f6c0e7a7b3
Bug fixes for zfcp's erp: - trigger adapter reopen if do_QDIO fails - avoid erp deadlock if registration of scsi target or remote port hang - do not treat as error if exchange port data fails - decrease timeout for target reset and aborts - mark unit failed if slave_destroy is called Additionally some code cleanup was done: - made some functions void when retval is not of interest - shortened initialization of zfcp's host_template - corrected some comments Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
200 lines
9.6 KiB
C
200 lines
9.6 KiB
C
/*
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* This file is part of the zfcp device driver for
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* FCP adapters for IBM System z9 and zSeries.
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*
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* (C) Copyright IBM Corp. 2002, 2006
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef ZFCP_EXT_H
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#define ZFCP_EXT_H
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#include "zfcp_def.h"
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extern struct zfcp_data zfcp_data;
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/******************************** SYSFS *************************************/
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extern int zfcp_sysfs_driver_create_files(struct device_driver *);
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extern void zfcp_sysfs_driver_remove_files(struct device_driver *);
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extern int zfcp_sysfs_adapter_create_files(struct device *);
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extern void zfcp_sysfs_adapter_remove_files(struct device *);
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extern int zfcp_sysfs_port_create_files(struct device *, u32);
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extern void zfcp_sysfs_port_remove_files(struct device *, u32);
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extern int zfcp_sysfs_unit_create_files(struct device *);
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extern void zfcp_sysfs_unit_remove_files(struct device *);
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extern void zfcp_sysfs_port_release(struct device *);
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extern void zfcp_sysfs_unit_release(struct device *);
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/**************************** CONFIGURATION *********************************/
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extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, fcp_lun_t);
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extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, wwn_t);
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extern struct zfcp_port *zfcp_get_port_by_did(struct zfcp_adapter *, u32);
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struct zfcp_adapter *zfcp_get_adapter_by_busid(char *);
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extern struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *);
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extern int zfcp_adapter_debug_register(struct zfcp_adapter *);
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extern void zfcp_adapter_dequeue(struct zfcp_adapter *);
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extern void zfcp_adapter_debug_unregister(struct zfcp_adapter *);
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extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, wwn_t,
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u32, u32);
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extern void zfcp_port_dequeue(struct zfcp_port *);
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extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, fcp_lun_t);
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extern void zfcp_unit_dequeue(struct zfcp_unit *);
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/******************************* S/390 IO ************************************/
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extern int zfcp_ccw_register(void);
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extern void zfcp_ccw_unregister(void);
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extern void zfcp_qdio_zero_sbals(struct qdio_buffer **, int, int);
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extern int zfcp_qdio_allocate(struct zfcp_adapter *);
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extern int zfcp_qdio_allocate_queues(struct zfcp_adapter *);
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extern void zfcp_qdio_free_queues(struct zfcp_adapter *);
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extern int zfcp_qdio_determine_pci(struct zfcp_qdio_queue *,
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struct zfcp_fsf_req *);
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extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_req
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(struct zfcp_fsf_req *, int, int);
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extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_curr
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(struct zfcp_fsf_req *);
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extern int zfcp_qdio_sbals_from_sg
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(struct zfcp_fsf_req *, unsigned long, struct scatterlist *, int, int);
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extern int zfcp_qdio_sbals_from_scsicmnd
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(struct zfcp_fsf_req *, unsigned long, struct scsi_cmnd *);
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/******************************** FSF ****************************************/
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extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
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extern int zfcp_fsf_close_port(struct zfcp_erp_action *);
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extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
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extern int zfcp_fsf_open_unit(struct zfcp_erp_action *);
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extern int zfcp_fsf_close_unit(struct zfcp_erp_action *);
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extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
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extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *,
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struct zfcp_adapter *,
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struct fsf_qtcb_bottom_port *);
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extern int zfcp_fsf_control_file(struct zfcp_adapter *, struct zfcp_fsf_req **,
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u32, u32, struct zfcp_sg_list *);
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extern void zfcp_fsf_request_timeout_handler(unsigned long);
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extern void zfcp_fsf_scsi_er_timeout_handler(unsigned long);
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extern int zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
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extern int zfcp_fsf_status_read(struct zfcp_adapter *, int);
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extern int zfcp_fsf_req_create(struct zfcp_adapter *, u32, int, mempool_t *,
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unsigned long *, struct zfcp_fsf_req **);
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extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *,
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struct zfcp_erp_action *);
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extern int zfcp_fsf_send_els(struct zfcp_send_els *);
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extern int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *,
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struct zfcp_unit *,
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struct scsi_cmnd *,
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struct timer_list*, int);
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extern int zfcp_fsf_req_complete(struct zfcp_fsf_req *);
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extern void zfcp_fsf_incoming_els(struct zfcp_fsf_req *);
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extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
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extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_command_task_management(
