcon_blank(struct vc_data *conp, int blank, int mode_switch)
{
if (blank) {
promcon_puts("\033[H\033[J\033[7m \033[m\b", 15);
return 0;
} else {
/* Let console.c redraw */
return 1;
}
}
static int
promcon_scroll(struct vc_data *conp, int t, int b, int dir, int count)
{
unsigned char buf[256], *p = buf;
unsigned short *s;
int i;
if (console_blanked)
return 0;
p += promcon_start(conp, p);
switch (dir) {
case SM_UP:
if (b == ph + 1) {
p += sprintf(p, "\033[%dH\033[%dM", t + 1, count);
px = 0;
py = t;
p += promcon_end(conp, p);
promcon_puts(buf, p - buf);
break;
}
s = (unsigned short *)(conp->vc_origin
+ (t + count) * conp->vc_size_row);
p += sprintf(p, "\033[%dH", t + 1);
for (i = t; i < b - count; i++)
s = promcon_repaint_line(s, buf, &p);
for (; i < b - 1; i++) {
strcpy(p, "\033[K\n");
p += 4;
if (p - buf >= 224) {
promcon_puts(buf, p - buf);
p = buf;
}
}
strcpy(p, "\033[K");
p += 3;
p += promcon_end(conp, p);
promcon_puts(buf, p - buf);
break;
case SM_DOWN:
if (b == ph + 1) {
p += sprintf(p, "\033[%dH\033[%dL", t + 1, count);
px = 0;
py = t;
p += promcon_end(conp, p);
promcon_puts(buf, p - buf);
break;
}
s = (unsigned short *)(conp->vc_origin + t * conp->vc_size_row);
p += sprintf(p, "\033[%dH", t + 1);
for (i = t; i < t + count; i++) {
strcpy(p, "\033[K\n");
p += 4;
if (p - buf >= 224) {
promcon_puts(buf, p - buf);
p = buf;
}
}
for (; i < b; i++)
s = promcon_repaint_line(s, buf, &p);
p += promcon_end(conp, p);
promcon_puts(buf, p - buf);
break;
}
return 0;
}
#if !(PROMCON_COLOR)
static u8 promcon_build_attr(struct vc_data *conp, u8 _color, u8 _intensity, u8 _blink, u8 _underline, u8 _reverse)
{
return (_reverse) ? 0xf : 0x7;
}
#endif
/*
* The console 'switch' structure for the VGA based console
*/
static int promcon_dummy(void)
{
return 0;
}
#define DUMMY (void *) promcon_dummy
const struct consw prom_con = {
.owner = THIS_MODULE,
.con_startup = promcon_startup,
.con_init = promcon_init,
.con_deinit = promcon_deinit,
.con_clear = promcon_clear,
.con_putc = promcon_putc,
.con_putcs = promcon_putcs,
.con_cursor = promcon_cursor,
.con_scroll = promcon_scroll,
.con_bmove = promcon_bmove,
.con_switch = promcon_switch,
.con_blank = promcon_blank,
.con_set_palette = DUMMY,
.con_scrolldelta = DUMMY,
#if !(PROMCON_COLOR)
.con_build_attr = promcon_build_attr,
#endif
};
void __init prom_con_init(void)
{
#ifdef CONFIG_DUMMY_CONSOLE
if (conswitchp == &dummy_con)
take_over_console(&prom_con, 0, MAX_NR_CONSOLES-1, 1);
else
#endif
if (conswitchp == &prom_con)
promcon_init_unimap(vc_cons[fg_console].d);
}
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