+/*
+ * Perform Subsystem Function - Set Subsystem Characteristics
+ */
+struct dasd_psf_ssc_data {
+ unsigned char order;
+ unsigned char flags;
+ unsigned char cu_type[4];
+ unsigned char suborder;
+ unsigned char reserved[59];
+} __attribute__((packed));
+
+
+/*
+ * some structures and definitions for alias handling
+ */
+struct dasd_unit_address_configuration {
+ struct {
+ char ua_type;
+ char base_ua;
+ } unit[256];
+} __attribute__((packed));
+
+
+#define MAX_DEVICES_PER_LCU 256
+
+/* flags on the LCU */
+#define NEED_UAC_UPDATE 0x01
+#define UPDATE_PENDING 0x02
+
+enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
+
+
+struct alias_root {
+ struct list_head serverlist;
+ spinlock_t lock;
+};
+
+struct alias_server {
+ struct list_head server;
+ struct dasd_uid uid;
+ struct list_head lculist;
+};
+
+struct summary_unit_check_work_data {
+ char reason;
+ struct dasd_device *device;
+ struct work_struct worker;
+};
+
+struct read_uac_work_data {
+ struct dasd_device *device;
+ struct delayed_work dwork;
+};
+
+struct alias_lcu {
+ struct list_head lcu;
+ struct dasd_uid uid;
+ enum pavtype pav;
+ char flags;
+ spinlock_t lock;
+ struct list_head grouplist;
+ struct list_head active_devices;
+ struct list_head inactive_devices;
+ struct dasd_unit_address_configuration *uac;
+ struct summary_unit_check_work_data suc_data;
+ struct read_uac_work_data ruac_data;
+ struct dasd_ccw_req *rsu_cqr;
+};
+
+struct alias_pav_group {
+ struct list_head group;
+ struct dasd_uid uid;
+ struct alias_lcu *lcu;
+ struct list_head baselist;
+ struct list_head aliaslist;
+ struct dasd_device *next;
+};
+
+
+struct dasd_eckd_private {
+ struct dasd_eckd_characteristics rdc_data;
+ struct dasd_eckd_confdata conf_data;
+ struct dasd_eckd_path path_data;
+ struct eckd_count count_area[5];
+ int init_cqr_status;
+ int uses_cdl;
+ struct attrib_data_t attrib; /* e.g. cache operations */
+ struct dasd_rssd_features features;
+
+ /* alias managemnet */
+ struct dasd_uid uid;
+ struct alias_pav_group *pavgroup;
+ struct alias_lcu *lcu;
+ int count;
+};
+
+
+
+int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
+void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
+int dasd_alias_add_device(struct dasd_device *);
+int dasd_alias_remove_device(struct dasd_device *);
+struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
+void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
+void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
+