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e1000: add PCI-E capability detection code

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Add code to display the detected PCI-E bus width.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Esse commit está contido em:
Jeff Kirsher
2006-09-27 12:53:57 -07:00
commit de Auke Kok
pai 61c2505fd5
commit caeccb682a
3 arquivos alterados com 38 adições e 7 exclusões
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23
drivers/net/e1000/e1000_hw.c
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@@ -6556,6 +6556,8 @@ e1000_tbi_adjust_stats(struct e1000_hw *hw,
void
e1000_get_bus_info(struct e1000_hw *hw)
{
int32_t ret_val;
uint16_t pci_ex_link_status;
uint32_t status;
switch (hw->mac_type) {
@@ -6565,18 +6567,25 @@ e1000_get_bus_info(struct e1000_hw *hw)
hw->bus_speed = e1000_bus_speed_unknown;
hw->bus_width = e1000_bus_width_unknown;
break;
case e1000_82571:
case e1000_82572:
case e1000_82573:
hw->bus_type = e1000_bus_type_pci_express;
hw->bus_speed = e1000_bus_speed_2500;
hw->bus_width = e1000_bus_width_pciex_1;
break;
case e1000_82571:
case e1000_ich8lan:
case e1000_80003es2lan:
hw->bus_type = e1000_bus_type_pci_express;
hw->bus_speed = e1000_bus_speed_2500;
hw->bus_width = e1000_bus_width_pciex_4;
ret_val = e1000_read_pcie_cap_reg(hw,
PCI_EX_LINK_STATUS,
&pci_ex_link_status);
if (ret_val)
hw->bus_width = e1000_bus_width_unknown;
else
hw->bus_width = (pci_ex_link_status & PCI_EX_LINK_WIDTH_MASK) >>
PCI_EX_LINK_WIDTH_SHIFT;
break;
case e1000_ich8lan:
hw->bus_type = e1000_bus_type_pci_express;
hw->bus_speed = e1000_bus_speed_2500;
hw->bus_width = e1000_bus_width_pciex_1;
break;
default:
status = E1000_READ_REG(hw, STATUS);