[SCSI] lpfc 8.3.24: Add resource extent support

This patch adds support for hardware that returns resource ids via
extents rather than contiguous ranges.

[jejb: checkpatch.pl fixes]
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>

17 files changed, 1937 insertions, 276 deletions

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 9d0bfba5461..dfd9ace862e 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -780,6 +780,9 @@ struct lpfc_hba {
 	uint16_t vpi_base;
 	uint16_t vfi_base;
 	unsigned long *vpi_bmask;	/* vpi allocation table */
+	uint16_t *vpi_ids;
+	uint16_t vpi_count;
+	struct list_head lpfc_vpi_blk_list;
 
 	/* Data structure used by fabric iocb scheduler */
 	struct list_head fabric_iocb_list;
diff --git a/drivers/scsi/lpfc/lpfc_bsg.c b/drivers/scsi/lpfc/lpfc_bsg.c
index 853e5042f39..080187b0e70 100644
--- a/drivers/scsi/lpfc/lpfc_bsg.c
+++ b/drivers/scsi/lpfc/lpfc_bsg.c
@@ -332,6 +332,8 @@ lpfc_bsg_send_mgmt_cmd(struct fc_bsg_job *job)
 	cmd->ulpLe = 1;
 	cmd->ulpClass = CLASS3;
 	cmd->ulpContext = ndlp->nlp_rpi;
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		cmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
 	cmd->ulpOwner = OWN_CHIP;
 	cmdiocbq->vport = phba->pport;
 	cmdiocbq->context3 = bmp;
@@ -1336,6 +1338,10 @@ lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag,
 		}
 
 		icmd->un.ulpWord[3] = ndlp->nlp_rpi;
+		if (phba->sli_rev == LPFC_SLI_REV4)
+			icmd->ulpContext =
+				phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
+
 		/* The exchange is done, mark the entry as invalid */
 		phba->ct_ctx[tag].flags &= ~UNSOL_VALID;
 	} else
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
index 0b63cb2610d..fc20c247f36 100644
--- a/drivers/scsi/lpfc/lpfc_crtn.h
+++ b/drivers/scsi/lpfc/lpfc_crtn.h
@@ -55,6 +55,8 @@ void lpfc_request_features(struct lpfc_hba *, struct lpfcMboxq *);
 void lpfc_supported_pages(struct lpfcMboxq *);
 void lpfc_pc_sli4_params(struct lpfcMboxq *);
 int lpfc_pc_sli4_params_get(struct lpfc_hba *, LPFC_MBOXQ_t *);
+int lpfc_sli4_mbox_rsrc_extent(struct lpfc_hba *, struct lpfcMboxq *,
+			   uint16_t, uint16_t, bool);
 int lpfc_get_sli4_parameters(struct lpfc_hba *, LPFC_MBOXQ_t *);
 struct lpfc_vport *lpfc_find_vport_by_did(struct lpfc_hba *, uint32_t);
 void lpfc_cleanup_rcv_buffers(struct lpfc_vport *);
@@ -366,6 +368,10 @@ extern void lpfc_debugfs_slow_ring_trc(struct lpfc_hba *, char *, uint32_t,
 	uint32_t, uint32_t);
 extern struct lpfc_hbq_init *lpfc_hbq_defs[];
 
+/* SLI4 if_type 2 externs. */
+int lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *);
+int lpfc_sli4_dealloc_resource_identifiers(struct lpfc_hba *);
+
 /* externs BlockGuard */
 extern char *_dump_buf_data;
 extern unsigned long _dump_buf_data_order;
diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index d9edfd90d7f..779b88e1469 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -352,6 +352,8 @@ lpfc_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
 	icmd->ulpLe = 1;
 	icmd->ulpClass = CLASS3;
 	icmd->ulpContext = ndlp->nlp_rpi;
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		icmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
 
 	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
 		/* For GEN_REQUEST64_CR, use the RPI */
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index e2c452467c8..32a084534f3 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -250,7 +250,7 @@ lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
 		icmd->un.elsreq64.myID = vport->fc_myDID;
 
 		/* For ELS_REQUEST64_CR, use the VPI by default */
-		icmd->ulpContext = vport->vpi + phba->vpi_base;
+		icmd->ulpContext = phba->vpi_ids[vport->vpi];
 		icmd->ulpCt_h = 0;
 		/* The CT field must be 0=INVALID_RPI for the ECHO cmd */
 		if (elscmd == ELS_CMD_ECHO)
@@ -454,6 +454,7 @@ lpfc_issue_reg_vfi(struct lpfc_vport *vport)
 		rc = -ENOMEM;
 		goto fail_free_dmabuf;
 	}
+
 	mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 	if (!mboxq) {
 		rc = -ENOMEM;
@@ -6585,6 +6586,26 @@ lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
 {
 	struct lpfc_vport *vport;
 	unsigned long flags;
+	int i;
+
+	/* The physical ports are always vpi 0 - translate is unnecessary. */
+	if (vpi > 0) {
+		/*
+		 * Translate the physical vpi to the logical vpi.  The
+		 * vport stores the logical vpi.
+		 */
+		for (i = 0; i < phba->max_vpi; i++) {
+			if (vpi == phba->vpi_ids[i])
+				break;
+		}
+
+		if (i >= phba->max_vpi) {
+			lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
+					 "2936 Could not find Vport mapped "
+					 "to vpi %d\n", vpi);
+			return NULL;
+		}
+	}
 
