[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / s390 / scsi / zfcp_dbf.h

/*
 * zfcp device driver
 * debug feature declarations
 *
 * Copyright IBM Corp. 2008, 2015
 */

#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_LEN       7

#define ZFCP_DBF_INVALID_LUN	0xFFFFFFFFFFFFFFFFull

enum zfcp_dbf_pseudo_erp_act_type {
	ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD = 0xff,
	ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL = 0xfe,
};

/**
 * struct zfcp_dbf_rec_trigger - trace record for triggered recovery action
 * @ready: number of ready recovery actions
 * @running: number of running recovery actions
 * @want: wanted recovery action
 * @need: needed recovery action
 */
struct zfcp_dbf_rec_trigger {
	u32 ready;
	u32 running;
	u8 want;
	u8 need;
} __packed;

/**
 * struct zfcp_dbf_rec_running - trace record for running recovery
 * @fsf_req_id: request id for fsf requests
 * @rec_status: status of the fsf request
 * @rec_step: current step of the recovery action
 * rec_count: recovery counter
 */
struct zfcp_dbf_rec_running {
	u64 fsf_req_id;
	u32 rec_status;
	u16 rec_step;
	u8 rec_action;
	u8 rec_count;
} __packed;

/**
 * enum zfcp_dbf_rec_id - recovery trace record id
 * @ZFCP_DBF_REC_TRIG: triggered recovery identifier
 * @ZFCP_DBF_REC_RUN: running recovery identifier
 */
enum zfcp_dbf_rec_id {
	ZFCP_DBF_REC_TRIG	= 1,
	ZFCP_DBF_REC_RUN	= 2,
};

/**
 * struct zfcp_dbf_rec - trace record for error recovery actions
 * @id: unique number of recovery record type
 * @tag: identifier string specifying the location of initiation
 * @lun: logical unit number
 * @wwpn: word wide port number
 * @d_id: destination ID
 * @adapter_status: current status of the adapter
 * @port_status: current status of the port
 * @lun_status: current status of the lun
 * @u.trig: structure zfcp_dbf_rec_trigger
 * @u.run: structure zfcp_dbf_rec_running
 */
struct zfcp_dbf_rec {
	u8 id;
	char tag[ZFCP_DBF_TAG_LEN];
	u64 lun;
	u64 wwpn;
	u32 d_id;
	u32 adapter_status;
	u32 port_status;
	u32 lun_status;
	union {
		struct zfcp_dbf_rec_trigger trig;
		struct zfcp_dbf_rec_running run;
	} u;
} __packed;

/**
 * enum zfcp_dbf_san_id - SAN trace record identifier
 * @ZFCP_DBF_SAN_REQ: request trace record id
 * @ZFCP_DBF_SAN_RES: response trace record id
 * @ZFCP_DBF_SAN_ELS: extended link service record id
 */
enum zfcp_dbf_san_id {
	ZFCP_DBF_SAN_REQ	= 1,
	ZFCP_DBF_SAN_RES	= 2,
	ZFCP_DBF_SAN_ELS	= 3,
};

/** struct zfcp_dbf_san - trace record for SAN requests and responses
 * @id: unique number of recovery record type
 * @tag: identifier string specifying the location of initiation
 * @fsf_req_id: request id for fsf requests
 * @payload: unformatted information related to request/response
 * @d_id: destination id
 */
struct zfcp_dbf_san {
	u8 id;
	char tag[ZFCP_DBF_TAG_LEN];
	u64 fsf_req_id;
	u32 d_id;
#define ZFCP_DBF_SAN_MAX_PAYLOAD (FC_CT_HDR_LEN + 32)
	char payload[ZFCP_DBF_SAN_MAX_PAYLOAD];
} __packed;

/**
 * struct zfcp_dbf_hba_res - trace record for hba responses
 * @req_issued: timestamp when request was issued
 * @prot_status: protocol status
 * @prot_status_qual: protocol status qualifier
 * @fsf_status: fsf status
 * @fsf_status_qual: fsf status qualifier
 */
struct zfcp_dbf_hba_res {
	u64 req_issued;
	u32 prot_status;
	u8  prot_status_qual[FSF_PROT_STATUS_QUAL_SIZE];
	u32 fsf_status;
	u8  fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
	u32 port_handle;
	u32 lun_handle;
} __packed;

