PCIR_SUBCLASS
pci_host_read_config(sel, PCIR_SUBCLASS, 1) ==
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_BRIDGE_ISA);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_STORAGE_SATA);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_NETWORK_ETHERNET);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_DISPLAY_VGA);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_MULTIMEDIA_HDA);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_BRIDGE_HOST);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_STORAGE_NVM);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_SIMPLECOMM_UART);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_INPUTDEV_OTHER);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_SERIALBUS_USB);