2 * linux/include/asm-arm/arch-ebsa285/io.h
4 * Copyright (C) 1997-1999 Russell King
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 * 06-12-1997 RMK Created.
12 * 07-04-1999 RMK Major cleanup
14 #ifndef __ASM_ARM_ARCH_IO_H
15 #define __ASM_ARM_ARCH_IO_H
17 #define IO_SPACE_LIMIT 0xffff
20 * Translation of various region addresses to virtual addresses
22 #define __io(a) ((void __iomem *)(PCIO_BASE + (a)))
24 #define __mem_pci(a) (a)
25 #define __mem_isa(a) ((a) + PCIMEM_BASE)
28 static inline void __iomem *___mem_pci(void __iomem *p)
30 unsigned long a = (unsigned long)p;
31 BUG_ON(a <= 0xc0000000 || a >= 0xe0000000);
35 static inline void __iomem *___mem_isa(void __iomem *p)
37 unsigned long a = (unsigned long)p;
38 BUG_ON(a >= 16*1048576);
39 return p + PCIMEM_BASE;
41 #define __mem_pci(a) ___mem_pci(a)
42 #define __mem_isa(a) ___mem_isa(a)