/**
 * struct zfcp_dbf_hba_uss - trace record for unsolicited status
 * @status_type: type of unsolicited status
 * @status_subtype: subtype of unsolicited status
 * @d_id: destination ID
 * @lun: logical unit number
 * @queue_designator: queue designator
 */
struct zfcp_dbf_hba_uss {
	u32 status_type;
	u32 status_subtype;
	u32 d_id;
	u64 lun;
	u64 queue_designator;
} __packed;

/**
 * enum zfcp_dbf_hba_id - HBA trace record identifier
 * @ZFCP_DBF_HBA_RES: response trace record
 * @ZFCP_DBF_HBA_USS: unsolicited status trace record
 * @ZFCP_DBF_HBA_BIT: bit error trace record
 */
enum zfcp_dbf_hba_id {
	ZFCP_DBF_HBA_RES	= 1,
	ZFCP_DBF_HBA_USS	= 2,
	ZFCP_DBF_HBA_BIT	= 3,
	ZFCP_DBF_HBA_BASIC	= 4,
};

/**
 * struct zfcp_dbf_hba - common trace record for HBA records
 * @id: unique number of recovery record type
 * @tag: identifier string specifying the location of initiation
 * @fsf_req_id: request id for fsf requests
 * @fsf_req_status: status of fsf request
 * @fsf_cmd: fsf command
 * @fsf_seq_no: fsf sequence number
 * @pl_len: length of payload stored as zfcp_dbf_pay
 * @u: record type specific data
 */
struct zfcp_dbf_hba {
	u8 id;
	char tag[ZFCP_DBF_TAG_LEN];
	u64 fsf_req_id;
	u32 fsf_req_status;
	u32 fsf_cmd;
	u32 fsf_seq_no;
	u16 pl_len;
	union {
		struct zfcp_dbf_hba_res res;
		struct zfcp_dbf_hba_uss uss;
		struct fsf_bit_error_payload be;
	} u;
} __packed;

/**
 * enum zfcp_dbf_scsi_id - scsi trace record identifier
 * @ZFCP_DBF_SCSI_CMND: scsi command trace record
 */
enum zfcp_dbf_scsi_id {
	ZFCP_DBF_SCSI_CMND	= 1,
};

/**
 * struct zfcp_dbf_scsi - common trace record for SCSI records
 * @id: unique number of recovery record type
 * @tag: identifier string specifying the location of initiation
 * @scsi_id: scsi device id
 * @scsi_lun: scsi device logical unit number
 * @scsi_result: scsi result
 * @scsi_retries: current retry number of scsi request
 * @scsi_allowed: allowed retries
 * @fcp_rsp_info: FCP response info
 * @scsi_opcode: scsi opcode
 * @fsf_req_id: request id of fsf request
 * @host_scribble: LLD specific data attached to SCSI request
 * @pl_len: length of paload stored as zfcp_dbf_pay
 * @fsf_rsp: response for fsf request
 */
struct zfcp_dbf_scsi {
	u8 id;
	char tag[ZFCP_DBF_TAG_LEN];
	u32 scsi_id;
	u32 scsi_lun;
	u32 scsi_result;
	u8 scsi_retries;
	u8 scsi_allowed;
	u8 fcp_rsp_info;
#define ZFCP_DBF_SCSI_OPCODE	16
	u8 scsi_opcode[ZFCP_DBF_SCSI_OPCODE];
	u64 fsf_req_id;
	u64 host_scribble;
	u16 pl_len;
	struct fcp_resp_with_ext fcp_rsp;
} __packed;

/**
 * struct zfcp_dbf_pay - trace record for unformatted payload information
 * @area: area this record is originated from
 * @counter: ascending record number
 * @fsf_req_id: request id of fsf request
 * @data: unformatted data
 */
struct zfcp_dbf_pay {
	u8 counter;
	char area[ZFCP_DBF_TAG_LEN];
	u64 fsf_req_id;
#define ZFCP_DBF_PAY_MAX_REC 0x100
	char data[ZFCP_DBF_PAY_MAX_REC];
} __packed;

