scsi: lpfc: Add SLI-4 if_type=6 support to the code base

New hardware supports a SLI-4 interface, but with a new if_type
variant of 6.

If_type=6 has a different PCI BAR map, separate EQ/CQ doorbells,
and some changes in doorbell formats.

Add the changes for the if_type into headers, adapter initialization
and control flows. Add new eq and cq handlers.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_bsg.c

@@ -3867,7 +3867,7 @@ lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job,
 				"ext_buf_cnt:%d\n", ext_buf_cnt);
 	} else {
 		/* sanity check on interface type for support */
-		if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
+		if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
 		    LPFC_SLI_INTF_IF_TYPE_2) {
 			rc = -ENODEV;
 			goto job_error;
@@ -4053,7 +4053,7 @@ lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job,
 				"ext_buf_cnt:%d\n", ext_buf_cnt);
 	} else {
 		/* sanity check on interface type for support */
-		if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
+		if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
 		    LPFC_SLI_INTF_IF_TYPE_2)
 			return -ENODEV;
 		/* nemb_tp == nemb_hbd */

drivers/scsi/lpfc/lpfc_hw4.h

@@ -84,6 +84,7 @@ struct lpfc_sli_intf {
 #define LPFC_SLI_INTF_IF_TYPE_0		0
 #define LPFC_SLI_INTF_IF_TYPE_1		1
 #define LPFC_SLI_INTF_IF_TYPE_2		2
+#define LPFC_SLI_INTF_IF_TYPE_6		6
 #define lpfc_sli_intf_sli_family_SHIFT		8
 #define lpfc_sli_intf_sli_family_MASK		0x0000000F
 #define lpfc_sli_intf_sli_family_WORD		word0
@@ -731,11 +732,13 @@ struct lpfc_register {
  * register sets depending on the UCNA Port's reported if_type
  * value.  For UCNA ports running SLI4 and if_type 0, they reside in
  * BAR4.  For UCNA ports running SLI4 and if_type 2, they reside in
- * BAR0.  The offsets are the same so the driver must account for
- * any base address difference.
+ * BAR0.  For FC ports running SLI4 and if_type 6, they reside in
+ * BAR2. The offsets and base address are different,  so the driver
+ * has to compute the register addresses accordingly
  */
 #define LPFC_ULP0_RQ_DOORBELL		0x00A0
 #define LPFC_ULP1_RQ_DOORBELL		0x00C0
+#define LPFC_IF6_RQ_DOORBELL		0x0080
 #define lpfc_rq_db_list_fm_num_posted_SHIFT	24
 #define lpfc_rq_db_list_fm_num_posted_MASK	0x00FF
 #define lpfc_rq_db_list_fm_num_posted_WORD	word0
@@ -770,6 +773,20 @@ struct lpfc_register {
 #define lpfc_wq_db_ring_fm_id_MASK              0xFFFF
 #define lpfc_wq_db_ring_fm_id_WORD              word0
 
+#define LPFC_IF6_WQ_DOORBELL		0x0040
+#define lpfc_if6_wq_db_list_fm_num_posted_SHIFT	24
+#define lpfc_if6_wq_db_list_fm_num_posted_MASK	0x00FF
+#define lpfc_if6_wq_db_list_fm_num_posted_WORD	word0
+#define lpfc_if6_wq_db_list_fm_dpp_SHIFT	23
+#define lpfc_if6_wq_db_list_fm_dpp_MASK		0x0001
+#define lpfc_if6_wq_db_list_fm_dpp_WORD		word0
+#define lpfc_if6_wq_db_list_fm_dpp_id_SHIFT	16
+#define lpfc_if6_wq_db_list_fm_dpp_id_MASK	0x001F
+#define lpfc_if6_wq_db_list_fm_dpp_id_WORD	word0
+#define lpfc_if6_wq_db_list_fm_id_SHIFT		0
+#define lpfc_if6_wq_db_list_fm_id_MASK		0xFFFF
+#define lpfc_if6_wq_db_list_fm_id_WORD		word0
+
 #define LPFC_EQCQ_DOORBELL		0x0120
 #define lpfc_eqcq_doorbell_se_SHIFT		31
 #define lpfc_eqcq_doorbell_se_MASK		0x0001
@@ -805,6 +822,38 @@ struct lpfc_register {
 #define LPFC_CQID_HI_FIELD_SHIFT		10
 #define LPFC_EQID_HI_FIELD_SHIFT		9
 
