diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_tiling.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_tiling.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c index 1a9306665987..b964df51cec7 100644 --- a/drivers/gpu/drm/i915/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c @@ -354,9 +354,15 @@ i915_gem_set_tiling(struct drm_device *dev, void *data, /* We need to rebind the object if its current allocation * no longer meets the alignment restrictions for its new * tiling mode. Otherwise we can just leave it alone, but - * need to ensure that any fence register is cleared. + * need to ensure that any fence register is updated before + * the next fenced (either through the GTT or by the BLT unit + * on older GPUs) access. + * + * After updating the tiling parameters, we then flag whether + * we need to update an associated fence register. Note this + * has to also include the unfenced register the GPU uses + * whilst executing a fenced command for an untiled object. */ - i915_gem_release_mmap(obj); obj->map_and_fenceable = obj->gtt_space == NULL || @@ -374,9 +380,15 @@ i915_gem_set_tiling(struct drm_device *dev, void *data, } if (ret == 0) { - obj->tiling_changed = true; + obj->fence_dirty = + obj->fenced_gpu_access || + obj->fence_reg != I915_FENCE_REG_NONE; + obj->tiling_mode = args->tiling_mode; obj->stride = args->stride; + + /* Force the fence to be reacquired for GTT access */ + i915_gem_release_mmap(obj); } } /* we have to maintain this existing ABI... */ |