Hi,
On Tue, 12 Dec 2006, Michael Schmitz wrote:
> > > vger refused the atafb patch again, that's why I spammed Geert by CC: on
> > > all this, sigh.
> >
> > BTW I pretty much rewrote the bit plane stuff, so it doesn't constantly
> > corrupts the output.
>
> ??? When did you get to see output corruption? Can you send me your
> rewrite for testing? (Though Aranym should suffice for testing, really)
I was testing with vga256 and pretty much any line edit operation which
calls copyarea or fillrect causes a corrupt output (i.e. anything besides
special cases like full lines). Am I the only one seeing that?
I attached the 8 plane version, it still needs some more cleanups. The 2
and 4 plane version will look similiar and I propably going to merge them
at some point to use one template to produce the 3 versions.
I killed the movep stuff, I'm not sure it still is really a win (maybe at
68000 times it was, but on a 68060 it certainly isn't), some operations
should be even considerably faster now (e.g. odd<->even copy).
bye, Roman
/*
* linux/drivers/video/iplan2p8.c -- Low level frame buffer operations for
* interleaved bitplanes à la Atari (8
* planes, 2 bytes interleave)
*
* Created 5 Apr 1997 by Geert Uytterhoeven
*
* 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/string.h>
#include <linux/fb.h>
#include <asm/setup.h>
#include "console/fbcon.h"
#include "atafb_iplan2p8.h"
#define BPL 8
#include "atafb_utils.h"
/* Copies a 8 plane column from 's', height 'h', to 'd'. */
/* This expands a 8 bit color into two longs for two movepl (8 plane)
* operations.
*/
void atafb_iplan2p8_copyarea(struct fb_info *info, u_long next_line,
int sy, int sx, int dy, int dx,
int height, int width)
{
/* bmove() has to distinguish two major cases: If both, source and
* destination, start at even addresses or both are at odd
* addresses, just the first odd and last even column (if present)
* require special treatment (memmove_col()). The rest between
* then can be copied by normal operations, because all adjacent
* bytes are affected and are to be stored in the same order.
* The pathological case is when the move should go from an odd
* address to an even or vice versa. Since the bytes in the plane
* words must be assembled in new order, it seems wisest to make
* all movements by memmove_col().
*/
u8 *src, *dst;
u32 *s, *d;
int w, l , i, j;
u_int colsize;
u_int upwards = (dy < sy) || (dy == sy && dx < sx);
colsize = height;
if (!((sx ^ dx) & 15)) {
/* odd->odd or even->even */
if (upwards) {
src = (u8 *)info->screen_base + sy * next_line + (sx & ~15);
dst = (u8 *)info->screen_base + dy * next_line + (dx & ~15);
if (sx & 15) {
memmove32_col(dst, src, 0xff00ff, height, next_line - 16);
src += 16;
dst += 16;
width -= 8;
}
w = width >> 4;
if (w) {
s = (u32 *)src;
d = (u32 *)dst;
w *= 4;
l = next_line - w * 4;
for (j = height; j > 0; j--) {
for (i = w; i > 0; i--)
*d++ = *s++;
s = (u32 *)((u8 *)s + l);
d = (u32 *)((u8 *)d + l);
}
}
if (width & 15)
memmove32_col(dst + width, src + width,
