blob: 584cbce358c5aedeff87fb780bf5f9c4b99e95ed [file] [log] [blame]
* 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 iounmap(addr) ((void)0)
#define ioremap(physaddr, size) (physaddr)
#define ioremap_nocache(physaddr, size) (physaddr)
#define ioremap_writethrough(physaddr, size) (physaddr)
#define ioremap_fullcache(physaddr, size) (physaddr)
static inline void sync(void)
* Given a physical address and a length, return a virtual address
* that can be used to access the memory range with the caching
* properties specified by "flags".
#define MAP_NOCACHE (0)
#define MAP_WRCOMBINE (0)
#define MAP_WRBACK (0)
#define MAP_WRTHROUGH (0)
static inline void *
map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
return (void *)paddr;
* Take down a mapping set up by map_physmem().
static inline void unmap_physmem(void *vaddr, unsigned long flags)
static inline phys_addr_t virt_to_phys(void * vaddr)
return (phys_addr_t)(vaddr);
#endif /* __MICROBLAZE_IO_H__ */