/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2014 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"
#include "qla_target.h"
#include <linux/utsname.h>

static int qla2x00_sns_ga_nxt(scsi_qla_host_t *, fc_port_t *);
static int qla2x00_sns_gid_pt(scsi_qla_host_t *, sw_info_t *);
static int qla2x00_sns_gpn_id(scsi_qla_host_t *, sw_info_t *);
static int qla2x00_sns_gnn_id(scsi_qla_host_t *, sw_info_t *);
static int qla2x00_sns_rft_id(scsi_qla_host_t *);
static int qla2x00_sns_rnn_id(scsi_qla_host_t *);
static int qla_async_rftid(scsi_qla_host_t *, port_id_t *);
static int qla_async_rffid(scsi_qla_host_t *, port_id_t *, u8, u8);
static int qla_async_rnnid(scsi_qla_host_t *, port_id_t *, u8*);
static int qla_async_rsnn_nn(scsi_qla_host_t *);

/**
 * qla2x00_prep_ms_iocb() - Prepare common MS/CT IOCB fields for SNS CT query.
 * @vha: HA context
 * @arg: CT arguments
 *
 * Returns a pointer to the @vha's ms_iocb.
 */
void *
qla2x00_prep_ms_iocb(scsi_qla_host_t *vha, struct ct_arg *arg)
{
	struct qla_hw_data *ha = vha->hw;
	ms_iocb_entry_t *ms_pkt;

	ms_pkt = (ms_iocb_entry_t *)arg->iocb;
	memset(ms_pkt, 0, sizeof(ms_iocb_entry_t));

	ms_pkt->entry_type = MS_IOCB_TYPE;
	ms_pkt->entry_count = 1;
	SET_TARGET_ID(ha, ms_pkt->loop_id, SIMPLE_NAME_SERVER);
	ms_pkt->control_flags = cpu_to_le16(CF_READ | CF_HEAD_TAG);
	ms_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
	ms_pkt->cmd_dsd_count = cpu_to_le16(1);
	ms_pkt->total_dsd_count = cpu_to_le16(2);
	ms_pkt->rsp_bytecount = cpu_to_le32(arg->rsp_size);
	ms_pkt->req_bytecount = cpu_to_le32(arg->req_size);

	ms_pkt->dseg_req_address[0] = cpu_to_le32(LSD(arg->req_dma));
	ms_pkt->dseg_req_address[1] = cpu_to_le32(MSD(arg->req_dma));
	ms_pkt->dseg_req_length = ms_pkt->req_bytecount;

	ms_pkt->dseg_rsp_address[0] = cpu_to_le32(LSD(arg->rsp_dma));
	ms_pkt->dseg_rsp_address[1] = cpu_to_le32(MSD(arg->rsp_dma));
	ms_pkt->dseg_rsp_length = ms_pkt->rsp_bytecount;

	vha->qla_stats.control_requests++;

	return (ms_pkt);
}

/**
 * qla24xx_prep_ms_iocb() - Prepare common CT IOCB fields for SNS CT query.
 * @vha: HA context
 * @arg: CT arguments
 *
 * Returns a pointer to the @ha's ms_iocb.
 */
void *
qla24xx_prep_ms_iocb(scsi_qla_host_t *vha, struct ct_arg *arg)
{
	struct qla_hw_data *ha = vha->hw;
	struct ct_entry_24xx *ct_pkt;

	ct_pkt = (struct ct_entry_24xx *)arg->iocb;
	memset(ct_pkt, 0, sizeof(struct ct_entry_24xx));

	ct_pkt->entry_type = CT_IOCB_TYPE;
	ct_pkt->entry_count = 1;
	ct_pkt->nport_handle = cpu_to_le16(arg->nport_handle);
	ct_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
	ct_pkt->cmd_dsd_count = cpu_to_le16(1);
	ct_pkt->rsp_dsd_count = cpu_to_le16(1);
	ct_pkt->rsp_byte_count = cpu_to_le32(arg->rsp_size);
	ct_pkt->cmd_byte_count = cpu_to_le32(arg->req_size);

	ct_pkt->dseg_0_address[0] = cpu_to_le32(LSD(arg->req_dma));
	ct_pkt->dseg_0_address[1] = cpu_to_le32(MSD(arg->req_dma));
	ct_pkt->dseg_0_len = ct_pkt->cmd_byte_count;

	ct_pkt->dseg_1_address[0] = cpu_to_le32(LSD(arg->rsp_dma));
	ct_pkt->dseg_1_address[1] = cpu_to_le32(MSD(arg->rsp_dma));
	ct_pkt->dseg_1_len = ct_pkt->rsp_byte_count;
	ct_pkt->vp_index = vha->vp_idx;

	vha->qla_stats.control_requests++;

	return (ct_pkt);
}

/**
 * qla2x00_prep_ct_req() - Prepare common CT request fields for SNS query.
 * @p: CT request buffer
 * @cmd: GS command
 * @rsp_size: response size in bytes
 *
 * Returns a pointer to the intitialized @ct_req.
 */
static inline struct ct_sns_req *
qla2x00_prep_ct_req(struct ct_sns_pkt *p, uint16_t cmd, uint16_t rsp_size)
{
	memset(p, 0, sizeof(struct ct_sns_pkt));

	p->p.req.header.revision = 0x01;
	p->p.req.header.gs_type = 0xFC;
	p->p.req.header.gs_subtype = 0x02;
	p->p.req.command = cpu_to_be16(cmd);
	p->p.req.max_rsp_size = cpu_to_be16((rsp_size - 16) / 4);

	return &p->p.req;
}

int
qla2x00_chk_ms_status(scsi_qla_host_t *vha, ms_iocb_entry_t *ms_pkt,
    struct ct_sns_rsp *ct_rsp, const char *routine)
{
	int rval;
	uint16_t comp_status;
	struct qla_hw_data *ha = vha->hw;
	bool lid_is_sns = false;

	rval = QLA_FUNCTION_FAILED;
	if (ms_pkt->entry_status != 0) {
		ql_dbg(ql_dbg_disc, vha, 0x2031,
		    "%s failed, error status (%x) on port_id: %02x%02x%02x.\n",
		    routine, ms_pkt->entry_status, vha->d_id.b.domain,
		    vha->d_id.b.area, vha->d_id.b.al_pa);
	} else {
		if (IS_FWI2_CAPABLE(ha))
			comp_status = le16_to_cpu(
			    ((struct ct_entry_24xx *)ms_pkt)->comp_status);
		else
			comp_status = le16_to_cpu(ms_pkt->status);
		switch (comp_status) {
		case CS_COMPLETE:
		case CS_DATA_UNDERRUN:
		case CS_DATA_OVERRUN:		/* Overrun? */
			if (ct_rsp->header.response !=
			    cpu_to_be16(CT_ACCEPT_RESPONSE)) {
				ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x2077,
				    "%s failed rejected request on port_id: %02x%02x%02x Completion status 0x%x, response 0x%x\n",
				    routine, vha->d_id.b.domain,
				    vha->d_id.b.area, vha->d_id.b.al_pa,
				    comp_status, ct_rsp->header.response);
				ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha,
				    0x2078, (uint8_t *)&ct_rsp->header,
				    sizeof(struct ct_rsp_hdr));
				rval = QLA_INVALID_COMMAND;
			} else
				rval = QLA_SUCCESS;
			break;
		case CS_PORT_LOGGED_OUT:
			if (IS_FWI2_CAPABLE(ha)) {
				if (le16_to_cpu(ms_pkt->loop_id.extended) ==
				    NPH_SNS)
					lid_is_sns = true;
			} else {
				if (le16_to_cpu(ms_pkt->loop_id.extended) ==
				    SIMPLE_NAME_SERVER)
					lid_is_sns = true;
			}
			if (lid_is_sns) {
				ql_dbg(ql_dbg_async, vha, 0x502b,
					"%s failed, Name server has logged out",
					routine);
				rval = QLA_NOT_LOGGED_IN;
				set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
				set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
			}
			break;
		case CS_TIMEOUT:
			rval = QLA_FUNCTION_TIMEOUT;
			/* fall through */
		default:
			ql_dbg(ql_dbg_disc, vha, 0x2033,
			    "%s failed, completion status (%x) on port_id: "
			    "%02x%02x%02x.\n", routine, comp_status,
			    vha->d_id.b.domain, vha->d_id.b.area,
			    vha->d_id.b.al_pa);
			break;
		}
	}
	return rval;
}

/**
 * qla2x00_ga_nxt() - SNS scan for fabric devices via GA_NXT command.
 * @vha: HA context
 * @fcport: fcport entry to updated
 *
 * Returns 0 on success.
 */
int
qla2x00_ga_nxt(scsi_qla_host_t *vha, fc_port_t *fcport)
{
	int		rval;

	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;
	struct qla_hw_data *ha = vha->hw;
	struct ct_arg arg;

	if (IS_QLA2100(ha) || IS_QLA2200(ha))
		return qla2x00_sns_ga_nxt(vha, fcport);

	arg.iocb = ha->ms_iocb;
	arg.req_dma = ha->ct_sns_dma;
	arg.rsp_dma = ha->ct_sns_dma;
	arg.req_size = GA_NXT_REQ_SIZE;
	arg.rsp_size = GA_NXT_RSP_SIZE;
	arg.nport_handle = NPH_SNS;

	/* Issue GA_NXT */
	/* Prepare common MS IOCB */
	ms_pkt = ha->isp_ops->prep_ms_iocb(vha, &arg);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_req(ha->ct_sns, GA_NXT_CMD,
	    GA_NXT_RSP_SIZE);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare CT arguments -- port_id */
	ct_req->req.port_id.port_id[0] = fcport->d_id.b.domain;
	ct_req->req.port_id.port_id[1] = fcport->d_id.b.area;
	ct_req->req.port_id.port_id[2] = fcport->d_id.b.al_pa;

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x2062,
		    "GA_NXT issue IOCB failed (%d).\n", rval);
	} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp, "GA_NXT") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;
	} else {
		/* Populate fc_port_t entry. */
		fcport->d_id.b.domain = ct_rsp->rsp.ga_nxt.port_id[0];
		fcport->d_id.b.area = ct_rsp->rsp.ga_nxt.port_id[1];
		fcport->d_id.b.al_pa = ct_rsp->rsp.ga_nxt.port_id[2];

		memcpy(fcport->node_name, ct_rsp->rsp.ga_nxt.node_name,
		    WWN_SIZE);
		memcpy(fcport->port_name, ct_rsp->rsp.ga_nxt.port_name,
		    WWN_SIZE);

		fcport->fc4_type = (ct_rsp->rsp.ga_nxt.fc4_types[2] & BIT_0) ?
		    FC4_TYPE_FCP_SCSI : FC4_TYPE_OTHER;

		if (ct_rsp->rsp.ga_nxt.port_type != NS_N_PORT_TYPE &&
		    ct_rsp->rsp.ga_nxt.port_type != NS_NL_PORT_TYPE)
			fcport->d_id.b.domain = 0xf0;

		ql_dbg(ql_dbg_disc, vha, 0x2063,
		    "GA_NXT entry - nn %8phN pn %8phN "
		    "port_id=%02x%02x%02x.\n",
		    fcport->node_name, fcport->port_name,
		    fcport->d_id.b.domain, fcport->d_id.b.area,
		    fcport->d_id.b.al_pa);
	}

	return (rval);
}

static inline int
qla2x00_gid_pt_rsp_size(scsi_qla_host_t *vha)
{
	return vha->hw->max_fibre_devices * 4 + 16;
}

/**
 * qla2x00_gid_pt() - SNS scan for fabric devices via GID_PT command.
 * @vha: HA context
 * @list: switch info entries to populate
 *
 * NOTE: Non-Nx_Ports are not requested.
 *
 * Returns 0 on success.
 */
int
qla2x00_gid_pt(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval;
	uint16_t	i;

	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;

	struct ct_sns_gid_pt_data *gid_data;
	struct qla_hw_data *ha = vha->hw;
	uint16_t gid_pt_rsp_size;
	struct ct_arg arg;

	if (IS_QLA2100(ha) || IS_QLA2200(ha))
		return qla2x00_sns_gid_pt(vha, list);

	gid_data = NULL;
	gid_pt_rsp_size = qla2x00_gid_pt_rsp_size(vha);

	arg.iocb = ha->ms_iocb;
	arg.req_dma = ha->ct_sns_dma;
	arg.rsp_dma = ha->ct_sns_dma;
	arg.req_size = GID_PT_REQ_SIZE;
	arg.rsp_size = gid_pt_rsp_size;
	arg.nport_handle = NPH_SNS;

	/* Issue GID_PT */
	/* Prepare common MS IOCB */
	ms_pkt = ha->isp_ops->prep_ms_iocb(vha, &arg);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_req(ha->ct_sns, GID_PT_CMD, gid_pt_rsp_size);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare CT arguments -- port_type */
	ct_req->req.gid_pt.port_type = NS_NX_PORT_TYPE;

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x2055,
		    "GID_PT issue IOCB failed (%d).\n", rval);
	} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp, "GID_PT") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;
	} else {
		/* Set port IDs in switch info list. */
		for (i = 0; i < ha->max_fibre_devices; i++) {
			gid_data = &ct_rsp->rsp.gid_pt.entries[i];
			list[i].d_id.b.domain = gid_data->port_id[0];
			list[i].d_id.b.area = gid_data->port_id[1];
			list[i].d_id.b.al_pa = gid_data->port_id[2];
			memset(list[i].fabric_port_name, 0, WWN_SIZE);
			list[i].fp_speed = PORT_SPEED_UNKNOWN;

			/* Last one exit. */
			if (gid_data->control_byte & BIT_7) {
				list[i].d_id.b.rsvd_1 = gid_data->control_byte;
				break;
			}
		}

		/*
		 * If we've used all available slots, then the switch is
		 * reporting back more devices than we can handle with this
		 * single call.  Return a failed status, and let GA_NXT handle
		 * the overload.
		 */
		if (i == ha->max_fibre_devices)
			rval = QLA_FUNCTION_FAILED;
	}

	return (rval);
}

/**
 * qla2x00_gpn_id() - SNS Get Port Name (GPN_ID) query.
 * @vha: HA context
 * @list: switch info entries to populate
 *
 * Returns 0 on success.
 */
int
qla2x00_gpn_id(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval = QLA_SUCCESS;
	uint16_t	i;

	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;
	struct qla_hw_data *ha = vha->hw;
	struct ct_arg arg;

	if (IS_QLA2100(ha) || IS_QLA2200(ha))
		return qla2x00_sns_gpn_id(vha, list);

	arg.iocb = ha->ms_iocb;
	arg.req_dma = ha->ct_sns_dma;
	arg.rsp_dma = ha->ct_sns_dma;
	arg.req_size = GPN_ID_REQ_SIZE;
	arg.rsp_size = GPN_ID_RSP_SIZE;
	arg.nport_handle = NPH_SNS;

	for (i = 0; i < ha->max_fibre_devices; i++) {
		/* Issue GPN_ID */
		/* Prepare common MS IOCB */
		ms_pkt = ha->isp_ops->prep_ms_iocb(vha, &arg);

		/* Prepare CT request */
		ct_req = qla2x00_prep_ct_req(ha->ct_sns, GPN_ID_CMD,
		    GPN_ID_RSP_SIZE);
		ct_rsp = &ha->ct_sns->p.rsp;

		/* Prepare CT arguments -- port_id */
		ct_req->req.port_id.port_id[0] = list[i].d_id.b.domain;
		ct_req->req.port_id.port_id[1] = list[i].d_id.b.area;
		ct_req->req.port_id.port_id[2] = list[i].d_id.b.al_pa;

		/* Execute MS IOCB */
		rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
		    sizeof(ms_iocb_entry_t));
		if (rval != QLA_SUCCESS) {
			/*EMPTY*/
			ql_dbg(ql_dbg_disc, vha, 0x2056,
			    "GPN_ID issue IOCB failed (%d).\n", rval);
			break;
		} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp,
		    "GPN_ID") != QLA_SUCCESS) {
			rval = QLA_FUNCTION_FAILED;
			break;
		} else {
			/* Save portname */
			memcpy(list[i].port_name,
			    ct_rsp->rsp.gpn_id.port_name, WWN_SIZE);
		}

		/* Last device exit. */
		if (list[i].d_id.b.rsvd_1 != 0)
			break;
	}

	return (rval);
}

/**
 * qla2x00_gnn_id() - SNS Get Node Name (GNN_ID) query.
 * @vha: HA context
 * @list: switch info entries to populate
 *
 * Returns 0 on success.
 */
int
qla2x00_gnn_id(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval = QLA_SUCCESS;
	uint16_t	i;
	struct qla_hw_data *ha = vha->hw;
	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;
	struct ct_arg arg;

	if (IS_QLA2100(ha) || IS_QLA2200(ha))
		return qla2x00_sns_gnn_id(vha, list);

	arg.iocb = ha->ms_iocb;
	arg.req_dma = ha->ct_sns_dma;
	arg.rsp_dma = ha->ct_sns_dma;
	arg.req_size = GNN_ID_REQ_SIZE;
	arg.rsp_size = GNN_ID_RSP_SIZE;
	arg.nport_handle = NPH_SNS;

	for (i = 0; i < ha->max_fibre_devices; i++) {
		/* Issue GNN_ID */
		/* Prepare common MS IOCB */
		ms_pkt = ha->isp_ops->prep_ms_iocb(vha, &arg);

		/* Prepare CT request */
		ct_req = qla2x00_prep_ct_req(ha->ct_sns, GNN_ID_CMD,
		    GNN_ID_RSP_SIZE);
		ct_rsp = &ha->ct_sns->p.rsp;

		/* Prepare CT arguments -- port_id */
		ct_req->req.port_id.port_id[0] = list[i].d_id.b.domain;
		ct_req->req.port_id.port_id[1] = list[i].d_id.b.area;
		ct_req->req.port_id.port_id[2] = list[i].d_id.b.al_pa;

		/* Execute MS IOCB */
		rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
		    sizeof(ms_iocb_entry_t));
		if (rval != QLA_SUCCESS) {
			/*EMPTY*/
			ql_dbg(ql_dbg_disc, vha, 0x2057,
			    "GNN_ID issue IOCB failed (%d).\n", rval);
			break;
		} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp,
		    "GNN_ID") != QLA_SUCCESS) {
			rval = QLA_FUNCTION_FAILED;
			break;
		} else {
			/* Save nodename */
			memcpy(list[i].node_name,
			    ct_rsp->rsp.gnn_id.node_name, WWN_SIZE);

			ql_dbg(ql_dbg_disc, vha, 0x2058,
			    "GID_PT entry - nn %8phN pn %8phN "
			    "portid=%02x%02x%02x.\n",
			    list[i].node_name, list[i].port_name,
			    list[i].d_id.b.domain, list[i].d_id.b.area,
			    list[i].d_id.b.al_pa);
		}

