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Message-Id: <20200607145945.30559-8-amitc@mellanox.com>
Date: Sun, 7 Jun 2020 17:59:42 +0300
From: Amit Cohen <amitc@...lanox.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, kuba@...nel.org, corbet@....net,
jiri@...lanox.com, idosch@...lanox.com, shuah@...nel.org,
mkubecek@...e.cz, gustavo@...eddedor.com, amitc@...lanox.com,
cforno12@...ux.vnet.ibm.com, andrew@...n.ch, f.fainelli@...il.com,
linux@...pel-privat.de, alexandru.ardelean@...log.com,
ayal@...lanox.com, petrm@...lanox.com, mlxsw@...lanox.com,
liuhangbin@...il.com, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: [RFC PATCH net-next 07/10] mlxsw: spectrum_ethtool: Add link extended state
Implement .get_down_ext_state() as part of ethtool_ops.
Query link down reason from PDDR register and convert it to ethtool
ext_state.
In case that more information than common ext_state is provided,
fill ext_substate also with the appropriate value.
Signed-off-by: Amit Cohen <amitc@...lanox.com>
Reviewed-by: Petr Machata <petrm@...lanox.com>
Reviewed-by: Jiri Pirko <jiri@...lanox.com>
---
.../mellanox/mlxsw/spectrum_ethtool.c | 142 ++++++++++++++++++
1 file changed, 142 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
index 04e1db604c69..ca0bfd07aab6 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
@@ -26,6 +26,147 @@ static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
sizeof(drvinfo->bus_info));
}
+struct mlxsw_sp_ethtool_ext_state_opcode_mapping {
+ u32 status_opcode;
+ enum ethtool_ext_state ext_state;
+ int ext_substate;
+};
+
+static const struct mlxsw_sp_ethtool_ext_state_opcode_mapping
+mlxsw_sp_ext_state_opcode_map[] = {
+ {2, ETHTOOL_EXT_STATE_AUTONEG_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED},
+ {3, ETHTOOL_EXT_STATE_AUTONEG_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_AN_ACK_NOT_RECEIVED},
+ {4, ETHTOOL_EXT_STATE_AUTONEG_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_AN_NEXT_PAGE_EXCHANGE_FAILED},
+ {36, ETHTOOL_EXT_STATE_AUTONEG_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED_FORCE_MODE},
+ {38, ETHTOOL_EXT_STATE_AUTONEG_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_AN_FEC_MISMATCH_DURING_OVERRIDE},
+ {39, ETHTOOL_EXT_STATE_AUTONEG_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_AN_NO_HCD},
+
+ {5, ETHTOOL_EXT_STATE_LINK_TRAINING_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_LT_KR_FRAME_LOCK_NOT_ACQUIRED},
+ {6, ETHTOOL_EXT_STATE_LINK_TRAINING_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_LT_KR_LINK_INHIBIT_TIMEOUT},
+ {7, ETHTOOL_EXT_STATE_LINK_TRAINING_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_LT_KR_LINK_PARTNER_DID_NOT_SET_RECEIVER_READY},
+ {8, ETHTOOL_EXT_STATE_LINK_TRAINING_FAILURE, 0},
+ {14, ETHTOOL_EXT_STATE_LINK_TRAINING_FAILURE,
+ ETHTOOL_EXT_SUBSTATE_LT_REMOTE_FAULT},
+
+ {9, ETHTOOL_EXT_STATE_LINK_LOGICAL_MISMATCH,
+ ETHTOOL_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_BLOCK_LOCK},
+ {10, ETHTOOL_EXT_STATE_LINK_LOGICAL_MISMATCH,
+ ETHTOOL_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_AM_LOCK},
+ {11, ETHTOOL_EXT_STATE_LINK_LOGICAL_MISMATCH,
+ ETHTOOL_EXT_SUBSTATE_LLM_PCS_DID_NOT_GET_ALIGN_STATUS},
+ {12, ETHTOOL_EXT_STATE_LINK_LOGICAL_MISMATCH,
+ ETHTOOL_EXT_SUBSTATE_LLM_FC_FEC_IS_NOT_LOCKED},
+ {13, ETHTOOL_EXT_STATE_LINK_LOGICAL_MISMATCH,
+ ETHTOOL_EXT_SUBSTATE_LLM_RS_FEC_IS_NOT_LOCKED},
+
+ {15, ETHTOOL_EXT_STATE_BAD_SIGNAL_INTEGRITY, 0},
+ {17, ETHTOOL_EXT_STATE_BAD_SIGNAL_INTEGRITY,
