[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
2b604c9b	1	/*
a54ca0f6 SS	2	* zfcp device driver
a54ca0f6 SS	3	* debug feature declarations
2b604c9b	4	*
efaebcb4	5	* Copyright IBM Corp. 2008, 2015
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
efaebcb4 SM	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
ae0904f6 SS	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 {
2b604c9b CS	33	u32 ready;
2b604c9b CS	34	u32 running;
2b604c9b CS	35	u8 want;
2b604c9b CS	36	u8 need;
ae0904f6 SS	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;
2b604c9b	53
ae0904f6 SS	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,
7337891f	62	};
2b604c9b	63
ae0904f6 SS	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 {
2b604c9b	78	u8 id;
ae0904f6 SS	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;
2b604c9b	86	union {
ae0904f6 SS	87	struct zfcp_dbf_rec_trigger trig;
ae0904f6 SS	88	struct zfcp_dbf_rec_running run;
2b604c9b	89	} u;
ae0904f6	90	} __packed;
2b604c9b	91
2c55b750 SS	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
a54ca0f6 SS	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];
2b604c9b	132	u32 fsf_status;
a54ca0f6	133	u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
8467dd46 SM	134	u32 port_handle;
8467dd46 SM	135	u32 lun_handle;
a54ca0f6	136	} __packed;
2b604c9b	137
a54ca0f6 SS	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 {
2b604c9b CS	147	u32 status_type;
2b604c9b CS	148	u32 status_subtype;
a54ca0f6 SS	149	u32 d_id;
	150	u64 lun;
	151	u64 queue_designator;
	152	} __packed;
2b604c9b	153
a54ca0f6 SS	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,
cb452149	164	ZFCP_DBF_HBA_BASIC = 4,
a54ca0f6	165	};
2b604c9b	166
a54ca0f6 SS	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;
2b604c9b	186	union {
a54ca0f6 SS	187	struct zfcp_dbf_hba_res res;
	188	struct zfcp_dbf_hba_uss uss;
	189	struct fsf_bit_error_payload be;
6bc473dd	190	} u;
a54ca0f6 SS	191	} __packed;
a54ca0f6 SS	192
250a1352 SS	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
a54ca0f6 SS	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 {
ea4a3a6a	242	u8 counter;
a54ca0f6	243	char area[ZFCP_DBF_TAG_LEN];
a54ca0f6 SS	244	u64 fsf_req_id;
	245	#define ZFCP_DBF_PAY_MAX_REC 0x100
	246	char data[ZFCP_DBF_PAY_MAX_REC];
	247	} __packed;
2b604c9b	248
ea4a3a6a SS	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	*/
d46f384a	267	struct zfcp_dbf {
a54ca0f6	268	debug_info_t *pay;
5771710b SS	269	debug_info_t *rec;
	270	debug_info_t *hba;
	271	debug_info_t *san;
	272	debug_info_t *scsi;
a54ca0f6	273	spinlock_t pay_lock;
5771710b SS	274	spinlock_t rec_lock;
	275	spinlock_t hba_lock;
	276	spinlock_t san_lock;
	277	spinlock_t scsi_lock;
ea4a3a6a	278	struct zfcp_dbf_pay pay_buf;
ae0904f6	279	struct zfcp_dbf_rec rec_buf;
a54ca0f6	280	struct zfcp_dbf_hba hba_buf;
2c55b750	281	struct zfcp_dbf_san san_buf;
250a1352	282	struct zfcp_dbf_scsi scsi_buf;
d46f384a CS	283	};
d46f384a CS	284
2e261af8	285	static inline
a54ca0f6	286	void zfcp_dbf_hba_fsf_resp(char tag, int level, struct zfcp_fsf_req req)
2e261af8	287	{
a54ca0f6	288	if (level <= req->adapter->dbf->hba->level)
909987d4	289	zfcp_dbf_hba_fsf_res(tag, level, req);
2e261af8 CS	290	}
	291
	292	/**
5771710b	293	* zfcp_dbf_hba_fsf_response - trace event for request completion
250a1352	294	* @req: request that has been completed
2e261af8	295	*/
a54ca0f6 SS	296	static inline
