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 153ffc17d8SPaul Burton #include <asm/mipsregs.h> 163ffc17d8SPaul Burton 1721a379a8SJiaxun Yang #ifndef IO_SPACE_LIMIT 1821a379a8SJiaxun Yang #define IO_SPACE_LIMIT 0xffff 1921a379a8SJiaxun Yang #endif 2021a379a8SJiaxun Yang 21384740dcSRalf Baechle /* 22384740dcSRalf Baechle * This gives the physical RAM offset. 23384740dcSRalf Baechle */ 246c359eb1SPaul Burton #ifndef __ASSEMBLY__ 256c359eb1SPaul Burton # if defined(CONFIG_MIPS_AUTO_PFN_OFFSET) 266c359eb1SPaul Burton # define PHYS_OFFSET ((unsigned long)PFN_PHYS(ARCH_PFN_OFFSET)) 276c359eb1SPaul Burton # elif !defined(PHYS_OFFSET) 28384740dcSRalf Baechle # define PHYS_OFFSET _AC(0, UL) 29384740dcSRalf Baechle # endif 306c359eb1SPaul Burton #endif /* __ASSEMBLY__ */ 31384740dcSRalf Baechle 32384740dcSRalf Baechle #ifdef CONFIG_32BIT 33384740dcSRalf Baechle #define CAC_BASE _AC(0x80000000, UL) 347ad18dd0SSteven J. Hill #ifndef IO_BASE 35384740dcSRalf Baechle #define IO_BASE _AC(0xa0000000, UL) 367ad18dd0SSteven J. Hill #endif 377ad18dd0SSteven J. Hill #ifndef UNCAC_BASE 38384740dcSRalf Baechle #define UNCAC_BASE _AC(0xa0000000, UL) 397ad18dd0SSteven J. Hill #endif 40384740dcSRalf Baechle 41384740dcSRalf Baechle #ifndef MAP_BASE 42384740dcSRalf Baechle #define MAP_BASE _AC(0xc0000000, UL) 43384740dcSRalf Baechle #endif 44384740dcSRalf Baechle 45384740dcSRalf Baechle /* 46384740dcSRalf Baechle * Memory above this physical address will be considered highmem. 47384740dcSRalf Baechle */ 48384740dcSRalf Baechle #ifndef HIGHMEM_START 49384740dcSRalf Baechle #define HIGHMEM_START _AC(0x20000000, UL) 50384740dcSRalf Baechle #endif 51384740dcSRalf Baechle 52384740dcSRalf Baechle #endif /* CONFIG_32BIT */ 53384740dcSRalf Baechle 54384740dcSRalf Baechle #ifdef CONFIG_64BIT 55384740dcSRalf Baechle 56384740dcSRalf Baechle #ifndef CAC_BASE 573ffc17d8SPaul Burton #define CAC_BASE PHYS_TO_XKPHYS(read_c0_config() & CONF_CM_CMASK, 0) 58384740dcSRalf Baechle #endif 59384740dcSRalf Baechle 60384740dcSRalf Baechle #ifndef IO_BASE 61384740dcSRalf Baechle #define IO_BASE _AC(0x9000000000000000, UL) 62384740dcSRalf Baechle #endif 63384740dcSRalf Baechle 64384740dcSRalf Baechle #ifndef UNCAC_BASE 65384740dcSRalf Baechle #define UNCAC_BASE _AC(0x9000000000000000, UL) 66384740dcSRalf Baechle #endif 67384740dcSRalf Baechle 68384740dcSRalf Baechle #ifndef MAP_BASE 69384740dcSRalf Baechle #define MAP_BASE _AC(0xc000000000000000, UL) 70384740dcSRalf Baechle #endif 71384740dcSRalf Baechle 72384740dcSRalf Baechle /* 73384740dcSRalf Baechle * Memory above this physical address will be considered highmem. 74384740dcSRalf Baechle * Fixme: 59 bits is a fictive number and makes assumptions about processors 75384740dcSRalf Baechle * in the distant future. Nobody will care for a few years :-) 76384740dcSRalf Baechle */ 77384740dcSRalf Baechle #ifndef HIGHMEM_START 78384740dcSRalf Baechle #define HIGHMEM_START (_AC(1, UL) << _AC(59, UL)) 79384740dcSRalf Baechle #endif 80384740dcSRalf Baechle 81384740dcSRalf Baechle #define TO_PHYS(x) ( ((x) & TO_PHYS_MASK)) 82384740dcSRalf Baechle #define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK)) 83384740dcSRalf Baechle #define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK)) 84384740dcSRalf Baechle 85384740dcSRalf Baechle #endif /* CONFIG_64BIT */ 86384740dcSRalf Baechle 87384740dcSRalf Baechle /* 88384740dcSRalf Baechle * This handles the memory map. 89384740dcSRalf Baechle */ 90384740dcSRalf Baechle #ifndef PAGE_OFFSET 91384740dcSRalf Baechle #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) 92384740dcSRalf Baechle #endif 93384740dcSRalf Baechle 94565b60deSKevin Cernekee #ifndef FIXADDR_TOP 95565b60deSKevin Cernekee #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) 96565b60deSKevin Cernekee #endif 97565b60deSKevin Cernekee 98384740dcSRalf Baechle #endif /* __ASM_MACH_GENERIC_SPACES_H */ 99