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