diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_scsi.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 279 |
1 files changed, 278 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 7b17f52660b4..bd1867411821 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -32,6 +32,7 @@ #include "lpfc_version.h" #include "lpfc_hw.h" #include "lpfc_sli.h" +#include "lpfc_nl.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" @@ -42,6 +43,111 @@ #define LPFC_RESET_WAIT 2 #define LPFC_ABORT_WAIT 2 +/** + * lpfc_update_stats: Update statistical data for the command completion. + * @phba: Pointer to HBA object. + * @lpfc_cmd: lpfc scsi command object pointer. + * + * This function is called when there is a command completion and this + * function updates the statistical data for the command completion. + **/ +static void +lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) +{ + struct lpfc_rport_data *rdata = lpfc_cmd->rdata; + struct lpfc_nodelist *pnode = rdata->pnode; + struct scsi_cmnd *cmd = lpfc_cmd->pCmd; + unsigned long flags; + struct Scsi_Host *shost = cmd->device->host; + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + unsigned long latency; + int i; + + if (cmd->result) + return; + + spin_lock_irqsave(shost->host_lock, flags); + if (!vport->stat_data_enabled || + vport->stat_data_blocked || + !pnode->lat_data || + (phba->bucket_type == LPFC_NO_BUCKET)) { + spin_unlock_irqrestore(shost->host_lock, flags); + return; + } + latency = jiffies_to_msecs(jiffies - lpfc_cmd->start_time); + + if (phba->bucket_type == LPFC_LINEAR_BUCKET) { + i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ + phba->bucket_step; + if (i >= LPFC_MAX_BUCKET_COUNT) + i = LPFC_MAX_BUCKET_COUNT; + } else { + for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) + if (latency <= (phba->bucket_base + + ((1<<i)*phba->bucket_step))) + break; + } + + pnode->lat_data[i].cmd_count++; + spin_unlock_irqrestore(shost->host_lock, flags); +} + + +/** + * lpfc_send_sdev_queuedepth_change_event: Posts a queuedepth change + * event. + * @phba: Pointer to HBA context object. + * @vport: Pointer to vport object. + * @ndlp: Pointer to FC node associated with the target. + * @lun: Lun number of the scsi device. + * @old_val: Old value of the queue depth. + * @new_val: New value of the queue depth. + * + * This function sends an event to the mgmt application indicating + * there is a change in the scsi device queue depth. + **/ +static void +lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, + struct lpfc_vport *vport, + struct lpfc_nodelist *ndlp, + uint32_t lun, + uint32_t old_val, + uint32_t new_val) +{ + struct lpfc_fast_path_event *fast_path_evt; + unsigned long flags; + + fast_path_evt = lpfc_alloc_fast_evt(phba); + if (!fast_path_evt) + return; + + fast_path_evt->un.queue_depth_evt.scsi_event.event_type = + FC_REG_SCSI_EVENT; + fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = + LPFC_EVENT_VARQUEDEPTH; + + /* Report all luns with change in queue depth */ + fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; + if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { + memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, + &ndlp->nlp_portname, sizeof(struct lpfc_name)); + memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, + &ndlp->nlp_nodename, sizeof(struct lpfc_name)); + } + + fast_path_evt->un.queue_depth_evt.oldval = old_val; + fast_path_evt->un.queue_depth_evt.newval = new_val; + fast_path_evt->vport = vport; + + fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; + spin_lock_irqsave(&phba->hbalock, flags); + list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_worker_wake_up(phba); + + return; +} + /* * This function is called with no lock held when there is a resource * error in driver or in firmware. @@ -117,9 +223,10 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) struct lpfc_vport **vports; struct Scsi_Host *shost; struct scsi_device *sdev; - unsigned long new_queue_depth; + unsigned long new_queue_depth, old_queue_depth; unsigned long num_rsrc_err, num_cmd_success; int i; + struct lpfc_rport_data *rdata; num_rsrc_err = atomic_read(&phba->num_rsrc_err); num_cmd_success = atomic_read(&phba->num_cmd_success); @@ -137,6 +244,7 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) else