From 6fc29133eafb9eb3338024884f3a5a4fa844d45c Mon Sep 17 00:00:00 2001 From: Mika Kuoppala Date: Tue, 7 Jun 2016 17:19:08 +0300 Subject: [PATCH] drm/i915/gen9: Add WaDisableSkipCaching Make sure that we never enable skip caching on gen9 by accident. References: HSD#2134698 Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-17-git-send-email-mika.kuoppala@intel.com --- drivers/gpu/drm/i915/intel_mocs.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_mocs.c b/drivers/gpu/drm/i915/intel_mocs.c index b765c75f3fcd..8f96c40e415c 100644 --- a/drivers/gpu/drm/i915/intel_mocs.c +++ b/drivers/gpu/drm/i915/intel_mocs.c @@ -156,6 +156,16 @@ static bool get_mocs_settings(struct drm_i915_private *dev_priv, "Platform that should have a MOCS table does not.\n"); } + /* WaDisableSkipCaching:skl,bxt,kbl */ + if (IS_GEN9(dev_priv)) { + int i; + + for (i = 0; i < table->size; i++) + if (WARN_ON(table->table[i].l3cc_value & + (L3_ESC(1) || L3_SCC(0x7)))) + return false; + } + return result; } -- 2.20.1