1e126ba97SEli Cohen /* 2e126ba97SEli Cohen * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved. 3e126ba97SEli Cohen * 4e126ba97SEli Cohen * This software is available to you under a choice of one of two 5e126ba97SEli Cohen * licenses. You may choose to be licensed under the terms of the GNU 6e126ba97SEli Cohen * General Public License (GPL) Version 2, available from the file 7e126ba97SEli Cohen * COPYING in the main directory of this source tree, or the 8e126ba97SEli Cohen * OpenIB.org BSD license below: 9e126ba97SEli Cohen * 10e126ba97SEli Cohen * Redistribution and use in source and binary forms, with or 11e126ba97SEli Cohen * without modification, are permitted provided that the following 12e126ba97SEli Cohen * conditions are met: 13e126ba97SEli Cohen * 14e126ba97SEli Cohen * - Redistributions of source code must retain the above 15e126ba97SEli Cohen * copyright notice, this list of conditions and the following 16e126ba97SEli Cohen * disclaimer. 17e126ba97SEli Cohen * 18e126ba97SEli Cohen * - Redistributions in binary form must reproduce the above 19e126ba97SEli Cohen * copyright notice, this list of conditions and the following 20e126ba97SEli Cohen * disclaimer in the documentation and/or other materials 21e126ba97SEli Cohen * provided with the distribution. 22e126ba97SEli Cohen * 23e126ba97SEli Cohen * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24e126ba97SEli Cohen * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25e126ba97SEli Cohen * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26e126ba97SEli Cohen * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27e126ba97SEli Cohen * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28e126ba97SEli Cohen * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29e126ba97SEli Cohen * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30e126ba97SEli Cohen * SOFTWARE. 31e126ba97SEli Cohen */ 32e126ba97SEli Cohen 33e126ba97SEli Cohen #include <linux/module.h> 34e126ba97SEli Cohen #include <rdma/ib_umem.h> 35e126ba97SEli Cohen #include "mlx5_ib.h" 36e126ba97SEli Cohen #include "user.h" 37e126ba97SEli Cohen 38e126ba97SEli Cohen /* not supported currently */ 39e126ba97SEli Cohen static int wq_signature; 40e126ba97SEli Cohen 41e126ba97SEli Cohen enum { 42e126ba97SEli Cohen MLX5_IB_ACK_REQ_FREQ = 8, 43e126ba97SEli Cohen }; 44e126ba97SEli Cohen 45e126ba97SEli Cohen enum { 46e126ba97SEli Cohen MLX5_IB_DEFAULT_SCHED_QUEUE = 0x83, 47e126ba97SEli Cohen MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f, 48e126ba97SEli Cohen MLX5_IB_LINK_TYPE_IB = 0, 49e126ba97SEli Cohen MLX5_IB_LINK_TYPE_ETH = 1 50e126ba97SEli Cohen }; 51e126ba97SEli Cohen 52e126ba97SEli Cohen enum { 53e126ba97SEli Cohen MLX5_IB_SQ_STRIDE = 6, 54e126ba97SEli Cohen MLX5_IB_CACHE_LINE_SIZE = 64, 55e126ba97SEli Cohen }; 56e126ba97SEli Cohen 57e126ba97SEli Cohen static const u32 mlx5_ib_opcode[] = { 58e126ba97SEli Cohen [IB_WR_SEND] = MLX5_OPCODE_SEND, 59e126ba97SEli Cohen [IB_WR_SEND_WITH_IMM] = MLX5_OPCODE_SEND_IMM, 60e126ba97SEli Cohen [IB_WR_RDMA_WRITE] = MLX5_OPCODE_RDMA_WRITE, 61e126ba97SEli Cohen [IB_WR_RDMA_WRITE_WITH_IMM] = MLX5_OPCODE_RDMA_WRITE_IMM, 62e126ba97SEli Cohen [IB_WR_RDMA_READ] = MLX5_OPCODE_RDMA_READ, 63e126ba97SEli Cohen [IB_WR_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_CS, 64e126ba97SEli Cohen [IB_WR_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_FA, 65e126ba97SEli Cohen [IB_WR_SEND_WITH_INV] = MLX5_OPCODE_SEND_INVAL, 66e126ba97SEli Cohen [IB_WR_LOCAL_INV] = MLX5_OPCODE_UMR, 67e126ba97SEli Cohen [IB_WR_FAST_REG_MR] = MLX5_OPCODE_UMR, 68e126ba97SEli Cohen [IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_MASKED_CS, 69e126ba97SEli Cohen [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_MASKED_FA, 70e126ba97SEli Cohen [MLX5_IB_WR_UMR] = MLX5_OPCODE_UMR, 71e126ba97SEli Cohen }; 72e126ba97SEli Cohen 73e126ba97SEli Cohen struct umr_wr { 74e126ba97SEli Cohen u64 virt_addr; 75e126ba97SEli Cohen struct ib_pd *pd; 76e126ba97SEli Cohen unsigned int page_shift; 77e126ba97SEli Cohen unsigned int npages; 78e126ba97SEli Cohen u32 length; 79e126ba97SEli Cohen int access_flags; 80e126ba97SEli Cohen u32 mkey; 81e126ba97SEli Cohen }; 82e126ba97SEli Cohen 83e126ba97SEli Cohen static int is_qp0(enum ib_qp_type qp_type) 84e126ba97SEli Cohen { 85e126ba97SEli Cohen return qp_type == IB_QPT_SMI; 86e126ba97SEli Cohen } 87e126ba97SEli Cohen 88e126ba97SEli Cohen static int is_qp1(enum ib_qp_type qp_type) 89e126ba97SEli Cohen { 90e126ba97SEli Cohen return qp_type == IB_QPT_GSI; 91e126ba97SEli Cohen } 92e126ba97SEli Cohen 93e126ba97SEli Cohen static int is_sqp(enum ib_qp_type qp_type) 94e126ba97SEli Cohen { 95e126ba97SEli Cohen return is_qp0(qp_type) || is_qp1(qp_type); 96e126ba97SEli Cohen } 97e126ba97SEli Cohen 98e126ba97SEli Cohen static void *get_wqe(struct mlx5_ib_qp *qp, int offset) 99e126ba97SEli Cohen { 100e126ba97SEli Cohen return mlx5_buf_offset(&qp->buf, offset); 101e126ba97SEli Cohen } 102e126ba97SEli Cohen 103e126ba97SEli Cohen static void *get_recv_wqe(struct mlx5_ib_qp *qp, int n) 104e126ba97SEli Cohen { 105e126ba97SEli Cohen return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift)); 106e126ba97SEli Cohen } 107e126ba97SEli Cohen 108e126ba97SEli Cohen void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n) 109e126ba97SEli Cohen { 110e126ba97SEli Cohen return get_wqe(qp, qp->sq.offset + (n << MLX5_IB_SQ_STRIDE)); 111e126ba97SEli Cohen } 112e126ba97SEli Cohen 113e126ba97SEli Cohen static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type) 114e126ba97SEli Cohen { 115e126ba97SEli Cohen struct ib_qp *ibqp = &to_mibqp(qp)->ibqp; 116e126ba97SEli Cohen struct ib_event event; 117e126ba97SEli Cohen 118e126ba97SEli Cohen if (type == MLX5_EVENT_TYPE_PATH_MIG) 119e126ba97SEli Cohen to_mibqp(qp)->port = to_mibqp(qp)->alt_port; 120e126ba97SEli Cohen 121e126ba97SEli Cohen if (ibqp->event_handler) { 122e126ba97SEli Cohen event.device = ibqp->device; 123e126ba97SEli Cohen event.element.qp = ibqp; 124e126ba97SEli Cohen switch (type) { 125e126ba97SEli Cohen case MLX5_EVENT_TYPE_PATH_MIG: 126e126ba97SEli Cohen event.event = IB_EVENT_PATH_MIG; 127e126ba97SEli Cohen break; 128e126ba97SEli Cohen case MLX5_EVENT_TYPE_COMM_EST: 129e126ba97SEli Cohen event.event = IB_EVENT_COMM_EST; 130e126ba97SEli Cohen break; 131e126ba97SEli Cohen case MLX5_EVENT_TYPE_SQ_DRAINED: 132e126ba97SEli Cohen event.event = IB_EVENT_SQ_DRAINED; 133e126ba97SEli Cohen break; 134e126ba97SEli Cohen case MLX5_EVENT_TYPE_SRQ_LAST_WQE: 135e126ba97SEli Cohen event.event = IB_EVENT_QP_LAST_WQE_REACHED; 136e126ba97SEli Cohen break; 137e126ba97SEli Cohen case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: 138e126ba97SEli Cohen event.event = IB_EVENT_QP_FATAL; 139e126ba97SEli Cohen break; 140e126ba97SEli Cohen case MLX5_EVENT_TYPE_PATH_MIG_FAILED: 141e126ba97SEli Cohen event.event = IB_EVENT_PATH_MIG_ERR; 142e126ba97SEli Cohen break; 143e126ba97SEli Cohen case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: 144e126ba97SEli Cohen event.event = IB_EVENT_QP_REQ_ERR; 145e126ba97SEli Cohen break; 146e126ba97SEli Cohen case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: 147e126ba97SEli Cohen event.event = IB_EVENT_QP_ACCESS_ERR; 148e126ba97SEli Cohen break; 149e126ba97SEli Cohen default: 150e126ba97SEli Cohen pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn); 151e126ba97SEli Cohen return; 152e126ba97SEli Cohen } 153e126ba97SEli Cohen 154e126ba97SEli Cohen ibqp->event_handler(&event, ibqp->qp_context); 155e126ba97SEli Cohen } 156e126ba97SEli Cohen } 157e126ba97SEli Cohen 158e126ba97SEli Cohen static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap, 159e126ba97SEli Cohen int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd) 160e126ba97SEli Cohen { 161e126ba97SEli Cohen int wqe_size; 162e126ba97SEli Cohen int wq_size; 163e126ba97SEli Cohen 164e126ba97SEli Cohen /* Sanity check RQ size before proceeding */ 165e126ba97SEli Cohen if (cap->max_recv_wr > dev->mdev.caps.max_wqes) 166e126ba97SEli Cohen return -EINVAL; 167e126ba97SEli Cohen 168e126ba97SEli Cohen if (!has_rq) { 169e126ba97SEli Cohen qp->rq.max_gs = 0; 170e126ba97SEli Cohen qp->rq.wqe_cnt = 0; 171e126ba97SEli Cohen qp->rq.wqe_shift = 0; 172e126ba97SEli Cohen } else { 173e126ba97SEli Cohen if (ucmd) { 174e126ba97SEli Cohen qp->rq.wqe_cnt = ucmd->rq_wqe_count; 175e126ba97SEli Cohen qp->rq.wqe_shift = ucmd->rq_wqe_shift; 176e126ba97SEli Cohen qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig; 177e126ba97SEli Cohen qp->rq.max_post = qp->rq.wqe_cnt; 178e126ba97SEli Cohen } else { 179e126ba97SEli Cohen wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0; 180e126ba97SEli Cohen wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg); 181e126ba97SEli Cohen wqe_size = roundup_pow_of_two(wqe_size); 182e126ba97SEli Cohen wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size; 183e126ba97SEli Cohen wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB); 184e126ba97SEli Cohen qp->rq.wqe_cnt = wq_size / wqe_size; 185e126ba97SEli Cohen if (wqe_size > dev->mdev.caps.max_rq_desc_sz) { 186e126ba97SEli Cohen mlx5_ib_dbg(dev, "wqe_size %d, max %d\n", 187e126ba97SEli Cohen wqe_size, 188e126ba97SEli Cohen dev->mdev.caps.max_rq_desc_sz); 189e126ba97SEli Cohen return -EINVAL; 190e126ba97SEli Cohen } 191e126ba97SEli Cohen qp->rq.wqe_shift = ilog2(wqe_size); 192e126ba97SEli Cohen qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig; 193e126ba97SEli Cohen qp->rq.max_post = qp->rq.wqe_cnt; 194e126ba97SEli Cohen } 195e126ba97SEli Cohen } 196e126ba97SEli Cohen 197e126ba97SEli Cohen return 0; 198e126ba97SEli Cohen } 199e126ba97SEli Cohen 200e126ba97SEli Cohen static int sq_overhead(enum ib_qp_type qp_type) 201e126ba97SEli Cohen { 202618af384SAndi Shyti int size = 0; 203e126ba97SEli Cohen 204e126ba97SEli Cohen switch (qp_type) { 205e126ba97SEli Cohen case IB_QPT_XRC_INI: 206b125a54bSEli Cohen size += sizeof(struct mlx5_wqe_xrc_seg); 207e126ba97SEli Cohen /* fall through */ 208e126ba97SEli Cohen case IB_QPT_RC: 209e126ba97SEli Cohen size += sizeof(struct mlx5_wqe_ctrl_seg) + 210e126ba97SEli Cohen sizeof(struct mlx5_wqe_atomic_seg) + 211e126ba97SEli Cohen sizeof(struct mlx5_wqe_raddr_seg); 212e126ba97SEli Cohen break; 213e126ba97SEli Cohen 214b125a54bSEli Cohen case IB_QPT_XRC_TGT: 215b125a54bSEli Cohen return 0; 216b125a54bSEli Cohen 217e126ba97SEli Cohen case IB_QPT_UC: 218b125a54bSEli Cohen size += sizeof(struct mlx5_wqe_ctrl_seg) + 219e126ba97SEli Cohen sizeof(struct mlx5_wqe_raddr_seg); 220e126ba97SEli Cohen break; 221e126ba97SEli Cohen 222e126ba97SEli Cohen case IB_QPT_UD: 223e126ba97SEli Cohen case IB_QPT_SMI: 224e126ba97SEli Cohen case IB_QPT_GSI: 225b125a54bSEli Cohen size += sizeof(struct mlx5_wqe_ctrl_seg) + 226e126ba97SEli Cohen sizeof(struct mlx5_wqe_datagram_seg); 227e126ba97SEli Cohen break; 228e126ba97SEli Cohen 229e126ba97SEli Cohen case MLX5_IB_QPT_REG_UMR: 230b125a54bSEli Cohen size += sizeof(struct mlx5_wqe_ctrl_seg) + 231e126ba97SEli Cohen sizeof(struct mlx5_wqe_umr_ctrl_seg) + 232e126ba97SEli Cohen sizeof(struct mlx5_mkey_seg); 233e126ba97SEli Cohen break; 234e126ba97SEli Cohen 235e126ba97SEli Cohen default: 236e126ba97SEli Cohen return -EINVAL; 237e126ba97SEli Cohen } 238e126ba97SEli Cohen 239e126ba97SEli Cohen return size; 240e126ba97SEli Cohen } 241e126ba97SEli Cohen 242e126ba97SEli Cohen static int calc_send_wqe(struct ib_qp_init_attr *attr) 243e126ba97SEli Cohen { 244e126ba97SEli Cohen int inl_size = 0; 245e126ba97SEli Cohen int size; 246e126ba97SEli Cohen 247e126ba97SEli Cohen size = sq_overhead(attr->qp_type); 248e126ba97SEli Cohen if (size < 0) 249e126ba97SEli Cohen return size; 250e126ba97SEli Cohen 251e126ba97SEli Cohen if (attr->cap.max_inline_data) { 252e126ba97SEli Cohen inl_size = size + sizeof(struct mlx5_wqe_inline_seg) + 253e126ba97SEli Cohen attr->cap.max_inline_data; 254e126ba97SEli Cohen } 255e126ba97SEli Cohen 256e126ba97SEli Cohen size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg); 257e126ba97SEli Cohen 258e126ba97SEli Cohen return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB); 259e126ba97SEli Cohen } 260e126ba97SEli Cohen 261e126ba97SEli Cohen static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr, 262e126ba97SEli Cohen struct mlx5_ib_qp *qp) 263e126ba97SEli Cohen { 264e126ba97SEli Cohen int wqe_size; 265e126ba97SEli Cohen int wq_size; 266e126ba97SEli Cohen 267e126ba97SEli Cohen if (!attr->cap.max_send_wr) 268e126ba97SEli Cohen return 0; 269e126ba97SEli Cohen 270e126ba97SEli Cohen wqe_size = calc_send_wqe(attr); 271e126ba97SEli Cohen mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size); 272e126ba97SEli Cohen if (wqe_size < 0) 273e126ba97SEli Cohen return wqe_size; 274e126ba97SEli Cohen 275e126ba97SEli Cohen if (wqe_size > dev->mdev.caps.max_sq_desc_sz) { 276b125a54bSEli Cohen mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n", 277b125a54bSEli Cohen wqe_size, dev->mdev.caps.max_sq_desc_sz); 278e126ba97SEli Cohen return -EINVAL; 279e126ba97SEli Cohen } 280e126ba97SEli Cohen 281e126ba97SEli Cohen qp->max_inline_data = wqe_size - sq_overhead(attr->qp_type) - 282e126ba97SEli Cohen sizeof(struct mlx5_wqe_inline_seg); 283e126ba97SEli Cohen attr->cap.max_inline_data = qp->max_inline_data; 284e126ba97SEli Cohen 285e126ba97SEli Cohen wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size); 286e126ba97SEli Cohen qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB; 287b125a54bSEli Cohen if (qp->sq.wqe_cnt > dev->mdev.caps.max_wqes) { 288b125a54bSEli Cohen mlx5_ib_dbg(dev, "wqe count(%d) exceeds limits(%d)\n", 289b125a54bSEli Cohen qp->sq.wqe_cnt, dev->mdev.caps.max_wqes); 290b125a54bSEli Cohen return -ENOMEM; 291b125a54bSEli Cohen } 292e126ba97SEli Cohen qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB); 293e126ba97SEli Cohen qp->sq.max_gs = attr->cap.max_send_sge; 294b125a54bSEli Cohen qp->sq.max_post = wq_size / wqe_size; 295b125a54bSEli Cohen attr->cap.max_send_wr = qp->sq.max_post; 296e126ba97SEli Cohen 297e126ba97SEli Cohen return wq_size; 298e126ba97SEli Cohen } 299e126ba97SEli Cohen 300e126ba97SEli Cohen static int set_user_buf_size(struct mlx5_ib_dev *dev, 301e126ba97SEli Cohen struct mlx5_ib_qp *qp, 302e126ba97SEli Cohen struct mlx5_ib_create_qp *ucmd) 303e126ba97SEli Cohen { 304e126ba97SEli Cohen int desc_sz = 1 << qp->sq.wqe_shift; 305e126ba97SEli Cohen 306e126ba97SEli Cohen if (desc_sz > dev->mdev.caps.max_sq_desc_sz) { 307e126ba97SEli Cohen mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n", 308e126ba97SEli Cohen desc_sz, dev->mdev.caps.max_sq_desc_sz); 309e126ba97SEli Cohen return -EINVAL; 310e126ba97SEli Cohen } 311e126ba97SEli Cohen 312e126ba97SEli Cohen if (ucmd->sq_wqe_count && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) { 313e126ba97SEli Cohen mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n", 314e126ba97SEli Cohen ucmd->sq_wqe_count, ucmd->sq_wqe_count); 315e126ba97SEli Cohen return -EINVAL; 316e126ba97SEli Cohen } 317e126ba97SEli Cohen 318e126ba97SEli Cohen qp->sq.wqe_cnt = ucmd->sq_wqe_count; 319e126ba97SEli Cohen 320e126ba97SEli Cohen if (qp->sq.wqe_cnt > dev->mdev.caps.max_wqes) { 