112515907SHans Petter Selasky /*- 2b633e08cSHans Petter Selasky * Copyright (c) 2013-2020, Mellanox Technologies. All rights reserved. 312515907SHans Petter Selasky * 412515907SHans Petter Selasky * Redistribution and use in source and binary forms, with or without 512515907SHans Petter Selasky * modification, are permitted provided that the following conditions 612515907SHans Petter Selasky * are met: 712515907SHans Petter Selasky * 1. Redistributions of source code must retain the above copyright 812515907SHans Petter Selasky * notice, this list of conditions and the following disclaimer. 912515907SHans Petter Selasky * 2. Redistributions in binary form must reproduce the above copyright 1012515907SHans Petter Selasky * notice, this list of conditions and the following disclaimer in the 1112515907SHans Petter Selasky * documentation and/or other materials provided with the distribution. 1212515907SHans Petter Selasky * 1312515907SHans Petter Selasky * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND 1412515907SHans Petter Selasky * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1512515907SHans Petter Selasky * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1612515907SHans Petter Selasky * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 1712515907SHans Petter Selasky * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1812515907SHans Petter Selasky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 1912515907SHans Petter Selasky * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2012515907SHans Petter Selasky * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2112515907SHans Petter Selasky * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2212515907SHans Petter Selasky * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2312515907SHans Petter Selasky * SUCH DAMAGE. 2412515907SHans Petter Selasky * 2512515907SHans Petter Selasky * $FreeBSD$ 2612515907SHans Petter Selasky */ 2712515907SHans Petter Selasky 2870600979SKonstantin Belousov #include "opt_rss.h" 2970600979SKonstantin Belousov #include "opt_ratelimit.h" 3070600979SKonstantin Belousov 3112515907SHans Petter Selasky #include <linux/kref.h> 3212515907SHans Petter Selasky #include <rdma/ib_umem.h> 3312515907SHans Petter Selasky #include <rdma/ib_user_verbs.h> 348e6e287fSHans Petter Selasky #include <rdma/ib_cache.h> 35b633e08cSHans Petter Selasky #include <rdma/uverbs_ioctl.h> 3612515907SHans Petter Selasky #include "mlx5_ib.h" 3712515907SHans Petter Selasky 38f34f0a65SHans Petter Selasky static void mlx5_ib_cq_comp(struct mlx5_core_cq *cq, struct mlx5_eqe *eqe __unused) 3912515907SHans Petter Selasky { 4012515907SHans Petter Selasky struct ib_cq *ibcq = &to_mibcq(cq)->ibcq; 4112515907SHans Petter Selasky 4212515907SHans Petter Selasky ibcq->comp_handler(ibcq, ibcq->cq_context); 4312515907SHans Petter Selasky } 4412515907SHans Petter Selasky 4512515907SHans Petter Selasky static void mlx5_ib_cq_event(struct mlx5_core_cq *mcq, int type) 4612515907SHans Petter Selasky { 4712515907SHans Petter Selasky struct mlx5_ib_cq *cq = container_of(mcq, struct mlx5_ib_cq, mcq); 4812515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 4912515907SHans Petter Selasky struct ib_cq *ibcq = &cq->ibcq; 5012515907SHans Petter Selasky struct ib_event event; 5112515907SHans Petter Selasky 5212515907SHans Petter Selasky if (type != MLX5_EVENT_TYPE_CQ_ERROR) { 5312515907SHans Petter Selasky mlx5_ib_warn(dev, "Unexpected event type %d on CQ %06x\n", 5412515907SHans Petter Selasky type, mcq->cqn); 5512515907SHans Petter Selasky return; 5612515907SHans Petter Selasky } 5712515907SHans Petter Selasky 5812515907SHans Petter Selasky if (ibcq->event_handler) { 5912515907SHans Petter Selasky event.device = &dev->ib_dev; 6012515907SHans Petter Selasky event.event = IB_EVENT_CQ_ERR; 6112515907SHans Petter Selasky event.element.cq = ibcq; 6212515907SHans Petter Selasky ibcq->event_handler(&event, ibcq->cq_context); 6312515907SHans Petter Selasky } 6412515907SHans Petter Selasky } 6512515907SHans Petter Selasky 6612515907SHans Petter Selasky static void *get_cqe_from_buf(struct mlx5_ib_cq_buf *buf, int n, int size) 6712515907SHans Petter Selasky { 6812515907SHans Petter Selasky return mlx5_buf_offset(&buf->buf, n * size); 6912515907SHans Petter Selasky } 7012515907SHans Petter Selasky 7112515907SHans Petter Selasky static void *get_cqe(struct mlx5_ib_cq *cq, int n) 7212515907SHans Petter Selasky { 7312515907SHans Petter Selasky return get_cqe_from_buf(&cq->buf, n, cq->mcq.cqe_sz); 7412515907SHans Petter Selasky } 7512515907SHans Petter Selasky 7612515907SHans Petter Selasky static u8 sw_ownership_bit(int n, int nent) 7712515907SHans Petter Selasky { 7812515907SHans Petter Selasky return (n & nent) ? 1 : 0; 7912515907SHans Petter Selasky } 8012515907SHans Petter Selasky 8112515907SHans Petter Selasky static void *get_sw_cqe(struct mlx5_ib_cq *cq, int n) 8212515907SHans Petter Selasky { 8312515907SHans Petter Selasky void *cqe = get_cqe(cq, n & cq->ibcq.cqe); 8412515907SHans Petter Selasky struct mlx5_cqe64 *cqe64; 8512515907SHans Petter Selasky 8612515907SHans Petter Selasky cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64; 8712515907SHans Petter Selasky 8812515907SHans Petter Selasky if (likely((cqe64->op_own) >> 4 != MLX5_CQE_INVALID) && 8912515907SHans Petter Selasky !((cqe64->op_own & MLX5_CQE_OWNER_MASK) ^ !!(n & (cq->ibcq.cqe + 1)))) { 9012515907SHans Petter Selasky return cqe; 9112515907SHans Petter Selasky } else { 9212515907SHans Petter Selasky return NULL; 9312515907SHans Petter Selasky } 9412515907SHans Petter Selasky } 9512515907SHans Petter Selasky 9612515907SHans Petter Selasky static void *next_cqe_sw(struct mlx5_ib_cq *cq) 9712515907SHans Petter Selasky { 9812515907SHans Petter Selasky return get_sw_cqe(cq, cq->mcq.cons_index); 9912515907SHans Petter Selasky } 10012515907SHans Petter Selasky 10112515907SHans Petter Selasky static enum ib_wc_opcode get_umr_comp(struct mlx5_ib_wq *wq, int idx) 10212515907SHans Petter Selasky { 1038e6e287fSHans Petter Selasky switch (wq->wr_data[idx]) { 1048e6e287fSHans Petter Selasky case MLX5_IB_WR_UMR: 1058e6e287fSHans Petter Selasky return 0; 1068e6e287fSHans Petter Selasky 10712515907SHans Petter Selasky case IB_WR_LOCAL_INV: 10812515907SHans Petter Selasky return IB_WC_LOCAL_INV; 10912515907SHans Petter Selasky 1108e6e287fSHans Petter Selasky case IB_WR_REG_MR: 1118e6e287fSHans Petter Selasky return IB_WC_REG_MR; 11212515907SHans Petter Selasky 11312515907SHans Petter Selasky default: 1148e6e287fSHans Petter Selasky pr_warn("unknown completion status\n"); 11512515907SHans Petter Selasky return 0; 11612515907SHans Petter Selasky } 11712515907SHans Petter Selasky } 11812515907SHans Petter Selasky 11912515907SHans Petter Selasky static void handle_good_req(struct ib_wc *wc, struct mlx5_cqe64 *cqe, 12012515907SHans Petter Selasky struct mlx5_ib_wq *wq, int idx) 12112515907SHans Petter Selasky { 12212515907SHans Petter Selasky wc->wc_flags = 0; 12312515907SHans Petter Selasky switch (be32_to_cpu(cqe->sop_drop_qpn) >> 24) { 12412515907SHans Petter Selasky case MLX5_OPCODE_RDMA_WRITE_IMM: 12512515907SHans Petter Selasky wc->wc_flags |= IB_WC_WITH_IMM; 12612515907SHans Petter Selasky case MLX5_OPCODE_RDMA_WRITE: 12712515907SHans Petter Selasky wc->opcode = IB_WC_RDMA_WRITE; 12812515907SHans Petter Selasky break; 12912515907SHans Petter Selasky case MLX5_OPCODE_SEND_IMM: 13012515907SHans Petter Selasky wc->wc_flags |= IB_WC_WITH_IMM; 13112515907SHans Petter Selasky case MLX5_OPCODE_SEND: 13212515907SHans Petter Selasky case MLX5_OPCODE_SEND_INVAL: 13312515907SHans Petter Selasky wc->opcode = IB_WC_SEND; 13412515907SHans Petter Selasky break; 13512515907SHans Petter Selasky case MLX5_OPCODE_RDMA_READ: 13612515907SHans Petter Selasky wc->opcode = IB_WC_RDMA_READ; 13712515907SHans Petter Selasky wc->byte_len = be32_to_cpu(cqe->byte_cnt); 13812515907SHans Petter Selasky break; 13912515907SHans Petter Selasky case MLX5_OPCODE_ATOMIC_CS: 14012515907SHans Petter Selasky wc->opcode = IB_WC_COMP_SWAP; 14112515907SHans Petter Selasky wc->byte_len = 8; 14212515907SHans Petter Selasky break; 14312515907SHans Petter Selasky case MLX5_OPCODE_ATOMIC_FA: 14412515907SHans Petter Selasky wc->opcode = IB_WC_FETCH_ADD; 14512515907SHans Petter Selasky wc->byte_len = 8; 14612515907SHans Petter Selasky break; 14712515907SHans Petter Selasky case MLX5_OPCODE_ATOMIC_MASKED_CS: 14812515907SHans Petter Selasky wc->opcode = IB_WC_MASKED_COMP_SWAP; 14912515907SHans Petter Selasky wc->byte_len = 8; 15012515907SHans Petter Selasky break; 15112515907SHans Petter Selasky case MLX5_OPCODE_ATOMIC_MASKED_FA: 15212515907SHans Petter Selasky wc->opcode = IB_WC_MASKED_FETCH_ADD; 15312515907SHans Petter Selasky wc->byte_len = 8; 15412515907SHans Petter Selasky break; 15512515907SHans Petter Selasky case MLX5_OPCODE_UMR: 15612515907SHans Petter Selasky wc->opcode = get_umr_comp(wq, idx); 15712515907SHans Petter Selasky break; 15812515907SHans Petter Selasky } 15912515907SHans Petter Selasky } 16012515907SHans Petter Selasky 16112515907SHans Petter Selasky enum { 16212515907SHans Petter Selasky MLX5_GRH_IN_BUFFER = 1, 16312515907SHans Petter Selasky MLX5_GRH_IN_CQE = 2, 16412515907SHans Petter Selasky }; 16512515907SHans Petter Selasky 16612515907SHans Petter Selasky static void handle_responder(struct ib_wc *wc, struct mlx5_cqe64 *cqe, 16712515907SHans Petter Selasky struct mlx5_ib_qp *qp) 16812515907SHans Petter Selasky { 1698e6e287fSHans Petter Selasky enum rdma_link_layer ll = rdma_port_get_link_layer(qp->ibqp.device, 1); 17012515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device); 17112515907SHans Petter Selasky struct mlx5_ib_srq *srq; 17212515907SHans Petter Selasky struct mlx5_ib_wq *wq; 17312515907SHans Petter Selasky u16 wqe_ctr; 17450e3ba10SHans Petter Selasky u8 roce_packet_type; 17550e3ba10SHans Petter Selasky bool vlan_present; 17612515907SHans Petter Selasky u8 g; 17712515907SHans Petter Selasky 17812515907SHans Petter Selasky if (qp->ibqp.srq || qp->ibqp.xrcd) { 17912515907SHans Petter Selasky struct mlx5_core_srq *msrq = NULL; 18012515907SHans Petter Selasky 18112515907SHans Petter Selasky if (qp->ibqp.xrcd) { 18212515907SHans Petter Selasky msrq = mlx5_core_get_srq(dev->mdev, 18312515907SHans Petter Selasky be32_to_cpu(cqe->srqn)); 18412515907SHans Petter Selasky srq = to_mibsrq(msrq); 18512515907SHans Petter Selasky } else { 18612515907SHans Petter Selasky srq = to_msrq(qp->ibqp.srq); 18712515907SHans Petter Selasky } 18812515907SHans Petter Selasky if (srq) { 18912515907SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe->wqe_counter); 19012515907SHans Petter Selasky wc->wr_id = srq->wrid[wqe_ctr]; 19112515907SHans Petter Selasky mlx5_ib_free_srq_wqe(srq, wqe_ctr); 19212515907SHans Petter Selasky if (msrq && atomic_dec_and_test(&msrq->refcount)) 19312515907SHans Petter Selasky complete(&msrq->free); 19412515907SHans Petter Selasky } 19512515907SHans Petter Selasky } else { 19612515907SHans Petter Selasky wq = &qp->rq; 1978e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)]; 19812515907SHans Petter Selasky ++wq->tail; 19912515907SHans Petter Selasky } 20012515907SHans Petter Selasky wc->byte_len = be32_to_cpu(cqe->byte_cnt); 20112515907SHans Petter Selasky 20212515907SHans Petter Selasky switch (cqe->op_own >> 4) { 20312515907SHans Petter Selasky case MLX5_CQE_RESP_WR_IMM: 20412515907SHans Petter Selasky wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; 20512515907SHans Petter Selasky wc->wc_flags = IB_WC_WITH_IMM; 20612515907SHans Petter Selasky wc->ex.imm_data = cqe->imm_inval_pkey; 20712515907SHans Petter Selasky break; 20812515907SHans Petter Selasky case MLX5_CQE_RESP_SEND: 20912515907SHans Petter Selasky wc->opcode = IB_WC_RECV; 2108e6e287fSHans Petter Selasky wc->wc_flags = IB_WC_IP_CSUM_OK; 2118e6e287fSHans Petter Selasky if (unlikely(!((cqe->hds_ip_ext & CQE_L3_OK) && 2128e6e287fSHans Petter Selasky (cqe->hds_ip_ext & CQE_L4_OK)))) 21312515907SHans Petter Selasky wc->wc_flags = 0; 21412515907SHans Petter Selasky break; 21512515907SHans Petter Selasky case MLX5_CQE_RESP_SEND_IMM: 21612515907SHans Petter Selasky wc->opcode = IB_WC_RECV; 21712515907SHans Petter Selasky wc->wc_flags = IB_WC_WITH_IMM; 21812515907SHans Petter Selasky wc->ex.imm_data = cqe->imm_inval_pkey; 21912515907SHans Petter Selasky break; 22012515907SHans Petter Selasky case MLX5_CQE_RESP_SEND_INV: 22112515907SHans Petter Selasky wc->opcode = IB_WC_RECV; 22212515907SHans Petter Selasky wc->wc_flags = IB_WC_WITH_INVALIDATE; 22312515907SHans Petter Selasky wc->ex.invalidate_rkey = be32_to_cpu(cqe->imm_inval_pkey); 22412515907SHans Petter Selasky break; 22512515907SHans Petter Selasky } 22612515907SHans Petter Selasky wc->src_qp = be32_to_cpu(cqe->flags_rqpn) & 0xffffff; 22712515907SHans Petter Selasky wc->dlid_path_bits = cqe->ml_path; 22812515907SHans Petter Selasky g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3; 22912515907SHans Petter Selasky wc->wc_flags |= g ? IB_WC_GRH : 0; 2308e6e287fSHans Petter Selasky if (unlikely(is_qp1(qp->ibqp.qp_type))) { 2318e6e287fSHans Petter Selasky u16 pkey = be32_to_cpu(cqe->imm_inval_pkey) & 0xffff; 23212515907SHans Petter Selasky 2338e6e287fSHans Petter Selasky ib_find_cached_pkey(&dev->ib_dev, qp->port, pkey, 2348e6e287fSHans Petter Selasky &wc->pkey_index); 2358e6e287fSHans Petter Selasky } else { 2368e6e287fSHans Petter Selasky wc->pkey_index = 0; 2378e6e287fSHans Petter Selasky } 23812515907SHans Petter Selasky 23950e3ba10SHans Petter Selasky if (ll != IB_LINK_LAYER_ETHERNET) { 24030416d4eSHans Petter Selasky wc->slid = be16_to_cpu(cqe->slid); 24150e3ba10SHans Petter Selasky wc->sl = (be32_to_cpu(cqe->flags_rqpn) >> 24) & 0xf; 2428e6e287fSHans Petter Selasky return; 24350e3ba10SHans Petter Selasky } 2448e6e287fSHans Petter Selasky 24530416d4eSHans Petter Selasky wc->slid = 0; 24650e3ba10SHans Petter Selasky vlan_present = cqe_has_vlan(cqe); 24750e3ba10SHans Petter Selasky roce_packet_type = (be32_to_cpu(cqe->flags_rqpn) >> 24) & 0x3; 24850e3ba10SHans Petter Selasky if (vlan_present) { 24950e3ba10SHans Petter Selasky wc->vlan_id = (be16_to_cpu(cqe->vlan_info)) & 0xfff; 25050e3ba10SHans Petter Selasky wc->sl = (be16_to_cpu(cqe->vlan_info) >> 13) & 0x7; 25150e3ba10SHans Petter Selasky wc->wc_flags |= IB_WC_WITH_VLAN; 25250e3ba10SHans Petter Selasky } else { 25350e3ba10SHans Petter Selasky wc->sl = 0; 25450e3ba10SHans Petter Selasky } 25550e3ba10SHans Petter Selasky 25650e3ba10SHans Petter Selasky switch (roce_packet_type) { 2578e6e287fSHans Petter Selasky case MLX5_CQE_ROCE_L3_HEADER_TYPE_GRH: 2588e6e287fSHans Petter Selasky wc->network_hdr_type = RDMA_NETWORK_IB; 2598e6e287fSHans Petter Selasky break; 2608e6e287fSHans Petter Selasky case MLX5_CQE_ROCE_L3_HEADER_TYPE_IPV6: 2618e6e287fSHans Petter Selasky wc->network_hdr_type = RDMA_NETWORK_IPV6; 2628e6e287fSHans Petter Selasky break; 2638e6e287fSHans Petter Selasky case MLX5_CQE_ROCE_L3_HEADER_TYPE_IPV4: 2648e6e287fSHans Petter Selasky wc->network_hdr_type = RDMA_NETWORK_IPV4; 2658e6e287fSHans Petter Selasky break; 2668e6e287fSHans Petter Selasky } 2678e6e287fSHans Petter Selasky wc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE; 26812515907SHans Petter Selasky } 26912515907SHans Petter Selasky 27012515907SHans Petter Selasky static void dump_cqe(struct mlx5_ib_dev *dev, struct mlx5_err_cqe *cqe) 27112515907SHans Petter Selasky { 27212515907SHans Petter Selasky __be32 *p = (__be32 *)cqe; 27312515907SHans Petter Selasky int i; 27412515907SHans Petter Selasky 27512515907SHans Petter Selasky mlx5_ib_warn(dev, "dump error cqe\n"); 27612515907SHans Petter Selasky for (i = 0; i < sizeof(*cqe) / 16; i++, p += 4) 2778e6e287fSHans Petter Selasky pr_info("%08x %08x %08x %08x\n", be32_to_cpu(p[0]), 2788e6e287fSHans Petter Selasky be32_to_cpu(p[1]), be32_to_cpu(p[2]), 2798e6e287fSHans Petter Selasky be32_to_cpu(p[3])); 28012515907SHans Petter Selasky } 28112515907SHans Petter Selasky 28212515907SHans Petter Selasky static void mlx5_handle_error_cqe(struct mlx5_ib_dev *dev, 28312515907SHans Petter Selasky struct mlx5_err_cqe *cqe, 28412515907SHans Petter Selasky struct ib_wc *wc) 28512515907SHans Petter Selasky { 28612515907SHans Petter Selasky int dump = 1; 28712515907SHans Petter Selasky 28812515907SHans Petter Selasky switch (cqe->syndrome) { 28912515907SHans Petter Selasky case MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR: 29012515907SHans Petter Selasky wc->status = IB_WC_LOC_LEN_ERR; 29112515907SHans Petter Selasky break; 29212515907SHans Petter Selasky case MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR: 29312515907SHans Petter Selasky wc->status = IB_WC_LOC_QP_OP_ERR; 29412515907SHans Petter Selasky break; 29512515907SHans Petter Selasky case MLX5_CQE_SYNDROME_LOCAL_PROT_ERR: 29612515907SHans Petter Selasky wc->status = IB_WC_LOC_PROT_ERR; 29712515907SHans Petter Selasky break; 29812515907SHans Petter Selasky case MLX5_CQE_SYNDROME_WR_FLUSH_ERR: 29912515907SHans Petter Selasky dump = 0; 30012515907SHans Petter Selasky wc->status = IB_WC_WR_FLUSH_ERR; 30112515907SHans Petter Selasky break; 30212515907SHans Petter Selasky case MLX5_CQE_SYNDROME_MW_BIND_ERR: 30312515907SHans Petter Selasky wc->status = IB_WC_MW_BIND_ERR; 30412515907SHans Petter Selasky break; 30512515907SHans Petter Selasky case MLX5_CQE_SYNDROME_BAD_RESP_ERR: 30612515907SHans Petter Selasky wc->status = IB_WC_BAD_RESP_ERR; 30712515907SHans Petter Selasky break; 30812515907SHans Petter Selasky case MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR: 30912515907SHans Petter Selasky wc->status = IB_WC_LOC_ACCESS_ERR; 31012515907SHans Petter Selasky break; 31112515907SHans Petter Selasky case MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR: 31212515907SHans Petter Selasky wc->status = IB_WC_REM_INV_REQ_ERR; 31312515907SHans Petter Selasky break; 31412515907SHans Petter Selasky case MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR: 31512515907SHans Petter Selasky wc->status = IB_WC_REM_ACCESS_ERR; 31612515907SHans Petter Selasky break; 31712515907SHans Petter Selasky case MLX5_CQE_SYNDROME_REMOTE_OP_ERR: 31812515907SHans Petter Selasky wc->status = IB_WC_REM_OP_ERR; 31912515907SHans Petter Selasky break; 32012515907SHans Petter Selasky case MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR: 32112515907SHans Petter Selasky wc->status = IB_WC_RETRY_EXC_ERR; 32212515907SHans Petter Selasky dump = 0; 32312515907SHans Petter Selasky break; 32412515907SHans Petter Selasky case MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR: 32512515907SHans Petter Selasky wc->status = IB_WC_RNR_RETRY_EXC_ERR; 32612515907SHans Petter Selasky dump = 0; 32712515907SHans Petter Selasky break; 32812515907SHans Petter Selasky case MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR: 32912515907SHans Petter Selasky wc->status = IB_WC_REM_ABORT_ERR; 33012515907SHans Petter Selasky break; 33112515907SHans Petter Selasky default: 33212515907SHans Petter Selasky wc->status = IB_WC_GENERAL_ERR; 33312515907SHans Petter Selasky break; 33412515907SHans Petter Selasky } 33512515907SHans Petter Selasky 33612515907SHans Petter Selasky wc->vendor_err = cqe->vendor_err_synd; 33712515907SHans Petter Selasky if (dump) 33812515907SHans Petter Selasky dump_cqe(dev, cqe); 33912515907SHans Petter Selasky } 34012515907SHans Petter Selasky 3418e6e287fSHans Petter Selasky static int is_atomic_response(struct mlx5_ib_qp *qp, uint16_t idx) 34212515907SHans Petter Selasky { 