Branch data Line data Source code
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 subsystem's 'devices' directory
8 : : * @interfaces - list of subsystem interfaces associated
9 : : * @mutex - protect the devices, and interfaces lists.
10 : : *
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
15 : : * on this bus.
16 : : * @bus - pointer back to the struct bus_type that this structure is associated
17 : : * with.
18 : : *
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
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 : : struct list_head interfaces;
32 : : struct mutex mutex;
33 : :
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;
39 : : struct bus_type *bus;
40 : :
41 : : struct kset glue_dirs;
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 : : * @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
65 : : * probed first.
66 : : * @driver_data - private pointer for driver specific info. Will turn into a
67 : : * list soon.
68 : : * @device - pointer back to the struct class that this structure is
69 : : * associated with.
70 : : *
71 : : * Nothing outside of the driver core should ever touch these fields.
72 : : */
73 : : struct device_private {
74 : : struct klist klist_children;
75 : : struct klist_node knode_parent;
76 : : struct klist_node knode_driver;
77 : : struct klist_node knode_bus;
78 : : struct list_head deferred_probe;
79 : : void *driver_data;
80 : : struct device *device;
81 : : };
82 : : #define to_device_private_parent(obj) \
83 : : container_of(obj, struct device_private, knode_parent)
84 : : #define to_device_private_driver(obj) \
85 : : container_of(obj, struct device_private, knode_driver)
86 : : #define to_device_private_bus(obj) \
87 : : container_of(obj, struct device_private, knode_bus)
88 : :
89 : : extern int device_private_init(struct device *dev);
90 : :
91 : : /* initialisation functions */
92 : : extern int devices_init(void);
93 : : extern int buses_init(void);
94 : : extern int classes_init(void);
95 : : extern int firmware_init(void);
96 : : #ifdef CONFIG_SYS_HYPERVISOR
97 : : extern int hypervisor_init(void);
98 : : #else
99 : : static inline int hypervisor_init(void) { return 0; }
100 : : #endif
101 : : extern int platform_bus_init(void);
102 : : extern void cpu_dev_init(void);
103 : :
104 : : struct kobject *virtual_device_parent(struct device *dev);
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 : : extern void driver_deferred_probe_del(struct device *dev);
116 : : static inline int driver_match_device(struct device_driver *drv,
117 : : struct device *dev)
118 : : {
119 [ # # ][ # # ]: 0 : return drv->bus->match ? drv->bus->match(dev, drv) : 1;
120 : : }
121 : :
122 : : extern int driver_add_groups(struct device_driver *drv,
123 : : const struct attribute_group **groups);
124 : : extern void driver_remove_groups(struct device_driver *drv,
125 : : const struct attribute_group **groups);
126 : :
127 : : extern int device_add_groups(struct device *dev,
128 : : const struct attribute_group **groups);
129 : : extern void device_remove_groups(struct device *dev,
130 : : const struct attribute_group **groups);
131 : :
132 : : extern char *make_class_name(const char *name, struct kobject *kobj);
133 : :
134 : : extern int devres_release_all(struct device *dev);
135 : :
136 : : /* /sys/devices directory */
137 : : extern struct kset *devices_kset;
138 : :
139 : : #if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
140 : : extern void module_add_driver(struct module *mod, struct device_driver *drv);
141 : : extern void module_remove_driver(struct device_driver *drv);
142 : : #else
143 : : static inline void module_add_driver(struct module *mod,
144 : : struct device_driver *drv) { }
145 : : static inline void module_remove_driver(struct device_driver *drv) { }
146 : : #endif
147 : :
148 : : #ifdef CONFIG_DEVTMPFS
149 : : extern int devtmpfs_init(void);
150 : : #else
151 : : static inline int devtmpfs_init(void) { return 0; }
152 : : #endif
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