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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2009-07-23 18:08:35 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-07-26 09:46:49 -0700 |
| commit | 009bc06e5311b48c77b7708d9e226ae0f110373a (patch) | |
| tree | fceeade485befdbda8047d14bb59c9c0b0b0dad8 /drivers/net/igb/igb_main.c | |
| parent | 12645a196eccb9209f88915f56a686086dea1a16 (diff) | |
| download | lwn-009bc06e5311b48c77b7708d9e226ae0f110373a.tar.gz lwn-009bc06e5311b48c77b7708d9e226ae0f110373a.zip | |
igb: add completion timeout workaround for 82575/82576
The 82575 and 82576 hardware can both experience data corruption issues if
a pci-e completion arrives after the timeout value. In order to avoid this
we need to increase the timeout value while pci-e master is disabled.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/igb/igb_main.c')
| -rw-r--r-- | drivers/net/igb/igb_main.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 39b3b6aa650b..2cb546078c52 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -5029,6 +5029,34 @@ static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) } } +s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) +{ + struct igb_adapter *adapter = hw->back; + u16 cap_offset; + + cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); + if (!cap_offset) + return -E1000_ERR_CONFIG; + + pci_read_config_word(adapter->pdev, cap_offset + reg, value); + + return 0; +} + +s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) +{ + struct igb_adapter *adapter = hw->back; + u16 cap_offset; + + cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); + if (!cap_offset) + return -E1000_ERR_CONFIG; + + pci_write_config_word(adapter->pdev, cap_offset + reg, *value); + + return 0; +} + static void igb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) { |