[deliverable/linux.git] / include / linux / io.h

/*
 * Copyright 2006 PathScale, Inc.  All Rights Reserved.
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifndef _LINUX_IO_H
#define _LINUX_IO_H

#include <linux/types.h>
#include <asm/io.h>
#include <asm/page.h>

struct device;

void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
void __iowrite64_copy(void __iomem *to, const void *from, size_t count);

#ifdef CONFIG_MMU
int ioremap_page_range(unsigned long addr, unsigned long end,
		       unsigned long phys_addr, pgprot_t prot);
#else
static inline int ioremap_page_range(unsigned long addr, unsigned long end,
				     unsigned long phys_addr, pgprot_t prot)
{
	return 0;
}
#endif

/*
 * Managed iomap interface
 */
#ifdef CONFIG_HAS_IOPORT
void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
			       unsigned int nr);
void devm_ioport_unmap(struct device *dev, void __iomem *addr);
#else
static inline void __iomem *devm_ioport_map(struct device *dev,
					     unsigned long port,
					     unsigned int nr)
{
	return NULL;
}

static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr)
{
}
#endif

void __iomem * devm_ioremap(struct device *dev, unsigned long offset,
			    unsigned long size);
void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset,
				    unsigned long size);
void devm_iounmap(struct device *dev, void __iomem *addr);
int check_signature(const volatile void __iomem *io_addr,
			const unsigned char *signature, int length);

#endif /* _LINUX_IO_H */
Commit	Line	Data
	1	/*
	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
	21	#include <linux/types.h>
	22	#include <asm/io.h>
	23	#include <asm/page.h>
	24
	25	struct device;
	26
	27	void __iowrite32_copy(void __iomem to, const void from, size_t count);
	28	void __iowrite64_copy(void __iomem to, const void from, size_t count);
	29
	30	#ifdef CONFIG_MMU
	31	int ioremap_page_range(unsigned long addr, unsigned long end,
	32	unsigned long phys_addr, pgprot_t prot);
	33	#else
	34	static 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
	40
	41	/*
	42	* Managed iomap interface
	43	*/
	44	#ifdef CONFIG_HAS_IOPORT
	45	void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
	46	unsigned int nr);
	47	void devm_ioport_unmap(struct device dev, void __iomem addr);
	48	#else
	49	static inline void __iomem devm_ioport_map(struct device dev,
	50	unsigned long port,
	51	unsigned int nr)
	52	{
	53	return NULL;
	54	}
	55
	56	static inline void devm_ioport_unmap(struct device dev, void __iomem addr)
	57	{
	58	}
	59	#endif
	60
	61	void __iomem * devm_ioremap(struct device *dev, unsigned long offset,
	62	unsigned long size);
	63	void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset,
	64	unsigned long size);
	65	void devm_iounmap(struct device dev, void __iomem addr);
	66	int check_signature(const volatile void __iomem *io_addr,
	67	const unsigned char *signature, int length);
	68
	69	#endif /* _LINUX_IO_H */