drivers/base/base.h

   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  * @subsys - the struct kset that defines this class.  This is the main kobject
  44  * @children - list of class_devices associated with this class
  45  * @class_devices - list of devices associated with this class
  46  * @interfaces - list of class_interfaces associated with this class
  47  * @class_dirs -
  48  * @sem - semaphore to protect the children, devices, and interfaces lists.
  49  * @class - pointer back to the struct class that this structure is associated
  50  * with.
  51  *
  52  * This structure is the one that is the actual kobject allowing struct
  53  * class to be statically allocated safely.  Nothing outside of the driver
  54  * core should ever touch these fields.
  55  */
  56 struct class_private {
  57         struct kset subsys;
  58         struct list_head class_devices;
  59         struct list_head interfaces;
  60         struct kset class_dirs;
  61         struct semaphore sem;
  62         struct class *class;
  63 };
  64 #define to_class(obj) container_of(obj, struct class_private, subsys.kobj)
  65
  66 /* initialisation functions */
  67 extern int devices_init(void);
  68 extern int buses_init(void);
  69 extern int classes_init(void);
  70 extern int firmware_init(void);
  71 #ifdef CONFIG_SYS_HYPERVISOR
  72 extern int hypervisor_init(void);
  73 #else
  74 static inline int hypervisor_init(void) { return 0; }
  75 #endif
  76 extern int platform_bus_init(void);
  77 extern int system_bus_init(void);
  78 extern int cpu_dev_init(void);
  79
  80 extern int bus_add_device(struct device *dev);
  81 extern void bus_attach_device(struct device *dev);
  82 extern void bus_remove_device(struct device *dev);
  83
  84 extern int bus_add_driver(struct device_driver *drv);
  85 extern void bus_remove_driver(struct device_driver *drv);
  86
  87 extern void driver_detach(struct device_driver *drv);
  88 extern int driver_probe_device(struct device_driver *drv, struct device *dev);
  89
  90 extern void sysdev_shutdown(void);
  91 extern int sysdev_suspend(pm_message_t state);
  92 extern int sysdev_resume(void);
  93
  94 extern char *make_class_name(const char *name, struct kobject *kobj);
  95
  96 extern int devres_release_all(struct device *dev);
  97
  98 extern struct kset *devices_kset;
  99
 100 #if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
 101 extern void module_add_driver(struct module *mod, struct device_driver *drv);
 102 extern void module_remove_driver(struct device_driver *drv);
 103 #else
 104 static inline void module_add_driver(struct module *mod,
 105                                      struct device_driver *drv) { }
 106 static inline void module_remove_driver(struct device_driver *drv) { }
 107 #endif