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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.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index 4cce1aef438..6be3f927c86 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -216,6 +216,22 @@ i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
else
tile_width = 512;
+ /* check maximum stride & object size */
+ if (IS_I965G(dev)) {
+ /* i965 stores the end address of the gtt mapping in the fence
+ * reg, so dont bother to check the size */
+ if (stride / 128 > I965_FENCE_MAX_PITCH_VAL)
+ return false;
+ } else if (IS_I9XX(dev)) {
+ if (stride / tile_width > I830_FENCE_MAX_PITCH_VAL ||
+ size > (I830_FENCE_MAX_SIZE_VAL << 20))
+ return false;
+ } else {
+ if (stride / 128 > I830_FENCE_MAX_PITCH_VAL ||
+ size > (I830_FENCE_MAX_SIZE_VAL << 19))
+ return false;
+ }
+
/* 965+ just needs multiples of tile width */
if (IS_I965G(dev)) {
if (stride & (tile_width - 1))