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authorIngo Molnar <mingo@elte.hu>2009-04-29 14:46:59 +0200
committerIngo Molnar <mingo@elte.hu>2009-04-29 14:47:05 +0200
commite7fd5d4b3d240f42c30a9e3d20a4689c4d3a795a (patch)
tree4ba588631dd8189a818a91c9e3976526071178b6 /arch/frv/include/asm/virtconvert.h
parent1130b0296184bc21806225fd06d533515a99d2db (diff)
parent56a50adda49b2020156616c4eb15353e0f9ad7de (diff)
Merge branch 'linus' into perfcounters/core
Merge reason: This brach was on -rc1, refresh it to almost-rc4 to pick up the latest upstream fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/frv/include/asm/virtconvert.h')
-rw-r--r--arch/frv/include/asm/virtconvert.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/frv/include/asm/virtconvert.h b/arch/frv/include/asm/virtconvert.h
new file mode 100644
index 000000000000..59788fa2a813
--- /dev/null
+++ b/arch/frv/include/asm/virtconvert.h
@@ -0,0 +1,41 @@
+/* virtconvert.h: virtual/physical/page address convertion
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _ASM_VIRTCONVERT_H
+#define _ASM_VIRTCONVERT_H
+
+/*
+ * Macros used for converting between virtual and physical mappings.
+ */
+
+#ifdef __KERNEL__
+
+#include <asm/setup.h>
+
+#ifdef CONFIG_MMU
+
+#define phys_to_virt(vaddr) ((void *) ((unsigned long)(vaddr) + PAGE_OFFSET))
+#define virt_to_phys(vaddr) ((unsigned long) (vaddr) - PAGE_OFFSET)
+
+#else
+
+#define phys_to_virt(vaddr) ((void *) (vaddr))
+#define virt_to_phys(vaddr) ((unsigned long) (vaddr))
+
+#endif
+
+#define virt_to_bus virt_to_phys
+#define bus_to_virt phys_to_virt
+
+#define __page_address(page) (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))
+#define page_to_phys(page) virt_to_phys((void *)__page_address(page))
+
+#endif
+#endif