--- zzzz-none-000/linux-5.4.213/arch/arm/include/asm/cacheflush.h	2022-09-15 10:04:56.000000000 +0000
+++ miami-7690-761/linux-5.4.213/arch/arm/include/asm/cacheflush.h	2024-05-29 11:19:50.000000000 +0000
@@ -91,6 +91,21 @@
  *	DMA Cache Coherency
  *	===================
  *
+ *	dma_inv_range(start, end)
+ *
+ *		Invalidate (discard) the specified virtual address range.
+ *		May not write back any entries.  If 'start' or 'end'
+ *		are not cache line aligned, those lines must be written
+ *		back.
+ *		- start  - virtual start address
+ *		- end    - virtual end address
+ *
+ *	dma_clean_range(start, end)
+ *
+ *		Clean (write back) the specified virtual address range.
+ *		- start  - virtual start address
+ *		- end    - virtual end address
+ *
  *	dma_flush_range(start, end)
  *
  *		Clean and invalidate the specified virtual address range.
@@ -112,7 +127,12 @@
 	void (*dma_map_area)(const void *, size_t, int);
 	void (*dma_unmap_area)(const void *, size_t, int);
 
+	void (*dma_inv_range)(const void *, const void *);
+	void (*dma_inv_range_no_dsb)(const void *, const void *);
+	void (*dma_clean_range)(const void *, const void *);
+	void (*dma_clean_range_no_dsb)(const void *, const void *);
 	void (*dma_flush_range)(const void *, const void *);
+	void (*dma_flush_range_no_dsb)(const void *, const void *);
 } __no_randomize_layout;
 
 /*
@@ -137,7 +157,12 @@
  * is visible to DMA, or data written by DMA to system memory is
  * visible to the CPU.
  */
+#define dmac_inv_range			cpu_cache.dma_inv_range
+#define dmac_inv_range_no_dsb		cpu_cache.dma_inv_range_no_dsb
+#define dmac_clean_range		cpu_cache.dma_clean_range
+#define dmac_clean_range_no_dsb		cpu_cache.dma_clean_range_no_dsb
 #define dmac_flush_range		cpu_cache.dma_flush_range
+#define dmac_flush_range_no_dsb		cpu_cache.dma_flush_range_no_dsb
 
 #else
 
@@ -156,7 +181,12 @@
  * is visible to DMA, or data written by DMA to system memory is
  * visible to the CPU.
  */
+extern void dmac_inv_range(const void *start, const void *end);
+extern void dmac_inv_range_no_dsb(const void *start, const void *end);
+extern void dmac_clean_range(const void *start, const void *end);
+extern void dmac_clean_range_no_dsb(const void *start, const void *end);
 extern void dmac_flush_range(const void *, const void *);
+extern void dmac_flush_range_no_dsb(const void *, const void *);
 
 #endif