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Bryan O'Sullivanc27a0d72006-02-01 03:05:16 -08001/*
2 * Copyright 2006 PathScale, Inc. All Rights Reserved.
3 *
4 * This file is free software; you can redistribute it and/or modify
5 * it under the terms of version 2 of the GNU General Public License
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
16 */
17
18#ifndef _LINUX_IO_H
19#define _LINUX_IO_H
20
Al Virocb1055f2006-10-08 15:08:45 +010021#include <linux/types.h>
Bryan O'Sullivanc27a0d72006-02-01 03:05:16 -080022#include <asm/io.h>
Haavard Skinnemoen74588d82006-09-30 23:29:12 -070023#include <asm/page.h>
Bryan O'Sullivanc27a0d72006-02-01 03:05:16 -080024
Andrew Morton7f253772007-02-02 18:07:15 -080025struct device;
26
Bryan O'Sullivanc27a0d72006-02-01 03:05:16 -080027void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
Brice Goglin22ae8132006-06-20 20:03:02 -070028void __iowrite64_copy(void __iomem *to, const void *from, size_t count);
Bryan O'Sullivanc27a0d72006-02-01 03:05:16 -080029
Paul Mundt218f0aa2007-05-15 01:41:02 -070030#ifdef CONFIG_MMU
Haavard Skinnemoen74588d82006-09-30 23:29:12 -070031int ioremap_page_range(unsigned long addr, unsigned long end,
32 unsigned long phys_addr, pgprot_t prot);
Paul Mundt218f0aa2007-05-15 01:41:02 -070033#else
34static inline int ioremap_page_range(unsigned long addr, unsigned long end,
35 unsigned long phys_addr, pgprot_t prot)
36{
37 return 0;
38}
39#endif
Haavard Skinnemoen74588d82006-09-30 23:29:12 -070040
Tejun Heo9ac78492007-01-20 16:00:26 +090041/*
42 * Managed iomap interface
43 */
Russell King93da2872007-04-17 00:32:26 -070044#ifdef CONFIG_HAS_IOPORT
Tejun Heo9ac78492007-01-20 16:00:26 +090045void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
46 unsigned int nr);
47void devm_ioport_unmap(struct device *dev, void __iomem *addr);
Russell King93da2872007-04-17 00:32:26 -070048#else
49static inline void __iomem *devm_ioport_map(struct device *dev,
50 unsigned long port,
51 unsigned int nr)
52{
53 return NULL;
54}
55
56static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr)
57{
58}
59#endif
Tejun Heo9ac78492007-01-20 16:00:26 +090060
61void __iomem * devm_ioremap(struct device *dev, unsigned long offset,
62 unsigned long size);
63void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset,
64 unsigned long size);
65void devm_iounmap(struct device *dev, void __iomem *addr);
Andrew Mortoncc2ea412007-07-15 23:41:38 -070066int check_signature(const volatile void __iomem *io_addr,
67 const unsigned char *signature, int length);
Matthew Wilcoxe50190a2006-10-11 01:22:02 -070068
Bryan O'Sullivanc27a0d72006-02-01 03:05:16 -080069#endif /* _LINUX_IO_H */