io.h

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/*
 * linux/arch/unicore32/include/asm/io.h
 *
 * Code specific to PKUnity SoC and UniCore ISA
 *
 * Copyright (C) 2001-2010 GUAN Xue-tao
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef __UNICORE_IO_H__
#define __UNICORE_IO_H__

#ifdef __KERNEL__

#include <asm/byteorder.h>
#include <asm/memory.h>

#define PCI_IOBASE  PKUNITY_PCILIO_BASE
#include <asm-generic/io.h>

/*
 * __uc32_ioremap and __uc32_ioremap_cached takes CPU physical address.
 */
extern void __iomem *__uc32_ioremap(unsigned long, size_t);
extern void __iomem *__uc32_ioremap_cached(unsigned long, size_t);
extern void __uc32_iounmap(volatile void __iomem *addr);

/*
 * ioremap and friends.
 *
 * ioremap takes a PCI memory address, as specified in
 * Documentation/io-mapping.txt.
 *
 */
#define ioremap(cookie, size)       __uc32_ioremap(cookie, size)
#define ioremap_cached(cookie, size)    __uc32_ioremap_cached(cookie, size)
#define ioremap_nocache(cookie, size)   __uc32_ioremap(cookie, size)
#define iounmap(cookie)         __uc32_iounmap(cookie)

#define HAVE_ARCH_PIO_SIZE
#define PIO_OFFSET      (unsigned int)(PCI_IOBASE)
#define PIO_MASK        (unsigned int)(IO_SPACE_LIMIT)
#define PIO_RESERVED        (PIO_OFFSET + PIO_MASK + 1)

#endif  /* __KERNEL__ */
#endif  /* __UNICORE_IO_H__ */