EXT_DEVICEDATA
out_size = sizeof (EXT_DEVICEDATA);
EXT_DEVICEDATA dd = {0};
EXT_DEVICEDATA *uddp;
rlen = sizeof (EXT_DEVICEDATA) - sizeof (EXT_DEVICEDATAENTRY);
rlen = (uint32_t)(sizeof (EXT_DEVICEDATA) +
uddp = (EXT_DEVICEDATA *)(uintptr_t)cmd->ResponseAdr;
sizeof (EXT_DEVICEDATA) - sizeof (EXT_DEVICEDATAENTRY), mode);