eq.h (1761B)
1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2/* Copyright (c) 2018 Mellanox Technologies. */ 3 4#ifndef MLX5_CORE_EQ_H 5#define MLX5_CORE_EQ_H 6 7#define MLX5_NUM_CMD_EQE (32) 8#define MLX5_NUM_ASYNC_EQE (0x1000) 9#define MLX5_NUM_SPARE_EQE (0x80) 10 11struct mlx5_eq; 12struct mlx5_irq; 13struct mlx5_core_dev; 14 15struct mlx5_eq_param { 16 int nent; 17 u64 mask[4]; 18 struct mlx5_irq *irq; 19}; 20 21struct mlx5_eq * 22mlx5_eq_create_generic(struct mlx5_core_dev *dev, struct mlx5_eq_param *param); 23int 24mlx5_eq_destroy_generic(struct mlx5_core_dev *dev, struct mlx5_eq *eq); 25int mlx5_eq_enable(struct mlx5_core_dev *dev, struct mlx5_eq *eq, 26 struct notifier_block *nb); 27void mlx5_eq_disable(struct mlx5_core_dev *dev, struct mlx5_eq *eq, 28 struct notifier_block *nb); 29 30struct mlx5_eqe *mlx5_eq_get_eqe(struct mlx5_eq *eq, u32 cc); 31void mlx5_eq_update_ci(struct mlx5_eq *eq, u32 cc, bool arm); 32 33/* The HCA will think the queue has overflowed if we 34 * don't tell it we've been processing events. We 35 * create EQs with MLX5_NUM_SPARE_EQE extra entries, 36 * so we must update our consumer index at 37 * least that often. 38 * 39 * mlx5_eq_update_cc must be called on every EQE @EQ irq handler 40 */ 41static inline u32 mlx5_eq_update_cc(struct mlx5_eq *eq, u32 cc) 42{ 43 if (unlikely(cc >= MLX5_NUM_SPARE_EQE)) { 44 mlx5_eq_update_ci(eq, cc, 0); 45 cc = 0; 46 } 47 return cc; 48} 49 50struct mlx5_nb { 51 struct notifier_block nb; 52 u8 event_type; 53}; 54 55#define mlx5_nb_cof(ptr, type, member) \ 56 (container_of(container_of(ptr, struct mlx5_nb, nb), type, member)) 57 58#define MLX5_NB_INIT(name, handler, event) do { \ 59 (name)->nb.notifier_call = handler; \ 60 (name)->event_type = MLX5_EVENT_TYPE_##event; \ 61} while (0) 62 63#endif /* MLX5_CORE_EQ_H */