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From: Pierre Morel <pmorel@linux.ibm.com>
To: alex.williamson@redhat.com
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	walling@linux.ibm.com, cohuck@redhat.com, david@redhat.com,
	pasic@linux.ibm.com, thuth@redhat.com
Subject: [PATCH v1 1/2] vfio:iommu: Use capabilities do report IOMMU informations
Date: Wed,  9 Jan 2019 13:41:53 +0100	[thread overview]
Message-ID: <1547037714-21592-2-git-send-email-pmorel@linux.ibm.com> (raw)
In-Reply-To: <1547037714-21592-1-git-send-email-pmorel@linux.ibm.com>

We add a new flag, VFIO_IOMMU_INFO_CAPABILITIES, inside the
vfio_iommu_type1_info to specify the support for capabilities.

We add a new capability, with id VFIO_IOMMU_INFO_CAP_DMA
in the capability list of the VFIO_IOMMU_GET_INFO ioctl.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
 include/uapi/linux/vfio.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 8131028..54c4fcb 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -669,6 +669,15 @@ 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_DMA 1
+struct vfio_iommu_cap_dma {
+	struct vfio_info_cap_header header;
+	__u64   dma_start;
+	__u64   dma_end;
 };
 
 #define VFIO_IOMMU_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
-- 
2.7.4


  reply	other threads:[~2019-01-09 12:42 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-09 12:41 [PATCH v1 0/2] Get DMA information from real IOMMU Pierre Morel
2019-01-09 12:41 ` Pierre Morel [this message]
2019-01-09 15:37   ` [PATCH v1 1/2] vfio:iommu: Use capabilities do report IOMMU informations Alex Williamson
2019-01-09 17:07     ` Pierre Morel
2019-01-09 19:43       ` Alex Williamson
2019-01-10 12:47         ` Pierre Morel
2019-01-09 17:08     ` Shameerali Kolothum Thodi
2019-01-10  0:55       ` Tian, Kevin
2019-01-09 12:41 ` [PATCH v1 2/2] vfio:iommu: Get DMA information from real IOMMU Pierre Morel

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