diff options
Diffstat (limited to 'drivers/net/e1000e/netdev.c')
| -rw-r--r-- | drivers/net/e1000e/netdev.c | 50 |
1 files changed, 44 insertions, 6 deletions
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 1aa4228e860..992b622fe20 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -2290,6 +2290,11 @@ static void e1000_set_itr(struct e1000_adapter *adapter) goto set_itr_now; } + if (adapter->flags2 & FLAG2_DISABLE_AIM) { + new_itr = 0; + goto set_itr_now; + } + adapter->tx_itr = e1000_update_itr(adapter, adapter->tx_itr, adapter->total_tx_packets, @@ -2338,7 +2343,10 @@ set_itr_now: if (adapter->msix_entries) adapter->rx_ring->set_itr = 1; else - ew32(ITR, 1000000000 / (new_itr * 256)); + if (new_itr) + ew32(ITR, 1000000000 / (new_itr * 256)); + else + ew32(ITR, 0); } } @@ -2920,7 +2928,7 @@ static void e1000_configure_rx(struct e1000_adapter *adapter) /* irq moderation */ ew32(RADV, adapter->rx_abs_int_delay); - if (adapter->itr_setting != 0) + if ((adapter->itr_setting != 0) && (adapter->itr != 0)) ew32(ITR, 1000000000 / (adapter->itr * 256)); ctrl_ext = er32(CTRL_EXT); @@ -2965,11 +2973,13 @@ static void e1000_configure_rx(struct e1000_adapter *adapter) * packet size is equal or larger than the specified value (in 8 byte * units), e.g. using jumbo frames when setting to E1000_ERT_2048 */ - if (adapter->flags & FLAG_HAS_ERT) { + if ((adapter->flags & FLAG_HAS_ERT) || + (adapter->hw.mac.type == e1000_pch2lan)) { if (adapter->netdev->mtu > ETH_DATA_LEN) { u32 rxdctl = er32(RXDCTL(0)); ew32(RXDCTL(0), rxdctl | 0x3); - ew32(ERT, E1000_ERT_2048 | (1 << 13)); + if (adapter->flags & FLAG_HAS_ERT) + ew32(ERT, E1000_ERT_2048 | (1 << 13)); /* * With jumbo frames and early-receive enabled, * excessive C-state transition latencies result in @@ -3232,9 +3242,35 @@ void e1000e_reset(struct e1000_adapter *adapter) fc->low_water = 0x05048; fc->pause_time = 0x0650; fc->refresh_time = 0x0400; + if (adapter->netdev->mtu > ETH_DATA_LEN) { + pba = 14; + ew32(PBA, pba); + } break; } + /* + * Disable Adaptive Interrupt Moderation if 2 full packets cannot + * fit in receive buffer and early-receive not supported. + */ + if (adapter->itr_setting & 0x3) { + if (((adapter->max_frame_size * 2) > (pba << 10)) && + !(adapter->flags & FLAG_HAS_ERT)) { + if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { + dev_info(&adapter->pdev->dev, + "Interrupt Throttle Rate turned off\n"); + adapter->flags2 |= FLAG2_DISABLE_AIM; + ew32(ITR, 0); + } + } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { + dev_info(&adapter->pdev->dev, + "Interrupt Throttle Rate turned on\n"); + adapter->flags2 &= ~FLAG2_DISABLE_AIM; + adapter->itr = 20000; + ew32(ITR, 1000000000 / (adapter->itr * 256)); + } + } + /* Allow time for pending master requests to run */ mac->ops.reset_hw(hw); @@ -3553,7 +3589,8 @@ static int e1000_open(struct net_device *netdev) e1000_update_mng_vlan(adapter); /* DMA latency requirement to workaround early-receive/jumbo issue */ - if (adapter->flags & FLAG_HAS_ERT) + if ((adapter->flags & FLAG_HAS_ERT) || + (adapter->hw.mac.type == e1000_pch2lan)) pm_qos_add_request(&adapter->netdev->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); @@ -3662,7 +3699,8 @@ static int e1000_close(struct net_device *netdev) if (adapter->flags & FLAG_HAS_AMT) e1000_release_hw_control(adapter); - if (adapter->flags & FLAG_HAS_ERT) + if ((adapter->flags & FLAG_HAS_ERT) || + (adapter->hw.mac.type == e1000_pch2lan)) pm_qos_remove_request(&adapter->netdev->pm_qos_req); pm_runtime_put_sync(&pdev->dev); |