0xff00ff00, height, next_line - 16);
} else {
src = (u8 *)info->screen_base + (sy - 1) * next_line + ((sx + width + 8) & ~15);
dst = (u8 *)info->screen_base + (dy - 1) * next_line + ((dx + width + 8) & ~15);
if ((sx + width) & 15) {
src -= 16;
dst -= 16;
memmove32_col(dst, src, 0xff00ff00, colsize, -next_line - 16);
width -= 8;
}
w = width >> 4;
if (w) {
s = (u32 *)src;
d = (u32 *)dst;
w *= 4;
l = next_line - w * 4;
for (j = height; j > 0; j--) {
for (i = w; i > 0; i--)
*--d = *--s;
s = (u32 *)((u8 *)s - l);
d = (u32 *)((u8 *)d - l);
}
}
if (sx & 15)
memmove32_col(dst - width - 16, src - width - 16,
0xff00ff, colsize, -next_line - 16);
}
} else {
/* odd->even or even->odd */
if (upwards) {
u32 *src32, *dst32;
u32 pval[4], v, v1, mask;
int i, j, w, f;
src = (u8 *)info->screen_base + sy * next_line + (sx & ~15);
dst = (u8 *)info->screen_base + dy * next_line + (dx & ~15);
mask = 0xff00ff00;
f = 0;
w = width;
if (sx & 15) {
f = 1;
w += 8;
}
if ((sx + width) & 15)
f |= 2;
w >>= 4;
for (i = height; i; i--) {
src32 = (u32 *)src;
dst32 = (u32 *)dst;
if (f & 1) {
pval[0] = (*src32++ << 8) & mask;
pval[1] = (*src32++ << 8) & mask;
pval[2] = (*src32++ << 8) & mask;
pval[3] = (*src32++ << 8) & mask;
} else {
pval[0] = dst32[0] & mask;
pval[1] = dst32[1] & mask;
pval[2] = dst32[2] & mask;
pval[3] = dst32[3] & mask;
}
for (j = w; j > 0; j--) {
v = *src32++;
v1 = v & mask;
*dst32++ = pval[0] | (v1 >> 8);
pval[0] = (v ^ v1) << 8;
v = *src32++;
v1 = v & mask;
*dst32++ = pval[1] | (v1 >> 8);
pval[1] = (v ^ v1) << 8;
v = *src32++;
v1 = v & mask;
*dst32++ = pval[2] | (v1 >> 8);
pval[2] = (v ^ v1) << 8;
v = *src32++;
v1 = v & mask;
*dst32++ = pval[3] | (v1 >> 8);
pval[3] = (v ^ v1) << 8;
}
if (f & 2) {
dst32[0] = (dst32[0] & mask) | pval[0];
dst32[1] = (dst32[1] & mask) | pval[1];
dst32[2] = (dst32[2] & mask) | pval[2];
dst32[3] = (dst32[3] & mask) | pval[3];
}
src += next_line;
dst += next_line;
}
} else {
u32 *src32, *dst32;
u32 pval[4], v, v1, mask;
int i, j, w, f;
src = (u8 *)(info->screen_base + (sy - 1) * next_line + ((sx + width + 8) & ~15));
dst = (u8 *)(info->screen_base + (dy - 1) * next_line + ((dx + width + 8) & ~15));
mask = 0xff00ff;
f = 0;
w = width;
if ((dx + width) & 15)
f = 1;
if (sx & 15) {
f |= 2;
w += 8;
}
w >>= 4;
for (i = height; i; i--) {
src32 = (u32 *)src;
dst32 = (u32 *)dst;
if (f & 1) {
pval[0] = dst32[-1] & mask;
pval[1] = dst32[-2] & mask;
pval[2] = dst32[-3] & mask;
pval[3] = dst32[-4] & mask;
} else {
pval[0] = (*--src32 >> 8) & mask;
pval[1] = (*--src32 >> 8) & mask;
pval[2] = (*--src32 >> 8) & mask;
pval[3] = (*--src32 >> 8) & mask;
}
for (j = w; j > 0; j--) {
v = *--src32;
v1 = v & mask;
*--dst32 = pval[0] | (v1 << 8);
pval[0] = (v ^ v1) >> 8;
v = *--src32;
v1 = v & mask;
*--dst32 = pval[1] | (v1 << 8);
pval[1] = (v ^ v1) >> 8;
v = *--src32;
v1 = v & mask;
*--dst32 = pval[2] | (v1 << 8);
pval[2] = (v ^ v1) >> 8;
v = *--src32;
v1 = v & mask;
*--dst32 = pval[3] | (v1 << 8);
pval[3] = (v ^ v1) >> 8;
}
if (!(f & 2)) {
