nvme_getlog_ioctl
int nvme_getlog_ioctl(nvme_softc_t *sc, nvme_getlog_ioctl_t *ioc);
error = nvme_getlog_ioctl(sc, (void *)ap->a_data);
#define NVMEIOCGETLOG _IOWR('O', 0, struct nvme_getlog_ioctl)