+#define LPFC_IF6_CQ_DOORBELL			0x00C0
+#define lpfc_if6_cq_doorbell_se_SHIFT		31
+#define lpfc_if6_cq_doorbell_se_MASK		0x0001
+#define lpfc_if6_cq_doorbell_se_WORD		word0
+#define LPFC_IF6_CQ_SOLICIT_ENABLE_OFF		0
+#define LPFC_IF6_CQ_SOLICIT_ENABLE_ON		1
+#define lpfc_if6_cq_doorbell_arm_SHIFT		29
+#define lpfc_if6_cq_doorbell_arm_MASK		0x0001
+#define lpfc_if6_cq_doorbell_arm_WORD		word0
+#define lpfc_if6_cq_doorbell_num_released_SHIFT	16
+#define lpfc_if6_cq_doorbell_num_released_MASK	0x1FFF
+#define lpfc_if6_cq_doorbell_num_released_WORD	word0
+#define lpfc_if6_cq_doorbell_cqid_SHIFT		0
+#define lpfc_if6_cq_doorbell_cqid_MASK		0xFFFF
+#define lpfc_if6_cq_doorbell_cqid_WORD		word0
+
+#define LPFC_IF6_EQ_DOORBELL			0x0120
+#define lpfc_if6_eq_doorbell_io_SHIFT		31
+#define lpfc_if6_eq_doorbell_io_MASK		0x0001
+#define lpfc_if6_eq_doorbell_io_WORD		word0
+#define LPFC_IF6_EQ_INTR_OVERRIDE_OFF		0
+#define LPFC_IF6_EQ_INTR_OVERRIDE_ON		1
+#define lpfc_if6_eq_doorbell_arm_SHIFT		29
+#define lpfc_if6_eq_doorbell_arm_MASK		0x0001
+#define lpfc_if6_eq_doorbell_arm_WORD		word0
+#define lpfc_if6_eq_doorbell_num_released_SHIFT	16
+#define lpfc_if6_eq_doorbell_num_released_MASK	0x1FFF
+#define lpfc_if6_eq_doorbell_num_released_WORD	word0
+#define lpfc_if6_eq_doorbell_eqid_SHIFT		0
+#define lpfc_if6_eq_doorbell_eqid_MASK		0x0FFF
+#define lpfc_if6_eq_doorbell_eqid_WORD		word0
+
 #define LPFC_BMBX			0x0160
 #define lpfc_bmbx_addr_SHIFT		2
 #define lpfc_bmbx_addr_MASK		0x3FFFFFFF
@@ -817,6 +866,7 @@ struct lpfc_register {
 #define lpfc_bmbx_rdy_WORD		word0
 
 #define LPFC_MQ_DOORBELL			0x0140
+#define LPFC_IF6_MQ_DOORBELL			0x0160
 #define lpfc_mq_doorbell_num_posted_SHIFT	16
 #define lpfc_mq_doorbell_num_posted_MASK	0x3FFF
 #define lpfc_mq_doorbell_num_posted_WORD	word0

drivers/scsi/lpfc/lpfc_init.c

@@ -1761,7 +1761,7 @@ lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
 	int rc;
 	uint32_t intr_mode;
 
-	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
+	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
 	    LPFC_SLI_INTF_IF_TYPE_2) {
 		/*
 		 * On error status condition, driver need to wait for port
@@ -1892,6 +1892,7 @@ lpfc_handle_eratt_s4(struct lpfc_hba *phba)
 		break;
 
 	case LPFC_SLI_INTF_IF_TYPE_2:
+	case LPFC_SLI_INTF_IF_TYPE_6:
 		pci_rd_rc1 = lpfc_readl(
 				phba->sli4_hba.u.if_type2.STATUSregaddr,
 				&portstat_reg.word0);
@@ -6018,7 +6019,7 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
 		return -ENOMEM;
 
