diff options
| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2010-04-27 03:02:40 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-27 21:53:28 +0200 |
| commit | ff846f52935e6c8dfb0c97df7c2c1bf777454684 (patch) | |
| tree | f7b17c3e0e76f221809e509b749df6ae5caf868b /drivers/net/igb/e1000_mac.c | |
| parent | ixgbe: fix bug when EITR=0 causing no writebacks (diff) | |
| download | linux-ff846f52935e6c8dfb0c97df7c2c1bf777454684.tar.xz linux-ff846f52935e6c8dfb0c97df7c2c1bf777454684.zip | |
igb: add support for reporting 5GT/s during probe on PCIe Gen2
This change corrects the fact that we were not reporting Gen2 link speeds
when we were in fact connected at Gen2 rates.
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/e1000_mac.c')
| -rw-r--r-- | drivers/net/igb/e1000_mac.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/net/igb/e1000_mac.c b/drivers/net/igb/e1000_mac.c index be8d010e4021..90c5e01e9235 100644 --- a/drivers/net/igb/e1000_mac.c +++ b/drivers/net/igb/e1000_mac.c @@ -53,17 +53,30 @@ s32 igb_get_bus_info_pcie(struct e1000_hw *hw) u16 pcie_link_status; bus->type = e1000_bus_type_pci_express; - bus->speed = e1000_bus_speed_2500; ret_val = igb_read_pcie_cap_reg(hw, - PCIE_LINK_STATUS, - &pcie_link_status); - if (ret_val) + PCI_EXP_LNKSTA, + &pcie_link_status); + if (ret_val) { bus->width = e1000_bus_width_unknown; - else + bus->speed = e1000_bus_speed_unknown; + } else { + switch (pcie_link_status & PCI_EXP_LNKSTA_CLS) { + case PCI_EXP_LNKSTA_CLS_2_5GB: + bus->speed = e1000_bus_speed_2500; + break; + case PCI_EXP_LNKSTA_CLS_5_0GB: + bus->speed = e1000_bus_speed_5000; + break; + default: + bus->speed = e1000_bus_speed_unknown; + break; + } + bus->width = (enum e1000_bus_width)((pcie_link_status & - PCIE_LINK_WIDTH_MASK) >> - PCIE_LINK_WIDTH_SHIFT); + PCI_EXP_LNKSTA_NLW) >> + PCI_EXP_LNKSTA_NLW_SHIFT); + } reg = rd32(E1000_STATUS); bus->func = (reg & E1000_STATUS_FUNC_MASK) >> E1000_STATUS_FUNC_SHIFT; |