1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Mediated device interal definitions 4 * 5 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. 6 * Author: Neo Jia <cjia@nvidia.com> 7 * Kirti Wankhede <kwankhede@nvidia.com> 8 */ 9 10 #ifndef MDEV_PRIVATE_H 11 #define MDEV_PRIVATE_H 12 13 int mdev_bus_register(void); 14 void mdev_bus_unregister(void); 15 16 struct mdev_parent { 17 struct device *dev; 18 const struct mdev_parent_ops *ops; 19 struct kref ref; 20 struct list_head next; 21 struct kset *mdev_types_kset; 22 struct list_head type_list; 23 /* Synchronize device creation/removal with parent unregistration */ 24 struct rw_semaphore unreg_sem; 25 }; 26 27 struct mdev_device { 28 struct device dev; 29 struct mdev_parent *parent; 30 guid_t uuid; 31 void *driver_data; 32 struct list_head next; 33 struct kobject *type_kobj; 34 struct device *iommu_device; 35 bool active; 36 }; 37 38 #define to_mdev_device(dev) container_of(dev, struct mdev_device, dev) 39 #define dev_is_mdev(d) ((d)->bus == &mdev_bus_type) 40 41 struct mdev_type { 42 struct kobject kobj; 43 struct kobject *devices_kobj; 44 struct mdev_parent *parent; 45 struct list_head next; 46 struct attribute_group *group; 47 }; 48 49 #define to_mdev_type_attr(_attr) \ 50 container_of(_attr, struct mdev_type_attribute, attr) 51 #define to_mdev_type(_kobj) \ 52 container_of(_kobj, struct mdev_type, kobj) 53 54 int parent_create_sysfs_files(struct mdev_parent *parent); 55 void parent_remove_sysfs_files(struct mdev_parent *parent); 56 57 int mdev_create_sysfs_files(struct device *dev, struct mdev_type *type); 58 void mdev_remove_sysfs_files(struct device *dev, struct mdev_type *type); 59 60 int mdev_device_create(struct kobject *kobj, 61 struct device *dev, const guid_t *uuid); 62 int mdev_device_remove(struct device *dev); 63 64 #endif /* MDEV_PRIVATE_H */ 65