diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_scsi.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 661 |
1 files changed, 326 insertions, 335 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 7991ba1980ae..da59c4f0168f 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -116,6 +116,27 @@ lpfc_debug_save_dif(struct scsi_cmnd *cmnd) } /** + * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. + * @phba: Pointer to HBA object. + * @lpfc_cmd: lpfc scsi command object pointer. + * + * This function is called from the lpfc_prep_task_mgmt_cmd function to + * set the last bit in the response sge entry. + **/ +static void +lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, + struct lpfc_scsi_buf *lpfc_cmd) +{ + struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; + if (sgl) { + sgl += 1; + sgl->word2 = le32_to_cpu(sgl->word2); + bf_set(lpfc_sli4_sge_last, sgl, 1); + sgl->word2 = cpu_to_le32(sgl->word2); + } +} + +/** * lpfc_update_stats - Update statistical data for the command completion * @phba: Pointer to HBA object. * @lpfc_cmd: lpfc scsi command object pointer. @@ -1978,7 +1999,7 @@ lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, } /** - * lpfc_scsi_unprep_dma_buf_s3 - Un-map DMA mapping of SG-list for SLI3 dev + * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev * @phba: The HBA for which this call is being executed. * @psb: The scsi buffer which is going to be un-mapped. * @@ -1986,7 +2007,7 @@ lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, * field of @lpfc_cmd for device with SLI-3 interface spec. **/ static void -lpfc_scsi_unprep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) +lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) { /* * There are only two special cases to consider. (1) the scsi command @@ -2003,36 +2024,6 @@ lpfc_scsi_unprep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) } /** - * lpfc_scsi_unprep_dma_buf_s4 - Un-map DMA mapping of SG-list for SLI4 dev - * @phba: The Hba for which this call is being executed. - * @psb: The scsi buffer which is going to be un-mapped. - * - * This routine does DMA un-mapping of scatter gather list of scsi command - * field of @lpfc_cmd for device with SLI-4 interface spec. If we have to - * remove the sgl for this scsi buffer then we will do it here. For now - * we should be able to just call the sli3 unprep routine. - **/ -static void -lpfc_scsi_unprep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) -{ - lpfc_scsi_unprep_dma_buf_s3(phba, psb); -} - -/** - * lpfc_scsi_unprep_dma_buf - Wrapper function for unmap DMA mapping of SG-list - * @phba: The Hba for which this call is being executed. - * @psb: The scsi buffer which is going to be un-mapped. - * - * This routine does DMA un-mapping of scatter gather list of scsi command - * field of @lpfc_cmd for device with SLI-4 interface spec. - **/ -static void -lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) -{ - phba->lpfc_scsi_unprep_dma_buf(phba, psb); -} - -/** * lpfc_handler_fcp_err - FCP response handler * @vport: The virtual port for which this call is being executed. * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. @@ -2461,7 +2452,7 @@ lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) } /** - * lpfc_scsi_prep_cmnd_s3 - Convert scsi cmnd to FCP infor unit for SLI3 dev + * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit * @vport: The virtual port for which this call is being executed. * @lpfc_cmd: The scsi command which needs to send. * @pnode: Pointer to lpfc_nodelist. @@ -2470,7 +2461,7 @@ lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) * to transfer for device with SLI3 interface spec. **/ static void -lpfc_scsi_prep_cmnd_s3(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, +lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_nodelist *pnode) { struct lpfc_hba *phba = vport->phba; @@ -2558,46 +2549,7 @@ lpfc_scsi_prep_cmnd_s3(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, } /** - * lpfc_scsi_prep_cmnd_s4 - Convert scsi cmnd to FCP infor unit for SLI4 dev - * @vport: The virtual port for which this call is being executed. - * @lpfc_cmd: The scsi command which needs to send. - * @pnode: Pointer to lpfc_nodelist. - * - * This routine initializes fcp_cmnd and iocb data structure from scsi command - * to transfer for device with SLI4 interface spec. - **/ -static void -lpfc_scsi_prep_cmnd_s4(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, - struct lpfc_nodelist *pnode) -{ - /* - * The prep cmnd routines do not touch the sgl or its - * entries. We may not have to do anything different. - * I will leave this function in place until we can - * run some IO through the driver and determine if changes - * are needed. - */ - return lpfc_scsi_prep_cmnd_s3(vport, lpfc_cmd, pnode); -} - -/** - * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit - * @vport: The virtual port for which this call is being executed. - * @lpfc_cmd: The scsi command which needs to send. - * @pnode: Pointer to lpfc_nodelist. - * - * This routine wraps the actual convert SCSI cmnd function pointer from - * the lpfc_hba struct. - **/ -static inline void -lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, - struct lpfc_nodelist *pnode) -{ - vport->phba->lpfc_scsi_prep_cmnd(vport, lpfc_cmd, pnode); -} - -/** - * lpfc_scsi_prep_task_mgmt_cmnd_s3 - Convert SLI3 scsi TM cmd to FCP info unit + * lpfc_scsi_prep_task_mgmt_cmnd - Convert SLI3 scsi TM cmd to FCP info unit * @vport: The virtual port for which this call is being executed. * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. * @lun: Logical unit number. @@ -2611,7 +2563,7 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, * 1 - Success **/ static int -lpfc_scsi_prep_task_mgmt_cmd_s3(struct lpfc_vport *vport, +lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, unsigned int lun, uint8_t task_mgmt_cmd) @@ -2653,68 +2605,13 @@ lpfc_scsi_prep_task_mgmt_cmd_s3(struct lpfc_vport *vport, * The driver will provide the timeout mechanism. */ piocb->ulpTimeout = 0; - } else { + } else piocb->ulpTimeout = lpfc_cmd->timeout; - } - - return 1; -} - -/** - * lpfc_scsi_prep_task_mgmt_cmnd_s4 - Convert SLI4 scsi TM cmd to FCP info unit - * @vport: The virtual port for which this call is being executed. - * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. - * @lun: Logical unit number. - * @task_mgmt_cmd: SCSI task management command. - * - * This routine creates FCP information unit corresponding to @task_mgmt_cmd - * for device with SLI-4 interface spec. - * - * Return codes: - * 0 - Error - * 1 - Success - **/ -static int -lpfc_scsi_prep_task_mgmt_cmd_s4(struct lpfc_vport *vport, - struct lpfc_scsi_buf *lpfc_cmd, - unsigned int lun, - uint8_t task_mgmt_cmd) -{ - /* - * The prep cmnd routines do not touch the sgl or its - * entries. We may not have to do anything different. - * I will leave this function in place until we can - * run some IO through the driver and determine if changes - * are needed. - */ - return lpfc_scsi_prep_task_mgmt_cmd_s3(vport, lpfc_cmd, lun, - task_mgmt_cmd); -} -/** - * lpfc_scsi_prep_task_mgmt_cmnd - Wrapper func convert scsi TM cmd to FCP info - * @vport: The virtual port for which this call is being executed. - * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. - * @lun: Logical unit number. - * @task_mgmt_cmd: SCSI task management command. - * - * This routine wraps the actual convert SCSI TM to FCP information unit - * function pointer from the lpfc_hba struct. - * - * Return codes: - * 0 - Error - * 1 - Success - **/ -static inline int -lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, - struct lpfc_scsi_buf *lpfc_cmd, - unsigned int lun, - uint8_t task_mgmt_cmd) -{ - struct lpfc_hba *phba = vport->phba; + if (vport->phba->sli_rev == LPFC_SLI_REV4) + lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); - return phba->lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun, - task_mgmt_cmd); + return 1; } /** @@ -2730,23 +2627,19 @@ int lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) { + phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; + phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; + phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf; + switch (dev_grp) { case LPFC_PCI_DEV_LP: phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3; phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; - phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd_s3; - phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf_s3; - phba->lpfc_scsi_prep_task_mgmt_cmd = - lpfc_scsi_prep_task_mgmt_cmd_s3; phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; break; case LPFC_PCI_DEV_OC: phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4; phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; - phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd_s4; - phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf_s4; - phba->lpfc_scsi_prep_task_mgmt_cmd = - lpfc_scsi_prep_task_mgmt_cmd_s4; phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; break; default: @@ -2783,72 +2676,6 @@ lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, } /** - * lpfc_scsi_tgt_reset - Target reset handler - * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure - * @vport: The virtual port for which this call is being executed. - * @tgt_id: Target ID. - * @lun: Lun number. - * @rdata: Pointer to lpfc_rport_data. - * - * This routine issues a TARGET RESET iocb to reset a target with @tgt_id ID. - * - * Return Code: - * 0x2003 - Error - * 0x2002 - Success. - **/ -static int -lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport, - unsigned tgt_id, unsigned int lun, - struct lpfc_rport_data *rdata) -{ - struct lpfc_hba *phba = vport->phba; - struct lpfc_iocbq *iocbq; - struct lpfc_iocbq *iocbqrsp; - int ret; - int status; - - if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) - return FAILED; - - lpfc_cmd->rdata = rdata; - status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun, - FCP_TARGET_RESET); - if (!status) - return FAILED; - - iocbq = &lpfc_cmd->cur_iocbq; - iocbqrsp = lpfc_sli_get_iocbq(phba); - - if (!iocbqrsp) - return FAILED; - - /* Issue Target Reset to TGT <num> */ - lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, - "0702 Issue Target Reset to TGT %d Data: x%x x%x\n", - tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); - status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, - iocbq, iocbqrsp, lpfc_cmd->timeout); - if (status != IOCB_SUCCESS) { - if (status == IOCB_TIMEDOUT) { - iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; - ret = TIMEOUT_ERROR; - } else - ret = FAILED; - lpfc_cmd->status = IOSTAT_DRIVER_REJECT; - } else { - ret = SUCCESS; - lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; - lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; - if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && - (lpfc_cmd->result & IOERR_DRVR_MASK)) - lpfc_cmd->status = IOSTAT_DRIVER_REJECT; - } - - lpfc_sli_release_iocbq(phba, iocbqrsp); - return ret; -} - -/** * lpfc_info - Info entry point of scsi_host_template data structure * @host: The scsi host for which this call is being executed. * @@ -3228,156 +3055,334 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd) return ret; } +static char * +lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) +{ + switch (task_mgmt_cmd) { + case FCP_ABORT_TASK_SET: + return "ABORT_TASK_SET"; + case FCP_CLEAR_TASK_SET: + return "FCP_CLEAR_TASK_SET"; + case FCP_BUS_RESET: + return "FCP_BUS_RESET"; + case FCP_LUN_RESET: + return "FCP_LUN_RESET"; + case FCP_TARGET_RESET: + return "FCP_TARGET_RESET"; + case FCP_CLEAR_ACA: + return "FCP_CLEAR_ACA"; + case FCP_TERMINATE_TASK: + return "FCP_TERMINATE_TASK"; + default: + return "unknown"; + } +} + /** - * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point - * @cmnd: Pointer to scsi_cmnd data structure. + * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler + * @vport: The virtual port for which this call is being executed. + * @rdata: Pointer to remote port local data + * @tgt_id: Target ID of remote device. + * @lun_id: Lun number for the TMF + * @task_mgmt_cmd: type of TMF to send * - * This routine does a device reset by sending a TARGET_RESET task management - * command. + * This routine builds and sends a TMF (SCSI Task Mgmt Function) to + * a remote port. * - * Return code : - * 0x2003 - Error - * 0x2002 - Success + * Return Code: + * 0x2003 - Error + * 0x2002 - Success. **/ static int -lpfc_device_reset_handler(struct scsi_cmnd *cmnd) +lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, + unsigned tgt_id, unsigned int lun_id, + uint8_t task_mgmt_cmd) { - struct Scsi_Host *shost = cmnd->device->host; - struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; struct lpfc_hba *phba = vport->phba; struct lpfc_scsi_buf *lpfc_cmd; - struct lpfc_iocbq *iocbq, *iocbqrsp; - struct lpfc_rport_data *rdata = cmnd->device->hostdata; - struct lpfc_nodelist *pnode = rdata->pnode; - unsigned long later; - int ret = SUCCESS; + struct lpfc_iocbq *iocbq; + struct lpfc_iocbq *iocbqrsp; + int ret; int status; - int cnt; - struct lpfc_scsi_event_header scsi_event; - lpfc_block_error_handler(cmnd); - /* - * If target is not in a MAPPED state, delay the reset until - * target is rediscovered or devloss timeout expires. - */ - later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; - while (time_after(later, jiffies)) { - if (!pnode || !NLP_CHK_NODE_ACT(pnode)) - return FAILED; - if (pnode->nlp_state == NLP_STE_MAPPED_NODE) - break; - schedule_timeout_uninterruptible(msecs_to_jiffies(500)); - rdata = cmnd->device->hostdata; - if (!rdata) - break; - pnode = rdata->pnode; - } - - scsi_event.event_type = FC_REG_SCSI_EVENT; - scsi_event.subcategory = LPFC_EVENT_TGTRESET; - scsi_event.lun = 0; - memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); - memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); - - fc_host_post_vendor_event(shost, - fc_get_event_number(), - sizeof(scsi_event), - (char *)&scsi_event, - LPFC_NL_VENDOR_ID); - - if (!rdata || pnode->nlp_state != NLP_STE_MAPPED_NODE) { - lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, - "0721 LUN Reset rport " - "failure: msec x%x rdata x%p\n", - jiffies_to_msecs(jiffies - later), rdata); + if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) return FAILED; - } + lpfc_cmd = lpfc_get_scsi_buf(phba); if (lpfc_cmd == NULL) return FAILED; lpfc_cmd->timeout = 60; lpfc_cmd->rdata = rdata; - status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, - cmnd->device->lun, - FCP_TARGET_RESET); + status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, + task_mgmt_cmd); if (!status) { lpfc_release_scsi_buf(phba, lpfc_cmd); return FAILED; } - iocbq = &lpfc_cmd->cur_iocbq; - /* get a buffer for this IOCB command response */ + iocbq = &lpfc_cmd->cur_iocbq; iocbqrsp = lpfc_sli_get_iocbq(phba); if (iocbqrsp == NULL) { lpfc_release_scsi_buf(phba, lpfc_cmd); return FAILED; } + lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, - "0703 Issue target reset to TGT %d LUN %d " - "rpi x%x nlp_flag x%x\n", cmnd->device->id, - cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag); + "0702 Issue %s to TGT %d LUN %d " + "rpi x%x nlp_flag x%x\n", + lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, + rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); + status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, iocbq, iocbqrsp, lpfc_cmd->timeout); - if (status == IOCB_TIMEDOUT) { - iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; - ret = TIMEOUT_ERROR; - } else { - if (status != IOCB_SUCCESS) + if (status != IOCB_SUCCESS) { + if (status == IOCB_TIMEDOUT) { + iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; + ret = TIMEOUT_ERROR; + } else ret = FAILED; - lpfc_release_scsi_buf(phba, lpfc_cmd); - } - lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, - "0713 SCSI layer issued device reset (%d, %d) " - "return x%x status x%x result x%x\n", - cmnd->device->id, cmnd->device->lun, ret, - iocbqrsp->iocb.ulpStatus, + lpfc_cmd->status = IOSTAT_DRIVER_REJECT; + lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, + "0727 TMF %s to TGT %d LUN %d failed (%d, %d)\n", + lpfc_taskmgmt_name(task_mgmt_cmd), + tgt_id, lun_id, iocbqrsp->iocb.ulpStatus, iocbqrsp->iocb.un.ulpWord[4]); + } else + ret = SUCCESS; + lpfc_sli_release_iocbq(phba, iocbqrsp); - cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, cmnd->device->lun, - LPFC_CTX_TGT); + + if (ret != TIMEOUT_ERROR) + lpfc_release_scsi_buf(phba, lpfc_cmd); + + return ret; +} + +/** + * lpfc_chk_tgt_mapped - + * @vport: The virtual port to check on + * @cmnd: Pointer to scsi_cmnd data structure. + * + * This routine delays until the scsi target (aka rport) for the + * command exists (is present and logged in) or we declare it non-existent. + * + * Return code : + * 0x2003 - Error + * 0x2002 - Success + **/ +static int +lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) +{ + struct lpfc_rport_data *rdata = cmnd->device->hostdata; + struct lpfc_nodelist *pnode = rdata->pnode; + unsigned long later; + + /* + * If target is not in a MAPPED state, delay until + * target is rediscovered or devloss timeout expires. + */ + later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; + while (time_after(later, jiffies)) { + if (!pnode || !NLP_CHK_NODE_ACT(pnode)) + return FAILED; + if (pnode->nlp_state == NLP_STE_MAPPED_NODE) + return SUCCESS; + schedule_timeout_uninterruptible(msecs_to_jiffies(500)); + rdata = cmnd->device->hostdata; + if (!rdata) + return FAILED; + pnode = rdata->pnode; + } + if (!pnode || !NLP_CHK_NODE_ACT(pnode) || + (pnode->nlp_state != NLP_STE_MAPPED_NODE)) + return FAILED; + return SUCCESS; +} + +/** + * lpfc_reset_flush_io_context - + * @vport: The virtual port (scsi_host) for the flush context + * @tgt_id: If aborting by Target contect - specifies the target id + * @lun_id: If aborting by Lun context - specifies the lun id + * @context: specifies the context level to flush at. + * + * After a reset condition via TMF, we need to flush orphaned i/o + * contexts from the adapter. This routine aborts any contexts + * outstanding, then waits for their