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path: root/drivers/scsi/qla2xxx/qla_nvme.c
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Diffstat (limited to 'drivers/scsi/qla2xxx/qla_nvme.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_nvme.c926
1 files changed, 926 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
new file mode 100644
index 000000000..9941b38ea
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -0,0 +1,926 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * QLogic Fibre Channel HBA Driver
+ * Copyright (c) 2003-2017 QLogic Corporation
+ */
+#include "qla_nvme.h"
+#include <linux/scatterlist.h>
+#include <linux/delay.h>
+#include <linux/nvme.h>
+#include <linux/nvme-fc.h>
+#include <linux/blk-mq-pci.h>
+#include <linux/blk-mq.h>
+
+static struct nvme_fc_port_template qla_nvme_fc_transport;
+
+int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
+{
+ struct qla_nvme_rport *rport;
+ struct nvme_fc_port_info req;
+ int ret;
+
+ if (!IS_ENABLED(CONFIG_NVME_FC))
+ 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 (!vha->nvme_local_port && qla_nvme_register_hba(vha))
+ return 0;
+
+ if (!(fcport->nvme_prli_service_param &
+ (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
+ (fcport->nvme_flag & NVME_FLAG_REGISTERED))
+ return 0;
+
+ fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
+
+ memset(&req, 0, sizeof(struct nvme_fc_port_info));
+ req.port_name = wwn_to_u64(fcport->port_name);
+ req.node_name = wwn_to_u64(fcport->node_name);
+ req.port_role = 0;
+ req.dev_loss_tmo = fcport->dev_loss_tmo;
+
+ if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
+ req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
+
+ if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
+ req.port_role |= FC_PORT_ROLE_NVME_TARGET;
+
+ if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
+ req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
+
+ req.port_id = fcport->d_id.b24;
+
+ ql_log(ql_log_info, vha, 0x2102,
+ "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
+ __func__, req.node_name, req.port_name,
+ req.port_id);
+
+ ret = nvme_fc_register_remoteport(vha->nvme_local_port, &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;
+ }
+
+ nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port,
+ fcport->dev_loss_tmo);
+
+ if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER)
+ ql_log(ql_log_info, vha, 0x212a,
+ "PortID:%06x Supports SLER\n", req.port_id);
+
+ if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL)
+ ql_log(ql_log_info, vha, 0x212b,
+ "PortID:%06x Supports PI control\n", req.port_id);
+
+ rport = fcport->nvme_remote_port->private;
+ rport->fcport = fcport;
+
+ fcport->nvme_flag |= NVME_FLAG_REGISTERED;
+ 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;
+
+ /* Map admin queue and 1st IO queue to index 0 */
+ 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;
+ }
+
+ /* Use base qpair if max_qpairs is 0 */
+ if (!ha->max_qpairs) {
+ qpair = ha->base_qpair;
+ } else {
+ 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;
+ }
+
+ qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
+ if (!qpair) {
+ ql_log(ql_log_warn, vha, 0x2122,
+ "Failed to allocate qpair\n");
+ return -EINVAL;
+ }
+ qla_adjust_iocb_limit(vha);
+ }
+ *handle = qpair;
+
+ return 0;
+}
+
+static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
+{
+ struct srb *sp = container_of(kref, struct srb, cmd_kref);
+ struct nvme_private *priv = (struct nvme_private *)sp->priv;
+ struct nvmefc_fcp_req *fd;
