diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_dbf.h')
-rw-r--r-- | drivers/s390/scsi/zfcp_dbf.h | 497 |
1 files changed, 258 insertions, 239 deletions
diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h index 04081b1b62b4..714f087eb7a9 100644 --- a/drivers/s390/scsi/zfcp_dbf.h +++ b/drivers/s390/scsi/zfcp_dbf.h @@ -1,22 +1,8 @@ /* - * This file is part of the zfcp device driver for - * FCP adapters for IBM System z9 and zSeries. + * zfcp device driver + * debug feature declarations * - * 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. + * Copyright IBM Corp. 2008, 2010 */ #ifndef ZFCP_DBF_H @@ -27,322 +13,350 @@ #include "zfcp_fsf.h" #include "zfcp_def.h" -#define ZFCP_DBF_TAG_SIZE 4 -#define ZFCP_DBF_ID_SIZE 7 +#define ZFCP_DBF_TAG_LEN 7 #define ZFCP_DBF_INVALID_LUN 0xFFFFFFFFFFFFFFFFull -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; +/** + * 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; -}; - -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 ls; - u64 ref; - u64 action; - u64 wwpn; - u64 fcp_lun; -}; +} __packed; -struct zfcp_dbf_rec_record_action { - u32 status; - u32 step; - u64 action; - u64 fsf_req; +/** + * 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_record { +/** + * 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 id2[7]; + 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_record_action action; - struct zfcp_dbf_rec_record_thread thread; - struct zfcp_dbf_rec_record_target target; - struct zfcp_dbf_rec_record_trigger trigger; + struct zfcp_dbf_rec_trigger trig; + struct zfcp_dbf_rec_running run; } u; -}; +} __packed; -enum { - ZFCP_REC_DBF_ID_ACTION, - ZFCP_REC_DBF_ID_THREAD, - ZFCP_REC_DBF_ID_TARGET, - ZFCP_REC_DBF_ID_TRIGGER, +/** + * 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_hba_record_response { - u32 fsf_command; - u64 fsf_reqid; - u32 fsf_seqno; - u64 fsf_issued; - u32 fsf_prot_status; +/** 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_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; - u32 data_dir; - } 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)); + u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE]; +} __packed; -struct zfcp_dbf_hba_record_status { - u8 failed; +/** + * 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; - 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)); + u64 lun; + u64 queue_designator; +} __packed; -struct zfcp_dbf_san_record { - u8 tag[ZFCP_DBF_TAG_SIZE]; - u64 fsf_reqid; - u32 fsf_seqno; +/** + * 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, +}; + +/** + * 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_san_record_ct_request ct_req; - struct zfcp_dbf_san_record_ct_response ct_resp; - struct zfcp_dbf_san_record_els els; + struct zfcp_dbf_hba_res res; + struct zfcp_dbf_hba_uss uss; + struct fsf_bit_error_payload be; } u; -} __attribute__ ((packed)); +} __packed; -#define ZFCP_DBF_SAN_MAX_PAYLOAD 1024 +/** + * 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_record { - u8 tag[ZFCP_DBF_TAG_SIZE]; - u8 tag2[ZFCP_DBF_TAG_SIZE]; +/** + * 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; - u64 scsi_cmnd; -#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)); + 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_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; + 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(const char *tag2, int level, - struct zfcp_fsf_req *req, struct zfcp_dbf *dbf) +void zfcp_dbf_hba_fsf_resp(char *tag, int level, struct zfcp_fsf_req *req) { - if (level <= dbf->hba->level) - _zfcp_dbf_hba_fsf_response(tag2, level, req, dbf); + if (level <= req->adapter->dbf->hba->level) + zfcp_dbf_hba_fsf_res(tag, req); } /** * zfcp_dbf_hba_fsf_response - trace event for request completion - * @fsf_req: request that has been completed + * @req: request that has been completed */ -static inline void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req) +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); + zfcp_dbf_hba_fsf_resp("fs_perr", 1, req); } else if (qtcb->header.fsf_status != FSF_GOOD) { - zfcp_dbf_hba_fsf_resp("ferr", 1, req, dbf); + 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("open", 4, req, dbf); + zfcp_dbf_hba_fsf_resp("fs_open", 4, req); } else if (qtcb->header.log_length) { - zfcp_dbf_hba_fsf_resp("qtcb", 5, req, dbf); + zfcp_dbf_hba_fsf_resp("fs_qtcb", 5, req); } else { - zfcp_dbf_hba_fsf_resp("norm", 6, req, dbf); + zfcp_dbf_hba_fsf_resp("fs_norm", 6, req); } - } - -/** - * 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) +void _zfcp_dbf_scsi(char *tag, int level, struct scsi_cmnd *scmd, + struct zfcp_fsf_req *req) { - if (level <= dbf->scsi->level) - _zfcp_dbf_scsi(tag, tag2, level, dbf, scmd, req, old_id); + struct zfcp_adapter *adapter = (struct zfcp_adapter *) + scmd->device->host->hostdata[0]; + + if (level <= adapter->dbf->scsi->level) + zfcp_dbf_scsi(tag, scmd, req); } /** * zfcp_dbf_scsi_result - trace event for SCSI command completion - * @dbf: adapter dbf trace * @scmd: SCSI command pointer * @req: FSF request used to issue SCSI command */ static inline -void zfcp_dbf_scsi_result(struct zfcp_dbf *dbf, struct scsi_cmnd *scmd, - struct zfcp_fsf_req *req) +void zfcp_dbf_scsi_result(struct scsi_cmnd *scmd, struct zfcp_fsf_req *req) { if (scmd->result != 0) - zfcp_dbf_scsi("rslt", "erro", 3, dbf, scmd, req, 0); + _zfcp_dbf_scsi("rsl_err", 3, scmd, req); else if (scmd->retries > 0) - zfcp_dbf_scsi("rslt", "retr", 4, dbf, scmd, req, 0); + _zfcp_dbf_scsi("rsl_ret", 4, scmd, req); else - zfcp_dbf_scsi("rslt", "norm", 6, dbf, scmd, req, 0); + _zfcp_dbf_scsi("rsl_nor", 6, scmd, req); } /** * zfcp_dbf_scsi_fail_send - trace event for failure to send SCSI command - * @dbf: adapter dbf trace * @scmd: SCSI command pointer */ static inline -void zfcp_dbf_scsi_fail_send(struct zfcp_dbf *dbf, struct scsi_cmnd *scmd) +void zfcp_dbf_scsi_fail_send(struct scsi_cmnd *scmd) { - zfcp_dbf_scsi("rslt", "fail", 4, dbf, scmd, NULL, 0); + _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 - * @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 + * @fsf_req: request containing abort (might be NULL) */ 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) +void zfcp_dbf_scsi_abort(char *tag, struct scsi_cmnd *scmd, + struct zfcp_fsf_req *fsf_req) { - zfcp_dbf_scsi("abrt", tag, 1, dbf, scmd, new_req, old_id); + _zfcp_dbf_scsi(tag, 1, scmd, fsf_req); } /** @@ -352,12 +366,17 @@ void zfcp_dbf_scsi_abort(const char *tag, struct zfcp_dbf *dbf, * @flag: indicates type of reset (Target Reset, Logical Unit Reset) */ static inline -void zfcp_dbf_scsi_devreset(const char *tag, struct scsi_cmnd *scmnd, u8 flag) +void zfcp_dbf_scsi_devreset(char *tag, struct scsi_cmnd *scmnd, u8 flag) { - struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device); + char tmp_tag[ZFCP_DBF_TAG_LEN]; + + if (flag == FCP_TMF_TGT_RESET) + memcpy(tmp_tag, "tr_", 3); + else + memcpy(tmp_tag, "lr_", 3); - zfcp_dbf_scsi(flag == FCP_TMF_TGT_RESET ? "trst" : "lrst", tag, 1, - zfcp_sdev->port->adapter->dbf, scmnd, NULL, 0); + memcpy(&tmp_tag[3], tag, 4); + _zfcp_dbf_scsi(tmp_tag, 1, scmnd, NULL); } #endif /* ZFCP_DBF_H */ |