PCI_MSIX_MD
bus_space_write_4(memt, memh, PCI_MSIX_MD(entry), idtvec);
bus_space_write_4(memt, memh, PCI_MSIX_MD(vec), data);
bus_space_write_4(memt, memh, PCI_MSIX_MD(vec), data);
bus_space_write_4(memt, memh, PCI_MSIX_MD(vec), data);
bus_space_write_4(memt, memh, PCI_MSIX_MD(vec), data);
table[i].mv_md = bus_space_read_4(memt, memh, PCI_MSIX_MD(i));
bus_space_write_4(memt, memh, PCI_MSIX_MD(i), table[i].mv_md);