diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_nvme.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_nvme.c | 407 |
1 files changed, 404 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c index 86e85f2f4782..a8ddf356e662 100644 --- a/drivers/scsi/qla2xxx/qla_nvme.c +++ b/drivers/scsi/qla2xxx/qla_nvme.c @@ -12,6 +12,26 @@ #include <linux/blk-mq.h> static struct nvme_fc_port_template qla_nvme_fc_transport; +static int qla_nvme_ls_reject_iocb(struct scsi_qla_host *vha, + struct qla_qpair *qp, + struct qla_nvme_lsrjt_pt_arg *a, + bool is_xchg_terminate); + +struct qla_nvme_unsol_ctx { + struct list_head elem; + struct scsi_qla_host *vha; + struct fc_port *fcport; + struct srb *sp; + struct nvmefc_ls_rsp lsrsp; + struct nvmefc_ls_rsp *fd_rsp; + struct work_struct lsrsp_work; + struct work_struct abort_work; + __le32 exchange_address; + __le16 nport_handle; + __le16 ox_id; + int comp_status; + spinlock_t cmd_lock; +}; int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport) { @@ -132,6 +152,7 @@ static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport, "Failed to allocate qpair\n"); return -EINVAL; } + qla_adjust_iocb_limit(vha); } *handle = qpair; @@ -215,6 +236,55 @@ static void qla_nvme_sp_ls_done(srb_t *sp, int res) schedule_work(&priv->ls_work); } +static void qla_nvme_release_lsrsp_cmd_kref(struct kref *kref) +{ + struct srb *sp = container_of(kref, struct srb, cmd_kref); + struct qla_nvme_unsol_ctx *uctx = sp->priv; + struct nvmefc_ls_rsp *fd_rsp; + unsigned long flags; + + if (!uctx) { + qla2x00_rel_sp(sp); + return; + } + + spin_lock_irqsave(&uctx->cmd_lock, flags); + uctx->sp = NULL; + sp->priv = NULL; + spin_unlock_irqrestore(&uctx->cmd_lock, flags); + + fd_rsp = uctx->fd_rsp; + + list_del(&uctx->elem); + + fd_rsp->done(fd_rsp); + kfree(uctx); + qla2x00_rel_sp(sp); +} + +static void qla_nvme_lsrsp_complete(struct work_struct *work) +{ + struct qla_nvme_unsol_ctx *uctx = + container_of(work, struct qla_nvme_unsol_ctx, lsrsp_work); + + kref_put(&uctx->sp->cmd_kref, qla_nvme_release_lsrsp_cmd_kref); +} + +static void qla_nvme_sp_lsrsp_done(srb_t *sp, int res) +{ + struct qla_nvme_unsol_ctx *uctx = sp->priv; + + if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0)) + return; + + if (res) + res = -EINVAL; + + uctx->comp_status = res; + INIT_WORK(&uctx->lsrsp_work, qla_nvme_lsrsp_complete); + schedule_work(&uctx->lsrsp_work); +} + /* it assumed that QPair lock is held. */ static void qla_nvme_sp_done(srb_t *sp, int res) { @@ -287,6 +357,92 @@ out: kref_put(&sp->cmd_kref, sp->put_fn); } +static int qla_nvme_xmt_ls_rsp(struct nvme_fc_local_port *lport, + struct nvme_fc_remote_port *rport, + struct nvmefc_ls_rsp *fd_resp) +{ + struct qla_nvme_unsol_ctx *uctx = container_of(fd_resp, + struct qla_nvme_unsol_ctx, lsrsp); + struct qla_nvme_rport *qla_rport = rport->private; + fc_port_t *fcport = qla_rport->fcport; + struct scsi_qla_host *vha = uctx->vha; + struct qla_hw_data *ha = vha->hw; + struct qla_nvme_lsrjt_pt_arg a; + struct srb_iocb *nvme; + srb_t *sp; + int rval = QLA_FUNCTION_FAILED; + uint8_t cnt = 0; + + if (!fcport || fcport->deleted) + goto out; + + if (!ha->flags.fw_started) + goto out; + + /* Alloc SRB structure */ + sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); + if (!sp) + goto out; + + sp->type = SRB_NVME_LS; + sp->name = "nvme_ls"; + sp->done = qla_nvme_sp_lsrsp_done; + sp->put_fn = qla_nvme_release_lsrsp_cmd_kref; + sp->priv = (void *)uctx; + sp->unsol_rsp = 1; + uctx->sp = sp; + spin_lock_init(&uctx->cmd_lock); + nvme = &sp->u.iocb_cmd; + uctx->fd_rsp = fd_resp; + nvme->u.nvme.desc = fd_resp; + nvme->u.nvme.dir = 0; + nvme->u.nvme.dl = 0; + nvme->u.nvme.timeout_sec = 0; + nvme->u.nvme.cmd_dma = fd_resp->rspdma; + nvme->u.nvme.cmd_len = cpu_to_le32(fd_resp->rsplen); + nvme->u.nvme.rsp_len = 0; + nvme->u.nvme.rsp_dma = 0; + nvme->u.nvme.exchange_address = uctx->exchange_address; + nvme->u.nvme.nport_handle = uctx->nport_handle; + nvme->u.nvme.ox_id = uctx->ox_id; + dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma, + fd_resp->rsplen, DMA_TO_DEVICE); + + ql_dbg(ql_dbg_unsol, vha, 0x2122, + "Unsol lsreq portid=%06x %8phC exchange_address 0x%x ox_id 0x%x hdl 0x%x\n", + fcport->d_id.b24, fcport->port_name, uctx->exchange_address, + uctx->ox_id, uctx->nport_handle); +retry: + rval = qla2x00_start_sp(sp); + switch (rval) { + case QLA_SUCCESS: + break; + case EAGAIN: + msleep(PURLS_MSLEEP_INTERVAL); + cnt++; + if (cnt < PURLS_RETRY_COUNT) + goto retry; + + fallthrough; + default: + ql_dbg(ql_log_warn, vha, 0x2123, + "Failed to xmit Unsol ls response = %d\n", rval); + rval = -EIO; + qla2x00_rel_sp(sp); + goto out; + } + + return 0; +out: + memset((void *)&a, 0, sizeof(a)); + a.vp_idx = vha->vp_idx; + a.nport_handle = uctx->nport_handle; + a.xchg_address = uctx->exchange_address; + qla_nvme_ls_reject_iocb(vha, ha->base_qpair, &a, true); + kfree(uctx); + return rval; +} + static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport, struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd) { @@ -348,8 +504,8 @@ static int qla_nvme_ls_req(struct nvme_fc_local_port *lport, 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.cmd_len = cpu_to_le32(fd->rqstlen); + nvme->u.nvme.rsp_len = cpu_to_le32(fd->rsplen); nvme->u.nvme.rsp_dma = fd->rspdma; nvme->u.nvme.timeout_sec = fd->timeout; nvme->u.nvme.cmd_dma = fd->rqstdma; @@ -667,7 +823,7 @@ static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport, rval = qla2x00_start_nvme_mq(sp); if (rval != QLA_SUCCESS) { - ql_log(ql_log_warn, vha, 0x212d, + ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x212d, "qla2x00_start_nvme_mq failed = %d\n", rval); sp->priv = NULL; priv->sp = NULL; @@ -719,6 +875,7 @@ static struct nvme_fc_port_template qla_nvme_fc_transport = { .ls_abort = qla_nvme_ls_abort, .fcp_io = qla_nvme_post_cmd, .fcp_abort = qla_nvme_fcp_abort, + .xmt_ls_rsp = qla_nvme_xmt_ls_rsp, .map_queues = qla_nvme_map_queues, .max_hw_queues = DEF_NVME_HW_QUEUES, .max_sgl_segments = 1024, @@ -923,3 +1080,247 @@ inline void qla_wait_nvme_release_cmd_kref(srb_t *orig_sp) return; kref_put(&orig_sp->cmd_kref, orig_sp->put_fn); } + +static void qla_nvme_fc_format_rjt(void *buf, u8 ls_cmd, u8 reason, + u8 explanation, u8 vendor) +{ + struct fcnvme_ls_rjt *rjt = buf; + + rjt->w0.ls_cmd = FCNVME_LSDESC_RQST; + rjt->desc_list_len = fcnvme_lsdesc_len(sizeof(struct fcnvme_ls_rjt)); + rjt->rqst.desc_tag = cpu_to_be32(FCNVME_LSDESC_RQST); + rjt->rqst.desc_len = + fcnvme_lsdesc_len(sizeof(struct fcnvme_lsdesc_rqst)); + rjt->rqst.w0.ls_cmd = ls_cmd; + rjt->rjt.desc_tag = cpu_to_be32(FCNVME_LSDESC_RJT); + rjt->rjt.desc_len = fcnvme_lsdesc_len(sizeof(struct fcnvme_lsdesc_rjt)); + rjt->rjt.reason_code = reason; + rjt->rjt.reason_explanation = explanation; + rjt->rjt.vendor = vendor; +} + +static void qla_nvme_lsrjt_pt_iocb(struct scsi_qla_host *vha, + struct pt_ls4_request *lsrjt_iocb, + struct qla_nvme_lsrjt_pt_arg *a) +{ + lsrjt_iocb->entry_type = PT_LS4_REQUEST; + lsrjt_iocb->entry_count = 1; + lsrjt_iocb->sys_define = 0; + lsrjt_iocb->entry_status = 0; + lsrjt_iocb->handle = QLA_SKIP_HANDLE; + lsrjt_iocb->nport_handle = a->nport_handle; + lsrjt_iocb->exchange_address = a->xchg_address; + lsrjt_iocb->vp_index = a->vp_idx; + + lsrjt_iocb->control_flags = cpu_to_le16(a->control_flags); + + put_unaligned_le64(a->tx_addr, &lsrjt_iocb->dsd[0].address); + lsrjt_iocb->dsd[0].length = cpu_to_le32(a->tx_byte_count); + lsrjt_iocb->tx_dseg_count = cpu_to_le16(1); + lsrjt_iocb->tx_byte_count = cpu_to_le32(a->tx_byte_count); + + put_unaligned_le64(a->rx_addr, &lsrjt_iocb->dsd[1].address); + lsrjt_iocb->dsd[1].length = 0; + lsrjt_iocb->rx_dseg_count = 0; + lsrjt_iocb->rx_byte_count = 0; +} + +static int +qla_nvme_ls_reject_iocb(struct scsi_qla_host *vha, struct qla_qpair *qp, + struct qla_nvme_lsrjt_pt_arg *a, bool is_xchg_terminate) +{ + struct pt_ls4_request *lsrjt_iocb; + + lsrjt_iocb = __qla2x00_alloc_iocbs(qp, NULL); + if (!lsrjt_iocb) { + ql_log(ql_log_warn, vha, 0x210e, + "qla2x00_alloc_iocbs failed.\n"); + return QLA_FUNCTION_FAILED; + } + + if (!is_xchg_terminate) { + qla_nvme_fc_format_rjt((void *)vha->hw->lsrjt.c, a->opcode, + a->reason, a->explanation, 0); + + a->tx_byte_count = sizeof(struct fcnvme_ls_rjt); + a->tx_addr = vha->hw->lsrjt.cdma; + a->control_flags = CF_LS4_RESPONDER << CF_LS4_SHIFT; + + ql_dbg(ql_dbg_unsol, vha, 0x211f, + "Sending nvme fc ls reject ox_id %04x op %04x\n", + a->ox_id, a->opcode); + ql_dump_buffer(ql_dbg_unsol + ql_dbg_verbose, vha, 0x210f, + vha->hw->lsrjt.c, sizeof(*vha->hw->lsrjt.c)); + } else { + a->tx_byte_count = 0; + a->control_flags = CF_LS4_RESPONDER_TERM << CF_LS4_SHIFT; + ql_dbg(ql_dbg_unsol, vha, 0x2110, + "Terminate nvme ls xchg 0x%x\n", a->xchg_address); + } + + qla_nvme_lsrjt_pt_iocb(vha, lsrjt_iocb, a); + /* flush iocb to mem before notifying hw doorbell */ + wmb(); + qla2x00_start_iocbs(vha, qp->req); + return 0; +} + +/* + * qla2xxx_process_purls_pkt() - Pass-up Unsolicited + * Received FC-NVMe Link Service pkt to nvme_fc_rcv_ls_req(). + * LLDD need to provide memory for response buffer, which + * will be used to reference the exchange corresponding + * to the LS when issuing an ls response. LLDD will have to free + * response buffer in lport->ops->xmt_ls_rsp(). + * + * @vha: SCSI qla host + * @item: ptr to purex_item + */ +static void +qla2xxx_process_purls_pkt(struct scsi_qla_host *vha, struct purex_item *item) +{ + struct qla_nvme_unsol_ctx *uctx = item->purls_context; + struct qla_nvme_lsrjt_pt_arg a; + int ret = 1; + +#if (IS_ENABLED(CONFIG_NVME_FC)) + ret = nvme_fc_rcv_ls_req(uctx->fcport->nvme_remote_port, &uctx->lsrsp, + &item->iocb, item->size); +#endif + if (ret) { + ql_dbg(ql_dbg_unsol, vha, 0x2125, "NVMe transport ls_req failed\n"); + memset((void *)&a, 0, sizeof(a)); + a.vp_idx = vha->vp_idx; + a.nport_handle = uctx->nport_handle; + a.xchg_address = uctx->exchange_address; + qla_nvme_ls_reject_iocb(vha, vha->hw->base_qpair, &a, true); + list_del(&uctx->elem); + kfree(uctx); + } +} + +static scsi_qla_host_t * +qla2xxx_get_vha_from_vp_idx(struct qla_hw_data *ha, uint16_t