Symbol: PCIM_BAR_IO_SPACE
sys/dev/pci/pcireg.h
220
#define PCI_BAR_IO(x) (((x) & PCIM_BAR_SPACE) == PCIM_BAR_IO_SPACE)
usr.sbin/bhyve/pci_emul.c
909
lobits = PCIM_BAR_IO_SPACE;