1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* 3 * Copyright (c) 2013-2018, Mellanox Technologies. All rights reserved. 4 */ 5 6 #ifndef MLX5_IB_SRQ_H 7 #define MLX5_IB_SRQ_H 8 9 enum { 10 MLX5_SRQ_FLAG_ERR = (1 << 0), 11 MLX5_SRQ_FLAG_WQ_SIG = (1 << 1), 12 MLX5_SRQ_FLAG_RNDV = (1 << 2), 13 }; 14 15 struct mlx5_srq_attr { 16 u32 type; 17 u32 flags; 18 u32 log_size; 19 u32 wqe_shift; 20 u32 log_page_size; 21 u32 wqe_cnt; 22 u32 srqn; 23 u32 xrcd; 24 u32 page_offset; 25 u32 cqn; 26 u32 pd; 27 u32 lwm; 28 u32 user_index; 29 u64 db_record; 30 __be64 *pas; 31 u32 tm_log_list_size; 32 u32 tm_next_tag; 33 u32 tm_hw_phase_cnt; 34 u32 tm_sw_phase_cnt; 35 u16 uid; 36 }; 37 38 struct mlx5_ib_dev; 39 40 struct mlx5_core_srq { 41 struct mlx5_core_rsc_common common; /* must be first */ 42 u32 srqn; 43 int max; 44 size_t max_gs; 45 size_t max_avail_gather; 46 int wqe_shift; 47 void (*event)(struct mlx5_core_srq *srq, enum mlx5_event e); 48 49 atomic_t refcount; 50 struct completion free; 51 u16 uid; 52 }; 53 54 struct mlx5_srq_table { 55 struct notifier_block nb; 56 /* protect radix tree 57 */ 58 spinlock_t lock; 59 struct radix_tree_root tree; 60 }; 61 62 int mlx5_cmd_create_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq, 63 struct mlx5_srq_attr *in); 64 int mlx5_cmd_destroy_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq); 65 int mlx5_cmd_query_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq, 66 struct mlx5_srq_attr *out); 67 int mlx5_cmd_arm_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq, 68 u16 lwm, int is_srq); 69 struct mlx5_core_srq *mlx5_cmd_get_srq(struct mlx5_ib_dev *dev, u32 srqn); 70 71 int mlx5_init_srq_table(struct mlx5_ib_dev *dev); 72 void mlx5_cleanup_srq_table(struct mlx5_ib_dev *dev); 73 #endif /* MLX5_IB_SRQ_H */ 74