1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1996, 99 Ralf Baechle 7 * Copyright (C) 2000, 2002 Maciej W. Rozycki 8 * Copyright (C) 1990, 1999 by Silicon Graphics, Inc. 9 */ 10#ifndef _ASM_ADDRSPACE_H 11#define _ASM_ADDRSPACE_H 12 13#include <spaces.h> 14 15/* 16 * Configure language 17 */ 18#ifdef __ASSEMBLY__ 19#define _ATYPE_ 20#define _ATYPE32_ 21#define _ATYPE64_ 22#define _CONST64_(x) x 23#else 24#define _ATYPE_ __PTRDIFF_TYPE__ 25#define _ATYPE32_ int 26#define _ATYPE64_ __s64 27#ifdef CONFIG_64BIT 28#define _CONST64_(x) x ## L 29#else 30#define _CONST64_(x) x ## LL 31#endif 32#endif 33 34/* 35 * 32-bit MIPS address spaces 36 */ 37#ifdef __ASSEMBLY__ 38#define _ACAST32_ 39#define _ACAST64_ 40#else 41#define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */ 42#define _ACAST64_ (_ATYPE64_) /* do _not_ narrow */ 43#endif 44 45/* 46 * Returns the kernel segment base of a given address 47 */ 48#define KSEGX(a) ((_ACAST32_ (a)) & 0xe0000000) 49 50/* 51 * Returns the physical address of a CKSEGx / XKPHYS address 52 */ 53#define CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff) 54#define XPHYSADDR(a) ((_ACAST64_(a)) & \ 55 _CONST64_(0x000000ffffffffff)) 56 57#ifdef CONFIG_64BIT 58 59/* 60 * Memory segments (64bit kernel mode addresses) 61 * The compatibility segments use the full 64-bit sign extended value. Note 62 * the R8000 doesn't have them so don't reference these in generic MIPS code. 63 */ 64#define XKUSEG _CONST64_(0x0000000000000000) 65#define XKSSEG _CONST64_(0x4000000000000000) 66#define XKPHYS _CONST64_(0x8000000000000000) 67#define XKSEG _CONST64_(0xc000000000000000) 68#define CKSEG0 _CONST64_(0xffffffff80000000) 69#define CKSEG1 _CONST64_(0xffffffffa0000000) 70#define CKSSEG _CONST64_(0xffffffffc0000000) 71#define CKSEG3 _CONST64_(0xffffffffe0000000) 72 73#define CKSEG0ADDR(a) (CPHYSADDR(a) | CKSEG0) 74#define CKSEG1ADDR(a) (CPHYSADDR(a) | CKSEG1) 75#define CKSEG2ADDR(a) (CPHYSADDR(a) | CKSEG2) 76#define CKSEG3ADDR(a) (CPHYSADDR(a) | CKSEG3) 77 78#else 79 80#define CKSEG0ADDR(a) (CPHYSADDR(a) | KSEG0) 81#define CKSEG1ADDR(a) (CPHYSADDR(a) | KSEG1) 82#define CKSEG2ADDR(a) (CPHYSADDR(a) | KSEG2) 83#define CKSEG3ADDR(a) (CPHYSADDR(a) | KSEG3) 84 85/* 86 * Map an address to a certain kernel segment 87 */ 88#define KSEG0ADDR(a) (CPHYSADDR(a) | KSEG0) 89#define KSEG1ADDR(a) (CPHYSADDR(a) | KSEG1) 90#define KSEG2ADDR(a) (CPHYSADDR(a) | KSEG2) 91#define KSEG3ADDR(a) (CPHYSADDR(a) | KSEG3) 92 93/* 94 * Memory segments (32bit kernel mode addresses) 95 * These are the traditional names used in the 32-bit universe. 96 */ 97#define KUSEG 0x00000000 98#define KSEG0 0x80000000 99#define KSEG1 0xa0000000 100#define KSEG2 0xc0000000 101#define KSEG3 0xe0000000 102 103#define CKUSEG 0x00000000 104#define CKSEG0 0x80000000 105#define CKSEG1 0xa0000000 106#define CKSEG2 0xc0000000 107#define CKSEG3 0xe0000000 108 109#endif 110 111/* 112 * Cache modes for XKPHYS address conversion macros 113 */ 114#define K_CALG_COH_EXCL1_NOL2 0 115#define K_CALG_COH_SHRL1_NOL2 1 116#define K_CALG_UNCACHED 2 117#define K_CALG_NONCOHERENT 3 118#define K_CALG_COH_EXCL 4 119#define K_CALG_COH_SHAREABLE 5 120#define K_CALG_NOTUSED 6 121#define K_CALG_UNCACHED_ACCEL 7 122 123/* 124 * 64-bit address conversions 125 */ 126#define PHYS_TO_XKSEG_UNCACHED(p) PHYS_TO_XKPHYS(K_CALG_UNCACHED,(p)) 127#define PHYS_TO_XKSEG_CACHED(p) PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE,(p)) 128#define XKPHYS_TO_PHYS(p) ((p) & TO_PHYS_MASK) 129#define PHYS_TO_XKPHYS(cm,a) (_CONST64_(0x8000000000000000) | \ 130 ((cm)<<59) | (a)) 131 132#if defined(CONFIG_CPU_R4300) || defined(CONFIG_CPU_R4X00) || defined(CONFIG_CPU_R5000) \ 133 || defined(CONFIG_CPU_RM7000) || defined(CONFIG_CPU_RM9000) || \ 134 defined(CONFIG_CPU_NEVADA) || defined(CONFIG_CPU_TX49XX) || defined(CONFIG_CPU_MIPS64) 135#define TO_PHYS_MASK _CONST64_(0x0000000fffffffff) /* 2^^36 - 1 */ 136#endif 137 138#if defined(CONFIG_CPU_R8000) 139/* We keep KUSIZE consistent with R4000 for now (2^^40) instead of (2^^48) */ 140#define TO_PHYS_MASK _CONST64_(0x000000ffffffffff) /* 2^^40 - 1 */ 141#endif 142 143#if defined(CONFIG_CPU_R10000) 144#define TO_PHYS_MASK _CONST64_(0x000000ffffffffff) /* 2^^40 - 1 */ 145#endif 146 147#if defined(CONFIG_CPU_SB1) || defined(CONFIG_CPU_SB1A) 148#define TO_PHYS_MASK _CONST64_(0x00000fffffffffff) /* 2^^44 - 1 */ 149#endif 150 151#ifndef CONFIG_CPU_R8000 152 153/* 154 * The R8000 doesn't have the 32-bit compat spaces so we don't define them 155 * in order to catch bugs in the source code. 156 */ 157 158#define COMPAT_K1BASE32 _CONST64_(0xffffffffa0000000) 159#define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */ 160 161#endif 162 163#define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK) 164#define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE) 165 166#endif /* _ASM_ADDRSPACE_H */ 167