mirror of https://gitee.com/openkylin/linux.git
419 lines
10 KiB
C
419 lines
10 KiB
C
/*
|
|
* linux/drivers/video/console/bitblit.c -- BitBlitting Operation
|
|
*
|
|
* Originally from the 'accel_*' routines in drivers/video/console/fbcon.c
|
|
*
|
|
* Copyright (C) 2004 Antonino Daplas <adaplas @pol.net>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive for
|
|
* more details.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/vt_kern.h>
|
|
#include <linux/console.h>
|
|
#include <asm/types.h>
|
|
#include "fbcon.h"
|
|
|
|
/*
|
|
* Accelerated handlers.
|
|
*/
|
|
static void update_attr(u8 *dst, u8 *src, int attribute,
|
|
struct vc_data *vc)
|
|
{
|
|
int i, offset = (vc->vc_font.height < 10) ? 1 : 2;
|
|
int width = DIV_ROUND_UP(vc->vc_font.width, 8);
|
|
unsigned int cellsize = vc->vc_font.height * width;
|
|
u8 c;
|
|
|
|
offset = cellsize - (offset * width);
|
|
for (i = 0; i < cellsize; i++) {
|
|
c = src[i];
|
|
if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i >= offset)
|
|
c = 0xff;
|
|
if (attribute & FBCON_ATTRIBUTE_BOLD)
|
|
c |= c >> 1;
|
|
if (attribute & FBCON_ATTRIBUTE_REVERSE)
|
|
c = ~c;
|
|
dst[i] = 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)
|
|
{
|
|
struct fb_copyarea area;
|
|
|
|
area.sx = sx * vc->vc_font.width;
|
|
area.sy = sy * vc->vc_font.height;
|
|
area.dx = dx * vc->vc_font.width;
|
|
area.dy = dy * vc->vc_font.height;
|
|
area.height = height * vc->vc_font.height;
|
|
area.width = width * vc->vc_font.width;
|
|
|
|
info->fbops->fb_copyarea(info, &area);
|
|
}
|
|
|
|
static void bit_clear(struct vc_data *vc, struct fb_info *info, int sy,
|
|
int sx, int height, int width)
|
|
{
|
|
int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
|
|
struct fb_fillrect region;
|
|
|
|
region.color = attr_bgcol_ec(bgshift, vc, info);
|
|
region.dx = sx * vc->vc_font.width;
|
|
region.dy = sy * vc->vc_font.height;
|
|
region.width = width * vc->vc_font.width;
|
|
region.height = height * vc->vc_font.height;
|
|
region.rop = ROP_COPY;
|
|
|
|
info->fbops->fb_fillrect(info, ®ion);
|
|
}
|
|
|
|
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,
|
|
struct fb_image *image, u8 *buf, u8 *dst)
|
|
{
|
|
u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
|
|
u32 idx = vc->vc_font.width >> 3;
|
|
u8 *src;
|
|
|
|
while (cnt--) {
|
|
src = vc->vc_font.data + (scr_readw(s++)&
|
|
charmask)*cellsize;
|
|
|
|
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);
|
|
else
|
|
fb_pad_aligned_buffer(dst, d_pitch, src, idx,
|
|
image->height);
|
|
|
|
dst += s_pitch;
|
|
}
|
|
|
|
info->fbops->fb_imageblit(info, image);
|
|
}
|
|
|
|
static inline void bit_putcs_unaligned(struct vc_data *vc,
|
|
struct fb_info *info, const u16 *s,
|
|
u32 attr, u32 cnt, u32 d_pitch,
|
|
