Hi Tomasz,
On Wed, Nov 28, 2018 at 8:39 AM Tomasz Figa wrote:
>
> Hi Vivek,
>
> On Tue, Nov 27, 2018 at 6:37 AM Vivek Gautam
> wrote:
> >
> > dma_map_sg() expects a DMA domain. However, the drm devices
> > have been traditionally using unmanaged iommu domain which
> > is non-dma type. Using dma
On Wed, Nov 28, 2018 at 6:09 PM Rob Clark wrote:
>
> On Wed, Nov 28, 2018 at 2:39 AM Christoph Hellwig wrote:
> >
> > > + /*
> > > + * dma_sync_sg_*() flush the physical pages, so point
> > > + * sg->dma_address to the physical ones for the right
> > > behav
Hi Christoph ,
On Wed, Nov 28, 2018 at 1:10 PM Christoph Hellwig wrote:
>
> > + /*
> > + * dma_sync_sg_*() flush the physical pages, so point
> > + * sg->dma_address to the physical ones for the right
> > behavior.
> > + */
> > + for
On Tue, Nov 27, 2018 at 11:39:40PM -0800, Christoph Hellwig wrote:
> > + /*
> > +* dma_sync_sg_*() flush the physical pages, so point
> > +* sg->dma_address to the physical ones for the right behavior.
> > +*/
> > + for_each_sg(msm_obj->sgt->s
On Wed, Nov 28, 2018 at 2:39 AM Christoph Hellwig wrote:
>
> > + /*
> > + * dma_sync_sg_*() flush the physical pages, so point
> > + * sg->dma_address to the physical ones for the right
> > behavior.
> > + */
> > + for_each_sg(msm_obj
> + /*
> + * dma_sync_sg_*() flush the physical pages, so point
> + * sg->dma_address to the physical ones for the right behavior.
> + */
> + for_each_sg(msm_obj->sgt->sgl, s, msm_obj->sgt->nents, i)
> + sg_dma_addre
Hi Vivek,
On Tue, Nov 27, 2018 at 6:37 AM Vivek Gautam
wrote:
>
> dma_map_sg() expects a DMA domain. However, the drm devices
> have been traditionally using unmanaged iommu domain which
> is non-dma type. Using dma mapping APIs with that domain is bad.
>
> Replace dma_map_sg() calls with dma_syn
dma_map_sg() expects a DMA domain. However, the drm devices
have been traditionally using unmanaged iommu domain which
is non-dma type. Using dma mapping APIs with that domain is bad.
Replace dma_map_sg() calls with dma_sync_sg_for_device{|cpu}()
to do the cache maintenance.
Signed-off-by: Vivek
