[PATCH 7/7] iommu/arm-smmu-v3: add support for non-strict mode
From: Zhen Lei <hidden>
Date: 2018-05-31 07:44:00
Also in:
linux-arm-msm, linux-iommu, linux-mediatek, lkml
Subsystem:
iommu subsystem, the rest · Maintainers:
Joerg Roedel, Will Deacon, Linus Torvalds
1. Add IOMMU_CAP_NON_STRICT capability. 2. Dynamic choose strict or non-strict mode base on the iommu domain type. Signed-off-by: Zhen Lei <redacted> --- drivers/iommu/arm-smmu-v3.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 59b3387..25bccbd 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c@@ -1440,6 +1440,8 @@ static bool arm_smmu_capable(enum iommu_cap cap) return true; case IOMMU_CAP_NOEXEC: return true; + case IOMMU_CAP_NON_STRICT: + return true; default: return false; }
@@ -1767,7 +1769,7 @@ static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova, if (!ops) return 0; - return ops->unmap(ops, iova, size, IOMMU_STRICT); + return ops->unmap(ops, iova, size, IOMMU_DOMAIN_IS_STRICT(domain)); } static void arm_smmu_flush_iotlb_all(struct iommu_domain *domain)
@@ -1782,7 +1784,7 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain) { struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu; - if (smmu) + if (smmu && IOMMU_DOMAIN_IS_STRICT(domain)) __arm_smmu_tlb_sync(smmu); }
--
1.8.3