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Merge tag 'drm-intel-fixes-2014-10-02' of git://anongit.freedesktop.org/drm-intel into drm-fixes

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final regression fix for 3.17.

* tag 'drm-intel-fixes-2014-10-02' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Flush the PTEs after updating them before suspend
This commit is contained in:
Dave Airlie 2014-10-03 11:38:16 +10:00
parent 19318c063b 91e5649930
commit eee0815dab
1 changed files with 13 additions and 1 deletions
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14
drivers/gpu/drm/i915/i915_gem_gtt.c
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@ -1310,6 +1310,16 @@ void i915_check_and_clear_faults(struct drm_device *dev)
POSTING_READ(RING_FAULT_REG(&dev_priv->ring[RCS]));
}
static void i915_ggtt_flush(struct drm_i915_private *dev_priv)
{
if (INTEL_INFO(dev_priv->dev)->gen < 6) {
intel_gtt_chipset_flush();
} else {
I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN);
POSTING_READ(GFX_FLSH_CNTL_GEN6);
}
}
void i915_gem_suspend_gtt_mappings(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@ -1326,6 +1336,8 @@ void i915_gem_suspend_gtt_mappings(struct drm_device *dev)
dev_priv->gtt.base.start,
dev_priv->gtt.base.total,
true);
i915_ggtt_flush(dev_priv);
}
void i915_gem_restore_gtt_mappings(struct drm_device *dev)
@ -1378,7 +1390,7 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev)
gen6_write_pdes(container_of(vm, struct i915_hw_ppgtt, base));
}
i915_gem_chipset_flush(dev);
i915_ggtt_flush(dev_priv);
}
int i915_gem_gtt_prepare_object(struct drm_i915_gem_object *obj)