 	spin_lock_irqsave(&phba->hbalock, flags);
 	list_for_each_entry(vport, &phba->port_list, listentry) {
@@ -6641,8 +6662,9 @@ lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 			vport = phba->pport;
 		else
 			vport = lpfc_find_vport_by_vpid(phba,
-				icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
+						icmd->unsli3.rcvsli3.vpi);
 	}
+
 	/* If there are no BDEs associated
 	 * with this IOCB, there is nothing to do.
 	 */
@@ -7222,7 +7244,7 @@ lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 		elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1;
 		elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ;
 		/* Set the ulpContext to the vpi */
-		elsiocb->iocb.ulpContext = vport->vpi + phba->vpi_base;
+		elsiocb->iocb.ulpContext = phba->vpi_ids[vport->vpi];
 	} else {
 		/* For FDISC, Let FDISC rsp set the NPortID for this VPI */
 		icmd->ulpCt_h = 1;
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 2653c844d20..18d0dbfda2b 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -881,7 +881,7 @@ lpfc_linkdown(struct lpfc_hba *phba)
 	/* Clean up any firmware default rpi's */
 	mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 	if (mb) {
-		lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
+		lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
 		mb->vport = vport;
 		mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 		if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
@@ -3421,7 +3421,8 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 		return;
 	}
 
-	ndlp->nlp_rpi = mb->un.varWords[0];
+	if (phba->sli_rev < LPFC_SLI_REV4)
+		ndlp->nlp_rpi = mb->un.varWords[0];
 	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
 	ndlp->nlp_type |= NLP_FABRIC;
 	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
@@ -3495,7 +3496,8 @@ out:
 		return;
 	}
 
-	ndlp->nlp_rpi = mb->un.varWords[0];
+	if (phba->sli_rev < LPFC_SLI_REV4)
+		ndlp->nlp_rpi = mb->un.varWords[0];
 	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
 	ndlp->nlp_type |= NLP_FABRIC;
 	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
@@ -3582,7 +3584,6 @@ lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 	if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 		rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 
-
 	if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
 		fc_remote_port_rolechg(rport, rport_ids.roles);
 
@@ -4097,11 +4098,16 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 	struct lpfc_hba *phba = vport->phba;
 	LPFC_MBOXQ_t    *mbox;
 	int rc;
+	uint16_t rpi;
 
 	if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
 		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 		if (mbox) {
-			lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
+			/* SLI4 ports require the physical rpi value. */
+			rpi = ndlp->nlp_rpi;
+			if (phba->sli_rev == LPFC_SLI_REV4)
+				rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
+			lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
 			mbox->vport = vport;
 			mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 			rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
@@ -4170,7 +4176,8 @@ lpfc_unreg_all_rpis(struct lpfc_vport *vport)
 
 	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 	if (mbox) {
-		lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
+		lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
+				 mbox);
 		mbox->vport = vport;
 		mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 		mbox->context1 = NULL;
@@ -4194,7 +4201,8 @@ lpfc_unreg_default_rpis(struct lpfc_vport *vport)
 
 	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 	if (mbox) {
-		lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
+		lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
+			       mbox);
 		mbox->vport = vport;
 		mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 		mbox->context1 = NULL;
@@ -4644,10 +4652,7 @@ lpfc_disc_start(struct lpfc_vport *vport)
 	if (num_sent)
 		return;
 
-	/*
-	 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
-	 * continue discovery.
-	 */
+	/* Register the VPI for SLI3, NON-NPIV only. */
 	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 	    !(vport->fc_flag & FC_PT2PT) &&
 	    !(vport->fc_flag & FC_RSCN_MODE) &&
@@ -4934,7 +4939,7 @@ restart_disc:
 		if (phba->sli_rev < LPFC_SLI_REV4) {
 			if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 				lpfc_issue_reg_vpi(phba, vport);
-			else  {	/* NPIV Not enabled */
+			else  {
 				lpfc_issue_clear_la(phba, vport);
 				vport->port_state = LPFC_VPORT_READY;
 			}
@@ -5060,7 +5065,8 @@ lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 	pmb->context1 = NULL;
 	pmb->context2 = NULL;
 
