mirror of
https://github.com/torvalds/linux.git
synced 2024-11-28 07:01:32 +00:00
8e6a828566
Refactor direct debug level comparisons with the (internal) s390db->level member. Use the debug_level_enabled() function instead. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
384 lines
10 KiB
C
384 lines
10 KiB
C
/*
|
|
* 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 */
|