device_attach
DEVMETHOD(device_attach, ixpqmgr_attach),
device_attach(2, 0, -1); /* HARDDISK UNIT 0 */
device_attach(NVSRAM_BOOTDEV_FLOPPYDISK, -1, -1);
device_attach(NVSRAM_BOOTDEV_HARDDISK, -1, -1);
device_attach(NVSRAM_BOOTDEV_HARDDISK, disk, partition);
device_attach(-1, -1, -1);
if (!device_attach(-1, -1, i))
bool device_attach(int, int, int);
DEVMETHOD(device_attach, bktr_attach),
DEVMETHOD(device_attach, ena_attach),