drm/i915: Inline feature detection into sanitize_enable_ppgtt

Rather than splitting and hiding away critical parts of
sanitize_enable_ppgtt() into single use macros in the headers, inline
them into the function for clarity.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 11 insertions, 5 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 03f59ecbb200..5fce16c9d647 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2139,8 +2139,6 @@ struct drm_i915_cmd_table {
 
 #define HAS_HW_CONTEXTS(dev)    (INTEL_INFO(dev)->gen >= 6)
 #define HAS_LOGICAL_RING_CONTEXTS(dev)  (INTEL_INFO(dev)->gen >= 8)
-#define HAS_ALIASING_PPGTT(dev) (INTEL_INFO(dev)->gen >= 6)
-#define HAS_PPGTT(dev)          (INTEL_INFO(dev)->gen >= 7 && !IS_GEN8(dev))
 #define USES_PPGTT(dev)         (i915.enable_ppgtt)
 #define USES_FULL_PPGTT(dev)    (i915.enable_ppgtt == 2)
 
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index a234446a8678..90c9bf6e71b7 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -35,13 +35,21 @@ static void chv_setup_private_ppat(struct drm_i915_private *dev_priv);
 
 static int sanitize_enable_ppgtt(struct drm_device *dev, int enable_ppgtt)
 {
-        if (enable_ppgtt == 0 || !HAS_ALIASING_PPGTT(dev))
+        bool has_aliasing_ppgtt;
+        bool has_full_ppgtt;
+
+        has_aliasing_ppgtt = INTEL_INFO(dev)->gen >= 6;
+        has_full_ppgtt = INTEL_INFO(dev)->gen >= 7;
+        if (IS_GEN8(dev))
+                has_full_ppgtt = false; /* XXX why? */
+
+        if (enable_ppgtt == 0 || !has_aliasing_ppgtt)
                 return 0;
 
         if (enable_ppgtt == 1)
                 return 1;
 
-        if (enable_ppgtt == 2 && HAS_PPGTT(dev))
+        if (enable_ppgtt == 2 && has_full_ppgtt)
                 return 2;
 
 #ifdef CONFIG_INTEL_IOMMU
@@ -59,7 +67,7 @@ static int sanitize_enable_ppgtt(struct drm_device *dev, int enable_ppgtt)
                 return 0;
         }
 
-        return HAS_PPGTT(dev) ? 2 : HAS_ALIASING_PPGTT(dev) ? 1 : 0;
+        return has_full_ppgtt ? 2 : has_aliasing_ppgtt ? 1 : 0;
 }