Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* kmap.c: ioremapping handlers |
| 2 | * |
| 3 | * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved. |
| 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | * - Derived from arch/m68k/mm/kmap.c |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | */ |
| 12 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/mm.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/string.h> |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/vmalloc.h> |
| 18 | |
| 19 | #include <asm/setup.h> |
| 20 | #include <asm/segment.h> |
| 21 | #include <asm/page.h> |
| 22 | #include <asm/pgalloc.h> |
| 23 | #include <asm/io.h> |
| 24 | #include <asm/system.h> |
| 25 | |
| 26 | #undef DEBUG |
| 27 | |
| 28 | /*****************************************************************************/ |
| 29 | /* |
| 30 | * Map some physical address range into the kernel address space. |
| 31 | */ |
| 32 | |
Al Viro | 3f4cd38 | 2006-06-23 02:04:03 -0700 | [diff] [blame] | 33 | void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | { |
Al Viro | 3f4cd38 | 2006-06-23 02:04:03 -0700 | [diff] [blame] | 35 | return (void __iomem *)physaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | /* |
| 39 | * Unmap a ioremap()ed region again |
| 40 | */ |
Al Viro | 3f4cd38 | 2006-06-23 02:04:03 -0700 | [diff] [blame] | 41 | void iounmap(void volatile __iomem *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | { |
| 43 | } |
| 44 | |
| 45 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | * Set new cache mode for some kernel address space. |
| 47 | * The caller must push data for that range itself, if such data may already |
| 48 | * be in the cache. |
| 49 | */ |
| 50 | void kernel_set_cachemode(void *addr, unsigned long size, int cmode) |
| 51 | { |
| 52 | } |