From 08fff7aeddc9dd72161b4c8fc27fbab12b4b9352 Mon Sep 17 00:00:00 2001
From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date: Tue, 15 Oct 2019 18:44:49 +0300
Subject: drm/i915/tgl: Wa_1607138340
Git-commit: 08fff7aeddc9dd72161b4c8fc27fbab12b4b9352
Patch-mainline: v5.5-rc1
References: bsc#1152489
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
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/gt/intel_lrc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index d64b4d868b75..44f213fd7604 100644
--- 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;
}
--
2.28.0