[igt-dev] [PATCH v20 4/6] lib: igt_gt: make gem_engine_can_store_dword() check engine class

[Andi Shyti]

From: Andi Shyti <andi.shyti at intel.com>

Engines referred by class and instance are getting more populare,
gem_engine_can_store_dword() should handle the situation.

Suggested-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Signed-off-by: Andi Shyti <andi.shyti at intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 lib/igt_gt.c | 11 ++++++++---
 lib/igt_gt.h |  1 +
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/igt_gt.c b/lib/igt_gt.c
index 8cd58f7afbfd..5d0a8e8060a7 100644
--- a/lib/igt_gt.c
+++ b/lib/igt_gt.c
@@ -557,7 +557,7 @@ const struct intel_execution_engine intel_execution_engines[] = {
 	{ NULL, 0, 0 }
 };
 
-bool gem_can_store_dword(int fd, unsigned int engine)
+bool gem_class_can_store_dword(int fd, int class)
 {
 	uint16_t devid = intel_get_drm_devid(fd);
 	const struct intel_device_info *info = intel_get_device_info(devid);
@@ -569,8 +569,8 @@ bool gem_can_store_dword(int fd, unsigned int engine)
 	if (gen == 3 && (info->is_grantsdale || info->is_alviso))
 		return false; /* only supports physical addresses */
 
-	if (gen == 6 && ((engine & 0x3f) == I915_EXEC_BSD))
-		return false; /* kills the machine! */
+	if (gen == 6 && class == I915_ENGINE_CLASS_VIDEO)
+		return false;
 
 	if (info->is_broadwater)
 		return false; /* Not sure yet... */
@@ -578,6 +578,11 @@ bool gem_can_store_dword(int fd, unsigned int engine)
 	return true;
 }
 
+bool gem_can_store_dword(int fd, unsigned int engine)
+{
+	return gem_class_can_store_dword(fd, gem_eb_to_class(engine));
+}
+
 const struct intel_execution_engine2 intel_execution_engines2[] = {
 	{ "rcs0", I915_ENGINE_CLASS_RENDER, 0 },
 	{ "bcs0", I915_ENGINE_CLASS_COPY, 0 },
diff --git a/lib/igt_gt.h b/lib/igt_gt.h
index b13062ef7d33..af4cc38a1ef7 100644
--- a/lib/igt_gt.h
+++ b/lib/igt_gt.h
@@ -90,6 +90,7 @@ bool gem_ring_is_physical_engine(int fd, unsigned int ring);
 bool gem_ring_has_physical_engine(int fd, unsigned int ring);
 
 bool gem_can_store_dword(int fd, unsigned int engine);
+bool gem_class_can_store_dword(int fd, int class);
 
 extern const struct intel_execution_engine2 {
 	const char *name;
-- 
2.20.1