| /* |
| * 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 "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, pkey; |
| 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) { |
| if (!bnxt_qplib_get_pkey(res, &res->pkey_tbl, |
| qp->pkey_index, &pkey)) |
| req.pkey = cpu_to_le16(pkey); |
| } |
| 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); |
| } |