1384740dcSRalf Baechle /* 2384740dcSRalf Baechle * This file is subject to the terms and conditions of the GNU General Public 3384740dcSRalf Baechle * License. See the file "COPYING" in the main directory of this archive 4384740dcSRalf Baechle * for more details. 5384740dcSRalf Baechle * 6384740dcSRalf Baechle * Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle 7384740dcSRalf Baechle * Copyright (C) 2000, 2002 Maciej W. Rozycki 8384740dcSRalf Baechle * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc. 9384740dcSRalf Baechle */ 10384740dcSRalf Baechle #ifndef _ASM_MACH_GENERIC_SPACES_H 11384740dcSRalf Baechle #define _ASM_MACH_GENERIC_SPACES_H 12384740dcSRalf Baechle 13384740dcSRalf Baechle #include <linux/const.h> 14384740dcSRalf Baechle 15384740dcSRalf Baechle /* 16384740dcSRalf Baechle * This gives the physical RAM offset. 17384740dcSRalf Baechle */ 18384740dcSRalf Baechle #ifndef PHYS_OFFSET 19384740dcSRalf Baechle #define PHYS_OFFSET _AC(0, UL) 20384740dcSRalf Baechle #endif 21384740dcSRalf Baechle 22384740dcSRalf Baechle #ifdef CONFIG_32BIT 239843b030SSanjay Lal #ifdef CONFIG_KVM_GUEST 249843b030SSanjay Lal #define CAC_BASE _AC(0x40000000, UL) 259843b030SSanjay Lal #else 26384740dcSRalf Baechle #define CAC_BASE _AC(0x80000000, UL) 279843b030SSanjay Lal #endif 287ad18dd0SSteven J. Hill #ifndef IO_BASE 29384740dcSRalf Baechle #define IO_BASE _AC(0xa0000000, UL) 307ad18dd0SSteven J. Hill #endif 317ad18dd0SSteven J. Hill #ifndef UNCAC_BASE 32384740dcSRalf Baechle #define UNCAC_BASE _AC(0xa0000000, UL) 337ad18dd0SSteven J. Hill #endif 34384740dcSRalf Baechle 35384740dcSRalf Baechle #ifndef MAP_BASE 369843b030SSanjay Lal #ifdef CONFIG_KVM_GUEST 379843b030SSanjay Lal #define MAP_BASE _AC(0x60000000, UL) 389843b030SSanjay Lal #else 39384740dcSRalf Baechle #define MAP_BASE _AC(0xc0000000, UL) 40384740dcSRalf Baechle #endif 419843b030SSanjay Lal #endif 42384740dcSRalf Baechle 43384740dcSRalf Baechle /* 44384740dcSRalf Baechle * Memory above this physical address will be considered highmem. 45384740dcSRalf Baechle */ 46384740dcSRalf Baechle #ifndef HIGHMEM_START 47384740dcSRalf Baechle #define HIGHMEM_START _AC(0x20000000, UL) 48384740dcSRalf Baechle #endif 49384740dcSRalf Baechle 50384740dcSRalf Baechle #endif /* CONFIG_32BIT */ 51384740dcSRalf Baechle 52384740dcSRalf Baechle #ifdef CONFIG_64BIT 53384740dcSRalf Baechle 54384740dcSRalf Baechle #ifndef CAC_BASE 55384740dcSRalf Baechle #ifdef CONFIG_DMA_NONCOHERENT 56384740dcSRalf Baechle #define CAC_BASE _AC(0x9800000000000000, UL) 57384740dcSRalf Baechle #else 58384740dcSRalf Baechle #define CAC_BASE _AC(0xa800000000000000, UL) 59384740dcSRalf Baechle #endif 60384740dcSRalf Baechle #endif 61384740dcSRalf Baechle 62384740dcSRalf Baechle #ifndef IO_BASE 63384740dcSRalf Baechle #define IO_BASE _AC(0x9000000000000000, UL) 64384740dcSRalf Baechle #endif 65384740dcSRalf Baechle 66384740dcSRalf Baechle #ifndef UNCAC_BASE 67384740dcSRalf Baechle #define UNCAC_BASE _AC(0x9000000000000000, UL) 68384740dcSRalf Baechle #endif 69384740dcSRalf Baechle 70384740dcSRalf Baechle #ifndef MAP_BASE 71384740dcSRalf Baechle #define MAP_BASE _AC(0xc000000000000000, UL) 72384740dcSRalf Baechle #endif 73384740dcSRalf Baechle 74384740dcSRalf Baechle /* 75384740dcSRalf Baechle * Memory above this physical address will be considered highmem. 76384740dcSRalf Baechle * Fixme: 59 bits is a fictive number and makes assumptions about processors 77384740dcSRalf Baechle * in the distant future. Nobody will care for a few years :-) 78384740dcSRalf Baechle */ 79384740dcSRalf Baechle #ifndef HIGHMEM_START 80384740dcSRalf Baechle #define HIGHMEM_START (_AC(1, UL) << _AC(59, UL)) 81384740dcSRalf Baechle #endif 82384740dcSRalf Baechle 83384740dcSRalf Baechle #define TO_PHYS(x) ( ((x) & TO_PHYS_MASK)) 84384740dcSRalf Baechle #define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK)) 85384740dcSRalf Baechle #define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK)) 86384740dcSRalf Baechle 87384740dcSRalf Baechle #endif /* CONFIG_64BIT */ 88384740dcSRalf Baechle 89384740dcSRalf Baechle /* 90384740dcSRalf Baechle * This handles the memory map. 91384740dcSRalf Baechle */ 92384740dcSRalf Baechle #ifndef PAGE_OFFSET 93384740dcSRalf Baechle #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) 94384740dcSRalf Baechle #endif 95384740dcSRalf Baechle 96565b60deSKevin Cernekee #ifndef FIXADDR_TOP 97565b60deSKevin Cernekee #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) 98565b60deSKevin Cernekee #endif 99565b60deSKevin Cernekee 100384740dcSRalf Baechle #endif /* __ASM_MACH_GENERIC_SPACES_H */ 101