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amd-xgbe: Check for Tx hardware queue flushing support

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The flushing of the Tx hardware queues is only supported at a certain
level of the hardware.  Retrieve the current version of the hardware
and use that to determine if flushing is supported.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lendacky, Thomas
2014-08-29 13:16:50 -05:00
committed by David S. Miller
parent e148e1bf6f
commit a9a4a2d9d6
4 changed files with 12 additions and 3 deletions
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3
drivers/net/ethernet/amd/xgbe/xgbe-dev.c
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@@ -1633,6 +1633,9 @@ static int xgbe_flush_tx_queues(struct xgbe_prv_data *pdata)
{
unsigned int i, count;
if (XGMAC_GET_BITS(pdata->hw_feat.version, MAC_VR, SNPSVER) < 0x21)
return 0;
for (i = 0; i < pdata->tx_q_count; i++)
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, FTQ, 1);