Hi Olav,
Olav Haugan <ohaugan@xxxxxxxxxxxxxx> writes:
> @@ -93,6 +94,10 @@ enum iommu_attr {
> * @detach_dev: detach device from an iommu domain
> * @map: map a physically contiguous memory region to an iommu domain
> * @unmap: unmap a physically contiguous memory region from an iommu domain
> + * @map_sg: map a scatter-gather list of physically contiguous memory chunks
> + * to an iommu domain
> + * @unmap_sg: unmap a scatter-gather list of physically contiguous memory
> + * chunks from an iommu domain
> * @iova_to_phys: translate iova to physical address
> * @domain_has_cap: domain capabilities query
> * @add_device: add device to iommu grouping
> @@ -110,6 +115,11 @@ struct iommu_ops {
> phys_addr_t paddr, size_t size, int prot);
> size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
> size_t size);
> + int (*map_sg)(struct iommu_domain *domain, unsigned long iova,
> + struct scatterlist *sg, unsigned int nents, int prot,
> + unsigned long flags);
> + int (*unmap_sg)(struct iommu_domain *domain, unsigned long iova,
> + size_t size, unsigned long flags);
Do you have any exmaple/explanation for the above "flags"?
Is this going to be used for iommu global/standard attribute or SoC
spcific one?
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