s390/scsi/zfcp_ext.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * zfcp device driver
0004  *
0005  * External function declarations.
0006  *
0007  * Copyright IBM Corp. 2002, 2020
0008  */
0009
0010 #ifndef ZFCP_EXT_H
0011 #define ZFCP_EXT_H
0012
0013 #include <linux/types.h>
0014 #include <linux/sysfs.h>
0015 #include <scsi/fc/fc_els.h>
0016 #include "zfcp_def.h"
0017 #include "zfcp_fc.h"
0018
0019 /* zfcp_aux.c */
0020 extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, u64);
0021 extern struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *);
0022 extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, u64, u32,
0023                        u32);
0024 extern void zfcp_adapter_release(struct kref *);
0025 extern void zfcp_adapter_unregister(struct zfcp_adapter *);
0026
0027 /* zfcp_ccw.c */
0028 extern struct ccw_driver zfcp_ccw_driver;
0029 extern struct zfcp_adapter *zfcp_ccw_adapter_by_cdev(struct ccw_device *);
0030 extern void zfcp_ccw_adapter_put(struct zfcp_adapter *);
0031
0032 /* zfcp_dbf.c */
0033 extern int zfcp_dbf_adapter_register(struct zfcp_adapter *);
0034 extern void zfcp_dbf_adapter_unregister(struct zfcp_adapter *);
0035 extern void zfcp_dbf_rec_trig(char *, struct zfcp_adapter *,
0036                   struct zfcp_port *, struct scsi_device *, u8, u8);
0037 extern void zfcp_dbf_rec_trig_lock(char *tag, struct zfcp_adapter *adapter,
0038                    struct zfcp_port *port,
0039                    struct scsi_device *sdev, u8 want, u8 need);
0040 extern void zfcp_dbf_rec_run(char *, struct zfcp_erp_action *);
0041 extern void zfcp_dbf_rec_run_lvl(int level, char *tag,
0042                  struct zfcp_erp_action *erp);
0043 extern void zfcp_dbf_rec_run_wka(char *, struct zfcp_fc_wka_port *, u64);
0044 extern void zfcp_dbf_hba_fsf_uss(char *, struct zfcp_fsf_req *);
0045 extern void zfcp_dbf_hba_fsf_res(char *, int, struct zfcp_fsf_req *);
0046 extern void zfcp_dbf_hba_fsf_fces(char *tag, const struct zfcp_fsf_req *req,
0047                   u64 wwpn, u32 fc_security_old,
0048                   u32 fc_security_new);
0049 extern void zfcp_dbf_hba_bit_err(char *, struct zfcp_fsf_req *);
0050 extern void zfcp_dbf_hba_def_err(struct zfcp_adapter *, u64, u16, void **);
0051 extern void zfcp_dbf_san_req(char *, struct zfcp_fsf_req *, u32);
0052 extern void zfcp_dbf_san_res(char *, struct zfcp_fsf_req *);
0053 extern void zfcp_dbf_san_in_els(char *, struct zfcp_fsf_req *);
0054 extern void zfcp_dbf_scsi_common(char *tag, int level, struct scsi_device *sdev,
0055                  struct scsi_cmnd *sc,
0056                  struct zfcp_fsf_req *fsf);
0057 extern void zfcp_dbf_scsi_eh(char *tag, struct zfcp_adapter *adapter,
0058                  unsigned int scsi_id, int ret);
0059
0060 /* zfcp_erp.c */
0061 extern void zfcp_erp_set_adapter_status(struct zfcp_adapter *, u32);
0062 extern void zfcp_erp_clear_adapter_status(struct zfcp_adapter *, u32);
0063 extern void zfcp_erp_port_forced_no_port_dbf(char *dbftag,
0064                          struct zfcp_adapter *adapter,
0065                          u64 port_name, u32 port_id);
0066 extern void zfcp_erp_adapter_reopen(struct zfcp_adapter *, int, char *);
0067 extern void zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int, char *);
0068 extern void zfcp_erp_set_port_status(struct zfcp_port *, u32);
0069 extern void zfcp_erp_clear_port_status(struct zfcp_port *, u32);
0070 extern void zfcp_erp_port_reopen(struct zfcp_port *port, int clear,
0071                  char *dbftag);
0072 extern void zfcp_erp_port_shutdown(struct zfcp_port *, int, char *);