/**
 * struct zfcp_dbf - main dbf trace structure
 * @pay: reference to payload trace area
 * @rec: reference to recovery trace area
 * @hba: reference to hba trace area
 * @san: reference to san trace area
 * @scsi: reference to scsi trace area
 * @pay_lock: lock protecting payload trace buffer
 * @rec_lock: lock protecting recovery trace buffer
 * @hba_lock: lock protecting hba trace buffer
 * @san_lock: lock protecting san trace buffer
 * @scsi_lock: lock protecting scsi trace buffer
 * @pay_buf: pre-allocated buffer for payload
 * @rec_buf: pre-allocated buffer for recovery
 * @hba_buf: pre-allocated buffer for hba
 * @san_buf: pre-allocated buffer for san
 * @scsi_buf: pre-allocated buffer for scsi
 */
struct zfcp_dbf {
	debug_info_t			*pay;
	debug_info_t			*rec;
	debug_info_t			*hba;
	debug_info_t			*san;
	debug_info_t			*scsi;
	spinlock_t			pay_lock;
	spinlock_t			rec_lock;
	spinlock_t			hba_lock;
	spinlock_t			san_lock;
	spinlock_t			scsi_lock;
	struct zfcp_dbf_pay		pay_buf;
	struct zfcp_dbf_rec		rec_buf;
	struct zfcp_dbf_hba		hba_buf;
	struct zfcp_dbf_san		san_buf;
	struct zfcp_dbf_scsi		scsi_buf;
};

static inline
void zfcp_dbf_hba_fsf_resp(char *tag, int level, struct zfcp_fsf_req *req)
{
	if (level <= req->adapter->dbf->hba->level)
		zfcp_dbf_hba_fsf_res(tag, level, req);
}

/**
 * zfcp_dbf_hba_fsf_response - trace event for request completion
 * @req: request that has been completed
 */
static inline
void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req)
{
	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("fs_perr", 1, req);

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

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

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

	} else {
		zfcp_dbf_hba_fsf_resp("fs_norm", 6, req);
	}
}

static inline
void _zfcp_dbf_scsi(char *tag, int level, struct scsi_cmnd *scmd,
		   struct zfcp_fsf_req *req)
{
	struct zfcp_adapter *adapter = (struct zfcp_adapter *)
					scmd->device->host->hostdata[0];

	if (level <= adapter->dbf->scsi->level)
		zfcp_dbf_scsi(tag, level, scmd, req);
}

/**
 * zfcp_dbf_scsi_result - trace event for SCSI command completion
 * @scmd: SCSI command pointer
 * @req: FSF request used to issue SCSI command
 */
static inline
void zfcp_dbf_scsi_result(struct scsi_cmnd *scmd, struct zfcp_fsf_req *req)
{
	if (scmd->result != 0)
		_zfcp_dbf_scsi("rsl_err", 3, scmd, req);
	else if (scmd->retries > 0)
		_zfcp_dbf_scsi("rsl_ret", 4, scmd, req);
	else
		_zfcp_dbf_scsi("rsl_nor", 6, scmd, req);
}

/**
 * zfcp_dbf_scsi_fail_send - trace event for failure to send SCSI command
 * @scmd: SCSI command pointer
 */
static inline
void zfcp_dbf_scsi_fail_send(struct scsi_cmnd *scmd)
{
	_zfcp_dbf_scsi("rsl_fai", 4, scmd, NULL);
}

/**
 * zfcp_dbf_scsi_abort - trace event for SCSI command abort
 * @tag: tag indicating success or failure of abort operation
 * @scmd: SCSI command to be aborted
 * @fsf_req: request containing abort (might be NULL)
 */
static inline
void zfcp_dbf_scsi_abort(char *tag, struct scsi_cmnd *scmd,
			 struct zfcp_fsf_req *fsf_req)
{
	_zfcp_dbf_scsi(tag, 1, scmd, fsf_req);
}

