libnvme(2) API Manual libnvme(2)

enum nvme_cmbsz - This field indicates the controller memory buffer size

enum nvme_cmbsz {
NVME_CMBSZ_SQS_SHIFT ,
NVME_CMBSZ_CQS_SHIFT ,
NVME_CMBSZ_LISTS_SHIFT ,
NVME_CMBSZ_RDS_SHIFT ,
NVME_CMBSZ_WDS_SHIFT ,
NVME_CMBSZ_SZU_SHIFT ,
NVME_CMBSZ_SZ_SHIFT ,
NVME_CMBSZ_SQS_MASK ,
NVME_CMBSZ_CQS_MASK ,
NVME_CMBSZ_LISTS_MASK ,
NVME_CMBSZ_RDS_MASK ,
NVME_CMBSZ_WDS_MASK ,
NVME_CMBSZ_SZU_MASK ,
NVME_CMBSZ_SZ_MASK ,
NVME_CMBSZ_SZU_4K ,
NVME_CMBSZ_SZU_64K ,
NVME_CMBSZ_SZU_1M ,
NVME_CMBSZ_SZU_16M ,
NVME_CMBSZ_SZU_256M ,
NVME_CMBSZ_SZU_4G ,
NVME_CMBSZ_SZU_64G

};

Shift amount to get the submission queue support
Shift amount to get the completion queue support
Shift amount to get the PLP SGL list support
Shift amount to get the read data support
Shift amount to get the write data support
Shift amount to get the size units
Shift amount to get the size
Mask to get the submission queue support
Mask to get the completion queue support
Mask to get the PLP SGL list support
Mask to get the read data support
Mask to get the write data support
Mask to get the size units
Mask to get the size
4 KiB
64 KiB
1 MiB
16 MiB
256 MiB
4 GiB
64 GiB
enum nvme_cmbsz January 2025