Merge branch 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
[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         unsigned int count;             /* number of attached slave devices */
15         struct device   dev;            /* master device                    */
16         struct ccw_device *cdev[0];     /* variable number, allocate as needed */
17 };
18
19 struct ccwgroup_driver {
20         struct module *owner;
21         char *name;
22         int max_slaves;
23         unsigned long driver_id;
24
25         int (*probe) (struct ccwgroup_device *);
26         void (*remove) (struct ccwgroup_device *);
27         int (*set_online) (struct ccwgroup_device *);
28         int (*set_offline) (struct ccwgroup_device *);
29
30         struct device_driver driver;            /* this driver */
31 };
32
33 extern int  ccwgroup_driver_register   (struct ccwgroup_driver *cdriver);
34 extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
35 extern int ccwgroup_create (struct device *root,
36                             unsigned int creator_id,
37                             struct ccw_driver *gdrv,
38                             int argc, char *argv[]);
39
40 extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
41 extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
42
43 #define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
44 #define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)
45 #endif