Exemple #1
0
int falcon_xmac_set_pause(struct efx_nic *efx, enum efx_fc_type flow_control)
{
	bool reset;

	if (flow_control & EFX_FC_AUTO) {
		EFX_LOG(efx, "10G does not support flow control "
			"autonegotiation\n");
		return -EINVAL;
	}

	if ((flow_control & EFX_FC_TX) && !(flow_control & EFX_FC_RX))
		return -EINVAL;

	/* TX flow control may automatically turn itself off if the
	 * link partner (intermittently) stops responding to pause
	 * frames. There isn't any indication that this has happened,
	 * so the best we do is leave it up to the user to spot this
	 * and fix it be cycling transmit flow control on this end. */
	reset = ((flow_control & EFX_FC_TX) &&
		 !(efx->flow_control & EFX_FC_TX));
	if (EFX_WORKAROUND_11482(efx) && reset) {
		if (falcon_rev(efx) >= FALCON_REV_B0) {
			/* Recover by resetting the EM block */
			if (efx->link_up)
				falcon_drain_tx_fifo(efx);
		} else {
			/* Schedule a reset to recover */
			efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
		}
	}

	efx->flow_control = flow_control;

	return 0;
}
Exemple #2
0
static void falcon_deconfigure_mac_wrapper(struct efx_nic *efx)
{
	efx_oword_t reg;

	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
		return;

	
	efx_reado(efx, &reg, FR_AZ_RX_CFG);
	EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_INGR_EN, 0);
	efx_writeo(efx, &reg, FR_AZ_RX_CFG);

	
	falcon_drain_tx_fifo(efx);
}