pcibios_read_config_dword
pcibios_read_config_dword(pci->bus, pci->devfn, PCIPM, &tmp);
pcibios_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l);
pcibios_read_config_dword(bus, devfn, PCI_REVISION, &l);
pcibios_read_config_dword(bus, devfn,
pcibios_read_config_dword(bus, devfn,
pcibios_read_config_dword(bus, devfn, reg, &ioaddr);
extern int pcibios_read_config_dword(unsigned int bus, unsigned int device_fn, unsigned int where, uint32_t *value);
return pcibios_read_config_dword(dev->bus, dev->devfn, where, value);