1 #include <linux/notifier.h>
4 * struct subsys_private - structure to hold the private to the driver core portions of the bus_type/class structure.
6 * @subsys - the struct kset that defines this subsystem
7 * @devices_kset - the subsystem's 'devices' directory
8 * @interfaces - list of subsystem interfaces associated
9 * @mutex - protect the devices, and interfaces lists.
11 * @drivers_kset - the list of drivers associated
12 * @klist_devices - the klist to iterate over the @devices_kset
13 * @klist_drivers - the klist to iterate over the @drivers_kset
14 * @bus_notifier - the bus notifier list for anything that cares about things
16 * @bus - pointer back to the struct bus_type that this structure is associated
19 * @glue_dirs - "glue" directory to put in-between the parent device to
20 * avoid namespace conflicts
21 * @class - pointer back to the struct class that this structure is associated
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.
28 struct subsys_private
{
30 struct kset
*devices_kset
;
31 struct list_head interfaces
;
34 struct kset
*drivers_kset
;
35 struct klist klist_devices
;
36 struct klist klist_drivers
;
37 struct blocking_notifier_head bus_notifier
;
38 unsigned int drivers_autoprobe
:1;
41 struct kset glue_dirs
;
44 #define to_subsys_private(obj) container_of(obj, struct subsys_private, subsys.kobj)
46 struct driver_private
{
48 struct klist klist_devices
;
49 struct klist_node knode_bus
;
50 struct module_kobject
*mkobj
;
51 struct device_driver
*driver
;
53 #define to_driver(obj) container_of(obj, struct driver_private, kobj)
56 * struct device_private - structure to hold the private to the driver core portions of the device structure.
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 * @deferred_probe - entry in deferred_probe_list which is used to retry the
63 * binding of drivers which were unable to get all the resources needed by
64 * the device; typically because it depends on another driver getting
66 * @device - pointer back to the struct device that this structure is
69 * Nothing outside of the driver core should ever touch these fields.
71 struct device_private
{
72 struct klist klist_children
;
73 struct klist_node knode_parent
;
74 struct klist_node knode_driver
;
75 struct klist_node knode_bus
;
76 struct list_head deferred_probe
;
77 struct device
*device
;
79 #define to_device_private_parent(obj) \
80 container_of(obj, struct device_private, knode_parent)
81 #define to_device_private_driver(obj) \
82 container_of(obj, struct device_private, knode_driver)
83 #define to_device_private_bus(obj) \
84 container_of(obj, struct device_private, knode_bus)
86 extern int device_private_init(struct device
*dev
);
88 /* initialisation functions */
89 extern int devices_init(void);
90 extern int buses_init(void);
91 extern int classes_init(void);
92 extern int firmware_init(void);
93 #ifdef CONFIG_SYS_HYPERVISOR
94 extern int hypervisor_init(void);
96 static inline int hypervisor_init(void) { return 0; }
98 extern int platform_bus_init(void);
99 extern void cpu_dev_init(void);
100 extern void container_dev_init(void);
102 struct kobject
*virtual_device_parent(struct device
*dev
);
104 extern int bus_add_device(struct device
*dev
);
105 extern void bus_probe_device(struct device
*dev
);
106 extern void bus_remove_device(struct device
*dev
);
108 extern int bus_add_driver(struct device_driver
*drv
);
109 extern void bus_remove_driver(struct device_driver
*drv
);
110 extern void device_release_driver_internal(struct device
*dev
,
111 struct device_driver
*drv
,
112 struct device
*parent
);
114 extern void driver_detach(struct device_driver
*drv
);
115 extern int driver_probe_device(struct device_driver
*drv
, struct device
*dev
);
116 extern void driver_deferred_probe_del(struct device
*dev
);
117 static inline int driver_match_device(struct device_driver
*drv
,
120 return drv
->bus
->match
? drv
->bus
->match(dev
, drv
) : 1;
122 extern bool driver_allows_async_probing(struct device_driver
*drv
);
124 extern int driver_add_groups(struct device_driver
*drv
,
125 const struct attribute_group
**groups
);
126 extern void driver_remove_groups(struct device_driver
*drv
,
127 const struct attribute_group
**groups
);
129 extern int device_add_groups(struct device
*dev
,
130 const struct attribute_group
**groups
);
131 extern void device_remove_groups(struct device
*dev
,
132 const struct attribute_group
**groups
);
134 extern char *make_class_name(const char *name
, struct kobject
*kobj
);
136 extern int devres_release_all(struct device
*dev
);
137 extern void device_block_probing(void);
138 extern void device_unblock_probing(void);
140 /* /sys/devices directory */
141 extern struct kset
*devices_kset
;
142 extern void devices_kset_move_last(struct device
*dev
);
144 extern struct device_attribute dev_attr_deferred_probe
;
146 #if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
147 extern void module_add_driver(struct module
*mod
, struct device_driver
*drv
);
148 extern void module_remove_driver(struct device_driver
*drv
);
150 static inline void module_add_driver(struct module
*mod
,
151 struct device_driver
*drv
) { }
152 static inline void module_remove_driver(struct device_driver
*drv
) { }
155 #ifdef CONFIG_DEVTMPFS
156 extern int devtmpfs_init(void);
158 static inline int devtmpfs_init(void) { return 0; }
161 /* Device links support */
162 extern int device_links_read_lock(void);
163 extern void device_links_read_unlock(int idx
);
164 extern int device_links_check_suppliers(struct device
*dev
);
165 extern void device_links_driver_bound(struct device
*dev
);
166 extern void device_links_driver_cleanup(struct device
*dev
);
167 extern void device_links_no_driver(struct device
*dev
);
168 extern bool device_links_busy(struct device
*dev
);
169 extern void device_links_unbind_consumers(struct device
*dev
);