new_queue_depth = sdev->queue_depth - new_queue_depth; + old_queue_depth = sdev->queue_depth; if (sdev->ordered_tags) scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, @@ -145,6 +253,13 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, new_queue_depth); + rdata = sdev->hostdata; + if (rdata) + lpfc_send_sdev_queuedepth_change_event( + phba, vports[i], + rdata->pnode, + sdev->lun, old_queue_depth, + new_queue_depth); } } lpfc_destroy_vport_work_array(phba, vports); @@ -159,6 +274,7 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) struct Scsi_Host *shost; struct scsi_device *sdev; int i; + struct lpfc_rport_data *rdata; vports = lpfc_create_vport_work_array(phba); if (vports != NULL) @@ -176,6 +292,14 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, sdev->queue_depth+1); + rdata = sdev->hostdata; + if (rdata) + lpfc_send_sdev_queuedepth_change_event( + phba, vports[i], + rdata->pnode, + sdev->lun, + sdev->queue_depth - 1, + sdev->queue_depth); } } lpfc_destroy_vport_work_array(phba, vports); @@ -466,6 +590,97 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) return 0; } +/** + * lpfc_send_scsi_error_event: Posts an event when there is SCSI error. + * @phba: Pointer to hba context object. + * @vport: Pointer to vport object. + * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. + * @rsp_iocb: Pointer to response iocb object which reported error. + * + * This function posts an event when there is a SCSI command reporting + * error from the scsi device. + **/ +static void +lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, + struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { + struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; + struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; + uint32_t resp_info = fcprsp->rspStatus2; + uint32_t scsi_status = fcprsp->rspStatus3; + uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; + struct lpfc_fast_path_event *fast_path_evt = NULL; + struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; + unsigned long flags; + + /* If there is queuefull or busy condition send a scsi event */ + if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || + (cmnd->result == SAM_STAT_BUSY)) { + fast_path_evt = lpfc_alloc_fast_evt(phba); + if (!fast_path_evt) + return; + fast_path_evt->un.scsi_evt.event_type = + FC_REG_SCSI_EVENT; + fast_path_evt->un.scsi_evt.subcategory = + (cmnd->result == SAM_STAT_TASK_SET_FULL) ? + LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; + fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; + memcpy(&fast_path_evt->un.scsi_evt.wwpn, + &pnode->nlp_portname, sizeof(struct lpfc_name)); + memcpy(&fast_path_evt->un.scsi_evt.wwnn, + &pnode->nlp_nodename, sizeof(struct lpfc_name)); + } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && + ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { + fast_path_evt = lpfc_alloc_fast_evt(phba); + if (!fast_path_evt) + return; + fast_path_evt->un.check_cond_evt.scsi_event.event_type = + FC_REG_SCSI_EVENT; + fast_path_evt->un.check_cond_evt.scsi_event.subcategory = + LPFC_EVENT_CHECK_COND; + fast_path_evt->un.check_cond_evt.scsi_event.lun = + cmnd->device->lun; + memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, + &pnode->nlp_portname, sizeof(struct lpfc_name)); + memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, + &pnode->nlp_nodename, sizeof(struct lpfc_name)); + fast_path_evt->un.check_cond_evt.sense_key = + cmnd->sense_buffer[2] & 0xf; + fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; + fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; + } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && + fcpi_parm && + ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || + ((scsi_status == SAM_STAT_GOOD) && + !