 	/* IF Type 2 ports get initialized now. */
-	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
+	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
 	    LPFC_SLI_INTF_IF_TYPE_2) {
 		rc = lpfc_pci_function_reset(phba);
 		if (unlikely(rc)) {
@@ -7348,6 +7349,7 @@ lpfc_sli4_post_status_check(struct lpfc_hba *phba)
 			}
 			break;
 		case LPFC_SLI_INTF_IF_TYPE_2:
+		case LPFC_SLI_INTF_IF_TYPE_6:
 			/* Final checks.  The port status should be clean. */
 			if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
 				&reg_data.word0) ||
@@ -7438,6 +7440,28 @@ lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
 		phba->sli4_hba.BMBXregaddr =
 			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
 		break;
+	case LPFC_SLI_INTF_IF_TYPE_6:
+		phba->sli4_hba.u.if_type2.EQDregaddr =
+			phba->sli4_hba.conf_regs_memmap_p +
+						LPFC_CTL_PORT_EQ_DELAY_OFFSET;
+		phba->sli4_hba.u.if_type2.ERR1regaddr =
+			phba->sli4_hba.conf_regs_memmap_p +
+						LPFC_CTL_PORT_ER1_OFFSET;
+		phba->sli4_hba.u.if_type2.ERR2regaddr =
+			phba->sli4_hba.conf_regs_memmap_p +
+						LPFC_CTL_PORT_ER2_OFFSET;
+		phba->sli4_hba.u.if_type2.CTRLregaddr =
+			phba->sli4_hba.conf_regs_memmap_p +
+						LPFC_CTL_PORT_CTL_OFFSET;
+		phba->sli4_hba.u.if_type2.STATUSregaddr =
+			phba->sli4_hba.conf_regs_memmap_p +
+						LPFC_CTL_PORT_STA_OFFSET;
+		phba->sli4_hba.PSMPHRregaddr =
+			phba->sli4_hba.conf_regs_memmap_p +
+						LPFC_CTL_PORT_SEM_OFFSET;
+		phba->sli4_hba.BMBXregaddr =
+			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
+		break;
 	case LPFC_SLI_INTF_IF_TYPE_1:
 	default:
 		dev_printk(KERN_ERR, &phba->pcidev->dev,
@@ -7451,20 +7475,43 @@ lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
  * @phba: pointer to lpfc hba data structure.
  *
- * This routine is invoked to set up SLI4 BAR1 control status register (CSR)
- * memory map.
+ * This routine is invoked to set up SLI4 BAR1 register memory map.
  **/
 static void
-lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba)
+lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
 {
-	phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
-		LPFC_SLIPORT_IF0_SMPHR;
-	phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
-		LPFC_HST_ISR0;
-	phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
-		LPFC_HST_IMR0;
-	phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
-		LPFC_HST_ISCR0;
+	switch (if_type) {
+	case LPFC_SLI_INTF_IF_TYPE_0:
+		phba->sli4_hba.PSMPHRregaddr =
+			phba->sli4_hba.ctrl_regs_memmap_p +
+			LPFC_SLIPORT_IF0_SMPHR;
+		phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
+			LPFC_HST_ISR0;
+		phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
+			LPFC_HST_IMR0;
+		phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
+			LPFC_HST_ISCR0;
+		break;
+	case LPFC_SLI_INTF_IF_TYPE_6:
+		phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
+			LPFC_IF6_RQ_DOORBELL;
+		phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
+			LPFC_IF6_WQ_DOORBELL;
+		phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
+			LPFC_IF6_CQ_DOORBELL;
+		phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
+			LPFC_IF6_EQ_DOORBELL;
+		phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
+			LPFC_IF6_MQ_DOORBELL;
+		break;
+	case LPFC_SLI_INTF_IF_TYPE_2:
+	case LPFC_SLI_INTF_IF_TYPE_1:
+	default:
+		dev_err(&phba->pcidev->dev,
+			   "FATAL - unsupported SLI4 interface type - %d\n",
+			   if_type);
+		break;
+	}
 }
 
 /**
@@ -7729,7 +7776,7 @@ lpfc_sli4_read_config(struct lpfc_hba *phba)
 
