windows-server-2003/base/pnp/tools/pcisim/softpci/sys/pcipath.h

PWCHAR
SoftPCIGetNextSlotFromPath(
    IN PWCHAR PciPath,
    OUT PSOFTPCI_SLOT Slot
    );

USHORT
SoftPCIGetTargetSlotFromPath(
    IN PWCHAR PciPath
    );