+static unsigned int uacce_enable_sva(struct device *parent, unsigned int flags)
+{
+ if (!(flags & UACCE_DEV_SVA))
+ return flags;
+
+ flags &= ~UACCE_DEV_SVA;
+
+ if (iommu_dev_enable_feature(parent, IOMMU_DEV_FEAT_IOPF))
+ return flags;
+
+ if (iommu_dev_enable_feature(parent, IOMMU_DEV_FEAT_SVA)) {
+ iommu_dev_disable_feature(parent, IOMMU_DEV_FEAT_IOPF);
+ return flags;
+ }
+
+ return flags | UACCE_DEV_SVA;
+}
+
+static void uacce_disable_sva(struct uacce_device *uacce)
+{
+ if (!(uacce->flags & UACCE_DEV_SVA))
+ return;
+
+ iommu_dev_disable_feature(uacce->parent, IOMMU_DEV_FEAT_SVA);
+ iommu_dev_disable_feature(uacce->parent, IOMMU_DEV_FEAT_IOPF);
+}
+