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| author | Jacob Keller <jacob.e.keller@intel.com> | 2020-03-26 11:37:18 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-26 19:39:26 -0700 |
| commit | dce730f17825f4814649c1ba7970af5737415c78 (patch) | |
| tree | 87bf52152b08b89f93865fc80a5f6610f79d05c3 /Documentation | |
| parent | 3fe0fd531a35c229f8309c8b74ef0226de2626ab (diff) | |
| download | linux-dce730f17825f4814649c1ba7970af5737415c78.tar.gz linux-dce730f17825f4814649c1ba7970af5737415c78.tar.bz2 linux-dce730f17825f4814649c1ba7970af5737415c78.zip | |
ice: add a devlink region for dumping NVM contents
Add a devlink region for exposing the device's Non Volatime Memory flash
contents.
Support the recently added .snapshot operation, enabling userspace to
request a snapshot of the NVM contents via DEVLINK_CMD_REGION_NEW.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/devlink/ice.rst | 26 |
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 |