1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2019 Mellanox Technologies. */
3
4 #ifndef __LIB_HV_VHCA_H__
5 #define __LIB_HV_VHCA_H__
6
7 #include "en.h"
8 #include "lib/hv.h"
9
10 struct mlx5_hv_vhca_agent;
11 struct mlx5_hv_vhca;
12 struct mlx5_hv_vhca_control_block;
13
14 enum mlx5_hv_vhca_agent_type {
15 MLX5_HV_VHCA_AGENT_CONTROL = 0,
16 MLX5_HV_VHCA_AGENT_STATS = 1,
17 MLX5_HV_VHCA_AGENT_MAX = 32,
18 };
19
20 #if IS_ENABLED(CONFIG_PCI_HYPERV_INTERFACE)
21
22 struct mlx5_hv_vhca_control_block {
23 u32 capabilities;
24 u32 control;
25 u16 command;
26 u16 command_ack;
27 u16 version;
28 u16 rings;
29 u32 reserved1[28];
30 };
31
32 struct mlx5_hv_vhca *mlx5_hv_vhca_create(struct mlx5_core_dev *dev);
33 void mlx5_hv_vhca_destroy(struct mlx5_hv_vhca *hv_vhca);
34 int mlx5_hv_vhca_init(struct mlx5_hv_vhca *hv_vhca);
35 void mlx5_hv_vhca_cleanup(struct mlx5_hv_vhca *hv_vhca);
36 void mlx5_hv_vhca_invalidate(void *context, u64 block_mask);
37
38 struct mlx5_hv_vhca_agent *
39 mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,
40 enum mlx5_hv_vhca_agent_type type,
41 void (*control)(struct mlx5_hv_vhca_agent*,
42 struct mlx5_hv_vhca_control_block *block),
43 void (*invalidate)(struct mlx5_hv_vhca_agent*,
44 u64 block_mask),
45 void (*cleanup)(struct mlx5_hv_vhca_agent *agent),
46 void *context);
47
48 void mlx5_hv_vhca_agent_destroy(struct mlx5_hv_vhca_agent *agent);
49 int mlx5_hv_vhca_agent_write(struct mlx5_hv_vhca_agent *agent,
50 void *buf, int len);
51 void *mlx5_hv_vhca_agent_priv(struct mlx5_hv_vhca_agent *agent);
52
53 #else
54
55 static inline struct mlx5_hv_vhca *
mlx5_hv_vhca_create(struct mlx5_core_dev * dev)56 mlx5_hv_vhca_create(struct mlx5_core_dev *dev)
57 {
58 return NULL;
59 }
60
mlx5_hv_vhca_destroy(struct mlx5_hv_vhca * hv_vhca)61 static inline void mlx5_hv_vhca_destroy(struct mlx5_hv_vhca *hv_vhca)
62 {
63 }
64
mlx5_hv_vhca_init(struct mlx5_hv_vhca * hv_vhca)65 static inline int mlx5_hv_vhca_init(struct mlx5_hv_vhca *hv_vhca)
66 {
67 return 0;
68 }
69
mlx5_hv_vhca_cleanup(struct mlx5_hv_vhca * hv_vhca)70 static inline void mlx5_hv_vhca_cleanup(struct mlx5_hv_vhca *hv_vhca)
71 {
72 }
73
mlx5_hv_vhca_invalidate(void * context,u64 block_mask)74 static inline void mlx5_hv_vhca_invalidate(void *context,
75 u64 block_mask)
76 {
77 }
78
79 static inline struct mlx5_hv_vhca_agent *
mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca * hv_vhca,enum mlx5_hv_vhca_agent_type type,void (* control)(struct mlx5_hv_vhca_agent *,struct mlx5_hv_vhca_control_block * block),void (* invalidate)(struct mlx5_hv_vhca_agent *,u64 block_mask),void (* cleanup)(struct mlx5_hv_vhca_agent * agent),void * context)80 mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,
81 enum mlx5_hv_vhca_agent_type type,
82 void (*control)(struct mlx5_hv_vhca_agent*,
83 struct mlx5_hv_vhca_control_block *block),
84 void (*invalidate)(struct mlx5_hv_vhca_agent*,
85 u64 block_mask),
86 void (*cleanup)(struct mlx5_hv_vhca_agent *agent),
87 void *context)
88 {
89 return NULL;
90 }
91
mlx5_hv_vhca_agent_destroy(struct mlx5_hv_vhca_agent * agent)92 static inline void mlx5_hv_vhca_agent_destroy(struct mlx5_hv_vhca_agent *agent)
93 {
94 }
95
96 static inline int
mlx5_hv_vhca_write_agent(struct mlx5_hv_vhca_agent * agent,void * buf,int len)97 mlx5_hv_vhca_write_agent(struct mlx5_hv_vhca_agent *agent,
98 void *buf, int len)
99 {
100 return 0;
101 }
102 #endif
103
104 #endif /* __LIB_HV_VHCA_H__ */
105