 	/* Update link speed if forced link speed is supported */
 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
-	if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
+	if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
 		forced_link_speed =
 			bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);
 		if (forced_link_speed) {
@@ -7789,7 +7836,7 @@ lpfc_sli4_read_config(struct lpfc_hba *phba)
 		phba->cfg_hba_queue_depth = length;
 	}
 
-	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
+	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
 	    LPFC_SLI_INTF_IF_TYPE_2)
 		goto read_cfg_out;
 
@@ -7903,6 +7950,7 @@ lpfc_setup_endian_order(struct lpfc_hba *phba)
 		}
 		mempool_free(mboxq, phba->mbox_mem_pool);
 		break;
+	case LPFC_SLI_INTF_IF_TYPE_6:
 	case LPFC_SLI_INTF_IF_TYPE_2:
 	case LPFC_SLI_INTF_IF_TYPE_1:
 	default:
@@ -9314,6 +9362,7 @@ lpfc_pci_function_reset(struct lpfc_hba *phba)
 		}
 		break;
 	case LPFC_SLI_INTF_IF_TYPE_2:
+	case LPFC_SLI_INTF_IF_TYPE_6:
 wait:
 		/*
 		 * Poll the Port Status Register and wait for RDY for
@@ -9469,7 +9518,7 @@ lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
 	} else {
 		phba->pci_bar0_map = pci_resource_start(pdev, 1);
 		bar0map_len = pci_resource_len(pdev, 1);
-		if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
+		if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
 			dev_printk(KERN_ERR, &pdev->dev,
 			   "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
 			goto out;
@@ -9506,13 +9555,32 @@ lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
 			}
 			phba->pci_bar2_memmap_p =
 					 phba->sli4_hba.ctrl_regs_memmap_p;
-			lpfc_sli4_bar1_register_memmap(phba);
+			lpfc_sli4_bar1_register_memmap(phba, if_type);
 		} else {
 			error = -ENOMEM;
 			goto out_iounmap_conf;
 		}
 	}
 
+	if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
+	    (pci_resource_start(pdev, PCI_64BIT_BAR2))) {
+		/*
+		 * Map SLI4 if type 6 HBA Doorbell Register base to a kernel
+		 * virtual address and setup the registers.
+		 */
+		phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
+		bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
+		phba->sli4_hba.drbl_regs_memmap_p =
+				ioremap(phba->pci_bar1_map, bar1map_len);
+		if (!phba->sli4_hba.drbl_regs_memmap_p) {
+			dev_err(&pdev->dev,
+			   "ioremap failed for SLI4 HBA doorbell registers.\n");
+			goto out_iounmap_conf;
+		}
+		phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
+		lpfc_sli4_bar1_register_memmap(phba, if_type);
+	}
+
 	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
 		if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {
 			/*
@@ -9544,10 +9612,20 @@ lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
 	}
 
 	/* Set up the EQ/CQ register handeling functions now */
-	if (if_type <= LPFC_SLI_INTF_IF_TYPE_2) {
+	switch (if_type) {
+	case LPFC_SLI_INTF_IF_TYPE_0:
+	case LPFC_SLI_INTF_IF_TYPE_2:
 		phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
 		phba->sli4_hba.sli4_eq_release = lpfc_sli4_eq_release;
 		phba->sli4_hba.sli4_cq_release = lpfc_sli4_cq_release;
+		break;
+	case LPFC_SLI_INTF_IF_TYPE_6:
+		phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
+		phba->sli4_hba.sli4_eq_release = lpfc_sli4_if6_eq_release;
+		phba->sli4_hba.sli4_cq_release = lpfc_sli4_if6_cq_release;
+		break;
+	default:
+		break;
 	}
 
 	return 0;
@@ -9584,6 +9662,10 @@ lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
 	case LPFC_SLI_INTF_IF_TYPE_2:
 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
 		break;
+	case LPFC_SLI_INTF_IF_TYPE_6:
+		iounmap(phba->sli4_hba.drbl_regs_memmap_p);
+		iounmap(phba->sli4_hba.conf_regs_memmap_p);
+		break;
 	case LPFC_SLI_INTF_IF_TYPE_1:
 	default:
 		dev_printk(KERN_ERR, &phba->pcidev->dev,
@@ -11288,7 +11370,7 @@ lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
 	const struct firmware *fw;
 
