1 files changed, 463 insertions, 51 deletions

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 1bcebbd3dfa..bd186741182 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);
@@ -183,6 +307,35 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba)
 	atomic_set(&phba->num_cmd_success, 0);
 }
 
+/**
+ * lpfc_scsi_dev_block: set all scsi hosts to block state.
+ * @phba: Pointer to HBA context object.
+ *
+ * This function walks vport list and set each SCSI host to block state
+ * by invoking fc_remote_port_delete() routine. This function is invoked
+ * with EEH when device's PCI slot has been permanently disabled.
+ **/
+void
+lpfc_scsi_dev_block(struct lpfc_hba *phba)
+{
+	struct lpfc_vport **vports;
+	struct Scsi_Host  *shost;
+	struct scsi_device *sdev;
+	struct fc_rport *rport;
+	int i;
+
+	vports = lpfc_create_vport_work_array(phba);
+	if (vports != NULL)
+		for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+			shost = lpfc_shost_from_vport(vports[i]);
+			shost_for_each_device(sdev, shost) {
+				rport = starget_to_rport(scsi_target(sdev));
+				fc_remote_port_delete(rport);
+			}
+		}
+	lpfc_destroy_vport_work_array(phba, vports);
+}
+
 /*
  * This routine allocates a scsi buffer, which contains all the necessary
  * information needed to initiate a SCSI I/O.  The non-DMAable buffer region
@@ -198,7 +351,9 @@ lpfc_new_scsi_buf(struct lpfc_vport *vport)
 	struct lpfc_scsi_buf *psb;
 	struct ulp_bde64 *bpl;
 	IOCB_t *iocb;
-	dma_addr_t pdma_phys;
+	dma_addr_t pdma_phys_fcp_cmd;
+	dma_addr_t pdma_phys_fcp_rsp;
+	dma_addr_t pdma_phys_bpl;
 	uint16_t iotag;
 
 	psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
@@ -238,40 +393,60 @@ lpfc_new_scsi_buf(struct lpfc_vport *vport)
 
 	/* Initialize local short-hand pointers. */
 	bpl = psb->fcp_bpl;
-	pdma_phys = psb->dma_handle;
+	pdma_phys_fcp_cmd = psb->dma_handle;
+	pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
+	pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) +
+			sizeof(struct fcp_rsp);
 
 	/*
 	 * The first two bdes are the FCP_CMD and FCP_RSP.  The balance are sg
 	 * list bdes.  Initialize the first two and leave the rest for
 	 * queuecommand.
 	 */
-	bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys));
-	bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys));
-	bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd);
-	bpl->tus.f.bdeFlags = BUFF_USE_CMND;
-	bpl->tus.w = le32_to_cpu(bpl->tus.w);
-	bpl++;
+	bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
+	bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
+	bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
+	bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+	bpl[0].tus.w = le32_to_cpu(bpl->tus.w);
 
 	/* Setup the physical region for the FCP RSP */
-	pdma_phys += sizeof (struct fcp_cmnd);
-	bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys));
-	bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys));
-	bpl->tus.f.bdeSize = sizeof (struct fcp_rsp);
-	bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV);
-	bpl->tus.w = le32_to_cpu(bpl->tus.w);
+	bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
+	bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
+	bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
+	bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+	bpl[1].tus.w = le32_to_cpu(bpl->tus.w);
 
 	/*
 	 * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf,
 	 * initialize it with all known data now.
 	 */
-	pdma_phys += (sizeof (struct fcp_rsp));
 	iocb = &psb->cur_iocbq.iocb;
 	iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
-	iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys);
-	iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys);
-	iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
-	iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL;
-	iocb->ulpBdeCount = 1;
+	if (phba->sli_rev == 3) {
+		/* fill in immediate fcp command BDE */
+		iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
+		iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
+		iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
+						       unsli3.fcp_ext.icd);
+		iocb->un.fcpi64.bdl.addrHigh = 0;
+		iocb->ulpBdeCount = 0;
+		iocb->ulpLe = 0;
+		/* fill in responce BDE */
+		iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+		iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
+						sizeof(struct fcp_rsp);
+		iocb->unsli3.fcp_ext.rbde.addrLow =
+						putPaddrLow(pdma_phys_fcp_rsp);
+		iocb->unsli3.fcp_ext.rbde.addrHigh =
+						putPaddrHigh(pdma_phys_fcp_rsp);
+	} else {
+		iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+		iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
+		iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_bpl);
+		iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_bpl);
+		iocb->ulpBdeCount = 1;
+		iocb->ulpLe = 1;
+	}
 	iocb->ulpClass = CLASS3;
 
 	return psb;
@@ -313,8 +488,9 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
 	struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
 	struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
 	IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
+	struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde;
 	dma_addr_t physaddr;
-	uint32_t i, num_bde = 0;
+	uint32_t num_bde = 0;
 	int nseg, datadir = scsi_cmnd->sc_data_direction;
 
