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Commit 286d47ba authored by Ben Hutchings's avatar Ben Hutchings Committed by David S. Miller
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sfc: Disable TX descriptor prefetch watchdog 



This hardware watchdog can misfire, so it does more harm than good.

Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 50d6ec55

drivers/net/sfc/nic.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -1576,6 +1576,8 @@ void efx_nic_init_common(struct efx_nic *efx) 
	EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_SOFT_EVT_EN, 1);

	EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_SOFT_EVT_EN, 1);

	/* Prefetch threshold 2 => fetch when descriptor cache half empty */

	/* Prefetch threshold 2 => fetch when descriptor cache half empty */

	EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_THRESHOLD, 2);

	EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_THRESHOLD, 2);

	/* Disable hardware watchdog which can misfire */

	EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_WD_TMR, 0x3fffff);

	/* Squash TX of packets of 16 bytes or less */

	/* Squash TX of packets of 16 bytes or less */

	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)

	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)

		EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1);

		EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1);