34312515907SHans Petter Selasky /* TBD: waiting decision 34412515907SHans Petter Selasky */ 34512515907SHans Petter Selasky return 0; 34612515907SHans Petter Selasky } 34712515907SHans Petter Selasky 3488e6e287fSHans Petter Selasky static void *mlx5_get_atomic_laddr(struct mlx5_ib_qp *qp, uint16_t idx) 34912515907SHans Petter Selasky { 35012515907SHans Petter Selasky struct mlx5_wqe_data_seg *dpseg; 35112515907SHans Petter Selasky void *addr; 35212515907SHans Petter Selasky 35312515907SHans Petter Selasky dpseg = mlx5_get_send_wqe(qp, idx) + sizeof(struct mlx5_wqe_ctrl_seg) + 35412515907SHans Petter Selasky sizeof(struct mlx5_wqe_raddr_seg) + 35512515907SHans Petter Selasky sizeof(struct mlx5_wqe_atomic_seg); 3568e6e287fSHans Petter Selasky addr = (void *)(unsigned long)be64_to_cpu(dpseg->addr); 35712515907SHans Petter Selasky return addr; 35812515907SHans Petter Selasky } 35912515907SHans Petter Selasky 36012515907SHans Petter Selasky static void handle_atomic(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64, 3618e6e287fSHans Petter Selasky uint16_t idx) 36212515907SHans Petter Selasky { 36312515907SHans Petter Selasky void *addr; 36412515907SHans Petter Selasky int byte_count; 36512515907SHans Petter Selasky int i; 36612515907SHans Petter Selasky 36712515907SHans Petter Selasky if (!is_atomic_response(qp, idx)) 36812515907SHans Petter Selasky return; 36912515907SHans Petter Selasky 37012515907SHans Petter Selasky byte_count = be32_to_cpu(cqe64->byte_cnt); 37112515907SHans Petter Selasky addr = mlx5_get_atomic_laddr(qp, idx); 37212515907SHans Petter Selasky 37312515907SHans Petter Selasky if (byte_count == 4) { 3748e6e287fSHans Petter Selasky *(uint32_t *)addr = be32_to_cpu(*((__be32 *)addr)); 37512515907SHans Petter Selasky } else { 37612515907SHans Petter Selasky for (i = 0; i < byte_count; i += 8) { 3778e6e287fSHans Petter Selasky *(uint64_t *)addr = be64_to_cpu(*((__be64 *)addr)); 37812515907SHans Petter Selasky addr += 8; 37912515907SHans Petter Selasky } 38012515907SHans Petter Selasky } 38112515907SHans Petter Selasky 38212515907SHans Petter Selasky return; 38312515907SHans Petter Selasky } 38412515907SHans Petter Selasky 38512515907SHans Petter Selasky static void handle_atomics(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64, 38612515907SHans Petter Selasky u16 tail, u16 head) 38712515907SHans Petter Selasky { 38812515907SHans Petter Selasky u16 idx; 38912515907SHans Petter Selasky 39012515907SHans Petter Selasky do { 39112515907SHans Petter Selasky idx = tail & (qp->sq.wqe_cnt - 1); 39212515907SHans Petter Selasky handle_atomic(qp, cqe64, idx); 39312515907SHans Petter Selasky if (idx == head) 39412515907SHans Petter Selasky break; 39512515907SHans Petter Selasky 3968e6e287fSHans Petter Selasky tail = qp->sq.w_list[idx].next; 39712515907SHans Petter Selasky } while (1); 3988e6e287fSHans Petter Selasky tail = qp->sq.w_list[idx].next; 39912515907SHans Petter Selasky qp->sq.last_poll = tail; 40012515907SHans Petter Selasky } 40112515907SHans Petter Selasky 40212515907SHans Petter Selasky static void free_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf) 40312515907SHans Petter Selasky { 40412515907SHans Petter Selasky mlx5_buf_free(dev->mdev, &buf->buf); 40512515907SHans Petter Selasky } 40612515907SHans Petter Selasky 4078e6e287fSHans Petter Selasky static void get_sig_err_item(struct mlx5_sig_err_cqe *cqe, 4088e6e287fSHans Petter Selasky struct ib_sig_err *item) 4098e6e287fSHans Petter Selasky { 4108e6e287fSHans Petter Selasky u16 syndrome = be16_to_cpu(cqe->syndrome); 4118e6e287fSHans Petter Selasky 4128e6e287fSHans Petter Selasky #define GUARD_ERR (1 << 13) 4138e6e287fSHans Petter Selasky #define APPTAG_ERR (1 << 12) 4148e6e287fSHans Petter Selasky #define REFTAG_ERR (1 << 11) 4158e6e287fSHans Petter Selasky 4168e6e287fSHans Petter Selasky if (syndrome & GUARD_ERR) { 4178e6e287fSHans Petter Selasky item->err_type = IB_SIG_BAD_GUARD; 4188e6e287fSHans Petter Selasky item->expected = be32_to_cpu(cqe->expected_trans_sig) >> 16; 4198e6e287fSHans Petter Selasky item->actual = be32_to_cpu(cqe->actual_trans_sig) >> 16; 4208e6e287fSHans Petter Selasky } else 4218e6e287fSHans Petter Selasky if (syndrome & REFTAG_ERR) { 4228e6e287fSHans Petter Selasky item->err_type = IB_SIG_BAD_REFTAG; 4238e6e287fSHans Petter Selasky item->expected = be32_to_cpu(cqe->expected_reftag); 4248e6e287fSHans Petter Selasky item->actual = be32_to_cpu(cqe->actual_reftag); 4258e6e287fSHans Petter Selasky } else 4268e6e287fSHans Petter Selasky if (syndrome & APPTAG_ERR) { 4278e6e287fSHans Petter Selasky item->err_type = IB_SIG_BAD_APPTAG; 4288e6e287fSHans Petter Selasky item->expected = be32_to_cpu(cqe->expected_trans_sig) & 0xffff; 4298e6e287fSHans Petter Selasky item->actual = be32_to_cpu(cqe->actual_trans_sig) & 0xffff; 4308e6e287fSHans Petter Selasky } else { 4318e6e287fSHans Petter Selasky pr_err("Got signature completion error with bad syndrome %04x\n", 4328e6e287fSHans Petter Selasky syndrome); 4338e6e287fSHans Petter Selasky } 4348e6e287fSHans Petter Selasky 4358e6e287fSHans Petter Selasky item->sig_err_offset = be64_to_cpu(cqe->err_offset); 4368e6e287fSHans Petter Selasky item->key = be32_to_cpu(cqe->mkey); 4378e6e287fSHans Petter Selasky } 4388e6e287fSHans Petter Selasky 43912515907SHans Petter Selasky static void sw_send_comp(struct mlx5_ib_qp *qp, int num_entries, 44012515907SHans Petter Selasky struct ib_wc *wc, int *npolled) 44112515907SHans Petter Selasky { 44212515907SHans Petter Selasky struct mlx5_ib_wq *wq; 4438e6e287fSHans Petter Selasky unsigned int cur; 4448e6e287fSHans Petter Selasky unsigned int idx; 44512515907SHans Petter Selasky int np; 44612515907SHans Petter Selasky int i; 44712515907SHans Petter Selasky 44812515907SHans Petter Selasky wq = &qp->sq; 44912515907SHans Petter Selasky cur = wq->head - wq->tail; 45012515907SHans Petter Selasky np = *npolled; 45112515907SHans Petter Selasky 45212515907SHans Petter Selasky if (cur == 0) 45312515907SHans Petter Selasky return; 45412515907SHans Petter Selasky 45512515907SHans Petter Selasky for (i = 0; i < cur && np < num_entries; i++) { 45612515907SHans Petter Selasky idx = wq->last_poll & (wq->wqe_cnt - 1); 4578e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[idx]; 45812515907SHans Petter Selasky wc->status = IB_WC_WR_FLUSH_ERR; 45912515907SHans Petter Selasky wc->vendor_err = MLX5_CQE_SYNDROME_WR_FLUSH_ERR; 46012515907SHans Petter Selasky wq->tail++; 46112515907SHans Petter Selasky np++; 46212515907SHans Petter Selasky wc->qp = &qp->ibqp; 46312515907SHans Petter Selasky wc++; 4648e6e287fSHans Petter Selasky wq->last_poll = wq->w_list[idx].next; 46512515907SHans Petter Selasky } 46612515907SHans Petter Selasky *npolled = np; 46712515907SHans Petter Selasky } 46812515907SHans Petter Selasky 46912515907SHans Petter Selasky static void sw_recv_comp(struct mlx5_ib_qp *qp, int num_entries, 47012515907SHans Petter Selasky struct ib_wc *wc, int *npolled) 47112515907SHans Petter Selasky { 47212515907SHans Petter Selasky struct mlx5_ib_wq *wq; 4738e6e287fSHans Petter Selasky unsigned int cur; 47412515907SHans Petter Selasky int np; 47512515907SHans Petter Selasky int i; 47612515907SHans Petter Selasky 47712515907SHans Petter Selasky wq = &qp->rq; 47812515907SHans Petter Selasky cur = wq->head - wq->tail; 47912515907SHans Petter Selasky np = *npolled; 48012515907SHans Petter Selasky 48112515907SHans Petter Selasky if (cur == 0) 48212515907SHans Petter Selasky return; 48312515907SHans Petter Selasky 48412515907SHans Petter Selasky for (i = 0; i < cur && np < num_entries; i++) { 4858e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)]; 48612515907SHans Petter Selasky wc->status = IB_WC_WR_FLUSH_ERR; 48712515907SHans Petter Selasky wc->vendor_err = MLX5_CQE_SYNDROME_WR_FLUSH_ERR; 48812515907SHans Petter Selasky wq->tail++; 48912515907SHans Petter Selasky np++; 49012515907SHans Petter Selasky wc->qp = &qp->ibqp; 49112515907SHans Petter Selasky wc++; 49212515907SHans Petter Selasky } 49312515907SHans Petter Selasky *npolled = np; 49412515907SHans Petter Selasky } 49512515907SHans Petter Selasky 49612515907SHans Petter Selasky static void mlx5_ib_poll_sw_comp(struct mlx5_ib_cq *cq, int num_entries, 49712515907SHans Petter Selasky struct ib_wc *wc, int *npolled) 49812515907SHans Petter Selasky { 49912515907SHans Petter Selasky struct mlx5_ib_qp *qp; 50012515907SHans Petter Selasky 50112515907SHans Petter Selasky *npolled = 0; 50212515907SHans Petter Selasky /* Find uncompleted WQEs belonging to that cq and retrun mmics ones */ 50312515907SHans Petter Selasky list_for_each_entry(qp, &cq->list_send_qp, cq_send_list) { 50412515907SHans Petter Selasky sw_send_comp(qp, num_entries, wc + *npolled, npolled); 50512515907SHans Petter Selasky if (*npolled >= num_entries) 50612515907SHans Petter Selasky return; 50712515907SHans Petter Selasky } 50812515907SHans Petter Selasky 50912515907SHans Petter Selasky list_for_each_entry(qp, &cq->list_recv_qp, cq_recv_list) { 51012515907SHans Petter Selasky sw_recv_comp(qp, num_entries, wc + *npolled, npolled); 51112515907SHans Petter Selasky if (*npolled >= num_entries) 51212515907SHans Petter Selasky return; 51312515907SHans Petter Selasky } 51412515907SHans Petter Selasky } 51512515907SHans Petter Selasky 51612515907SHans Petter Selasky static int mlx5_poll_one(struct mlx5_ib_cq *cq, 51712515907SHans Petter Selasky struct mlx5_ib_qp **cur_qp, 51812515907SHans Petter Selasky struct ib_wc *wc) 51912515907SHans Petter Selasky { 52012515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 52112515907SHans Petter Selasky struct mlx5_err_cqe *err_cqe; 52212515907SHans Petter Selasky struct mlx5_cqe64 *cqe64; 52312515907SHans Petter Selasky struct mlx5_core_qp *mqp; 52412515907SHans