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authorPeter Tyser <ptyser@xes-inc.com>2009-06-30 17:15:49 -0500
committerKumar Gala <galak@kernel.crashing.org>2009-07-01 23:12:05 -0500
commit6af015b86b86d94de7ca1b23a3890bc93a50c2ab (patch)
tree3c170711ebb3a034807df13385b45589441c6e9b /drivers/dma
parent0d595f76bc9c7c8dff5bd31dffed87a840a03c56 (diff)
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fsl_dma: Make DMA transactions snoopable
Make DMA transactions snoopable so that CPUs can keep caches up-to-date. This allows dma transactions to be used for operations such as memory copies without any additional cache control operations. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/fsl_dma.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/dma/fsl_dma.c b/drivers/dma/fsl_dma.c
index e103c91..cba5d5b 100644
--- a/drivers/dma/fsl_dma.c
+++ b/drivers/dma/fsl_dma.c
@@ -72,8 +72,8 @@ static uint dma_check(void) {
void dma_init(void) {
volatile fsl_dma_t *dma = &dma_base->dma[0];
- out_be32(&dma->satr, FSL_DMA_SATR_SREAD_NO_SNOOP);
- out_be32(&dma->datr, FSL_DMA_DATR_DWRITE_NO_SNOOP);
+ out_be32(&dma->satr, FSL_DMA_SATR_SREAD_SNOOP);
+ out_be32(&dma->datr, FSL_DMA_DATR_DWRITE_SNOOP);
out_be32(&dma->sr, 0xffffffff); /* clear any errors */
dma_sync();
}