| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Selvin Xavier | 9716 | 59.89% | 16 | 32.00% |
| Devesh Sharma | 5819 | 35.87% | 17 | 34.00% |
| Eddie Wai | 550 | 3.39% | 1 | 2.00% |
| Joe Perches | 51 | 0.31% | 1 | 2.00% |
| Somnath Kotur | 23 | 0.14% | 4 | 8.00% |
| Leon Romanovsky | 18 | 0.11% | 2 | 4.00% |
| Allen Pais | 13 | 0.08% | 1 | 2.00% |
| Dan Carpenter | 10 | 0.06% | 2 | 4.00% |
| Kamal Heib | 7 | 0.04% | 2 | 4.00% |
| Naresh Kumar PBS | 6 | 0.04% | 1 | 2.00% |
| Wang Wensheng | 5 | 0.03% | 1 | 2.00% |
| Arnd Bergmann | 4 | 0.02% | 1 | 2.00% |
| Gustavo A. R. Silva | 2 | 0.01% | 1 | 2.00% |
| Total | 16224 | 50 |
/* * Broadcom NetXtreme-E RoCE driver. * * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term * Broadcom refers to Broadcom Limited and/or its subsidiaries. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * BSD license below: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Description: Fast Path Operators */ #define dev_fmt(fmt) "QPLIB: " fmt #include <linux/interrupt.h> #include <linux/spinlock.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/pci.h> #include <linux/delay.h> #include <linux/prefetch.h> #include <linux/if_ether.h> #include <rdma/ib_mad.h> #include "roce_hsi.h" #include "qplib_res.h" #include "qplib_rcfw.h" #include "qplib_sp.h" #include "qplib_fp.h" static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp); static void bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp *qp) { qp->sq.condition = false; qp->sq.send_phantom = false; qp->sq.single = false; } /* Flush list */ static void __bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp) { struct bnxt_qplib_cq *scq, *rcq; scq = qp->scq; rcq = qp->rcq; if (!qp->sq.flushed) { dev_dbg(&scq->hwq.pdev->dev, "FP: Adding to SQ Flush list = %p\n", qp); bnxt_qplib_cancel_phantom_processing(qp); list_add_tail(&qp->sq_flush, &scq->sqf_head); qp->sq.flushed = true; } if (!qp->srq) { if (!qp->rq.flushed) { dev_dbg(&rcq->hwq.pdev->dev, "FP: Adding to RQ Flush list = %p\n", qp); list_add_tail(&qp->rq_flush, &rcq->rqf_head); qp->rq.flushed = true; } } } static void bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp *qp, unsigned long *flags) __acquires(&qp->scq->flush_lock) __acquires(&qp->rcq->flush_lock) { spin_lock_irqsave(&qp->scq->flush_lock, *flags); if (qp->scq == qp->rcq) __acquire(&qp->rcq->flush_lock); else spin_lock(&qp->rcq->flush_lock); } static void bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp *qp, unsigned long *flags) __releases(&qp->scq->flush_lock) __releases(&qp->rcq->flush_lock) { if (qp->scq == qp->rcq) __release(&qp->rcq->flush_lock); else spin_unlock(&qp->rcq->flush_lock); spin_unlock_irqrestore(&qp->scq->flush_lock, *flags); } void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp) { unsigned long flags; bnxt_qplib_acquire_cq_flush_locks(qp, &flags); __bnxt_qplib_add_flush_qp(qp); bnxt_qplib_release_cq_flush_locks(qp, &flags); } static void __bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp) { if (qp->sq.flushed) { qp->sq.flushed = false; list_del(&qp->sq_flush); } if (!qp->srq) { if (qp->rq.flushed) { qp->rq.flushed = false; list_del(&qp->rq_flush); } } } void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp) { unsigned long flags; bnxt_qplib_acquire_cq_flush_locks(qp, &flags); __clean_cq(qp->scq, (u64)(unsigned long)qp); qp->sq.hwq.prod = 0; qp->sq.hwq.cons = 0; __clean_cq(qp->rcq, (u64)(unsigned long)qp); qp->rq.hwq.prod = 0; qp->rq.hwq.cons = 0; __bnxt_qplib_del_flush_qp(qp); bnxt_qplib_release_cq_flush_locks(qp, &flags); } static void bnxt_qpn_cqn_sched_task(struct work_struct *work) { struct bnxt_qplib_nq_work *nq_work = container_of(work, struct bnxt_qplib_nq_work, work); struct bnxt_qplib_cq *cq = nq_work->cq; struct bnxt_qplib_nq *nq = nq_work->nq; if (cq && nq) { spin_lock_bh(&cq->compl_lock); if (atomic_read(&cq->arm_state) && nq->cqn_handler) { dev_dbg(&nq->pdev->dev, "%s:Trigger cq = %p event nq = %p\n", __func__, cq, nq); nq->cqn_handler(nq, cq); } spin_unlock_bh(&cq->compl_lock); } kfree(nq_work); } static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) { struct bnxt_qplib_q *rq = &qp->rq; struct bnxt_qplib_q *sq = &qp->sq; if (qp->rq_hdr_buf) dma_free_coherent(&res->pdev->dev, rq->max_wqe * qp->rq_hdr_buf_size, qp->rq_hdr_buf, qp->rq_hdr_buf_map); if (qp->sq_hdr_buf) dma_free_coherent(&res->pdev->dev, sq->max_wqe * qp->sq_hdr_buf_size, qp->sq_hdr_buf, qp->sq_hdr_buf_map); qp->rq_hdr_buf = NULL; qp->sq_hdr_buf = NULL; qp->rq_hdr_buf_map = 0; qp->sq_hdr_buf_map = 0; qp->sq_hdr_buf_size = 0; qp->rq_hdr_buf_size = 0; } static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) { struct bnxt_qplib_q *rq = &qp->rq; struct bnxt_qplib_q *sq = &qp->sq; int rc = 0; if (qp->sq_hdr_buf_size && sq->max_wqe) { qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev, sq->max_wqe * qp->sq_hdr_buf_size, &qp->sq_hdr_buf_map, GFP_KERNEL); if (!qp->sq_hdr_buf) { rc = -ENOMEM; dev_err(&res->pdev->dev, "Failed to create sq_hdr_buf\n"); goto fail; } } if (qp->rq_hdr_buf_size && rq->max_wqe) { qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev, rq->max_wqe * qp->rq_hdr_buf_size, &qp->rq_hdr_buf_map, GFP_KERNEL); if (!qp->rq_hdr_buf) { rc = -ENOMEM; dev_err(&res->pdev->dev, "Failed to create rq_hdr_buf\n"); goto fail; } } return 0; fail: bnxt_qplib_free_qp_hdr_buf(res, qp); return rc; } static void clean_nq(struct bnxt_qplib_nq *nq, struct bnxt_qplib_cq *cq) { struct bnxt_qplib_hwq *hwq = &nq->hwq; struct nq_base *nqe, **nq_ptr; int budget = nq->budget; u32 sw_cons, raw_cons; uintptr_t q_handle; u16 type; spin_lock_bh(&hwq->lock); /* Service the NQ until empty */ raw_cons = hwq->cons; while (budget--) { sw_cons = HWQ_CMP(raw_cons, hwq); nq_ptr = (struct nq_base **)hwq->pbl_ptr; nqe = &nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)]; if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements)) break; /* * The valid test of the entry must be done first before * reading any further. */ dma_rmb(); type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK; switch (type) { case NQ_BASE_TYPE_CQ_NOTIFICATION: { struct nq_cn *nqcne = (struct nq_cn *)nqe; q_handle = le32_to_cpu(nqcne->cq_handle_low); q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high) << 32; if ((unsigned long)cq == q_handle) { nqcne->cq_handle_low = 0; nqcne->cq_handle_high = 0; cq->cnq_events++; } break; } default: break; } raw_cons++; } spin_unlock_bh(&hwq->lock); } /* Wait for receiving all NQEs for this CQ and clean the NQEs associated with * this CQ. */ static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events) { u32 retry_cnt = 100; while (retry_cnt--) { if (cnq_events == cq->cnq_events) return; usleep_range(50, 100); clean_nq(cq->nq, cq); } } static void bnxt_qplib_service_nq(struct tasklet_struct *t) { struct bnxt_qplib_nq *nq = from_tasklet(nq, t, nq_tasklet); struct bnxt_qplib_hwq *hwq = &nq->hwq; int num_srqne_processed = 0; int num_cqne_processed = 0; struct bnxt_qplib_cq *cq; int budget = nq->budget; u32 sw_cons, raw_cons; struct nq_base *nqe; uintptr_t q_handle; u16 type; spin_lock_bh(&hwq->lock); /* Service the NQ until empty */ raw_cons = hwq->cons; while (budget--) { sw_cons = HWQ_CMP(raw_cons, hwq); nqe = bnxt_qplib_get_qe(hwq, sw_cons, NULL); if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements)) break; /* * The valid test of the entry must be done first before * reading any further. */ dma_rmb(); type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK; switch (type) { case NQ_BASE_TYPE_CQ_NOTIFICATION: { struct nq_cn *nqcne = (struct nq_cn *)nqe; q_handle = le32_to_cpu(nqcne->cq_handle_low); q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high) << 32; cq = (struct bnxt_qplib_cq *)(unsigned long)q_handle; if (!cq) break; bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA); spin_lock_bh(&cq->compl_lock); atomic_set(&cq->arm_state, 0); if (!nq->cqn_handler(nq, (cq))) num_cqne_processed++; else dev_warn(&nq->pdev->dev, "cqn - type 0x%x not handled\n", type); cq->cnq_events++; spin_unlock_bh(&cq->compl_lock); break; } case NQ_BASE_TYPE_SRQ_EVENT: { struct bnxt_qplib_srq *srq; struct nq_srq_event *nqsrqe = (struct nq_srq_event *)nqe; q_handle = le32_to_cpu(nqsrqe->srq_handle_low); q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high) << 32; srq = (struct bnxt_qplib_srq *)q_handle; bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA); if (!nq->srqn_handler(nq, (struct bnxt_qplib_srq *)q_handle, nqsrqe->event)) num_srqne_processed++; else dev_warn(&nq->pdev->dev, "SRQ event 0x%x not handled\n", nqsrqe->event); break; } case NQ_BASE_TYPE_DBQ_EVENT: break; default: dev_warn(&nq->pdev->dev, "nqe with type = 0x%x not handled\n", type); break; } raw_cons++; } if (hwq->cons != raw_cons) { hwq->cons = raw_cons; bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true); } spin_unlock_bh(&hwq->lock); } static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance) { struct bnxt_qplib_nq *nq = dev_instance; struct bnxt_qplib_hwq *hwq = &nq->hwq; u32 sw_cons; /* Prefetch the NQ element */ sw_cons = HWQ_CMP(hwq->cons, hwq); prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL)); /* Fan out to CPU affinitized kthreads? */ tasklet_schedule(&nq->nq_tasklet); return IRQ_HANDLED; } void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill) { tasklet_disable(&nq->nq_tasklet); /* Mask