Add samsung specific changes

include/linux/qcom-dma-mapping.h

@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ & Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+/*
+ * DMA_ATTR_NO_DELAYED_UNMAP: Used by msm specific lazy mapping to indicate
+ * that the mapping can be freed on unmap, rather than when the ion_buffer
+ * is freed.
+ */
+#define DMA_ATTR_NO_DELAYED_UNMAP	(1UL << 13)
+/*
+ * When passed to a DMA map call the DMA_ATTR_FORCE_COHERENT DMA
+ * attribute can be used to force a buffer to be mapped as IO coherent.
+ */
+#define DMA_ATTR_FORCE_COHERENT			(1UL << 15)
+/*
+ * When passed to a DMA map call the DMA_ATTR_FORCE_NON_COHERENT DMA
+ * attribute can be used to force a buffer to not be mapped as IO
+ * coherent.
+ */
+#define DMA_ATTR_FORCE_NON_COHERENT		(1UL << 16)
+/*
+ * DMA_ATTR_DELAYED_UNMAP: Used by ION, it will ensure that mappings are not
+ * removed on unmap but instead are removed when the ion_buffer is freed.
+ */
+#define DMA_ATTR_DELAYED_UNMAP		(1UL << 17)
+/*
+ * DMA_ATTR_QTI_SMMU_PROXY_MAP : Map this buffer in the TVM SMMU if supported
+ * on the target.
+ */
+#define DMA_ATTR_QTI_SMMU_PROXY_MAP	(1UL << 18)
+
+#ifndef DMA_ATTR_SYS_CACHE
+/* Attributes are not supported, so render them ineffective. */
+#define DMA_ATTR_SYS_CACHE		(0UL)
+#define DMA_ATTR_SYS_CACHE_NWA		(0UL)
+#endif