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 339843b030SSanjay Lal #ifdef CONFIG_KVM_GUEST 349843b030SSanjay Lal #define CAC_BASE _AC(0x40000000, UL) 359843b030SSanjay Lal #else 36384740dcSRalf Baechle #define CAC_BASE _AC(0x80000000, UL) 379843b030SSanjay Lal #endif 387ad18dd0SSteven J. Hill #ifndef IO_BASE 39384740dcSRalf Baechle #define IO_BASE _AC(0xa0000000, UL) 407ad18dd0SSteven J. Hill #endif 417ad18dd0SSteven J. Hill #ifndef UNCAC_BASE 42384740dcSRalf Baechle #define UNCAC_BASE _AC(0xa0000000, UL) 437ad18dd0SSteven J. Hill #endif 44384740dcSRalf Baechle 45384740dcSRalf Baechle #ifndef MAP_BASE 469843b030SSanjay Lal #ifdef CONFIG_KVM_GUEST 479843b030SSanjay Lal #define MAP_BASE _AC(0x60000000, UL) 489843b030SSanjay Lal #else 49384740dcSRalf Baechle #define MAP_BASE _AC(0xc0000000, UL) 50384740dcSRalf Baechle #endif 519843b030SSanjay Lal #endif 52384740dcSRalf Baechle 53384740dcSRalf Baechle /* 54384740dcSRalf Baechle * Memory above this physical address will be considered highmem. 55384740dcSRalf Baechle */ 56384740dcSRalf Baechle #ifndef HIGHMEM_START 57384740dcSRalf Baechle #define HIGHMEM_START _AC(0x20000000, UL) 58384740dcSRalf Baechle #endif 59384740dcSRalf Baechle 60384740dcSRalf Baechle #endif /* CONFIG_32BIT */ 61384740dcSRalf Baechle 62384740dcSRalf Baechle #ifdef CONFIG_64BIT 63384740dcSRalf Baechle 64384740dcSRalf Baechle #ifndef CAC_BASE 653ffc17d8SPaul Burton #define CAC_BASE PHYS_TO_XKPHYS(read_c0_config() & CONF_CM_CMASK, 0) 66384740dcSRalf Baechle #endif 67384740dcSRalf Baechle 68384740dcSRalf Baechle #ifndef IO_BASE 69384740dcSRalf Baechle #define IO_BASE _AC(0x9000000000000000, UL) 70384740dcSRalf Baechle #endif 71384740dcSRalf Baechle 72384740dcSRalf Baechle #ifndef UNCAC_BASE 73384740dcSRalf Baechle #define UNCAC_BASE _AC(0x9000000000000000, UL) 74384740dcSRalf Baechle #endif 75384740dcSRalf Baechle 76384740dcSRalf Baechle #ifndef MAP_BASE 77384740dcSRalf Baechle #define MAP_BASE _AC(0xc000000000000000, UL) 78384740dcSRalf Baechle #endif 79384740dcSRalf Baechle 80384740dcSRalf Baechle /* 81384740dcSRalf Baechle * Memory above this physical address will be considered highmem. 82384740dcSRalf Baechle * Fixme: 59 bits is a fictive number and makes assumptions about processors 83384740dcSRalf Baechle * in the distant future. Nobody will care for a few years :-) 84384740dcSRalf Baechle */ 85384740dcSRalf Baechle #ifndef HIGHMEM_START 86384740dcSRalf Baechle #define HIGHMEM_START (_AC(1, UL) << _AC(59, UL)) 87384740dcSRalf Baechle #endif 88384740dcSRalf Baechle 89384740dcSRalf Baechle #define TO_PHYS(x) ( ((x) & TO_PHYS_MASK)) 90384740dcSRalf Baechle #define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK)) 91384740dcSRalf Baechle #define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK)) 92384740dcSRalf Baechle 93384740dcSRalf Baechle #endif /* CONFIG_64BIT */ 94384740dcSRalf Baechle 95384740dcSRalf Baechle /* 96384740dcSRalf Baechle * This handles the memory map. 97384740dcSRalf Baechle */ 98384740dcSRalf Baechle #ifndef PAGE_OFFSET 99384740dcSRalf Baechle #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) 100384740dcSRalf Baechle #endif 101384740dcSRalf Baechle 102565b60deSKevin Cernekee #ifndef FIXADDR_TOP 1038e748c8dSJames Hogan #ifdef CONFIG_KVM_GUEST 1048e748c8dSJames Hogan #define FIXADDR_TOP ((unsigned long)(long)(int)0x7ffe0000) 1058e748c8dSJames Hogan #else 106565b60deSKevin Cernekee #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) 107565b60deSKevin Cernekee #endif 1088e748c8dSJames Hogan #endif 109565b60deSKevin Cernekee 110384740dcSRalf Baechle #endif /* __ASM_MACH_GENERIC_SPACES_H */ 111