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 /**
   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  */
  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];
  28 };
  29
  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
  41  */
  42 struct ccwgroup_driver {
  43         struct module *owner;
  44         char *name;
  45         int max_slaves;
  46         unsigned long driver_id;
  47
  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 *);
  52
  53         struct device_driver driver;
  54 };
  55
  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[]);
  62
  63 extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
  64 extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
  65
  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