[PATCH 3/3] drm/xe/xe3p: Skip TD flush

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

Xe3p has HW ability to do transient display flush so the xe driver can
enable this HW feature by default and skip the software TD flush.

Bspec: 60002
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
---
 drivers/gpu/drm/xe/xe_device.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index da2abed94bc0..483813d45474 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -1166,6 +1166,14 @@ void xe_device_td_flush(struct xe_device *xe)
 {
 	struct xe_gt *root_gt;
 
+	/*
+	 * From Xe3p onward the HW takes care of flush of TD entries also along
+	 * with flushing XA entries, which will be at the usual sync points,
+	 * like at the end of submission, so no manual flush is needed here.
+	 */
+	if (GRAPHICS_VER(xe) >= 35)
+		return;
+
 	if (!IS_DGFX(xe) || GRAPHICS_VER(xe) < 20)
 		return;
 
-- 
2.52.0