scsi: qla2xxx: Add FC-NVMe F/W initialization and transport registration

This code provides the interfaces to register remote and local ports of
FC4 type 0x28 with the FC-NVMe transport and transports the requests
(FC-NVMe FC link services and FC-NVMe commands IUs) to the fabric. It
also provides the support for allocating h/w queues and aborting FC-NVMe
FC requests.

Signed-off-by: Darren Trapp <darren.trapp@cavium.com>
Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurhty@cavium.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 756 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
new file mode 100644
index 000000000000..1da8fa8f641d
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -0,0 +1,756 @@
+/*
+ * QLogic Fibre Channel HBA Driver
+ * Copyright (c)  2003-2017 QLogic Corporation
+ *
+ * See LICENSE.qla2xxx for copyright and licensing details.
+ */
+#include "qla_nvme.h"
+#include "qla_def.h"
+#include <linux/scatterlist.h>
+#include <linux/delay.h>
+#include <linux/nvme.h>
+#include <linux/nvme-fc.h>
+
+static struct nvme_fc_port_template qla_nvme_fc_transport;
+
+static void qla_nvme_unregister_remote_port(struct work_struct *);
+
+int qla_nvme_register_remote(scsi_qla_host_t *vha, fc_port_t *fcport)
+{
+#if (IS_ENABLED(CONFIG_NVME_FC))
+	struct nvme_rport *rport;
+	int ret;
+
+	if (fcport->nvme_flag & NVME_FLAG_REGISTERED)
+		return 0;
+
+	if (!vha->flags.nvme_enabled) {
+		ql_log(ql_log_info, vha, 0x2100,
+		    "%s: Not registering target since Host NVME is not enabled\n",
+		    __func__);
+		return 0;
+	}
+
+	if (!(fcport->nvme_prli_service_param &
+	    (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)))
+		return 0;
+
+	INIT_WORK(&fcport->nvme_del_work, qla_nvme_unregister_remote_port);
+	rport = kzalloc(sizeof(*rport), GFP_KERNEL);
+	if (!rport) {
+		ql_log(ql_log_warn, vha, 0x2101,
+		    "%s: unable to alloc memory\n", __func__);
+		return -ENOMEM;
+	}
+
+	rport->req.port_name = wwn_to_u64(fcport->port_name);
+	rport->req.node_name = wwn_to_u64(fcport->node_name);
+	rport->req.port_role = 0;
+
+	if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
+		rport->req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
+
+	if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
+		rport->req.port_role |= FC_PORT_ROLE_NVME_TARGET;
+
+	if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
+		rport->req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
+
+	rport->req.port_id = fcport->d_id.b24;
+
+	ql_log(ql_log_info, vha, 0x2102,
+	    "%s: traddr=pn-0x%016llx:nn-0x%016llx PortID:%06x\n",
+	    __func__, rport->req.port_name, rport->req.node_name,
+	    rport->req.port_id);
+
+	ret = nvme_fc_register_remoteport(vha->nvme_local_port, &rport->req,
+	    &fcport->nvme_remote_port);
+	if (ret) {
+		ql_log(ql_log_warn, vha, 0x212e,
+		    "Failed to register remote port. Transport returned %d\n",
+		    ret);
+		return ret;
+	}
+
+	fcport->nvme_remote_port->private = fcport;
+	fcport->nvme_flag |= NVME_FLAG_REGISTERED;
+	atomic_set(&fcport->nvme_ref_count, 1);
+	init_waitqueue_head(&fcport->nvme_waitQ);
+	rport->fcport = fcport;
+	list_add_tail(&rport->list, &vha->nvme_rport_list);
+#endif
+	return 0;
+}
+
+/* Allocate a queue for NVMe traffic */
+static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport, unsigned int qidx,
