diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 68f1461d9919..938803cd29ca 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -22,6 +22,7 @@ #include <linux/inetdevice.h> #include <linux/netlink.h> #include <linux/jhash.h> +#include <linux/log2.h> #include <net/switchdev.h> #include <net/pkt_cls.h> #include <net/tc_act/tc_mirred.h> @@ -753,14 +754,48 @@ mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp, u8 local_port, struct mlxsw_sp_port_mapping *port_mapping) { char pmlp_pl[MLXSW_REG_PMLP_LEN]; + bool separate_rxtx; + u8 module; + u8 width; int err; + int i; mlxsw_reg_pmlp_pack(pmlp_pl, local_port); err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl); if (err) return err; - port_mapping->module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0); - port_mapping->width = mlxsw_reg_pmlp_width_get(pmlp_pl); + module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0); + width = mlxsw_reg_pmlp_width_get(pmlp_pl); + separate_rxtx = mlxsw_reg_pmlp_rxtx_get(pmlp_pl); + + if (width && !is_power_of_2(width)) { + dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: width value is not power of 2\n", + local_port); + return -EINVAL; + } + + for (i = 0; i < width; i++) { + if (mlxsw_reg_pmlp_module_get(pmlp_pl, i) != module) { + dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: contains multiple modules\n", + local_port); + return -EINVAL; + } + if (separate_rxtx && + mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, i) != + mlxsw_reg_pmlp_rx_lane_get(pmlp_pl, i)) { + dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: TX and RX lane numbers are different\n", + local_port); + return -EINVAL; + } + if (mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, i) != i) { + dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: TX and RX lane numbers are not sequential\n", + local_port); + return -EINVAL; + } + } + + port_mapping->module = module; + port_mapping->width = width; port_mapping->lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0); return 0; } |