Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1
2/**
3 * struct subsys_private - structure to hold the private to the driver core portions of the bus_type/class structure.
4 *
5 * @subsys - the struct kset that defines this subsystem
6 * @devices_kset - the list of devices associated
7 *
8 * @drivers_kset - the list of drivers associated
9 * @klist_devices - the klist to iterate over the @devices_kset
10 * @klist_drivers - the klist to iterate over the @drivers_kset
11 * @bus_notifier - the bus notifier list for anything that cares about things
12 * on this bus.
13 * @bus - pointer back to the struct bus_type that this structure is associated
14 * with.
15 *
16 * @class_interfaces - list of class_interfaces associated
17 * @glue_dirs - "glue" directory to put in-between the parent device to
18 * avoid namespace conflicts
19 * @class_mutex - mutex to protect the children, devices, and interfaces lists.
20 * @class - pointer back to the struct class that this structure is associated
21 * with.
22 *
23 * This structure is the one that is the actual kobject allowing struct
24 * bus_type/class to be statically allocated safely. Nothing outside of the
25 * driver core should ever touch these fields.
26 */
27struct subsys_private {
28 struct kset subsys;
29 struct kset *devices_kset;
30
31 struct kset *drivers_kset;
32 struct klist klist_devices;
33 struct klist klist_drivers;
34 struct blocking_notifier_head bus_notifier;
35 unsigned int drivers_autoprobe:1;
36 struct bus_type *bus;
37
38 struct list_head class_interfaces;
39 struct kset glue_dirs;
40 struct mutex class_mutex;
41 struct class *class;
42};
43#define to_subsys_private(obj) container_of(obj, struct subsys_private, subsys.kobj)
44
45struct driver_private {
46 struct kobject kobj;
47 struct klist klist_devices;
48 struct klist_node knode_bus;
49 struct module_kobject *mkobj;
50 struct device_driver *driver;
51};
52#define to_driver(obj) container_of(obj, struct driver_private, kobj)
53
54/**
55 * struct device_private - structure to hold the private to the driver core portions of the device structure.
56 *
57 * @klist_children - klist containing all children of this device
58 * @knode_parent - node in sibling list
59 * @knode_driver - node in driver list
60 * @knode_bus - node in bus list
61 * @driver_data - private pointer for driver specific info. Will turn into a
62 * list soon.
63 * @device - pointer back to the struct class that this structure is
64 * associated with.
65 *
66 * Nothing outside of the driver core should ever touch these fields.
67 */
68struct device_private {
69 struct klist klist_children;
70 struct klist_node knode_parent;
71 struct klist_node knode_driver;
72 struct klist_node knode_bus;
73 void *driver_data;
74 struct device *device;
75};
76#define to_device_private_parent(obj) \
77 container_of(obj, struct device_private, knode_parent)
78#define to_device_private_driver(obj) \
79 container_of(obj, struct device_private, knode_driver)
80#define to_device_private_bus(obj) \
81 container_of(obj, struct device_private, knode_bus)
82
83extern int device_private_init(struct device *dev);
84
85/* initialisation functions */
86extern int devices_init(void);
87extern int buses_init(void);
88extern int classes_init(void);
89extern int firmware_init(void);
90#ifdef CONFIG_SYS_HYPERVISOR
91extern int hypervisor_init(void);
92#else
93static inline int hypervisor_init(void) { return 0; }
94#endif
95extern int platform_bus_init(void);
96extern int system_bus_init(void);
97extern int cpu_dev_init(void);
98
99extern int bus_add_device(struct device *dev);
100extern void bus_probe_device(struct device *dev);
101extern void bus_remove_device(struct device *dev);
102
103extern int bus_add_driver(struct device_driver *drv);
104extern void bus_remove_driver(struct device_driver *drv);
105
106extern void driver_detach(struct device_driver *drv);
107extern int driver_probe_device(struct device_driver *drv, struct device *dev);
108static inline int driver_match_device(struct device_driver *drv,
109 struct device *dev)
110{
111 return drv->bus->match ? drv->bus->match(dev, drv) : 1;
112}
113
114extern char *make_class_name(const char *name, struct kobject *kobj);
115
116extern int devres_release_all(struct device *dev);
117
118extern struct kset *devices_kset;
119
120#if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
121extern void module_add_driver(struct module *mod, struct device_driver *drv);
122extern void module_remove_driver(struct device_driver *drv);
123#else
124static inline void module_add_driver(struct module *mod,
125 struct device_driver *drv) { }
126static inline void module_remove_driver(struct device_driver *drv) { }
127#endif
128
129#ifdef CONFIG_DEVTMPFS
130extern int devtmpfs_init(void);
131#else
132static inline int devtmpfs_init(void) { return 0; }
133#endif