drivers/s390/scsi/zfcp_ext.h

   1 /*
   2  *
   3  * linux/drivers/s390/scsi/zfcp_ext.h
   4  *
   5  * FCP adapter driver for IBM eServer zSeries
   6  *
   7  * (C) Copyright IBM Corp. 2002, 2004
   8  *
   9  * Author(s): Martin Peschke <mpeschke@de.ibm.com>
  10  *            Raimund Schroeder <raimund.schroeder@de.ibm.com>
  11  *            Aron Zeh
  12  *            Wolfgang Taphorn
  13  *            Stefan Bader <stefan.bader@de.ibm.com>
  14  *            Heiko Carstens <heiko.carstens@de.ibm.com>
  15  *            Andreas Herrmann <aherrman@de.ibm.com>
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2, or (at your option)
  20  * any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  30  */
  31
  32 #ifndef ZFCP_EXT_H
  33 #define ZFCP_EXT_H
  34
  35 #define ZFCP_EXT_REVISION "$Revision: 1.62 $"
  36
  37 #include "zfcp_def.h"
  38
  39 extern struct zfcp_data zfcp_data;
  40
  41 /******************************** SYSFS  *************************************/
  42 extern int  zfcp_sysfs_driver_create_files(struct device_driver *);
  43 extern void zfcp_sysfs_driver_remove_files(struct device_driver *);
  44 extern int  zfcp_sysfs_adapter_create_files(struct device *);
  45 extern void zfcp_sysfs_adapter_remove_files(struct device *);
  46 extern int  zfcp_sysfs_port_create_files(struct device *, u32);
  47 extern void zfcp_sysfs_port_remove_files(struct device *, u32);
  48 extern int  zfcp_sysfs_unit_create_files(struct device *);
  49 extern void zfcp_sysfs_unit_remove_files(struct device *);
  50 extern void zfcp_sysfs_port_release(struct device *);
  51 extern void zfcp_sysfs_unit_release(struct device *);
  52
  53 /**************************** CONFIGURATION  *********************************/
  54 extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, fcp_lun_t);
  55 extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, wwn_t);
  56 extern struct zfcp_port *zfcp_get_port_by_did(struct zfcp_adapter *, u32);
  57 struct zfcp_adapter *zfcp_get_adapter_by_busid(char *);
  58 extern struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *);
  59 extern int    zfcp_adapter_debug_register(struct zfcp_adapter *);
  60 extern void   zfcp_adapter_dequeue(struct zfcp_adapter *);
  61 extern void   zfcp_adapter_debug_unregister(struct zfcp_adapter *);
  62 extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, wwn_t,
  63                                            u32, u32);
  64 extern void   zfcp_port_dequeue(struct zfcp_port *);
  65 extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, fcp_lun_t);
  66 extern void   zfcp_unit_dequeue(struct zfcp_unit *);
  67
  68 /******************************* S/390 IO ************************************/
  69 extern int  zfcp_ccw_register(void);
  70 extern void zfcp_ccw_unregister(void);
  71
  72 extern void zfcp_qdio_zero_sbals(struct qdio_buffer **, int, int);
  73 extern int  zfcp_qdio_allocate(struct zfcp_adapter *);
  74 extern int  zfcp_qdio_allocate_queues(struct zfcp_adapter *);
  75 extern void zfcp_qdio_free_queues(struct zfcp_adapter *);
  76 extern int  zfcp_qdio_determine_pci(struct zfcp_qdio_queue *,
  77                                     struct zfcp_fsf_req *);
  78 extern int  zfcp_qdio_reqid_check(struct zfcp_adapter *, void *);
  79
  80 extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_req
  81         (struct zfcp_fsf_req *, int, int);
  82 extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_curr
  83         (struct zfcp_fsf_req *);
  84 extern int zfcp_qdio_sbals_from_sg
  85         (struct zfcp_fsf_req *, unsigned long, struct scatterlist *, int, int);
  86 extern int zfcp_qdio_sbals_from_scsicmnd
  87         (struct zfcp_fsf_req *, unsigned long, struct scsi_cmnd *);
  88
  89
  90 /******************************** FSF ****************************************/
  91 extern int  zfcp_fsf_open_port(struct zfcp_erp_action *);
  92 extern int  zfcp_fsf_close_port(struct zfcp_erp_action *);
  93 extern int  zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
  94
  95 extern int  zfcp_fsf_open_unit(struct zfcp_erp_action *);
  96 extern int  zfcp_fsf_close_unit(struct zfcp_erp_action *);
  97
  98 extern int  zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
  99 extern int  zfcp_fsf_exchange_port_data(struct zfcp_adapter *,
 100                                         struct fsf_qtcb_bottom_port *);
 101 extern int  zfcp_fsf_control_file(struct zfcp_adapter *, struct zfcp_fsf_req **,
 102                                   u32, u32, struct zfcp_sg_list *);
 103 extern void zfcp_fsf_request_timeout_handler(unsigned long);
 104 extern void zfcp_fsf_scsi_er_timeout_handler(unsigned long);
 105 extern int  zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
 106 extern int  zfcp_fsf_status_read(struct zfcp_adapter *, int);
