LXR linux/drivers/s390/scsi/zfcp

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * zfcp device driver
   4 *
   5 * External function declarations.
   6 *
   7 * Copyright IBM Corp. 2002, 2020
   8 */
   9
  10#ifndef ZFCP_EXT_H
  11#define ZFCP_EXT_H
  12
  13#include <linux/types.h>
  14#include <linux/sysfs.h>
  15#include <scsi/fc/fc_els.h>
  16#include "zfcp_def.h"
  17#include "zfcp_fc.h"
  18
  19/* zfcp_aux.c */
  20extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, u64);
  21extern struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *);
  22extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, u64, u32,
  23                                           u32);
  24extern void zfcp_adapter_release(struct kref *);
  25extern void zfcp_adapter_unregister(struct zfcp_adapter *);
  26
  27/* zfcp_ccw.c */
  28extern struct ccw_driver zfcp_ccw_driver;
  29extern struct zfcp_adapter *zfcp_ccw_adapter_by_cdev(struct ccw_device *);
  30extern void zfcp_ccw_adapter_put(struct zfcp_adapter *);
  31
  32/* zfcp_dbf.c */
  33extern int zfcp_dbf_adapter_register(struct zfcp_adapter *);
  34extern void zfcp_dbf_adapter_unregister(struct zfcp_adapter *);
  35extern void zfcp_dbf_rec_trig(char *, struct zfcp_adapter *,
  36                              struct zfcp_port *, struct scsi_device *, u8, u8);
  37extern void zfcp_dbf_rec_trig_lock(char *tag, struct zfcp_adapter *adapter,
  38                                   struct zfcp_port *port,
  39                                   struct scsi_device *sdev, u8 want, u8 need);
  40extern void zfcp_dbf_rec_run(char *, struct zfcp_erp_action *);
  41extern void zfcp_dbf_rec_run_lvl(int level, char *tag,
  42                                 struct zfcp_erp_action *erp);
  43extern void zfcp_dbf_rec_run_wka(char *, struct zfcp_fc_wka_port *, u64);
  44extern void zfcp_dbf_hba_fsf_uss(char *, struct zfcp_fsf_req *);
  45extern void zfcp_dbf_hba_fsf_res(char *, int, struct zfcp_fsf_req *);
  46extern void zfcp_dbf_hba_fsf_fces(char *tag, const struct zfcp_fsf_req *req,
  47                                  u64 wwpn, u32 fc_security_old,
  48                                  u32 fc_security_new);
  49extern void zfcp_dbf_hba_bit_err(char *, struct zfcp_fsf_req *);
  50extern void zfcp_dbf_hba_def_err(struct zfcp_adapter *, u64, u16, void **);
  51extern void zfcp_dbf_san_req(char *, struct zfcp_fsf_req *, u32);
  52extern void zfcp_dbf_san_res(char *, struct zfcp_fsf_req *);
  53extern void zfcp_dbf_san_in_els(char *, struct zfcp_fsf_req *);
  54extern void zfcp_dbf_scsi_common(char *tag, int level, struct scsi_device *sdev,
  55                                 struct scsi_cmnd *sc,
  56                                 struct zfcp_fsf_req *fsf);
  57extern void zfcp_dbf_scsi_eh(char *tag, struct zfcp_adapter *adapter,
  58                             unsigned int scsi_id, int ret);
  59
  60/* zfcp_erp.c */
  61extern void zfcp_erp_set_adapter_status(struct zfcp_adapter *, u32);
  62extern void zfcp_erp_clear_adapter_status(struct zfcp_adapter *, u32);
  63extern void zfcp_erp_port_forced_no_port_dbf(char *dbftag,
  64                                             struct zfcp_adapter *adapter,
  65                                             u64 port_name, u32 port_id);
  66extern void zfcp_erp_adapter_reopen(struct zfcp_adapter *, int, char *);
  67extern void zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int, char *);
  68extern void zfcp_erp_set_port_status(struct zfcp_port *, u32);
  69extern void zfcp_erp_clear_port_status(struct zfcp_port *, u32);
  70extern void zfcp_erp_port_reopen(struct zfcp_port *port, int clear,
  71                                 char *dbftag);