321e126ba97SEli Cohen mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n", 322e126ba97SEli Cohen qp->sq.wqe_cnt, dev->mdev.caps.max_wqes); 323e126ba97SEli Cohen return -EINVAL; 324e126ba97SEli Cohen } 325e126ba97SEli Cohen 326e126ba97SEli Cohen qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + 327e126ba97SEli Cohen (qp->sq.wqe_cnt << 6); 328e126ba97SEli Cohen 329e126ba97SEli Cohen return 0; 330e126ba97SEli Cohen } 331e126ba97SEli Cohen 332e126ba97SEli Cohen static int qp_has_rq(struct ib_qp_init_attr *attr) 333e126ba97SEli Cohen { 334e126ba97SEli Cohen if (attr->qp_type == IB_QPT_XRC_INI || 335e126ba97SEli Cohen attr->qp_type == IB_QPT_XRC_TGT || attr->srq || 336e126ba97SEli Cohen attr->qp_type == MLX5_IB_QPT_REG_UMR || 337e126ba97SEli Cohen !attr->cap.max_recv_wr) 338e126ba97SEli Cohen return 0; 339e126ba97SEli Cohen 340e126ba97SEli Cohen return 1; 341e126ba97SEli Cohen } 342e126ba97SEli Cohen 343c1be5232SEli Cohen static int first_med_uuar(void) 344c1be5232SEli Cohen { 345c1be5232SEli Cohen return 1; 346c1be5232SEli Cohen } 347c1be5232SEli Cohen 348c1be5232SEli Cohen static int next_uuar(int n) 349c1be5232SEli Cohen { 350c1be5232SEli Cohen n++; 351c1be5232SEli Cohen 352c1be5232SEli Cohen while (((n % 4) & 2)) 353c1be5232SEli Cohen n++; 354c1be5232SEli Cohen 355c1be5232SEli Cohen return n; 356c1be5232SEli Cohen } 357c1be5232SEli Cohen 358c1be5232SEli Cohen static int num_med_uuar(struct mlx5_uuar_info *uuari) 359c1be5232SEli Cohen { 360c1be5232SEli Cohen int n; 361c1be5232SEli Cohen 362c1be5232SEli Cohen n = uuari->num_uars * MLX5_NON_FP_BF_REGS_PER_PAGE - 363c1be5232SEli Cohen uuari->num_low_latency_uuars - 1; 364c1be5232SEli Cohen 365c1be5232SEli Cohen return n >= 0 ? n : 0; 366c1be5232SEli Cohen } 367c1be5232SEli Cohen 368c1be5232SEli Cohen static int max_uuari(struct mlx5_uuar_info *uuari) 369c1be5232SEli Cohen { 370c1be5232SEli Cohen return uuari->num_uars * 4; 371c1be5232SEli Cohen } 372c1be5232SEli Cohen 373c1be5232SEli Cohen static int first_hi_uuar(struct mlx5_uuar_info *uuari) 374c1be5232SEli Cohen { 375c1be5232SEli Cohen int med; 376c1be5232SEli Cohen int i; 377c1be5232SEli Cohen int t; 378c1be5232SEli Cohen 379c1be5232SEli Cohen med = num_med_uuar(uuari); 380c1be5232SEli Cohen for (t = 0, i = first_med_uuar();; i = next_uuar(i)) { 381c1be5232SEli Cohen t++; 382c1be5232SEli Cohen if (t == med) 383c1be5232SEli Cohen return next_uuar(i); 384c1be5232SEli Cohen } 385c1be5232SEli Cohen 386c1be5232SEli Cohen return 0; 387c1be5232SEli Cohen } 388c1be5232SEli Cohen 389e126ba97SEli Cohen static int alloc_high_class_uuar(struct mlx5_uuar_info *uuari) 390e126ba97SEli Cohen { 391e126ba97SEli Cohen int i; 392e126ba97SEli Cohen 393c1be5232SEli Cohen for (i = first_hi_uuar(uuari); i < max_uuari(uuari); i = next_uuar(i)) { 394e126ba97SEli Cohen if (!test_bit(i, uuari->bitmap)) { 395e126ba97SEli Cohen set_bit(i, uuari->bitmap); 396e126ba97SEli Cohen uuari->count[i]++; 397e126ba97SEli Cohen return i; 398e126ba97SEli Cohen } 399e126ba97SEli Cohen } 400e126ba97SEli Cohen 401e126ba97SEli Cohen return -ENOMEM; 402e126ba97SEli Cohen } 403e126ba97SEli Cohen 404e126ba97SEli Cohen static int alloc_med_class_uuar(struct mlx5_uuar_info *uuari) 405e126ba97SEli Cohen { 406c1be5232SEli Cohen int minidx = first_med_uuar(); 407e126ba97SEli Cohen int i; 408e126ba97SEli Cohen 409c1be5232SEli Cohen for (i = first_med_uuar(); i < first_hi_uuar(uuari); i = next_uuar(i)) { 410e126ba97SEli Cohen if (uuari->count[i] < uuari->count[minidx]) 411e126ba97SEli Cohen minidx = i; 412e126ba97SEli Cohen } 413e126ba97SEli Cohen 414e126ba97SEli Cohen uuari->count[minidx]++; 415e126ba97SEli Cohen return minidx; 416e126ba97SEli Cohen } 417e126ba97SEli Cohen 418e126ba97SEli Cohen static int alloc_uuar(struct mlx5_uuar_info *uuari, 419e126ba97SEli Cohen enum mlx5_ib_latency_class lat) 420e126ba97SEli Cohen { 421e126ba97SEli Cohen int uuarn = -EINVAL; 422e126ba97SEli Cohen 423e126ba97SEli Cohen mutex_lock(&uuari->lock); 424e126ba97SEli Cohen switch (lat) { 425e126ba97SEli Cohen case MLX5_IB_LATENCY_CLASS_LOW: 426e126ba97SEli Cohen uuarn = 0; 427e126ba97SEli Cohen uuari->count[uuarn]++; 428e126ba97SEli Cohen break; 429e126ba97SEli Cohen 430e126ba97SEli Cohen case MLX5_IB_LATENCY_CLASS_MEDIUM: 431e126ba97SEli Cohen uuarn = alloc_med_class_uuar(uuari); 432e126ba97SEli Cohen break; 433e126ba97SEli Cohen 434e126ba97SEli Cohen case MLX5_IB_LATENCY_CLASS_HIGH: 435e126ba97SEli Cohen uuarn = alloc_high_class_uuar(uuari); 436e126ba97SEli Cohen break; 437e126ba97SEli Cohen 438e126ba97SEli Cohen case MLX5_IB_LATENCY_CLASS_FAST_PATH: 439e126ba97SEli Cohen uuarn = 2; 440e126ba97SEli Cohen break; 441e126ba97SEli Cohen } 442e126ba97SEli Cohen mutex_unlock(&uuari->lock); 443e126ba97SEli Cohen 444e126ba97SEli Cohen return uuarn; 445e126ba97SEli Cohen } 446e126ba97SEli Cohen 447e126ba97SEli Cohen static void free_med_class_uuar(struct mlx5_uuar_info *uuari, int uuarn) 448e126ba97SEli Cohen { 449e126ba97SEli Cohen clear_bit(uuarn, uuari->bitmap); 450e126ba97SEli Cohen --uuari->count[uuarn]; 451e126ba97SEli Cohen } 452e126ba97SEli Cohen 453e126ba97SEli Cohen static void free_high_class_uuar(struct mlx5_uuar_info *uuari, int uuarn) 454e126ba97SEli Cohen { 455e126ba97SEli Cohen clear_bit(uuarn, uuari->bitmap); 456e126ba97SEli Cohen --uuari->count[uuarn]; 457e126ba97SEli Cohen } 458e126ba97SEli Cohen 459e126ba97SEli Cohen static void free_uuar(struct mlx5_uuar_info *uuari, int uuarn) 460e126ba97SEli Cohen { 461e126ba97SEli Cohen int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE; 462e126ba97SEli Cohen int high_uuar = nuuars - uuari->num_low_latency_uuars; 463e126ba97SEli Cohen 464e126ba97SEli Cohen mutex_lock(&uuari->lock); 465e126ba97SEli Cohen if (uuarn == 0) { 466e126ba97SEli Cohen --uuari->count[uuarn]; 467e126ba97SEli Cohen goto out; 468e126ba97SEli Cohen } 469e126ba97SEli Cohen 470e126ba97SEli Cohen if (uuarn < high_uuar) { 471e126ba97SEli Cohen free_med_class_uuar(uuari, uuarn); 472e126ba97SEli Cohen goto out; 473e126ba97SEli Cohen } 474e126ba97SEli Cohen 475e126ba97SEli Cohen free_high_class_uuar(uuari, uuarn); 476e126ba97SEli Cohen 477e126ba97SEli Cohen out: 478e126ba97SEli Cohen mutex_unlock(&uuari->lock); 479e126ba97SEli Cohen } 480e126ba97SEli Cohen 481e126ba97SEli Cohen static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state) 482e126ba97SEli Cohen { 483e126ba97SEli Cohen switch (state) { 484e126ba97SEli Cohen case IB_QPS_RESET: return MLX5_QP_STATE_RST; 485e126ba97SEli Cohen case IB_QPS_INIT: return MLX5_QP_STATE_INIT; 486e126ba97SEli Cohen case IB_QPS_RTR: return MLX5_QP_STATE_RTR; 487e126ba97SEli Cohen case IB_QPS_RTS: return MLX5_QP_STATE_RTS; 488e126ba97SEli Cohen case IB_QPS_SQD: return MLX5_QP_STATE_SQD; 489e126ba97SEli Cohen case IB_QPS_SQE: return MLX5_QP_STATE_SQER; 490e126ba97SEli Cohen case IB_QPS_ERR: return MLX5_QP_STATE_ERR; 491e126ba97SEli Cohen default: return -1; 492e126ba97SEli Cohen } 493e126ba97SEli Cohen } 494e126ba97SEli Cohen 495e126ba97SEli Cohen static int to_mlx5_st(enum ib_qp_type type) 496e126ba97SEli Cohen { 497e126ba97SEli Cohen switch (type) { 498e126ba97SEli Cohen case IB_QPT_RC: return MLX5_QP_ST_RC; 499e126ba97SEli Cohen case IB_QPT_UC: return MLX5_QP_ST_UC; 500e126ba97SEli Cohen case IB_QPT_UD: return MLX5_QP_ST_UD; 501e126ba97SEli Cohen case MLX5_IB_QPT_REG_UMR: return MLX5_QP_ST_REG_UMR; 502e126ba97SEli Cohen case IB_QPT_XRC_INI: 503e126ba97SEli Cohen case IB_QPT_XRC_TGT: return MLX5_QP_ST_XRC; 504e126ba97SEli Cohen case IB_QPT_SMI: return MLX5_QP_ST_QP0; 505e126ba97SEli Cohen case IB_QPT_GSI: return MLX5_QP_ST_QP1; 506e126ba97SEli Cohen case IB_QPT_RAW_IPV6: return MLX5_QP_ST_RAW_IPV6; 507e126ba97SEli Cohen case IB_QPT_RAW_ETHERTYPE: return MLX5_QP_ST_RAW_ETHERTYPE; 508e126ba97SEli Cohen case IB_QPT_RAW_PACKET: 509e126ba97SEli Cohen case IB_QPT_MAX: 510e126ba97SEli Cohen default: return -EINVAL; 511e126ba97SEli Cohen } 512e126ba97SEli Cohen } 513e126ba97SEli Cohen 514e126ba97SEli Cohen static int uuarn_to_uar_index(struct mlx5_uuar_info *uuari, int uuarn) 515e126ba97SEli Cohen { 516e126ba97SEli Cohen return uuari->uars[uuarn / MLX5_BF_REGS_PER_PAGE].index; 517e126ba97SEli Cohen } 518e126ba97SEli Cohen 519e126ba97SEli Cohen static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd, 520e126ba97SEli Cohen struct mlx5_ib_qp *qp, struct ib_udata *udata, 521e126ba97SEli Cohen struct mlx5_create_qp_mbox_in **in, 522e126ba97SEli Cohen struct mlx5_ib_create_qp_resp *resp, int *inlen) 523e126ba97SEli Cohen { 524e126ba97SEli Cohen struct mlx5_ib_ucontext *context; 525e126ba97SEli Cohen struct mlx5_ib_create_qp ucmd; 5269e9c47d0SEli Cohen int page_shift = 0; 527e126ba97SEli Cohen int uar_index; 528e126ba97SEli Cohen int npages; 5299e9c47d0SEli Cohen u32 offset = 0; 530e126ba97SEli Cohen int uuarn; 5319e9c47d0SEli Cohen int ncont = 0; 532e126ba97SEli Cohen int err; 533e126ba97SEli Cohen 534e126ba97SEli Cohen err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)); 535e126ba97SEli Cohen if (err) { 536e126ba97SEli Cohen mlx5_ib_dbg(dev, "copy failed\n"); 537e126ba97SEli Cohen return err; 538e126ba97SEli Cohen } 539e126ba97SEli Cohen 540e126ba97SEli Cohen context = to_mucontext(pd->uobject->context); 541e126ba97SEli Cohen /* 542e126ba97SEli Cohen * TBD: should come from the verbs when we have the API 543e126ba97SEli Cohen */ 544e126ba97SEli Cohen uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_HIGH); 545e126ba97SEli Cohen if (uuarn < 0) { 546e126ba97SEli Cohen mlx5_ib_dbg(dev, "failed to allocate low latency UUAR\n"); 547c1be5232SEli Cohen mlx5_ib_dbg(dev, "reverting to medium latency\n"); 548c1be5232SEli Cohen uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_MEDIUM); 549c1be5232SEli Cohen if (uuarn < 0) { 550c1be5232SEli Cohen mlx5_ib_dbg(dev, "failed to allocate medium latency UUAR\n"); 551e126ba97SEli Cohen mlx5_ib_dbg(dev, "reverting to high latency\n"); 552e126ba97SEli Cohen uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_LOW); 553e126ba97SEli Cohen if (uuarn < 0) { 554c1be5232SEli Cohen mlx5_ib_warn(dev, "uuar allocation failed\n"); 555e126ba97SEli Cohen return uuarn; 556e126ba97SEli Cohen } 557e126ba97SEli Cohen } 558c1be5232SEli Cohen } 559e126ba97SEli Cohen 560e126ba97SEli Cohen uar_index = uuarn_to_uar_index(&context->uuari, uuarn); 561e126ba97SEli Cohen mlx5_ib_dbg(dev, "uuarn 0x%x, uar_index 0x%x\n", uuarn, uar_index); 562e126ba97SEli Cohen 563e126ba97SEli Cohen err = set_user_buf_size(dev, qp, &ucmd); 564e126ba97SEli Cohen if (err) 565e126ba97SEli Cohen goto err_uuar; 566e126ba97SEli Cohen 5679e9c47d0SEli Cohen if (ucmd.buf_addr && qp->buf_size) { 568e126ba97SEli Cohen qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, 569e126ba97SEli Cohen qp->buf_size, 0, 0); 570e126ba97SEli Cohen if (IS_ERR(qp->umem)) { 571e126ba97SEli Cohen mlx5_ib_dbg(dev, "umem_get failed\n"); 572e126ba97SEli Cohen err = PTR_ERR(qp->umem); 573e126ba97SEli Cohen goto err_uuar; 574e126ba97SEli Cohen } 5759e9c47d0SEli Cohen } else { 5769e9c47d0SEli Cohen qp->umem = NULL; 5779e9c47d0SEli Cohen } 578e126ba97SEli Cohen 5799e9c47d0SEli Cohen if (qp->umem) { 580e126ba97SEli Cohen mlx5_ib_cont_pages(qp->umem, ucmd.buf_addr, &npages, &page_shift, 581e126ba97SEli Cohen &ncont, NULL); 582e126ba97SEli Cohen err = mlx5_ib_get_buf_offset(ucmd.buf_addr, page_shift, &offset); 583e126ba97SEli Cohen if (err) { 584e126ba97SEli Cohen mlx5_ib_warn(dev, "bad offset\n"); 585e126ba97SEli Cohen goto err_umem; 586e126ba97SEli Cohen } 587e126ba97SEli Cohen mlx5_ib_dbg(dev, "addr 0x%llx, size %d, npages %d, page_shift %d, ncont %d, offset %d\n", 588e126ba97SEli Cohen ucmd.buf_addr, qp->buf_size, npages, page_shift, ncont, offset); 5899e9c47d0SEli Cohen } 590e126ba97SEli Cohen 591e126ba97SEli Cohen *inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont; 592e126ba97SEli Cohen *in = mlx5_vzalloc(*inlen); 593e126ba97SEli Cohen if (!*in) { 594e126ba97SEli Cohen err = -ENOMEM; 595e126ba97SEli Cohen goto err_umem; 596e126ba97SEli Cohen } 5979e9c47d0SEli Cohen if (qp->umem) 598e126ba97SEli Cohen mlx5_ib_populate_pas(dev, qp->umem, page_shift, (*in)->pas, 0); 599e126ba97SEli Cohen (*in)->ctx.log_pg_sz_remote_qpn = 6001b77d2bdSEli Cohen cpu_to_be32((page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24); 601e126ba97SEli Cohen (*in)->ctx.params2 = cpu_to_be32(offset << 6); 602e126ba97SEli Cohen 603e126ba97SEli Cohen (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index); 604e126ba97SEli Cohen resp->uuar_index = uuarn; 605e126ba97SEli Cohen qp->uuarn = uuarn; 606e126ba97SEli Cohen 607e126ba97SEli Cohen err = mlx5_ib_db_map_user(context, ucmd.db_addr, &qp->db); 608e126ba97SEli Cohen if (err) { 609e126ba97SEli Cohen mlx5_ib_dbg(dev, "map failed\n"); 610e126ba97SEli Cohen goto err_free; 611e126ba97SEli Cohen } 612e126ba97SEli Cohen 613e126ba97SEli Cohen err = ib_copy_to_udata(udata, resp, sizeof(*resp)); 614e126ba97SEli Cohen if (err) { 615e126ba97SEli Cohen mlx5_ib_dbg(dev, "copy failed\n"); 616e126ba97SEli Cohen goto err_unmap; 617e126ba97SEli Cohen } 618e126ba97SEli Cohen qp->create_type = MLX5_QP_USER; 619e126ba97SEli Cohen 620e126ba97SEli Cohen return 0; 621e126ba97SEli Cohen 622e126ba97SEli Cohen err_unmap: 623e126ba97SEli Cohen mlx5_ib_db_unmap_user(context, &qp->db); 624e126ba97SEli Cohen 625e126ba97SEli Cohen err_free: 626e126ba97SEli Cohen mlx5_vfree(*in); 627e126ba97SEli Cohen 628e126ba97SEli Cohen err_umem: 6299e9c47d0SEli Cohen if (qp->umem) 630e126ba97SEli Cohen ib_umem_release(qp->umem); 631e126ba97SEli Cohen 632e126ba97SEli Cohen err_uuar: 633e126ba97SEli Cohen free_uuar(&context->uuari, uuarn); 634e126ba97SEli Cohen return err; 635e126ba97SEli Cohen } 636e126ba97SEli Cohen 637e126ba97SEli Cohen static void destroy_qp_user(struct ib_pd *pd, struct mlx5_ib_qp *qp) 638e126ba97SEli Cohen { 639e126ba97SEli Cohen struct mlx5_ib_ucontext *context; 640e126ba97SEli Cohen 641e126ba97SEli Cohen context = to_mucontext(pd->uobject->context); 642e126ba97SEli Cohen mlx5_ib_db_unmap_user(context, &qp->db); 6439e9c47d0SEli Cohen if (qp->umem) 644e126ba97SEli Cohen ib_umem_release(qp->umem); 645e126ba97SEli Cohen free_uuar(&context->uuari, qp->uuarn); 646e126ba97SEli Cohen } 647e126ba97SEli Cohen 648e126ba97SEli Cohen static int create_kernel_qp(struct mlx5_ib_dev *dev, 649e126ba97SEli Cohen struct ib_qp_init_attr *init_attr, 650e126ba97SEli Cohen struct mlx5_ib_qp *qp, 651e126ba97SEli Cohen struct mlx5_create_qp_mbox_in **in, int *inlen) 652e126ba97SEli Cohen { 653e126ba97SEli Cohen enum mlx5_ib_latency_class lc = MLX5_IB_LATENCY_CLASS_LOW; 654e126ba97SEli Cohen struct mlx5_uuar_info *uuari; 655e126ba97SEli Cohen int uar_index; 656e126ba97SEli Cohen int uuarn; 657e126ba97SEli Cohen int err; 658e126ba97SEli Cohen 659e126ba97SEli Cohen uuari = &dev->mdev.priv.uuari; 660e126ba97SEli Cohen if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) 661e126ba97SEli Cohen qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK; 662e126ba97SEli Cohen 663e126ba97SEli Cohen if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR) 664e126ba97SEli Cohen lc = MLX5_IB_LATENCY_CLASS_FAST_PATH; 665e126ba97SEli Cohen 666e126ba97SEli Cohen uuarn = alloc_uuar(uuari, lc); 667e126ba97SEli Cohen if (uuarn < 0) { 668e126ba97SEli Cohen mlx5_ib_dbg(dev, "\n"); 669e126ba97SEli Cohen return -ENOMEM; 670e126ba97SEli Cohen } 671e126ba97SEli Cohen 672e126ba97SEli Cohen qp->bf = &uuari->bfs[uuarn]; 673e126ba97SEli Cohen uar_index = qp->bf->uar->index; 674e126ba97SEli Cohen 675e126ba97SEli Cohen err = calc_sq_size(dev, init_attr, qp); 676e126ba97SEli Cohen if (err < 0) { 677e126ba97SEli Cohen mlx5_ib_dbg(dev, "err %d\n", err); 678e126ba97SEli Cohen goto err_uuar; 679e126ba97SEli Cohen } 680e126ba97SEli Cohen 681e126ba97SEli Cohen qp->rq.offset = 0; 682e126ba97SEli Cohen qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift; 683e126ba97SEli Cohen qp->buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift); 684e126ba97SEli Cohen 685e126ba97SEli Cohen err = mlx5_buf_alloc(&dev->mdev, qp->buf_size, PAGE_SIZE * 2, &qp->buf); 686e126ba97SEli Cohen if (err) { 687e126ba97SEli Cohen mlx5_ib_dbg(dev, "err %d\n", err); 688e126ba97SEli Cohen goto err_uuar; 689e126ba97SEli Cohen } 690e126ba97SEli Cohen 691e126ba97SEli Cohen qp->sq.qend = mlx5_get_send_wqe(qp, qp->sq.wqe_cnt); 692e126ba97SEli Cohen *inlen = sizeof(**in) + sizeof(*(*in)->pas) * qp->buf.npages; 693e126ba97SEli Cohen *in = mlx5_vzalloc(*inlen); 694e126ba97SEli Cohen if (!