-	ndlp->nlp_rpi = mb->un.varWords[0];
+	if (phba->sli_rev < LPFC_SLI_REV4)
+		ndlp->nlp_rpi = mb->un.varWords[0];
 	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
 	ndlp->nlp_type |= NLP_FABRIC;
 	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index bb3af9fabd7..9059524cf22 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -64,6 +64,8 @@
 #define SLI3_IOCB_CMD_SIZE	128
 #define SLI3_IOCB_RSP_SIZE	64
 
+#define LPFC_UNREG_ALL_RPIS_VPORT	0xffff
+#define LPFC_UNREG_ALL_DFLT_RPIS	0xffffffff
 
 /* vendor ID used in SCSI netlink calls */
 #define LPFC_NL_VENDOR_ID (SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX)
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 61a40fd1ad1..f14db2d17f2 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -229,9 +229,26 @@ struct ulp_bde64 {
 
 struct lpfc_sli4_flags {
 	uint32_t word0;
-#define lpfc_fip_flag_SHIFT 0
-#define lpfc_fip_flag_MASK 0x00000001
-#define lpfc_fip_flag_WORD word0
+#define lpfc_idx_rsrc_rdy_SHIFT		0
+#define lpfc_idx_rsrc_rdy_MASK		0x00000001
+#define lpfc_idx_rsrc_rdy_WORD		word0
+#define LPFC_IDX_RSRC_RDY		1
+#define lpfc_xri_rsrc_rdy_SHIFT		1
+#define lpfc_xri_rsrc_rdy_MASK		0x00000001
+#define lpfc_xri_rsrc_rdy_WORD		word0
+#define LPFC_XRI_RSRC_RDY		1
+#define lpfc_rpi_rsrc_rdy_SHIFT		2
+#define lpfc_rpi_rsrc_rdy_MASK		0x00000001
+#define lpfc_rpi_rsrc_rdy_WORD		word0
+#define LPFC_RPI_RSRC_RDY		1
+#define lpfc_vpi_rsrc_rdy_SHIFT		3
+#define lpfc_vpi_rsrc_rdy_MASK		0x00000001
+#define lpfc_vpi_rsrc_rdy_WORD		word0
+#define LPFC_VPI_RSRC_RDY		1
+#define lpfc_vfi_rsrc_rdy_SHIFT		4
+#define lpfc_vfi_rsrc_rdy_MASK		0x00000001
+#define lpfc_vfi_rsrc_rdy_WORD		word0
+#define LPFC_VFI_RSRC_RDY		1
 };
 
 struct sli4_bls_rsp {
@@ -791,12 +808,22 @@ union lpfc_sli4_cfg_shdr {
 	} response;
 };
 
-/* Mailbox structures */
+/* Mailbox Header structures.
+ * struct mbox_header is defined for first generation SLI4_CFG mailbox
+ * calls deployed for BE-based ports.
+ *
+ * struct sli4_mbox_header is defined for second generation SLI4
+ * ports that don't deploy the SLI4_CFG mechanism.
+ */
 struct mbox_header {
 	struct lpfc_sli4_cfg_mhdr cfg_mhdr;
 	union  lpfc_sli4_cfg_shdr cfg_shdr;
 };
 
+#define LPFC_EXTENT_LOCAL		0
+#define LPFC_TIMEOUT_DEFAULT		0
+#define LPFC_EXTENT_VERSION_DEFAULT	0
+
 /* Subsystem Definitions */
 #define LPFC_MBOX_SUBSYSTEM_COMMON	0x1
 #define LPFC_MBOX_SUBSYSTEM_FCOE	0xC
@@ -819,6 +846,10 @@ struct mbox_header {
 #define LPFC_MBOX_OPCODE_QUERY_FW_CFG		0x3A
 #define LPFC_MBOX_OPCODE_FUNCTION_RESET		0x3D
 #define LPFC_MBOX_OPCODE_MQ_CREATE_EXT		0x5A
+#define LPFC_MBOX_OPCODE_GET_RSRC_EXTENT_INFO	0x9A
+#define LPFC_MBOX_OPCODE_GET_ALLOC_RSRC_EXTENT	0x9B
+#define LPFC_MBOX_OPCODE_ALLOC_RSRC_EXTENT	0x9C
+#define LPFC_MBOX_OPCODE_DEALLOC_RSRC_EXTENT	0x9D
 #define LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG    0xA0
 #define LPFC_MBOX_OPCODE_GET_PROFILE_CONFIG	0xA4
 #define LPFC_MBOX_OPCODE_WRITE_OBJECT		0xAC
@@ -1238,6 +1269,110 @@ struct lpfc_mbx_mq_destroy {
 	} u;
 };
 