h/w interrupt */ bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, false); /* Sync with last running IRQ handler */ synchronize_irq(nq->msix_vec); if (kill) tasklet_kill(&nq->nq_tasklet); if (nq->requested) { irq_set_affinity_hint(nq->msix_vec, NULL); free_irq(nq->msix_vec, nq); nq->requested = false; } } void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq) { if (nq->cqn_wq) { destroy_workqueue(nq->cqn_wq); nq->cqn_wq = NULL; } /* Make sure the HW is stopped! */ bnxt_qplib_nq_stop_irq(nq, true); if (nq->nq_db.reg.bar_reg) { iounmap(nq->nq_db.reg.bar_reg); nq->nq_db.reg.bar_reg = NULL; } nq->cqn_handler = NULL; nq->srqn_handler = NULL; nq->msix_vec = 0; } int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx, int msix_vector, bool need_init) { int rc; if (nq->requested) return -EFAULT; nq->msix_vec = msix_vector; if (need_init) tasklet_setup(&nq->nq_tasklet, bnxt_qplib_service_nq); else tasklet_enable(&nq->nq_tasklet); snprintf(nq->name, sizeof(nq->name), "bnxt_qplib_nq-%d", nq_indx); rc = request_irq(nq->msix_vec, bnxt_qplib_nq_irq, 0, nq->name, nq); if (rc) return rc; cpumask_clear(&nq->mask); cpumask_set_cpu(nq_indx, &nq->mask); rc = irq_set_affinity_hint(nq->msix_vec, &nq->mask); if (rc) { dev_warn(&nq->pdev->dev, "set affinity failed; vector: %d nq_idx: %d\n", nq->msix_vec, nq_indx); } nq->requested = true; bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true); return rc; } static int bnxt_qplib_map_nq_db(struct bnxt_qplib_nq *nq, u32 reg_offt) { resource_size_t reg_base; struct bnxt_qplib_nq_db *nq_db; struct pci_dev *pdev; int rc = 0; pdev = nq->pdev; nq_db = &nq->nq_db; nq_db->reg.bar_id = NQ_CONS_PCI_BAR_REGION; nq_db->reg.bar_base = pci_resource_start(pdev, nq_db->reg.bar_id); if (!nq_db->reg.bar_base) { dev_err(&pdev->dev, "QPLIB: NQ BAR region %d resc start is 0!", nq_db->reg.bar_id); rc = -ENOMEM; goto fail; } reg_base = nq_db->reg.bar_base + reg_offt; /* Unconditionally map 8 bytes to support 57500 series */ nq_db->reg.len = 8; nq_db->reg.bar_reg = ioremap(reg_base, nq_db->reg.len); if (!nq_db->reg.bar_reg) { dev_err(&pdev->dev, "QPLIB: NQ BAR region %d mapping failed", nq_db->reg.bar_id); rc = -ENOMEM; goto fail; } nq_db->dbinfo.db = nq_db->reg.bar_reg; nq_db->dbinfo.hwq = &nq->hwq; nq_db->dbinfo.xid = nq->ring_id; fail: return rc; } int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq, int nq_idx, int msix_vector, int bar_reg_offset, cqn_handler_t cqn_handler, srqn_handler_t srqn_handler) { int rc = -1; nq->pdev = pdev; nq->cqn_handler = cqn_handler; nq->srqn_handler = srqn_handler; /* Have a task to schedule CQ notifiers in post send case */ nq->cqn_wq = create_singlethread_workqueue("bnxt_qplib_nq"); if (!nq->cqn_wq) return -ENOMEM; rc = bnxt_qplib_map_nq_db(nq, bar_reg_offset); if (rc) goto fail; rc = bnxt_qplib_nq_start_irq(nq, nq_idx, msix_vector, true); if (rc) { dev_err(&nq->pdev->dev, "Failed to request irq for nq-idx %d\n", nq_idx); goto fail; } return 0; fail: bnxt_qplib_disable_nq(nq); return rc; } void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq) { if (nq->hwq.max_elements) { bnxt_qplib_free_hwq(nq->res, &nq->hwq); nq->hwq.max_elements = 0; } } int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq) { struct bnxt_qplib_hwq_attr hwq_attr = {}; struct bnxt_qplib_sg_info sginfo = {}; nq->pdev = res->pdev; nq->res = res; if (!nq->hwq.max_elements || nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT) nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT; sginfo.pgsize = PAGE_SIZE; sginfo.pgshft = PAGE_SHIFT; hwq_attr.res = res; hwq_attr.sginfo = &sginfo; hwq_attr.depth = nq->hwq.max_elements; hwq_attr.stride = sizeof(struct nq_base); hwq_attr.type = bnxt_qplib_get_hwq_type(nq->res); if (bnxt_qplib_alloc_init_hwq(&nq->hwq, &hwq_attr)) { dev_err(&nq->pdev->dev, "FP NQ allocation failed"); return -ENOMEM; } nq->budget = 8; return 0; } /* SRQ */ void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res, struct bnxt_qplib_srq *srq) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct cmdq_destroy_srq req; struct creq_destroy_srq_resp resp; u16 cmd_flags = 0; int rc; RCFW_CMD_PREP(req, DESTROY_SRQ, cmd_flags); /* Configure the request */ req.srq_cid = cpu_to_le32(srq->id); rc = bnxt_qplib_rcfw_send_message(rcfw, (struct cmdq_base *)&req, (struct creq_base *)&resp, NULL, 0); kfree(srq->swq); if (rc) return; bnxt_qplib_free_hwq(res, &srq->hwq); } int bnxt_qplib_create_srq(struct bnxt_qplib_res *res, struct bnxt_qplib_srq *srq) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct bnxt_qplib_hwq_attr hwq_attr = {}; struct creq_create_srq_resp resp; struct cmdq_create_srq req; struct bnxt_qplib_pbl *pbl; u16 cmd_flags = 0; u16 pg_sz_lvl; int rc, idx; hwq_attr.res = res; hwq_attr.sginfo = &srq->sg_info; hwq_attr.depth = srq->max_wqe; hwq_attr.stride = srq->wqe_size; hwq_attr.type = HWQ_TYPE_QUEUE; rc = bnxt_qplib_alloc_init_hwq(&srq->hwq, &hwq_attr); if (rc) goto exit; srq->swq = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq), GFP_KERNEL); if (!srq->swq) { rc = -ENOMEM; goto fail; } RCFW_CMD_PREP(req, CREATE_SRQ, cmd_flags); /* Configure the request */ req.dpi = cpu_to_le32(srq->dpi->dpi); req.srq_handle = cpu_to_le64((uintptr_t)srq); req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements); pbl = &srq->hwq.pbl[PBL_LVL_0]; pg_sz_lvl = ((u16)bnxt_qplib_base_pg_size(&srq->hwq) << CMDQ_CREATE_SRQ_PG_SIZE_SFT); pg_sz_lvl |= (srq->hwq.level & CMDQ_CREATE_SRQ_LVL_MASK) << CMDQ_CREATE_SRQ_LVL_SFT; req.pg_size_lvl = cpu_to_le16(pg_sz_lvl); req.pbl = cpu_to_le64(pbl->pg_map_arr[0]); req.pd_id = cpu_to_le32(srq->pd->id); req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id); rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, NULL, 0); if (rc) goto fail; spin_lock_init(&srq->lock); srq->start_idx = 0; srq->last_idx = srq->hwq.max_elements - 1; for (idx = 0; idx < srq->hwq.max_elements; idx++) srq->swq[idx].next_idx = idx + 1; srq->swq[srq->last_idx].next_idx = -1; srq->id = le32_to_cpu(resp.xid); srq->dbinfo.hwq = &srq->hwq; srq->dbinfo.xid = srq->id; srq->dbinfo.db = srq->dpi->dbr; srq->dbinfo.max_slot = 1; srq->dbinfo.priv_db = res->dpi_tbl.dbr_bar_reg_iomem; if (srq->threshold) bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA); srq->arm_req = false; return 0; fail: bnxt_qplib_free_hwq(res, &srq->hwq); kfree(srq->swq); exit: return rc; } int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res, struct bnxt_qplib_srq *srq) { struct bnxt_qplib_hwq *srq_hwq = &srq->hwq; u32 sw_prod, sw_cons, count = 0; sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq); sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq); count = sw_prod > sw_cons ? sw_prod - sw_cons : srq_hwq->max_elements - sw_cons + sw_prod; if (count > srq->threshold) { srq->arm_req = false; bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold); } else { /* Deferred arming */ srq->arm_req = true; } return 0; } int bnxt_qplib_query_srq(struct bnxt_qplib_res *res, struct bnxt_qplib_srq *srq) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct cmdq_query_srq req; struct creq_query_srq_resp resp; struct bnxt_qplib_rcfw_sbuf *sbuf; struct creq_query_srq_resp_sb *sb; u16 cmd_flags = 0; int rc = 0; RCFW_CMD_PREP(req, QUERY_SRQ, cmd_flags); /* Configure the request */ sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb)); if (!sbuf) return -ENOMEM; req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS; req.srq_cid = cpu_to_le32(srq->id); sb = sbuf->sb; rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, (void *)sbuf, 0); srq->threshold = le16_to_cpu(sb->srq_limit); bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf); return rc; } int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq, struct bnxt_qplib_swqe *wqe) { struct bnxt_qplib_hwq *srq_hwq = &srq->hwq; struct rq_wqe *srqe; struct sq_sge *hw_sge; u32 sw_prod, sw_cons, count = 0; int i, rc = 0, next; spin_lock(&srq_hwq->lock); if (srq->start_idx == srq->last_idx) { dev_err(&srq_hwq->pdev->dev, "FP: SRQ (0x%x) is full!