pci_get_capability
if (pci_get_capability(pa->pa_pc, pa->pa_tag, PCI_CAP_PCIEXPRESS,
err = pci_get_capability(sc->sc_pct, sc->sc_pcitag,
err = pci_get_capability(sc->sc_pct, sc->sc_pcitag,
error = pci_get_capability(sc->sc_pct, sc->sc_pcitag,