/**
 * zfcp_dbf_scsi_devreset - trace event for Logical Unit or Target Reset
 * @tag: tag indicating success or failure of reset operation
 * @scmnd: SCSI command which caused this error recovery
 * @flag: indicates type of reset (Target Reset, Logical Unit Reset)
 */
static inline
void zfcp_dbf_scsi_devreset(char *tag, struct scsi_cmnd *scmnd, u8 flag)
{
	char tmp_tag[ZFCP_DBF_TAG_LEN];

	if (flag == FCP_TMF_TGT_RESET)
		memcpy(tmp_tag, "tr_", 3);
	else
		memcpy(tmp_tag, "lr_", 3);

	memcpy(&tmp_tag[3], tag, 4);
	_zfcp_dbf_scsi(tmp_tag, 1, scmnd, NULL);
}

#endif /* ZFCP_DBF_H */
Commit	Line	Data
	1	/*
	2	* zfcp device driver
	3	* debug feature declarations
	4	*
	5	* Copyright IBM Corp. 2008, 2015
	6	*/
	7
	8	#ifndef ZFCP_DBF_H
	9	#define ZFCP_DBF_H
	10
	11	#include <scsi/fc/fc_fcp.h>
	12	#include "zfcp_ext.h"
	13	#include "zfcp_fsf.h"
	14	#include "zfcp_def.h"
	15
	16	#define ZFCP_DBF_TAG_LEN 7
	17
	18	#define ZFCP_DBF_INVALID_LUN 0xFFFFFFFFFFFFFFFFull
	19
	20	enum zfcp_dbf_pseudo_erp_act_type {
	21	ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD = 0xff,
	22	ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL = 0xfe,
	23	};
	24
	25	/**
	26	* struct zfcp_dbf_rec_trigger - trace record for triggered recovery action
	27	* @ready: number of ready recovery actions
	28	* @running: number of running recovery actions
	29	* @want: wanted recovery action
	30	* @need: needed recovery action
	31	*/
	32	struct zfcp_dbf_rec_trigger {
	33	u32 ready;
	34	u32 running;
	35	u8 want;
	36	u8 need;
	37	} __packed;
	38
	39	/**
	40	* struct zfcp_dbf_rec_running - trace record for running recovery
	41	* @fsf_req_id: request id for fsf requests
	42	* @rec_status: status of the fsf request
	43	* @rec_step: current step of the recovery action
	44	* rec_count: recovery counter
	45	*/
	46	struct zfcp_dbf_rec_running {
	47	u64 fsf_req_id;
	48	u32 rec_status;
	49	u16 rec_step;
	50	u8 rec_action;
	51	u8 rec_count;
	52	} __packed;
	53
	54	/**
	55	* enum zfcp_dbf_rec_id - recovery trace record id
	56	* @ZFCP_DBF_REC_TRIG: triggered recovery identifier
	57	* @ZFCP_DBF_REC_RUN: running recovery identifier
	58	*/
	59	enum zfcp_dbf_rec_id {
	60	ZFCP_DBF_REC_TRIG = 1,
	61	ZFCP_DBF_REC_RUN = 2,
	62	};
	63
	64	/**
	65	* struct zfcp_dbf_rec - trace record for error recovery actions
	66	* @id: unique number of recovery record type
	67	* @tag: identifier string specifying the location of initiation
	68	* @lun: logical unit number
	69	* @wwpn: word wide port number
	70	* @d_id: destination ID
	71	* @adapter_status: current status of the adapter
	72	* @port_status: current status of the port
	73	* @lun_status: current status of the lun
	74	* @u.trig: structure zfcp_dbf_rec_trigger
	75	* @u.run: structure zfcp_dbf_rec_running
	76	*/
	77	struct zfcp_dbf_rec {
	78	u8 id;
	79	char tag[ZFCP_DBF_TAG_LEN];
	80	u64 lun;
	81	u64 wwpn;
	82	u32 d_id;
	83	u32 adapter_status;
	84	u32 port_status;
	85	u32 lun_status;
	86	union {
	87	struct zfcp_dbf_rec_trigger trig;
	88	struct zfcp_dbf_rec_running run;
	89	} u;
	90	} __packed;
	91
	92	/**
	93	* enum zfcp_dbf_san_id - SAN trace record identifier