		/* Last device exit. */
		if (list[i].d_id.b.rsvd_1 != 0)
			break;
	}

	return (rval);
}

static void qla2x00_async_sns_sp_done(void *s, int rc)
{
	struct srb *sp = s;
	struct scsi_qla_host *vha = sp->vha;
	struct ct_sns_pkt *ct_sns;
	struct qla_work_evt *e;

	sp->rc = rc;
	if (rc == QLA_SUCCESS) {
		ql_dbg(ql_dbg_disc, vha, 0x204f,
		    "Async done-%s exiting normally.\n",
		    sp->name);
	} else if (rc == QLA_FUNCTION_TIMEOUT) {
		ql_dbg(ql_dbg_disc, vha, 0x204f,
		    "Async done-%s timeout\n", sp->name);
	} else {
		ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.rsp;
		memset(ct_sns, 0, sizeof(*ct_sns));
		sp->retry_count++;
		if (sp->retry_count > 3)
			goto err;

		ql_dbg(ql_dbg_disc, vha, 0x204f,
		    "Async done-%s fail rc %x.  Retry count %d\n",
		    sp->name, rc, sp->retry_count);

		e = qla2x00_alloc_work(vha, QLA_EVT_SP_RETRY);
		if (!e)
			goto err2;

		del_timer(&sp->u.iocb_cmd.timer);
		e->u.iosb.sp = sp;
		qla2x00_post_work(vha, e);
		return;
	}

err:
	e = qla2x00_alloc_work(vha, QLA_EVT_UNMAP);
err2:
	if (!e) {
		/* please ignore kernel warning. otherwise, we have mem leak. */
		if (sp->u.iocb_cmd.u.ctarg.req) {
			dma_free_coherent(&vha->hw->pdev->dev,
			    sizeof(struct ct_sns_pkt),
			    sp->u.iocb_cmd.u.ctarg.req,
			    sp->u.iocb_cmd.u.ctarg.req_dma);
			sp->u.iocb_cmd.u.ctarg.req = NULL;
		}

		if (sp->u.iocb_cmd.u.ctarg.rsp) {
			dma_free_coherent(&vha->hw->pdev->dev,
			    sizeof(struct ct_sns_pkt),
			    sp->u.iocb_cmd.u.ctarg.rsp,
			    sp->u.iocb_cmd.u.ctarg.rsp_dma);
			sp->u.iocb_cmd.u.ctarg.rsp = NULL;
		}

		sp->free(sp);

		return;
	}

	e->u.iosb.sp = sp;
	qla2x00_post_work(vha, e);
}

/**
 * qla2x00_rft_id() - SNS Register FC-4 TYPEs (RFT_ID) supported by the HBA.
 * @vha: HA context
 *
 * Returns 0 on success.
 */
int
qla2x00_rft_id(scsi_qla_host_t *vha)
{
	struct qla_hw_data *ha = vha->hw;

	if (IS_QLA2100(ha) || IS_QLA2200(ha))
		return qla2x00_sns_rft_id(vha);

	return qla_async_rftid(vha, &vha->d_id);
}

static int qla_async_rftid(scsi_qla_host_t *vha, port_id_t *d_id)
{
	int rval = QLA_MEMORY_ALLOC_FAILED;
	struct ct_sns_req *ct_req;
	srb_t *sp;
	struct ct_sns_pkt *ct_sns;

	if (!vha->flags.online)
		goto done;

	sp = qla2x00_get_sp(vha, NULL, GFP_KERNEL);
	if (!sp)
		goto done;

	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "rft_id";
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	sp->u.iocb_cmd.u.ctarg.req = dma_alloc_coherent(&vha->hw->pdev->dev,
	    sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.req_dma,
	    GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.req) {
		ql_log(ql_log_warn, vha, 0xd041,
		    "%s: Failed to allocate ct_sns request.\n",
		    __func__);
		goto done_free_sp;
	}

	sp->u.iocb_cmd.u.ctarg.rsp = dma_alloc_coherent(&vha->hw->pdev->dev,
	    sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.rsp_dma,
	    GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.rsp) {
		ql_log(ql_log_warn, vha, 0xd042,
		    "%s: Failed to allocate ct_sns request.\n",
		    __func__);
		goto done_free_sp;
	}
	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.rsp;
	memset(ct_sns, 0, sizeof(*ct_sns));
	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.req;

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_req(ct_sns, RFT_ID_CMD, RFT_ID_RSP_SIZE);

	/* Prepare CT arguments -- port_id, FC-4 types */
	ct_req->req.rft_id.port_id[0] = vha->d_id.b.domain;
	ct_req->req.rft_id.port_id[1] = vha->d_id.b.area;
	ct_req->req.rft_id.port_id[2] = vha->d_id.b.al_pa;
	ct_req->req.rft_id.fc4_types[2] = 0x01;		/* FCP-3 */

	if (vha->flags.nvme_enabled)
		ct_req->req.rft_id.fc4_types[6] = 1;    /* NVMe type 28h */

	sp->u.iocb_cmd.u.ctarg.req_size = RFT_ID_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = RFT_ID_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;
	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	sp->done = qla2x00_async_sns_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS) {
		ql_dbg(ql_dbg_disc, vha, 0x2043,
		    "RFT_ID issue IOCB failed (%d).\n", rval);
		goto done_free_sp;
	}
	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async-%s - hdl=%x portid %06x.\n",
	    sp->name, sp->handle, d_id->b24);
	return rval;
done_free_sp:
	sp->free(sp);
done:
	return rval;
}

/**
 * qla2x00_rff_id() - SNS Register FC-4 Features (RFF_ID) supported by the HBA.
 * @vha: HA context
 * @type: not used
 *
 * Returns 0 on success.
 */
int
qla2x00_rff_id(scsi_qla_host_t *vha, u8 type)
{
	struct qla_hw_data *ha = vha->hw;

	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
		ql_dbg(ql_dbg_disc, vha, 0x2046,
		    "RFF_ID call not supported on ISP2100/ISP2200.\n");
		return (QLA_SUCCESS);
	}

	return qla_async_rffid(vha, &vha->d_id, qlt_rff_id(vha),
	    FC4_TYPE_FCP_SCSI);
}

static int qla_async_rffid(scsi_qla_host_t *vha, port_id_t *d_id,
    u8 fc4feature, u8 fc4type)
{
	int rval = QLA_MEMORY_ALLOC_FAILED;
	struct ct_sns_req *ct_req;
	srb_t *sp;
	struct ct_sns_pkt *ct_sns;

	sp = qla2x00_get_sp(vha, NULL, GFP_KERNEL);
	if (!sp)
		goto done;

	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "rff_id";
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	sp->u.iocb_cmd.u.ctarg.req = dma_alloc_coherent(&vha->hw->pdev->dev,
	    sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.req_dma,
	    GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.req) {
		ql_log(ql_log_warn, vha, 0xd041,
		    "%s: Failed to allocate ct_sns request.\n",
		    __func__);
		goto done_free_sp;
	}

	sp->u.iocb_cmd.u.ctarg.rsp = dma_alloc_coherent(&vha->hw->pdev->dev,
	    sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.rsp_dma,
	    GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.rsp) {
		ql_log(ql_log_warn, vha, 0xd042,
		    "%s: Failed to allocate ct_sns request.\n",
		    __func__);
		goto done_free_sp;
	}
	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.rsp;
	memset(ct_sns, 0, sizeof(*ct_sns));
	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.req;

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_req(ct_sns, RFF_ID_CMD, RFF_ID_RSP_SIZE);

	/* Prepare CT arguments -- port_id, FC-4 feature, FC-4 type */
	ct_req->req.rff_id.port_id[0] = d_id->b.domain;
	ct_req->req.rff_id.port_id[1] = d_id->b.area;
	ct_req->req.rff_id.port_id[2] = d_id->b.al_pa;
	ct_req->req.rff_id.fc4_feature = fc4feature;
	ct_req->req.rff_id.fc4_type = fc4type;		/* SCSI - FCP */

	sp->u.iocb_cmd.u.ctarg.req_size = RFF_ID_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = RFF_ID_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;
	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	sp->done = qla2x00_async_sns_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS) {
		ql_dbg(ql_dbg_disc, vha, 0x2047,
		    "RFF_ID issue IOCB failed (%d).\n", rval);
		goto done_free_sp;
	}

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async-%s - hdl=%x portid %06x feature %x type %x.\n",
	    sp->name, sp->handle, d_id->b24, fc4feature, fc4type);
	return rval;

done_free_sp:
	sp->free(sp);
done:
	return rval;
}

/**
 * qla2x00_rnn_id() - SNS Register Node Name (RNN_ID) of the HBA.
 * @vha: HA context
 *
 * Returns 0 on success.
 */
int
qla2x00_rnn_id(scsi_qla_host_t *vha)
{
	struct qla_hw_data *ha = vha->hw;

	if (IS_QLA2100(ha) || IS_QLA2200(ha))
		return qla2x00_sns_rnn_id(vha);

	return  qla_async_rnnid(vha, &vha->d_id, vha->node_name);
}

static int qla_async_rnnid(scsi_qla_host_t *vha, port_id_t *d_id,
	u8 *node_name)
{
	int rval = QLA_MEMORY_ALLOC_FAILED;
	struct ct_sns_req *ct_req;
	srb_t *sp;
	struct ct_sns_pkt *ct_sns;

	sp = qla2x00_get_sp(vha, NULL, GFP_KERNEL);
	if (!sp)
		goto done;

	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "rnid";
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	sp->u.iocb_cmd.u.ctarg.req = dma_alloc_coherent(&vha->hw->pdev->dev,
	    sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.req_dma,
	    GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.req) {
		ql_log(ql_log_warn, vha, 0xd041,
		    "%s: Failed to allocate ct_sns request.\n",
		    __func__);
		goto done_free_sp;
	}

	sp->u.iocb_cmd.u.ctarg.rsp = dma_alloc_coherent(&vha->hw->pdev->dev,
	    sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.rsp_dma,
	    GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.rsp) {
		ql_log(ql_log_warn, vha, 0xd042,
		    "%s: Failed to allocate ct_sns request.\n",
		    __func__);
		goto done_free_sp;
	}
	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.rsp;
	memset(ct_sns, 0, sizeof(*ct_sns));
	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.req;

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_req(ct_sns, RNN_ID_CMD, RNN_ID_RSP_SIZE);

	/* Prepare CT arguments -- port_id, node_name */
	ct_req->req.rnn_id.port_id[0] = vha->d_id.b.domain;
	ct_req->req.rnn_id.port_id[1] = vha->d_id.b.area;
	ct_req->req.rnn_id.port_id[2] = vha->d_id.b.al_pa;
	memcpy(ct_req->req.rnn_id.node_name, vha->node_name, WWN_SIZE);

	sp->u.iocb_cmd.u.ctarg.req_size = RNN_ID_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = RNN_ID_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	sp->done = qla2x00_async_sns_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS) {
		ql_dbg(ql_dbg_disc, vha, 0x204d,
		    "RNN_ID issue IOCB failed (%d).\n", rval);
		goto done_free_sp;
	}
	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async-%s - hdl=%x portid %06x\n",
	    sp->name, sp->handle, d_id->b24);

	return rval;

done_free_sp:
	sp->free(sp);
done:
	return rval;
}

void
qla2x00_get_sym_node_name(scsi_qla_host_t *vha, uint8_t *snn, size_t size)
{
	struct qla_hw_data *ha = vha->hw;

	if (IS_QLAFX00(ha))
		snprintf(snn, size, "%s FW:v%s DVR:v%s", ha->model_number,
		    ha->mr.fw_version, qla2x00_version_str);
	else
		snprintf(snn, size,
		    "%s FW:v%d.%02d.%02d DVR:v%s", ha->model_number,
		    ha->fw_major_version, ha->fw_minor_version,
		    ha->fw_subminor_version, qla2x00_version_str);
}

/**
 * qla2x00_rsnn_nn() - SNS Register Symbolic Node Name (RSNN_NN) of the HBA.
 * @vha: HA context
 *
 * Returns 0 on success.
 */
int
qla2x00_rsnn_nn(scsi_qla_host_t *vha)
{
	struct qla_hw_data *ha = vha->hw;

	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
		ql_dbg(ql_dbg_disc, vha, 0x2050,
		    "RSNN_ID call unsupported on ISP2100/ISP2200.\n");
		return (QLA_SUCCESS);
	}

	return qla_async_rsnn_nn(vha);
}

static int qla_async_rsnn_nn(scsi_qla_host_t *vha)
{
	int rval = QLA_MEMORY_ALLOC_FAILED;
	struct ct_sns_req *ct_req;
	srb_t *sp;
	struct ct_sns_pkt *ct_sns;

	sp = qla2x00_get_sp(vha, NULL, GFP_KERNEL);
	if (!sp)
		goto done;

	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "rsnn_nn";
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	sp->u.iocb_cmd.u.ctarg.req = dma_alloc_coherent(&vha->hw->pdev->dev,
	    sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.req_dma,
	    GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.req) {
		ql_log(ql_log_warn, vha, 0xd041,
		    "%s: Failed to allocate ct_sns request.\n",
		    __func__);
		goto done_free_sp;
	}

	sp->u.iocb_cmd.u.ctarg.rsp = dma_alloc_coherent(&vha->hw->pdev->dev,
	    sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.rsp_dma,
	    GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.rsp) {
		ql_log(ql_log_warn, vha, 0xd042,
		    "%s: Failed to allocate ct_sns request.\n",
		    __func__);
		goto done_free_sp;
	}
	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.rsp;
	memset(ct_sns, 0, sizeof(*ct_sns));
	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.req;

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_req(ct_sns, RSNN_NN_CMD, RSNN_NN_RSP_SIZE);

	/* Prepare CT arguments -- node_name, symbolic node_name, size */
	memcpy(ct_req->req.rsnn_nn.node_name, vha->node_name, WWN_SIZE);

	/* Prepare the Symbolic Node Name */
	qla2x00_get_sym_node_name(vha, ct_req->req.rsnn_nn.sym_node_name,
	    sizeof(ct_req->req.rsnn_nn.sym_node_name));
	ct_req->req.rsnn_nn.name_len =
	    (uint8_t)strlen(ct_req->req.rsnn_nn.sym_node_name);


	sp->u.iocb_cmd.u.ctarg.req_size = 24 + 1 + ct_req->req.rsnn_nn.name_len;
	sp->u.iocb_cmd.u.ctarg.rsp_size = RSNN_NN_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	sp->done = qla2x00_async_sns_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS) {
		ql_dbg(ql_dbg_disc, vha, 0x2043,
		    "RFT_ID issue IOCB failed (%d).\n", rval);
		goto done_free_sp;
	}
	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async-%s - hdl=%x.\n",
	    sp->name, sp->handle);

	return rval;

done_free_sp:
	sp->free(sp);
done:
	return rval;
}

/**
 * qla2x00_prep_sns_cmd() - Prepare common SNS command request fields for query.
 * @vha: HA context
 * @cmd: GS command
 * @scmd_len: Subcommand length
 * @data_size: response size in bytes
 *
 * Returns a pointer to the @ha's sns_cmd.
 */
static inline struct sns_cmd_pkt *
qla2x00_prep_sns_cmd(scsi_qla_host_t *vha, uint16_t cmd, uint16_t scmd_len,
    uint16_t data_size)
{
	uint16_t		wc;
	struct sns_cmd_pkt	*sns_cmd;
	struct qla_hw_data *ha = vha->hw;

	sns_cmd = ha->sns_cmd;
	memset(sns_cmd, 0, sizeof(struct sns_cmd_pkt));
	wc = data_size / 2;			/* Size in 16bit words. */
	sns_cmd->p.cmd.buffer_length = cpu_to_le16(wc);
	sns_cmd->p.cmd.buffer_address[0] = cpu_to_le32(LSD(ha->sns_cmd_dma));
	sns_cmd->p.cmd.buffer_address[1] = cpu_to_le32(MSD(ha->sns_cmd_dma));
	sns_cmd->p.cmd.subcommand_length = cpu_to_le16(scmd_len);
	sns_cmd->p.cmd.subcommand = cpu_to_le16(cmd);
	wc = (data_size - 16) / 4;		/* Size in 32bit words. */
	sns_cmd->p.cmd.size = cpu_to_le16(wc);

	vha->qla_stats.control_requests++;

	return (sns_cmd);
}

/**
 * qla2x00_sns_ga_nxt() - SNS scan for fabric devices via GA_NXT command.
 * @vha: HA context
 * @fcport: fcport entry to updated
 *
 * This command uses the old Exectute SNS Command mailbox routine.
 *
 * Returns 0 on success.
 */
static int
qla2x00_sns_ga_nxt(scsi_qla_host_t *vha, fc_port_t *fcport)
{
	int		rval = QLA_SUCCESS;
	struct qla_hw_data *ha = vha->hw;
	struct sns_cmd_pkt	*sns_cmd;

	/* Issue GA_NXT. */
	/* Prepare SNS command request. */
	sns_cmd = qla2x00_prep_sns_cmd(vha, GA_NXT_CMD, GA_NXT_SNS_SCMD_LEN,
	    GA_NXT_SNS_DATA_SIZE);

	/* Prepare SNS command arguments -- port_id. */
	sns_cmd->p.cmd.param[0] = fcport->d_id.b.al_pa;
	sns_cmd->p.cmd.param[1] = fcport->d_id.b.area;
	sns_cmd->p.cmd.param[2] = fcport->d_id.b.domain;

	/* Execute SNS command. */
	rval = qla2x00_send_sns(vha, ha->sns_cmd_dma, GA_NXT_SNS_CMD_SIZE / 2,
	    sizeof(struct sns_cmd_pkt));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x205f,
		    "GA_NXT Send SNS failed (%d).\n", rval);
	} else if (sns_cmd->p.gan_data[8] != 0x80 ||
	    sns_cmd->p.gan_data[9] != 0x02) {
		ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x2084,
		    "GA_NXT failed, rejected request ga_nxt_rsp:\n");
		ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x2074,
		    sns_cmd->p.gan_data, 16);
		rval = QLA_FUNCTION_FAILED;
	} else {
		/* Populate fc_port_t entry. */
		fcport->d_id.b.domain = sns_cmd->p.gan_data[17];
		fcport->d_id.b.area = sns_cmd->p.gan_data[18];
		fcport->d_id.b.al_pa = sns_cmd->p.gan_data[19];

		memcpy(fcport->node_name, &sns_cmd->p.gan_data[284], WWN_SIZE);
		memcpy(fcport->port_name, &sns_cmd->p.gan_data[20], WWN_SIZE);

		if (sns_cmd->p.gan_data[16] != NS_N_PORT_TYPE &&
		    sns_cmd->p.gan_data[16] != NS_NL_PORT_TYPE)
			fcport->d_id.b.domain = 0xf0;

		ql_dbg(ql_dbg_disc, vha, 0x2061,
		    "GA_NXT entry - nn %8phN pn %8phN "
		    "port_id=%02x%02x%02x.\n",
		    fcport->node_name, fcport->port_name,
		    fcport->d_id.b.domain, fcport->d_id.b.area,
		    fcport->d_id.b.al_pa);
	}

	return (rval);
}

/**
 * qla2x00_sns_gid_pt() - SNS scan for fabric devices via GID_PT command.
 * @vha: HA context
 * @list: switch info entries to populate
 *
 * This command uses the old Exectute SNS Command mailbox routine.
 *
 * NOTE: Non-Nx_Ports are not requested.
 *
 * Returns 0 on success.
 */
static int
qla2x00_sns_gid_pt(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval;
	struct qla_hw_data *ha = vha->hw;
	uint16_t	i;
	uint8_t		*entry;
	struct sns_cmd_pkt	*sns_cmd;
	uint16_t gid_pt_sns_data_size;

	gid_pt_sns_data_size = qla2x00_gid_pt_rsp_size(vha);

	/* Issue GID_PT. */
	/* Prepare SNS command request. */
	sns_cmd = qla2x00_prep_sns_cmd(vha, GID_PT_CMD, GID_PT_SNS_SCMD_LEN,
	    gid_pt_sns_data_size);

	/* Prepare SNS command arguments -- port_type. */
	sns_cmd->p.cmd.param[0] = NS_NX_PORT_TYPE;

	/* Execute SNS command. */
	rval = qla2x00_send_sns(vha, ha->sns_cmd_dma, GID_PT_SNS_CMD_SIZE / 2,
	    sizeof(struct sns_cmd_pkt));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x206d,
		    "GID_PT Send SNS failed (%d).\n", rval);
	} else if (sns_cmd->p.gid_data[8] != 0x80 ||
	    sns_cmd->p.gid_data[9] != 0x02) {
		ql_dbg(ql_dbg_disc, vha, 0x202f,
		    "GID_PT failed, rejected request, gid_rsp:\n");
		ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x2081,
		    sns_cmd->p.gid_data, 16);
		rval = QLA_FUNCTION_FAILED;
	} else {
		/* Set port IDs in switch info list. */
		for (i = 0; i < ha->max_fibre_devices; i++) {
			entry = &sns_cmd->p.gid_data[(i * 4) + 16];
			list[i].d_id.b.domain = entry[1];
			list[i].d_id.b.area = entry[2];
			list[i].d_id.b.al_pa = entry[3];

			/* Last one exit. */
			if (entry[0] & BIT_7) {
				list[i].d_id.b.rsvd_1 = entry[0];
				break;
			}
		}

		/*
		 * If we've used all available slots, then the switch is
		 * reporting back more devices that we can handle with this
		 * single call.  Return a failed status, and let GA_NXT handle
		 * the overload.
		 */
		if (i == ha->max_fibre_devices)
			rval = QLA_FUNCTION_FAILED;
	}

	return (rval);
}

/**
 * qla2x00_sns_gpn_id() - SNS Get Port Name (GPN_ID) query.
 * @vha: HA context
 * @list: switch info entries to populate
 *
 * This command uses the old Exectute SNS Command mailbox routine.
 *
 * Returns 0 on success.
 */
static int
qla2x00_sns_gpn_id(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval = QLA_SUCCESS;
	struct qla_hw_data *ha = vha->hw;
	uint16_t	i;
	struct sns_cmd_pkt	*sns_cmd;

	for (i = 0; i < ha->max_fibre_devices; i++) {
		/* Issue GPN_ID */
		/* Prepare SNS command request. */
		sns_cmd = qla2x00_prep_sns_cmd(vha, GPN_ID_CMD,
		    GPN_ID_SNS_SCMD_LEN, GPN_ID_SNS_DATA_SIZE);

