ddi_as_handle_t
ddi_as_handle_t as;
devmap_setup(dev_t dev, offset_t off, ddi_as_handle_t as, caddr_t *addrp,
ddi_devmap_segmap(dev_t dev, off_t off, ddi_as_handle_t as, caddr_t *addrp,
ddi_devmap_segmap(dev_t dev, off_t off, ddi_as_handle_t as, caddr_t *addrp,
static int xenbusdrv_segmap(dev_t, off_t, ddi_as_handle_t, caddr_t *, off_t,
xenbusdrv_segmap(dev_t dev, off_t off, ddi_as_handle_t as, caddr_t *addrp,