drivers/s390/scsi/zfcp_dbf.h - linux - Git at Google

 /*
  * This file is part of the zfcp device driver for
  * FCP adapters for IBM System z9 and zSeries.
  *
  * Copyright IBM Corp. 2008, 2009
  *
  * 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_DBF_H
 #define ZFCP_DBF_H

 #include <scsi/fc/fc_fcp.h>
 #include "zfcp_ext.h"
 #include "zfcp_fsf.h"
 #include "zfcp_def.h"

 #define ZFCP_DBF_TAG_SIZE      4
 #define ZFCP_DBF_ID_SIZE       7

 struct zfcp_dbf_dump {
 	u8 tag[ZFCP_DBF_TAG_SIZE];
 	u32 total_size;		/* size of total dump data */
 	u32 offset;		/* how much data has being already dumped */
 	u32 size;		/* how much data comes with this record */
 	u8 data[];		/* dump data */
 } __attribute__ ((packed));

 struct zfcp_dbf_rec_record_thread {
 	u32 total;
 	u32 ready;
 	u32 running;
 };

 struct zfcp_dbf_rec_record_target {
 	u64 ref;
 	u32 status;
 	u32 d_id;
 	u64 wwpn;
 	u64 fcp_lun;
 	u32 erp_count;
 };

 struct zfcp_dbf_rec_record_trigger {
 	u8 want;
 	u8 need;
 	u32 as;
 	u32 ps;
 	u32 us;
 	u64 ref;
 	u64 action;
 	u64 wwpn;
 	u64 fcp_lun;
 };

 struct zfcp_dbf_rec_record_action {
 	u32 status;
 	u32 step;
 	u64 action;
 	u64 fsf_req;
 };

 struct zfcp_dbf_rec_record {
 	u8 id;
 	char id2[7];
 	union {
 		struct zfcp_dbf_rec_record_action action;
 		struct zfcp_dbf_rec_record_thread thread;
 		struct zfcp_dbf_rec_record_target target;
 		struct zfcp_dbf_rec_record_trigger trigger;
 	} u;
 };

 enum {
 	ZFCP_REC_DBF_ID_ACTION,
 	ZFCP_REC_DBF_ID_THREAD,
 	ZFCP_REC_DBF_ID_TARGET,
 	ZFCP_REC_DBF_ID_TRIGGER,
 };

 struct zfcp_dbf_hba_record_response {
 	u32 fsf_command;
 	u64 fsf_reqid;
 	u32 fsf_seqno;
 	u64 fsf_issued;
 	u32 fsf_prot_status;
 	u32 fsf_status;
 	u8 fsf_prot_status_qual[FSF_PROT_STATUS_QUAL_SIZE];
 	u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
 	u32 fsf_req_status;
 	u8 sbal_first;
 	u8 sbal_last;
 	u8 sbal_response;
 	u8 pool;
 	u64 erp_action;
 	union {
 		struct {
 			u64 cmnd;
 			u64 serial;
 		} fcp;
 		struct {
 			u64 wwpn;
 			u32 d_id;
 			u32 port_handle;
 		} port;
 		struct {
 			u64 wwpn;
 			u64 fcp_lun;
 			u32 port_handle;
 			u32 lun_handle;
 		} unit;
 		struct {
 			u32 d_id;
 		} els;
 	} u;
 } __attribute__ ((packed));

 struct zfcp_dbf_hba_record_status {
 	u8 failed;
 	u32 status_type;
 	u32 status_subtype;
 	struct fsf_queue_designator
 	 queue_designator;
 	u32 payload_size;
 #define ZFCP_DBF_UNSOL_PAYLOAD				80
 #define ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL		32
 #define ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD	56
 #define ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT	2 * sizeof(u32)
 	u8 payload[ZFCP_DBF_UNSOL_PAYLOAD];
 } __attribute__ ((packed));

