112515907SHans Petter Selasky /*- 212515907SHans Petter Selasky * Copyright (c) 2013-2015, Mellanox Technologies, Ltd. 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 2812515907SHans Petter Selasky #include <linux/kref.h> 2912515907SHans Petter Selasky #include <rdma/ib_umem.h> 3012515907SHans Petter Selasky #include <rdma/ib_user_verbs.h> 318e6e287fSHans Petter Selasky #include <rdma/ib_cache.h> 3212515907SHans Petter Selasky #include "mlx5_ib.h" 3312515907SHans Petter Selasky 3412515907SHans Petter Selasky static void mlx5_ib_cq_comp(struct mlx5_core_cq *cq) 3512515907SHans Petter Selasky { 3612515907SHans Petter Selasky struct ib_cq *ibcq = &to_mibcq(cq)->ibcq; 3712515907SHans Petter Selasky 3812515907SHans Petter Selasky ibcq->comp_handler(ibcq, ibcq->cq_context); 3912515907SHans Petter Selasky } 4012515907SHans Petter Selasky 4112515907SHans Petter Selasky static void mlx5_ib_cq_event(struct mlx5_core_cq *mcq, int type) 4212515907SHans Petter Selasky { 4312515907SHans Petter Selasky struct mlx5_ib_cq *cq = container_of(mcq, struct mlx5_ib_cq, mcq); 4412515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 4512515907SHans Petter Selasky struct ib_cq *ibcq = &cq->ibcq; 4612515907SHans Petter Selasky struct ib_event event; 4712515907SHans Petter Selasky 4812515907SHans Petter Selasky if (type != MLX5_EVENT_TYPE_CQ_ERROR) { 4912515907SHans Petter Selasky mlx5_ib_warn(dev, "Unexpected event type %d on CQ %06x\n", 5012515907SHans Petter Selasky type, mcq->cqn); 5112515907SHans Petter Selasky return; 5212515907SHans Petter Selasky } 5312515907SHans Petter Selasky 5412515907SHans Petter Selasky if (ibcq->event_handler) { 5512515907SHans Petter Selasky event.device = &dev->ib_dev; 5612515907SHans Petter Selasky event.event = IB_EVENT_CQ_ERR; 5712515907SHans Petter Selasky event.element.cq = ibcq; 5812515907SHans Petter Selasky ibcq->event_handler(&event, ibcq->cq_context); 5912515907SHans Petter Selasky } 6012515907SHans Petter Selasky } 6112515907SHans Petter Selasky 6212515907SHans Petter Selasky static void *get_cqe_from_buf(struct mlx5_ib_cq_buf *buf, int n, int size) 6312515907SHans Petter Selasky { 6412515907SHans Petter Selasky return mlx5_buf_offset(&buf->buf, n * size); 6512515907SHans Petter Selasky } 6612515907SHans Petter Selasky 6712515907SHans Petter Selasky static void *get_cqe(struct mlx5_ib_cq *cq, int n) 6812515907SHans Petter Selasky { 6912515907SHans Petter Selasky return get_cqe_from_buf(&cq->buf, n, cq->mcq.cqe_sz); 7012515907SHans Petter Selasky } 7112515907SHans Petter Selasky 7212515907SHans Petter Selasky static u8 sw_ownership_bit(int n, int nent) 7312515907SHans Petter Selasky { 7412515907SHans Petter Selasky return (n & nent) ? 1 : 0; 7512515907SHans Petter Selasky } 7612515907SHans Petter Selasky 7712515907SHans Petter Selasky static void *get_sw_cqe(struct mlx5_ib_cq *cq, int n) 7812515907SHans Petter Selasky { 7912515907SHans Petter Selasky void *cqe = get_cqe(cq, n & cq->ibcq.cqe); 8012515907SHans Petter Selasky struct mlx5_cqe64 *cqe64; 8112515907SHans Petter Selasky 8212515907SHans Petter Selasky cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64; 8312515907SHans Petter Selasky 8412515907SHans Petter Selasky if (likely((cqe64->op_own) >> 4 != MLX5_CQE_INVALID) && 8512515907SHans Petter Selasky !((cqe64->op_own & MLX5_CQE_OWNER_MASK) ^ !!(n & (cq->ibcq.cqe + 1)))) { 8612515907SHans Petter Selasky return cqe; 8712515907SHans Petter Selasky } else { 8812515907SHans Petter Selasky return NULL; 8912515907SHans Petter Selasky } 9012515907SHans Petter Selasky } 9112515907SHans Petter Selasky 9212515907SHans Petter Selasky static void *next_cqe_sw(struct mlx5_ib_cq *cq) 9312515907SHans Petter Selasky { 9412515907SHans Petter Selasky return get_sw_cqe(cq, cq->mcq.cons_index); 9512515907SHans Petter Selasky } 9612515907SHans Petter Selasky 9712515907SHans Petter Selasky static enum ib_wc_opcode get_umr_comp(struct mlx5_ib_wq *wq, int idx) 9812515907SHans Petter Selasky { 998e6e287fSHans Petter Selasky switch (wq->wr_data[idx]) { 1008e6e287fSHans Petter Selasky case MLX5_IB_WR_UMR: 1018e6e287fSHans Petter Selasky return 0; 1028e6e287fSHans Petter Selasky 10312515907SHans Petter Selasky case IB_WR_LOCAL_INV: 10412515907SHans Petter Selasky return IB_WC_LOCAL_INV; 10512515907SHans Petter Selasky 1068e6e287fSHans Petter Selasky case IB_WR_REG_MR: 1078e6e287fSHans Petter Selasky return IB_WC_REG_MR; 10812515907SHans Petter Selasky 10912515907SHans Petter Selasky default: 1108e6e287fSHans Petter Selasky pr_warn("unknown completion status\n"); 11112515907SHans Petter Selasky return 0; 11212515907SHans Petter Selasky } 11312515907SHans Petter Selasky } 11412515907SHans Petter Selasky 11512515907SHans Petter Selasky static void handle_good_req(struct ib_wc *wc, struct mlx5_cqe64 *cqe, 11612515907SHans Petter Selasky struct mlx5_ib_wq *wq, int idx) 11712515907SHans Petter Selasky { 11812515907SHans Petter Selasky wc->wc_flags = 0; 11912515907SHans Petter Selasky switch (be32_to_cpu(cqe->sop_drop_qpn) >> 24) { 12012515907SHans Petter Selasky case MLX5_OPCODE_RDMA_WRITE_IMM: 12112515907SHans Petter Selasky wc->wc_flags |= IB_WC_WITH_IMM; 12212515907SHans Petter Selasky case MLX5_OPCODE_RDMA_WRITE: 12312515907SHans Petter Selasky wc->opcode = IB_WC_RDMA_WRITE; 12412515907SHans Petter Selasky break; 12512515907SHans Petter Selasky case MLX5_OPCODE_SEND_IMM: 12612515907SHans Petter Selasky wc->wc_flags |= IB_WC_WITH_IMM; 12712515907SHans Petter Selasky case MLX5_OPCODE_SEND: 12812515907SHans Petter Selasky case MLX5_OPCODE_SEND_INVAL: 12912515907SHans Petter Selasky wc->opcode = IB_WC_SEND; 13012515907SHans Petter Selasky break; 13112515907SHans Petter Selasky case MLX5_OPCODE_RDMA_READ: 13212515907SHans Petter Selasky wc->opcode = IB_WC_RDMA_READ; 13312515907SHans Petter Selasky wc->byte_len = be32_to_cpu(cqe->byte_cnt); 13412515907SHans Petter Selasky break; 13512515907SHans Petter Selasky case MLX5_OPCODE_ATOMIC_CS: 13612515907SHans Petter Selasky wc->opcode = IB_WC_COMP_SWAP; 13712515907SHans Petter Selasky wc->byte_len = 8; 13812515907SHans Petter Selasky break; 13912515907SHans Petter Selasky case MLX5_OPCODE_ATOMIC_FA: 14012515907SHans Petter Selasky wc->opcode = IB_WC_FETCH_ADD; 14112515907SHans Petter Selasky wc->byte_len = 8; 14212515907SHans Petter Selasky break; 14312515907SHans Petter Selasky case MLX5_OPCODE_ATOMIC_MASKED_CS: 14412515907SHans Petter Selasky wc->opcode = IB_WC_MASKED_COMP_SWAP; 14512515907SHans Petter Selasky wc->byte_len = 8; 14612515907SHans Petter Selasky break; 14712515907SHans Petter Selasky case MLX5_OPCODE_ATOMIC_MASKED_FA: 14812515907SHans Petter Selasky wc->opcode = IB_WC_MASKED_FETCH_ADD; 14912515907SHans Petter Selasky wc->byte_len = 8; 15012515907SHans Petter Selasky break; 15112515907SHans Petter Selasky case MLX5_OPCODE_UMR: 15212515907SHans Petter Selasky wc->opcode = get_umr_comp(wq, idx); 15312515907SHans Petter Selasky break; 15412515907SHans Petter Selasky } 15512515907SHans Petter Selasky } 15612515907SHans Petter Selasky 15712515907SHans Petter Selasky enum { 15812515907SHans Petter Selasky MLX5_GRH_IN_BUFFER = 1, 15912515907SHans Petter Selasky MLX5_GRH_IN_CQE = 2, 16012515907SHans Petter Selasky }; 16112515907SHans Petter Selasky 16212515907SHans Petter Selasky static void handle_responder(struct ib_wc *wc, struct mlx5_cqe64 *cqe, 16312515907SHans Petter Selasky struct mlx5_ib_qp *qp) 16412515907SHans Petter Selasky { 1658e6e287fSHans Petter Selasky enum rdma_link_layer ll = rdma_port_get_link_layer(qp->ibqp.device, 1); 16612515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device); 16712515907SHans Petter Selasky struct mlx5_ib_srq *srq; 16812515907SHans Petter Selasky struct mlx5_ib_wq *wq; 16912515907SHans Petter Selasky u16 wqe_ctr; 17012515907SHans Petter Selasky u8 g; 17112515907SHans Petter Selasky 17212515907SHans Petter Selasky if (qp->ibqp.srq || qp->ibqp.xrcd) { 17312515907SHans Petter Selasky struct mlx5_core_srq *msrq = NULL; 17412515907SHans Petter Selasky 17512515907SHans Petter Selasky if (qp->ibqp.xrcd) { 17612515907SHans Petter Selasky msrq = mlx5_core_get_srq(dev->mdev, 17712515907SHans Petter Selasky be32_to_cpu(cqe->srqn)); 17812515907SHans Petter Selasky srq = to_mibsrq(msrq); 17912515907SHans Petter Selasky } else { 18012515907SHans Petter Selasky srq = to_msrq(qp->ibqp.srq); 18112515907SHans Petter Selasky } 18212515907SHans Petter Selasky if (srq) { 18312515907SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe->wqe_counter); 18412515907SHans Petter Selasky wc->wr_id = srq->wrid[wqe_ctr]; 18512515907SHans Petter Selasky mlx5_ib_free_srq_wqe(srq, wqe_ctr); 18612515907SHans Petter Selasky if (msrq && atomic_dec_and_test(&msrq->refcount)) 18712515907SHans Petter Selasky complete(&msrq->free); 18812515907SHans Petter Selasky } 18912515907SHans Petter Selasky } else { 19012515907SHans Petter Selasky wq = &qp->rq; 1918e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)]; 19212515907SHans Petter Selasky ++wq->tail; 19312515907SHans Petter Selasky } 19412515907SHans Petter Selasky wc->byte_len = be32_to_cpu(cqe->byte_cnt); 19512515907SHans Petter Selasky 19612515907SHans Petter Selasky switch (cqe->op_own >> 4) { 19712515907SHans Petter Selasky case MLX5_CQE_RESP_WR_IMM: 19812515907SHans Petter Selasky wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; 19912515907SHans Petter Selasky wc->wc_flags = IB_WC_WITH_IMM; 20012515907SHans Petter Selasky wc->ex.imm_data = cqe->imm_inval_pkey; 20112515907SHans Petter Selasky break; 20212515907SHans Petter Selasky case MLX5_CQE_RESP_SEND: 20312515907SHans Petter Selasky wc->opcode = IB_WC_RECV; 2048e6e287fSHans Petter Selasky wc->wc_flags = IB_WC_IP_CSUM_OK; 2058e6e287fSHans Petter Selasky if (unlikely(!