From a338d5f8765f22e97421eb18a186a4af85d4efb2 Mon Sep 17 00:00:00 2001 From: Zhi Wang Date: Fri, 1 Sep 2017 03:36:14 +0800 Subject: [PATCH] drm/i915: Fix the missing PPAT cache attributes on CNL Add back the GEN8_PPAT_WB cache attributes in cnl_setup_private_ppat(), which are missed on CNL. Fixes: 4e34935fcf69 ("drm/i915/cnl: Setup PAT Index.") Cc: Ben Widawsky Cc: Rodrigo Vivi Cc: Chris Wilson Suggested-by: Joonas Lahtinen Signed-off-by: Zhi Wang Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/1504208177-27784-1-git-send-email-zhi.a.wang@intel.com (cherry picked from commit 6e31cdcfe17d8a25530924183d4a843602baebb1) Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/i915/i915_gem_gtt.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index d60f38adc4c4..933c4ea127ce 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -2754,10 +2754,10 @@ static void cnl_setup_private_ppat(struct drm_i915_private *dev_priv) I915_WRITE(GEN10_PAT_INDEX(1), GEN8_PPAT_WC | GEN8_PPAT_LLCELLC); I915_WRITE(GEN10_PAT_INDEX(2), GEN8_PPAT_WT | GEN8_PPAT_LLCELLC); I915_WRITE(GEN10_PAT_INDEX(3), GEN8_PPAT_UC); - I915_WRITE(GEN10_PAT_INDEX(4), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0)); - I915_WRITE(GEN10_PAT_INDEX(5), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1)); - I915_WRITE(GEN10_PAT_INDEX(6), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2)); - I915_WRITE(GEN10_PAT_INDEX(7), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3)); + I915_WRITE(GEN10_PAT_INDEX(4), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0)); + I915_WRITE(GEN10_PAT_INDEX(5), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1)); + I915_WRITE(GEN10_PAT_INDEX(6), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2)); + I915_WRITE(GEN10_PAT_INDEX(7), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3)); } /* The GGTT and PPGTT need a private PPAT setup in order to handle cacheability -- 2.20.1