vp_index) +{ + scsi_qla_host_t *base_vha, *vha, *tvp; + unsigned long flags; + + base_vha = pci_get_drvdata(ha->pdev); + + if (!vp_index && !ha->num_vhosts) + return base_vha; + + spin_lock_irqsave(&ha->vport_slock, flags); + list_for_each_entry_safe(vha, tvp, &ha->vp_list, list) { + if (vha->vp_idx == vp_index) { + spin_unlock_irqrestore(&ha->vport_slock, flags); + return vha; + } + } + spin_unlock_irqrestore(&ha->vport_slock, flags); + + return NULL; +} + +void qla2xxx_process_purls_iocb(void **pkt, struct rsp_que **rsp) +{ + struct nvme_fc_remote_port *rport; + struct qla_nvme_rport *qla_rport; + struct qla_nvme_lsrjt_pt_arg a; + struct pt_ls4_rx_unsol *p = *pkt; + struct qla_nvme_unsol_ctx *uctx; + struct rsp_que *rsp_q = *rsp; + struct qla_hw_data *ha; + scsi_qla_host_t *vha; + fc_port_t *fcport = NULL; + struct purex_item *item; + port_id_t d_id = {0}; + port_id_t id = {0}; + u8 *opcode; + bool xmt_reject = false; + + ha = rsp_q->hw; + + vha = qla2xxx_get_vha_from_vp_idx(ha, p->vp_index); + if (!vha) { + ql_log(ql_log_warn, NULL, 0x2110, "Invalid vp index %d\n", p->vp_index); + WARN_ON_ONCE(1); + return; + } + + memset((void *)&a, 0, sizeof(a)); + opcode = (u8 *)&p->payload[0]; + a.opcode = opcode[3]; + a.vp_idx = p->vp_index; + a.nport_handle = p->nport_handle; + a.ox_id = p->ox_id; + a.xchg_address = p->exchange_address; + + id.b.domain = p->s_id.domain; + id.b.area = p->s_id.area; + id.b.al_pa = p->s_id.al_pa; + d_id.b.domain = p->d_id[2]; + d_id.b.area = p->d_id[1]; + d_id.b.al_pa = p->d_id[0]; + + fcport = qla2x00_find_fcport_by_nportid(vha, &id, 0); + if (!fcport) { + ql_dbg(ql_dbg_unsol, vha, 0x211e, + "Failed to find sid=%06x did=%06x\n", + id.b24, d_id.b24); + a.reason = FCNVME_RJT_RC_INV_ASSOC; + a.explanation = FCNVME_RJT_EXP_NONE; + xmt_reject = true; + goto out; + } + rport = fcport->nvme_remote_port; + qla_rport = rport->private; + + item = qla27xx_copy_multiple_pkt(vha, pkt, rsp, true, false); + if (!item) { + a.reason = FCNVME_RJT_RC_LOGIC; + a.explanation = FCNVME_RJT_EXP_NONE; + xmt_reject = true; + goto out; + } + + uctx = kzalloc(sizeof(*uctx), GFP_ATOMIC); + if (!uctx) { + ql_log(ql_log_info, vha, 0x2126, "Failed allocate memory\n"); + a.reason = FCNVME_RJT_RC_LOGIC; + a.explanation = FCNVME_RJT_EXP_NONE; + xmt_reject = true; + kfree(item); + goto out; + } + + uctx->vha = vha; + uctx->fcport = fcport; + uctx->exchange_address = p->exchange_address; + uctx->nport_handle = p->nport_handle; + uctx->ox_id = p->ox_id; + qla_rport->uctx = uctx; + INIT_LIST_HEAD(&uctx->elem); + list_add_tail(&uctx->elem, &fcport->unsol_ctx_head); + item->purls_context = (void *)uctx; + + ql_dbg(ql_dbg_unsol, vha, 0x2121, + "PURLS OP[%01x] size %d xchg addr 0x%x portid %06x\n", + item->iocb.iocb[3], item->size, uctx->exchange_address, + fcport->d_id.b24); + /* +48 0 1 2 3 4 5 6 7 8 9 A B C D E F + * ----- ----------------------------------------------- + * 0000: 00 00 00 05 28 00 00 00 07 00 00 00 08 00 00 00 + * 0010: ab ec 0f cc 00 00 8d 7d 05 00 00 00 10 00 00 00 + * 0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + */ + ql_dump_buffer(ql_dbg_unsol + ql_dbg_verbose, vha, 0x2120, + &item->iocb, item->size); + + qla24xx_queue_purex_item(vha, item, qla2xxx_process_purls_pkt); +out: + if (xmt_reject) { + qla_nvme_ls_reject_iocb(vha, (*rsp)->qpair, &a, false); + __qla_consume_iocb(vha, pkt, rsp); + } +} |