+/* Start Gen 2 SLI4 Mailbox definitions: */
+
+/* Define allocate-ready Gen 2 SLI4 FCoE Resource Extent Types. */
+#define LPFC_RSC_TYPE_FCOE_VFI	0x20
+#define LPFC_RSC_TYPE_FCOE_VPI	0x21
+#define LPFC_RSC_TYPE_FCOE_RPI	0x22
+#define LPFC_RSC_TYPE_FCOE_XRI	0x23
+
+struct lpfc_mbx_get_rsrc_extent_info {
+	struct mbox_header header;
+	union {
+		struct {
+			uint32_t word4;
+#define lpfc_mbx_get_rsrc_extent_info_type_SHIFT	0
+#define lpfc_mbx_get_rsrc_extent_info_type_MASK		0x0000FFFF
+#define lpfc_mbx_get_rsrc_extent_info_type_WORD		word4
+		} req;
+		struct {
+			uint32_t word4;
+#define lpfc_mbx_get_rsrc_extent_info_cnt_SHIFT		0
+#define lpfc_mbx_get_rsrc_extent_info_cnt_MASK		0x0000FFFF
+#define lpfc_mbx_get_rsrc_extent_info_cnt_WORD		word4
+#define lpfc_mbx_get_rsrc_extent_info_size_SHIFT	16
+#define lpfc_mbx_get_rsrc_extent_info_size_MASK		0x0000FFFF
+#define lpfc_mbx_get_rsrc_extent_info_size_WORD		word4
+		} rsp;
+	} u;
+};
+
+struct lpfc_id_range {
+	uint32_t word5;
+#define lpfc_mbx_rsrc_id_word4_0_SHIFT	0
+#define lpfc_mbx_rsrc_id_word4_0_MASK	0x0000FFFF
+#define lpfc_mbx_rsrc_id_word4_0_WORD	word5
+#define lpfc_mbx_rsrc_id_word4_1_SHIFT	16
+#define lpfc_mbx_rsrc_id_word4_1_MASK	0x0000FFFF
+#define lpfc_mbx_rsrc_id_word4_1_WORD	word5
+};
+
+/*
+ * struct lpfc_mbx_alloc_rsrc_extents:
+ * A mbox is generically 256 bytes long. An SLI4_CONFIG mailbox requires
+ * 6 words of header + 4 words of shared subcommand header +
+ * 1 words of Extent-Opcode-specific header = 11 words or 44 bytes total.
+ *
+ * An embedded version of SLI4_CONFIG therefore has 256 - 44 = 212 bytes
+ * for extents payload.
+ *
+ * 212/2 (bytes per extent) = 106 extents.
+ * 106/2 (extents per word) = 53 words.
+ * lpfc_id_range id is statically size to 53.
+ *
+ * This mailbox definition is used for ALLOC or GET_ALLOCATED
+ * extent ranges.  For ALLOC, the type and cnt are required.
+ * For GET_ALLOCATED, only the type is required.
+ */
+struct lpfc_mbx_alloc_rsrc_extents {
+	struct mbox_header header;
+	union {
+		struct {
+			uint32_t word4;
+#define lpfc_mbx_alloc_rsrc_extents_type_SHIFT	0
+#define lpfc_mbx_alloc_rsrc_extents_type_MASK	0x0000FFFF
+#define lpfc_mbx_alloc_rsrc_extents_type_WORD	word4
+#define lpfc_mbx_alloc_rsrc_extents_cnt_SHIFT	16
+#define lpfc_mbx_alloc_rsrc_extents_cnt_MASK	0x0000FFFF
+#define lpfc_mbx_alloc_rsrc_extents_cnt_WORD	word4
+		} req;
+		struct {
+			uint32_t word4;
+#define lpfc_mbx_rsrc_cnt_SHIFT	0
+#define lpfc_mbx_rsrc_cnt_MASK	0x0000FFFF
+#define lpfc_mbx_rsrc_cnt_WORD	word4
+			struct lpfc_id_range id[53];
+		} rsp;
+	} u;
+};
+
+/*
+ * This is the non-embedded version of ALLOC or GET RSRC_EXTENTS. Word4 in this
+ * structure shares the same SHIFT/MASK/WORD defines provided in the
+ * mbx_alloc_rsrc_extents and mbx_get_alloc_rsrc_extents, word4, provided in
+ * the structures defined above.  This non-embedded structure provides for the
+ * maximum number of extents supported by the port.
+ */
+struct lpfc_mbx_nembed_rsrc_extent {
+	union  lpfc_sli4_cfg_shdr cfg_shdr;
+	uint32_t word4;
+	struct lpfc_id_range id;
+};
+
+struct lpfc_mbx_dealloc_rsrc_extents {
+	struct mbox_header header;
+	struct {
+		uint32_t word4;
+#define lpfc_mbx_dealloc_rsrc_extents_type_SHIFT	0
+#define lpfc_mbx_dealloc_rsrc_extents_type_MASK		0x0000FFFF
+#define lpfc_mbx_dealloc_rsrc_extents_type_WORD		word4
+	} req;
+
+};
+
+/* Start SLI4 FCoE specific mbox structures. */
+
 struct lpfc_mbx_post_hdr_tmpl {
 	struct mbox_header header;
 	uint32_t word10;
@@ -1801,61 +1936,31 @@ struct lpfc_mbx_read_rev {
 