+ struct srb_iocb *nvme;
+ unsigned long flags;
+
+ if (!priv)
+ goto out;
+
+ nvme = &sp->u.iocb_cmd;
+ fd = nvme->u.nvme.desc;
+
+ spin_lock_irqsave(&priv->cmd_lock, flags);
+ priv->sp = NULL;
+ sp->priv = NULL;
+ if (priv->comp_status == QLA_SUCCESS) {
+ fd->rcv_rsplen = le16_to_cpu(nvme->u.nvme.rsp_pyld_len);
+ fd->status = NVME_SC_SUCCESS;
+ } else {
+ fd->rcv_rsplen = 0;
+ fd->transferred_length = 0;
+ fd->status = NVME_SC_INTERNAL;
+ }
+ spin_unlock_irqrestore(&priv->cmd_lock, flags);
+
+ fd->done(fd);
+out:
+ qla2xxx_rel_qpair_sp(sp->qpair, sp);
+}
+
+static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
+{
+ struct srb *sp = container_of(kref, struct srb, cmd_kref);
+ struct nvme_private *priv = (struct nvme_private *)sp->priv;
+ struct nvmefc_ls_req *fd;
+ unsigned long flags;
+
+ if (!priv)
+ goto out;
+
+ spin_lock_irqsave(&priv->cmd_lock, flags);
+ priv->sp = NULL;
+ sp->priv = NULL;
+ spin_unlock_irqrestore(&priv->cmd_lock, flags);
+
+ fd = priv->fd;
+
+ fd->done(fd, priv->comp_status);
+out:
+ qla2x00_rel_sp(sp);
+}
+
+static void qla_nvme_ls_complete(struct work_struct *work)
+{
+ struct nvme_private *priv =
+ container_of(work, struct nvme_private, ls_work);
+
+ kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
+}
+
+static void qla_nvme_sp_ls_done(srb_t *sp, int res)
+{
+ struct nvme_private *priv = sp->priv;
+
+ if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
+ return;
+
+ if (res)
+ res = -EINVAL;
+
+ priv->comp_status = res;
+ INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
+ schedule_work(&priv->ls_work);
+}
+
+/* it assumed that QPair lock is held. */
+static void qla_nvme_sp_done(srb_t *sp, int res)
+{
+ struct nvme_private *priv = sp->priv;
+
+ priv->comp_status = res;
+ kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
+
+ return;
+}
+
+static void qla_nvme_abort_work(struct work_struct *work)
+{
+ struct nvme_private *priv =
+ container_of(work, struct nvme_private, abort_work);
+ srb_t *sp = priv->sp;
+ fc_port_t *fcport = sp->fcport;
+ struct qla_hw_data *ha = fcport->vha->hw;
+ int rval, abts_done_called = 1;
+ bool io_wait_for_abort_done;
+ uint32_t handle;
+
+ ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
+ "%s called for sp=%p, hndl=%x on fcport=%p desc=%p deleted=%d\n",
+ __func__, sp, sp->handle, fcport, sp->u.iocb_cmd.u.nvme.desc, fcport->deleted);
+
+ if (!ha->flags.fw_started || fcport->deleted == QLA_SESS_DELETED)
+ goto out;
+
+ if (ha->flags.host_shutting_down) {
+ ql_log(ql_log_info, sp->fcport->vha, 0xffff,
+ "%s Calling done on sp: %p, type: 0x%x\n",
+ __func__, sp, sp->type);
+ sp->done(sp, 0);
+ goto out;
+ }
+
+ /*
+ * sp may not be valid after abort_command if return code is either
+ * SUCCESS or ERR_FROM_FW codes, so cache the value here.
+ */
+ io_wait_for_abort_done = ql2xabts_wait_nvme &&
+ QLA_ABTS_WAIT_ENABLED(sp);
+ handle = sp->handle;
+
+ rval = ha->isp_ops->abort_command(sp);
+
+ ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
+ "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
+ __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
+ sp, handle, fcport, rval);
+
+ /*
+ * If async tmf is enabled, the abort callback is called only on
+ * return codes QLA_SUCCESS and QLA_ERR_FROM_FW.
+ */
+ if (ql2xasynctmfenable &&
+ rval != QLA_SUCCESS && rval != QLA_ERR_FROM_FW)
+ abts_done_called = 0;
+
+ /*
+ * Returned before decreasing kref so that I/O requests
+ * are waited until ABTS complete. This kref is decreased
+ * at qla24xx_abort_sp_done function.