\n", srq->id); rc = -EINVAL; spin_unlock(&srq_hwq->lock); goto done; } next = srq->start_idx; srq->start_idx = srq->swq[next].next_idx; spin_unlock(&srq_hwq->lock); sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq); srqe = bnxt_qplib_get_qe(srq_hwq, sw_prod, NULL); memset(srqe, 0, srq->wqe_size); /* Calculate wqe_size16 and data_len */ for (i = 0, hw_sge = (struct sq_sge *)srqe->data; i < wqe->num_sge; i++, hw_sge++) { hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr); hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey); hw_sge->size = cpu_to_le32(wqe->sg_list[i].size); } srqe->wqe_type = wqe->type; srqe->flags = wqe->flags; srqe->wqe_size = wqe->num_sge + ((offsetof(typeof(*srqe), data) + 15) >> 4); srqe->wr_id[0] = cpu_to_le32((u32)next); srq->swq[next].wr_id = wqe->wr_id; srq_hwq->prod++; spin_lock(&srq_hwq->lock); sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq); /* retaining srq_hwq->cons for this logic * actually the lock is only required to * read srq_hwq->cons. */ sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq); count = sw_prod > sw_cons ? sw_prod - sw_cons : srq_hwq->max_elements - sw_cons + sw_prod; spin_unlock(&srq_hwq->lock); /* Ring DB */ bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ); if (srq->arm_req == true && count > srq->threshold) { srq->arm_req = false; bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold); } done: return rc; } /* QP */ static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que) { int rc = 0; int indx; que->swq = kcalloc(que->max_wqe, sizeof(*que->swq), GFP_KERNEL); if (!que->swq) { rc = -ENOMEM; goto out; } que->swq_start = 0; que->swq_last = que->max_wqe - 1; for (indx = 0; indx < que->max_wqe; indx++) que->swq[indx].next_idx = indx + 1; que->swq[que->swq_last].next_idx = 0; /* Make it circular */ que->swq_last = 0; out: return rc; } int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) { struct bnxt_qplib_hwq_attr hwq_attr = {}; struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct bnxt_qplib_q *sq = &qp->sq; struct bnxt_qplib_q *rq = &qp->rq; struct creq_create_qp1_resp resp; struct cmdq_create_qp1 req; struct bnxt_qplib_pbl *pbl; u16 cmd_flags = 0; u32 qp_flags = 0; u8 pg_sz_lvl; u32 tbl_indx; int rc; RCFW_CMD_PREP(req, CREATE_QP1, cmd_flags); /* General */ req.type = qp->type; req.dpi = cpu_to_le32(qp->dpi->dpi); req.qp_handle = cpu_to_le64(qp->qp_handle); /* SQ */ hwq_attr.res = res; hwq_attr.sginfo = &sq->sg_info; hwq_attr.stride = sizeof(struct sq_sge); hwq_attr.depth = bnxt_qplib_get_depth(sq); hwq_attr.type = HWQ_TYPE_QUEUE; rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr); if (rc) goto exit; rc = bnxt_qplib_alloc_init_swq(sq); if (rc) goto fail_sq; req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)); pbl = &sq->hwq.pbl[PBL_LVL_0]; req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]); pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) << CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT); pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK); req.sq_pg_size_sq_lvl = pg_sz_lvl; req.sq_fwo_sq_sge = cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) << CMDQ_CREATE_QP1_SQ_SGE_SFT); req.scq_cid = cpu_to_le32(qp->scq->id); /* RQ */ if (rq->max_wqe) { hwq_attr.res = res; hwq_attr.sginfo = &rq->sg_info; hwq_attr.stride = sizeof(struct sq_sge); hwq_attr.depth = bnxt_qplib_get_depth(rq); hwq_attr.type = HWQ_TYPE_QUEUE; rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr); if (rc) goto sq_swq; rc = bnxt_qplib_alloc_init_swq(rq); if (rc) goto fail_rq; req.rq_size = cpu_to_le32(rq->max_wqe); pbl = &rq->hwq.pbl[PBL_LVL_0]; req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]); pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) << CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT); pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK); req.rq_pg_size_rq_lvl = pg_sz_lvl; req.rq_fwo_rq_sge = cpu_to_le16((rq->max_sge & CMDQ_CREATE_QP1_RQ_SGE_MASK) << CMDQ_CREATE_QP1_RQ_SGE_SFT); } req.rcq_cid = cpu_to_le32(qp->rcq->id); /* Header buffer - allow hdr_buf pass in */ rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp); if (rc) { rc = -ENOMEM; goto rq_rwq; } qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE; req.qp_flags = cpu_to_le32(qp_flags); req.pd_id = cpu_to_le32(qp->pd->id); rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, NULL, 0); if (rc) goto fail; qp->id = le32_to_cpu(resp.xid); qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET; qp->cctx = res->cctx; sq->dbinfo.hwq = &sq->hwq; sq->dbinfo.xid = qp->id; sq->dbinfo.db = qp->dpi->dbr; sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode); if (rq->max_wqe) { rq->dbinfo.hwq = &rq->hwq; rq->dbinfo.xid = qp->id; rq->dbinfo.db = qp->dpi->dbr; rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size); } tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw); rcfw->qp_tbl[tbl_indx].qp_id = qp->id; rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp; return 0; fail: bnxt_qplib_free_qp_hdr_buf(res, qp); rq_rwq: kfree(rq->swq); fail_rq: bnxt_qplib_free_hwq(res, &rq->hwq); sq_swq: kfree(sq->swq); fail_sq: bnxt_qplib_free_hwq(res, &sq->hwq); exit: return rc; } static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size) { struct bnxt_qplib_hwq *hwq; struct bnxt_qplib_q *sq; u64 fpsne, psn_pg; u16 indx_pad = 0; sq = &qp->sq; hwq = &sq->hwq; /* First psn entry */ fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg); if (!IS_ALIGNED(fpsne, PAGE_SIZE)) indx_pad = (fpsne & ~PAGE_MASK) / size; hwq->pad_pgofft = indx_pad; hwq->pad_pg = (u64 *)psn_pg; hwq->pad_stride = size; } int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct bnxt_qplib_hwq_attr hwq_attr = {}; struct bnxt_qplib_sg_info sginfo = {}; struct bnxt_qplib_q *sq = &qp->sq; struct bnxt_qplib_q *rq = &qp->rq; struct creq_create_qp_resp resp; int rc, req_size, psn_sz = 0; struct bnxt_qplib_hwq *xrrq; struct bnxt_qplib_pbl *pbl; struct cmdq_create_qp req; u16 cmd_flags = 0; u32 qp_flags = 0; u8 pg_sz_lvl; u32 tbl_indx; u16 nsge; RCFW_CMD_PREP(req, CREATE_QP, cmd_flags); /* General */ req.type = qp->type; req.dpi = cpu_to_le32(qp->dpi->dpi); req.qp_handle = cpu_to_le64(qp->qp_handle); /* SQ */ if (qp->type == CMDQ_CREATE_QP_TYPE_RC) { psn_sz = bnxt_qplib_is_chip_gen_p5(res->cctx) ? sizeof(struct sq_psn_search_ext) : sizeof(struct sq_psn_search); } hwq_attr.res = res; hwq_attr.sginfo = &sq->sg_info; hwq_attr.stride = sizeof(struct sq_sge); hwq_attr.depth = bnxt_qplib_get_depth(sq); hwq_attr.aux_stride = psn_sz; hwq_attr.aux_depth = bnxt_qplib_set_sq_size(sq, qp->wqe_mode); hwq_attr.type = HWQ_TYPE_QUEUE; rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr); if (rc) goto exit; rc = bnxt_qplib_alloc_init_swq(sq); if (rc) goto fail_sq; if (psn_sz) bnxt_qplib_init_psn_ptr(qp, psn_sz); req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)); pbl = &sq->hwq.pbl[PBL_LVL_0]; req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]); pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) << CMDQ_CREATE_QP_SQ_PG_SIZE_SFT); pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK); req.sq_pg_size_sq_lvl = pg_sz_lvl; req.sq_fwo_sq_sge = cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) << CMDQ_CREATE_QP_SQ_SGE_SFT) | 0); req.scq_cid = cpu_to_le32(qp->scq->id); /* RQ */ if (!qp->srq) { hwq_attr.res = res; hwq_attr.sginfo = &rq->sg_info; hwq_attr.stride = sizeof(struct sq_sge); hwq_attr.depth = bnxt_qplib_get_depth(rq); hwq_attr.aux_stride = 0; hwq_attr.aux_depth = 0; hwq_attr.type = HWQ_TYPE_QUEUE; rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr); if (rc) goto sq_swq; rc = bnxt_qplib_alloc_init_swq(rq); if (rc) goto fail_rq; req.rq_size = cpu_to_le32(rq->max_wqe); pbl = &rq->hwq.pbl[PBL_LVL_0]; req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]); pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) << CMDQ_CREATE_QP_RQ_PG_SIZE_SFT); pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK); req.rq_pg_size_rq_lvl = pg_sz_lvl; nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ? 6 : rq->max_sge; req.rq_fwo_rq_sge = cpu_to_le16(((nsge & CMDQ_CREATE_QP_RQ_SGE_MASK) << CMDQ_CREATE_QP_RQ_SGE_SFT) | 0); } else { /* SRQ */ qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED; req.srq_cid = cpu_to_le32(qp->srq->id); } req.rcq_cid = cpu_to_le32(qp->rcq->id); qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE; qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED; if (qp->sig_type) qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION; if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE) qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED; if (_is_ext_stats_supported(res->dattr->dev_cap_flags) && !res->is_vf) qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_EXT_STATS_ENABLED; req.qp_flags = cpu_to_le32(qp_flags); /* ORRQ and IRRQ */ if (psn_sz) { xrrq = &qp->orrq; xrrq->max_elements = ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic); req_size = xrrq->max_elements * BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1; req_size &= ~(PAGE_SIZE - 1); sginfo.pgsize = req_size; sginfo.pgshft = PAGE_SHIFT; hwq_attr.res = res; hwq_attr.sginfo = &sginfo; hwq_attr.depth = xrrq->max_elements; hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE; hwq_attr.aux_stride = 0; hwq_attr.aux_depth = 0; hwq_attr.type = HWQ_TYPE_CTX; rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr); if (rc) goto rq_swq; pbl = &xrrq->pbl[PBL_LVL_0]; req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]); xrrq = &qp->irrq; xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS( qp->max_dest_rd_atomic); req_size = xrrq->max_elements * BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1; req_size &= ~(PAGE_SIZE - 1); sginfo.pgsize = req_size; hwq_attr.depth = xrrq->max_elements; hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE; rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr); if (rc) goto fail_orrq; pbl = &xrrq->pbl[PBL_LVL_0]; req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]); } req.pd_id = cpu_to_le32(qp->pd->id); rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, NULL, 0); if (rc) goto fail; qp->id = le32_to_cpu(resp.xid); qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET; INIT_LIST_HEAD(&qp->sq_flush); INIT_LIST_HEAD(&qp->rq_flush); qp->cctx = res->cctx; sq->dbinfo.hwq = &sq->hwq; sq->dbinfo.xid = qp->id; sq->dbinfo.db = qp->dpi->dbr; sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode); if (rq->max_wqe) { rq->dbinfo.hwq = &rq->hwq; rq->dbinfo.xid = qp->id; rq->dbinfo.db = qp->dpi->dbr; rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size); } tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw); rcfw->qp_tbl[tbl_indx].qp_id = qp->id; rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp; return 0; fail: bnxt_qplib_free_hwq(res, &qp->irrq); fail_orrq: bnxt_qplib_free_hwq(res, &qp->orrq); rq_swq: kfree(rq->swq); fail_rq: bnxt_qplib_free_hwq(res, &rq->hwq); sq_swq: kfree(sq->swq); fail_sq: bnxt_qplib_free_hwq(res, &sq->hwq); exit: return rc; } static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp) { switch (qp->state) { case CMDQ_MODIFY_QP_NEW_STATE_RTR: /* INIT->RTR, configure the path_mtu to the default * 2048 if not being requested */ if (!