[igt-dev] [PATCH v19 3/6] lib: igt_gt: add eb flags to class helper

[Andi Shyti <andi.shyti@intel.com>]

we have a "class/instance to eb flags" helper but not the
opposite, add it.

Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@intel.com>
---
 lib/igt_gt.c | 18 ++++++++++++++++++
 lib/igt_gt.h |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/lib/igt_gt.c b/lib/igt_gt.c
index 5999524326d0..8cd58f7afbfd 100644
--- a/lib/igt_gt.c
+++ b/lib/igt_gt.c
@@ -41,6 +41,7 @@
 #include "intel_reg.h"
 #include "intel_chipset.h"
 #include "igt_dummyload.h"
+#include "i915/gem_engine_topology.h"
 
 /**
  * SECTION:igt_gt
@@ -586,6 +587,23 @@ const struct intel_execution_engine2 intel_execution_engines2[] = {
 	{ }
 };
 
+int gem_eb_to_class(unsigned int flags)
+{
+	switch (flags & 0x3f) {
+		case I915_EXEC_DEFAULT:
+		case I915_EXEC_RENDER:
+			return I915_ENGINE_CLASS_RENDER;
+		case I915_EXEC_BLT:
+			return I915_ENGINE_CLASS_COPY;
+		case I915_EXEC_BSD:
+			return I915_ENGINE_CLASS_VIDEO;
+		case I915_EXEC_VEBOX:
+			return I915_ENGINE_CLASS_VIDEO_ENHANCE;
+		default:
+			igt_assert(0);
+	}
+}
+
 unsigned int
 gem_class_instance_to_eb_flags(int gem_fd,
 			       enum drm_i915_gem_engine_class class,
diff --git a/lib/igt_gt.h b/lib/igt_gt.h
index 52b2f1ea95a5..b13062ef7d33 100644
--- a/lib/igt_gt.h
+++ b/lib/igt_gt.h
@@ -99,6 +99,8 @@ extern const struct intel_execution_engine2 {
 	bool is_virtual;
 } intel_execution_engines2[];
 
+int gem_eb_to_class(unsigned int flags);
+
 unsigned int
 gem_class_instance_to_eb_flags(int gem_fd,
 			       enum drm_i915_gem_engine_class class,
-- 
2.20.1

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