+ */
+ if (abts_done_called && io_wait_for_abort_done)
+ return;
+out:
+ /* kref_get was done before work was schedule. */
+ kref_put(&sp->cmd_kref, sp->put_fn);
+}
+
+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;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->cmd_lock, flags);
+ if (!priv->sp) {
+ spin_unlock_irqrestore(&priv->cmd_lock, flags);
+ return;
+ }
+
+ if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
+ spin_unlock_irqrestore(&priv->cmd_lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&priv->cmd_lock, flags);
+
+ INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
+ schedule_work(&priv->abort_work);
+}
+
+static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
+ struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
+{
+ struct qla_nvme_rport *qla_rport = rport->private;
+ fc_port_t *fcport = qla_rport->fcport;
+ 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 || fcport->deleted)
+ return rval;
+
+ vha = fcport->vha;
+ ha = vha->hw;
+
+ if (!ha->flags.fw_started)
+ return rval;
+
+ /* 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;
+ sp->put_fn = qla_nvme_release_ls_cmd_kref;
+ sp->priv = priv;
+ priv->sp = sp;
+ kref_init(&sp->cmd_kref);
+ spin_lock_init(&priv->cmd_lock);
+ nvme = &sp->u.iocb_cmd;
+ priv->fd = fd;
+ 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 = fd->rqstdma;
+ 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);
+ sp->priv = NULL;
+ priv->sp = NULL;
+ qla2x00_rel_sp(sp);
+ 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;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->cmd_lock, flags);
+ if (!priv->sp) {
+ spin_unlock_irqrestore(&priv->cmd_lock, flags);
+ return;
+ }
+ if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
+ spin_unlock_irqrestore(&priv->cmd_lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&priv->cmd_lock, flags);
+
+ INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
+ schedule_work(&priv->abort_work);
+}
+
+static inline int qla2x00_start_nvme_mq(srb_t *sp)
+{
+ unsigned long flags;
+ uint32_t *clr_ptr;
+ uint32_t handle;
+ struct cmd_nvme *cmd_pkt;
+ uint16_t cnt, i;
+ uint16_t req_cnt;
+ uint16_t tot_dsds;
+ uint16_t avail_dsds;
+ struct dsd64 *cur_dsd;
+ struct req_que *req = NULL;
+ struct rsp_que *rsp = 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;
+ struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
+ uint32_t rval = QLA_SUCCESS;
+
+ /* Setup qpair pointers */
+ req = qpair->req;
+ rsp = qpair->rsp;
+ tot_dsds = fd->sg_cnt;
+
+ /* Acquire qpair specific lock */
+ spin_lock_irqsave(&qpair->qp_lock, flags);
+
+ handle = qla2xxx_get_next_handle(req);
+ if (handle == 0) {
+ rval = -EBUSY;
+ goto queuing_error;
+ }
+ req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
+
+ sp->iores.res_type = RESOURCE_IOCB | RESOURCE_EXCH;
+ sp->iores.exch_cnt = 1;
+ sp->iores.iocb_cnt = req_cnt;
+ if (qla_get_fw_resources(sp->qpair, &sp->iores)) {
+ rval = -EBUSY;
+ goto queuing_error;
+ }
+
+ if (req->cnt < (req_cnt + 2)) {
+ if (IS_SHADOW_REG_CAPABLE(ha)) {
+ cnt = *req->out_ptr;
+ } else {
+ cnt = rd_reg_dword_relaxed(req->req_q_out);
+ if (qla2x00_check_reg16_for_disconnect(vha, cnt)) {
+ rval = -EBUSY;
+ goto queuing_error;
+ }
+ }
+
+ 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 = -EBUSY;
+ goto queuing_error;
+ }
+ }
+
+ if (unlikely(!fd->sqid)) {
+ if (cmd->sqe.common.opcode == nvme_admin_async_event) {
+ nvme->u.nvme.aen_op = 1;
+ atomic_inc(&ha->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);
+ qpair->counters.input_bytes += fd->payload_length;
+ qpair->counters.input_requests++;
+ } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
+ cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
+ if ((vha->flags.nvme_first_burst) &&
