[deliverable/linux.git] / drivers / s390 / scsi / zfcp_dbf.h

/*
 * zfcp device driver
 * debug feature declarations
 *
 * Copyright IBM Corp. 2008, 2010
 */

#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

/**
 * 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];
} __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 (debug_level_enabled(req->adapter->dbf->hba, level))
		zfcp_dbf_hba_fsf_res(tag, 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 (debug_level_enabled(adapter->dbf->scsi, level))
		zfcp_dbf_scsi(tag, 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
2b604c9b	1	/*
a54ca0f6 SS	2	* zfcp device driver
a54ca0f6 SS	3	* debug feature declarations
2b604c9b	4	*
a54ca0f6	5	* Copyright IBM Corp. 2008, 2010
2b604c9b CS	6	*/
	7
	8	#ifndef ZFCP_DBF_H
	9	#define ZFCP_DBF_H
	10
4318e08c	11	#include <scsi/fc/fc_fcp.h>
dcd20e23	12	#include "zfcp_ext.h"
2b604c9b	13	#include "zfcp_fsf.h"
dcd20e23	14	#include "zfcp_def.h"
2b604c9b	15
ae0904f6	16	#define ZFCP_DBF_TAG_LEN 7
2b604c9b	17
d21e9daa CS	18	#define ZFCP_DBF_INVALID_LUN 0xFFFFFFFFFFFFFFFFull
d21e9daa CS	19
ae0904f6 SS	20	/**
	21	* struct zfcp_dbf_rec_trigger - trace record for triggered recovery action
	22	* @ready: number of ready recovery actions
	23	* @running: number of running recovery actions
	24	* @want: wanted recovery action
	25	* @need: needed recovery action
	26	*/
	27	struct zfcp_dbf_rec_trigger {
2b604c9b CS	28	u32 ready;
2b604c9b CS	29	u32 running;
2b604c9b CS	30	u8 want;
2b604c9b CS	31	u8 need;
ae0904f6 SS	32	} __packed;
	33
	34	/**
	35	* struct zfcp_dbf_rec_running - trace record for running recovery
	36	* @fsf_req_id: request id for fsf requests
	37	* @rec_status: status of the fsf request
	38	* @rec_step: current step of the recovery action
	39	* rec_count: recovery counter
	40	*/
	41	struct zfcp_dbf_rec_running {
	42	u64 fsf_req_id;
	43	u32 rec_status;
	44	u16 rec_step;
	45	u8 rec_action;
	46	u8 rec_count;
	47	} __packed;
2b604c9b	48
ae0904f6 SS	49	/**
	50	* enum zfcp_dbf_rec_id - recovery trace record id
	51	* @ZFCP_DBF_REC_TRIG: triggered recovery identifier
	52	* @ZFCP_DBF_REC_RUN: running recovery identifier
	53	*/
	54	enum zfcp_dbf_rec_id {
	55	ZFCP_DBF_REC_TRIG = 1,
	56	ZFCP_DBF_REC_RUN = 2,
7337891f	57	};
2b604c9b	58
ae0904f6 SS	59	/**
	60	* struct zfcp_dbf_rec - trace record for error recovery actions
	61	* @id: unique number of recovery record type
	62	* @tag: identifier string specifying the location of initiation
	63	* @lun: logical unit number
	64	* @wwpn: word wide port number
	65	* @d_id: destination ID
	66	* @adapter_status: current status of the adapter
	67	* @port_status: current status of the port
	68	* @lun_status: current status of the lun
	69	* @u.trig: structure zfcp_dbf_rec_trigger
	70	* @u.run: structure zfcp_dbf_rec_running
	71	*/
	72	struct zfcp_dbf_rec {
2b604c9b	73	u8 id;
ae0904f6 SS	74	char tag[ZFCP_DBF_TAG_LEN];
	75	u64 lun;
	76	u64 wwpn;
	77	u32 d_id;
	78	u32 adapter_status;
	79	u32 port_status;
	80	u32 lun_status;
2b604c9b	81	union {
ae0904f6 SS	82	struct zfcp_dbf_rec_trigger trig;
ae0904f6 SS	83	struct zfcp_dbf_rec_running run;
2b604c9b	84	} u;
ae0904f6	85	} __packed;
2b604c9b	86
2c55b750 SS	87	/**
	88	* enum zfcp_dbf_san_id - SAN trace record identifier
	89	* @ZFCP_DBF_SAN_REQ: request trace record id
	90	* @ZFCP_DBF_SAN_RES: response trace record id
	91	* @ZFCP_DBF_SAN_ELS: extended link service record id
	92	*/
	93	enum zfcp_dbf_san_id {
