- 根目录:
- arch
- mips
- include
- asm
- mach-generic
- spaces.h
#ifndef _ASM_MACH_GENERIC_SPACES_H
#define _ASM_MACH_GENERIC_SPACES_H
#include <linux/const.h>
#ifndef PHYS_OFFSET
#define PHYS_OFFSET _AC(0, UL)
#endif
#ifdef CONFIG_32BIT
#define CAC_BASE _AC(0x80000000, UL)
#define IO_BASE _AC(0xa0000000, UL)
#define UNCAC_BASE _AC(0xa0000000, UL)
#ifndef MAP_BASE
#define MAP_BASE _AC(0xc0000000, UL)
#endif
#ifndef HIGHMEM_START
#define HIGHMEM_START _AC(0x20000000, UL)
#endif
#endif
#ifdef CONFIG_64BIT
#ifndef CAC_BASE
#ifdef CONFIG_DMA_NONCOHERENT
#define CAC_BASE _AC(0x9800000000000000, UL)
#else
#define CAC_BASE _AC(0xa800000000000000, UL)
#endif
#endif
#ifndef IO_BASE
#define IO_BASE _AC(0x9000000000000000, UL)
#endif
#ifndef UNCAC_BASE
#define UNCAC_BASE _AC(0x9000000000000000, UL)
#endif
#ifndef MAP_BASE
#define MAP_BASE _AC(0xc000000000000000, UL)
#endif
#ifndef HIGHMEM_START
#define HIGHMEM_START (_AC(1, UL) << _AC(59, UL))
#endif
#define TO_PHYS(x) ( ((x) & TO_PHYS_MASK))
#define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK))
#define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK))
#endif
#ifndef PAGE_OFFSET
#define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET)
#endif
#ifndef FIXADDR_TOP
#define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000)
#endif
#endif
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