forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
233 lines
7.4 KiB
233 lines
7.4 KiB
For all of the nmem device attributes under ``nfit/*``, see the 'NVDIMM Firmware |
|
Interface Table (NFIT)' section in the ACPI specification |
|
(http://www.uefi.org/specifications) for more details. |
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/serial |
|
Date: Jun, 2015 |
|
KernelVersion: v4.2 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Serial number of the NVDIMM (non-volatile dual in-line |
|
memory module), assigned by the module vendor. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/handle |
|
Date: Apr, 2015 |
|
KernelVersion: v4.2 |
|
Contact: [email protected] |
|
Description: |
|
(RO) The address (given by the _ADR object) of the device on its |
|
parent bus of the NVDIMM device containing the NVDIMM region. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/device |
|
Date: Apr, 2015 |
|
KernelVersion: v4.1 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Device id for the NVDIMM, assigned by the module vendor. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/rev_id |
|
Date: Jun, 2015 |
|
KernelVersion: v4.2 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Revision of the NVDIMM, assigned by the module vendor. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/phys_id |
|
Date: Apr, 2015 |
|
KernelVersion: v4.2 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Handle (i.e., instance number) for the SMBIOS (system |
|
management BIOS) Memory Device structure describing the NVDIMM |
|
containing the NVDIMM region. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/flags |
|
Date: Jun, 2015 |
|
KernelVersion: v4.2 |
|
Contact: [email protected] |
|
Description: |
|
(RO) The flags in the NFIT memory device sub-structure indicate |
|
the state of the data on the nvdimm relative to its energy |
|
source or last "flush to persistence". |
|
|
|
The attribute is a translation of the 'NVDIMM State Flags' field |
|
in section 5.2.25.3 'NVDIMM Region Mapping' Structure of the |
|
ACPI specification 6.2. |
|
|
|
The health states are "save_fail", "restore_fail", "flush_fail", |
|
"not_armed", "smart_event", "map_fail" and "smart_notify". |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/format |
|
What: /sys/bus/nd/devices/nmemX/nfit/format1 |
|
What: /sys/bus/nd/devices/nmemX/nfit/formats |
|
Date: Apr, 2016 |
|
KernelVersion: v4.7 |
|
Contact: [email protected] |
|
Description: |
|
(RO) The interface codes indicate support for persistent memory |
|
mapped directly into system physical address space and / or a |
|
block aperture access mechanism to the NVDIMM media. |
|
The 'formats' attribute displays the number of supported |
|
interfaces. |
|
|
|
This layout is compatible with existing libndctl binaries that |
|
only expect one code per-dimm as they will ignore |
|
nmemX/nfit/formats and nmemX/nfit/formatN. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/vendor |
|
Date: Apr, 2016 |
|
KernelVersion: v4.7 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Vendor id of the NVDIMM. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/dsm_mask |
|
Date: May, 2016 |
|
KernelVersion: v4.7 |
|
Contact: [email protected] |
|
Description: |
|
(RO) The bitmask indicates the supported device specific control |
|
functions relative to the NVDIMM command family supported by the |
|
device |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/family |
|
Date: Apr, 2016 |
|
KernelVersion: v4.7 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Displays the NVDIMM family command sets. Values |
|
0, 1, 2 and 3 correspond to NVDIMM_FAMILY_INTEL, |
|
NVDIMM_FAMILY_HPE1, NVDIMM_FAMILY_HPE2 and NVDIMM_FAMILY_MSFT |
|
respectively. |
|
|
|
See the specifications for these command families here: |
|
http://pmem.io/documents/NVDIMM_DSM_Interface-V1.6.pdf |
|
https://github.com/HewlettPackard/hpe-nvm/blob/master/Documentation/ |
|
https://msdn.microsoft.com/library/windows/hardware/mt604741" |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/id |
|
Date: Apr, 2016 |
|
KernelVersion: v4.7 |
|
