1 files changed, 234 insertions, 23 deletions

diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index 56a3df4fddb0..061626bdf701 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -1,9 +1,11 @@
  /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
+ * Copyright (C) 2017 Broadcom. All Rights Reserved. The term      *
+ * “Broadcom” refers to Broadcom Limited and/or its subsidiaries.  *
  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
- * www.emulex.com                                                  *
+ * www.broadcom.com                                                *
  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  *                                                                 *
  * This program is free software; you can redistribute it and/or   *
@@ -28,6 +30,9 @@
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport_fc.h>
+#include <scsi/fc/fc_fs.h>
+
+#include <linux/nvme-fc-driver.h>
 
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
@@ -35,8 +40,9 @@
 #include "lpfc_sli4.h"
 #include "lpfc_nl.h"
 #include "lpfc_disc.h"
-#include "lpfc_scsi.h"
 #include "lpfc.h"
+#include "lpfc_scsi.h"
+#include "lpfc_nvme.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_crtn.h"
 #include "lpfc_vport.h"
@@ -204,10 +210,11 @@ int
 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 {
 	LIST_HEAD(abort_list);
-	struct lpfc_sli  *psli = &phba->sli;
-	struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
+	struct lpfc_sli_ring *pring;
 	struct lpfc_iocbq *iocb, *next_iocb;
 
+	pring = lpfc_phba_elsring(phba);
+
 	/* Abort outstanding I/O on NPort <nlp_DID> */
 	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 			 "2819 Abort outstanding I/O on NPort x%x "
@@ -283,6 +290,7 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	uint32_t ed_tov;
 	LPFC_MBOXQ_t *mbox;
 	struct ls_rjt stat;
+	uint32_t vid, flag;
 	int rc;
 
 	memset(&stat, 0, sizeof (struct ls_rjt));
@@ -418,6 +426,15 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 		lpfc_can_disctmo(vport);
 	}
 
+	ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
+	if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
+	    sp->cmn.valid_vendor_ver_level) {
+		vid = be32_to_cpu(sp->un.vv.vid);
+		flag = be32_to_cpu(sp->un.vv.flags);
+		if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
+			ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
+	}
+
 	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 	if (!mbox)
 		goto out;
@@ -707,6 +724,7 @@ static void
 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	      struct lpfc_iocbq *cmdiocb)
 {
+	struct lpfc_hba  *phba = vport->phba;
 	struct lpfc_dmabuf *pcmd;
 	uint32_t *lp;
 	PRLI *npr;
@@ -720,16 +738,32 @@ lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 	ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 	ndlp->nlp_flag &= ~NLP_FIRSTBURST;
-	if (npr->prliType == PRLI_FCP_TYPE) {
-		if (npr->initiatorFunc)
-			ndlp->nlp_type |= NLP_FCP_INITIATOR;
+	if ((npr->prliType == PRLI_FCP_TYPE) ||
+	    (npr->prliType == PRLI_NVME_TYPE)) {
+		if (npr->initiatorFunc) {
+			if (npr->prliType == PRLI_FCP_TYPE)
+				ndlp->nlp_type |= NLP_FCP_INITIATOR;
+			if (npr->prliType == PRLI_NVME_TYPE)
+				ndlp->nlp_type |= NLP_NVME_INITIATOR;
+		}
 		if (npr->targetFunc) {
-			ndlp->nlp_type |= NLP_FCP_TARGET;
+			if (npr->prliType == PRLI_FCP_TYPE)
+				ndlp->nlp_type |= NLP_FCP_TARGET;
+			if (npr->prliType == PRLI_NVME_TYPE)
+				ndlp->nlp_type |= NLP_NVME_TARGET;
 			if (npr->writeXferRdyDis)
 				ndlp->nlp_flag |= NLP_FIRSTBURST;
 		}
 		if (npr->Retry)
 			ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
+
+		/* If this driver is in nvme target mode, set the ndlp's fc4
+		 * type to NVME provided the PRLI response claims NVME FC4
+		 * type.  Target mode does not issue gft_id so doesn't get
+		 * the fc4 type set until now.
+		 */
+		if ((phba->nvmet_support) && (npr->prliType == PRLI_NVME_TYPE))
+			ndlp->nlp_fc4_type |= NLP_FC4_NVME;
 	}
 	if (rport) {
 		/* We need to update the rport role values */
@@ -743,7 +777,8 @@ lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 			"rport rolechg:   role:x%x did:x%x flg:x%x",
 			roles, ndlp->nlp_DID, ndlp->nlp_flag);
 
-		fc_remote_port_rolechg(rport, roles);
+		if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
+			fc_remote_port_rolechg(rport, roles);
 	}
 }
 
@@ -1026,6 +1061,7 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 	struct lpfc_iocbq  *cmdiocb, *rspiocb;
 	struct lpfc_dmabuf *pcmd, *prsp, *mp;
 	uint32_t *lp;
+	uint32_t vid, flag;
 	IOCB_t *irsp;
 	struct serv_parm *sp;
 	uint32_t ed_tov;
@@ -1094,6 +1130,16 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 			ed_tov = (phba->fc_edtov + 999999) / 1000000;
 		}
 