u32 s_pitch, u32 cellsize,
|
|
struct fb_image *image, u8 *buf,
|
|
u8 *dst)
|
|
{
|
|
u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
|
|
u32 shift_low = 0, mod = vc->vc_font.width % 8;
|
|
u32 shift_high = 8;
|
|
u32 idx = vc->vc_font.width >> 3;
|
|
u8 *src;
|
|
|
|
while (cnt--) {
|
|
src = vc->vc_font.data + (scr_readw(s++)&
|
|
charmask)*cellsize;
|
|
|
|
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);
|
|
shift_low += mod;
|
|
dst += (shift_low >= 8) ? s_pitch : s_pitch - 1;
|
|
shift_low &= 7;
|
|
shift_high = 8 - shift_low;
|
|
}
|
|
|
|
info->fbops->fb_imageblit(info, image);
|
|
|
|
}
|
|
|
|
static void bit_putcs(struct vc_data *vc, struct fb_info *info,
|
|
const unsigned short *s, int count, int yy, int xx,
|
|
int fg, int bg)
|
|
{
|
|
struct fb_image image;
|
|
u32 width = DIV_ROUND_UP(vc->vc_font.width, 8);
|
|
u32 cellsize = width * vc->vc_font.height;
|
|
u32 maxcnt = info->pixmap.size/cellsize;
|
|
u32 scan_align = info->pixmap.scan_align - 1;
|
|
u32 buf_align = info->pixmap.buf_align - 1;
|
|
u32 mod = vc->vc_font.width % 8, cnt, pitch, size;
|
|
u32 attribute = get_attribute(info, scr_readw(s));
|
|
u8 *dst, *buf = NULL;
|
|
|
|
image.fg_color = fg;
|
|
image.bg_color = bg;
|
|
image.dx = xx * vc->vc_font.width;
|
|
image.dy = yy * vc->vc_font.height;
|
|
image.height = vc->vc_font.height;
|
|
image.depth = 1;
|
|
|
|
if (attribute) {
|
|
buf = kmalloc(cellsize, GFP_ATOMIC);
|
|
if (!buf)
|
|
return;
|
|
}
|
|
|
|
while (count) {
|
|
if (count > maxcnt)
|
|
cnt = maxcnt;
|
|
else
|
|
cnt = count;
|
|
|
|
image.width = vc->vc_font.width * cnt;
|
|
pitch = DIV_ROUND_UP(image.width, 8) + scan_align;
|
|
pitch &= ~scan_align;
|
|
size = pitch * image.height + buf_align;
|
|
size &= ~buf_align;
|
|
dst = fb_get_buffer_offset(info, &info->pixmap, size);
|
|
image.data = dst;
|
|
|
|
if (!mod)
|
|
bit_putcs_aligned(vc, info, s, attribute, cnt, pitch,
|
|
width, cellsize, &image, buf, dst);
|
|
else
|
|
bit_putcs_unaligned(vc, info, s, attribute, cnt,
|
|
pitch, width, cellsize, &image,
|
|
buf, dst);
|
|
|
|
image.dx += cnt * vc->vc_font.width;
|
|
count -= cnt;
|
|
s += cnt;
|
|
}
|
|
|
|
/* buf is always NULL except when in monochrome mode, so in this case
|
|
it's a gain to check buf against NULL even though kfree() handles
|
|
NULL pointers just fine */
|
|
if (unlikely(buf))
|
|
kfree(buf);
|
|
|
|
}
|
|
|
|
static void bit_clear_margins(struct vc_data *vc, struct fb_info *info,
|
|
int color, int bottom_only)
|
|
{
|
|
unsigned int cw = vc->vc_font.width;
|
|
unsigned int ch = vc->vc_font.height;
|
|
unsigned int rw = info->var.xres - (vc->vc_cols*cw);
|
|
unsigned int bh = info->var.yres - (vc->vc_rows*ch);
|
|
unsigned int rs = info->var.xres - rw;
|
|
unsigned int bs = info->var.yres - bh;
|
|
