diff options
Diffstat (limited to 'Documentation/driver-api')
| -rw-r--r-- | Documentation/driver-api/vfio-mediated-device.rst | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/driver-api/vfio-mediated-device.rst b/Documentation/driver-api/vfio-mediated-device.rst index 66bd00d7aecf..f47dca6645aa 100644 --- a/Documentation/driver-api/vfio-mediated-device.rst +++ b/Documentation/driver-api/vfio-mediated-device.rst @@ -112,11 +112,11 @@ to register and unregister itself with the core driver: * Register:: - extern int mdev_register_driver(struct mdev_driver *drv); + int mdev_register_driver(struct mdev_driver *drv); * Unregister:: - extern void mdev_unregister_driver(struct mdev_driver *drv); + void mdev_unregister_driver(struct mdev_driver *drv); 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 @@ -125,8 +125,8 @@ 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, - struct mdev_driver *mdev_driver); + int mdev_register_device(struct device *dev, + 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 @@ -134,7 +134,7 @@ attached to the specified driver. When the driver needs to remove itself it calls:: - extern void mdev_unregister_device(struct device *dev); + void mdev_unregister_device(struct device *dev); Which will unbind and destroy all the created mdevs and remove the sysfs files. @@ -260,10 +260,10 @@ Translation APIs for Mediated Devices The following APIs are provided for translating user pfn to host pfn in a VFIO driver:: - int vfio_pin_pages(struct vfio_device *device, unsigned long *user_pfn, - int npage, int prot, unsigned long *phys_pfn); + int vfio_pin_pages(struct vfio_device *device, dma_addr_t iova, + int npage, int prot, struct page **pages); - int vfio_unpin_pages(struct vfio_device *device, unsigned long *user_pfn, + void vfio_unpin_pages(struct vfio_device *device, dma_addr_t iova, int npage); These functions call back into the back-end IOMMU module by using the pin_pages |