drivers/infiniband/hw/mlx5/dm.h

   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
  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
  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
  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 */