	94	ZFCP_DBF_SAN_REQ = 1,
	95	ZFCP_DBF_SAN_RES = 2,
	96	ZFCP_DBF_SAN_ELS = 3,
	97	};
	98
	99	/** struct zfcp_dbf_san - trace record for SAN requests and responses
	100	* @id: unique number of recovery record type
	101	* @tag: identifier string specifying the location of initiation
	102	* @fsf_req_id: request id for fsf requests
	103	* @payload: unformatted information related to request/response
	104	* @d_id: destination id
	105	*/
	106	struct zfcp_dbf_san {
	107	u8 id;
	108	char tag[ZFCP_DBF_TAG_LEN];
	109	u64 fsf_req_id;
	110	u32 d_id;
	111	#define ZFCP_DBF_SAN_MAX_PAYLOAD (FC_CT_HDR_LEN + 32)
	112	char payload[ZFCP_DBF_SAN_MAX_PAYLOAD];
	113	} __packed;
	114
a54ca0f6 SS	115	/**
	116	* struct zfcp_dbf_hba_res - trace record for hba responses
	117	* @req_issued: timestamp when request was issued
	118	* @prot_status: protocol status
	119	* @prot_status_qual: protocol status qualifier
	120	* @fsf_status: fsf status
	121	* @fsf_status_qual: fsf status qualifier
	122	*/
	123	struct zfcp_dbf_hba_res {
	124	u64 req_issued;
	125	u32 prot_status;
	126	u8 prot_status_qual[FSF_PROT_STATUS_QUAL_SIZE];
2b604c9b	127	u32 fsf_status;
a54ca0f6 SS	128	u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
a54ca0f6 SS	129	} __packed;
2b604c9b	130
a54ca0f6 SS	131	/**
	132	* struct zfcp_dbf_hba_uss - trace record for unsolicited status
	133	* @status_type: type of unsolicited status
	134	* @status_subtype: subtype of unsolicited status
	135	* @d_id: destination ID
	136	* @lun: logical unit number
	137	* @queue_designator: queue designator
	138	*/
	139	struct zfcp_dbf_hba_uss {
2b604c9b CS	140	u32 status_type;
2b604c9b CS	141	u32 status_subtype;
a54ca0f6 SS	142	u32 d_id;
	143	u64 lun;
	144	u64 queue_designator;
	145	} __packed;
2b604c9b	146
a54ca0f6 SS	147	/**
	148	* enum zfcp_dbf_hba_id - HBA trace record identifier
	149	* @ZFCP_DBF_HBA_RES: response trace record
	150	* @ZFCP_DBF_HBA_USS: unsolicited status trace record
	151	* @ZFCP_DBF_HBA_BIT: bit error trace record
	152	*/
	153	enum zfcp_dbf_hba_id {
	154	ZFCP_DBF_HBA_RES = 1,
	155	ZFCP_DBF_HBA_USS = 2,
	156	ZFCP_DBF_HBA_BIT = 3,
cb452149	157	ZFCP_DBF_HBA_BASIC = 4,
a54ca0f6	158	};
2b604c9b	159
a54ca0f6 SS	160	/**
	161	* struct zfcp_dbf_hba - common trace record for HBA records
	162	* @id: unique number of recovery record type
	163	* @tag: identifier string specifying the location of initiation
	164	* @fsf_req_id: request id for fsf requests
	165	* @fsf_req_status: status of fsf request
	166	* @fsf_cmd: fsf command
	167	* @fsf_seq_no: fsf sequence number
	168	* @pl_len: length of payload stored as zfcp_dbf_pay
	169	* @u: record type specific data
	170	*/
	171	struct zfcp_dbf_hba {
	172	u8 id;
	173	char tag[ZFCP_DBF_TAG_LEN];
	174	u64 fsf_req_id;
	175	u32 fsf_req_status;
	176	u32 fsf_cmd;
	177	u32 fsf_seq_no;
	178	u16 pl_len;
2b604c9b	179	union {
a54ca0f6 SS	180	struct zfcp_dbf_hba_res res;
	181	struct zfcp_dbf_hba_uss uss;
	182	struct fsf_bit_error_payload be;
6bc473dd	183	} u;
a54ca0f6 SS	184	} __packed;
a54ca0f6 SS	185
250a1352 SS	186	/**
	187	* enum zfcp_dbf_scsi_id - scsi trace record identifier
	188	* @ZFCP_DBF_SCSI_CMND: scsi command trace record
	189	*/
	190	enum zfcp_dbf_scsi_id {
	191	ZFCP_DBF_SCSI_CMND = 1,
	192	};
	193
	194	/**
	195	* struct zfcp_dbf_scsi - common trace record for SCSI records
	196	* @id: unique number of recovery record type
	197	* @tag: identifier string specifying the location of initiation
