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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _ARCH_IO_H
#define _ARCH_IO_H
#define readb(_a) (*(volatile unsigned char *) (_a))
#define readw(_a) (*(volatile unsigned short *) (_a))
#define readl(_a) (*(volatile unsigned long *) (_a))
#define writeb(_v, _a) (*(volatile unsigned char *) (_a) = (_v))
#define writew(_v, _a) (*(volatile unsigned short *) (_a) = (_v))
#define writel(_v, _a) (*(volatile unsigned long *) (_a) = (_v))
static inline unsigned long inl(int port)
{
unsigned long val;
__asm__ __volatile__("inl %w1, %0" : "=a"(val) : "Nd"(port));
return val;
}
static inline unsigned short inw(int port)
{
unsigned short val;
__asm__ __volatile__("inw %w1, %w0" : "=a"(val) : "Nd"(port));
return val;
}
static inline unsigned char inb(int port)
{
unsigned char val;
__asm__ __volatile__("inb %w1, %b0" : "=a"(val) : "Nd"(port));
return val;
}
static inline void outl(unsigned long val, int port)
{
__asm__ __volatile__("outl %0, %w1" : : "a"(val), "Nd"(port));
}
static inline void outw(unsigned short val, int port)
{
__asm__ __volatile__("outw %w0, %w1" : : "a"(val), "Nd"(port));
}
static inline void outb(unsigned char val, int port)
{
__asm__ __volatile__("outb %b0, %w1" : : "a"(val), "Nd"(port));
}
#endif
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