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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>
This commit is contained in:
Jeff Kirsher
2006-09-27 12:53:57 -07:00
committed by Auke Kok
parent 61c2505fd5
commit caeccb682a
3 changed files with 38 additions and 7 deletions
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16
drivers/net/e1000/e1000_main.c
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@@ -4473,6 +4473,22 @@ e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
pci_write_config_word(adapter->pdev, reg, *value);
}
int32_t
e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
{
struct e1000_adapter *adapter = hw->back;
uint16_t 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 E1000_SUCCESS;
}
void
e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
{