	198	* @scsi_id: scsi device id
	199	* @scsi_lun: scsi device logical unit number
	200	* @scsi_result: scsi result
	201	* @scsi_retries: current retry number of scsi request
	202	* @scsi_allowed: allowed retries
	203	* @fcp_rsp_info: FCP response info
	204	* @scsi_opcode: scsi opcode
	205	* @fsf_req_id: request id of fsf request
	206	* @host_scribble: LLD specific data attached to SCSI request
	207	* @pl_len: length of paload stored as zfcp_dbf_pay
	208	* @fsf_rsp: response for fsf request
	209	*/
	210	struct zfcp_dbf_scsi {
	211	u8 id;
	212	char tag[ZFCP_DBF_TAG_LEN];
	213	u32 scsi_id;
	214	u32 scsi_lun;
	215	u32 scsi_result;
	216	u8 scsi_retries;
	217	u8 scsi_allowed;
	218	u8 fcp_rsp_info;
	219	#define ZFCP_DBF_SCSI_OPCODE 16
	220	u8 scsi_opcode[ZFCP_DBF_SCSI_OPCODE];
	221	u64 fsf_req_id;
	222	u64 host_scribble;
	223	u16 pl_len;
	224	struct fcp_resp_with_ext fcp_rsp;
	225	} __packed;
	226
a54ca0f6 SS	227	/**
	228	* struct zfcp_dbf_pay - trace record for unformatted payload information
	229	* @area: area this record is originated from
	230	* @counter: ascending record number
	231	* @fsf_req_id: request id of fsf request
	232	* @data: unformatted data
	233	*/
	234	struct zfcp_dbf_pay {
ea4a3a6a	235	u8 counter;
a54ca0f6	236	char area[ZFCP_DBF_TAG_LEN];
a54ca0f6 SS	237	u64 fsf_req_id;
	238	#define ZFCP_DBF_PAY_MAX_REC 0x100
	239	char data[ZFCP_DBF_PAY_MAX_REC];
	240	} __packed;
2b604c9b	241
ea4a3a6a SS	242	/**
	243	* struct zfcp_dbf - main dbf trace structure
	244	* @pay: reference to payload trace area
	245	* @rec: reference to recovery trace area
	246	* @hba: reference to hba trace area
	247	* @san: reference to san trace area
	248	* @scsi: reference to scsi trace area
	249	* @pay_lock: lock protecting payload trace buffer
	250	* @rec_lock: lock protecting recovery trace buffer
	251	* @hba_lock: lock protecting hba trace buffer
	252	* @san_lock: lock protecting san trace buffer
	253	* @scsi_lock: lock protecting scsi trace buffer
	254	* @pay_buf: pre-allocated buffer for payload
	255	* @rec_buf: pre-allocated buffer for recovery
	256	* @hba_buf: pre-allocated buffer for hba
	257	* @san_buf: pre-allocated buffer for san
	258	* @scsi_buf: pre-allocated buffer for scsi
	259	*/
d46f384a	260	struct zfcp_dbf {
a54ca0f6	261	debug_info_t *pay;
5771710b SS	262	debug_info_t *rec;
	263	debug_info_t *hba;
	264	debug_info_t *san;
	265	debug_info_t *scsi;
a54ca0f6	266	spinlock_t pay_lock;
5771710b SS	267	spinlock_t rec_lock;
	268	spinlock_t hba_lock;
	269	spinlock_t san_lock;
	270	spinlock_t scsi_lock;
ea4a3a6a	271	struct zfcp_dbf_pay pay_buf;
ae0904f6	272	struct zfcp_dbf_rec rec_buf;
a54ca0f6	273	struct zfcp_dbf_hba hba_buf;
2c55b750	274	struct zfcp_dbf_san san_buf;
250a1352	275	struct zfcp_dbf_scsi scsi_buf;
d46f384a CS	276	};
d46f384a CS	277
2e261af8	278	static inline
a54ca0f6	279	void zfcp_dbf_hba_fsf_resp(char tag, int level, struct zfcp_fsf_req req)
2e261af8	280	{
8e6a8285	281	if (debug_level_enabled(req->adapter->dbf->hba, level))
a54ca0f6	282	zfcp_dbf_hba_fsf_res(tag, req);
2e261af8 CS	283	}
	284
	285	/**
5771710b	286	* zfcp_dbf_hba_fsf_response - trace event for request completion
250a1352	287	* @req: request that has been completed
2e261af8	288	*/
a54ca0f6 SS	289	static inline
a54ca0f6 SS	290	void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req)
2e261af8	291	{
2e261af8 CS	292	struct fsf_qtcb *qtcb = req->qtcb;
	293
	294	if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