 struct lpfc_mbx_read_config {
 	uint32_t word1;
-#define lpfc_mbx_rd_conf_max_bbc_SHIFT		0
-#define lpfc_mbx_rd_conf_max_bbc_MASK		0x000000FF
-#define lpfc_mbx_rd_conf_max_bbc_WORD		word1
-#define lpfc_mbx_rd_conf_init_bbc_SHIFT		8
-#define lpfc_mbx_rd_conf_init_bbc_MASK		0x000000FF
-#define lpfc_mbx_rd_conf_init_bbc_WORD		word1
+#define lpfc_mbx_rd_conf_extnts_inuse_SHIFT	31
+#define lpfc_mbx_rd_conf_extnts_inuse_MASK	0x00000001
+#define lpfc_mbx_rd_conf_extnts_inuse_WORD	word1
 	uint32_t word2;
-#define lpfc_mbx_rd_conf_nport_did_SHIFT	0
-#define lpfc_mbx_rd_conf_nport_did_MASK		0x00FFFFFF
-#define lpfc_mbx_rd_conf_nport_did_WORD		word2
 #define lpfc_mbx_rd_conf_topology_SHIFT		24
 #define lpfc_mbx_rd_conf_topology_MASK		0x000000FF
 #define lpfc_mbx_rd_conf_topology_WORD		word2
-	uint32_t word3;
-#define lpfc_mbx_rd_conf_ao_SHIFT		0
-#define lpfc_mbx_rd_conf_ao_MASK		0x00000001
-#define lpfc_mbx_rd_conf_ao_WORD		word3
-#define lpfc_mbx_rd_conf_bb_scn_SHIFT		8
-#define lpfc_mbx_rd_conf_bb_scn_MASK		0x0000000F
-#define lpfc_mbx_rd_conf_bb_scn_WORD		word3
-#define lpfc_mbx_rd_conf_cbb_scn_SHIFT		12
-#define lpfc_mbx_rd_conf_cbb_scn_MASK		0x0000000F
-#define lpfc_mbx_rd_conf_cbb_scn_WORD		word3
-#define lpfc_mbx_rd_conf_mc_SHIFT		29
-#define lpfc_mbx_rd_conf_mc_MASK		0x00000001
-#define lpfc_mbx_rd_conf_mc_WORD		word3
+	uint32_t rsvd_3;
 	uint32_t word4;
 #define lpfc_mbx_rd_conf_e_d_tov_SHIFT		0
 #define lpfc_mbx_rd_conf_e_d_tov_MASK		0x0000FFFF
 #define lpfc_mbx_rd_conf_e_d_tov_WORD		word4
-	uint32_t word5;
-#define lpfc_mbx_rd_conf_lp_tov_SHIFT		0
-#define lpfc_mbx_rd_conf_lp_tov_MASK		0x0000FFFF
-#define lpfc_mbx_rd_conf_lp_tov_WORD		word5
+	uint32_t rsvd_5;
 	uint32_t word6;
 #define lpfc_mbx_rd_conf_r_a_tov_SHIFT		0
 #define lpfc_mbx_rd_conf_r_a_tov_MASK		0x0000FFFF
 #define lpfc_mbx_rd_conf_r_a_tov_WORD		word6
-	uint32_t word7;
-#define lpfc_mbx_rd_conf_r_t_tov_SHIFT		0
-#define lpfc_mbx_rd_conf_r_t_tov_MASK		0x000000FF
-#define lpfc_mbx_rd_conf_r_t_tov_WORD		word7
-	uint32_t word8;
-#define lpfc_mbx_rd_conf_al_tov_SHIFT		0
-#define lpfc_mbx_rd_conf_al_tov_MASK		0x0000000F
-#define lpfc_mbx_rd_conf_al_tov_WORD		word8
+	uint32_t rsvd_7;
+	uint32_t rsvd_8;
 	uint32_t word9;
 #define lpfc_mbx_rd_conf_lmt_SHIFT		0
 #define lpfc_mbx_rd_conf_lmt_MASK		0x0000FFFF
 #define lpfc_mbx_rd_conf_lmt_WORD		word9
-	uint32_t word10;
-#define lpfc_mbx_rd_conf_max_alpa_SHIFT		0
-#define lpfc_mbx_rd_conf_max_alpa_MASK		0x000000FF
-#define lpfc_mbx_rd_conf_max_alpa_WORD		word10
-	uint32_t word11_rsvd;
+	uint32_t rsvd_10;
+	uint32_t rsvd_11;
 	uint32_t word12;
 #define lpfc_mbx_rd_conf_xri_base_SHIFT		0
 #define lpfc_mbx_rd_conf_xri_base_MASK		0x0000FFFF
@@ -1885,9 +1990,6 @@ struct lpfc_mbx_read_config {
 #define lpfc_mbx_rd_conf_vfi_count_MASK         0x0000FFFF
 #define lpfc_mbx_rd_conf_vfi_count_WORD         word15
 	uint32_t word16;
-#define lpfc_mbx_rd_conf_fcfi_base_SHIFT	0
-#define lpfc_mbx_rd_conf_fcfi_base_MASK		0x0000FFFF
-#define lpfc_mbx_rd_conf_fcfi_base_WORD		word16
 #define lpfc_mbx_rd_conf_fcfi_count_SHIFT	16
 #define lpfc_mbx_rd_conf_fcfi_count_MASK	0x0000FFFF
 #define lpfc_mbx_rd_conf_fcfi_count_WORD	word16
@@ -2197,6 +2299,12 @@ struct lpfc_sli4_parameters {
 #define cfg_fcoe_SHIFT				0
 #define cfg_fcoe_MASK				0x00000001
 #define cfg_fcoe_WORD				word12
+#define cfg_ext_SHIFT				1
+#define cfg_ext_MASK				0x00000001
+#define cfg_ext_WORD				word12
+#define cfg_hdrr_SHIFT				2
+#define cfg_hdrr_MASK				0x00000001
+#define cfg_hdrr_WORD				word12
 #define cfg_phwq_SHIFT				15
 #define cfg_phwq_MASK				0x00000001
 #define cfg_phwq_WORD				word12
@@ -2431,6 +2539,9 @@ struct lpfc_mqe {
 		struct lpfc_mbx_cq_destroy cq_destroy;
 		struct lpfc_mbx_wq_destroy wq_destroy;
 		struct lpfc_mbx_rq_destroy rq_destroy;
+		struct lpfc_mbx_get_rsrc_extent_info rsrc_extent_info;
+		struct lpfc_mbx_alloc_rsrc_extents alloc_rsrc_extents;
+		struct lpfc_mbx_dealloc_rsrc_extents dealloc_rsrc_extents;
 		struct lpfc_mbx_post_sgl_pages post_sgl_pages;
 		struct lpfc_mbx_nembed_cmd nembed_cmd;
 		struct lpfc_mbx_read_rev read_rev;
@@ -2651,7 +2762,7 @@ struct lpfc_bmbx_create {
 #define SGL_ALIGN_SZ 64
 #define SGL_PAGE_SIZE 4096
 /* align SGL addr on a size boundary - adjust address up */
-#define NO_XRI  ((uint16_t)-1)
+#define NO_XRI  0xffff
 
