1
2#ifndef S390_CCWGROUP_H
3#define S390_CCWGROUP_H
4
5struct ccw_device;
6struct ccw_driver;
7
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15
16struct ccwgroup_device {
17 enum {
18 CCWGROUP_OFFLINE,
19 CCWGROUP_ONLINE,
20 } state;
21
22 atomic_t onoff;
23 struct mutex reg_mutex;
24
25 unsigned int count;
26 struct device dev;
27 struct work_struct ungroup_work;
28 struct ccw_device *cdev[0];
29};
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39
40
41struct ccwgroup_driver {
42 int (*setup) (struct ccwgroup_device *);
43 void (*remove) (struct ccwgroup_device *);
44 int (*set_online) (struct ccwgroup_device *);
45 int (*set_offline) (struct ccwgroup_device *);
46 void (*shutdown)(struct ccwgroup_device *);
47
48 struct device_driver driver;
49 struct ccw_driver *ccw_driver;
50};
51
52extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver);
53extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
54int ccwgroup_create_dev(struct device *root, struct ccwgroup_driver *gdrv,
55 int num_devices, const char *buf);
56
57extern int ccwgroup_set_online(struct ccwgroup_device *gdev);
58int ccwgroup_set_offline(struct ccwgroup_device *gdev, bool call_gdrv);
59
60extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
61extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
62
63#define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
64#define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)
65
66#if IS_ENABLED(CONFIG_CCWGROUP)
67bool dev_is_ccwgroup(struct device *dev);
68#else
69static inline bool dev_is_ccwgroup(struct device *dev)
70{
71 return false;
72}
73#endif
74
75#endif
76