+ (sp->fcport->nvme_prli_service_param &
+ NVME_PRLI_SP_FIRST_BURST)) {
+ if ((fd->payload_length <=
+ sp->fcport->nvme_first_burst_size) ||
+ (sp->fcport->nvme_first_burst_size == 0))
+ cmd_pkt->control_flags |=
+ cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
+ }
+ qpair->counters.output_bytes += fd->payload_length;
+ qpair->counters.output_requests++;
+ } else if (fd->io_dir == 0) {
+ cmd_pkt->control_flags = 0;
+ }
+
+ if (sp->fcport->edif.enable && fd->io_dir != 0)
+ cmd_pkt->control_flags |= cpu_to_le16(CF_EN_EDIF);
+
+ /* Set BIT_13 of control flags for Async event */
+ if (vha->flags.nvme2_enabled &&
+ cmd->sqe.common.opcode == nvme_admin_async_event) {
+ cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT);
+ }
+
+ /* 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);
+ put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
+
+ /* NVME CNMD IU */
+ cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
+ cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(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 = &cmd_pkt->nvme_dsd;
+ sgl = fd->first_sgl;
+
+ /* Load data segments */
+ for_each_sg(sgl, sg, tot_dsds, i) {
+ 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;
+ put_unaligned_le32(CONTINUE_A64_TYPE,
+ &cont_pkt->entry_type);
+
+ cur_dsd = cont_pkt->dsd;
+ avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
+ }
+
+ append_dsd64(&cur_dsd, 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++;
+ }
+
+ /* ignore nvme async cmd due to long timeout */
+ if (!nvme->u.nvme.aen_op)
+ sp->qpair->cmd_cnt++;
+
+ /* Set chip new ring index. */
+ wrt_reg_dword(req->req_q_in, req->ring_index);
+
+ if (vha->flags.process_response_queue &&
+ rsp->ring_ptr->signature != RESPONSE_PROCESSED)
+ qla24xx_process_response_queue(vha, rsp);
+
+queuing_error:
+ if (rval)
+ qla_put_fw_resources(sp->qpair, &sp->iores);
+ 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;
+ struct qla_hw_data *ha;
+ int rval;
+ srb_t *sp;
+ struct qla_qpair *qpair = hw_queue_handle;
+ struct nvme_private *priv = fd->private;
+ struct qla_nvme_rport *qla_rport = rport->private;
+
+ if (!priv) {
+ /* nvme association has been torn down */
+ return -ENODEV;
+ }
+
+ fcport = qla_rport->fcport;
+
+ if (unlikely(!qpair || !fcport || fcport->deleted))
+ return -EBUSY;
+
+ if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
+ return -ENODEV;
+
+ vha = fcport->vha;
+ ha = vha->hw;
+
+ if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
+ return -EBUSY;
+
+ /*
+ * If we know the dev is going away while the transport is still sending
+ * IO's return busy back to stall the IO Q. This happens when the
+ * link goes away and fw hasn't notified us yet, but IO's are being
+ * returned. If the dev comes back quickly we won't exhaust the IO
+ * retry count at the core.
+ */
+ if (fcport->nvme_flag & NVME_FLAG_RESETTING)
+ return -EBUSY;
+
+ qpair = qla_mapq_nvme_select_qpair(ha, qpair);
+
+ /* Alloc SRB structure */
+ sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
+ if (!sp)
+ return -EBUSY;
+
+ kref_init(&sp->cmd_kref);
+ spin_lock_init(&priv->cmd_lock);
+ sp->priv = priv;
+ priv->sp = sp;
+ sp->type = SRB_NVME_CMD;
+ sp->name = "nvme_cmd";
+ sp->done = qla_nvme_sp_done;
+ sp->put_fn = qla_nvme_release_fcp_cmd_kref;
+ sp->qpair = qpair;
+ sp->vha = vha;
+ sp->cmd_sp = sp;
+ nvme = &sp->u.iocb_cmd;
+ nvme->u.nvme.desc = fd;
+
+ rval = qla2x00_start_nvme_mq(sp);
+ if (rval != QLA_SUCCESS) {
+ ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x212d,
+ "qla2x00_start_nvme_mq failed = %d\n", rval);
+ sp->priv = NULL;
+ priv->sp = NULL;
+ qla2xxx_rel_qpair_sp(sp->qpair, sp);
+ }
+
+ return rval;
+}
+
+static void qla_nvme_map_queues(struct nvme_fc_local_port *lport,
