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/*
* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
* Scott McNutt <smcnutt@psyent.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* 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.
*
*/
#ifndef __ASM_NIOS2_IO_H_
#define __ASM_NIOS2_IO_H_
#include <asm/byteorder.h>
#define IO_SPACE_LIMIT 0
#define __raw_writeb(v, a) (*(volatile unsigned char *)(a) = (v))
#define __raw_writew(v, a) (*(volatile unsigned short *)(a) = (v))
#define __raw_writel(v, a) (*(volatile unsigned int *)(a) = (v))
#define __raw_readb(a) (*(volatile unsigned char *)(a))
#define __raw_readw(a) (*(volatile unsigned short *)(a))
#define __raw_readl(a) (*(volatile unsigned int *)(a))
#define readb(addr)\
({unsigned char val;\
asm volatile("ldbio %0, 0(%1)" : "=r"(val) : "r" (addr)); val; })
#define readw(addr)\
({unsigned short val;\
asm volatile("ldhio %0, 0(%1)" : "=r"(val) : "r" (addr)); val; })
#define readl(addr)\
({unsigned int val;\
asm volatile("ldwio %0, 0(%1)" : "=r"(val) : "r" (addr)); val; })
#define writeb(val, addr)\
asm volatile("stbio %0, 0(%1)" : : "r" (val), "r" (addr))
#define writew(val, addr)\
asm volatile ("sthio %0, 0(%1)" : : "r" (val), "r" (addr))
#define writel(val, addr)\
asm volatile("stwio %0, 0(%1)" : : "r" (val), "r" (addr))
#endif /* __ASM_NIOS2_IO_H_ */
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