+		ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
+		if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
+		    sp->cmn.valid_vendor_ver_level) {
+			vid = be32_to_cpu(sp->un.vv.vid);
+			flag = be32_to_cpu(sp->un.vv.flags);
+			if ((vid == LPFC_VV_EMLX_ID) &&
+			    (flag & LPFC_VV_SUPPRESS_RSP))
+				ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
+		}
+
 		/*
 		 * Use the larger EDTOV
 		 * RATOV = 2 * EDTOV for pt-to-pt
@@ -1489,8 +1535,38 @@ lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
 			     uint32_t evt)
 {
 	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+	struct ls_rjt     stat;
+
+	if (vport->phba->nvmet_support) {
+		/* NVME Target mode.  Handle and respond to the PRLI and
+		 * transition to UNMAPPED provided the RPI has completed
+		 * registration.
+		 */
+		if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
+			lpfc_rcv_prli(vport, ndlp, cmdiocb);
+			lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+		} else {
+			/* RPI registration has not completed. Reject the PRLI
+			 * to prevent an illegal state transition when the
+			 * rpi registration does complete.
+			 */
+			lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
+					 "6115 NVMET ndlp rpi %d state "
+					 "unknown, state x%x flags x%08x\n",
+					 ndlp->nlp_rpi, ndlp->nlp_state,
+					 ndlp->nlp_flag);
+			memset(&stat, 0, sizeof(struct ls_rjt));
+			stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+			stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
+			lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
+					    ndlp, NULL);
+		}
+	} else {
+		/* Initiator mode. */
+		lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+	}
 
-	lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
 	return ndlp->nlp_state;
 }
 
@@ -1573,9 +1649,11 @@ lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
 				  uint32_t evt)
 {
 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba *phba = vport->phba;
 	LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 	MAILBOX_t *mb = &pmb->u.mb;
 	uint32_t did  = mb->un.varWords[1];
+	int rc = 0;
 
 	if (mb->mbxStatus) {
 		/* RegLogin failed */
@@ -1610,19 +1688,55 @@ lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
 	}
 
 	/* SLI4 ports have preallocated logical rpis. */
-	if (vport->phba->sli_rev < LPFC_SLI_REV4)
+	if (phba->sli_rev < LPFC_SLI_REV4)
 		ndlp->nlp_rpi = mb->un.varWords[0];
 
 	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
 
 	/* Only if we are not a fabric nport do we issue PRLI */
-	if (!(ndlp->nlp_type & NLP_FABRIC)) {
+	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+			 "3066 RegLogin Complete on x%x x%x x%x\n",
+			 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
+	if (!(ndlp->nlp_type & NLP_FABRIC) &&
+	    (phba->nvmet_support == 0)) {
+		/* The driver supports FCP and NVME concurrently.  If the
+		 * ndlp's nlp_fc4_type is still zero, the driver doesn't
+		 * know what PRLI to send yet.  Figure that out now and
+		 * call PRLI depending on the outcome.
+		 */
+		if (vport->fc_flag & FC_PT2PT) {
+			/* If we are pt2pt, there is no Fabric to determine
+			 * the FC4 type of the remote nport. So if NVME
+			 * is configured try it.
+			 */
+			ndlp->nlp_fc4_type |= NLP_FC4_FCP;
+			if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
+			     (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
+				ndlp->nlp_fc4_type |= NLP_FC4_NVME;
+				/* We need to update the localport also */
+				lpfc_nvme_update_localport(vport);
+			}
+
+		} else if (ndlp->nlp_fc4_type == 0) {
+			rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
+					 0, ndlp->nlp_DID);
+			return ndlp->nlp_state;
+		}
+
 		ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
 		lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
 		lpfc_issue_els_prli(vport, ndlp, 0);
 	} else {
-		ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
-		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+		if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
+			phba->targetport->port_id = vport->fc_myDID;
+
+		/* Only Fabric ports should transition. NVME target
+		 * must complete PRLI.
+		 */
+		if (ndlp->nlp_type & NLP_FABRIC) {
+			ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+		}
 	}
 	return ndlp->nlp_state;
 }
@@ -1663,7 +1777,14 @@ lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
 	ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
 	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 	spin_lock_irq(shost->host_lock);
-	ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
+
+	/* If we are a target we won't immediately transition into PRLI,
+	 * so if REG_LOGIN already completed we don't need to ignore it.
+	 */
+	if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
+	    !vport->phba->nvmet_support)
+		ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
+
 	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 	spin_unlock_irq(shost->host_lock);
 	lpfc_disc_set_adisc(vport, ndlp);
@@ -1739,10 +1860,23 @@ lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	struct lpfc_hba   *phba = vport->phba;
 	IOCB_t *irsp;
 	PRLI *npr;
+	struct lpfc_nvme_prli *nvpr;
+	void *temp_ptr;
 