struct fb_fillrect region;
|
|
|
|
region.color = color;
|
|
region.rop = ROP_COPY;
|
|
|
|
if (rw && !bottom_only) {
|
|
region.dx = info->var.xoffset + rs;
|
|
region.dy = 0;
|
|
region.width = rw;
|
|
region.height = info->var.yres_virtual;
|
|
info->fbops->fb_fillrect(info, ®ion);
|
|
}
|
|
|
|
if (bh) {
|
|
region.dx = info->var.xoffset;
|
|
region.dy = info->var.yoffset + bs;
|
|
region.width = rs;
|
|
region.height = bh;
|
|
info->fbops->fb_fillrect(info, ®ion);
|
|
}
|
|
}
|
|
|
|
static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
|
|
int softback_lines, int fg, int bg)
|
|
{
|
|
struct fb_cursor cursor;
|
|
struct fbcon_ops *ops = info->fbcon_par;
|
|
unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
|
|
int w = DIV_ROUND_UP(vc->vc_font.width, 8), c;
|
|
int y = real_y(ops->p, vc->vc_y);
|
|
int attribute, use_sw = (vc->vc_cursor_type & 0x10);
|
|
int err = 1;
|
|
char *src;
|
|
|
|
cursor.set = 0;
|
|
|
|
if (softback_lines) {
|
|
if (y + softback_lines >= vc->vc_rows) {
|
|
mode = CM_ERASE;
|
|
ops->cursor_flash = 0;
|
|
return;
|
|
} else
|
|
y += softback_lines;
|
|
}
|
|
|
|
c = scr_readw((u16 *) vc->vc_pos);
|
|
attribute = get_attribute(info, c);
|
|
src = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height));
|
|
|
|
if (ops->cursor_state.image.data != src ||
|
|
ops->cursor_reset) {
|
|
ops->cursor_state.image.data = src;
|
|
cursor.set |= FB_CUR_SETIMAGE;
|
|
}
|
|
|
|
if (attribute) {
|
|
u8 *dst;
|
|
|
|
dst = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC);
|
|
if (!dst)
|
|
return;
|
|
kfree(ops->cursor_data);
|
|
ops->cursor_data = dst;
|
|
update_attr(dst, src, attribute, vc);
|
|
src = dst;
|
|
}
|
|
|
|
if (ops->cursor_state.image.fg_color != fg ||
|
|
ops->cursor_state.image.bg_color != bg ||
|
|
ops->cursor_reset) {
|
|
ops->cursor_state.image.fg_color = fg;
|
|
ops->cursor_state.image.bg_color = bg;
|
|
cursor.set |= FB_CUR_SETCMAP;
|
|
}
|
|
|
|
if ((ops->cursor_state.image.dx != (vc->vc_font.width * vc->vc_x)) ||
|
|
(ops->cursor_state.image.dy != (vc->vc_font.height * y)) ||
|
|
ops->cursor_reset) {
|
|
ops->cursor_state.image.dx = vc->vc_font.width * vc->vc_x;
|
|
ops->cursor_state.image.dy = vc->vc_font.height * y;
|
|
cursor.set |= FB_CUR_SETPOS;
|
|
}
|
|
|
|
if (ops->cursor_state.image.height != vc->vc_font.height ||
|
|
ops->cursor_state.image.width != vc->vc_font.width ||
|
|
ops->cursor_reset) {
|
|
ops->cursor_state.image.height = vc->vc_font.height;
|
|
ops->cursor_state.image.width = vc->vc_font.width;
|
|
cursor.set |= FB_CUR_SETSIZE;
|
|
}
|
|
|
|
if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
|
|
ops->cursor_reset) {
|
|
ops->cursor_state.hot.x = cursor.hot.y = 0;
|
|
cursor.set |= FB_CUR_SETHOT;
|
|
}
|
|
|
|
if (cursor.set & FB_CUR_SETSIZE ||
|
|