+ ETHTOOL_EXT_SUBSTATE_BSI_LARGE_NUMBER_OF_PHYSICAL_ERRORS},
+ {42, ETHTOOL_EXT_STATE_BAD_SIGNAL_INTEGRITY,
+ ETHTOOL_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE},
+
+ {1024, ETHTOOL_EXT_STATE_NO_CABLE, 0},
+
+ {16, ETHTOOL_EXT_STATE_CABLE_ISSUE,
+ ETHTOOL_EXT_SUBSTATE_UNSUPPORTED_CABLE},
+ {20, ETHTOOL_EXT_STATE_CABLE_ISSUE,
+ ETHTOOL_EXT_SUBSTATE_UNSUPPORTED_CABLE},
+ {29, ETHTOOL_EXT_STATE_CABLE_ISSUE,
+ ETHTOOL_EXT_SUBSTATE_UNSUPPORTED_CABLE},
+ {1025, ETHTOOL_EXT_STATE_CABLE_ISSUE,
+ ETHTOOL_EXT_SUBSTATE_UNSUPPORTED_CABLE},
+ {1029, ETHTOOL_EXT_STATE_CABLE_ISSUE,
+ ETHTOOL_EXT_SUBSTATE_UNSUPPORTED_CABLE},
+ {1031, ETHTOOL_EXT_STATE_CABLE_ISSUE,
+ ETHTOOL_EXT_SUBSTATE_SHORTED_CABLE},
+
+ {1027, ETHTOOL_EXT_STATE_EEPROM_ISSUE, 0},
+
+ {23, ETHTOOL_EXT_STATE_CALIBRATION_FAILURE, 0},
+
+ {1032, ETHTOOL_EXT_STATE_POWER_BUDGET_EXCEEDED, 0},
+
+ {1030, ETHTOOL_EXT_STATE_OVERHEAT, 0},
+};
+
+static void
+mlxsw_sp_port_set_ext_state(struct mlxsw_sp_ethtool_ext_state_opcode_mapping ext_state_mapping,
+ struct ethtool_ext_state_info *ext_state_info)
+{
+ switch (ext_state_mapping.ext_state) {
+ case ETHTOOL_EXT_STATE_AUTONEG_FAILURE:
+ ext_state_info->autoneg =
+ ext_state_mapping.ext_substate;
+ break;
+ case ETHTOOL_EXT_STATE_LINK_TRAINING_FAILURE:
+ ext_state_info->link_training =
+ ext_state_mapping.ext_substate;
+ break;
+ case ETHTOOL_EXT_STATE_LINK_LOGICAL_MISMATCH:
+ ext_state_info->link_logical_mismatch =
+ ext_state_mapping.ext_substate;
+ break;
+ case ETHTOOL_EXT_STATE_BAD_SIGNAL_INTEGRITY:
+ ext_state_info->bad_signal_integrity =
+ ext_state_mapping.ext_substate;
+ break;
+ case ETHTOOL_EXT_STATE_CABLE_ISSUE:
+ ext_state_info->cable_issue =
+ ext_state_mapping.ext_substate;
+ break;
+ default:
+ break;
+ }
+
+ ext_state_info->ext_state = ext_state_mapping.ext_state;
+}
+
+static int
+mlxsw_sp_port_get_ext_state(struct net_device *dev,
+ struct ethtool_ext_state_info *ext_state_info)
+{
+ struct mlxsw_sp_ethtool_ext_state_opcode_mapping ext_state_mapping;
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+ char pddr_pl[MLXSW_REG_PDDR_LEN];
+ int opcode, err, i;
+ u32 status_opcode;
+
+ mlxsw_reg_pddr_pack(pddr_pl, mlxsw_sp_port->local_port,
+ MLXSW_REG_PDDR_PAGE_SELECT_TROUBLESHOOTING_INFO);
+
+ opcode = MLXSW_REG_PDDR_TRBLSH_GROUP_OPCODE_MONITOR;
+ mlxsw_reg_pddr_trblsh_group_opcode_set(pddr_pl, opcode);
+
+ err = mlxsw_reg_query(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pddr),
+ pddr_pl);
+ if (err)
+ return err;
+
+ status_opcode = mlxsw_reg_pddr_trblsh_status_opcode_get(pddr_pl);
+ if (!status_opcode)
+ return -ENODATA;
+
+ for (i = 0; i < ARRAY_SIZE(mlxsw_sp_ext_state_opcode_map); i++) {
+ ext_state_mapping = mlxsw_sp_ext_state_opcode_map[i];
+ if (ext_state_mapping.status_opcode == status_opcode) {
+ mlxsw_sp_port_set_ext_state(ext_state_mapping,
+ ext_state_info);
+ return 0;
+ }
+ }
+
+ return -ENODATA;
+}
+
static void mlxsw_sp_port_get_pauseparam(struct net_device *dev,
struct ethtool_pauseparam *pause)
{
@@ -827,6 +968,7 @@ mlxsw_sp_get_ts_info(struct net_device *netdev, struct ethtool_ts_info *info)
const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
.get_drvinfo = mlxsw_sp_port_get_drvinfo,
.get_link = ethtool_op_get_link,
+ .get_ext_state = mlxsw_sp_port_get_ext_state,
.get_pauseparam = mlxsw_sp_port_get_pauseparam,
.set_pauseparam = mlxsw_sp_port_set_pauseparam,
.get_strings = mlxsw_sp_port_get_strings,
--
2.20.1
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