MTL can hang because of a HW bug while parallel reading/writing
from/to LMEM/GTTMMADR BAR so try to reduce GGTT update
related pci transactions with blitter command as recommended
for Wa_13010847436 and Wa_14019519902.
Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>
Reviewed-by: Oak Zeng <oak.zeng@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_gtt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.c b/drivers/gpu/drm/i915/gt/intel_gtt.c
index 4c89eb8d9af7..4fbed27ef0ec 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.c
@@ -23,7 +23,8 @@
bool i915_ggtt_require_binder(struct drm_i915_private *i915)
{
- return false;
+ /* Wa_13010847436 & Wa_14019519902 */
+ return MEDIA_VER_FULL(i915) == IP_VER(13, 0);
}
static bool intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *i915)
--
2.41.0
