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io.h

/*
 * arch/arm/mach-shark/include/mach/io.h
 *
 * by Alexander Schulz
 *
 * derived from:
 * arch/arm/mach-ebsa110/include/mach/io.h
 * Copyright (C) 1997,1998 Russell King
 */

#ifndef __ASM_ARM_ARCH_IO_H
#define __ASM_ARM_ARCH_IO_H

#include <mach/hardware.h>

#define IO_SPACE_LIMIT 0xffffffff

/*
 * We use two different types of addressing - PC style addresses, and ARM
 * addresses.  PC style accesses the PC hardware with the normal PC IO
 * addresses, eg 0x3f8 for serial#1.  ARM addresses are 0x80000000+
 * and are translated to the start of IO.
 */
#define __PORT_PCIO(x)  (!((x) & 0x80000000))

#define __io(a)                 ((void __iomem *)(PCIO_BASE + (a)))


static inline unsigned int __ioaddr (unsigned int port)                 \
{                                                           \
      if (__PORT_PCIO(port))                                      \
            return (unsigned int)(PCIO_BASE + (port));                  \
      else                                                  \
            return (unsigned int)(IO_BASE + (port));              \
}

#define __mem_pci(addr) (addr)

/*
 * Translated address IO functions
 *
 * IO address has already been translated to a virtual address
 */
#define outb_t(v,p)                                               \
      (*(volatile unsigned char *)(p) = (v))

#define inb_t(p)                                            \
      (*(volatile unsigned char *)(p))

#define outl_t(v,p)                                               \
      (*(volatile unsigned long *)(p) = (v))

#define inl_t(p)                                            \
      (*(volatile unsigned long *)(p))

#endif

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