dst32[-1] = (dst32[-1] & mask) | pval[0];
dst32[-2] = (dst32[-2] & mask) | pval[1];
dst32[-3] = (dst32[-3] & mask) | pval[2];
dst32[-4] = (dst32[-4] & mask) | pval[3];
}
src -= next_line;
dst -= next_line;
}
}
}
}
void atafb_iplan2p8_fillrect(struct fb_info *info, u_long next_line, u32 color,
int sy, int sx, int height, int width)
{
u32 *dest;
int rows, i, j;
u32 cval[4], tmp;
dest = (u32 *)(info->screen_base + sy * next_line + (sx & ~15) / (8 / BPL));
if (sx & 15) {
u8 *dest8 = (u8 *)dest + 1;
expand8_col2mask(color, cval);
for (i = height; i; i--) {
fill8_col(dest8, cval);
dest8 += next_line;
}
dest += BPL / 2;
width -= 8;
}
expand16_col2mask(color, cval);
rows = width >> 4;
if (rows) {
u32 *d = dest;
u32 off = next_line - rows * BPL * 2;
for (i = height; i; i--) {
d = fill16_col(d, rows, cval);
d = (u32 *)((long)d + off);
}
dest += rows << 2;
width &= 15;
}
if (width) {
u8 *dest8 = (u8 *)dest;
expand8_col2mask(color, cval);
for (i = height; i; i--) {
fill8_col(dest8, cval);
dest8 += next_line;
}
}
}
void atafb_iplan2p8_linefill(struct fb_info *info, u_long next_line,
int dy, int dx, u32 width,
const u8 *data, u32 bgcolor, u32 fgcolor)
{
u32 *dest;
const u16 *data16;
int rows;
u32 m, tmp;
u32 fgm[4], bgm[4];
dest = (u32 *)(info->screen_base + dy * next_line + (dx & ~15) / (8 / BPL));
if (dx & 15) {
fill8_2col((u8 *)dest + 1, fgcolor, bgcolor, *data++);
dest += BPL / 2;
width -= 8;
}
if (width >= 16) {
data16 = (const u16 *)data;
expand16_2col2mask(fgcolor, bgcolor, fgm, bgm);
for (rows = width / 16; rows; rows--) {
u16 d = *data16++;
m = d | ((u32)d << 16);
*dest++ = (m & fgm[0]) ^ bgm[0];
*dest++ = (m & fgm[1]) ^ bgm[1];
*dest++ = (m & fgm[2]) ^ bgm[2];
*dest++ = (m & fgm[3]) ^ bgm[3];
}
data = (const u8 *)data16;
width &= 15;
}
if (width)
fill8_2col((u8 *)dest, fgcolor, bgcolor, *data);
}
#ifdef MODULE
MODULE_LICENSE("GPL");
int init_module(void)
{
return 0;
}
void cleanup_module(void)
{}
#endif /* MODULE */
/*
* Visible symbols for modules
*/
EXPORT_SYMBOL(atafb_iplan2p8_copyarea);
EXPORT_SYMBOL(atafb_iplan2p8_fillrect);
EXPORT_SYMBOL(atafb_iplan2p8_linefill);
#ifndef _VIDEO_ATAFB_UTILS_H
#define _VIDEO_ATAFB_UTILS_H
/* ================================================================= */
/* Utility Assembler Functions */
/* ================================================================= */
/* ====================================================================== */
/* Those of a delicate disposition might like to skip the next couple of
* pages.
*
* These functions are drop in replacements for memmove and
* memset(_, 0, _). However their five instances add at least a kilobyte
* to the object file. You have been warned.
*
* Not a great fan of assembler for the sake of it, but I think
* that these routines are at least 10 times faster than their C
* equivalents for large blits, and that's important to the lowest level of
* a graphics driver. Question is whether some scheme with the blitter
* would be faster. I suspect not for simple text system - not much
* asynchrony.
