[PATCH v4 4/5] drm/xe: Add function to check if BO has single placement

[Nirmoy Das]

A new helper function xe_bo_has_single_placement() to check
if a BO has single placement.

Signed-off-by: Nirmoy Das <nirmoy.das at intel.com>
Reviewed-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/xe/xe_bo.c | 14 ++++++++++++++
 drivers/gpu/drm/xe/xe_bo.h |  1 +
 2 files changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
index bc1f794e3e61..37df8c5aa707 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/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
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);
-- 
2.42.0