Signed-off-by: Anton Staaf <robotboy@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Scott McNutt <smcnutt@psyent.com>
extern void flush_dcache (unsigned long start, unsigned long size);
extern void flush_icache (unsigned long start, unsigned long size);
+/*
+ * Valid L1 data cache line sizes for the NIOS2 architecture are 4, 16, and 32
+ * bytes. If the board configuration has not specified one we default to the
+ * largest of these values for alignment of DMA buffers.
+ */
+#ifdef CONFIG_SYS_CACHELINE_SIZE
+#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE
+#else
+#define ARCH_DMA_MINALIGN 32
+#endif
+
#endif /* __ASM_NIOS2_CACHE_H_ */