diff options
| author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2006-01-12 16:50:51 -0800 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2006-01-17 07:44:50 -0500 |
| commit | f11b7f8535fab0f9196a7387e93dca5deaa5fff2 (patch) | |
| tree | ff4f599bb8d8a7abd6d97d78756a9376f1bf8947 /drivers/net | |
| parent | 4d351858e41145fa236730b7749e3aed18edef43 (diff) | |
[PATCH] e1000: Fix flow control water marks
Fixed flow control water marks based on PBA size.
Store flow control state in original_fc in addition to fc.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 21 | ||||
| -rw-r--r-- | drivers/net/e1000/e1000_param.c | 2 |
2 files changed, 8 insertions, 15 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 4016264a791..cefc7cc092a 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -504,10 +504,8 @@ e1000_down(struct e1000_adapter *adapter) void e1000_reset(struct e1000_adapter *adapter) { - struct net_device *netdev = adapter->netdev; uint32_t pba, manc; uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; - uint16_t fc_low_water_mark = E1000_FC_LOW_DIFF; /* Repartition Pba for greater than 9k mtu * To take effect CTRL.RST is required. @@ -531,15 +529,8 @@ e1000_reset(struct e1000_adapter *adapter) } if((adapter->hw.mac_type != e1000_82573) && - (adapter->netdev->mtu > E1000_RXBUFFER_8192)) { + (adapter->netdev->mtu > E1000_RXBUFFER_8192)) pba -= 8; /* allocate more FIFO for Tx */ - /* send an XOFF when there is enough space in the - * Rx FIFO to hold one extra full size Rx packet - */ - fc_high_water_mark = netdev->mtu + ENET_HEADER_SIZE + - ETHERNET_FCS_SIZE + 1; - fc_low_water_mark = fc_high_water_mark + 8; - } if(adapter->hw.mac_type == e1000_82547) { @@ -553,10 +544,12 @@ e1000_reset(struct e1000_adapter *adapter) E1000_WRITE_REG(&adapter->hw, PBA, pba); /* flow control settings */ - adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) - - fc_high_water_mark; - adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) - - fc_low_water_mark; + /* Set the FC high water mark to 90% of the FIFO size. + * Required to clear last 3 LSB */ + fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; + + adapter->hw.fc_high_water = fc_high_water_mark; + adapter->hw.fc_low_water = fc_high_water_mark - 8; adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; adapter->hw.fc_send_xon = 1; adapter->hw.fc = adapter->hw.original_fc; diff --git a/drivers/net/e1000/e1000_param.c b/drivers/net/e1000/e1000_param.c index b0be7d69af3..133a76b71b9 100644 --- a/drivers/net/e1000/e1000_param.c +++ b/drivers/net/e1000/e1000_param.c @@ -388,7 +388,7 @@ e1000_check_options(struct e1000_adapter *adapter) e1000_validate_option(&fc, &opt, adapter); adapter->hw.fc = adapter->hw.original_fc = fc; } else { - adapter->hw.fc = opt.def; + adapter->hw.fc = adapter->hw.original_fc = opt.def; } } { /* Transmit Interrupt Delay */ |