*
* Code is very simple, just gruesome expansion. Basic strategy is to
* increase data moved/cleared at each step to 16 bytes to reduce
* instruction per data move overhead. movem might be faster still
* For more than 15 bytes, we try to align the write direction on a
* longword boundary to get maximum speed. This is even more gruesome.
* Unaligned read/write used requires 68020+ - think this is a problem?
*
* Sorry!
*/
/* ++roman: I've optimized Robert's original versions in some minor
* aspects, e.g. moveq instead of movel, let gcc choose the registers,
* use movem in some places...
* For other modes than 1 plane, lots of more such assembler functions
* were needed (e.g. the ones using movep or expanding color values).
*/
/* ++andreas: more optimizations:
subl #65536,d0 replaced by clrw d0; subql #1,d0 for dbcc
addal is faster than addaw
movep is rather expensive compared to ordinary move's
some functions rewritten in C for clarity, no speed loss */
static __inline__ void *fb_memclear_small(void *s, size_t count)
{
if (!count)
return(0);
__asm__ __volatile__(
"lsrl #1,%1 ; jcc 1f ; moveb %2,[EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; movew %2,[EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; movel %2,[EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; movel %2,[EMAIL PROTECTED] ; movel %2,[EMAIL PROTECTED]"
"1:"
: "=a" (s), "=d" (count)
: "d" (0), "0" ((char *)s+count), "1" (count)
);
__asm__ __volatile__(
"subql #1,%1 ; jcs 3f\n\t"
"movel %2,%%d4; movel %2,%%d5; movel %2,%%d6\n\t"
"2: moveml %2/%%d4/%%d5/%%d6,[EMAIL PROTECTED]"
"dbra %1,2b\n\t"
"3:"
: "=a" (s), "=d" (count)
: "d" (0), "0" (s), "1" (count)
: "d4", "d5", "d6"
);
return(0);
}
static __inline__ void *fb_memclear(void *s, size_t count)
{
if (!count)
return(0);
if (count < 16) {
__asm__ __volatile__(
"lsrl #1,%1 ; jcc 1f ; clrb [EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; clrw [EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; clrl [EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; clrl [EMAIL PROTECTED] ; clrl [EMAIL PROTECTED]"
"1:"
: "=a" (s), "=d" (count)
: "0" (s), "1" (count)
);
} else {
long tmp;
__asm__ __volatile__(
"movel %1,%2\n\t"
"lsrl #1,%2 ; jcc 1f ; clrb [EMAIL PROTECTED] ; subqw #1,%1\n\t"
"lsrl #1,%2 ; jcs 2f\n\t" /* %0 increased=>bit 2 switched*/
"clrw [EMAIL PROTECTED] ; subqw #2,%1 ; jra 2f\n\t"
"1: lsrl #1,%2 ; jcc 2f\n\t"
"clrw [EMAIL PROTECTED] ; subqw #2,%1\n\t"
"2: movew %1,%2; lsrl #2,%1 ; jeq 6f\n\t"
"lsrl #1,%1 ; jcc 3f ; clrl [EMAIL PROTECTED]"
"3: lsrl #1,%1 ; jcc 4f ; clrl [EMAIL PROTECTED] ; clrl [EMAIL PROTECTED]"
"4: subql #1,%1 ; jcs 6f\n\t"
