intel/common: Add a new struct to describe AUX mapping format

The new struct and some helper functions are for further
refactoring.

Reworks:
 * Jordan: Refactor code around aux format array

Signed-off-by: Jianxun Zhang <jianxun.zhang@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20167>

src/intel/common/intel_aux_map.h

@@ -72,6 +72,20 @@ intel_aux_map_get_state_num(struct intel_aux_map_context *ctx);
 uint32_t
 intel_aux_map_get_num_buffers(struct intel_aux_map_context *ctx);
 
+/**
+ * Returns the mask of meta data address in L1 entry
+ *
+ * The mask value is effected by page size of meta data specific to a platform.
+ */
+uint64_t
+intel_aux_get_meta_address_mask(struct intel_aux_map_context *ctx);
+
+/**
+ * Returns the ratio between the granularity of main surface and AUX data
+ */
+uint64_t
+intel_aux_get_main_to_aux_ratio(struct intel_aux_map_context *ctx);
+
 /** Fill an array of exec_object2 with aux-map buffer handles
  *
  * The intel_aux_map_get_num_buffers call should be made, then the driver can