 struct zfcp_dbf_hba_record_qdio {
 	u32 qdio_error;
 	u8 sbal_index;
 	u8 sbal_count;
 } __attribute__ ((packed));

 struct zfcp_dbf_hba_record {
 	u8 tag[ZFCP_DBF_TAG_SIZE];
 	u8 tag2[ZFCP_DBF_TAG_SIZE];
 	union {
 		struct zfcp_dbf_hba_record_response response;
 		struct zfcp_dbf_hba_record_status status;
 		struct zfcp_dbf_hba_record_qdio qdio;
 		struct fsf_bit_error_payload berr;
 	} u;
 } __attribute__ ((packed));

 struct zfcp_dbf_san_record_ct_request {
 	u16 cmd_req_code;
 	u8 revision;
 	u8 gs_type;
 	u8 gs_subtype;
 	u8 options;
 	u16 max_res_size;
 	u32 len;
 	u32 d_id;
 } __attribute__ ((packed));

 struct zfcp_dbf_san_record_ct_response {
 	u16 cmd_rsp_code;
 	u8 revision;
 	u8 reason_code;
 	u8 expl;
 	u8 vendor_unique;
 	u16 max_res_size;
 	u32 len;
 } __attribute__ ((packed));

 struct zfcp_dbf_san_record_els {
 	u32 d_id;
 } __attribute__ ((packed));

 struct zfcp_dbf_san_record {
 	u8 tag[ZFCP_DBF_TAG_SIZE];
 	u64 fsf_reqid;
 	u32 fsf_seqno;
 	union {
 		struct zfcp_dbf_san_record_ct_request ct_req;
 		struct zfcp_dbf_san_record_ct_response ct_resp;
 		struct zfcp_dbf_san_record_els els;
 	} u;
 #define ZFCP_DBF_SAN_MAX_PAYLOAD 1024
 	u8 payload[32];
 } __attribute__ ((packed));

 struct zfcp_dbf_scsi_record {
 	u8 tag[ZFCP_DBF_TAG_SIZE];
 	u8 tag2[ZFCP_DBF_TAG_SIZE];
 	u32 scsi_id;
 	u32 scsi_lun;
 	u32 scsi_result;
 	u64 scsi_cmnd;
 	u64 scsi_serial;
 #define ZFCP_DBF_SCSI_OPCODE	16
 	u8 scsi_opcode[ZFCP_DBF_SCSI_OPCODE];
 	u8 scsi_retries;
 	u8 scsi_allowed;
 	u64 fsf_reqid;
 	u32 fsf_seqno;
 	u64 fsf_issued;
 	u64 old_fsf_reqid;
 	u8 rsp_validity;
 	u8 rsp_scsi_status;
 	u32 rsp_resid;
 	u8 rsp_code;
 #define ZFCP_DBF_SCSI_FCP_SNS_INFO	16
 #define ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO	256
 	u32 sns_info_len;
 	u8 sns_info[ZFCP_DBF_SCSI_FCP_SNS_INFO];
 } __attribute__ ((packed));

 struct zfcp_dbf {
 	debug_info_t			*rec;
 	debug_info_t			*hba;
 	debug_info_t			*san;
 	debug_info_t			*scsi;
 	spinlock_t			rec_lock;
 	spinlock_t			hba_lock;
 	spinlock_t			san_lock;
 	spinlock_t			scsi_lock;
 	struct zfcp_dbf_rec_record	rec_buf;
 	struct zfcp_dbf_hba_record	hba_buf;
 	struct zfcp_dbf_san_record	san_buf;
 	struct zfcp_dbf_scsi_record	scsi_buf;
 	struct zfcp_adapter		*adapter;
 };

 static inline
 void zfcp_dbf_hba_fsf_resp(const char *tag2, int level,
 			   struct zfcp_fsf_req *req, struct zfcp_dbf *dbf)
 {
 	if (level <= dbf->hba->level)
 		_zfcp_dbf_hba_fsf_response(tag2, level, req, dbf);
 }

