1ba33162aSPaul Gortmaker #include <linux/notifier.h> 2a1bdc7aaSBen Dooks 3c6f7e72aSGreg Kroah-Hartman /** 46b6e39a6SKay Sievers * struct subsys_private - structure to hold the private to the driver core portions of the bus_type/class structure. 5c6f7e72aSGreg Kroah-Hartman * 66b6e39a6SKay Sievers * @subsys - the struct kset that defines this subsystem 7ca22e56dSKay Sievers * @devices_kset - the subsystem's 'devices' directory 8ca22e56dSKay Sievers * @interfaces - list of subsystem interfaces associated 9ca22e56dSKay Sievers * @mutex - protect the devices, and interfaces lists. 106b6e39a6SKay Sievers * 116b6e39a6SKay Sievers * @drivers_kset - the list of drivers associated 12c6f7e72aSGreg Kroah-Hartman * @klist_devices - the klist to iterate over the @devices_kset 13c6f7e72aSGreg Kroah-Hartman * @klist_drivers - the klist to iterate over the @drivers_kset 14c6f7e72aSGreg Kroah-Hartman * @bus_notifier - the bus notifier list for anything that cares about things 15c6f7e72aSGreg Kroah-Hartman * on this bus. 16c6f7e72aSGreg Kroah-Hartman * @bus - pointer back to the struct bus_type that this structure is associated 17c6f7e72aSGreg Kroah-Hartman * with. 18c6f7e72aSGreg Kroah-Hartman * 196b6e39a6SKay Sievers * @glue_dirs - "glue" directory to put in-between the parent device to 206b6e39a6SKay Sievers * avoid namespace conflicts 216b6e39a6SKay Sievers * @class - pointer back to the struct class that this structure is associated 226b6e39a6SKay Sievers * with. 236b6e39a6SKay Sievers * 24c6f7e72aSGreg Kroah-Hartman * This structure is the one that is the actual kobject allowing struct 256b6e39a6SKay Sievers * bus_type/class to be statically allocated safely. Nothing outside of the 266b6e39a6SKay Sievers * driver core should ever touch these fields. 27c6f7e72aSGreg Kroah-Hartman */ 286b6e39a6SKay Sievers struct subsys_private { 29c6f7e72aSGreg Kroah-Hartman struct kset subsys; 30c6f7e72aSGreg Kroah-Hartman struct kset *devices_kset; 31ca22e56dSKay Sievers struct list_head interfaces; 32ca22e56dSKay Sievers struct mutex mutex; 336b6e39a6SKay Sievers 346b6e39a6SKay Sievers struct kset *drivers_kset; 35c6f7e72aSGreg Kroah-Hartman struct klist klist_devices; 36c6f7e72aSGreg Kroah-Hartman struct klist klist_drivers; 37c6f7e72aSGreg Kroah-Hartman struct blocking_notifier_head bus_notifier; 38c6f7e72aSGreg Kroah-Hartman unsigned int drivers_autoprobe:1; 39c6f7e72aSGreg Kroah-Hartman struct bus_type *bus; 406b6e39a6SKay Sievers 416b6e39a6SKay Sievers struct kset glue_dirs; 426b6e39a6SKay Sievers struct class *class; 43c6f7e72aSGreg Kroah-Hartman }; 446b6e39a6SKay Sievers #define to_subsys_private(obj) container_of(obj, struct subsys_private, subsys.kobj) 45a1bdc7aaSBen Dooks 46e5dd1278SGreg Kroah-Hartman struct driver_private { 47e5dd1278SGreg Kroah-Hartman struct kobject kobj; 48e5dd1278SGreg Kroah-Hartman struct klist klist_devices; 49e5dd1278SGreg Kroah-Hartman struct klist_node knode_bus; 50e5dd1278SGreg Kroah-Hartman struct module_kobject *mkobj; 51e5dd1278SGreg Kroah-Hartman struct device_driver *driver; 52e5dd1278SGreg Kroah-Hartman }; 53e5dd1278SGreg Kroah-Hartman #define to_driver(obj) container_of(obj, struct driver_private, kobj) 54c6f7e72aSGreg Kroah-Hartman 55fb069a5dSGreg Kroah-Hartman /** 56fb069a5dSGreg Kroah-Hartman * struct device_private - structure to hold the private to the driver core portions of the device structure. 57fb069a5dSGreg Kroah-Hartman * 58f791b8c8SGreg Kroah-Hartman * @klist_children - klist containing all children of this device 59f791b8c8SGreg Kroah-Hartman * @knode_parent - node in sibling list 608940b4f3SGreg Kroah-Hartman * @knode_driver - node in driver list 61ae1b4171SGreg Kroah-Hartman * @knode_bus - node in bus list 62ef8a3fd6SGreg Kroah-Hartman * @deferred_probe - entry in deferred_probe_list which is used to retry the 63ef8a3fd6SGreg Kroah-Hartman * binding of drivers which were unable to get all the resources needed by 64ef8a3fd6SGreg Kroah-Hartman * the device; typically because it depends on another driver getting 65ef8a3fd6SGreg Kroah-Hartman * probed first. 66b4028437SGreg Kroah-Hartman * @driver_data - private pointer for driver specific info. Will turn into a 67b4028437SGreg Kroah-Hartman * list soon. 68fb069a5dSGreg Kroah-Hartman * @device - pointer back to the struct class that this structure is 69fb069a5dSGreg Kroah-Hartman * associated with. 70fb069a5dSGreg Kroah-Hartman * 71fb069a5dSGreg Kroah-Hartman * Nothing outside of the driver core should ever touch these fields. 