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Commit 4f3961ee authored by Saeed Mahameed's avatar Saeed Mahameed Committed by David S. Miller
Browse files

net/mlx5: Introduce physical port TC/prio access functions 



Add access functions to set and query a physical port TC groups
and prio parameters.

Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ad909eb0

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

+76 −0
Original line number Diff line number Diff line
@@ -405,3 +405,79 @@ int mlx5_query_port_pfc(struct mlx5_core_dev *dev, u8 *pfc_en_tx, u8 *pfc_en_rx) 
	return 0;

}

EXPORT_SYMBOL_GPL(mlx5_query_port_pfc);



int mlx5_max_tc(struct mlx5_core_dev *mdev)

{

	u8 num_tc = MLX5_CAP_GEN(mdev, max_tc) ? : 8;



	return num_tc - 1;

}



int mlx5_set_port_prio_tc(struct mlx5_core_dev *mdev, u8 *prio_tc)

{

	u32 in[MLX5_ST_SZ_DW(qtct_reg)];

	u32 out[MLX5_ST_SZ_DW(qtct_reg)];

	int err;

	int i;



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

	for (i = 0; i < 8; i++) {

		if (prio_tc[i] > mlx5_max_tc(mdev))

			return -EINVAL;



		MLX5_SET(qtct_reg, in, prio, i);

		MLX5_SET(qtct_reg, in, tclass, prio_tc[i]);



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

					   sizeof(out), MLX5_REG_QTCT, 0, 1);

		if (err)

			return err;

	}



	return 0;

}

EXPORT_SYMBOL_GPL(mlx5_set_port_prio_tc);



static int mlx5_set_port_qetcr_reg(struct mlx5_core_dev *mdev, u32 *in,

				   int inlen)

{

	u32 out[MLX5_ST_SZ_DW(qtct_reg)];



	if (!MLX5_CAP_GEN(mdev, ets))

		return -ENOTSUPP;



	return mlx5_core_access_reg(mdev, in, inlen, out, sizeof(out),

				    MLX5_REG_QETCR, 0, 1);

}



int mlx5_set_port_tc_group(struct mlx5_core_dev *mdev, u8 *tc_group)

{

	u32 in[MLX5_ST_SZ_DW(qetc_reg)];

	int i;



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



	for (i = 0; i <= mlx5_max_tc(mdev); i++) {

		MLX5_SET(qetc_reg, in, tc_configuration[i].g, 1);

		MLX5_SET(qetc_reg, in, tc_configuration[i].group, tc_group[i]);

	}



	return mlx5_set_port_qetcr_reg(mdev, in, sizeof(in));

}

EXPORT_SYMBOL_GPL(mlx5_set_port_tc_group);



int mlx5_set_port_tc_bw_alloc(struct mlx5_core_dev *mdev, u8 *tc_bw)

{

	u32 in[MLX5_ST_SZ_DW(qetc_reg)];

	int i;



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



	for (i = 0; i <= mlx5_max_tc(mdev); i++) {

		MLX5_SET(qetc_reg, in, tc_configuration[i].b, 1);

		MLX5_SET(qetc_reg, in, tc_configuration[i].bw_allocation, tc_bw[i]);

	}



	return mlx5_set_port_qetcr_reg(mdev, in, sizeof(in));

}

EXPORT_SYMBOL_GPL(mlx5_set_port_tc_bw_alloc);

include/linux/mlx5/driver.h

+2 −0
Original line number Diff line number Diff line
@@ -99,6 +99,8 @@ enum { 
};



enum {

	MLX5_REG_QETCR		 = 0x4005,

	MLX5_REG_QTCT		 = 0x400a,

	MLX5_REG_PCAP		 = 0x5001,

	MLX5_REG_PMTU		 = 0x5003,

	MLX5_REG_PTYS		 = 0x5004,

include/linux/mlx5/mlx5_ifc.h

+48 −1
Original line number Diff line number Diff line
@@ -729,7 +729,9 @@ struct mlx5_ifc_cmd_hca_cap_bits { 


	u8         reserved_at_1bf[0x3];

	u8         log_max_msg[0x5];

	u8         reserved_at_1c7[0x18];

	u8         reserved_at_1c7[0x4];

	u8         max_tc[0x4];

	u8         reserved_at_1cf[0x10];



	u8         stat_rate_support[0x10];

	u8         reserved_at_1ef[0xc];
@@ -7061,4 +7063,49 @@ struct mlx5_ifc_modify_flow_table_in_bits { 
	u8         reserved_at_100[0x100];

};



struct mlx5_ifc_ets_tcn_config_reg_bits {

	u8         g[0x1];

	u8         b[0x1];

	u8         r[0x1];

	u8         reserved_at_3[0x9];

	u8         group[0x4];

	u8         reserved_at_10[0x9];

	u8         bw_allocation[0x7];



	u8         reserved_at_20[0xc];

	u8         max_bw_units[0x4];

	u8         reserved_at_30[0x8];

	u8         max_bw_value[0x8];

};



struct mlx5_ifc_ets_global_config_reg_bits {

	u8         reserved_at_0[0x2];

	u8         r[0x1];

	u8         reserved_at_3[0x1d];



	u8         reserved_at_20[0xc];

	u8         max_bw_units[0x4];

	u8         reserved_at_30[0x8];

	u8         max_bw_value[0x8];

};



struct mlx5_ifc_qetc_reg_bits {

	u8                                         reserved_at_0[0x8];

	u8                                         port_number[0x8];

	u8                                         reserved_at_10[0x30];



	struct mlx5_ifc_ets_tcn_config_reg_bits    tc_configuration[0x8];

	struct mlx5_ifc_ets_global_config_reg_bits global_configuration;

};



struct mlx5_ifc_qtct_reg_bits {

	u8         reserved_at_0[0x8];

	u8         port_number[0x8];

	u8         reserved_at_10[0xd];

	u8         prio[0x3];



	u8         reserved_at_20[0x1d];

	u8         tclass[0x3];

};



#endif /* MLX5_IFC_H */

include/linux/mlx5/port.h

+6 −0
Original line number Diff line number Diff line
@@ -70,4 +70,10 @@ 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);



int mlx5_max_tc(struct mlx5_core_dev *mdev);



int mlx5_set_port_prio_tc(struct mlx5_core_dev *mdev, u8 *prio_tc);

int mlx5_set_port_tc_group(struct mlx5_core_dev *mdev, u8 *tc_group);

int mlx5_set_port_tc_bw_alloc(struct mlx5_core_dev *mdev, u8 *tc_bw);



#endif /* __MLX5_PORT_H__ */