xe_vram_region_usable_size
if (xe_vram_region_io_size(vram) < xe_vram_region_usable_size(vram)) {
if (phys_base >= xe_vram_region_usable_size(tile0->mem.vram)) {
KUNIT_ASSERT_EQ(test, usable, xe_vram_region_usable_size(tile->mem.vram));
u64 usable = xe_vram_region_usable_size(tile->mem.vram);
xe_assert(xe, IS_ALIGNED(xe_vram_region_usable_size(vram), SZ_2M));
xe_vram_region_usable_size(vram),
resource_size_t xe_vram_region_usable_size(const struct xe_vram_region *vram);