"5: clrl [EMAIL PROTECTED]; clrl [EMAIL PROTECTED] ; clrl [EMAIL PROTECTED] ; clrl [EMAIL PROTECTED]"
"dbra %1,5b ; clrw %1; subql #1,%1; jcc 5b\n\t"
"6: movew %2,%1; btst #1,%1 ; jeq 7f ; clrw [EMAIL PROTECTED]"
"7: ; btst #0,%1 ; jeq 8f ; clrb [EMAIL PROTECTED]"
"8:"
: "=a" (s), "=d" (count), "=d" (tmp)
: "0" (s), "1" (count)
);
}
return(0);
}
static __inline__ void *fb_memset255(void *s, size_t count)
{
if (!count)
return(0);
__asm__ __volatile__(
"lsrl #1,%1 ; jcc 1f ; moveb %2,[EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; movew %2,[EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; movel %2,[EMAIL PROTECTED]"
"1: lsrl #1,%1 ; jcc 1f ; movel %2,[EMAIL PROTECTED] ; movel %2,[EMAIL PROTECTED]"
"1:"
: "=a" (s), "=d" (count)
: "d" (-1), "0" ((char *)s+count), "1" (count)
);
__asm__ __volatile__(
"subql #1,%1 ; jcs 3f\n\t"
"movel %2,%%d4; movel %2,%%d5; movel %2,%%d6\n\t"
"2: moveml %2/%%d4/%%d5/%%d6,[EMAIL PROTECTED]"
"dbra %1,2b\n\t"
"3:"
: "=a" (s), "=d" (count)
: "d" (-1), "0" (s), "1" (count)
: "d4", "d5", "d6"
);
return(0);
}
static __inline__ void *fb_memmove(void *d, const void *s, size_t count)
{
if (d < s) {
if (count < 16) {
__asm__ __volatile__(
"lsrl #1,%2 ; jcc 1f ; moveb [EMAIL PROTECTED],[EMAIL PROTECTED]"
"1: lsrl #1,%2 ; jcc 1f ; movew [EMAIL PROTECTED],[EMAIL PROTECTED]"
"1: lsrl #1,%2 ; jcc 1f ; movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"1: lsrl #1,%2 ; jcc 1f ; movel [EMAIL PROTECTED],[EMAIL PROTECTED] ; movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"1:"
: "=a" (d), "=a" (s), "=d" (count)
: "0" (d), "1" (s), "2" (count)
);
} else {
long tmp;
__asm__ __volatile__(
"movel %0,%3\n\t"
"lsrl #1,%3 ; jcc 1f ; moveb [EMAIL PROTECTED],[EMAIL PROTECTED] ; subqw #1,%2\n\t"
"lsrl #1,%3 ; jcs 2f\n\t" /* %0 increased=>bit 2 switched*/
"movew [EMAIL PROTECTED],[EMAIL PROTECTED] ; subqw #2,%2 ; jra 2f\n\t"
"1: lsrl #1,%3 ; jcc 2f\n\t"
"movew [EMAIL PROTECTED],[EMAIL PROTECTED] ; subqw #2,%2\n\t"
"2: movew %2,%-; lsrl #2,%2 ; jeq 6f\n\t"
"lsrl #1,%2 ; jcc 3f ; movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"3: lsrl #1,%2 ; jcc 4f ; movel [EMAIL PROTECTED],[EMAIL PROTECTED] ; movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"4: subql #1,%2 ; jcs 6f\n\t"
"5: movel [EMAIL PROTECTED],[EMAIL PROTECTED];movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"movel [EMAIL PROTECTED],[EMAIL PROTECTED];movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"dbra %2,5b ; clrw %2; subql #1,%2; jcc 5b\n\t"
"6: movew %+,%2; btst #1,%2 ; jeq 7f ; movew [EMAIL PROTECTED],[EMAIL PROTECTED]"
"7: ; btst #0,%2 ; jeq 8f ; moveb [EMAIL PROTECTED],[EMAIL PROTECTED]"
"8:"
: "=a" (d), "=a" (s), "=d" (count), "=d" (tmp)
: "0" (d), "1" (s), "2" (count)
