From: Xiaoguang Chen <xiaoguang.chen@intel.com>
To: alex.williamson@redhat.com, kraxel@redhat.com,
chris@chris-wilson.co.uk, intel-gfx@lists.freedesktop.org,
linux-kernel@vger.kernel.org, zhenyuw@linux.intel.com,
zhiyuan.lv@intel.com, intel-gvt-dev@lists.freedesktop.org,
zhi.a.wang@intel.com, kevin.tian@intel.com
Cc: Xiaoguang Chen <xiaoguang.chen@intel.com>
Subject: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations
Date: Sat, 27 May 2017 16:38:50 +0800 [thread overview]
Message-ID: <1495874332-2851-5-git-send-email-xiaoguang.chen@intel.com> (raw)
In-Reply-To: <1495874332-2851-1-git-send-email-xiaoguang.chen@intel.com>
Here we defined a new ioctl to create a fd for a vfio device based on
the input type. Now only one type is supported that is a dma-buf
management fd.
Two ioctls are defined for the dma-buf management fd: query the vfio
vgpu's plane information and create a dma-buf for a plane.
Signed-off-by: Xiaoguang Chen <xiaoguang.chen@intel.com>
---
include/uapi/linux/vfio.h | 50 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index ae46105..308e7a2 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -502,6 +502,56 @@ struct vfio_pci_hot_reset {
#define VFIO_DEVICE_PCI_HOT_RESET _IO(VFIO_TYPE, VFIO_BASE + 13)
+/**
+ * VFIO_DEVICE_GET_FD - _IO(VFIO_TYPE, VFIO_BASE + 14, __u32)
+ *
+ * Create a fd for a vfio device based on the input type
+ * Vendor driver should handle this ioctl to create a fd and manage the
+ * life cycle of this fd.
+ *
+ * Return: a fd if vendor support that type, -errno if not supported
+ */
+
+#define VFIO_DEVICE_GET_FD _IO(VFIO_TYPE, VFIO_BASE + 14)
+
+#define VFIO_DEVICE_DMABUF_MGR_FD 0 /* Supported fd types */
+
+/*
+ * VFIO_DEVICE_QUERY_PLANE - _IO(VFIO_TYPE, VFIO_BASE + 15, struct plane_info)
+ * Query plane information for a plane
+ */
+struct vfio_vgpu_plane_info {
+ __u32 argsz;
+ __u32 flags;
+ __u32 plane_id;
+ __u32 drm_format;
+ __u32 width;
+ __u32 height;
+ __u32 stride;
+ __u32 start;
+ __u32 x_pos;
+ __u32 y_pos;
+ __u64 drm_format_mod;
+ __u32 size;
+ __u32 pad;
+};
+
+#define VFIO_DEVICE_QUERY_PLANE _IO(VFIO_TYPE, VFIO_BASE + 15)
+
+/*
+ * VFIO_DEVICE_CREATE_DMABUF - _IO(VFIO, VFIO_BASE + 16, struct dmabuf_info)
+ *
+ * Create a dma-buf for a plane
+ */
+struct vfio_vgpu_dmabuf_info {
+ __u32 argsz;
+ __u32 flags;
+ struct vfio_vgpu_plane_info plane_info;
+ __s32 fd;
+ __u32 pad;
+};
+#define VFIO_DEVICE_CREATE_DMABUF _IO(VFIO_TYPE, VFIO_BASE + 16)
+
/* -------- API for Type1 VFIO IOMMU -------- */
/**
--
2.7.4
next prev parent reply other threads:[~2017-05-27 8:40 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-27 8:38 [PATCH v6 0/6] drm/i915/gvt: Dma-buf support for GVT-g Xiaoguang Chen
2017-05-27 8:38 ` [PATCH v6 1/6] drm/i915/gvt: Extend the GVT-g architecture to support vfio device region Xiaoguang Chen
2017-05-27 8:38 ` [PATCH v6 2/6] drm/i915/gvt: OpRegion support for GVT-g Xiaoguang Chen
2017-05-31 4:47 ` Zhenyu Wang
2017-05-31 6:22 ` Chen, Xiaoguang
2017-05-31 6:30 ` Zhenyu Wang
2017-05-31 6:44 ` Chen, Xiaoguang
2017-05-27 8:38 ` [PATCH v6 3/6] drm/i915/gvt: Frame buffer decoder " Xiaoguang Chen
2017-05-31 5:12 ` Zhenyu Wang
2017-05-31 6:46 ` Chen, Xiaoguang
2017-05-27 8:38 ` Xiaoguang Chen [this message]
2017-05-29 7:20 ` [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Gerd Hoffmann
2017-05-31 6:18 ` Chen, Xiaoguang
2017-05-31 17:22 ` Kirti Wankhede
2017-06-01 3:01 ` Chen, Xiaoguang
2017-06-01 16:38 ` Alex Williamson
2017-06-01 18:46 ` Kirti Wankhede
2017-06-02 8:38 ` Gerd Hoffmann
2017-06-05 8:26 ` Kirti Wankhede
2017-06-06 7:59 ` Gerd Hoffmann
2017-05-27 8:38 ` [PATCH v6 5/6] drm/i915/gvt: Dmabuf support for GVT-g Xiaoguang Chen
2017-05-31 12:04 ` Gerd Hoffmann
2017-06-01 3:02 ` Chen, Xiaoguang
2017-06-01 9:15 ` Chris Wilson
2017-05-27 8:38 ` [PATCH v6 6/6] drm/i915/gvt: Adding interface so user space can get the dma-buf Xiaoguang Chen
2017-06-01 18:08 ` Alex Williamson
2017-06-02 3:24 ` Chen, Xiaoguang
2017-06-02 3:34 ` Alex Williamson
2017-06-02 9:31 ` Chen, Xiaoguang
2017-06-02 14:58 ` Alex Williamson
2017-06-02 15:23 ` Gerd Hoffmann
2017-06-05 2:39 ` Chen, Xiaoguang
2017-06-06 7:35 ` Gerd Hoffmann
2017-05-30 10:23 ` [PATCH v6 0/6] drm/i915/gvt: Dma-buf support for GVT-g Gerd Hoffmann
2017-05-31 2:29 ` Chen, Xiaoguang
2017-05-31 8:59 ` Gerd Hoffmann
2017-05-31 9:07 ` Chen, Xiaoguang
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