drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.h

   1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
   2 /* Copyright (c) 2019 Mellanox Technologies */
   3
   4 #ifndef __MLX5_PCI_VSC_H__
   5 #define __MLX5_PCI_VSC_H__
   6
   7 enum mlx5_vsc_state {
   8         MLX5_VSC_UNLOCK,
   9         MLX5_VSC_LOCK,
  10 };
  11
  12 enum {
  13         MLX5_VSC_SPACE_SCAN_CRSPACE = 0x7,
  14 };
  15
  16 void mlx5_pci_vsc_init(struct mlx5_core_dev *dev);
  17 int mlx5_vsc_gw_lock(struct mlx5_core_dev *dev);
  18 int mlx5_vsc_gw_unlock(struct mlx5_core_dev *dev);
  19 int mlx5_vsc_gw_set_space(struct mlx5_core_dev *dev, u16 space,
  20                           u32 *ret_space_size);
  21 int mlx5_vsc_gw_read_block_fast(struct mlx5_core_dev *dev, u32 *data,
  22                                 int length);
  23
  24 static inline bool mlx5_vsc_accessible(struct mlx5_core_dev *dev)
  25 {
  26         return !!dev->vsc_addr;
  27 }
  28
  29 int mlx5_vsc_sem_set_space(struct mlx5_core_dev *dev, u16 space,
  30                            enum mlx5_vsc_state state);
  31
  32 #endif /* __MLX5_PCI_VSC_H__ */