		/* Prepare SNS command arguments -- port_id. */
		sns_cmd->p.cmd.param[0] = list[i].d_id.b.al_pa;
		sns_cmd->p.cmd.param[1] = list[i].d_id.b.area;
		sns_cmd->p.cmd.param[2] = list[i].d_id.b.domain;

		/* Execute SNS command. */
		rval = qla2x00_send_sns(vha, ha->sns_cmd_dma,
		    GPN_ID_SNS_CMD_SIZE / 2, sizeof(struct sns_cmd_pkt));
		if (rval != QLA_SUCCESS) {
			/*EMPTY*/
			ql_dbg(ql_dbg_disc, vha, 0x2032,
			    "GPN_ID Send SNS failed (%d).\n", rval);
		} else if (sns_cmd->p.gpn_data[8] != 0x80 ||
		    sns_cmd->p.gpn_data[9] != 0x02) {
			ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x207e,
			    "GPN_ID failed, rejected request, gpn_rsp:\n");
			ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x207f,
			    sns_cmd->p.gpn_data, 16);
			rval = QLA_FUNCTION_FAILED;
		} else {
			/* Save portname */
			memcpy(list[i].port_name, &sns_cmd->p.gpn_data[16],
			    WWN_SIZE);
		}

		/* Last device exit. */
		if (list[i].d_id.b.rsvd_1 != 0)
			break;
	}

	return (rval);
}

/**
 * qla2x00_sns_gnn_id() - SNS Get Node Name (GNN_ID) query.
 * @vha: HA context
 * @list: switch info entries to populate
 *
 * This command uses the old Exectute SNS Command mailbox routine.
 *
 * Returns 0 on success.
 */
static int
qla2x00_sns_gnn_id(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval = QLA_SUCCESS;
	struct qla_hw_data *ha = vha->hw;
	uint16_t	i;
	struct sns_cmd_pkt	*sns_cmd;

	for (i = 0; i < ha->max_fibre_devices; i++) {
		/* Issue GNN_ID */
		/* Prepare SNS command request. */
		sns_cmd = qla2x00_prep_sns_cmd(vha, GNN_ID_CMD,
		    GNN_ID_SNS_SCMD_LEN, GNN_ID_SNS_DATA_SIZE);

		/* Prepare SNS command arguments -- port_id. */
		sns_cmd->p.cmd.param[0] = list[i].d_id.b.al_pa;
		sns_cmd->p.cmd.param[1] = list[i].d_id.b.area;
		sns_cmd->p.cmd.param[2] = list[i].d_id.b.domain;

		/* Execute SNS command. */
		rval = qla2x00_send_sns(vha, ha->sns_cmd_dma,
		    GNN_ID_SNS_CMD_SIZE / 2, sizeof(struct sns_cmd_pkt));
		if (rval != QLA_SUCCESS) {
			/*EMPTY*/
			ql_dbg(ql_dbg_disc, vha, 0x203f,
			    "GNN_ID Send SNS failed (%d).\n", rval);
		} else if (sns_cmd->p.gnn_data[8] != 0x80 ||
		    sns_cmd->p.gnn_data[9] != 0x02) {
			ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x2082,
			    "GNN_ID failed, rejected request, gnn_rsp:\n");
			ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x207a,
			    sns_cmd->p.gnn_data, 16);
			rval = QLA_FUNCTION_FAILED;
		} else {
			/* Save nodename */
			memcpy(list[i].node_name, &sns_cmd->p.gnn_data[16],
			    WWN_SIZE);

			ql_dbg(ql_dbg_disc, vha, 0x206e,
			    "GID_PT entry - nn %8phN pn %8phN "
			    "port_id=%02x%02x%02x.\n",
			    list[i].node_name, list[i].port_name,
			    list[i].d_id.b.domain, list[i].d_id.b.area,
			    list[i].d_id.b.al_pa);
		}

		/* Last device exit. */
		if (list[i].d_id.b.rsvd_1 != 0)
			break;
	}

	return (rval);
}

/**
 * qla2x00_snd_rft_id() - SNS Register FC-4 TYPEs (RFT_ID) supported by the HBA.
 * @vha: HA context
 *
 * This command uses the old Exectute SNS Command mailbox routine.
 *
 * Returns 0 on success.
 */
static int
qla2x00_sns_rft_id(scsi_qla_host_t *vha)
{
	int		rval;
	struct qla_hw_data *ha = vha->hw;
	struct sns_cmd_pkt	*sns_cmd;

	/* Issue RFT_ID. */
	/* Prepare SNS command request. */
	sns_cmd = qla2x00_prep_sns_cmd(vha, RFT_ID_CMD, RFT_ID_SNS_SCMD_LEN,
	    RFT_ID_SNS_DATA_SIZE);

	/* Prepare SNS command arguments -- port_id, FC-4 types */
	sns_cmd->p.cmd.param[0] = vha->d_id.b.al_pa;
	sns_cmd->p.cmd.param[1] = vha->d_id.b.area;
	sns_cmd->p.cmd.param[2] = vha->d_id.b.domain;

	sns_cmd->p.cmd.param[5] = 0x01;			/* FCP-3 */

	/* Execute SNS command. */
	rval = qla2x00_send_sns(vha, ha->sns_cmd_dma, RFT_ID_SNS_CMD_SIZE / 2,
	    sizeof(struct sns_cmd_pkt));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x2060,
		    "RFT_ID Send SNS failed (%d).\n", rval);
	} else if (sns_cmd->p.rft_data[8] != 0x80 ||
	    sns_cmd->p.rft_data[9] != 0x02) {
		ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x2083,
		    "RFT_ID failed, rejected request rft_rsp:\n");
		ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x2080,
		    sns_cmd->p.rft_data, 16);
		rval = QLA_FUNCTION_FAILED;
	} else {
		ql_dbg(ql_dbg_disc, vha, 0x2073,
		    "RFT_ID exiting normally.\n");
	}

	return (rval);
}

/**
 * qla2x00_sns_rnn_id() - SNS Register Node Name (RNN_ID) of the HBA.
 * @vha: HA context
 *
 * This command uses the old Exectute SNS Command mailbox routine.
 *
 * Returns 0 on success.
 */
static int
qla2x00_sns_rnn_id(scsi_qla_host_t *vha)
{
	int		rval;
	struct qla_hw_data *ha = vha->hw;
	struct sns_cmd_pkt	*sns_cmd;

	/* Issue RNN_ID. */
	/* Prepare SNS command request. */
	sns_cmd = qla2x00_prep_sns_cmd(vha, RNN_ID_CMD, RNN_ID_SNS_SCMD_LEN,
	    RNN_ID_SNS_DATA_SIZE);

	/* Prepare SNS command arguments -- port_id, nodename. */
	sns_cmd->p.cmd.param[0] = vha->d_id.b.al_pa;
	sns_cmd->p.cmd.param[1] = vha->d_id.b.area;
	sns_cmd->p.cmd.param[2] = vha->d_id.b.domain;

	sns_cmd->p.cmd.param[4] = vha->node_name[7];
	sns_cmd->p.cmd.param[5] = vha->node_name[6];
	sns_cmd->p.cmd.param[6] = vha->node_name[5];
	sns_cmd->p.cmd.param[7] = vha->node_name[4];
	sns_cmd->p.cmd.param[8] = vha->node_name[3];
	sns_cmd->p.cmd.param[9] = vha->node_name[2];
	sns_cmd->p.cmd.param[10] = vha->node_name[1];
	sns_cmd->p.cmd.param[11] = vha->node_name[0];

	/* Execute SNS command. */
	rval = qla2x00_send_sns(vha, ha->sns_cmd_dma, RNN_ID_SNS_CMD_SIZE / 2,
	    sizeof(struct sns_cmd_pkt));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x204a,
		    "RNN_ID Send SNS failed (%d).\n", rval);
	} else if (sns_cmd->p.rnn_data[8] != 0x80 ||
	    sns_cmd->p.rnn_data[9] != 0x02) {
		ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x207b,
		    "RNN_ID failed, rejected request, rnn_rsp:\n");
		ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x207c,
		    sns_cmd->p.rnn_data, 16);
		rval = QLA_FUNCTION_FAILED;
	} else {
		ql_dbg(ql_dbg_disc, vha, 0x204c,
		    "RNN_ID exiting normally.\n");
	}

	return (rval);
}

/**
 * qla2x00_mgmt_svr_login() - Login to fabric Management Service.
 * @vha: HA context
 *
 * Returns 0 on success.
 */
int
qla2x00_mgmt_svr_login(scsi_qla_host_t *vha)
{
	int ret, rval;
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	struct qla_hw_data *ha = vha->hw;
	ret = QLA_SUCCESS;
	if (vha->flags.management_server_logged_in)
		return ret;

	rval = ha->isp_ops->fabric_login(vha, vha->mgmt_svr_loop_id, 0xff, 0xff,
	    0xfa, mb, BIT_1);
	if (rval != QLA_SUCCESS || mb[0] != MBS_COMMAND_COMPLETE) {
		if (rval == QLA_MEMORY_ALLOC_FAILED)
			ql_dbg(ql_dbg_disc, vha, 0x2085,
			    "Failed management_server login: loopid=%x "
			    "rval=%d\n", vha->mgmt_svr_loop_id, rval);
		else
			ql_dbg(ql_dbg_disc, vha, 0x2024,
			    "Failed management_server login: loopid=%x "
			    "mb[0]=%x mb[1]=%x mb[2]=%x mb[6]=%x mb[7]=%x.\n",
			    vha->mgmt_svr_loop_id, mb[0], mb[1], mb[2], mb[6],
			    mb[7]);
		ret = QLA_FUNCTION_FAILED;
	} else
		vha->flags.management_server_logged_in = 1;

	return ret;
}

/**
 * qla2x00_prep_ms_fdmi_iocb() - Prepare common MS IOCB fields for FDMI query.
 * @vha: HA context
 * @req_size: request size in bytes
 * @rsp_size: response size in bytes
 *
 * Returns a pointer to the @ha's ms_iocb.
 */
void *
qla2x00_prep_ms_fdmi_iocb(scsi_qla_host_t *vha, uint32_t req_size,
    uint32_t rsp_size)
{
	ms_iocb_entry_t *ms_pkt;
	struct qla_hw_data *ha = vha->hw;
	ms_pkt = ha->ms_iocb;
	memset(ms_pkt, 0, sizeof(ms_iocb_entry_t));

	ms_pkt->entry_type = MS_IOCB_TYPE;
	ms_pkt->entry_count = 1;
	SET_TARGET_ID(ha, ms_pkt->loop_id, vha->mgmt_svr_loop_id);
	ms_pkt->control_flags = cpu_to_le16(CF_READ | CF_HEAD_TAG);
	ms_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
	ms_pkt->cmd_dsd_count = cpu_to_le16(1);
	ms_pkt->total_dsd_count = cpu_to_le16(2);
	ms_pkt->rsp_bytecount = cpu_to_le32(rsp_size);
	ms_pkt->req_bytecount = cpu_to_le32(req_size);

	ms_pkt->dseg_req_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
	ms_pkt->dseg_req_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
	ms_pkt->dseg_req_length = ms_pkt->req_bytecount;

	ms_pkt->dseg_rsp_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
	ms_pkt->dseg_rsp_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
	ms_pkt->dseg_rsp_length = ms_pkt->rsp_bytecount;

	return ms_pkt;
}

/**
 * qla24xx_prep_ms_fdmi_iocb() - Prepare common MS IOCB fields for FDMI query.
 * @vha: HA context
 * @req_size: request size in bytes
 * @rsp_size: response size in bytes
 *
 * Returns a pointer to the @ha's ms_iocb.
 */
void *
qla24xx_prep_ms_fdmi_iocb(scsi_qla_host_t *vha, uint32_t req_size,
    uint32_t rsp_size)
{
	struct ct_entry_24xx *ct_pkt;
	struct qla_hw_data *ha = vha->hw;

	ct_pkt = (struct ct_entry_24xx *)ha->ms_iocb;
	memset(ct_pkt, 0, sizeof(struct ct_entry_24xx));

	ct_pkt->entry_type = CT_IOCB_TYPE;
	ct_pkt->entry_count = 1;
	ct_pkt->nport_handle = cpu_to_le16(vha->mgmt_svr_loop_id);
	ct_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
	ct_pkt->cmd_dsd_count = cpu_to_le16(1);
	ct_pkt->rsp_dsd_count = cpu_to_le16(1);
	ct_pkt->rsp_byte_count = cpu_to_le32(rsp_size);
	ct_pkt->cmd_byte_count = cpu_to_le32(req_size);

	ct_pkt->dseg_0_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
	ct_pkt->dseg_0_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
	ct_pkt->dseg_0_len = ct_pkt->cmd_byte_count;

	ct_pkt->dseg_1_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
	ct_pkt->dseg_1_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
	ct_pkt->dseg_1_len = ct_pkt->rsp_byte_count;
	ct_pkt->vp_index = vha->vp_idx;

	return ct_pkt;
}

static inline ms_iocb_entry_t *
qla2x00_update_ms_fdmi_iocb(scsi_qla_host_t *vha, uint32_t req_size)
{
	struct qla_hw_data *ha = vha->hw;
	ms_iocb_entry_t *ms_pkt = ha->ms_iocb;
	struct ct_entry_24xx *ct_pkt = (struct ct_entry_24xx *)ha->ms_iocb;

	if (IS_FWI2_CAPABLE(ha)) {
		ct_pkt->cmd_byte_count = cpu_to_le32(req_size);
		ct_pkt->dseg_0_len = ct_pkt->cmd_byte_count;
	} else {
		ms_pkt->req_bytecount = cpu_to_le32(req_size);
		ms_pkt->dseg_req_length = ms_pkt->req_bytecount;
	}

	return ms_pkt;
}

/**
 * qla2x00_prep_ct_req() - Prepare common CT request fields for SNS query.
 * @p: CT request buffer
 * @cmd: GS command
 * @rsp_size: response size in bytes
 *
 * Returns a pointer to the intitialized @ct_req.
 */
static inline struct ct_sns_req *
qla2x00_prep_ct_fdmi_req(struct ct_sns_pkt *p, uint16_t cmd,
    uint16_t rsp_size)
{
	memset(p, 0, sizeof(struct ct_sns_pkt));

	p->p.req.header.revision = 0x01;
	p->p.req.header.gs_type = 0xFA;
	p->p.req.header.gs_subtype = 0x10;
	p->p.req.command = cpu_to_be16(cmd);
	p->p.req.max_rsp_size = cpu_to_be16((rsp_size - 16) / 4);

	return &p->p.req;
}

/**
 * qla2x00_fdmi_rhba() - perform RHBA FDMI registration
 * @vha: HA context
 *
 * Returns 0 on success.
 */
static int
qla2x00_fdmi_rhba(scsi_qla_host_t *vha)
{
	int rval, alen;
	uint32_t size, sn;

	ms_iocb_entry_t *ms_pkt;
	struct ct_sns_req *ct_req;
	struct ct_sns_rsp *ct_rsp;
	void *entries;
	struct ct_fdmi_hba_attr *eiter;
	struct qla_hw_data *ha = vha->hw;

	/* Issue RHBA */
	/* Prepare common MS IOCB */
	/*   Request size adjusted after CT preparation */
	ms_pkt = ha->isp_ops->prep_ms_fdmi_iocb(vha, 0, RHBA_RSP_SIZE);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_fdmi_req(ha->ct_sns, RHBA_CMD, RHBA_RSP_SIZE);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare FDMI command arguments -- attribute block, attributes. */
	memcpy(ct_req->req.rhba.hba_identifier, vha->port_name, WWN_SIZE);
	ct_req->req.rhba.entry_count = cpu_to_be32(1);
	memcpy(ct_req->req.rhba.port_name, vha->port_name, WWN_SIZE);
	size = 2 * WWN_SIZE + 4 + 4;

	/* Attributes */
	ct_req->req.rhba.attrs.count =
	    cpu_to_be32(FDMI_HBA_ATTR_COUNT);
	entries = ct_req->req.rhba.hba_identifier;

	/* Nodename. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_NODE_NAME);
	eiter->len = cpu_to_be16(4 + WWN_SIZE);
	memcpy(eiter->a.node_name, vha->node_name, WWN_SIZE);
	size += 4 + WWN_SIZE;

	ql_dbg(ql_dbg_disc, vha, 0x2025,
	    "NodeName = %8phN.\n", eiter->a.node_name);

	/* Manufacturer. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_MANUFACTURER);
	alen = strlen(QLA2XXX_MANUFACTURER);
	snprintf(eiter->a.manufacturer, sizeof(eiter->a.manufacturer),
	    "%s", "QLogic Corporation");
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x2026,
	    "Manufacturer = %s.\n", eiter->a.manufacturer);

	/* Serial number. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_SERIAL_NUMBER);
	if (IS_FWI2_CAPABLE(ha))
		qla2xxx_get_vpd_field(vha, "SN", eiter->a.serial_num,
		    sizeof(eiter->a.serial_num));
	else {
		sn = ((ha->serial0 & 0x1f) << 16) |
			(ha->serial2 << 8) | ha->serial1;
		snprintf(eiter->a.serial_num, sizeof(eiter->a.serial_num),
		    "%c%05d", 'A' + sn / 100000, sn % 100000);
	}
	alen = strlen(eiter->a.serial_num);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x2027,
	    "Serial no. = %s.\n", eiter->a.serial_num);

	/* Model name. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_MODEL);
	snprintf(eiter->a.model, sizeof(eiter->a.model),
	    "%s", ha->model_number);
	alen = strlen(eiter->a.model);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x2028,
	    "Model Name = %s.\n", eiter->a.model);

	/* Model description. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_MODEL_DESCRIPTION);
	snprintf(eiter->a.model_desc, sizeof(eiter->a.model_desc),
	    "%s", ha->model_desc);
	alen = strlen(eiter->a.model_desc);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x2029,
	    "Model Desc = %s.\n", eiter->a.model_desc);

	/* Hardware version. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_HARDWARE_VERSION);
	if (!IS_FWI2_CAPABLE(ha)) {
		snprintf(eiter->a.hw_version, sizeof(eiter->a.hw_version),
		    "HW:%s", ha->adapter_id);
	} else if (qla2xxx_get_vpd_field(vha, "MN", eiter->a.hw_version,
		    sizeof(eiter->a.hw_version))) {
		;
	} else if (qla2xxx_get_vpd_field(vha, "EC", eiter->a.hw_version,
		    sizeof(eiter->a.hw_version))) {
		;
	} else {
		snprintf(eiter->a.hw_version, sizeof(eiter->a.hw_version),
		    "HW:%s", ha->adapter_id);
	}
	alen = strlen(eiter->a.hw_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x202a,
	    "Hardware ver = %s.\n", eiter->a.hw_version);

	/* Driver version. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_DRIVER_VERSION);
	snprintf(eiter->a.driver_version, sizeof(eiter->a.driver_version),
	    "%s", qla2x00_version_str);
	alen = strlen(eiter->a.driver_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x202b,
	    "Driver ver = %s.\n", eiter->a.driver_version);

	/* Option ROM version. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_OPTION_ROM_VERSION);
	snprintf(eiter->a.orom_version, sizeof(eiter->a.orom_version),
	    "%d.%02d", ha->bios_revision[1], ha->bios_revision[0]);
	alen = strlen(eiter->a.orom_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha , 0x202c,
	    "Optrom vers = %s.\n", eiter->a.orom_version);

	/* Firmware version */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_FIRMWARE_VERSION);
	ha->isp_ops->fw_version_str(vha, eiter->a.fw_version,
	    sizeof(eiter->a.fw_version));
	alen = strlen(eiter->a.fw_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x202d,
	    "Firmware vers = %s.\n", eiter->a.fw_version);

	/* Update MS request size. */
	qla2x00_update_ms_fdmi_iocb(vha, size + 16);

	ql_dbg(ql_dbg_disc, vha, 0x202e,
	    "RHBA identifier = %8phN size=%d.\n",
	    ct_req->req.rhba.hba_identifier, size);
	ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x2076,
	    entries, size);

