ccwgroup.h

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#ifndef S390_CCWGROUP_H
#define S390_CCWGROUP_H

struct ccw_device;
struct ccw_driver;

struct ccwgroup_device {
    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 {
    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