Some of the CCS engines are disabled. They should not be listed
in the uabi_engine list, that is the list of engines that the
user can see.
Fixes: d2eae8e98d59 ("drm/i915/dg2: Drop force_probe requirement")
Requires: 4e4f77d74878 ("drm/i915/gt: Refactor uabi engine class/instance list creation")
Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_engine_user.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c
index cf8f24ad88f6..ec5bcd1c1ec4 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_user.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c
@@ -244,6 +244,18 @@ void intel_engines_driver_register(struct drm_i915_private *i915)
if (uabi_class > I915_LAST_UABI_ENGINE_CLASS)
continue;
+ /*
+ * If the CCS engine is fused off, the corresponding bit
+ * in the engine mask is disabled. Do not expose it
+ * to the user.
+ *
+ * By default at least one engine is enabled (check
+ * the engine_mask_apply_compute_fuses() function.
+ */
+ if (!(engine->gt->info.engine_mask &
+ BIT(_CCS(engine->uabi_instance))))
+ continue;
+
GEM_BUG_ON(uabi_class >=
ARRAY_SIZE(i915->engine_uabi_class_count));
i915->engine_uabi_class_count[uabi_class]++;
--
2.43.0