 /**
  * zfcp_dbf_hba_fsf_response - trace event for request completion
  * @fsf_req: request that has been completed
  */
 static inline void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req)
 {
 	struct zfcp_dbf *dbf = req->adapter->dbf;
 	struct fsf_qtcb *qtcb = req->qtcb;

 	if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
 	    (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
 		zfcp_dbf_hba_fsf_resp("perr", 1, req, dbf);

 	} else if (qtcb->header.fsf_status != FSF_GOOD) {
 		zfcp_dbf_hba_fsf_resp("ferr", 1, req, dbf);

 	} else if ((req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
 		   (req->fsf_command == FSF_QTCB_OPEN_LUN)) {
 		zfcp_dbf_hba_fsf_resp("open", 4, req, dbf);

 	} else if (qtcb->header.log_length) {
 		zfcp_dbf_hba_fsf_resp("qtcb", 5, req, dbf);

 	} else {
 		zfcp_dbf_hba_fsf_resp("norm", 6, req, dbf);
 	}
  }

 /**
  * zfcp_dbf_hba_fsf_unsol - trace event for an unsolicited status buffer
  * @tag: tag indicating which kind of unsolicited status has been received
  * @dbf: reference to dbf structure
  * @status_buffer: buffer containing payload of unsolicited status
  */
 static inline
 void zfcp_dbf_hba_fsf_unsol(const char *tag, struct zfcp_dbf *dbf,
 			    struct fsf_status_read_buffer *buf)
 {
 	int level = 2;

 	if (level <= dbf->hba->level)
 		_zfcp_dbf_hba_fsf_unsol(tag, level, dbf, buf);
 }

 static inline
 void zfcp_dbf_scsi(const char *tag, const char *tag2, int level,
 		   struct zfcp_dbf *dbf, struct scsi_cmnd *scmd,
 		   struct zfcp_fsf_req *req, unsigned long old_id)
 {
 	if (level <= dbf->scsi->level)
 		_zfcp_dbf_scsi(tag, tag2, level, dbf, scmd, req, old_id);
 }

 /**
  * zfcp_dbf_scsi_result - trace event for SCSI command completion
  * @tag: tag indicating success or failure of SCSI command
  * @level: trace level applicable for this event
  * @adapter: adapter that has been used to issue the SCSI command
  * @scmd: SCSI command pointer
  * @fsf_req: request used to issue SCSI command (might be NULL)
  */
 static inline
 void zfcp_dbf_scsi_result(const char *tag, int level, struct zfcp_dbf *dbf,
 			  struct scsi_cmnd *scmd, struct zfcp_fsf_req *fsf_req)
 {
 	zfcp_dbf_scsi("rslt", tag, level, dbf, scmd, fsf_req, 0);
 }

 /**
  * zfcp_dbf_scsi_abort - trace event for SCSI command abort
  * @tag: tag indicating success or failure of abort operation
  * @adapter: adapter thas has been used to issue SCSI command to be aborted
  * @scmd: SCSI command to be aborted
  * @new_req: request containing abort (might be NULL)
  * @old_id: identifier of request containg SCSI command to be aborted
  */
 static inline
 void zfcp_dbf_scsi_abort(const char *tag, struct zfcp_dbf *dbf,
 			 struct scsi_cmnd *scmd, struct zfcp_fsf_req *new_req,
 			 unsigned long old_id)
 {
 	zfcp_dbf_scsi("abrt", tag, 1, dbf, scmd, new_req, old_id);
 }

 /**
  * zfcp_dbf_scsi_devreset - trace event for Logical Unit or Target Reset
  * @tag: tag indicating success or failure of reset operation
  * @flag: indicates type of reset (Target Reset, Logical Unit Reset)
  * @unit: unit that needs reset
  * @scsi_cmnd: SCSI command which caused this error recovery
  */
 static inline
 void zfcp_dbf_scsi_devreset(const char *tag, u8 flag, struct zfcp_unit *unit,
 			    struct scsi_cmnd *scsi_cmnd)
 {
 	zfcp_dbf_scsi(flag == FCP_TMF_TGT_RESET ? "trst" : "lrst", tag, 1,
 			    unit->port->adapter->dbf, scsi_cmnd, NULL, 0);
 }

