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-rw-r--r--Documentation/networking/devlink/ice.rst26
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/networking/devlink/ice.rst b/Documentation/networking/devlink/ice.rst
index 37fbbd40a5e5..f3d6a3b50342 100644
--- a/Documentation/networking/devlink/ice.rst
+++ b/Documentation/networking/devlink/ice.rst
@@ -69,3 +69,29 @@ The ``ice`` driver reports the following versions
- The version of the DDP package that is active in the device. Note
that both the name (as reported by ``fw.app.name``) and version are
required to uniquely identify the package.
+
+Regions
+=======
+
+The ``ice`` driver enables access to the contents of the Non Volatile Memory
+flash chip via the ``nvm-flash`` region.
+
+Users can request an immediate capture of a snapshot via the
+``DEVLINK_CMD_REGION_NEW``
+
+.. code:: shell
+
+ $ devlink region new pci/0000:01:00.0/nvm-flash snapshot 1
+ $ devlink region dump pci/0000:01:00.0/nvm-flash snapshot 1
+
+ $ devlink region dump pci/0000:01:00.0/nvm-flash snapshot 1
+ 0000000000000000 0014 95dc 0014 9514 0035 1670 0034 db30
+ 0000000000000010 0000 0000 ffff ff04 0029 8c00 0028 8cc8
+ 0000000000000020 0016 0bb8 0016 1720 0000 0000 c00f 3ffc
+ 0000000000000030 bada cce5 bada cce5 bada cce5 bada cce5
+
+ $ devlink region read pci/0000:01:00.0/nvm-flash snapshot 1 address 0
+ length 16
+ 0000000000000000 0014 95dc 0014 9514 0035 1670 0034 db30
+
+ $ devlink region delete pci/0000:01:00.0/nvm-flash snapshot 1