a8c7629c62
Commit fb64de1bc3 ("s390/qeth: phase out OSN support") spelled out
why the OSN support in qeth is in a bad shape, and put any remaining
interested parties on notice to speak up before it gets ripped out.
It's 2021 now, so make true on that promise and remove all the
OSN-specific parts from qeth. This also means that we no longer need to
export various parts of the cmd & data path internals to the L2 driver.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef S390_CCWGROUP_H
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#define S390_CCWGROUP_H
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struct ccw_device;
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struct ccw_driver;
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/**
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* struct ccwgroup_device - ccw group device
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* @state: online/offline state
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* @count: number of attached slave devices
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* @dev: embedded device structure
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* @cdev: variable number of slave devices, allocated as needed
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* @ungroup_work: used to ungroup the ccwgroup device
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*/
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struct ccwgroup_device {
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enum {
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CCWGROUP_OFFLINE,
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CCWGROUP_ONLINE,
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} state;
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/* private: */
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atomic_t onoff;
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struct mutex reg_mutex;
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/* public: */
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unsigned int count;
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struct device dev;
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struct work_struct ungroup_work;
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struct ccw_device *cdev[0];
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};
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/**
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* struct ccwgroup_driver - driver for ccw group devices
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* @setup: function called during device creation to setup the device
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* @remove: function called on remove
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* @set_online: function called when device is set online
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* @set_offline: function called when device is set offline
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* @shutdown: function called when device is shut down
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* @driver: embedded driver structure
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* @ccw_driver: supported ccw_driver (optional)
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*/
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struct ccwgroup_driver {
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int (*setup) (struct ccwgroup_device *);
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void (*remove) (struct ccwgroup_device *);
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int (*set_online) (struct ccwgroup_device *);
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int (*set_offline) (struct ccwgroup_device *);
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void (*shutdown)(struct ccwgroup_device *);
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struct device_driver driver;
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struct ccw_driver *ccw_driver;
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};
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extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver);
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extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
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int ccwgroup_create_dev(struct device *root, struct ccwgroup_driver *gdrv,
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int num_devices, const char *buf);
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extern int ccwgroup_set_online(struct ccwgroup_device *gdev);
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extern int ccwgroup_set_offline(struct ccwgroup_device *gdev);
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extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
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extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
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#define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
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#define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)
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#if IS_ENABLED(CONFIG_CCWGROUP)
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bool dev_is_ccwgroup(struct device *dev);
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#else /* CONFIG_CCWGROUP */
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static inline bool dev_is_ccwgroup(struct device *dev)
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{
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return false;
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}
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#endif /* CONFIG_CCWGROUP */
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#endif
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