 	/*
@@ -352,37 +528,159 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
 		 * during probe that limits the number of sg elements in any
 		 * single scsi command.  Just run through the seg_cnt and format
 		 * the bde's.
+		 * When using SLI-3 the driver will try to fit all the BDEs into
+		 * the IOCB. If it can't then the BDEs get added to a BPL as it
+		 * does for SLI-2 mode.
 		 */
-		scsi_for_each_sg(scsi_cmnd, sgel, nseg, i) {
+		scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
 			physaddr = sg_dma_address(sgel);
-			bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
-			bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
-			bpl->tus.f.bdeSize = sg_dma_len(sgel);
-			if (datadir == DMA_TO_DEVICE)
-				bpl->tus.f.bdeFlags = 0;
-			else
-				bpl->tus.f.bdeFlags = BUFF_USE_RCV;
-			bpl->tus.w = le32_to_cpu(bpl->tus.w);
-			bpl++;
-			num_bde++;
+			if (phba->sli_rev == 3 &&
+			    nseg <= LPFC_EXT_DATA_BDE_COUNT) {
+				data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+				data_bde->tus.f.bdeSize = sg_dma_len(sgel);
+				data_bde->addrLow = putPaddrLow(physaddr);
+				data_bde->addrHigh = putPaddrHigh(physaddr);
+				data_bde++;
+			} else {
+				bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+				bpl->tus.f.bdeSize = sg_dma_len(sgel);
+				bpl->tus.w = le32_to_cpu(bpl->tus.w);
+				bpl->addrLow =
+					le32_to_cpu(putPaddrLow(physaddr));
+				bpl->addrHigh =
+					le32_to_cpu(putPaddrHigh(physaddr));
+				bpl++;
+			}
 		}
 	}
 
 	/*
 	 * Finish initializing those IOCB fields that are dependent on the
-	 * scsi_cmnd request_buffer.  Note that the bdeSize is explicitly
-	 * reinitialized since all iocb memory resources are used many times
-	 * for transmit, receive, and continuation bpl's.
+	 * scsi_cmnd request_buffer.  Note that for SLI-2 the bdeSize is
+	 * explicitly reinitialized and for SLI-3 the extended bde count is
+	 * explicitly reinitialized since all iocb memory resources are reused.
 	 */
-	iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
-	iocb_cmd->un.fcpi64.bdl.bdeSize +=
-		(num_bde * sizeof (struct ulp_bde64));
-	iocb_cmd->ulpBdeCount = 1;
-	iocb_cmd->ulpLe = 1;
+	if (phba->sli_rev == 3) {
+		if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
+			/*
+			 * The extended IOCB format can only fit 3 BDE or a BPL.
+			 * This I/O has more than 3 BDE so the 1st data bde will
+			 * be a BPL that is filled in here.
+			 */
+			physaddr = lpfc_cmd->dma_handle;
+			data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64;
+			data_bde->tus.f.bdeSize = (num_bde *
+						   sizeof(struct ulp_bde64));
+			physaddr += (sizeof(struct fcp_cmnd) +
+				     sizeof(struct fcp_rsp) +
+				     (2 * sizeof(struct ulp_bde64)));
+			data_bde->addrHigh = putPaddrHigh(physaddr);
+			data_bde->addrLow = putPaddrLow(physaddr);
+			/* ebde count includes the responce bde and data bpl */
+			iocb_cmd->unsli3.fcp_ext.ebde_count = 2;
+		} else {
+			/* ebde count includes the responce bde and data bdes */
+			iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
+		}
+	} else {
+		iocb_cmd->un.fcpi64.bdl.bdeSize =
+			((num_bde + 2) * sizeof(struct ulp_bde64));
+	}
 	fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
 	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)
 {
@@ -411,6 +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
@@ -526,6 +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
@@ -542,9 +842,11 @@ 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;
+	atomic_dec(&pnode->cmd_pending);
 
 	if (lpfc_cmd->status) {
 		if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
@@ -570,12 +872,36 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
 			break;
 		case IOSTAT_NPORT_BSY:
 		case IOSTAT_FABRIC_BSY:
-			cmd->result = ScsiResult(DID_BUS_BUSY, 0);
+			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 == RJT_UNAVAIL_PERM ||
+			if (lpfc_cmd->result == IOERR_INVALID_RPI ||
 			    lpfc_cmd->result == IOERR_NO_RESOURCES ||
-			    lpfc_cmd->result == RJT_LOGIN_REQUIRED) {
+			    lpfc_cmd->result == IOERR_ABORT_REQUESTED) {
 				cmd->result = ScsiResult(DID_REQUEUE, 0);
 				break;
 			} /* else: fall through */
@@ -586,7 +912,8 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
 
