sfc: Report units in sensor warnings

Add units to the "Sensor reports condition X for raw value Y" messages.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

1 files changed, 20 insertions, 4 deletions

diff --git a/drivers/net/ethernet/sfc/mcdi_mon.c b/drivers/net/ethernet/sfc/mcdi_mon.c
index d72ad4fc3617..99c80f8c0a0e 100644
--- a/drivers/net/ethernet/sfc/mcdi_mon.c
+++ b/drivers/net/ethernet/sfc/mcdi_mon.c
@@ -24,6 +24,15 @@ enum efx_hwmon_type {
         EFX_HWMON_IN,           /* voltage */
         EFX_HWMON_CURR,         /* current */
         EFX_HWMON_POWER,        /* power */
+        EFX_HWMON_TYPES_COUNT
+};
+
+static const char *const efx_hwmon_unit[EFX_HWMON_TYPES_COUNT] = {
+        [EFX_HWMON_TEMP]  = " degC",
+        [EFX_HWMON_COOL]  = " rpm", /* though nonsense for a heatsink */
+        [EFX_HWMON_IN]    = " mV",
+        [EFX_HWMON_CURR]  = " mA",
+        [EFX_HWMON_POWER] = " W",
 };
 
 static const struct {
@@ -91,7 +100,8 @@ static const char *const sensor_status_names[] = {
 void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev)
 {
         unsigned int type, state, value;
-        const char *name = NULL, *state_txt;
+        enum efx_hwmon_type hwmon_type = EFX_HWMON_UNKNOWN;
+        const char *name = NULL, *state_txt, *unit;
 
         type = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_MONITOR);
         state = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_STATE);
@@ -99,16 +109,22 @@ void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev)
 
         /* Deal gracefully with the board having more drivers than we
          * know about, but do not expect new sensor states. */
-        if (type < ARRAY_SIZE(efx_mcdi_sensor_type))
+        if (type < ARRAY_SIZE(efx_mcdi_sensor_type)) {
                 name = efx_mcdi_sensor_type[type].label;
+                hwmon_type = efx_mcdi_sensor_type[type].hwmon_type;
+        }
         if (!name)
                 name = "No sensor name available";
         EFX_BUG_ON_PARANOID(state >= ARRAY_SIZE(sensor_status_names));
         state_txt = sensor_status_names[state];
+        EFX_BUG_ON_PARANOID(hwmon_type >= EFX_HWMON_TYPES_COUNT);
+        unit = efx_hwmon_unit[hwmon_type];
+        if (!unit)
+                unit = "";
 
         netif_err(efx, hw, efx->net_dev,
-                  "Sensor %d (%s) reports condition '%s' for raw value %d\n",
-                  type, name, state_txt, value);
+                  "Sensor %d (%s) reports condition '%s' for value %d%s\n",
+                  type, name, state_txt, value, unit);
 }
 
 #ifdef CONFIG_SFC_MCDI_MON