When a flat-CCS aware bo is evicted from lmem, its control surface will be written out into smem. This will be done in the shape of a kernel-only bo attached to the original bo.
Signed-off-by: Adrian Larumbe <[email protected]> --- drivers/gpu/drm/i915/gem/i915_gem_object_types.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h index 71e778ecaeb8..9f574e149c58 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h @@ -628,6 +628,16 @@ struct drm_i915_gem_object { void *gvt_info; }; + + /** + * This is set if the object is lmem-placeable, supports flat + * CCS and is compressed. In that case, a separate block of + * stolen lmem memory will contain its compression data. + */ + struct { + struct drm_i915_gem_object *swap; + bool enabled:1; + } flat_css; }; static inline struct drm_i915_gem_object * -- 2.34.1
