[PATCH v5 5/9] drm/xe/xe_survivability: Add support for Runtime survivability mode

[Riana Tauro]

On 7/23/2025 7:38 PM, Raag Jadav wrote:
> On Tue, Jul 15, 2025 at 04:17:25PM +0530, Riana Tauro wrote:
>> Certain runtime firmware errors can cause the device to be in a unusable
>> state requiring a firmware flash to restore normal operation.
>> Runtime Survivability Mode indicates firmware flash is necessary by
>> wedging the device and exposing survivability mode sysfs.
>>
>> The below sysfs is an indication that device is in survivability mode
>>
>> /sys/bus/pci/devices/<device>/survivability_mode
> 
> ...
> 
>> +int xe_survivability_mode_runtime_enable(struct xe_device *xe)
>> +{
>> +	struct xe_survivability *survivability = &xe->survivability;
>> +	struct pci_dev *pdev = to_pci_dev(xe->drm.dev);
>> +	int ret;
>> +
>> +	if (!IS_DGFX(xe) || IS_SRIOV_VF(xe) || xe->info.platform < XE_BATTLEMAGE) {
>> +		dev_err(&pdev->dev, "Runtime Survivability Mode not supported\n");
>> +		return -EINVAL;
>> +	}
>> +
>> +	ret = init_survivability_mode(xe);
>> +	if (ret)
>> +		return ret;
>> +
>> +	ret = create_survivability_sysfs(pdev);
>> +	if (ret)
>> +		dev_err(&pdev->dev, "Failed to create survivability mode sysfs\n");
>> +
>> +	survivability->type = XE_SURVIVABILITY_TYPE_RUNTIME;
>> +	dev_err(&pdev->dev, "Runtime Survivability mode enabled\n");
>> +
>> +	xe_device_set_wedged_method(xe, DRM_WEDGE_RECOVERY_VENDOR);
>> +	xe_device_declare_wedged(xe);
>> +	dev_err(&pdev->dev, "Firmware update required, Refer the userspace documentation for more details!\n");
> 
> Do we have it? Or did I miss it somewhere? :D

fwupd currently implements it and they have a generic documentation
and https://github.com/fwupd/fwupd/blob/main/plugins/intel-gsc/README.md 
intel specific. Once the patches are good to merge the dmesg and sysfs 
will be added in the same location by Frank.

I have mentioned "userspace" as there can be other tools in the future 
that might use this. There has to be a message indicating firmware 
update is required.

Thanks
Riana

> 
> Raag