1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /*
3 * Copyright (c) 2021, Mellanox Technologies inc. All rights reserved.
4 */
5
6 #ifndef _MLX5_IB_DM_H
7 #define _MLX5_IB_DM_H
8
9 #include "mlx5_ib.h"
10
11 extern const struct ib_device_ops mlx5_ib_dev_dm_ops;
12 extern const struct uapi_definition mlx5_ib_dm_defs[];
13
14 struct mlx5_ib_dm {
15 struct ib_dm ibdm;
16 u32 type;
17 phys_addr_t dev_addr;
18 size_t size;
19 };
20
21 struct mlx5_ib_dm_op_entry {
22 struct mlx5_user_mmap_entry mentry;
23 phys_addr_t op_addr;
24 struct mlx5_ib_dm_memic *dm;
25 u8 op;
26 };
27
28 struct mlx5_ib_dm_memic {
29 struct mlx5_ib_dm base;
30 struct mlx5_user_mmap_entry mentry;
31 struct xarray ops;
32 struct mutex ops_xa_lock;
33 struct kref ref;
34 size_t req_length;
35 };
36
37 struct mlx5_ib_dm_icm {
38 struct mlx5_ib_dm base;
39 u32 obj_id;
40 };
41
to_mdm(struct ib_dm * ibdm)42 static inline struct mlx5_ib_dm *to_mdm(struct ib_dm *ibdm)
43 {
44 return container_of(ibdm, struct mlx5_ib_dm, ibdm);
45 }
46
to_memic(struct ib_dm * ibdm)47 static inline struct mlx5_ib_dm_memic *to_memic(struct ib_dm *ibdm)
48 {
49 return container_of(ibdm, struct mlx5_ib_dm_memic, base.ibdm);
50 }
51
to_icm(struct ib_dm * ibdm)52 static inline struct mlx5_ib_dm_icm *to_icm(struct ib_dm *ibdm)
53 {
54 return container_of(ibdm, struct mlx5_ib_dm_icm, base.ibdm);
55 }
56
57 struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev,
58 struct ib_ucontext *context,
59 struct ib_dm_alloc_attr *attr,
60 struct uverbs_attr_bundle *attrs);
61 void mlx5_ib_dm_mmap_free(struct mlx5_ib_dev *dev,
62 struct mlx5_user_mmap_entry *mentry);
63 void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr,
64 u64 length);
65 void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr,
66 u8 operation);
67
68 #endif /* _MLX5_IB_DM_H */
69