devcom.h

 1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
 2/* Copyright (c) 2018 Mellanox Technologies */
 3
 4#ifndef __LIB_MLX5_DEVCOM_H__
 5#define __LIB_MLX5_DEVCOM_H__
 6
 7#include <linux/mlx5/driver.h>
 8
 9enum mlx5_devom_match_flags {
10	MLX5_DEVCOM_MATCH_FLAGS_NS = BIT(0),
11};
12
13#define MLX5_DEVCOM_MATCH_KEY_MAX 32
14union mlx5_devcom_match_key {
15	u64 val;
16	u8 buf[MLX5_DEVCOM_MATCH_KEY_MAX];
17};
18
19struct mlx5_devcom_match_attr {
20	u32 flags;
21	union mlx5_devcom_match_key key;
22	struct net *net;
23};
24
25enum mlx5_devcom_component {
26	MLX5_DEVCOM_ESW_OFFLOADS,
27	MLX5_DEVCOM_MPV,
28	MLX5_DEVCOM_HCA_PORTS,
29	MLX5_DEVCOM_SD_GROUP,
30	MLX5_DEVCOM_SHARED_CLOCK,
31	MLX5_DEVCOM_NUM_COMPONENTS,
32};
33
34typedef int (*mlx5_devcom_event_handler_t)(int event,
35					   void *my_data,
36					   void *event_data);
37
38struct mlx5_devcom_dev *mlx5_devcom_register_device(struct mlx5_core_dev *dev);
39void mlx5_devcom_unregister_device(struct mlx5_devcom_dev *devc);
40
41struct mlx5_devcom_comp_dev *
42mlx5_devcom_register_component(struct mlx5_devcom_dev *devc,
43			       enum mlx5_devcom_component id,
44			       const struct mlx5_devcom_match_attr *attr,
45			       mlx5_devcom_event_handler_t handler,
46			       void *data);
47void mlx5_devcom_unregister_component(struct mlx5_devcom_comp_dev *devcom);
48
49int mlx5_devcom_send_event(struct mlx5_devcom_comp_dev *devcom,
50			   int event, int rollback_event,
51			   void *event_data);
52int mlx5_devcom_comp_get_size(struct mlx5_devcom_comp_dev *devcom);
53
54void mlx5_devcom_comp_set_ready(struct mlx5_devcom_comp_dev *devcom, bool ready);
55bool mlx5_devcom_comp_is_ready(struct mlx5_devcom_comp_dev *devcom);
56
57bool mlx5_devcom_for_each_peer_begin(struct mlx5_devcom_comp_dev *devcom);
58void mlx5_devcom_for_each_peer_end(struct mlx5_devcom_comp_dev *devcom);
59void *mlx5_devcom_get_next_peer_data(struct mlx5_devcom_comp_dev *devcom,
60				     struct mlx5_devcom_comp_dev **pos);
61
62#define mlx5_devcom_for_each_peer_entry(devcom, data, pos)                    \
63	for (pos = NULL, data = mlx5_devcom_get_next_peer_data(devcom, &pos); \
64	     data;                                                            \
65	     data = mlx5_devcom_get_next_peer_data(devcom, &pos))
66
67void *mlx5_devcom_get_next_peer_data_rcu(struct mlx5_devcom_comp_dev *devcom,
68					 struct mlx5_devcom_comp_dev **pos);
69
70#define mlx5_devcom_for_each_peer_entry_rcu(devcom, data, pos)                    \
71	for (pos = NULL, data = mlx5_devcom_get_next_peer_data_rcu(devcom, &pos); \
72	     data;								  \
73	     data = mlx5_devcom_get_next_peer_data_rcu(devcom, &pos))
74
75void mlx5_devcom_comp_lock(struct mlx5_devcom_comp_dev *devcom);
76void mlx5_devcom_comp_unlock(struct mlx5_devcom_comp_dev *devcom);
77int mlx5_devcom_comp_trylock(struct mlx5_devcom_comp_dev *devcom);
78
79#endif /* __LIB_MLX5_DEVCOM_H__ */