Blackfin arch: move bfin_addr_dcachable() and friends into the cacheflush header where it belongs

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/arch/blackfin/include/asm/cacheflush.h b/arch/blackfin/include/asm/cacheflush.h
index 5ef9e35e9c3b..c2d5b6c9fb4d 100644
--- a/arch/blackfin/include/asm/cacheflush.h
+++ b/arch/blackfin/include/asm/cacheflush.h
@@ -85,4 +85,21 @@ do { memcpy(dst, src, len); \
 # define flush_dcache_page(page)                        do { } while (0)
 #endif
 
+extern unsigned long reserved_mem_dcache_on;
+extern unsigned long reserved_mem_icache_on;
+
+static inline int bfin_addr_dcachable(unsigned long addr)
+{
+#ifdef CONFIG_BFIN_DCACHE
+        if (addr < (_ramend - DMA_UNCACHED_REGION))
+                return 1;
+#endif
+
+        if (reserved_mem_dcache_on &&
+                addr >= _ramend && addr < physical_mem_end)
+                return 1;
+
+        return 0;
+}
+
 #endif                          /* _BLACKFIN_ICACHEFLUSH_H */