drm/xe: Add function to check if BO has single placement

A new helper function xe_bo_has_single_placement() to check
if a BO has single placement.
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430162529.21588-5-nirmoy.das@intel.comSigned-off-by: Nirmoy Das <nirmoy.das@intel.com>

drivers/gpu/drm/xe/xe_bo.c

@@ -95,6 +95,20 @@ bool xe_bo_is_stolen(struct xe_bo *bo)
 	return bo->ttm.resource->mem_type == XE_PL_STOLEN;
 }
 
+/**
+ * xe_bo_has_single_placement - check if BO is placed only in one memory location
+ * @bo: The BO
+ *
+ * This function checks whether a given BO is placed in only one memory location.
+ *
+ * Returns: true if the BO is placed in a single memory location, false otherwise.
+ *
+ */
+bool xe_bo_has_single_placement(struct xe_bo *bo)
+{
+	return bo->placement.num_placement == 1;
+}
+
 /**
  * xe_bo_is_stolen_devmem - check if BO is of stolen type accessed via PCI BAR
  * @bo: The BO

drivers/gpu/drm/xe/xe_bo.h

@@ -206,6 +206,7 @@ bool mem_type_is_vram(u32 mem_type);
 bool xe_bo_is_vram(struct xe_bo *bo);
 bool xe_bo_is_stolen(struct xe_bo *bo);
 bool xe_bo_is_stolen_devmem(struct xe_bo *bo);
+bool xe_bo_has_single_placement(struct xe_bo *bo);
 uint64_t vram_region_gpu_offset(struct ttm_resource *res);
 
 bool xe_bo_can_migrate(struct xe_bo *bo, u32 mem_type);