 struct wqe_common {
 	uint32_t word6;
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 2b535cff4b2..09632ea689e 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -212,7 +212,6 @@ lpfc_config_port_prep(struct lpfc_hba *phba)
 	lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 	if (!lpfc_vpd_data)
 		goto out_free_mbox;
-
 	do {
 		lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
@@ -603,7 +602,6 @@ lpfc_config_port_post(struct lpfc_hba *phba)
 			/* Clear all pending interrupts */
 			writel(0xffffffff, phba->HAregaddr);
 			readl(phba->HAregaddr); /* flush */
-
 			phba->link_state = LPFC_HBA_ERROR;
 			if (rc != MBX_BUSY)
 				mempool_free(pmb, phba->mbox_mem_pool);
@@ -2690,6 +2688,7 @@ lpfc_scsi_free(struct lpfc_hba *phba)
 		kfree(io);
 		phba->total_iocbq_bufs--;
 	}
+
 	spin_unlock_irq(&phba->hbalock);
 	return 0;
 }
@@ -3646,6 +3645,7 @@ lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
 			"2718 Clear Virtual Link Received for VPI 0x%x"
 			" tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
+
 		vport = lpfc_find_vport_by_vpid(phba,
 				acqe_fip->index - phba->vpi_base);
 		ndlp = lpfc_sli4_perform_vport_cvl(vport);
@@ -4319,7 +4319,7 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
 	spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock);
 
 	/*
-	 * Initialize dirver internal slow-path work queues
+	 * Initialize driver internal slow-path work queues
 	 */
 
 	/* Driver internel slow-path CQ Event pool */
@@ -4335,6 +4335,12 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
 	/* Receive queue CQ Event work queue list */
 	INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
 