+    u16 qsize, void **handle)
+{
+	struct scsi_qla_host *vha;
+	struct qla_hw_data *ha;
+	struct qla_qpair *qpair;
+
+	if (!qidx)
+		qidx++;
+
+	vha = (struct scsi_qla_host *)lport->private;
+	ha = vha->hw;
+
+	ql_log(ql_log_info, vha, 0x2104,
+	    "%s: handle %p, idx =%d, qsize %d\n",
+	    __func__, handle, qidx, qsize);
+
+	if (qidx > qla_nvme_fc_transport.max_hw_queues) {
+		ql_log(ql_log_warn, vha, 0x212f,
+		    "%s: Illegal qidx=%d. Max=%d\n",
+		    __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
+		return -EINVAL;
+	}
+
+	if (ha->queue_pair_map[qidx]) {
+		*handle = ha->queue_pair_map[qidx];
+		ql_log(ql_log_info, vha, 0x2121,
+		    "Returning existing qpair of %p for idx=%x\n",
+		    *handle, qidx);
+		return 0;
+	}
+
+	ql_log(ql_log_warn, vha, 0xffff,
+	    "allocating q for idx=%x w/o cpu mask\n", qidx);
+	qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
+	if (qpair == NULL) {
+		ql_log(ql_log_warn, vha, 0x2122,
+		    "Failed to allocate qpair\n");
+		return -EINVAL;
+	}
+	*handle = qpair;
+
+	return 0;
+}
+
+static void qla_nvme_sp_ls_done(void *ptr, int res)
+{
+	srb_t *sp = ptr;
+	struct srb_iocb *nvme;
+	struct nvmefc_ls_req   *fd;
+	struct nvme_private *priv;
+
+	if (atomic_read(&sp->ref_count) == 0) {
+		ql_log(ql_log_warn, sp->fcport->vha, 0x2123,
+		    "SP reference-count to ZERO on LS_done -- sp=%p.\n", sp);
+		return;
+	}
+
+	if (!atomic_dec_and_test(&sp->ref_count))
+		return;
+
+	if (res)
+		res = -EINVAL;
+
+	nvme = &sp->u.iocb_cmd;
+	fd = nvme->u.nvme.desc;
+	priv = fd->private;
+	priv->comp_status = res;
+	schedule_work(&priv->ls_work);
+	/* work schedule doesn't need the sp */
+	qla2x00_rel_sp(sp);
+}
+
+static void qla_nvme_sp_done(void *ptr, int res)
+{
+	srb_t *sp = ptr;
+	struct srb_iocb *nvme;
+	struct nvmefc_fcp_req *fd;
+
+	nvme = &sp->u.iocb_cmd;
+	fd = nvme->u.nvme.desc;
+
+	if (!atomic_dec_and_test(&sp->ref_count))
+		return;
+
+	if (!(sp->fcport->nvme_flag & NVME_FLAG_REGISTERED))
+		goto rel;
+
+	if (unlikely(nvme->u.nvme.comp_status || res))
+		fd->status = -EINVAL;
+	else
+		fd->status = 0;
+
+	fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
+	fd->done(fd);
+rel:
+	qla2xxx_rel_qpair_sp(sp->qpair, sp);
+}
+
+static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
+    struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
+{
+	struct nvme_private *priv = fd->private;
+	fc_port_t *fcport = rport->private;
+	srb_t *sp = priv->sp;
+	int rval;
+	struct qla_hw_data *ha = fcport->vha->hw;
+
+	rval = ha->isp_ops->abort_command(sp);
+	if (rval != QLA_SUCCESS)
+		ql_log(ql_log_warn, fcport->vha, 0x2125,
+		    "%s: failed to abort LS command for SP:%p rval=%x\n",
+		    __func__, sp, rval);
+
+	ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
+	    "%s: aborted sp:%p on fcport:%p\n", __func__, sp, fcport);
+}
+
+static void qla_nvme_ls_complete(struct work_struct *work)
+{
+	struct nvme_private *priv =
+	    container_of(work, struct nvme_private, ls_work);
+	struct nvmefc_ls_req *fd = priv->fd;
+
+	fd->done(fd, priv->comp_status);
+}
+
+static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
+    struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
+{
+	fc_port_t *fcport = (fc_port_t *)rport->private;
+	struct srb_iocb   *nvme;
