Messages in this thread Patch in this message | | | From | Zhen Lei <> | Subject | [PATCH v3 5/6] iommu/arm-smmu-v3: add support for non-strict mode | Date | Thu, 12 Jul 2018 14:18:31 +0800 |
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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 <thunder.leizhen@huawei.com> --- 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 4402187..4a198a0 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); + return ops->unmap(ops, iova | IOMMU_DOMAIN_STRICT_MODE(domain), size); } 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_STRICT_MODE(domain) == IOMMU_STRICT)) __arm_smmu_tlb_sync(smmu); } -- 1.8.3
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