Petter Selasky struct mlx5_ib_wq *wq; 52512515907SHans Petter Selasky struct mlx5_sig_err_cqe *sig_err_cqe; 526b633e08cSHans Petter Selasky struct mlx5_core_mkey *mmkey; 52712515907SHans Petter Selasky struct mlx5_ib_mr *mr; 52812515907SHans Petter Selasky unsigned long flags; 5298e6e287fSHans Petter Selasky uint8_t opcode; 5308e6e287fSHans Petter Selasky uint32_t qpn; 53112515907SHans Petter Selasky u16 wqe_ctr; 53212515907SHans Petter Selasky void *cqe; 53312515907SHans Petter Selasky int idx; 53412515907SHans Petter Selasky 53512515907SHans Petter Selasky repoll: 53612515907SHans Petter Selasky cqe = next_cqe_sw(cq); 53712515907SHans Petter Selasky if (!cqe) 53812515907SHans Petter Selasky return -EAGAIN; 53912515907SHans Petter Selasky 54012515907SHans Petter Selasky cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64; 54112515907SHans Petter Selasky 54212515907SHans Petter Selasky ++cq->mcq.cons_index; 54312515907SHans Petter Selasky 54412515907SHans Petter Selasky /* Make sure we read CQ entry contents after we've checked the 54512515907SHans Petter Selasky * ownership bit. 54612515907SHans Petter Selasky */ 54712515907SHans Petter Selasky rmb(); 54812515907SHans Petter Selasky 54912515907SHans Petter Selasky opcode = cqe64->op_own >> 4; 55012515907SHans Petter Selasky if (unlikely(opcode == MLX5_CQE_RESIZE_CQ)) { 55112515907SHans Petter Selasky if (likely(cq->resize_buf)) { 55212515907SHans Petter Selasky free_cq_buf(dev, &cq->buf); 55312515907SHans Petter Selasky cq->buf = *cq->resize_buf; 55412515907SHans Petter Selasky kfree(cq->resize_buf); 55512515907SHans Petter Selasky cq->resize_buf = NULL; 55612515907SHans Petter Selasky goto repoll; 55712515907SHans Petter Selasky } else { 55812515907SHans Petter Selasky mlx5_ib_warn(dev, "unexpected resize cqe\n"); 55912515907SHans Petter Selasky } 56012515907SHans Petter Selasky } 56112515907SHans Petter Selasky 56212515907SHans Petter Selasky qpn = ntohl(cqe64->sop_drop_qpn) & 0xffffff; 56312515907SHans Petter Selasky if (!*cur_qp || (qpn != (*cur_qp)->ibqp.qp_num)) { 56412515907SHans Petter Selasky /* We do not have to take the QP table lock here, 56512515907SHans Petter Selasky * because CQs will be locked while QPs are removed 56612515907SHans Petter Selasky * from the table. 56712515907SHans Petter Selasky */ 56812515907SHans Petter Selasky mqp = __mlx5_qp_lookup(dev->mdev, qpn); 56912515907SHans Petter Selasky *cur_qp = to_mibqp(mqp); 57012515907SHans Petter Selasky } 57112515907SHans Petter Selasky 57212515907SHans Petter Selasky wc->qp = &(*cur_qp)->ibqp; 57312515907SHans Petter Selasky switch (opcode) { 57412515907SHans Petter Selasky case MLX5_CQE_REQ: 57512515907SHans Petter Selasky wq = &(*cur_qp)->sq; 57612515907SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe64->wqe_counter); 57712515907SHans Petter Selasky idx = wqe_ctr & (wq->wqe_cnt - 1); 57812515907SHans Petter Selasky handle_good_req(wc, cqe64, wq, idx); 57912515907SHans Petter Selasky handle_atomics(*cur_qp, cqe64, wq->last_poll, idx); 5808e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[idx]; 5818e6e287fSHans Petter Selasky wq->tail = wq->wqe_head[idx] + 1; 58212515907SHans Petter Selasky wc->status = IB_WC_SUCCESS; 58312515907SHans Petter Selasky break; 58412515907SHans Petter Selasky case MLX5_CQE_RESP_WR_IMM: 58512515907SHans Petter Selasky case MLX5_CQE_RESP_SEND: 58612515907SHans Petter Selasky case MLX5_CQE_RESP_SEND_IMM: 58712515907SHans Petter Selasky case MLX5_CQE_RESP_SEND_INV: 58812515907SHans Petter Selasky handle_responder(wc, cqe64, *cur_qp); 58912515907SHans Petter Selasky wc->status = IB_WC_SUCCESS; 59012515907SHans Petter Selasky break; 59112515907SHans Petter Selasky case MLX5_CQE_RESIZE_CQ: 59212515907SHans Petter Selasky break; 59312515907SHans Petter Selasky case MLX5_CQE_REQ_ERR: 59412515907SHans Petter Selasky case MLX5_CQE_RESP_ERR: 59512515907SHans Petter Selasky err_cqe = (struct mlx5_err_cqe *)cqe64; 59612515907SHans Petter Selasky mlx5_handle_error_cqe(dev, err_cqe, wc); 59712515907SHans Petter Selasky mlx5_ib_dbg(dev, "%s error cqe on cqn 0x%x:\n", 59812515907SHans Petter Selasky opcode == MLX5_CQE_REQ_ERR ? 59912515907SHans Petter Selasky "Requestor" : "Responder", cq->mcq.cqn); 60012515907SHans Petter Selasky mlx5_ib_dbg(dev, "syndrome 0x%x, vendor syndrome 0x%x\n", 60112515907SHans Petter Selasky err_cqe->syndrome, err_cqe->vendor_err_synd); 60212515907SHans Petter Selasky if (opcode == MLX5_CQE_REQ_ERR) { 60312515907SHans Petter Selasky wq = &(*cur_qp)->sq; 60412515907SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe64->wqe_counter); 60512515907SHans Petter Selasky idx = wqe_ctr & (wq->wqe_cnt - 1); 6068e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[idx]; 6078e6e287fSHans Petter Selasky wq->tail = wq->wqe_head[idx] + 1; 60812515907SHans Petter Selasky } else { 60912515907SHans Petter Selasky struct mlx5_ib_srq *srq; 61012515907SHans Petter Selasky 61112515907SHans Petter Selasky if ((*cur_qp)->ibqp.srq) { 61212515907SHans Petter Selasky srq = to_msrq((*cur_qp)->ibqp.srq); 61312515907SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe64->wqe_counter); 61412515907SHans Petter Selasky wc->wr_id = srq->wrid[wqe_ctr]; 61512515907SHans Petter Selasky mlx5_ib_free_srq_wqe(srq, wqe_ctr); 61612515907SHans Petter Selasky } else { 61712515907SHans Petter Selasky wq = &(*cur_qp)->rq; 6188e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)]; 61912515907SHans Petter Selasky ++wq->tail; 62012515907SHans Petter Selasky } 62112515907SHans Petter Selasky } 62212515907SHans Petter Selasky break; 62312515907SHans Petter Selasky case MLX5_CQE_SIG_ERR: 62412515907SHans Petter Selasky sig_err_cqe = (struct mlx5_sig_err_cqe *)cqe64; 62512515907SHans Petter Selasky 62612515907SHans Petter Selasky spin_lock_irqsave(&dev->mdev->priv.mr_table.lock, flags); 6278e6e287fSHans Petter Selasky mmkey = __mlx5_mr_lookup(dev->mdev, 6288e6e287fSHans Petter Selasky mlx5_base_mkey(be32_to_cpu(sig_err_cqe->mkey))); 6298e6e287fSHans Petter Selasky mr = to_mibmr(mmkey); 6308e6e287fSHans Petter Selasky get_sig_err_item(sig_err_cqe, &mr->sig->err_item); 63112515907SHans Petter Selasky mr->sig->sig_err_exists = true; 63212515907SHans Petter Selasky mr->sig->sigerr_count++; 63312515907SHans Petter Selasky 6348e6e287fSHans Petter Selasky mlx5_ib_warn(dev, "CQN: 0x%x Got SIGERR on key: 0x%x err_type %x err_offset %llx expected %x actual %x\n", 6358e6e287fSHans Petter Selasky cq->mcq.cqn, mr->sig->err_item.key, 6368e6e287fSHans Petter Selasky mr->sig->err_item.err_type, 6378e6e287fSHans Petter Selasky (long long)mr->sig->err_item.sig_err_offset, 6388e6e287fSHans Petter Selasky mr->sig->err_item.expected, 6398e6e287fSHans Petter Selasky mr->sig->err_item.actual); 64012515907SHans Petter Selasky 64112515907SHans Petter Selasky spin_unlock_irqrestore(&dev->mdev->priv.mr_table.lock, flags); 64212515907SHans Petter Selasky goto repoll; 64312515907SHans Petter Selasky } 64412515907SHans Petter Selasky 64512515907SHans Petter Selasky return 0; 64612515907SHans Petter Selasky } 64712515907SHans Petter Selasky 6488e6e287fSHans Petter Selasky static int poll_soft_wc(struct mlx5_ib_cq *cq, int num_entries, 6498e6e287fSHans Petter Selasky struct ib_wc *wc) 6508e6e287fSHans Petter Selasky { 6518e6e287fSHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 6528e6e287fSHans Petter Selasky struct mlx5_ib_wc *soft_wc, *next; 6538e6e287fSHans Petter Selasky int npolled = 0; 6548e6e287fSHans Petter Selasky 6558e6e287fSHans Petter Selasky list_for_each_entry_safe(soft_wc, next, &cq->wc_list, list) { 6568e6e287fSHans Petter Selasky if (npolled >= num_entries) 6578e6e287fSHans Petter Selasky break; 6588e6e287fSHans Petter Selasky 6598e6e287fSHans Petter Selasky mlx5_ib_dbg(dev, "polled software generated completion on CQ 0x%x\n", 6608e6e287fSHans Petter Selasky cq->mcq.cqn); 6618e6e287fSHans Petter Selasky 6628e6e287fSHans Petter Selasky wc[npolled++] = soft_wc->wc; 6638e6e287fSHans Petter Selasky list_del(&soft_wc->list); 6648e6e287fSHans Petter Selasky kfree(soft_wc); 6658e6e287fSHans Petter Selasky } 6668e6e287fSHans Petter Selasky 6678e6e287fSHans Petter Selasky return npolled; 6688e6e287fSHans Petter Selasky } 6698e6e287fSHans Petter Selasky 67012515907SHans Petter Selasky int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) 67112515907SHans Petter Selasky { 67212515907SHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 67312515907SHans Petter Selasky struct mlx5_ib_qp *cur_qp = NULL; 67412515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 67512515907SHans Petter Selasky struct mlx5_core_dev *mdev = dev->mdev; 67612515907SHans Petter Selasky unsigned long flags; 6778e6e287fSHans Petter Selasky int soft_polled = 0; 67812515907SHans Petter Selasky int npolled; 67912515907SHans Petter Selasky 68012515907SHans Petter Selasky spin_lock_irqsave(&cq->lock, flags); 6816428c27fSHans Petter Selasky if (unlikely(mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)) { 68212515907SHans Petter Selasky mlx5_ib_poll_sw_comp(cq, num_entries, wc, &npolled); 68312515907SHans Petter Selasky goto out; 68412515907SHans Petter Selasky } 68512515907SHans Petter Selasky 6868e6e287fSHans Petter Selasky if (unlikely(!list_empty(&cq->wc_list))) 6878e6e287fSHans Petter Selasky soft_polled = poll_soft_wc(cq, num_entries, wc); 6888e6e287fSHans Petter Selasky 6898e6e287fSHans Petter Selasky for (npolled = 0; npolled < num_entries - soft_polled; npolled++) { 6908e6e287fSHans Petter Selasky if (mlx5_poll_one(cq, &cur_qp, wc + soft_polled + npolled)) 69112515907SHans Petter Selasky break; 69212515907SHans Petter Selasky } 69312515907SHans Petter Selasky 69412515907SHans Petter Selasky if (npolled) 69512515907SHans Petter Selasky mlx5_cq_set_ci(&cq->mcq); 