drm/i915/tgl: Wa_1607138340

Avoid possible cs hang with semaphores by disabling lite restore. Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20191015154449.10338-11-mika.kuoppala@linux.intel.com
mariux64 · Oct 15, 2019 · 08fff7a · 08fff7a
1 parent 99db8c5
commit 08fff7a
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1048,6 +1048,10 @@ static u64 execlists_update_context(const struct i915_request *rq)
 	desc = ce->lrc_desc;
 	ce->lrc_desc &= ~CTX_DESC_FORCE_RESTORE;
 
+	/* Wa_1607138340:tgl */
+	if (IS_TGL_REVID(rq->i915, TGL_REVID_A0, TGL_REVID_A0))
+		desc |= CTX_DESC_FORCE_RESTORE;
+
 	return desc;
 }