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3.18 utf8 #249

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3.18 utf8 #249

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c7bfa14
[vt] fix 255 glyph limit, prepare for CJK font support
microcai Jan 9, 2015
5a8d700
[vt] diable setfont if we have cjk font in kernel
microcai Feb 21, 2011
18e073a
[vt] add cjk font that has 65536 chars
microcai Jan 12, 2011
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5 changes: 3 additions & 2 deletions drivers/tty/vt/selection.c
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Original file line number Diff line number Diff line change
Expand Up @@ -59,8 +59,7 @@ static inline void highlight_pointer(const int where)
static u16
sel_pos(int n)
{
return inverse_translate(sel_cons, screen_glyph(sel_cons, n),
use_unicode);
return screen_glyph(sel_cons, n);
}

/**
Expand Down Expand Up @@ -322,6 +321,8 @@ int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *t
}
obp = bp;
}
if (c > 0x80)
i += 2;
}
sel_buffer_lth = bp - sel_buffer;
return 0;
Expand Down
109 changes: 89 additions & 20 deletions drivers/tty/vt/vt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -292,6 +292,20 @@ static inline unsigned short *screenpos(struct vc_data *vc, int offset, int view
return p;
}

static inline unsigned short *screenpos_utf8(struct vc_data *vc, int offset, int viewed)
{
unsigned short *p;

if (!viewed)
p = (unsigned short *)(vc->vc_origin + offset + vc->vc_screenbuf_size);
else if (!vc->vc_sw->con_screen_pos)
p = (unsigned short *)(vc->vc_visible_origin + offset + vc->vc_screenbuf_size);
else
p = vc->vc_sw->con_screen_pos(vc, -offset - 1);
return p;
}


/* Called from the keyboard irq path.. */
static inline void scrolldelta(int lines)
{
Expand Down Expand Up @@ -322,6 +336,11 @@ static void scrup(struct vc_data *vc, unsigned int t, unsigned int b, int nr)
scr_memmovew(d, s, (b - t - nr) * vc->vc_size_row);
scr_memsetw(d + (b - t - nr) * vc->vc_cols, vc->vc_video_erase_char,
vc->vc_size_row * nr);
d += (vc->vc_screenbuf_size >> 1);
s += (vc->vc_screenbuf_size >> 1);
scr_memmovew(d, s, (b - t - nr) * vc->vc_size_row);
scr_memsetw(d + (b - t - nr) * vc->vc_cols, 0,
vc->vc_size_row * nr);
}

static void scrdown(struct vc_data *vc, unsigned int t, unsigned int b, int nr)
Expand All @@ -339,6 +358,9 @@ static void scrdown(struct vc_data *vc, unsigned int t, unsigned int b, int nr)
step = vc->vc_cols * nr;
scr_memmovew(s + step, s, (b - t - nr) * vc->vc_size_row);
scr_memsetw(s, vc->vc_video_erase_char, 2 * step);
s += (vc->vc_screenbuf_size >> 1);
scr_memmovew(s + step, s, (b - t - nr) * vc->vc_size_row);
scr_memsetw(s, 0, 2 * step);
}

static void do_update_region(struct vc_data *vc, unsigned long start, int count)
Expand Down Expand Up @@ -506,14 +528,16 @@ void complement_pos(struct vc_data *vc, int offset)
static int old_offset = -1;
static unsigned short old;
static unsigned short oldx, oldy;
static unsigned short *p_ext = NULL;
static unsigned short old_ext = 0;

WARN_CONSOLE_UNLOCKED();

if (old_offset != -1 && old_offset >= 0 &&
old_offset < vc->vc_screenbuf_size) {
scr_writew(old, screenpos(vc, old_offset, 1));
if (DO_UPDATE(vc))
vc->vc_sw->con_putc(vc, old, oldy, oldx);
vc->vc_sw->con_putc(vc, (old_ext << 16)|old, oldy, oldx);
}

old_offset = offset;
Expand All @@ -523,13 +547,15 @@ void complement_pos(struct vc_data *vc, int offset)
unsigned short new;
unsigned short *p;
p = screenpos(vc, offset, 1);
p_ext = screenpos_utf8(vc, offset, 1);
old = scr_readw(p);
old_ext = scr_readw(p_ext);
new = old ^ vc->vc_complement_mask;
scr_writew(new, p);
if (DO_UPDATE(vc)) {
oldx = (offset >> 1) % vc->vc_cols;
oldy = (offset >> 1) / vc->vc_cols;
vc->vc_sw->con_putc(vc, new, oldy, oldx);
vc->vc_sw->con_putc(vc, (old_ext << 16)|new, oldy, oldx);
}
}