(qp->modify_flags & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) { qp->modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU; qp->path_mtu = CMDQ_MODIFY_QP_PATH_MTU_MTU_2048; } qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID; /* Bono FW require the max_dest_rd_atomic to be >= 1 */ if (qp->max_dest_rd_atomic < 1) qp->max_dest_rd_atomic = 1; qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC; /* Bono FW 20.6.5 requires SGID_INDEX configuration */ if (!(qp->modify_flags & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) { qp->modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX; qp->ah.sgid_index = 0; } break; default: break; } } static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp) { switch (qp->state) { case CMDQ_MODIFY_QP_NEW_STATE_RTS: /* Bono FW requires the max_rd_atomic to be >= 1 */ if (qp->max_rd_atomic < 1) qp->max_rd_atomic = 1; /* Bono FW does not allow PKEY_INDEX, * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT, * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN, * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID * modification */ qp->modify_flags &= ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY | CMDQ_MODIFY_QP_MODIFY_MASK_DGID | CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL | CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX | CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT | CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS | CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC | CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU | CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN | CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER | CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC | CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID); break; default: break; } } static void __filter_modify_flags(struct bnxt_qplib_qp *qp) { switch (qp->cur_qp_state) { case CMDQ_MODIFY_QP_NEW_STATE_RESET: break; case CMDQ_MODIFY_QP_NEW_STATE_INIT: __modify_flags_from_init_state(qp); break; case CMDQ_MODIFY_QP_NEW_STATE_RTR: __modify_flags_from_rtr_state(qp); break; case CMDQ_MODIFY_QP_NEW_STATE_RTS: break; case CMDQ_MODIFY_QP_NEW_STATE_SQD: break; case CMDQ_MODIFY_QP_NEW_STATE_SQE: break; case CMDQ_MODIFY_QP_NEW_STATE_ERR: break; default: break; } } int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct cmdq_modify_qp req; struct creq_modify_qp_resp resp; u16 cmd_flags = 0; u32 temp32[4]; u32 bmask; int rc; RCFW_CMD_PREP(req, MODIFY_QP, cmd_flags); /* Filter out the qp_attr_mask based on the state->new transition */ __filter_modify_flags(qp); bmask = qp->modify_flags; req.modify_mask = cpu_to_le32(qp->modify_flags); req.qp_cid = cpu_to_le32(qp->id); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) { req.network_type_en_sqd_async_notify_new_state = (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) | (qp->en_sqd_async_notify ? CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0); } req.network_type_en_sqd_async_notify_new_state |= qp->nw_type; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS) req.access = qp->access; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY) req.pkey = cpu_to_le16(IB_DEFAULT_PKEY_FULL); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY) req.qkey = cpu_to_le32(qp->qkey); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) { memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid)); req.dgid[0] = cpu_to_le32(temp32[0]); req.dgid[1] = cpu_to_le32(temp32[1]); req.dgid[2] = cpu_to_le32(temp32[2]); req.dgid[3] = cpu_to_le32(temp32[3]); } if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL) req.flow_label = cpu_to_le32(qp->ah.flow_label); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX) req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id [qp->ah.sgid_index]); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT) req.hop_limit = qp->ah.hop_limit; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS) req.traffic_class = qp->ah.traffic_class; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC) memcpy(req.dest_mac, qp->ah.dmac, 6); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU) req.path_mtu = qp->path_mtu; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT) req.timeout = qp->timeout; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT) req.retry_cnt = qp->retry_cnt; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY) req.rnr_retry = qp->rnr_retry; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER) req.min_rnr_timer = qp->min_rnr_timer; if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN) req.rq_psn = cpu_to_le32(qp->rq.psn); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN) req.sq_psn = cpu_to_le32(qp->sq.psn); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC) req.max_rd_atomic = ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC) req.max_dest_rd_atomic = IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic); req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements); req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements); req.sq_sge = cpu_to_le16(qp->sq.max_sge); req.rq_sge = cpu_to_le16(qp->rq.max_sge); req.max_inline_data = cpu_to_le32(qp->max_inline_data); if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID) req.dest_qp_id = cpu_to_le32(qp->dest_qpn); req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(qp->vlan_id); rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, NULL, 0); if (rc) return rc; qp->cur_qp_state = qp->state; return 0; } int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct cmdq_query_qp req; struct creq_query_qp_resp resp; struct bnxt_qplib_rcfw_sbuf *sbuf; struct creq_query_qp_resp_sb *sb; u16 cmd_flags = 0; u32 temp32[4]; int i, rc = 0; RCFW_CMD_PREP(req, QUERY_QP, cmd_flags); sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb)); if (!sbuf) return -ENOMEM; sb = sbuf->sb; req.qp_cid = cpu_to_le32(qp->id); req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS; rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, (void *)sbuf, 0); if (rc) goto bail; /* Extract the context from the side buffer */ qp->state = sb->en_sqd_async_notify_state & CREQ_QUERY_QP_RESP_SB_STATE_MASK; qp->en_sqd_async_notify = sb->en_sqd_async_notify_state & CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY ? true : false; qp->access = sb->access; qp->pkey_index = le16_to_cpu(sb->pkey); qp->qkey = le32_to_cpu(sb->qkey); temp32[0] = le32_to_cpu(sb->dgid[0]); temp32[1] = le32_to_cpu(sb->dgid[1]); temp32[2] = le32_to_cpu(sb->dgid[2]); temp32[3] = le32_to_cpu(sb->dgid[3]); memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data)); qp->ah.flow_label = le32_to_cpu(sb->flow_label); qp->ah.sgid_index = 0; for (i = 0; i < res->sgid_tbl.max; i++) { if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) { qp->ah.sgid_index = i; break; } } if (i == res->sgid_tbl.max) dev_warn(&res->pdev->dev, "SGID not found??\n"); qp->ah.hop_limit = sb->hop_limit; qp->ah.traffic_class = sb->traffic_class; memcpy(qp->ah.dmac, sb->dest_mac, 6); qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) & CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >> CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT; qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) & CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >> CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT; qp->timeout = sb->timeout; qp->retry_cnt = sb->retry_cnt; qp->rnr_retry = sb->rnr_retry; qp->min_rnr_timer = sb->min_rnr_timer; qp->rq.psn = le32_to_cpu(sb->rq_psn); qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic); qp->sq.psn = le32_to_cpu(sb->sq_psn); qp->max_dest_rd_atomic = IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic); qp->sq.max_wqe = qp->sq.hwq.max_elements; qp->rq.max_wqe = qp->rq.hwq.max_elements; qp->sq.max_sge = le16_to_cpu(sb->sq_sge); qp->rq.max_sge = le16_to_cpu(sb->rq_sge); qp->max_inline_data = le32_to_cpu(sb->max_inline_data); qp->dest_qpn = le32_to_cpu(sb->dest_qp_id); memcpy(qp->smac, sb->src_mac, 6); qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id); bail: bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf); return rc; } static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp) { struct bnxt_qplib_hwq *cq_hwq = &cq->hwq; struct cq_base *hw_cqe; int i; for (i = 0; i < cq_hwq->max_elements; i++) { hw_cqe = bnxt_qplib_get_qe(cq_hwq, i, NULL); if (!CQE_CMP_VALID(hw_cqe, i, cq_hwq->max_elements)) continue; /* * The valid test of the entry must be done first before * reading any further. */ dma_rmb(); switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) { case CQ_BASE_CQE_TYPE_REQ: case CQ_BASE_CQE_TYPE_TERMINAL: { struct cq_req *cqe = (struct cq_req *)hw_cqe; if (qp == le64_to_cpu(cqe->qp_handle)) cqe->qp_handle = 0; break; } case