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Tue, 5 Apr 2022 16:16:07 +0000 From: Jason Gunthorpe To: Alex Williamson , Lu Baolu , Christian Benvenuti , Cornelia Huck , David Woodhouse , Gerald Schaefer , iommu@lists.linux-foundation.org, Jason Wang , Joerg Roedel , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org, Matthew Rosato , "Michael S. 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Signed-off-by: Jason Gunthorpe --- drivers/iommu/amd/iommu.c | 2 -- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 2 -- drivers/iommu/arm/arm-smmu/arm-smmu.c | 6 ------ drivers/iommu/arm/arm-smmu/qcom_iommu.c | 6 ------ drivers/iommu/fsl_pamu_domain.c | 6 ------ drivers/iommu/intel/iommu.c | 2 -- drivers/iommu/s390-iommu.c | 2 -- include/linux/iommu.h | 2 -- 8 files changed, 28 deletions(-) diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index e500b487eb3429..f144eb9fea8e31 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2156,8 +2156,6 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, static bool amd_iommu_capable(enum iommu_cap cap) { switch (cap) { - case IOMMU_CAP_CACHE_COHERENCY: - return true; case IOMMU_CAP_INTR_REMAP: return (irq_remapping_enabled == 1); case IOMMU_CAP_NOEXEC: diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 627a3ed5ee8fd1..c4115015a633a7 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -1986,8 +1986,6 @@ static const struct iommu_flush_ops arm_smmu_flush_ops = { static bool arm_smmu_capable(enum iommu_cap cap) { switch (cap) { - case IOMMU_CAP_CACHE_COHERENCY: - return true; case IOMMU_CAP_NOEXEC: return true; default: diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 568cce590ccc13..166bf45ac3d444 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1333,12 +1333,6 @@ static phys_addr_t arm_smmu_iova_to_phys(struct iommu_domain *domain, static bool arm_smmu_capable(enum iommu_cap cap) { switch (cap) { - case IOMMU_CAP_CACHE_COHERENCY: - /* - * Return true here as the SMMU can always send out coherent - * requests. - */ - return true; case IOMMU_CAP_NOEXEC: return true; default: diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c index 4c077c38fbd64f..fc72465fc63d50 100644 --- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c +++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c @@ -496,12 +496,6 @@ static phys_addr_t qcom_iommu_iova_to_phys(struct iommu_domain *domain, static bool qcom_iommu_capable(enum iommu_cap cap) { switch (cap) { - case IOMMU_CAP_CACHE_COHERENCY: - /* - * Return true here as the SMMU can always send out coherent - * requests. - */ - return true; case IOMMU_CAP_NOEXEC: return true; default: diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 69a4a62dc3b9c7..9f80285dab2951 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -177,11 +177,6 @@ static phys_addr_t fsl_pamu_iova_to_phys(struct iommu_domain *domain, return iova; } -static bool fsl_pamu_capable(enum iommu_cap cap) -{ - return cap == IOMMU_CAP_CACHE_COHERENCY; -} - static void fsl_pamu_domain_free(struct iommu_domain *domain) { struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); @@ -451,7 +446,6 @@ static void fsl_pamu_release_device(struct device *dev) } static const struct iommu_ops fsl_pamu_ops = { - .capable = fsl_pamu_capable, .domain_alloc = fsl_pamu_domain_alloc, .probe_device = fsl_pamu_probe_device, .release_device = fsl_pamu_release_device, diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 0ca43671d934e9..e5062461ab0640 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4557,8 +4557,6 @@ static bool intel_iommu_enforce_cache_coherency(struct iommu_domain *domain) static bool intel_iommu_capable(enum iommu_cap cap) { - if (cap == IOMMU_CAP_CACHE_COHERENCY) - return domain_update_iommu_snooping(NULL); if (cap == IOMMU_CAP_INTR_REMAP) return irq_remapping_enabled == 1; diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index 3833e86c6e7b8a..3dbf9663246552 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -42,8 +42,6 @@ static struct s390_domain *to_s390_domain(struct iommu_domain *dom) static bool s390_iommu_capable(enum iommu_cap cap) { switch (cap) { - case IOMMU_CAP_CACHE_COHERENCY: - return true; case IOMMU_CAP_INTR_REMAP: return true; default: diff --git a/include/linux/iommu.h b/include/linux/iommu.h index fe4f24c469c373..aebb73bda19797 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -103,8 +103,6 @@ static inline bool iommu_is_dma_domain(struct iommu_domain *domain) } enum iommu_cap { - IOMMU_CAP_CACHE_COHERENCY, /* IOMMU can enforce cache coherent DMA - transactions */ IOMMU_CAP_INTR_REMAP, /* IOMMU supports interrupt isolation */ IOMMU_CAP_NOEXEC, /* IOMMU_NOEXEC flag */ };