pcicfg_unused_space
unused = pcicfg_unused_space(&entry->io_hole, &len);
unused = pcicfg_unused_space(&entry->mem_hole, &len);
unused = pcicfg_unused_space(&entry->pf_mem_hole, &len);
static uint64_t pcicfg_unused_space(hole_t *, uint32_t *);
unused = pcicfg_unused_space(&entry->io_hole, &len);
unused = pcicfg_unused_space(&entry->mem_hole, &len);
static uint64_t pcicfg_unused_space(hole_t *, uint32_t *);