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/*
* linux/include/asm-arm/arch-ebsa285/io.h
*
* Copyright (C) 1997-1999 Russell King
*
* 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.
*
* Modifications:
* 06-12-1997 RMK Created.
* 07-04-1999 RMK Major cleanup
*/
#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
extern __inline__ unsigned long ___mem_pci(unsigned long a)
{
if (a <= 0xc0000000 || a >= 0xe0000000)
BUG();
return a;
}
extern __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))
#include <asm/hardware/dec21285.h>
/*
* 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) + DC21285_PCI_MEM)
#endif
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