xref: /openbmc/linux/drivers/base/base.h (revision 49b420a1)
1a1bdc7aaSBen Dooks 
2c6f7e72aSGreg Kroah-Hartman /**
3c6f7e72aSGreg Kroah-Hartman  * struct bus_type_private - structure to hold the private to the driver core portions of the bus_type structure.
4c6f7e72aSGreg Kroah-Hartman  *
5c6f7e72aSGreg Kroah-Hartman  * @subsys - the struct kset that defines this bus.  This is the main kobject
6c6f7e72aSGreg Kroah-Hartman  * @drivers_kset - the list of drivers associated with this bus
7c6f7e72aSGreg Kroah-Hartman  * @devices_kset - the list of devices associated with this bus
8c6f7e72aSGreg Kroah-Hartman  * @klist_devices - the klist to iterate over the @devices_kset
9c6f7e72aSGreg Kroah-Hartman  * @klist_drivers - the klist to iterate over the @drivers_kset
10c6f7e72aSGreg Kroah-Hartman  * @bus_notifier - the bus notifier list for anything that cares about things
11c6f7e72aSGreg Kroah-Hartman  * on this bus.
12c6f7e72aSGreg Kroah-Hartman  * @bus - pointer back to the struct bus_type that this structure is associated
13c6f7e72aSGreg Kroah-Hartman  * with.
14c6f7e72aSGreg Kroah-Hartman  *
15c6f7e72aSGreg Kroah-Hartman  * This structure is the one that is the actual kobject allowing struct
16c6f7e72aSGreg Kroah-Hartman  * bus_type to be statically allocated safely.  Nothing outside of the driver
17c6f7e72aSGreg Kroah-Hartman  * core should ever touch these fields.
18c6f7e72aSGreg Kroah-Hartman  */
19c6f7e72aSGreg Kroah-Hartman struct bus_type_private {
20c6f7e72aSGreg Kroah-Hartman 	struct kset subsys;
21c6f7e72aSGreg Kroah-Hartman 	struct kset *drivers_kset;
22c6f7e72aSGreg Kroah-Hartman 	struct kset *devices_kset;
23c6f7e72aSGreg Kroah-Hartman 	struct klist klist_devices;
24c6f7e72aSGreg Kroah-Hartman 	struct klist klist_drivers;
25c6f7e72aSGreg Kroah-Hartman 	struct blocking_notifier_head bus_notifier;
26c6f7e72aSGreg Kroah-Hartman 	unsigned int drivers_autoprobe:1;
27c6f7e72aSGreg Kroah-Hartman 	struct bus_type *bus;
28c6f7e72aSGreg Kroah-Hartman };
29a1bdc7aaSBen Dooks 
30e5dd1278SGreg Kroah-Hartman struct driver_private {
31e5dd1278SGreg Kroah-Hartman 	struct kobject kobj;
32e5dd1278SGreg Kroah-Hartman 	struct klist klist_devices;
33e5dd1278SGreg Kroah-Hartman 	struct klist_node knode_bus;
34e5dd1278SGreg Kroah-Hartman 	struct module_kobject *mkobj;
35e5dd1278SGreg Kroah-Hartman 	struct device_driver *driver;
36e5dd1278SGreg Kroah-Hartman };
37e5dd1278SGreg Kroah-Hartman #define to_driver(obj) container_of(obj, struct driver_private, kobj)
38c6f7e72aSGreg Kroah-Hartman 
397c71448bSGreg Kroah-Hartman 
407c71448bSGreg Kroah-Hartman /**
417c71448bSGreg Kroah-Hartman  * struct class_private - structure to hold the private to the driver core portions of the class structure.
427c71448bSGreg Kroah-Hartman  *
431fbfee6cSGreg Kroah-Hartman  * @class_subsys - the struct kset that defines this class.  This is the main kobject
4497ae69fdSGreg Kroah-Hartman  * @class_devices - list of devices associated with this class
45184f1f77SGreg Kroah-Hartman  * @class_interfaces - list of class_interfaces associated with this class
461e412508SGreg Kroah-Hartman  * @class_dirs - "glue" directory for virtual devices associated with this class
47f75b1c60SDave Young  * @class_mutex - mutex to protect the children, devices, and interfaces lists.
487c71448bSGreg Kroah-Hartman  * @class - pointer back to the struct class that this structure is associated
497c71448bSGreg Kroah-Hartman  * with.
