diff options
Diffstat (limited to 'drivers/net/ethernet/amd/xgbe/xgbe-dev.c')
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-dev.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c index d5fd49dd25f3..decc1c09a031 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c @@ -524,19 +524,28 @@ static void xgbe_disable_vxlan(struct xgbe_prv_data *pdata) netif_dbg(pdata, drv, pdata->netdev, "VXLAN acceleration disabled\n"); } +static unsigned int xgbe_get_fc_queue_count(struct xgbe_prv_data *pdata) +{ + unsigned int max_q_count = XGMAC_MAX_FLOW_CONTROL_QUEUES; + + /* From MAC ver 30H the TFCR is per priority, instead of per queue */ + if (XGMAC_GET_BITS(pdata->hw_feat.version, MAC_VR, SNPSVER) >= 0x30) + return max_q_count; + else + return min_t(unsigned int, pdata->tx_q_count, max_q_count); +} + static int xgbe_disable_tx_flow_control(struct xgbe_prv_data *pdata) { - unsigned int max_q_count, q_count; unsigned int reg, reg_val; - unsigned int i; + unsigned int i, q_count; /* Clear MTL flow control */ for (i = 0; i < pdata->rx_q_count; i++) XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, EHFC, 0); /* Clear MAC flow control */ - max_q_count = XGMAC_MAX_FLOW_CONTROL_QUEUES; - q_count = min_t(unsigned int, pdata->tx_q_count, max_q_count); + q_count = xgbe_get_fc_queue_count(pdata); reg = MAC_Q0TFCR; for (i = 0; i < q_count; i++) { reg_val = XGMAC_IOREAD(pdata, reg); @@ -553,9 +562,8 @@ static int xgbe_enable_tx_flow_control(struct xgbe_prv_data *pdata) { struct ieee_pfc *pfc = pdata->pfc; struct ieee_ets *ets = pdata->ets; - unsigned int max_q_count, q_count; unsigned int reg, reg_val; - unsigned int i; + unsigned int i, q_count; /* Set MTL flow control */ for (i = 0; i < pdata->rx_q_count; i++) { @@ -579,8 +587,7 @@ static int xgbe_enable_tx_flow_control(struct xgbe_prv_data *pdata) } /* Set MAC flow control */ - max_q_count = XGMAC_MAX_FLOW_CONTROL_QUEUES; - q_count = min_t(unsigned int, pdata->tx_q_count, max_q_count); + q_count = xgbe_get_fc_queue_count(pdata); reg = MAC_Q0TFCR; for (i = 0; i < q_count; i++) { reg_val = XGMAC_IOREAD(pdata, reg); |