 107 extern int zfcp_fsf_req_create(struct zfcp_adapter *, u32, int, mempool_t *,
 108                                unsigned long *, struct zfcp_fsf_req **);
 109 extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *,
 110                             struct zfcp_erp_action *);
 111 extern int zfcp_fsf_send_els(struct zfcp_send_els *);
 112 extern int  zfcp_fsf_req_wait_and_cleanup(struct zfcp_fsf_req *, int, u32 *);
 113 extern int  zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *,
 114                                            struct zfcp_unit *,
 115                                            struct scsi_cmnd *,
 116                                            struct timer_list*, int);
 117 extern int  zfcp_fsf_req_complete(struct zfcp_fsf_req *);
 118 extern void zfcp_fsf_incoming_els(struct zfcp_fsf_req *);
 119 extern void zfcp_fsf_req_cleanup(struct zfcp_fsf_req *);
 120 extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_command_task_management(
 121         struct zfcp_adapter *, struct zfcp_unit *, u8, int);
 122 extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(
 123         unsigned long, struct zfcp_adapter *, struct zfcp_unit *, int);
 124
 125 /******************************* FC/FCP **************************************/
 126 extern int  zfcp_nameserver_enqueue(struct zfcp_adapter *);
 127 extern int  zfcp_ns_gid_pn_request(struct zfcp_erp_action *);
 128 extern int  zfcp_check_ct_response(struct ct_hdr *);
 129 extern int  zfcp_handle_els_rjt(u32, struct zfcp_ls_rjt_par *);
 130
 131 /******************************* SCSI ****************************************/
 132 extern int  zfcp_adapter_scsi_register(struct zfcp_adapter *);
 133 extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
 134 extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t);
 135 extern char *zfcp_get_fcp_rsp_info_ptr(struct fcp_rsp_iu *);
 136 extern void set_host_byte(u32 *, char);
 137 extern void set_driver_byte(u32 *, char);
 138 extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
 139 extern void zfcp_fsf_start_scsi_er_timer(struct zfcp_adapter *);
 140 extern fcp_dl_t zfcp_get_fcp_dl(struct fcp_cmnd_iu *);
 141
 142 extern int zfcp_scsi_command_async(struct zfcp_adapter *,struct zfcp_unit *,
 143                                    struct scsi_cmnd *, struct timer_list *);
 144 extern int zfcp_scsi_command_sync(struct zfcp_unit *, struct scsi_cmnd *,
 145                                   struct timer_list *);
 146 extern struct scsi_transport_template *zfcp_transport_template;
 147 extern struct fc_function_template zfcp_transport_functions;
 148
 149 /******************************** ERP ****************************************/
 150 extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, u32, int);
 151 extern int  zfcp_erp_adapter_reopen(struct zfcp_adapter *, int);
 152 extern int  zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int);
 153 extern void zfcp_erp_adapter_failed(struct zfcp_adapter *);
 154
 155 extern void zfcp_erp_modify_port_status(struct zfcp_port *, u32, int);
 156 extern int  zfcp_erp_port_reopen(struct zfcp_port *, int);
 157 extern int  zfcp_erp_port_shutdown(struct zfcp_port *, int);
 158 extern int  zfcp_erp_port_forced_reopen(struct zfcp_port *, int);
 159 extern void zfcp_erp_port_failed(struct zfcp_port *);
 160 extern int  zfcp_erp_port_reopen_all(struct zfcp_adapter *, int);
 161
 162 extern void zfcp_erp_modify_unit_status(struct zfcp_unit *, u32, int);
 163 extern int  zfcp_erp_unit_reopen(struct zfcp_unit *, int);
 164 extern int  zfcp_erp_unit_shutdown(struct zfcp_unit *, int);
 165 extern void zfcp_erp_unit_failed(struct zfcp_unit *);
 166
 167 extern int  zfcp_erp_thread_setup(struct zfcp_adapter *);
 168 extern int  zfcp_erp_thread_kill(struct zfcp_adapter *);
 169 extern int  zfcp_erp_wait(struct zfcp_adapter *);
 170 extern int  zfcp_erp_async_handler(struct zfcp_erp_action *, unsigned long);
 171
 172 extern int  zfcp_test_link(struct zfcp_port *);
 173
 174 extern void zfcp_erp_port_access_denied(struct zfcp_port *);
 175 extern void zfcp_erp_unit_access_denied(struct zfcp_unit *);
 176 extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *);
 177 extern void zfcp_erp_port_access_changed(struct zfcp_port *);
 178 extern void zfcp_erp_unit_access_changed(struct zfcp_unit *);
 179
 180 /******************************** AUX ****************************************/
 181 extern void zfcp_cmd_dbf_event_fsf(const char *, struct zfcp_fsf_req *,
 182                                    void *, int);
 183 extern void zfcp_cmd_dbf_event_scsi(const char *, struct scsi_cmnd *);
 184 extern void zfcp_in_els_dbf_event(struct zfcp_adapter *, const char *,
 185                                   struct fsf_status_read_buffer *, int);
 186 #endif  /* ZFCP_EXT_H */