completions. The wait is + * bounded by devloss_tmo though. + * + * Return code : + * 0x2003 - Error + * 0x2002 - Success + **/ +static int +lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, + uint64_t lun_id, lpfc_ctx_cmd context) +{ + struct lpfc_hba *phba = vport->phba; + unsigned long later; + int cnt; + + cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); if (cnt) lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], - cmnd->device->id, cmnd->device->lun, - LPFC_CTX_TGT); + tgt_id, lun_id, context); later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; while (time_after(later, jiffies) && cnt) { schedule_timeout_uninterruptible(msecs_to_jiffies(20)); - cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, - cmnd->device->lun, LPFC_CTX_TGT); + cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); } if (cnt) { lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, - "0719 device reset I/O flush failure: " - "cnt x%x\n", cnt); - ret = FAILED; + "0724 I/O flush failure for context %s : cnt x%x\n", + ((context == LPFC_CTX_LUN) ? "LUN" : + ((context == LPFC_CTX_TGT) ? "TGT" : + ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), + cnt); + return FAILED; } - return ret; + return SUCCESS; +} + +/** + * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point + * @cmnd: Pointer to scsi_cmnd data structure. + * + * This routine does a device reset by sending a LUN_RESET task management + * command. + * + * Return code : + * 0x2003 - Error + * 0x2002 - Success + **/ +static int +lpfc_device_reset_handler(struct scsi_cmnd *cmnd) +{ + struct Scsi_Host *shost = cmnd->device->host; + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_rport_data *rdata = cmnd->device->hostdata; + struct lpfc_nodelist *pnode = rdata->pnode; + unsigned tgt_id = cmnd->device->id; + unsigned int lun_id = cmnd->device->lun; + struct lpfc_scsi_event_header scsi_event; + int status; + + lpfc_block_error_handler(cmnd); + + status = lpfc_chk_tgt_mapped(vport, cmnd); + if (status == FAILED) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, + "0721 Device Reset rport failure: rdata x%p\n", rdata); + return FAILED; + } + + scsi_event.event_type = FC_REG_SCSI_EVENT; + scsi_event.subcategory = LPFC_EVENT_LUNRESET; + scsi_event.lun = lun_id; + memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); + memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); + + fc_host_post_vendor_event(shost, fc_get_event_number(), + sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); + + status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, + FCP_LUN_RESET); + + lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, + "0713 SCSI layer issued Device Reset (%d, %d) " + "return x%x\n", tgt_id, lun_id, status); + + /* + * We have to clean up i/o as : they may be orphaned by the TMF; + * or if the TMF failed, they may be in an indeterminate state. + * So, continue on. + * We will report success if all the i/o aborts successfully. + */ + status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, + LPFC_CTX_LUN); + return status; +} + +/** + * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point + * @cmnd: Pointer to scsi_cmnd data structure. + * + * This routine does a target reset by sending a TARGET_RESET task management + * command. + * + * Return code : + * 0x2003 - Error + * 0x2002 - Success + **/ +static int +lpfc_target_reset_handler(struct scsi_cmnd *cmnd) +{ + struct Scsi_Host *shost = cmnd->device->host; + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_rport_data *rdata = cmnd->device->hostdata; + struct lpfc_nodelist *pnode = rdata->pnode; + unsigned tgt_id = cmnd->device->id; + unsigned int lun_id = cmnd->device->lun; + struct lpfc_scsi_event_header scsi_event; + int status; + + lpfc_block_error_handler(cmnd); + + status = lpfc_chk_tgt_mapped(vport, cmnd); + if (status == FAILED) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, + "0722 Target Reset rport failure: rdata x%p\n", rdata); + return FAILED; + } + + scsi_event.event_type = FC_REG_SCSI_EVENT; + scsi_event.subcategory = LPFC_EVENT_TGTRESET; + scsi_event.lun = 0; + memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); + memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); + + fc_host_post_vendor_event(shost, fc_get_event_number(), + sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); + + status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, + FCP_TARGET_RESET); + + lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, + "0723 SCSI layer issued Target Reset (%d, %d) " + "return