diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-frv/virtconvert.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-frv/virtconvert.h')
-rw-r--r-- | include/asm-frv/virtconvert.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/asm-frv/virtconvert.h b/include/asm-frv/virtconvert.h new file mode 100644 index 000000000000..a29a0aec291f --- /dev/null +++ b/include/asm-frv/virtconvert.h | |||
@@ -0,0 +1,42 @@ | |||
1 | /* virtconvert.h: virtual/physical/page address convertion | ||
2 | * | ||
3 | * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. | ||
4 | * Written by David Howells (dhowells@redhat.com) | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public License | ||
8 | * as published by the Free Software Foundation; either version | ||
9 | * 2 of the License, or (at your option) any later version. | ||
10 | */ | ||
11 | #ifndef _ASM_VIRTCONVERT_H | ||
12 | #define _ASM_VIRTCONVERT_H | ||
13 | |||
14 | /* | ||
15 | * Macros used for converting between virtual and physical mappings. | ||
16 | */ | ||
17 | |||
18 | #ifdef __KERNEL__ | ||
19 | |||
20 | #include <linux/config.h> | ||
21 | #include <asm/setup.h> | ||
22 | |||
23 | #ifdef CONFIG_MMU | ||
24 | |||
25 | #define phys_to_virt(vaddr) ((void *) ((unsigned long)(vaddr) + PAGE_OFFSET)) | ||
26 | #define virt_to_phys(vaddr) ((unsigned long) (vaddr) - PAGE_OFFSET) | ||
27 | |||
28 | #else | ||
29 | |||
30 | #define phys_to_virt(vaddr) ((void *) (vaddr)) | ||
31 | #define virt_to_phys(vaddr) ((unsigned long) (vaddr)) | ||
32 | |||
33 | #endif | ||
34 | |||
35 | #define virt_to_bus virt_to_phys | ||
36 | #define bus_to_virt phys_to_virt | ||
37 | |||
38 | #define __page_address(page) (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT)) | ||
39 | #define page_to_phys(page) virt_to_phys((void *)__page_address(page)) | ||
40 | |||
41 | #endif | ||
42 | #endif | ||