fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-s390 / ccwgroup.h
blob7109c7cab87ecfe4d57941f24c0d83c46604e719
1 #ifndef S390_CCWGROUP_H
2 #define S390_CCWGROUP_H
4 struct ccw_device;
5 struct ccw_driver;
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
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];
30 /**
31 * struct ccwgroup_driver - driver for ccw group devices
32 * @owner: driver owner
33 * @name: driver name
34 * @max_slaves: maximum number of slave devices
35 * @driver_id: unique id
36 * @probe: function called on probe
37 * @remove: function called on remove
38 * @set_online: function called when device is set online
39 * @set_offline: function called when device is set offline
40 * @driver: embedded driver structure
42 struct ccwgroup_driver {
43 struct module *owner;
44 char *name;
45 int max_slaves;
46 unsigned long driver_id;
48 int (*probe) (struct ccwgroup_device *);
49 void (*remove) (struct ccwgroup_device *);
50 int (*set_online) (struct ccwgroup_device *);
51 int (*set_offline) (struct ccwgroup_device *);
53 struct device_driver driver;
56 extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver);
57 extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
58 extern int ccwgroup_create (struct device *root,
59 unsigned int creator_id,
60 struct ccw_driver *gdrv,
61 int argc, char *argv[]);
63 extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
64 extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
66 #define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
67 #define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)
68 #endif