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1da177e4 LT |
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 <linux/config.h> | |
14 | #include <spaces.h> | |
15 | ||
16 | /* | |
17 | * Configure language | |
18 | */ | |
19 | #ifdef __ASSEMBLY__ | |
20 | #define _ATYPE_ | |
21 | #define _ATYPE32_ | |
22 | #define _ATYPE64_ | |
23 | #else | |
24 | #define _ATYPE_ __PTRDIFF_TYPE__ | |
25 | #define _ATYPE32_ int | |
26 | #define _ATYPE64_ long long | |
27 | #endif | |
28 | ||
29 | /* | |
30 | * 32-bit MIPS address spaces | |
31 | */ | |
32 | #ifdef __ASSEMBLY__ | |
33 | #define _ACAST32_ | |
34 | #define _ACAST64_ | |
35 | #else | |
36 | #define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */ | |
37 | #define _ACAST64_ (_ATYPE64_) /* do _not_ narrow */ | |
38 | #endif | |
39 | ||
40 | /* | |
41 | * Returns the kernel segment base of a given address | |
42 | */ | |
43 | #define KSEGX(a) ((_ACAST32_ (a)) & 0xe0000000) | |
44 | ||
45 | /* | |
46 | * Returns the physical address of a CKSEGx / XKPHYS address | |
47 | */ | |
48 | #define CPHYSADDR(a) ((_ACAST32_ (a)) & 0x1fffffff) | |
49 | #define XPHYSADDR(a) ((_ACAST64_ (a)) & 0x000000ffffffffff) | |
50 | ||
875d43e7 | 51 | #ifdef CONFIG_64BIT |
1da177e4 LT |
52 | |
53 | /* | |
54 | * Memory segments (64bit kernel mode addresses) | |
55 | * The compatibility segments use the full 64-bit sign extended value. Note | |
56 | * the R8000 doesn't have them so don't reference these in generic MIPS code. | |
57 | */ | |
58 | #define XKUSEG 0x0000000000000000 | |
59 | #define XKSSEG 0x4000000000000000 | |
60 | #define XKPHYS 0x8000000000000000 | |
61 | #define XKSEG 0xc000000000000000 | |
62 | #define CKSEG0 0xffffffff80000000 | |
63 | #define CKSEG1 0xffffffffa0000000 | |
64 | #define CKSSEG 0xffffffffc0000000 | |
65 | #define CKSEG3 0xffffffffe0000000 | |
66 | ||
67 | #define CKSEG0ADDR(a) (CPHYSADDR(a) | CKSEG0) | |
68 | #define CKSEG1ADDR(a) (CPHYSADDR(a) | CKSEG1) | |
69 | #define CKSEG2ADDR(a) (CPHYSADDR(a) | CKSEG2) | |
70 | #define CKSEG3ADDR(a) (CPHYSADDR(a) | CKSEG3) | |
71 | ||
72 | #else | |
73 | ||
74 | #define CKSEG0ADDR(a) (CPHYSADDR(a) | KSEG0) | |
75 | #define CKSEG1ADDR(a) (CPHYSADDR(a) | KSEG1) | |
76 | #define CKSEG2ADDR(a) (CPHYSADDR(a) | KSEG2) | |
77 | #define CKSEG3ADDR(a) (CPHYSADDR(a) | KSEG3) | |
78 | ||
79 | /* | |
80 | * Map an address to a certain kernel segment | |
81 | */ | |
82 | #define KSEG0ADDR(a) (CPHYSADDR(a) | KSEG0) | |
83 | #define KSEG1ADDR(a) (CPHYSADDR(a) | KSEG1) | |
84 | #define KSEG2ADDR(a) (CPHYSADDR(a) | KSEG2) | |
85 | #define KSEG3ADDR(a) (CPHYSADDR(a) | KSEG3) | |
86 | ||
87 | /* | |
88 | * Memory segments (32bit kernel mode addresses) | |
89 | * These are the traditional names used in the 32-bit universe. | |
90 | */ | |
91 | #define KUSEG 0x00000000 | |
92 | #define KSEG0 0x80000000 | |
93 | #define KSEG1 0xa0000000 | |
94 | #define KSEG2 0xc0000000 | |
95 | #define KSEG3 0xe0000000 | |
96 | ||
97 | #define CKUSEG 0x00000000 | |
98 | #define CKSEG0 0x80000000 | |
99 | #define CKSEG1 0xa0000000 | |
100 | #define CKSEG2 0xc0000000 | |
101 | #define CKSEG3 0xe0000000 | |
102 | ||
103 | #endif | |
104 | ||
105 | /* | |
106 | * Cache modes for XKPHYS address conversion macros | |
107 | */ | |
108 | #define K_CALG_COH_EXCL1_NOL2 0 | |
109 | #define K_CALG_COH_SHRL1_NOL2 1 | |
110 | #define K_CALG_UNCACHED 2 | |