	94	* @ZFCP_DBF_SAN_REQ: request trace record id
	95	* @ZFCP_DBF_SAN_RES: response trace record id
	96	* @ZFCP_DBF_SAN_ELS: extended link service record id
	97	*/
	98	enum zfcp_dbf_san_id {
	99	ZFCP_DBF_SAN_REQ = 1,
	100	ZFCP_DBF_SAN_RES = 2,
	101	ZFCP_DBF_SAN_ELS = 3,
	102	};
	103
	104	/** struct zfcp_dbf_san - trace record for SAN requests and responses
	105	* @id: unique number of recovery record type
	106	* @tag: identifier string specifying the location of initiation
	107	* @fsf_req_id: request id for fsf requests
	108	* @payload: unformatted information related to request/response
	109	* @d_id: destination id
	110	*/
	111	struct zfcp_dbf_san {
	112	u8 id;
	113	char tag[ZFCP_DBF_TAG_LEN];
	114	u64 fsf_req_id;
	115	u32 d_id;
	116	#define ZFCP_DBF_SAN_MAX_PAYLOAD (FC_CT_HDR_LEN + 32)
	117	char payload[ZFCP_DBF_SAN_MAX_PAYLOAD];
	118	} __packed;
	119
	120	/**
	121	* struct zfcp_dbf_hba_res - trace record for hba responses
	122	* @req_issued: timestamp when request was issued
	123	* @prot_status: protocol status
	124	* @prot_status_qual: protocol status qualifier
	125	* @fsf_status: fsf status
	126	* @fsf_status_qual: fsf status qualifier
	127	*/
	128	struct zfcp_dbf_hba_res {
	129	u64 req_issued;
	130	u32 prot_status;
	131	u8 prot_status_qual[FSF_PROT_STATUS_QUAL_SIZE];
	132	u32 fsf_status;
	133	u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
	134	u32 port_handle;
	135	u32 lun_handle;
	136	} __packed;
	137
	138	/**
	139	* struct zfcp_dbf_hba_uss - trace record for unsolicited status
	140	* @status_type: type of unsolicited status
	141	* @status_subtype: subtype of unsolicited status
	142	* @d_id: destination ID
	143	* @lun: logical unit number
	144	* @queue_designator: queue designator
	145	*/
	146	struct zfcp_dbf_hba_uss {
	147	u32 status_type;
	148	u32 status_subtype;
	149	u32 d_id;
	150	u64 lun;
	151	u64 queue_designator;
	152	} __packed;
	153
	154	/**
	155	* enum zfcp_dbf_hba_id - HBA trace record identifier
	156	* @ZFCP_DBF_HBA_RES: response trace record
	157	* @ZFCP_DBF_HBA_USS: unsolicited status trace record
	158	* @ZFCP_DBF_HBA_BIT: bit error trace record
	159	*/
	160	enum zfcp_dbf_hba_id {
	161	ZFCP_DBF_HBA_RES = 1,
	162	ZFCP_DBF_HBA_USS = 2,
	163	ZFCP_DBF_HBA_BIT = 3,
	164	ZFCP_DBF_HBA_BASIC = 4,
	165	};
	166
	167	/**
	168	* struct zfcp_dbf_hba - common trace record for HBA records
	169	* @id: unique number of recovery record type
	170	* @tag: identifier string specifying the location of initiation
	171	* @fsf_req_id: request id for fsf requests
	172	* @fsf_req_status: status of fsf request
	173	* @fsf_cmd: fsf command
	174	* @fsf_seq_no: fsf sequence number
	175	* @pl_len: length of payload stored as zfcp_dbf_pay
	176	* @u: record type specific data
	177	*/
	178	struct zfcp_dbf_hba {
	179	u8 id;
	180	char tag[ZFCP_DBF_TAG_LEN];
	181	u64 fsf_req_id;
	182	u32 fsf_req_status;
	183	u32 fsf_cmd;
	184	u32 fsf_seq_no;
	185	u16 pl_len;
	186	union {
	187	struct zfcp_dbf_hba_res res;
	188	struct zfcp_dbf_hba_uss uss;
	189	struct fsf_bit_error_payload be;
	190	} u;
	191	} __packed;
	192
	193	/**
	194	* enum zfcp_dbf_scsi_id - scsi trace record identifier
