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drm/i915: Consolidate #ifdef CONFIG_INTEL_IOMMU

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We depend on intel_iommu_gfx_mapped for various workarounds, but that is
only available under an #ifdef CONFIG_INTEL_IOMMU. Refactor all the
cut-and-paste ifdefs to a common routine.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170525121612.2190-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
This commit is contained in:
Chris Wilson
2017-05-25 13:16:12 +01:00
parent b2241f182a
commit 80debff8d9
5 changed files with 14 additions and 27 deletions
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4
drivers/gpu/drm/i915/intel_fbc.c
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@@ -1312,14 +1312,12 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *dev_priv)
static bool need_fbc_vtd_wa(struct drm_i915_private *dev_priv)
{
#ifdef CONFIG_INTEL_IOMMU
/* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt */
if (intel_iommu_gfx_mapped &&
if (intel_vtd_active() &&
(IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))) {
DRM_INFO("Disabling framebuffer compression (FBC) to prevent screen flicker with VT-d enabled\n");
return true;
}
#endif
return false;
}