[PATCH v7 6/9] drm/i915/gt: Refactor intel_emit_pipe_control_cs() in a single function

[Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>]

Just a trivial refactoring for reducing the number of code
duplicate. This will come at handy in the next commits.

Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v5.8+
---
 drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 44 +++++++++++++-----------
 1 file changed, 23 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
index 9d050b9a19194..202d6ff8b5264 100644
--- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
@@ -177,23 +177,31 @@ u32 *gen12_emit_aux_table_inv(struct intel_gt *gt, u32 *cs, const i915_reg_t inv
 	return cs;
 }
 
+static u32 *intel_emit_pipe_control_cs(struct i915_request *rq, u32 bit_group_0,
+				       u32 bit_group_1, u32 offset)
+{
+	u32 *cs;
+
+	cs = intel_ring_begin(rq, 6);
+	if (IS_ERR(cs))
+		return cs;
+
+	cs = gen12_emit_pipe_control(cs, bit_group_0, bit_group_1,
+				     LRC_PPHWSP_SCRATCH_ADDR);
+	intel_ring_advance(rq, cs);
+
+	return cs;
+}
+
 static int mtl_dummy_pipe_control(struct i915_request *rq)
 {
 	/* Wa_14016712196 */
 	if (IS_MTL_GRAPHICS_STEP(rq->engine->i915, M, STEP_A0, STEP_B0) ||
-	    IS_MTL_GRAPHICS_STEP(rq->engine->i915, P, STEP_A0, STEP_B0)) {
-		u32 *cs;
-
-		/* dummy PIPE_CONTROL + depth flush */
-		cs = intel_ring_begin(rq, 6);
-		if (IS_ERR(cs))
-			return PTR_ERR(cs);
-		cs = gen12_emit_pipe_control(cs,
-					     0,
-					     PIPE_CONTROL_DEPTH_CACHE_FLUSH,
-					     LRC_PPHWSP_SCRATCH_ADDR);
-		intel_ring_advance(rq, cs);
-	}
+	    IS_MTL_GRAPHICS_STEP(rq->engine->i915, P, STEP_A0, STEP_B0))
+		intel_emit_pipe_control_cs(rq,
+					   0,
+					   PIPE_CONTROL_DEPTH_CACHE_FLUSH,
+					   LRC_PPHWSP_SCRATCH_ADDR);
 
 	return 0;
 }
@@ -210,7 +218,6 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
 		u32 bit_group_0 = 0;
 		u32 bit_group_1 = 0;
 		int err;
-		u32 *cs;
 
 		err = mtl_dummy_pipe_control(rq);
 		if (err)
@@ -244,13 +251,8 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
 		else if (engine->class == COMPUTE_CLASS)
 			bit_group_1 &= ~PIPE_CONTROL_3D_ENGINE_FLAGS;
 
-		cs = intel_ring_begin(rq, 6);
-		if (IS_ERR(cs))
-			return PTR_ERR(cs);
-
-		cs = gen12_emit_pipe_control(cs, bit_group_0, bit_group_1,
-					     LRC_PPHWSP_SCRATCH_ADDR);
-		intel_ring_advance(rq, cs);
+		intel_emit_pipe_control_cs(rq, bit_group_0, bit_group_1,
+					   LRC_PPHWSP_SCRATCH_ADDR);
 	}
 
 	if (mode & EMIT_INVALIDATE) {
-- 
2.40.1