[PATCH 2/4] vfio: vfio_iommu_type1: Define VFIO_IOMMU_INFO_CAPABILITIES

Pierre Morel
2019-05-10T08:22:33Z

To use the VFIO_IOMMU_GET_INFO to retrieve IOMMU specific information,
we define a new flag VFIO_IOMMU_INFO_CAPABILITIES in the
vfio_iommu_type1_info structure and the associated capability
information block.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
include/uapi/linux/vfio.h | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 8f10748..8f68e0f 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -715,6 +715,16 @@ struct vfio_iommu_type1_info {
__u32 flags;
#define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */
__u64 iova_pgsizes; /* Bitmap of supported page sizes */
+#define VFIO_IOMMU_INFO_CAPABILITIES (1 << 1) /* support capabilities info */
+ __u64 cap_offset; /* Offset within info struct of first cap */
+};
+
+#define VFIO_IOMMU_INFO_CAP_QFN 1
+#define VFIO_IOMMU_INFO_CAP_QGRP 2
+
+struct vfio_iommu_type1_info_block {
+ struct vfio_info_cap_header header;
+ __u32 data[];
};

#define VFIO_IOMMU_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
--
2.7.4