CQ_BASE_CQE_TYPE_RES_RC: case CQ_BASE_CQE_TYPE_RES_UD: case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1: { struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe; if (qp == le64_to_cpu(cqe->qp_handle)) cqe->qp_handle = 0; break; } default: break; } } } int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct cmdq_destroy_qp req; struct creq_destroy_qp_resp resp; u16 cmd_flags = 0; u32 tbl_indx; int rc; tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw); rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID; rcfw->qp_tbl[tbl_indx].qp_handle = NULL; RCFW_CMD_PREP(req, DESTROY_QP, cmd_flags); req.qp_cid = cpu_to_le32(qp->id); rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, NULL, 0); if (rc) { rcfw->qp_tbl[tbl_indx].qp_id = qp->id; rcfw->qp_tbl[tbl_indx].qp_handle = qp; return rc; } return 0; } void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) { bnxt_qplib_free_qp_hdr_buf(res, qp); bnxt_qplib_free_hwq(res, &qp->sq.hwq); kfree(qp->sq.swq); bnxt_qplib_free_hwq(res, &qp->rq.hwq); kfree(qp->rq.swq); if (qp->irrq.max_elements) bnxt_qplib_free_hwq(res, &qp->irrq); if (qp->orrq.max_elements) bnxt_qplib_free_hwq(res, &qp->orrq); } void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp, struct bnxt_qplib_sge *sge) { struct bnxt_qplib_q *sq = &qp->sq; u32 sw_prod; memset(sge, 0, sizeof(*sge)); if (qp->sq_hdr_buf) { sw_prod = sq->swq_start; sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map + sw_prod * qp->sq_hdr_buf_size); sge->lkey = 0xFFFFFFFF; sge->size = qp->sq_hdr_buf_size; return qp->sq_hdr_buf + sw_prod * sge->size; } return NULL; } u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp) { struct bnxt_qplib_q *rq = &qp->rq; return rq->swq_start; } dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index) { return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size); } void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp, struct bnxt_qplib_sge *sge) { struct bnxt_qplib_q *rq = &qp->rq; u32 sw_prod; memset(sge, 0, sizeof(*sge)); if (qp->rq_hdr_buf) { sw_prod = rq->swq_start; sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map + sw_prod * qp->rq_hdr_buf_size); sge->lkey = 0xFFFFFFFF; sge->size = qp->rq_hdr_buf_size; return qp->rq_hdr_buf + sw_prod * sge->size; } return NULL; } static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp, struct bnxt_qplib_swqe *wqe, struct bnxt_qplib_swq *swq) { struct sq_psn_search_ext *psns_ext; struct sq_psn_search *psns; u32 flg_npsn; u32 op_spsn; if (!swq->psn_search) return; psns = swq->psn_search; psns_ext = swq->psn_ext; op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) & SQ_PSN_SEARCH_START_PSN_MASK); op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) & SQ_PSN_SEARCH_OPCODE_MASK); flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) & SQ_PSN_SEARCH_NEXT_PSN_MASK); if (bnxt_qplib_is_chip_gen_p5(qp->cctx)) { psns_ext->opcode_start_psn = cpu_to_le32(op_spsn); psns_ext->flags_next_psn = cpu_to_le32(flg_npsn); psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx); } else { psns->opcode_start_psn = cpu_to_le32(op_spsn); psns->flags_next_psn = cpu_to_le32(flg_npsn); } } static int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp, struct bnxt_qplib_swqe *wqe, u16 *idx) { struct bnxt_qplib_hwq *hwq; int len, t_len, offt; bool pull_dst = true; void *il_dst = NULL; void *il_src = NULL; int t_cplen, cplen; int indx; hwq = &qp->sq.hwq; t_len = 0; for (indx = 0; indx < wqe->num_sge; indx++) { len = wqe->sg_list[indx].size; il_src = (void *)wqe->sg_list[indx].addr; t_len += len; if (t_len > qp->max_inline_data) goto bad; while (len) { if (pull_dst) { pull_dst = false; il_dst = bnxt_qplib_get_prod_qe(hwq, *idx); (*idx)++; t_cplen = 0; offt = 0; } cplen = min_t(int, len, sizeof(struct sq_sge)); cplen = min_t(int, cplen, (sizeof(struct sq_sge) - offt)); memcpy(il_dst, il_src, cplen); t_cplen += cplen; il_src += cplen; il_dst += cplen; offt += cplen; len -= cplen; if (t_cplen == sizeof(struct sq_sge)) pull_dst = true; } } return t_len; bad: return -ENOMEM; } static u32 bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq, struct bnxt_qplib_sge *ssge, u16 nsge, u16 *idx) { struct sq_sge *dsge; int indx, len = 0; for (indx = 0; indx < nsge; indx++, (*idx)++) { dsge = bnxt_qplib_get_prod_qe(hwq, *idx); dsge->va_or_pa = cpu_to_le64(ssge[indx].addr); dsge->l_key = cpu_to_le32(ssge[indx].lkey); dsge->size = cpu_to_le32(ssge[indx].size); len += ssge[indx].size; } return len; } static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp, struct bnxt_qplib_swqe *wqe, u16 *wqe_sz, u16 *qdf, u8 mode) { u32 ilsize, bytes; u16 nsge; u16 slot; nsge = wqe->num_sge; /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */ bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge); if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) { ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data); bytes = ALIGN(ilsize, sizeof(struct sq_sge)); bytes += sizeof(struct sq_send_hdr); } *qdf = __xlate_qfd(qp->sq.q_full_delta, bytes); slot = bytes >> 4; *wqe_sz = slot; if (mode == BNXT_QPLIB_WQE_MODE_STATIC) slot = 8; return slot; } static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_q *sq, struct bnxt_qplib_swq *swq) { struct bnxt_qplib_hwq *hwq; u32 pg_num, pg_indx; void *buff; u32 tail; hwq = &sq->hwq; if (!hwq->pad_pg) return; tail = swq->slot_idx / sq->dbinfo.max_slot; pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride); pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride); buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride); swq->psn_ext = buff; swq->psn_search = buff; } void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp) { struct bnxt_qplib_q *sq = &qp->sq; bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ); } int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp, struct bnxt_qplib_swqe *wqe) { struct bnxt_qplib_nq_work *nq_work = NULL; int i, rc = 0, data_len = 0, pkt_num = 0; struct bnxt_qplib_q *sq = &qp->sq; struct bnxt_qplib_hwq *hwq; struct bnxt_qplib_swq *swq; bool sch_handler = false; u16 wqe_sz, qdf = 0; void *base_hdr; void *ext_hdr; __le32 temp32; u32 wqe_idx; u32 slots; u16 idx; hwq = &sq->hwq; if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS && qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) { dev_err(&hwq->pdev->dev, "QPLIB: FP: QP (0x%x) is in the 0x%x state", qp->id, qp->state); rc = -EINVAL; goto done; } slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode); if (bnxt_qplib_queue_full(sq, slots + qdf)) { dev_err(&hwq->pdev->dev, "prod = %#x cons = %#x qdepth = %#x delta = %#x\n", hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta); rc = -ENOMEM; goto done; } swq = bnxt_qplib_get_swqe(sq, &wqe_idx); bnxt_qplib_pull_psn_buff(sq, swq); idx = 0; swq->slot_idx = hwq->prod; swq->slots = slots; swq->wr_id = wqe->wr_id; swq->type = wqe->type; swq->flags = wqe->flags; swq->start_psn = sq->psn & BTH_PSN_MASK; if (qp->sig_type) swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP; if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) { sch_handler = true; dev_dbg(&hwq->pdev->dev, "%s Error QP. Scheduling for poll_cq\n", __func__); goto queue_err; } base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++); ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++); memset(base_hdr, 0, sizeof(struct sq_sge)); memset(ext_hdr, 0, sizeof(struct sq_sge)); if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) /* Copy the inline data */ data_len = bnxt_qplib_put_inline(qp, wqe, &idx); else data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx); if (data_len < 0) goto queue_err; /* Specifics */ switch (wqe->type) { case BNXT_QPLIB_SWQE_TYPE_SEND: if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) { struct sq_send_raweth_qp1_hdr *sqe = base_hdr; struct sq_raw_ext_hdr *ext_sqe = ext_hdr; /* Assemble info for Raw Ethertype QPs */ sqe->wqe_type = wqe->type; sqe->flags = wqe->flags; sqe->wqe_size = wqe_sz; sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action); sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags); sqe->length = cpu_to_le32(data_len); ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta & SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) << SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT); break; } fallthrough; case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM: case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV: { struct sq_ud_ext_hdr *ext_sqe = ext_hdr; struct sq_send_hdr *sqe = base_hdr; sqe->wqe_type = wqe->type; sqe->flags = wqe->flags; sqe->wqe_size = wqe_sz; sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key); if (qp->type == CMDQ_CREATE_QP_TYPE_UD || qp->type == CMDQ_CREATE_QP_TYPE_GSI) { sqe->q_key = cpu_to_le32(wqe->send.q_key); sqe->length = cpu_to_le32(data_len); sq->psn = (sq->psn + 1) & BTH_PSN_MASK; ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp & SQ_SEND_DST_QP_MASK); ext_sqe->avid = cpu_to_le32(wqe->send.avid & SQ_SEND_AVID_MASK); } else { sqe->length = cpu_to_le32(data_len); if (qp->mtu) pkt_num = (data_len + qp->mtu - 1) / qp->mtu; if (!pkt_num) pkt_num = 1; sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK; } break; } case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE: case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM: case BNXT_QPLIB_SWQE_TYPE_RDMA_READ: { struct sq_rdma_ext_hdr *ext_sqe = ext_hdr; struct sq_rdma_hdr *sqe = base_hdr; sqe->wqe_type = wqe->type; sqe->flags = wqe->flags; sqe->wqe_size = wqe_sz; sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key); sqe->length = cpu_to_le32((u32)data_len); ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va); ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key); if (qp->mtu) pkt_num = (data_len + qp->mtu - 1) / qp->mtu; if (!pkt_num) pkt_num = 1; sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK; break; } case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP: case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD: { struct sq_atomic_ext_hdr *ext_sqe = ext_hdr; struct sq_atomic_hdr *sqe = base_hdr; sqe->wqe_type = wqe->type; sqe->flags = wqe->flags; sqe->remote_key = cpu_to_le32(wqe->atomic.r_key); sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va); ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data); ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data); if (qp->mtu) pkt_num = (data_len + qp->mtu - 1) / qp->mtu; if (!pkt_num) pkt_num = 1; sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK; break; } case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV: { struct sq_localinvalidate *sqe = base_hdr; sqe->wqe_type = wqe->type; sqe->flags = wqe->flags; sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key); break; } case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR: { struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr; struct sq_fr_pmr_hdr *sqe = base_hdr; sqe->wqe_type = wqe->type; sqe->flags = wqe->flags; sqe->access_cntl = wqe->frmr.access_cntl | SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE; sqe->zero_based_page_size_log = (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) << SQ_FR_PMR_PAGE_SIZE_LOG_SFT | (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0); sqe->l_key = cpu_to_le32(wqe->frmr.l_key); temp32 = cpu_to_le32(wqe->frmr.length); memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length)); sqe->numlevels_pbl_page_size_log = ((wqe->frmr.pbl_pg_sz_log << SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) & SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) | ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) & SQ_FR_PMR_NUMLEVELS_MASK); for (i = 0; i < wqe->frmr.page_list_len; i++) wqe->frmr.pbl_ptr[i] = cpu_to_le64( wqe->frmr.page_list[i] | PTU_PTE_VALID); ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr); ext_sqe->va = cpu_to_le64(wqe->frmr.va); break; } case BNXT_QPLIB_SWQE_TYPE_BIND_MW: { struct sq_bind_ext_hdr *ext_sqe = ext_hdr; struct sq_bind_hdr *sqe = base_hdr; sqe->wqe_type = wqe->type; sqe->flags = wqe->flags; sqe->access_cntl = wqe->bind.access_cntl; sqe->mw_type_zero_based = wqe->bind.mw_type | (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0); sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key); sqe->l_key = cpu_to_le32(wqe->bind.r_key); ext_sqe->va = cpu_to_le64(wqe->bind.va); ext_sqe->length_lo = cpu_to_le32(wqe->bind.length); break; } default: /* Bad wqe, return error */ rc = -EINVAL; goto done; } swq->next_psn = sq->psn & BTH_PSN_MASK; bnxt_qplib_fill_psn_search(qp, wqe, swq); queue_err: bnxt_qplib_swq_mod_start(sq, wqe_idx); bnxt_qplib_hwq_incr_prod(hwq, swq->slots); qp->wqe_cnt++; done: if (sch_handler) { nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC); if (nq_work) { nq_work->cq = qp->scq; nq_work->nq = qp->scq->nq; INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task); queue_work(qp->scq->nq->cqn_wq, &nq_work->work); } else { dev_err(&hwq->pdev->dev, "FP: Failed to allocate SQ nq_work!\n"); rc = -ENOMEM; } } return rc; } void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp) { struct bnxt_qplib_q *rq = &qp->rq; bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ); } int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp, struct bnxt_qplib_swqe *wqe) { struct bnxt_qplib_nq_work *nq_work = NULL; struct bnxt_qplib_q *rq = &qp->rq; struct rq_wqe_hdr *base_hdr; struct rq_ext_hdr *ext_hdr; struct bnxt_qplib_hwq *hwq; struct bnxt_qplib_swq *swq; bool sch_handler = false; u16 wqe_sz, idx; u32 wqe_idx; int rc = 0; hwq = &rq->hwq; if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) { dev_err(&hwq->pdev->dev, "QPLIB: FP: QP (0x%x) is in the 0x%x state", qp->id, qp->state); rc = -EINVAL; goto done; } if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) { dev_err(&hwq->pdev->dev, "FP: QP (0x%x) RQ is full!\n", qp->id); rc = -EINVAL; goto done; } swq = bnxt_qplib_get_swqe(rq, &wqe_idx); swq->wr_id = wqe->wr_id; swq->slots = rq->dbinfo.max_slot; if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) { sch_handler = true; dev_dbg(&hwq->pdev->dev, "%s: Error QP. Scheduling for poll_cq\n", __func__); goto queue_err; } idx = 0; base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++); ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++); memset(base_hdr, 0, sizeof(struct sq_sge)); memset(ext_hdr, 0, sizeof(struct sq_sge)); wqe_sz = (sizeof(struct rq_wqe_hdr) + wqe->num_sge * sizeof(struct sq_sge)) >> 4; bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx); if (!wqe->num_sge) { struct sq_sge *sge; sge = bnxt_qplib_get_prod_qe(hwq, idx++); sge->size = 0; wqe_sz++; } base_hdr->wqe_type = wqe->type; base_hdr->flags = wqe->flags; base_hdr->wqe_size = wqe_sz; base_hdr->wr_id[0] = cpu_to_le32(wqe_idx); queue_err: bnxt_qplib_swq_mod_start(rq, wqe_idx); bnxt_qplib_hwq_incr_prod(hwq, swq->slots); done: if (sch_handler) { nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC); if (nq_work) { nq_work->cq = qp->rcq; nq_work->nq = qp->rcq->nq; INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task); queue_work(qp->rcq->nq->cqn_wq, &nq_work->work); } else { dev_err(&hwq->pdev->dev, "FP: Failed to allocate RQ nq_work!\n"); rc = -ENOMEM; } } return rc; } /* CQ */ int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct bnxt_qplib_hwq_attr hwq_attr = {}; struct creq_create_cq_resp resp; struct bnxt_qplib_pbl *pbl; struct cmdq_create_cq req; u16 cmd_flags = 0; u32 pg_sz_lvl; int rc; hwq_attr.res = res; hwq_attr.depth = cq->max_wqe; hwq_attr.stride = sizeof(struct cq_base); hwq_attr.type = HWQ_TYPE_QUEUE; hwq_attr.sginfo = &cq->sg_info; rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr); if (rc) goto exit; RCFW_CMD_PREP(req, CREATE_CQ, cmd_flags); if (!cq->dpi) { dev_err(&rcfw->pdev->dev, "FP: CREATE_CQ failed due to NULL DPI\n"); return -EINVAL; } req.dpi = cpu_to_le32(cq->dpi->dpi); req.cq_handle = cpu_to_le64(cq->cq_handle); req.cq_size = cpu_to_le32(cq->hwq.max_elements); pbl = &cq->hwq.pbl[PBL_LVL_0]; pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) << CMDQ_CREATE_CQ_PG_SIZE_SFT); pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK); req.pg_size_lvl = cpu_to_le32(pg_sz_lvl); req.pbl = cpu_to_le64(pbl->pg_map_arr[0]); req.cq_fco_cnq_id = cpu_to_le32( (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) << CMDQ_CREATE_CQ_CNQ_ID_SFT); rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, NULL, 0); if (rc) goto fail; cq->id = le32_to_cpu(resp.xid); cq->period = BNXT_QPLIB_QUEUE_START_PERIOD; init_waitqueue_head(&cq->waitq); INIT_LIST_HEAD(&cq->sqf_head); INIT_LIST_HEAD(&cq->rqf_head); spin_lock_init(&cq->compl_lock); spin_lock_init(&cq->flush_lock); cq->dbinfo.hwq = &cq->hwq; cq->dbinfo.xid = cq->id; cq->dbinfo.db = cq->dpi->dbr; cq->dbinfo.priv_db = res->dpi_tbl.dbr_bar_reg_iomem; bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA); return 0; fail: bnxt_qplib_free_hwq(res, &cq->hwq); exit: return rc; } int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq) { struct bnxt_qplib_rcfw *rcfw = res->rcfw; struct cmdq_destroy_cq req; struct creq_destroy_cq_resp resp; u16 total_cnq_events; u16 cmd_flags = 0; int rc; RCFW_CMD_PREP(req, DESTROY_CQ, cmd_flags); req.cq_cid = cpu_to_le32(cq->id); rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, NULL, 0); if (rc) return rc; total_cnq_events = le16_to_cpu(resp.total_cnq_events); __wait_for_all_nqes(cq, total_cnq_events); bnxt_qplib_free_hwq(res, &cq->hwq); return 0; } static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp, struct bnxt_qplib_cqe **pcqe, int *budget) { struct bnxt_qplib_cqe *cqe; u32 start, last; int rc = 0; /* Now complete all outstanding SQEs with FLUSHED_ERR */ start = sq->swq_start; cqe = *pcqe; while (*budget) { last = sq->swq_last; if (start == last) break; /* Skip the FENCE WQE completions */ if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) { bnxt_qplib_cancel_phantom_processing(qp); goto skip_compl; } memset(cqe, 0, sizeof(*cqe)); cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR; cqe->opcode = CQ_BASE_CQE_TYPE_REQ; cqe->qp_handle = (u64)(unsigned long)qp; cqe->wr_id = sq->swq[last].wr_id; cqe->src_qp = qp->id; cqe->type = sq->swq[last].type; cqe++; (*budget)--; skip_compl: bnxt_qplib_hwq_incr_cons(&sq->hwq, sq->swq[last].slots); sq->swq_last = sq->swq[last].next_idx; } *pcqe = cqe; if (!