io.h
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上传日期:2009-04-28
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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) ((void __iomem *)(PCIO_BASE + (a)))
- #if 1
- #define __mem_pci(a) (a)
- #define __mem_isa(a) ((a) + PCIMEM_BASE)
- #else
- static inline void __iomem *___mem_pci(void __iomem *p)
- {
- unsigned long a = (unsigned long)p;
- BUG_ON(a <= 0xc0000000 || a >= 0xe0000000);
- return p;
- }
- static inline void __iomem *___mem_isa(void __iomem *p)
- {
- unsigned long a = (unsigned long)p;
- BUG_ON(a >= 16*1048576);
- return p + PCIMEM_BASE;
- }
- #define __mem_pci(a) ___mem_pci(a)
- #define __mem_isa(a) ___mem_isa(a)
- #endif
- #endif