Contact: [email protected] |
|
Description: |
|
(RO) ACPI specification 6.2 section 5.2.25.9, defines an |
|
identifier for an NVDIMM, which refelects the id attribute. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/subsystem_vendor |
|
Date: Apr, 2016 |
|
KernelVersion: v4.7 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Sub-system vendor id of the NVDIMM non-volatile memory |
|
subsystem controller. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/subsystem_rev_id |
|
Date: Apr, 2016 |
|
KernelVersion: v4.7 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Sub-system revision id of the NVDIMM non-volatile memory subsystem |
|
controller, assigned by the non-volatile memory subsystem |
|
controller vendor. |
|
|
|
|
|
What: /sys/bus/nd/devices/nmemX/nfit/subsystem_device |
|
Date: Apr, 2016 |
|
KernelVersion: v4.7 |
|
Contact: [email protected] |
|
Description: |
|
(RO) Sub-system device id for the NVDIMM non-volatile memory |
|
subsystem controller, assigned by the non-volatile memory |
|
subsystem controller vendor. |
|
|
|
|
|
What: /sys/bus/nd/devices/ndbusX/nfit/revision |
|
Date: Jun, 2015 |
|
KernelVersion: v4.2 |
|
Contact: [email protected] |
|
Description: |
|
(RO) ACPI NFIT table revision number. |
|
|
|
|
|
What: /sys/bus/nd/devices/ndbusX/nfit/scrub |
|
Date: Sep, 2016 |
|
KernelVersion: v4.9 |
|
Contact: [email protected] |
|
Description: |
|
(RW) This shows the number of full Address Range Scrubs (ARS) |
|
that have been completed since driver load time. Userspace can |
|
wait on this using select/poll etc. A '+' at the end indicates |
|
an ARS is in progress |
|
|
|
Writing a value of 1 triggers an ARS scan. |
|
|
|
|
|
What: /sys/bus/nd/devices/ndbusX/nfit/hw_error_scrub |
|
Date: Sep, 2016 |
|
KernelVersion: v4.9 |
|
Contact: [email protected] |
|
Description: |
|
(RW) Provides a way to toggle the behavior between just adding |
|
the address (cache line) where the MCE happened to the poison |
|
list and doing a full scrub. The former (selective insertion of |
|
the address) is done unconditionally. |
|
|
|
This attribute can have the following values written to it: |
|
|
|
'0': Switch to the default mode where an exception will only |
|
insert the address of the memory error into the poison and |
|
badblocks lists. |
|
'1': Enable a full scrub to happen if an exception for a memory |
|
error is received. |
|
|
|
|
|
What: /sys/bus/nd/devices/ndbusX/nfit/dsm_mask |
|
Date: Jun, 2017 |
|
KernelVersion: v4.13 |
|
Contact: [email protected] |
|
Description: |
|
(RO) The bitmask indicates the supported bus specific control |
|
functions. See the section named 'NVDIMM Root Device _DSMs' in |
|
the ACPI specification. |
|
|
|
What: /sys/bus/nd/devices/ndbusX/nfit/firmware_activate_noidle |
|
Date: Apr, 2020 |
|
KernelVersion: v5.8 |
|
Contact: [email protected] |
|
Description: |
|
(RW) The Intel platform implementation of firmware activate |
|
support exposes an option let the platform force idle devices in |
|
the system over the activation event, or trust that the OS will |
|
do it. The safe default is to let the platform force idle |
|
devices since the kernel is already in a suspend state, and on |
|
the chance that a driver does not properly quiesce bus-mastering |
|
after a suspend callback the platform will handle it. However, |
|
the activation might abort if, for example, platform firmware |
|
determines that the activation time exceeds the max PCI-E |
|
completion timeout. Since the platform does not know whether the |
|
OS is running the activation from a suspend context it aborts, |
|
but if the system owner trusts driver suspend callback to be |
|
sufficient then 'firmware_activation_noidle' can be |
|
enabled to bypass the activation abort. |
|
|
|
What: /sys/bus/nd/devices/regionX/nfit/range_index |
|
Date: Jun, 2015 |
|
KernelVersion: v4.2 |
|
Contact: [email protected] |
|
Description: |
|
(RO) A unique number provided by the BIOS to identify an address |
|
range. Used by NVDIMM Region Mapping Structure to uniquely refer |
|
to this structure. Value of 0 is reserved and not used as an |
|
index.
|
|
|