Expand Down Expand Up @@ -777,7 +803,7 @@ int vc_allocate(unsigned int currcons) /* return 0 on success */
visual_init(vc, currcons, 1);
if (!*vc->vc_uni_pagedir_loc)
con_set_default_unimap(vc);
vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL);
vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size * 2, GFP_KERNEL);
if (!vc->vc_screenbuf) {
kfree(vc);
vc_cons[currcons].d = NULL;
Expand Down Expand Up @@ -837,7 +863,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
{
unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0;
unsigned long end;
unsigned int old_rows, old_row_size;
unsigned int old_rows, old_row_size,old_screen_size;
unsigned int new_cols, new_rows, new_row_size, new_screen_size;
unsigned int user;
unsigned short *newscreen;
Expand All @@ -857,11 +883,12 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
new_rows = (lines ? lines : vc->vc_rows);
new_row_size = new_cols << 1;
new_screen_size = new_row_size * new_rows;
old_screen_size = old_rows * old_row_size;

if (new_cols == vc->vc_cols && new_rows == vc->vc_rows)
return 0;

newscreen = kmalloc(new_screen_size, GFP_USER);
newscreen = kmalloc(new_screen_size * 2, GFP_USER);
if (!newscreen)
return -ENOMEM;

Expand Down Expand Up @@ -908,15 +935,23 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
while (old_origin < end) {
scr_memcpyw((unsigned short *) new_origin,
(unsigned short *) old_origin, rlth);
if (rrem)
scr_memcpyw((unsigned short *) new_origin + (new_screen_size >> 1),
(unsigned short *) old_origin + (old_screen_size >> 1), rlth);
if (rrem){
scr_memsetw((void *)(new_origin + rlth),
vc->vc_video_erase_char, rrem);
scr_memsetw((void *)(new_origin + rlth + (new_screen_size)),
vc->vc_video_erase_char, rrem);
}
old_origin += old_row_size;
new_origin += new_row_size;
}
if (new_scr_end > new_origin)
if (new_scr_end > new_origin){
scr_memsetw((void *)new_origin, vc->vc_video_erase_char,
new_scr_end - new_origin);
scr_memsetw((void *)new_origin + (new_screen_size), vc->vc_video_erase_char,
new_scr_end - new_origin);
}
kfree(vc->vc_screenbuf);
vc->vc_screenbuf = newscreen;
vc->vc_screenbuf_size = new_screen_size;
Expand Down Expand Up @@ -2206,6 +2241,8 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
rescan = 0;
inverse = 0;
width = 1;
vc->vc_utf = 1;
vc->vc_disp_ctrl = 0;

/* Do no translation at all in control states */
if (vc->vc_state != ESnormal) {
Expand Down Expand Up @@ -2273,7 +2310,7 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
continue;
}
}
/* Nothing to do if an ASCII byte was received */

}
/* End of UTF-8 decoding. */
/* c is the received character, or U+FFFD for invalid sequences. */
Expand Down Expand Up @@ -2359,10 +2396,30 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
}
if (vc->vc_decim)
insert_char(vc, 1);
scr_writew(himask ?
((vc_attr << 8) & ~himask) + ((tc & 0x100) ? himask : 0) + (tc & 0xff) :
(vc_attr << 8) + tc,
(u16 *) vc->vc_pos);

if(is_double_width(c) && width==2)
{
tc = 0xFF;
scr_writew(himask ?
((vc_attr << 8) & ~himask) + ((tc & 0x100) ? himask : 0) + (tc & 0xff) :
(vc_attr << 8) + tc,
(u16 *) vc->vc_pos);
scr_writew(c, (u16 *) vc->vc_pos + (vc->vc_screenbuf_size >> 1));
}else if(is_double_width(c) && width==1){
tc = 0xFE;
scr_writew(himask ?
((vc_attr << 8) & ~himask) + ((tc & 0x100) ? himask : 0) + (tc & 0xff) :
(vc_attr << 8) + tc,
(u16 *) vc->vc_pos);
scr_writew(c, (u16 *) vc->vc_pos + (vc->vc_screenbuf_size >> 1));
}else{
scr_writew(himask ?
((vc_attr << 8) & ~himask) + ((tc & 0x100) ? himask : 0) + (tc & 0xff) :
(vc_attr << 8) + tc,
(u16 *) vc->vc_pos);
scr_writew(c, (u16 *) vc->vc_pos + (vc->vc_screenbuf_size >> 1));
}

if (DO_UPDATE(vc) && draw_x < 0) {
draw_x = vc->vc_x;
draw_from = vc->vc_pos;
Expand All @@ -2379,11 +2436,12 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co

tc = conv_uni_to_pc(vc, ' '); /* A space is printed in the second column */
if (tc < 0) tc = ' ';
}
notify_write(vc, c);

if (inverse) {
FLUSH
notify_write(vc, c);

if (inverse) {
FLUSH
}
}

if (rescan) {
Expand Down Expand Up @@ -2978,7 +3036,7 @@ static int __init con_init(void)
INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
tty_port_init(&vc->port);
visual_init(vc, currcons, 1);
vc->vc_screenbuf = kzalloc(vc->vc_screenbuf_size, GFP_NOWAIT);
vc->vc_screenbuf = kzalloc(vc->vc_screenbuf_size * 2, GFP_NOWAIT);
vc_init(vc, vc->vc_rows, vc->vc_cols,
currcons || !vc->vc_sw->con_save_screen);
}
Expand Down Expand Up @@ -4184,6 +4242,11 @@ static int con_font_copy(struct vc_data *vc, struct console_font_op *op)