 	/* Only supported on SLI4 interface type 2 for now */
-	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
+	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
 	    LPFC_SLI_INTF_IF_TYPE_2)
 		return -EPERM;
 

drivers/scsi/lpfc/lpfc_sli.c

@@ -313,6 +313,25 @@ lpfc_sli4_eq_clr_intr(struct lpfc_queue *q)
 	writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
 }
 
+/**
+ * lpfc_sli4_if6_eq_clr_intr - Turn off interrupts from this EQ
+ * @q: The Event Queue to disable interrupts
+ *
+ **/
+inline void
+lpfc_sli4_if6_eq_clr_intr(struct lpfc_queue *q)
+{
+	struct lpfc_register doorbell;
+
+	doorbell.word0 = 0;
+	bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
+	bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
+	bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
+		(q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
+	bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
+	writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
+}
+
 /**
  * lpfc_sli4_eq_release - Indicates the host has finished processing an EQ
  * @q: The Event Queue that the host has completed processing for.
@@ -367,6 +386,55 @@ lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm)
 	return released;
 }
 
+/**
+ * lpfc_sli4_if6_eq_release - Indicates the host has finished processing an EQ
+ * @q: The Event Queue that the host has completed processing for.
+ * @arm: Indicates whether the host wants to arms this CQ.
+ *
+ * This routine will mark all Event Queue Entries on @q, from the last
+ * known completed entry to the last entry that was processed, as completed
+ * by clearing the valid bit for each completion queue entry. Then it will
+ * notify the HBA, by ringing the doorbell, that the EQEs have been processed.
+ * The internal host index in the @q will be updated by this routine to indicate
+ * that the host has finished processing the entries. The @arm parameter
+ * indicates that the queue should be rearmed when ringing the doorbell.
+ *
+ * This function will return the number of EQEs that were popped.
+ **/
+uint32_t
+lpfc_sli4_if6_eq_release(struct lpfc_queue *q, bool arm)
+{
+	uint32_t released = 0;
+	struct lpfc_eqe *temp_eqe;
+	struct lpfc_register doorbell;
+
+	/* sanity check on queue memory */
+	if (unlikely(!q))
+		return 0;
+
+	/* while there are valid entries */
+	while (q->hba_index != q->host_index) {
+		temp_eqe = q->qe[q->host_index].eqe;
+		bf_set_le32(lpfc_eqe_valid, temp_eqe, 0);
+		released++;
+		q->host_index = ((q->host_index + 1) % q->entry_count);
+	}
+	if (unlikely(released == 0 && !arm))
+		return 0;
+
+	/* ring doorbell for number popped */
+	doorbell.word0 = 0;
+	if (arm)
+		bf_set(lpfc_if6_eq_doorbell_arm, &doorbell, 1);
+	bf_set(lpfc_if6_eq_doorbell_num_released, &doorbell, released);
+	bf_set(lpfc_if6_eq_doorbell_eqid, &doorbell, q->queue_id);
+	writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
+	/* PCI read to flush PCI pipeline on re-arming for INTx mode */
+	if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM))
+		readl(q->phba->sli4_hba.EQDBregaddr);
+	return released;
+}
+
 /**
  * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ
  * @q: The Completion Queue to get the first valid CQE from
@@ -457,6 +525,51 @@ lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm)
 	return released;
 }
 
