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amd-xgbe: Check for Tx hardware queue flushing support 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/amd/xgbe/xgbe-dev.c
View File

@ -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);

2
drivers/net/ethernet/amd/xgbe/xgbe-drv.c
View File

@ -361,6 +361,8 @@ void xgbe_get_all_hw_features(struct xgbe_prv_data *pdata)
memset(hw_feat, 0, sizeof(*hw_feat));
hw_feat->version = XGMAC_IOREAD(pdata, MAC_VR);
/* Hardware feature register 0 */
hw_feat->gmii = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, GMIISEL);
hw_feat->vlhash = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, VLHASH);

7
drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
View File

@ -361,15 +361,16 @@ static void xgbe_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct xgbe_prv_data *pdata = netdev_priv(netdev);
struct xgbe_hw_features *hw_feat = &pdata->hw_feat;
strlcpy(drvinfo->driver, XGBE_DRV_NAME, sizeof(drvinfo->driver));
strlcpy(drvinfo->version, XGBE_DRV_VERSION, sizeof(drvinfo->version));
strlcpy(drvinfo->bus_info, dev_name(pdata->dev),
sizeof(drvinfo->bus_info));
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d.%d.%d",
XGMAC_IOREAD_BITS(pdata, MAC_VR, USERVER),
XGMAC_IOREAD_BITS(pdata, MAC_VR, DEVID),
XGMAC_IOREAD_BITS(pdata, MAC_VR, SNPSVER));
XGMAC_GET_BITS(hw_feat->version, MAC_VR, USERVER),
XGMAC_GET_BITS(hw_feat->version, MAC_VR, DEVID),
XGMAC_GET_BITS(hw_feat->version, MAC_VR, SNPSVER));
drvinfo->n_stats = XGBE_STATS_COUNT;
}

3
drivers/net/ethernet/amd/xgbe/xgbe.h
View File

@ -526,6 +526,9 @@ struct xgbe_desc_if {
* or configurations are present in the device.
*/
struct xgbe_hw_features {
/* HW Version */
unsigned int version;
/* HW Feature Register0 */
unsigned int gmii; /* 1000 Mbps support */
unsigned int vlhash; /* VLAN Hash Filter */