((cqe->hds_ip_ext & CQE_L3_OK) && 2068e6e287fSHans Petter Selasky (cqe->hds_ip_ext & CQE_L4_OK)))) 20712515907SHans Petter Selasky wc->wc_flags = 0; 20812515907SHans Petter Selasky break; 20912515907SHans Petter Selasky case MLX5_CQE_RESP_SEND_IMM: 21012515907SHans Petter Selasky wc->opcode = IB_WC_RECV; 21112515907SHans Petter Selasky wc->wc_flags = IB_WC_WITH_IMM; 21212515907SHans Petter Selasky wc->ex.imm_data = cqe->imm_inval_pkey; 21312515907SHans Petter Selasky break; 21412515907SHans Petter Selasky case MLX5_CQE_RESP_SEND_INV: 21512515907SHans Petter Selasky wc->opcode = IB_WC_RECV; 21612515907SHans Petter Selasky wc->wc_flags = IB_WC_WITH_INVALIDATE; 21712515907SHans Petter Selasky wc->ex.invalidate_rkey = be32_to_cpu(cqe->imm_inval_pkey); 21812515907SHans Petter Selasky break; 21912515907SHans Petter Selasky } 22012515907SHans Petter Selasky wc->slid = be16_to_cpu(cqe->slid); 22112515907SHans Petter Selasky wc->sl = (be32_to_cpu(cqe->flags_rqpn) >> 24) & 0xf; 22212515907SHans Petter Selasky wc->src_qp = be32_to_cpu(cqe->flags_rqpn) & 0xffffff; 22312515907SHans Petter Selasky wc->dlid_path_bits = cqe->ml_path; 22412515907SHans Petter Selasky g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3; 22512515907SHans Petter Selasky wc->wc_flags |= g ? IB_WC_GRH : 0; 2268e6e287fSHans Petter Selasky if (unlikely(is_qp1(qp->ibqp.qp_type))) { 2278e6e287fSHans Petter Selasky u16 pkey = be32_to_cpu(cqe->imm_inval_pkey) & 0xffff; 22812515907SHans Petter Selasky 2298e6e287fSHans Petter Selasky ib_find_cached_pkey(&dev->ib_dev, qp->port, pkey, 2308e6e287fSHans Petter Selasky &wc->pkey_index); 2318e6e287fSHans Petter Selasky } else { 2328e6e287fSHans Petter Selasky wc->pkey_index = 0; 2338e6e287fSHans Petter Selasky } 23412515907SHans Petter Selasky 2358e6e287fSHans Petter Selasky if (ll != IB_LINK_LAYER_ETHERNET) 2368e6e287fSHans Petter Selasky return; 2378e6e287fSHans Petter Selasky 2388e6e287fSHans Petter Selasky switch (wc->sl & 0x3) { 2398e6e287fSHans Petter Selasky case MLX5_CQE_ROCE_L3_HEADER_TYPE_GRH: 2408e6e287fSHans Petter Selasky wc->network_hdr_type = RDMA_NETWORK_IB; 2418e6e287fSHans Petter Selasky break; 2428e6e287fSHans Petter Selasky case MLX5_CQE_ROCE_L3_HEADER_TYPE_IPV6: 2438e6e287fSHans Petter Selasky wc->network_hdr_type = RDMA_NETWORK_IPV6; 2448e6e287fSHans Petter Selasky break; 2458e6e287fSHans Petter Selasky case MLX5_CQE_ROCE_L3_HEADER_TYPE_IPV4: 2468e6e287fSHans Petter Selasky wc->network_hdr_type = RDMA_NETWORK_IPV4; 2478e6e287fSHans Petter Selasky break; 2488e6e287fSHans Petter Selasky } 2498e6e287fSHans Petter Selasky wc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE; 25012515907SHans Petter Selasky } 25112515907SHans Petter Selasky 25212515907SHans Petter Selasky static void dump_cqe(struct mlx5_ib_dev *dev, struct mlx5_err_cqe *cqe) 25312515907SHans Petter Selasky { 25412515907SHans Petter Selasky __be32 *p = (__be32 *)cqe; 25512515907SHans Petter Selasky int i; 25612515907SHans Petter Selasky 25712515907SHans Petter Selasky mlx5_ib_warn(dev, "dump error cqe\n"); 25812515907SHans Petter Selasky for (i = 0; i < sizeof(*cqe) / 16; i++, p += 4) 2598e6e287fSHans Petter Selasky pr_info("%08x %08x %08x %08x\n", be32_to_cpu(p[0]), 2608e6e287fSHans Petter Selasky be32_to_cpu(p[1]), be32_to_cpu(p[2]), 2618e6e287fSHans Petter Selasky be32_to_cpu(p[3])); 26212515907SHans Petter Selasky } 26312515907SHans Petter Selasky 26412515907SHans Petter Selasky static void mlx5_handle_error_cqe(struct mlx5_ib_dev *dev, 26512515907SHans Petter Selasky struct mlx5_err_cqe *cqe, 26612515907SHans Petter Selasky struct ib_wc *wc) 26712515907SHans Petter Selasky { 26812515907SHans Petter Selasky int dump = 1; 26912515907SHans Petter Selasky 27012515907SHans Petter Selasky switch (cqe->syndrome) { 27112515907SHans Petter Selasky case MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR: 27212515907SHans Petter Selasky wc->status = IB_WC_LOC_LEN_ERR; 27312515907SHans Petter Selasky break; 27412515907SHans Petter Selasky case MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR: 27512515907SHans Petter Selasky wc->status = IB_WC_LOC_QP_OP_ERR; 27612515907SHans Petter Selasky break; 27712515907SHans Petter Selasky case MLX5_CQE_SYNDROME_LOCAL_PROT_ERR: 27812515907SHans Petter Selasky wc->status = IB_WC_LOC_PROT_ERR; 27912515907SHans Petter Selasky break; 28012515907SHans Petter Selasky case MLX5_CQE_SYNDROME_WR_FLUSH_ERR: 28112515907SHans Petter Selasky dump = 0; 28212515907SHans Petter Selasky wc->status = IB_WC_WR_FLUSH_ERR; 28312515907SHans Petter Selasky break; 28412515907SHans Petter Selasky case MLX5_CQE_SYNDROME_MW_BIND_ERR: 28512515907SHans Petter Selasky wc->status = IB_WC_MW_BIND_ERR; 28612515907SHans Petter Selasky break; 28712515907SHans Petter Selasky case MLX5_CQE_SYNDROME_BAD_RESP_ERR: 28812515907SHans Petter Selasky wc->status = IB_WC_BAD_RESP_ERR; 28912515907SHans Petter Selasky break; 29012515907SHans Petter Selasky case MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR: 29112515907SHans Petter Selasky wc->status = IB_WC_LOC_ACCESS_ERR; 29212515907SHans Petter Selasky break; 29312515907SHans Petter Selasky case MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR: 29412515907SHans Petter Selasky wc->status = IB_WC_REM_INV_REQ_ERR; 29512515907SHans Petter Selasky break; 29612515907SHans Petter Selasky case MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR: 29712515907SHans Petter Selasky wc->status = IB_WC_REM_ACCESS_ERR; 29812515907SHans Petter Selasky break; 29912515907SHans Petter Selasky case MLX5_CQE_SYNDROME_REMOTE_OP_ERR: 30012515907SHans Petter Selasky wc->status = IB_WC_REM_OP_ERR; 30112515907SHans Petter Selasky break; 30212515907SHans Petter Selasky case MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR: 30312515907SHans Petter Selasky wc->status = IB_WC_RETRY_EXC_ERR; 30412515907SHans Petter Selasky dump = 0; 30512515907SHans Petter Selasky break; 30612515907SHans Petter Selasky case MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR: 30712515907SHans Petter Selasky wc->status = IB_WC_RNR_RETRY_EXC_ERR; 30812515907SHans Petter Selasky dump = 0; 30912515907SHans Petter Selasky break; 31012515907SHans Petter Selasky case MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR: 31112515907SHans Petter Selasky wc->status = IB_WC_REM_ABORT_ERR; 31212515907SHans Petter Selasky break; 31312515907SHans Petter Selasky default: 31412515907SHans Petter Selasky wc->status = IB_WC_GENERAL_ERR; 31512515907SHans Petter Selasky break; 31612515907SHans Petter Selasky } 31712515907SHans Petter Selasky 31812515907SHans Petter Selasky wc->vendor_err = cqe->vendor_err_synd; 31912515907SHans Petter Selasky if (dump) 32012515907SHans Petter Selasky dump_cqe(dev, cqe); 32112515907SHans Petter Selasky } 32212515907SHans Petter Selasky 3238e6e287fSHans Petter Selasky static int is_atomic_response(struct mlx5_ib_qp *qp, uint16_t idx) 32412515907SHans Petter Selasky { 32512515907SHans Petter Selasky /* TBD: waiting decision 32612515907SHans Petter Selasky */ 32712515907SHans Petter Selasky return 0; 32812515907SHans Petter Selasky } 32912515907SHans Petter Selasky 3308e6e287fSHans Petter Selasky static void *mlx5_get_atomic_laddr(struct mlx5_ib_qp *qp, uint16_t idx) 33112515907SHans Petter Selasky { 33212515907SHans Petter Selasky struct mlx5_wqe_data_seg *dpseg; 33312515907SHans Petter Selasky void *addr; 33412515907SHans Petter Selasky 33512515907SHans Petter Selasky dpseg = mlx5_get_send_wqe(qp, idx) + sizeof(struct mlx5_wqe_ctrl_seg) + 33612515907SHans Petter Selasky sizeof(struct mlx5_wqe_raddr_seg) + 33712515907SHans Petter Selasky sizeof(struct mlx5_wqe_atomic_seg); 3388e6e287fSHans Petter Selasky addr = (void *)(unsigned long)be64_to_cpu(dpseg->addr); 33912515907SHans Petter Selasky return addr; 34012515907SHans Petter Selasky } 34112515907SHans Petter Selasky 34212515907SHans Petter Selasky static void handle_atomic(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64, 3438e6e287fSHans Petter Selasky uint16_t idx) 34412515907SHans Petter Selasky { 34512515907SHans Petter Selasky void *addr; 34612515907SHans Petter Selasky int byte_count; 34712515907SHans Petter Selasky int i; 34812515907SHans Petter Selasky 34912515907SHans Petter Selasky if (!is_atomic_response(qp, idx)) 35012515907SHans Petter Selasky return; 35112515907SHans Petter Selasky 35212515907SHans Petter Selasky byte_count = be32_to_cpu(cqe64->byte_cnt); 35312515907SHans Petter Selasky addr = mlx5_get_atomic_laddr(qp, idx); 35412515907SHans Petter Selasky 35512515907SHans Petter Selasky if (byte_count == 4) { 3568e6e287fSHans Petter Selasky *(uint32_t *)addr = be32_to_cpu(*((__be32 *)addr)); 35712515907SHans Petter Selasky } else { 35812515907SHans Petter Selasky for (i = 0; i < byte_count; i += 8) { 3598e6e287fSHans Petter Selasky *(uint64_t *)addr = be64_to_cpu(*((__be64 *)addr)); 36012515907SHans Petter Selasky addr += 8; 36112515907SHans Petter Selasky } 36212515907SHans