 #endif /* ZFCP_DBF_H */
	/*
	* This file is part of the zfcp device driver for
	* FCP adapters for IBM System z9 and zSeries.
	*
	* Copyright IBM Corp. 2008, 2009
	*
	* 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_DBF_H
	#define ZFCP_DBF_H

	#include <scsi/fc/fc_fcp.h>
	#include "zfcp_ext.h"
	#include "zfcp_fsf.h"
	#include "zfcp_def.h"

	#define ZFCP_DBF_TAG_SIZE 4
	#define ZFCP_DBF_ID_SIZE 7

	struct zfcp_dbf_dump {
	u8 tag[ZFCP_DBF_TAG_SIZE];
	u32 total_size; /* size of total dump data */
	u32 offset; /* how much data has being already dumped */
	u32 size; /* how much data comes with this record */
	u8 data[]; /* dump data */
	} __attribute__ ((packed));

	struct zfcp_dbf_rec_record_thread {
	u32 total;
	u32 ready;
	u32 running;
	};

	struct zfcp_dbf_rec_record_target {
	u64 ref;
	u32 status;
	u32 d_id;
	u64 wwpn;
	u64 fcp_lun;
	u32 erp_count;
	};

	struct zfcp_dbf_rec_record_trigger {
	u8 want;
	u8 need;
	u32 as;
	u32 ps;
	u32 us;
	u64 ref;
	u64 action;
	u64 wwpn;
	u64 fcp_lun;
	};

	struct zfcp_dbf_rec_record_action {
	u32 status;
	u32 step;
	u64 action;
	u64 fsf_req;
	};

	struct zfcp_dbf_rec_record {
	u8 id;
	char id2[7];
	union {
	struct zfcp_dbf_rec_record_action action;
	struct zfcp_dbf_rec_record_thread thread;
	struct zfcp_dbf_rec_record_target target;
	struct zfcp_dbf_rec_record_trigger trigger;
	} u;
	};

	enum {
	ZFCP_REC_DBF_ID_ACTION,
	ZFCP_REC_DBF_ID_THREAD,
	ZFCP_REC_DBF_ID_TARGET,
	ZFCP_REC_DBF_ID_TRIGGER,
	};

	struct zfcp_dbf_hba_record_response {
	u32 fsf_command;
	u64 fsf_reqid;
	u32 fsf_seqno;
	u64 fsf_issued;
	u32 fsf_prot_status;
	u32 fsf_status;
	u8 fsf_prot_status_qual[FSF_PROT_STATUS_QUAL_SIZE];
	u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
	u32 fsf_req_status;
	u8 sbal_first;
	u8 sbal_last;
	u8 sbal_response;
	u8 pool;
	u64 erp_action;
	union {
	struct {
	u64 cmnd;
	u64 serial;
	} fcp;
	struct {
	u64 wwpn;
	u32 d_id;
	u32 port_handle;
	} port;
	struct {
	u64 wwpn;
	u64 fcp_lun;
	u32 port_handle;
	u32 lun_handle;
	} unit;
	struct {
	u32 d_id;
	} els;
	} u;
	} __attribute__ ((packed));

	struct zfcp_dbf_hba_record_status {
	u8 failed;
	u32 status_type;
	u32 status_subtype;
	struct fsf_queue_designator
	queue_designator;
	u32 payload_size;
	#define ZFCP_DBF_UNSOL_PAYLOAD 80
	#define ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL 32
	#define ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD 56
	#define ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT 2 * sizeof(u32)
	u8 payload[ZFCP_DBF_UNSOL_PAYLOAD];
	} __attribute__ ((packed));

