]>
Commit | Line | Data |
---|---|---|
83d290c5 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
6069ff26 | 2 | /* |
7daf2ebe SK |
3 | * Copyright (C) 1996, 99 Ralf Baechle |
4 | * Copyright (C) 2000, 2002 Maciej W. Rozycki | |
5 | * Copyright (C) 1990, 1999 by Silicon Graphics, Inc. | |
6 | */ | |
7 | #ifndef _ASM_ADDRSPACE_H | |
8 | #define _ASM_ADDRSPACE_H | |
9 | ||
23ff8633 DS |
10 | #include <spaces.h> |
11 | ||
7daf2ebe SK |
12 | /* |
13 | * Configure language | |
14 | */ | |
15 | #ifdef __ASSEMBLY__ | |
16 | #define _ATYPE_ | |
17 | #define _ATYPE32_ | |
18 | #define _ATYPE64_ | |
19 | #define _CONST64_(x) x | |
20 | #else | |
21 | #define _ATYPE_ __PTRDIFF_TYPE__ | |
22 | #define _ATYPE32_ int | |
23 | #define _ATYPE64_ __s64 | |
24 | #ifdef CONFIG_64BIT | |
25 | #define _CONST64_(x) x ## L | |
26 | #else | |
27 | #define _CONST64_(x) x ## LL | |
28 | #endif | |
29 | #endif | |
30 | ||
31 | /* | |
32 | * 32-bit MIPS address spaces | |
33 | */ | |
34 | #ifdef __ASSEMBLY__ | |
35 | #define _ACAST32_ | |
36 | #define _ACAST64_ | |
37 | #else | |
38 | #define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */ | |
39 | #define _ACAST64_ (_ATYPE64_) /* do _not_ narrow */ | |
40 | #endif | |
41 | ||
42 | /* | |
43 | * Returns the kernel segment base of a given address | |
44 | */ | |
45 | #define KSEGX(a) ((_ACAST32_ (a)) & 0xe0000000) | |
46 | ||
47 | /* | |
48 | * Returns the physical address of a CKSEGx / XKPHYS address | |
49 | */ | |
50 | #define CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff) | |
51 | #define XPHYSADDR(a) ((_ACAST64_(a)) & \ | |
23ff8633 | 52 | _CONST64_(0x0000ffffffffffff)) |
7daf2ebe SK |
53 | |
54 | #ifdef CONFIG_64BIT | |
55 | ||
56 | /* | |
57 | * Memory segments (64bit kernel mode addresses) | |
58 | * The compatibility segments use the full 64-bit sign extended value. Note | |
59 | * the R8000 doesn't have them so don't reference these in generic MIPS code. | |
60 | */ | |
61 | #define XKUSEG _CONST64_(0x0000000000000000) | |
62 | #define XKSSEG _CONST64_(0x4000000000000000) | |
63 | #define XKPHYS _CONST64_(0x8000000000000000) | |
64 | #define XKSEG _CONST64_(0xc000000000000000) | |
65 | #define CKSEG0 _CONST64_(0xffffffff80000000) | |
66 | #define CKSEG1 _CONST64_(0xffffffffa0000000) | |
67 | #define CKSSEG _CONST64_(0xffffffffc0000000) | |
68 | #define CKSEG3 _CONST64_(0xffffffffe0000000) | |
69 | ||
70 | #define CKSEG0ADDR(a) (CPHYSADDR(a) | CKSEG0) | |
71 | #define CKSEG1ADDR(a) (CPHYSADDR(a) | CKSEG1) | |
72 | #define CKSEG2ADDR(a) (CPHYSADDR(a) | CKSEG2) | |
73 | #define CKSEG3ADDR(a) (CPHYSADDR(a) | CKSEG3) | |
74 | ||
75 | #else | |
76 | ||
77 | #define CKSEG0ADDR(a) (CPHYSADDR(a) | KSEG0) | |
78 | #define CKSEG1ADDR(a) (CPHYSADDR(a) | KSEG1) | |
79 | #define CKSEG2ADDR(a) (CPHYSADDR(a) | KSEG2) | |
80 | #define CKSEG3ADDR(a) (CPHYSADDR(a) | KSEG3) | |
81 | ||
82 | /* | |
83 | * Map an address to a certain kernel segment | |
6069ff26 | 84 | */ |
7daf2ebe SK |
85 | #define KSEG0ADDR(a) (CPHYSADDR(a) | KSEG0) |
86 | #define KSEG1ADDR(a) (CPHYSADDR(a) | KSEG1) | |
87 | #define KSEG2ADDR(a) (CPHYSADDR(a) | KSEG2) | |
88 | #define KSEG3ADDR(a) (CPHYSADDR(a) | KSEG3) | |
