From: Amit Cohen <[email protected]> Add new attributes to hwmon object for exposing critical and emergency alarms.
In case that current temperature is higher than emergency threshold, EMERGENCY alarm will be reported in sensors utility: $ sensors ... front panel 025: +55.0°C (crit = +35.0°C, emerg = +40.0°C) ALARM(EMERGENCY) In case that current temperature is higher than critical threshold, CRIT alarm will be reported in sensors utility: $ sensors ... front panel 025: +54.0°C (crit = +35.0°C, emerg = +80.0°C) ALARM(CRIT) Signed-off-by: Amit Cohen <[email protected]> Reviewed-by: Petr Machata <[email protected]> Acked-by: Vadim Pasternak <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> --- .../net/ethernet/mellanox/mlxsw/core_hwmon.c | 71 ++++++++++++++++++- 1 file changed, 70 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c b/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c index f1b0c176eaeb..8232bc0f5c03 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c @@ -17,7 +17,7 @@ #define MLXSW_HWMON_GEARBOXES_MAX_COUNT 32 #define MLXSW_HWMON_ATTR_PER_SENSOR 3 -#define MLXSW_HWMON_ATTR_PER_MODULE 5 +#define MLXSW_HWMON_ATTR_PER_MODULE 7 #define MLXSW_HWMON_ATTR_PER_GEARBOX 4 #define MLXSW_HWMON_ATTR_COUNT (MLXSW_HWMON_SENSORS_MAX_COUNT * MLXSW_HWMON_ATTR_PER_SENSOR + \ @@ -388,6 +388,53 @@ mlxsw_hwmon_gbox_temp_label_show(struct device *dev, return sprintf(buf, "gearbox %03u\n", index); } +static ssize_t mlxsw_hwmon_temp_critical_alarm_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int err, temp, emergency_temp, critic_temp; + + err = mlxsw_hwmon_module_temp_get(dev, attr, &temp); + if (err) + return err; + + if (temp <= 0) + return sprintf(buf, "%d\n", false); + + err = mlxsw_hwmon_module_temp_emergency_get(dev, attr, &emergency_temp); + if (err) + return err; + + if (temp >= emergency_temp) + return sprintf(buf, "%d\n", false); + + err = mlxsw_hwmon_module_temp_critical_get(dev, attr, &critic_temp); + if (err) + return err; + + return sprintf(buf, "%d\n", temp >= critic_temp); +} + +static ssize_t mlxsw_hwmon_temp_emergency_alarm_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int err, temp, emergency_temp; + + err = mlxsw_hwmon_module_temp_get(dev, attr, &temp); + if (err) + return err; + + if (temp <= 0) + return sprintf(buf, "%d\n", false); + + err = mlxsw_hwmon_module_temp_emergency_get(dev, attr, &emergency_temp); + if (err) + return err; + + return sprintf(buf, "%d\n", temp >= emergency_temp); +} + enum mlxsw_hwmon_attr_type { MLXSW_HWMON_ATTR_TYPE_TEMP, MLXSW_HWMON_ATTR_TYPE_TEMP_MAX, @@ -401,6 +448,8 @@ enum mlxsw_hwmon_attr_type { MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG, MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL, MLXSW_HWMON_ATTR_TYPE_TEMP_GBOX_LABEL, + MLXSW_HWMON_ATTR_TYPE_TEMP_CRIT_ALARM, + MLXSW_HWMON_ATTR_TYPE_TEMP_EMERGENCY_ALARM, }; static void mlxsw_hwmon_attr_add(struct mlxsw_hwmon *mlxsw_hwmon, @@ -491,6 +540,20 @@ static void mlxsw_hwmon_attr_add(struct mlxsw_hwmon *mlxsw_hwmon, snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name), "temp%u_label", num + 1); break; + case MLXSW_HWMON_ATTR_TYPE_TEMP_CRIT_ALARM: + mlxsw_hwmon_attr->dev_attr.show = + mlxsw_hwmon_temp_critical_alarm_show; + mlxsw_hwmon_attr->dev_attr.attr.mode = 0444; + snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name), + "temp%u_crit_alarm", num + 1); + break; + case MLXSW_HWMON_ATTR_TYPE_TEMP_EMERGENCY_ALARM: + mlxsw_hwmon_attr->dev_attr.show = + mlxsw_hwmon_temp_emergency_alarm_show; + mlxsw_hwmon_attr->dev_attr.attr.mode = 0444; + snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name), + "temp%u_emergency_alarm", num + 1); + break; default: WARN_ON(1); } @@ -613,6 +676,12 @@ static int mlxsw_hwmon_module_init(struct mlxsw_hwmon *mlxsw_hwmon) mlxsw_hwmon_attr_add(mlxsw_hwmon, MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL, i, i); + mlxsw_hwmon_attr_add(mlxsw_hwmon, + MLXSW_HWMON_ATTR_TYPE_TEMP_CRIT_ALARM, + i, i); + mlxsw_hwmon_attr_add(mlxsw_hwmon, + MLXSW_HWMON_ATTR_TYPE_TEMP_EMERGENCY_ALARM, + i, i); } return 0; -- 2.26.2