0073 extern void zfcp_erp_port_forced_reopen(struct zfcp_port *, int, char *);
0074 extern void zfcp_erp_port_forced_reopen_all(struct zfcp_adapter *adapter,
0075                         int clear, char *dbftag);
0076 extern void zfcp_erp_set_lun_status(struct scsi_device *, u32);
0077 extern void zfcp_erp_clear_lun_status(struct scsi_device *, u32);
0078 extern void zfcp_erp_lun_reopen(struct scsi_device *, int, char *);
0079 extern void zfcp_erp_lun_shutdown(struct scsi_device *, int, char *);
0080 extern void zfcp_erp_lun_shutdown_wait(struct scsi_device *, char *);
0081 extern int  zfcp_erp_thread_setup(struct zfcp_adapter *);
0082 extern void zfcp_erp_thread_kill(struct zfcp_adapter *);
0083 extern void zfcp_erp_wait(struct zfcp_adapter *);
0084 extern void zfcp_erp_notify(struct zfcp_erp_action *, unsigned long);
0085 extern void zfcp_erp_timeout_handler(struct timer_list *t);
0086 extern void zfcp_erp_adapter_reset_sync(struct zfcp_adapter *adapter,
0087                     char *dbftag);
0088
0089 /* zfcp_fc.c */
0090 extern struct kmem_cache *zfcp_fc_req_cache;
0091 extern void zfcp_fc_enqueue_event(struct zfcp_adapter *,
0092                 enum fc_host_event_code event_code, u32);
0093 extern void zfcp_fc_post_event(struct work_struct *);
0094 extern void zfcp_fc_scan_ports(struct work_struct *);
0095 extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *);
0096 extern void zfcp_fc_port_did_lookup(struct work_struct *);
0097 extern void zfcp_fc_trigger_did_lookup(struct zfcp_port *);
0098 extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fc_els_flogi *);
0099 extern void zfcp_fc_test_link(struct zfcp_port *);
0100 extern void zfcp_fc_link_test_work(struct work_struct *);
0101 extern void zfcp_fc_wka_ports_force_offline(struct zfcp_fc_wka_ports *);
0102 extern int zfcp_fc_gs_setup(struct zfcp_adapter *);
0103 extern void zfcp_fc_gs_destroy(struct zfcp_adapter *);
0104 extern int zfcp_fc_exec_bsg_job(struct bsg_job *);
0105 extern int zfcp_fc_timeout_bsg_job(struct bsg_job *);
0106 extern void zfcp_fc_sym_name_update(struct work_struct *);
0107 extern unsigned int zfcp_fc_port_scan_backoff(void);
0108 extern void zfcp_fc_conditional_port_scan(struct zfcp_adapter *);
0109 extern void zfcp_fc_inverse_conditional_port_scan(struct zfcp_adapter *);
0110
0111 /* zfcp_fsf.c */
0112 extern struct kmem_cache *zfcp_fsf_qtcb_cache;
0113 extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
0114 extern int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *);
0115 extern int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *);
0116 extern int zfcp_fsf_close_port(struct zfcp_erp_action *);
0117 extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
0118 extern int zfcp_fsf_open_lun(struct zfcp_erp_action *);
0119 extern int zfcp_fsf_close_lun(struct zfcp_erp_action *);
0120 extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
0121 extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *,
0122                           struct fsf_qtcb_bottom_config *);
0123 extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *);
0124 extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *,
0125                         struct fsf_qtcb_bottom_port *);
0126 extern u32 zfcp_fsf_convert_portspeed(u32 fsf_speed);
0127 extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
0128 extern int zfcp_fsf_status_read(struct zfcp_qdio *);
0129 extern int zfcp_status_read_refill(struct zfcp_adapter *adapter);
0130 extern int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *, struct zfcp_fsf_ct_els *,
0131                 mempool_t *, unsigned int);
0132 extern int zfcp_fsf_send_els(struct zfcp_adapter *, u32,
