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From: Pierre Morel <pmorel@linux.ibm.com>
To: sebott@linux.vnet.ibm.com
Cc: gerald.schaefer@de.ibm.com, pasic@linux.vnet.ibm.com,
	borntraeger@de.ibm.com, walling@linux.ibm.com,
	linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org,
	joro@8bytes.org, linux-kernel@vger.kernel.org,
	alex.williamson@redhat.com, kvm@vger.kernel.org,
	schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com,
	robin.murphy@arm.com
Subject: [PATCH v3 2/3] vfio: zpci: defining the VFIO headers
Date: Thu, 23 May 2019 14:25:25 +0200	[thread overview]
Message-ID: <1558614326-24711-3-git-send-email-pmorel@linux.ibm.com> (raw)
In-Reply-To: <1558614326-24711-1-git-send-email-pmorel@linux.ibm.com>

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>
---
 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@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;
+	__u8 gid;
+	__u8 version;
+#define VFIO_PCI_ZDEV_FLAGS_REFRESH 1
+	__u8 util_str[CLP_UTIL_STR_LEN];
+} __packed;
+
+#endif
-- 
2.7.4


  parent reply	other threads:[~2019-05-23 12:25 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-23 12:25 [PATCH v3 0/3] Retrieving zPCI specific info with VFIO Pierre Morel
2019-05-23 12:25 ` [PATCH v3 1/3] s390: pci: Exporting access to CLP PCI function and PCI group Pierre Morel
2019-05-23 12:25 ` Pierre Morel [this message]
2019-05-23 16:24   ` [PATCH v3 2/3] vfio: zpci: defining the VFIO headers Cornelia Huck
2019-05-28 21:54     ` Alex Williamson
2019-05-28 21:43   ` Alex Williamson
2019-05-28 21:46     ` Alex Williamson
2019-05-23 12:25 ` [PATCH v3 3/3] vfio: pci: Using a device region to retrieve zPCI information Pierre Morel
2019-05-28 21:41   ` Alex Williamson

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