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/* Generic I/O port emulation, based on MN10300 code
*
* Copyright (C) 2007 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 Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef __ASM_GENERIC_IO_TYPECONFUSED_H
#define __ASM_GENERIC_IO_TYPECONFUSED_H
#include <linux/string.h> /* for memset() and memcpy() */
#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/byteorder.h>
/*****************************************************************************/
/*
* Unlike the definitions in <asm-generic/io.h>, these macros don't complain
* about integer arguments and just silently cast them to pointers. This is
* a common cause of bugs, but lots of existing code depends on this, so
* this header is provided as a transitory measure.
*/
#ifndef __raw_readb
#define __raw_readb(a) (__chk_io_ptr(a), *(volatile unsigned char __force *)(a))
#endif
#ifndef __raw_readw
#define __raw_readw(a) (__chk_io_ptr(a), *(volatile unsigned short __force *)(a))
#endif
#ifndef __raw_readl
#define __raw_readl(a) (__chk_io_ptr(a), *(volatile unsigned int __force *)(a))
#endif
#ifndef readb
#define readb __raw_readb
#endif
#ifndef readw
#define readw(addr) __le16_to_cpu(__raw_readw(addr))
#endif
#ifndef readl
#define readl(addr) __le32_to_cpu(__raw_readl(addr))
#endif
#ifndef __raw_writeb
#define __raw_writeb(v,a) (__chk_io_ptr(a), *(volatile unsigned char __force *)(a) = (v))
#endif
#ifndef __raw_writew
#define __raw_writew(v,a) (__chk_io_ptr(a), *(volatile unsigned short __force *)(a) = (v))
#endif
#ifndef __raw_writel
#define __raw_writel(v,a) (__chk_io_ptr(a), *(volatile unsigned int __force *)(a) = (v))
#endif
#ifndef writeb
#define writeb __raw_writeb
#endif
#ifndef writew
#define writew(b,addr) __raw_writew(__cpu_to_le16(b),addr)
#endif
#ifndef writel
#define writel(b,addr) __raw_writel(__cpu_to_le32(b),addr)
#endif
#endif /* __ASM_GENERIC_IO_TYPECONFUSED_H */
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