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.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>

2 files changed, 15 insertions, 0 deletions

diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
index 52a16cb4e736..03f7fe7acf8c 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -96,6 +96,20 @@ bool xe_bo_is_stolen(struct xe_bo *bo)
 }
 
 /**
+ * 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
  *
diff --git a/drivers/gpu/drm/xe/xe_bo.h b/drivers/gpu/drm/xe/xe_bo.h
index a885b14bf595..6de894c728f5 100644
--- a/drivers/gpu/drm/xe/xe_bo.h
+++ b/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);