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x2030,
		    "RHBA issue IOCB failed (%d).\n", rval);
	} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp, "RHBA") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;
		if (ct_rsp->header.reason_code == CT_REASON_CANNOT_PERFORM &&
		    ct_rsp->header.explanation_code ==
		    CT_EXPL_ALREADY_REGISTERED) {
			ql_dbg(ql_dbg_disc, vha, 0x2034,
			    "HBA already registered.\n");
			rval = QLA_ALREADY_REGISTERED;
		} else {
			ql_dbg(ql_dbg_disc, vha, 0x20ad,
			    "RHBA FDMI registration failed, CT Reason code: 0x%x, CT Explanation 0x%x\n",
			    ct_rsp->header.reason_code,
			    ct_rsp->header.explanation_code);
		}
	} else {
		ql_dbg(ql_dbg_disc, vha, 0x2035,
		    "RHBA exiting normally.\n");
	}

	return rval;
}

/**
 * qla2x00_fdmi_rpa() - perform RPA registration
 * @vha: HA context
 *
 * Returns 0 on success.
 */
static int
qla2x00_fdmi_rpa(scsi_qla_host_t *vha)
{
	int rval, alen;
	uint32_t size;
	struct qla_hw_data *ha = vha->hw;
	ms_iocb_entry_t *ms_pkt;
	struct ct_sns_req *ct_req;
	struct ct_sns_rsp *ct_rsp;
	void *entries;
	struct ct_fdmi_port_attr *eiter;
	struct init_cb_24xx *icb24 = (struct init_cb_24xx *)ha->init_cb;
	struct new_utsname *p_sysid = NULL;

	/* Issue RPA */
	/* Prepare common MS IOCB */
	/*   Request size adjusted after CT preparation */
	ms_pkt = ha->isp_ops->prep_ms_fdmi_iocb(vha, 0, RPA_RSP_SIZE);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_fdmi_req(ha->ct_sns, RPA_CMD,
	    RPA_RSP_SIZE);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare FDMI command arguments -- attribute block, attributes. */
	memcpy(ct_req->req.rpa.port_name, vha->port_name, WWN_SIZE);
	size = WWN_SIZE + 4;

	/* Attributes */
	ct_req->req.rpa.attrs.count = cpu_to_be32(FDMI_PORT_ATTR_COUNT);
	entries = ct_req->req.rpa.port_name;

	/* FC4 types. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_FC4_TYPES);
	eiter->len = cpu_to_be16(4 + 32);
	eiter->a.fc4_types[2] = 0x01;
	size += 4 + 32;

	ql_dbg(ql_dbg_disc, vha, 0x2039,
	    "FC4_TYPES=%02x %02x.\n",
	    eiter->a.fc4_types[2],
	    eiter->a.fc4_types[1]);

	/* Supported speed. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_SUPPORT_SPEED);
	eiter->len = cpu_to_be16(4 + 4);
	if (IS_CNA_CAPABLE(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_10GB);
	else if (IS_QLA27XX(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_32GB|
		    FDMI_PORT_SPEED_16GB|
		    FDMI_PORT_SPEED_8GB);
	else if (IS_QLA2031(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_16GB|
		    FDMI_PORT_SPEED_8GB|
		    FDMI_PORT_SPEED_4GB);
	else if (IS_QLA25XX(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_8GB|
		    FDMI_PORT_SPEED_4GB|
		    FDMI_PORT_SPEED_2GB|
		    FDMI_PORT_SPEED_1GB);
	else if (IS_QLA24XX_TYPE(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_4GB|
		    FDMI_PORT_SPEED_2GB|
		    FDMI_PORT_SPEED_1GB);
	else if (IS_QLA23XX(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_2GB|
		    FDMI_PORT_SPEED_1GB);
	else
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_1GB);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x203a,
	    "Supported_Speed=%x.\n", eiter->a.sup_speed);

	/* Current speed. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_CURRENT_SPEED);
	eiter->len = cpu_to_be16(4 + 4);
	switch (ha->link_data_rate) {
	case PORT_SPEED_1GB:
		eiter->a.cur_speed =
		    cpu_to_be32(FDMI_PORT_SPEED_1GB);
		break;
	case PORT_SPEED_2GB:
		eiter->a.cur_speed =
		    cpu_to_be32(FDMI_PORT_SPEED_2GB);
		break;
	case PORT_SPEED_4GB:
		eiter->a.cur_speed =
		    cpu_to_be32(FDMI_PORT_SPEED_4GB);
		break;
	case PORT_SPEED_8GB:
		eiter->a.cur_speed =
		    cpu_to_be32(FDMI_PORT_SPEED_8GB);
		break;
	case PORT_SPEED_10GB:
		eiter->a.cur_speed =
		    cpu_to_be32(FDMI_PORT_SPEED_10GB);
		break;
	case PORT_SPEED_16GB:
		eiter->a.cur_speed =
		    cpu_to_be32(FDMI_PORT_SPEED_16GB);
		break;
	case PORT_SPEED_32GB:
		eiter->a.cur_speed =
		    cpu_to_be32(FDMI_PORT_SPEED_32GB);
		break;
	default:
		eiter->a.cur_speed =
		    cpu_to_be32(FDMI_PORT_SPEED_UNKNOWN);
		break;
	}
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x203b,
	    "Current_Speed=%x.\n", eiter->a.cur_speed);

	/* Max frame size. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_MAX_FRAME_SIZE);
	eiter->len = cpu_to_be16(4 + 4);
	eiter->a.max_frame_size = IS_FWI2_CAPABLE(ha) ?
	    le16_to_cpu(icb24->frame_payload_size) :
	    le16_to_cpu(ha->init_cb->frame_payload_size);
	eiter->a.max_frame_size = cpu_to_be32(eiter->a.max_frame_size);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x203c,
	    "Max_Frame_Size=%x.\n", eiter->a.max_frame_size);

	/* OS device name. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_OS_DEVICE_NAME);
	snprintf(eiter->a.os_dev_name, sizeof(eiter->a.os_dev_name),
	    "%s:host%lu", QLA2XXX_DRIVER_NAME, vha->host_no);
	alen = strlen(eiter->a.os_dev_name);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x204b,
	    "OS_Device_Name=%s.\n", eiter->a.os_dev_name);

	/* Hostname. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_HOST_NAME);
	p_sysid = utsname();
	if (p_sysid) {
		snprintf(eiter->a.host_name, sizeof(eiter->a.host_name),
		    "%s", p_sysid->nodename);
	} else {
		snprintf(eiter->a.host_name, sizeof(eiter->a.host_name),
		    "%s", fc_host_system_hostname(vha->host));
	}
	alen = strlen(eiter->a.host_name);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x203d, "HostName=%s.\n", eiter->a.host_name);

	/* Update MS request size. */
	qla2x00_update_ms_fdmi_iocb(vha, size + 16);

	ql_dbg(ql_dbg_disc, vha, 0x203e,
	    "RPA portname  %016llx, size = %d.\n",
	    wwn_to_u64(ct_req->req.rpa.port_name), size);
	ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x2079,
	    entries, size);

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x2040,
		    "RPA issue IOCB failed (%d).\n", rval);
	} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp, "RPA") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;
		if (ct_rsp->header.reason_code == CT_REASON_CANNOT_PERFORM &&
		    ct_rsp->header.explanation_code ==
		    CT_EXPL_ALREADY_REGISTERED) {
			ql_dbg(ql_dbg_disc, vha, 0x20cd,
			    "RPA already registered.\n");
			rval = QLA_ALREADY_REGISTERED;
		}

	} else {
		ql_dbg(ql_dbg_disc, vha, 0x2041,
		    "RPA exiting normally.\n");
	}

	return rval;
}

/**
 * qla2x00_fdmiv2_rhba() - perform RHBA FDMI v2 registration
 * @vha: HA context
 *
 * Returns 0 on success.
 */
static int
qla2x00_fdmiv2_rhba(scsi_qla_host_t *vha)
{
	int rval, alen;
	uint32_t size, sn;
	ms_iocb_entry_t *ms_pkt;
	struct ct_sns_req *ct_req;
	struct ct_sns_rsp *ct_rsp;
	void *entries;
	struct ct_fdmiv2_hba_attr *eiter;
	struct qla_hw_data *ha = vha->hw;
	struct init_cb_24xx *icb24 = (struct init_cb_24xx *)ha->init_cb;
	struct new_utsname *p_sysid = NULL;

	/* Issue RHBA */
	/* Prepare common MS IOCB */
	/*   Request size adjusted after CT preparation */
	ms_pkt = ha->isp_ops->prep_ms_fdmi_iocb(vha, 0, RHBA_RSP_SIZE);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_fdmi_req(ha->ct_sns, RHBA_CMD,
	    RHBA_RSP_SIZE);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare FDMI command arguments -- attribute block, attributes. */
	memcpy(ct_req->req.rhba2.hba_identifier, vha->port_name, WWN_SIZE);
	ct_req->req.rhba2.entry_count = cpu_to_be32(1);
	memcpy(ct_req->req.rhba2.port_name, vha->port_name, WWN_SIZE);
	size = 2 * WWN_SIZE + 4 + 4;

	/* Attributes */
	ct_req->req.rhba2.attrs.count = cpu_to_be32(FDMIV2_HBA_ATTR_COUNT);
	entries = ct_req->req.rhba2.hba_identifier;

	/* Nodename. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_NODE_NAME);
	eiter->len = cpu_to_be16(4 + WWN_SIZE);
	memcpy(eiter->a.node_name, vha->node_name, WWN_SIZE);
	size += 4 + WWN_SIZE;

	ql_dbg(ql_dbg_disc, vha, 0x207d,
	    "NodeName = %016llx.\n", wwn_to_u64(eiter->a.node_name));

	/* Manufacturer. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_MANUFACTURER);
	snprintf(eiter->a.manufacturer, sizeof(eiter->a.manufacturer),
	    "%s", "QLogic Corporation");
	eiter->a.manufacturer[strlen("QLogic Corporation")] = '\0';
	alen = strlen(eiter->a.manufacturer);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20a5,
	    "Manufacturer = %s.\n", eiter->a.manufacturer);

	/* Serial number. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_SERIAL_NUMBER);
	if (IS_FWI2_CAPABLE(ha))
		qla2xxx_get_vpd_field(vha, "SN", eiter->a.serial_num,
		    sizeof(eiter->a.serial_num));
	else {
		sn = ((ha->serial0 & 0x1f) << 16) |
			(ha->serial2 << 8) | ha->serial1;
		snprintf(eiter->a.serial_num, sizeof(eiter->a.serial_num),
		    "%c%05d", 'A' + sn / 100000, sn % 100000);
	}
	alen = strlen(eiter->a.serial_num);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20a6,
	    "Serial no. = %s.\n", eiter->a.serial_num);

	/* Model name. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_MODEL);
	snprintf(eiter->a.model, sizeof(eiter->a.model),
	    "%s", ha->model_number);
	alen = strlen(eiter->a.model);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20a7,
	    "Model Name = %s.\n", eiter->a.model);

	/* Model description. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_MODEL_DESCRIPTION);
	snprintf(eiter->a.model_desc, sizeof(eiter->a.model_desc),
	    "%s", ha->model_desc);
	alen = strlen(eiter->a.model_desc);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20a8,
	    "Model Desc = %s.\n", eiter->a.model_desc);

	/* Hardware version. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_HARDWARE_VERSION);
	if (!IS_FWI2_CAPABLE(ha)) {
		snprintf(eiter->a.hw_version, sizeof(eiter->a.hw_version),
		    "HW:%s", ha->adapter_id);
	} else if (qla2xxx_get_vpd_field(vha, "MN", eiter->a.hw_version,
		    sizeof(eiter->a.hw_version))) {
		;
	} else if (qla2xxx_get_vpd_field(vha, "EC", eiter->a.hw_version,
		    sizeof(eiter->a.hw_version))) {
		;
	} else {
		snprintf(eiter->a.hw_version, sizeof(eiter->a.hw_version),
		    "HW:%s", ha->adapter_id);
	}
	alen = strlen(eiter->a.hw_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20a9,
	    "Hardware ver = %s.\n", eiter->a.hw_version);

	/* Driver version. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_DRIVER_VERSION);
	snprintf(eiter->a.driver_version, sizeof(eiter->a.driver_version),
	    "%s", qla2x00_version_str);
	alen = strlen(eiter->a.driver_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20aa,
	    "Driver ver = %s.\n", eiter->a.driver_version);

	/* Option ROM version. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_OPTION_ROM_VERSION);
	snprintf(eiter->a.orom_version, sizeof(eiter->a.orom_version),
	    "%d.%02d", ha->bios_revision[1], ha->bios_revision[0]);
	alen = strlen(eiter->a.orom_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha , 0x20ab,
	    "Optrom version = %d.%02d.\n", eiter->a.orom_version[1],
	    eiter->a.orom_version[0]);

	/* Firmware version */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_FIRMWARE_VERSION);
	ha->isp_ops->fw_version_str(vha, eiter->a.fw_version,
	    sizeof(eiter->a.fw_version));
	alen = strlen(eiter->a.fw_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20ac,
	    "Firmware vers = %s.\n", eiter->a.fw_version);

	/* OS Name and Version */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_OS_NAME_AND_VERSION);
	p_sysid = utsname();
	if (p_sysid) {
		snprintf(eiter->a.os_version, sizeof(eiter->a.os_version),
		    "%s %s %s",
		    p_sysid->sysname, p_sysid->release, p_sysid->version);
	} else {
		snprintf(eiter->a.os_version, sizeof(eiter->a.os_version),
		    "%s %s", "Linux", fc_host_system_hostname(vha->host));
	}
	alen = strlen(eiter->a.os_version);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20ae,
	    "OS Name and Version = %s.\n", eiter->a.os_version);

	/* MAX CT Payload Length */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_MAXIMUM_CT_PAYLOAD_LENGTH);
	eiter->a.max_ct_len = IS_FWI2_CAPABLE(ha) ?
	    le16_to_cpu(icb24->frame_payload_size) :
	    le16_to_cpu(ha->init_cb->frame_payload_size);
	eiter->a.max_ct_len = cpu_to_be32(eiter->a.max_ct_len);
	eiter->len = cpu_to_be16(4 + 4);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20af,
	    "CT Payload Length = 0x%x.\n", eiter->a.max_ct_len);

	/* Node Sybolic Name */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_NODE_SYMBOLIC_NAME);
	qla2x00_get_sym_node_name(vha, eiter->a.sym_name,
	    sizeof(eiter->a.sym_name));
	alen = strlen(eiter->a.sym_name);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20b0,
	    "Symbolic Name = %s.\n", eiter->a.sym_name);

	/* Vendor Id */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_VENDOR_ID);
	eiter->a.vendor_id = cpu_to_be32(0x1077);
	eiter->len = cpu_to_be16(4 + 4);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20b1,
	    "Vendor Id = %x.\n", eiter->a.vendor_id);

	/* Num Ports */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_NUM_PORTS);
	eiter->a.num_ports = cpu_to_be32(1);
	eiter->len = cpu_to_be16(4 + 4);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20b2,
	    "Port Num = %x.\n", eiter->a.num_ports);

	/* Fabric Name */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_FABRIC_NAME);
	memcpy(eiter->a.fabric_name, vha->fabric_node_name, WWN_SIZE);
	eiter->len = cpu_to_be16(4 + WWN_SIZE);
	size += 4 + WWN_SIZE;

	ql_dbg(ql_dbg_disc, vha, 0x20b3,
	    "Fabric Name = %016llx.\n", wwn_to_u64(eiter->a.fabric_name));

	/* BIOS Version */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_BOOT_BIOS_NAME);
	snprintf(eiter->a.bios_name, sizeof(eiter->a.bios_name),
	    "BIOS %d.%02d", ha->bios_revision[1], ha->bios_revision[0]);
	alen = strlen(eiter->a.bios_name);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20b4,
	    "BIOS Name = %s\n", eiter->a.bios_name);

	/* Vendor Identifier */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_HBA_TYPE_VENDOR_IDENTIFIER);
	snprintf(eiter->a.vendor_identifier, sizeof(eiter->a.vendor_identifier),
	    "%s", "QLGC");
	alen = strlen(eiter->a.vendor_identifier);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x201b,
	    "Vendor Identifier = %s.\n", eiter->a.vendor_identifier);

	/* Update MS request size. */
	qla2x00_update_ms_fdmi_iocb(vha, size + 16);

	ql_dbg(ql_dbg_disc, vha, 0x20b5,
	    "RHBA identifier = %016llx.\n",
	    wwn_to_u64(ct_req->req.rhba2.hba_identifier));
	ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x20b6,
	    entries, size);

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x20b7,
		    "RHBA issue IOCB failed (%d).\n", rval);
	} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp, "RHBA") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;

		if (ct_rsp->header.reason_code == CT_REASON_CANNOT_PERFORM &&
		    ct_rsp->header.explanation_code ==
		    CT_EXPL_ALREADY_REGISTERED) {
			ql_dbg(ql_dbg_disc, vha, 0x20b8,
			    "HBA already registered.\n");
			rval = QLA_ALREADY_REGISTERED;
		} else {
			ql_dbg(ql_dbg_disc, vha, 0x2016,
			    "RHBA FDMI v2 failed, CT Reason code: 0x%x, CT Explanation 0x%x\n",
			    ct_rsp->header.reason_code,
			    ct_rsp->header.explanation_code);
		}
	} else {
		ql_dbg(ql_dbg_disc, vha, 0x20b9,
		    "RHBA FDMI V2 exiting normally.\n");
	}

	return rval;
}

/**
 * qla2x00_fdmi_dhba() -
 * @vha: HA context
 *
 * Returns 0 on success.
 */
static int
qla2x00_fdmi_dhba(scsi_qla_host_t *vha)
{
	int rval;
	struct qla_hw_data *ha = vha->hw;
	ms_iocb_entry_t *ms_pkt;
	struct ct_sns_req *ct_req;
	struct ct_sns_rsp *ct_rsp;

	/* Issue RPA */
	/* Prepare common MS IOCB */
	ms_pkt = ha->isp_ops->prep_ms_fdmi_iocb(vha, DHBA_REQ_SIZE,
	    DHBA_RSP_SIZE);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_fdmi_req(ha->ct_sns, DHBA_CMD, DHBA_RSP_SIZE);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare FDMI command arguments -- portname. */
	memcpy(ct_req->req.dhba.port_name, vha->port_name, WWN_SIZE);

	ql_dbg(ql_dbg_disc, vha, 0x2036,
	    "DHBA portname = %8phN.\n", ct_req->req.dhba.port_name);

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x2037,
		    "DHBA issue IOCB failed (%d).\n", rval);
	} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp, "DHBA") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;
	} else {
		ql_dbg(ql_dbg_disc, vha, 0x2038,
		    "DHBA exiting normally.\n");
	}

	return rval;
}

/**
 * qla2x00_fdmiv2_rpa() -
 * @vha: HA context
 *
 * Returns 0 on success.
 */
static int
qla2x00_fdmiv2_rpa(scsi_qla_host_t *vha)
{
	int rval, alen;
	uint32_t size;
	struct qla_hw_data *ha = vha->hw;
	ms_iocb_entry_t *ms_pkt;
	struct ct_sns_req *ct_req;
	struct ct_sns_rsp *ct_rsp;
	void *entries;
	struct ct_fdmiv2_port_attr *eiter;
	struct init_cb_24xx *icb24 = (struct init_cb_24xx *)ha->init_cb;
	struct new_utsname *p_sysid = NULL;

	/* Issue RPA */
	/* Prepare common MS IOCB */
	/*   Request size adjusted after CT preparation */
	ms_pkt = ha->isp_ops->prep_ms_fdmi_iocb(vha, 0, RPA_RSP_SIZE);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_fdmi_req(ha->ct_sns, RPA_CMD, RPA_RSP_SIZE);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare FDMI command arguments -- attribute block, attributes. */
	memcpy(ct_req->req.rpa2.port_name, vha->port_name, WWN_SIZE);
	size = WWN_SIZE + 4;

	/* Attributes */
	ct_req->req.rpa2.attrs.count = cpu_to_be32(FDMIV2_PORT_ATTR_COUNT);
	entries = ct_req->req.rpa2.port_name;