+ struct blk_mq_queue_map *map)
+{
+ struct scsi_qla_host *vha = lport->private;
+
+ blk_mq_pci_map_queues(map, vha->hw->pdev, vha->irq_offset);
+}
+
+static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
+{
+ struct scsi_qla_host *vha = lport->private;
+
+ ql_log(ql_log_info, vha, 0x210f,
+ "localport delete of %p completed.\n", vha->nvme_local_port);
+ vha->nvme_local_port = NULL;
+ complete(&vha->nvme_del_done);
+}
+
+static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
+{
+ fc_port_t *fcport;
+ struct qla_nvme_rport *qla_rport = rport->private;
+
+ fcport = qla_rport->fcport;
+ fcport->nvme_remote_port = NULL;
+ fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
+ fcport->nvme_flag &= ~NVME_FLAG_DELETING;
+ ql_log(ql_log_info, fcport->vha, 0x2110,
+ "remoteport_delete of %p %8phN completed.\n",
+ fcport, fcport->port_name);
+ complete(&fcport->nvme_del_done);
+}
+
+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,
+ .map_queues = qla_nvme_map_queues,
+ .max_hw_queues = DEF_NVME_HW_QUEUES,
+ .max_sgl_segments = 1024,
+ .max_dif_sgl_segments = 64,
+ .dma_boundary = 0xFFFFFFFF,
+ .local_priv_sz = 8,
+ .remote_priv_sz = sizeof(struct qla_nvme_rport),
+ .lsrqst_priv_sz = sizeof(struct nvme_private),
+ .fcprqst_priv_sz = sizeof(struct nvme_private),
+};
+
+void qla_nvme_unregister_remote_port(struct fc_port *fcport)
+{
+ int ret;
+
+ if (!IS_ENABLED(CONFIG_NVME_FC))
+ return;
+
+ ql_log(ql_log_warn, fcport->vha, 0x2112,
+ "%s: unregister remoteport on %p %8phN\n",
+ __func__, fcport, fcport->port_name);
+
+ if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
+ nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
+
+ init_completion(&fcport->nvme_del_done);
+ ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
+ if (ret)
+ ql_log(ql_log_info, fcport->vha, 0x2114,
+ "%s: Failed to unregister nvme_remote_port (%d)\n",
+ __func__, ret);
+ wait_for_completion(&fcport->nvme_del_done);
+}
+
+void qla_nvme_delete(struct scsi_qla_host *vha)
+{
+ int nv_ret;
+
+ if (!IS_ENABLED(CONFIG_NVME_FC))
+ return;
+
+ if (vha->nvme_local_port) {
+ init_completion(&vha->nvme_del_done);
+ ql_log(ql_log_info, vha, 0x2116,
+ "unregister localport=%p\n",
+ vha->nvme_local_port);
+ nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
+ if (nv_ret)
+ ql_log(ql_log_info, vha, 0x2115,
+ "Unregister of localport failed\n");
+ else
+ wait_for_completion(&vha->nvme_del_done);
+ }
+}
+
+int qla_nvme_register_hba(struct scsi_qla_host *vha)
+{
+ struct nvme_fc_port_template *tmpl;
+ struct qla_hw_data *ha;
+ struct nvme_fc_port_info pinfo;
+ int ret = -EINVAL;
+
+ if (!IS_ENABLED(CONFIG_NVME_FC))
+ return ret;
+
+ ha = vha->hw;
+ tmpl = &qla_nvme_fc_transport;
+
+ if (ql2xnvme_queues < MIN_NVME_HW_QUEUES) {
+ ql_log(ql_log_warn, vha, 0xfffd,
+ "ql2xnvme_queues=%d is lower than minimum queues: %d. Resetting ql2xnvme_queues to:%d\n",
+ ql2xnvme_queues, MIN_NVME_HW_QUEUES, DEF_NVME_HW_QUEUES);
+ ql2xnvme_queues = DEF_NVME_HW_QUEUES;
+ } else if (ql2xnvme_queues > (ha->max_qpairs - 1)) {
+ ql_log(ql_log_warn, vha, 0xfffd,
+ "ql2xnvme_queues=%d is greater than available IRQs: %d. Resetting ql2xnvme_queues to: %d\n",
+ ql2xnvme_queues, (ha->max_qpairs - 1),
+ (ha->max_qpairs - 1));
+ ql2xnvme_queues = ((ha->max_qpairs - 1));
+ }
+
+ qla_nvme_fc_transport.max_hw_queues =
+ min((uint8_t)(ql2xnvme_queues),
+ (uint8_t)((ha->max_qpairs - 1) ? (ha->max_qpairs - 1) : 1));
+
+ ql_log(ql_log_info, vha, 0xfffb,
+ "Number of NVME queues used for this port: %d\n",
+ qla_nvme_fc_transport.max_hw_queues);
+
+ 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;
+
+ mutex_lock(&ha->vport_lock);
+ /*
+ * Check again for nvme_local_port to see if any other thread raced
+ * with this one and finished registration.