Petter Selasky } 36312515907SHans Petter Selasky 36412515907SHans Petter Selasky return; 36512515907SHans Petter Selasky } 36612515907SHans Petter Selasky 36712515907SHans Petter Selasky static void handle_atomics(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64, 36812515907SHans Petter Selasky u16 tail, u16 head) 36912515907SHans Petter Selasky { 37012515907SHans Petter Selasky u16 idx; 37112515907SHans Petter Selasky 37212515907SHans Petter Selasky do { 37312515907SHans Petter Selasky idx = tail & (qp->sq.wqe_cnt - 1); 37412515907SHans Petter Selasky handle_atomic(qp, cqe64, idx); 37512515907SHans Petter Selasky if (idx == head) 37612515907SHans Petter Selasky break; 37712515907SHans Petter Selasky 3788e6e287fSHans Petter Selasky tail = qp->sq.w_list[idx].next; 37912515907SHans Petter Selasky } while (1); 3808e6e287fSHans Petter Selasky tail = qp->sq.w_list[idx].next; 38112515907SHans Petter Selasky qp->sq.last_poll = tail; 38212515907SHans Petter Selasky } 38312515907SHans Petter Selasky 38412515907SHans Petter Selasky static void free_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf) 38512515907SHans Petter Selasky { 38612515907SHans Petter Selasky mlx5_buf_free(dev->mdev, &buf->buf); 38712515907SHans Petter Selasky } 38812515907SHans Petter Selasky 3898e6e287fSHans Petter Selasky static void get_sig_err_item(struct mlx5_sig_err_cqe *cqe, 3908e6e287fSHans Petter Selasky struct ib_sig_err *item) 3918e6e287fSHans Petter Selasky { 3928e6e287fSHans Petter Selasky u16 syndrome = be16_to_cpu(cqe->syndrome); 3938e6e287fSHans Petter Selasky 3948e6e287fSHans Petter Selasky #define GUARD_ERR (1 << 13) 3958e6e287fSHans Petter Selasky #define APPTAG_ERR (1 << 12) 3968e6e287fSHans Petter Selasky #define REFTAG_ERR (1 << 11) 3978e6e287fSHans Petter Selasky 3988e6e287fSHans Petter Selasky if (syndrome & GUARD_ERR) { 3998e6e287fSHans Petter Selasky item->err_type = IB_SIG_BAD_GUARD; 4008e6e287fSHans Petter Selasky item->expected = be32_to_cpu(cqe->expected_trans_sig) >> 16; 4018e6e287fSHans Petter Selasky item->actual = be32_to_cpu(cqe->actual_trans_sig) >> 16; 4028e6e287fSHans Petter Selasky } else 4038e6e287fSHans Petter Selasky if (syndrome & REFTAG_ERR) { 4048e6e287fSHans Petter Selasky item->err_type = IB_SIG_BAD_REFTAG; 4058e6e287fSHans Petter Selasky item->expected = be32_to_cpu(cqe->expected_reftag); 4068e6e287fSHans Petter Selasky item->actual = be32_to_cpu(cqe->actual_reftag); 4078e6e287fSHans Petter Selasky } else 4088e6e287fSHans Petter Selasky if (syndrome & APPTAG_ERR) { 4098e6e287fSHans Petter Selasky item->err_type = IB_SIG_BAD_APPTAG; 4108e6e287fSHans Petter Selasky item->expected = be32_to_cpu(cqe->expected_trans_sig) & 0xffff; 4118e6e287fSHans Petter Selasky item->actual = be32_to_cpu(cqe->actual_trans_sig) & 0xffff; 4128e6e287fSHans Petter Selasky } else { 4138e6e287fSHans Petter Selasky pr_err("Got signature completion error with bad syndrome %04x\n", 4148e6e287fSHans Petter Selasky syndrome); 4158e6e287fSHans Petter Selasky } 4168e6e287fSHans Petter Selasky 4178e6e287fSHans Petter Selasky item->sig_err_offset = be64_to_cpu(cqe->err_offset); 4188e6e287fSHans Petter Selasky item->key = be32_to_cpu(cqe->mkey); 4198e6e287fSHans Petter Selasky } 4208e6e287fSHans Petter Selasky 42112515907SHans Petter Selasky static void sw_send_comp(struct mlx5_ib_qp *qp, int num_entries, 42212515907SHans Petter Selasky struct ib_wc *wc, int *npolled) 42312515907SHans Petter Selasky { 42412515907SHans Petter Selasky struct mlx5_ib_wq *wq; 4258e6e287fSHans Petter Selasky unsigned int cur; 4268e6e287fSHans Petter Selasky unsigned int idx; 42712515907SHans Petter Selasky int np; 42812515907SHans Petter Selasky int i; 42912515907SHans Petter Selasky 43012515907SHans Petter Selasky wq = &qp->sq; 43112515907SHans Petter Selasky cur = wq->head - wq->tail; 43212515907SHans Petter Selasky np = *npolled; 43312515907SHans Petter Selasky 43412515907SHans Petter Selasky if (cur == 0) 43512515907SHans Petter Selasky return; 43612515907SHans Petter Selasky 43712515907SHans Petter Selasky for (i = 0; i < cur && np < num_entries; i++) { 43812515907SHans Petter Selasky idx = wq->last_poll & (wq->wqe_cnt - 1); 4398e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[idx]; 44012515907SHans Petter Selasky wc->status = IB_WC_WR_FLUSH_ERR; 44112515907SHans Petter Selasky wc->vendor_err = MLX5_CQE_SYNDROME_WR_FLUSH_ERR; 44212515907SHans Petter Selasky wq->tail++; 44312515907SHans Petter Selasky np++; 44412515907SHans Petter Selasky wc->qp = &qp->ibqp; 44512515907SHans Petter Selasky wc++; 4468e6e287fSHans Petter Selasky wq->last_poll = wq->w_list[idx].next; 44712515907SHans Petter Selasky } 44812515907SHans Petter Selasky *npolled = np; 44912515907SHans Petter Selasky } 45012515907SHans Petter Selasky 45112515907SHans Petter Selasky static void sw_recv_comp(struct mlx5_ib_qp *qp, int num_entries, 45212515907SHans Petter Selasky struct ib_wc *wc, int *npolled) 45312515907SHans Petter Selasky { 45412515907SHans Petter Selasky struct mlx5_ib_wq *wq; 4558e6e287fSHans Petter Selasky unsigned int cur; 45612515907SHans Petter Selasky int np; 45712515907SHans Petter Selasky int i; 45812515907SHans Petter Selasky 45912515907SHans Petter Selasky wq = &qp->rq; 46012515907SHans Petter Selasky cur = wq->head - wq->tail; 46112515907SHans Petter Selasky np = *npolled; 46212515907SHans Petter Selasky 46312515907SHans Petter Selasky if (cur == 0) 46412515907SHans Petter Selasky return; 46512515907SHans Petter Selasky 46612515907SHans Petter Selasky for (i = 0; i < cur && np < num_entries; i++) { 4678e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)]; 46812515907SHans Petter Selasky wc->status = IB_WC_WR_FLUSH_ERR; 46912515907SHans Petter Selasky wc->vendor_err = MLX5_CQE_SYNDROME_WR_FLUSH_ERR; 47012515907SHans Petter Selasky wq->tail++; 47112515907SHans Petter Selasky np++; 47212515907SHans Petter Selasky wc->qp = &qp->ibqp; 47312515907SHans Petter Selasky wc++; 47412515907SHans Petter Selasky } 47512515907SHans Petter Selasky *npolled = np; 47612515907SHans Petter Selasky } 47712515907SHans Petter Selasky 47812515907SHans Petter Selasky static void mlx5_ib_poll_sw_comp(struct mlx5_ib_cq *cq, int num_entries, 47912515907SHans Petter Selasky struct ib_wc *wc, int *npolled) 48012515907SHans Petter Selasky { 48112515907SHans Petter Selasky struct mlx5_ib_qp *qp; 48212515907SHans Petter Selasky 48312515907SHans Petter Selasky *npolled = 0; 48412515907SHans Petter Selasky /* Find uncompleted WQEs belonging to that cq and retrun mmics ones */ 48512515907SHans Petter Selasky list_for_each_entry(qp, &cq->list_send_qp, cq_send_list) { 48612515907SHans Petter Selasky sw_send_comp(qp, num_entries, wc + *npolled, npolled); 48712515907SHans Petter Selasky if (*npolled >= num_entries) 48812515907SHans Petter Selasky return; 48912515907SHans Petter Selasky } 49012515907SHans Petter Selasky 49112515907SHans Petter Selasky list_for_each_entry(qp, &cq->list_recv_qp, cq_recv_list) { 49212515907SHans Petter Selasky sw_recv_comp(qp, num_entries, wc + *npolled, npolled); 49312515907SHans Petter Selasky if (*npolled >= num_entries) 49412515907SHans Petter Selasky return; 49512515907SHans Petter Selasky } 49612515907SHans Petter Selasky } 49712515907SHans Petter Selasky 49812515907SHans Petter Selasky static int mlx5_poll_one(struct mlx5_ib_cq *cq, 49912515907SHans Petter Selasky struct mlx5_ib_qp **cur_qp, 50012515907SHans Petter Selasky struct ib_wc *wc) 50112515907SHans Petter Selasky { 50212515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 50312515907SHans Petter Selasky struct mlx5_err_cqe *err_cqe; 50412515907SHans Petter Selasky struct mlx5_cqe64 *cqe64; 50512515907SHans Petter Selasky struct mlx5_core_qp *mqp; 50612515907SHans Petter Selasky struct mlx5_ib_wq *wq; 50712515907SHans Petter Selasky struct mlx5_sig_err_cqe *sig_err_cqe; 5088e6e287fSHans Petter Selasky struct mlx5_core_mr *mmkey; 50912515907SHans Petter Selasky struct mlx5_ib_mr *mr; 51012515907SHans Petter Selasky unsigned long flags; 5118e6e287fSHans Petter Selasky uint8_t opcode; 5128e6e287fSHans Petter Selasky uint32_t qpn; 51312515907SHans Petter Selasky u16 wqe_ctr; 51412515907SHans Petter Selasky void *cqe; 51512515907SHans Petter Selasky int idx; 51612515907SHans Petter Selasky 51712515907SHans Petter Selasky repoll: 51812515907SHans Petter Selasky cqe = next_cqe_sw(cq); 51912515907SHans Petter Selasky if (!cqe) 52012515907SHans Petter Selasky return -EAGAIN; 52112515907SHans Petter Selasky 52212515907SHans Petter Selasky cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64; 52312515907SHans Petter Selasky 52412515907SHans Petter Selasky ++cq->mcq.cons_index; 52512515907SHans Petter Selasky 52612515907SHans Petter Selasky /* Make sure we read CQ entry contents after we've checked the 52712515907SHans Petter Selasky * ownership bit. 52812515907SHans Petter Selasky */ 52912515907SHans Petter Selasky rmb(); 53012515907SHans Petter Selasky 53112515907SHans Petter Selasky opcode = cqe64->op_own >> 4; 53212515907SHans Petter Selasky if (unlikely(opcode == MLX5_CQE_RESIZE_CQ)) { 53312515907SHans Petter Selasky if (likely(cq->resize_buf)) { 53412515907SHans Petter Selasky free_cq_buf(dev, &cq->buf); 53512515907SHans Petter Selasky cq->buf = *cq->resize_buf; 53612515907SHans Petter Selasky kfree(cq->resize_buf); 53712515907SHans Petter Selasky cq->resize_buf = NULL; 53812515907SHans Petter Selasky goto repoll; 53912515907SHans Petter Selasky } else { 54012515907SHans Petter Selasky mlx5_ib_warn(dev, "unexpected resize cqe\n"); 54112515907SHans Petter Selasky } 54212515907SHans Petter Selasky } 54312515907SHans Petter Selasky 54412515907SHans Petter Selasky qpn = ntohl(cqe64->sop_drop_qpn) & 0xffffff; 54512515907SHans Petter Selasky if (!