+	struct nvme_private *priv = fd->private;
+	struct scsi_qla_host *vha;
+	int     rval = QLA_FUNCTION_FAILED;
+	struct qla_hw_data *ha;
+	srb_t           *sp;
+
+	if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
+		return rval;
+
+	vha = fcport->vha;
+	ha = vha->hw;
+	/* Alloc SRB structure */
+	sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
+	if (!sp)
+		return rval;
+
+	sp->type = SRB_NVME_LS;
+	sp->name = "nvme_ls";
+	sp->done = qla_nvme_sp_ls_done;
+	atomic_set(&sp->ref_count, 1);
+	init_waitqueue_head(&sp->nvme_ls_waitQ);
+	nvme = &sp->u.iocb_cmd;
+	priv->sp = sp;
+	priv->fd = fd;
+	INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
+	nvme->u.nvme.desc = fd;
+	nvme->u.nvme.dir = 0;
+	nvme->u.nvme.dl = 0;
+	nvme->u.nvme.cmd_len = fd->rqstlen;
+	nvme->u.nvme.rsp_len = fd->rsplen;
+	nvme->u.nvme.rsp_dma = fd->rspdma;
+	nvme->u.nvme.timeout_sec = fd->timeout;
+	nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
+	    fd->rqstlen, DMA_TO_DEVICE);
+	dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
+	    fd->rqstlen, DMA_TO_DEVICE);
+
+	rval = qla2x00_start_sp(sp);
+	if (rval != QLA_SUCCESS) {
+		ql_log(ql_log_warn, vha, 0x700e,
+		    "qla2x00_start_sp failed = %d\n", rval);
+		atomic_dec(&sp->ref_count);
+		wake_up(&sp->nvme_ls_waitQ);
+		return rval;
+	}
+
+	return rval;
+}
+
+static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
+    struct nvme_fc_remote_port *rport, void *hw_queue_handle,
+    struct nvmefc_fcp_req *fd)
+{
+	struct nvme_private *priv = fd->private;
+	srb_t *sp = priv->sp;
+	int rval;
+	fc_port_t *fcport = rport->private;
+	struct qla_hw_data *ha = fcport->vha->hw;
+
+	rval = ha->isp_ops->abort_command(sp);
+	if (!rval)
+		ql_log(ql_log_warn, fcport->vha, 0x2127,
+		    "%s: failed to abort command for SP:%p rval=%x\n",
+		    __func__, sp, rval);
+
+	ql_dbg(ql_dbg_io, fcport->vha, 0x2126,
+	    "%s: aborted sp:%p on fcport:%p\n", __func__, sp, fcport);
+}
+
+static void qla_nvme_poll(struct nvme_fc_local_port *lport, void *hw_queue_handle)
+{
+	struct scsi_qla_host *vha = lport->private;
+	unsigned long flags;
+	struct qla_qpair *qpair = (struct qla_qpair *)hw_queue_handle;
+
+	/* Acquire ring specific lock */
+	spin_lock_irqsave(&qpair->qp_lock, flags);
+	qla24xx_process_response_queue(vha, qpair->rsp);
+	spin_unlock_irqrestore(&qpair->qp_lock, flags);
+}
+
+static int qla2x00_start_nvme_mq(srb_t *sp)
+{
+	unsigned long   flags;
+	uint32_t        *clr_ptr;
+	uint32_t        index;
+	uint32_t        handle;
+	struct cmd_nvme *cmd_pkt;
+	uint16_t        cnt, i;
+	uint16_t        req_cnt;
+	uint16_t        tot_dsds;
+	uint16_t	avail_dsds;
+	uint32_t	*cur_dsd;
+	struct req_que *req = NULL;
+	struct scsi_qla_host *vha = sp->fcport->vha;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_qpair *qpair = sp->qpair;
+	struct srb_iocb *nvme = &sp->u.iocb_cmd;
+	struct scatterlist *sgl, *sg;
+	struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
+	uint32_t        rval = QLA_SUCCESS;
+
+	/* Setup qpair pointers */
+	req = qpair->req;
+	tot_dsds = fd->sg_cnt;
+
+	/* Acquire qpair specific lock */
+	spin_lock_irqsave(&qpair->qp_lock, flags);
+
+	/* Check for room in outstanding command list. */
+	handle = req->current_outstanding_cmd;
+	for (index = 1; index < req->num_outstanding_cmds; index++) {
