sfc: Disable TX descriptor prefetch watchdog
This hardware watchdog can misfire, so it does more harm than good. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1576,6 +1576,8 @@ void efx_nic_init_common(struct efx_nic *efx)
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EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_SOFT_EVT_EN, 1);
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/* Prefetch threshold 2 => fetch when descriptor cache half empty */
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EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_THRESHOLD, 2);
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/* Disable hardware watchdog which can misfire */
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EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_WD_TMR, 0x3fffff);
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/* Squash TX of packets of 16 bytes or less */
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if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
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EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1);
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