diff options
Diffstat (limited to 'Documentation/scsi/leapraid.rst')
| -rw-r--r-- | Documentation/scsi/leapraid.rst | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/Documentation/scsi/leapraid.rst b/Documentation/scsi/leapraid.rst index 99930ce2b8d0..d36ff627d9f0 100644 --- a/Documentation/scsi/leapraid.rst +++ b/Documentation/scsi/leapraid.rst @@ -22,6 +22,7 @@ Supported devices Features ======== + - PCIe Gen4 x8 host interface - Support for SAS and SATA devices - RAID levels: 0, 1, 10, 5, 50, 6, 60 @@ -50,16 +51,20 @@ LeapRAID specific disk attributes :: - /sys/class/scsi_disk/host:bus:target:lun/device/sas_device_handle - /sys/class/scsi_disk/host:bus:target:lun/device/ncq_cmd_prio_enable + /sys/block/<disk>/device/sas_device_handle + /sys/block/<disk>/device/sas_ncq_prio_supported + /sys/block/<disk>/device/sas_ncq_prio_enable The read-only attribute "sas_device_handle" represents the disk's device handle, which is a unique identifier maintained by the firmware. -This attribute "ncq_cmd_prio_enable" controls NCQ command priority. A value +The read-only attribute "sas_ncq_prio_supported" reports whether a SATA +device supports NCQ command priority. + +The attribute "sas_ncq_prio_enable" controls NCQ command priority. A value of 0 disables NCQ priority handling for RT-priority I/O. Writing 1 enables NCQ priority handling when the device reports support for the feature through -VPD page 0x89. Unsupported devices keep the effective state at 0. +VPD page 0x89. Writes to unsupported devices fail with an error. LeapRAID module parameters ========================== @@ -100,6 +105,7 @@ in io_uring poll mode. The default value is 0. File Location ============= + The driver source is located at: ``drivers/scsi/leapraid/`` |