	295	(qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
a54ca0f6	296	zfcp_dbf_hba_fsf_resp("fs_perr", 1, req);
2e261af8 CS	297
2e261af8 CS	298	} else if (qtcb->header.fsf_status != FSF_GOOD) {
a54ca0f6	299	zfcp_dbf_hba_fsf_resp("fs_ferr", 1, req);
2e261af8 CS	300
	301	} else if ((req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) \|\|
	302	(req->fsf_command == FSF_QTCB_OPEN_LUN)) {
a54ca0f6	303	zfcp_dbf_hba_fsf_resp("fs_open", 4, req);
2e261af8 CS	304
2e261af8 CS	305	} else if (qtcb->header.log_length) {
a54ca0f6	306	zfcp_dbf_hba_fsf_resp("fs_qtcb", 5, req);
2e261af8 CS	307
2e261af8 CS	308	} else {
a54ca0f6	309	zfcp_dbf_hba_fsf_resp("fs_norm", 6, req);
2e261af8	310	}
2e261af8 CS	311	}
2e261af8 CS	312
dcd20e23	313	static inline
250a1352 SS	314	void _zfcp_dbf_scsi(char tag, int level, struct scsi_cmnd scmd,
250a1352 SS	315	struct zfcp_fsf_req *req)
dcd20e23	316	{
250a1352 SS	317	struct zfcp_adapter adapter = (struct zfcp_adapter )
	318	scmd->device->host->hostdata[0];
	319
8e6a8285	320	if (debug_level_enabled(adapter->dbf->scsi, level))
250a1352	321	zfcp_dbf_scsi(tag, scmd, req);
dcd20e23 CS	322	}
	323
	324	/**
5771710b	325	* zfcp_dbf_scsi_result - trace event for SCSI command completion
dcd20e23	326	* @scmd: SCSI command pointer
ab72528a	327	* @req: FSF request used to issue SCSI command
dcd20e23 CS	328	*/
dcd20e23 CS	329	static inline
250a1352	330	void zfcp_dbf_scsi_result(struct scsi_cmnd scmd, struct zfcp_fsf_req req)
dcd20e23	331	{
ab72528a	332	if (scmd->result != 0)
250a1352	333	_zfcp_dbf_scsi("rsl_err", 3, scmd, req);
ab72528a	334	else if (scmd->retries > 0)
250a1352	335	_zfcp_dbf_scsi("rsl_ret", 4, scmd, req);
ab72528a	336	else
250a1352	337	_zfcp_dbf_scsi("rsl_nor", 6, scmd, req);
ab72528a CS	338	}
	339
	340	/**
	341	* zfcp_dbf_scsi_fail_send - trace event for failure to send SCSI command
ab72528a CS	342	* @scmd: SCSI command pointer
	343	*/
	344	static inline
250a1352	345	void zfcp_dbf_scsi_fail_send(struct scsi_cmnd *scmd)
ab72528a	346	{
250a1352	347	_zfcp_dbf_scsi("rsl_fai", 4, scmd, NULL);
dcd20e23 CS	348	}
	349
	350	/**
5771710b	351	* zfcp_dbf_scsi_abort - trace event for SCSI command abort
dcd20e23	352	* @tag: tag indicating success or failure of abort operation
dcd20e23	353	* @scmd: SCSI command to be aborted
250a1352	354	* @fsf_req: request containing abort (might be NULL)
dcd20e23 CS	355	*/
dcd20e23 CS	356	static inline
250a1352 SS	357	void zfcp_dbf_scsi_abort(char tag, struct scsi_cmnd scmd,
250a1352 SS	358	struct zfcp_fsf_req *fsf_req)
dcd20e23	359	{
250a1352	360	_zfcp_dbf_scsi(tag, 1, scmd, fsf_req);
dcd20e23 CS	361	}
	362
	363	/**
5771710b	364	* zfcp_dbf_scsi_devreset - trace event for Logical Unit or Target Reset
dcd20e23	365	* @tag: tag indicating success or failure of reset operation
b62a8d9b	366	* @scmnd: SCSI command which caused this error recovery
dcd20e23	367	* @flag: indicates type of reset (Target Reset, Logical Unit Reset)
dcd20e23 CS	368	*/
dcd20e23 CS	369	static inline
250a1352	370	void zfcp_dbf_scsi_devreset(char tag, struct scsi_cmnd scmnd, u8 flag)
dcd20e23	371	{
250a1352 SS	372	char tmp_tag[ZFCP_DBF_TAG_LEN];
	373
	374	if (flag == FCP_TMF_TGT_RESET)
	375	memcpy(tmp_tag, "tr_", 3);
	376	else
	377	memcpy(tmp_tag, "lr_", 3);
b62a8d9b	378
250a1352 SS	379	memcpy(&tmp_tag[3], tag, 4);
250a1352 SS	380	_zfcp_dbf_scsi(tmp_tag, 1, scmnd, NULL);
dcd20e23 CS	381	}
dcd20e23 CS	382
2b604c9b	383	#endif /* ZFCP_DBF_H */