1 files changed, 59 insertions, 0 deletions
diff --git a/include/uapi/linux/iommu.h b/include/uapi/linux/iommu.h
index f3e96214df8e..4ad3496e5c43 100644
--- a/include/uapi/linux/iommu.h
+++ b/include/uapi/linux/iommu.h
@@ -262,4 +262,63 @@ struct iommu_cache_invalidate_info {
 	};
 };
 
+/**
+ * struct iommu_gpasid_bind_data_vtd - Intel VT-d specific data on device and guest
+ * SVA binding.
+ *
+ * @flags:	VT-d PASID table entry attributes
+ * @pat:	Page attribute table data to compute effective memory type
+ * @emt:	Extended memory type
+ *
+ * Only guest vIOMMU selectable and effective options are passed down to
+ * the host IOMMU.
+ */
+struct iommu_gpasid_bind_data_vtd {
+#define IOMMU_SVA_VTD_GPASID_SRE	(1 << 0) /* supervisor request */
+#define IOMMU_SVA_VTD_GPASID_EAFE	(1 << 1) /* extended access enable */
+#define IOMMU_SVA_VTD_GPASID_PCD	(1 << 2) /* page-level cache disable */
+#define IOMMU_SVA_VTD_GPASID_PWT	(1 << 3) /* page-level write through */
+#define IOMMU_SVA_VTD_GPASID_EMTE	(1 << 4) /* extended mem type enable */
+#define IOMMU_SVA_VTD_GPASID_CD		(1 << 5) /* PASID-level cache disable */
+	__u64 flags;
+	__u32 pat;
+	__u32 emt;
+};
+
+/**
+ * struct iommu_gpasid_bind_data - Information about device and guest PASID binding
+ * @version:	Version of this data structure
+ * @format:	PASID table entry format
+ * @flags:	Additional information on guest bind request
+ * @gpgd:	Guest page directory base of the guest mm to bind
+ * @hpasid:	Process address space ID used for the guest mm in host IOMMU
+ * @gpasid:	Process address space ID used for the guest mm in guest IOMMU
+ * @addr_width:	Guest virtual address width
+ * @padding:	Reserved for future use (should be zero)
+ * @vtd:	Intel VT-d specific data
+ *
+ * Guest to host PASID mapping can be an identity or non-identity, where guest
+ * has its own PASID space. For non-identify mapping, guest to host PASID lookup
+ * is needed when VM programs guest PASID into an assigned device. VMM may
+ * trap such PASID programming then request host IOMMU driver to convert guest
+ * PASID to host PASID based on this bind data.
+ */
+struct iommu_gpasid_bind_data {
+#define IOMMU_GPASID_BIND_VERSION_1	1
+	__u32 version;
+#define IOMMU_PASID_FORMAT_INTEL_VTD	1
+	__u32 format;
+#define IOMMU_SVA_GPASID_VAL	(1 << 0) /* guest PASID valid */
+	__u64 flags;
+	__u64 gpgd;
+	__u64 hpasid;
+	__u64 gpasid;
+	__u32 addr_width;
+	__u8  padding[12];
+	/* Vendor specific data */
+	union {
+		struct iommu_gpasid_bind_data_vtd vtd;
+	};
+};
+
 #endif /* _UAPI_IOMMU_H */