pci_ht_map_msi
pci_ht_map_msi(hostb, *addr);
pci_ht_map_msi(child, address);
pci_ht_map_msi(child, address);
pci_ht_map_msi(child, 0);
pci_ht_map_msi(pcib, *addr);
void pci_ht_map_msi(device_t dev, uint64_t addr);
pci_ht_map_msi(hostb, *addr);