69612515907SHans Petter Selasky out: 69712515907SHans Petter Selasky spin_unlock_irqrestore(&cq->lock, flags); 69812515907SHans Petter Selasky 6998e6e287fSHans Petter Selasky return soft_polled + npolled; 70012515907SHans Petter Selasky } 70112515907SHans Petter Selasky 70212515907SHans Petter Selasky int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) 70312515907SHans Petter Selasky { 70412515907SHans Petter Selasky struct mlx5_core_dev *mdev = to_mdev(ibcq->device)->mdev; 7058e6e287fSHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 706f8f5b459SHans Petter Selasky void __iomem *uar_page = mdev->priv.uar->map; 7078e6e287fSHans Petter Selasky unsigned long irq_flags; 7088e6e287fSHans Petter Selasky int ret = 0; 70912515907SHans Petter Selasky 7106428c27fSHans Petter Selasky if (unlikely(mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)) 7116428c27fSHans Petter Selasky return -1; 7126428c27fSHans Petter Selasky 7138e6e287fSHans Petter Selasky spin_lock_irqsave(&cq->lock, irq_flags); 7148e6e287fSHans Petter Selasky if (cq->notify_flags != IB_CQ_NEXT_COMP) 7158e6e287fSHans Petter Selasky cq->notify_flags = flags & IB_CQ_SOLICITED_MASK; 71612515907SHans Petter Selasky 7178e6e287fSHans Petter Selasky if ((flags & IB_CQ_REPORT_MISSED_EVENTS) && !list_empty(&cq->wc_list)) 7188e6e287fSHans Petter Selasky ret = 1; 7198e6e287fSHans Petter Selasky spin_unlock_irqrestore(&cq->lock, irq_flags); 7208e6e287fSHans Petter Selasky 7218e6e287fSHans Petter Selasky mlx5_cq_arm(&cq->mcq, 72212515907SHans Petter Selasky (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ? 72312515907SHans Petter Selasky MLX5_CQ_DB_REQ_NOT_SOL : MLX5_CQ_DB_REQ_NOT, 72412515907SHans Petter Selasky uar_page, 72512515907SHans Petter Selasky MLX5_GET_DOORBELL_LOCK(&mdev->priv.cq_uar_lock), 7266428c27fSHans Petter Selasky cq->mcq.cons_index); 72712515907SHans Petter Selasky 7288e6e287fSHans Petter Selasky return ret; 72912515907SHans Petter Selasky } 73012515907SHans Petter Selasky 73112515907SHans Petter Selasky static int alloc_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf, 73212515907SHans Petter Selasky int nent, int cqe_size) 73312515907SHans Petter Selasky { 73412515907SHans Petter Selasky int err; 73512515907SHans Petter Selasky 73612515907SHans Petter Selasky err = mlx5_buf_alloc(dev->mdev, nent * cqe_size, 7378e6e287fSHans Petter Selasky 2 * PAGE_SIZE, &buf->buf); 7388e6e287fSHans Petter Selasky if (err) 73912515907SHans Petter Selasky return err; 74012515907SHans Petter Selasky 74112515907SHans Petter Selasky buf->cqe_size = cqe_size; 74212515907SHans Petter Selasky buf->nent = nent; 74312515907SHans Petter Selasky 74412515907SHans Petter Selasky return 0; 74512515907SHans Petter Selasky } 74612515907SHans Petter Selasky 74712515907SHans Petter Selasky static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata, 748b633e08cSHans Petter Selasky struct mlx5_ib_cq *cq, int entries, u32 **cqb, 74912515907SHans Petter Selasky int *cqe_size, int *index, int *inlen) 75012515907SHans Petter Selasky { 751b633e08cSHans Petter Selasky struct mlx5_ib_create_cq ucmd = {}; 75212515907SHans Petter Selasky size_t ucmdlen; 75312515907SHans Petter Selasky int page_shift; 7548e6e287fSHans Petter Selasky __be64 *pas; 75512515907SHans Petter Selasky int npages; 75612515907SHans Petter Selasky int ncont; 7578e6e287fSHans Petter Selasky void *cqc; 75812515907SHans Petter Selasky int err; 759b633e08cSHans Petter Selasky struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context( 760b633e08cSHans Petter Selasky udata, struct mlx5_ib_ucontext, ibucontext); 76112515907SHans Petter Selasky 762f8f5b459SHans Petter Selasky ucmdlen = min(udata->inlen, sizeof(ucmd)); 763f8f5b459SHans Petter Selasky if (ucmdlen < offsetof(struct mlx5_ib_create_cq, flags)) 764f8f5b459SHans Petter Selasky return -EINVAL; 76512515907SHans Petter Selasky 7668e6e287fSHans Petter Selasky if (ib_copy_from_udata(&ucmd, udata, ucmdlen)) 76712515907SHans Petter Selasky return -EFAULT; 76812515907SHans Petter Selasky 769f8f5b459SHans Petter Selasky if ((ucmd.flags & ~(MLX5_IB_CREATE_CQ_FLAGS_UAR_PAGE_INDEX))) 77012515907SHans Petter Selasky return -EINVAL; 77112515907SHans Petter Selasky 7728e6e287fSHans Petter Selasky if (ucmd.cqe_size != 64 && ucmd.cqe_size != 128) 77312515907SHans Petter Selasky return -EINVAL; 77412515907SHans Petter Selasky 77512515907SHans Petter Selasky *cqe_size = ucmd.cqe_size; 77612515907SHans Petter Selasky 777b633e08cSHans Petter Selasky cq->buf.umem = ib_umem_get(&context->ibucontext, ucmd.buf_addr, 77812515907SHans Petter Selasky entries * ucmd.cqe_size, 77912515907SHans Petter Selasky IB_ACCESS_LOCAL_WRITE, 1); 78012515907SHans Petter Selasky if (IS_ERR(cq->buf.umem)) { 78112515907SHans Petter Selasky err = PTR_ERR(cq->buf.umem); 78212515907SHans Petter Selasky return err; 78312515907SHans Petter Selasky } 78412515907SHans Petter Selasky 785b633e08cSHans Petter Selasky err = mlx5_ib_db_map_user(context, ucmd.db_addr, 78612515907SHans Petter Selasky &cq->db); 7878e6e287fSHans Petter Selasky if (err) 78812515907SHans Petter Selasky goto err_umem; 78912515907SHans Petter Selasky 790565cb4e8SHans Petter Selasky mlx5_ib_cont_pages(cq->buf.umem, ucmd.buf_addr, 0, &npages, &page_shift, 79112515907SHans Petter Selasky &ncont, NULL); 79212515907SHans Petter Selasky mlx5_ib_dbg(dev, "addr 0x%llx, size %u, npages %d, page_shift %d, ncont %d\n", 7938e6e287fSHans Petter Selasky (long long)ucmd.buf_addr, entries * ucmd.cqe_size, npages, page_shift, ncont); 79412515907SHans Petter Selasky 7958e6e287fSHans Petter Selasky *inlen = MLX5_ST_SZ_BYTES(create_cq_in) + 7968e6e287fSHans Petter Selasky MLX5_FLD_SZ_BYTES(create_cq_in, pas[0]) * ncont; 79712515907SHans Petter Selasky *cqb = mlx5_vzalloc(*inlen); 79812515907SHans Petter Selasky if (!*cqb) { 79912515907SHans Petter Selasky err = -ENOMEM; 80012515907SHans Petter Selasky goto err_db; 80112515907SHans Petter Selasky } 80212515907SHans Petter Selasky 8038e6e287fSHans Petter Selasky pas = (__be64 *)MLX5_ADDR_OF(create_cq_in, *cqb, pas); 8048e6e287fSHans Petter Selasky mlx5_ib_populate_pas(dev, cq->buf.umem, page_shift, pas, 0); 8058e6e287fSHans Petter Selasky 8068e6e287fSHans Petter Selasky cqc = MLX5_ADDR_OF(create_cq_in, *cqb, cq_context); 8078e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_page_size, 8088e6e287fSHans Petter Selasky page_shift - MLX5_ADAPTER_PAGE_SHIFT); 80912515907SHans Petter Selasky 810f8f5b459SHans Petter Selasky if (ucmd.flags & MLX5_IB_CREATE_CQ_FLAGS_UAR_PAGE_INDEX) { 811f8f5b459SHans Petter Selasky *index = ucmd.uar_page_index; 812b633e08cSHans Petter Selasky } else if (context->bfregi.lib_uar_dyn) { 813f8f5b459SHans Petter Selasky err = -EINVAL; 814f8f5b459SHans Petter Selasky goto err_cqb; 815f8f5b459SHans Petter Selasky } else { 816b633e08cSHans Petter Selasky *index = context->bfregi.sys_pages[0]; 817f8f5b459SHans Petter Selasky } 81812515907SHans Petter Selasky 819b633e08cSHans Petter Selasky MLX5_SET(create_cq_in, *cqb, uid, context->devx_uid); 82012515907SHans Petter Selasky return 0; 82112515907SHans Petter Selasky 822f8f5b459SHans Petter Selasky err_cqb: 823f8f5b459SHans Petter Selasky kvfree(*cqb); 824f8f5b459SHans Petter Selasky 82512515907SHans Petter Selasky err_db: 826b633e08cSHans Petter Selasky mlx5_ib_db_unmap_user(context, &cq->db); 82712515907SHans Petter Selasky 82812515907SHans Petter Selasky err_umem: 82912515907SHans Petter Selasky ib_umem_release(cq->buf.umem); 83012515907SHans Petter Selasky return err; 83112515907SHans Petter Selasky } 83212515907SHans Petter Selasky 833b633e08cSHans Petter Selasky static void destroy_cq_user(struct mlx5_ib_cq *cq, struct ib_udata *udata) 83412515907SHans Petter Selasky { 835b633e08cSHans Petter Selasky struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context( 836b633e08cSHans Petter Selasky udata, struct mlx5_ib_ucontext, ibucontext); 837b633e08cSHans Petter Selasky 838b633e08cSHans Petter Selasky mlx5_ib_db_unmap_user(context, &cq->db); 83912515907SHans Petter Selasky ib_umem_release(cq->buf.umem); 84012515907SHans Petter Selasky } 84112515907SHans Petter Selasky 84212515907SHans Petter Selasky static void init_cq_buf(struct mlx5_ib_cq *cq, struct mlx5_ib_cq_buf *buf) 84312515907SHans Petter Selasky { 84412515907SHans Petter Selasky int i; 84512515907SHans Petter Selasky void *cqe; 84612515907SHans Petter Selasky struct mlx5_cqe64 *cqe64; 84712515907SHans Petter Selasky 84812515907SHans Petter Selasky for (i = 0; i < buf->nent; i++) { 84912515907SHans Petter Selasky cqe = get_cqe_from_buf(buf, i, buf->cqe_size); 85012515907SHans Petter Selasky cqe64 = buf->cqe_size == 64 ? cqe : cqe + 64; 85112515907SHans Petter Selasky cqe64->op_own = MLX5_CQE_INVALID << 4; 85212515907SHans Petter Selasky } 85312515907SHans Petter Selasky } 85412515907SHans Petter Selasky 85512515907SHans Petter Selasky static int create_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq, 85612515907SHans Petter Selasky int entries, int cqe_size, 8578e6e287fSHans Petter Selasky u32 **cqb, int *index, int *inlen) 85812515907SHans Petter Selasky { 8598e6e287fSHans Petter Selasky __be64 *pas; 8608e6e287fSHans Petter Selasky void *cqc; 86112515907SHans Petter Selasky int err; 86212515907SHans Petter Selasky 86312515907SHans Petter Selasky err = mlx5_db_alloc(dev->mdev, &cq->db); 86412515907SHans Petter Selasky if (err) 86512515907SHans Petter Selasky return err; 86612515907SHans Petter Selasky 86712515907SHans Petter Selasky cq->mcq.set_ci_db = cq->db.db; 86812515907SHans Petter Selasky cq->mcq.arm_db = cq->db.db + 1; 86912515907SHans Petter Selasky cq->mcq.cqe_sz = cqe_size; 87012515907SHans Petter Selasky 87112515907SHans Petter Selasky err = alloc_cq_buf(dev, &cq->buf, entries, cqe_size); 87212515907SHans Petter Selasky if (err) 87312515907SHans Petter Selasky goto err_db; 87412515907SHans Petter Selasky 87512515907SHans Petter Selasky init_cq_buf(cq, &cq->buf); 87612515907SHans Petter Selasky 8778e6e287fSHans Petter Selasky *inlen = MLX5_ST_SZ_BYTES(create_cq_in) + 8788e6e287fSHans Petter Selasky MLX5_FLD_SZ_BYTES(create_cq_in, pas[0]) * cq->buf.buf.npages; 87912515907SHans Petter Selasky *cqb = mlx5_vzalloc(*inlen); 88012515907SHans Petter Selasky if (!