drm/xe/vf: Return EOPNOTSUPP for DRM_XE_DEVICE_QUERY_ENGINE_CYCLES if VF

RING_TIMESTAMP registers are not available for VF (Virtual Function)
drivers. Return -EOPNOTSUPP when the DRM_XE_DEVICE_QUERY_ENGINE_CYCLES
ioctl is invoked on a VF device.

Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250205191644.2550879-2-marcin.bernatowicz@linux.intel.com

Author: mbernatowicz

drivers/gpu/drm/xe/xe_query.c

@@ -121,6 +121,9 @@ query_engine_cycles(struct xe_device *xe,
 	struct xe_gt *gt;
 	unsigned int fw_ref;
 
+	if (IS_SRIOV_VF(xe))
+		return -EOPNOTSUPP;
+
 	if (query->size == 0) {
 		query->size = size;
 		return 0;