 		if (!pnode || !NLP_CHK_NODE_ACT(pnode)
 		    || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
-			cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY);
+			cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED,
+						 SAM_STAT_BUSY);
 	} else {
 		cmd->result = ScsiResult(DID_OK, 0);
 	}
@@ -602,8 +929,32 @@ 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 &&
+	   time_after(jiffies, lpfc_cmd->start_time +
+		msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
+		spin_lock_irqsave(sdev->host->host_lock, flags);
+		if ((pnode->cmd_qdepth > atomic_read(&pnode->cmd_pending) &&
+		    (atomic_read(&pnode->cmd_pending) > LPFC_MIN_TGT_QDEPTH) &&
+		    ((cmd->cmnd[0] == READ_10) || (cmd->cmnd[0] == WRITE_10))))
+			pnode->cmd_qdepth = atomic_read(&pnode->cmd_pending);
+
+		pnode->last_change_time = jiffies;
+		spin_unlock_irqrestore(sdev->host->host_lock, flags);
+	} else if ((pnode->cmd_qdepth < LPFC_MAX_TGT_QDEPTH) &&
+		   time_after(jiffies, pnode->last_change_time +
+			msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) {
+		spin_lock_irqsave(sdev->host->host_lock, flags);
+		pnode->cmd_qdepth += pnode->cmd_qdepth *
+			LPFC_TGTQ_RAMPUP_PCENT / 100;
+		if (pnode->cmd_qdepth > LPFC_MAX_TGT_QDEPTH)
+			pnode->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
+		pnode->last_change_time = jiffies;
+		spin_unlock_irqrestore(sdev->host->host_lock, flags);
+	}
+
 	lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
 	cmd->scsi_done(cmd);
 
@@ -647,6 +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);
 	}
 
 	/*
@@ -676,6 +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);
 		}
 	}
 
@@ -692,6 +1049,24 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
 	lpfc_release_scsi_buf(phba, lpfc_cmd);
 }
 
+/**
+ * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB.
+ * @data: A pointer to the immediate command data portion of the IOCB.
+ * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
+ *
+ * The routine copies the entire FCP command from @fcp_cmnd to @data while
+ * byte swapping the data to big endian format for transmission on the wire.
+ **/
+static void
+lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
+{
+	int i, j;
+	for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
+	     i += sizeof(uint32_t), j++) {
+		((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
+	}
+}
+
 static void
 lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
 		    struct lpfc_nodelist *pnode)
@@ -758,7 +1133,8 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
 		fcp_cmnd->fcpCntl3 = 0;
 		phba->fc4ControlRequests++;
 	}
-
+	if (phba->sli_rev == 3)
+		lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
 	/*
 	 * Finish initializing those IOCB fields that are independent
 	 * of the scsi_cmnd request_buffer
@@ -798,11 +1174,13 @@ lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
 	piocb = &piocbq->iocb;
 
 	fcp_cmnd = lpfc_cmd->fcp_cmnd;
-	int_to_scsilun(lun, &lpfc_cmd->fcp_cmnd->fcp_lun);
+	/* Clear out any old data in the FCP command area */
+	memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
+	int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
 	fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
-
+	if (vport->phba->sli_rev == 3)
+		lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
 	piocb->ulpCommand = CMD_FCP_ICMND64_CR;
-
 	piocb->ulpContext = ndlp->nlp_rpi;
 	if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 		piocb->ulpFCP2Rcvy = 1;
@@ -967,9 +1345,12 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
 	 * transport is still transitioning.
 	 */
 	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
-		cmnd->result = ScsiResult(DID_BUS_BUSY, 0);
+		cmnd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0);
 		goto out_fail_command;
 	}
+	if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
+		goto out_host_busy;
+
 	lpfc_cmd = lpfc_get_scsi_buf(phba);
 	if (lpfc_cmd == NULL) {
 		lpfc_adjust_queue_depth(phba);
@@ -980,6 +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.
@@ -987,6 +1369,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
 	lpfc_cmd->pCmd  = cmnd;
 	lpfc_cmd->rdata = rdata;
 	lpfc_cmd->timeout = 0;
+	lpfc_cmd->start_time = jiffies;
 	cmnd->host_scribble = (unsigned char *)lpfc_cmd;
 	cmnd->scsi_done = done;
 
@@ -996,6 +1379,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
 
 	lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
 
+	atomic_inc(&ndlp->cmd_pending);
 	err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring],
 				  &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
 	if (err)
@@ -1010,6 +1394,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
 	return 0;
 
  out_host_busy_free_buf:
+	atomic_dec(&ndlp->cmd_pending);
 	lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
 	lpfc_release_scsi_buf(phba, lpfc_cmd);
  out_host_busy:
@@ -1145,6 +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);
 	/*
@@ -1163,6 +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 "
@@ -1242,10 +1641,23 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
 	struct lpfc_hba   *phba = vport->phba;
 	struct lpfc_nodelist *ndlp = NULL;
 	int match;
-	int ret = SUCCESS, status, i;
+	int ret = SUCCESS, status = SUCCESS, i;
 	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);
 	/*