	/* FC4 types. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_FC4_TYPES);
	eiter->len = cpu_to_be16(4 + 32);
	eiter->a.fc4_types[2] = 0x01;
	size += 4 + 32;

	ql_dbg(ql_dbg_disc, vha, 0x20ba,
	    "FC4_TYPES=%02x %02x.\n",
	    eiter->a.fc4_types[2],
	    eiter->a.fc4_types[1]);

	if (vha->flags.nvme_enabled) {
		eiter->a.fc4_types[6] = 1;	/* NVMe type 28h */
		ql_dbg(ql_dbg_disc, vha, 0x211f,
		    "NVME FC4 Type = %02x 0x0 0x0 0x0 0x0 0x0.\n",
		    eiter->a.fc4_types[6]);
	}

	/* Supported speed. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_SUPPORT_SPEED);
	eiter->len = cpu_to_be16(4 + 4);
	if (IS_CNA_CAPABLE(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_10GB);
	else if (IS_QLA27XX(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_32GB|
		    FDMI_PORT_SPEED_16GB|
		    FDMI_PORT_SPEED_8GB);
	else if (IS_QLA2031(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_16GB|
		    FDMI_PORT_SPEED_8GB|
		    FDMI_PORT_SPEED_4GB);
	else if (IS_QLA25XX(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_8GB|
		    FDMI_PORT_SPEED_4GB|
		    FDMI_PORT_SPEED_2GB|
		    FDMI_PORT_SPEED_1GB);
	else if (IS_QLA24XX_TYPE(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_4GB|
		    FDMI_PORT_SPEED_2GB|
		    FDMI_PORT_SPEED_1GB);
	else if (IS_QLA23XX(ha))
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_2GB|
		    FDMI_PORT_SPEED_1GB);
	else
		eiter->a.sup_speed = cpu_to_be32(
		    FDMI_PORT_SPEED_1GB);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20bb,
	    "Supported Port Speed = %x.\n", eiter->a.sup_speed);

	/* Current speed. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_CURRENT_SPEED);
	eiter->len = cpu_to_be16(4 + 4);
	switch (ha->link_data_rate) {
	case PORT_SPEED_1GB:
		eiter->a.cur_speed = cpu_to_be32(FDMI_PORT_SPEED_1GB);
		break;
	case PORT_SPEED_2GB:
		eiter->a.cur_speed = cpu_to_be32(FDMI_PORT_SPEED_2GB);
		break;
	case PORT_SPEED_4GB:
		eiter->a.cur_speed = cpu_to_be32(FDMI_PORT_SPEED_4GB);
		break;
	case PORT_SPEED_8GB:
		eiter->a.cur_speed = cpu_to_be32(FDMI_PORT_SPEED_8GB);
		break;
	case PORT_SPEED_10GB:
		eiter->a.cur_speed = cpu_to_be32(FDMI_PORT_SPEED_10GB);
		break;
	case PORT_SPEED_16GB:
		eiter->a.cur_speed = cpu_to_be32(FDMI_PORT_SPEED_16GB);
		break;
	case PORT_SPEED_32GB:
		eiter->a.cur_speed = cpu_to_be32(FDMI_PORT_SPEED_32GB);
		break;
	default:
		eiter->a.cur_speed = cpu_to_be32(FDMI_PORT_SPEED_UNKNOWN);
		break;
	}
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x2017,
	    "Current_Speed = %x.\n", eiter->a.cur_speed);

	/* Max frame size. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_MAX_FRAME_SIZE);
	eiter->len = cpu_to_be16(4 + 4);
	eiter->a.max_frame_size = IS_FWI2_CAPABLE(ha) ?
	    le16_to_cpu(icb24->frame_payload_size):
	    le16_to_cpu(ha->init_cb->frame_payload_size);
	eiter->a.max_frame_size = cpu_to_be32(eiter->a.max_frame_size);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20bc,
	    "Max_Frame_Size = %x.\n", eiter->a.max_frame_size);

	/* OS device name. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_OS_DEVICE_NAME);
	alen = strlen(QLA2XXX_DRIVER_NAME);
	snprintf(eiter->a.os_dev_name, sizeof(eiter->a.os_dev_name),
	    "%s:host%lu", QLA2XXX_DRIVER_NAME, vha->host_no);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20be,
	    "OS_Device_Name = %s.\n", eiter->a.os_dev_name);

	/* Hostname. */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_HOST_NAME);
	p_sysid = utsname();
	if (p_sysid) {
		snprintf(eiter->a.host_name, sizeof(eiter->a.host_name),
		    "%s", p_sysid->nodename);
	} else {
		snprintf(eiter->a.host_name, sizeof(eiter->a.host_name),
		    "%s", fc_host_system_hostname(vha->host));
	}
	alen = strlen(eiter->a.host_name);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x201a,
	    "HostName=%s.\n", eiter->a.host_name);

	/* Node Name */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_NODE_NAME);
	memcpy(eiter->a.node_name, vha->node_name, WWN_SIZE);
	eiter->len = cpu_to_be16(4 + WWN_SIZE);
	size += 4 + WWN_SIZE;

	ql_dbg(ql_dbg_disc, vha, 0x20c0,
	    "Node Name = %016llx.\n", wwn_to_u64(eiter->a.node_name));

	/* Port Name */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_NAME);
	memcpy(eiter->a.port_name, vha->port_name, WWN_SIZE);
	eiter->len = cpu_to_be16(4 + WWN_SIZE);
	size += 4 + WWN_SIZE;

	ql_dbg(ql_dbg_disc, vha, 0x20c1,
	    "Port Name = %016llx.\n", wwn_to_u64(eiter->a.port_name));

	/* Port Symbolic Name */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_SYM_NAME);
	qla2x00_get_sym_node_name(vha, eiter->a.port_sym_name,
	    sizeof(eiter->a.port_sym_name));
	alen = strlen(eiter->a.port_sym_name);
	alen += 4 - (alen & 3);
	eiter->len = cpu_to_be16(4 + alen);
	size += 4 + alen;

	ql_dbg(ql_dbg_disc, vha, 0x20c2,
	    "port symbolic name = %s\n", eiter->a.port_sym_name);

	/* Port Type */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_TYPE);
	eiter->a.port_type = cpu_to_be32(NS_NX_PORT_TYPE);
	eiter->len = cpu_to_be16(4 + 4);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20c3,
	    "Port Type = %x.\n", eiter->a.port_type);

	/* Class of Service  */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_SUPP_COS);
	eiter->a.port_supported_cos = cpu_to_be32(FC_CLASS_3);
	eiter->len = cpu_to_be16(4 + 4);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20c4,
	    "Supported COS = %08x\n", eiter->a.port_supported_cos);

	/* Port Fabric Name */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_FABRIC_NAME);
	memcpy(eiter->a.fabric_name, vha->fabric_node_name, WWN_SIZE);
	eiter->len = cpu_to_be16(4 + WWN_SIZE);
	size += 4 + WWN_SIZE;

	ql_dbg(ql_dbg_disc, vha, 0x20c5,
	    "Fabric Name = %016llx.\n", wwn_to_u64(eiter->a.fabric_name));

	/* FC4_type */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_FC4_TYPE);
	eiter->a.port_fc4_type[0] = 0;
	eiter->a.port_fc4_type[1] = 0;
	eiter->a.port_fc4_type[2] = 1;
	eiter->a.port_fc4_type[3] = 0;
	eiter->len = cpu_to_be16(4 + 32);
	size += 4 + 32;

	ql_dbg(ql_dbg_disc, vha, 0x20c6,
	    "Port Active FC4 Type = %02x %02x.\n",
	    eiter->a.port_fc4_type[2], eiter->a.port_fc4_type[1]);

	if (vha->flags.nvme_enabled) {
		eiter->a.port_fc4_type[4] = 0;
		eiter->a.port_fc4_type[5] = 0;
		eiter->a.port_fc4_type[6] = 1;	/* NVMe type 28h */
		ql_dbg(ql_dbg_disc, vha, 0x2120,
		    "NVME Port Active FC4 Type = %02x 0x0 0x0 0x0 0x0 0x0.\n",
		    eiter->a.port_fc4_type[6]);
	}

	/* Port State */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_STATE);
	eiter->a.port_state = cpu_to_be32(1);
	eiter->len = cpu_to_be16(4 + 4);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20c7,
	    "Port State = %x.\n", eiter->a.port_state);

	/* Number of Ports */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_COUNT);
	eiter->a.num_ports = cpu_to_be32(1);
	eiter->len = cpu_to_be16(4 + 4);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x20c8,
	    "Number of ports = %x.\n", eiter->a.num_ports);

	/* Port Id */
	eiter = entries + size;
	eiter->type = cpu_to_be16(FDMI_PORT_ID);
	eiter->a.port_id = cpu_to_be32(vha->d_id.b24);
	eiter->len = cpu_to_be16(4 + 4);
	size += 4 + 4;

	ql_dbg(ql_dbg_disc, vha, 0x201c,
	    "Port Id = %x.\n", eiter->a.port_id);

	/* Update MS request size. */
	qla2x00_update_ms_fdmi_iocb(vha, size + 16);

	ql_dbg(ql_dbg_disc, vha, 0x2018,
	    "RPA portname= %8phN size=%d.\n", ct_req->req.rpa.port_name, size);
	ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x20ca,
	    entries, size);

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		ql_dbg(ql_dbg_disc, vha, 0x20cb,
		    "RPA FDMI v2 issue IOCB failed (%d).\n", rval);
	} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp, "RPA") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;
		if (ct_rsp->header.reason_code == CT_REASON_CANNOT_PERFORM &&
		    ct_rsp->header.explanation_code ==
		    CT_EXPL_ALREADY_REGISTERED) {
			ql_dbg(ql_dbg_disc, vha, 0x20ce,
			    "RPA FDMI v2 already registered\n");
			rval = QLA_ALREADY_REGISTERED;
		} else {
			ql_dbg(ql_dbg_disc, vha, 0x2020,
			    "RPA FDMI v2 failed, CT Reason code: 0x%x, CT Explanation 0x%x\n",
			    ct_rsp->header.reason_code,
			    ct_rsp->header.explanation_code);
		}
	} else {
		ql_dbg(ql_dbg_disc, vha, 0x20cc,
		    "RPA FDMI V2 exiting normally.\n");
	}

	return rval;
}

/**
 * qla2x00_fdmi_register() -
 * @vha: HA context
 *
 * Returns 0 on success.
 */
int
qla2x00_fdmi_register(scsi_qla_host_t *vha)
{
	int rval = QLA_FUNCTION_FAILED;
	struct qla_hw_data *ha = vha->hw;

	if (IS_QLA2100(ha) || IS_QLA2200(ha) ||
	    IS_QLAFX00(ha))
		return QLA_FUNCTION_FAILED;

	rval = qla2x00_mgmt_svr_login(vha);
	if (rval)
		return rval;

	rval = qla2x00_fdmiv2_rhba(vha);
	if (rval) {
		if (rval != QLA_ALREADY_REGISTERED)
			goto try_fdmi;

		rval = qla2x00_fdmi_dhba(vha);
		if (rval)
			goto try_fdmi;

		rval = qla2x00_fdmiv2_rhba(vha);
		if (rval)
			goto try_fdmi;
	}
	rval = qla2x00_fdmiv2_rpa(vha);
	if (rval)
		goto try_fdmi;

	goto out;

try_fdmi:
	rval = qla2x00_fdmi_rhba(vha);
	if (rval) {
		if (rval != QLA_ALREADY_REGISTERED)
			return rval;

		rval = qla2x00_fdmi_dhba(vha);
		if (rval)
			return rval;

		rval = qla2x00_fdmi_rhba(vha);
		if (rval)
			return rval;
	}
	rval = qla2x00_fdmi_rpa(vha);
out:
	return rval;
}

/**
 * qla2x00_gfpn_id() - SNS Get Fabric Port Name (GFPN_ID) query.
 * @vha: HA context
 * @list: switch info entries to populate
 *
 * Returns 0 on success.
 */
int
qla2x00_gfpn_id(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval = QLA_SUCCESS;
	uint16_t	i;
	struct qla_hw_data *ha = vha->hw;
	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;
	struct ct_arg arg;

	if (!IS_IIDMA_CAPABLE(ha))
		return QLA_FUNCTION_FAILED;

	arg.iocb = ha->ms_iocb;
	arg.req_dma = ha->ct_sns_dma;
	arg.rsp_dma = ha->ct_sns_dma;
	arg.req_size = GFPN_ID_REQ_SIZE;
	arg.rsp_size = GFPN_ID_RSP_SIZE;
	arg.nport_handle = NPH_SNS;

	for (i = 0; i < ha->max_fibre_devices; i++) {
		/* Issue GFPN_ID */
		/* Prepare common MS IOCB */
		ms_pkt = ha->isp_ops->prep_ms_iocb(vha, &arg);

		/* Prepare CT request */
		ct_req = qla2x00_prep_ct_req(ha->ct_sns, GFPN_ID_CMD,
		    GFPN_ID_RSP_SIZE);
		ct_rsp = &ha->ct_sns->p.rsp;

		/* Prepare CT arguments -- port_id */
		ct_req->req.port_id.port_id[0] = list[i].d_id.b.domain;
		ct_req->req.port_id.port_id[1] = list[i].d_id.b.area;
		ct_req->req.port_id.port_id[2] = list[i].d_id.b.al_pa;

		/* Execute MS IOCB */
		rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
		    sizeof(ms_iocb_entry_t));
		if (rval != QLA_SUCCESS) {
			/*EMPTY*/
			ql_dbg(ql_dbg_disc, vha, 0x2023,
			    "GFPN_ID issue IOCB failed (%d).\n", rval);
			break;
		} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp,
		    "GFPN_ID") != QLA_SUCCESS) {
			rval = QLA_FUNCTION_FAILED;
			break;
		} else {
			/* Save fabric portname */
			memcpy(list[i].fabric_port_name,
			    ct_rsp->rsp.gfpn_id.port_name, WWN_SIZE);
		}

		/* Last device exit. */
		if (list[i].d_id.b.rsvd_1 != 0)
			break;
	}

	return (rval);
}


static inline struct ct_sns_req *
qla24xx_prep_ct_fm_req(struct ct_sns_pkt *p, uint16_t cmd,
    uint16_t rsp_size)
{
	memset(p, 0, sizeof(struct ct_sns_pkt));

	p->p.req.header.revision = 0x01;
	p->p.req.header.gs_type = 0xFA;
	p->p.req.header.gs_subtype = 0x01;
	p->p.req.command = cpu_to_be16(cmd);
	p->p.req.max_rsp_size = cpu_to_be16((rsp_size - 16) / 4);

	return &p->p.req;
}

/**
 * qla2x00_gpsc() - FCS Get Port Speed Capabilities (GPSC) query.
 * @vha: HA context
 * @list: switch info entries to populate
 *
 * Returns 0 on success.
 */
int
qla2x00_gpsc(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval;
	uint16_t	i;
	struct qla_hw_data *ha = vha->hw;
	ms_iocb_entry_t *ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;
	struct ct_arg arg;

	if (!IS_IIDMA_CAPABLE(ha))
		return QLA_FUNCTION_FAILED;
	if (!ha->flags.gpsc_supported)
		return QLA_FUNCTION_FAILED;

	rval = qla2x00_mgmt_svr_login(vha);
	if (rval)
		return rval;

	arg.iocb = ha->ms_iocb;
	arg.req_dma = ha->ct_sns_dma;
	arg.rsp_dma = ha->ct_sns_dma;
	arg.req_size = GPSC_REQ_SIZE;
	arg.rsp_size = GPSC_RSP_SIZE;
	arg.nport_handle = vha->mgmt_svr_loop_id;

	for (i = 0; i < ha->max_fibre_devices; i++) {
		/* Issue GFPN_ID */
		/* Prepare common MS IOCB */
		ms_pkt = qla24xx_prep_ms_iocb(vha, &arg);

		/* Prepare CT request */
		ct_req = qla24xx_prep_ct_fm_req(ha->ct_sns, GPSC_CMD,
		    GPSC_RSP_SIZE);
		ct_rsp = &ha->ct_sns->p.rsp;

		/* Prepare CT arguments -- port_name */
		memcpy(ct_req->req.gpsc.port_name, list[i].fabric_port_name,
		    WWN_SIZE);

		/* Execute MS IOCB */
		rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
		    sizeof(ms_iocb_entry_t));
		if (rval != QLA_SUCCESS) {
			/*EMPTY*/
			ql_dbg(ql_dbg_disc, vha, 0x2059,
			    "GPSC issue IOCB failed (%d).\n", rval);
		} else if ((rval = qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp,
		    "GPSC")) != QLA_SUCCESS) {
			/* FM command unsupported? */
			if (rval == QLA_INVALID_COMMAND &&
			    (ct_rsp->header.reason_code ==
				CT_REASON_INVALID_COMMAND_CODE ||
			     ct_rsp->header.reason_code ==
				CT_REASON_COMMAND_UNSUPPORTED)) {
				ql_dbg(ql_dbg_disc, vha, 0x205a,
				    "GPSC command unsupported, disabling "
				    "query.\n");
				ha->flags.gpsc_supported = 0;
				rval = QLA_FUNCTION_FAILED;
				break;
			}
			rval = QLA_FUNCTION_FAILED;
		} else {
			/* Save port-speed */
			switch (be16_to_cpu(ct_rsp->rsp.gpsc.speed)) {
			case BIT_15:
				list[i].fp_speed = PORT_SPEED_1GB;
				break;
			case BIT_14:
				list[i].fp_speed = PORT_SPEED_2GB;
				break;
			case BIT_13:
				list[i].fp_speed = PORT_SPEED_4GB;
				break;
			case BIT_12:
				list[i].fp_speed = PORT_SPEED_10GB;
				break;
			case BIT_11:
				list[i].fp_speed = PORT_SPEED_8GB;
				break;
			case BIT_10:
				list[i].fp_speed = PORT_SPEED_16GB;
				break;
			case BIT_8:
				list[i].fp_speed = PORT_SPEED_32GB;
				break;
			}

			ql_dbg(ql_dbg_disc, vha, 0x205b,
			    "GPSC ext entry - fpn "
			    "%8phN speeds=%04x speed=%04x.\n",
			    list[i].fabric_port_name,
			    be16_to_cpu(ct_rsp->rsp.gpsc.speeds),
			    be16_to_cpu(ct_rsp->rsp.gpsc.speed));
		}

		/* Last device exit. */
		if (list[i].d_id.b.rsvd_1 != 0)
			break;
	}

	return (rval);
}

/**
 * qla2x00_gff_id() - SNS Get FC-4 Features (GFF_ID) query.
 *
 * @vha: HA context
 * @list: switch info entries to populate
 *
 */
void
qla2x00_gff_id(scsi_qla_host_t *vha, sw_info_t *list)
{
	int		rval;
	uint16_t	i;

	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;
	struct qla_hw_data *ha = vha->hw;
	uint8_t fcp_scsi_features = 0;
	struct ct_arg arg;

	for (i = 0; i < ha->max_fibre_devices; i++) {
		/* Set default FC4 Type as UNKNOWN so the default is to
		 * Process this port */
		list[i].fc4_type = FC4_TYPE_UNKNOWN;

		/* Do not attempt GFF_ID if we are not FWI_2 capable */
		if (!IS_FWI2_CAPABLE(ha))
			continue;

		arg.iocb = ha->ms_iocb;
		arg.req_dma = ha->ct_sns_dma;
		arg.rsp_dma = ha->ct_sns_dma;
		arg.req_size = GFF_ID_REQ_SIZE;
		arg.rsp_size = GFF_ID_RSP_SIZE;
		arg.nport_handle = NPH_SNS;

		/* Prepare common MS IOCB */
		ms_pkt = ha->isp_ops->prep_ms_iocb(vha, &arg);

		/* Prepare CT request */
		ct_req = qla2x00_prep_ct_req(ha->ct_sns, GFF_ID_CMD,
		    GFF_ID_RSP_SIZE);
		ct_rsp = &ha->ct_sns->p.rsp;

		/* Prepare CT arguments -- port_id */
		ct_req->req.port_id.port_id[0] = list[i].d_id.b.domain;
		ct_req->req.port_id.port_id[1] = list[i].d_id.b.area;
		ct_req->req.port_id.port_id[2] = list[i].d_id.b.al_pa;

