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modified to use library functions (memcpy(), bzero())

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This commit is contained in:
Markus Fröschle
2013-08-21 08:55:47 +00:00
parent 8a7f62060a
commit dd2cc0d3b9
4 changed files with 20 additions and 23 deletions
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30
sources/dma.c
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@@ -40,38 +40,22 @@ void *dma_memcpy(void *dst, void *src, size_t n)
start = MCF_SLT0_SCNT;
/* first check if we can do a "traditional" memcpy() to the destination and measure speed */
// memcpy(d, s, n);
memcpy(d, s, n);
{
uint32_t *dl = (uint32_t *) dst;
uint32_t *sl = (uint32_t *) src;
do
{
*dl++ = *sl++;
} while (dl < (uint32_t *) (dst + n));
}
end = MCF_SLT0_SCNT;
time = (start - end) / 132;
xprintf("memcpy() took %d ms (%d.%d Mbytes/second)\r\n",
time, n / time / 1000, n / time % 1000);
flush_and_invalidate_caches();
//#endif
//#endif
xprintf("clear target area after memcpy():");
bzero(dst, n);
flush_and_invalidate_caches();
{
uint32_t *dl = (uint32_t *) dst;
xprintf("clear target area after memcpy():");
do
{
*dl++ = 0;
} while (dl < (uint32_t *) (dst + n));
xprintf(" finished, flush caches: ");
flush_and_invalidate_caches();
xprintf("finished\r\n");
}
xprintf(" finished, flush caches: ");
flush_and_invalidate_caches();
xprintf("finished\r\n");
start = MCF_SLT0_SCNT;
ret = MCD_startDma(0, src, 4, dst, 4, n, 4, DMA_ALWAYS, 7, MCD_SINGLE_DMA|MCD_TT_FLAGS_CW|MCD_TT_FLAGS_RL|MCD_TT_FLAGS_SP, 0);