[PATCH 1/2] drm/i915/guc: Add GuC method to determine if submission is active.

[don.hiatt at intel.com]

From: Don Hiatt <don.hiatt at intel.com>

Add intel_guc_submission_is_enabled() function to determine if
GuC submission is active. Based on code by Michal Wajdeczko.

Signed-off-by: Don Hiatt <don.hiatt at intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c |  2 +-
 drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h |  1 +
 drivers/gpu/drm/i915/i915_drv.h                   | 14 ++++++++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 2498c55e0ea5..0aaef7c07879 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -1081,7 +1081,7 @@ static void guc_interrupts_release(struct intel_gt *gt)
 	rps->pm_intrmsk_mbz &= ~ARAT_EXPIRED_INTRMSK;
 }
 
-static void guc_set_default_submission(struct intel_engine_cs *engine)
+void guc_set_default_submission(struct intel_engine_cs *engine)
 {
 	/*
 	 * We inherit a bunch of functions from execlists that we'd like
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
index 54d716828352..a0132f061ebc 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
@@ -63,5 +63,6 @@ void intel_guc_submission_disable(struct intel_guc *guc);
 void intel_guc_submission_fini(struct intel_guc *guc);
 int intel_guc_preempt_work_create(struct intel_guc *guc);
 void intel_guc_preempt_work_destroy(struct intel_guc *guc);
+void guc_set_default_submission(struct intel_engine_cs *engine);
 
 #endif
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a22d969cb352..d54a5cba0745 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -78,8 +78,10 @@
 
 #include "gt/intel_lrc.h"
 #include "gt/intel_engine.h"
+#include "gt/intel_gt.h"
 #include "gt/intel_gt_types.h"
 #include "gt/intel_workarounds.h"
+#include "gt/uc/intel_guc_submission.h"
 #include "gt/uc/intel_uc.h"
 
 #include "intel_device_info.h"
@@ -2028,4 +2030,16 @@ i915_coherent_map_type(struct drm_i915_private *i915)
 	return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
 }
 
+static inline bool intel_guc_submission_is_enabled(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+
+	for_each_engine(engine, gt, id)
+		return engine->set_default_submission ==
+			guc_set_default_submission;
+	return false;
+}
+
 #endif
-- 
2.20.1