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- #ifndef S390_CCWGROUP_H
- #define S390_CCWGROUP_H
- struct ccw_device;
- struct ccw_driver;
- /**
- * struct ccwgroup_device - ccw group device
- * @creator_id: unique number of the driver
- * @state: online/offline state
- * @count: number of attached slave devices
- * @dev: embedded device structure
- * @cdev: variable number of slave devices, allocated as needed
- */
- struct ccwgroup_device {
- unsigned long creator_id;
- enum {
- CCWGROUP_OFFLINE,
- CCWGROUP_ONLINE,
- } state;
- /* private: */
- atomic_t onoff;
- struct mutex reg_mutex;
- /* public: */
- unsigned int count;
- struct device dev;
- struct ccw_device *cdev[0];
- };
- /**
- * struct ccwgroup_driver - driver for ccw group devices
- * @setup: function called during device creation to setup the device
- * @remove: function called on remove
- * @set_online: function called when device is set online
- * @set_offline: function called when device is set offline
- * @shutdown: function called when device is shut down
- * @prepare: prepare for pm state transition
- * @complete: undo work done in @prepare
- * @freeze: callback for freezing during hibernation snapshotting
- * @thaw: undo work done in @freeze
- * @restore: callback for restoring after hibernation
- * @driver: embedded driver structure
- */
- struct ccwgroup_driver {
- int (*setup) (struct ccwgroup_device *);
- void (*remove) (struct ccwgroup_device *);
- int (*set_online) (struct ccwgroup_device *);
- int (*set_offline) (struct ccwgroup_device *);
- void (*shutdown)(struct ccwgroup_device *);
- int (*prepare) (struct ccwgroup_device *);
- void (*complete) (struct ccwgroup_device *);
- int (*freeze)(struct ccwgroup_device *);
- int (*thaw) (struct ccwgroup_device *);
- int (*restore)(struct ccwgroup_device *);
- struct device_driver driver;
- };
- extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver);
- extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
- int ccwgroup_create_dev(struct device *root, struct ccwgroup_driver *gdrv,
- int num_devices, const char *buf);
- extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
- extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
- #define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
- #define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)
- #endif
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