a54ca0f6 SS	297	void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req)
2e261af8	298	{
2e261af8 CS	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)) {
a54ca0f6	303	zfcp_dbf_hba_fsf_resp("fs_perr", 1, req);
2e261af8 CS	304
2e261af8 CS	305	} else if (qtcb->header.fsf_status != FSF_GOOD) {
a54ca0f6	306	zfcp_dbf_hba_fsf_resp("fs_ferr", 1, req);
2e261af8 CS	307
	308	} else if ((req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) \|\|
	309	(req->fsf_command == FSF_QTCB_OPEN_LUN)) {
a54ca0f6	310	zfcp_dbf_hba_fsf_resp("fs_open", 4, req);
2e261af8 CS	311
2e261af8 CS	312	} else if (qtcb->header.log_length) {
a54ca0f6	313	zfcp_dbf_hba_fsf_resp("fs_qtcb", 5, req);
2e261af8 CS	314
2e261af8 CS	315	} else {
a54ca0f6	316	zfcp_dbf_hba_fsf_resp("fs_norm", 6, req);
2e261af8	317	}
2e261af8 CS	318	}
2e261af8 CS	319
dcd20e23	320	static inline
250a1352 SS	321	void _zfcp_dbf_scsi(char tag, int level, struct scsi_cmnd scmd,
250a1352 SS	322	struct zfcp_fsf_req *req)
dcd20e23	323	{
250a1352 SS	324	struct zfcp_adapter adapter = (struct zfcp_adapter )
	325	scmd->device->host->hostdata[0];
	326
	327	if (level <= adapter->dbf->scsi->level)
909987d4	328	zfcp_dbf_scsi(tag, level, scmd, req);
dcd20e23 CS	329	}
	330
	331	/**
5771710b	332	* zfcp_dbf_scsi_result - trace event for SCSI command completion
dcd20e23	333	* @scmd: SCSI command pointer
ab72528a	334	* @req: FSF request used to issue SCSI command
dcd20e23 CS	335	*/
dcd20e23 CS	336	static inline
250a1352	337	void zfcp_dbf_scsi_result(struct scsi_cmnd scmd, struct zfcp_fsf_req req)
dcd20e23	338	{
ab72528a	339	if (scmd->result != 0)
250a1352	340	_zfcp_dbf_scsi("rsl_err", 3, scmd, req);
ab72528a	341	else if (scmd->retries > 0)
250a1352	342	_zfcp_dbf_scsi("rsl_ret", 4, scmd, req);
ab72528a	343	else
250a1352	344	_zfcp_dbf_scsi("rsl_nor", 6, scmd, req);
ab72528a CS	345	}
	346
	347	/**
	348	* zfcp_dbf_scsi_fail_send - trace event for failure to send SCSI command
ab72528a CS	349	* @scmd: SCSI command pointer
	350	*/
	351	static inline
250a1352	352	void zfcp_dbf_scsi_fail_send(struct scsi_cmnd *scmd)
ab72528a	353	{
250a1352	354	_zfcp_dbf_scsi("rsl_fai", 4, scmd, NULL);
dcd20e23 CS	355	}
	356
	357	/**
5771710b	358	* zfcp_dbf_scsi_abort - trace event for SCSI command abort
dcd20e23	359	* @tag: tag indicating success or failure of abort operation
dcd20e23	360	* @scmd: SCSI command to be aborted
250a1352	361	* @fsf_req: request containing abort (might be NULL)
dcd20e23 CS	362	*/
dcd20e23 CS	363	static inline
250a1352 SS	364	void zfcp_dbf_scsi_abort(char tag, struct scsi_cmnd scmd,
250a1352 SS	365	struct zfcp_fsf_req *fsf_req)
dcd20e23	366	{
250a1352	367	_zfcp_dbf_scsi(tag, 1, scmd, fsf_req);
dcd20e23 CS	368	}
	369
	370	/**
5771710b	371	* zfcp_dbf_scsi_devreset - trace event for Logical Unit or Target Reset
dcd20e23	372	* @tag: tag indicating success or failure of reset operation
b62a8d9b	373	* @scmnd: SCSI command which caused this error recovery
dcd20e23	374	* @flag: indicates type of reset (Target Reset, Logical Unit Reset)
dcd20e23 CS	375	*/
dcd20e23 CS	376	static inline
250a1352	377	void zfcp_dbf_scsi_devreset(char tag, struct scsi_cmnd scmnd, u8 flag)
dcd20e23	378	{
250a1352 SS	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);
b62a8d9b	385
250a1352 SS	386	memcpy(&tmp_tag[3], tag, 4);
250a1352 SS	387	_zfcp_dbf_scsi(tmp_tag, 1, scmnd, NULL);
dcd20e23 CS	388	}
dcd20e23 CS	389
2b604c9b	390	#endif /* ZFCP_DBF_H */