Introduce map_physmem() and unmap_physmem()

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

diff --git a/include/asm-blackfin/io.h b/include/asm-blackfin/io.h
index 332d2c643745f6aa12b4a865c9710b5e2a55fa8f..512e13d1ca6678e5165eddaae69cfa412343fc7d 100644 (file)
--- a/include/asm-blackfin/io.h
+++ b/include/asm-blackfin/io.h
@@ -40,6 +40,32 @@ static inline void sync(void)
        __builtin_bfin_ssync();
 }
 
+/*
+ * 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)
+{
+
+}
+
 /*
  * These are for ISA/PCI shared memory _only_ and should never be used
  * on any other type of memory, including Zorro memory. They are meant to