[Intel-gfx] [RFC PATCH 22/42] drm/i915: define HAS_MAPPABLE_APERTURE

[Matthew Auld]

From: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>

The following patches in the series will use it to avoid certain
operations when aperture is not available in HW.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Matthew Auld <matthew.auld at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index bdf85e901268..772fffa87545 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2481,6 +2481,8 @@ static inline unsigned int i915_sg_segment_size(void)
 #define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
 		(INTEL_INFO(dev_priv)->display.overlay_needs_physical)
 
+#define HAS_MAPPABLE_APERTURE(dev_priv) (dev_priv->ggtt.mappable_end > 0)
+
 /* Early gen2 have a totally busted CS tlb and require pinned batches. */
 #define HAS_BROKEN_CS_TLB(dev_priv)	(IS_I830(dev_priv) || IS_I845G(dev_priv))
 
-- 
2.20.1