NVME_REG_ACQ
writeq(funq->cq_dma_addr, fdev->bar + NVME_REG_ACQ);
return NVME_REG_ACQ + sizeof(u64);
*(u64 *)(buf + NVME_REG_ACQ) = readq(bar + NVME_REG_ACQ);
writeq(anv->adminq.cq_dma_addr, anv->mmio_nvme + NVME_REG_ACQ);
lo_hi_writeq(nvmeq->cq_dma_addr, dev->bar + NVME_REG_ACQ);
acq = nvmet_pci_epf_bar_read64(ctrl, NVME_REG_ACQ);