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 	struct ib_umem *umem;
32 	u32 tm_log_list_size;
33 	u32 tm_next_tag;
34 	u32 tm_hw_phase_cnt;
35 	u32 tm_sw_phase_cnt;
36 	u16 uid;
37 };
38 
39 struct mlx5_ib_dev;
40 
41 struct mlx5_core_srq {
42 	struct mlx5_core_rsc_common common; /* must be first */
43 	u32 srqn;
44 	int max;
45 	size_t max_gs;
46 	size_t max_avail_gather;
47 	int wqe_shift;
48 	void (*event)(struct mlx5_core_srq *srq, enum mlx5_event e);
49 
50 	u16 uid;
51 };
52 
53 struct mlx5_srq_table {
54 	struct notifier_block nb;
55 	struct xarray array;
56 };
57 
58 int mlx5_cmd_create_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
59 			struct mlx5_srq_attr *in);
60 int mlx5_cmd_destroy_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq);
61 int mlx5_cmd_query_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
62 		       struct mlx5_srq_attr *out);
63 int mlx5_cmd_arm_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
64 		     u16 lwm, int is_srq);
65 struct mlx5_core_srq *mlx5_cmd_get_srq(struct mlx5_ib_dev *dev, u32 srqn);
66 
67 int mlx5_init_srq_table(struct mlx5_ib_dev *dev);
68 void mlx5_cleanup_srq_table(struct mlx5_ib_dev *dev);
69 #endif /* MLX5_IB_SRQ_H */
70