*cur_qp || (qpn != (*cur_qp)->ibqp.qp_num)) { 54612515907SHans Petter Selasky /* We do not have to take the QP table lock here, 54712515907SHans Petter Selasky * because CQs will be locked while QPs are removed 54812515907SHans Petter Selasky * from the table. 54912515907SHans Petter Selasky */ 55012515907SHans Petter Selasky mqp = __mlx5_qp_lookup(dev->mdev, qpn); 55112515907SHans Petter Selasky *cur_qp = to_mibqp(mqp); 55212515907SHans Petter Selasky } 55312515907SHans Petter Selasky 55412515907SHans Petter Selasky wc->qp = &(*cur_qp)->ibqp; 55512515907SHans Petter Selasky switch (opcode) { 55612515907SHans Petter Selasky case MLX5_CQE_REQ: 55712515907SHans Petter Selasky wq = &(*cur_qp)->sq; 55812515907SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe64->wqe_counter); 55912515907SHans Petter Selasky idx = wqe_ctr & (wq->wqe_cnt - 1); 56012515907SHans Petter Selasky handle_good_req(wc, cqe64, wq, idx); 56112515907SHans Petter Selasky handle_atomics(*cur_qp, cqe64, wq->last_poll, idx); 5628e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[idx]; 5638e6e287fSHans Petter Selasky wq->tail = wq->wqe_head[idx] + 1; 56412515907SHans Petter Selasky wc->status = IB_WC_SUCCESS; 56512515907SHans Petter Selasky break; 56612515907SHans Petter Selasky case MLX5_CQE_RESP_WR_IMM: 56712515907SHans Petter Selasky case MLX5_CQE_RESP_SEND: 56812515907SHans Petter Selasky case MLX5_CQE_RESP_SEND_IMM: 56912515907SHans Petter Selasky case MLX5_CQE_RESP_SEND_INV: 57012515907SHans Petter Selasky handle_responder(wc, cqe64, *cur_qp); 57112515907SHans Petter Selasky wc->status = IB_WC_SUCCESS; 57212515907SHans Petter Selasky break; 57312515907SHans Petter Selasky case MLX5_CQE_RESIZE_CQ: 57412515907SHans Petter Selasky break; 57512515907SHans Petter Selasky case MLX5_CQE_REQ_ERR: 57612515907SHans Petter Selasky case MLX5_CQE_RESP_ERR: 57712515907SHans Petter Selasky err_cqe = (struct mlx5_err_cqe *)cqe64; 57812515907SHans Petter Selasky mlx5_handle_error_cqe(dev, err_cqe, wc); 57912515907SHans Petter Selasky mlx5_ib_dbg(dev, "%s error cqe on cqn 0x%x:\n", 58012515907SHans Petter Selasky opcode == MLX5_CQE_REQ_ERR ? 58112515907SHans Petter Selasky "Requestor" : "Responder", cq->mcq.cqn); 58212515907SHans Petter Selasky mlx5_ib_dbg(dev, "syndrome 0x%x, vendor syndrome 0x%x\n", 58312515907SHans Petter Selasky err_cqe->syndrome, err_cqe->vendor_err_synd); 58412515907SHans Petter Selasky if (opcode == MLX5_CQE_REQ_ERR) { 58512515907SHans Petter Selasky wq = &(*cur_qp)->sq; 58612515907SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe64->wqe_counter); 58712515907SHans Petter Selasky idx = wqe_ctr & (wq->wqe_cnt - 1); 5888e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[idx]; 5898e6e287fSHans Petter Selasky wq->tail = wq->wqe_head[idx] + 1; 59012515907SHans Petter Selasky } else { 59112515907SHans Petter Selasky struct mlx5_ib_srq *srq; 59212515907SHans Petter Selasky 59312515907SHans Petter Selasky if ((*cur_qp)->ibqp.srq) { 59412515907SHans Petter Selasky srq = to_msrq((*cur_qp)->ibqp.srq); 59512515907SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe64->wqe_counter); 59612515907SHans Petter Selasky wc->wr_id = srq->wrid[wqe_ctr]; 59712515907SHans Petter Selasky mlx5_ib_free_srq_wqe(srq, wqe_ctr); 59812515907SHans Petter Selasky } else { 59912515907SHans Petter Selasky wq = &(*cur_qp)->rq; 6008e6e287fSHans Petter Selasky wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)]; 60112515907SHans Petter Selasky ++wq->tail; 60212515907SHans Petter Selasky } 60312515907SHans Petter Selasky } 60412515907SHans Petter Selasky break; 60512515907SHans Petter Selasky case MLX5_CQE_SIG_ERR: 60612515907SHans Petter Selasky sig_err_cqe = (struct mlx5_sig_err_cqe *)cqe64; 60712515907SHans Petter Selasky 60812515907SHans Petter Selasky spin_lock_irqsave(&dev->mdev->priv.mr_table.lock, flags); 6098e6e287fSHans Petter Selasky mmkey = __mlx5_mr_lookup(dev->mdev, 6108e6e287fSHans Petter Selasky mlx5_base_mkey(be32_to_cpu(sig_err_cqe->mkey))); 6118e6e287fSHans Petter Selasky mr = to_mibmr(mmkey); 6128e6e287fSHans Petter Selasky get_sig_err_item(sig_err_cqe, &mr->sig->err_item); 61312515907SHans Petter Selasky mr->sig->sig_err_exists = true; 61412515907SHans Petter Selasky mr->sig->sigerr_count++; 61512515907SHans Petter Selasky 6168e6e287fSHans 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", 6178e6e287fSHans Petter Selasky cq->mcq.cqn, mr->sig->err_item.key, 6188e6e287fSHans Petter Selasky mr->sig->err_item.err_type, 6198e6e287fSHans Petter Selasky (long long)mr->sig->err_item.sig_err_offset, 6208e6e287fSHans Petter Selasky mr->sig->err_item.expected, 6218e6e287fSHans Petter Selasky mr->sig->err_item.actual); 62212515907SHans Petter Selasky 62312515907SHans Petter Selasky spin_unlock_irqrestore(&dev->mdev->priv.mr_table.lock, flags); 62412515907SHans Petter Selasky goto repoll; 62512515907SHans Petter Selasky } 62612515907SHans Petter Selasky 62712515907SHans Petter Selasky return 0; 62812515907SHans Petter Selasky } 62912515907SHans Petter Selasky 6308e6e287fSHans Petter Selasky static int poll_soft_wc(struct mlx5_ib_cq *cq, int num_entries, 6318e6e287fSHans Petter Selasky struct ib_wc *wc) 6328e6e287fSHans Petter Selasky { 6338e6e287fSHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 6348e6e287fSHans Petter Selasky struct mlx5_ib_wc *soft_wc, *next; 6358e6e287fSHans Petter Selasky int npolled = 0; 6368e6e287fSHans Petter Selasky 6378e6e287fSHans Petter Selasky list_for_each_entry_safe(soft_wc, next, &cq->wc_list, list) { 6388e6e287fSHans Petter Selasky if (npolled >= num_entries) 6398e6e287fSHans Petter Selasky break; 6408e6e287fSHans Petter Selasky 6418e6e287fSHans Petter Selasky mlx5_ib_dbg(dev, "polled software generated completion on CQ 0x%x\n", 6428e6e287fSHans Petter Selasky cq->mcq.cqn); 6438e6e287fSHans Petter Selasky 6448e6e287fSHans Petter Selasky wc[npolled++] = soft_wc->wc; 6458e6e287fSHans Petter Selasky list_del(&soft_wc->list); 6468e6e287fSHans Petter Selasky kfree(soft_wc); 6478e6e287fSHans Petter Selasky } 6488e6e287fSHans Petter Selasky 6498e6e287fSHans Petter Selasky return npolled; 6508e6e287fSHans Petter Selasky } 6518e6e287fSHans Petter Selasky 65212515907SHans Petter Selasky int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) 65312515907SHans Petter Selasky { 65412515907SHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 65512515907SHans Petter Selasky struct mlx5_ib_qp *cur_qp = NULL; 65612515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 65712515907SHans Petter Selasky struct mlx5_core_dev *mdev = dev->mdev; 65812515907SHans Petter Selasky unsigned long flags; 6598e6e287fSHans Petter Selasky int soft_polled = 0; 66012515907SHans Petter Selasky int npolled; 66112515907SHans Petter Selasky 66212515907SHans Petter Selasky spin_lock_irqsave(&cq->lock, flags); 66312515907SHans Petter Selasky if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { 66412515907SHans Petter Selasky mlx5_ib_poll_sw_comp(cq, num_entries, wc, &npolled); 66512515907SHans Petter Selasky goto out; 66612515907SHans Petter Selasky } 66712515907SHans Petter Selasky 6688e6e287fSHans Petter Selasky if (unlikely(!list_empty(&cq->wc_list))) 6698e6e287fSHans Petter Selasky soft_polled = poll_soft_wc(cq, num_entries, wc); 6708e6e287fSHans Petter Selasky 6718e6e287fSHans Petter Selasky for (npolled = 0; npolled < num_entries - soft_polled; npolled++) { 6728e6e287fSHans Petter Selasky if (mlx5_poll_one(cq, &cur_qp, wc + soft_polled + npolled)) 67312515907SHans Petter Selasky break; 67412515907SHans Petter Selasky } 67512515907SHans Petter Selasky 67612515907SHans Petter Selasky if (npolled) 67712515907SHans Petter Selasky mlx5_cq_set_ci(&cq->mcq); 67812515907SHans Petter Selasky out: 67912515907SHans Petter Selasky spin_unlock_irqrestore(&cq->lock, flags); 68012515907SHans Petter Selasky 6818e6e287fSHans Petter Selasky return soft_polled + npolled; 68212515907SHans Petter Selasky } 68312515907SHans Petter Selasky 68412515907SHans Petter Selasky int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) 68512515907SHans Petter Selasky { 68612515907SHans Petter Selasky struct mlx5_core_dev *mdev = to_mdev(ibcq->device)->mdev; 6878e6e287fSHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 68812515907SHans Petter Selasky void __iomem *uar_page = mdev->priv.uuari.uars[0].map; 6898e6e287fSHans Petter Selasky unsigned long irq_flags; 6908e6e287fSHans Petter Selasky int ret = 0; 69112515907SHans Petter Selasky 6928e6e287fSHans Petter Selasky spin_lock_irqsave(&cq->lock, irq_flags); 6938e6e287fSHans Petter Selasky if (cq->notify_flags != IB_CQ_NEXT_COMP) 6948e6e287fSHans Petter Selasky cq->notify_flags = flags & IB_CQ_SOLICITED_MASK; 69512515907SHans Petter Selasky 6968e6e287fSHans Petter Selasky if ((flags & IB_CQ_REPORT_MISSED_EVENTS) && !list_empty(&cq->wc_list)) 6978e6e287fSHans Petter Selasky ret = 1; 6988e6e287fSHans Petter Selasky spin_unlock_irqrestore(&cq->lock, irq_flags); 6998e6e287fSHans Petter Selasky 7008e6e287fSHans Petter Selasky mlx5_cq_arm(&cq->mcq, 70112515907SHans Petter Selasky (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ? 