drm/xe: Add infrastructure for per engine tuning

Add the infrastructure for per engine tuning in preparation for disable
indirect state.

v3: Rebase
v4: Fix rebasing issues

Reviewed-by: Matt Roper <[e-mail]>
Signed-off-by: Matt Atwood <[e-mail]>
Signed-off-by: Rodrigo Vivi <[e-mail]>

drivers/gpu/drm/xe/xe_hw_engine.c

···
 #include "xe_reg_sr.h"
 #include "xe_rtp.h"
 #include "xe_sched_job.h"
+#include "xe_tuning.h"
 #include "xe_wa.h"
 
 #define MAX_MMIO_BASES 3
···
 	}
 
 	xe_reg_sr_init(&hwe->reg_sr, hwe->name, gt_to_xe(gt));
+	xe_tuning_process_engine(hwe);
 	xe_wa_process_engine(hwe);
 	hw_engine_setup_default_state(hwe);
 

drivers/gpu/drm/xe/xe_tuning.c

···
 	{}
 };
 
+static const struct xe_rtp_entry_sr engine_tunings[] = {
+	{}
+};
+
 static const struct xe_rtp_entry_sr lrc_tunings[] = {
 	{ XE_RTP_NAME("Tuning: ganged timer, also known as 16011163337"),
 	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1200, 1210), ENGINE_CLASS(RENDER)),
···
 	xe_rtp_process_to_sr(&ctx, gt_tunings, &gt->reg_sr);
 }
 EXPORT_SYMBOL_IF_KUNIT(xe_tuning_process_gt);
+
+void xe_tuning_process_engine(struct xe_hw_engine *hwe)
+{
+	struct xe_rtp_process_ctx ctx = XE_RTP_PROCESS_CTX_INITIALIZER(hwe);
+
+	xe_rtp_process_to_sr(&ctx, engine_tunings, &hwe->reg_sr);
+}
+EXPORT_SYMBOL_IF_KUNIT(xe_tuning_process_engine);
 
 /**
  * xe_tuning_process_lrc - process lrc tunings

drivers/gpu/drm/xe/xe_tuning.h

···
 struct xe_hw_engine;
 
 void xe_tuning_process_gt(struct xe_gt *gt);
+void xe_tuning_process_engine(struct xe_hw_engine *hwe);
 void xe_tuning_process_lrc(struct xe_hw_engine *hwe);
 
 #endif