		/* Execute MS IOCB */
		rval = qla2x00_issue_iocb(vha, ha->ms_iocb, ha->ms_iocb_dma,
		   sizeof(ms_iocb_entry_t));

		if (rval != QLA_SUCCESS) {
			ql_dbg(ql_dbg_disc, vha, 0x205c,
			    "GFF_ID issue IOCB failed (%d).\n", rval);
		} else if (qla2x00_chk_ms_status(vha, ms_pkt, ct_rsp,
			       "GFF_ID") != QLA_SUCCESS) {
			ql_dbg(ql_dbg_disc, vha, 0x205d,
			    "GFF_ID IOCB status had a failure status code.\n");
		} else {
			fcp_scsi_features =
			   ct_rsp->rsp.gff_id.fc4_features[GFF_FCP_SCSI_OFFSET];
			fcp_scsi_features &= 0x0f;

			if (fcp_scsi_features)
				list[i].fc4_type = FC4_TYPE_FCP_SCSI;
			else
				list[i].fc4_type = FC4_TYPE_OTHER;

			list[i].fc4f_nvme =
			    ct_rsp->rsp.gff_id.fc4_features[GFF_NVME_OFFSET];
			list[i].fc4f_nvme &= 0xf;
		}

		/* Last device exit. */
		if (list[i].d_id.b.rsvd_1 != 0)
			break;
	}
}

/* GID_PN completion processing. */
void qla24xx_handle_gidpn_event(scsi_qla_host_t *vha, struct event_arg *ea)
{
	fc_port_t *fcport = ea->fcport;

	ql_dbg(ql_dbg_disc, vha, 0x201d,
	    "%s %8phC DS %d LS %d rc %d login %d|%d rscn %d|%d lid %d\n",
	    __func__, fcport->port_name, fcport->disc_state,
	    fcport->fw_login_state, ea->rc, fcport->login_gen, ea->sp->gen2,
	    fcport->rscn_gen, ea->sp->gen1, fcport->loop_id);

	if (fcport->disc_state == DSC_DELETE_PEND)
		return;

	if (ea->sp->gen2 != fcport->login_gen) {
		/* PLOGI/PRLI/LOGO came in while cmd was out.*/
		ql_dbg(ql_dbg_disc, vha, 0x201e,
		    "%s %8phC generation changed rscn %d|%d n",
		    __func__, fcport->port_name, fcport->last_rscn_gen,
		    fcport->rscn_gen);
		return;
	}

	if (!ea->rc) {
		if (ea->sp->gen1 == fcport->rscn_gen) {
			fcport->scan_state = QLA_FCPORT_FOUND;
			fcport->flags |= FCF_FABRIC_DEVICE;

			if (fcport->d_id.b24 == ea->id.b24) {
				/* cable plugged into the same place */
				switch (vha->host->active_mode) {
				case MODE_TARGET:
					if (fcport->fw_login_state ==
					    DSC_LS_PRLI_COMP) {
						u16 data[2];
						/*
						 * Late RSCN was delivered.
						 * Remote port already login'ed.
						 */
						ql_dbg(ql_dbg_disc, vha, 0x201f,
						    "%s %d %8phC post adisc\n",
						    __func__, __LINE__,
						    fcport->port_name);
						data[0] = data[1] = 0;
						qla2x00_post_async_adisc_work(
						    vha, fcport, data);
					}
					break;
				case MODE_INITIATOR:
				case MODE_DUAL:
				default:
					ql_dbg(ql_dbg_disc, vha, 0x201f,
					    "%s %d %8phC post %s\n", __func__,
					    __LINE__, fcport->port_name,
					    (atomic_read(&fcport->state) ==
					    FCS_ONLINE) ? "adisc" : "gnl");

					if (atomic_read(&fcport->state) ==
					    FCS_ONLINE) {
						u16 data[2];

						data[0] = data[1] = 0;
						qla2x00_post_async_adisc_work(
						    vha, fcport, data);
					} else {
						qla24xx_post_gnl_work(vha,
						    fcport);
					}
					break;
				}
			} else { /* fcport->d_id.b24 != ea->id.b24 */
				fcport->d_id.b24 = ea->id.b24;
				fcport->id_changed = 1;
				if (fcport->deleted != QLA_SESS_DELETED) {
					ql_dbg(ql_dbg_disc, vha, 0x2021,
					    "%s %d %8phC post del sess\n",
					    __func__, __LINE__, fcport->port_name);
					qlt_schedule_sess_for_deletion(fcport);
				}
			}
		} else { /* ea->sp->gen1 != fcport->rscn_gen */
			ql_dbg(ql_dbg_disc, vha, 0x2022,
			    "%s %d %8phC post gidpn\n",
			    __func__, __LINE__, fcport->port_name);
			/* rscn came in while cmd was out */
			qla24xx_post_gidpn_work(vha, fcport);
		}
	} else { /* ea->rc */
		/* cable pulled */
		if (ea->sp->gen1 == fcport->rscn_gen) {
			if (ea->sp->gen2 == fcport->login_gen) {
				ql_dbg(ql_dbg_disc, vha, 0x2042,
				    "%s %d %8phC post del sess\n", __func__,
				    __LINE__, fcport->port_name);
				qlt_schedule_sess_for_deletion(fcport);
			} else {
				ql_dbg(ql_dbg_disc, vha, 0x2045,
				    "%s %d %8phC login\n", __func__, __LINE__,
				    fcport->port_name);
				qla24xx_fcport_handle_login(vha, fcport);
			}
		} else {
			ql_dbg(ql_dbg_disc, vha, 0x2049,
			    "%s %d %8phC post gidpn\n", __func__, __LINE__,
			    fcport->port_name);
			qla24xx_post_gidpn_work(vha, fcport);
		}
	}
} /* gidpn_event */

static void qla2x00_async_gidpn_sp_done(void *s, int res)
{
	struct srb *sp = s;
	struct scsi_qla_host *vha = sp->vha;
	fc_port_t *fcport = sp->fcport;
	u8 *id = fcport->ct_desc.ct_sns->p.rsp.rsp.gid_pn.port_id;
	struct event_arg ea;

	fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);

	memset(&ea, 0, sizeof(ea));
	ea.fcport = fcport;
	ea.id.b.domain = id[0];
	ea.id.b.area = id[1];
	ea.id.b.al_pa = id[2];
	ea.sp = sp;
	ea.rc = res;
	ea.event = FCME_GIDPN_DONE;

	if (res == QLA_FUNCTION_TIMEOUT) {
		ql_dbg(ql_dbg_disc, sp->vha, 0xffff,
		    "Async done-%s WWPN %8phC timed out.\n",
		    sp->name, fcport->port_name);
		qla24xx_post_gidpn_work(sp->vha, fcport);
		sp->free(sp);
		return;
	} else if (res) {
		ql_dbg(ql_dbg_disc, sp->vha, 0xffff,
		    "Async done-%s fail res %x, WWPN %8phC\n",
		    sp->name, res, fcport->port_name);
	} else {
		ql_dbg(ql_dbg_disc, vha, 0x204f,
		    "Async done-%s good WWPN %8phC ID %3phC\n",
		    sp->name, fcport->port_name, id);
	}

	qla2x00_fcport_event_handler(vha, &ea);

	sp->free(sp);
}

int qla24xx_async_gidpn(scsi_qla_host_t *vha, fc_port_t *fcport)
{
	int rval = QLA_FUNCTION_FAILED;
	struct ct_sns_req       *ct_req;
	srb_t *sp;

	if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT))
		return rval;

	fcport->disc_state = DSC_GID_PN;
	fcport->scan_state = QLA_FCPORT_SCAN;
	sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
	if (!sp)
		goto done;

	fcport->flags |= FCF_ASYNC_SENT;
	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "gidpn";
	sp->gen1 = fcport->rscn_gen;
	sp->gen2 = fcport->login_gen;

	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	/* CT_IU preamble  */
	ct_req = qla2x00_prep_ct_req(fcport->ct_desc.ct_sns, GID_PN_CMD,
		GID_PN_RSP_SIZE);

	/* GIDPN req */
	memcpy(ct_req->req.gid_pn.port_name, fcport->port_name,
		WWN_SIZE);

	/* req & rsp use the same buffer */
	sp->u.iocb_cmd.u.ctarg.req = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.req_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.rsp = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.rsp_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.req_size = GID_PN_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = GID_PN_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	sp->done = qla2x00_async_gidpn_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS)
		goto done_free_sp;

	ql_dbg(ql_dbg_disc, vha, 0x20a4,
	    "Async-%s - %8phC hdl=%x loopid=%x portid %02x%02x%02x.\n",
	    sp->name, fcport->port_name,
	    sp->handle, fcport->loop_id, fcport->d_id.b.domain,
	    fcport->d_id.b.area, fcport->d_id.b.al_pa);
	return rval;

done_free_sp:
	sp->free(sp);
	fcport->flags &= ~FCF_ASYNC_SENT;
done:
	fcport->flags &= ~FCF_ASYNC_ACTIVE;
	return rval;
}

int qla24xx_post_gidpn_work(struct scsi_qla_host *vha, fc_port_t *fcport)
{
	struct qla_work_evt *e;
	int ls;

	ls = atomic_read(&vha->loop_state);
	if (((ls != LOOP_READY) && (ls != LOOP_UP)) ||
		test_bit(UNLOADING, &vha->dpc_flags))
		return 0;

	e = qla2x00_alloc_work(vha, QLA_EVT_GIDPN);
	if (!e)
		return QLA_FUNCTION_FAILED;

	e->u.fcport.fcport = fcport;
	fcport->flags |= FCF_ASYNC_ACTIVE;
	return qla2x00_post_work(vha, e);
}

int qla24xx_post_gpsc_work(struct scsi_qla_host *vha, fc_port_t *fcport)
{
	struct qla_work_evt *e;

	e = qla2x00_alloc_work(vha, QLA_EVT_GPSC);
	if (!e)
		return QLA_FUNCTION_FAILED;

	e->u.fcport.fcport = fcport;
	fcport->flags |= FCF_ASYNC_ACTIVE;
	return qla2x00_post_work(vha, e);
}

void qla24xx_handle_gpsc_event(scsi_qla_host_t *vha, struct event_arg *ea)
{
	struct fc_port *fcport = ea->fcport;

	ql_dbg(ql_dbg_disc, vha, 0x20d8,
	    "%s %8phC DS %d LS %d rc %d login %d|%d rscn %d|%d lid %d\n",
	    __func__, fcport->port_name, fcport->disc_state,
	    fcport->fw_login_state, ea->rc, ea->sp->gen2, fcport->login_gen,
	    ea->sp->gen2, fcport->rscn_gen|ea->sp->gen1, fcport->loop_id);

	if (fcport->disc_state == DSC_DELETE_PEND)
		return;

	if (ea->sp->gen2 != fcport->login_gen) {
		/* target side must have changed it. */
		ql_dbg(ql_dbg_disc, vha, 0x20d3,
		    "%s %8phC generation changed\n",
		    __func__, fcport->port_name);
		return;
	} else if (ea->sp->gen1 != fcport->rscn_gen) {
		ql_dbg(ql_dbg_disc, vha, 0x20d4, "%s %d %8phC post gidpn\n",
		    __func__, __LINE__, fcport->port_name);
		qla24xx_post_gidpn_work(vha, fcport);
		return;
	}

	qla24xx_post_upd_fcport_work(vha, ea->fcport);
}

static void qla24xx_async_gpsc_sp_done(void *s, int res)
{
	struct srb *sp = s;
	struct scsi_qla_host *vha = sp->vha;
	struct qla_hw_data *ha = vha->hw;
	fc_port_t *fcport = sp->fcport;
	struct ct_sns_rsp       *ct_rsp;
	struct event_arg ea;

	ct_rsp = &fcport->ct_desc.ct_sns->p.rsp;

	ql_dbg(ql_dbg_disc, vha, 0x2053,
	    "Async done-%s res %x, WWPN %8phC \n",
	    sp->name, res, fcport->port_name);

	fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);

	if (res == (DID_ERROR << 16)) {
		/* entry status error */
		goto done;
	} else if (res) {
		if ((ct_rsp->header.reason_code ==
			 CT_REASON_INVALID_COMMAND_CODE) ||
			(ct_rsp->header.reason_code ==
			CT_REASON_COMMAND_UNSUPPORTED)) {
			ql_dbg(ql_dbg_disc, vha, 0x2019,
			    "GPSC command unsupported, disabling query.\n");
			ha->flags.gpsc_supported = 0;
			res = QLA_SUCCESS;
		}
	} else {
		switch (be16_to_cpu(ct_rsp->rsp.gpsc.speed)) {
		case BIT_15:
			fcport->fp_speed = PORT_SPEED_1GB;
			break;
		case BIT_14:
			fcport->fp_speed = PORT_SPEED_2GB;
			break;
		case BIT_13:
			fcport->fp_speed = PORT_SPEED_4GB;
			break;
		case BIT_12:
			fcport->fp_speed = PORT_SPEED_10GB;
			break;
		case BIT_11:
			fcport->fp_speed = PORT_SPEED_8GB;
			break;
		case BIT_10:
			fcport->fp_speed = PORT_SPEED_16GB;
			break;
		case BIT_8:
			fcport->fp_speed = PORT_SPEED_32GB;
			break;
		}

		ql_dbg(ql_dbg_disc, vha, 0x2054,
		    "Async-%s OUT WWPN %8phC speeds=%04x speed=%04x.\n",
		    sp->name, fcport->fabric_port_name,
		    be16_to_cpu(ct_rsp->rsp.gpsc.speeds),
		    be16_to_cpu(ct_rsp->rsp.gpsc.speed));
	}
done:
	memset(&ea, 0, sizeof(ea));
	ea.event = FCME_GPSC_DONE;
	ea.rc = res;
	ea.fcport = fcport;
	ea.sp = sp;
	qla2x00_fcport_event_handler(vha, &ea);

	sp->free(sp);
}

int qla24xx_async_gpsc(scsi_qla_host_t *vha, fc_port_t *fcport)
{
	int rval = QLA_FUNCTION_FAILED;
	struct ct_sns_req       *ct_req;
	srb_t *sp;

	if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT))
		return rval;

	sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
	if (!sp)
		goto done;

	fcport->flags |= FCF_ASYNC_SENT;
	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "gpsc";
	sp->gen1 = fcport->rscn_gen;
	sp->gen2 = fcport->login_gen;

	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	/* CT_IU preamble  */
	ct_req = qla24xx_prep_ct_fm_req(fcport->ct_desc.ct_sns, GPSC_CMD,
		GPSC_RSP_SIZE);

	/* GPSC req */
	memcpy(ct_req->req.gpsc.port_name, fcport->fabric_port_name,
		WWN_SIZE);

	sp->u.iocb_cmd.u.ctarg.req = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.req_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.rsp = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.rsp_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.req_size = GPSC_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = GPSC_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = vha->mgmt_svr_loop_id;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	sp->done = qla24xx_async_gpsc_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS)
		goto done_free_sp;

	ql_dbg(ql_dbg_disc, vha, 0x205e,
	    "Async-%s %8phC hdl=%x loopid=%x portid=%02x%02x%02x.\n",
	    sp->name, fcport->port_name, sp->handle,
	    fcport->loop_id, fcport->d_id.b.domain,
	    fcport->d_id.b.area, fcport->d_id.b.al_pa);
	return rval;

done_free_sp:
	sp->free(sp);
	fcport->flags &= ~FCF_ASYNC_SENT;
done:
	fcport->flags &= ~FCF_ASYNC_ACTIVE;
	return rval;
}

int qla24xx_post_gpnid_work(struct scsi_qla_host *vha, port_id_t *id)
{
	struct qla_work_evt *e;

	if (test_bit(UNLOADING, &vha->dpc_flags))
		return 0;

	e = qla2x00_alloc_work(vha, QLA_EVT_GPNID);
	if (!e)
		return QLA_FUNCTION_FAILED;

	e->u.gpnid.id = *id;
	return qla2x00_post_work(vha, e);
}

void qla24xx_sp_unmap(scsi_qla_host_t *vha, srb_t *sp)
{
	if (sp->u.iocb_cmd.u.ctarg.req) {
		dma_free_coherent(&vha->hw->pdev->dev,
			sizeof(struct ct_sns_pkt),
			sp->u.iocb_cmd.u.ctarg.req,
			sp->u.iocb_cmd.u.ctarg.req_dma);
		sp->u.iocb_cmd.u.ctarg.req = NULL;
	}
	if (sp->u.iocb_cmd.u.ctarg.rsp) {
		dma_free_coherent(&vha->hw->pdev->dev,
			sizeof(struct ct_sns_pkt),
			sp->u.iocb_cmd.u.ctarg.rsp,
			sp->u.iocb_cmd.u.ctarg.rsp_dma);
		sp->u.iocb_cmd.u.ctarg.rsp = NULL;
	}

	sp->free(sp);
}

void qla24xx_handle_gpnid_event(scsi_qla_host_t *vha, struct event_arg *ea)
{
	fc_port_t *fcport, *conflict, *t;
	u16 data[2];

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "%s %d port_id: %06x\n",
	    __func__, __LINE__, ea->id.b24);

	if (ea->rc) {
		/* cable is disconnected */
		list_for_each_entry_safe(fcport, t, &vha->vp_fcports, list) {
			if (fcport->d_id.b24 == ea->id.b24) {
				ql_dbg(ql_dbg_disc, vha, 0xffff,
				    "%s %d %8phC DS %d\n",
				    __func__, __LINE__,
				    fcport->port_name,
				    fcport->disc_state);
				fcport->scan_state = QLA_FCPORT_SCAN;
				switch (fcport->disc_state) {
				case DSC_DELETED:
				case DSC_DELETE_PEND:
					break;
				default:
					ql_dbg(ql_dbg_disc, vha, 0xffff,
					    "%s %d %8phC post del sess\n",
					    __func__, __LINE__,
					    fcport->port_name);
					qlt_schedule_sess_for_deletion(fcport);
					break;
				}
			}
		}
	} else {
		/* cable is connected */
		fcport = qla2x00_find_fcport_by_wwpn(vha, ea->port_name, 1);
		if (fcport) {
			list_for_each_entry_safe(conflict, t, &vha->vp_fcports,
			    list) {
				if ((conflict->d_id.b24 == ea->id.b24) &&
				    (fcport != conflict)) {
					/* 2 fcports with conflict Nport ID or
					 * an existing fcport is having nport ID
					 * conflict with new fcport.
					 */

					ql_dbg(ql_dbg_disc, vha, 0xffff,
					    "%s %d %8phC DS %d\n",
					    __func__, __LINE__,
					    conflict->port_name,
					    conflict->disc_state);
					conflict->scan_state = QLA_FCPORT_SCAN;
					switch (conflict->disc_state) {
					case DSC_DELETED:
					case DSC_DELETE_PEND:
						break;
					default:
						ql_dbg(ql_dbg_disc, vha, 0xffff,
						    "%s %d %8phC post del sess\n",
						    __func__, __LINE__,
						    conflict->port_name);
						qlt_schedule_sess_for_deletion
							(conflict);
						break;
					}
				}
			}

			fcport->rscn_gen++;
			fcport->scan_state = QLA_FCPORT_FOUND;
			fcport->flags |= FCF_FABRIC_DEVICE;
			switch (fcport->disc_state) {
			case DSC_LOGIN_COMPLETE:
				/* recheck session is still intact. */
				ql_dbg(ql_dbg_disc, vha, 0x210d,
				    "%s %d %8phC revalidate session with ADISC\n",
				    __func__, __LINE__, fcport->port_name);
				data[0] = data[1] = 0;
				qla2x00_post_async_adisc_work(vha, fcport,
				    data);
				break;
			case DSC_DELETED:
				ql_dbg(ql_dbg_disc, vha, 0x210d,
				    "%s %d %8phC login\n", __func__, __LINE__,
				    fcport->port_name);
				fcport->d_id = ea->id;
				qla24xx_fcport_handle_login(vha, fcport);
				break;
			case DSC_DELETE_PEND:
				fcport->d_id = ea->id;
				break;
			default:
				fcport->d_id = ea->id;
				break;
			}
		} else {
			list_for_each_entry_safe(conflict, t, &vha->vp_fcports,
			    list) {
				if (conflict->d_id.b24 == ea->id.b24) {
					/* 2 fcports with conflict Nport ID or
					 * an existing fcport is having nport ID
					 * conflict with new fcport.
					 */
					ql_dbg(ql_dbg_disc, vha, 0xffff,
					    "%s %d %8phC DS %d\n",
					    __func__, __LINE__,
					    conflict->port_name,
					    conflict->disc_state);

					conflict->scan_state = QLA_FCPORT_SCAN;
					switch (conflict->disc_state) {
					case DSC_DELETED:
					case DSC_DELETE_PEND:
						break;
					default:
						ql_dbg(ql_dbg_disc, vha, 0xffff,
						    "%s %d %8phC post del sess\n",
						    __func__, __LINE__,
						    conflict->port_name);
						qlt_schedule_sess_for_deletion
							(conflict);
						break;
					}
				}
			}

