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