drm/i915: Parameterize binder context creation

Add i915_ggtt_require_binder() to indicate that i915
needs to create binder context which will be used
by subsequent patch to enable i915_address_space vfuncs
that will use GPU commands to update GGTT.
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Oak Zeng <oak.zeng@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230926083742.14740-5-nirmoy.das@intel.com

drivers/gpu/drm/i915/gt/intel_engine_cs.c

@@ -1477,7 +1477,7 @@ static int engine_init_common(struct intel_engine_cs *engine)
 	 * engines as well but BCS should be less busy engine so pick that for
 	 * GGTT updates.
 	 */
-	if (engine->id == BCS0) {
+	if (i915_ggtt_require_binder(engine->i915) && engine->id == BCS0) {
 		bce = create_ggtt_bind_context(engine);
 		if (IS_ERR(bce)) {
 			ret = PTR_ERR(bce);

drivers/gpu/drm/i915/gt/intel_gtt.c

@@ -21,6 +21,10 @@
 #include "intel_gt_regs.h"
 #include "intel_gtt.h"
 
+bool i915_ggtt_require_binder(struct drm_i915_private *i915)
+{
+	return false;
+}
 
 static bool intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *i915)
 {

drivers/gpu/drm/i915/gt/intel_gtt.h

@@ -691,4 +691,6 @@ static inline struct sgt_dma {
 	return (struct sgt_dma){ sg, addr, addr + sg_dma_len(sg) };
 }
 
+bool i915_ggtt_require_binder(struct drm_i915_private *i915);
+
 #endif