			/* create new fcport */
			ql_dbg(ql_dbg_disc, vha, 0x2065,
			    "%s %d %8phC post new sess\n",
			    __func__, __LINE__, ea->port_name);
			qla24xx_post_newsess_work(vha, &ea->id,
			    ea->port_name, NULL, NULL, FC4_TYPE_UNKNOWN);
		}
	}
}

static void qla2x00_async_gpnid_sp_done(void *s, int res)
{
	struct srb *sp = s;
	struct scsi_qla_host *vha = sp->vha;
	struct ct_sns_req *ct_req =
	    (struct ct_sns_req *)sp->u.iocb_cmd.u.ctarg.req;
	struct ct_sns_rsp *ct_rsp =
	    (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp;
	struct event_arg ea;
	struct qla_work_evt *e;
	unsigned long flags;

	if (res)
		ql_dbg(ql_dbg_disc, vha, 0x2066,
		    "Async done-%s fail res %x rscn gen %d ID %3phC. %8phC\n",
		    sp->name, res, sp->gen1, ct_req->req.port_id.port_id,
		    ct_rsp->rsp.gpn_id.port_name);
	else
		ql_dbg(ql_dbg_disc, vha, 0x2066,
		    "Async done-%s good rscn gen %d ID %3phC. %8phC\n",
		    sp->name, sp->gen1, ct_req->req.port_id.port_id,
		    ct_rsp->rsp.gpn_id.port_name);

	memset(&ea, 0, sizeof(ea));
	memcpy(ea.port_name, ct_rsp->rsp.gpn_id.port_name, WWN_SIZE);
	ea.sp = sp;
	ea.id.b.domain = ct_req->req.port_id.port_id[0];
	ea.id.b.area = ct_req->req.port_id.port_id[1];
	ea.id.b.al_pa = ct_req->req.port_id.port_id[2];
	ea.rc = res;
	ea.event = FCME_GPNID_DONE;

	spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
	list_del(&sp->elem);
	spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);

	if (res) {
		if (res == QLA_FUNCTION_TIMEOUT) {
			qla24xx_post_gpnid_work(sp->vha, &ea.id);
			sp->free(sp);
			return;
		}
	} else if (sp->gen1) {
		/* There was another RSCN for this Nport ID */
		qla24xx_post_gpnid_work(sp->vha, &ea.id);
		sp->free(sp);
		return;
	}

	qla2x00_fcport_event_handler(vha, &ea);

	e = qla2x00_alloc_work(vha, QLA_EVT_UNMAP);
	if (!e) {
		/* please ignore kernel warning. otherwise, we have mem leak. */
		if (sp->u.iocb_cmd.u.ctarg.req) {
			dma_free_coherent(&vha->hw->pdev->dev,
				sizeof(struct ct_sns_pkt),
				sp->u.iocb_cmd.u.ctarg.req,
				sp->u.iocb_cmd.u.ctarg.req_dma);
			sp->u.iocb_cmd.u.ctarg.req = NULL;
		}
		if (sp->u.iocb_cmd.u.ctarg.rsp) {
			dma_free_coherent(&vha->hw->pdev->dev,
				sizeof(struct ct_sns_pkt),
				sp->u.iocb_cmd.u.ctarg.rsp,
				sp->u.iocb_cmd.u.ctarg.rsp_dma);
			sp->u.iocb_cmd.u.ctarg.rsp = NULL;
		}

		sp->free(sp);
		return;
	}

	e->u.iosb.sp = sp;
	qla2x00_post_work(vha, e);
}

/* Get WWPN with Nport ID. */
int qla24xx_async_gpnid(scsi_qla_host_t *vha, port_id_t *id)
{
	int rval = QLA_FUNCTION_FAILED;
	struct ct_sns_req       *ct_req;
	srb_t *sp, *tsp;
	struct ct_sns_pkt *ct_sns;
	unsigned long flags;

	if (!vha->flags.online)
		goto done;

	sp = qla2x00_get_sp(vha, NULL, GFP_KERNEL);
	if (!sp)
		goto done;

	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "gpnid";
	sp->u.iocb_cmd.u.ctarg.id = *id;
	sp->gen1 = 0;
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
	list_for_each_entry(tsp, &vha->gpnid_list, elem) {
		if (tsp->u.iocb_cmd.u.ctarg.id.b24 == id->b24) {
			tsp->gen1++;
			spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
			sp->free(sp);
			goto done;
		}
	}
	list_add_tail(&sp->elem, &vha->gpnid_list);
	spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);

	sp->u.iocb_cmd.u.ctarg.req = dma_alloc_coherent(&vha->hw->pdev->dev,
		sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.req_dma,
		GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.req) {
		ql_log(ql_log_warn, vha, 0xd041,
		    "Failed to allocate ct_sns request.\n");
		goto done_free_sp;
	}

	sp->u.iocb_cmd.u.ctarg.rsp = dma_alloc_coherent(&vha->hw->pdev->dev,
		sizeof(struct ct_sns_pkt), &sp->u.iocb_cmd.u.ctarg.rsp_dma,
		GFP_KERNEL);
	if (!sp->u.iocb_cmd.u.ctarg.rsp) {
		ql_log(ql_log_warn, vha, 0xd042,
		    "Failed to allocate ct_sns request.\n");
		goto done_free_sp;
	}

	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.rsp;
	memset(ct_sns, 0, sizeof(*ct_sns));

	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.req;
	/* CT_IU preamble  */
	ct_req = qla2x00_prep_ct_req(ct_sns, GPN_ID_CMD, GPN_ID_RSP_SIZE);

	/* GPN_ID req */
	ct_req->req.port_id.port_id[0] = id->b.domain;
	ct_req->req.port_id.port_id[1] = id->b.area;
	ct_req->req.port_id.port_id[2] = id->b.al_pa;

	sp->u.iocb_cmd.u.ctarg.req_size = GPN_ID_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = GPN_ID_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	sp->done = qla2x00_async_gpnid_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS)
		goto done_free_sp;

	ql_dbg(ql_dbg_disc, vha, 0x2067,
	    "Async-%s hdl=%x ID %3phC.\n", sp->name,
	    sp->handle, ct_req->req.port_id.port_id);
	return rval;

done_free_sp:
	if (sp->u.iocb_cmd.u.ctarg.req) {
		dma_free_coherent(&vha->hw->pdev->dev,
			sizeof(struct ct_sns_pkt),
			sp->u.iocb_cmd.u.ctarg.req,
			sp->u.iocb_cmd.u.ctarg.req_dma);
		sp->u.iocb_cmd.u.ctarg.req = NULL;
	}
	if (sp->u.iocb_cmd.u.ctarg.rsp) {
		dma_free_coherent(&vha->hw->pdev->dev,
			sizeof(struct ct_sns_pkt),
			sp->u.iocb_cmd.u.ctarg.rsp,
			sp->u.iocb_cmd.u.ctarg.rsp_dma);
		sp->u.iocb_cmd.u.ctarg.rsp = NULL;
	}

	sp->free(sp);
done:
	return rval;
}

void qla24xx_handle_gffid_event(scsi_qla_host_t *vha, struct event_arg *ea)
{
       fc_port_t *fcport = ea->fcport;

       qla24xx_post_gnl_work(vha, fcport);
}

void qla24xx_async_gffid_sp_done(void *s, int res)
{
       struct srb *sp = s;
       struct scsi_qla_host *vha = sp->vha;
       fc_port_t *fcport = sp->fcport;
       struct ct_sns_rsp *ct_rsp;
       struct event_arg ea;

       ql_dbg(ql_dbg_disc, vha, 0x2133,
	   "Async done-%s res %x ID %x. %8phC\n",
	   sp->name, res, fcport->d_id.b24, fcport->port_name);

       fcport->flags &= ~FCF_ASYNC_SENT;
       ct_rsp = &fcport->ct_desc.ct_sns->p.rsp;
       /*
	* FC-GS-7, 5.2.3.12 FC-4 Features - format
	* The format of the FC-4 Features object, as defined by the FC-4,
	* Shall be an array of 4-bit values, one for each type code value
	*/
       if (!res) {
	       if (ct_rsp->rsp.gff_id.fc4_features[GFF_FCP_SCSI_OFFSET] & 0xf) {
		       /* w1 b00:03 */
		       fcport->fc4_type =
			   ct_rsp->rsp.gff_id.fc4_features[GFF_FCP_SCSI_OFFSET];
		       fcport->fc4_type &= 0xf;
	       }

	       if (ct_rsp->rsp.gff_id.fc4_features[GFF_NVME_OFFSET] & 0xf) {
		       /* w5 [00:03]/28h */
		       fcport->fc4f_nvme =
			   ct_rsp->rsp.gff_id.fc4_features[GFF_NVME_OFFSET];
		       fcport->fc4f_nvme &= 0xf;
	       }
       }

       memset(&ea, 0, sizeof(ea));
       ea.sp = sp;
       ea.fcport = sp->fcport;
       ea.rc = res;
       ea.event = FCME_GFFID_DONE;

       qla2x00_fcport_event_handler(vha, &ea);
       sp->free(sp);
}

/* Get FC4 Feature with Nport ID. */
int qla24xx_async_gffid(scsi_qla_host_t *vha, fc_port_t *fcport)
{
	int rval = QLA_FUNCTION_FAILED;
	struct ct_sns_req       *ct_req;
	srb_t *sp;

	if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT))
		return rval;

	sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
	if (!sp)
		return rval;

	fcport->flags |= FCF_ASYNC_SENT;
	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "gffid";
	sp->gen1 = fcport->rscn_gen;
	sp->gen2 = fcport->login_gen;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	/* CT_IU preamble  */
	ct_req = qla2x00_prep_ct_req(fcport->ct_desc.ct_sns, GFF_ID_CMD,
	    GFF_ID_RSP_SIZE);

	ct_req->req.gff_id.port_id[0] = fcport->d_id.b.domain;
	ct_req->req.gff_id.port_id[1] = fcport->d_id.b.area;
	ct_req->req.gff_id.port_id[2] = fcport->d_id.b.al_pa;

	sp->u.iocb_cmd.u.ctarg.req = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.req_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.rsp = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.rsp_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.req_size = GFF_ID_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = GFF_ID_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->done = qla24xx_async_gffid_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS)
		goto done_free_sp;

	ql_dbg(ql_dbg_disc, vha, 0x2132,
	    "Async-%s hdl=%x  %8phC.\n", sp->name,
	    sp->handle, fcport->port_name);

	return rval;
done_free_sp:
	sp->free(sp);
	fcport->flags &= ~FCF_ASYNC_SENT;
	return rval;
}

/* GPN_FT + GNN_FT*/
static int qla2x00_is_a_vp(scsi_qla_host_t *vha, u64 wwn)
{
	struct qla_hw_data *ha = vha->hw;
	scsi_qla_host_t *vp;
	unsigned long flags;
	u64 twwn;
	int rc = 0;

	if (!ha->num_vhosts)
		return 0;

	spin_lock_irqsave(&ha->vport_slock, flags);
	list_for_each_entry(vp, &ha->vp_list, list) {
		twwn = wwn_to_u64(vp->port_name);
		if (wwn == twwn) {
			rc = 1;
			break;
		}
	}
	spin_unlock_irqrestore(&ha->vport_slock, flags);

	return rc;
}

void qla24xx_async_gnnft_done(scsi_qla_host_t *vha, srb_t *sp)
{
	fc_port_t *fcport;
	u32 i, rc;
	bool found;
	struct fab_scan_rp *rp;
	unsigned long flags;

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "%s enter\n", __func__);

	if (sp->gen1 != vha->hw->base_qpair->chip_reset) {
		ql_dbg(ql_dbg_disc, vha, 0xffff,
		    "%s scan stop due to chip reset %x/%x\n",
		    sp->name, sp->gen1, vha->hw->base_qpair->chip_reset);
		goto out;
	}

	rc = sp->rc;
	if (rc) {
		vha->scan.scan_retry++;
		if (vha->scan.scan_retry < MAX_SCAN_RETRIES) {
			set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
			set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
		} else {
			ql_dbg(ql_dbg_disc, vha, 0xffff,
			    "Fabric scan failed on all retries.\n");
		}
		goto out;
	}
	vha->scan.scan_retry = 0;

	list_for_each_entry(fcport, &vha->vp_fcports, list)
		fcport->scan_state = QLA_FCPORT_SCAN;

	for (i = 0; i < vha->hw->max_fibre_devices; i++) {
		u64 wwn;

		rp = &vha->scan.l[i];
		found = false;

		wwn = wwn_to_u64(rp->port_name);
		if (wwn == 0)
			continue;

		if (!memcmp(rp->port_name, vha->port_name, WWN_SIZE))
			continue;

		/* Bypass reserved domain fields. */
		if ((rp->id.b.domain & 0xf0) == 0xf0)
			continue;

		/* Bypass virtual ports of the same host. */
		if (qla2x00_is_a_vp(vha, wwn))
			continue;

		list_for_each_entry(fcport, &vha->vp_fcports, list) {
			if (memcmp(rp->port_name, fcport->port_name, WWN_SIZE))
				continue;
			fcport->scan_state = QLA_FCPORT_FOUND;
			fcport->d_id.b24 = rp->id.b24;
			found = true;
			/*
			 * If device was not a fabric device before.
			 */
			if ((fcport->flags & FCF_FABRIC_DEVICE) == 0) {
				qla2x00_clear_loop_id(fcport);
				fcport->flags |= FCF_FABRIC_DEVICE;
			}
			break;
		}

		if (!found) {
			ql_dbg(ql_dbg_disc, vha, 0xffff,
			    "%s %d %8phC post new sess\n",
			    __func__, __LINE__, rp->port_name);
			qla24xx_post_newsess_work(vha, &rp->id, rp->port_name,
			    rp->node_name, NULL, rp->fc4type);
		}
	}

	/*
	 * Logout all previous fabric dev marked lost, except FCP2 devices.
	 */
	list_for_each_entry(fcport, &vha->vp_fcports, list) {
		if ((fcport->flags & FCF_FABRIC_DEVICE) == 0)
			continue;

		if (fcport->scan_state != QLA_FCPORT_FOUND) {
			if ((qla_dual_mode_enabled(vha) ||
				qla_ini_mode_enabled(vha)) &&
			    atomic_read(&fcport->state) == FCS_ONLINE) {
				qla2x00_mark_device_lost(vha, fcport,
				    ql2xplogiabsentdevice, 0);

				if (fcport->loop_id != FC_NO_LOOP_ID &&
				    (fcport->flags & FCF_FCP2_DEVICE) == 0) {
					ql_dbg(ql_dbg_disc, vha, 0x20f0,
					    "%s %d %8phC post del sess\n",
					    __func__, __LINE__,
					    fcport->port_name);

					qlt_schedule_sess_for_deletion(fcport);
					continue;
				}
			}
		} else
			qla24xx_fcport_handle_login(vha, fcport);
	}

out:
	qla24xx_sp_unmap(vha, sp);
	spin_lock_irqsave(&vha->work_lock, flags);
	vha->scan.scan_flags &= ~SF_SCANNING;
	spin_unlock_irqrestore(&vha->work_lock, flags);
}

static void qla2x00_find_free_fcp_nvme_slot(struct scsi_qla_host *vha,
	struct srb *sp)
{
	struct qla_hw_data *ha = vha->hw;
	int num_fibre_dev = ha->max_fibre_devices;
	struct ct_sns_req *ct_req =
		(struct ct_sns_req *)sp->u.iocb_cmd.u.ctarg.req;
	struct ct_sns_gpnft_rsp *ct_rsp =
		(struct ct_sns_gpnft_rsp *)sp->u.iocb_cmd.u.ctarg.rsp;
	struct ct_sns_gpn_ft_data *d;
	struct fab_scan_rp *rp;
	u16 cmd = be16_to_cpu(ct_req->command);
	u8 fc4_type = sp->gen2;
	int i, j, k;
	port_id_t id;
	u8 found;
	u64 wwn;

	j = 0;
	for (i = 0; i < num_fibre_dev; i++) {
		d  = &ct_rsp->entries[i];

		id.b.rsvd_1 = 0;
		id.b.domain = d->port_id[0];
		id.b.area   = d->port_id[1];
		id.b.al_pa  = d->port_id[2];
		wwn = wwn_to_u64(d->port_name);

		if (id.b24 == 0 || wwn == 0)
			continue;

		if (fc4_type == FC4_TYPE_FCP_SCSI) {
			if (cmd == GPN_FT_CMD) {
				rp = &vha->scan.l[j];
				rp->id = id;
				memcpy(rp->port_name, d->port_name, 8);
				j++;
				rp->fc4type = FS_FC4TYPE_FCP;
			} else {
				for (k = 0; k < num_fibre_dev; k++) {
					rp = &vha->scan.l[k];
					if (id.b24 == rp->id.b24) {
						memcpy(rp->node_name,
						    d->port_name, 8);
						break;
					}
				}
			}
		} else {
			/* Search if the fibre device supports FC4_TYPE_NVME */
			if (cmd == GPN_FT_CMD) {
				found = 0;

				for (k = 0; k < num_fibre_dev; k++) {
					rp = &vha->scan.l[k];
					if (!memcmp(rp->port_name,
					    d->port_name, 8)) {
						/*
						 * Supports FC-NVMe & FCP
						 */
						rp->fc4type |= FS_FC4TYPE_NVME;
						found = 1;
						break;
					}
				}

				/* We found new FC-NVMe only port */
				if (!found) {
					for (k = 0; k < num_fibre_dev; k++) {
						rp = &vha->scan.l[k];
						if (wwn_to_u64(rp->port_name)) {
							continue;
						} else {
							rp->id = id;
							memcpy(rp->port_name,
							    d->port_name, 8);
							rp->fc4type =
							    FS_FC4TYPE_NVME;
							break;
						}
					}
				}
			} else {
				for (k = 0; k < num_fibre_dev; k++) {
					rp = &vha->scan.l[k];
					if (id.b24 == rp->id.b24) {
						memcpy(rp->node_name,
						    d->port_name, 8);
						break;
					}
				}
			}
		}
	}
}

static void qla2x00_async_gpnft_gnnft_sp_done(void *s, int res)
{
	struct srb *sp = s;
	struct scsi_qla_host *vha = sp->vha;
	struct qla_work_evt *e;
	struct ct_sns_req *ct_req =
		(struct ct_sns_req *)sp->u.iocb_cmd.u.ctarg.req;
	u16 cmd = be16_to_cpu(ct_req->command);
	u8 fc4_type = sp->gen2;
	unsigned long flags;