vc->vc_cursor_type != ops->p->cursor_shape ||
|
|
ops->cursor_state.mask == NULL ||
|
|
ops->cursor_reset) {
|
|
char *mask = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC);
|
|
int cur_height, size, i = 0;
|
|
u8 msk = 0xff;
|
|
|
|
if (!mask)
|
|
return;
|
|
|
|
kfree(ops->cursor_state.mask);
|
|
ops->cursor_state.mask = mask;
|
|
|
|
ops->p->cursor_shape = vc->vc_cursor_type;
|
|
cursor.set |= FB_CUR_SETSHAPE;
|
|
|
|
switch (ops->p->cursor_shape & CUR_HWMASK) {
|
|
case CUR_NONE:
|
|
cur_height = 0;
|
|
break;
|
|
case CUR_UNDERLINE:
|
|
cur_height = (vc->vc_font.height < 10) ? 1 : 2;
|
|
break;
|
|
case CUR_LOWER_THIRD:
|
|
cur_height = vc->vc_font.height/3;
|
|
break;
|
|
case CUR_LOWER_HALF:
|
|
cur_height = vc->vc_font.height >> 1;
|
|
break;
|
|
case CUR_TWO_THIRDS:
|
|
cur_height = (vc->vc_font.height << 1)/3;
|
|
break;
|
|
case CUR_BLOCK:
|
|
default:
|
|
cur_height = vc->vc_font.height;
|
|
break;
|
|
}
|
|
size = (vc->vc_font.height - cur_height) * w;
|
|
while (size--)
|
|
mask[i++] = ~msk;
|
|
size = cur_height * w;
|
|
while (size--)
|
|
mask[i++] = msk;
|
|
}
|
|
|
|
switch (mode) {
|
|
case CM_ERASE:
|
|
ops->cursor_state.enable = 0;
|
|
break;
|
|
case CM_DRAW:
|
|
case CM_MOVE:
|
|
default:
|
|
ops->cursor_state.enable = (use_sw) ? 0 : 1;
|
|
break;
|
|
}
|
|
|
|
cursor.image.data = src;
|
|
cursor.image.fg_color = ops->cursor_state.image.fg_color;
|
|
cursor.image.bg_color = ops->cursor_state.image.bg_color;
|
|
cursor.image.dx = ops->cursor_state.image.dx;
|
|
cursor.image.dy = ops->cursor_state.image.dy;
|
|
cursor.image.height = ops->cursor_state.image.height;
|
|
cursor.image.width = ops->cursor_state.image.width;
|
|
cursor.hot.x = ops->cursor_state.hot.x;
|
|
cursor.hot.y = ops->cursor_state.hot.y;
|
|
cursor.mask = ops->cursor_state.mask;
|
|
cursor.enable = ops->cursor_state.enable;
|
|
cursor.image.depth = 1;
|
|
cursor.rop = ROP_XOR;
|
|
|
|
if (info->fbops->fb_cursor)
|
|
err = info->fbops->fb_cursor(info, &cursor);
|
|
|
|
if (err)
|
|
soft_cursor(info, &cursor);
|
|
|
|
ops->cursor_reset = 0;
|
|
}
|
|
|
|
static int bit_update_start(struct fb_info *info)
|
|
{
|
|
struct fbcon_ops *ops = info->fbcon_par;
|
|
int err;
|
|
|
|
err = fb_pan_display(info, &ops->var);
|
|
ops->var.xoffset = info->var.xoffset;
|
|
ops->var.yoffset = info->var.yoffset;
|
|
ops->var.vmode = info->var.vmode;
|
|
return err;
|
|
}
|
|
|
|
void fbcon_set_bitops(struct fbcon_ops *ops)
|
|
{
|
|
ops->bmove = bit_bmove;
|
|
ops->clear = bit_clear;
|
|
ops->putcs = bit_putcs;
|
|
ops->clear_margins = bit_clear_margins;
|
|
ops->cursor = bit_cursor;
|
|
ops->update_start = bit_update_start;
|
|
ops->rotate_font = NULL;
|
|
|
|
if (ops->rotate)
|
|
fbcon_set_rotate(ops);
|
|
}
|
|
|
|
EXPORT_SYMBOL(fbcon_set_bitops);
|
|
|