On Wed, 2015-02-25 at 07:40 +1100, Benjamin Herrenschmidt wrote:
> On Tue, 2015-02-24 at 14:34 -0600, Scott Wood wrote:
> > On Fri, 2015-02-20 at 19:35 +1100, Benjamin Herrenschmidt wrote:
> > > static u64 dma_direct_get_required_mask(struct device *dev)
> > > diff --git a/arch/powerpc/mm/mem.c b/
On Fri, 2015-02-20 at 19:35 +1100, Benjamin Herrenschmidt wrote:
> @@ -149,14 +141,13 @@ static void dma_direct_unmap_sg(struct device *dev,
> struct scatterlist *sg,
>
> static int dma_direct_dma_supported(struct device *dev, u64 mask)
> {
> -#ifdef CONFIG_PPC64
> - /* Could be improved s
On Tue, 2015-02-24 at 14:34 -0600, Scott Wood wrote:
> On Fri, 2015-02-20 at 19:35 +1100, Benjamin Herrenschmidt wrote:
> > @@ -149,14 +141,13 @@ static void dma_direct_unmap_sg(struct device *dev,
> > struct scatterlist *sg,
> >
> > static int dma_direct_dma_supported(struct device *dev, u64 m
Some drivers try to use a 64-bit dma_mask and a smaller (32-bit typically)
coherent dma mask.
We don't currently support that on platforms that do direct DMA
because:
- We use the generic dma_set_coherent_mask()
- It will use dma_supported() with the provided mask
- Our imlpementation of the
