X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Fasm-avr32%2Fio.h;h=06e52b137f51e476bfb13ec104a89a88e1a7070b;hb=f12e4549b6fb01cd2654348af95a3c7a6ac161e7;hp=3c0d569233e2693933ea667075a362fe7535e3ec;hpb=3a197b2fe49d6fa03978e60af2394efe9c70b527;p=u-boot

diff --git a/include/asm-avr32/io.h b/include/asm-avr32/io.h
index 3c0d569233..06e52b137f 100644
--- a/include/asm-avr32/io.h
+++ b/include/asm-avr32/io.h
@@ -22,6 +22,8 @@
 #ifndef __ASM_AVR32_IO_H
 #define __ASM_AVR32_IO_H
 
+#include <asm/types.h>
+
 #ifdef __KERNEL__
 
 /*
@@ -93,4 +95,34 @@ 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".
+ *
+ * This implementation works for memory below 512MiB (flash, etc.) as
+ * well as above 3.5GiB (internal peripherals.)
+ */
+#define MAP_NOCACHE	(0)
+#define MAP_WRCOMBINE	(1 << 7)
+#define MAP_WRBACK	(MAP_WRCOMBINE | (1 << 9))
+#define MAP_WRTHROUGH	(MAP_WRBACK | (1 << 0))
+
+static inline void *
+map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
+{
+	if (flags == MAP_WRBACK)
+		return (void *)P1SEGADDR(paddr);
+	else
+		return (void *)P2SEGADDR(paddr);
+}
+
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long len)
+{
+
+}
+
 #endif /* __ASM_AVR32_IO_H */