72fb069a5dSGreg Kroah-Hartman */ 73fb069a5dSGreg Kroah-Hartman struct device_private { 74f791b8c8SGreg Kroah-Hartman struct klist klist_children; 75f791b8c8SGreg Kroah-Hartman struct klist_node knode_parent; 768940b4f3SGreg Kroah-Hartman struct klist_node knode_driver; 77ae1b4171SGreg Kroah-Hartman struct klist_node knode_bus; 78ef8a3fd6SGreg Kroah-Hartman struct list_head deferred_probe; 79b4028437SGreg Kroah-Hartman void *driver_data; 80fb069a5dSGreg Kroah-Hartman struct device *device; 81fb069a5dSGreg Kroah-Hartman }; 82f791b8c8SGreg Kroah-Hartman #define to_device_private_parent(obj) \ 83f791b8c8SGreg Kroah-Hartman container_of(obj, struct device_private, knode_parent) 848940b4f3SGreg Kroah-Hartman #define to_device_private_driver(obj) \ 858940b4f3SGreg Kroah-Hartman container_of(obj, struct device_private, knode_driver) 86ae1b4171SGreg Kroah-Hartman #define to_device_private_bus(obj) \ 87ae1b4171SGreg Kroah-Hartman container_of(obj, struct device_private, knode_bus) 88fb069a5dSGreg Kroah-Hartman 89b4028437SGreg Kroah-Hartman extern int device_private_init(struct device *dev); 90b4028437SGreg Kroah-Hartman 91c6f7e72aSGreg Kroah-Hartman /* initialisation functions */ 92a1bdc7aaSBen Dooks extern int devices_init(void); 93a1bdc7aaSBen Dooks extern int buses_init(void); 94a1bdc7aaSBen Dooks extern int classes_init(void); 95a1bdc7aaSBen Dooks extern int firmware_init(void); 964039483fSMichael Holzheu #ifdef CONFIG_SYS_HYPERVISOR 974039483fSMichael Holzheu extern int hypervisor_init(void); 984039483fSMichael Holzheu #else 994039483fSMichael Holzheu static inline int hypervisor_init(void) { return 0; } 1004039483fSMichael Holzheu #endif 101a1bdc7aaSBen Dooks extern int platform_bus_init(void); 102024f7846SBen Hutchings extern void cpu_dev_init(void); 103a1bdc7aaSBen Dooks 104d73ce004STejun Heo struct kobject *virtual_device_parent(struct device *dev); 105d73ce004STejun Heo 1061da177e4SLinus Torvalds extern int bus_add_device(struct device *dev); 1072023c610SAlan Stern extern void bus_probe_device(struct device *dev); 1081da177e4SLinus Torvalds extern void bus_remove_device(struct device *dev); 1091da177e4SLinus Torvalds 1104a3ad20cSGreg Kroah-Hartman extern int bus_add_driver(struct device_driver *drv); 1114a3ad20cSGreg Kroah-Hartman extern void bus_remove_driver(struct device_driver *drv); 1121da177e4SLinus Torvalds 11307e4a3e2Smochel@digitalimplant.org extern void driver_detach(struct device_driver *drv); 1144a3ad20cSGreg Kroah-Hartman extern int driver_probe_device(struct device_driver *drv, struct device *dev); 115d1c3414cSGrant Likely extern void driver_deferred_probe_del(struct device *dev); 11649b420a1SMing Lei static inline int driver_match_device(struct device_driver *drv, 11749b420a1SMing Lei struct device *dev) 11849b420a1SMing Lei { 1195247aecfSMing Lei return drv->bus->match ? drv->bus->match(dev, drv) : 1; 12049b420a1SMing Lei } 12107e4a3e2Smochel@digitalimplant.org 122aa49b913SGreg Kroah-Hartman extern char *make_class_name(const char *name, struct kobject *kobj); 1231da177e4SLinus Torvalds 1242a013455SAdrian Bunk extern int devres_release_all(struct device *dev); 125823bccfcSGreg Kroah-Hartman 126ca22e56dSKay Sievers /* /sys/devices directory */ 127881c6cfdSGreg Kroah-Hartman extern struct kset *devices_kset; 128c63469a3SGreg Kroah-Hartman 12992b42141SRandy Dunlap #if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS) 130c63469a3SGreg Kroah-Hartman extern void module_add_driver(struct module *mod, struct device_driver *drv); 131c63469a3SGreg Kroah-Hartman extern void module_remove_driver(struct device_driver *drv); 132c63469a3SGreg Kroah-Hartman #else 133c63469a3SGreg Kroah-Hartman static inline void module_add_driver(struct module *mod, 134c63469a3SGreg Kroah-Hartman struct device_driver *drv) { } 135c63469a3SGreg Kroah-Hartman static inline void module_remove_driver(struct device_driver *drv) { } 136c63469a3SGreg Kroah-Hartman #endif 1372b2af54aSKay Sievers 1382b2af54aSKay Sievers #ifdef CONFIG_DEVTMPFS 1392b2af54aSKay Sievers extern int devtmpfs_init(void); 1402b2af54aSKay Sievers #else 1412b2af54aSKay Sievers static inline int devtmpfs_init(void) { return 0; } 1422b2af54aSKay Sievers #endif 143