70212515907SHans Petter Selasky MLX5_CQ_DB_REQ_NOT_SOL : MLX5_CQ_DB_REQ_NOT, 70312515907SHans Petter Selasky uar_page, 70412515907SHans Petter Selasky MLX5_GET_DOORBELL_LOCK(&mdev->priv.cq_uar_lock), 70512515907SHans Petter Selasky to_mcq(ibcq)->mcq.cons_index); 70612515907SHans Petter Selasky 7078e6e287fSHans Petter Selasky return ret; 70812515907SHans Petter Selasky } 70912515907SHans Petter Selasky 71012515907SHans Petter Selasky static int alloc_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf, 71112515907SHans Petter Selasky int nent, int cqe_size) 71212515907SHans Petter Selasky { 71312515907SHans Petter Selasky int err; 71412515907SHans Petter Selasky 71512515907SHans Petter Selasky err = mlx5_buf_alloc(dev->mdev, nent * cqe_size, 7168e6e287fSHans Petter Selasky 2 * PAGE_SIZE, &buf->buf); 7178e6e287fSHans Petter Selasky if (err) 71812515907SHans Petter Selasky return err; 71912515907SHans Petter Selasky 72012515907SHans Petter Selasky buf->cqe_size = cqe_size; 72112515907SHans Petter Selasky buf->nent = nent; 72212515907SHans Petter Selasky 72312515907SHans Petter Selasky return 0; 72412515907SHans Petter Selasky } 72512515907SHans Petter Selasky 72612515907SHans Petter Selasky static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata, 72712515907SHans Petter Selasky struct ib_ucontext *context, struct mlx5_ib_cq *cq, 7288e6e287fSHans Petter Selasky int entries, u32 **cqb, 72912515907SHans Petter Selasky int *cqe_size, int *index, int *inlen) 73012515907SHans Petter Selasky { 7318e6e287fSHans Petter Selasky struct mlx5_ib_create_cq ucmd; 73212515907SHans Petter Selasky size_t ucmdlen; 73312515907SHans Petter Selasky int page_shift; 7348e6e287fSHans Petter Selasky __be64 *pas; 73512515907SHans Petter Selasky int npages; 73612515907SHans Petter Selasky int ncont; 7378e6e287fSHans Petter Selasky void *cqc; 73812515907SHans Petter Selasky int err; 73912515907SHans Petter Selasky 74012515907SHans Petter Selasky ucmdlen = 74112515907SHans Petter Selasky (udata->inlen - sizeof(struct ib_uverbs_cmd_hdr) < 7428e6e287fSHans Petter Selasky sizeof(ucmd)) ? (sizeof(ucmd) - 7438e6e287fSHans Petter Selasky sizeof(ucmd.reserved)) : sizeof(ucmd); 74412515907SHans Petter Selasky 7458e6e287fSHans Petter Selasky if (ib_copy_from_udata(&ucmd, udata, ucmdlen)) 74612515907SHans Petter Selasky return -EFAULT; 74712515907SHans Petter Selasky 7488e6e287fSHans Petter Selasky if (ucmdlen == sizeof(ucmd) && 7498e6e287fSHans Petter Selasky ucmd.reserved != 0) 75012515907SHans Petter Selasky return -EINVAL; 75112515907SHans Petter Selasky 7528e6e287fSHans Petter Selasky if (ucmd.cqe_size != 64 && ucmd.cqe_size != 128) 75312515907SHans Petter Selasky return -EINVAL; 75412515907SHans Petter Selasky 75512515907SHans Petter Selasky *cqe_size = ucmd.cqe_size; 75612515907SHans Petter Selasky 75712515907SHans Petter Selasky cq->buf.umem = ib_umem_get(context, ucmd.buf_addr, 75812515907SHans Petter Selasky entries * ucmd.cqe_size, 75912515907SHans Petter Selasky IB_ACCESS_LOCAL_WRITE, 1); 76012515907SHans Petter Selasky if (IS_ERR(cq->buf.umem)) { 76112515907SHans Petter Selasky err = PTR_ERR(cq->buf.umem); 76212515907SHans Petter Selasky return err; 76312515907SHans Petter Selasky } 76412515907SHans Petter Selasky 76512515907SHans Petter Selasky err = mlx5_ib_db_map_user(to_mucontext(context), ucmd.db_addr, 76612515907SHans Petter Selasky &cq->db); 7678e6e287fSHans Petter Selasky if (err) 76812515907SHans Petter Selasky goto err_umem; 76912515907SHans Petter Selasky 77012515907SHans Petter Selasky mlx5_ib_cont_pages(cq->buf.umem, ucmd.buf_addr, &npages, &page_shift, 77112515907SHans Petter Selasky &ncont, NULL); 77212515907SHans Petter Selasky mlx5_ib_dbg(dev, "addr 0x%llx, size %u, npages %d, page_shift %d, ncont %d\n", 7738e6e287fSHans Petter Selasky (long long)ucmd.buf_addr, entries * ucmd.cqe_size, npages, page_shift, ncont); 77412515907SHans Petter Selasky 7758e6e287fSHans Petter Selasky *inlen = MLX5_ST_SZ_BYTES(create_cq_in) + 7768e6e287fSHans Petter Selasky MLX5_FLD_SZ_BYTES(create_cq_in, pas[0]) * ncont; 77712515907SHans Petter Selasky *cqb = mlx5_vzalloc(*inlen); 77812515907SHans Petter Selasky if (!*cqb) { 77912515907SHans Petter Selasky err = -ENOMEM; 78012515907SHans Petter Selasky goto err_db; 78112515907SHans Petter Selasky } 78212515907SHans Petter Selasky 7838e6e287fSHans Petter Selasky pas = (__be64 *)MLX5_ADDR_OF(create_cq_in, *cqb, pas); 7848e6e287fSHans Petter Selasky mlx5_ib_populate_pas(dev, cq->buf.umem, page_shift, pas, 0); 7858e6e287fSHans Petter Selasky 7868e6e287fSHans Petter Selasky cqc = MLX5_ADDR_OF(create_cq_in, *cqb, cq_context); 7878e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_page_size, 7888e6e287fSHans Petter Selasky page_shift - MLX5_ADAPTER_PAGE_SHIFT); 78912515907SHans Petter Selasky 79012515907SHans Petter Selasky *index = to_mucontext(context)->uuari.uars[0].index; 79112515907SHans Petter Selasky 79212515907SHans Petter Selasky return 0; 79312515907SHans Petter Selasky 79412515907SHans Petter Selasky err_db: 79512515907SHans Petter Selasky mlx5_ib_db_unmap_user(to_mucontext(context), &cq->db); 79612515907SHans Petter Selasky 79712515907SHans Petter Selasky err_umem: 79812515907SHans Petter Selasky ib_umem_release(cq->buf.umem); 79912515907SHans Petter Selasky return err; 80012515907SHans Petter Selasky } 80112515907SHans Petter Selasky 80212515907SHans Petter Selasky static void destroy_cq_user(struct mlx5_ib_cq *cq, struct ib_ucontext *context) 80312515907SHans Petter Selasky { 80412515907SHans Petter Selasky mlx5_ib_db_unmap_user(to_mucontext(context), &cq->db); 80512515907SHans Petter Selasky ib_umem_release(cq->buf.umem); 80612515907SHans Petter Selasky } 80712515907SHans Petter Selasky 80812515907SHans Petter Selasky static void init_cq_buf(struct mlx5_ib_cq *cq, struct mlx5_ib_cq_buf *buf) 80912515907SHans Petter Selasky { 81012515907SHans Petter Selasky int i; 81112515907SHans Petter Selasky void *cqe; 81212515907SHans Petter Selasky struct mlx5_cqe64 *cqe64; 81312515907SHans Petter Selasky 81412515907SHans Petter Selasky for (i = 0; i < buf->nent; i++) { 81512515907SHans Petter Selasky cqe = get_cqe_from_buf(buf, i, buf->cqe_size); 81612515907SHans Petter Selasky cqe64 = buf->cqe_size == 64 ? cqe : cqe + 64; 81712515907SHans Petter Selasky cqe64->op_own = MLX5_CQE_INVALID << 4; 81812515907SHans Petter Selasky } 81912515907SHans Petter Selasky } 82012515907SHans Petter Selasky 82112515907SHans Petter Selasky static int create_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq, 82212515907SHans Petter Selasky int entries, int cqe_size, 8238e6e287fSHans Petter Selasky u32 **cqb, int *index, int *inlen) 82412515907SHans Petter Selasky { 8258e6e287fSHans Petter Selasky __be64 *pas; 8268e6e287fSHans Petter Selasky void *cqc; 82712515907SHans Petter Selasky int err; 82812515907SHans Petter Selasky 82912515907SHans Petter Selasky err = mlx5_db_alloc(dev->mdev, &cq->db); 83012515907SHans Petter Selasky if (err) 83112515907SHans Petter Selasky return err; 83212515907SHans Petter Selasky 83312515907SHans Petter Selasky cq->mcq.set_ci_db = cq->db.db; 83412515907SHans Petter Selasky cq->mcq.arm_db = cq->db.db + 1; 83512515907SHans Petter Selasky cq->mcq.cqe_sz = cqe_size; 83612515907SHans Petter Selasky 83712515907SHans Petter Selasky err = alloc_cq_buf(dev, &cq->buf, entries, cqe_size); 83812515907SHans Petter Selasky if (err) 83912515907SHans Petter Selasky goto err_db; 84012515907SHans Petter Selasky 84112515907SHans Petter Selasky init_cq_buf(cq, &cq->buf); 84212515907SHans Petter Selasky 8438e6e287fSHans Petter Selasky *inlen = MLX5_ST_SZ_BYTES(create_cq_in) + 8448e6e287fSHans Petter Selasky MLX5_FLD_SZ_BYTES(create_cq_in, pas[0]) * cq->buf.buf.npages; 84512515907SHans Petter Selasky *cqb = mlx5_vzalloc(*inlen); 84612515907SHans Petter Selasky if (!