	struct zfcp_dbf_hba_record_qdio {
	u32 qdio_error;
	u8 sbal_index;
	u8 sbal_count;
	} __attribute__ ((packed));

	struct zfcp_dbf_hba_record {
	u8 tag[ZFCP_DBF_TAG_SIZE];
	u8 tag2[ZFCP_DBF_TAG_SIZE];
	union {
	struct zfcp_dbf_hba_record_response response;
	struct zfcp_dbf_hba_record_status status;
	struct zfcp_dbf_hba_record_qdio qdio;
	struct fsf_bit_error_payload berr;
	} u;
	} __attribute__ ((packed));

	struct zfcp_dbf_san_record_ct_request {
	u16 cmd_req_code;
	u8 revision;
	u8 gs_type;
	u8 gs_subtype;
	u8 options;
	u16 max_res_size;
	u32 len;
	u32 d_id;
	} __attribute__ ((packed));

	struct zfcp_dbf_san_record_ct_response {
	u16 cmd_rsp_code;
	u8 revision;
	u8 reason_code;
	u8 expl;
	u8 vendor_unique;
	u16 max_res_size;
	u32 len;
	} __attribute__ ((packed));

	struct zfcp_dbf_san_record_els {
	u32 d_id;
	} __attribute__ ((packed));

	struct zfcp_dbf_san_record {
	u8 tag[ZFCP_DBF_TAG_SIZE];
	u64 fsf_reqid;
	u32 fsf_seqno;
	union {
	struct zfcp_dbf_san_record_ct_request ct_req;
	struct zfcp_dbf_san_record_ct_response ct_resp;
	struct zfcp_dbf_san_record_els els;
	} u;
	#define ZFCP_DBF_SAN_MAX_PAYLOAD 1024
	u8 payload[32];
	} __attribute__ ((packed));

	struct zfcp_dbf_scsi_record {
	u8 tag[ZFCP_DBF_TAG_SIZE];
	u8 tag2[ZFCP_DBF_TAG_SIZE];
	u32 scsi_id;
	u32 scsi_lun;
	u32 scsi_result;
	u64 scsi_cmnd;
	u64 scsi_serial;
	#define ZFCP_DBF_SCSI_OPCODE 16
	u8 scsi_opcode[ZFCP_DBF_SCSI_OPCODE];
	u8 scsi_retries;
	u8 scsi_allowed;
	u64 fsf_reqid;
	u32 fsf_seqno;
	u64 fsf_issued;
	u64 old_fsf_reqid;
	u8 rsp_validity;
	u8 rsp_scsi_status;
	u32 rsp_resid;
	u8 rsp_code;
	#define ZFCP_DBF_SCSI_FCP_SNS_INFO 16
	#define ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO 256
	u32 sns_info_len;
	u8 sns_info[ZFCP_DBF_SCSI_FCP_SNS_INFO];
	} __attribute__ ((packed));

	struct zfcp_dbf {
	debug_info_t *rec;
	debug_info_t *hba;
	debug_info_t *san;
	debug_info_t *scsi;
	spinlock_t rec_lock;
	spinlock_t hba_lock;
	spinlock_t san_lock;
	spinlock_t scsi_lock;
	struct zfcp_dbf_rec_record rec_buf;
	struct zfcp_dbf_hba_record hba_buf;
	struct zfcp_dbf_san_record san_buf;
	struct zfcp_dbf_scsi_record scsi_buf;
	struct zfcp_adapter *adapter;
	};

	static inline
	void zfcp_dbf_hba_fsf_resp(const char *tag2, int level,
	struct zfcp_fsf_req req, struct zfcp_dbf dbf)
	{
	if (level <= dbf->hba->level)
	_zfcp_dbf_hba_fsf_response(tag2, level, req, dbf);
	}

	/**
	* zfcp_dbf_hba_fsf_response - trace event for request completion
	* @fsf_req: request that has been completed
	*/
	static inline void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req)
	{
	struct zfcp_dbf *dbf = req->adapter->dbf;
	struct fsf_qtcb *qtcb = req->qtcb;

	if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
	(qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
	zfcp_dbf_hba_fsf_resp("perr", 1, req, dbf);

