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authorBen Hutchings <bhutchings@solarflare.com>2009-12-23 08:49:13 -0500
committerDavid S. Miller <davem@davemloft.net>2009-12-23 22:09:08 -0500
commit286d47ba90315a871f77351f7f61b7e4a96476a9 (patch)
tree0d5c3d03c51f2734248ec4dfb33f3736ce140207 /drivers/net/sfc/nic.c
parent50d6ec552bdd4d9227fe9ed2bac819eced3170ac (diff)
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>
Diffstat (limited to 'drivers/net/sfc/nic.c')
-rw-r--r--drivers/net/sfc/nic.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/sfc/nic.c b/drivers/net/sfc/nic.c
index a577be227862..db44224ed2ca 100644
--- a/drivers/net/sfc/nic.c
+++ b/drivers/net/sfc/nic.c
@@ -1576,6 +1576,8 @@ void efx_nic_init_common(struct efx_nic *efx)
1576 EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_SOFT_EVT_EN, 1); 1576 EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_SOFT_EVT_EN, 1);
1577 /* Prefetch threshold 2 => fetch when descriptor cache half empty */ 1577 /* Prefetch threshold 2 => fetch when descriptor cache half empty */
1578 EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_THRESHOLD, 2); 1578 EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_THRESHOLD, 2);
1579 /* Disable hardware watchdog which can misfire */
1580 EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_WD_TMR, 0x3fffff);
1579 /* Squash TX of packets of 16 bytes or less */ 1581 /* Squash TX of packets of 16 bytes or less */
1580 if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) 1582 if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
1581 EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1); 1583 EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1);