  72extern void zfcp_erp_port_shutdown(struct zfcp_port *, int, char *);
  73extern void zfcp_erp_port_forced_reopen(struct zfcp_port *, int, char *);
  74extern void zfcp_erp_port_forced_reopen_all(struct zfcp_adapter *adapter,
  75                                            int clear, char *dbftag);
  76extern void zfcp_erp_set_lun_status(struct scsi_device *, u32);
  77extern void zfcp_erp_clear_lun_status(struct scsi_device *, u32);
  78extern void zfcp_erp_lun_reopen(struct scsi_device *, int, char *);
  79extern void zfcp_erp_lun_shutdown(struct scsi_device *, int, char *);
  80extern void zfcp_erp_lun_shutdown_wait(struct scsi_device *, char *);
  81extern int  zfcp_erp_thread_setup(struct zfcp_adapter *);
  82extern void zfcp_erp_thread_kill(struct zfcp_adapter *);
  83extern void zfcp_erp_wait(struct zfcp_adapter *);
  84extern void zfcp_erp_notify(struct zfcp_erp_action *, unsigned long);
  85extern void zfcp_erp_timeout_handler(struct timer_list *t);
  86extern void zfcp_erp_adapter_reset_sync(struct zfcp_adapter *adapter,
  87                                        char *dbftag);
  88
  89/* zfcp_fc.c */
  90extern struct kmem_cache *zfcp_fc_req_cache;
  91extern void zfcp_fc_enqueue_event(struct zfcp_adapter *,
  92                                enum fc_host_event_code event_code, u32);
  93extern void zfcp_fc_post_event(struct work_struct *);
  94extern void zfcp_fc_scan_ports(struct work_struct *);
  95extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *);
  96extern void zfcp_fc_port_did_lookup(struct work_struct *);
  97extern void zfcp_fc_trigger_did_lookup(struct zfcp_port *);
  98extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fc_els_flogi *);
  99extern void zfcp_fc_test_link(struct zfcp_port *);
 100extern void zfcp_fc_link_test_work(struct work_struct *);
 101extern void zfcp_fc_wka_ports_force_offline(struct zfcp_fc_wka_ports *);
 102extern int zfcp_fc_gs_setup(struct zfcp_adapter *);
 103extern void zfcp_fc_gs_destroy(struct zfcp_adapter *);
 104extern int zfcp_fc_exec_bsg_job(struct bsg_job *);
 105extern int zfcp_fc_timeout_bsg_job(struct bsg_job *);
 106extern void zfcp_fc_sym_name_update(struct work_struct *);
 107extern unsigned int zfcp_fc_port_scan_backoff(void);
 108extern void zfcp_fc_conditional_port_scan(struct zfcp_adapter *);
 109extern void zfcp_fc_inverse_conditional_port_scan(struct zfcp_adapter *);
 110
 111/* zfcp_fsf.c */
 112extern struct kmem_cache *zfcp_fsf_qtcb_cache;
 113extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
 114extern int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *);
 115extern int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *);
 116extern int zfcp_fsf_close_port(struct zfcp_erp_action *);
 117extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
 118extern int zfcp_fsf_open_lun(struct zfcp_erp_action *);
 119extern int zfcp_fsf_close_lun(struct zfcp_erp_action *);
 120extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
 121extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *,
 122                                              struct fsf_qtcb_bottom_config *);
 123extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *);
 124extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *,
 125                                            struct fsf_qtcb_bottom_port *);
 126extern u32 zfcp_fsf_convert_portspeed(u32 fsf_speed);
 127extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
 128extern int zfcp_fsf_status_read(struct zfcp_qdio *);
 129extern int zfcp_status_read_refill(struct zfcp_adapter *adapter);
 130extern int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *, struct zfcp_fsf_ct_els *,
 131                            mempool_t *, unsigned int);
 132extern int zfcp_fsf_send_els(struct zfcp_adapter *, u32,