111 | #define K_CALG_NONCOHERENT 3 | |
112 | #define K_CALG_COH_EXCL 4 | |
113 | #define K_CALG_COH_SHAREABLE 5 | |
114 | #define K_CALG_NOTUSED 6 | |
115 | #define K_CALG_UNCACHED_ACCEL 7 | |
116 | ||
117 | /* | |
118 | * 64-bit address conversions | |
119 | */ | |
120 | #define PHYS_TO_XKSEG_UNCACHED(p) PHYS_TO_XKPHYS(K_CALG_UNCACHED,(p)) | |
121 | #define PHYS_TO_XKSEG_CACHED(p) PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE,(p)) | |
122 | #define XKPHYS_TO_PHYS(p) ((p) & TO_PHYS_MASK) | |
123 | #define PHYS_TO_XKPHYS(cm,a) (0x8000000000000000 | ((cm)<<59) | (a)) | |
124 | ||
125 | #if defined (CONFIG_CPU_R4300) \ | |
126 | || defined (CONFIG_CPU_R4X00) \ | |
127 | || defined (CONFIG_CPU_R5000) \ | |
128 | || defined (CONFIG_CPU_NEVADA) \ | |
129 | || defined (CONFIG_CPU_TX49XX) \ | |
130 | || defined (CONFIG_CPU_MIPS64) | |
131 | #define KUSIZE 0x0000010000000000 /* 2^^40 */ | |
132 | #define KUSIZE_64 0x0000010000000000 /* 2^^40 */ | |
133 | #define K0SIZE 0x0000001000000000 /* 2^^36 */ | |
134 | #define K1SIZE 0x0000001000000000 /* 2^^36 */ | |
135 | #define K2SIZE 0x000000ff80000000 | |
136 | #define KSEGSIZE 0x000000ff80000000 /* max syssegsz */ | |
137 | #define TO_PHYS_MASK 0x0000000fffffffff /* 2^^36 - 1 */ | |
138 | #endif | |
139 | ||
140 | #if defined (CONFIG_CPU_R8000) | |
141 | /* We keep KUSIZE consistent with R4000 for now (2^^40) instead of (2^^48) */ | |
142 | #define KUSIZE 0x0000010000000000 /* 2^^40 */ | |
143 | #define KUSIZE_64 0x0000010000000000 /* 2^^40 */ | |
144 | #define K0SIZE 0x0000010000000000 /* 2^^40 */ | |
145 | #define K1SIZE 0x0000010000000000 /* 2^^40 */ | |
146 | #define K2SIZE 0x0001000000000000 | |
147 | #define KSEGSIZE 0x0000010000000000 /* max syssegsz */ | |
148 | #define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */ | |
149 | #endif | |
150 | ||
151 | #if defined (CONFIG_CPU_R10000) | |
152 | #define KUSIZE 0x0000010000000000 /* 2^^40 */ | |
153 | #define KUSIZE_64 0x0000010000000000 /* 2^^40 */ | |
154 | #define K0SIZE 0x0000010000000000 /* 2^^40 */ | |
155 | #define K1SIZE 0x0000010000000000 /* 2^^40 */ | |
156 | #define K2SIZE 0x00000fff80000000 | |
157 | #define KSEGSIZE 0x00000fff80000000 /* max syssegsz */ | |
158 | #define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */ | |
159 | #endif | |
160 | ||
161 | /* | |
162 | * Further names for SGI source compatibility. These are stolen from | |
163 | * IRIX's <sys/mips_addrspace.h>. | |
164 | */ | |
165 | #define KUBASE 0 | |
166 | #define KUSIZE_32 0x0000000080000000 /* KUSIZE | |
167 | for a 32 bit proc */ | |
168 | #define K0BASE_EXL_WR 0xa800000000000000 /* exclusive on write */ | |
169 | #define K0BASE_NONCOH 0x9800000000000000 /* noncoherent */ | |
170 | #define K0BASE_EXL 0xa000000000000000 /* exclusive */ | |
171 | ||
172 | #ifndef CONFIG_CPU_R8000 | |
173 | ||
174 | /* | |
175 | * The R8000 doesn't have the 32-bit compat spaces so we don't define them | |
176 | * in order to catch bugs in the source code. | |
177 | */ | |
178 | ||
179 | #define COMPAT_K1BASE32 0xffffffffa0000000 | |
180 | #define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */ | |
181 | ||
182 | #endif | |
183 | ||
184 | #define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK) | |
185 | #define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE) | |
186 | ||
187 | #endif /* _ASM_ADDRSPACE_H */ |