[PATCH 06/27] drm/i915/gt: Move engine setup out of set_default_submission

[Chris Wilson]

Now that we no longer switch back and forth between guc and execlists,
we no longer need to restore the backend's vfunc and can leave them set
during initialisation.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 .../drm/i915/gt/intel_execlists_submission.c  | 46 +++++++++----------
 .../gpu/drm/i915/gt/intel_ring_submission.c   |  4 --
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 46 ++++++++-----------
 3 files changed, 42 insertions(+), 54 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 45a8ac152b88..5d824e1cfcba 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -3089,29 +3089,6 @@ static void execlists_set_default_submission(struct intel_engine_cs *engine)
 	engine->submit_request = execlists_submit_request;
 	engine->schedule = i915_schedule;
 	engine->execlists.tasklet.callback = execlists_submission_tasklet;
-
-	engine->reset.prepare = execlists_reset_prepare;
-	engine->reset.rewind = execlists_reset_rewind;
-	engine->reset.cancel = execlists_reset_cancel;
-	engine->reset.finish = execlists_reset_finish;
-
-	engine->park = execlists_park;
-	engine->unpark = NULL;
-
-	engine->flags |= I915_ENGINE_SUPPORTS_STATS;
-	if (!intel_vgpu_active(engine->i915)) {
-		engine->flags |= I915_ENGINE_HAS_SEMAPHORES;
-		if (can_preempt(engine)) {
-			engine->flags |= I915_ENGINE_HAS_PREEMPTION;
-			if (IS_ACTIVE(CONFIG_DRM_I915_TIMESLICE_DURATION))
-				engine->flags |= I915_ENGINE_HAS_TIMESLICES;
-		}
-	}
-
-	if (intel_engine_has_preemption(engine))
-		engine->emit_bb_start = gen8_emit_bb_start;
-	else
-		engine->emit_bb_start = gen8_emit_bb_start_noarb;
 }
 
 static void execlists_shutdown(struct intel_engine_cs *engine)
@@ -3142,6 +3119,14 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine)
 	engine->cops = &execlists_context_ops;
 	engine->request_alloc = execlists_request_alloc;
 
+	engine->reset.prepare = execlists_reset_prepare;
+	engine->reset.rewind = execlists_reset_rewind;
+	engine->reset.cancel = execlists_reset_cancel;
+	engine->reset.finish = execlists_reset_finish;
+
+	engine->park = execlists_park;
+	engine->unpark = NULL;
+
 	engine->emit_flush = gen8_emit_flush_xcs;
 	engine->emit_init_breadcrumb = gen8_emit_init_breadcrumb;
 	engine->emit_fini_breadcrumb = gen8_emit_fini_breadcrumb_xcs;
@@ -3162,6 +3147,21 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine)
 		 * until a more refined solution exists.
 		 */
 	}
+
+	engine->flags |= I915_ENGINE_SUPPORTS_STATS;
+	if (!intel_vgpu_active(engine->i915)) {
+		engine->flags |= I915_ENGINE_HAS_SEMAPHORES;
+		if (can_preempt(engine)) {
+			engine->flags |= I915_ENGINE_HAS_PREEMPTION;
+			if (IS_ACTIVE(CONFIG_DRM_I915_TIMESLICE_DURATION))
+				engine->flags |= I915_ENGINE_HAS_TIMESLICES;
+		}
+	}
+
+	if (intel_engine_has_preemption(engine))
+		engine->emit_bb_start = gen8_emit_bb_start;
+	else
+		engine->emit_bb_start = gen8_emit_bb_start_noarb;
 }
 
 static void logical_ring_default_irqs(struct intel_engine_cs *engine)
diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
index 9c2c605d7a92..3cb2ce503544 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -969,14 +969,10 @@ static void gen6_bsd_submit_request(struct i915_request *request)
 static void i9xx_set_default_submission(struct intel_engine_cs *engine)
 {
 	engine->submit_request = i9xx_submit_request;
-
-	engine->park = NULL;
-	engine->unpark = NULL;
 }
 
 static void gen6_bsd_set_default_submission(struct intel_engine_cs *engine)
 {
-	i9xx_set_default_submission(engine);
 	engine->submit_request = gen6_bsd_submit_request;
 }
 
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 92688a9b6717..2d17e2c69ac3 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -610,33 +610,6 @@ static void guc_set_default_submission(struct intel_engine_cs *engine)
 	engine->submit_request = guc_submit_request;
 	engine->schedule = i915_schedule;
 	engine->execlists.tasklet.callback = guc_submission_tasklet;
-
-	engine->reset.prepare = guc_reset_prepare;
-	engine->reset.rewind = guc_reset_rewind;
-	engine->reset.cancel = guc_reset_cancel;
-	engine->reset.finish = guc_reset_finish;
-
-	engine->flags |= I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
-	engine->flags |= I915_ENGINE_HAS_PREEMPTION;
-
-	/*
-	 * TODO: GuC supports timeslicing and semaphores as well, but they're
-	 * handled by the firmware so some minor tweaks are required before
-	 * enabling.
-	 *
-	 * engine->flags |= I915_ENGINE_HAS_TIMESLICES;
-	 * engine->flags |= I915_ENGINE_HAS_SEMAPHORES;
-	 */
-
-	engine->emit_bb_start = gen8_emit_bb_start;
-
-	/*
-	 * For the breadcrumb irq to work we need the interrupts to stay
-	 * enabled. However, on all platforms on which we'll have support for
-	 * GuC submission we don't allow disabling the interrupts at runtime, so
-	 * we're always safe with the current flow.
-	 */
-	GEM_BUG_ON(engine->irq_enable || engine->irq_disable);
 }
 
 static void guc_release(struct intel_engine_cs *engine)
@@ -658,6 +631,11 @@ static void guc_default_vfuncs(struct intel_engine_cs *engine)
 	engine->cops = &guc_context_ops;
 	engine->request_alloc = guc_request_alloc;
 
+	engine->reset.prepare = guc_reset_prepare;
+	engine->reset.rewind = guc_reset_rewind;
+	engine->reset.cancel = guc_reset_cancel;
+	engine->reset.finish = guc_reset_finish;
+
 	engine->emit_flush = gen8_emit_flush_xcs;
 	engine->emit_init_breadcrumb = gen8_emit_init_breadcrumb;
 	engine->emit_fini_breadcrumb = gen8_emit_fini_breadcrumb_xcs;
@@ -666,6 +644,20 @@ static void guc_default_vfuncs(struct intel_engine_cs *engine)
 		engine->emit_flush = gen12_emit_flush_xcs;
 	}
 	engine->set_default_submission = guc_set_default_submission;
+
+	engine->flags |= I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
+	engine->flags |= I915_ENGINE_HAS_PREEMPTION;
+
+	/*
+	 * TODO: GuC supports timeslicing and semaphores as well, but they're
+	 * handled by the firmware so some minor tweaks are required before
+	 * enabling.
+	 *
+	 * engine->flags |= I915_ENGINE_HAS_TIMESLICES;
+	 * engine->flags |= I915_ENGINE_HAS_SEMAPHORES;
+	 */
+
+	engine->emit_bb_start = gen8_emit_bb_start;
 }
 
 static void rcs_submission_override(struct intel_engine_cs *engine)
-- 
2.20.1