Commit a19b4801 authored by Kalesh AP's avatar Kalesh AP Committed by David S. Miller
Browse files

bnxt_en: Event handler for Thermal event 

Newer FW will send a new async event when it detects that
the chip's temperature has crossed the configured threshold value.
The driver will now notify hwmon and will log a warning message.

Link: https://lore.kernel.org/netdev/20230815045658.80494-13-michael.chan@broadcom.com/


Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
Signed-off-by: default avatarKalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Acked-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3d9cf962

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+52 −0
Original line number Diff line number Diff line
@@ -2129,6 +2129,24 @@ static u16 bnxt_agg_ring_id_to_grp_idx(struct bnxt *bp, u16 ring_id) 
	return INVALID_HW_RING_ID;

}



#define BNXT_EVENT_THERMAL_CURRENT_TEMP(data2)				\

	((data2) &							\

	  ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA2_CURRENT_TEMP_MASK)



#define BNXT_EVENT_THERMAL_THRESHOLD_TEMP(data2)			\

	(((data2) &							\

	  ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA2_THRESHOLD_TEMP_MASK) >>\

	 ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA2_THRESHOLD_TEMP_SFT)



#define EVENT_DATA1_THERMAL_THRESHOLD_TYPE(data1)			\

	((data1) &							\

	 ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_MASK)



#define EVENT_DATA1_THERMAL_THRESHOLD_DIR_INCREASING(data1)		\

	(((data1) &							\

	  ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_TRANSITION_DIR) ==\

	 ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_TRANSITION_DIR_INCREASING)



static void bnxt_event_error_report(struct bnxt *bp, u32 data1, u32 data2)

{

	u32 err_type = BNXT_EVENT_ERROR_REPORT_TYPE(data1);
@@ -2144,6 +2162,40 @@ static void bnxt_event_error_report(struct bnxt *bp, u32 data1, u32 data2) 
	case ASYNC_EVENT_CMPL_ERROR_REPORT_BASE_EVENT_DATA1_ERROR_TYPE_DOORBELL_DROP_THRESHOLD:

		netdev_warn(bp->dev, "One or more MMIO doorbells dropped by the device!\n");

		break;

	case ASYNC_EVENT_CMPL_ERROR_REPORT_BASE_EVENT_DATA1_ERROR_TYPE_THERMAL_THRESHOLD: {

		u32 type = EVENT_DATA1_THERMAL_THRESHOLD_TYPE(data1);

		char *threshold_type;

		char *dir_str;



		switch (type) {

		case ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_WARN:

			threshold_type = "warning";

			break;

		case ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_CRITICAL:

			threshold_type = "critical";

			break;

		case ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_FATAL:

			threshold_type = "fatal";

			break;

		case ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_SHUTDOWN:

			threshold_type = "shutdown";

			break;

		default:

			netdev_err(bp->dev, "Unknown Thermal threshold type event\n");

			return;

		}

		if (EVENT_DATA1_THERMAL_THRESHOLD_DIR_INCREASING(data1))

			dir_str = "above";

		else

			dir_str = "below";

		netdev_warn(bp->dev, "Chip temperature has gone %s the %s thermal threshold!\n",

			    dir_str, threshold_type);

		netdev_warn(bp->dev, "Temperature (In Celsius), Current: %lu, threshold: %lu\n",

			    BNXT_EVENT_THERMAL_CURRENT_TEMP(data2),

			    BNXT_EVENT_THERMAL_THRESHOLD_TEMP(data2));

		bnxt_hwmon_notify_event(bp, type);

		break;

	}

	default:

		netdev_err(bp->dev, "FW reported unknown error type %u\n",

			   err_type);

drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c

+25 −0
Original line number Diff line number Diff line
@@ -18,6 +18,31 @@ 
#include "bnxt_hwrm.h"

#include "bnxt_hwmon.h"



void bnxt_hwmon_notify_event(struct bnxt *bp, u32 type)

{

	u32 attr;



	if (!bp->hwmon_dev)

		return;



	switch (type) {

	case ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_WARN:

		attr = hwmon_temp_max_alarm;

		break;

	case ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_CRITICAL:

		attr = hwmon_temp_crit_alarm;

		break;

	case ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_FATAL:

	case ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA1_THRESHOLD_TYPE_SHUTDOWN:

		attr = hwmon_temp_emergency_alarm;

		break;

	default:

		return;

	}



	hwmon_notify_event(&bp->pdev->dev, hwmon_temp, attr, 0);

}



static int bnxt_hwrm_temp_query(struct bnxt *bp, u8 *temp)

{

	struct hwrm_temp_monitor_query_output *resp;

drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.h

+5 −0
Original line number Diff line number Diff line
@@ -11,9 +11,14 @@ 
#define BNXT_HWMON_H



#ifdef CONFIG_BNXT_HWMON

void bnxt_hwmon_notify_event(struct bnxt *bp, u32 type);

void bnxt_hwmon_uninit(struct bnxt *bp);

void bnxt_hwmon_init(struct bnxt *bp);

#else

static inline void bnxt_hwmon_notify_event(struct bnxt *bp, u32 type)

{

}



static inline void bnxt_hwmon_uninit(struct bnxt *bp)

{

}