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authorNicolin Chen2020-09-11 00:16:42 -0700
committerJoerg Roedel2020-09-24 12:32:31 +0200
commit4fba98859b819961d8e1fe862b79052ff4b687b8 (patch)
tree424380625f3cdc54ea3b8ba2e4fc301e70d9de43 /drivers/iommu
parent82fa58e81d9edc77182aaba4110c3124481e6704 (diff)
iommu/tegra-smmu: Fix iova->phys translation
IOVA might not be always 4KB aligned. So tegra_smmu_iova_to_phys function needs to add on the lower 12-bit offset from input iova. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20200911071643.17212-3-nicoleotsuka@gmail.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/tegra-smmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index bd473e085aac..e6d142458950 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -795,7 +795,7 @@ static phys_addr_t tegra_smmu_iova_to_phys(struct iommu_domain *domain,
pfn = *pte & as->smmu->pfn_mask;
- return SMMU_PFN_PHYS(pfn);
+ return SMMU_PFN_PHYS(pfn) + SMMU_OFFSET_IN_PAGE(iova);
}
static struct tegra_smmu *tegra_smmu_find(struct device_node *np)