(resp_info & (RESID_UNDER | RESID_OVER))))) { + /* + * If status is good or resid does not match with fcp_param and + * there is valid fcpi_parm, then there is a read_check error + */ + fast_path_evt = lpfc_alloc_fast_evt(phba); + if (!fast_path_evt) + return; + fast_path_evt->un.read_check_error.header.event_type = + FC_REG_FABRIC_EVENT; + fast_path_evt->un.read_check_error.header.subcategory = + LPFC_EVENT_FCPRDCHKERR; + memcpy(&fast_path_evt->un.read_check_error.header.wwpn, + &pnode->nlp_portname, sizeof(struct lpfc_name)); + memcpy(&fast_path_evt->un.read_check_error.header.wwnn, + &pnode->nlp_nodename, sizeof(struct lpfc_name)); + fast_path_evt->un.read_check_error.lun = cmnd->device->lun; + fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; + fast_path_evt->un.read_check_error.fcpiparam = + fcpi_parm; + } else + return; + + fast_path_evt->vport = vport; + spin_lock_irqsave(&phba->hbalock, flags); + list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_worker_wake_up(phba); + return; +} static void lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) { @@ -494,6 +709,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, uint32_t rsplen = 0; uint32_t logit = LOG_FCP | LOG_FCP_ERROR; + /* * If this is a task management command, there is no * scsi packet associated with this lpfc_cmd. The driver @@ -609,6 +825,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, out: cmnd->result = ScsiResult(host_status, scsi_status); + lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); } static void @@ -625,6 +842,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, struct scsi_device *sdev, *tmp_sdev; int depth = 0; unsigned long flags; + struct lpfc_fast_path_event *fast_path_evt; lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; lpfc_cmd->status = pIocbOut->iocb.ulpStatus; @@ -655,6 +873,30 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, case IOSTAT_NPORT_BSY: case IOSTAT_FABRIC_BSY: cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); + fast_path_evt = lpfc_alloc_fast_evt(phba); + if (!fast_path_evt) + break; + fast_path_evt->un.fabric_evt.event_type = + FC_REG_FABRIC_EVENT; + fast_path_evt->un.fabric_evt.subcategory = + (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? + LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; + if (pnode && NLP_CHK_NODE_ACT(pnode)) { + memcpy(&fast_path_evt->un.fabric_evt.wwpn, + &pnode->nlp_portname, + sizeof(struct lpfc_name)); + memcpy(&fast_path_evt->un.fabric_evt.wwnn, + &pnode->nlp_nodename, + sizeof(struct lpfc_name)); + } + fast_path_evt->vport = vport; + fast_path_evt->work_evt.evt = + LPFC_EVT_FASTPATH_MGMT_EVT; + spin_lock_irqsave(&phba->hbalock, flags); + list_add_tail(&fast_path_evt->work_evt.evt_listp, + &phba->work_list); + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_worker_wake_up(phba); break; case IOSTAT_LOCAL_REJECT: if (lpfc_cmd->result == IOERR_INVALID_RPI || @@ -687,6 +929,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, scsi_get_resid(cmd)); } + lpfc_update_stats(phba, lpfc_cmd); result = cmd->result; sdev = cmd->device; if (vport->cfg_max_scsicmpl_time && @@ -755,6 +998,9 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, pnode->last_ramp_up_time = jiffies; } } + lpfc_send_sdev_queuedepth_change_event(phba, vport, pnode, + 0xFFFFFFFF, + sdev->queue_depth - 1, sdev->queue_depth); } /* @@ -784,6 +1030,9 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, "0711 detected queue full - lun queue " "depth adjusted to %d.\n", depth); + lpfc_send_sdev_queuedepth_change_event(phba, vport, + pnode, 0xFFFFFFFF, + depth+1, depth); } } @@ -1112,6 +1361,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) goto out_host_busy; } + lpfc_cmd->start_time = jiffies; /* * Store the midlayer's command structure for the completion phase * and complete the command initialization. @@ -1280,6 +1530,7 @@ lpfc_device_reset_handler(struct scsi_cmnd *cmnd) int ret = SUCCESS; int status; int cnt; + struct lpfc_scsi_event_header scsi_event; lpfc_block_error_handler(cmnd); /* @@ -1298,6 +1549,19 @@ lpfc_device_reset_handler(struct scsi_cmnd *cmnd) 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, + SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX); + if (!rdata || pnode->nlp_state != NLP_STE_MAPPED_NODE) { lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, "0721 LUN Reset rport " @@ -1381,6 +1645,19 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) int cnt; struct lpfc_scsi_buf * lpfc_cmd; unsigned long later; + struct lpfc_scsi_event_header scsi_event; + + scsi_event.event_type = FC_REG_SCSI_EVENT; + scsi_event.subcategory = LPFC_EVENT_BUSRESET; + scsi_event.lun = 0; + 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, + SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX); lpfc_block_error_handler(cmnd); /* |