0133                  struct zfcp_fsf_ct_els *, unsigned int);
0134 extern int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *);
0135 extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
0136 extern void zfcp_fsf_fc_host_link_down(struct zfcp_adapter *adapter);
0137 extern struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_device *sdev,
0138                            u8 tm_flags);
0139 extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *);
0140 extern void zfcp_fsf_reqid_check(struct zfcp_qdio *, int);
0141 enum zfcp_fsf_print_fmt {
0142     ZFCP_FSF_PRINT_FMT_LIST,
0143     ZFCP_FSF_PRINT_FMT_SINGLEITEM,
0144 };
0145 extern ssize_t zfcp_fsf_scnprint_fc_security(char *buf, size_t size,
0146                          u32 fc_security,
0147                          enum zfcp_fsf_print_fmt fmt);
0148
0149 /* zfcp_qdio.c */
0150 extern int zfcp_qdio_setup(struct zfcp_adapter *);
0151 extern void zfcp_qdio_destroy(struct zfcp_qdio *);
0152 extern int zfcp_qdio_sbal_get(struct zfcp_qdio *);
0153 extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_qdio_req *);
0154 extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *, struct zfcp_qdio_req *,
0155                    struct scatterlist *);
0156 extern void zfcp_qdio_shost_update(struct zfcp_adapter *const adapter,
0157                    const struct zfcp_qdio *const qdio);
0158 extern int zfcp_qdio_open(struct zfcp_qdio *);
0159 extern void zfcp_qdio_close(struct zfcp_qdio *);
0160 extern void zfcp_qdio_siosl(struct zfcp_adapter *);
0161
0162 /* zfcp_scsi.c */
0163 extern bool zfcp_experimental_dix;
0164 extern struct scsi_transport_template *zfcp_scsi_transport_template;
0165 extern int zfcp_scsi_adapter_register(struct zfcp_adapter *);
0166 extern void zfcp_scsi_adapter_unregister(struct zfcp_adapter *);
0167 extern struct fc_function_template zfcp_transport_functions;
0168 extern void zfcp_scsi_rport_work(struct work_struct *);
0169 extern void zfcp_scsi_schedule_rport_register(struct zfcp_port *);
0170 extern void zfcp_scsi_schedule_rport_block(struct zfcp_port *);
0171 extern void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *);
0172 extern void zfcp_scsi_set_prot(struct zfcp_adapter *);
0173 extern void zfcp_scsi_dif_sense_error(struct scsi_cmnd *, int);
0174 extern void zfcp_scsi_shost_update_config_data(
0175     struct zfcp_adapter *const adapter,
0176     const struct fsf_qtcb_bottom_config *const bottom,
0177     const bool bottom_incomplete);
0178 extern void zfcp_scsi_shost_update_port_data(
0179     struct zfcp_adapter *const adapter,
0180     const struct fsf_qtcb_bottom_port *const bottom);
0181
0182 /* zfcp_sysfs.c */
0183 extern const struct attribute_group *zfcp_sysfs_adapter_attr_groups[];
0184 extern const struct attribute_group *zfcp_unit_attr_groups[];
0185 extern const struct attribute_group *zfcp_port_attr_groups[];
0186 extern struct mutex zfcp_sysfs_port_units_mutex;
0187 extern const struct attribute_group *zfcp_sysfs_sdev_attr_groups[];
0188 extern const struct attribute_group *zfcp_sysfs_shost_attr_groups[];
0189 bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port);
0190
0191 /* zfcp_unit.c */
0192 extern int zfcp_unit_add(struct zfcp_port *, u64);
0193 extern int zfcp_unit_remove(struct zfcp_port *, u64);
0194 extern struct zfcp_unit *zfcp_unit_find(struct zfcp_port *, u64);
0195 extern struct scsi_device *zfcp_unit_sdev(struct zfcp_unit *unit);
0196 extern void zfcp_unit_scsi_scan(struct zfcp_unit *);
0197 extern void zfcp_unit_queue_scsi_scan(struct zfcp_port *);
0198 extern unsigned int zfcp_unit_sdev_status(struct zfcp_unit *);
0199
0200 #endif  /* ZFCP_EXT_H */