x%x\n", tgt_id, lun_id, status); + + /* + * We have to clean up i/o as : they may be orphaned by the TMF; + * or if the TMF failed, they may be in an indeterminate state. + * So, continue on. + * We will report success if all the i/o aborts successfully. + */ + status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, + LPFC_CTX_TGT); + return status; } /** * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point * @cmnd: Pointer to scsi_cmnd data structure. * - * This routine does target reset to all target on @cmnd->device->host. + * This routine does target reset to all targets on @cmnd->device->host. + * This emulates Parallel SCSI Bus Reset Semantics. * - * Return Code: - * 0x2003 - Error - * 0x2002 - Success + * Return code : + * 0x2003 - Error + * 0x2002 - Success **/ static int lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) { struct Scsi_Host *shost = cmnd->device->host; struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; - struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp = NULL; - int match; - int ret = SUCCESS, status = SUCCESS, i; - int cnt; - struct lpfc_scsi_buf * lpfc_cmd; - unsigned long later; struct lpfc_scsi_event_header scsi_event; + int match; + int ret = SUCCESS, status, i; scsi_event.event_type = FC_REG_SCSI_EVENT; scsi_event.subcategory = LPFC_EVENT_BUSRESET; @@ -3385,13 +3390,11 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); - fc_host_post_vendor_event(shost, - fc_get_event_number(), - sizeof(scsi_event), - (char *)&scsi_event, - LPFC_NL_VENDOR_ID); + fc_host_post_vendor_event(shost, fc_get_event_number(), + sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); lpfc_block_error_handler(cmnd); + /* * Since the driver manages a single bus device, reset all * targets known to the driver. Should any target reset @@ -3414,16 +3417,11 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) spin_unlock_irq(shost->host_lock); if (!match) continue; - lpfc_cmd = lpfc_get_scsi_buf(phba); - if (lpfc_cmd) { - lpfc_cmd->timeout = 60; - status = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i, - cmnd->device->lun, - ndlp->rport->dd_data); - if (status != TIMEOUT_ERROR) - lpfc_release_scsi_buf(phba, lpfc_cmd); - } - if (!lpfc_cmd || status != SUCCESS) { + + status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data, + i, 0, FCP_TARGET_RESET); + + if (status != SUCCESS) { lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, "0700 Bus Reset on target %d failed\n", i); @@ -3431,25 +3429,16 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) } } /* - * All outstanding txcmplq I/Os should have been aborted by - * the targets. Unfortunately, some targets do not abide by - * this forcing the driver to double check. + * We have to clean up i/o as : they may be orphaned by the TMFs + * above; or if any of the TMFs failed, they may be in an + * indeterminate state. + * We will report success if all the i/o aborts successfully. */ - cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); - if (cnt) - lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], - 0, 0, LPFC_CTX_HOST); - later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; - while (time_after(later, jiffies) && cnt) { - schedule_timeout_uninterruptible(msecs_to_jiffies(20)); - cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); - } - if (cnt) { - lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, - "0715 Bus Reset I/O flush failure: " - "cnt x%x left x%x\n", cnt, i); + + status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); + if (status != SUCCESS) ret = FAILED; - } + lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); return ret; @@ -3582,7 +3571,8 @@ struct scsi_host_template lpfc_template = { .info = lpfc_info, .queuecommand = lpfc_queuecommand, .eh_abort_handler = lpfc_abort_handler, - .eh_device_reset_handler= lpfc_device_reset_handler, + .eh_device_reset_handler = lpfc_device_reset_handler, + .eh_target_reset_handler = lpfc_target_reset_handler, .eh_bus_reset_handler = lpfc_bus_reset_handler, .slave_alloc = lpfc_slave_alloc, .slave_configure = lpfc_slave_configure, @@ -3602,7 +3592,8 @@ struct scsi_host_template lpfc_vport_template = { .info = lpfc_info, .queuecommand = lpfc_queuecommand, .eh_abort_handler = lpfc_abort_handler, - .eh_device_reset_handler= lpfc_device_reset_handler, + .eh_device_reset_handler = lpfc_device_reset_handler, + .eh_target_reset_handler = lpfc_target_reset_handler, .eh_bus_reset_handler = lpfc_bus_reset_handler, .slave_alloc = lpfc_slave_alloc, .slave_configure = lpfc_slave_configure, |