1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2021 Mellanox Technologies. */
3 
4 #ifndef __MLX5_IRQ_H__
5 #define __MLX5_IRQ_H__
6 
7 #include <linux/mlx5/driver.h>
8 
9 #define MLX5_COMP_EQS_PER_SF 8
10 
11 struct mlx5_irq;
12 
13 int mlx5_irq_table_init(struct mlx5_core_dev *dev);
14 void mlx5_irq_table_cleanup(struct mlx5_core_dev *dev);
15 int mlx5_irq_table_create(struct mlx5_core_dev *dev);
16 void mlx5_irq_table_destroy(struct mlx5_core_dev *dev);
17 int mlx5_irq_table_get_num_comp(struct mlx5_irq_table *table);
18 int mlx5_irq_table_get_sfs_vec(struct mlx5_irq_table *table);
19 struct mlx5_irq_table *mlx5_irq_table_get(struct mlx5_core_dev *dev);
20 
21 int mlx5_set_msix_vec_count(struct mlx5_core_dev *dev, int devfn,
22 			    int msix_vec_count);
23 int mlx5_get_default_msix_vec_count(struct mlx5_core_dev *dev, int num_vfs);
24 
25 struct mlx5_irq *mlx5_ctrl_irq_request(struct mlx5_core_dev *dev);
26 void mlx5_ctrl_irq_release(struct mlx5_irq *ctrl_irq);
27 struct mlx5_irq *mlx5_irq_request(struct mlx5_core_dev *dev, u16 vecidx,
28 				  struct cpumask *affinity);
29 int mlx5_irqs_request_vectors(struct mlx5_core_dev *dev, u16 *cpus, int nirqs,
30 			      struct mlx5_irq **irqs);
31 void mlx5_irqs_release_vectors(struct mlx5_irq **irqs, int nirqs);
32 int mlx5_irq_attach_nb(struct mlx5_irq *irq, struct notifier_block *nb);
33 int mlx5_irq_detach_nb(struct mlx5_irq *irq, struct notifier_block *nb);
34 struct cpumask *mlx5_irq_get_affinity_mask(struct mlx5_irq *irq);
35 int mlx5_irq_get_index(struct mlx5_irq *irq);
36 
37 struct mlx5_irq_pool;
38 #ifdef CONFIG_MLX5_SF
39 int mlx5_irq_affinity_irqs_request_auto(struct mlx5_core_dev *dev, int nirqs,
40 					struct mlx5_irq **irqs);
41 struct mlx5_irq *mlx5_irq_affinity_request(struct mlx5_irq_pool *pool,
42 					   const struct cpumask *req_mask);
43 void mlx5_irq_affinity_irqs_release(struct mlx5_core_dev *dev, struct mlx5_irq **irqs,
44 				    int num_irqs);
45 #else
mlx5_irq_affinity_irqs_request_auto(struct mlx5_core_dev * dev,int nirqs,struct mlx5_irq ** irqs)46 static inline int mlx5_irq_affinity_irqs_request_auto(struct mlx5_core_dev *dev, int nirqs,
47 						      struct mlx5_irq **irqs)
48 {
49 	return -EOPNOTSUPP;
50 }
51 
52 static inline struct mlx5_irq *
mlx5_irq_affinity_request(struct mlx5_irq_pool * pool,const struct cpumask * req_mask)53 mlx5_irq_affinity_request(struct mlx5_irq_pool *pool, const struct cpumask *req_mask)
54 {
55 	return ERR_PTR(-EOPNOTSUPP);
56 }
57 
mlx5_irq_affinity_irqs_release(struct mlx5_core_dev * dev,struct mlx5_irq ** irqs,int num_irqs)58 static inline void mlx5_irq_affinity_irqs_release(struct mlx5_core_dev *dev,
59 						  struct mlx5_irq **irqs, int num_irqs) {}
60 #endif
61 #endif /* __MLX5_IRQ_H__ */
62