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, 1999 by Ralf Baechle 7 * Copyright (C) 1990, 1999 by Silicon Graphics, Inc. 8 * Copyright (C) 2002 Maciej W. Rozycki 9 */ 10 #ifndef __ASM_MIPS64_ADDRSPACE_H 11 #define __ASM_MIPS64_ADDRSPACE_H 12 13 #include <linux/config.h> 14 15 /* 16 * Configure language 17 */ 18 #ifdef __ASSEMBLY__ 19 #define _ATYPE_ 20 #define _ATYPE32_ 21 #define _ATYPE64_ 22 #else 23 #define _ATYPE_ __PTRDIFF_TYPE__ 24 #define _ATYPE32_ int 25 #define _ATYPE64_ long long 26 #endif 27 28 /* 29 * 32-bit MIPS address spaces 30 */ 31 #ifdef __ASSEMBLY__ 32 #define _ACAST32_ 33 #define _ACAST64_ 34 #else 35 #define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */ 36 #define _ACAST64_ (_ATYPE64_) /* do _not_ narrow */ 37 #endif 38 39 /* 40 * Memory segments (32bit kernel mode addresses) 41 */ 42 #define KUSEG 0x0000000000000000 43 #define KSEG0 0xffffffff80000000 44 #define KSEG1 0xffffffffa0000000 45 #define KSEG2 0xffffffffc0000000 46 #define KSEG3 0xffffffffe0000000 47 48 /* 49 * Returns the kernel segment base of a given address 50 */ 51 #define KSEGX(a) ((_ACAST64_ (a)) & 0xffffffffe0000000) 52 53 /* 54 * Returns the physical address of a KSEG0/KSEG1 address 55 */ 56 #define XPHYSADDR(a) ((_ACAST64_ (a)) & 0x000000ffffffffff) 57 #define CPHYSADDR(a) ((_ACAST64_ (a)) & 0x000000001fffffff) 58 59 #ifndef __ASSEMBLY__ 60 #define PHYSADDR(a) ({ \ 61 const _ATYPE64_ _a = _ACAST64_ (a); \ 62 _a == _ACAST32_ _a ? CPHYSADDR(_a) : XPHYSADDR(_a); }) 63 #endif 64 65 /* 66 * Map an address to a certain kernel segment 67 */ 68 #define KSEG0ADDR(a) (CPHYSADDR(a) | KSEG0) 69 #define KSEG1ADDR(a) (CPHYSADDR(a) | KSEG1) 70 #define KSEG2ADDR(a) (CPHYSADDR(a) | KSEG2) 71 #define KSEG3ADDR(a) (CPHYSADDR(a) | KSEG3) 72 73 /* 74 * Memory segments (64bit kernel mode addresses) 75 */ 76 #define XKUSEG 0x0000000000000000 77 #define XKSSEG 0x4000000000000000 78 #define XKPHYS 0x8000000000000000 79 #define XKSEG 0xc000000000000000 80 #define CKSEG0 0xffffffff80000000 81 #define CKSEG1 0xffffffffa0000000 82 #define CKSSEG 0xffffffffc0000000 83 #define CKSEG3 0xffffffffe0000000 84 85 #if defined (CONFIG_CPU_R4300) \ 86 || defined (CONFIG_CPU_R4X00) \ 87 || defined (CONFIG_CPU_RM7000) \ 88 || defined (CONFIG_CPU_RM9000) \ 89 || defined (CONFIG_CPU_R5000) \ 90 || defined (CONFIG_CPU_NEVADA) \ 91 || defined (CONFIG_CPU_MIPS64) 92 #define KUSIZE 0x0000010000000000 /* 2^^40 */ 93 #define KUSIZE_64 0x0000010000000000 /* 2^^40 */ 94 #define K0SIZE 0x0000001000000000 /* 2^^36 */ 95 #define K1SIZE 0x0000001000000000 /* 2^^36 */ 96 #define K2SIZE 0x000000ff80000000 97 #define KSEGSIZE 0x000000ff80000000 /* max syssegsz */ 98 #define TO_PHYS_MASK 0x0000000fffffffff /* 2^^36 - 1 */ 99 #endif 100 101 #if defined (CONFIG_CPU_R8000) 102 /* We keep KUSIZE consistent with R4000 for now (2^^40) instead of (2^^48) */ 103 #define KUSIZE 0x0000010000000000 /* 2^^40 */ 104 #define KUSIZE_64 0x0000010000000000 /* 2^^40 */ 105 #define K0SIZE 0x0000010000000000 /* 2^^40 */ 106 #define K1SIZE 0x0000010000000000 /* 2^^40 */ 107 #define K2SIZE 0x0001000000000000 108 #define KSEGSIZE 0x0000010000000000 /* max syssegsz */ 109 #define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */ 110 #endif 111 112 #if defined (CONFIG_CPU_R10000) 113 #define KUSIZE 0x0000010000000000 /* 2^^40 */ 114 #define KUSIZE_64 0x0000010000000000 /* 2^^40 */ 115 #define K0SIZE 0x0000010000000000 /* 2^^40 */ 116 #define K1SIZE 0x0000010000000000 /* 2^^40 */ 117 #define K2SIZE 0x00000fff80000000 118 #define KSEGSIZE 0x00000fff80000000 /* max syssegsz */ 119 #define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */ 120 #endif 121 122 /* 123 * Further names for SGI source compatibility. These are stolen from 124 * IRIX's <sys/mips_addrspace.h>. 125 */ 126 #define KUBASE 0 127 #define KUSIZE_32 0x0000000080000000 /* KUSIZE 128 for a 32 bit proc */ 129 #ifdef CONFIG_CPU_RM7000 130 #define K0BASE 0x9800000000000000UL 131 #else 132 #define K0BASE 0xa800000000000000 133 #endif 134 #define K0BASE_EXL_WR K0BASE /* exclusive on write */ 135 #define K0BASE_NONCOH 0x9800000000000000 /* noncoherent */ 136 #define K0BASE_EXL 0xa000000000000000 /* exclusive */ 137 138 #ifdef CONFIG_SGI_IP27 139 #define K1BASE 0x9600000000000000 /* uncached attr 3, 140 uncac */ 141 #else 142 #define K1BASE 0x9000000000000000 143 #endif 144 #define K2BASE 0xc000000000000000 145 146 #if !defined (CONFIG_CPU_R8000) 147 #define COMPAT_K1BASE32 0xffffffffa0000000 148 #define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */ 149 #endif 150 151 #define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK) 152 #define PHYS_TO_K0(x) (_ACAST64_ (x) | K0BASE) 153 154 #endif /* __ASM_MIPS64_ADDRSPACE_H */ 155