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_probe_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) : 1;
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
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