PCI_VENDOR_ID
pci_read_config_word(pdev, PCI_VENDOR_ID, &hw->vendor_id);
pcibios_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l);
t4_os_pci_read_cfg2(adapter, PCI_VENDOR_ID, &adapter->params.pci.vendor_id);