drm/i915: range-restricted eviction support

Add a mappable parameter to i915_gem_evict_something to distinguish
the two cases (non-restricted vs. mappable gtt allocations). No
functional changes because the mappable limit is set to the end of
the gtt currently.

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

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f168e82c10a..dc0a21a3489 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -535,6 +535,8 @@ typedef struct drm_i915_private {
                 struct drm_mm vram;
                 /** Memory allocator for GTT */
                 struct drm_mm gtt_space;
+                /** End of mappable part of GTT */
+                unsigned long gtt_mappable_end;
 
                 struct io_mapping *gtt_mapping;
                 int gtt_mtrr;
@@ -1067,7 +1069,8 @@ void i915_gem_shrinker_init(void);
 void i915_gem_shrinker_exit(void);
 
 /* i915_gem_evict.c */
-int i915_gem_evict_something(struct drm_device *dev, int min_size, unsigned alignment);
+int i915_gem_evict_something(struct drm_device *dev, int min_size,
+                             unsigned alignment, bool mappable);
 int i915_gem_evict_everything(struct drm_device *dev);
 int i915_gem_evict_inactive(struct drm_device *dev);