*in) { 695e126ba97SEli Cohen err = -ENOMEM; 696e126ba97SEli Cohen goto err_buf; 697e126ba97SEli Cohen } 698e126ba97SEli Cohen (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index); 6991b77d2bdSEli Cohen (*in)->ctx.log_pg_sz_remote_qpn = 7001b77d2bdSEli Cohen cpu_to_be32((qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24); 701e126ba97SEli Cohen /* Set "fast registration enabled" for all kernel QPs */ 702e126ba97SEli Cohen (*in)->ctx.params1 |= cpu_to_be32(1 << 11); 703e126ba97SEli Cohen (*in)->ctx.sq_crq_size |= cpu_to_be16(1 << 4); 704e126ba97SEli Cohen 705e126ba97SEli Cohen mlx5_fill_page_array(&qp->buf, (*in)->pas); 706e126ba97SEli Cohen 707e126ba97SEli Cohen err = mlx5_db_alloc(&dev->mdev, &qp->db); 708e126ba97SEli Cohen if (err) { 709e126ba97SEli Cohen mlx5_ib_dbg(dev, "err %d\n", err); 710e126ba97SEli Cohen goto err_free; 711e126ba97SEli Cohen } 712e126ba97SEli Cohen 713e126ba97SEli Cohen qp->db.db[0] = 0; 714e126ba97SEli Cohen qp->db.db[1] = 0; 715e126ba97SEli Cohen 716e126ba97SEli Cohen qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wrid), GFP_KERNEL); 717e126ba97SEli Cohen qp->sq.wr_data = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wr_data), GFP_KERNEL); 718e126ba97SEli Cohen qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(*qp->rq.wrid), GFP_KERNEL); 719e126ba97SEli Cohen qp->sq.w_list = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.w_list), GFP_KERNEL); 720e126ba97SEli Cohen qp->sq.wqe_head = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wqe_head), GFP_KERNEL); 721e126ba97SEli Cohen 722e126ba97SEli Cohen if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid || 723e126ba97SEli Cohen !qp->sq.w_list || !qp->sq.wqe_head) { 724e126ba97SEli Cohen err = -ENOMEM; 725e126ba97SEli Cohen goto err_wrid; 726e126ba97SEli Cohen } 727e126ba97SEli Cohen qp->create_type = MLX5_QP_KERNEL; 728e126ba97SEli Cohen 729e126ba97SEli Cohen return 0; 730e126ba97SEli Cohen 731e126ba97SEli Cohen err_wrid: 732e126ba97SEli Cohen mlx5_db_free(&dev->mdev, &qp->db); 733e126ba97SEli Cohen kfree(qp->sq.wqe_head); 734e126ba97SEli Cohen kfree(qp->sq.w_list); 735e126ba97SEli Cohen kfree(qp->sq.wrid); 736e126ba97SEli Cohen kfree(qp->sq.wr_data); 737e126ba97SEli Cohen kfree(qp->rq.wrid); 738e126ba97SEli Cohen 739e126ba97SEli Cohen err_free: 740e126ba97SEli Cohen mlx5_vfree(*in); 741e126ba97SEli Cohen 742e126ba97SEli Cohen err_buf: 743e126ba97SEli Cohen mlx5_buf_free(&dev->mdev, &qp->buf); 744e126ba97SEli Cohen 745e126ba97SEli Cohen err_uuar: 746e126ba97SEli Cohen free_uuar(&dev->mdev.priv.uuari, uuarn); 747e126ba97SEli Cohen return err; 748e126ba97SEli Cohen } 749e126ba97SEli Cohen 750e126ba97SEli Cohen static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp) 751e126ba97SEli Cohen { 752e126ba97SEli Cohen mlx5_db_free(&dev->mdev, &qp->db); 753e126ba97SEli Cohen kfree(qp->sq.wqe_head); 754e126ba97SEli Cohen kfree(qp->sq.w_list); 755e126ba97SEli Cohen kfree(qp->sq.wrid); 756e126ba97SEli Cohen kfree(qp->sq.wr_data); 757e126ba97SEli Cohen kfree(qp->rq.wrid); 758e126ba97SEli Cohen mlx5_buf_free(&dev->mdev, &qp->buf); 759e126ba97SEli Cohen free_uuar(&dev->mdev.priv.uuari, qp->bf->uuarn); 760e126ba97SEli Cohen } 761e126ba97SEli Cohen 762e126ba97SEli Cohen static __be32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr) 763e126ba97SEli Cohen { 764e126ba97SEli Cohen if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) || 765e126ba97SEli Cohen (attr->qp_type == IB_QPT_XRC_INI)) 766e126ba97SEli Cohen return cpu_to_be32(MLX5_SRQ_RQ); 767e126ba97SEli Cohen else if (!qp->has_rq) 768e126ba97SEli Cohen return cpu_to_be32(MLX5_ZERO_LEN_RQ); 769e126ba97SEli Cohen else 770e126ba97SEli Cohen return cpu_to_be32(MLX5_NON_ZERO_RQ); 771e126ba97SEli Cohen } 772e126ba97SEli Cohen 773e126ba97SEli Cohen static int is_connected(enum ib_qp_type qp_type) 774e126ba97SEli Cohen { 775e126ba97SEli Cohen if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC) 776e126ba97SEli Cohen return 1; 777e126ba97SEli Cohen 778e126ba97SEli Cohen return 0; 779e126ba97SEli Cohen } 780e126ba97SEli Cohen 781e126ba97SEli Cohen static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd, 782e126ba97SEli Cohen struct ib_qp_init_attr *init_attr, 783e126ba97SEli Cohen struct ib_udata *udata, struct mlx5_ib_qp *qp) 784e126ba97SEli Cohen { 785e126ba97SEli Cohen struct mlx5_ib_resources *devr = &dev->devr; 786e126ba97SEli Cohen struct mlx5_ib_create_qp_resp resp; 787e126ba97SEli Cohen struct mlx5_create_qp_mbox_in *in; 788e126ba97SEli Cohen struct mlx5_ib_create_qp ucmd; 789e126ba97SEli Cohen int inlen = sizeof(*in); 790e126ba97SEli Cohen int err; 791e126ba97SEli Cohen 792e126ba97SEli Cohen mutex_init(&qp->mutex); 793e126ba97SEli Cohen spin_lock_init(&qp->sq.lock); 794e126ba97SEli Cohen spin_lock_init(&qp->rq.lock); 795e126ba97SEli Cohen 796e126ba97SEli Cohen if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) 797e126ba97SEli Cohen qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE; 798e126ba97SEli Cohen 799e126ba97SEli Cohen if (pd && pd->uobject) { 800e126ba97SEli Cohen if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) { 801e126ba97SEli Cohen mlx5_ib_dbg(dev, "copy failed\n"); 802e126ba97SEli Cohen return -EFAULT; 803e126ba97SEli Cohen } 804e126ba97SEli Cohen 805e126ba97SEli Cohen qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE); 806e126ba97SEli Cohen qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE); 807e126ba97SEli Cohen } else { 808e126ba97SEli Cohen qp->wq_sig = !!wq_signature; 809e126ba97SEli Cohen } 810e126ba97SEli Cohen 811e126ba97SEli Cohen qp->has_rq = qp_has_rq(init_attr); 812e126ba97SEli Cohen err = set_rq_size(dev, &init_attr->cap, qp->has_rq, 813e126ba97SEli Cohen qp, (pd && pd->uobject) ? &ucmd : NULL); 814e126ba97SEli Cohen if (err) { 815e126ba97SEli Cohen mlx5_ib_dbg(dev, "err %d\n", err); 816e126ba97SEli Cohen return err; 817e126ba97SEli Cohen } 818e126ba97SEli Cohen 819e126ba97SEli Cohen if (pd) { 820e126ba97SEli Cohen if (pd->uobject) { 821e126ba97SEli Cohen mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count); 822e126ba97SEli Cohen if (ucmd.rq_wqe_shift != qp->rq.wqe_shift || 823e126ba97SEli Cohen ucmd.rq_wqe_count != qp->rq.wqe_cnt) { 824e126ba97SEli Cohen mlx5_ib_dbg(dev, "invalid rq params\n"); 825e126ba97SEli Cohen return -EINVAL; 826e126ba97SEli Cohen } 827e126ba97SEli Cohen if (ucmd.sq_wqe_count > dev->mdev.caps.max_wqes) { 828e126ba97SEli Cohen mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n", 829e126ba97SEli Cohen ucmd.sq_wqe_count, dev->mdev.caps.max_wqes); 830e126ba97SEli Cohen return -EINVAL; 831e126ba97SEli Cohen } 832e126ba97SEli Cohen err = create_user_qp(dev, pd, qp, udata, &in, &resp, &inlen); 833e126ba97SEli Cohen if (err) 834e126ba97SEli Cohen mlx5_ib_dbg(dev, "err %d\n", err); 835e126ba97SEli Cohen } else { 836e126ba97SEli Cohen err = create_kernel_qp(dev, init_attr, qp, &in, &inlen); 837e126ba97SEli Cohen if (err) 838e126ba97SEli Cohen mlx5_ib_dbg(dev, "err %d\n", err); 839e126ba97SEli Cohen else 840e126ba97SEli Cohen qp->pa_lkey = to_mpd(pd)->pa_lkey; 841e126ba97SEli Cohen } 842e126ba97SEli Cohen 843e126ba97SEli Cohen if (err) 844e126ba97SEli Cohen return err; 845e126ba97SEli Cohen } else { 846e126ba97SEli Cohen in = mlx5_vzalloc(sizeof(*in)); 847e126ba97SEli Cohen if (!in) 848e126ba97SEli Cohen return -ENOMEM; 849e126ba97SEli Cohen 850e126ba97SEli Cohen qp->create_type = MLX5_QP_EMPTY; 851e126ba97SEli Cohen } 852e126ba97SEli Cohen 853e126ba97SEli Cohen if (is_sqp(init_attr->qp_type)) 854e126ba97SEli Cohen qp->port = init_attr->port_num; 855e126ba97SEli Cohen 856e126ba97SEli Cohen in->ctx.flags = cpu_to_be32(to_mlx5_st(init_attr->qp_type) << 16 | 857e126ba97SEli Cohen MLX5_QP_PM_MIGRATED << 11); 858e126ba97SEli Cohen 859e126ba97SEli Cohen if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR) 860e126ba97SEli Cohen in->ctx.flags_pd = cpu_to_be32(to_mpd(pd ? pd : devr->p0)->pdn); 861e126ba97SEli Cohen else 862e126ba97SEli Cohen in->ctx.flags_pd = cpu_to_be32(MLX5_QP_LAT_SENSITIVE); 863e126ba97SEli Cohen 864e126ba97SEli Cohen if (qp->wq_sig) 865e126ba97SEli Cohen in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_ENABLE_SIG); 866e126ba97SEli Cohen 867e126ba97SEli Cohen if (qp->scat_cqe && is_connected(init_attr->qp_type)) { 868e126ba97SEli Cohen int rcqe_sz; 869e126ba97SEli Cohen int scqe_sz; 870e126ba97SEli Cohen 871e126ba97SEli Cohen rcqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->recv_cq); 872e126ba97SEli Cohen scqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->send_cq); 873e126ba97SEli Cohen 874e126ba97SEli Cohen if (rcqe_sz == 128) 875e126ba97SEli Cohen in->ctx.cs_res = MLX5_RES_SCAT_DATA64_CQE; 876e126ba97SEli Cohen else 877e126ba97SEli Cohen in->ctx.cs_res = MLX5_RES_SCAT_DATA32_CQE; 878e126ba97SEli Cohen 879e126ba97SEli Cohen if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) { 880e126ba97SEli Cohen if (scqe_sz == 128) 881e126ba97SEli Cohen in->ctx.cs_req = MLX5_REQ_SCAT_DATA64_CQE; 882e126ba97SEli Cohen else 883e126ba97SEli Cohen in->ctx.cs_req = MLX5_REQ_SCAT_DATA32_CQE; 884e126ba97SEli Cohen } 885e126ba97SEli Cohen } 886e126ba97SEli Cohen 887e126ba97SEli Cohen if (qp->rq.wqe_cnt) { 888e126ba97SEli Cohen in->ctx.rq_size_stride = (qp->rq.wqe_shift - 4); 889e126ba97SEli Cohen in->ctx.rq_size_stride |= ilog2(qp->rq.wqe_cnt) << 3; 890e126ba97SEli Cohen } 891e126ba97SEli Cohen 892e126ba97SEli Cohen in->ctx.rq_type_srqn = get_rx_type(qp, init_attr); 893e126ba97SEli Cohen 894e126ba97SEli Cohen if (qp->sq.wqe_cnt) 895e126ba97SEli Cohen in->ctx.sq_crq_size |= cpu_to_be16(ilog2(qp->sq.wqe_cnt) << 11); 896e126ba97SEli Cohen else 897e126ba97SEli Cohen in->ctx.sq_crq_size |= cpu_to_be16(0x8000); 898e126ba97SEli Cohen 899e126ba97SEli Cohen /* Set default resources */ 900e126ba97SEli Cohen switch (init_attr->qp_type) { 901e126ba97SEli Cohen case IB_QPT_XRC_TGT: 902e126ba97SEli Cohen in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn); 903e126ba97SEli Cohen in->ctx.cqn_send = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn); 904e126ba97SEli Cohen in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn); 905e126ba97SEli Cohen in->ctx.xrcd = cpu_to_be32(to_mxrcd(init_attr->xrcd)->xrcdn); 906e126ba97SEli Cohen break; 907e126ba97SEli Cohen case IB_QPT_XRC_INI: 908e126ba97SEli Cohen in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn); 909e126ba97SEli Cohen in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn); 910e126ba97SEli Cohen in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn); 911e126ba97SEli Cohen break; 912e126ba97SEli Cohen default: 913e126ba97SEli Cohen if (init_attr->srq) { 914e126ba97SEli Cohen in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x0)->xrcdn); 915e126ba97SEli Cohen in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(init_attr->srq)->msrq.srqn); 916e126ba97SEli Cohen } else { 917e126ba97SEli Cohen in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn); 918e126ba97SEli Cohen in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn); 919e126ba97SEli Cohen } 920e126ba97SEli Cohen } 921e126ba97SEli Cohen 922e126ba97SEli Cohen if (init_attr->send_cq) 923e126ba97SEli Cohen in->ctx.cqn_send = cpu_to_be32(to_mcq(init_attr->send_cq)->mcq.cqn); 924e126ba97SEli Cohen 925e126ba97SEli Cohen if (init_attr->recv_cq) 926e126ba97SEli Cohen in->ctx.cqn_recv = cpu_to_be32(to_mcq(init_attr->recv_cq)->mcq.cqn); 927e126ba97SEli Cohen 928e126ba97SEli Cohen in->ctx.db_rec_addr = cpu_to_be64(qp->db.dma); 929e126ba97SEli Cohen 930e126ba97SEli Cohen err = mlx5_core_create_qp(&dev->mdev, &qp->mqp, in, inlen); 931e126ba97SEli Cohen if (err) { 932e126ba97SEli Cohen mlx5_ib_dbg(dev, "create qp failed\n"); 933e126ba97SEli Cohen goto err_create; 934e126ba97SEli Cohen } 935e126ba97SEli Cohen 936e126ba97SEli Cohen mlx5_vfree(in); 937e126ba97SEli Cohen /* Hardware wants QPN written in big-endian order (after 938e126ba97SEli Cohen * shifting) for send doorbell. Precompute this value to save 939e126ba97SEli Cohen * a little bit when posting sends. 940e126ba97SEli Cohen */ 941e126ba97SEli Cohen qp->doorbell_qpn = swab32(qp->mqp.qpn << 8); 942e126ba97SEli Cohen 943e126ba97SEli Cohen qp->mqp.event = mlx5_ib_qp_event; 944e126ba97SEli Cohen 945e126ba97SEli Cohen return 0; 946e126ba97SEli Cohen 947e126ba97SEli Cohen err_create: 948e126ba97SEli Cohen if (qp->create_type == MLX5_QP_USER) 949e126ba97SEli Cohen destroy_qp_user(pd, qp); 950e126ba97SEli Cohen else if (qp->create_type == MLX5_QP_KERNEL) 951e126ba97SEli Cohen destroy_qp_kernel(dev, qp); 952e126ba97SEli Cohen 953e126ba97SEli Cohen mlx5_vfree(in); 954e126ba97SEli Cohen return err; 955e126ba97SEli Cohen } 956e126ba97SEli Cohen 957e126ba97SEli Cohen static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq) 958e126ba97SEli Cohen __acquires(&send_cq->lock) __acquires(&recv_cq->lock) 959e126ba97SEli Cohen { 960e126ba97SEli Cohen if (send_cq) { 961e126ba97SEli Cohen if (recv_cq) { 962e126ba97SEli Cohen if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { 963e126ba97SEli Cohen spin_lock_irq(&send_cq->lock); 964e126ba97SEli Cohen spin_lock_nested(&recv_cq->lock, 965e126ba97SEli Cohen SINGLE_DEPTH_NESTING); 966e126ba97SEli Cohen } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) { 967e126ba97SEli Cohen spin_lock_irq(&send_cq->lock); 968e126ba97SEli Cohen __acquire(&recv_cq->lock); 969e126ba97SEli Cohen } else { 970e126ba97SEli Cohen spin_lock_irq(&recv_cq->lock); 971e126ba97SEli Cohen spin_lock_nested(&send_cq->lock, 972e126ba97SEli Cohen SINGLE_DEPTH_NESTING); 973e126ba97SEli Cohen } 974e126ba97SEli Cohen } else { 975e126ba97SEli Cohen spin_lock_irq(&send_cq->lock); 976e126ba97SEli Cohen } 977e126ba97SEli Cohen } else if (recv_cq) { 978e126ba97SEli Cohen spin_lock_irq(&recv_cq->lock); 979e126ba97SEli Cohen } 980e126ba97SEli Cohen } 981e126ba97SEli Cohen 982e126ba97SEli Cohen static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq) 983e126ba97SEli Cohen __releases(&send_cq->lock) __releases(&recv_cq->lock) 984e126ba97SEli Cohen { 985e126ba97SEli Cohen if (send_cq) { 986e126ba97SEli Cohen if (recv_cq) { 987e126ba97SEli Cohen if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { 988e126ba97SEli Cohen spin_unlock(&recv_cq->lock); 989e126ba97SEli Cohen spin_unlock_irq(&send_cq->lock); 990e126ba97SEli Cohen } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) { 991e126ba97SEli Cohen __release(&recv_cq->lock); 992e126ba97SEli Cohen spin_unlock_irq(&send_cq->lock); 993e126ba97SEli Cohen } else { 994e126ba97SEli Cohen spin_unlock(&send_cq->lock); 995e126ba97SEli Cohen spin_unlock_irq(&recv_cq->lock); 996e126ba97SEli Cohen } 997e126ba97SEli Cohen } else { 998e126ba97SEli Cohen spin_unlock_irq(&send_cq->lock); 999e126ba97SEli Cohen } 1000e126ba97SEli Cohen } else if (recv_cq) { 1001e126ba97SEli Cohen spin_unlock_irq(&recv_cq->lock); 1002e126ba97SEli Cohen } 1003e126ba97SEli Cohen } 1004e126ba97SEli Cohen 1005e126ba97SEli Cohen static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp) 1006e126ba97SEli Cohen { 1007e126ba97SEli Cohen return to_mpd(qp->ibqp.pd); 1008e126ba97SEli Cohen } 1009e126ba97SEli Cohen 1010e126ba97SEli Cohen static void get_cqs(struct mlx5_ib_qp *qp, 1011e126ba97SEli Cohen struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq) 1012e126ba97SEli Cohen { 1013e126ba97SEli Cohen switch (qp->ibqp.qp_type) { 1014e126ba97SEli Cohen case IB_QPT_XRC_TGT: 1015e126ba97SEli Cohen *send_cq = NULL; 1016e126ba97SEli Cohen *recv_cq = NULL; 1017e126ba97SEli Cohen break; 1018e126ba97SEli Cohen case MLX5_IB_QPT_REG_UMR: 1019e126ba97SEli Cohen case IB_QPT_XRC_INI: 1020e126ba97SEli Cohen *send_cq = to_mcq(qp->ibqp.send_cq); 1021e126ba97SEli Cohen *recv_cq = NULL; 1022e126ba97SEli Cohen break; 1023e126ba97SEli Cohen 1024e126ba97SEli Cohen case IB_QPT_SMI: 1025e126ba97SEli Cohen case IB_QPT_GSI: 1026e126ba97SEli Cohen case IB_QPT_RC: 1027e126ba97SEli Cohen case IB_QPT_UC: 1028e126ba97SEli Cohen case IB_QPT_UD: 1029e126ba97SEli Cohen case IB_QPT_RAW_IPV6: 1030e126ba97SEli Cohen case IB_QPT_RAW_ETHERTYPE: 1031e126ba97SEli Cohen *send_cq = to_mcq(qp->ibqp.send_cq); 1032e126ba97SEli Cohen *recv_cq = to_mcq(qp->ibqp.recv_cq); 1033e126ba97SEli Cohen break; 1034e126ba97SEli Cohen 1035e126ba97SEli Cohen case IB_QPT_RAW_PACKET: 1036e126ba97SEli Cohen case IB_QPT_MAX: 1037e126ba97SEli Cohen default: 1038e126ba97SEli Cohen *send_cq = NULL; 1039e126ba97SEli Cohen *recv_cq = NULL; 1040e126ba97SEli Cohen break; 1041e126ba97SEli Cohen } 1042e126ba97SEli Cohen } 1043e126ba97SEli Cohen 1044e126ba97SEli Cohen static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp) 1045e126ba97SEli Cohen { 1046e126ba97SEli Cohen struct mlx5_ib_cq *send_cq, *recv_cq; 1047e126ba97SEli Cohen struct mlx5_modify_qp_mbox_in *in; 1048e126ba97SEli Cohen int err; 1049e126ba97SEli Cohen 1050e126ba97SEli Cohen in = kzalloc(sizeof(*in), GFP_KERNEL); 1051e126ba97SEli Cohen if (!in) 1052e126ba97SEli Cohen return; 1053e126ba97SEli Cohen if (qp->state != IB_QPS_RESET) 1054e126ba97SEli Cohen if (mlx5_core_qp_modify(&dev->mdev, to_mlx5_state(qp->state), 1055e126ba97SEli Cohen MLX5_QP_STATE_RST, in, sizeof(*in), &qp->mqp)) 1056e126ba97SEli Cohen mlx5_ib_warn(dev, "mlx5_ib: modify QP %06x to RESET failed\n", 1057e126ba97SEli Cohen qp->mqp.qpn); 1058e126ba97SEli Cohen 1059e126ba97SEli Cohen get_cqs(qp, &send_cq, &recv_cq); 1060e126ba97SEli Cohen 1061e126ba97SEli Cohen if (qp->create_type == MLX5_QP_KERNEL) { 1062e126ba97SEli Cohen mlx5_ib_lock_cqs(send_cq, recv_cq); 1063e126ba97SEli Cohen __mlx5_ib_cq_clean(recv_cq, qp->mqp.qpn, 1064e126ba97SEli Cohen qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL); 1065e126ba97SEli Cohen if (send_cq != recv_cq) 1066e126ba97SEli Cohen __mlx5_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); 1067e126ba97SEli Cohen mlx5_ib_unlock_cqs(send_cq, recv_cq); 1068e126ba97SEli Cohen } 1069e126ba97SEli Cohen 1070e126ba97SEli Cohen err = mlx5_core_destroy_qp(&dev->mdev, &qp->mqp); 1071e126ba97SEli Cohen if (err) 1072e126ba97SEli Cohen mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n", qp->mqp.qpn); 1073e126ba97SEli Cohen kfree(in); 1074e126ba97SEli Cohen 1075e126ba97SEli Cohen 1076e126ba97SEli Cohen if (qp->create_type == MLX5_QP_KERNEL) 1077e126ba97SEli Cohen destroy_qp_kernel(dev, qp); 1078e126ba97SEli Cohen else if (qp->create_type == MLX5_QP_USER) 1079e126ba97SEli Cohen destroy_qp_user(&get_pd(qp)->ibpd, qp); 1080e126ba97SEli Cohen } 1081e126ba97SEli Cohen 1082e126ba97SEli Cohen static const char *ib_qp_type_str(enum ib_qp_type type) 1083e126ba97SEli Cohen { 1084e126ba97SEli Cohen switch (type) { 1085e126ba97SEli Cohen case IB_QPT_SMI: 1086e126ba97SEli Cohen return "IB_QPT_SMI"; 1087e126ba97SEli Cohen case IB_QPT_GSI: 1088e126ba97SEli Cohen return "IB_QPT_GSI"; 1089e126ba97SEli Cohen case IB_QPT_RC: 1090e126ba97SEli Cohen return "IB_QPT_RC"; 1091e126ba97SEli Cohen case IB_QPT_UC: 1092e126ba97SEli Cohen return "IB_QPT_UC"; 1093e126ba97SEli Cohen case IB_QPT_UD: 1094e126ba97SEli Cohen return "IB_QPT_UD"; 1095e126ba97SEli Cohen case IB_QPT_RAW_IPV6: 1096e126ba97SEli Cohen return "IB_QPT_RAW_IPV6"; 1097e126ba97SEli Cohen case IB_QPT_RAW_ETHERTYPE: 1098e126ba97SEli Cohen return "IB_QPT_RAW_ETHERTYPE"; 1099e126ba97SEli Cohen case IB_QPT_XRC_INI: 1100e126ba97SEli Cohen return "IB_QPT_XRC_INI"; 1101e126ba97SEli Cohen case IB_QPT_XRC_TGT: 1102e126ba97SEli Cohen return "IB_QPT_XRC_TGT"; 1103e126ba97SEli Cohen case IB_QPT_RAW_PACKET: 1104e126ba97SEli Cohen return "IB_QPT_RAW_PACKET"; 1105e126ba97SEli Cohen case MLX5_IB_QPT_REG_UMR: 1106e126ba97SEli Cohen return "MLX5_IB_QPT_REG_UMR"; 1107e126ba97SEli Cohen case IB_QPT_MAX: 1108e126ba97SEli Cohen default: 1109e126ba97SEli Cohen return "Invalid QP type"; 1110e126ba97SEli Cohen } 1111e126ba97SEli Cohen } 1112e126ba97SEli Cohen 1113e126ba97SEli Cohen struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, 1114e126ba97SEli Cohen struct ib_qp_init_attr *init_attr, 1115e126ba97SEli Cohen struct ib_udata *udata) 1116e126ba97SEli Cohen { 1117e126ba97SEli Cohen struct mlx5_ib_dev *dev; 1118e126ba97SEli Cohen struct mlx5_ib_qp *qp; 1119e126ba97SEli Cohen u16 xrcdn = 0; 1120e126ba97SEli Cohen int err; 1121e126ba97SEli Cohen 1122e126ba97SEli Cohen if (pd) { 1123e126ba97SEli Cohen dev = to_mdev(pd->device); 1124e126ba97SEli Cohen } else { 1125e126ba97SEli Cohen /* being cautious here */ 1126e126ba97SEli Cohen if (init_attr->qp_type != IB_QPT_XRC_TGT && 1127e126ba97SEli Cohen init_attr->qp_type != MLX5_IB_QPT_REG_UMR) { 1128e126ba97SEli Cohen pr_warn("%s: no PD for transport %s\n", __func__, 1129e126ba97SEli Cohen ib_qp_type_str(init_attr->qp_type)); 1130e126ba97SEli Cohen return ERR_PTR(-EINVAL); 1131e126ba97SEli Cohen } 1132e126ba97SEli Cohen dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device); 1133e126ba97SEli Cohen } 1134e126ba97SEli Cohen 1135e126ba97SEli Cohen switch (init_attr->qp_type) { 1136e126ba97SEli Cohen case IB_QPT_XRC_TGT: 1137e126ba97SEli Cohen case IB_QPT_XRC_INI: 1138e126ba97SEli Cohen if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_XRC)) { 1139e126ba97SEli Cohen mlx5_ib_dbg(dev, "XRC not supported\n"); 1140e126ba97SEli Cohen return ERR_PTR(-ENOSYS); 1141e126ba97SEli Cohen } 1142e126ba97SEli Cohen init_attr->recv_cq = NULL; 1143e126ba97SEli Cohen if (init_attr->qp_type == IB_QPT_XRC_TGT) { 1144e126ba97SEli Cohen xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn; 1145e126ba97SEli Cohen init_attr->send_cq = NULL; 1146e126ba97SEli Cohen } 1147e126ba97SEli Cohen 1148e126ba97SEli Cohen /* fall through */ 1149e126ba97SEli Cohen case IB_QPT_RC: 1150e126ba97SEli Cohen case IB_QPT_UC: 1151e126ba97SEli Cohen case IB_QPT_UD: 1152e126ba97SEli Cohen case IB_QPT_SMI: 1153e126ba97SEli Cohen case IB_QPT_GSI: 1154e126ba97SEli Cohen case MLX5_IB_QPT_REG_UMR: 1155e126ba97SEli Cohen qp = kzalloc(sizeof(*qp), GFP_KERNEL); 1156e126ba97SEli Cohen if (!qp) 1157e126ba97SEli Cohen return ERR_PTR(-ENOMEM); 1158e126ba97SEli Cohen 1159e126ba97SEli Cohen err = create_qp_common(dev, pd, init_attr, udata, qp); 1160e126ba97SEli Cohen if (err) { 1161e126ba97SEli Cohen mlx5_ib_dbg(dev, "create_qp_common failed\n"); 1162e126ba97SEli Cohen kfree(qp); 1163e126ba97SEli Cohen return ERR_PTR(err); 1164e126ba97SEli Cohen } 1165e126ba97SEli Cohen 1166e126ba97SEli Cohen if (is_qp0(init_attr->qp_type)) 1167e126ba97SEli Cohen qp->ibqp.qp_num = 0; 1168e126ba97SEli Cohen else if (is_qp1(init_attr->qp_type)) 1169e126ba97SEli Cohen qp->ibqp.qp_num = 1; 1170e126ba97SEli Cohen else 1171e126ba97SEli Cohen qp->ibqp.qp_num = qp->mqp.qpn; 1172e126ba97SEli Cohen 1173e126ba97SEli Cohen mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n", 1174e126ba97SEli Cohen qp->ibqp.qp_num, qp->mqp.qpn, to_mcq(init_attr->recv_cq)->mcq.cqn, 1175e126ba97SEli Cohen to_mcq(init_attr->send_cq)->mcq.cqn); 1176e126ba97SEli Cohen 1177e126ba97SEli Cohen qp->xrcdn = xrcdn; 1178e126ba97SEli Cohen 1179e126ba97SEli Cohen break; 1180e126ba97SEli Cohen 1181e126ba97SEli Cohen case IB_QPT_RAW_IPV6: 1182e126ba97SEli Cohen case IB_QPT_RAW_ETHERTYPE: 1183e126ba97SEli Cohen case IB_QPT_RAW_PACKET: 1184e126ba97SEli Cohen case IB_QPT_MAX: 1185e126ba97SEli Cohen default: 1186e126ba97SEli Cohen mlx5_ib_dbg(dev, "unsupported qp type %d\n", 1187e126ba97SEli Cohen init_attr->qp_type); 1188e126ba97SEli Cohen /* Don't support raw QPs */ 1189e126ba97SEli Cohen return ERR_PTR(-EINVAL); 1190e126ba97SEli Cohen } 1191e126ba97SEli Cohen 1192e126ba97SEli Cohen return &qp->ibqp; 1193e126ba97SEli Cohen } 1194e126ba97SEli Cohen 1195e126ba97SEli Cohen int mlx5_ib_destroy_qp(struct ib_qp *qp) 1196e126ba97SEli Cohen { 1197e126ba97SEli Cohen struct mlx5_ib_dev *dev = to_mdev(qp->device); 1198e126ba97SEli Cohen struct mlx5_ib_qp *mqp = to_mqp(qp); 1199e126ba97SEli Cohen 1200e126ba97SEli Cohen destroy_qp_common(dev, mqp); 1201e126ba97SEli Cohen 1202e126ba97SEli Cohen kfree(mqp); 1203e126ba97SEli Cohen 1204e126ba97SEli Cohen return 0; 1205e126ba97SEli Cohen } 1206e126ba97SEli Cohen 1207e126ba97SEli Cohen static __be32 to_mlx5_access_flags(struct mlx5_ib_qp *qp, const struct ib_qp_attr *attr, 1208e126ba97SEli Cohen int attr_mask) 1209e126ba97SEli Cohen { 1210e126ba97SEli Cohen u32 hw_access_flags = 0; 1211e126ba97SEli Cohen u8 dest_rd_atomic; 1212e126ba97SEli Cohen u32 access_flags; 1213e126ba97SEli Cohen 1214e126ba97SEli Cohen if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 1215e126ba97SEli Cohen dest_rd_atomic = attr->max_dest_rd_atomic; 1216e126ba97SEli Cohen else 1217e126ba97SEli Cohen dest_rd_atomic = qp->resp_depth; 1218e126ba97SEli Cohen 1219e126ba97SEli Cohen if (attr_mask & IB_QP_ACCESS_FLAGS) 1220e126ba97SEli Cohen access_flags = attr->qp_access_flags; 1221e126ba97SEli Cohen else 1222e126ba97SEli Cohen access_flags = qp->atomic_rd_en; 1223e126ba97SEli Cohen 1224e126ba97SEli Cohen if (!dest_rd_atomic) 1225e126ba97SEli Cohen access_flags &= IB_ACCESS_REMOTE_WRITE; 1226e126ba97SEli Cohen 1227e126ba97SEli Cohen if (access_flags & IB_ACCESS_REMOTE_READ) 1228e126ba97SEli Cohen hw_access_flags |= MLX5_QP_BIT_RRE; 1229e126ba97SEli Cohen if (access_flags & IB_ACCESS_REMOTE_ATOMIC) 1230e126ba97SEli Cohen hw_access_flags |= (MLX5_QP_BIT_RAE | MLX5_ATOMIC_MODE_CX); 1231e126ba97SEli Cohen if (access_flags & IB_ACCESS_REMOTE_WRITE) 1232e126ba97SEli Cohen hw_access_flags |= MLX5_QP_BIT_RWE; 1233e126ba97SEli Cohen 1234e126ba97SEli Cohen return cpu_to_be32(hw_access_flags); 1235e126ba97SEli Cohen } 1236e126ba97SEli Cohen 1237e126ba97SEli Cohen enum { 1238e126ba97SEli Cohen MLX5_PATH_FLAG_FL = 1 << 0, 1239e126ba97SEli Cohen MLX5_PATH_FLAG_FREE_AR = 1 << 1, 1240e126ba97SEli Cohen MLX5_PATH_FLAG_COUNTER = 1 << 2, 1241e126ba97SEli Cohen }; 1242e126ba97SEli Cohen 1243e126ba97SEli Cohen static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate) 1244e126ba97SEli Cohen { 1245e126ba97SEli Cohen if (rate == IB_RATE_PORT_CURRENT) { 1246e126ba97SEli Cohen return 0; 1247e126ba97SEli Cohen } else if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS) { 1248e126ba97SEli Cohen return -EINVAL; 1249e126ba97SEli Cohen } else { 1250e126ba97SEli Cohen while (rate != IB_RATE_2_5_GBPS && 1251e126ba97SEli Cohen !(1 << (rate + MLX5_STAT_RATE_OFFSET) & 1252e126ba97SEli Cohen dev->mdev.caps.stat_rate_support)) 1253e126ba97SEli Cohen --rate; 1254e126ba97SEli Cohen } 1255e126ba97SEli Cohen 1256e126ba97SEli Cohen return rate + MLX5_STAT_RATE_OFFSET; 1257e126ba97SEli Cohen } 1258e126ba97SEli Cohen 1259e126ba97SEli Cohen static int mlx5_set_path(struct mlx5_ib_dev *dev, const struct ib_ah_attr *ah, 1260e126ba97SEli Cohen struct mlx5_qp_path *path, u8 port, int attr_mask, 1261e126ba97SEli Cohen u32 path_flags, const struct ib_qp_attr *attr) 1262e126ba97SEli Cohen { 1263e126ba97SEli Cohen int err; 1264e126ba97SEli Cohen 1265e126ba97SEli Cohen path->fl = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0; 1266e126ba97SEli Cohen path->free_ar = (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x80 : 0; 1267e126ba97SEli Cohen 1268e126ba97SEli Cohen if (attr_mask & IB_QP_PKEY_INDEX) 1269e126ba97SEli Cohen path->pkey_index = attr->pkey_index; 1270e126ba97SEli Cohen 1271e126ba97SEli Cohen path->grh_mlid = ah->src_path_bits & 0x7f; 1272e126ba97SEli Cohen path->rlid = cpu_to_be16(ah->dlid); 1273e126ba97SEli Cohen 1274e126ba97SEli Cohen if (ah->ah_flags & IB_AH_GRH) { 1275e126ba97SEli Cohen path->grh_mlid |= 1 << 7; 1276e126ba97SEli Cohen path->mgid_index = ah->grh.sgid_index; 1277e126ba97SEli Cohen path->hop_limit = ah->grh.hop_limit; 1278e126ba97SEli Cohen path->tclass_flowlabel = 1279e126ba97SEli Cohen cpu_to_be32((ah->grh.traffic_class << 20) | 1280e126ba97SEli Cohen (ah->grh.flow_label)); 1281e126ba97SEli Cohen memcpy(path->rgid, ah->grh.dgid.raw, 16); 1282e126ba97SEli Cohen } 1283e126ba97SEli Cohen 1284e126ba97SEli Cohen err = ib_rate_to_mlx5(dev, ah->static_rate); 1285e126ba97SEli Cohen if (err < 0) 1286e126ba97SEli Cohen return err; 1287e126ba97SEli Cohen path->static_rate = err; 1288e126ba97SEli Cohen path->port = port; 1289e126ba97SEli Cohen 1290e126ba97SEli Cohen if (ah->ah_flags & IB_AH_GRH) { 1291e126ba97SEli Cohen if (ah->grh.sgid_index >= dev->mdev.caps.port[port - 1].gid_table_len) { 1292e126ba97SEli Cohen pr_err(KERN_ERR "sgid_index (%u) too large. max is %d\n", 1293e126ba97SEli Cohen ah->grh.sgid_index, dev->mdev.caps.port[port - 1].gid_table_len); 1294e126ba97SEli Cohen return -EINVAL; 1295e126ba97SEli Cohen } 1296e126ba97SEli Cohen 1297e126ba97SEli Cohen path->grh_mlid |= 1 << 7; 1298e126ba97SEli Cohen path->mgid_index = ah->grh.sgid_index; 1299e126ba97SEli Cohen path->hop_limit = ah->grh.hop_limit; 1300e126ba97SEli Cohen path->tclass_flowlabel = 1301e126ba97SEli Cohen cpu_to_be32((ah->grh.traffic_class << 20) | 1302e126ba97SEli Cohen (ah->grh.flow_label)); 1303e126ba97SEli Cohen memcpy(path->rgid, ah->grh.dgid.raw, 16); 1304e126ba97SEli Cohen } 1305e126ba97SEli Cohen 1306e126ba97SEli Cohen if (attr_mask & IB_QP_TIMEOUT) 1307e126ba97SEli Cohen path->ackto_lt = attr->timeout << 3; 1308e126ba97SEli