*cqb) { 88112515907SHans Petter Selasky err = -ENOMEM; 88212515907SHans Petter Selasky goto err_buf; 88312515907SHans Petter Selasky } 88412515907SHans Petter Selasky 8858e6e287fSHans Petter Selasky pas = (__be64 *)MLX5_ADDR_OF(create_cq_in, *cqb, pas); 8868e6e287fSHans Petter Selasky mlx5_fill_page_array(&cq->buf.buf, pas); 8878e6e287fSHans Petter Selasky 8888e6e287fSHans Petter Selasky cqc = MLX5_ADDR_OF(create_cq_in, *cqb, cq_context); 8898e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_page_size, 8908e6e287fSHans Petter Selasky cq->buf.buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT); 8918e6e287fSHans Petter Selasky 892f8f5b459SHans Petter Selasky *index = dev->mdev->priv.uar->index; 89312515907SHans Petter Selasky 89412515907SHans Petter Selasky return 0; 89512515907SHans Petter Selasky 89612515907SHans Petter Selasky err_buf: 89712515907SHans Petter Selasky free_cq_buf(dev, &cq->buf); 89812515907SHans Petter Selasky 89912515907SHans Petter Selasky err_db: 90012515907SHans Petter Selasky mlx5_db_free(dev->mdev, &cq->db); 90112515907SHans Petter Selasky return err; 90212515907SHans Petter Selasky } 90312515907SHans Petter Selasky 90412515907SHans Petter Selasky static void destroy_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq) 90512515907SHans Petter Selasky { 90612515907SHans Petter Selasky free_cq_buf(dev, &cq->buf); 90712515907SHans Petter Selasky mlx5_db_free(dev->mdev, &cq->db); 90812515907SHans Petter Selasky } 90912515907SHans Petter Selasky 9108e6e287fSHans Petter Selasky static void notify_soft_wc_handler(struct work_struct *work) 9118e6e287fSHans Petter Selasky { 9128e6e287fSHans Petter Selasky struct mlx5_ib_cq *cq = container_of(work, struct mlx5_ib_cq, 9138e6e287fSHans Petter Selasky notify_work); 9148e6e287fSHans Petter Selasky 9158e6e287fSHans Petter Selasky cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); 9168e6e287fSHans Petter Selasky } 9178e6e287fSHans Petter Selasky 918b633e08cSHans Petter Selasky int mlx5_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 91912515907SHans Petter Selasky struct ib_udata *udata) 92012515907SHans Petter Selasky { 921b633e08cSHans Petter Selasky struct ib_device *ibdev = ibcq->device; 92212515907SHans Petter Selasky int entries = attr->cqe; 92312515907SHans Petter Selasky int vector = attr->comp_vector; 9248e6e287fSHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(ibdev); 925ffdb195fSHans Petter Selasky u32 out[MLX5_ST_SZ_DW(create_cq_out)]; 926b633e08cSHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 92712515907SHans Petter Selasky int uninitialized_var(index); 92812515907SHans Petter Selasky int uninitialized_var(inlen); 9298e6e287fSHans Petter Selasky u32 *cqb = NULL; 9308e6e287fSHans Petter Selasky void *cqc; 93112515907SHans Petter Selasky int cqe_size; 9328e6e287fSHans Petter Selasky unsigned int irqn; 93312515907SHans Petter Selasky int eqn; 93412515907SHans Petter Selasky int err; 93512515907SHans Petter Selasky 9368e6e287fSHans Petter Selasky if (entries < 0 || 9378e6e287fSHans Petter Selasky (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)))) 938b633e08cSHans Petter Selasky return -EINVAL; 9398e6e287fSHans Petter Selasky 9408e6e287fSHans Petter Selasky if (check_cq_create_flags(attr->flags)) 941b633e08cSHans Petter Selasky return -EOPNOTSUPP; 94212515907SHans Petter Selasky 94312515907SHans Petter Selasky entries = roundup_pow_of_two(entries + 1); 9448e6e287fSHans Petter Selasky if (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz))) 945b633e08cSHans Petter Selasky return -EINVAL; 94612515907SHans Petter Selasky 94712515907SHans Petter Selasky cq->ibcq.cqe = entries - 1; 94812515907SHans Petter Selasky mutex_init(&cq->resize_mutex); 94912515907SHans Petter Selasky spin_lock_init(&cq->lock); 95012515907SHans Petter Selasky cq->resize_buf = NULL; 95112515907SHans Petter Selasky cq->resize_umem = NULL; 9528e6e287fSHans Petter Selasky cq->create_flags = attr->flags; 95312515907SHans Petter Selasky INIT_LIST_HEAD(&cq->list_send_qp); 95412515907SHans Petter Selasky INIT_LIST_HEAD(&cq->list_recv_qp); 95512515907SHans Petter Selasky 956b633e08cSHans Petter Selasky if (udata) { 957b633e08cSHans Petter Selasky err = create_cq_user(dev, udata, cq, entries, &cqb, &cqe_size, 958b633e08cSHans Petter Selasky &index, &inlen); 95912515907SHans Petter Selasky if (err) 960b633e08cSHans Petter Selasky return err; 96112515907SHans Petter Selasky } else { 9628e6e287fSHans Petter Selasky cqe_size = cache_line_size() == 128 ? 128 : 64; 96312515907SHans Petter Selasky err = create_cq_kernel(dev, cq, entries, cqe_size, &cqb, 96412515907SHans Petter Selasky &index, &inlen); 96512515907SHans Petter Selasky if (err) 966b633e08cSHans Petter Selasky return err; 9678e6e287fSHans Petter Selasky 9688e6e287fSHans Petter Selasky INIT_WORK(&cq->notify_work, notify_soft_wc_handler); 96912515907SHans Petter Selasky } 97012515907SHans Petter Selasky 97112515907SHans Petter Selasky err = mlx5_vector2eqn(dev->mdev, vector, &eqn, &irqn); 97212515907SHans Petter Selasky if (err) 97312515907SHans Petter Selasky goto err_cqb; 97412515907SHans Petter Selasky 9758e6e287fSHans Petter Selasky cq->cqe_size = cqe_size; 97612515907SHans Petter Selasky 9778e6e287fSHans Petter Selasky cqc = MLX5_ADDR_OF(create_cq_in, cqb, cq_context); 9788e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, cqe_sz, cqe_sz_to_mlx_sz(cqe_size)); 9798e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_cq_size, ilog2(entries)); 9808e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, uar_page, index); 9818e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, c_eqn, eqn); 9828e6e287fSHans Petter Selasky MLX5_SET64(cqc, cqc, dbr_addr, cq->db.dma); 9838e6e287fSHans Petter Selasky if (cq->create_flags & IB_CQ_FLAGS_IGNORE_OVERRUN) 9848e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, oi, 1); 9858e6e287fSHans Petter Selasky 986ffdb195fSHans Petter Selasky err = mlx5_core_create_cq(dev->mdev, &cq->mcq, cqb, inlen, out, sizeof(out)); 98712515907SHans Petter Selasky if (err) 98812515907SHans Petter Selasky goto err_cqb; 98912515907SHans Petter Selasky 99012515907SHans Petter Selasky mlx5_ib_dbg(dev, "cqn 0x%x\n", cq->mcq.cqn); 99112515907SHans Petter Selasky cq->mcq.irqn = irqn; 99212515907SHans Petter Selasky cq->mcq.comp = mlx5_ib_cq_comp; 99312515907SHans Petter Selasky cq->mcq.event = mlx5_ib_cq_event; 99412515907SHans Petter Selasky 9958e6e287fSHans Petter Selasky INIT_LIST_HEAD(&cq->wc_list); 9968e6e287fSHans Petter Selasky 997b633e08cSHans Petter Selasky if (udata) 99812515907SHans Petter Selasky if (ib_copy_to_udata(udata, &cq->mcq.cqn, sizeof(__u32))) { 99912515907SHans Petter Selasky err = -EFAULT; 100012515907SHans Petter Selasky goto err_cmd; 100112515907SHans Petter Selasky } 100212515907SHans Petter Selasky 100312515907SHans Petter Selasky 100412515907SHans Petter Selasky kvfree(cqb); 1005b633e08cSHans Petter Selasky return 0; 100612515907SHans Petter Selasky 100712515907SHans Petter Selasky err_cmd: 100812515907SHans Petter Selasky mlx5_core_destroy_cq(dev->mdev, &cq->mcq); 100912515907SHans Petter Selasky 101012515907SHans Petter Selasky err_cqb: 101112515907SHans Petter Selasky kvfree(cqb); 1012b633e08cSHans Petter Selasky if (udata) 1013b633e08cSHans Petter Selasky destroy_cq_user(cq, udata); 101412515907SHans Petter Selasky else 101512515907SHans Petter Selasky destroy_cq_kernel(dev, cq); 1016b633e08cSHans Petter Selasky return err; 101712515907SHans Petter Selasky } 101812515907SHans Petter Selasky 1019b633e08cSHans Petter Selasky void mlx5_ib_destroy_cq(struct ib_cq *cq, struct ib_udata *udata) 102012515907SHans Petter Selasky { 102112515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->device); 102212515907SHans Petter Selasky struct mlx5_ib_cq *mcq = to_mcq(cq); 102312515907SHans Petter Selasky 102412515907SHans Petter Selasky mlx5_core_destroy_cq(dev->mdev, &mcq->mcq); 1025b633e08cSHans Petter Selasky if (udata) 1026b633e08cSHans Petter Selasky destroy_cq_user(mcq, udata); 102712515907SHans Petter Selasky else 102812515907SHans Petter Selasky destroy_cq_kernel(dev, mcq); 102912515907SHans Petter Selasky } 103012515907SHans Petter Selasky 103112515907SHans Petter Selasky static int is_equal_rsn(struct mlx5_cqe64 *cqe64, u32 rsn) 103212515907SHans Petter Selasky { 103312515907SHans Petter Selasky return rsn == (ntohl(cqe64->sop_drop_qpn) & 0xffffff); 103412515907SHans Petter Selasky } 103512515907SHans Petter Selasky 103612515907SHans Petter Selasky void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 rsn, struct mlx5_ib_srq *srq) 103712515907SHans Petter Selasky { 103812515907SHans Petter Selasky struct mlx5_cqe64 *cqe64, *dest64; 103912515907SHans Petter Selasky void *cqe, *dest; 104012515907SHans Petter Selasky u32 prod_index; 104112515907SHans Petter Selasky int nfreed = 0; 104212515907SHans Petter Selasky u8 owner_bit; 104312515907SHans Petter Selasky 104412515907SHans Petter Selasky if (!cq) 104512515907SHans Petter Selasky return; 104612515907SHans Petter Selasky 104712515907SHans Petter Selasky /* First we need to find the current producer index, so we 104812515907SHans Petter Selasky * know where to start cleaning from. It doesn't matter if HW 104912515907SHans Petter Selasky * adds new entries after this loop -- the QP we're worried 105012515907SHans Petter Selasky * about is already in RESET, so the new entries won't come 105112515907SHans Petter Selasky * from our QP and therefore don't need to be checked. 