PCI_MSI_MC
sc->bge_msicap + PCI_MSI_MC);
sc->bge_msicap + PCI_MSI_MC,
psc->sc_msi_off + PCI_MSI_MC);
pci_conf_write(psc->sc_pc, psc->sc_tag, psc->sc_msi_off + PCI_MSI_MC,
psc->sc_msi_off + PCI_MSI_MC);
pci_conf_write(psc->sc_pc, psc->sc_tag, psc->sc_msi_off + PCI_MSI_MC,
off + PCI_MSI_MC, pd->pd_msi_mc);
pci_conf_write(pc, tag, off + PCI_MSI_MC,