1 2 /** 3 * struct bus_type_private - structure to hold the private to the driver core portions of the bus_type structure. 4 * 5 * @subsys - the struct kset that defines this bus. This is the main kobject 6 * @drivers_kset - the list of drivers associated with this bus 7 * @devices_kset - the list of devices associated with this bus 8 * @klist_devices - the klist to iterate over the @devices_kset 9 * @klist_drivers - the klist to iterate over the @drivers_kset 10 * @bus_notifier - the bus notifier list for anything that cares about things 11 * on this bus. 12 * @bus - pointer back to the struct bus_type that this structure is associated 13 * with. 14 * 15 * This structure is the one that is the actual kobject allowing struct 16 * bus_type to be statically allocated safely. Nothing outside of the driver 17 * core should ever touch these fields. 18 */ 19 struct bus_type_private { 20 struct kset subsys; 21 struct kset *drivers_kset; 22 struct kset *devices_kset; 23 struct klist klist_devices; 24 struct klist klist_drivers; 25 struct blocking_notifier_head bus_notifier; 26 unsigned int drivers_autoprobe:1; 27 struct bus_type *bus; 28 }; 29 30 struct driver_private { 31 struct kobject kobj; 32 struct klist klist_devices; 33 struct klist_node knode_bus; 34 struct module_kobject *mkobj; 35 struct device_driver *driver; 36 }; 37 #define to_driver(obj) container_of(obj, struct driver_private, kobj) 38 39 40 /** 41 * struct class_private - structure to hold the private to the driver core portions of the class structure. 42 * 43 * @class_subsys - the struct kset that defines this class. This is the main kobject 44 * @class_devices - list of devices associated with this class 45 * @class_interfaces - list of class_interfaces associated with this class 46 * @class_dirs - "glue" directory for virtual devices associated with this class 47 * @class_mutex - mutex to protect the children, devices, and interfaces lists. 48 * @class - pointer back to the struct class that this structure is associated 49 * with. 50 * 51 * This structure is the one that is the actual kobject allowing struct 52 * class to be statically allocated safely. Nothing outside of the driver 53 * core should ever touch these fields. 54 */ 55 struct class_private { 56 struct kset class_subsys; 57 struct klist class_devices; 58 struct list_head class_interfaces; 59 struct kset class_dirs; 60 struct mutex class_mutex; 61 struct class *class; 62 }; 63 #define to_class(obj) \ 64 container_of(obj, struct class_private, class_subsys.kobj) 65 66 /** 67 * struct device_private - structure to hold the private to the driver core portions of the device structure. 68 * 69 * @klist_children - klist containing all children of this device 70 * @knode_parent - node in sibling list 71 * @knode_driver - node in driver list 72 * @knode_bus - node in bus list 73 * @device - pointer back to the struct class that this structure is 74 * associated with. 75 * 76 * Nothing outside of the driver core should ever touch these fields. 77 */ 78 struct device_private { 79 struct klist klist_children; 80 struct klist_node knode_parent; 81 struct klist_node knode_driver; 82 struct klist_node knode_bus; 83 struct device *device; 84 }; 85 #define to_device_private_parent(obj) \ 86 container_of(obj, struct device_private, knode_parent) 87 #define to_device_private_driver(obj) \ 88 container_of(obj, struct device_private, knode_driver) 89 #define to_device_private_bus(obj) \ 90 container_of(obj, struct device_private, knode_bus) 91 92 /* initialisation functions */ 93 extern int devices_init(void); 94 extern int buses_init(void); 95 extern int classes_init(void); 96 extern int firmware_init(void); 97 #ifdef CONFIG_SYS_HYPERVISOR 98 extern int hypervisor_init(void); 99 #else 100 static inline int hypervisor_init(void) { return 0; } 101 #endif 102 extern int platform_bus_init(void); 103 extern int system_bus_init(void); 104 extern int cpu_dev_init(void); 105 106 extern int bus_add_device(struct device *dev); 107 extern void bus_attach_device(struct device *dev); 108 extern void bus_remove_device(struct device *dev); 109 110 extern int bus_add_driver(struct device_driver *drv); 111 extern void bus_remove_driver(struct device_driver *drv); 112 113 extern void driver_detach(struct device_driver *drv); 114 extern int driver_probe_device(struct device_driver *drv, struct device *dev); 115 static inline int driver_match_device(struct device_driver *drv, 116 struct device *dev) 117 { 118 return drv->bus->match && drv->bus->match(dev, drv); 119 } 120 121 extern void sysdev_shutdown(void); 122 123 extern char *make_class_name(const char *name, struct kobject *kobj); 124 125 extern int devres_release_all(struct device *dev); 126 127 extern struct kset *devices_kset; 128 129 #if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS) 130 extern void module_add_driver(struct module *mod, struct device_driver *drv); 131 extern void module_remove_driver(struct device_driver *drv); 132 #else 133 static inline void module_add_driver(struct module *mod, 134 struct device_driver *drv) { } 135 static inline void module_remove_driver(struct device_driver *drv) { } 136 #endif 137