int con_font_op(struct vc_data *vc, struct console_font_op *op)
{
/* IF WE ENABLE CJK font, I won't let you guys set console font any way until
we found a way to set console font that is unicode capable
*/
if(vc->vc_font.charcount > op->charcount)
return 0;
switch (op->op) {
case KD_FONT_OP_SET:
return con_font_set(vc, op);
Expand All @@ -4207,9 +4270,15 @@ u16 screen_glyph(struct vc_data *vc, int offset)
u16 w = scr_readw(screenpos(vc, offset, 1));
u16 c = w & 0xff;

if (w & vc->vc_hi_font_mask)
c |= 0x100;
return c;
u16 c_utf8 = scr_readw(screenpos_utf8(vc, offset, 1));

if ( (c == 0xff || c == 0xfe) && c_utf8 != 0){
return c_utf8;
}else{
if (w & vc->vc_hi_font_mask)
c |= 0x100;
return c;
}
}
EXPORT_SYMBOL_GPL(screen_glyph);

Expand Down
1 change: 1 addition & 0 deletions drivers/video/console/Makefile
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
# 5 Aug 1999, James Simmons, <mailto:jsimmons@users.sf.net>
# Rewritten to use lists instead of if-statements.

# Font handling
obj-$(CONFIG_DUMMY_CONSOLE) += dummycon.o
obj-$(CONFIG_SGI_NEWPORT_CONSOLE) += newport_con.o
obj-$(CONFIG_STI_CONSOLE) += sticon.o sticore.o
Expand Down
57 changes: 49 additions & 8 deletions drivers/video/console/bitblit.c
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
* more details.
*/

#include <linux/font.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>
Expand Down Expand Up @@ -43,6 +44,21 @@ static void update_attr(u8 *dst, u8 *src, int attribute,
}
}

static inline u16 utf8_pos(struct vc_data *vc, const unsigned short *utf8)
{
unsigned long p = (long)utf8;
if (p >= vc->vc_origin && p < vc->vc_scr_end) {
return scr_readw((unsigned short *)(p + vc->vc_screenbuf_size));
} else if (vc->vc_num == fg_console && fbcon_is_softback(utf8)){
return scr_readw((unsigned short *)(p + fbcon_softback_size));
} else {
u16 extra_c;
int c = *(int*)utf8;
extra_c = (c >> 16 ) & 0x0000ffff;
return extra_c;
}
}

static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int dy, int dx, int height, int width)
{
Expand Down Expand Up @@ -74,6 +90,34 @@ static void bit_clear(struct vc_data *vc, struct fb_info *info, int sy,
info->fbops->fb_fillrect(info, &region);
}

u8 * font_bits(struct vc_data *vc, const u16 *s,u32 cellsize,
u16 charmask)
{
u32 utf8_c;

u8 *src = vc->vc_font.data + (scr_readw(s)&
charmask)*cellsize;

utf8_c = utf8_pos(vc, s);

if( utf8_c <= vc->vc_font.charcount)
{
/*
* decide left-half char or right-half char.
* Since non-English chars may double weight
*/
switch (scr_readw(s) & charmask) {
case 0xff:
src = vc->vc_font.data + (utf8_c * cellsize *2 );
break;
case 0xfe:
src = vc->vc_font.data + (utf8_c * cellsize *2 + cellsize);
break;
}
}
return src;
}

static inline void bit_putcs_aligned(struct vc_data *vc, struct fb_info *info,
const u16 *s, u32 attr, u32 cnt,
u32 d_pitch, u32 s_pitch, u32 cellsize,
Expand All @@ -84,14 +128,12 @@ static inline void bit_putcs_aligned(struct vc_data *vc, struct fb_info *info,
u8 *src;

while (cnt--) {
src = vc->vc_font.data + (scr_readw(s++)&
charmask)*cellsize;
src = font_bits(vc,s++,cellsize,charmask);

if (attr) {
update_attr(buf, src, attr, vc);
src = buf;
}

if (likely(idx == 1))
__fb_pad_aligned_buffer(dst, d_pitch, src, idx,
image->height);
Expand Down Expand Up @@ -119,14 +161,11 @@ static inline void bit_putcs_unaligned(struct vc_data *vc,
u8 *src;

while (cnt--) {
src = vc->vc_font.data + (scr_readw(s++)&
charmask)*cellsize;

src = font_bits(vc,s++,cellsize,charmask);
if (attr) {
update_attr(buf, src, attr, vc);
src = buf;
}

fb_pad_unaligned_buffer(dst, d_pitch, src, idx,
image->height, shift_high,
shift_low, mod);
Expand Down Expand Up @@ -245,6 +284,8 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
int err = 1;
char *src;

int cellsize = DIV_ROUND_UP(vc->vc_font.width,8) * vc->vc_font.height;

cursor.set = 0;

if (softback_lines) {
Expand All @@ -258,7 +299,7 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,

c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height));
src = font_bits(vc,(u16*)vc->vc_pos,cellsize,charmask);

if (ops->cursor_state.image.data != src ||
ops->cursor_reset) {
Expand Down
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