From 63a11be68306870e04d3851ed9fa41955cdf4894 Mon Sep 17 00:00:00 2001
From: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Date: Tue, 15 Jan 2008 23:06:17 +0900
Subject: [PATCH] sh: Add support of map_physmem() and unmap_physmem() to
SuperH
This patch add the support of map_physmem() and unmap_physmem()
used with Common Flash Interface(CFI) driver.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
include/asm-sh/io.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h
index 03427ad33b..51fd10b566 100644
--- a/include/asm-sh/io.h
+++ b/include/asm-sh/io.h
@@ -227,5 +227,32 @@ out:
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 /* __KERNEL__ */
#endif /* __ASM_SH_IO_H */
--
2.39.5