Introduce map_physmem() and unmap_physmem()

[karo-tx-uboot.git] / include / asm-nios / io.h

diff --git a/include/asm-nios/io.h b/include/asm-nios/io.h
index 08e46a3711170e0503368d210c7a4fb1734c56b8..6fc339fb01994fed03b435b0e5c5dd40ad9f0ea6 100644 (file)
--- a/include/asm-nios/io.h
+++ b/include/asm-nios/io.h
@@ -109,4 +109,30 @@ static inline void sync(void)
 {
 }
 
+/*
+ * Given a physical address and a length, return a virtual address
+ * that can be used to access the memory range with the caching
+ * properties specified by "flags".
+ */
+typedef unsigned long phys_addr_t;
+
+#define MAP_NOCACHE    (0)
+#define MAP_WRCOMBINE  (0)
+#define MAP_WRBACK     (0)
+#define MAP_WRTHROUGH  (0)
+
+static inline void *
+map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
+{
+       return (void *)paddr;
+}
+
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long flags)
+{
+
+}
+
 #endif /* __ASM_NIOS_IO_H_ */