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110 lines
2.5 KiB
110 lines
2.5 KiB
/* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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* |
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* Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle |
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* Copyright (C) 2000, 2002 Maciej W. Rozycki |
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* Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc. |
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*/ |
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#ifndef _ASM_MACH_GENERIC_SPACES_H |
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#define _ASM_MACH_GENERIC_SPACES_H |
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#include <linux/const.h> |
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#include <asm/mipsregs.h> |
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#ifndef IO_SPACE_LIMIT |
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#define IO_SPACE_LIMIT 0xffff |
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#endif |
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/* |
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* This gives the physical RAM offset. |
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*/ |
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#ifndef __ASSEMBLY__ |
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# if defined(CONFIG_MIPS_AUTO_PFN_OFFSET) |
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# define PHYS_OFFSET ((unsigned long)PFN_PHYS(ARCH_PFN_OFFSET)) |
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# elif !defined(PHYS_OFFSET) |
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# define PHYS_OFFSET _AC(0, UL) |
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# endif |
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#endif /* __ASSEMBLY__ */ |
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#ifdef CONFIG_32BIT |
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#ifdef CONFIG_KVM_GUEST |
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#define CAC_BASE _AC(0x40000000, UL) |
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#else |
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#define CAC_BASE _AC(0x80000000, UL) |
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#endif |
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#ifndef IO_BASE |
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#define IO_BASE _AC(0xa0000000, UL) |
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#endif |
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#ifndef UNCAC_BASE |
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#define UNCAC_BASE _AC(0xa0000000, UL) |
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#endif |
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#ifndef MAP_BASE |
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#ifdef CONFIG_KVM_GUEST |
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#define MAP_BASE _AC(0x60000000, UL) |
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#else |
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#define MAP_BASE _AC(0xc0000000, UL) |
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#endif |
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#endif |
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/* |
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* Memory above this physical address will be considered highmem. |
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*/ |
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#ifndef HIGHMEM_START |
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#define HIGHMEM_START _AC(0x20000000, UL) |
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#endif |
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#endif /* CONFIG_32BIT */ |
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#ifdef CONFIG_64BIT |
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#ifndef CAC_BASE |
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#define CAC_BASE PHYS_TO_XKPHYS(read_c0_config() & CONF_CM_CMASK, 0) |
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#endif |
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#ifndef IO_BASE |
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#define IO_BASE _AC(0x9000000000000000, UL) |
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#endif |
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#ifndef UNCAC_BASE |
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#define UNCAC_BASE _AC(0x9000000000000000, UL) |
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#endif |
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#ifndef MAP_BASE |
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#define MAP_BASE _AC(0xc000000000000000, UL) |
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#endif |
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/* |
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* Memory above this physical address will be considered highmem. |
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* Fixme: 59 bits is a fictive number and makes assumptions about processors |
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* in the distant future. Nobody will care for a few years :-) |
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*/ |
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#ifndef HIGHMEM_START |
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#define HIGHMEM_START (_AC(1, UL) << _AC(59, UL)) |
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#endif |
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#define TO_PHYS(x) ( ((x) & TO_PHYS_MASK)) |
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#define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK)) |
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#define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK)) |
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#endif /* CONFIG_64BIT */ |
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/* |
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* This handles the memory map. |
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*/ |
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#ifndef PAGE_OFFSET |
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#define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) |
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#endif |
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#ifndef FIXADDR_TOP |
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#ifdef CONFIG_KVM_GUEST |
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#define FIXADDR_TOP ((unsigned long)(long)(int)0x7ffe0000) |
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#else |
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#define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) |
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#endif |
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#endif |
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#endif /* __ASM_MACH_GENERIC_SPACES_H */
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