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igb: add completion timeout workaround for 82575/82576

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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>
This commit is contained in:
Alexander Duyck
2009-07-23 18:08:35 +00:00
committed by David S. Miller
parent 12645a196e
commit 009bc06e53
6 changed files with 98 additions and 15 deletions
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28
drivers/net/igb/igb_main.c
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@@ -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)
{