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Diffstat (limited to 'include/uapi/drm/i915_drm.h')
-rw-r--r--include/uapi/drm/i915_drm.h15
1 files changed, 13 insertions, 2 deletions
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 52051d24d89d..3a73f5316766 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -126,6 +126,18 @@ enum drm_i915_gem_engine_class {
I915_ENGINE_CLASS_INVALID = -1
};
+/*
+ * There may be more than one engine fulfilling any role within the system.
+ * Each engine of a class is given a unique instance number and therefore
+ * any engine can be specified by its class:instance tuplet. APIs that allow
+ * access to any engine in the system will use struct i915_engine_class_instance
+ * for this identification.
+ */
+struct i915_engine_class_instance {
+ __u16 engine_class; /* see enum drm_i915_gem_engine_class */
+ __u16 engine_instance;
+};
+
/**
* DOC: perf_events exposed by i915 through /sys/bus/event_sources/drivers/i915
*
@@ -1525,8 +1537,7 @@ struct drm_i915_gem_context_param_sseu {
/*
* Engine class & instance to be configured or queried.
*/
- __u16 engine_class;
- __u16 engine_instance;
+ struct i915_engine_class_instance engine;
/*
* Unused for now. Must be cleared to zero.