On Wed, Aug 10, 2016 at 01:22:13PM +0200, Niklas Söderlund wrote:
> Hi,
>
> This series tries to solve the problem with DMA with device registers
> (MMIO registers) that are behind an IOMMU for the rcar-dmac driver. A
> recent patch '9575632 (dmaengine: make slave address physical)'
> clarifies
Hi Vinod,
On 2016-09-15 21:56:51 +0530, Vinod Koul wrote:
> On Wed, Aug 10, 2016 at 11:07:10PM +0530, Vinod Koul wrote:
> > On Wed, Aug 10, 2016 at 01:22:13PM +0200, Niklas Söderlund wrote:
> > > Hi,
> > >
> > > This series tries to solve the problem with DMA with device registers
> > > (MMIO
Hi Robin,
On Friday 16 Sep 2016 13:49:21 Robin Murphy wrote:
> On 16/09/16 13:05, Laurent Pinchart wrote:
> [...]
>
> One concern I have is that we might get an awkward situation if we ever
> encounter one DMA engine hardware that is used in different systems
> that all have an
Hi Arnd,
On Friday 16 Sep 2016 14:22:31 Arnd Bergmann wrote:
> On Friday, September 16, 2016 3:09:29 PM CEST Laurent Pinchart wrote:
> >> I wasn't thinking quite that far, though that is also a theoretical
> >> problem. However, the simple solution would be to have a bit in the DMA
> >> specifier
On 16/09/16 13:05, Laurent Pinchart wrote:
[...]
One concern I have is that we might get an awkward situation if we ever
encounter one DMA engine hardware that is used in different systems that
all have an IOMMU, but on some of them the connection between the DMA
master and the
On Friday, September 16, 2016 3:09:29 PM CEST Laurent Pinchart wrote:
> > I wasn't thinking quite that far, though that is also a theoretical
> > problem. However, the simple solution would be to have a bit in the DMA
> > specifier let the driver know whether translation is needed or not.
> >
> >
Hi Arnd,
On Friday 16 Sep 2016 14:02:35 Arnd Bergmann wrote:
> On Friday, September 16, 2016 12:48:23 PM CEST Laurent Pinchart wrote:
> > On Friday 16 Sep 2016 11:07:48 Arnd Bergmann wrote:
> >> On Thursday, September 15, 2016 9:56:51 PM CEST Vinod Koul wrote:
> >>> On Wed, Aug 10, 2016 at
Hi Rubin,
On Friday 16 Sep 2016 11:36:29 Robin Murphy wrote:
> On 16/09/16 10:48, Laurent Pinchart wrote:
> > On Friday 16 Sep 2016 11:07:48 Arnd Bergmann wrote:
> >> On Thursday, September 15, 2016 9:56:51 PM CEST Vinod Koul wrote:
> >>> On Wed, Aug 10, 2016 at 11:07:10PM +0530, Vinod Koul
On Friday, September 16, 2016 12:48:23 PM CEST Laurent Pinchart wrote:
> On Friday 16 Sep 2016 11:07:48 Arnd Bergmann wrote:
> > On Thursday, September 15, 2016 9:56:51 PM CEST Vinod Koul wrote:
> > > On Wed, Aug 10, 2016 at 11:07:10PM +0530, Vinod Koul wrote:
> > >> On Wed, Aug 10, 2016 at
On 16/09/16 10:48, Laurent Pinchart wrote:
> Hi Arnd,
>
> On Friday 16 Sep 2016 11:07:48 Arnd Bergmann wrote:
>> On Thursday, September 15, 2016 9:56:51 PM CEST Vinod Koul wrote:
>>> On Wed, Aug 10, 2016 at 11:07:10PM +0530, Vinod Koul wrote:
On Wed, Aug 10, 2016 at 01:22:13PM +0200, Niklas
Hi Arnd,
On Friday 16 Sep 2016 11:07:48 Arnd Bergmann wrote:
> On Thursday, September 15, 2016 9:56:51 PM CEST Vinod Koul wrote:
> > On Wed, Aug 10, 2016 at 11:07:10PM +0530, Vinod Koul wrote:
> >> On Wed, Aug 10, 2016 at 01:22:13PM +0200, Niklas Söderlund wrote:
> >>> Hi,
> >>>
> >>> This
On Thursday, September 15, 2016 9:56:51 PM CEST Vinod Koul wrote:
> On Wed, Aug 10, 2016 at 11:07:10PM +0530, Vinod Koul wrote:
> > On Wed, Aug 10, 2016 at 01:22:13PM +0200, Niklas Söderlund wrote:
> > > Hi,
> > >
> > > This series tries to solve the problem with DMA with device registers
> > >
On Wed, Aug 10, 2016 at 11:07:10PM +0530, Vinod Koul wrote:
> On Wed, Aug 10, 2016 at 01:22:13PM +0200, Niklas Söderlund wrote:
> > Hi,
> >
> > This series tries to solve the problem with DMA with device registers
> > (MMIO registers) that are behind an IOMMU for the rcar-dmac driver. A
> >
On Wed, Aug 10, 2016 at 01:22:13PM +0200, Niklas Söderlund wrote:
> Hi,
>
> This series tries to solve the problem with DMA with device registers
> (MMIO registers) that are behind an IOMMU for the rcar-dmac driver. A
> recent patch '9575632 (dmaengine: make slave address physical)'
> clarifies
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