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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef S390_CCWGROUP_H
2#define S390_CCWGROUP_H
3
4struct ccw_device;
5struct ccw_driver;
6
Cornelia Huckb2ffd8e2007-10-12 16:11:17 +02007/**
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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070015struct ccwgroup_device {
Cornelia Huckb2ffd8e2007-10-12 16:11:17 +020016 unsigned long creator_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 enum {
18 CCWGROUP_OFFLINE,
19 CCWGROUP_ONLINE,
20 } state;
Cornelia Huckb2ffd8e2007-10-12 16:11:17 +020021/* private: */
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 atomic_t onoff;
Cornelia Huckd76123e2007-04-27 16:01:37 +020023 struct mutex reg_mutex;
Cornelia Huckb2ffd8e2007-10-12 16:11:17 +020024/* public: */
25 unsigned int count;
26 struct device dev;
27 struct ccw_device *cdev[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -070028};
29
Cornelia Huckb2ffd8e2007-10-12 16:11:17 +020030/**
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
Cornelia Huck01bc8ad2008-02-05 16:50:36 +010040 * @shutdown: function called when device is shut down
Cornelia Huckb2ffd8e2007-10-12 16:11:17 +020041 * @driver: embedded driver structure
42 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070043struct ccwgroup_driver {
44 struct module *owner;
45 char *name;
46 int max_slaves;
47 unsigned long driver_id;
48
49 int (*probe) (struct ccwgroup_device *);
50 void (*remove) (struct ccwgroup_device *);
51 int (*set_online) (struct ccwgroup_device *);
52 int (*set_offline) (struct ccwgroup_device *);
Cornelia Huck01bc8ad2008-02-05 16:50:36 +010053 void (*shutdown)(struct ccwgroup_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
Cornelia Huckb2ffd8e2007-10-12 16:11:17 +020055 struct device_driver driver;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056};
57
58extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver);
59extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
60extern int ccwgroup_create (struct device *root,
61 unsigned int creator_id,
62 struct ccw_driver *gdrv,
63 int argc, char *argv[]);
64
65extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
66extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
67
68#define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
69#define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)
70#endif