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[linux-2.6] / include / asm-s390 / ccwgroup.h
1 #ifndef S390_CCWGROUP_H
2 #define S390_CCWGROUP_H
3
4 struct ccw_device;
5 struct ccw_driver;
6
7 struct ccwgroup_device {
8         unsigned long creator_id;       /* unique number of the driver */
9         enum {
10                 CCWGROUP_OFFLINE,
11                 CCWGROUP_ONLINE,
12         } state;
13         atomic_t onoff;
14         struct mutex reg_mutex;
15         unsigned int count;             /* number of attached slave devices */
16         struct device   dev;            /* master device                    */
17         struct ccw_device *cdev[0];     /* variable number, allocate as needed */
18 };
19
20 struct ccwgroup_driver {
21         struct module *owner;
22         char *name;
23         int max_slaves;
24         unsigned long driver_id;
25
26         int (*probe) (struct ccwgroup_device *);
27         void (*remove) (struct ccwgroup_device *);
28         int (*set_online) (struct ccwgroup_device *);
29         int (*set_offline) (struct ccwgroup_device *);
30
31         struct device_driver driver;            /* this driver */
32 };
33
34 extern int  ccwgroup_driver_register   (struct ccwgroup_driver *cdriver);
35 extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
36 extern int ccwgroup_create (struct device *root,
37                             unsigned int creator_id,
38                             struct ccw_driver *gdrv,
39                             int argc, char *argv[]);
40
41 extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
42 extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
43
44 #define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
45 #define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)
46 #endif