1 #ifndef S390_CCWGROUP_H 2 #define S390_CCWGROUP_H 3 4 struct ccw_device; 5 struct ccw_driver; 6 7 /** 8 * struct ccwgroup_device - ccw group device 9 * @creator_id: unique number of the driver 10 * @state: online/offline state 11 * @count: number of attached slave devices 12 * @dev: embedded device structure 13 * @cdev: variable number of slave devices, allocated as needed 14 */ 15 struct ccwgroup_device { 16 unsigned long creator_id; 17 enum { 18 CCWGROUP_OFFLINE, 19 CCWGROUP_ONLINE, 20 } state; 21 /* private: */ 22 atomic_t onoff; 23 struct mutex reg_mutex; 24 /* public: */ 25 unsigned int count; 26 struct device dev; 27 struct ccw_device *cdev[0]; 28 }; 29 30 /** 31 * struct ccwgroup_driver - driver for ccw group devices 32 * @setup: function called during device creation to setup the device 33 * @remove: function called on remove 34 * @set_online: function called when device is set online 35 * @set_offline: function called when device is set offline 36 * @shutdown: function called when device is shut down 37 * @prepare: prepare for pm state transition 38 * @complete: undo work done in @prepare 39 * @freeze: callback for freezing during hibernation snapshotting 40 * @thaw: undo work done in @freeze 41 * @restore: callback for restoring after hibernation 42 * @driver: embedded driver structure 43 */ 44 struct ccwgroup_driver { 45 int (*setup) (struct ccwgroup_device *); 46 void (*remove) (struct ccwgroup_device *); 47 int (*set_online) (struct ccwgroup_device *); 48 int (*set_offline) (struct ccwgroup_device *); 49 void (*shutdown)(struct ccwgroup_device *); 50 int (*prepare) (struct ccwgroup_device *); 51 void (*complete) (struct ccwgroup_device *); 52 int (*freeze)(struct ccwgroup_device *); 53 int (*thaw) (struct ccwgroup_device *); 54 int (*restore)(struct ccwgroup_device *); 55 56 struct device_driver driver; 57 }; 58 59 extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver); 60 extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver); 61 int ccwgroup_create_dev(struct device *root, struct ccwgroup_driver *gdrv, 62 int num_devices, const char *buf); 63 64 extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev); 65 extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev); 66 67 #define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev) 68 #define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver) 69 #endif 70