*cqb) { 84712515907SHans Petter Selasky err = -ENOMEM; 84812515907SHans Petter Selasky goto err_buf; 84912515907SHans Petter Selasky } 85012515907SHans Petter Selasky 8518e6e287fSHans Petter Selasky pas = (__be64 *)MLX5_ADDR_OF(create_cq_in, *cqb, pas); 8528e6e287fSHans Petter Selasky mlx5_fill_page_array(&cq->buf.buf, pas); 8538e6e287fSHans Petter Selasky 8548e6e287fSHans Petter Selasky cqc = MLX5_ADDR_OF(create_cq_in, *cqb, cq_context); 8558e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_page_size, 8568e6e287fSHans Petter Selasky cq->buf.buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT); 8578e6e287fSHans Petter Selasky 85812515907SHans Petter Selasky *index = dev->mdev->priv.uuari.uars[0].index; 85912515907SHans Petter Selasky 86012515907SHans Petter Selasky return 0; 86112515907SHans Petter Selasky 86212515907SHans Petter Selasky err_buf: 86312515907SHans Petter Selasky free_cq_buf(dev, &cq->buf); 86412515907SHans Petter Selasky 86512515907SHans Petter Selasky err_db: 86612515907SHans Petter Selasky mlx5_db_free(dev->mdev, &cq->db); 86712515907SHans Petter Selasky return err; 86812515907SHans Petter Selasky } 86912515907SHans Petter Selasky 87012515907SHans Petter Selasky static void destroy_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq) 87112515907SHans Petter Selasky { 87212515907SHans Petter Selasky free_cq_buf(dev, &cq->buf); 87312515907SHans Petter Selasky mlx5_db_free(dev->mdev, &cq->db); 87412515907SHans Petter Selasky } 87512515907SHans Petter Selasky 8768e6e287fSHans Petter Selasky static void notify_soft_wc_handler(struct work_struct *work) 8778e6e287fSHans Petter Selasky { 8788e6e287fSHans Petter Selasky struct mlx5_ib_cq *cq = container_of(work, struct mlx5_ib_cq, 8798e6e287fSHans Petter Selasky notify_work); 8808e6e287fSHans Petter Selasky 8818e6e287fSHans Petter Selasky cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); 8828e6e287fSHans Petter Selasky } 8838e6e287fSHans Petter Selasky 88412515907SHans Petter Selasky struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev, 8858e6e287fSHans Petter Selasky const struct ib_cq_init_attr *attr, 88612515907SHans Petter Selasky struct ib_ucontext *context, 88712515907SHans Petter Selasky struct ib_udata *udata) 88812515907SHans Petter Selasky { 88912515907SHans Petter Selasky int entries = attr->cqe; 89012515907SHans Petter Selasky int vector = attr->comp_vector; 8918e6e287fSHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(ibdev); 8928e6e287fSHans Petter Selasky struct mlx5_ib_cq *cq; 89312515907SHans Petter Selasky int uninitialized_var(index); 89412515907SHans Petter Selasky int uninitialized_var(inlen); 8958e6e287fSHans Petter Selasky u32 *cqb = NULL; 8968e6e287fSHans Petter Selasky void *cqc; 89712515907SHans Petter Selasky int cqe_size; 8988e6e287fSHans Petter Selasky unsigned int irqn; 89912515907SHans Petter Selasky int eqn; 90012515907SHans Petter Selasky int err; 90112515907SHans Petter Selasky 9028e6e287fSHans Petter Selasky if (entries < 0 || 9038e6e287fSHans Petter Selasky (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)))) 90412515907SHans Petter Selasky return ERR_PTR(-EINVAL); 9058e6e287fSHans Petter Selasky 9068e6e287fSHans Petter Selasky if (check_cq_create_flags(attr->flags)) 9078e6e287fSHans Petter Selasky return ERR_PTR(-EOPNOTSUPP); 90812515907SHans Petter Selasky 90912515907SHans Petter Selasky entries = roundup_pow_of_two(entries + 1); 9108e6e287fSHans Petter Selasky if (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz))) 9118e6e287fSHans Petter Selasky return ERR_PTR(-EINVAL); 91212515907SHans Petter Selasky 91312515907SHans Petter Selasky cq = kzalloc(sizeof(*cq), GFP_KERNEL); 91412515907SHans Petter Selasky if (!cq) 91512515907SHans Petter Selasky return ERR_PTR(-ENOMEM); 91612515907SHans Petter Selasky 91712515907SHans Petter Selasky cq->ibcq.cqe = entries - 1; 91812515907SHans Petter Selasky mutex_init(&cq->resize_mutex); 91912515907SHans Petter Selasky spin_lock_init(&cq->lock); 92012515907SHans Petter Selasky cq->resize_buf = NULL; 92112515907SHans Petter Selasky cq->resize_umem = NULL; 9228e6e287fSHans Petter Selasky cq->create_flags = attr->flags; 92312515907SHans Petter Selasky INIT_LIST_HEAD(&cq->list_send_qp); 92412515907SHans Petter Selasky INIT_LIST_HEAD(&cq->list_recv_qp); 92512515907SHans Petter Selasky 92612515907SHans Petter Selasky if (context) { 92712515907SHans Petter Selasky err = create_cq_user(dev, udata, context, cq, entries, 92812515907SHans Petter Selasky &cqb, &cqe_size, &index, &inlen); 92912515907SHans Petter Selasky if (err) 93012515907SHans Petter Selasky goto err_create; 93112515907SHans Petter Selasky } else { 9328e6e287fSHans Petter Selasky cqe_size = cache_line_size() == 128 ? 128 : 64; 93312515907SHans Petter Selasky err = create_cq_kernel(dev, cq, entries, cqe_size, &cqb, 93412515907SHans Petter Selasky &index, &inlen); 93512515907SHans Petter Selasky if (err) 93612515907SHans Petter Selasky goto err_create; 9378e6e287fSHans Petter Selasky 9388e6e287fSHans Petter Selasky INIT_WORK(&cq->notify_work, notify_soft_wc_handler); 93912515907SHans Petter Selasky } 94012515907SHans Petter Selasky 94112515907SHans Petter Selasky err = mlx5_vector2eqn(dev->mdev, vector, &eqn, &irqn); 94212515907SHans Petter Selasky if (err) 94312515907SHans Petter Selasky goto err_cqb; 94412515907SHans Petter Selasky 9458e6e287fSHans Petter Selasky cq->cqe_size = cqe_size; 94612515907SHans Petter Selasky 9478e6e287fSHans Petter Selasky cqc = MLX5_ADDR_OF(create_cq_in, cqb, cq_context); 9488e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, cqe_sz, cqe_sz_to_mlx_sz(cqe_size)); 9498e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_cq_size, ilog2(entries)); 9508e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, uar_page, index); 9518e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, c_eqn, eqn); 9528e6e287fSHans Petter Selasky MLX5_SET64(cqc, cqc, dbr_addr, cq->db.dma); 9538e6e287fSHans Petter Selasky if (cq->create_flags & IB_CQ_FLAGS_IGNORE_OVERRUN) 9548e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, oi, 1); 9558e6e287fSHans Petter Selasky 9568e6e287fSHans Petter Selasky err = mlx5_core_create_cq(dev->mdev, &cq->mcq, 9578e6e287fSHans Petter Selasky (struct mlx5_create_cq_mbox_in *)cqb, inlen); 95812515907SHans Petter Selasky if (err) 95912515907SHans Petter Selasky goto err_cqb; 96012515907SHans Petter Selasky 96112515907SHans Petter Selasky mlx5_ib_dbg(dev, "cqn 0x%x\n", cq->mcq.cqn); 96212515907SHans Petter Selasky cq->mcq.irqn = irqn; 96312515907SHans Petter Selasky cq->mcq.comp = mlx5_ib_cq_comp; 96412515907SHans Petter Selasky cq->mcq.event = mlx5_ib_cq_event; 96512515907SHans Petter Selasky 9668e6e287fSHans Petter Selasky INIT_LIST_HEAD(&cq->wc_list); 9678e6e287fSHans Petter Selasky 96812515907SHans Petter Selasky if (context) 96912515907SHans Petter Selasky if (ib_copy_to_udata(udata, &cq->mcq.cqn, sizeof(__u32))) { 97012515907SHans Petter Selasky err = -EFAULT; 97112515907SHans Petter Selasky goto err_cmd; 97212515907SHans Petter Selasky } 97312515907SHans Petter Selasky 97412515907SHans Petter Selasky 97512515907SHans Petter Selasky kvfree(cqb); 97612515907SHans Petter Selasky return &cq->ibcq; 97712515907SHans Petter Selasky 97812515907SHans Petter Selasky err_cmd: 97912515907SHans Petter Selasky mlx5_core_destroy_cq(dev->mdev, &cq->mcq); 98012515907SHans Petter Selasky 98112515907SHans Petter Selasky err_cqb: 98212515907SHans Petter Selasky kvfree(cqb); 98312515907SHans Petter Selasky if (context) 98412515907SHans Petter Selasky destroy_cq_user(cq, context); 98512515907SHans Petter Selasky else 98612515907SHans Petter Selasky destroy_cq_kernel(dev, cq); 98712515907SHans Petter Selasky 98812515907SHans Petter Selasky err_create: 98912515907SHans Petter Selasky kfree(cq); 99012515907SHans Petter Selasky 99112515907SHans Petter Selasky return ERR_PTR(err); 99212515907SHans Petter Selasky } 99312515907SHans Petter Selasky 99412515907SHans Petter Selasky 99512515907SHans Petter Selasky int mlx5_ib_destroy_cq(struct ib_cq *cq) 99612515907SHans Petter Selasky { 99712515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->device); 99812515907SHans Petter Selasky struct mlx5_ib_cq *mcq = to_mcq(cq); 99912515907SHans Petter Selasky struct ib_ucontext *context = NULL; 100012515907SHans Petter Selasky 100112515907SHans Petter Selasky if (cq->uobject) 100212515907SHans Petter Selasky context = cq->uobject->context; 100312515907SHans Petter Selasky 100412515907SHans Petter Selasky mlx5_core_destroy_cq(dev->mdev, &mcq->mcq); 100512515907SHans Petter Selasky if (context) 100612515907SHans Petter Selasky destroy_cq_user(mcq, context); 100712515907SHans Petter Selasky else 100812515907SHans Petter Selasky destroy_cq_kernel(dev, mcq); 100912515907SHans Petter Selasky 101012515907SHans Petter Selasky kfree(mcq); 101112515907SHans Petter Selasky 101212515907SHans Petter Selasky return 0; 101312515907SHans Petter Selasky } 101412515907SHans Petter Selasky 101512515907SHans Petter Selasky static int is_equal_rsn(struct mlx5_cqe64 *cqe64, u32 rsn) 101612515907SHans Petter Selasky { 101712515907SHans Petter Selasky return rsn == (ntohl(cqe64->sop_drop_qpn) & 0xffffff); 101812515907SHans Petter Selasky } 101912515907SHans Petter Selasky 102012515907SHans Petter Selasky void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 rsn, struct mlx5_ib_srq *srq) 102112515907SHans Petter Selasky { 102212515907SHans Petter Selasky struct mlx5_cqe64 *cqe64, *dest64; 102312515907SHans Petter Selasky void *cqe, *dest; 102412515907SHans Petter Selasky u32 prod_index; 102512515907SHans Petter Selasky int nfreed = 0; 102612515907SHans Petter Selasky u8 owner_bit; 102712515907SHans Petter Selasky 102812515907SHans Petter Selasky if (!cq) 102912515907SHans Petter Selasky return; 103012515907SHans Petter Selasky 103112515907SHans Petter Selasky /* First we need to find the current producer index, so we 103212515907SHans Petter Selasky * know where to start cleaning from. It doesn't matter if HW 103312515907SHans Petter Selasky * adds new entries after this loop -- the QP we're worried 103412515907SHans Petter Selasky * about is already in RESET, so the new entries won't come 103512515907SHans Petter Selasky * from our QP and therefore don't need to be checked. 