--- zzzz-none-000/linux-5.4.213/arch/arm64/mm/flush.c	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/arch/arm64/mm/flush.c	2024-08-14 09:01:29.000000000 +0000
@@ -92,3 +92,39 @@
 }
 EXPORT_SYMBOL_GPL(arch_invalidate_pmem);
 #endif
+
+void dmac_flush_range(const void *start, const void *end)
+{
+	__dma_flush_area(start, (void *)(end) - (void *)(start));
+}
+EXPORT_SYMBOL(dmac_flush_range);
+
+void dmac_inv_range(const void *start, const void *end)
+{
+	__dma_inv_area(start, (void *)(end) - (void *)(start));
+}
+EXPORT_SYMBOL(dmac_inv_range);
+
+void dmac_clean_range(const void *start, const void *end)
+{
+	__dma_clean_area(start, (void *)(end) - (void *)(start));
+}
+EXPORT_SYMBOL(dmac_clean_range);
+
+void dmac_flush_range_no_dsb(const void *start, const void *end)
+{
+	__dma_flush_area_no_dsb(start, (void *)(end) - (void *)(start));
+}
+EXPORT_SYMBOL(dmac_flush_range_no_dsb);
+
+void dmac_inv_range_no_dsb(const void *start, const void *end)
+{
+	__dma_inv_area_no_dsb(start, (void *)(end) - (void *)(start));
+}
+EXPORT_SYMBOL(dmac_inv_range_no_dsb);
+
+void dmac_clean_range_no_dsb(const void *start, const void *end)
+{
+	__dma_clean_area_no_dsb(start, (void *)(end) - (void *)(start));
+}
+EXPORT_SYMBOL(dmac_clean_range_no_dsb);