diff options
author | Jason Gunthorpe <jgg@nvidia.com> | 2022-04-11 16:14:01 +0200 |
---|---|---|
committer | Zhi Wang <zhi.a.wang@intel.com> | 2022-04-21 07:36:56 -0400 |
commit | 6b42f491e17ce13f5ff7f2d1f49c73a0f4c47b20 (patch) | |
tree | d95f75eb0e8101b4d0c1fbe7287a9ee3013749f8 /Documentation/driver-api | |
parent | e6486939d8ea22569af942a1888aa3824f59cc5e (diff) | |
download | linux-stable-6b42f491e17ce13f5ff7f2d1f49c73a0f4c47b20.tar.gz linux-stable-6b42f491e17ce13f5ff7f2d1f49c73a0f4c47b20.tar.bz2 linux-stable-6b42f491e17ce13f5ff7f2d1f49c73a0f4c47b20.zip |
vfio/mdev: Remove mdev_parent_ops
The last useful member in this struct is the supported_type_groups, move
it to the mdev_driver and delete mdev_parent_ops.
Replace it with mdev_driver as an argument to mdev_register_device()
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220411141403.86980-33-hch@lst.de
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Diffstat (limited to 'Documentation/driver-api')
-rw-r--r-- | Documentation/driver-api/vfio-mediated-device.rst | 24 |
1 files changed, 5 insertions, 19 deletions
diff --git a/Documentation/driver-api/vfio-mediated-device.rst b/Documentation/driver-api/vfio-mediated-device.rst index 5a6e18a651a1..784bbeb22adc 100644 --- a/Documentation/driver-api/vfio-mediated-device.rst +++ b/Documentation/driver-api/vfio-mediated-device.rst @@ -105,6 +105,7 @@ structure to represent a mediated device's driver:: struct mdev_driver { int (*probe) (struct mdev_device *dev); void (*remove) (struct mdev_device *dev); + struct attribute_group **supported_type_groups; struct device_driver driver; }; @@ -119,30 +120,15 @@ to register and unregister itself with the core driver: extern void mdev_unregister_driver(struct mdev_driver *drv); -The mediated bus driver is responsible for adding mediated devices to the VFIO -group when devices are bound to the driver and removing mediated devices from -the VFIO when devices are unbound from the driver. - - -Physical Device Driver Interface --------------------------------- - -The physical device driver interface provides the mdev_parent_ops[3] structure -to define the APIs to manage work in the mediated core driver that is related -to the physical device. - -The structures in the mdev_parent_ops structure are as follows: - -* dev_attr_groups: attributes of the parent device -* mdev_attr_groups: attributes of the mediated device -* supported_config: attributes to define supported configurations -* device_driver: device driver to bind for mediated device instances +The mediated bus driver's probe function should create a vfio_device on top of +the mdev_device and connect it to an appropriate implementation of +vfio_device_ops. When a driver wants to add the GUID creation sysfs to an existing device it has probe'd to then it should call:: extern int mdev_register_device(struct device *dev, - const struct mdev_parent_ops *ops); + struct mdev_driver *mdev_driver); This will provide the 'mdev_supported_types/XX/create' files which can then be used to trigger the creation of a mdev_device. The created mdev_device will be |