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path: root/drivers/gpu/drm/i915/i915_gem_tiling.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_tiling.c')
-rw-r--r--drivers/gpu/drm/i915/i915_gem_tiling.c46
1 files changed, 22 insertions, 24 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index 30d6af6c09b..df278b2685b 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -304,35 +304,39 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev)
/**
- * Returns the size of the fence for a tiled object of the given size.
+ * Returns whether an object is currently fenceable. If not, it may need
+ * to be unbound and have its pitch adjusted.
*/
-static int
-i915_get_fence_size(struct drm_device *dev, int size)
+bool
+i915_obj_fenceable(struct drm_device *dev, struct drm_gem_object *obj)
{
- int i;
- int start;
+ struct drm_i915_gem_object *obj_priv = obj->driver_private;
if (IS_I965G(dev)) {
/* The 965 can have fences at any page boundary. */
- return ALIGN(size, 4096);
+ if (obj->size & 4095)
+ return false;
+ return true;
+ } else if (IS_I9XX(dev)) {
+ if (obj_priv->gtt_offset & ~I915_FENCE_START_MASK)
+ return false;
} else {
- /* Align the size to a power of two greater than the smallest
- * fence size.
- */
- if (IS_I9XX(dev))
- start = 1024 * 1024;
- else
- start = 512 * 1024;
+ if (obj_priv->gtt_offset & ~I830_FENCE_START_MASK)
+ return false;
+ }
- for (i = start; i < size; i <<= 1)
- ;
+ /* Power of two sized... */
+ if (obj->size & (obj->size - 1))
+ return false;
- return i;
- }
+ /* Objects must be size aligned as well */
+ if (obj_priv->gtt_offset & (obj->size - 1))
+ return false;
+ return true;
}
/* Check pitch constriants for all chips & tiling formats */
-static bool
+bool
i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
{
int tile_width;
@@ -384,12 +388,6 @@ i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
if (stride & (stride - 1))
return false;
- /* We don't 0handle the aperture area covered by the fence being bigger
- * than the object size.
- */
- if (i915_get_fence_size(dev, size) != size)
- return false;
-
return true;
}