Function bnxt_check_fw_health

dpdk/drivers/net/bnxt/bnxt_ethdev.c:4585–4631

Driver should poll FW heartbeat, reset_counter with the frequency * advertised by FW in HWRM_ERROR_RECOVERY_QCFG. * When the driver detects heartbeat stop or change in reset_counter, * it has to trigger a reset to recover from the error condition. * A “primary function” is the function who will have the privilege to * initiate the chimp reset. The primary function will be elected by the * fi

 * firmware and will be notified through async message.
 */
static void bnxt_check_fw_health(void *arg)
{
	struct bnxt *bp = arg;
	struct bnxt_error_recovery_info *info = bp->recovery_info;
	uint32_t val = 0, wait_msec;

	if (!info || !bnxt_is_recovery_enabled(bp) ||
	    is_bnxt_in_error(bp))
		return;

	val = bnxt_read_fw_status_reg(bp, BNXT_FW_HEARTBEAT_CNT_REG);
	if (val == info->last_heart_beat)
		goto reset;

	info->last_heart_beat = val;

	val = bnxt_read_fw_status_reg(bp, BNXT_FW_RECOVERY_CNT_REG);
	if (val != info->last_reset_counter)
		goto reset;

	info->last_reset_counter = val;

	rte_eal_alarm_set(US_PER_MS * info->driver_polling_freq,
			  bnxt_check_fw_health, (void *)bp);

	return;
reset:
	/* Stop DMA to/from device */
	bp->flags |= BNXT_FLAG_FATAL_ERROR;
	bp->flags |= BNXT_FLAG_FW_RESET;

	bnxt_stop_rxtx(bp->eth_dev);

	PMD_DRV_LOG(ERR, "Detected FW dead condition\n");

	rte_eth_dev_callback_process(bp->eth_dev,
				     RTE_ETH_EVENT_ERR_RECOVERING,
				     NULL);

	if (bnxt_is_primary_func(bp))
		wait_msec = info->primary_func_wait_period;
	else
		wait_msec = info->normal_func_wait_period;

	rte_eal_alarm_set(US_PER_MS * wait_msec,
			  bnxt_fw_reset_cb, (void *)bp);
}

void bnxt_schedule_fw_health_check(struct bnxt *bp)
{