NVME_REG_DBS
num_dbs = (pci_resource_len(pdev, 0) - NVME_REG_DBS) >>
fdev->dbs = fdev->bar + NVME_REG_DBS;
anv->adminq.sq_db = anv->mmio_nvme + NVME_REG_DBS;
anv->ioq.sq_db = anv->mmio_nvme + NVME_REG_DBS + 8;
return NVME_REG_DBS + ((nr_io_queues + 1) * 8 * dev->db_stride);
dev->dbs = dev->bar + NVME_REG_DBS;
if (nvme_remap_bar(dev, NVME_REG_DBS + 4096))
cq->db = NVME_REG_DBS + (((cqid * 2) + 1) * sizeof(u32));
sq->db = NVME_REG_DBS + (sqid * 2 * sizeof(u32));
reg_size = NVME_REG_DBS + (NVMET_NR_QUEUES * 2 * sizeof(u32));