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Commit ad909eb0 authored by Achiad Shochat's avatar Achiad Shochat Committed by David S. Miller
Browse files

net/mlx5: Introduce physical port PFC access functions 



Add access functions to set and query a physical port PFC
(Priority Flow Control) parameters.

Signed-off-by: default avatarAchiad Shochat <achiad@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ada68c31

drivers/net/ethernet/mellanox/mlx5/core/port.c

+41 −0
Original line number Diff line number Diff line
@@ -364,3 +364,44 @@ int mlx5_query_port_pause(struct mlx5_core_dev *dev, 
	return 0;

}

EXPORT_SYMBOL_GPL(mlx5_query_port_pause);



int mlx5_set_port_pfc(struct mlx5_core_dev *dev, u8 pfc_en_tx, u8 pfc_en_rx)

{

	u32 in[MLX5_ST_SZ_DW(pfcc_reg)];

	u32 out[MLX5_ST_SZ_DW(pfcc_reg)];



	memset(in, 0, sizeof(in));

	MLX5_SET(pfcc_reg, in, local_port, 1);

	MLX5_SET(pfcc_reg, in, pfctx, pfc_en_tx);

	MLX5_SET(pfcc_reg, in, pfcrx, pfc_en_rx);

	MLX5_SET_TO_ONES(pfcc_reg, in, prio_mask_tx);

	MLX5_SET_TO_ONES(pfcc_reg, in, prio_mask_rx);



	return mlx5_core_access_reg(dev, in, sizeof(in), out,

				    sizeof(out), MLX5_REG_PFCC, 0, 1);

}

EXPORT_SYMBOL_GPL(mlx5_set_port_pfc);



int mlx5_query_port_pfc(struct mlx5_core_dev *dev, u8 *pfc_en_tx, u8 *pfc_en_rx)

{

	u32 in[MLX5_ST_SZ_DW(pfcc_reg)];

	u32 out[MLX5_ST_SZ_DW(pfcc_reg)];

	int err;



	memset(in, 0, sizeof(in));

	MLX5_SET(pfcc_reg, in, local_port, 1);



	err = mlx5_core_access_reg(dev, in, sizeof(in), out,

				   sizeof(out), MLX5_REG_PFCC, 0, 0);

	if (err)

		return err;



	if (pfc_en_tx)

		*pfc_en_tx = MLX5_GET(pfcc_reg, out, pfctx);



	if (pfc_en_rx)

		*pfc_en_rx = MLX5_GET(pfcc_reg, out, pfcrx);



	return 0;

}

EXPORT_SYMBOL_GPL(mlx5_query_port_pfc);

include/linux/mlx5/port.h

+4 −0
Original line number Diff line number Diff line
@@ -66,4 +66,8 @@ int mlx5_set_port_pause(struct mlx5_core_dev *dev, u32 rx_pause, u32 tx_pause); 
int mlx5_query_port_pause(struct mlx5_core_dev *dev,

			  u32 *rx_pause, u32 *tx_pause);



int mlx5_set_port_pfc(struct mlx5_core_dev *dev, u8 pfc_en_tx, u8 pfc_en_rx);

int mlx5_query_port_pfc(struct mlx5_core_dev *dev, u8 *pfc_en_tx,

			u8 *pfc_en_rx);



#endif /* __MLX5_PORT_H__ */