efDataPreprocessing basicAlgorithmEncapsulation.h 韩正义 commit at 2021-01-15

efDataPreprocessing/dataProcessing/basicAlgorithmEncapsulation.h

@@ -64,3 +64,100 @@
  *	flush_user_range(start, end, flags)
  *
  *		Clean and invalidate a range of cache entries in the
+ *		specified address space before a change of page tables.
+ *		- start - user start address (inclusive, page aligned)
+ *		- end   - user end address   (exclusive, page aligned)
+ *		- flags - vma->vm_flags field
+ *
+ *	coherent_kern_range(start, end)
+ *
+ *		Ensure coherency between the Icache and the Dcache in the
+ *		region described by start, end.  If you have non-snooping
+ *		Harvard caches, you need to implement this function.
+ *		- start  - virtual start address
+ *		- end    - virtual end address
+ *
+ *	coherent_user_range(start, end)
+ *
+ *		Ensure coherency between the Icache and the Dcache in the
+ *		region described by start, end.  If you have non-snooping
+ *		Harvard caches, you need to implement this function.
+ *		- start  - virtual start address
+ *		- end    - virtual end address
+ *
+ *	flush_kern_dcache_area(kaddr, size)
+ *
+ *		Ensure that the data held in page is written back.
+ *		- kaddr  - page address
+ *		- size   - region size
+ *
+ *	DMA Cache Coherency
+ *	===================
+ *
+ *	dma_flush_range(start, end)
+ *
+ *		Clean and invalidate the specified virtual address range.
+ *		- start  - virtual start address
+ *		- end    - virtual end address
+ */
+
+struct cpu_cache_fns {
+	void (*flush_icache_all)(void);
+	void (*flush_kern_all)(void);
+	void (*flush_kern_louis)(void);
+	void (*flush_user_all)(void);
+	void (*flush_user_range)(unsigned long, unsigned long, unsigned int);
+
+	void (*coherent_kern_range)(unsigned long, unsigned long);
+	int  (*coherent_user_range)(unsigned long, unsigned long);
+	void (*flush_kern_dcache_area)(void *, size_t);
+
+	void (*dma_map_area)(const void *, size_t, int);
+	void (*dma_unmap_area)(const void *, size_t, int);
+
+	void (*dma_flush_range)(const void *, const void *);
+};
+
+/*
+ * Select the calling method
+ */
+#ifdef MULTI_CACHE
+
+extern struct cpu_cache_fns cpu_cache;
+
+#define __cpuc_flush_icache_all		cpu_cache.flush_icache_all
+#define __cpuc_flush_kern_all		cpu_cache.flush_kern_all
+#define __cpuc_flush_kern_louis		cpu_cache.flush_kern_louis
+#define __cpuc_flush_user_all		cpu_cache.flush_user_all
+#define __cpuc_flush_user_range		cpu_cache.flush_user_range
+#define __cpuc_coherent_kern_range	cpu_cache.coherent_kern_range
+#define __cpuc_coherent_user_range	cpu_cache.coherent_user_range
+#define __cpuc_flush_dcache_area	cpu_cache.flush_kern_dcache_area
+
+/*
+ * These are private to the dma-mapping API.  Do not use directly.
+ * Their sole purpose is to ensure that data held in the cache
+ * is visible to DMA, or data written by DMA to system memory is
+ * visible to the CPU.
+ */
+#define dmac_map_area			cpu_cache.dma_map_area
+#define dmac_unmap_area			cpu_cache.dma_unmap_area
+#define dmac_flush_range		cpu_cache.dma_flush_range
+
+#else
+
+extern void __cpuc_flush_icache_all(void);
+extern void __cpuc_flush_kern_all(void);
+extern void __cpuc_flush_kern_louis(void);
+extern void __cpuc_flush_user_all(void);
+extern void __cpuc_flush_user_range(unsigned long, unsigned long, unsigned int);
+extern void __cpuc_coherent_kern_range(unsigned long, unsigned long);
+extern int  __cpuc_coherent_user_range(unsigned long, unsigned long);
+extern void __cpuc_flush_dcache_area(void *, size_t);
+
+/*
+ * These are private to the dma-mapping API.  Do not use directly.
+ * Their sole purpose is to ensure that data held in the cache
+ * is visible to DMA, or data written by DMA to system memory is
+ * visible to the CPU.
+ */