LXR linux/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)
  12struct 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)
  27int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user);
  28void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid);
  29int mlx5_ib_devx_init(struct mlx5_ib_dev *dev);
  30void mlx5_ib_devx_cleanup(struct mlx5_ib_dev *dev);
  31#else
  32static inline int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user)
  33{
  34        return -EOPNOTSUPP;
  35}
  36static inline void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid) {}
  37static inline int mlx5_ib_devx_init(struct mlx5_ib_dev *dev)
  38{
  39        return 0;
  40}
  41static inline void mlx5_ib_devx_cleanup(struct mlx5_ib_dev *dev)
  42{
  43}
  44#endif
  45#endif /* _MLX5_IB_DEVX_H */
  46