[PATCH 2/3] drm/xe/xe3p_lpg: Enable L2 flush optimization feature

[Tejas Upadhyay <tejas.upadhyay@intel.com>]

When set, the L2 flush optimization feature will control
whether L2 is in Persistent or Transient mode through
monitoring of media activity.

To enable L2 flush optimization include new feature flag
GUC_CTL_ENABLE_L2FLUSH_OPT for Novalake platforms when
media type is detected.

Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
---
 drivers/gpu/drm/xe/xe_guc.c      | 3 +++
 drivers/gpu/drm/xe/xe_guc_fwif.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c
index 303f6ae7c418..517672818a2f 100644
--- a/drivers/gpu/drm/xe/xe_guc.c
+++ b/drivers/gpu/drm/xe/xe_guc.c
@@ -98,6 +98,9 @@ static u32 guc_ctl_feature_flags(struct xe_guc *guc)
 	if (xe_guc_using_main_gamctrl_queues(guc))
 		flags |= GUC_CTL_MAIN_GAMCTRL_QUEUES;
 
+	if (GRAPHICS_VER(xe) >= 35 && !IS_DGFX(xe) && xe_gt_is_media_type(guc_to_gt(guc)))
+		flags |= GUC_CTL_ENABLE_L2FLUSH_OPT;
+
 	return flags;
 }
 
diff --git a/drivers/gpu/drm/xe/xe_guc_fwif.h b/drivers/gpu/drm/xe/xe_guc_fwif.h
index a33ea288b907..39ff7b3e960b 100644
--- a/drivers/gpu/drm/xe/xe_guc_fwif.h
+++ b/drivers/gpu/drm/xe/xe_guc_fwif.h
@@ -67,6 +67,7 @@ struct guc_update_exec_queue_policy {
 #define   GUC_CTL_ENABLE_PSMI_LOGGING	BIT(7)
 #define   GUC_CTL_MAIN_GAMCTRL_QUEUES	BIT(9)
 #define   GUC_CTL_DISABLE_SCHEDULER	BIT(14)
+#define   GUC_CTL_ENABLE_L2FLUSH_OPT	BIT(15)
 
 #define GUC_CTL_DEBUG			3
 #define   GUC_LOG_VERBOSITY		REG_GENMASK(1, 0)
-- 
2.52.0