Fold the arm_smmu_dev_has_feature arm_smmu_dev_feature_enabled into
the main methods.
Signed-off-by: Christoph Hellwig <h...@lst.de>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 55 ++++++---------------
1 file 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 4a5e435567f17..d32b02336411d 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;
--
2.30.2
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