(*budget) && sq->swq_last != start) /* Out of budget */ rc = -EAGAIN; return rc; } static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp, struct bnxt_qplib_cqe **pcqe, int *budget) { struct bnxt_qplib_cqe *cqe; u32 start, last; int opcode = 0; int rc = 0; switch (qp->type) { case CMDQ_CREATE_QP1_TYPE_GSI: opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1; break; case CMDQ_CREATE_QP_TYPE_RC: opcode = CQ_BASE_CQE_TYPE_RES_RC; break; case CMDQ_CREATE_QP_TYPE_UD: case CMDQ_CREATE_QP_TYPE_GSI: opcode = CQ_BASE_CQE_TYPE_RES_UD; break; } /* Flush the rest of the RQ */ start = rq->swq_start; cqe = *pcqe; while (*budget) { last = rq->swq_last; if (last == start) break; memset(cqe, 0, sizeof(*cqe)); cqe->status = CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR; cqe->opcode = opcode; cqe->qp_handle = (unsigned long)qp; cqe->wr_id = rq->swq[last].wr_id; cqe++; (*budget)--; bnxt_qplib_hwq_incr_cons(&rq->hwq, rq->swq[last].slots); rq->swq_last = rq->swq[last].next_idx; } *pcqe = cqe; if (!*budget && rq->swq_last != start) /* Out of budget */ rc = -EAGAIN; return rc; } void bnxt_qplib_mark_qp_error(void *qp_handle) { struct bnxt_qplib_qp *qp = qp_handle; if (!qp) return; /* Must block new posting of SQ and RQ */ qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; bnxt_qplib_cancel_phantom_processing(qp); } /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive) * CQE is track from sw_cq_cons to max_element but valid only if VALID=1 */ static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq, u32 cq_cons, u32 swq_last, u32 cqe_sq_cons) { u32 peek_sw_cq_cons, peek_raw_cq_cons, peek_sq_cons_idx; struct bnxt_qplib_q *sq = &qp->sq; struct cq_req *peek_req_hwcqe; struct bnxt_qplib_qp *peek_qp; struct bnxt_qplib_q *peek_sq; struct bnxt_qplib_swq *swq; struct cq_base *peek_hwcqe; int i, rc = 0; /* Normal mode */ /* Check for the psn_search marking before completing */ swq = &sq->swq[swq_last]; if (swq->psn_search && le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) { /* Unmark */ swq->psn_search->flags_next_psn = cpu_to_le32 (le32_to_cpu(swq->psn_search->flags_next_psn) & ~0x80000000); dev_dbg(&cq->hwq.pdev->dev, "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n", cq_cons, qp->id, swq_last, cqe_sq_cons); sq->condition = true; sq->send_phantom = true; /* TODO: Only ARM if the previous SQE is ARMALL */ bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL); rc = -EAGAIN; goto out; } if (sq->condition) { /* Peek at the completions */ peek_raw_cq_cons = cq->hwq.cons; peek_sw_cq_cons = cq_cons; i = cq->hwq.max_elements; while (i--) { peek_sw_cq_cons = HWQ_CMP((peek_sw_cq_cons), &cq->hwq); peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq, peek_sw_cq_cons, NULL); /* If the next hwcqe is VALID */ if (CQE_CMP_VALID(peek_hwcqe, peek_raw_cq_cons, cq->hwq.max_elements)) { /* * The valid test of the entry must be done first before * reading any further. */ dma_rmb(); /* If the next hwcqe is a REQ */ if ((peek_hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) == CQ_BASE_CQE_TYPE_REQ) { peek_req_hwcqe = (struct cq_req *) peek_hwcqe; peek_qp = (struct bnxt_qplib_qp *) ((unsigned long) le64_to_cpu (peek_req_hwcqe->qp_handle)); peek_sq = &peek_qp->sq; peek_sq_cons_idx = ((le16_to_cpu( peek_req_hwcqe->sq_cons_idx) - 1) % sq->max_wqe); /* If the hwcqe's sq's wr_id matches */ if (peek_sq == sq && sq->swq[peek_sq_cons_idx].wr_id == BNXT_QPLIB_FENCE_WRID) { /* * Unbreak only if the phantom * comes back */ dev_dbg(&cq->hwq.pdev->dev, "FP: Got Phantom CQE\n"); sq->condition = false; sq->single = true; rc = 0; goto out; } } /* Valid but not the phantom, so keep looping */ } else { /* Not valid yet, just exit and wait */ rc = -EINVAL; goto out; } peek_sw_cq_cons++; peek_raw_cq_cons++; } dev_err(&cq->hwq.pdev->dev, "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n", cq_cons, qp->id, swq_last, cqe_sq_cons); rc = -EINVAL; } out: return rc; } static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq, struct cq_req *hwcqe, struct bnxt_qplib_cqe **pcqe, int *budget, u32 cq_cons, struct bnxt_qplib_qp **lib_qp) { struct bnxt_qplib_swq *swq; struct bnxt_qplib_cqe *cqe; struct bnxt_qplib_qp *qp; struct bnxt_qplib_q *sq; u32 cqe_sq_cons; int rc = 0; qp = (struct bnxt_qplib_qp *)((unsigned long) le64_to_cpu(hwcqe->qp_handle)); if (!qp) { dev_err(&cq->hwq.pdev->dev, "FP: Process Req qp is NULL\n"); return -EINVAL; } sq = &qp->sq; cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_wqe; if (qp->sq.flushed) { dev_dbg(&cq->hwq.pdev->dev, "%s: QP in Flush QP = %p\n", __func__, qp); goto done; } /* Require to walk the sq's swq to fabricate CQEs for all previously * signaled SWQEs due to CQE aggregation from the current sq cons * to the cqe_sq_cons */ cqe = *pcqe; while (*budget) { if (sq->swq_last == cqe_sq_cons) /* Done */ break; swq = &sq->swq[sq->swq_last]; memset(cqe, 0, sizeof(*cqe)); cqe->opcode = CQ_BASE_CQE_TYPE_REQ; cqe->qp_handle = (u64)(unsigned long)qp; cqe->src_qp = qp->id; cqe->wr_id = swq->wr_id; if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID) goto skip; cqe->type = swq->type; /* For the last CQE, check for status. For errors, regardless * of the request being signaled or not, it must complete with * the hwcqe error status */ if (swq->next_idx == cqe_sq_cons && hwcqe->status != CQ_REQ_STATUS_OK) { cqe->status = hwcqe->status; dev_err(&cq->hwq.pdev->dev, "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n", sq->swq_last, cqe->wr_id, cqe->status); cqe++; (*budget)--; bnxt_qplib_mark_qp_error(qp); /* Add qp to flush list of the CQ */ bnxt_qplib_add_flush_qp(qp); } else { /* Before we complete, do WA 9060 */ if (do_wa9060(qp, cq, cq_cons, sq->swq_last, cqe_sq_cons)) { *lib_qp = qp; goto out; } if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) { cqe->status = CQ_REQ_STATUS_OK; cqe++; (*budget)--; } } skip: bnxt_qplib_hwq_incr_cons(&sq->hwq, swq->slots); sq->swq_last = swq->next_idx; if (sq->single) break; } out: *pcqe = cqe; if (sq->swq_last != cqe_sq_cons) { /* Out of budget */ rc = -EAGAIN; goto done; } /* * Back to normal completion mode only after it has completed all of * the WC for this CQE */ sq->single = false; done: return rc; } static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag) { spin_lock(&srq->hwq.lock); srq->swq[srq->last_idx].next_idx = (int)tag; srq->last_idx = (int)tag; srq->swq[srq->last_idx].next_idx = -1; srq->hwq.cons++; /* Support for SRQE counter */ spin_unlock(&srq->hwq.lock); } static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq, struct cq_res_rc *hwcqe, struct bnxt_qplib_cqe **pcqe, int *budget) { struct bnxt_qplib_srq *srq; struct bnxt_qplib_cqe *cqe; struct bnxt_qplib_qp *qp; struct bnxt_qplib_q *rq; u32 wr_id_idx; int rc = 0; qp = (struct bnxt_qplib_qp *)((unsigned long) le64_to_cpu(hwcqe->qp_handle)); if (!qp) { dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n"); return -EINVAL; } if (qp->rq.flushed) { dev_dbg(&cq->hwq.pdev->dev, "%s: QP in Flush QP = %p\n", __func__, qp); goto done; } cqe = *pcqe; cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK; cqe->length = le32_to_cpu(hwcqe->length); cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key); cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle); cqe->flags = le16_to_cpu(hwcqe->flags); cqe->status = hwcqe->status; cqe->qp_handle = (u64)(unsigned long)qp; wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) & CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK; if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) { srq = qp->srq; if (!srq) return -EINVAL; if (wr_id_idx >= srq->hwq.max_elements) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n", wr_id_idx, srq->hwq.max_elements); return -EINVAL; } cqe->wr_id = srq->swq[wr_id_idx].wr_id; bnxt_qplib_release_srqe(srq, wr_id_idx); cqe++; (*budget)--; *pcqe = cqe; } else { struct bnxt_qplib_swq *swq; rq = &qp->rq; if (wr_id_idx > (rq->max_wqe - 1)) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n", wr_id_idx, rq->max_wqe); return -EINVAL; } if (wr_id_idx != rq->swq_last) return -EINVAL; swq = &rq->swq[rq->swq_last]; cqe->wr_id = swq->wr_id; cqe++; (*budget)--; bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots); rq->swq_last = swq->next_idx; *pcqe = cqe; if (hwcqe->status != CQ_RES_RC_STATUS_OK) { qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; /* Add qp to flush list of the CQ */ bnxt_qplib_add_flush_qp(qp); } } done: return rc; } static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq, struct cq_res_ud *hwcqe, struct bnxt_qplib_cqe **pcqe, int *budget) { struct bnxt_qplib_srq *srq; struct bnxt_qplib_cqe *cqe; struct bnxt_qplib_qp *qp; struct bnxt_qplib_q *rq; u32 wr_id_idx; int rc = 0; qp = (struct bnxt_qplib_qp *)((unsigned long) le64_to_cpu(hwcqe->qp_handle)); if (!qp) { dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n"); return -EINVAL; } if (qp->rq.flushed) { dev_dbg(&cq->hwq.pdev->dev, "%s: QP in Flush QP = %p\n", __func__, qp); goto done; } cqe = *pcqe; cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK; cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK; cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata); cqe->invrkey = le32_to_cpu(hwcqe->imm_data); cqe->flags = le16_to_cpu(hwcqe->flags); cqe->status = hwcqe->status; cqe->qp_handle = (u64)(unsigned long)qp; /*FIXME: Endianness fix needed for smace */ memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN); wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id) & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK; cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) | ((le32_to_cpu( hwcqe->src_qp_high_srq_or_rq_wr_id) & CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8); if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) { srq = qp->srq; if (!srq) return -EINVAL; if (wr_id_idx >= srq->hwq.max_elements) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n", wr_id_idx, srq->hwq.max_elements); return -EINVAL; } cqe->wr_id = srq->swq[wr_id_idx].wr_id; bnxt_qplib_release_srqe(srq, wr_id_idx); cqe++; (*budget)--; *pcqe = cqe; } else { struct bnxt_qplib_swq *swq; rq = &qp->rq; if (wr_id_idx > (rq->max_wqe - 1)) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n", wr_id_idx, rq->max_wqe); return -EINVAL; } if (rq->swq_last != wr_id_idx) return -EINVAL; swq = &rq->swq[rq->swq_last]; cqe->wr_id = swq->wr_id; cqe++; (*budget)--; bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots); rq->swq_last = swq->next_idx; *pcqe = cqe; if (hwcqe->status != CQ_RES_RC_STATUS_OK) { qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; /* Add qp to flush list of the CQ */ bnxt_qplib_add_flush_qp(qp); } } done: return rc; } bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq) { struct cq_base *hw_cqe; u32 sw_cons, raw_cons; bool rc = true; raw_cons = cq->hwq.cons; sw_cons = HWQ_CMP(raw_cons, &cq->hwq); hw_cqe = bnxt_qplib_get_qe(&cq->hwq, sw_cons, NULL); /* Check for Valid bit. If the CQE is valid, return false */ rc = !CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements); return rc; } static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq, struct cq_res_raweth_qp1 *hwcqe, struct bnxt_qplib_cqe **pcqe, int *budget) { struct bnxt_qplib_qp *qp; struct bnxt_qplib_q *rq; struct bnxt_qplib_srq *srq; struct bnxt_qplib_cqe *cqe; u32 wr_id_idx; int rc = 0; qp = (struct bnxt_qplib_qp *)((unsigned long) le64_to_cpu(hwcqe->qp_handle)); if (!qp) { dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n"); return -EINVAL; } if (qp->rq.flushed) { dev_dbg(&cq->hwq.pdev->dev, "%s: QP in Flush QP = %p\n", __func__, qp); goto done; } cqe = *pcqe; cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK; cqe->flags = le16_to_cpu(hwcqe->flags); cqe->qp_handle = (u64)(unsigned long)qp; wr_id_idx = le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id) & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK; cqe->src_qp = qp->id; if (qp->id == 1 && !cqe->length) { /* Add workaround for the length misdetection */ cqe->length = 296; } else { cqe->length = le16_to_cpu(hwcqe->length); } cqe->pkey_index = qp->pkey_index; memcpy(cqe->smac, qp->smac, 6); cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags); cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2); cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata); if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) { srq = qp->srq; if (!srq) { dev_err(&cq->hwq.pdev->dev, "FP: SRQ used but not defined??\n"); return -EINVAL; } if (wr_id_idx >= srq->hwq.max_elements) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n", wr_id_idx, srq->hwq.max_elements); return -EINVAL; } cqe->wr_id = srq->swq[wr_id_idx].wr_id; bnxt_qplib_release_srqe(srq, wr_id_idx); cqe++; (*budget)--; *pcqe = cqe; } else { struct bnxt_qplib_swq *swq; rq = &qp->rq; if (wr_id_idx > (rq->max_wqe - 1)) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n", wr_id_idx, rq->max_wqe); return -EINVAL; } if (rq->swq_last != wr_id_idx) return -EINVAL; swq = &rq->swq[rq->swq_last]; cqe->wr_id = swq->wr_id; cqe++; (*budget)--; bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots); rq->swq_last = swq->next_idx; *pcqe = cqe; if (hwcqe->status != CQ_RES_RC_STATUS_OK) { qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; /* Add qp to flush list of the CQ */ bnxt_qplib_add_flush_qp(qp); } } done: return rc; } static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq, struct cq_terminal *hwcqe, struct bnxt_qplib_cqe **pcqe, int *budget) { struct bnxt_qplib_qp *qp; struct bnxt_qplib_q *sq, *rq; struct bnxt_qplib_cqe *cqe; u32 swq_last = 0, cqe_cons; int rc = 0; /* Check the Status */ if (hwcqe->status != CQ_TERMINAL_STATUS_OK) dev_warn(&cq->hwq.pdev->dev, "FP: CQ Process Terminal Error status = 0x%x\n", hwcqe->status); qp = (struct bnxt_qplib_qp *)((unsigned long) le64_to_cpu(hwcqe->qp_handle)); if (!qp) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Process terminal qp is NULL\n"); return -EINVAL; } /* Must block new posting of SQ and RQ */ qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; sq = &qp->sq; rq = &qp->rq; cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx); if (cqe_cons == 0xFFFF) goto do_rq; cqe_cons %= sq->max_wqe; if (qp->sq.flushed) { dev_dbg(&cq->hwq.pdev->dev, "%s: QP in Flush QP = %p\n", __func__, qp); goto sq_done; } /* Terminal CQE can also include aggregated successful CQEs prior. * So we must complete all CQEs from the current sq's cons to the * cq_cons with status OK */ cqe = *pcqe; while (*budget) { swq_last = sq->swq_last; if (swq_last == cqe_cons) break; if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) { memset(cqe, 0, sizeof(*cqe)); cqe->status = CQ_REQ_STATUS_OK; cqe->opcode = CQ_BASE_CQE_TYPE_REQ; cqe->qp_handle = (u64)(unsigned long)qp; cqe->src_qp = qp->id; cqe->wr_id = sq->swq[swq_last].wr_id; cqe->type = sq->swq[swq_last].type; cqe++; (*budget)--; } bnxt_qplib_hwq_incr_cons(&sq->hwq, sq->swq[swq_last].slots); sq->swq_last = sq->swq[swq_last].next_idx; } *pcqe = cqe; if (!(*budget) && swq_last != cqe_cons) { /* Out of budget */ rc = -EAGAIN; goto sq_done; } sq_done: if (rc) return rc; do_rq: cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx); if (cqe_cons == 0xFFFF) { goto done; } else if (cqe_cons > rq->max_wqe - 1) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n", cqe_cons, rq->max_wqe); rc = -EINVAL; goto done; } if (qp->rq.flushed) { dev_dbg(&cq->hwq.pdev->dev, "%s: QP in Flush QP = %p\n", __func__, qp); rc = 0; goto done; } /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR * from the current rq->cons to the rq->prod regardless what the * rq->cons the terminal CQE indicates */ /* Add qp to flush list of the CQ */ bnxt_qplib_add_flush_qp(qp); done: return rc; } static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq, struct cq_cutoff *hwcqe) { /* Check the Status */ if (hwcqe->status != CQ_CUTOFF_STATUS_OK) { dev_err(&cq->hwq.pdev->dev, "FP: CQ Process Cutoff Error status = 0x%x\n", hwcqe->status); return -EINVAL; } clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags); wake_up_interruptible(&cq->waitq); return 0; } int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe, int num_cqes) { struct bnxt_qplib_qp *qp = NULL; u32 budget = num_cqes; unsigned long flags; spin_lock_irqsave(&cq->flush_lock, flags); list_for_each_entry(qp, &cq->sqf_head, sq_flush) { dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp); __flush_sq(&qp->sq, qp, &cqe, &budget); } list_for_each_entry(qp, &cq->rqf_head, rq_flush) { dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp); __flush_rq(&qp->rq, qp, &cqe, &budget); } spin_unlock_irqrestore(&cq->flush_lock, flags); return num_cqes - budget; } int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe, int num_cqes, struct bnxt_qplib_qp **lib_qp) { struct cq_base *hw_cqe; u32 sw_cons, raw_cons; int budget, rc = 0; u8 type; raw_cons = cq->hwq.cons; budget = num_cqes; while (budget) { sw_cons = HWQ_CMP(raw_cons, &cq->hwq); hw_cqe = bnxt_qplib_get_qe(&cq->hwq, sw_cons, NULL); /* Check for Valid bit */ if (!CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements)) break; /* * The valid test of the entry must be done first before * reading any further. */ dma_rmb(); /* From the device's respective CQE format to qplib_wc*/ type = hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK; switch (type) { case CQ_BASE_CQE_TYPE_REQ: rc = bnxt_qplib_cq_process_req(cq, (struct cq_req *)hw_cqe, &cqe, &budget, sw_cons, lib_qp); break; case CQ_BASE_CQE_TYPE_RES_RC: rc = bnxt_qplib_cq_process_res_rc(cq, (struct cq_res_rc *) hw_cqe, &cqe, &budget); break; case CQ_BASE_CQE_TYPE_RES_UD: rc = bnxt_qplib_cq_process_res_ud (cq, (struct cq_res_ud *)hw_cqe, &cqe, &budget); break; case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1: rc = bnxt_qplib_cq_process_res_raweth_qp1 (cq, (struct cq_res_raweth_qp1 *) hw_cqe, &cqe, &budget); break; case CQ_BASE_CQE_TYPE_TERMINAL: rc = bnxt_qplib_cq_process_terminal (cq, (struct cq_terminal *)hw_cqe, &cqe, &budget); break; case CQ_BASE_CQE_TYPE_CUT_OFF: bnxt_qplib_cq_process_cutoff (cq, (struct cq_cutoff *)hw_cqe); /* Done processing this CQ */ goto exit; default: dev_err(&cq->hwq.pdev->dev, "process_cq unknown type 0x%lx\n", hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK); rc = -EINVAL; break; } if (rc < 0) { if (rc == -EAGAIN) break; /* Error while processing the CQE, just skip to the * next one */ if (type != CQ_BASE_CQE_TYPE_TERMINAL) dev_err(&cq->hwq.pdev->dev, "process_cqe error rc = 0x%x\n", rc); } raw_cons++; } if (cq->hwq.cons != raw_cons) { cq->hwq.cons = raw_cons; bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ); } exit: return num_cqes - budget; } void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type) { if (arm_type) bnxt_qplib_ring_db(&cq->dbinfo, arm_type); /* Using cq->arm_state variable to track whether to issue cq handler */ atomic_set(&cq->arm_state, 1); } void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp) { flush_workqueue(qp->scq->nq->cqn_wq); if (qp->scq != qp->rcq) flush_workqueue(qp->rcq->nq->cqn_wq); }
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