net/mlx5: Implement PCAM, MCAM access register commands
Introduced registers will expose capabilities of new registers and
features related to port/management.
Driver will query MCAM and PCAM in order to avoid failing on old
firmwares with lack of support.
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index 090e3a1..b3dabe6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -113,6 +113,11 @@
struct mlx5_eq *mlx5_eqn2eq(struct mlx5_core_dev *dev, int eqn);
void mlx5_cq_tasklet_cb(unsigned long data);
+int mlx5_query_pcam_reg(struct mlx5_core_dev *dev, u32 *pcam, u8 feature_group,
+ u8 access_reg_group);
+int mlx5_query_mcam_reg(struct mlx5_core_dev *dev, u32 *mcap, u8 feature_group,
+ u8 access_reg_group);
+
void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev);
void mlx5_lag_remove(struct mlx5_core_dev *dev);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index 5ea8533..969e352 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -74,6 +74,30 @@
}
EXPORT_SYMBOL_GPL(mlx5_core_access_reg);
+int mlx5_query_pcam_reg(struct mlx5_core_dev *dev, u32 *pcam, u8 feature_group,
+ u8 access_reg_group)
+{
+ u32 in[MLX5_ST_SZ_DW(pcam_reg)] = {0};
+ int sz = MLX5_ST_SZ_BYTES(pcam_reg);
+
+ MLX5_SET(pcam_reg, in, feature_group, feature_group);
+ MLX5_SET(pcam_reg, in, access_reg_group, access_reg_group);
+
+ return mlx5_core_access_reg(dev, in, sz, pcam, sz, MLX5_REG_PCAM, 0, 0);
+}
+
+int mlx5_query_mcam_reg(struct mlx5_core_dev *dev, u32 *mcam, u8 feature_group,
+ u8 access_reg_group)
+{
+ u32 in[MLX5_ST_SZ_DW(mcam_reg)] = {0};
+ int sz = MLX5_ST_SZ_BYTES(mcam_reg);
+
+ MLX5_SET(mcam_reg, in, feature_group, feature_group);
+ MLX5_SET(mcam_reg, in, access_reg_group, access_reg_group);
+
+ return mlx5_core_access_reg(dev, in, sz, mcam, sz, MLX5_REG_MCAM, 0, 0);
+}
+
struct mlx5_reg_pcap {
u8 rsvd0;
u8 port_num;