.__runtime.page_sizes = I915_GTT_PAGE_SIZE_4K
 
 #define GEN_DEFAULT_REGIONS \
-       .memory_regions = REGION_SMEM | REGION_STOLEN_SMEM
+       .memory_regions = BIT(INTEL_REGION_SMEM) | BIT(INTEL_REGION_STOLEN_SMEM)
 
 #define I830_FEATURES \
        GEN(2), \
 };
 
 #define DGFX_FEATURES \
-       .memory_regions = REGION_SMEM | REGION_LMEM | REGION_STOLEN_LMEM, \
+       .memory_regions = BIT(INTEL_REGION_SMEM) | BIT(INTEL_REGION_LMEM_0) | BIT(INTEL_REGION_STOLEN_LMEM), \
        .has_llc = 0, \
        .has_pxp = 0, \
        .has_snoop = 1, \
        .has_snoop = 1,
        .max_pat_index = 4,
        .has_pxp = 1,
-       .memory_regions = REGION_SMEM | REGION_STOLEN_LMEM,
+       .memory_regions = BIT(INTEL_REGION_SMEM) | BIT(INTEL_REGION_STOLEN_LMEM),
        .platform_engine_mask = BIT(RCS0) | BIT(BCS0) | BIT(CCS0),
        MTL_CACHELEVEL,
 };
 
        INTEL_REGION_UNKNOWN, /* Should be last */
 };
 
-#define REGION_SMEM     BIT(INTEL_REGION_SMEM)
-#define REGION_LMEM     BIT(INTEL_REGION_LMEM_0)
-#define REGION_STOLEN_SMEM   BIT(INTEL_REGION_STOLEN_SMEM)
-#define REGION_STOLEN_LMEM   BIT(INTEL_REGION_STOLEN_LMEM)
-
 #define I915_ALLOC_CONTIGUOUS     BIT(0)
 
 #define for_each_memory_region(mr, i915, id) \
 
        .__runtime.page_sizes = (I915_GTT_PAGE_SIZE_4K |
                                 I915_GTT_PAGE_SIZE_64K |
                                 I915_GTT_PAGE_SIZE_2M),
-       .memory_regions = REGION_SMEM,
+       .memory_regions = BIT(INTEL_REGION_SMEM),
        .platform_engine_mask = BIT(0),
 
        /* simply use legacy cache level for mock device */