drivers/infiniband/hw/mlx5/srq.h

   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         u16 uid;
  50 };
  51
  52 struct mlx5_srq_table {
  53         struct notifier_block nb;
  54         /* protect radix tree
  55          */
  56         spinlock_t lock;
  57         struct radix_tree_root tree;
  58 };
  59
  60 int mlx5_cmd_create_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
  61                         struct mlx5_srq_attr *in);
  62 int mlx5_cmd_destroy_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq);
  63 int mlx5_cmd_query_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
  64                        struct mlx5_srq_attr *out);
  65 int mlx5_cmd_arm_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
  66                      u16 lwm, int is_srq);
  67 struct mlx5_core_srq *mlx5_cmd_get_srq(struct mlx5_ib_dev *dev, u32 srqn);
  68
  69 int mlx5_init_srq_table(struct mlx5_ib_dev *dev);
  70 void mlx5_cleanup_srq_table(struct mlx5_ib_dev *dev);
  71 #endif /* MLX5_IB_SRQ_H */