From: Laurentiu Tudor <laurentiu.tu...@nxp.com> Add an implementation of the newly introduced dma map op in the generic DMA IOMMU generic glue layer and wire it up.
Signed-off-by: Laurentiu Tudor <laurentiu.tu...@nxp.com> --- drivers/iommu/dma-iommu.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index f321279baf9e..98742c1451ce 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -1091,6 +1091,18 @@ static unsigned long iommu_dma_get_merge_boundary(struct device *dev) return (1UL << __ffs(domain->pgsize_bitmap)) - 1; } +static void *iommu_dma_get_virt_addr(struct device *dev, dma_addr_t dma_handle) +{ + struct iommu_domain *domain = iommu_get_dma_domain(dev); + phys_addr_t phys; + + phys = iommu_iova_to_phys(domain, dma_handle); + if (phys) + return phys_to_virt(phys); + + return NULL; +} + static const struct dma_map_ops iommu_dma_ops = { .alloc = iommu_dma_alloc, .free = iommu_dma_free, @@ -1107,6 +1119,7 @@ static const struct dma_map_ops iommu_dma_ops = { .map_resource = iommu_dma_map_resource, .unmap_resource = iommu_dma_unmap_resource, .get_merge_boundary = iommu_dma_get_merge_boundary, + .get_virt_addr = iommu_dma_get_virt_addr, }; /* -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu