1 /* 2 * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #ifndef MLX5_CORE_CQ_H 34 #define MLX5_CORE_CQ_H 35 36 #include <rdma/ib_verbs.h> 37 #include <linux/mlx5/driver.h> 38 39 40 struct mlx5_core_cq { 41 u32 cqn; 42 int cqe_sz; 43 __be32 *set_ci_db; 44 __be32 *arm_db; 45 atomic_t refcount; 46 struct completion free; 47 unsigned vector; 48 int irqn; 49 void (*comp) (struct mlx5_core_cq *); 50 void (*event) (struct mlx5_core_cq *, enum mlx5_event); 51 struct mlx5_uar *uar; 52 u32 cons_index; 53 unsigned arm_sn; 54 struct mlx5_rsc_debug *dbg; 55 int pid; 56 }; 57 58 59 enum { 60 MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01, 61 MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02, 62 MLX5_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04, 63 MLX5_CQE_SYNDROME_WR_FLUSH_ERR = 0x05, 64 MLX5_CQE_SYNDROME_MW_BIND_ERR = 0x06, 65 MLX5_CQE_SYNDROME_BAD_RESP_ERR = 0x10, 66 MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11, 67 MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12, 68 MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13, 69 MLX5_CQE_SYNDROME_REMOTE_OP_ERR = 0x14, 70 MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15, 71 MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16, 72 MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22, 73 }; 74 75 enum { 76 MLX5_CQE_OWNER_MASK = 1, 77 MLX5_CQE_REQ = 0, 78 MLX5_CQE_RESP_WR_IMM = 1, 79 MLX5_CQE_RESP_SEND = 2, 80 MLX5_CQE_RESP_SEND_IMM = 3, 81 MLX5_CQE_RESP_SEND_INV = 4, 82 MLX5_CQE_RESIZE_CQ = 0xff, /* TBD */ 83 MLX5_CQE_REQ_ERR = 13, 84 MLX5_CQE_RESP_ERR = 14, 85 }; 86 87 enum { 88 MLX5_CQ_MODIFY_RESEIZE = 0, 89 MLX5_CQ_MODIFY_MODER = 1, 90 MLX5_CQ_MODIFY_MAPPING = 2, 91 }; 92 93 struct mlx5_cq_modify_params { 94 int type; 95 union { 96 struct { 97 u32 page_offset; 98 u8 log_cq_size; 99 } resize; 100 101 struct { 102 } moder; 103 104 struct { 105 } mapping; 106 } params; 107 }; 108 109 enum { 110 CQE_SIZE_64 = 0, 111 CQE_SIZE_128 = 1, 112 }; 113 114 static inline int cqe_sz_to_mlx_sz(u8 size) 115 { 116 return size == 64 ? CQE_SIZE_64 : CQE_SIZE_128; 117 } 118 119 static inline void mlx5_cq_set_ci(struct mlx5_core_cq *cq) 120 { 121 *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff); 122 } 123 124 enum { 125 MLX5_CQ_DB_REQ_NOT_SOL = 1 << 24, 126 MLX5_CQ_DB_REQ_NOT = 0 << 24 127 }; 128 129 static inline void mlx5_cq_arm(struct mlx5_core_cq *cq, u32 cmd, 130 void __iomem *uar_page, 131 spinlock_t *doorbell_lock) 132 { 133 __be32 doorbell[2]; 134 u32 sn; 135 u32 ci; 136 137 sn = cq->arm_sn & 3; 138 ci = cq->cons_index & 0xffffff; 139 140 *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci); 141 142 /* Make sure that the doorbell record in host memory is 143 * written before ringing the doorbell via PCI MMIO. 144 */ 145 wmb(); 146 147 doorbell[0] = cpu_to_be32(sn << 28 | cmd | ci); 148 doorbell[1] = cpu_to_be32(cq->cqn); 149 150 mlx5_write64(doorbell, uar_page + MLX5_CQ_DOORBELL, doorbell_lock); 151 } 152 153 int mlx5_init_cq_table(struct mlx5_core_dev *dev); 154 void mlx5_cleanup_cq_table(struct mlx5_core_dev *dev); 155 int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, 156 struct mlx5_create_cq_mbox_in *in, int inlen); 157 int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq); 158 int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, 159 struct mlx5_query_cq_mbox_out *out); 160 int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, 161 int type, struct mlx5_cq_modify_params *params); 162 int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq); 163 void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq); 164 165 #endif /* MLX5_CORE_CQ_H */ 166