spaces.h

来自「优龙2410linux2.6.8内核源代码」· C头文件 代码 · 共 35 行

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1996, 99 Ralf Baechle
 * Copyright (C) 2000, 2002  Maciej W. Rozycki
 * Copyright (C) 1990, 1999 by Silicon Graphics, Inc.
 */
#ifndef _ASM_MACH_SPACES_H
#define _ASM_MACH_SPACES_H

/*
 * IP27 uses the R10000's uncached attribute feature.  Attribute 3 selects
 * uncached memory addressing.
 */
#define CAC_BASE		0xa800000000000000

#define HSPEC_BASE		0x9000000000000000
#define IO_BASE			0x9200000000000000
#define MSPEC_BASE		0x9400000000000000
#define UNCAC_BASE		0x9600000000000000

#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))
#define TO_MSPEC(x)		(MSPEC_BASE | ((x) & TO_PHYS_MASK))
#define TO_HSPEC(x)		(HSPEC_BASE | ((x) & TO_PHYS_MASK))

#define PAGE_OFFSET		CAC_BASE

#define HIGHMEM_START		(~0UL)

#endif /* _ASM_MACH_SPACES_H */