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drm/i915/kbl: Add WaSkipStolenMemoryFirstPage for A0 

We need this for kbl a0 boards. Note that this should be also
for bxt A0 but we omit that on purpose as bxt A0's are
out of fashion already.

References: HSD#1912158, HSD#4393097
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-5-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit 6e4f10c33a)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
This commit is contained in:
Mika Kuoppala 2016-06-07 17:18:56 +03:00 committed by Mika Kuoppala
parent a1d97ca5b2
commit 89b54515d3
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/i915_gem_stolen.c
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@ -55,8 +55,10 @@ int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv,
return -ENODEV;
/* See the comment at the drm_mm_init() call for more about this check.
* WaSkipStolenMemoryFirstPage:bdw,chv (incomplete) */
if (INTEL_INFO(dev_priv)->gen == 8 && start < 4096)
* WaSkipStolenMemoryFirstPage:bdw,chv,kbl (incomplete)
*/
if (start < 4096 && (IS_GEN8(dev_priv) ||
IS_KBL_REVID(dev_priv, 0, KBL_REVID_A0)))
start = 4096;
mutex_lock(&dev_priv->mm.stolen_lock);