Enable survivability mode if supported and configfs attribute is set.
Enabling survivability mode manually is useful in cases where pcode does
not detect failure, validation and for IFR (in-field-repair).
To set configfs survivability mode attribute for a device
echo 1 > /sys/kernel/config/xe/0000:03:00.0/survivability_mode
The card enters survivability mode if supported
v2: add a log if survivability mode is enabled for unsupported
platforms (Rodrigo)
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250407051414.1651616-4-riana.tauro@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Registers a configfs subsystem called 'xe' that creates a
directory in the mounted configfs directory (/sys/kernel/config)
Userspace can then create the device that has to be configured
under the xe directory
mkdir /sys/kernel/config/xe/0000:03:00.0
The device created will have the following attributes to be
configured
/sys/kernel/config/xe/
.. 0000:03:00.0/
... survivability_mode
v2: fix kernel-doc
fix return value (Lucas)
v3: fix kernel-doc (Lucas)
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250407051414.1651616-2-riana.tauro@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
