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| author | Christoph Hellwig <hch@lst.de> | 2022-07-08 10:06:16 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-07-15 10:13:47 +0200 |
| commit | 469b7b8ac552041d038d0451a5e1343a8d6080c0 (patch) | |
| tree | f00c40b98a4e654ff6a66ac56af562c63f7c0370 /drivers/iommu | |
| parent | iommu: remove the put_resv_regions method (diff) | |
| download | linux-469b7b8ac552041d038d0451a5e1343a8d6080c0.tar.xz linux-469b7b8ac552041d038d0451a5e1343a8d6080c0.zip | |
iommu/arm-smmu-v3: cleanup arm_smmu_dev_{enable,disable}_feature
Fold the arm_smmu_dev_has_feature arm_smmu_dev_feature_enabled into
the main methods.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220708080616.238833-5-hch@lst.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 55 |
1 files changed, 14 insertions, 41 deletions
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 4a5e435567f1..d32b02336411 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2765,58 +2765,27 @@ static void arm_smmu_get_resv_regions(struct device *dev, iommu_dma_get_resv_regions(dev, head); } -static bool arm_smmu_dev_has_feature(struct device *dev, - enum iommu_dev_features feat) -{ - struct arm_smmu_master *master = dev_iommu_priv_get(dev); - - if (!master) - return false; - - switch (feat) { - case IOMMU_DEV_FEAT_IOPF: - return arm_smmu_master_iopf_supported(master); - case IOMMU_DEV_FEAT_SVA: - return arm_smmu_master_sva_supported(master); - default: - return false; - } -} - -static bool arm_smmu_dev_feature_enabled(struct device *dev, - enum iommu_dev_features feat) -{ - struct arm_smmu_master *master = dev_iommu_priv_get(dev); - - if (!master) - return false; - - switch (feat) { - case IOMMU_DEV_FEAT_IOPF: - return master->iopf_enabled; - case IOMMU_DEV_FEAT_SVA: - return arm_smmu_master_sva_enabled(master); - default: - return false; - } -} - static int arm_smmu_dev_enable_feature(struct device *dev, enum iommu_dev_features feat) { struct arm_smmu_master *master = dev_iommu_priv_get(dev); - if (!arm_smmu_dev_has_feature(dev, feat)) + if (!master) return -ENODEV; - if (arm_smmu_dev_feature_enabled(dev, feat)) - return -EBUSY; - switch (feat) { case IOMMU_DEV_FEAT_IOPF: + if (!arm_smmu_master_iopf_supported(master)) + return -EINVAL; + if (master->iopf_enabled) + return -EBUSY; master->iopf_enabled = true; return 0; case IOMMU_DEV_FEAT_SVA: + if (!arm_smmu_master_sva_supported(master)) + return -EINVAL; + if (arm_smmu_master_sva_enabled(master)) + return -EBUSY; return arm_smmu_master_enable_sva(master); default: return -EINVAL; @@ -2828,16 +2797,20 @@ static int arm_smmu_dev_disable_feature(struct device *dev, { struct arm_smmu_master *master = dev_iommu_priv_get(dev); - if (!arm_smmu_dev_feature_enabled(dev, feat)) + if (!master) return -EINVAL; switch (feat) { case IOMMU_DEV_FEAT_IOPF: + if (!master->iopf_enabled) + return -EINVAL; if (master->sva_enabled) return -EBUSY; master->iopf_enabled = false; return 0; case IOMMU_DEV_FEAT_SVA: + if (!arm_smmu_master_sva_enabled(master)) + return -EINVAL; return arm_smmu_master_disable_sva(master); default: return -EINVAL; |