i80321_pci_decompose_tag
i80321_pci_decompose_tag(sc, tag, &ps->ps_b, &ps->ps_d, &ps->ps_f);
void i80321_pci_decompose_tag(void *, pcitag_t, int *, int *,
pc->pc_decompose_tag = i80321_pci_decompose_tag;