+	/* Initialize extent block lists. */
+	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
+	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
+	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
+	INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
+
 	/* Initialize the driver internal SLI layer lists. */
 	lpfc_sli_setup(phba);
 	lpfc_sli_queue_setup(phba);
@@ -4409,9 +4415,19 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
 	}
 	/*
 	 * Get sli4 parameters that override parameters from Port capabilities.
-	 * If this call fails it is not a critical error so continue loading.
+	 * If this call fails, it isn't critical unless the SLI4 parameters come
+	 * back in conflict.
 	 */
-	lpfc_get_sli4_parameters(phba, mboxq);
+	rc = lpfc_get_sli4_parameters(phba, mboxq);
+	if (rc) {
+		if (phba->sli4_hba.extents_in_use &&
+		    phba->sli4_hba.rpi_hdrs_in_use) {
+			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+				"2999 Unsupported SLI4 Parameters "
+				"Extents and RPI headers enabled.\n");
+			goto out_free_bsmbx;
+		}
+	}
 	mempool_free(mboxq, phba->mbox_mem_pool);
 	/* Create all the SLI4 queues */
 	rc = lpfc_sli4_queue_create(phba);
@@ -4436,7 +4452,6 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
 				"1430 Failed to initialize sgl list.\n");
 		goto out_free_sgl_list;
 	}
-
 	rc = lpfc_sli4_init_rpi_hdrs(phba);
 	if (rc) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
@@ -4555,6 +4570,9 @@ lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
 	lpfc_sli4_cq_event_release_all(phba);
 	lpfc_sli4_cq_event_pool_destroy(phba);
 
+	/* Release resource identifiers. */
+	lpfc_sli4_dealloc_resource_identifiers(phba);
+
 	/* Free the bsmbx region. */
 	lpfc_destroy_bootstrap_mbox(phba);
 
@@ -4755,6 +4773,7 @@ lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
 				"Unloading driver.\n", __func__);
 			goto out_free_iocbq;
 		}
+		iocbq_entry->sli4_lxritag = NO_XRI;
 		iocbq_entry->sli4_xritag = NO_XRI;
 
 		spin_lock_irq(&phba->hbalock);
@@ -4852,7 +4871,7 @@ lpfc_init_sgl_list(struct lpfc_hba *phba)
 
 	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
-				"2400 lpfc_init_sgl_list els %d.\n",
+				"2400 ELS XRI count %d.\n",
 				els_xri_cnt);
 	/* Initialize and populate the sglq list per host/VF. */
 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list);
@@ -4885,7 +4904,6 @@ lpfc_init_sgl_list(struct lpfc_hba *phba)
 	phba->sli4_hba.scsi_xri_max =
 			phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
 	phba->sli4_hba.scsi_xri_cnt = 0;
-
 	phba->sli4_hba.lpfc_scsi_psb_array =
 			kzalloc((sizeof(struct lpfc_scsi_buf *) *
 			phba->sli4_hba.scsi_xri_max), GFP_KERNEL);
@@ -4908,13 +4926,6 @@ lpfc_init_sgl_list(struct lpfc_hba *phba)
 			goto out_free_mem;
 		}
 
-		sglq_entry->sli4_xritag = lpfc_sli4_next_xritag(phba);
-		if (sglq_entry->sli4_xritag == NO_XRI) {
-			kfree(sglq_entry);
-			printk(KERN_ERR "%s: failed to allocate XRI.\n"
-				"Unloading driver.\n", __func__);
-			goto out_free_mem;
-		}
 		sglq_entry->buff_type = GEN_BUFF_TYPE;
 		sglq_entry->virt = lpfc_mbuf_alloc(phba, 0, &sglq_entry->phys);
 		if (sglq_entry->virt == NULL) {
@@ -4963,24 +4974,20 @@ int
 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
 {
 	int rc = 0;
-	int longs;
-	uint16_t rpi_count;
 	struct lpfc_rpi_hdr *rpi_hdr;
 
 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
-
 	/*
-	 * Provision an rpi bitmask range for discovery. The total count
-	 * is the difference between max and base + 1.
+	 * If the SLI4 port supports extents, posting the rpi header isn't
+	 * required.  Set the expected maximum count and let the actual value
+	 * get set when extents are fully allocated.
 	 */
-	rpi_count = phba->sli4_hba.max_cfg_param.rpi_base +
-		    phba->sli4_hba.max_cfg_param.max_rpi - 1;
-
-	longs = ((rpi_count) + BITS_PER_LONG - 1) / BITS_PER_LONG;
-	phba->sli4_hba.rpi_bmask = kzalloc(longs * sizeof(unsigned long),
-					   GFP_KERNEL);
-	if (!phba->sli4_hba.rpi_bmask)
-		return -ENOMEM;
+	if (!phba->sli4_hba.rpi_hdrs_in_use) {
+		phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
+		return rc;
+	}
+	if (phba->sli4_hba.extents_in_use)
+		return -EIO;
 
 	rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
 	if (!rpi_hdr) {
@@ -5014,11 +5021,28 @@ lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
 	struct lpfc_rpi_hdr *rpi_hdr;
 	uint32_t rpi_count;
 