507c71448bSGreg Kroah-Hartman  *
517c71448bSGreg Kroah-Hartman  * This structure is the one that is the actual kobject allowing struct
527c71448bSGreg Kroah-Hartman  * class to be statically allocated safely.  Nothing outside of the driver
537c71448bSGreg Kroah-Hartman  * core should ever touch these fields.
547c71448bSGreg Kroah-Hartman  */
557c71448bSGreg Kroah-Hartman struct class_private {
561fbfee6cSGreg Kroah-Hartman 	struct kset class_subsys;
575a3ceb86STejun Heo 	struct klist class_devices;
58184f1f77SGreg Kroah-Hartman 	struct list_head class_interfaces;
597c71448bSGreg Kroah-Hartman 	struct kset class_dirs;
60f75b1c60SDave Young 	struct mutex class_mutex;
617c71448bSGreg Kroah-Hartman 	struct class *class;
627c71448bSGreg Kroah-Hartman };
631fbfee6cSGreg Kroah-Hartman #define to_class(obj)	\
641fbfee6cSGreg Kroah-Hartman 	container_of(obj, struct class_private, class_subsys.kobj)
657c71448bSGreg Kroah-Hartman 
66c6f7e72aSGreg Kroah-Hartman /* initialisation functions */
67a1bdc7aaSBen Dooks extern int devices_init(void);
68a1bdc7aaSBen Dooks extern int buses_init(void);
69a1bdc7aaSBen Dooks extern int classes_init(void);
70a1bdc7aaSBen Dooks extern int firmware_init(void);
714039483fSMichael Holzheu #ifdef CONFIG_SYS_HYPERVISOR
724039483fSMichael Holzheu extern int hypervisor_init(void);
734039483fSMichael Holzheu #else
744039483fSMichael Holzheu static inline int hypervisor_init(void) { return 0; }
754039483fSMichael Holzheu #endif
76a1bdc7aaSBen Dooks extern int platform_bus_init(void);
77a1bdc7aaSBen Dooks extern int system_bus_init(void);
78a1bdc7aaSBen Dooks extern int cpu_dev_init(void);
79a1bdc7aaSBen Dooks 
801da177e4SLinus Torvalds extern int bus_add_device(struct device *dev);
81c6a46696SCornelia Huck extern void bus_attach_device(struct device *dev);
821da177e4SLinus Torvalds extern void bus_remove_device(struct device *dev);
831da177e4SLinus Torvalds 
844a3ad20cSGreg Kroah-Hartman extern int bus_add_driver(struct device_driver *drv);
854a3ad20cSGreg Kroah-Hartman extern void bus_remove_driver(struct device_driver *drv);
861da177e4SLinus Torvalds 
8707e4a3e2Smochel@digitalimplant.org extern void driver_detach(struct device_driver *drv);
884a3ad20cSGreg Kroah-Hartman extern int driver_probe_device(struct device_driver *drv, struct device *dev);
8949b420a1SMing Lei static inline int driver_match_device(struct device_driver *drv,
9049b420a1SMing Lei 				      struct device *dev)
9149b420a1SMing Lei {
9249b420a1SMing Lei 	return drv->bus->match && drv->bus->match(dev, drv);
9349b420a1SMing Lei }
9407e4a3e2Smochel@digitalimplant.org 
95f67d115fSAdrian Bunk extern void sysdev_shutdown(void);
96f67d115fSAdrian Bunk 
97aa49b913SGreg Kroah-Hartman extern char *make_class_name(const char *name, struct kobject *kobj);
981da177e4SLinus Torvalds 
992a013455SAdrian Bunk extern int devres_release_all(struct device *dev);
100823bccfcSGreg Kroah-Hartman 
101881c6cfdSGreg Kroah-Hartman extern struct kset *devices_kset;
102c63469a3SGreg Kroah-Hartman 
10392b42141SRandy Dunlap #if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
104c63469a3SGreg Kroah-Hartman extern void module_add_driver(struct module *mod, struct device_driver *drv);
105c63469a3SGreg Kroah-Hartman extern void module_remove_driver(struct device_driver *drv);
106c63469a3SGreg Kroah-Hartman #else
107c63469a3SGreg Kroah-Hartman static inline void module_add_driver(struct module *mod,
108c63469a3SGreg Kroah-Hartman 				     struct device_driver *drv) { }
109c63469a3SGreg Kroah-Hartman static inline void module_remove_driver(struct device_driver *drv) { }
110c63469a3SGreg Kroah-Hartman #endif
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