pci_mech1_getw
pci_getw_func = pci_mech1_getw;
pci_getw_func = pci_mech1_getw;
val = pci_mech1_getw(bus, device, function, reg);
val = pci_mech1_getw(bus, device, function, reg);
VendorID = pci_mech1_getw(BusNo, DeviceNo, FunctionNo,
DeviceID = pci_mech1_getw(BusNo, DeviceNo, FunctionNo,
extern uint16_t pci_mech1_getw(int bus, int dev, int func, int reg);