NVME_REG_ASQ
writeq(funq->sq_dma_addr, fdev->bar + NVME_REG_ASQ);
*(u64 *)(buf + NVME_REG_ASQ) = readq(bar + NVME_REG_ASQ);
writeq(anv->adminq.sq_dma_addr, anv->mmio_nvme + NVME_REG_ASQ);
lo_hi_writeq(nvmeq->sq_dma_addr, dev->bar + NVME_REG_ASQ);
asq = nvmet_pci_epf_bar_read64(ctrl, NVME_REG_ASQ);