+		handle++;
+		if (handle == req->num_outstanding_cmds)
+			handle = 1;
+		if (!req->outstanding_cmds[handle])
+			break;
+	}
+
+	if (index == req->num_outstanding_cmds) {
+		rval = -1;
+		goto queuing_error;
+	}
+	req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
+	if (req->cnt < (req_cnt + 2)) {
+		cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
+		    RD_REG_DWORD_RELAXED(req->req_q_out);
+
+		if (req->ring_index < cnt)
+			req->cnt = cnt - req->ring_index;
+		else
+			req->cnt = req->length - (req->ring_index - cnt);
+
+		if (req->cnt < (req_cnt + 2)){
+			rval = -1;
+			goto queuing_error;
+		}
+	}
+
+	if (unlikely(!fd->sqid)) {
+		struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
+		if (cmd->sqe.common.opcode == nvme_admin_async_event) {
+			nvme->u.nvme.aen_op = 1;
+			atomic_inc(&vha->nvme_active_aen_cnt);
+		}
+	}
+
+	/* Build command packet. */
+	req->current_outstanding_cmd = handle;
+	req->outstanding_cmds[handle] = sp;
+	sp->handle = handle;
+	req->cnt -= req_cnt;
+
+	cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
+	cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
+
+	/* Zero out remaining portion of packet. */
+	clr_ptr = (uint32_t *)cmd_pkt + 2;
+	memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
+
+	cmd_pkt->entry_status = 0;
+
+	/* Update entry type to indicate Command NVME IOCB */
+	cmd_pkt->entry_type = COMMAND_NVME;
+
+	/* No data transfer how do we check buffer len == 0?? */
+	if (fd->io_dir == NVMEFC_FCP_READ) {
+		cmd_pkt->control_flags =
+		    cpu_to_le16(CF_READ_DATA | CF_NVME_ENABLE);
+		vha->qla_stats.input_bytes += fd->payload_length;
+		vha->qla_stats.input_requests++;
+	} else if (fd->io_dir == NVMEFC_FCP_WRITE) {
+		cmd_pkt->control_flags =
+		    cpu_to_le16(CF_WRITE_DATA | CF_NVME_ENABLE);
+		vha->qla_stats.output_bytes += fd->payload_length;
+		vha->qla_stats.output_requests++;
+	} else if (fd->io_dir == 0) {
+		cmd_pkt->control_flags = cpu_to_le16(CF_NVME_ENABLE);
+	}
+
+	/* Set NPORT-ID */
+	cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
+	cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
+	cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
+	cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
+	cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
+
+	/* NVME RSP IU */
+	cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
+	cmd_pkt->nvme_rsp_dseg_address[0] = cpu_to_le32(LSD(fd->rspdma));
+	cmd_pkt->nvme_rsp_dseg_address[1] = cpu_to_le32(MSD(fd->rspdma));
+
+	/* NVME CNMD IU */
+	cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
+	cmd_pkt->nvme_cmnd_dseg_address[0] = cpu_to_le32(LSD(fd->cmddma));
+	cmd_pkt->nvme_cmnd_dseg_address[1] = cpu_to_le32(MSD(fd->cmddma));
+
+	cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
+	cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
+
+	/* One DSD is available in the Command Type NVME IOCB */
+	avail_dsds = 1;
+	cur_dsd = (uint32_t *)&cmd_pkt->nvme_data_dseg_address[0];
+	sgl = fd->first_sgl;
+
+	/* Load data segments */
+	for_each_sg(sgl, sg, tot_dsds, i) {
+		dma_addr_t      sle_dma;
+		cont_a64_entry_t *cont_pkt;
+
+		/* Allocate additional continuation packets? */
+		if (avail_dsds == 0) {
+			/*
+			 * Five DSDs are available in the Continuation
+			 * Type 1 IOCB.
