[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 d6672cf30d3e..b3bf8d168f0a 100644
--- a/drivers/gpu/drm/xe/xe_guc.c
+++ b/drivers/gpu/drm/xe/xe_guc.c
@@ -96,6 +96,9 @@ 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 7d93c2749485..9aff0e454c7f 100644
--- a/drivers/gpu/drm/xe/xe_guc_fwif.h
+++ b/drivers/gpu/drm/xe/xe_guc_fwif.h
@@ -115,6 +115,7 @@ 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)
-- 
2.34.1