From: Achiad Shochat <ach...@mellanox.com>
Add access functions to set and query a physical port PFC
(Priority Flow Control) parameters.
Signed-off-by: Achiad Shochat <ach...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/port.c | 41 ++++++++++++++++++++++++
include/linux/mlx5/port.h | 4 ++
2 files changed, 45 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c
b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index 1e86321..dae7050 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -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);
diff --git a/include/linux/mlx5/port.h b/include/linux/mlx5/port.h
index 7accd4a..4b3644c 100644
--- a/include/linux/mlx5/port.h
+++ b/include/linux/mlx5/port.h
@@ -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__ */
--
1.7.1