	195	* @ZFCP_DBF_SCSI_CMND: scsi command trace record
	196	*/
	197	enum zfcp_dbf_scsi_id {
	198	ZFCP_DBF_SCSI_CMND = 1,
	199	};
	200
	201	/**
	202	* struct zfcp_dbf_scsi - common trace record for SCSI records
	203	* @id: unique number of recovery record type
	204	* @tag: identifier string specifying the location of initiation
	205	* @scsi_id: scsi device id
	206	* @scsi_lun: scsi device logical unit number
	207	* @scsi_result: scsi result
	208	* @scsi_retries: current retry number of scsi request
	209	* @scsi_allowed: allowed retries
	210	* @fcp_rsp_info: FCP response info
	211	* @scsi_opcode: scsi opcode
	212	* @fsf_req_id: request id of fsf request
	213	* @host_scribble: LLD specific data attached to SCSI request
	214	* @pl_len: length of paload stored as zfcp_dbf_pay
	215	* @fsf_rsp: response for fsf request
	216	*/
	217	struct zfcp_dbf_scsi {
	218	u8 id;
	219	char tag[ZFCP_DBF_TAG_LEN];
	220	u32 scsi_id;
	221	u32 scsi_lun;
	222	u32 scsi_result;
	223	u8 scsi_retries;
	224	u8 scsi_allowed;
	225	u8 fcp_rsp_info;
	226	#define ZFCP_DBF_SCSI_OPCODE 16
	227	u8 scsi_opcode[ZFCP_DBF_SCSI_OPCODE];
	228	u64 fsf_req_id;
	229	u64 host_scribble;
	230	u16 pl_len;
	231	struct fcp_resp_with_ext fcp_rsp;
	232	} __packed;
	233
	234	/**
	235	* struct zfcp_dbf_pay - trace record for unformatted payload information
	236	* @area: area this record is originated from
	237	* @counter: ascending record number
	238	* @fsf_req_id: request id of fsf request
	239	* @data: unformatted data
	240	*/
	241	struct zfcp_dbf_pay {
	242	u8 counter;
	243	char area[ZFCP_DBF_TAG_LEN];
	244	u64 fsf_req_id;
	245	#define ZFCP_DBF_PAY_MAX_REC 0x100
	246	char data[ZFCP_DBF_PAY_MAX_REC];
	247	} __packed;
	248
	249	/**
	250	* struct zfcp_dbf - main dbf trace structure
	251	* @pay: reference to payload trace area
	252	* @rec: reference to recovery trace area
	253	* @hba: reference to hba trace area
	254	* @san: reference to san trace area
	255	* @scsi: reference to scsi trace area
	256	* @pay_lock: lock protecting payload trace buffer
	257	* @rec_lock: lock protecting recovery trace buffer
	258	* @hba_lock: lock protecting hba trace buffer
	259	* @san_lock: lock protecting san trace buffer
	260	* @scsi_lock: lock protecting scsi trace buffer
	261	* @pay_buf: pre-allocated buffer for payload
	262	* @rec_buf: pre-allocated buffer for recovery
	263	* @hba_buf: pre-allocated buffer for hba
	264	* @san_buf: pre-allocated buffer for san
	265	* @scsi_buf: pre-allocated buffer for scsi
	266	*/
	267	struct zfcp_dbf {
	268	debug_info_t *pay;
	269	debug_info_t *rec;
	270	debug_info_t *hba;
	271	debug_info_t *san;
	272	debug_info_t *scsi;
	273	spinlock_t pay_lock;
	274	spinlock_t rec_lock;
	275	spinlock_t hba_lock;
	276	spinlock_t san_lock;
	277	spinlock_t scsi_lock;
	278	struct zfcp_dbf_pay pay_buf;
	279	struct zfcp_dbf_rec rec_buf;
	280	struct zfcp_dbf_hba hba_buf;
	281	struct zfcp_dbf_san san_buf;
	282	struct zfcp_dbf_scsi scsi_buf;
	283	};
	284
	285	static inline
	286	void zfcp_dbf_hba_fsf_resp(char tag, int level, struct zfcp_fsf_req req)
	287	{
	288	if (level <= req->adapter->dbf->hba->level)
	289	zfcp_dbf_hba_fsf_res(tag, level, req);
