[Qemu-devel] [PATCH v3 1/5] vfio: vfio_iommu_type1: linux header place holder

[Matthew Rosato <mjrosato@linux.ibm.com>]

From: Pierre Morel <pmorel@linux.ibm.com>

This should be copied from Linux kernel UAPI includes.
The version used here is Linux 5.3.0

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@linux.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
---
 linux-headers/linux/vfio.h      |  7 ++++---
 linux-headers/linux/vfio_zdev.h | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 3 deletions(-)
 create mode 100644 linux-headers/linux/vfio_zdev.h

diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index 24f5051..8328c87 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -9,8 +9,8 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#ifndef VFIO_H
-#define VFIO_H
+#ifndef _UAPIVFIO_H
+#define _UAPIVFIO_H
 
 #include <linux/types.h>
 #include <linux/ioctl.h>
@@ -371,6 +371,7 @@ struct vfio_region_gfx_edid {
  * to do TLB invalidation on a GPU.
  */
 #define VFIO_REGION_SUBTYPE_IBM_NVLINK2_ATSD	(1)
+#define VFIO_REGION_SUBTYPE_ZDEV_CLP		(2)
 
 /*
  * The MSIX mappable capability informs that MSIX data of a BAR can be mmapped
@@ -914,4 +915,4 @@ struct vfio_iommu_spapr_tce_remove {
 
 /* ***************************************************************** */
 
-#endif /* VFIO_H */
+#endif /* _UAPIVFIO_H */
diff --git a/linux-headers/linux/vfio_zdev.h b/linux-headers/linux/vfio_zdev.h
new file mode 100644
index 0000000..2b912a5
--- /dev/null
+++ b/linux-headers/linux/vfio_zdev.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Region definition for ZPCI devices
+ *
+ * Copyright IBM Corp. 2019
+ *
+ * Author(s): Pierre Morel <pmorel@linux.ibm.com>
+ */
+
+#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;
+	__u16 maxstbl;
+	__u8 version;
+	__u8 gid;
+#define VFIO_PCI_ZDEV_FLAGS_REFRESH 1
+	__u8 util_str[];
+} __attribute__ ((__packed__));
+
+#endif
-- 
1.8.3.1