	/* gen2 field is holding the fc4type */
	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async done-%s res %x FC4Type %x\n",
	    sp->name, res, sp->gen2);

	if (res) {
		unsigned long flags;

		sp->free(sp);
		spin_lock_irqsave(&vha->work_lock, flags);
		vha->scan.scan_flags &= ~SF_SCANNING;
		vha->scan.scan_retry++;
		spin_unlock_irqrestore(&vha->work_lock, flags);

		if (vha->scan.scan_retry < MAX_SCAN_RETRIES) {
			set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
			set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
			qla2xxx_wake_dpc(vha);
		} else {
			ql_dbg(ql_dbg_disc, sp->vha, 0xffff,
			    "Async done-%s rescan failed on all retries\n",
			    sp->name);
		}
		return;
	}

	if (!res)
		qla2x00_find_free_fcp_nvme_slot(vha, sp);

	if ((fc4_type == FC4_TYPE_FCP_SCSI) && vha->flags.nvme_enabled &&
	    cmd == GNN_FT_CMD) {
		del_timer(&sp->u.iocb_cmd.timer);
		spin_lock_irqsave(&vha->work_lock, flags);
		vha->scan.scan_flags &= ~SF_SCANNING;
		spin_unlock_irqrestore(&vha->work_lock, flags);

		e = qla2x00_alloc_work(vha, QLA_EVT_GPNFT);
		if (!e) {
			/*
			 * please ignore kernel warning. Otherwise,
			 * we have mem leak.
			 */
			if (sp->u.iocb_cmd.u.ctarg.req) {
				dma_free_coherent(&vha->hw->pdev->dev,
				    sizeof(struct ct_sns_pkt),
				    sp->u.iocb_cmd.u.ctarg.req,
				    sp->u.iocb_cmd.u.ctarg.req_dma);
				sp->u.iocb_cmd.u.ctarg.req = NULL;
			}
			if (sp->u.iocb_cmd.u.ctarg.rsp) {
				dma_free_coherent(&vha->hw->pdev->dev,
				    sizeof(struct ct_sns_pkt),
				    sp->u.iocb_cmd.u.ctarg.rsp,
				    sp->u.iocb_cmd.u.ctarg.rsp_dma);
				sp->u.iocb_cmd.u.ctarg.rsp = NULL;
			}

			ql_dbg(ql_dbg_disc, vha, 0xffff,
			    "Async done-%s unable to alloc work element\n",
			    sp->name);
			sp->free(sp);
			set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
			set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
			return;
		}
		e->u.gpnft.fc4_type = FC4_TYPE_NVME;
		sp->rc = res;
		e->u.gpnft.sp = sp;

		qla2x00_post_work(vha, e);
		return;
	}

	if (cmd == GPN_FT_CMD)
		e = qla2x00_alloc_work(vha, QLA_EVT_GPNFT_DONE);
	else
		e = qla2x00_alloc_work(vha, QLA_EVT_GNNFT_DONE);
	if (!e) {
		/* please ignore kernel warning. Otherwise, we have mem leak. */
		if (sp->u.iocb_cmd.u.ctarg.req) {
			dma_free_coherent(&vha->hw->pdev->dev,
			    sizeof(struct ct_sns_pkt),
			    sp->u.iocb_cmd.u.ctarg.req,
			    sp->u.iocb_cmd.u.ctarg.req_dma);
			sp->u.iocb_cmd.u.ctarg.req = NULL;
		}
		if (sp->u.iocb_cmd.u.ctarg.rsp) {
			dma_free_coherent(&vha->hw->pdev->dev,
			    sizeof(struct ct_sns_pkt),
			    sp->u.iocb_cmd.u.ctarg.rsp,
			    sp->u.iocb_cmd.u.ctarg.rsp_dma);
			sp->u.iocb_cmd.u.ctarg.rsp = NULL;
		}

		ql_dbg(ql_dbg_disc, vha, 0xffff,
		    "Async done-%s unable to alloc work element\n",
		    sp->name);
		sp->free(sp);
		set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
		set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
		return;
	}

	sp->rc = res;
	e->u.iosb.sp = sp;

	qla2x00_post_work(vha, e);
}

/*
 * Get WWNN list for fc4_type
 *
 * It is assumed the same SRB is re-used from GPNFT to avoid
 * mem free & re-alloc
 */
static int qla24xx_async_gnnft(scsi_qla_host_t *vha, struct srb *sp,
    u8 fc4_type)
{
	int rval = QLA_FUNCTION_FAILED;
	struct ct_sns_req *ct_req;
	struct ct_sns_pkt *ct_sns;
	unsigned long flags;

	if (!vha->flags.online) {
		spin_lock_irqsave(&vha->work_lock, flags);
		vha->scan.scan_flags &= ~SF_SCANNING;
		spin_unlock_irqrestore(&vha->work_lock, flags);
		goto done_free_sp;
	}

	if (!sp->u.iocb_cmd.u.ctarg.req || !sp->u.iocb_cmd.u.ctarg.rsp) {
		ql_log(ql_log_warn, vha, 0xffff,
		    "%s: req %p rsp %p are not setup\n",
		    __func__, sp->u.iocb_cmd.u.ctarg.req,
		    sp->u.iocb_cmd.u.ctarg.rsp);
		spin_lock_irqsave(&vha->work_lock, flags);
		vha->scan.scan_flags &= ~SF_SCANNING;
		spin_unlock_irqrestore(&vha->work_lock, flags);
		WARN_ON(1);
		goto done_free_sp;
	}

	ql_dbg(ql_dbg_disc, vha, 0xfffff,
	    "%s: FC4Type %x, CT-PASSTRHU %s command ctarg rsp size %d, ctarg req size %d\n",
	    __func__, fc4_type, sp->name, sp->u.iocb_cmd.u.ctarg.rsp_size,
	     sp->u.iocb_cmd.u.ctarg.req_size);

	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "gnnft";
	sp->gen1 = vha->hw->base_qpair->chip_reset;
	sp->gen2 = fc4_type;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	memset(sp->u.iocb_cmd.u.ctarg.rsp, 0, sp->u.iocb_cmd.u.ctarg.rsp_size);
	memset(sp->u.iocb_cmd.u.ctarg.req, 0, sp->u.iocb_cmd.u.ctarg.req_size);

	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.req;
	/* CT_IU preamble  */
	ct_req = qla2x00_prep_ct_req(ct_sns, GNN_FT_CMD,
	    sp->u.iocb_cmd.u.ctarg.rsp_size);

	/* GPN_FT req */
	ct_req->req.gpn_ft.port_type = fc4_type;

	sp->u.iocb_cmd.u.ctarg.req_size = GNN_FT_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->done = qla2x00_async_gpnft_gnnft_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS)
		goto done_free_sp;

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async-%s hdl=%x FC4Type %x.\n", sp->name,
	    sp->handle, ct_req->req.gpn_ft.port_type);
	return rval;

done_free_sp:
	if (sp->u.iocb_cmd.u.ctarg.req) {
		dma_free_coherent(&vha->hw->pdev->dev,
		    sizeof(struct ct_sns_pkt),
		    sp->u.iocb_cmd.u.ctarg.req,
		    sp->u.iocb_cmd.u.ctarg.req_dma);
		sp->u.iocb_cmd.u.ctarg.req = NULL;
	}
	if (sp->u.iocb_cmd.u.ctarg.rsp) {
		dma_free_coherent(&vha->hw->pdev->dev,
		    sizeof(struct ct_sns_pkt),
		    sp->u.iocb_cmd.u.ctarg.rsp,
		    sp->u.iocb_cmd.u.ctarg.rsp_dma);
		sp->u.iocb_cmd.u.ctarg.rsp = NULL;
	}

	sp->free(sp);

	return rval;
} /* GNNFT */

void qla24xx_async_gpnft_done(scsi_qla_host_t *vha, srb_t *sp)
{
	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "%s enter\n", __func__);
	del_timer(&sp->u.iocb_cmd.timer);
	qla24xx_async_gnnft(vha, sp, sp->gen2);
}

/* Get WWPN list for certain fc4_type */
int qla24xx_async_gpnft(scsi_qla_host_t *vha, u8 fc4_type, srb_t *sp)
{
	int rval = QLA_FUNCTION_FAILED;
	struct ct_sns_req       *ct_req;
	struct ct_sns_pkt *ct_sns;
	u32 rspsz;
	unsigned long flags;

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "%s enter\n", __func__);

	if (!vha->flags.online)
		return rval;

	spin_lock_irqsave(&vha->work_lock, flags);
	if (vha->scan.scan_flags & SF_SCANNING) {
		spin_unlock_irqrestore(&vha->work_lock, flags);
		ql_dbg(ql_dbg_disc, vha, 0xffff, "scan active\n");
		return rval;
	}
	vha->scan.scan_flags |= SF_SCANNING;
	spin_unlock_irqrestore(&vha->work_lock, flags);

	if (fc4_type == FC4_TYPE_FCP_SCSI) {
		ql_dbg(ql_dbg_disc, vha, 0xffff,
		    "%s: Performing FCP Scan\n", __func__);

		if (sp)
			sp->free(sp); /* should not happen */

		sp = qla2x00_get_sp(vha, NULL, GFP_KERNEL);
		if (!sp) {
			spin_lock_irqsave(&vha->work_lock, flags);
			vha->scan.scan_flags &= ~SF_SCANNING;
			spin_unlock_irqrestore(&vha->work_lock, flags);
			return rval;
		}

		sp->u.iocb_cmd.u.ctarg.req = dma_zalloc_coherent(
			&vha->hw->pdev->dev, sizeof(struct ct_sns_pkt),
			&sp->u.iocb_cmd.u.ctarg.req_dma, GFP_KERNEL);
		if (!sp->u.iocb_cmd.u.ctarg.req) {
			ql_log(ql_log_warn, vha, 0xffff,
			    "Failed to allocate ct_sns request.\n");
			spin_lock_irqsave(&vha->work_lock, flags);
			vha->scan.scan_flags &= ~SF_SCANNING;
			spin_unlock_irqrestore(&vha->work_lock, flags);
			goto done_free_sp;
		}
		sp->u.iocb_cmd.u.ctarg.req_size = GPN_FT_REQ_SIZE;

		rspsz = sizeof(struct ct_sns_gpnft_rsp) +
			((vha->hw->max_fibre_devices - 1) *
			    sizeof(struct ct_sns_gpn_ft_data));

		sp->u.iocb_cmd.u.ctarg.rsp = dma_zalloc_coherent(
			&vha->hw->pdev->dev, rspsz,
			&sp->u.iocb_cmd.u.ctarg.rsp_dma, GFP_KERNEL);
		if (!sp->u.iocb_cmd.u.ctarg.rsp) {
			ql_log(ql_log_warn, vha, 0xffff,
			    "Failed to allocate ct_sns request.\n");
			spin_lock_irqsave(&vha->work_lock, flags);
			vha->scan.scan_flags &= ~SF_SCANNING;
			spin_unlock_irqrestore(&vha->work_lock, flags);
			goto done_free_sp;
		}
		sp->u.iocb_cmd.u.ctarg.rsp_size = rspsz;

		ql_dbg(ql_dbg_disc, vha, 0xffff,
		    "%s scan list size %d\n", __func__, vha->scan.size);

		memset(vha->scan.l, 0, vha->scan.size);
	} else if (!sp) {
		ql_dbg(ql_dbg_disc, vha, 0xffff,
		    "NVME scan did not provide SP\n");
		return rval;
	}

	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "gpnft";
	sp->gen1 = vha->hw->base_qpair->chip_reset;
	sp->gen2 = fc4_type;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	rspsz = sizeof(struct ct_sns_gpnft_rsp) +
		((vha->hw->max_fibre_devices - 1) *
		    sizeof(struct ct_sns_gpn_ft_data));

	ct_sns = (struct ct_sns_pkt *)sp->u.iocb_cmd.u.ctarg.req;
	/* CT_IU preamble  */
	ct_req = qla2x00_prep_ct_req(ct_sns, GPN_FT_CMD, rspsz);

	/* GPN_FT req */
	ct_req->req.gpn_ft.port_type = fc4_type;

	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->done = qla2x00_async_gpnft_gnnft_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS) {
		spin_lock_irqsave(&vha->work_lock, flags);
		vha->scan.scan_flags &= ~SF_SCANNING;
		spin_unlock_irqrestore(&vha->work_lock, flags);
		goto done_free_sp;
	}

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async-%s hdl=%x FC4Type %x.\n", sp->name,
	    sp->handle, ct_req->req.gpn_ft.port_type);
	return rval;

done_free_sp:
	if (sp->u.iocb_cmd.u.ctarg.req) {
		dma_free_coherent(&vha->hw->pdev->dev,
		    sizeof(struct ct_sns_pkt),
		    sp->u.iocb_cmd.u.ctarg.req,
		    sp->u.iocb_cmd.u.ctarg.req_dma);
		sp->u.iocb_cmd.u.ctarg.req = NULL;
	}
	if (sp->u.iocb_cmd.u.ctarg.rsp) {
		dma_free_coherent(&vha->hw->pdev->dev,
		    sizeof(struct ct_sns_pkt),
		    sp->u.iocb_cmd.u.ctarg.rsp,
		    sp->u.iocb_cmd.u.ctarg.rsp_dma);
		sp->u.iocb_cmd.u.ctarg.rsp = NULL;
	}

	sp->free(sp);

	return rval;
}

void qla_scan_work_fn(struct work_struct *work)
{
	struct fab_scan *s = container_of(to_delayed_work(work),
	    struct fab_scan, scan_work);
	struct scsi_qla_host *vha = container_of(s, struct scsi_qla_host,
	    scan);
	unsigned long flags;

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "%s: schedule loop resync\n", __func__);
	set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
	set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
	qla2xxx_wake_dpc(vha);
	spin_lock_irqsave(&vha->work_lock, flags);
	vha->scan.scan_flags &= ~SF_QUEUED;
	spin_unlock_irqrestore(&vha->work_lock, flags);
}

/* GNN_ID */
void qla24xx_handle_gnnid_event(scsi_qla_host_t *vha, struct event_arg *ea)
{
	qla24xx_post_gnl_work(vha, ea->fcport);
}

static void qla2x00_async_gnnid_sp_done(void *s, int res)
{
	struct srb *sp = s;
	struct scsi_qla_host *vha = sp->vha;
	fc_port_t *fcport = sp->fcport;
	u8 *node_name = fcport->ct_desc.ct_sns->p.rsp.rsp.gnn_id.node_name;
	struct event_arg ea;
	u64 wwnn;

	fcport->flags &= ~FCF_ASYNC_SENT;
	wwnn = wwn_to_u64(node_name);
	if (wwnn)
		memcpy(fcport->node_name, node_name, WWN_SIZE);

	memset(&ea, 0, sizeof(ea));
	ea.fcport = fcport;
	ea.sp = sp;
	ea.rc = res;
	ea.event = FCME_GNNID_DONE;

	ql_dbg(ql_dbg_disc, vha, 0x204f,
	    "Async done-%s res %x, WWPN %8phC %8phC\n",
	    sp->name, res, fcport->port_name, fcport->node_name);

	qla2x00_fcport_event_handler(vha, &ea);

	sp->free(sp);
}

int qla24xx_async_gnnid(scsi_qla_host_t *vha, fc_port_t *fcport)
{
	int rval = QLA_FUNCTION_FAILED;
	struct ct_sns_req       *ct_req;
	srb_t *sp;

	if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT))
		return rval;

	fcport->disc_state = DSC_GNN_ID;
	sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
	if (!sp)
		goto done;

	fcport->flags |= FCF_ASYNC_SENT;
	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "gnnid";
	sp->gen1 = fcport->rscn_gen;
	sp->gen2 = fcport->login_gen;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	/* CT_IU preamble  */
	ct_req = qla2x00_prep_ct_req(fcport->ct_desc.ct_sns, GNN_ID_CMD,
	    GNN_ID_RSP_SIZE);

	/* GNN_ID req */
	ct_req->req.port_id.port_id[0] = fcport->d_id.b.domain;
	ct_req->req.port_id.port_id[1] = fcport->d_id.b.area;
	ct_req->req.port_id.port_id[2] = fcport->d_id.b.al_pa;


	/* req & rsp use the same buffer */
	sp->u.iocb_cmd.u.ctarg.req = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.req_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.rsp = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.rsp_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.req_size = GNN_ID_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = GNN_ID_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->done = qla2x00_async_gnnid_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS)
		goto done_free_sp;
	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async-%s - %8phC hdl=%x loopid=%x portid %06x.\n",
	    sp->name, fcport->port_name,
	    sp->handle, fcport->loop_id, fcport->d_id.b24);
	return rval;

done_free_sp:
	sp->free(sp);
	fcport->flags &= ~FCF_ASYNC_SENT;
done:
	return rval;
}

int qla24xx_post_gnnid_work(struct scsi_qla_host *vha, fc_port_t *fcport)
{
	struct qla_work_evt *e;
	int ls;

	ls = atomic_read(&vha->loop_state);
	if (((ls != LOOP_READY) && (ls != LOOP_UP)) ||
		test_bit(UNLOADING, &vha->dpc_flags))
		return 0;

	e = qla2x00_alloc_work(vha, QLA_EVT_GNNID);
	if (!e)
		return QLA_FUNCTION_FAILED;

	e->u.fcport.fcport = fcport;
	return qla2x00_post_work(vha, e);
}

/* GPFN_ID */
void qla24xx_handle_gfpnid_event(scsi_qla_host_t *vha, struct event_arg *ea)
{
	fc_port_t *fcport = ea->fcport;

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "%s %8phC DS %d LS %d rc %d login %d|%d rscn %d|%d fcpcnt %d\n",
	    __func__, fcport->port_name, fcport->disc_state,
	    fcport->fw_login_state, ea->rc, fcport->login_gen, ea->sp->gen2,
	    fcport->rscn_gen, ea->sp->gen1, vha->fcport_count);

	if (fcport->disc_state == DSC_DELETE_PEND)
		return;

	if (ea->sp->gen2 != fcport->login_gen) {
		/* target side must have changed it. */
		ql_dbg(ql_dbg_disc, vha, 0x20d3,
		    "%s %8phC generation changed\n",
		    __func__, fcport->port_name);
		return;
	} else if (ea->sp->gen1 != fcport->rscn_gen) {
		ql_dbg(ql_dbg_disc, vha, 0x20d4, "%s %d %8phC post gidpn\n",
		    __func__, __LINE__, fcport->port_name);
		qla24xx_post_gidpn_work(vha, fcport);
		return;
	}

	qla24xx_post_gpsc_work(vha, fcport);
}

static void qla2x00_async_gfpnid_sp_done(void *s, int res)
{
	struct srb *sp = s;
	struct scsi_qla_host *vha = sp->vha;
	fc_port_t *fcport = sp->fcport;
	u8 *fpn = fcport->ct_desc.ct_sns->p.rsp.rsp.gfpn_id.port_name;
	struct event_arg ea;
	u64 wwn;

	fcport->flags &= ~FCF_ASYNC_SENT;
	wwn = wwn_to_u64(fpn);
	if (wwn)
		memcpy(fcport->fabric_port_name, fpn, WWN_SIZE);

	memset(&ea, 0, sizeof(ea));
	ea.fcport = fcport;
	ea.sp = sp;
	ea.rc = res;
	ea.event = FCME_GFPNID_DONE;

	ql_dbg(ql_dbg_disc, vha, 0x204f,
	    "Async done-%s res %x, WWPN %8phC %8phC\n",
	    sp->name, res, fcport->port_name, fcport->fabric_port_name);

	qla2x00_fcport_event_handler(vha, &ea);

	sp->free(sp);
}

int qla24xx_async_gfpnid(scsi_qla_host_t *vha, fc_port_t *fcport)
{
	int rval = QLA_FUNCTION_FAILED;
	struct ct_sns_req       *ct_req;
	srb_t *sp;

	if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT))
		return rval;

	fcport->disc_state = DSC_GFPN_ID;
	sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
	if (!sp)
		goto done;

	fcport->flags |= FCF_ASYNC_SENT;
	sp->type = SRB_CT_PTHRU_CMD;
	sp->name = "gfpnid";
	sp->gen1 = fcport->rscn_gen;
	sp->gen2 = fcport->login_gen;

	sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
	qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

	/* CT_IU preamble  */
	ct_req = qla2x00_prep_ct_req(fcport->ct_desc.ct_sns, GFPN_ID_CMD,
	    GFPN_ID_RSP_SIZE);

	/* GFPN_ID req */
	ct_req->req.port_id.port_id[0] = fcport->d_id.b.domain;
	ct_req->req.port_id.port_id[1] = fcport->d_id.b.area;
	ct_req->req.port_id.port_id[2] = fcport->d_id.b.al_pa;


	/* req & rsp use the same buffer */
	sp->u.iocb_cmd.u.ctarg.req = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.req_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.rsp = fcport->ct_desc.ct_sns;
	sp->u.iocb_cmd.u.ctarg.rsp_dma = fcport->ct_desc.ct_sns_dma;
	sp->u.iocb_cmd.u.ctarg.req_size = GFPN_ID_REQ_SIZE;
	sp->u.iocb_cmd.u.ctarg.rsp_size = GFPN_ID_RSP_SIZE;
	sp->u.iocb_cmd.u.ctarg.nport_handle = NPH_SNS;

	sp->done = qla2x00_async_gfpnid_sp_done;

	rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS)
		goto done_free_sp;

	ql_dbg(ql_dbg_disc, vha, 0xffff,
	    "Async-%s - %8phC hdl=%x loopid=%x portid %06x.\n",
	    sp->name, fcport->port_name,
	    sp->handle, fcport->loop_id, fcport->d_id.b24);
	return rval;

done_free_sp:
	sp->free(sp);
	fcport->flags &= ~FCF_ASYNC_SENT;
done:
	return rval;
}

int qla24xx_post_gfpnid_work(struct scsi_qla_host *vha, fc_port_t *fcport)
{
	struct qla_work_evt *e;
	int ls;

	ls = atomic_read(&vha->loop_state);
	if (((ls != LOOP_READY) && (ls != LOOP_UP)) ||
		test_bit(UNLOADING, &vha->dpc_flags))
		return 0;

	e = qla2x00_alloc_work(vha, QLA_EVT_GFPNID);
	if (!e)
		return QLA_FUNCTION_FAILED;

	e->u.fcport.fcport = fcport;
	return qla2x00_post_work(vha, e);
}