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Groups > linux.kernel > #1651817
| From | Xiaoguang Chen <xiaoguang.chen@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations |
| Date | 2017-05-27 10:50 +0200 |
| Message-ID | <tLFA6-QN-19@gated-at.bofh.it> (permalink) |
| References | <tLFA5-QN-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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
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[PATCH v6 0/6] drm/i915/gvt: Dma-buf support for GVT-g Xiaoguang Chen <xiaoguang.chen@intel.com> - 2017-05-27 10:50 +0200
[PATCH v6 2/6] drm/i915/gvt: OpRegion support for GVT-g Xiaoguang Chen <xiaoguang.chen@intel.com> - 2017-05-27 10:50 +0200
Re: [PATCH v6 2/6] drm/i915/gvt: OpRegion support for GVT-g Zhenyu Wang <zhenyuw@linux.intel.com> - 2017-05-31 07:00 +0200
RE: [PATCH v6 2/6] drm/i915/gvt: OpRegion support for GVT-g "Chen, Xiaoguang" <xiaoguang.chen@intel.com> - 2017-05-31 08:30 +0200
Re: [PATCH v6 2/6] drm/i915/gvt: OpRegion support for GVT-g Zhenyu Wang <zhenyuw@linux.intel.com> - 2017-05-31 08:40 +0200
RE: [PATCH v6 2/6] drm/i915/gvt: OpRegion support for GVT-g "Chen, Xiaoguang" <xiaoguang.chen@intel.com> - 2017-05-31 08:50 +0200
[PATCH v6 5/6] drm/i915/gvt: Dmabuf support for GVT-g Xiaoguang Chen <xiaoguang.chen@intel.com> - 2017-05-27 10:50 +0200
Re: [PATCH v6 5/6] drm/i915/gvt: Dmabuf support for GVT-g Gerd Hoffmann <kraxel@redhat.com> - 2017-05-31 14:10 +0200
RE: [PATCH v6 5/6] drm/i915/gvt: Dmabuf support for GVT-g "Chen, Xiaoguang" <xiaoguang.chen@intel.com> - 2017-06-01 05:10 +0200
Re: [PATCH v6 5/6] drm/i915/gvt: Dmabuf support for GVT-g Chris Wilson <chris@chris-wilson.co.uk> - 2017-06-01 11:20 +0200
[PATCH v6 1/6] drm/i915/gvt: Extend the GVT-g architecture to support vfio device region Xiaoguang Chen <xiaoguang.chen@intel.com> - 2017-05-27 10:50 +0200
[PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Xiaoguang Chen <xiaoguang.chen@intel.com> - 2017-05-27 10:50 +0200
Re: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Gerd Hoffmann <kraxel@redhat.com> - 2017-05-29 09:30 +0200
RE: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations "Chen, Xiaoguang" <xiaoguang.chen@intel.com> - 2017-05-31 08:20 +0200
Re: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Kirti Wankhede <kwankhede@nvidia.com> - 2017-05-31 19:30 +0200
RE: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations "Chen, Xiaoguang" <xiaoguang.chen@intel.com> - 2017-06-01 05:10 +0200
Re: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Alex Williamson <alex.williamson@redhat.com> - 2017-06-01 18:40 +0200
Re: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Kirti Wankhede <kwankhede@nvidia.com> - 2017-06-01 20:50 +0200
Re: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Gerd Hoffmann <kraxel@redhat.com> - 2017-06-02 10:40 +0200
Re: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Kirti Wankhede <kwankhede@nvidia.com> - 2017-06-05 10:30 +0200
Re: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations Gerd Hoffmann <kraxel@redhat.com> - 2017-06-06 10:00 +0200
Re: [PATCH v6 0/6] drm/i915/gvt: Dma-buf support for GVT-g Gerd Hoffmann <kraxel@redhat.com> - 2017-05-30 12:30 +0200
RE: [PATCH v6 0/6] drm/i915/gvt: Dma-buf support for GVT-g "Chen, Xiaoguang" <xiaoguang.chen@intel.com> - 2017-05-31 04:30 +0200
Re: [PATCH v6 0/6] drm/i915/gvt: Dma-buf support for GVT-g Gerd Hoffmann <kraxel@redhat.com> - 2017-05-31 11:00 +0200
RE: [PATCH v6 0/6] drm/i915/gvt: Dma-buf support for GVT-g "Chen, Xiaoguang" <xiaoguang.chen@intel.com> - 2017-05-31 11:10 +0200
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