NVME_CSTS_RDY
printf("%s: rdy %u\n", DEVNAME(sc), r4 & NVME_CSTS_RDY);
while ((nvme_read4(sc, NVME_CSTS) & NVME_CSTS_RDY) != rdy) {
if (ISSET(csts, NVME_CSTS_RDY))
return nvme_ready(sc, NVME_CSTS_RDY);
if (!ISSET(csts, NVME_CSTS_RDY)) {
error = nvme_ready(sc, NVME_CSTS_RDY);
if (!ISSET(csts, NVME_CSTS_RDY))