 133                             struct zfcp_fsf_ct_els *, unsigned int);
 134extern int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *);
 135extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
 136extern void zfcp_fsf_fc_host_link_down(struct zfcp_adapter *adapter);
 137extern struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_device *sdev,
 138                                                   u8 tm_flags);
 139extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *);
 140extern void zfcp_fsf_reqid_check(struct zfcp_qdio *, int);
 141enum zfcp_fsf_print_fmt {
 142        ZFCP_FSF_PRINT_FMT_LIST,
 143        ZFCP_FSF_PRINT_FMT_SINGLEITEM,
 144};
 145extern ssize_t zfcp_fsf_scnprint_fc_security(char *buf, size_t size,
 146                                             u32 fc_security,
 147                                             enum zfcp_fsf_print_fmt fmt);
 148
 149/* zfcp_qdio.c */
 150extern int zfcp_qdio_setup(struct zfcp_adapter *);
 151extern void zfcp_qdio_destroy(struct zfcp_qdio *);
 152extern int zfcp_qdio_sbal_get(struct zfcp_qdio *);
 153extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_qdio_req *);
 154extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *, struct zfcp_qdio_req *,
 155                                   struct scatterlist *);
 156extern void zfcp_qdio_shost_update(struct zfcp_adapter *const adapter,
 157                                   const struct zfcp_qdio *const qdio);
 158extern int zfcp_qdio_open(struct zfcp_qdio *);
 159extern void zfcp_qdio_close(struct zfcp_qdio *);
 160extern void zfcp_qdio_siosl(struct zfcp_adapter *);
 161
 162/* zfcp_scsi.c */
 163extern bool zfcp_experimental_dix;
 164extern struct scsi_transport_template *zfcp_scsi_transport_template;
 165extern int zfcp_scsi_adapter_register(struct zfcp_adapter *);
 166extern void zfcp_scsi_adapter_unregister(struct zfcp_adapter *);
 167extern struct fc_function_template zfcp_transport_functions;
 168extern void zfcp_scsi_rport_work(struct work_struct *);
 169extern void zfcp_scsi_schedule_rport_register(struct zfcp_port *);
 170extern void zfcp_scsi_schedule_rport_block(struct zfcp_port *);
 171extern void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *);
 172extern void zfcp_scsi_set_prot(struct zfcp_adapter *);
 173extern void zfcp_scsi_dif_sense_error(struct scsi_cmnd *, int);
 174extern void zfcp_scsi_shost_update_config_data(
 175        struct zfcp_adapter *const adapter,
 176        const struct fsf_qtcb_bottom_config *const bottom,
 177        const bool bottom_incomplete);
 178extern void zfcp_scsi_shost_update_port_data(
 179        struct zfcp_adapter *const adapter,
 180        const struct fsf_qtcb_bottom_port *const bottom);
 181
 182/* zfcp_sysfs.c */
 183extern const struct attribute_group *zfcp_sysfs_adapter_attr_groups[];
 184extern const struct attribute_group *zfcp_unit_attr_groups[];
 185extern const struct attribute_group *zfcp_port_attr_groups[];
 186extern struct mutex zfcp_sysfs_port_units_mutex;
 187extern struct device_attribute *zfcp_sysfs_sdev_attrs[];
 188extern struct device_attribute *zfcp_sysfs_shost_attrs[];
 189bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port);
 190
 191/* zfcp_unit.c */
 192extern int zfcp_unit_add(struct zfcp_port *, u64);
 193extern int zfcp_unit_remove(struct zfcp_port *, u64);
 194extern struct zfcp_unit *zfcp_unit_find(struct zfcp_port *, u64);
 195extern struct scsi_device *zfcp_unit_sdev(struct zfcp_unit *unit);
 196extern void zfcp_unit_scsi_scan(struct zfcp_unit *);
 197extern void zfcp_unit_queue_scsi_scan(struct zfcp_port *);
 198extern unsigned int zfcp_unit_sdev_status(struct zfcp_unit *);
 199
 200#endif  /* ZFCP_EXT_H */
 201