| /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ |
| /* Copyright (c) 2018 Mellanox Technologies. */ |
| |
| #ifndef MLX5_CORE_EQ_H |
| #define MLX5_CORE_EQ_H |
| |
| enum { |
| MLX5_EQ_PAGEREQ_IDX = 0, |
| MLX5_EQ_CMD_IDX = 1, |
| MLX5_EQ_ASYNC_IDX = 2, |
| /* reserved to be used by mlx5_core ulps (mlx5e/mlx5_ib) */ |
| MLX5_EQ_PFAULT_IDX = 3, |
| MLX5_EQ_MAX_ASYNC_EQS, |
| /* completion eqs vector indices start here */ |
| MLX5_EQ_VEC_COMP_BASE = MLX5_EQ_MAX_ASYNC_EQS, |
| }; |
| |
| #define MLX5_NUM_CMD_EQE (32) |
| #define MLX5_NUM_ASYNC_EQE (0x1000) |
| #define MLX5_NUM_SPARE_EQE (0x80) |
| |
| struct mlx5_eq; |
| struct mlx5_core_dev; |
| |
| struct mlx5_eq_param { |
| u8 index; |
| int nent; |
| u64 mask; |
| void *context; |
| irq_handler_t handler; |
| }; |
| |
| struct mlx5_eq * |
| mlx5_eq_create_generic(struct mlx5_core_dev *dev, const char *name, |
| struct mlx5_eq_param *param); |
| int |
| mlx5_eq_destroy_generic(struct mlx5_core_dev *dev, struct mlx5_eq *eq); |
| |
| struct mlx5_eqe *mlx5_eq_get_eqe(struct mlx5_eq *eq, u32 cc); |
| void mlx5_eq_update_ci(struct mlx5_eq *eq, u32 cc, bool arm); |
| |
| /* The HCA will think the queue has overflowed if we |
| * don't tell it we've been processing events. We |
| * create EQs with MLX5_NUM_SPARE_EQE extra entries, |
| * so we must update our consumer index at |
| * least that often. |
| * |
| * mlx5_eq_update_cc must be called on every EQE @EQ irq handler |
| */ |
| static inline u32 mlx5_eq_update_cc(struct mlx5_eq *eq, u32 cc) |
| { |
| if (unlikely(cc >= MLX5_NUM_SPARE_EQE)) { |
| mlx5_eq_update_ci(eq, cc, 0); |
| cc = 0; |
| } |
| return cc; |
| } |
| |
| struct mlx5_nb { |
| struct notifier_block nb; |
| u8 event_type; |
| }; |
| |
| #define mlx5_nb_cof(ptr, type, member) \ |
| (container_of(container_of(ptr, struct mlx5_nb, nb), type, member)) |
| |
| #define MLX5_NB_INIT(name, handler, event) do { \ |
| (name)->nb.notifier_call = handler; \ |
| (name)->event_type = MLX5_EVENT_TYPE_##event; \ |
| } while (0) |
| |
| #endif /* MLX5_CORE_EQ_H */ |