blob: cdad251fba9ff1802d7f311c660f08b0d9fa0d71 [file] [log] [blame]
* include/asm-v850/io.h -- Misc I/O operations
* Copyright (C) 2001,02,03,04,05 NEC Electronics Corporation
* Copyright (C) 2001,02,03,04,05 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 <>
#ifndef __V850_IO_H__
#define __V850_IO_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 long __v = (*(volatile unsigned long *) (addr)); __v; })
#define readb_relaxed(a) readb(a)
#define readw_relaxed(a) readw(a)
#define readl_relaxed(a) readl(a)
#define writeb(val, addr) \
(void)((*(volatile unsigned char *) (addr)) = (val))
#define writew(val, addr) \
(void)((*(volatile unsigned short *) (addr)) = (val))
#define writel(val, addr) \
(void)((*(volatile unsigned int *) (addr)) = (val))
#define __raw_readb readb
#define __raw_readw readw
#define __raw_readl readl
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
#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))
#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))
static inline void insb (unsigned long port, void *dst, unsigned long count)
unsigned char *p = dst;
while (count--)
*p++ = inb (port);
static inline void insw (unsigned long port, void *dst, unsigned long count)
unsigned short *p = dst;
while (count--)
*p++ = inw (port);
static inline void insl (unsigned long port, void *dst, unsigned long count)
unsigned long *p = dst;
while (count--)
*p++ = inl (port);
static inline void
outsb (unsigned long port, const void *src, unsigned long count)
const unsigned char *p = src;
while (count--)
outb (*p++, port);
static inline void
outsw (unsigned long port, const void *src, unsigned long count)
const unsigned short *p = src;
while (count--)
outw (*p++, port);
static inline void
outsl (unsigned long port, const void *src, unsigned long count)
const unsigned long *p = src;
while (count--)
outl (*p++, port);
/* Some places try to pass in an loff_t for PHYSADDR (?!), so we cast it to
long before casting it to a pointer to avoid compiler warnings. */
#define ioremap(physaddr, size) ((void __iomem *)(unsigned long)(physaddr))
#define iounmap(addr) ((void)0)
#define ioremap_nocache(physaddr, size) ioremap (physaddr, size)
#define ioremap_writethrough(physaddr, size) ioremap (physaddr, size)
#define ioremap_fullcache(physaddr, size) ioremap (physaddr, size)
#define ioread8(addr) readb (addr)
#define ioread16(addr) readw (addr)
#define ioread32(addr) readl (addr)
#define iowrite8(val, addr) writeb (val, addr)
#define iowrite16(val, addr) writew (val, addr)
#define iowrite32(val, addr) writel (val, addr)
#define mmiowb()
#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
#if 0
/* This is really stupid; don't define it. */
#define page_to_bus(page) page_to_phys (page)
/* Conversion between virtual and physical mappings. */
#define phys_to_virt(addr) ((void *)__phys_to_virt (addr))
#define virt_to_phys(addr) ((unsigned long)__virt_to_phys (addr))
#define memcpy_fromio(dst, src, len) memcpy (dst, (void *)src, len)
#define memcpy_toio(dst, src, len) memcpy ((void *)dst, src, len)
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
* access
#define xlate_dev_mem_ptr(p) __va(p)
* Convert a virtual cached pointer to an uncached pointer
#define xlate_dev_kmem_ptr(p) p
#endif /* __V850_IO_H__ */