From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Matthew Rosato Subject: [PATCH v4 3/4] vfio: zpci: defining the VFIO headers Date: Fri, 6 Sep 2019 20:13:50 -0400 Message-Id: <1567815231-17940-4-git-send-email-mjrosato@linux.ibm.com> In-Reply-To: <1567815231-17940-1-git-send-email-mjrosato@linux.ibm.com> References: <1567815231-17940-1-git-send-email-mjrosato@linux.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: To: sebott@linux.ibm.com Cc: gerald.schaefer@de.ibm.com, pasic@linux.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, heiko.carstens@de.ibm.com, robin.murphy@arm.com, gor@linux.ibm.com, cohuck@redhat.com, pmorel@linux.ibm.com From: Pierre Morel 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 Signed-off-by: Matthew Rosato --- include/uapi/linux/vfio.h | 1 + include/uapi/linux/vfio_zdev.h | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 36 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..8328c87 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.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 diff --git a/include/uapi/linux/vfio_zdev.h b/include/uapi/linux/vfio_zdev.h new file mode 100644 index 0000000..55e0d6d --- /dev/null +++ b/include/uapi/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 + */ + +#ifndef _VFIO_ZDEV_H_ +#define _VFIO_ZDEV_H_ + +#include + +/** + * 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[]; +} __packed; + +#endif -- 1.8.3.1