Cohen 1309e126ba97SEli Cohen path->sl = ah->sl & 0xf; 1310e126ba97SEli Cohen 1311e126ba97SEli Cohen return 0; 1312e126ba97SEli Cohen } 1313e126ba97SEli Cohen 1314e126ba97SEli Cohen static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = { 1315e126ba97SEli Cohen [MLX5_QP_STATE_INIT] = { 1316e126ba97SEli Cohen [MLX5_QP_STATE_INIT] = { 1317e126ba97SEli Cohen [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE | 1318e126ba97SEli Cohen MLX5_QP_OPTPAR_RAE | 1319e126ba97SEli Cohen MLX5_QP_OPTPAR_RWE | 1320e126ba97SEli Cohen MLX5_QP_OPTPAR_PKEY_INDEX | 1321e126ba97SEli Cohen MLX5_QP_OPTPAR_PRI_PORT, 1322e126ba97SEli Cohen [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE | 1323e126ba97SEli Cohen MLX5_QP_OPTPAR_PKEY_INDEX | 1324e126ba97SEli Cohen MLX5_QP_OPTPAR_PRI_PORT, 1325e126ba97SEli Cohen [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX | 1326e126ba97SEli Cohen MLX5_QP_OPTPAR_Q_KEY | 1327e126ba97SEli Cohen MLX5_QP_OPTPAR_PRI_PORT, 1328e126ba97SEli Cohen }, 1329e126ba97SEli Cohen [MLX5_QP_STATE_RTR] = { 1330e126ba97SEli Cohen [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 1331e126ba97SEli Cohen MLX5_QP_OPTPAR_RRE | 1332e126ba97SEli Cohen MLX5_QP_OPTPAR_RAE | 1333e126ba97SEli Cohen MLX5_QP_OPTPAR_RWE | 1334e126ba97SEli Cohen MLX5_QP_OPTPAR_PKEY_INDEX, 1335e126ba97SEli Cohen [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 1336e126ba97SEli Cohen MLX5_QP_OPTPAR_RWE | 1337e126ba97SEli Cohen MLX5_QP_OPTPAR_PKEY_INDEX, 1338e126ba97SEli Cohen [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX | 1339e126ba97SEli Cohen MLX5_QP_OPTPAR_Q_KEY, 1340e126ba97SEli Cohen [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX | 1341e126ba97SEli Cohen MLX5_QP_OPTPAR_Q_KEY, 1342a4774e90SEli Cohen [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 1343a4774e90SEli Cohen MLX5_QP_OPTPAR_RRE | 1344a4774e90SEli Cohen MLX5_QP_OPTPAR_RAE | 1345a4774e90SEli Cohen MLX5_QP_OPTPAR_RWE | 1346a4774e90SEli Cohen MLX5_QP_OPTPAR_PKEY_INDEX, 1347e126ba97SEli Cohen }, 1348e126ba97SEli Cohen }, 1349e126ba97SEli Cohen [MLX5_QP_STATE_RTR] = { 1350e126ba97SEli Cohen [MLX5_QP_STATE_RTS] = { 1351e126ba97SEli Cohen [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 1352e126ba97SEli Cohen MLX5_QP_OPTPAR_RRE | 1353e126ba97SEli Cohen MLX5_QP_OPTPAR_RAE | 1354e126ba97SEli Cohen MLX5_QP_OPTPAR_RWE | 1355e126ba97SEli Cohen MLX5_QP_OPTPAR_PM_STATE | 1356e126ba97SEli Cohen MLX5_QP_OPTPAR_RNR_TIMEOUT, 1357e126ba97SEli Cohen [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 1358e126ba97SEli Cohen MLX5_QP_OPTPAR_RWE | 1359e126ba97SEli Cohen MLX5_QP_OPTPAR_PM_STATE, 1360e126ba97SEli Cohen [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY, 1361e126ba97SEli Cohen }, 1362e126ba97SEli Cohen }, 1363e126ba97SEli Cohen [MLX5_QP_STATE_RTS] = { 1364e126ba97SEli Cohen [MLX5_QP_STATE_RTS] = { 1365e126ba97SEli Cohen [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE | 1366e126ba97SEli Cohen MLX5_QP_OPTPAR_RAE | 1367e126ba97SEli Cohen MLX5_QP_OPTPAR_RWE | 1368e126ba97SEli Cohen MLX5_QP_OPTPAR_RNR_TIMEOUT | 1369c2a3431eSEli Cohen MLX5_QP_OPTPAR_PM_STATE | 1370c2a3431eSEli Cohen MLX5_QP_OPTPAR_ALT_ADDR_PATH, 1371e126ba97SEli Cohen [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE | 1372c2a3431eSEli Cohen MLX5_QP_OPTPAR_PM_STATE | 1373c2a3431eSEli Cohen MLX5_QP_OPTPAR_ALT_ADDR_PATH, 1374e126ba97SEli Cohen [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY | 1375e126ba97SEli Cohen MLX5_QP_OPTPAR_SRQN | 1376e126ba97SEli Cohen MLX5_QP_OPTPAR_CQN_RCV, 1377e126ba97SEli Cohen }, 1378e126ba97SEli Cohen }, 1379e126ba97SEli Cohen [MLX5_QP_STATE_SQER] = { 1380e126ba97SEli Cohen [MLX5_QP_STATE_RTS] = { 1381e126ba97SEli Cohen [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY, 1382e126ba97SEli Cohen [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY, 138375959f56SEli Cohen [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE, 1384a4774e90SEli Cohen [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RNR_TIMEOUT | 1385a4774e90SEli Cohen MLX5_QP_OPTPAR_RWE | 1386a4774e90SEli Cohen MLX5_QP_OPTPAR_RAE | 1387a4774e90SEli Cohen MLX5_QP_OPTPAR_RRE, 1388e126ba97SEli Cohen }, 1389e126ba97SEli Cohen }, 1390e126ba97SEli Cohen }; 1391e126ba97SEli Cohen 1392e126ba97SEli Cohen static int ib_nr_to_mlx5_nr(int ib_mask) 1393e126ba97SEli Cohen { 1394e126ba97SEli Cohen switch (ib_mask) { 1395e126ba97SEli Cohen case IB_QP_STATE: 1396e126ba97SEli Cohen return 0; 1397e126ba97SEli Cohen case IB_QP_CUR_STATE: 1398e126ba97SEli Cohen return 0; 1399e126ba97SEli Cohen case IB_QP_EN_SQD_ASYNC_NOTIFY: 1400e126ba97SEli Cohen return 0; 1401e126ba97SEli Cohen case IB_QP_ACCESS_FLAGS: 1402e126ba97SEli Cohen return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE | 1403e126ba97SEli Cohen MLX5_QP_OPTPAR_RAE; 1404e126ba97SEli Cohen case IB_QP_PKEY_INDEX: 1405e126ba97SEli Cohen return MLX5_QP_OPTPAR_PKEY_INDEX; 1406e126ba97SEli Cohen case IB_QP_PORT: 1407e126ba97SEli Cohen return MLX5_QP_OPTPAR_PRI_PORT; 1408e126ba97SEli Cohen case IB_QP_QKEY: 1409e126ba97SEli Cohen return MLX5_QP_OPTPAR_Q_KEY; 1410e126ba97SEli Cohen case IB_QP_AV: 1411e126ba97SEli Cohen return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH | 1412e126ba97SEli Cohen MLX5_QP_OPTPAR_PRI_PORT; 1413e126ba97SEli Cohen case IB_QP_PATH_MTU: 1414e126ba97SEli Cohen return 0; 1415e126ba97SEli Cohen case IB_QP_TIMEOUT: 1416e126ba97SEli Cohen return MLX5_QP_OPTPAR_ACK_TIMEOUT; 1417e126ba97SEli Cohen case IB_QP_RETRY_CNT: 1418e126ba97SEli Cohen return MLX5_QP_OPTPAR_RETRY_COUNT; 1419e126ba97SEli Cohen case IB_QP_RNR_RETRY: 1420e126ba97SEli Cohen return MLX5_QP_OPTPAR_RNR_RETRY; 1421e126ba97SEli Cohen case IB_QP_RQ_PSN: 1422e126ba97SEli Cohen return 0; 1423e126ba97SEli Cohen case IB_QP_MAX_QP_RD_ATOMIC: 1424e126ba97SEli Cohen return MLX5_QP_OPTPAR_SRA_MAX; 1425e126ba97SEli Cohen case IB_QP_ALT_PATH: 1426e126ba97SEli Cohen return MLX5_QP_OPTPAR_ALT_ADDR_PATH; 1427e126ba97SEli Cohen case IB_QP_MIN_RNR_TIMER: 1428e126ba97SEli Cohen return MLX5_QP_OPTPAR_RNR_TIMEOUT; 1429e126ba97SEli Cohen case IB_QP_SQ_PSN: 1430e126ba97SEli Cohen return 0; 1431e126ba97SEli Cohen case IB_QP_MAX_DEST_RD_ATOMIC: 1432e126ba97SEli Cohen return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE | 1433e126ba97SEli Cohen MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE; 1434e126ba97SEli Cohen case IB_QP_PATH_MIG_STATE: 1435e126ba97SEli Cohen return MLX5_QP_OPTPAR_PM_STATE; 1436e126ba97SEli Cohen case IB_QP_CAP: 1437e126ba97SEli Cohen return 0; 1438e126ba97SEli Cohen case IB_QP_DEST_QPN: 1439e126ba97SEli Cohen return 0; 1440e126ba97SEli Cohen } 1441e126ba97SEli Cohen return 0; 1442e126ba97SEli Cohen } 1443e126ba97SEli Cohen 1444e126ba97SEli Cohen static int ib_mask_to_mlx5_opt(int ib_mask) 1445e126ba97SEli Cohen { 1446e126ba97SEli Cohen int result = 0; 1447e126ba97SEli Cohen int i; 1448e126ba97SEli Cohen 1449e126ba97SEli Cohen for (i = 0; i < 8 * sizeof(int); i++) { 1450e126ba97SEli Cohen if ((1 << i) & ib_mask) 1451e126ba97SEli Cohen result |= ib_nr_to_mlx5_nr(1 << i); 1452e126ba97SEli Cohen } 1453e126ba97SEli Cohen 1454e126ba97SEli Cohen return result; 1455e126ba97SEli Cohen } 1456e126ba97SEli Cohen 1457e126ba97SEli Cohen static int __mlx5_ib_modify_qp(struct ib_qp *ibqp, 1458e126ba97SEli Cohen const struct ib_qp_attr *attr, int attr_mask, 1459e126ba97SEli Cohen enum ib_qp_state cur_state, enum ib_qp_state new_state) 1460e126ba97SEli Cohen { 1461e126ba97SEli Cohen struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 1462e126ba97SEli Cohen struct mlx5_ib_qp *qp = to_mqp(ibqp); 1463e126ba97SEli Cohen struct mlx5_ib_cq *send_cq, *recv_cq; 1464e126ba97SEli Cohen struct mlx5_qp_context *context; 1465e126ba97SEli Cohen struct mlx5_modify_qp_mbox_in *in; 1466e126ba97SEli Cohen struct mlx5_ib_pd *pd; 1467e126ba97SEli Cohen enum mlx5_qp_state mlx5_cur, mlx5_new; 1468e126ba97SEli Cohen enum mlx5_qp_optpar optpar; 1469e126ba97SEli Cohen int sqd_event; 1470e126ba97SEli Cohen int mlx5_st; 1471e126ba97SEli Cohen int err; 1472e126ba97SEli Cohen 1473e126ba97SEli Cohen in = kzalloc(sizeof(*in), GFP_KERNEL); 1474e126ba97SEli Cohen if (!in) 1475e126ba97SEli Cohen return -ENOMEM; 1476e126ba97SEli Cohen 1477e126ba97SEli Cohen context = &in->ctx; 1478e126ba97SEli Cohen err = to_mlx5_st(ibqp->qp_type); 1479e126ba97SEli Cohen if (err < 0) 1480e126ba97SEli Cohen goto out; 1481e126ba97SEli Cohen 1482e126ba97SEli Cohen context->flags = cpu_to_be32(err << 16); 1483e126ba97SEli Cohen 1484e126ba97SEli Cohen if (!(attr_mask & IB_QP_PATH_MIG_STATE)) { 1485e126ba97SEli Cohen context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11); 1486e126ba97SEli Cohen } else { 1487e126ba97SEli Cohen switch (attr->path_mig_state) { 1488e126ba97SEli Cohen case IB_MIG_MIGRATED: 1489e126ba97SEli Cohen context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11); 1490e126ba97SEli Cohen break; 1491e126ba97SEli Cohen case IB_MIG_REARM: 1492e126ba97SEli Cohen context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11); 1493e126ba97SEli Cohen break; 1494e126ba97SEli Cohen case IB_MIG_ARMED: 1495e126ba97SEli Cohen context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11); 1496e126ba97SEli Cohen break; 1497e126ba97SEli Cohen } 1498e126ba97SEli Cohen } 1499e126ba97SEli Cohen 1500e126ba97SEli Cohen if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) { 1501e126ba97SEli Cohen context->mtu_msgmax = (IB_MTU_256 << 5) | 8; 1502e126ba97SEli Cohen } else if (ibqp->qp_type == IB_QPT_UD || 1503e126ba97SEli Cohen ibqp->qp_type == MLX5_IB_QPT_REG_UMR) { 1504e126ba97SEli Cohen context->mtu_msgmax = (IB_MTU_4096 << 5) | 12; 1505e126ba97SEli Cohen } else if (attr_mask & IB_QP_PATH_MTU) { 1506e126ba97SEli Cohen if (attr->path_mtu < IB_MTU_256 || 1507e126ba97SEli Cohen attr->path_mtu > IB_MTU_4096) { 1508e126ba97SEli Cohen mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu); 1509e126ba97SEli Cohen err = -EINVAL; 1510e126ba97SEli Cohen goto out; 1511e126ba97SEli Cohen } 1512e126ba97SEli Cohen context->mtu_msgmax = (attr->path_mtu << 5) | dev->mdev.caps.log_max_msg; 1513e126ba97SEli Cohen } 1514e126ba97SEli Cohen 1515e126ba97SEli Cohen if (attr_mask & IB_QP_DEST_QPN) 1516e126ba97SEli Cohen context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num); 1517e126ba97SEli Cohen 1518e126ba97SEli Cohen if (attr_mask & IB_QP_PKEY_INDEX) 1519e126ba97SEli Cohen context->pri_path.pkey_index = attr->pkey_index; 1520e126ba97SEli Cohen 1521e126ba97SEli Cohen /* todo implement counter_index functionality */ 1522e126ba97SEli Cohen 1523e126ba97SEli Cohen if (is_sqp(ibqp->qp_type)) 1524e126ba97SEli Cohen context->pri_path.port = qp->port; 1525e126ba97SEli Cohen 1526e126ba97SEli Cohen if (attr_mask & IB_QP_PORT) 1527e126ba97SEli Cohen context->pri_path.port = attr->port_num; 1528e126ba97SEli Cohen 1529e126ba97SEli Cohen if (attr_mask & IB_QP_AV) { 1530e126ba97SEli Cohen err = mlx5_set_path(dev, &attr->ah_attr, &context->pri_path, 1531e126ba97SEli Cohen attr_mask & IB_QP_PORT ? attr->port_num : qp->port, 1532e126ba97SEli Cohen attr_mask, 0, attr); 1533e126ba97SEli Cohen if (err) 1534e126ba97SEli Cohen goto out; 1535e126ba97SEli Cohen } 1536e126ba97SEli Cohen 1537e126ba97SEli Cohen if (attr_mask & IB_QP_TIMEOUT) 1538e126ba97SEli Cohen context->pri_path.ackto_lt |= attr->timeout << 3; 1539e126ba97SEli Cohen 1540e126ba97SEli Cohen if (attr_mask & IB_QP_ALT_PATH) { 1541e126ba97SEli Cohen err = mlx5_set_path(dev, &attr->alt_ah_attr, &context->alt_path, 1542e126ba97SEli Cohen attr->alt_port_num, attr_mask, 0, attr); 1543e126ba97SEli Cohen if (err) 1544e126ba97SEli Cohen goto out; 1545e126ba97SEli Cohen } 1546e126ba97SEli Cohen 1547e126ba97SEli Cohen pd = get_pd(qp); 1548e126ba97SEli Cohen get_cqs(qp, &send_cq, &recv_cq); 1549e126ba97SEli Cohen 1550e126ba97SEli Cohen context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn); 1551e126ba97SEli Cohen context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0; 1552e126ba97SEli Cohen context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0; 1553e126ba97SEli Cohen context->params1 = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28); 1554e126ba97SEli Cohen 1555e126ba97SEli Cohen if (attr_mask & IB_QP_RNR_RETRY) 1556e126ba97SEli Cohen context->params1 |= cpu_to_be32(attr->rnr_retry << 13); 1557e126ba97SEli Cohen 1558e126ba97SEli Cohen if (attr_mask & IB_QP_RETRY_CNT) 1559e126ba97SEli Cohen context->params1 |= cpu_to_be32(attr->retry_cnt << 16); 1560e126ba97SEli Cohen 1561e126ba97SEli Cohen if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { 1562e126ba97SEli Cohen if (attr->max_rd_atomic) 1563e126ba97SEli Cohen context->params1 |= 1564e126ba97SEli Cohen cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21); 1565e126ba97SEli Cohen } 1566e126ba97SEli Cohen 1567e126ba97SEli Cohen if (attr_mask & IB_QP_SQ_PSN) 1568e126ba97SEli Cohen context->next_send_psn = cpu_to_be32(attr->sq_psn); 1569e126ba97SEli Cohen 1570e126ba97SEli Cohen if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { 1571e126ba97SEli Cohen if (attr->max_dest_rd_atomic) 1572e126ba97SEli Cohen context->params2 |= 1573e126ba97SEli Cohen cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21); 1574e126ba97SEli Cohen } 1575e126ba97SEli Cohen 1576e126ba97SEli Cohen if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) 1577e126ba97SEli Cohen context->params2 |= to_mlx5_access_flags(qp, attr, attr_mask); 1578e126ba97SEli Cohen 1579e126ba97SEli Cohen if (attr_mask & IB_QP_MIN_RNR_TIMER) 1580e126ba97SEli Cohen context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24); 1581e126ba97SEli Cohen 1582e126ba97SEli Cohen if (attr_mask & IB_QP_RQ_PSN) 1583e126ba97SEli Cohen context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn); 1584e126ba97SEli Cohen 1585e126ba97SEli Cohen if (attr_mask & IB_QP_QKEY) 1586e126ba97SEli Cohen context->qkey = cpu_to_be32(attr->qkey); 1587e126ba97SEli Cohen 1588e126ba97SEli Cohen if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) 1589e126ba97SEli Cohen context->db_rec_addr = cpu_to_be64(qp->db.dma); 1590e126ba97SEli Cohen 1591e126ba97SEli Cohen if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD && 1592e126ba97SEli Cohen attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify) 1593e126ba97SEli Cohen sqd_event = 1; 1594e126ba97SEli Cohen else 1595e126ba97SEli Cohen sqd_event = 0; 1596e126ba97SEli Cohen 1597e126ba97SEli Cohen if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) 1598e126ba97SEli Cohen context->sq_crq_size |= cpu_to_be16(1 << 4); 1599e126ba97SEli Cohen 1600e126ba97SEli Cohen 1601e126ba97SEli Cohen mlx5_cur = to_mlx5_state(cur_state); 1602e126ba97SEli Cohen mlx5_new = to_mlx5_state(new_state); 1603e126ba97SEli Cohen mlx5_st = to_mlx5_st(ibqp->qp_type); 160407c9113fSEli Cohen if (mlx5_st < 0) 1605e126ba97SEli Cohen goto out; 1606e126ba97SEli Cohen 1607e126ba97SEli Cohen optpar = ib_mask_to_mlx5_opt(attr_mask); 1608e126ba97SEli Cohen optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st]; 1609e126ba97SEli Cohen in->optparam = cpu_to_be32(optpar); 1610e126ba97SEli Cohen err = mlx5_core_qp_modify(&dev->mdev, to_mlx5_state(cur_state), 1611e126ba97SEli Cohen