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/* SPDX-License-Identifier: GPL-2.0+ */
* include/asm-microblaze/io.h -- Misc I/O operations
* Copyright (C) 2003 John Williams <>
* Copyright (C) 2001,02 NEC Corporation
* Copyright (C) 2001,02 Miles Bader <>
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
* archive for more details.
* Written by Miles Bader <>
* Microblaze port by John Williams
#ifndef __MICROBLAZE_IO_H__
#define __MICROBLAZE_IO_H__
#include <asm/types.h>
#define readb(addr) \
({ unsigned char __v = (*(volatile unsigned char *)(addr)); __v; })
#define readw(addr) \
({ unsigned short __v = (*(volatile unsigned short *)(addr)); __v; })
#define readl(addr) \
({ unsigned int __v = (*(volatile unsigned int *)(addr)); __v; })
#define writeb(b, addr) \
(void)((*(volatile unsigned char *)(addr)) = (b))
#define writew(b, addr) \
(void)((*(volatile unsigned short *)(addr)) = (b))
#define writel(b, addr) \
(void)((*(volatile unsigned int *)(addr)) = (b))
#define memset_io(a, b, c) memset((void *)(a), (b), (c))
#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
#define inb(addr) readb(addr)
#define inw(addr) readw(addr)
#define inl(addr) readl(addr)
#define outb(x, addr) ((void)writeb(x, addr))
#define outw(x, addr) ((void)writew(x, addr))
#define outl(x, addr) ((void)writel(x, addr))
/* Some #definitions to keep strange Xilinx code happy */
#define in_8(addr) readb(addr)
#define in_be16(addr) readw(addr)
#define in_be32(addr) readl(addr)
#define out_8(addr, x) outb(x, addr)
#define out_be16(addr, x) outw(x, addr)
#define out_be32(addr, x) outl(x, addr)
#define inb_p(port) inb((port))
#define outb_p(val, port) outb((val), (port))
#define inw_p(port) inw((port))
#define outw_p(val, port) outw((val), (port))
#define inl_p(port) inl((port))
#define outl_p(val, port) outl((val), (port))
/* Some defines to keep the MTD flash drivers happy */
#define __raw_readb readb
#define __raw_readw readw
#define __raw_readl readl
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
static inline void io_insb(unsigned long port, void *dst, unsigned long count)
unsigned char *p = dst;
while (count--)
*p++ = inb(port);
static inline void io_insw(unsigned long port, void *dst, unsigned long count)
unsigned short *p = dst;
while (count--)
*p++ = inw(port);
static inline void io_insl(unsigned long port, void *dst, unsigned long count)
unsigned long *p = dst;
while (count--)
*p++ = inl(port);
static inline void
io_outsb(unsigned long port, const void *src, unsigned long count)
const unsigned char *p = src;
while (count--)
outb(*p++, port);
static inline void
io_outsw(unsigned long port, const void *src, unsigned long count)
const unsigned short *p = src;
while (count--)
outw(*p++, port);
static inline void
io_outsl(unsigned long port, const void *src, unsigned long count)
const unsigned long *p = src;
while (count--)
outl(*p++, port);
#define outsb(a, b, l) io_outsb(a, b, l)
#define outsw(a, b, l) io_outsw(a, b, l)
#define outsl(a, b, l) io_outsl(a, b, l)
#define insb(a, b, l) io_insb(a, b, l)
#define insw(a, b, l) io_insw(a, b, l)
#define insl(a, b, l) io_insl(a, b, l)
#define ioremap_nocache(physaddr, size) (physaddr)
#define ioremap_writethrough(physaddr, size) (physaddr)
#define ioremap_fullcache(physaddr, size) (physaddr)
static inline void sync(void)
#include <asm-generic/io.h>
#endif /* __MICROBLAZE_IO_H__ */