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Groups > linux.kernel > #1522833
| From | Kirti Wankhede <kwankhede@nvidia.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v13 20/22] docs: Sysfs ABI for mediated device framework |
| Date | 2016-11-15 16:40 +0100 |
| Message-ID | <sDO02-6JS-11@gated-at.bofh.it> (permalink) |
| References | <sDNQl-6Go-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Added details of sysfs ABI for mediated device framework Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com> Signed-off-by: Neo Jia <cjia@nvidia.com> Change-Id: Icb0fd4ed58a2fa793fbcb1c3d5009a4403c1f3ac --- Documentation/ABI/testing/sysfs-bus-vfio-mdev | 111 ++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-vfio-mdev diff --git a/Documentation/ABI/testing/sysfs-bus-vfio-mdev b/Documentation/ABI/testing/sysfs-bus-vfio-mdev new file mode 100644 index 000000000000..452dbe39270e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-vfio-mdev @@ -0,0 +1,111 @@ +What: /sys/.../<device>/mdev_supported_types/ +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + This directory contains list of directories of currently + supported mediated device types and their details for + <device>. Supported type attributes are defined by the + vendor driver who registers with Mediated device framework. + Each supported type is a directory whose name is created + by adding the device driver string as a prefix to the + string provided by the vendor driver. + +What: /sys/.../<device>/mdev_supported_types/<type-id>/ +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + This directory gives details of supported type, like name, + description, available_instances, device_api etc. + 'device_api' and 'available_instances' are mandatory + attributes to be provided by vendor driver. 'name', + 'description' and other vendor driver specific attributes + are optional. + +What: /sys/.../mdev_supported_types/<type-id>/create +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + Writing UUID to this file will create mediated device of + type <type-id> for parent device <device>. This is a + write-only file. + For example: + # echo "83b8f4f2-509f-382f-3c1e-e6bfe0fa1001" > \ + /sys/devices/foo/mdev_supported_types/foo-1/create + +What: /sys/.../mdev_supported_types/<type-id>/devices/ +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + This directory contains symbolic links pointing to mdev + devices sysfs entries which are created of this <type-id>. + +What: /sys/.../mdev_supported_types/<type-id>/available_instances +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + Reading this attribute will show the number of mediated + devices of type <type-id> that can be created. This is a + readonly file. +Users: + Userspace applications interested in creating mediated + device of that type. Userspace application should check + the number of available instances could be created before + creating mediated device of this type. + +What: /sys/.../mdev_supported_types/<type-id>/device_api +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + Reading this attribute will show VFIO device API supported + by this type. For example, "vfio-pci" for a PCI device, + "vfio-platform" for platform device. + +What: /sys/.../mdev_supported_types/<type-id>/name +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + Reading this attribute will show human readable name of the + mediated device that will get created of type <type-id>. + This is optional attribute. For example: "Grid M60-0Q" +Users: + Userspace applications interested in knowing the name of + a particular <type-id> that can help in understanding the + type of mediated device. + +What: /sys/.../mdev_supported_types/<type-id>/description +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + Reading this attribute will show description of the type of + mediated device that will get created of type <type-id>. + This is optional attribute. For example: + "2 heads, 512M FB, 2560x1600 maximum resolution" +Users: + Userspace applications interested in knowing the details of + a particular <type-id> that can help in understanding the + features provided by that type of mediated device. + +What: /sys/.../<device>/<UUID>/ +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + This directory represents device directory of mediated + device. It contains all the attributes related to mediated + device. + +What: /sys/.../<device>/<UUID>/mdev_type +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + This is symbolic link pointing to supported type, <type-id> + directory of which this mediated device is created. + +What: /sys/.../<device>/<UUID>/remove +Date: October 2016 +Contact: Kirti Wankhede <kwankhede@nvidia.com> +Description: + Writing '1' to this file destroys the mediated device. The + vendor driver can fail the remove() callback if that device + is active and the vendor driver doesn't support hot unplug. + Example: + # echo 1 > /sys/bus/mdev/devices/<UUID>/remove -- 2.7.0
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[PATCH v13 00/22] Add Mediated device support Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:30 +0100
[PATCH v13 05/22] vfio iommu: Added pin and unpin callback functions to vfio_iommu_driver_ops Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:30 +0100
Re: [PATCH v13 05/22] vfio iommu: Added pin and unpin callback functions to vfio_iommu_driver_ops Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-16 16:10 +0100
[PATCH v13 10/22] vfio iommu type1: Add support for mediated devices Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:30 +0100
Re: [PATCH v13 10/22] vfio iommu type1: Add support for mediated devices Alex Williamson <alex.williamson@redhat.com> - 2016-11-15 22:00 +0100
[PATCH v13 02/22] vfio: VFIO based driver for Mediated devices Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:30 +0100
Re: [PATCH v13 02/22] vfio: VFIO based driver for Mediated devices Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-16 16:10 +0100
[PATCH v13 06/22] vfio iommu type1: Update arguments of vfio_lock_acct Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 15/22] vfio: Introduce vfio_set_irqs_validate_and_prepare() Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 08/22] vfio iommu type1: Add find_iommu_group() function Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 20/22] docs: Sysfs ABI for mediated device framework Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 16/22] vfio_pci: Updated to use vfio_set_irqs_validate_and_prepare() Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 17/22] vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare() Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 19/22] docs: Add Documentation for Mediated devices Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 18/22] vfio: Define device_api strings Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 13/22] vfio: Introduce common function to add capabilities Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 01/22] vfio: Mediated device Core driver Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 22/22] MAINTAINERS: Add entry VFIO based Mediated device drivers Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 03/22] vfio: Rearrange functions to get vfio_group from dev Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
[PATCH v13 12/22] vfio: Add notifier callback to parent's ops structure of mdev Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-15 16:40 +0100
Re: [PATCH v13 12/22] vfio: Add notifier callback to parent's ops structure of mdev Kirti Wankhede <kwankhede@nvidia.com> - 2016-11-16 16:30 +0100
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