Add subdata function

2 files changed, 20 insertions, 1 deletions

diff --git a/glamo/glamo_bo_gem.c b/glamo/glamo_bo_gem.c
index 2cd95c46..38a4436f 100644
--- a/glamo/glamo_bo_gem.c
+++ b/glamo/glamo_bo_gem.c
@@ -316,3 +316,21 @@ int glamo_gem_name_buffer(struct glamo_bo *bo, uint32_t *name)
 	*name = flink.name;
 	return 0;
 }
+
+int glamo_bo_subdata(struct glamo_bo *bo, unsigned long offset,
+                     unsigned long size, const void *data)
+{
+	int ret;
+
+	if (size == 0 || data == NULL)
+		return 0;
+
+	ret = bo_map(bo, 1);
+	if ( ret ) return ret;
+
+	memcpy((unsigned char *)bo->virtual + offset, data, size);
+
+	bo_unmap(bo);
+
+	return 0;
+}
diff --git a/glamo/glamo_bo_gem.h b/glamo/glamo_bo_gem.h
index 2f3e19bc..05b5fb9d 100644
--- a/glamo/glamo_bo_gem.h
+++ b/glamo/glamo_bo_gem.h
@@ -38,5 +38,6 @@ struct glamo_bo_manager *glamo_bo_manager_gem_ctor(int fd);
 void glamo_bo_manager_gem_dtor(struct glamo_bo_manager *bom);
 int glamo_gem_name_buffer(struct glamo_bo *bo, uint32_t *name);
 uint32_t glamo_gem_get_name(struct glamo_bo *bo);
-
+extern int glamo_bo_subdata(struct glamo_bo *bo, unsigned long offset,
+                            unsigned long size, const void *data);
 #endif