+			 */
+
+			/* Adjust ring index */
+			req->ring_index++;
+			if (req->ring_index == req->length) {
+				req->ring_index = 0;
+				req->ring_ptr = req->ring;
+			} else {
+				req->ring_ptr++;
+			}
+			cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
+			cont_pkt->entry_type = cpu_to_le32(CONTINUE_A64_TYPE);
+
+			cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
+			avail_dsds = 5;
+		}
+
+		sle_dma = sg_dma_address(sg);
+		*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
+		*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
+		*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
+		avail_dsds--;
+	}
+
+	/* Set total entry count. */
+	cmd_pkt->entry_count = (uint8_t)req_cnt;
+	wmb();
+
+	/* Adjust ring index. */
+	req->ring_index++;
+	if (req->ring_index == req->length) {
+		req->ring_index = 0;
+		req->ring_ptr = req->ring;
+	} else {
+		req->ring_ptr++;
+	}
+
+	/* Set chip new ring index. */
+	WRT_REG_DWORD(req->req_q_in, req->ring_index);
+
+queuing_error:
+	spin_unlock_irqrestore(&qpair->qp_lock, flags);
+	return rval;
+}
+
+/* Post a command */
+static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
+    struct nvme_fc_remote_port *rport, void *hw_queue_handle,
+    struct nvmefc_fcp_req *fd)
+{
+	fc_port_t *fcport;
+	struct srb_iocb *nvme;
+	struct scsi_qla_host *vha;
+	int rval = QLA_FUNCTION_FAILED;
+	srb_t *sp;
+	struct qla_qpair *qpair = (struct qla_qpair *)hw_queue_handle;
+	struct nvme_private *priv;
+
+	if (!fd) {
+		ql_log(ql_log_warn, NULL, 0x2134, "NO NVMe FCP reqeust\n");
+		return rval;
+	}
+
+	priv = fd->private;
+	fcport = (fc_port_t *)rport->private;
+	if (!fcport) {
+		ql_log(ql_log_warn, NULL, 0x210e, "No fcport ptr\n");
+		return rval;
+	}
+
+	vha = fcport->vha;
+	if ((!qpair) || (!(fcport->nvme_flag & NVME_FLAG_REGISTERED)))
+		return -EBUSY;
+
+	/* Alloc SRB structure */
+	sp = qla2xxx_get_qpair_sp(qpair, fcport, GFP_ATOMIC);
+	if (!sp)
+		return -EIO;
+
+	atomic_set(&sp->ref_count, 1);
+	init_waitqueue_head(&sp->nvme_ls_waitQ);
+	priv->sp = sp;
+	sp->type = SRB_NVME_CMD;
+	sp->name = "nvme_cmd";
+	sp->done = qla_nvme_sp_done;
+	sp->qpair = qpair;
+	nvme = &sp->u.iocb_cmd;
+	nvme->u.nvme.desc = fd;
+
+	rval = qla2x00_start_nvme_mq(sp);
+	if (rval != QLA_SUCCESS) {
+		ql_log(ql_log_warn, vha, 0x212d,
+		    "qla2x00_start_nvme_mq failed = %d\n", rval);
+		atomic_dec(&sp->ref_count);
+		wake_up(&sp->nvme_ls_waitQ);
+		return -EIO;
+	}
+
+	return rval;
+}
+
+static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
+{
+	struct scsi_qla_host *vha = lport->private;
+
+	atomic_dec(&vha->nvme_ref_count);
+	wake_up_all(&vha->nvme_waitQ);
+
+	ql_log(ql_log_info, vha, 0x210f,
+	    "localport delete of %p completed.\n", vha->nvme_local_port);
+	vha->nvme_local_port = NULL;
+}
+
+static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
+{
