1 #ifndef S390_CCWGROUP_H
2 #define S390_CCWGROUP_H
8 * struct ccwgroup_device - ccw group device
9 * @state: online/offline state
10 * @count: number of attached slave devices
11 * @dev: embedded device structure
12 * @cdev: variable number of slave devices, allocated as needed
14 struct ccwgroup_device {
21 struct mutex reg_mutex;
25 struct work_struct ungroup_work;
26 struct ccw_device *cdev[0];
30 * struct ccwgroup_driver - driver for ccw group devices
31 * @setup: function called during device creation to setup the device
32 * @remove: function called on remove
33 * @set_online: function called when device is set online
34 * @set_offline: function called when device is set offline
35 * @shutdown: function called when device is shut down
36 * @prepare: prepare for pm state transition
37 * @complete: undo work done in @prepare
38 * @freeze: callback for freezing during hibernation snapshotting
39 * @thaw: undo work done in @freeze
40 * @restore: callback for restoring after hibernation
41 * @driver: embedded driver structure
43 struct ccwgroup_driver {
44 int (*setup) (struct ccwgroup_device *);
45 void (*remove) (struct ccwgroup_device *);
46 int (*set_online) (struct ccwgroup_device *);
47 int (*set_offline) (struct ccwgroup_device *);
48 void (*shutdown)(struct ccwgroup_device *);
49 int (*prepare) (struct ccwgroup_device *);
50 void (*complete) (struct ccwgroup_device *);
51 int (*freeze)(struct ccwgroup_device *);
52 int (*thaw) (struct ccwgroup_device *);
53 int (*restore)(struct ccwgroup_device *);
55 struct device_driver driver;
58 extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver);
59 extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
60 int ccwgroup_create_dev(struct device *root, struct ccwgroup_driver *gdrv,
61 int num_devices, const char *buf);
63 extern int ccwgroup_set_online(struct ccwgroup_device *gdev);
64 extern int ccwgroup_set_offline(struct ccwgroup_device *gdev);
66 extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
67 extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
69 #define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
70 #define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)