105212515907SHans Petter Selasky */ 105312515907SHans Petter Selasky for (prod_index = cq->mcq.cons_index; get_sw_cqe(cq, prod_index); prod_index++) 105412515907SHans Petter Selasky if (prod_index == cq->mcq.cons_index + cq->ibcq.cqe) 105512515907SHans Petter Selasky break; 105612515907SHans Petter Selasky 105712515907SHans Petter Selasky /* Now sweep backwards through the CQ, removing CQ entries 105812515907SHans Petter Selasky * that match our QP by copying older entries on top of them. 105912515907SHans Petter Selasky */ 106012515907SHans Petter Selasky while ((int) --prod_index - (int) cq->mcq.cons_index >= 0) { 106112515907SHans Petter Selasky cqe = get_cqe(cq, prod_index & cq->ibcq.cqe); 106212515907SHans Petter Selasky cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64; 106312515907SHans Petter Selasky if (is_equal_rsn(cqe64, rsn)) { 106412515907SHans Petter Selasky if (srq && (ntohl(cqe64->srqn) & 0xffffff)) 106512515907SHans Petter Selasky mlx5_ib_free_srq_wqe(srq, be16_to_cpu(cqe64->wqe_counter)); 106612515907SHans Petter Selasky ++nfreed; 106712515907SHans Petter Selasky } else if (nfreed) { 106812515907SHans Petter Selasky dest = get_cqe(cq, (prod_index + nfreed) & cq->ibcq.cqe); 106912515907SHans Petter Selasky dest64 = (cq->mcq.cqe_sz == 64) ? dest : dest + 64; 107012515907SHans Petter Selasky owner_bit = dest64->op_own & MLX5_CQE_OWNER_MASK; 107112515907SHans Petter Selasky memcpy(dest, cqe, cq->mcq.cqe_sz); 107212515907SHans Petter Selasky dest64->op_own = owner_bit | 107312515907SHans Petter Selasky (dest64->op_own & ~MLX5_CQE_OWNER_MASK); 107412515907SHans Petter Selasky } 107512515907SHans Petter Selasky } 107612515907SHans Petter Selasky 107712515907SHans Petter Selasky if (nfreed) { 107812515907SHans Petter Selasky cq->mcq.cons_index += nfreed; 107912515907SHans Petter Selasky /* Make sure update of buffer contents is done before 108012515907SHans Petter Selasky * updating consumer index. 108112515907SHans Petter Selasky */ 108212515907SHans Petter Selasky wmb(); 108312515907SHans Petter Selasky mlx5_cq_set_ci(&cq->mcq); 108412515907SHans Petter Selasky } 108512515907SHans Petter Selasky } 108612515907SHans Petter Selasky 108712515907SHans Petter Selasky void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq) 108812515907SHans Petter Selasky { 108912515907SHans Petter Selasky if (!cq) 109012515907SHans Petter Selasky return; 109112515907SHans Petter Selasky 109212515907SHans Petter Selasky spin_lock_irq(&cq->lock); 109312515907SHans Petter Selasky __mlx5_ib_cq_clean(cq, qpn, srq); 109412515907SHans Petter Selasky spin_unlock_irq(&cq->lock); 109512515907SHans Petter Selasky } 109612515907SHans Petter Selasky 10978e6e287fSHans Petter Selasky int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) 109812515907SHans Petter Selasky { 109912515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->device); 110012515907SHans Petter Selasky struct mlx5_ib_cq *mcq = to_mcq(cq); 110112515907SHans Petter Selasky int err; 110212515907SHans Petter Selasky 11038e6e287fSHans Petter Selasky if (!MLX5_CAP_GEN(dev->mdev, cq_moderation)) 11048e6e287fSHans Petter Selasky return -ENOSYS; 110512515907SHans Petter Selasky 11068e6e287fSHans Petter Selasky err = mlx5_core_modify_cq_moderation(dev->mdev, &mcq->mcq, 11078e6e287fSHans Petter Selasky cq_period, cq_count); 110812515907SHans Petter Selasky if (err) 110912515907SHans Petter Selasky mlx5_ib_warn(dev, "modify cq 0x%x failed\n", mcq->mcq.cqn); 111012515907SHans Petter Selasky 111112515907SHans Petter Selasky return err; 111212515907SHans Petter Selasky } 111312515907SHans Petter Selasky 111412515907SHans Petter Selasky static int resize_user(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq, 111512515907SHans Petter Selasky int entries, struct ib_udata *udata, int *npas, 111612515907SHans Petter Selasky int *page_shift, int *cqe_size) 111712515907SHans Petter Selasky { 111812515907SHans Petter Selasky struct mlx5_ib_resize_cq ucmd; 111912515907SHans Petter Selasky struct ib_umem *umem; 112012515907SHans Petter Selasky int err; 112112515907SHans Petter Selasky int npages; 112212515907SHans Petter Selasky struct ib_ucontext *context = cq->buf.umem->context; 112312515907SHans Petter Selasky 112412515907SHans Petter Selasky err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)); 112512515907SHans Petter Selasky if (err) 112612515907SHans Petter Selasky return err; 112712515907SHans Petter Selasky 112812515907SHans Petter Selasky if (ucmd.reserved0 || ucmd.reserved1) 112912515907SHans Petter Selasky return -EINVAL; 113012515907SHans Petter Selasky 11312bf40c36SSlava Shwartsman /* check multiplication overflow */ 11322bf40c36SSlava Shwartsman if (ucmd.cqe_size && SIZE_MAX / ucmd.cqe_size <= entries - 1) 11332bf40c36SSlava Shwartsman return -EINVAL; 11342bf40c36SSlava Shwartsman 11352bf40c36SSlava Shwartsman umem = ib_umem_get(context, ucmd.buf_addr, 11362bf40c36SSlava Shwartsman (size_t)ucmd.cqe_size * entries, 113712515907SHans Petter Selasky IB_ACCESS_LOCAL_WRITE, 1); 113812515907SHans Petter Selasky if (IS_ERR(umem)) { 113912515907SHans Petter Selasky err = PTR_ERR(umem); 114012515907SHans Petter Selasky return err; 114112515907SHans Petter Selasky } 114212515907SHans Petter Selasky 1143565cb4e8SHans Petter Selasky mlx5_ib_cont_pages(umem, ucmd.buf_addr, 0, &npages, page_shift, 114412515907SHans Petter Selasky npas, NULL); 114512515907SHans Petter Selasky 114612515907SHans Petter Selasky cq->resize_umem = umem; 114712515907SHans Petter Selasky *cqe_size = ucmd.cqe_size; 114812515907SHans Petter Selasky 114912515907SHans Petter Selasky return 0; 115012515907SHans Petter Selasky } 115112515907SHans Petter Selasky 115212515907SHans Petter Selasky static void un_resize_user(struct mlx5_ib_cq *cq) 115312515907SHans Petter Selasky { 115412515907SHans Petter Selasky ib_umem_release(cq->resize_umem); 115512515907SHans Petter Selasky } 115612515907SHans Petter Selasky 115712515907SHans Petter Selasky static int resize_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq, 115812515907SHans Petter Selasky int entries, int cqe_size) 115912515907SHans Petter Selasky { 116012515907SHans Petter Selasky int err; 116112515907SHans Petter Selasky 116212515907SHans Petter Selasky cq->resize_buf = kzalloc(sizeof(*cq->resize_buf), GFP_KERNEL); 116312515907SHans Petter Selasky if (!cq->resize_buf) 116412515907SHans Petter Selasky return -ENOMEM; 116512515907SHans Petter Selasky 116612515907SHans Petter Selasky err = alloc_cq_buf(dev, cq->resize_buf, entries, cqe_size); 116712515907SHans Petter Selasky if (err) 116812515907SHans Petter Selasky goto ex; 116912515907SHans Petter Selasky 117012515907SHans Petter Selasky init_cq_buf(cq, cq->resize_buf); 117112515907SHans Petter Selasky 117212515907SHans Petter Selasky return 0; 117312515907SHans Petter Selasky 117412515907SHans Petter Selasky ex: 117512515907SHans Petter Selasky kfree(cq->resize_buf); 117612515907SHans Petter Selasky return err; 117712515907SHans Petter Selasky } 117812515907SHans Petter Selasky 117912515907SHans Petter Selasky static void un_resize_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq) 118012515907SHans Petter Selasky { 118112515907SHans Petter Selasky free_cq_buf(dev, cq->resize_buf); 118212515907SHans Petter Selasky cq->resize_buf = NULL; 118312515907SHans Petter Selasky } 118412515907SHans Petter Selasky 118512515907SHans Petter Selasky static int copy_resize_cqes(struct mlx5_ib_cq *cq) 118612515907SHans Petter Selasky { 118712515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 118812515907SHans Petter Selasky struct mlx5_cqe64 *scqe64; 118912515907SHans Petter Selasky struct mlx5_cqe64 *dcqe64; 119012515907SHans Petter Selasky void *start_cqe; 119112515907SHans Petter Selasky void *scqe; 119212515907SHans Petter Selasky void *dcqe; 119312515907SHans Petter Selasky int ssize; 119412515907SHans Petter Selasky int dsize; 119512515907SHans Petter Selasky int i; 119612515907SHans Petter Selasky u8 sw_own; 119712515907SHans Petter Selasky 119812515907SHans Petter Selasky ssize = cq->buf.cqe_size; 119912515907SHans Petter Selasky dsize = cq->resize_buf->cqe_size; 120012515907SHans Petter Selasky if (ssize != dsize) { 120112515907SHans Petter Selasky mlx5_ib_warn(dev, "resize from different cqe size is not supported\n"); 120212515907SHans Petter Selasky return -EINVAL; 120312515907SHans Petter Selasky } 120412515907SHans Petter Selasky 120512515907SHans Petter Selasky i = cq->mcq.cons_index; 120612515907SHans Petter Selasky scqe = get_sw_cqe(cq, i); 120712515907SHans Petter Selasky scqe64 = ssize == 64 ? scqe : scqe + 64; 120812515907SHans Petter Selasky start_cqe = scqe; 120912515907SHans Petter Selasky if (!scqe) { 121012515907SHans Petter Selasky mlx5_ib_warn(dev, "expected cqe in sw ownership\n"); 121112515907SHans Petter Selasky return -EINVAL; 121212515907SHans Petter Selasky } 121312515907SHans Petter Selasky 121412515907SHans Petter Selasky while ((scqe64->op_own >> 4) != MLX5_CQE_RESIZE_CQ) { 121512515907SHans Petter Selasky dcqe = get_cqe_from_buf(cq->resize_buf, 121612515907SHans Petter Selasky (i + 1) & (cq->resize_buf->nent), 121712515907SHans Petter Selasky dsize); 121812515907SHans Petter Selasky dcqe64 = dsize == 64 ? dcqe : dcqe + 64; 121912515907SHans Petter Selasky sw_own = sw_ownership_bit(i + 1, cq->resize_buf->nent); 122012515907SHans Petter Selasky memcpy(dcqe, scqe, dsize); 122112515907SHans Petter Selasky dcqe64->op_own = (dcqe64->op_own & ~MLX5_CQE_OWNER_MASK) | sw_own; 122212515907SHans