 	cmdiocb = (struct lpfc_iocbq *) arg;
 	rspiocb = cmdiocb->context_un.rsp_iocb;
-	npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
+
+	/* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
+	 * format is different so NULL the two PRLI types so that the
+	 * driver correctly gets the correct context.
+	 */
+	npr = NULL;
+	nvpr = NULL;
+	temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
+	if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
+		npr = (PRLI *) temp_ptr;
+	else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
+		nvpr = (struct lpfc_nvme_prli *) temp_ptr;
 
 	irsp = &rspiocb->iocb;
 	if (irsp->ulpStatus) {
@@ -1750,7 +1884,21 @@ lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 		    vport->cfg_restrict_login) {
 			goto out;
 		}
+
+		/* The LS Req had some error.  Don't let this be a
+		 * target.
+		 */
+		if ((ndlp->fc4_prli_sent == 1) &&
+		    (ndlp->nlp_state == NLP_STE_PRLI_ISSUE) &&
+		    (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_FCP_INITIATOR)))
+			/* The FCP PRLI completed successfully but
+			 * the NVME PRLI failed.  Since they are sent in
+			 * succession, allow the FCP to complete.
+			 */
+			goto out_err;
+
 		ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+		ndlp->nlp_type |= NLP_FCP_INITIATOR;
 		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 		return ndlp->nlp_state;
 	}
@@ -1758,9 +1906,16 @@ lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	/* Check out PRLI rsp */
 	ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 	ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
+
+	/* NVME or FCP first burst must be negotiated for each PRLI. */
 	ndlp->nlp_flag &= ~NLP_FIRSTBURST;
-	if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
+	ndlp->nvme_fb_size = 0;
+	if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 	    (npr->prliType == PRLI_FCP_TYPE)) {
+		lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
+				 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
+				 npr->initiatorFunc,
+				 npr->targetFunc);
 		if (npr->initiatorFunc)
 			ndlp->nlp_type |= NLP_FCP_INITIATOR;
 		if (npr->targetFunc) {
@@ -1770,6 +1925,49 @@ lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 		}
 		if (npr->Retry)
 			ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
+
+		/* PRLI completed.  Decrement count. */
+		ndlp->fc4_prli_sent--;
+	} else if (nvpr &&
+		   (bf_get_be32(prli_acc_rsp_code, nvpr) ==
+		    PRLI_REQ_EXECUTED) &&
+		   (bf_get_be32(prli_type_code, nvpr) ==
+		    PRLI_NVME_TYPE)) {
+
+		/* Complete setting up the remote ndlp personality. */
+		if (bf_get_be32(prli_init, nvpr))
+			ndlp->nlp_type |= NLP_NVME_INITIATOR;
+
+		/* Target driver cannot solicit NVME FB. */
+		if (bf_get_be32(prli_tgt, nvpr)) {
+			ndlp->nlp_type |= NLP_NVME_TARGET;
+			if ((bf_get_be32(prli_fba, nvpr) == 1) &&
+			    (bf_get_be32(prli_fb_sz, nvpr) > 0) &&
+			    (phba->cfg_nvme_enable_fb) &&
+			    (!phba->nvmet_support)) {
+				/* Both sides support FB. The target's first
+				 * burst size is a 512 byte encoded value.
+				 */
+				ndlp->nlp_flag |= NLP_FIRSTBURST;
+				ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
+								 nvpr);
+			}
+		}
+
+		if (bf_get_be32(prli_recov, nvpr))
+			ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
+
+		lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
+				 "6029 NVME PRLI Cmpl w1 x%08x "
+				 "w4 x%08x w5 x%08x flag x%x, "
+				 "fcp_info x%x nlp_type x%x\n",
+				 be32_to_cpu(nvpr->word1),
+				 be32_to_cpu(nvpr->word4),
+				 be32_to_cpu(nvpr->word5),
+				 ndlp->nlp_flag, ndlp->nlp_fcp_info,
+				 ndlp->nlp_type);
+		/* PRLI completed.  Decrement count. */
+		ndlp->fc4_prli_sent--;
 	}
 	if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
 	    (vport->port_type == LPFC_NPIV_PORT) &&
@@ -1785,11 +1983,24 @@ out:
 		return ndlp->nlp_state;
 	}
 
-	ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
-	if (ndlp->nlp_type & NLP_FCP_TARGET)
-		lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
-	else
-		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+out_err:
+	/* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
+	 * are complete.
+	 */
+	if (ndlp->fc4_prli_sent == 0) {
+		ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+		if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
+		else
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+	} else
+		lpfc_printf_vlog(vport,
+				 KERN_INFO, LOG_ELS,
+				 "3067 PRLI's still outstanding "
+				 "on x%06x - count %d, Pend Node Mode "
+				 "transition...\n",
+				 ndlp->nlp_DID, ndlp->fc4_prli_sent);
+
 	return ndlp->nlp_state;
 }
 
@@ -2104,7 +2315,7 @@ lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 
 	/* flush the target */
-	lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
+	lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
 			    ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 
 	/* Treat like rcv logo */