+
+static int mlx5_query_ports_check(struct mlx5_core_dev *mdev, u32 *out,
+ int outlen)
+{
+ u32 in[MLX5_ST_SZ_DW(pcmr_reg)];
+
+ memset(in, 0, sizeof(in));
+ MLX5_SET(pcmr_reg, in, local_port, 1);
+
+ return mlx5_core_access_reg(mdev, in, sizeof(in), out,
+ outlen, MLX5_REG_PCMR, 0, 0);
+}
+
+static int mlx5_set_ports_check(struct mlx5_core_dev *mdev, u32 *in, int inlen)
+{
+ u32 out[MLX5_ST_SZ_DW(pcmr_reg)];
+
+ return mlx5_core_access_reg(mdev, in, inlen, out,
+ sizeof(out), MLX5_REG_PCMR, 0, 1);
+}
+
+int mlx5_set_port_fcs(struct mlx5_core_dev *mdev, u8 enable)
+{
+ u32 in[MLX5_ST_SZ_DW(pcmr_reg)];
+
+ memset(in, 0, sizeof(in));
+ MLX5_SET(pcmr_reg, in, local_port, 1);
+ MLX5_SET(pcmr_reg, in, fcs_chk, enable);
+
+ return mlx5_set_ports_check(mdev, in, sizeof(in));
+}
+
+void mlx5_query_port_fcs(struct mlx5_core_dev *mdev, bool *supported,
+ bool *enabled)
+{
+ u32 out[MLX5_ST_SZ_DW(pcmr_reg)];
+ /* Default values for FW which do not support MLX5_REG_PCMR */
+ *supported = false;
+ *enabled = true;
+
+ if (!MLX5_CAP_GEN(mdev, ports_check))
+ return;
+
+ if (mlx5_query_ports_check(mdev, out, sizeof(out)))
+ return;
+
+ *supported = !!(MLX5_GET(pcmr_reg, out, fcs_cap));
+ *enabled = !!(MLX5_GET(pcmr_reg, out, fcs_chk));
+}