From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Pierre Morel Subject: [PATCH 2/4] vfio: vfio_iommu_type1: Define VFIO_IOMMU_INFO_CAPABILITIES Date: Fri, 10 May 2019 10:22:33 +0200 In-Reply-To: <1557476555-20256-1-git-send-email-pmorel@linux.ibm.com> References: <1557476555-20256-1-git-send-email-pmorel@linux.ibm.com> Message-Id: <1557476555-20256-3-git-send-email-pmorel@linux.ibm.com> Sender: kvm-owner@vger.kernel.org List-Archive: List-Post: 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 List-ID: 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 --- 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