to_mlx5_state(new_state), in, sqd_event, 1612e126ba97SEli Cohen &qp->mqp); 1613e126ba97SEli Cohen if (err) 1614e126ba97SEli Cohen goto out; 1615e126ba97SEli Cohen 1616e126ba97SEli Cohen qp->state = new_state; 1617e126ba97SEli Cohen 1618e126ba97SEli Cohen if (attr_mask & IB_QP_ACCESS_FLAGS) 1619e126ba97SEli Cohen qp->atomic_rd_en = attr->qp_access_flags; 1620e126ba97SEli Cohen if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 1621e126ba97SEli Cohen qp->resp_depth = attr->max_dest_rd_atomic; 1622e126ba97SEli Cohen if (attr_mask & IB_QP_PORT) 1623e126ba97SEli Cohen qp->port = attr->port_num; 1624e126ba97SEli Cohen if (attr_mask & IB_QP_ALT_PATH) 1625e126ba97SEli Cohen qp->alt_port = attr->alt_port_num; 1626e126ba97SEli Cohen 1627e126ba97SEli Cohen /* 1628e126ba97SEli Cohen * If we moved a kernel QP to RESET, clean up all old CQ 1629e126ba97SEli Cohen * entries and reinitialize the QP. 1630e126ba97SEli Cohen */ 1631e126ba97SEli Cohen if (new_state == IB_QPS_RESET && !ibqp->uobject) { 1632e126ba97SEli Cohen mlx5_ib_cq_clean(recv_cq, qp->mqp.qpn, 1633e126ba97SEli Cohen ibqp->srq ? to_msrq(ibqp->srq) : NULL); 1634e126ba97SEli Cohen if (send_cq != recv_cq) 1635e126ba97SEli Cohen mlx5_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); 1636e126ba97SEli Cohen 1637e126ba97SEli Cohen qp->rq.head = 0; 1638e126ba97SEli Cohen qp->rq.tail = 0; 1639e126ba97SEli Cohen qp->sq.head = 0; 1640e126ba97SEli Cohen qp->sq.tail = 0; 1641e126ba97SEli Cohen qp->sq.cur_post = 0; 1642e126ba97SEli Cohen qp->sq.last_poll = 0; 1643e126ba97SEli Cohen qp->db.db[MLX5_RCV_DBR] = 0; 1644e126ba97SEli Cohen qp->db.db[MLX5_SND_DBR] = 0; 1645e126ba97SEli Cohen } 1646e126ba97SEli Cohen 1647e126ba97SEli Cohen out: 1648e126ba97SEli Cohen kfree(in); 1649e126ba97SEli Cohen return err; 1650e126ba97SEli Cohen } 1651e126ba97SEli Cohen 1652e126ba97SEli Cohen int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 1653e126ba97SEli Cohen int attr_mask, struct ib_udata *udata) 1654e126ba97SEli Cohen { 1655e126ba97SEli Cohen struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 1656e126ba97SEli Cohen struct mlx5_ib_qp *qp = to_mqp(ibqp); 1657e126ba97SEli Cohen enum ib_qp_state cur_state, new_state; 1658e126ba97SEli Cohen int err = -EINVAL; 1659e126ba97SEli Cohen int port; 1660e126ba97SEli Cohen 1661e126ba97SEli Cohen mutex_lock(&qp->mutex); 1662e126ba97SEli Cohen 1663e126ba97SEli Cohen cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state; 1664e126ba97SEli Cohen new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state; 1665e126ba97SEli Cohen 1666e126ba97SEli Cohen if (ibqp->qp_type != MLX5_IB_QPT_REG_UMR && 1667e126ba97SEli Cohen !ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask)) 1668e126ba97SEli Cohen goto out; 1669e126ba97SEli Cohen 1670e126ba97SEli Cohen if ((attr_mask & IB_QP_PORT) && 1671e126ba97SEli Cohen (attr->port_num == 0 || attr->port_num > dev->mdev.caps.num_ports)) 1672e126ba97SEli Cohen goto out; 1673e126ba97SEli Cohen 1674e126ba97SEli Cohen if (attr_mask & IB_QP_PKEY_INDEX) { 1675e126ba97SEli Cohen port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; 1676e126ba97SEli Cohen if (attr->pkey_index >= dev->mdev.caps.port[port - 1].pkey_table_len) 1677e126ba97SEli Cohen goto out; 1678e126ba97SEli Cohen } 1679e126ba97SEli Cohen 1680e126ba97SEli Cohen if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && 1681e126ba97SEli Cohen attr->max_rd_atomic > dev->mdev.caps.max_ra_res_qp) 1682e126ba97SEli Cohen goto out; 1683e126ba97SEli Cohen 1684e126ba97SEli Cohen if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && 1685e126ba97SEli Cohen attr->max_dest_rd_atomic > dev->mdev.caps.max_ra_req_qp) 1686e126ba97SEli Cohen goto out; 1687e126ba97SEli Cohen 1688e126ba97SEli Cohen if (cur_state == new_state && cur_state == IB_QPS_RESET) { 1689e126ba97SEli Cohen err = 0; 1690e126ba97SEli Cohen goto out; 1691e126ba97SEli Cohen } 1692e126ba97SEli Cohen 1693e126ba97SEli Cohen err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state); 1694e126ba97SEli Cohen 1695e126ba97SEli Cohen out: 1696e126ba97SEli Cohen mutex_unlock(&qp->mutex); 1697e126ba97SEli Cohen return err; 1698e126ba97SEli Cohen } 1699e126ba97SEli Cohen 1700e126ba97SEli Cohen static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq) 1701e126ba97SEli Cohen { 1702e126ba97SEli Cohen struct mlx5_ib_cq *cq; 1703e126ba97SEli Cohen unsigned cur; 1704e126ba97SEli Cohen 1705e126ba97SEli Cohen cur = wq->head - wq->tail; 1706e126ba97SEli Cohen if (likely(cur + nreq < wq->max_post)) 1707e126ba97SEli Cohen return 0; 1708e126ba97SEli Cohen 1709e126ba97SEli Cohen cq = to_mcq(ib_cq); 1710e126ba97SEli Cohen spin_lock(&cq->lock); 1711e126ba97SEli Cohen cur = wq->head - wq->tail; 1712e126ba97SEli Cohen spin_unlock(&cq->lock); 1713e126ba97SEli Cohen 1714e126ba97SEli Cohen return cur + nreq >= wq->max_post; 1715e126ba97SEli Cohen } 1716e126ba97SEli Cohen 1717e126ba97SEli Cohen static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg, 1718e126ba97SEli Cohen u64 remote_addr, u32 rkey) 1719e126ba97SEli Cohen { 1720e126ba97SEli Cohen rseg->raddr = cpu_to_be64(remote_addr); 1721e126ba97SEli Cohen rseg->rkey = cpu_to_be32(rkey); 1722e126ba97SEli Cohen rseg->reserved = 0; 1723e126ba97SEli Cohen } 1724e126ba97SEli Cohen 1725e126ba97SEli Cohen static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg, 1726e126ba97SEli Cohen struct ib_send_wr *wr) 1727e126ba97SEli Cohen { 1728e126ba97SEli Cohen memcpy(&dseg->av, &to_mah(wr->wr.ud.ah)->av, sizeof(struct mlx5_av)); 1729e126ba97SEli Cohen dseg->av.dqp_dct = cpu_to_be32(wr->wr.ud.remote_qpn | MLX5_EXTENDED_UD_AV); 1730e126ba97SEli Cohen dseg->av.key.qkey.qkey = cpu_to_be32(wr->wr.ud.remote_qkey); 1731e126ba97SEli Cohen } 1732e126ba97SEli Cohen 1733e126ba97SEli Cohen static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg) 1734e126ba97SEli Cohen { 1735e126ba97SEli Cohen dseg->byte_count = cpu_to_be32(sg->length); 1736e126ba97SEli Cohen dseg->lkey = cpu_to_be32(sg->lkey); 1737e126ba97SEli Cohen dseg->addr = cpu_to_be64(sg->addr); 1738e126ba97SEli Cohen } 1739e126ba97SEli Cohen 1740e126ba97SEli Cohen static __be16 get_klm_octo(int npages) 1741e126ba97SEli Cohen { 1742e126ba97SEli Cohen return cpu_to_be16(ALIGN(npages, 8) / 2); 1743e126ba97SEli Cohen } 1744e126ba97SEli Cohen 1745e126ba97SEli Cohen static __be64 frwr_mkey_mask(void) 1746e126ba97SEli Cohen { 1747e126ba97SEli Cohen u64 result; 1748e126ba97SEli Cohen 1749e126ba97SEli Cohen result = MLX5_MKEY_MASK_LEN | 1750e126ba97SEli Cohen MLX5_MKEY_MASK_PAGE_SIZE | 1751e126ba97SEli Cohen MLX5_MKEY_MASK_START_ADDR | 1752e126ba97SEli Cohen MLX5_MKEY_MASK_EN_RINVAL | 1753e126ba97SEli Cohen MLX5_MKEY_MASK_KEY | 1754e126ba97SEli Cohen MLX5_MKEY_MASK_LR | 1755e126ba97SEli Cohen MLX5_MKEY_MASK_LW | 1756e126ba97SEli Cohen MLX5_MKEY_MASK_RR | 1757e126ba97SEli Cohen MLX5_MKEY_MASK_RW | 1758e126ba97SEli Cohen MLX5_MKEY_MASK_A | 1759e126ba97SEli Cohen MLX5_MKEY_MASK_SMALL_FENCE | 1760e126ba97SEli Cohen MLX5_MKEY_MASK_FREE; 1761e126ba97SEli Cohen 1762e126ba97SEli Cohen return cpu_to_be64(result); 1763e126ba97SEli Cohen } 1764e126ba97SEli Cohen 1765e126ba97SEli Cohen static void set_frwr_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr, 1766e126ba97SEli Cohen struct ib_send_wr *wr, int li) 1767e126ba97SEli Cohen { 1768e126ba97SEli Cohen memset(umr, 0, sizeof(*umr)); 1769e126ba97SEli Cohen 1770e126ba97SEli Cohen if (li) { 1771e126ba97SEli Cohen umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE); 1772e126ba97SEli Cohen umr->flags = 1 << 7; 1773e126ba97SEli Cohen return; 1774e126ba97SEli Cohen } 1775e126ba97SEli Cohen 1776e126ba97SEli Cohen umr->flags = (1 << 5); /* fail if not free */ 1777e126ba97SEli Cohen umr->klm_octowords = get_klm_octo(wr->wr.fast_reg.page_list_len); 1778e126ba97SEli Cohen umr->mkey_mask = frwr_mkey_mask(); 1779e126ba97SEli Cohen } 1780e126ba97SEli Cohen 1781e126ba97SEli Cohen static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr, 1782e126ba97SEli Cohen struct ib_send_wr *wr) 1783e126ba97SEli Cohen { 1784e126ba97SEli Cohen struct umr_wr *umrwr = (struct umr_wr *)&wr->wr.fast_reg; 1785e126ba97SEli Cohen u64 mask; 1786e126ba97SEli Cohen 1787e126ba97SEli Cohen memset(umr, 0, sizeof(*umr)); 1788e126ba97SEli Cohen 1789e126ba97SEli Cohen if (!(wr->send_flags & MLX5_IB_SEND_UMR_UNREG)) { 1790e126ba97SEli Cohen umr->flags = 1 << 5; /* fail if not free */ 1791e126ba97SEli Cohen umr->klm_octowords = get_klm_octo(umrwr->npages); 1792e126ba97SEli Cohen mask = MLX5_MKEY_MASK_LEN | 1793e126ba97SEli Cohen MLX5_MKEY_MASK_PAGE_SIZE | 1794e126ba97SEli Cohen MLX5_MKEY_MASK_START_ADDR | 1795e126ba97SEli Cohen MLX5_MKEY_MASK_PD | 1796e126ba97SEli Cohen MLX5_MKEY_MASK_LR | 1797e126ba97SEli Cohen MLX5_MKEY_MASK_LW | 1798746b5583SEli Cohen MLX5_MKEY_MASK_KEY | 1799e126ba97SEli Cohen MLX5_MKEY_MASK_RR | 1800e126ba97SEli Cohen MLX5_MKEY_MASK_RW | 1801e126ba97SEli Cohen MLX5_MKEY_MASK_A | 1802e126ba97SEli Cohen MLX5_MKEY_MASK_FREE; 1803e126ba97SEli Cohen umr->mkey_mask = cpu_to_be64(mask); 1804e126ba97SEli Cohen } else { 1805e126ba97SEli Cohen umr->flags = 2 << 5; /* fail if free */ 1806e126ba97SEli Cohen mask = MLX5_MKEY_MASK_FREE; 1807e126ba97SEli Cohen umr->mkey_mask = cpu_to_be64(mask); 1808e126ba97SEli Cohen } 1809e126ba97SEli Cohen 1810e126ba97SEli Cohen if (!wr->num_sge) 1811e126ba97SEli Cohen umr->flags |= (1 << 7); /* inline */ 1812e126ba97SEli Cohen } 1813e126ba97SEli Cohen 1814e126ba97SEli Cohen static u8 get_umr_flags(int acc) 1815e126ba97SEli Cohen { 1816e126ba97SEli Cohen return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC : 0) | 1817e126ba97SEli Cohen (acc & IB_ACCESS_REMOTE_WRITE ? MLX5_PERM_REMOTE_WRITE : 0) | 1818e126ba97SEli Cohen (acc & IB_ACCESS_REMOTE_READ ? MLX5_PERM_REMOTE_READ : 0) | 1819e126ba97SEli Cohen (acc & IB_ACCESS_LOCAL_WRITE ? MLX5_PERM_LOCAL_WRITE : 0) | 1820e126ba97SEli Cohen MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN | MLX5_ACCESS_MODE_MTT; 1821e126ba97SEli Cohen } 1822e126ba97SEli Cohen 1823e126ba97SEli Cohen static void set_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr, 1824e126ba97SEli Cohen int li, int *writ) 1825e126ba97SEli Cohen { 1826e126ba97SEli Cohen memset(seg, 0, sizeof(*seg)); 1827e126ba97SEli Cohen if (li) { 1828e126ba97SEli Cohen seg->status = 1 << 6; 1829e126ba97SEli Cohen return; 1830e126ba97SEli Cohen } 1831e126ba97SEli Cohen 1832e126ba97SEli Cohen seg->flags = get_umr_flags(wr->wr.fast_reg.access_flags); 1833e126ba97SEli Cohen *writ = seg->flags & (MLX5_PERM_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE); 1834e126ba97SEli Cohen seg->qpn_mkey7_0 = cpu_to_be32((wr->wr.fast_reg.rkey & 0xff) | 0xffffff00); 1835e126ba97SEli Cohen seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL); 1836e126ba97SEli Cohen seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start); 1837e126ba97SEli Cohen seg->len = cpu_to_be64(wr->wr.fast_reg.length); 1838e126ba97SEli Cohen seg->xlt_oct_size = cpu_to_be32((wr->wr.fast_reg.page_list_len + 1) / 2); 1839e126ba97SEli Cohen seg->log2_page_size = wr->wr.fast_reg.page_shift; 1840e126ba97SEli Cohen } 1841e126ba97SEli Cohen 1842e126ba97SEli Cohen static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr) 1843e126ba97SEli Cohen { 1844e126ba97SEli Cohen memset(seg, 0, sizeof(*seg)); 1845e126ba97SEli Cohen if (wr->send_flags & MLX5_IB_SEND_UMR_UNREG) { 1846e126ba97SEli Cohen seg->status = 1 << 6; 1847e126ba97SEli Cohen return; 1848e126ba97SEli Cohen } 1849e126ba97SEli Cohen 1850e126ba97SEli Cohen seg->flags = convert_access(wr->wr.fast_reg.access_flags); 1851e126ba97SEli Cohen seg->flags_pd = cpu_to_be32(to_mpd((struct ib_pd *)wr->wr.fast_reg.page_list)->pdn); 1852e126ba97SEli Cohen seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start); 1853e126ba97SEli Cohen seg->len = cpu_to_be64(wr->wr.fast_reg.length); 1854e126ba97SEli Cohen seg->log2_page_size = wr->wr.fast_reg.page_shift; 1855746b5583SEli Cohen seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 | 1856746b5583SEli Cohen mlx5_mkey_variant(wr->wr.fast_reg.rkey)); 1857e126ba97SEli Cohen } 1858e126ba97SEli Cohen 1859e126ba97SEli Cohen static void set_frwr_pages(struct mlx5_wqe_data_seg *dseg, 1860e126ba97SEli Cohen struct ib_send_wr *wr, 1861e126ba97SEli Cohen struct mlx5_core_dev *mdev, 1862e126ba97SEli Cohen struct mlx5_ib_pd *pd, 1863e126ba97SEli Cohen int writ) 1864e126ba97SEli Cohen { 1865e126ba97SEli Cohen struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(wr->wr.fast_reg.page_list); 1866e126ba97SEli Cohen u64 *page_list = wr->wr.fast_reg.page_list->page_list; 1867e126ba97SEli Cohen u64 perm = MLX5_EN_RD | (writ ? MLX5_EN_WR : 0); 1868e126ba97SEli Cohen int i; 1869e126ba97SEli Cohen 1870e126ba97SEli Cohen for (i = 0; i < wr->wr.fast_reg.page_list_len; i++) 1871e126ba97SEli Cohen mfrpl->mapped_page_list[i] = cpu_to_be64(page_list[i] | perm); 1872e126ba97SEli Cohen dseg->addr = cpu_to_be64(mfrpl->map); 1873e126ba97SEli Cohen dseg->byte_count = cpu_to_be32(ALIGN(sizeof(u64) * wr->wr.fast_reg.page_list_len, 64)); 1874e126ba97SEli Cohen dseg->lkey = cpu_to_be32(pd->pa_lkey); 1875e126ba97SEli Cohen } 1876e126ba97SEli Cohen 1877e126ba97SEli Cohen static __be32 send_ieth(struct ib_send_wr *wr) 1878e126ba97SEli Cohen { 1879e126ba97SEli Cohen switch (wr->opcode) { 1880e126ba97SEli Cohen case IB_WR_SEND_WITH_IMM: 1881e126ba97SEli Cohen case IB_WR_RDMA_WRITE_WITH_IMM: 1882e126ba97SEli Cohen return wr->ex.imm_data; 1883e126ba97SEli Cohen 1884e126ba97SEli Cohen case IB_WR_SEND_WITH_INV: 1885e126ba97SEli Cohen return cpu_to_be32(wr->ex.invalidate_rkey); 1886e126ba97SEli Cohen 1887e126ba97SEli Cohen default: 1888e126ba97SEli Cohen return 0; 1889e126ba97SEli Cohen } 1890e126ba97SEli Cohen } 1891e126ba97SEli Cohen 1892e126ba97SEli Cohen static u8 calc_sig(void *wqe, int size) 1893e126ba97SEli Cohen { 1894e126ba97SEli Cohen u8 *p = wqe; 1895e126ba97SEli Cohen u8 res = 0; 1896e126ba97SEli Cohen int i; 1897e126ba97SEli Cohen 1898e126ba97SEli Cohen for (i = 0; i < size; i++) 1899e126ba97SEli Cohen res ^= p[i]; 1900e126ba97SEli Cohen 1901e126ba97SEli Cohen return ~res; 1902e126ba97SEli Cohen } 1903e126ba97SEli Cohen 1904e126ba97SEli Cohen static u8 wq_sig(void *wqe) 1905e126ba97SEli Cohen { 1906e126ba97SEli Cohen return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4); 1907e126ba97SEli Cohen } 1908e126ba97SEli Cohen 1909e126ba97SEli Cohen static int set_data_inl_seg(struct mlx5_ib_qp *qp, struct ib_send_wr *wr, 1910e126ba97SEli Cohen void *wqe, int *sz) 1911e126ba97SEli Cohen { 1912e126ba97SEli Cohen struct mlx5_wqe_inline_seg *seg; 1913e126ba97SEli Cohen void *qend = qp->sq.qend; 1914e126ba97SEli Cohen void *addr; 1915e126ba97SEli Cohen int inl = 0; 1916e126ba97SEli Cohen int copy; 1917e126ba97SEli Cohen int len; 1918e126ba97SEli Cohen int i; 1919e126ba97SEli Cohen 1920e126ba97SEli Cohen seg = wqe; 1921e126ba97SEli Cohen wqe += sizeof(*seg); 1922e126ba97SEli Cohen for (i = 0; i < wr->num_sge; i++) { 1923e126ba97SEli Cohen addr = (void *)(unsigned long)(wr->sg_list[i].addr); 1924e126ba97SEli Cohen len = wr->sg_list[i].length; 1925e126ba97SEli Cohen inl += len; 1926e126ba97SEli Cohen 1927e126ba97SEli Cohen if (unlikely(inl > qp->max_inline_data)) 1928e126ba97SEli Cohen return -ENOMEM; 1929e126ba97SEli Cohen 1930e126ba97SEli Cohen if (unlikely(wqe + len > qend)) { 1931e126ba97SEli Cohen copy = qend - wqe; 1932e126ba97SEli Cohen memcpy(wqe, addr, copy); 1933e126ba97SEli Cohen addr += copy; 1934e126ba97SEli Cohen len -= copy; 1935e126ba97SEli Cohen wqe = mlx5_get_send_wqe(qp, 0); 1936e126ba97SEli Cohen } 1937e126ba97SEli Cohen memcpy(wqe, addr, len); 1938e126ba97SEli Cohen wqe += len; 1939e126ba97SEli Cohen } 1940e126ba97SEli Cohen 1941e126ba97SEli Cohen seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG); 1942e126ba97SEli Cohen 1943e126ba97SEli Cohen *sz = ALIGN(inl + sizeof(seg->byte_count), 16) / 16; 1944e126ba97SEli Cohen 1945e126ba97SEli Cohen return 0; 1946e126ba97SEli Cohen } 1947e126ba97SEli Cohen 1948e126ba97SEli Cohen static int set_frwr_li_wr(void **seg, struct ib_send_wr *wr, int *size, 1949e126ba97SEli Cohen struct mlx5_core_dev *mdev, struct mlx5_ib_pd *pd, struct mlx5_ib_qp *qp) 1950e126ba97SEli Cohen { 1951e126ba97SEli Cohen int writ = 0; 1952e126ba97SEli Cohen int li; 1953e126ba97SEli Cohen 1954e126ba97SEli Cohen li = wr->opcode == IB_WR_LOCAL_INV ? 