+ */
+ if (!vha->nvme_local_port) {
+ ql_log(ql_log_info, vha, 0xffff,
+ "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
+ pinfo.node_name, pinfo.port_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);
+ mutex_unlock(&ha->vport_lock);
+ } else {
+ mutex_unlock(&ha->vport_lock);
+ return 0;
+ }
+ if (ret) {
+ ql_log(ql_log_warn, vha, 0xffff,
+ "register_localport failed: ret=%x\n", ret);
+ } else {
+ vha->nvme_local_port->private = vha;
+ }
+
+ return ret;
+}
+
+void qla_nvme_abort_set_option(struct abort_entry_24xx *abt, srb_t *orig_sp)
+{
+ struct qla_hw_data *ha;
+
+ if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
+ return;
+
+ ha = orig_sp->fcport->vha->hw;
+
+ WARN_ON_ONCE(abt->options & cpu_to_le16(BIT_0));
+ /* Use Driver Specified Retry Count */
+ abt->options |= cpu_to_le16(AOF_ABTS_RTY_CNT);
+ abt->drv.abts_rty_cnt = cpu_to_le16(2);
+ /* Use specified response timeout */
+ abt->options |= cpu_to_le16(AOF_RSP_TIMEOUT);
+ /* set it to 2 * r_a_tov in secs */
+ abt->drv.rsp_timeout = cpu_to_le16(2 * (ha->r_a_tov / 10));
+}
+
+void qla_nvme_abort_process_comp_status(struct abort_entry_24xx *abt, srb_t *orig_sp)
+{
+ u16 comp_status;
+ struct scsi_qla_host *vha;
+
+ if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
+ return;
+
+ vha = orig_sp->fcport->vha;
+
+ comp_status = le16_to_cpu(abt->comp_status);
+ switch (comp_status) {
+ case CS_RESET: /* reset event aborted */
+ case CS_ABORTED: /* IOCB was cleaned */
+ /* N_Port handle is not currently logged in */
+ case CS_TIMEOUT:
+ /* N_Port handle was logged out while waiting for ABTS to complete */
+ case CS_PORT_UNAVAILABLE:
+ /* Firmware found that the port name changed */
+ case CS_PORT_LOGGED_OUT:
+ /* BA_RJT was received for the ABTS */
+ case CS_PORT_CONFIG_CHG:
+ ql_dbg(ql_dbg_async, vha, 0xf09d,
+ "Abort I/O IOCB completed with error, comp_status=%x\n",
+ comp_status);
+ break;
+
+ /* BA_RJT was received for the ABTS */
+ case CS_REJECT_RECEIVED:
+ ql_dbg(ql_dbg_async, vha, 0xf09e,
+ "BA_RJT was received for the ABTS rjt_vendorUnique = %u",
+ abt->fw.ba_rjt_vendorUnique);
+ ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09e,
+ "ba_rjt_reasonCodeExpl = %u, ba_rjt_reasonCode = %u\n",
+ abt->fw.ba_rjt_reasonCodeExpl, abt->fw.ba_rjt_reasonCode);
+ break;
+
+ case CS_COMPLETE:
+ ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0xf09f,
+ "IOCB request is completed successfully comp_status=%x\n",
+ comp_status);
+ break;
+
+ case CS_IOCB_ERROR:
+ ql_dbg(ql_dbg_async, vha, 0xf0a0,
+ "IOCB request is failed, comp_status=%x\n", comp_status);
+ break;
+
+ default:
+ ql_dbg(ql_dbg_async, vha, 0xf0a1,
+ "Invalid Abort IO IOCB Completion Status %x\n",
+ comp_status);
+ break;
+ }
+}
+
+inline void qla_wait_nvme_release_cmd_kref(srb_t *orig_sp)
+{
+ if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
+ return;
+ kref_put(&orig_sp->cmd_kref, orig_sp->put_fn);
+}