summaryrefslogtreecommitdiff
path: root/include/asm-s390/ccwgroup.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-s390/ccwgroup.h')
-rw-r--r--include/asm-s390/ccwgroup.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/include/asm-s390/ccwgroup.h b/include/asm-s390/ccwgroup.h
new file mode 100644
index 000000000000..d2f9c0d53a97
--- /dev/null
+++ b/include/asm-s390/ccwgroup.h
@@ -0,0 +1,45 @@
+#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;
+ 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