We define a new device region in vfio.h to be able to
get the ZPCI CLP information by reading this region from
userland.
We create a new file, vfio_zdev.h to define the structure
of the new region we defined in vfio.h
Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
---
include/uapi/linux/vfio.h | 4 ++++
include/uapi/linux/vfio_zdev.h | 34 ++++++++++++++++++++++++++++++++++
2 files changed, 38 insertions(+)
create mode 100644 include/uapi/linux/vfio_zdev.h
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 8f10748..56595b8 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -306,6 +306,10 @@ struct vfio_region_info_cap_type {
#define VFIO_REGION_TYPE_GFX (1)
#define VFIO_REGION_SUBTYPE_GFX_EDID (1)
+/* IBM Subtypes */
+#define VFIO_REGION_TYPE_IBM_ZDEV (1)
+#define VFIO_REGION_SUBTYPE_ZDEV_CLP (1)
+
/**
* struct vfio_region_gfx_edid - EDID region layout.
*
diff --git a/include/uapi/linux/vfio_zdev.h b/include/uapi/linux/vfio_zdev.h
new file mode 100644
index 0000000..84b1a82
--- /dev/null
+++ b/include/uapi/linux/vfio_zdev.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Region definition for ZPCI devices
+ *
+ * Copyright IBM Corp. 2019
+ *
+ * Author(s): Pierre Morel <pmorel@xxxxxxxxxxxxx>
+ */
+
+#ifndef _VFIO_ZDEV_H_
+#define _VFIO_ZDEV_H_
+
+#include <linux/types.h>
+
+/**
+ * struct vfio_region_zpci_info - ZPCI information.
+ *
+ */
+struct vfio_region_zpci_info {
+ __u64 dasm;
+ __u64 start_dma;
+ __u64 end_dma;
+ __u64 msi_addr;
+ __u64 flags;
+ __u16 pchid;
+ __u16 mui;
+ __u16 noi;
+ __u8 gid;
+ __u8 version;
+#define VFIO_PCI_ZDEV_FLAGS_REFRESH 1
+ __u8 util_str[CLP_UTIL_STR_LEN];
+} __packed;
+
+#endif
--
2.7.4