	290	}
	291
	292	/**
	293	* zfcp_dbf_hba_fsf_response - trace event for request completion
	294	* @req: request that has been completed
	295	*/
	296	static inline
	297	void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req)
	298	{
	299	struct fsf_qtcb *qtcb = req->qtcb;
	300
	301	if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
	302	(qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
	303	zfcp_dbf_hba_fsf_resp("fs_perr", 1, req);
	304
	305	} else if (qtcb->header.fsf_status != FSF_GOOD) {
	306	zfcp_dbf_hba_fsf_resp("fs_ferr", 1, req);
	307
	308	} else if ((req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) \|\|
	309	(req->fsf_command == FSF_QTCB_OPEN_LUN)) {
	310	zfcp_dbf_hba_fsf_resp("fs_open", 4, req);
	311
	312	} else if (qtcb->header.log_length) {
	313	zfcp_dbf_hba_fsf_resp("fs_qtcb", 5, req);
	314
	315	} else {
	316	zfcp_dbf_hba_fsf_resp("fs_norm", 6, req);
	317	}
	318	}
	319
	320	static inline
	321	void _zfcp_dbf_scsi(char tag, int level, struct scsi_cmnd scmd,
	322	struct zfcp_fsf_req *req)
	323	{
	324	struct zfcp_adapter adapter = (struct zfcp_adapter )
	325	scmd->device->host->hostdata[0];
	326
	327	if (level <= adapter->dbf->scsi->level)
	328	zfcp_dbf_scsi(tag, level, scmd, req);
	329	}
	330
	331	/**
	332	* zfcp_dbf_scsi_result - trace event for SCSI command completion
	333	* @scmd: SCSI command pointer
	334	* @req: FSF request used to issue SCSI command
	335	*/
	336	static inline
	337	void zfcp_dbf_scsi_result(struct scsi_cmnd scmd, struct zfcp_fsf_req req)
	338	{
	339	if (scmd->result != 0)
	340	_zfcp_dbf_scsi("rsl_err", 3, scmd, req);
	341	else if (scmd->retries > 0)
	342	_zfcp_dbf_scsi("rsl_ret", 4, scmd, req);
	343	else
	344	_zfcp_dbf_scsi("rsl_nor", 6, scmd, req);
	345	}
	346
	347	/**
	348	* zfcp_dbf_scsi_fail_send - trace event for failure to send SCSI command
	349	* @scmd: SCSI command pointer
	350	*/
	351	static inline
	352	void zfcp_dbf_scsi_fail_send(struct scsi_cmnd *scmd)
	353	{
	354	_zfcp_dbf_scsi("rsl_fai", 4, scmd, NULL);
	355	}
	356
	357	/**
	358	* zfcp_dbf_scsi_abort - trace event for SCSI command abort
	359	* @tag: tag indicating success or failure of abort operation
	360	* @scmd: SCSI command to be aborted
	361	* @fsf_req: request containing abort (might be NULL)
	362	*/
	363	static inline
	364	void zfcp_dbf_scsi_abort(char tag, struct scsi_cmnd scmd,
	365	struct zfcp_fsf_req *fsf_req)
	366	{
	367	_zfcp_dbf_scsi(tag, 1, scmd, fsf_req);
	368	}
	369
	370	/**
	371	* zfcp_dbf_scsi_devreset - trace event for Logical Unit or Target Reset
	372	* @tag: tag indicating success or failure of reset operation
	373	* @scmnd: SCSI command which caused this error recovery
	374	* @flag: indicates type of reset (Target Reset, Logical Unit Reset)
	375	*/
	376	static inline
	377	void zfcp_dbf_scsi_devreset(char tag, struct scsi_cmnd scmnd, u8 flag)
	378	{
	379	char tmp_tag[ZFCP_DBF_TAG_LEN];
	380
	381	if (flag == FCP_TMF_TGT_RESET)
	382	memcpy(tmp_tag, "tr_", 3);
	383	else
	384	memcpy(tmp_tag, "lr_", 3);
	385
	386	memcpy(&tmp_tag[3], tag, 4);
	387	_zfcp_dbf_scsi(tmp_tag, 1, scmnd, NULL);
	388	}
	389
	390	#endif /* ZFCP_DBF_H */