103612515907SHans Petter Selasky */ 103712515907SHans Petter Selasky for (prod_index = cq->mcq.cons_index; get_sw_cqe(cq, prod_index); prod_index++) 103812515907SHans Petter Selasky if (prod_index == cq->mcq.cons_index + cq->ibcq.cqe) 103912515907SHans Petter Selasky break; 104012515907SHans Petter Selasky 104112515907SHans Petter Selasky /* Now sweep backwards through the CQ, removing CQ entries 104212515907SHans Petter Selasky * that match our QP by copying older entries on top of them. 104312515907SHans Petter Selasky */ 104412515907SHans Petter Selasky while ((int) --prod_index - (int) cq->mcq.cons_index >= 0) { 104512515907SHans Petter Selasky cqe = get_cqe(cq, prod_index & cq->ibcq.cqe); 104612515907SHans Petter Selasky cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64; 104712515907SHans Petter Selasky if (is_equal_rsn(cqe64, rsn)) { 104812515907SHans Petter Selasky if (srq && (ntohl(cqe64->srqn) & 0xffffff)) 104912515907SHans Petter Selasky mlx5_ib_free_srq_wqe(srq, be16_to_cpu(cqe64->wqe_counter)); 105012515907SHans Petter Selasky ++nfreed; 105112515907SHans Petter Selasky } else if (nfreed) { 105212515907SHans Petter Selasky dest = get_cqe(cq, (prod_index + nfreed) & cq->ibcq.cqe); 105312515907SHans Petter Selasky dest64 = (cq->mcq.cqe_sz == 64) ? dest : dest + 64; 105412515907SHans Petter Selasky owner_bit = dest64->op_own & MLX5_CQE_OWNER_MASK; 105512515907SHans Petter Selasky memcpy(dest, cqe, cq->mcq.cqe_sz); 105612515907SHans Petter Selasky dest64->op_own = owner_bit | 105712515907SHans Petter Selasky (dest64->op_own & ~MLX5_CQE_OWNER_MASK); 105812515907SHans Petter Selasky } 105912515907SHans Petter Selasky } 106012515907SHans Petter Selasky 106112515907SHans Petter Selasky if (nfreed) { 106212515907SHans Petter Selasky cq->mcq.cons_index += nfreed; 106312515907SHans Petter Selasky /* Make sure update of buffer contents is done before 106412515907SHans Petter Selasky * updating consumer index. 106512515907SHans Petter Selasky */ 106612515907SHans Petter Selasky wmb(); 106712515907SHans Petter Selasky mlx5_cq_set_ci(&cq->mcq); 106812515907SHans Petter Selasky } 106912515907SHans Petter Selasky } 107012515907SHans Petter Selasky 107112515907SHans Petter Selasky void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq) 107212515907SHans Petter Selasky { 107312515907SHans Petter Selasky if (!cq) 107412515907SHans Petter Selasky return; 107512515907SHans Petter Selasky 107612515907SHans Petter Selasky spin_lock_irq(&cq->lock); 107712515907SHans Petter Selasky __mlx5_ib_cq_clean(cq, qpn, srq); 107812515907SHans Petter Selasky spin_unlock_irq(&cq->lock); 107912515907SHans Petter Selasky } 108012515907SHans Petter Selasky 10818e6e287fSHans Petter Selasky int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) 108212515907SHans Petter Selasky { 108312515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->device); 108412515907SHans Petter Selasky struct mlx5_ib_cq *mcq = to_mcq(cq); 108512515907SHans Petter Selasky int err; 108612515907SHans Petter Selasky 10878e6e287fSHans Petter Selasky if (!MLX5_CAP_GEN(dev->mdev, cq_moderation)) 10888e6e287fSHans Petter Selasky return -ENOSYS; 108912515907SHans Petter Selasky 10908e6e287fSHans Petter Selasky err = mlx5_core_modify_cq_moderation(dev->mdev, &mcq->mcq, 10918e6e287fSHans Petter Selasky cq_period, cq_count); 109212515907SHans Petter Selasky if (err) 109312515907SHans Petter Selasky mlx5_ib_warn(dev, "modify cq 0x%x failed\n", mcq->mcq.cqn); 109412515907SHans Petter Selasky 109512515907SHans Petter Selasky return err; 109612515907SHans Petter Selasky } 109712515907SHans Petter Selasky 109812515907SHans Petter Selasky static int resize_user(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq, 109912515907SHans Petter Selasky int entries, struct ib_udata *udata, int *npas, 110012515907SHans Petter Selasky int *page_shift, int *cqe_size) 110112515907SHans Petter Selasky { 110212515907SHans Petter Selasky struct mlx5_ib_resize_cq ucmd; 110312515907SHans Petter Selasky struct ib_umem *umem; 110412515907SHans Petter Selasky int err; 110512515907SHans Petter Selasky int npages; 110612515907SHans Petter Selasky struct ib_ucontext *context = cq->buf.umem->context; 110712515907SHans Petter Selasky 110812515907SHans Petter Selasky err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)); 110912515907SHans Petter Selasky if (err) 111012515907SHans Petter Selasky return err; 111112515907SHans Petter Selasky 111212515907SHans Petter Selasky if (ucmd.reserved0 || ucmd.reserved1) 111312515907SHans Petter Selasky return -EINVAL; 111412515907SHans Petter Selasky 111512515907SHans Petter Selasky umem = ib_umem_get(context, ucmd.buf_addr, entries * ucmd.cqe_size, 111612515907SHans Petter Selasky IB_ACCESS_LOCAL_WRITE, 1); 111712515907SHans Petter Selasky if (IS_ERR(umem)) { 111812515907SHans Petter Selasky err = PTR_ERR(umem); 111912515907SHans Petter Selasky return err; 112012515907SHans Petter Selasky } 112112515907SHans Petter Selasky 112212515907SHans Petter Selasky mlx5_ib_cont_pages(umem, ucmd.buf_addr, &npages, page_shift, 112312515907SHans Petter Selasky npas, NULL); 112412515907SHans Petter Selasky 112512515907SHans Petter Selasky cq->resize_umem = umem; 112612515907SHans Petter Selasky *cqe_size = ucmd.cqe_size; 112712515907SHans Petter Selasky 112812515907SHans Petter Selasky return 0; 112912515907SHans Petter Selasky } 113012515907SHans Petter Selasky 113112515907SHans Petter Selasky static void un_resize_user(struct mlx5_ib_cq *cq) 113212515907SHans Petter Selasky { 113312515907SHans Petter Selasky ib_umem_release(cq->resize_umem); 113412515907SHans Petter Selasky } 113512515907SHans Petter Selasky 113612515907SHans Petter Selasky static int resize_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq, 113712515907SHans Petter Selasky int entries, int cqe_size) 113812515907SHans Petter Selasky { 113912515907SHans Petter Selasky int err; 114012515907SHans Petter Selasky 114112515907SHans Petter Selasky cq->resize_buf = kzalloc(sizeof(*cq->resize_buf), GFP_KERNEL); 114212515907SHans Petter Selasky if (!cq->resize_buf) 114312515907SHans Petter Selasky return -ENOMEM; 114412515907SHans Petter Selasky 114512515907SHans Petter Selasky err = alloc_cq_buf(dev, cq->resize_buf, entries, cqe_size); 114612515907SHans Petter Selasky if (err) 114712515907SHans Petter Selasky goto ex; 114812515907SHans Petter Selasky 114912515907SHans Petter Selasky init_cq_buf(cq, cq->resize_buf); 115012515907SHans Petter Selasky 115112515907SHans Petter Selasky return 0; 115212515907SHans Petter Selasky 115312515907SHans Petter Selasky ex: 115412515907SHans Petter Selasky kfree(cq->resize_buf); 115512515907SHans Petter Selasky return err; 115612515907SHans Petter Selasky } 115712515907SHans Petter Selasky 115812515907SHans Petter Selasky static void un_resize_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq) 115912515907SHans Petter Selasky { 116012515907SHans Petter Selasky free_cq_buf(dev, cq->resize_buf); 116112515907SHans Petter Selasky cq->resize_buf = NULL; 116212515907SHans Petter Selasky } 116312515907SHans Petter Selasky 116412515907SHans Petter Selasky static int copy_resize_cqes(struct mlx5_ib_cq *cq) 116512515907SHans Petter Selasky { 116612515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device); 116712515907SHans Petter Selasky struct mlx5_cqe64 *scqe64; 116812515907SHans Petter Selasky struct mlx5_cqe64 *dcqe64; 116912515907SHans Petter Selasky void *start_cqe; 117012515907SHans Petter Selasky void *scqe; 117112515907SHans Petter Selasky void *dcqe; 117212515907SHans Petter Selasky int ssize; 117312515907SHans Petter Selasky int dsize; 117412515907SHans Petter Selasky int i; 117512515907SHans Petter Selasky u8 sw_own; 117612515907SHans Petter Selasky 117712515907SHans Petter Selasky ssize = cq->buf.cqe_size; 117812515907SHans Petter Selasky dsize = cq->resize_buf->cqe_size; 117912515907SHans Petter Selasky if (ssize != dsize) { 118012515907SHans Petter Selasky mlx5_ib_warn(dev, "resize from different cqe size is not supported\n"); 118112515907SHans Petter Selasky return -EINVAL; 118212515907SHans Petter Selasky } 118312515907SHans Petter Selasky 118412515907SHans Petter Selasky i = cq->mcq.cons_index; 118512515907SHans Petter Selasky scqe = get_sw_cqe(cq, i); 118612515907SHans Petter Selasky scqe64 = ssize == 64 ? scqe : scqe + 64; 118712515907SHans Petter Selasky start_cqe = scqe; 118812515907SHans Petter Selasky if (!scqe) { 118912515907SHans Petter Selasky mlx5_ib_warn(dev, "expected cqe in sw ownership\n"); 119012515907SHans Petter Selasky return -EINVAL; 119112515907SHans Petter Selasky } 119212515907SHans Petter Selasky 119312515907SHans Petter Selasky while ((scqe64->op_own >> 4) != MLX5_CQE_RESIZE_CQ) { 119412515907SHans Petter Selasky dcqe = get_cqe_from_buf(cq->resize_buf, 119512515907SHans Petter Selasky (i + 1) & (cq->resize_buf->nent), 119612515907SHans Petter Selasky dsize); 119712515907SHans Petter Selasky dcqe64 = dsize == 64 ? dcqe : dcqe + 64; 119812515907SHans Petter Selasky sw_own = sw_ownership_bit(i + 1, cq->resize_buf->nent); 119912515907SHans Petter Selasky memcpy(dcqe, scqe, dsize); 120012515907SHans Petter Selasky dcqe64->op_own = (dcqe64->op_own & ~MLX5_CQE_OWNER_MASK) | sw_own; 120112515907SHans Petter Selasky 120212515907SHans Petter Selasky ++i; 120312515907SHans Petter Selasky scqe = get_sw_cqe(cq, i); 120412515907SHans Petter Selasky scqe64 = ssize == 64 ? scqe : scqe + 64; 120512515907SHans Petter Selasky if (!scqe) { 120612515907SHans Petter Selasky mlx5_ib_warn(dev, "expected cqe in sw ownership\n"); 120712515907SHans Petter Selasky return -EINVAL; 120812515907SHans Petter Selasky } 120912515907SHans Petter Selasky 121012515907SHans Petter Selasky if (scqe == start_cqe) { 12118e6e287fSHans Petter Selasky pr_warn("resize CQ failed to get resize CQE, CQN 0x%x\n", 12128e6e287fSHans Petter Selasky cq->mcq.cqn); 121312515907SHans Petter Selasky return -ENOMEM; 121412515907SHans Petter Selasky } 121512515907SHans Petter Selasky } 121612515907SHans Petter Selasky ++cq->mcq.cons_index; 121712515907SHans Petter Selasky return 0; 121812515907SHans Petter Selasky } 121912515907SHans Petter Selasky 122012515907SHans Petter Selasky int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 122112515907SHans Petter Selasky { 122212515907SHans Petter Selasky struct mlx5_ib_dev *dev = to_mdev(ibcq->device); 122312515907SHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 12248e6e287fSHans Petter Selasky void *cqc; 12258e6e287fSHans Petter Selasky u32 *in; 122612515907SHans Petter Selasky int err; 122712515907SHans Petter Selasky int npas; 12288e6e287fSHans Petter Selasky __be64 *pas; 122912515907SHans Petter Selasky int page_shift; 123012515907SHans Petter Selasky int inlen; 123112515907SHans Petter Selasky int uninitialized_var(cqe_size); 123212515907SHans Petter Selasky unsigned long flags; 123312515907SHans Petter Selasky 123412515907SHans Petter Selasky if (!MLX5_CAP_GEN(dev->mdev, cq_resize)) { 12358e6e287fSHans Petter Selasky pr_info("Firmware does not support resize CQ\n"); 123612515907SHans Petter Selasky return -ENOSYS; 123712515907SHans Petter Selasky } 123812515907SHans Petter Selasky 12398e6e287fSHans Petter Selasky if (entries < 1 || 12408e6e287fSHans Petter Selasky entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz))) { 12418e6e287fSHans Petter Selasky mlx5_ib_warn(dev, "wrong entries number %d, max %d\n", 12428e6e287fSHans Petter Selasky entries, 124312515907SHans Petter Selasky 1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)); 124412515907SHans Petter Selasky return -EINVAL; 124512515907SHans Petter Selasky } 124612515907SHans Petter Selasky 124712515907SHans Petter Selasky entries = roundup_pow_of_two(entries + 1); 12488e6e287fSHans Petter Selasky if (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)) + 1) 12498e6e287fSHans Petter Selasky return -EINVAL; 125012515907SHans Petter Selasky 125112515907SHans Petter Selasky if (entries == ibcq->cqe + 1) 125212515907SHans Petter Selasky return 0; 125312515907SHans Petter Selasky 125412515907SHans Petter Selasky mutex_lock(&cq->resize_mutex); 125512515907SHans Petter Selasky if (udata) { 125612515907SHans Petter Selasky err = resize_user(dev, cq, entries, udata, &npas, &page_shift, 125712515907SHans Petter Selasky &cqe_size); 125812515907SHans Petter Selasky } else { 125912515907SHans Petter Selasky cqe_size = 64; 126012515907SHans Petter Selasky err = resize_kernel(dev, cq, entries, cqe_size); 126112515907SHans Petter Selasky if (!err) { 126212515907SHans Petter Selasky npas = cq->resize_buf->buf.npages; 126312515907SHans Petter Selasky page_shift = cq->resize_buf->buf.page_shift; 126412515907SHans Petter Selasky } 126512515907SHans Petter Selasky } 126612515907SHans Petter Selasky 12678e6e287fSHans Petter Selasky if (err) 126812515907SHans Petter Selasky goto ex; 126912515907SHans Petter Selasky 12708e6e287fSHans Petter Selasky inlen = MLX5_ST_SZ_BYTES(modify_cq_in) + 12718e6e287fSHans Petter Selasky MLX5_FLD_SZ_BYTES(modify_cq_in, pas[0]) * npas; 12728e6e287fSHans Petter Selasky 127312515907SHans Petter Selasky in = mlx5_vzalloc(inlen); 127412515907SHans Petter Selasky if (!in) { 127512515907SHans Petter Selasky err = -ENOMEM; 127612515907SHans Petter Selasky goto ex_resize; 127712515907SHans Petter Selasky } 127812515907SHans Petter Selasky 12798e6e287fSHans Petter Selasky pas = (__be64 *)MLX5_ADDR_OF(modify_cq_in, in, pas); 128012515907SHans Petter Selasky if (udata) 128112515907SHans Petter Selasky mlx5_ib_populate_pas(dev, cq->resize_umem, page_shift, 12828e6e287fSHans Petter Selasky pas, 0); 128312515907SHans Petter Selasky else 12848e6e287fSHans Petter Selasky mlx5_fill_page_array(&cq->resize_buf->buf, pas); 128512515907SHans Petter Selasky 12868e6e287fSHans Petter Selasky MLX5_SET(modify_cq_in, in, 12878e6e287fSHans Petter Selasky modify_field_select_resize_field_select.resize_field_select.resize_field_select, 12888e6e287fSHans Petter Selasky MLX5_MODIFY_CQ_MASK_LOG_SIZE | 128912515907SHans Petter Selasky MLX5_MODIFY_CQ_MASK_PG_OFFSET | 129012515907SHans Petter Selasky MLX5_MODIFY_CQ_MASK_PG_SIZE); 129112515907SHans Petter Selasky 12928e6e287fSHans Petter Selasky cqc = MLX5_ADDR_OF(modify_cq_in, in, cq_context); 12938e6e287fSHans Petter Selasky 12948e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_page_size, 12958e6e287fSHans Petter Selasky page_shift - MLX5_ADAPTER_PAGE_SHIFT); 12968e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, cqe_sz, cqe_sz_to_mlx_sz(cqe_size)); 12978e6e287fSHans Petter Selasky MLX5_SET(cqc, cqc, log_cq_size, ilog2(entries)); 12988e6e287fSHans Petter Selasky 12998e6e287fSHans Petter Selasky MLX5_SET(modify_cq_in, in, op_mod, MLX5_CQ_OPMOD_RESIZE); 13008e6e287fSHans Petter Selasky MLX5_SET(modify_cq_in, in, cqn, cq->mcq.cqn); 13018e6e287fSHans Petter Selasky 13028e6e287fSHans Petter Selasky err = mlx5_core_modify_cq(dev->mdev, &cq->mcq, 13038e6e287fSHans Petter Selasky (struct mlx5_modify_cq_mbox_in *)in, inlen); 13048e6e287fSHans Petter Selasky if (err) 130512515907SHans Petter Selasky goto ex_alloc; 130612515907SHans Petter Selasky 130712515907SHans Petter Selasky if (udata) { 130812515907SHans Petter Selasky cq->ibcq.cqe = entries - 1; 130912515907SHans Petter Selasky ib_umem_release(cq->buf.umem); 131012515907SHans Petter Selasky cq->buf.umem = cq->resize_umem; 131112515907SHans Petter Selasky cq->resize_umem = NULL; 131212515907SHans Petter Selasky } else { 131312515907SHans Petter Selasky struct mlx5_ib_cq_buf tbuf; 131412515907SHans Petter Selasky int resized = 0; 131512515907SHans Petter Selasky 131612515907SHans Petter Selasky spin_lock_irqsave(&cq->lock, flags); 131712515907SHans Petter Selasky if (cq->resize_buf) { 131812515907SHans Petter Selasky err = copy_resize_cqes(cq); 131912515907SHans Petter Selasky if (!err) { 132012515907SHans Petter Selasky tbuf = cq->buf; 132112515907SHans Petter Selasky cq->buf = *cq->resize_buf; 132212515907SHans Petter Selasky kfree(cq->resize_buf); 132312515907SHans Petter Selasky cq->resize_buf = NULL; 132412515907SHans Petter Selasky resized = 1; 132512515907SHans Petter Selasky } 132612515907SHans Petter Selasky } 132712515907SHans Petter Selasky cq->ibcq.cqe = entries - 1; 132812515907SHans Petter Selasky spin_unlock_irqrestore(&cq->lock, flags); 132912515907SHans Petter Selasky if (resized) 133012515907SHans Petter Selasky free_cq_buf(dev, &tbuf); 133112515907SHans Petter Selasky } 133212515907SHans Petter Selasky mutex_unlock(&cq->resize_mutex); 133312515907SHans Petter Selasky 133412515907SHans Petter Selasky kvfree(in); 133512515907SHans Petter Selasky return 0; 133612515907SHans Petter Selasky 133712515907SHans Petter Selasky ex_alloc: 133812515907SHans Petter Selasky kvfree(in); 133912515907SHans Petter Selasky 134012515907SHans Petter Selasky ex_resize: 134112515907SHans Petter Selasky if (udata) 134212515907SHans Petter Selasky un_resize_user(cq); 134312515907SHans Petter Selasky else 134412515907SHans Petter Selasky un_resize_kernel(dev, cq); 134512515907SHans Petter Selasky ex: 134612515907SHans Petter Selasky mutex_unlock(&cq->resize_mutex); 134712515907SHans Petter Selasky return err; 134812515907SHans Petter Selasky } 134912515907SHans Petter Selasky 135012515907SHans Petter Selasky int mlx5_ib_get_cqe_size(struct mlx5_ib_dev *dev, struct ib_cq *ibcq) 135112515907SHans Petter Selasky { 135212515907SHans Petter Selasky struct mlx5_ib_cq *cq; 135312515907SHans Petter Selasky 135412515907SHans Petter Selasky if (!ibcq) 135512515907SHans Petter Selasky return 128; 135612515907SHans Petter Selasky 135712515907SHans Petter Selasky cq = to_mcq(ibcq); 135812515907SHans Petter Selasky return cq->cqe_size; 135912515907SHans Petter Selasky } 13608e6e287fSHans Petter Selasky 13618e6e287fSHans Petter Selasky /* Called from atomic context */ 13628e6e287fSHans Petter Selasky int mlx5_ib_generate_wc(struct ib_cq *ibcq, struct ib_wc *wc) 13638e6e287fSHans Petter Selasky { 13648e6e287fSHans Petter Selasky struct mlx5_ib_wc *soft_wc; 13658e6e287fSHans Petter Selasky struct mlx5_ib_cq *cq = to_mcq(ibcq); 13668e6e287fSHans Petter Selasky unsigned long flags; 13678e6e287fSHans Petter Selasky 13688e6e287fSHans Petter Selasky soft_wc = kmalloc(sizeof(*soft_wc), GFP_ATOMIC); 13698e6e287fSHans Petter Selasky if (!soft_wc) 13708e6e287fSHans Petter Selasky return -ENOMEM; 13718e6e287fSHans Petter Selasky 13728e6e287fSHans Petter Selasky soft_wc->wc = *wc; 13738e6e287fSHans Petter Selasky spin_lock_irqsave(&cq->lock, flags); 13748e6e287fSHans Petter Selasky list_add_tail(&soft_wc->list, &cq->wc_list); 13758e6e287fSHans Petter Selasky if (cq->notify_flags == IB_CQ_NEXT_COMP || 13768e6e287fSHans Petter Selasky wc->status != IB_WC_SUCCESS) { 13778e6e287fSHans Petter Selasky cq->notify_flags = 0; 13788e6e287fSHans Petter Selasky schedule_work(&cq->notify_work); 13798e6e287fSHans Petter Selasky } 13808e6e287fSHans Petter Selasky spin_unlock_irqrestore(&cq->lock, flags); 13818e6e287fSHans Petter Selasky 13828e6e287fSHans Petter Selasky return 0; 13838e6e287fSHans Petter Selasky } 1384