1 : 0; 1955e126ba97SEli Cohen if (unlikely(wr->send_flags & IB_SEND_INLINE)) 1956e126ba97SEli Cohen return -EINVAL; 1957e126ba97SEli Cohen 1958e126ba97SEli Cohen set_frwr_umr_segment(*seg, wr, li); 1959e126ba97SEli Cohen *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg); 1960e126ba97SEli Cohen *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16; 1961e126ba97SEli Cohen if (unlikely((*seg == qp->sq.qend))) 1962e126ba97SEli Cohen *seg = mlx5_get_send_wqe(qp, 0); 1963e126ba97SEli Cohen set_mkey_segment(*seg, wr, li, &writ); 1964e126ba97SEli Cohen *seg += sizeof(struct mlx5_mkey_seg); 1965e126ba97SEli Cohen *size += sizeof(struct mlx5_mkey_seg) / 16; 1966e126ba97SEli Cohen if (unlikely((*seg == qp->sq.qend))) 1967e126ba97SEli Cohen *seg = mlx5_get_send_wqe(qp, 0); 1968e126ba97SEli Cohen if (!li) { 19699641b74eSEli Cohen if (unlikely(wr->wr.fast_reg.page_list_len > 19709641b74eSEli Cohen wr->wr.fast_reg.page_list->max_page_list_len)) 19719641b74eSEli Cohen return -ENOMEM; 19729641b74eSEli Cohen 1973e126ba97SEli Cohen set_frwr_pages(*seg, wr, mdev, pd, writ); 1974e126ba97SEli Cohen *seg += sizeof(struct mlx5_wqe_data_seg); 1975e126ba97SEli Cohen *size += (sizeof(struct mlx5_wqe_data_seg) / 16); 1976e126ba97SEli Cohen } 1977e126ba97SEli Cohen return 0; 1978e126ba97SEli Cohen } 1979e126ba97SEli Cohen 1980e126ba97SEli Cohen static void dump_wqe(struct mlx5_ib_qp *qp, int idx, int size_16) 1981e126ba97SEli Cohen { 1982e126ba97SEli Cohen __be32 *p = NULL; 1983e126ba97SEli Cohen int tidx = idx; 1984e126ba97SEli Cohen int i, j; 1985e126ba97SEli Cohen 1986e126ba97SEli Cohen pr_debug("dump wqe at %p\n", mlx5_get_send_wqe(qp, tidx)); 1987e126ba97SEli Cohen for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) { 1988e126ba97SEli Cohen if ((i & 0xf) == 0) { 1989e126ba97SEli Cohen void *buf = mlx5_get_send_wqe(qp, tidx); 1990e126ba97SEli Cohen tidx = (tidx + 1) & (qp->sq.wqe_cnt - 1); 1991e126ba97SEli Cohen p = buf; 1992e126ba97SEli Cohen j = 0; 1993e126ba97SEli Cohen } 1994e126ba97SEli Cohen pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]), 1995e126ba97SEli Cohen be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]), 1996e126ba97SEli Cohen be32_to_cpu(p[j + 3])); 1997e126ba97SEli Cohen } 1998e126ba97SEli Cohen } 1999e126ba97SEli Cohen 2000e126ba97SEli Cohen static void mlx5_bf_copy(u64 __iomem *dst, u64 *src, 2001e126ba97SEli Cohen unsigned bytecnt, struct mlx5_ib_qp *qp) 2002e126ba97SEli Cohen { 2003e126ba97SEli Cohen while (bytecnt > 0) { 2004e126ba97SEli Cohen __iowrite64_copy(dst++, src++, 8); 2005e126ba97SEli Cohen __iowrite64_copy(dst++, src++, 8); 2006e126ba97SEli Cohen __iowrite64_copy(dst++, src++, 8); 2007e126ba97SEli Cohen __iowrite64_copy(dst++, src++, 8); 2008e126ba97SEli Cohen __iowrite64_copy(dst++, src++, 8); 2009e126ba97SEli Cohen __iowrite64_copy(dst++, src++, 8); 2010e126ba97SEli Cohen __iowrite64_copy(dst++, src++, 8); 2011e126ba97SEli Cohen __iowrite64_copy(dst++, src++, 8); 2012e126ba97SEli Cohen bytecnt -= 64; 2013e126ba97SEli Cohen if (unlikely(src == qp->sq.qend)) 2014e126ba97SEli Cohen src = mlx5_get_send_wqe(qp, 0); 2015e126ba97SEli Cohen } 2016e126ba97SEli Cohen } 2017e126ba97SEli Cohen 2018e126ba97SEli Cohen static u8 get_fence(u8 fence, struct ib_send_wr *wr) 2019e126ba97SEli Cohen { 2020e126ba97SEli Cohen if (unlikely(wr->opcode == IB_WR_LOCAL_INV && 2021e126ba97SEli Cohen wr->send_flags & IB_SEND_FENCE)) 2022e126ba97SEli Cohen return MLX5_FENCE_MODE_STRONG_ORDERING; 2023e126ba97SEli Cohen 2024e126ba97SEli Cohen if (unlikely(fence)) { 2025e126ba97SEli Cohen if (wr->send_flags & IB_SEND_FENCE) 2026e126ba97SEli Cohen return MLX5_FENCE_MODE_SMALL_AND_FENCE; 2027e126ba97SEli Cohen else 2028e126ba97SEli Cohen return fence; 2029e126ba97SEli Cohen 2030e126ba97SEli Cohen } else { 2031e126ba97SEli Cohen return 0; 2032e126ba97SEli Cohen } 2033e126ba97SEli Cohen } 2034e126ba97SEli Cohen 2035e126ba97SEli Cohen int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 2036e126ba97SEli Cohen struct ib_send_wr **bad_wr) 2037e126ba97SEli Cohen { 2038e126ba97SEli Cohen struct mlx5_wqe_ctrl_seg *ctrl = NULL; /* compiler warning */ 2039e126ba97SEli Cohen struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 2040e126ba97SEli Cohen struct mlx5_core_dev *mdev = &dev->mdev; 2041e126ba97SEli Cohen struct mlx5_ib_qp *qp = to_mqp(ibqp); 2042e126ba97SEli Cohen struct mlx5_wqe_data_seg *dpseg; 2043e126ba97SEli Cohen struct mlx5_wqe_xrc_seg *xrc; 2044e126ba97SEli Cohen struct mlx5_bf *bf = qp->bf; 2045e126ba97SEli Cohen int uninitialized_var(size); 2046e126ba97SEli Cohen void *qend = qp->sq.qend; 2047e126ba97SEli Cohen unsigned long flags; 2048e126ba97SEli Cohen u32 mlx5_opcode; 2049e126ba97SEli Cohen unsigned idx; 2050e126ba97SEli Cohen int err = 0; 2051e126ba97SEli Cohen int inl = 0; 2052e126ba97SEli Cohen int num_sge; 2053e126ba97SEli Cohen void *seg; 2054e126ba97SEli Cohen int nreq; 2055e126ba97SEli Cohen int i; 2056e126ba97SEli Cohen u8 next_fence = 0; 2057e126ba97SEli Cohen u8 opmod = 0; 2058e126ba97SEli Cohen u8 fence; 2059e126ba97SEli Cohen 2060e126ba97SEli Cohen spin_lock_irqsave(&qp->sq.lock, flags); 2061e126ba97SEli Cohen 2062e126ba97SEli Cohen for (nreq = 0; wr; nreq++, wr = wr->next) { 2063e126ba97SEli Cohen if (unlikely(wr->opcode >= sizeof(mlx5_ib_opcode) / sizeof(mlx5_ib_opcode[0]))) { 2064e126ba97SEli Cohen mlx5_ib_warn(dev, "\n"); 2065e126ba97SEli Cohen err = -EINVAL; 2066e126ba97SEli Cohen *bad_wr = wr; 2067e126ba97SEli Cohen goto out; 2068e126ba97SEli Cohen } 2069e126ba97SEli Cohen 2070e126ba97SEli Cohen if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq))) { 2071e126ba97SEli Cohen mlx5_ib_warn(dev, "\n"); 2072e126ba97SEli Cohen err = -ENOMEM; 2073e126ba97SEli Cohen *bad_wr = wr; 2074e126ba97SEli Cohen goto out; 2075e126ba97SEli Cohen } 2076e126ba97SEli Cohen 2077e126ba97SEli Cohen fence = qp->fm_cache; 2078e126ba97SEli Cohen num_sge = wr->num_sge; 2079e126ba97SEli Cohen if (unlikely(num_sge > qp->sq.max_gs)) { 2080e126ba97SEli Cohen mlx5_ib_warn(dev, "\n"); 2081e126ba97SEli Cohen err = -ENOMEM; 2082e126ba97SEli Cohen *bad_wr = wr; 2083e126ba97SEli Cohen goto out; 2084e126ba97SEli Cohen } 2085e126ba97SEli Cohen 2086e126ba97SEli Cohen idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1); 2087e126ba97SEli Cohen seg = mlx5_get_send_wqe(qp, idx); 2088e126ba97SEli Cohen ctrl = seg; 2089e126ba97SEli Cohen *(uint32_t *)(seg + 8) = 0; 2090e126ba97SEli Cohen ctrl->imm = send_ieth(wr); 2091e126ba97SEli Cohen ctrl->fm_ce_se = qp->sq_signal_bits | 2092e126ba97SEli Cohen (wr->send_flags & IB_SEND_SIGNALED ? 2093e126ba97SEli Cohen MLX5_WQE_CTRL_CQ_UPDATE : 0) | 2094e126ba97SEli Cohen (wr->send_flags & IB_SEND_SOLICITED ? 2095e126ba97SEli Cohen MLX5_WQE_CTRL_SOLICITED : 0); 2096e126ba97SEli Cohen 2097e126ba97SEli Cohen seg += sizeof(*ctrl); 2098e126ba97SEli Cohen size = sizeof(*ctrl) / 16; 2099e126ba97SEli Cohen 2100e126ba97SEli Cohen switch (ibqp->qp_type) { 2101e126ba97SEli Cohen case IB_QPT_XRC_INI: 2102e126ba97SEli Cohen xrc = seg; 2103e126ba97SEli Cohen xrc->xrc_srqn = htonl(wr->xrc_remote_srq_num); 2104e126ba97SEli Cohen seg += sizeof(*xrc); 2105e126ba97SEli Cohen size += sizeof(*xrc) / 16; 2106e126ba97SEli Cohen /* fall through */ 2107e126ba97SEli Cohen case IB_QPT_RC: 2108e126ba97SEli Cohen switch (wr->opcode) { 2109e126ba97SEli Cohen case IB_WR_RDMA_READ: 2110e126ba97SEli Cohen case IB_WR_RDMA_WRITE: 2111e126ba97SEli Cohen case IB_WR_RDMA_WRITE_WITH_IMM: 2112e126ba97SEli Cohen set_raddr_seg(seg, wr->wr.rdma.remote_addr, 2113e126ba97SEli Cohen wr->wr.rdma.rkey); 2114e126ba97SEli Cohen seg += sizeof(struct mlx5_wqe_raddr_seg); 2115e126ba97SEli Cohen size += sizeof(struct mlx5_wqe_raddr_seg) / 16; 2116e126ba97SEli Cohen break; 2117e126ba97SEli Cohen 2118e126ba97SEli Cohen case IB_WR_ATOMIC_CMP_AND_SWP: 2119e126ba97SEli Cohen case IB_WR_ATOMIC_FETCH_AND_ADD: 2120e126ba97SEli Cohen case IB_WR_MASKED_ATOMIC_CMP_AND_SWP: 212181bea28fSEli Cohen mlx5_ib_warn(dev, "Atomic operations are not supported yet\n"); 212281bea28fSEli Cohen err = -ENOSYS; 212381bea28fSEli Cohen *bad_wr = wr; 212481bea28fSEli Cohen goto out; 2125e126ba97SEli Cohen 2126e126ba97SEli Cohen case IB_WR_LOCAL_INV: 2127e126ba97SEli Cohen next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL; 2128e126ba97SEli Cohen qp->sq.wr_data[idx] = IB_WR_LOCAL_INV; 2129e126ba97SEli Cohen ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey); 2130e126ba97SEli Cohen err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp); 2131e126ba97SEli Cohen if (err) { 2132e126ba97SEli Cohen mlx5_ib_warn(dev, "\n"); 2133e126ba97SEli Cohen *bad_wr = wr; 2134e126ba97SEli Cohen goto out; 2135e126ba97SEli Cohen } 2136e126ba97SEli Cohen num_sge = 0; 2137e126ba97SEli Cohen break; 2138e126ba97SEli Cohen 2139e126ba97SEli Cohen case IB_WR_FAST_REG_MR: 2140e126ba97SEli Cohen next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL; 2141e126ba97SEli Cohen qp->sq.wr_data[idx] = IB_WR_FAST_REG_MR; 2142e126ba97SEli Cohen ctrl->imm = cpu_to_be32(wr->wr.fast_reg.rkey); 2143e126ba97SEli Cohen err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp); 2144e126ba97SEli Cohen if (err) { 2145e126ba97SEli Cohen mlx5_ib_warn(dev, "\n"); 2146e126ba97SEli Cohen *bad_wr = wr; 2147e126ba97SEli Cohen goto out; 2148e126ba97SEli Cohen } 2149e126ba97SEli Cohen num_sge = 0; 2150e126ba97SEli Cohen break; 2151e126ba97SEli Cohen 2152e126ba97SEli Cohen default: 2153e126ba97SEli Cohen break; 2154e126ba97SEli Cohen } 2155e126ba97SEli Cohen break; 2156e126ba97SEli Cohen 2157e126ba97SEli Cohen case IB_QPT_UC: 2158e126ba97SEli Cohen switch (wr->opcode) { 2159e126ba97SEli Cohen case IB_WR_RDMA_WRITE: 2160e126ba97SEli Cohen case IB_WR_RDMA_WRITE_WITH_IMM: 2161e126ba97SEli Cohen set_raddr_seg(seg, wr->wr.rdma.remote_addr, 2162e126ba97SEli Cohen wr->wr.rdma.rkey); 2163e126ba97SEli Cohen seg += sizeof(struct mlx5_wqe_raddr_seg); 2164e126ba97SEli Cohen size += sizeof(struct mlx5_wqe_raddr_seg) / 16; 2165e126ba97SEli Cohen break; 2166e126ba97SEli Cohen 2167e126ba97SEli Cohen default: 2168e126ba97SEli Cohen break; 2169e126ba97SEli Cohen } 2170e126ba97SEli Cohen break; 2171e126ba97SEli Cohen 2172e126ba97SEli Cohen case IB_QPT_UD: 2173e126ba97SEli Cohen case IB_QPT_SMI: 2174e126ba97SEli Cohen case IB_QPT_GSI: 2175e126ba97SEli Cohen set_datagram_seg(seg, wr); 2176e126ba97SEli Cohen seg += sizeof(struct mlx5_wqe_datagram_seg); 2177e126ba97SEli Cohen size += sizeof(struct mlx5_wqe_datagram_seg) / 16; 2178e126ba97SEli Cohen if (unlikely((seg == qend))) 2179e126ba97SEli Cohen seg = mlx5_get_send_wqe(qp, 0); 2180e126ba97SEli Cohen break; 2181e126ba97SEli Cohen 2182e126ba97SEli Cohen case MLX5_IB_QPT_REG_UMR: 2183e126ba97SEli Cohen if (wr->opcode != MLX5_IB_WR_UMR) { 2184e126ba97SEli Cohen err = -EINVAL; 2185e126ba97SEli Cohen mlx5_ib_warn(dev, "bad opcode\n"); 2186e126ba97SEli Cohen goto out; 2187e126ba97SEli Cohen } 2188e126ba97SEli Cohen qp->sq.wr_data[idx] = MLX5_IB_WR_UMR; 2189e126ba97SEli Cohen ctrl->imm = cpu_to_be32(wr->wr.fast_reg.rkey); 2190e126ba97SEli Cohen set_reg_umr_segment(seg, wr); 2191e126ba97SEli Cohen seg += sizeof(struct mlx5_wqe_umr_ctrl_seg); 2192e126ba97SEli Cohen size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16; 2193e126ba97SEli Cohen if (unlikely((seg == qend))) 2194e126ba97SEli Cohen seg = mlx5_get_send_wqe(qp, 0); 2195e126ba97SEli Cohen set_reg_mkey_segment(seg, wr); 2196e126ba97SEli Cohen seg += sizeof(struct mlx5_mkey_seg); 2197e126ba97SEli Cohen size += sizeof(struct mlx5_mkey_seg) / 16; 2198e126ba97SEli Cohen if (unlikely((seg == qend))) 2199e126ba97SEli Cohen seg = mlx5_get_send_wqe(qp, 0); 2200e126ba97SEli Cohen break; 2201e126ba97SEli Cohen 2202e126ba97SEli Cohen default: 2203e126ba97SEli Cohen break; 2204e126ba97SEli Cohen } 2205e126ba97SEli Cohen 2206e126ba97SEli Cohen if (wr->send_flags & IB_SEND_INLINE && num_sge) { 2207e126ba97SEli Cohen int uninitialized_var(sz); 2208e126ba97SEli Cohen 2209e126ba97SEli Cohen err = set_data_inl_seg(qp, wr, seg, &sz); 2210e126ba97SEli Cohen if (unlikely(err)) { 2211e126ba97SEli Cohen mlx5_ib_warn(dev, "\n"); 2212e126ba97SEli Cohen *bad_wr = wr; 2213e126ba97SEli Cohen goto out; 2214e126ba97SEli Cohen } 2215e126ba97SEli Cohen inl = 1; 2216e126ba97SEli Cohen size += sz; 2217e126ba97SEli Cohen } else { 2218e126ba97SEli Cohen dpseg = seg; 2219e126ba97SEli Cohen for (i = 0; i < num_sge; i++) { 2220e126ba97SEli Cohen if (unlikely(dpseg == qend)) { 2221e126ba97SEli Cohen seg = mlx5_get_send_wqe(qp, 0); 2222e126ba97SEli Cohen dpseg = seg; 2223e126ba97SEli Cohen } 2224e126ba97SEli Cohen if (likely(wr->sg_list[i].length)) { 2225e126ba97SEli Cohen set_data_ptr_seg(dpseg, wr->sg_list + i); 2226e126ba97SEli Cohen size += sizeof(struct mlx5_wqe_data_seg) / 16; 2227e126ba97SEli Cohen dpseg++; 2228e126ba97SEli Cohen } 2229e126ba97SEli Cohen } 2230e126ba97SEli Cohen } 2231e126ba97SEli Cohen 2232e126ba97SEli Cohen mlx5_opcode = mlx5_ib_opcode[wr->opcode]; 2233e126ba97SEli Cohen ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) | 2234e126ba97SEli Cohen mlx5_opcode | 2235e126ba97SEli Cohen ((u32)opmod << 24)); 2236e126ba97SEli Cohen ctrl->qpn_ds = cpu_to_be32(size | (qp->mqp.qpn << 8)); 2237e126ba97SEli Cohen ctrl->fm_ce_se |= get_fence(fence, wr); 2238e126ba97SEli Cohen qp->fm_cache = next_fence; 2239e126ba97SEli Cohen if (unlikely(qp->wq_sig)) 2240e126ba97SEli Cohen ctrl->signature = wq_sig(ctrl); 2241e126ba97SEli Cohen 2242e126ba97SEli Cohen qp->sq.wrid[idx] = wr->wr_id; 2243e126ba97SEli Cohen qp->sq.w_list[idx].opcode = mlx5_opcode; 2244e126ba97SEli Cohen qp->sq.wqe_head[idx] = qp->sq.head + nreq; 2245e126ba97SEli Cohen qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB); 2246e126ba97SEli Cohen qp->sq.w_list[idx].next = qp->sq.cur_post; 2247e126ba97SEli Cohen 2248e126ba97SEli Cohen if (0) 2249e126ba97SEli Cohen dump_wqe(qp, idx, size); 2250e126ba97SEli Cohen } 2251e126ba97SEli Cohen 2252e126ba97SEli Cohen out: 2253e126ba97SEli Cohen if (likely(nreq)) { 2254e126ba97SEli Cohen qp->sq.head += nreq; 2255e126ba97SEli Cohen 2256e126ba97SEli Cohen /* Make sure that descriptors are written before 2257e126ba97SEli Cohen * updating doorbell record and ringing the doorbell 2258e126ba97SEli Cohen */ 2259e126ba97SEli Cohen wmb(); 2260e126ba97SEli Cohen 2261e126ba97SEli Cohen qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post); 2262e126ba97SEli Cohen 2263ada388f7SEli Cohen /* Make sure doorbell record is visible to the HCA before 2264ada388f7SEli Cohen * we hit doorbell */ 2265ada388f7SEli Cohen wmb(); 2266ada388f7SEli Cohen 2267e126ba97SEli Cohen if (bf->need_lock) 2268e126ba97SEli Cohen spin_lock(&bf->lock); 2269e126ba97SEli Cohen 2270e126ba97SEli Cohen /* TBD enable WC */ 2271e126ba97SEli Cohen if (0 && nreq == 1 && bf->uuarn && inl && size > 1 && size <= bf->buf_size / 16) { 2272e126ba97SEli Cohen mlx5_bf_copy(bf->reg + bf->offset, (u64 *)ctrl, ALIGN(size * 16, 64), qp); 2273e126ba97SEli Cohen /* wc_wmb(); */ 2274e126ba97SEli Cohen } else { 2275e126ba97SEli Cohen mlx5_write64((__be32 *)ctrl, bf->regreg + bf->offset, 2276e126ba97SEli Cohen MLX5_GET_DOORBELL_LOCK(&bf->lock32)); 2277e126ba97SEli Cohen /* Make sure doorbells don't leak out of SQ spinlock 2278e126ba97SEli Cohen * and reach the HCA out of order. 