From: Sonic Zhang sonic.zhang@analog.com
Othersize, the bf609 memory dma halts after being enabled.
Signed-off-by: Sonic Zhang sonic.zhang@analog.com --- arch/blackfin/lib/string.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/arch/blackfin/lib/string.c b/arch/blackfin/lib/string.c index 44d8c6d..5b7ac0b 100644 --- a/arch/blackfin/lib/string.c +++ b/arch/blackfin/lib/string.c @@ -128,10 +128,12 @@ static void dma_calc_size(unsigned long ldst, unsigned long lsrc, size_t count, unsigned long limit;
#ifdef MSIZE - limit = 6; + /* The max memory DMA memory transfer size is 32 bytes. */ + limit = 5; *dshift = MSIZE_P; #else - limit = 3; + /* The max memory DMA memory transfer size is 4 bytes. */ + limit = 2; *dshift = WDSIZE_P; #endif
@@ -170,7 +172,8 @@ void dma_memcpy_nocache(void *dst, const void *src, size_t count) mod = 1 << bpos;
#ifdef PSIZE - dsize |= min(3, bpos) << PSIZE_P; + /* The max memory DMA peripheral transfer size is 4 bytes. */ + dsize |= min(2, bpos) << PSIZE_P; #endif
/* Copy sram functions from sdram to sram */