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/*

 * linux/include/asm-arm/arch-nexuspci/io.h

 *

 * Copyright (C) 1997-1999 Russell King

 * Copyright (C) 2000 FutureTV Labs Ltd.

 */

#ifndef __ASM_ARM_ARCH_IO_H

#define __ASM_ARM_ARCH_IO_H

#define IO_SPACE_LIMIT 0xffff

/*

 * Translation of various region addresses to virtual addresses

 */

#define __io(a)                 (PCIO_BASE + (a))

#if 1

#define __mem_pci(a)            ((unsigned long)(a))

#define __mem_isa(a)            (PCIMEM_BASE + (unsigned long)(a))

#else

static inline unsigned long ___mem_pci(unsigned long a)

{

        /* PCI addresses must have been ioremapped */

        if (a <= 0xc0000000 || a >= 0xe0000000)

                *((int *)0) = 0;

        return a;

}

static inline unsigned long ___mem_isa(unsigned long a)

{

        if (a >= 16*1048576)

                BUG();

        return PCIMEM_BASE + a;

}

#define __mem_pci(a)            ___mem_pci((unsigned long)(a))

#define __mem_isa(a)            ___mem_isa((unsigned long)(a))

#endif

/*

 * Generic virtual read/write

 */

#define __arch_getw(a)          (*(volatile unsigned short *)(a))

#define __arch_putw(v,a)        (*(volatile unsigned short *)(a) = (v))

/*

 * ioremap support - validate a PCI memory address,

 * and convert a PCI memory address to a physical

 * address for the page tables.

 */

#define iomem_valid_addr(iomem,sz)      \

        ((iomem) < 0x80000000 && (iomem) + (sz) <= 0x80000000)

#define iomem_to_phys(iomem)    ((iomem) + PLX_MEM_START)

#endif