2279e126ba97SEli Cohen */ 2280e126ba97SEli Cohen mmiowb(); 2281e126ba97SEli Cohen } 2282e126ba97SEli Cohen bf->offset ^= bf->buf_size; 2283e126ba97SEli Cohen if (bf->need_lock) 2284e126ba97SEli Cohen spin_unlock(&bf->lock); 2285e126ba97SEli Cohen } 2286e126ba97SEli Cohen 2287e126ba97SEli Cohen spin_unlock_irqrestore(&qp->sq.lock, flags); 2288e126ba97SEli Cohen 2289e126ba97SEli Cohen return err; 2290e126ba97SEli Cohen } 2291e126ba97SEli Cohen 2292e126ba97SEli Cohen static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size) 2293e126ba97SEli Cohen { 2294e126ba97SEli Cohen sig->signature = calc_sig(sig, size); 2295e126ba97SEli Cohen } 2296e126ba97SEli Cohen 2297e126ba97SEli Cohen int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 2298e126ba97SEli Cohen struct ib_recv_wr **bad_wr) 2299e126ba97SEli Cohen { 2300e126ba97SEli Cohen struct mlx5_ib_qp *qp = to_mqp(ibqp); 2301e126ba97SEli Cohen struct mlx5_wqe_data_seg *scat; 2302e126ba97SEli Cohen struct mlx5_rwqe_sig *sig; 2303e126ba97SEli Cohen unsigned long flags; 2304e126ba97SEli Cohen int err = 0; 2305e126ba97SEli Cohen int nreq; 2306e126ba97SEli Cohen int ind; 2307e126ba97SEli Cohen int i; 2308e126ba97SEli Cohen 2309e126ba97SEli Cohen spin_lock_irqsave(&qp->rq.lock, flags); 2310e126ba97SEli Cohen 2311e126ba97SEli Cohen ind = qp->rq.head & (qp->rq.wqe_cnt - 1); 2312e126ba97SEli Cohen 2313e126ba97SEli Cohen for (nreq = 0; wr; nreq++, wr = wr->next) { 2314e126ba97SEli Cohen if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) { 2315e126ba97SEli Cohen err = -ENOMEM; 2316e126ba97SEli Cohen *bad_wr = wr; 2317e126ba97SEli Cohen goto out; 2318e126ba97SEli Cohen } 2319e126ba97SEli Cohen 2320e126ba97SEli Cohen if (unlikely(wr->num_sge > qp->rq.max_gs)) { 2321e126ba97SEli Cohen err = -EINVAL; 2322e126ba97SEli Cohen *bad_wr = wr; 2323e126ba97SEli Cohen goto out; 2324e126ba97SEli Cohen } 2325e126ba97SEli Cohen 2326e126ba97SEli Cohen scat = get_recv_wqe(qp, ind); 2327e126ba97SEli Cohen if (qp->wq_sig) 2328e126ba97SEli Cohen scat++; 2329e126ba97SEli Cohen 2330e126ba97SEli Cohen for (i = 0; i < wr->num_sge; i++) 2331e126ba97SEli Cohen set_data_ptr_seg(scat + i, wr->sg_list + i); 2332e126ba97SEli Cohen 2333e126ba97SEli Cohen if (i < qp->rq.max_gs) { 2334e126ba97SEli Cohen scat[i].byte_count = 0; 2335e126ba97SEli Cohen scat[i].lkey = cpu_to_be32(MLX5_INVALID_LKEY); 2336e126ba97SEli Cohen scat[i].addr = 0; 2337e126ba97SEli Cohen } 2338e126ba97SEli Cohen 2339e126ba97SEli Cohen if (qp->wq_sig) { 2340e126ba97SEli Cohen sig = (struct mlx5_rwqe_sig *)scat; 2341e126ba97SEli Cohen set_sig_seg(sig, (qp->rq.max_gs + 1) << 2); 2342e126ba97SEli Cohen } 2343e126ba97SEli Cohen 2344e126ba97SEli Cohen qp->rq.wrid[ind] = wr->wr_id; 2345e126ba97SEli Cohen 2346e126ba97SEli Cohen ind = (ind + 1) & (qp->rq.wqe_cnt - 1); 2347e126ba97SEli Cohen } 2348e126ba97SEli Cohen 2349e126ba97SEli Cohen out: 2350e126ba97SEli Cohen if (likely(nreq)) { 2351e126ba97SEli Cohen qp->rq.head += nreq; 2352e126ba97SEli Cohen 2353e126ba97SEli Cohen /* Make sure that descriptors are written before 2354e126ba97SEli Cohen * doorbell record. 2355e126ba97SEli Cohen */ 2356e126ba97SEli Cohen wmb(); 2357e126ba97SEli Cohen 2358e126ba97SEli Cohen *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff); 2359e126ba97SEli Cohen } 2360e126ba97SEli Cohen 2361e126ba97SEli Cohen spin_unlock_irqrestore(&qp->rq.lock, flags); 2362e126ba97SEli Cohen 2363e126ba97SEli Cohen return err; 2364e126ba97SEli Cohen } 2365e126ba97SEli Cohen 2366e126ba97SEli Cohen static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state) 2367e126ba97SEli Cohen { 2368e126ba97SEli Cohen switch (mlx5_state) { 2369e126ba97SEli Cohen case MLX5_QP_STATE_RST: return IB_QPS_RESET; 2370e126ba97SEli Cohen case MLX5_QP_STATE_INIT: return IB_QPS_INIT; 2371e126ba97SEli Cohen case MLX5_QP_STATE_RTR: return IB_QPS_RTR; 2372e126ba97SEli Cohen case MLX5_QP_STATE_RTS: return IB_QPS_RTS; 2373e126ba97SEli Cohen case MLX5_QP_STATE_SQ_DRAINING: 2374e126ba97SEli Cohen case MLX5_QP_STATE_SQD: return IB_QPS_SQD; 2375e126ba97SEli Cohen case MLX5_QP_STATE_SQER: return IB_QPS_SQE; 2376e126ba97SEli Cohen case MLX5_QP_STATE_ERR: return IB_QPS_ERR; 2377e126ba97SEli Cohen default: return -1; 2378e126ba97SEli Cohen } 2379e126ba97SEli Cohen } 2380e126ba97SEli Cohen 2381e126ba97SEli Cohen static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state) 2382e126ba97SEli Cohen { 2383e126ba97SEli Cohen switch (mlx5_mig_state) { 2384e126ba97SEli Cohen case MLX5_QP_PM_ARMED: return IB_MIG_ARMED; 2385e126ba97SEli Cohen case MLX5_QP_PM_REARM: return IB_MIG_REARM; 2386e126ba97SEli Cohen case MLX5_QP_PM_MIGRATED: return IB_MIG_MIGRATED; 2387e126ba97SEli Cohen default: return -1; 2388e126ba97SEli Cohen } 2389e126ba97SEli Cohen } 2390e126ba97SEli Cohen 2391e126ba97SEli Cohen static int to_ib_qp_access_flags(int mlx5_flags) 2392e126ba97SEli Cohen { 2393e126ba97SEli Cohen int ib_flags = 0; 2394e126ba97SEli Cohen 2395e126ba97SEli Cohen if (mlx5_flags & MLX5_QP_BIT_RRE) 2396e126ba97SEli Cohen ib_flags |= IB_ACCESS_REMOTE_READ; 2397e126ba97SEli Cohen if (mlx5_flags & MLX5_QP_BIT_RWE) 2398e126ba97SEli Cohen ib_flags |= IB_ACCESS_REMOTE_WRITE; 2399e126ba97SEli Cohen if (mlx5_flags & MLX5_QP_BIT_RAE) 2400e126ba97SEli Cohen ib_flags |= IB_ACCESS_REMOTE_ATOMIC; 2401e126ba97SEli Cohen 2402e126ba97SEli Cohen return ib_flags; 2403e126ba97SEli Cohen } 2404e126ba97SEli Cohen 2405e126ba97SEli Cohen static void to_ib_ah_attr(struct mlx5_ib_dev *ibdev, struct ib_ah_attr *ib_ah_attr, 2406e126ba97SEli Cohen struct mlx5_qp_path *path) 2407e126ba97SEli Cohen { 2408e126ba97SEli Cohen struct mlx5_core_dev *dev = &ibdev->mdev; 2409e126ba97SEli Cohen 2410e126ba97SEli Cohen memset(ib_ah_attr, 0, sizeof(*ib_ah_attr)); 2411e126ba97SEli Cohen ib_ah_attr->port_num = path->port; 2412e126ba97SEli Cohen 2413e126ba97SEli Cohen if (ib_ah_attr->port_num == 0 || ib_ah_attr->port_num > dev->caps.num_ports) 2414e126ba97SEli Cohen return; 2415e126ba97SEli Cohen 2416e126ba97SEli Cohen ib_ah_attr->sl = path->sl & 0xf; 2417e126ba97SEli Cohen 2418e126ba97SEli Cohen ib_ah_attr->dlid = be16_to_cpu(path->rlid); 2419e126ba97SEli Cohen ib_ah_attr->src_path_bits = path->grh_mlid & 0x7f; 2420e126ba97SEli Cohen ib_ah_attr->static_rate = path->static_rate ? path->static_rate - 5 : 0; 2421e126ba97SEli Cohen ib_ah_attr->ah_flags = (path->grh_mlid & (1 << 7)) ? IB_AH_GRH : 0; 2422e126ba97SEli Cohen if (ib_ah_attr->ah_flags) { 2423e126ba97SEli Cohen ib_ah_attr->grh.sgid_index = path->mgid_index; 2424e126ba97SEli Cohen ib_ah_attr->grh.hop_limit = path->hop_limit; 2425e126ba97SEli Cohen ib_ah_attr->grh.traffic_class = 2426e126ba97SEli Cohen (be32_to_cpu(path->tclass_flowlabel) >> 20) & 0xff; 2427e126ba97SEli Cohen ib_ah_attr->grh.flow_label = 2428e126ba97SEli Cohen be32_to_cpu(path->tclass_flowlabel) & 0xfffff; 2429e126ba97SEli Cohen memcpy(ib_ah_attr->grh.dgid.raw, 2430e126ba97SEli Cohen path->rgid, sizeof(ib_ah_attr->grh.dgid.raw)); 2431e126ba97SEli Cohen } 2432e126ba97SEli Cohen } 2433e126ba97SEli Cohen 2434e126ba97SEli Cohen int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, 2435e126ba97SEli Cohen struct ib_qp_init_attr *qp_init_attr) 2436e126ba97SEli Cohen { 2437e126ba97SEli Cohen struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 2438e126ba97SEli Cohen struct mlx5_ib_qp *qp = to_mqp(ibqp); 2439e126ba97SEli Cohen struct mlx5_query_qp_mbox_out *outb; 2440e126ba97SEli Cohen struct mlx5_qp_context *context; 2441e126ba97SEli Cohen int mlx5_state; 2442e126ba97SEli Cohen int err = 0; 2443e126ba97SEli Cohen 2444e126ba97SEli Cohen mutex_lock(&qp->mutex); 2445e126ba97SEli Cohen outb = kzalloc(sizeof(*outb), GFP_KERNEL); 2446e126ba97SEli Cohen if (!outb) { 2447e126ba97SEli Cohen err = -ENOMEM; 2448e126ba97SEli Cohen goto out; 2449e126ba97SEli Cohen } 2450e126ba97SEli Cohen context = &outb->ctx; 2451e126ba97SEli Cohen err = mlx5_core_qp_query(&dev->mdev, &qp->mqp, outb, sizeof(*outb)); 2452e126ba97SEli Cohen if (err) 2453e126ba97SEli Cohen goto out_free; 2454e126ba97SEli Cohen 2455e126ba97SEli Cohen mlx5_state = be32_to_cpu(context->flags) >> 28; 2456e126ba97SEli Cohen 2457e126ba97SEli Cohen qp->state = to_ib_qp_state(mlx5_state); 2458e126ba97SEli Cohen qp_attr->qp_state = qp->state; 2459e126ba97SEli Cohen qp_attr->path_mtu = context->mtu_msgmax >> 5; 2460e126ba97SEli Cohen qp_attr->path_mig_state = 2461e126ba97SEli Cohen to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3); 2462e126ba97SEli Cohen qp_attr->qkey = be32_to_cpu(context->qkey); 2463e126ba97SEli Cohen qp_attr->rq_psn = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff; 2464e126ba97SEli Cohen qp_attr->sq_psn = be32_to_cpu(context->next_send_psn) & 0xffffff; 2465e126ba97SEli Cohen qp_attr->dest_qp_num = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff; 2466e126ba97SEli Cohen qp_attr->qp_access_flags = 2467e126ba97SEli Cohen to_ib_qp_access_flags(be32_to_cpu(context->params2)); 2468e126ba97SEli Cohen 2469e126ba97SEli Cohen if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) { 2470e126ba97SEli Cohen to_ib_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path); 2471e126ba97SEli Cohen to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path); 2472e126ba97SEli Cohen qp_attr->alt_pkey_index = context->alt_path.pkey_index & 0x7f; 2473e126ba97SEli Cohen qp_attr->alt_port_num = qp_attr->alt_ah_attr.port_num; 2474e126ba97SEli Cohen } 2475e126ba97SEli Cohen 2476e126ba97SEli Cohen qp_attr->pkey_index = context->pri_path.pkey_index & 0x7f; 2477e126ba97SEli Cohen qp_attr->port_num = context->pri_path.port; 2478e126ba97SEli Cohen 2479e126ba97SEli Cohen /* qp_attr->en_sqd_async_notify is only applicable in modify qp */ 2480e126ba97SEli Cohen qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING; 2481e126ba97SEli Cohen 2482e126ba97SEli Cohen qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7); 2483e126ba97SEli Cohen 2484e126ba97SEli Cohen qp_attr->max_dest_rd_atomic = 2485e126ba97SEli Cohen 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7); 2486e126ba97SEli Cohen qp_attr->min_rnr_timer = 2487e126ba97SEli Cohen (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f; 2488e126ba97SEli Cohen qp_attr->timeout = context->pri_path.ackto_lt >> 3; 2489e126ba97SEli Cohen qp_attr->retry_cnt = (be32_to_cpu(context->params1) >> 16) & 0x7; 2490e126ba97SEli Cohen qp_attr->rnr_retry = (be32_to_cpu(context->params1) >> 13) & 0x7; 2491e126ba97SEli Cohen qp_attr->alt_timeout = context->alt_path.ackto_lt >> 3; 2492e126ba97SEli Cohen qp_attr->cur_qp_state = qp_attr->qp_state; 2493e126ba97SEli Cohen qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt; 2494e126ba97SEli Cohen qp_attr->cap.max_recv_sge = qp->rq.max_gs; 2495e126ba97SEli Cohen 2496e126ba97SEli Cohen if (!ibqp->uobject) { 2497e126ba97SEli Cohen qp_attr->cap.max_send_wr = qp->sq.wqe_cnt; 2498e126ba97SEli Cohen qp_attr->cap.max_send_sge = qp->sq.max_gs; 2499e126ba97SEli Cohen } else { 2500e126ba97SEli Cohen qp_attr->cap.max_send_wr = 0; 2501e126ba97SEli Cohen qp_attr->cap.max_send_sge = 0; 2502e126ba97SEli Cohen } 2503e126ba97SEli Cohen 2504e126ba97SEli Cohen /* We don't support inline sends for kernel QPs (yet), and we 2505e126ba97SEli Cohen * don't know what userspace's value should be. 2506e126ba97SEli Cohen */ 2507e126ba97SEli Cohen qp_attr->cap.max_inline_data = 0; 2508e126ba97SEli Cohen 2509e126ba97SEli Cohen qp_init_attr->cap = qp_attr->cap; 2510e126ba97SEli Cohen 2511e126ba97SEli Cohen qp_init_attr->create_flags = 0; 2512e126ba97SEli Cohen if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK) 2513e126ba97SEli Cohen qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; 2514e126ba97SEli Cohen 2515e126ba97SEli Cohen qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ? 2516e126ba97SEli Cohen IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; 2517e126ba97SEli Cohen 2518e126ba97SEli Cohen out_free: 2519e126ba97SEli Cohen kfree(outb); 2520e126ba97SEli Cohen 2521e126ba97SEli Cohen out: 2522e126ba97SEli Cohen mutex_unlock(&qp->mutex); 2523e126ba97SEli Cohen return err; 2524e126ba97SEli Cohen } 2525e126ba97SEli Cohen 2526e126ba97SEli Cohen struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev, 2527e126ba97SEli Cohen struct ib_ucontext *context, 2528e126ba97SEli Cohen struct ib_udata *udata) 2529e126ba97SEli Cohen { 2530e126ba97SEli Cohen struct mlx5_ib_dev *dev = to_mdev(ibdev); 2531e126ba97SEli Cohen struct mlx5_ib_xrcd *xrcd; 2532e126ba97SEli Cohen int err; 2533e126ba97SEli Cohen 2534e126ba97SEli Cohen if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_XRC)) 2535e126ba97SEli Cohen return ERR_PTR(-ENOSYS); 2536e126ba97SEli Cohen 2537e126ba97SEli Cohen xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL); 2538e126ba97SEli Cohen if (!xrcd) 2539e126ba97SEli Cohen return ERR_PTR(-ENOMEM); 2540e126ba97SEli Cohen 2541e126ba97SEli Cohen err = mlx5_core_xrcd_alloc(&dev->mdev, &xrcd->xrcdn); 2542e126ba97SEli Cohen if (err) { 2543e126ba97SEli Cohen kfree(xrcd); 2544e126ba97SEli Cohen return ERR_PTR(-ENOMEM); 2545e126ba97SEli Cohen } 2546e126ba97SEli Cohen 2547e126ba97SEli Cohen return &xrcd->ibxrcd; 2548e126ba97SEli Cohen } 2549e126ba97SEli Cohen 2550e126ba97SEli Cohen int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 2551e126ba97SEli Cohen { 2552e126ba97SEli Cohen struct mlx5_ib_dev *dev = to_mdev(xrcd->device); 2553e126ba97SEli Cohen u32 xrcdn = to_mxrcd(xrcd)->xrcdn; 2554e126ba97SEli Cohen int err; 2555e126ba97SEli Cohen 2556e126ba97SEli Cohen err = mlx5_core_xrcd_dealloc(&dev->mdev, xrcdn); 2557e126ba97SEli Cohen if (err) { 2558e126ba97SEli Cohen mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn); 2559e126ba97SEli Cohen return err; 2560e126ba97SEli Cohen } 2561e126ba97SEli Cohen 2562e126ba97SEli Cohen kfree(xrcd); 2563e126ba97SEli Cohen 2564e126ba97SEli Cohen return 0; 2565e126ba97SEli Cohen } 2566