pq3pci_bst
struct pq3pci_bst sc_pci_io_bst;
struct pq3pci_bst sc_pci_mem_bst;
struct pq3pci_bst *bs = io_win ? &sc->sc_pci_io_bst : &sc->sc_pci_mem_bst;
pq3pci_owin_init(struct pq3pci_softc *sc, struct pq3pci_bst *bs, bool io_win)