);
}
} else {
if (count < 16) {
__asm__ __volatile__(
"lsrl #1,%2 ; jcc 1f ; moveb [EMAIL PROTECTED],[EMAIL PROTECTED]"
"1: lsrl #1,%2 ; jcc 1f ; movew [EMAIL PROTECTED],[EMAIL PROTECTED]"
"1: lsrl #1,%2 ; jcc 1f ; movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"1: lsrl #1,%2 ; jcc 1f ; movel [EMAIL PROTECTED],[EMAIL PROTECTED] ; movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"1:"
: "=a" (d), "=a" (s), "=d" (count)
: "0" ((char *) d + count), "1" ((char *) s + count), "2" (count)
);
} else {
long tmp;
__asm__ __volatile__(
"movel %0,%3\n\t"
"lsrl #1,%3 ; jcc 1f ; moveb [EMAIL PROTECTED],[EMAIL PROTECTED] ; subqw #1,%2\n\t"
"lsrl #1,%3 ; jcs 2f\n\t" /* %0 increased=>bit 2 switched*/
"movew [EMAIL PROTECTED],[EMAIL PROTECTED] ; subqw #2,%2 ; jra 2f\n\t"
"1: lsrl #1,%3 ; jcc 2f\n\t"
"movew [EMAIL PROTECTED],[EMAIL PROTECTED] ; subqw #2,%2\n\t"
"2: movew %2,%-; lsrl #2,%2 ; jeq 6f\n\t"
"lsrl #1,%2 ; jcc 3f ; movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"3: lsrl #1,%2 ; jcc 4f ; movel [EMAIL PROTECTED],[EMAIL PROTECTED] ; movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"4: subql #1,%2 ; jcs 6f\n\t"
"5: movel [EMAIL PROTECTED],[EMAIL PROTECTED];movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"movel [EMAIL PROTECTED],[EMAIL PROTECTED];movel [EMAIL PROTECTED],[EMAIL PROTECTED]"
"dbra %2,5b ; clrw %2; subql #1,%2; jcc 5b\n\t"
"6: movew %+,%2; btst #1,%2 ; jeq 7f ; movew [EMAIL PROTECTED],[EMAIL PROTECTED]"
"7: ; btst #0,%2 ; jeq 8f ; moveb [EMAIL PROTECTED],[EMAIL PROTECTED]"
"8:"
: "=a" (d), "=a" (s), "=d" (count), "=d" (tmp)
: "0" ((char *) d + count), "1" ((char *) s + count), "2" (count)
);
}
}
return(0);
}
/* ++andreas: Simple and fast version of memmove, assumes size is
divisible by 16, suitable for moving the whole screen bitplane */
static __inline__ void fast_memmove(char *dst, const char *src, size_t size)
{
if (!size)
return;
if (dst < src)
__asm__ __volatile__
("1:"
" moveml [EMAIL PROTECTED],%/d0/%/d1/%/a0/%/a1\n"
" moveml %/d0/%/d1/%/a0/%/a1,[EMAIL PROTECTED]"
" addql #8,%1; addql #8,%1\n"
" dbra %2,1b\n"
" clrw %2; subql #1,%2\n"
" jcc 1b"
: "=a" (src), "=a" (dst), "=d" (size)
: "0" (src), "1" (dst), "2" (size / 16 - 1)
: "d0", "d1", "a0", "a1", "memory");
else
__asm__ __volatile__
("1:"
" subql #8,%0; subql #8,%0\n"
" moveml %0@,%/d0/%/d1/%/a0/%/a1\n"
" moveml %/d0/%/d1/%/a0/%/a1,[EMAIL PROTECTED]"
" dbra %2,1b\n"
" clrw %2; subql #1,%2\n"
" jcc 1b"
: "=a" (src), "=a" (dst), "=d" (size)
: "0" (src + size), "1" (dst + size), "2" (size / 16 - 1)
: "d0", "d1", "a0", "a1", "memory");
}
#ifdef BPL
/*
* This expands a up to 8 bit color into two longs
* for movel operations.