+	/*
+	 * If the SLI4 port supports extents, posting the rpi header isn't
+	 * required.  Set the expected maximum count and let the actual value
+	 * get set when extents are fully allocated.
+	 */
+	if (!phba->sli4_hba.rpi_hdrs_in_use)
+		return NULL;
+	if (phba->sli4_hba.extents_in_use)
+		return NULL;
+
+	/* The limit on the logical index is just the max_rpi count. */
 	rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base +
-		    phba->sli4_hba.max_cfg_param.max_rpi - 1;
+	phba->sli4_hba.max_cfg_param.max_rpi - 1;
 
 	spin_lock_irq(&phba->hbalock);
-	curr_rpi_range = phba->sli4_hba.next_rpi;
+	/*
+	 * Establish the starting RPI in this header block.  The starting
+	 * rpi is normalized to a zero base because the physical rpi is
+	 * port based.
+	 */
+	curr_rpi_range = phba->sli4_hba.next_rpi -
+		phba->sli4_hba.max_cfg_param.rpi_base;
 	spin_unlock_irq(&phba->hbalock);
 
 	/*
@@ -5031,6 +5055,8 @@ lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
 	else
 		rpi_count = LPFC_RPI_HDR_COUNT;
 
+	if (!rpi_count)
+		return NULL;
 	/*
 	 * First allocate the protocol header region for the port.  The
 	 * port expects a 4KB DMA-mapped memory region that is 4K aligned.
@@ -5063,12 +5089,14 @@ lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
 	rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
 	rpi_hdr->page_count = 1;
 	spin_lock_irq(&phba->hbalock);
-	rpi_hdr->start_rpi = phba->sli4_hba.next_rpi;
+
+	/* The rpi_hdr stores the logical index only. */
+	rpi_hdr->start_rpi = curr_rpi_range;
 	list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
 
 	/*
-	 * The next_rpi stores the next module-64 rpi value to post
-	 * in any subsequent rpi memory region postings.
+	 * The next_rpi stores the next logical module-64 rpi value used
+	 * to post physical rpis in subsequent rpi postings.
 	 */
 	phba->sli4_hba.next_rpi += rpi_count;
 	spin_unlock_irq(&phba->hbalock);
@@ -5087,15 +5115,18 @@ lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to remove all memory resources allocated
- * to support rpis. This routine presumes the caller has released all
- * rpis consumed by fabric or port logins and is prepared to have
- * the header pages removed.
+ * to support rpis for SLI4 ports not supporting extents. This routine
+ * presumes the caller has released all rpis consumed by fabric or port
+ * logins and is prepared to have the header pages removed.
  **/
 void
 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
 {
 	struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
 
+	if (!phba->sli4_hba.rpi_hdrs_in_use)
+		goto exit;
+
 	list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
 				 &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
 		list_del(&rpi_hdr->list);
@@ -5104,7 +5135,9 @@ lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
 		kfree(rpi_hdr->dmabuf);
 		kfree(rpi_hdr);
 	}
-	phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.rpi_base;
+ exit:
+	/* There are no rpis available to the port now. */
+	phba->sli4_hba.next_rpi = 0;
 }
 
 /**
@@ -5873,6 +5906,8 @@ lpfc_sli4_read_config(struct lpfc_hba *phba)
 		rc = -EIO;
 	} else {
 		rd_config = &pmb->u.mqe.un.rd_config;
+		phba->sli4_hba.extents_in_use =
+			bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
 		phba->sli4_hba.max_cfg_param.max_xri =
 			bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
 		phba->sli4_hba.max_cfg_param.xri_base =
@@ -5891,8 +5926,6 @@ lpfc_sli4_read_config(struct lpfc_hba *phba)
 			bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
 		phba->sli4_hba.max_cfg_param.max_fcfi =
 			bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
-		phba->sli4_hba.max_cfg_param.fcfi_base =
-			bf_get(lpfc_mbx_rd_conf_fcfi_base, rd_config);
 		phba->sli4_hba.max_cfg_param.max_eq =
 			bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
 		phba->sli4_hba.max_cfg_param.max_rq =
@@ -5910,11 +5943,13 @@ lpfc_sli4_read_config(struct lpfc_hba *phba)
 				(phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
 		phba->max_vports = phba->max_vpi;
 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
-				"2003 cfg params XRI(B:%d M:%d), "
+				"2003 cfg params Extents? %d "
+				"XRI(B:%d M:%d), "
 				"VPI(B:%d M:%d) "
 				"VFI(B:%d M:%d) "
 				"RPI(B:%d M:%d) "
-				"FCFI(B:%d M:%d)\n",
+				"FCFI(Count:%d)\n",
+				phba->sli4_hba.extents_in_use,