+	fc_port_t *fcport;
+	struct nvme_rport *r_port, *trport;
+
+	fcport = (fc_port_t *)rport->private;
+	fcport->nvme_remote_port = NULL;
+	fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
+	atomic_dec(&fcport->nvme_ref_count);
+	wake_up_all(&fcport->nvme_waitQ);
+
+	list_for_each_entry_safe(r_port, trport,
+	    &fcport->vha->nvme_rport_list, list) {
+		if (r_port->fcport == fcport) {
+			list_del(&r_port->list);
+			break;
+		}
+	}
+	kfree(r_port);
+
+	ql_log(ql_log_info, fcport->vha, 0x2110,
+	    "remoteport_delete of %p completed.\n", fcport);
+}
+
+static struct nvme_fc_port_template qla_nvme_fc_transport = {
+	.localport_delete = qla_nvme_localport_delete,
+	.remoteport_delete = qla_nvme_remoteport_delete,
+	.create_queue   = qla_nvme_alloc_queue,
+	.delete_queue 	= NULL,
+	.ls_req		= qla_nvme_ls_req,
+	.ls_abort	= qla_nvme_ls_abort,
+	.fcp_io		= qla_nvme_post_cmd,
+	.fcp_abort	= qla_nvme_fcp_abort,
+	.poll_queue	= qla_nvme_poll,
+	.max_hw_queues  = 8,
+	.max_sgl_segments = 128,
+	.max_dif_sgl_segments = 64,
+	.dma_boundary = 0xFFFFFFFF,
+	.local_priv_sz  = 8,
+	.remote_priv_sz = 0,
+	.lsrqst_priv_sz = sizeof(struct nvme_private),
+	.fcprqst_priv_sz = sizeof(struct nvme_private),
+};
+
+#define NVME_ABORT_POLLING_PERIOD    2
+static int qla_nvme_wait_on_command(srb_t *sp)
+{
+	int ret = QLA_SUCCESS;
+
+	wait_event_timeout(sp->nvme_ls_waitQ, (atomic_read(&sp->ref_count) > 1),
+	    NVME_ABORT_POLLING_PERIOD*HZ);
+
+	if (atomic_read(&sp->ref_count) > 1)
+		ret = QLA_FUNCTION_FAILED;
+
+	return ret;
+}
+
+static int qla_nvme_wait_on_rport_del(fc_port_t *fcport)
+{
+	int ret = QLA_SUCCESS;
+
+	wait_event_timeout(fcport->nvme_waitQ,
+	    atomic_read(&fcport->nvme_ref_count),
+	    NVME_ABORT_POLLING_PERIOD*HZ);
+
+	if (atomic_read(&fcport->nvme_ref_count)) {
+		ret = QLA_FUNCTION_FAILED;
+		ql_log(ql_log_info, fcport->vha, 0x2111,
+		    "timed out waiting for fcport=%p to delete\n", fcport);
+	}
+
+	return ret;
+}
+
+void qla_nvme_abort(struct qla_hw_data *ha, srb_t *sp)
+{
+	int rval;
+
+	rval = ha->isp_ops->abort_command(sp);
+	if (!rval) {
+		if (!qla_nvme_wait_on_command(sp))
+			ql_log(ql_log_warn, NULL, 0x2112,
+			    "nvme_wait_on_comand timed out waiting on sp=%p\n",
+			    sp);
+	}
+}
+
+static void qla_nvme_abort_all(fc_port_t *fcport)
+{
+	int que, cnt;
+	unsigned long flags;
+	srb_t *sp;
+	struct qla_hw_data *ha = fcport->vha->hw;
+	struct req_que *req;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	for (que = 0; que < ha->max_req_queues; que++) {
+		req = ha->req_q_map[que];
+		if (!req)
+			continue;
+		if (!req->outstanding_cmds)
+			continue;
+		for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++) {
+			sp = req->outstanding_cmds[cnt];
+			if ((sp) && ((sp->type == SRB_NVME_CMD) ||
+			    (sp->type == SRB_NVME_LS)) &&
+				(sp->fcport == fcport)) {
+				atomic_inc(&sp->ref_count);
