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fixed a few MDMA-related quirks. DMA still doesn't work when running from RAM

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This commit is contained in:
Markus Fröschle
2013-08-24 07:46:15 +00:00
parent bbaa522b58
commit 4218e2e655
6 changed files with 17 additions and 14 deletions
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19
BaS_gcc/sources/dma.c
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@@ -42,9 +42,11 @@ void *dma_memcpy(void *dst, void *src, size_t n)
memcpy(d, s, n);
//#endif /* _NOT_USED_ */
end = MCF_SLT0_SCNT;
time = (start - end) / 132;
time = (start - end) / 132 / 1000;
xprintf("memcpy() took %d ms (%d.%d Mbytes/second)\r\n",
time, n / time / 1000, n / time % 1000);
flush_and_invalidate_caches();
@@ -62,15 +64,15 @@ void *dma_memcpy(void *dst, void *src, size_t n)
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);
ret = MCD_startDma(1, src, 4, dst, 4, n, 4, DMA_ALWAYS, 0, MCD_SINGLE_DMA, 0);
if (ret == MCD_OK)
{
xprintf("DMA on channel 0 successfully started\r\n");
xprintf("DMA on channel 1 successfully started\r\n");
}
do
{
ret = MCD_dmaStatus(0);
ret = MCD_dmaStatus(1);
switch (ret)
{
case MCD_NO_DMA:
@@ -102,10 +104,9 @@ void *dma_memcpy(void *dst, void *src, size_t n)
break;
}
} while (ret != MCD_DONE);
xprintf("\r\n");
end = MCF_SLT0_SCNT;
time = (start - end) / 132;
time = (start - end) / 132 / 1000;
xprintf("start = %d, end = %d, time = %d\r\n", start, end, time);
xprintf("took %d ms (%d.%d Mbytes/second)\r\n", time, n / time / 1000, n / time % 1000);
@@ -136,14 +137,14 @@ void *dma_memcpy(void *dst, void *src, size_t n)
xprintf("DMA copy verification successful!\r\n");
end = MCF_SLT0_SCNT;
time = (start - end) / 132;
time = (start - end) / 132 / 1000;
xprintf("took %d ms (%d.%d Mbytes/second)\r\n", time, n / time / 1000, n / time % 1000);
}
#ifdef _NOT_USED_
__asm__ __volatile__("move.w sr,d0\n\t"
"stop #0x270\n\t"
"stop #0x2700\n\t"
"move.w d0,sr": : :); /* halt CPU until DMA finished */
#endif /* _NOT_USED_ */
@@ -157,7 +158,7 @@ int dma_init(void)
char *long_version;
xprintf("MCD DMA API initialization: ");
res = MCD_initDma((dmaRegs *) &MCF_DMA_TASKBAR, SYS_SRAM, MCD_RELOC_TASKS | MCD_COMM_PREFETCH_EN);
res = MCD_initDma((dmaRegs *) &_MBAR[0x8000], SYS_SRAM, MCD_RELOC_TASKS | MCD_COMM_PREFETCH_EN);
if (res != MCD_OK)
{
xprintf("DMA API initialization failed (0x%x)\r\n", res);