drm/xe: Extract xe_bo_is_visible_vram

This will make it possible to call from xe_display code.

Reviewed-by: Francois Dugast <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Maarten Lankhorst <[e-mail]>

drivers/gpu/drm/xe/xe_bo.c

···
 	return vres->used_visible_size == mem->size;
 }
 
+/**
+ * xe_bo_is_visible_vram - check if BO is placed entirely in visible VRAM.
+ * @bo: The BO
+ *
+ * This function checks whether a given BO resides entirely in memory visible from the CPU
+ *
+ * Returns: true if the BO is entirely visible, false otherwise.
+ *
+ */
+bool xe_bo_is_visible_vram(struct xe_bo *bo)
+{
+	if (drm_WARN_ON(bo->ttm.base.dev, !xe_bo_is_vram(bo)))
+		return false;
+
+	return xe_ttm_resource_visible(bo->ttm.resource);
+}
+
 static int xe_ttm_io_mem_reserve(struct ttm_device *bdev,
 				 struct ttm_resource *mem)
 {
···
 	if (!mem_type_is_vram(ttm_bo->resource->mem_type))
 		return -EIO;
 
-	if (!xe_ttm_resource_visible(ttm_bo->resource) || len >= SZ_16K) {
+	if (!xe_bo_is_visible_vram(bo) || len >= SZ_16K) {
 		struct xe_migrate *migrate =
 			mem_type_to_migrate(xe, ttm_bo->resource->mem_type);
 

drivers/gpu/drm/xe/xe_bo.h

···
 
 bool mem_type_is_vram(u32 mem_type);
 bool xe_bo_is_vram(struct xe_bo *bo);
+bool xe_bo_is_visible_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_is_vm_bound(struct xe_bo *bo);