6069ff26 WD |
89 | |
90 | /* | |
91 | * Memory segments (32bit kernel mode addresses) | |
7daf2ebe | 92 | * These are the traditional names used in the 32-bit universe. |
6069ff26 | 93 | */ |
d4ca31c4 WD |
94 | #define KUSEG 0x00000000 |
95 | #define KSEG0 0x80000000 | |
96 | #define KSEG1 0xa0000000 | |
97 | #define KSEG2 0xc0000000 | |
98 | #define KSEG3 0xe0000000 | |
6069ff26 | 99 | |
7daf2ebe SK |
100 | #define CKUSEG 0x00000000 |
101 | #define CKSEG0 0x80000000 | |
102 | #define CKSEG1 0xa0000000 | |
103 | #define CKSEG2 0xc0000000 | |
104 | #define CKSEG3 0xe0000000 | |
105 | ||
106 | #endif | |
6069ff26 WD |
107 | |
108 | /* | |
7daf2ebe | 109 | * Cache modes for XKPHYS address conversion macros |
6069ff26 | 110 | */ |
7daf2ebe SK |
111 | #define K_CALG_COH_EXCL1_NOL2 0 |
112 | #define K_CALG_COH_SHRL1_NOL2 1 | |
113 | #define K_CALG_UNCACHED 2 | |
114 | #define K_CALG_NONCOHERENT 3 | |
115 | #define K_CALG_COH_EXCL 4 | |
116 | #define K_CALG_COH_SHAREABLE 5 | |
117 | #define K_CALG_NOTUSED 6 | |
118 | #define K_CALG_UNCACHED_ACCEL 7 | |
6069ff26 WD |
119 | |
120 | /* | |
7daf2ebe | 121 | * 64-bit address conversions |
6069ff26 | 122 | */ |
7daf2ebe SK |
123 | #define PHYS_TO_XKSEG_UNCACHED(p) PHYS_TO_XKPHYS(K_CALG_UNCACHED, (p)) |
124 | #define PHYS_TO_XKSEG_CACHED(p) PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE, (p)) | |
125 | #define XKPHYS_TO_PHYS(p) ((p) & TO_PHYS_MASK) | |
126 | #define PHYS_TO_XKPHYS(cm, a) (_CONST64_(0x8000000000000000) | \ | |
127 | (_CONST64_(cm) << 59) | (a)) | |
6069ff26 | 128 | |
d4ca31c4 WD |
129 | /* |
130 | * Returns the uncached address of a sdram address | |
a2663ea4 WD |
131 | */ |
132 | #ifndef __ASSEMBLY__ | |
481ea2e3 | 133 | #if defined(CONFIG_TB0229) |
a2663ea4 WD |
134 | /* We use a 36 bit physical address map here and |
135 | cannot access physical memory directly from core */ | |
136 | #define UNCACHED_SDRAM(a) (((unsigned long)(a)) | 0x20000000) | |
481ea2e3 | 137 | #else /* !CONFIG_TB0229 */ |
090854c8 | 138 | #define UNCACHED_SDRAM(a) CKSEG1ADDR(a) |
481ea2e3 | 139 | #endif /* CONFIG_TB0229 */ |
a2663ea4 | 140 | #endif /* __ASSEMBLY__ */ |
7daf2ebe | 141 | |
6069ff26 | 142 | /* |
7daf2ebe SK |
143 | * The ultimate limited of the 64-bit MIPS architecture: 2 bits for selecting |
144 | * the region, 3 bits for the CCA mode. This leaves 59 bits of which the | |
145 | * R8000 implements most with its 48-bit physical address space. | |
6069ff26 | 146 | */ |
7daf2ebe SK |
147 | #define TO_PHYS_MASK _CONST64_(0x07ffffffffffffff) /* 2^^59 - 1 */ |
148 | ||
149 | #ifndef CONFIG_CPU_R8000 | |
6069ff26 WD |
150 | |
151 | /* | |
7daf2ebe SK |
152 | * The R8000 doesn't have the 32-bit compat spaces so we don't define them |
153 | * in order to catch bugs in the source code. | |
6069ff26 | 154 | */ |
7daf2ebe SK |
155 | |
156 | #define COMPAT_K1BASE32 _CONST64_(0xffffffffa0000000) | |
157 | #define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */ | |
158 | ||
159 | #endif | |
160 | ||
161 | #define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK) | |
162 | #define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE) | |
163 | ||
164 | #endif /* _ASM_ADDRSPACE_H */ |