drivers/infiniband/hw/mlx5/devx.h

   1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
   2 /*
   3  * Copyright (c) 2019-2020, Mellanox Technologies inc. All rights reserved.
   4  */
   5
   6 #ifndef _MLX5_IB_DEVX_H
   7 #define _MLX5_IB_DEVX_H
   8
   9 #include "mlx5_ib.h"
  10
  11 #define MLX5_MAX_DESTROY_INBOX_SIZE_DW MLX5_ST_SZ_DW(delete_fte_in)
  12 struct devx_obj {
  13         struct mlx5_ib_dev      *ib_dev;
  14         u64                     obj_id;
  15         u32                     dinlen; /* destroy inbox length */
  16         u32                     dinbox[MLX5_MAX_DESTROY_INBOX_SIZE_DW];
  17         u32                     flags;
  18         union {
  19                 struct mlx5_ib_devx_mr  devx_mr;
  20                 struct mlx5_core_dct    core_dct;
  21                 struct mlx5_core_cq     core_cq;
  22                 u32                     flow_counter_bulk_size;
  23         };
  24         struct list_head event_sub; /* holds devx_event_subscription entries */
  25 };
  26 #if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
  27 int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user);
  28 void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid);
  29 int mlx5_ib_devx_init(struct mlx5_ib_dev *dev);
  30 void mlx5_ib_devx_cleanup(struct mlx5_ib_dev *dev);
  31 #else
  32 static inline int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user)
  33 {
  34         return -EOPNOTSUPP;
  35 }
  36 static inline void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid) {}
  37 static inline int mlx5_ib_devx_init(struct mlx5_ib_dev *dev)
  38 {
  39         return 0;
  40 }
  41 static inline void mlx5_ib_devx_cleanup(struct mlx5_ib_dev *dev)
  42 {
  43 }
  44 #endif
  45 #endif /* _MLX5_IB_DEVX_H */