+				spin_unlock_irqrestore(&ha->hardware_lock,
+				    flags);
+				qla_nvme_abort(ha, sp);
+				spin_lock_irqsave(&ha->hardware_lock, flags);
+				req->outstanding_cmds[cnt] = NULL;
+				sp->done(sp, 1);
+			}
+		}
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static void qla_nvme_unregister_remote_port(struct work_struct *work)
+{
+#if (IS_ENABLED(CONFIG_NVME_FC))
+	struct fc_port *fcport = container_of(work, struct fc_port,
+	    nvme_del_work);
+	struct nvme_rport *rport, *trport;
+
+	list_for_each_entry_safe(rport, trport,
+	    &fcport->vha->nvme_rport_list, list) {
+		if (rport->fcport == fcport) {
+			ql_log(ql_log_info, fcport->vha, 0x2113,
+			    "%s: fcport=%p\n", __func__, fcport);
+			nvme_fc_unregister_remoteport(
+			    fcport->nvme_remote_port);
+		}
+	}
+#endif
+}
+
+void qla_nvme_delete(scsi_qla_host_t *vha)
+{
+#if (IS_ENABLED(CONFIG_NVME_FC))
+	struct nvme_rport *rport, *trport;
+	fc_port_t *fcport;
+	int nv_ret;
+
+	list_for_each_entry_safe(rport, trport, &vha->nvme_rport_list, list) {
+		fcport = rport->fcport;
+
+		ql_log(ql_log_info, fcport->vha, 0x2114, "%s: fcport=%p\n",
+		    __func__, fcport);
+
+		nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
+		qla_nvme_wait_on_rport_del(fcport);
+		qla_nvme_abort_all(fcport);
+	}
+
+	if (vha->nvme_local_port) {
+		nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
+		if (nv_ret == 0)
+			ql_log(ql_log_info, vha, 0x2116,
+			    "unregistered localport=%p\n",
+			    vha->nvme_local_port);
+		else
+			ql_log(ql_log_info, vha, 0x2115,
+			    "Unregister of localport failed\n");
+	}
+#endif
+}
+
+void qla_nvme_register_hba(scsi_qla_host_t *vha)
+{
+#if (IS_ENABLED(CONFIG_NVME_FC))
+	struct nvme_fc_port_template *tmpl;
+	struct qla_hw_data *ha;
+	struct nvme_fc_port_info pinfo;
+	int ret;
+
+	ha = vha->hw;
+	tmpl = &qla_nvme_fc_transport;
+
+	WARN_ON(vha->nvme_local_port);
+	WARN_ON(ha->max_req_queues < 3);
+
+	qla_nvme_fc_transport.max_hw_queues =
+	    min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
+		(uint8_t)(ha->max_req_queues - 2));
+
+	pinfo.node_name = wwn_to_u64(vha->node_name);
+	pinfo.port_name = wwn_to_u64(vha->port_name);
+	pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
+	pinfo.port_id = vha->d_id.b24;
+
+	ql_log(ql_log_info, vha, 0xffff,
+	    "register_localport: host-traddr=pn-0x%llx:nn-0x%llx on portID:%x\n",
+	    pinfo.port_name, pinfo.node_name, pinfo.port_id);
+	qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
+
+	ret = nvme_fc_register_localport(&pinfo, tmpl,
+	    get_device(&ha->pdev->dev), &vha->nvme_local_port);
+	if (ret) {
+		ql_log(ql_log_warn, vha, 0xffff,
+		    "register_localport failed: ret=%x\n", ret);
+		return;
+	}
+	atomic_set(&vha->nvme_ref_count, 1);
+	vha->nvme_local_port->private = vha;
+	init_waitqueue_head(&vha->nvme_waitQ);
+#endif
+}