1 /* 2 * Mediated device interal definitions 3 * 4 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. 5 * Author: Neo Jia <cjia@nvidia.com> 6 * Kirti Wankhede <kwankhede@nvidia.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #ifndef MDEV_PRIVATE_H 14 #define MDEV_PRIVATE_H 15 16 int mdev_bus_register(void); 17 void mdev_bus_unregister(void); 18 19 struct mdev_parent { 20 struct device *dev; 21 const struct mdev_parent_ops *ops; 22 struct kref ref; 23 struct list_head next; 24 struct kset *mdev_types_kset; 25 struct list_head type_list; 26 /* Synchronize device creation/removal with parent unregistration */ 27 struct rw_semaphore unreg_sem; 28 }; 29 30 struct mdev_device { 31 struct device dev; 32 struct mdev_parent *parent; 33 guid_t uuid; 34 void *driver_data; 35 struct list_head next; 36 struct kobject *type_kobj; 37 struct device *iommu_device; 38 bool active; 39 }; 40 41 #define to_mdev_device(dev) container_of(dev, struct mdev_device, dev) 42 #define dev_is_mdev(d) ((d)->bus == &mdev_bus_type) 43 44 struct mdev_type { 45 struct kobject kobj; 46 struct kobject *devices_kobj; 47 struct mdev_parent *parent; 48 struct list_head next; 49 struct attribute_group *group; 50 }; 51 52 #define to_mdev_type_attr(_attr) \ 53 container_of(_attr, struct mdev_type_attribute, attr) 54 #define to_mdev_type(_kobj) \ 55 container_of(_kobj, struct mdev_type, kobj) 56 57 int parent_create_sysfs_files(struct mdev_parent *parent); 58 void parent_remove_sysfs_files(struct mdev_parent *parent); 59 60 int mdev_create_sysfs_files(struct device *dev, struct mdev_type *type); 61 void mdev_remove_sysfs_files(struct device *dev, struct mdev_type *type); 62 63 int mdev_device_create(struct kobject *kobj, 64 struct device *dev, const guid_t *uuid); 65 int mdev_device_remove(struct device *dev); 66 67 #endif /* MDEV_PRIVATE_H */ 68