Petter Selasky 122312515907SHans Petter Selasky ++i; 122412515907SHans Petter Selasky scqe = get_sw_cqe(cq, i); 122512515907SHans Petter Selasky scqe64 = ssize == 64 ? scqe : scqe + 64; 122612515907SHans Petter Selasky if (!scqe) { 122712515907SHans Petter Selasky mlx5_ib_warn(dev, "expected cqe in sw ownership\n"); 122812515907SHans Petter Selasky return -EINVAL; 122912515907SHans Petter Selasky } 123012515907SHans Petter Selasky 123112515907SHans Petter Selasky if (scqe == start_cqe) { 12328e6e287fSHans Petter Selasky pr_warn("resize CQ failed to get resize CQE, CQN 0x%x\n", 12338e6e287fSHans Petter Selasky cq->mcq.cqn); 123412515907SHans Petter Selasky return -ENOMEM; 123512515907SHans Petter Selasky } 123612515907SHans Petter Selasky } 123712515907SHans Petter Selasky ++cq->mcq.cons_index; 123812515907SHans Petter Selasky return 0; 123912515907SHans Petter Selasky } 124012515907SHans Petter Selasky 124112515907SHans Petter Selasky int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 124212515907SHans Petter Selasky { 124312515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(ibcq->device); 124412515907SHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 12458e6e287fSHans Petter Selasky void *cqc; 12468e6e287fSHans Petter Selasky u32 *in; 124712515907SHans Petter Selasky int err; 124812515907SHans Petter Selasky int npas; 12498e6e287fSHans Petter Selasky __be64 *pas; 125012515907SHans Petter Selasky int page_shift; 125112515907SHans Petter Selasky int inlen; 125212515907SHans Petter Selasky int uninitialized_var(cqe_size); 125312515907SHans Petter Selasky unsigned long flags; 125412515907SHans Petter Selasky 125512515907SHans Petter Selasky if (!MLX5_CAP_GEN(dev->mdev, cq_resize)) { 12568e6e287fSHans Petter Selasky pr_info("Firmware does not support resize CQ\n"); 125712515907SHans Petter Selasky return -ENOSYS; 125812515907SHans Petter Selasky } 125912515907SHans Petter Selasky 12608e6e287fSHans Petter Selasky if (entries < 1 || 12618e6e287fSHans Petter Selasky entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz))) { 12628e6e287fSHans Petter Selasky mlx5_ib_warn(dev, "wrong entries number %d, max %d\n", 12638e6e287fSHans Petter Selasky entries, 126412515907SHans Petter Selasky 1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)); 126512515907SHans Petter Selasky return -EINVAL; 126612515907SHans Petter Selasky } 126712515907SHans Petter Selasky 126812515907SHans Petter Selasky entries = roundup_pow_of_two(entries + 1); 12698e6e287fSHans Petter Selasky if (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)) + 1) 12708e6e287fSHans Petter Selasky return -EINVAL; 127112515907SHans Petter Selasky 127212515907SHans Petter Selasky if (entries == ibcq->cqe + 1) 127312515907SHans Petter Selasky return 0; 127412515907SHans Petter Selasky 127512515907SHans Petter Selasky mutex_lock(&cq->resize_mutex); 127612515907SHans Petter Selasky if (udata) { 127712515907SHans Petter Selasky err = resize_user(dev, cq, entries, udata, &npas, &page_shift, 127812515907SHans Petter Selasky &cqe_size); 127912515907SHans Petter Selasky } else { 128012515907SHans Petter Selasky cqe_size = 64; 128112515907SHans Petter Selasky err = resize_kernel(dev, cq, entries, cqe_size); 128212515907SHans Petter Selasky if (!err) { 128312515907SHans Petter Selasky npas = cq->resize_buf->buf.npages; 128412515907SHans Petter Selasky page_shift = cq->resize_buf->buf.page_shift; 128512515907SHans Petter Selasky } 128612515907SHans Petter Selasky } 128712515907SHans Petter Selasky 12888e6e287fSHans Petter Selasky if (err) 128912515907SHans Petter Selasky goto ex; 129012515907SHans Petter Selasky 12918e6e287fSHans Petter Selasky inlen = MLX5_ST_SZ_BYTES(modify_cq_in) + 12928e6e287fSHans Petter Selasky MLX5_FLD_SZ_BYTES(modify_cq_in, pas[0]) * npas; 12938e6e287fSHans Petter Selasky 129412515907SHans Petter Selasky in = mlx5_vzalloc(inlen); 129512515907SHans Petter Selasky if (!in) { 129612515907SHans Petter Selasky err = -ENOMEM; 129712515907SHans Petter Selasky goto ex_resize; 129812515907SHans Petter Selasky } 129912515907SHans Petter Selasky 13008e6e287fSHans Petter Selasky pas = (__be64 *)MLX5_ADDR_OF(modify_cq_in, in, pas); 130112515907SHans Petter Selasky if (udata) 130212515907SHans Petter Selasky mlx5_ib_populate_pas(dev, cq->resize_umem, page_shift, 13038e6e287fSHans Petter Selasky pas, 0); 130412515907SHans Petter Selasky else 13058e6e287fSHans Petter Selasky mlx5_fill_page_array(&cq->resize_buf->buf, pas); 130612515907SHans Petter Selasky 13078e6e287fSHans Petter Selasky MLX5_SET(modify_cq_in, in, 13088e6e287fSHans Petter Selasky modify_field_select_resize_field_select.resize_field_select.resize_field_select, 13098e6e287fSHans Petter Selasky MLX5_MODIFY_CQ_MASK_LOG_SIZE | 131012515907SHans Petter Selasky MLX5_MODIFY_CQ_MASK_PG_OFFSET | 131112515907SHans Petter Selasky MLX5_MODIFY_CQ_MASK_PG_SIZE); 131212515907SHans Petter Selasky 13138e6e287fSHans Petter Selasky cqc = MLX5_ADDR_OF(modify_cq_in, in, cq_context); 13148e6e287fSHans Petter Selasky 13158e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_page_size, 13168e6e287fSHans Petter Selasky page_shift - MLX5_ADAPTER_PAGE_SHIFT); 13178e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, cqe_sz, cqe_sz_to_mlx_sz(cqe_size)); 13188e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_cq_size, ilog2(entries)); 13198e6e287fSHans Petter Selasky 13208e6e287fSHans Petter Selasky MLX5_SET(modify_cq_in, in, op_mod, MLX5_CQ_OPMOD_RESIZE); 13218e6e287fSHans Petter Selasky MLX5_SET(modify_cq_in, in, cqn, cq->mcq.cqn); 13228e6e287fSHans Petter Selasky 1323788333d9SHans Petter Selasky err = mlx5_core_modify_cq(dev->mdev, &cq->mcq, in, inlen); 13248e6e287fSHans Petter Selasky if (err) 132512515907SHans Petter Selasky goto ex_alloc; 132612515907SHans Petter Selasky 132712515907SHans Petter Selasky if (udata) { 132812515907SHans Petter Selasky cq->ibcq.cqe = entries - 1; 132912515907SHans Petter Selasky ib_umem_release(cq->buf.umem); 133012515907SHans Petter Selasky cq->buf.umem = cq->resize_umem; 133112515907SHans Petter Selasky cq->resize_umem = NULL; 133212515907SHans Petter Selasky } else { 133312515907SHans Petter Selasky struct mlx5_ib_cq_buf tbuf; 133412515907SHans Petter Selasky int resized = 0; 133512515907SHans Petter Selasky 133612515907SHans Petter Selasky spin_lock_irqsave(&cq->lock, flags); 133712515907SHans Petter Selasky if (cq->resize_buf) { 133812515907SHans Petter Selasky err = copy_resize_cqes(cq); 133912515907SHans Petter Selasky if (!err) { 134012515907SHans Petter Selasky tbuf = cq->buf; 134112515907SHans Petter Selasky cq->buf = *cq->resize_buf; 134212515907SHans Petter Selasky kfree(cq->resize_buf); 134312515907SHans Petter Selasky cq->resize_buf = NULL; 134412515907SHans Petter Selasky resized = 1; 134512515907SHans Petter Selasky } 134612515907SHans Petter Selasky } 134712515907SHans Petter Selasky cq->ibcq.cqe = entries - 1; 134812515907SHans Petter Selasky spin_unlock_irqrestore(&cq->lock, flags); 134912515907SHans Petter Selasky if (resized) 135012515907SHans Petter Selasky free_cq_buf(dev, &tbuf); 135112515907SHans Petter Selasky } 135212515907SHans Petter Selasky mutex_unlock(&cq->resize_mutex); 135312515907SHans Petter Selasky 135412515907SHans Petter Selasky kvfree(in); 135512515907SHans Petter Selasky return 0; 135612515907SHans Petter Selasky 135712515907SHans Petter Selasky ex_alloc: 135812515907SHans Petter Selasky kvfree(in); 135912515907SHans Petter Selasky 136012515907SHans Petter Selasky ex_resize: 136112515907SHans Petter Selasky if (udata) 136212515907SHans Petter Selasky un_resize_user(cq); 136312515907SHans Petter Selasky else 136412515907SHans Petter Selasky un_resize_kernel(dev, cq); 136512515907SHans Petter Selasky ex: 136612515907SHans Petter Selasky mutex_unlock(&cq->resize_mutex); 136712515907SHans Petter Selasky return err; 136812515907SHans Petter Selasky } 136912515907SHans Petter Selasky 137012515907SHans Petter Selasky int mlx5_ib_get_cqe_size(struct mlx5_ib_dev *dev, struct ib_cq *ibcq) 137112515907SHans Petter Selasky { 137212515907SHans Petter Selasky struct mlx5_ib_cq *cq; 137312515907SHans Petter Selasky 137412515907SHans Petter Selasky if (!ibcq) 137512515907SHans Petter Selasky return 128; 137612515907SHans Petter Selasky 137712515907SHans Petter Selasky cq = to_mcq(ibcq); 137812515907SHans Petter Selasky return cq->cqe_size; 137912515907SHans Petter Selasky } 13808e6e287fSHans Petter Selasky 13818e6e287fSHans Petter Selasky /* Called from atomic context */ 13828e6e287fSHans Petter Selasky int mlx5_ib_generate_wc(struct ib_cq *ibcq, struct ib_wc *wc) 13838e6e287fSHans Petter Selasky { 13848e6e287fSHans Petter Selasky struct mlx5_ib_wc *soft_wc; 13858e6e287fSHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 13868e6e287fSHans Petter Selasky unsigned long flags; 13878e6e287fSHans Petter Selasky 13888e6e287fSHans Petter Selasky soft_wc = kmalloc(sizeof(*soft_wc), GFP_ATOMIC); 13898e6e287fSHans Petter Selasky if (!soft_wc) 13908e6e287fSHans Petter Selasky return -ENOMEM; 13918e6e287fSHans Petter Selasky 13928e6e287fSHans Petter Selasky soft_wc->wc = *wc; 13938e6e287fSHans Petter Selasky spin_lock_irqsave(&cq->lock, flags); 13948e6e287fSHans Petter Selasky list_add_tail(&soft_wc->list, &cq->wc_list); 13958e6e287fSHans Petter Selasky if (cq->notify_flags == IB_CQ_NEXT_COMP || 13968e6e287fSHans Petter Selasky wc->status != IB_WC_SUCCESS) { 13978e6e287fSHans Petter Selasky cq->notify_flags = 0; 13988e6e287fSHans Petter Selasky schedule_work(&cq->notify_work); 13998e6e287fSHans Petter Selasky } 14008e6e287fSHans Petter Selasky spin_unlock_irqrestore(&cq->lock, flags); 14018e6e287fSHans Petter Selasky 14028e6e287fSHans Petter Selasky return 0; 14038e6e287fSHans Petter Selasky } 1404