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698ec01635
linux/drivers/s390/scsi/zfcp_ext.h
Martin Peschke 698ec01635 [SCSI] zfcp: Add traces for state changes. 
This patch writes a trace record which provides information about state
changes for adapters, ports and units, e.g. target failure, targets becoming
online, targets being temporarily blocked due to pending recovery, targets
which have been recovered successfully etc.

Signed-off-by: Martin Peschke <mp3@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-07 12:19:04 -05:00

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/*
* This file is part of the zfcp device driver for
* FCP adapters for IBM System z9 and zSeries.
*
* (C) Copyright IBM Corp. 2002, 2006
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef ZFCP_EXT_H
#define ZFCP_EXT_H
#include "zfcp_def.h"
extern struct zfcp_data zfcp_data;
/******************************** SYSFS *************************************/
extern struct attribute_group *zfcp_driver_attr_groups[];
extern int zfcp_sysfs_adapter_create_files(struct device *);
extern void zfcp_sysfs_adapter_remove_files(struct device *);
extern int zfcp_sysfs_port_create_files(struct device *, u32);
extern void zfcp_sysfs_port_remove_files(struct device *, u32);
extern int zfcp_sysfs_unit_create_files(struct device *);
extern void zfcp_sysfs_unit_remove_files(struct device *);
extern void zfcp_sysfs_port_release(struct device *);
extern void zfcp_sysfs_unit_release(struct device *);
/**************************** CONFIGURATION *********************************/
extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, fcp_lun_t);
extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, wwn_t);
extern struct zfcp_port *zfcp_get_port_by_did(struct zfcp_adapter *, u32);
struct zfcp_adapter *zfcp_get_adapter_by_busid(char *);
extern struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *);
extern int zfcp_adapter_debug_register(struct zfcp_adapter *);
extern void zfcp_adapter_dequeue(struct zfcp_adapter *);
extern void zfcp_adapter_debug_unregister(struct zfcp_adapter *);
extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, wwn_t,
u32, u32);
extern void zfcp_port_dequeue(struct zfcp_port *);
extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, fcp_lun_t);
extern void zfcp_unit_dequeue(struct zfcp_unit *);
/******************************* S/390 IO ************************************/
extern int zfcp_ccw_register(void);
extern void zfcp_qdio_zero_sbals(struct qdio_buffer **, int, int);
extern int zfcp_qdio_allocate(struct zfcp_adapter *);
extern int zfcp_qdio_allocate_queues(struct zfcp_adapter *);
extern void zfcp_qdio_free_queues(struct zfcp_adapter *);
extern int zfcp_qdio_determine_pci(struct zfcp_qdio_queue *,
struct zfcp_fsf_req *);
extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_req
(struct zfcp_fsf_req *, int, int);
extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_curr
(struct zfcp_fsf_req *);
extern int zfcp_qdio_sbals_from_sg
(struct zfcp_fsf_req *, unsigned long, struct scatterlist *, int, int);
extern int zfcp_qdio_sbals_from_scsicmnd
(struct zfcp_fsf_req *, unsigned long, struct scsi_cmnd *);
/******************************** FSF ****************************************/
extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
extern int zfcp_fsf_close_port(struct zfcp_erp_action *);
extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
extern int zfcp_fsf_open_unit(struct zfcp_erp_action *);
extern int zfcp_fsf_close_unit(struct zfcp_erp_action *);
extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *,
struct fsf_qtcb_bottom_config *);
extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *);
extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *,
struct fsf_qtcb_bottom_port *);
extern int zfcp_fsf_control_file(struct zfcp_adapter *, struct zfcp_fsf_req **,
u32, u32, struct zfcp_sg_list *);
extern void zfcp_fsf_start_timer(struct zfcp_fsf_req *, unsigned long);
extern void zfcp_erp_start_timer(struct zfcp_fsf_req *);
extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
extern int zfcp_fsf_status_read(struct zfcp_adapter *, int);
extern int zfcp_fsf_req_create(struct zfcp_adapter *, u32, int, mempool_t *,
unsigned long *, struct zfcp_fsf_req **);
extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *,
struct zfcp_erp_action *);
extern int zfcp_fsf_send_els(struct zfcp_send_els *);
extern int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *,
struct zfcp_unit *,
struct scsi_cmnd *, int, int);
extern int zfcp_fsf_req_complete(struct zfcp_fsf_req *);
extern void zfcp_fsf_incoming_els(struct zfcp_fsf_req *);
extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_command_task_management(
struct zfcp_adapter *, struct zfcp_unit *, u8, int);
extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(
unsigned long, struct zfcp_adapter *, struct zfcp_unit *, int);
/******************************* FC/FCP **************************************/
extern int zfcp_nameserver_enqueue(struct zfcp_adapter *);
extern int zfcp_ns_gid_pn_request(struct zfcp_erp_action *);
extern int zfcp_check_ct_response(struct ct_hdr *);
extern int zfcp_handle_els_rjt(u32, struct zfcp_ls_rjt_par *);
extern void zfcp_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
/******************************* SCSI ****************************************/
extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t);
extern char *zfcp_get_fcp_rsp_info_ptr(struct fcp_rsp_iu *);
extern void set_host_byte(int *, char);
extern void set_driver_byte(int *, char);
extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
extern fcp_dl_t zfcp_get_fcp_dl(struct fcp_cmnd_iu *);
extern int zfcp_scsi_command_async(struct zfcp_adapter *,struct zfcp_unit *,
struct scsi_cmnd *, int);
extern int zfcp_scsi_command_sync(struct zfcp_unit *, struct scsi_cmnd *, int);
extern struct fc_function_template zfcp_transport_functions;
/******************************** ERP ****************************************/
extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, u8, u64, u32,
int);
extern int zfcp_erp_adapter_reopen(struct zfcp_adapter *, int);
extern int zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int);
extern void zfcp_erp_adapter_failed(struct zfcp_adapter *, u8, u64);
extern void zfcp_erp_modify_port_status(struct zfcp_port *, u8, u64, u32, int);
extern int zfcp_erp_port_reopen(struct zfcp_port *, int);
extern int zfcp_erp_port_shutdown(struct zfcp_port *, int);
extern int zfcp_erp_port_forced_reopen(struct zfcp_port *, int);
extern void zfcp_erp_port_failed(struct zfcp_port *, u8, u64);
extern int zfcp_erp_port_reopen_all(struct zfcp_adapter *, int);
extern void zfcp_erp_modify_unit_status(struct zfcp_unit *, u8, u64, u32, int);
extern int zfcp_erp_unit_reopen(struct zfcp_unit *, int);
extern int zfcp_erp_unit_shutdown(struct zfcp_unit *, int);
extern void zfcp_erp_unit_failed(struct zfcp_unit *, u8, u64);
extern int zfcp_erp_thread_setup(struct zfcp_adapter *);
extern int zfcp_erp_thread_kill(struct zfcp_adapter *);
extern int zfcp_erp_wait(struct zfcp_adapter *);
extern void zfcp_erp_async_handler(struct zfcp_erp_action *, unsigned long);
extern int zfcp_test_link(struct zfcp_port *);
extern void zfcp_erp_port_boxed(struct zfcp_port *, u8 id, u64 ref);
extern void zfcp_erp_unit_boxed(struct zfcp_unit *, u8 id, u64 ref);
extern void zfcp_erp_port_access_denied(struct zfcp_port *, u8 id, u64 ref);
extern void zfcp_erp_unit_access_denied(struct zfcp_unit *, u8 id, u64 ref);
extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *);
extern void zfcp_erp_port_access_changed(struct zfcp_port *);
extern void zfcp_erp_unit_access_changed(struct zfcp_unit *);
/******************************** AUX ****************************************/
extern void zfcp_rec_dbf_event_thread(u8 id, struct zfcp_adapter *adapter,
int lock);
extern void zfcp_rec_dbf_event_adapter(u8 id, u64 ref, struct zfcp_adapter *);
extern void zfcp_rec_dbf_event_port(u8 id, u64 ref, struct zfcp_port *port);
extern void zfcp_rec_dbf_event_unit(u8 id, u64 ref, struct zfcp_unit *unit);
extern void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *);
extern void zfcp_hba_dbf_event_fsf_unsol(const char *, struct zfcp_adapter *,
struct fsf_status_read_buffer *);
extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *,
unsigned int, unsigned int, unsigned int,
int, int);
extern void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *);
extern void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *);
extern void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *);
extern void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *);
extern void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *);
extern void zfcp_scsi_dbf_event_result(const char *, int, struct zfcp_adapter *,
struct scsi_cmnd *,
struct zfcp_fsf_req *);
extern void zfcp_scsi_dbf_event_abort(const char *, struct zfcp_adapter *,
struct scsi_cmnd *, struct zfcp_fsf_req *,
unsigned long);
extern void zfcp_scsi_dbf_event_devreset(const char *, u8, struct zfcp_unit *,
struct scsi_cmnd *);
extern int zfcp_reqlist_isempty(struct zfcp_adapter *);
#endif /* ZFCP_EXT_H */
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