*/
static const u32 four2long[] =
{
0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff,
0x00ff0000, 0x00ff00ff, 0x00ffff00, 0x00ffffff,
0xff000000, 0xff0000ff, 0xff00ff00, 0xff00ffff,
0xffff0000, 0xffff00ff, 0xffffff00, 0xffffffff,
};
static inline void expand8_col2mask(u8 c, u32 m[])
{
m[0] = four2long[c & 15];
#if BPL > 4
m[1] = four2long[c >> 4];
#endif
}
static inline void expand8_2col2mask(u8 fg, u8 bg, u32 fgm[], u32 bgm[])
{
fgm[0] = four2long[fg & 15] ^ (bgm[0] = four2long[bg & 15]);
#if BPL > 4
fgm[1] = four2long[fg >> 4] ^ (bgm[1] = four2long[bg >> 4]);
#endif
}
/*
* set an 8bit value to a color
*/
static inline void fill8_col(u8 *dst, u32 m[])
{
u32 tmp = m[0];
dst[0] = tmp;
dst[2] = (tmp >>= 8);
#if BPL > 2
dst[4] = (tmp >>= 8);
dst[6] = tmp >> 8;
#endif
#if BPL > 4
tmp = m[1];
dst[8] = tmp;
dst[10] = (tmp >>= 8);
dst[12] = (tmp >>= 8);
dst[14] = tmp >> 8;
#endif
}
/*
* set an 8bit value according to foreground/background color
*/
static inline void fill8_2col(u8 *dst, u8 fg, u8 bg, u32 mask)
{
u32 fgm[2], bgm[2], tmp;
expand8_2col2mask(fg, bg, fgm, bgm);
mask |= mask << 8;
#if BPL > 2
mask |= mask << 16;
#endif
tmp = (mask & fgm[0]) ^ bgm[0];
dst[0] = tmp;
dst[2] = (tmp >>= 8);
#if BPL > 2
dst[4] = (tmp >>= 8);
dst[6] = tmp >> 8;
#endif
#if BPL > 4
tmp = (mask & fgm[1]) ^ bgm[1];
dst[8] = tmp;
dst[10] = (tmp >>= 8);
dst[12] = (tmp >>= 8);
dst[14] = tmp >> 8;
#endif
}
static const u32 two2word[] =
{
0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff
};
static inline void expand16_col2mask(u8 c, u32 m[])
{
m[0] = two2word[c & 3];
#if BPL > 2
m[1] = two2word[(c >> 2) & 3];
#endif
#if BPL > 4
m[2] = two2word[(c >> 4) & 3];
m[3] = two2word[c >> 6];
#endif
}
static inline void expand16_2col2mask(u8 fg, u8 bg, u32 fgm[], u32 bgm[])
{
bgm[0] = two2word[bg & 3];
fgm[0] = two2word[fg & 3] ^ bgm[0];
#if BPL > 2
bgm[1] = two2word[(bg >> 2) & 3];
fgm[1] = two2word[(fg >> 2) & 3] ^ bgm[1];
#endif
#if BPL > 4
bgm[2] = two2word[(bg >> 4) & 3];
fgm[2] = two2word[(fg >> 4) & 3] ^ bgm[2];
bgm[3] = two2word[bg >> 6];
fgm[3] = two2word[fg >> 6] ^ bgm[3];
#endif
}
static inline u32 *fill16_col(u32 *dst, int rows, u32 m[])
{
while (rows) {
*dst++ = m[0];
#if BPL > 2
*dst++ = m[1];
#endif
#if BPL > 4
*dst++ = m[2];
*dst++ = m[3];
#endif
rows--;
}
return dst;
}
static inline void memmove32_col(void *dst, void *src, u32 mask, u32 h, u32 bytes)
{
u32 *s, *d, v;
s = src;
d = dst;
do {
v = (*s++ & mask) | (*d & ~mask);
*d++ = v;
#if BPL > 2
v = (*s++ & mask) | (*d & ~mask);
*d++ = v;
#endif
#if BPL > 4
v = (*s++ & mask) | (*d & ~mask);
*d++ = v;
v = (*s++ & mask) | (*d & ~mask);
*d++ = v;
#endif
d = (u32 *)((u8 *)d + bytes);
s = (u32 *)((u8 *)s + bytes);
} while (--h);
}
#endif
#endif /* _VIDEO_ATAFB_UTILS_H */