+/**
+ * lpfc_sli4_if6_cq_release - Indicates the host has finished processing a CQ
+ * @q: The Completion Queue that the host has completed processing for.
+ * @arm: Indicates whether the host wants to arms this CQ.
+ *
+ * This routine will mark all Completion queue entries on @q, from the last
+ * known completed entry to the last entry that was processed, as completed
+ * by clearing the valid bit for each completion queue entry. Then it will
+ * notify the HBA, by ringing the doorbell, that the CQEs have been processed.
+ * The internal host index in the @q will be updated by this routine to indicate
+ * that the host has finished processing the entries. The @arm parameter
+ * indicates that the queue should be rearmed when ringing the doorbell.
+ *
+ * This function will return the number of CQEs that were released.
+ **/
+uint32_t
+lpfc_sli4_if6_cq_release(struct lpfc_queue *q, bool arm)
+{
+	uint32_t released = 0;
+	struct lpfc_cqe *temp_qe;
+	struct lpfc_register doorbell;
+
+	/* sanity check on queue memory */
+	if (unlikely(!q))
+		return 0;
+	/* while there are valid entries */
+	while (q->hba_index != q->host_index) {
+		temp_qe = q->qe[q->host_index].cqe;
+		bf_set_le32(lpfc_cqe_valid, temp_qe, 0);
+		released++;
+		q->host_index = ((q->host_index + 1) % q->entry_count);
+	}
+	if (unlikely(released == 0 && !arm))
+		return 0;
+
+	/* ring doorbell for number popped */
+	doorbell.word0 = 0;
+	if (arm)
+		bf_set(lpfc_if6_cq_doorbell_arm, &doorbell, 1);
+	bf_set(lpfc_if6_cq_doorbell_num_released, &doorbell, released);
+	bf_set(lpfc_if6_cq_doorbell_cqid, &doorbell, q->queue_id);
+	writel(doorbell.word0, q->phba->sli4_hba.CQDBregaddr);
+	return released;
+}
+
 /**
  * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue
  * @q: The Header Receive Queue to operate on.
@@ -2331,7 +2444,7 @@ lpfc_sli4_unreg_rpi_cmpl_clr(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 	if (pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) {
 		if (phba->sli_rev == LPFC_SLI_REV4 &&
 		    (bf_get(lpfc_sli_intf_if_type,
-		     &phba->sli4_hba.sli_intf) ==
+		     &phba->sli4_hba.sli_intf) >=
 		     LPFC_SLI_INTF_IF_TYPE_2)) {
 			if (ndlp) {
 				lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
@@ -8792,7 +8905,7 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
 					iocbq->context2)->virt);
 		if_type = bf_get(lpfc_sli_intf_if_type,
 					&phba->sli4_hba.sli_intf);
-		if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
+		if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
 			if (pcmd && (*pcmd == ELS_CMD_FLOGI ||
 				*pcmd == ELS_CMD_SCR ||
 				*pcmd == ELS_CMD_FDISC ||
@@ -9089,7 +9202,7 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
 
 		if_type = bf_get(lpfc_sli_intf_if_type,
 					&phba->sli4_hba.sli_intf);
-		if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
+		if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
 			if (iocbq->vport->fc_flag & FC_PT2PT) {
 				bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1);
 				bf_set(els_rsp64_sid, &wqe->xmit_els_rsp,
@@ -11673,6 +11786,7 @@ lpfc_sli4_eratt_read(struct lpfc_hba *phba)
 		}
 		break;
 	case LPFC_SLI_INTF_IF_TYPE_2:
+	case LPFC_SLI_INTF_IF_TYPE_6:
 		if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
 			&portstat_reg.word0) ||
 			lpfc_readl(phba->sli4_hba.PSMPHRregaddr,

drivers/scsi/lpfc/lpfc_sli4.h

@@ -856,6 +856,9 @@ int lpfc_sli4_init_vpi(struct lpfc_vport *);
 inline void lpfc_sli4_eq_clr_intr(struct lpfc_queue *);
 uint32_t lpfc_sli4_cq_release(struct lpfc_queue *, bool);
 uint32_t lpfc_sli4_eq_release(struct lpfc_queue *, bool);
+inline void lpfc_sli4_if6_eq_clr_intr(struct lpfc_queue *q);
+uint32_t lpfc_sli4_if6_cq_release(struct lpfc_queue *q, bool arm);
+uint32_t lpfc_sli4_if6_eq_release(struct lpfc_queue *q, bool arm);
 void lpfc_sli4_fcfi_unreg(struct lpfc_hba *, uint16_t);
 int lpfc_sli4_fcf_scan_read_fcf_rec(struct lpfc_hba *, uint16_t);
 int lpfc_sli4_fcf_rr_read_fcf_rec(struct lpfc_hba *, uint16_t);