I have the same XPS 9310 with 5.11.0-34-generic #36-Ubuntu SMP Thu Aug 26 19:22:09 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
# tree /sys/bus/pci/devices/0000\:00\:04.0 /sys/bus/pci/devices/0000:00:04.0
... ... ├── uevent ├── vendor └── workload_request ├── workload_available_types └── workload_type
I have the same XPS 9310 with
5.11.0-34-generic #36-Ubuntu SMP Thu Aug 26 19:22:09 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
# tree /sys/bus/ pci/devices/ 0000\:00\ :04.0 pci/devices/ 0000:00: 04.0
/sys/bus/
... available_ types
...
├── uevent
├── vendor
└── workload_request
├── workload_
└── workload_type