aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-s390/ccwgroup.h
blob: 925b3ddfa1411419a39316a0053a786826cf4260 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
#ifndef S390_CCWGROUP_H
#define S390_CCWGROUP_H

struct ccw_device;
struct ccw_driver;

struct ccwgroup_device {
	unsigned long creator_id;	/* unique number of the driver */
	enum {
		CCWGROUP_OFFLINE,
		CCWGROUP_ONLINE,
	} state;
	atomic_t onoff;
	struct mutex reg_mutex;
	unsigned int count;		/* number of attached slave devices */
	struct device	dev;		/* master device		    */
	struct ccw_device *cdev[0];	/* variable number, allocate as needed */
};

struct ccwgroup_driver {
	struct module *owner;
	char *name;
	int max_slaves;
	unsigned long driver_id;

	int (*probe) (struct ccwgroup_device *);
	void (*remove) (struct ccwgroup_device *);
	int (*set_online) (struct ccwgroup_device *);
	int (*set_offline) (struct ccwgroup_device *);

	struct device_driver driver;		/* this driver */
};

extern int  ccwgroup_driver_register   (struct ccwgroup_driver *cdriver);
extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
extern int ccwgroup_create (struct device *root,
			    unsigned int creator_id,
			    struct ccw_driver *gdrv,
			    int argc, char *argv[]);

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