[Intel-gfx] [RFC 4/6] drm/i915/guc: Re-use lrc flush functions

[Daniele Ceraolo Spurio]

The flush commands are independent from the submission method, so we can
re-use the same code.

RFC: I've kept the function in intel_lrc.c for now as my current plan is
to keep the common code there and split out execlists_submission out,
but maybe intel_gpu_commands.c would be a better location?

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: John Harrison <John.C.Harrison at Intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c               | 8 +++-----
 drivers/gpu/drm/i915/gt/intel_lrc.h               | 4 ++++
 drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 3 +++
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 7e912959fb3d..cd15ab7fb82f 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -3793,7 +3793,7 @@ static void gen8_logical_ring_disable_irq(struct intel_engine_cs *engine)
 	ENGINE_WRITE(engine, RING_IMR, ~engine->irq_keep_mask);
 }
 
-static int gen8_emit_flush(struct i915_request *request, u32 mode)
+int gen8_emit_flush(struct i915_request *request, u32 mode)
 {
 	u32 cmd, *cs;
 
@@ -3892,8 +3892,7 @@ static int gen8_emit_flush_render(struct i915_request *request,
 	return 0;
 }
 
-static int gen11_emit_flush_render(struct i915_request *request,
-				   u32 mode)
+int gen11_emit_flush_render(struct i915_request *request, u32 mode)
 {
 	if (mode & EMIT_FLUSH) {
 		u32 *cs;
@@ -3949,8 +3948,7 @@ static u32 preparser_disable(bool state)
 	return MI_ARB_CHECK | 1 << 8 | state;
 }
 
-static int gen12_emit_flush_render(struct i915_request *request,
-				   u32 mode)
+int gen12_emit_flush_render(struct i915_request *request, u32 mode)
 {
 	if (mode & EMIT_FLUSH) {
 		u32 flags = 0;
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.h b/drivers/gpu/drm/i915/gt/intel_lrc.h
index 07d1655ed8c0..c5afae6bc89b 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.h
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.h
@@ -87,6 +87,10 @@ void intel_logical_ring_cleanup(struct intel_engine_cs *engine);
 int intel_execlists_submission_setup(struct intel_engine_cs *engine);
 void intel_execlists_submission_vfuncs(struct intel_engine_cs *engine);
 
+int gen8_emit_flush(struct i915_request *request, u32 mode);
+int gen11_emit_flush_render(struct i915_request *request, u32 mode);
+int gen12_emit_flush_render(struct i915_request *request, u32 mode);
+
 /* Logical Ring Contexts */
 /* At the start of the context image is its per-process HWS page */
 #define LRC_PPHWSP_PN	(0)
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 c688f21cc27e..edefb3cf135f 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -776,6 +776,7 @@ static void guc_submission_default_vfuncs(struct intel_engine_cs *engine)
 
 	engine->request_alloc = guc_submission_request_alloc;
 
+	engine->emit_flush = gen8_emit_flush;
 	engine->emit_init_breadcrumb = emit_init_breadcrumb;
 	engine->emit_fini_breadcrumb = emit_fini_breadcrumb_xcs;
 
@@ -796,9 +797,11 @@ static void rcs_submission_override(struct intel_engine_cs *engine)
 
 	switch (INTEL_GEN(engine->i915)) {
 	case 12:
+		engine->emit_flush = gen12_emit_flush_render;
 		engine->emit_fini_breadcrumb = gen12_emit_fini_breadcrumb_rcs;
 		break;
 	default:
+		engine->emit_flush = gen11_emit_flush_render;
 		engine->emit_fini_breadcrumb = gen11_emit_fini_breadcrumb_rcs;
 		break;
 	}
-- 
2.24.1