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/*
* Copyright (c) 2007 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Neither the name of the Advanced Micro Devices, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*/
/* We want to share as much code between GX and LX as we possibly can for obvious reasons */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "amd.h"
#define move0(d,s,n) \
__asm__ __volatile__( \
" rep; movsl\n" \
: "=&c" (d0), "=&S" (d1), "=&D" (d2) \
: "0" (n), "1" (s), "2" (d) \
: "memory")
#define move1(d,s,n) \
__asm__ __volatile__( \
" rep; movsl\n" \
" movsb\n" \
: "=&c" (d0), "=&S" (d1), "=&D" (d2) \
: "0" (n), "1" (s), "2" (d) \
: "memory")
#define move2(d,s,n) \
__asm__ __volatile__( \
" rep; movsl\n" \
" movsw\n" \
: "=&c" (d0), "=&S" (d1), "=&D" (d2) \
: "0" (n), "1" (s), "2" (d) \
: "memory")
#define move3(d,s,n) \
__asm__ __volatile__( \
" rep; movsl\n" \
" movsw\n" \
" movsb\n" \
: "=&c" (d0), "=&S" (d1), "=&D" (d2) \
: "0" (n), "1" (s), "2" (d) \
: "memory")
void
geode_memory_to_screen_blt(unsigned long src, unsigned long dst,
unsigned long sp, unsigned long dp, long w, long h, int bpp)
{
int d0, d1, d2;
int n = w * (bpp >> 3);
int m = n >> 2;
switch (n & 3) {
case 0:
while (--h >= 0) {
move0(dst, src, m);
src += sp;
dst += dp;
}
break;
case 1:
while (--h >= 0) {
move1(dst, src, m);
src += sp;
dst += dp;
}
break;
case 2:
while (--h >= 0) {
move2(dst, src, m);
src += sp;
dst += dp;
}
break;
case 3:
while (--h >= 0) {
move3(dst, src, m);
src += sp;
dst += dp;
}
break;
}
}
/* I borrowed this function from the i830 driver - its much better
then what we had before
*/
int
GeodeGetRefreshRate(DisplayModePtr pMode)
{
if (pMode->VRefresh)
return (int)(pMode->VRefresh + 0.5);
return (int)(pMode->Clock * 1000.0 / pMode->HTotal / pMode->VTotal + 0.5);
}
/* This is used by both GX and LX. It could be accelerated for LX, probably, but
that would involve a two pass blt, the first to copy the data, and the second
to copy the grey (using a pattern). That seems like a bit of work for a
very underused format - so we'll just use the slow version.
*/
void
GeodeCopyGreyscale(unsigned char *src, unsigned char *dst,
int dstPitch, int srcPitch, int h, int w)
{
int i;
unsigned char *src2 = src;
unsigned char *dst2 = dst;
unsigned char *dst3;
unsigned char *src3;
dstPitch <<= 1;
while (h--) {
dst3 = dst2;
src3 = src2;
for (i = 0; i < w; i++) {
*dst3++ = *src3++; /* Copy Y data */
*dst3++ = 0x80; /* Fill UV with 0x80 - greyscale */
}
src3 = src2;
for (i = 0; i < w; i++) {
*dst3++ = *src3++; /* Copy Y data */
*dst3++ = 0x80; /* Fill UV with 0x80 - greyscale */
}
dst2 += dstPitch;
src2 += srcPitch;
}
}
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