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struct zfcp_adapter *, struct zfcp_unit *, u8, int);
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extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(
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unsigned long, struct zfcp_adapter *, struct zfcp_unit *, int);
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/******************************* FC/FCP **************************************/
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extern int zfcp_nameserver_enqueue(struct zfcp_adapter *);
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extern int zfcp_ns_gid_pn_request(struct zfcp_erp_action *);
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extern int zfcp_check_ct_response(struct ct_hdr *);
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extern int zfcp_handle_els_rjt(u32, struct zfcp_ls_rjt_par *);
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extern void zfcp_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
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/******************************* SCSI ****************************************/
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extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
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extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
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extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t);
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extern char *zfcp_get_fcp_rsp_info_ptr(struct fcp_rsp_iu *);
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extern void set_host_byte(u32 *, char);
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extern void set_driver_byte(u32 *, char);
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extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
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extern void zfcp_fsf_start_scsi_er_timer(struct zfcp_adapter *);
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extern fcp_dl_t zfcp_get_fcp_dl(struct fcp_cmnd_iu *);
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extern int zfcp_scsi_command_async(struct zfcp_adapter *,struct zfcp_unit *,
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struct scsi_cmnd *, struct timer_list *);
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extern int zfcp_scsi_command_sync(struct zfcp_unit *, struct scsi_cmnd *,
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struct timer_list *);
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extern struct scsi_transport_template *zfcp_transport_template;
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extern struct fc_function_template zfcp_transport_functions;
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/******************************** ERP ****************************************/
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extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, u32, int);
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extern int zfcp_erp_adapter_reopen(struct zfcp_adapter *, int);
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extern int zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int);
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extern void zfcp_erp_adapter_failed(struct zfcp_adapter *);
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extern void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *);
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extern void zfcp_erp_modify_port_status(struct zfcp_port *, u32, int);
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extern int zfcp_erp_port_reopen(struct zfcp_port *, int);
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extern int zfcp_erp_port_shutdown(struct zfcp_port *, int);
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extern int zfcp_erp_port_forced_reopen(struct zfcp_port *, int);
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extern void zfcp_erp_port_failed(struct zfcp_port *);
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extern int zfcp_erp_port_reopen_all(struct zfcp_adapter *, int);
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extern void zfcp_erp_modify_unit_status(struct zfcp_unit *, u32, int);
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extern int zfcp_erp_unit_reopen(struct zfcp_unit *, int);
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extern int zfcp_erp_unit_shutdown(struct zfcp_unit *, int);
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extern void zfcp_erp_unit_failed(struct zfcp_unit *);
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extern int zfcp_erp_thread_setup(struct zfcp_adapter *);
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extern int zfcp_erp_thread_kill(struct zfcp_adapter *);
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extern int zfcp_erp_wait(struct zfcp_adapter *);
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extern void zfcp_erp_async_handler(struct zfcp_erp_action *, unsigned long);
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extern int zfcp_test_link(struct zfcp_port *);
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extern void zfcp_erp_port_boxed(struct zfcp_port *);
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extern void zfcp_erp_unit_boxed(struct zfcp_unit *);
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extern void zfcp_erp_port_access_denied(struct zfcp_port *);
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extern void zfcp_erp_unit_access_denied(struct zfcp_unit *);
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extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *);
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extern void zfcp_erp_port_access_changed(struct zfcp_port *);
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extern void zfcp_erp_unit_access_changed(struct zfcp_unit *);
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/******************************** AUX ****************************************/
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extern void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *);
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extern void zfcp_hba_dbf_event_fsf_unsol(const char *, struct zfcp_adapter *,
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struct fsf_status_read_buffer *);
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extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *,
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unsigned int, unsigned int, unsigned int,
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int, int);
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extern void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *);
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extern void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *);
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extern void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *);
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extern void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *);
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extern void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *);
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extern void zfcp_scsi_dbf_event_result(const char *, int, struct zfcp_adapter *,
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struct scsi_cmnd *,
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struct zfcp_fsf_req *);
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extern void zfcp_scsi_dbf_event_abort(const char *, struct zfcp_adapter *,
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struct scsi_cmnd *, struct zfcp_fsf_req *,
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struct zfcp_fsf_req *);
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extern void zfcp_scsi_dbf_event_devreset(const char *, u8, struct zfcp_unit *,
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struct scsi_cmnd *);
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extern void zfcp_reqlist_add(struct zfcp_adapter *, struct zfcp_fsf_req *);
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extern void zfcp_reqlist_remove(struct zfcp_adapter *, unsigned long);
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extern struct zfcp_fsf_req *zfcp_reqlist_ismember(struct zfcp_adapter *,
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unsigned long);
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extern int zfcp_reqlist_isempty(struct zfcp_adapter *);
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#endif /* ZFCP_EXT_H */
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