Hi Joerg,
On 11/08/15 10:37, Joerg Roedel wrote:
On Fri, Aug 07, 2015 at 02:38:39PM +0100, Robin Murphy wrote:
Indeed, DMA_DEBUG will check that a driver is making DMA API calls
to the arch code in the right way; this is a different check, to
catch things like the arch code passing the wrong do
On Fri, Aug 07, 2015 at 02:38:39PM +0100, Robin Murphy wrote:
> Indeed, DMA_DEBUG will check that a driver is making DMA API calls
> to the arch code in the right way; this is a different check, to
> catch things like the arch code passing the wrong domain into this
> layer, or someone else having
Hi Joerg,
Thanks for taking a look,
On 07/08/15 09:42, Joerg Roedel wrote:
On Fri, Jul 31, 2015 at 06:18:27PM +0100, Robin Murphy wrote:
+int iommu_get_dma_cookie(struct iommu_domain *domain)
+{
+ struct iova_domain *iovad;
+
+ if (domain->dma_api_cookie)
+ return -EE
On Fri, Jul 31, 2015 at 06:18:27PM +0100, Robin Murphy wrote:
> +int iommu_get_dma_cookie(struct iommu_domain *domain)
> +{
> + struct iova_domain *iovad;
> +
> + if (domain->dma_api_cookie)
> + return -EEXIST;
Why do you call that dma_api_cookie? It is just a pointer to an iov
Hi Will,
On Thu, Aug 06, 2015 at 04:23:27PM +0100, Will Deacon wrote:
> We're quite keen to get this in for arm64, since we're without IOMMU DMA
> ops and need to get something upstream. Do you think this is likely to
> be merged for 4.3/4.4 or would we be better off doing our own
> arch-private i
Joerg,
On Fri, Jul 31, 2015 at 06:18:27PM +0100, Robin Murphy wrote:
> Taking inspiration from the existing arch/arm code, break out some
> generic functions to interface the DMA-API to the IOMMU-API. This will
> do the bulk of the heavy lifting for IOMMU-backed dma-mapping.
>
> Signed-off-by: Ro
On Fri, Jul 31, 2015 at 06:18:27PM +0100, Robin Murphy wrote:
> Taking inspiration from the existing arch/arm code, break out some
> generic functions to interface the DMA-API to the IOMMU-API. This will
> do the bulk of the heavy lifting for IOMMU-backed dma-mapping.
>
> Signed-off-by: Robin Murp
Taking inspiration from the existing arch/arm code, break out some
generic functions to interface the DMA-API to the IOMMU-API. This will
do the bulk of the heavy lifting for IOMMU-backed dma-mapping.
Signed-off-by: Robin Murphy
---
drivers/iommu/Kconfig | 7 +
drivers/iommu/Makefile|
