drm/xe: don't expose the GSCCS to users

The kernel is the only expected user of the GSCCS, so we don't want to
expose it to userspace.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20230817201831.1583172-7-daniele.ceraolospurio@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index 32a5bd9..81281e9 100644 (file)
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -795,6 +795,9 @@ bool xe_hw_engine_is_reserved(struct xe_hw_engine *hwe)
        struct xe_gt *gt = hwe->gt;
        struct xe_device *xe = gt_to_xe(gt);
 
+       if (hwe->class == XE_ENGINE_CLASS_OTHER)
+               return true;
+
        return xe->info.supports_usm && hwe->class == XE_ENGINE_CLASS_COPY &&
                hwe->instance == gt->usm.reserved_bcs_instance;
 }