	} else if (qtcb->header.fsf_status != FSF_GOOD) {
	zfcp_dbf_hba_fsf_resp("ferr", 1, req, dbf);

	} else if ((req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) \|\|
	(req->fsf_command == FSF_QTCB_OPEN_LUN)) {
	zfcp_dbf_hba_fsf_resp("open", 4, req, dbf);

	} else if (qtcb->header.log_length) {
	zfcp_dbf_hba_fsf_resp("qtcb", 5, req, dbf);

	} else {
	zfcp_dbf_hba_fsf_resp("norm", 6, req, dbf);
	}
	}

	/**
	* zfcp_dbf_hba_fsf_unsol - trace event for an unsolicited status buffer
	* @tag: tag indicating which kind of unsolicited status has been received
	* @dbf: reference to dbf structure
	* @status_buffer: buffer containing payload of unsolicited status
	*/
	static inline
	void zfcp_dbf_hba_fsf_unsol(const char tag, struct zfcp_dbf dbf,
	struct fsf_status_read_buffer *buf)
	{
	int level = 2;

	if (level <= dbf->hba->level)
	_zfcp_dbf_hba_fsf_unsol(tag, level, dbf, buf);
	}

	static inline
	void zfcp_dbf_scsi(const char tag, const char tag2, int level,
	struct zfcp_dbf dbf, struct scsi_cmnd scmd,
	struct zfcp_fsf_req *req, unsigned long old_id)
	{
	if (level <= dbf->scsi->level)
	_zfcp_dbf_scsi(tag, tag2, level, dbf, scmd, req, old_id);
	}

	/**
	* zfcp_dbf_scsi_result - trace event for SCSI command completion
	* @tag: tag indicating success or failure of SCSI command
	* @level: trace level applicable for this event
	* @adapter: adapter that has been used to issue the SCSI command
	* @scmd: SCSI command pointer
	* @fsf_req: request used to issue SCSI command (might be NULL)
	*/
	static inline
	void zfcp_dbf_scsi_result(const char tag, int level, struct zfcp_dbf dbf,
	struct scsi_cmnd scmd, struct zfcp_fsf_req fsf_req)
	{
	zfcp_dbf_scsi("rslt", tag, level, dbf, scmd, fsf_req, 0);
	}

	/**
	* zfcp_dbf_scsi_abort - trace event for SCSI command abort
	* @tag: tag indicating success or failure of abort operation
	* @adapter: adapter thas has been used to issue SCSI command to be aborted
	* @scmd: SCSI command to be aborted
	* @new_req: request containing abort (might be NULL)
	* @old_id: identifier of request containg SCSI command to be aborted
	*/
	static inline
	void zfcp_dbf_scsi_abort(const char tag, struct zfcp_dbf dbf,
	struct scsi_cmnd scmd, struct zfcp_fsf_req new_req,
	unsigned long old_id)
	{
	zfcp_dbf_scsi("abrt", tag, 1, dbf, scmd, new_req, old_id);
	}

	/**
	* zfcp_dbf_scsi_devreset - trace event for Logical Unit or Target Reset
	* @tag: tag indicating success or failure of reset operation
	* @flag: indicates type of reset (Target Reset, Logical Unit Reset)
	* @unit: unit that needs reset
	* @scsi_cmnd: SCSI command which caused this error recovery
	*/
	static inline
	void zfcp_dbf_scsi_devreset(const char tag, u8 flag, struct zfcp_unit unit,
	struct scsi_cmnd *scsi_cmnd)
	{
	zfcp_dbf_scsi(flag == FCP_TMF_TGT_RESET ? "trst" : "lrst", tag, 1,
	unit->port->adapter->dbf, scsi_cmnd, NULL, 0);
	}

	#endif /* ZFCP_DBF_H */