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14cf11af PM |
1 | /* |
2 | * Declarations of procedures and variables shared between files | |
3 | * in arch/ppc/mm/. | |
4 | * | |
5 | * Derived from arch/ppc/mm/init.c: | |
6 | * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) | |
7 | * | |
8 | * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au) | |
9 | * and Cort Dougan (PReP) (cort@cs.nmt.edu) | |
10 | * Copyright (C) 1996 Paul Mackerras | |
14cf11af PM |
11 | * |
12 | * Derived from "arch/i386/mm/init.c" | |
13 | * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License | |
17 | * as published by the Free Software Foundation; either version | |
18 | * 2 of the License, or (at your option) any later version. | |
19 | * | |
20 | */ | |
62102307 | 21 | #include <linux/mm.h> |
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22 | #include <asm/tlbflush.h> |
23 | #include <asm/mmu.h> | |
24 | ||
2a4aca11 BH |
25 | #ifdef CONFIG_PPC_MMU_NOHASH |
26 | ||
27 | /* | |
28 | * On 40x and 8xx, we directly inline tlbia and tlbivax | |
29 | */ | |
30 | #if defined(CONFIG_40x) || defined(CONFIG_8xx) | |
31 | static inline void _tlbil_all(void) | |
32 | { | |
4a082682 | 33 | asm volatile ("sync; tlbia; isync" : : : "memory"); |
2a4aca11 BH |
34 | } |
35 | static inline void _tlbil_pid(unsigned int pid) | |
36 | { | |
4a082682 | 37 | asm volatile ("sync; tlbia; isync" : : : "memory"); |
2a4aca11 | 38 | } |
d4e167da BH |
39 | #define _tlbil_pid_noind(pid) _tlbil_pid(pid) |
40 | ||
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41 | #else /* CONFIG_40x || CONFIG_8xx */ |
42 | extern void _tlbil_all(void); | |
43 | extern void _tlbil_pid(unsigned int pid); | |
25d21ad6 BH |
44 | #ifdef CONFIG_PPC_BOOK3E |
45 | extern void _tlbil_pid_noind(unsigned int pid); | |
46 | #else | |
d4e167da | 47 | #define _tlbil_pid_noind(pid) _tlbil_pid(pid) |
25d21ad6 | 48 | #endif |
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49 | #endif /* !(CONFIG_40x || CONFIG_8xx) */ |
50 | ||
51 | /* | |
52 | * On 8xx, we directly inline tlbie, on others, it's extern | |
53 | */ | |
54 | #ifdef CONFIG_8xx | |
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55 | static inline void _tlbil_va(unsigned long address, unsigned int pid, |
56 | unsigned int tsize, unsigned int ind) | |
2a4aca11 | 57 | { |
4a082682 | 58 | asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); |
2a4aca11 | 59 | } |
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60 | #elif defined(CONFIG_PPC_BOOK3E) |
61 | extern void _tlbil_va(unsigned long address, unsigned int pid, | |
62 | unsigned int tsize, unsigned int ind); | |
63 | #else | |
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64 | extern void __tlbil_va(unsigned long address, unsigned int pid); |
65 | static inline void _tlbil_va(unsigned long address, unsigned int pid, | |
66 | unsigned int tsize, unsigned int ind) | |
67 | { | |
68 | __tlbil_va(address, pid); | |
69 | } | |
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70 | #endif /* CONIFG_8xx */ |
71 | ||
72 | /* | |
73 | * As of today, we don't support tlbivax broadcast on any | |
74 | * implementation. When that becomes the case, this will be | |
75 | * an extern. | |
76 | */ | |
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77 | #ifdef CONFIG_PPC_BOOK3E |
78 | extern void _tlbivax_bcast(unsigned long address, unsigned int pid, | |
79 | unsigned int tsize, unsigned int ind); | |
80 | #else | |
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81 | static inline void _tlbivax_bcast(unsigned long address, unsigned int pid, |
82 | unsigned int tsize, unsigned int ind) | |
2a4aca11 BH |
83 | { |
84 | BUG(); | |
85 | } | |
25d21ad6 | 86 | #endif |
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87 | |
88 | #else /* CONFIG_PPC_MMU_NOHASH */ | |
89 | ||
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90 | extern void hash_preload(struct mm_struct *mm, unsigned long ea, |
91 | unsigned long access, unsigned long trap); | |
92 | ||
93 | ||
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94 | extern void _tlbie(unsigned long address); |
95 | extern void _tlbia(void); | |
96 | ||
97 | #endif /* CONFIG_PPC_MMU_NOHASH */ | |
98 | ||
ab1f9dac | 99 | #ifdef CONFIG_PPC32 |
19f5465e | 100 | |
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101 | extern void mapin_ram(void); |
102 | extern int map_page(unsigned long va, phys_addr_t pa, int flags); | |
7c5c4325 | 103 | extern void setbat(int index, unsigned long virt, phys_addr_t phys, |
14cf11af | 104 | unsigned int size, int flags); |
14cf11af PM |
105 | |
106 | extern int __map_without_bats; | |
c5df7f77 | 107 | extern int __allow_ioremap_reserved; |
14cf11af | 108 | extern unsigned long ioremap_base; |
14cf11af PM |
109 | extern unsigned int rtas_data, rtas_size; |
110 | ||
8e561e7e DG |
111 | struct hash_pte; |
112 | extern struct hash_pte *Hash, *Hash_end; | |
14cf11af | 113 | extern unsigned long Hash_size, Hash_mask; |
32a74949 BH |
114 | |
115 | #endif /* CONFIG_PPC32 */ | |
116 | ||
117 | #ifdef CONFIG_PPC64 | |
118 | extern int map_kernel_page(unsigned long ea, unsigned long pa, int flags); | |
119 | #endif /* CONFIG_PPC64 */ | |
ab1f9dac | 120 | |
800fc3ee | 121 | extern unsigned long ioremap_bot; |
ab1f9dac | 122 | extern unsigned long __max_low_memory; |
09b5e63f | 123 | extern phys_addr_t __initial_memory_limit_addr; |
2bf3016f SR |
124 | extern phys_addr_t total_memory; |
125 | extern phys_addr_t total_lowmem; | |
99c62dd7 | 126 | extern phys_addr_t memstart_addr; |
d7917ba7 | 127 | extern phys_addr_t lowmem_end_addr; |
14cf11af | 128 | |
de32400d AH |
129 | #ifdef CONFIG_WII |
130 | extern unsigned long wii_hole_start; | |
131 | extern unsigned long wii_hole_size; | |
132 | ||
133 | extern unsigned long wii_mmu_mapin_mem2(unsigned long top); | |
134 | extern void wii_memory_fixups(void); | |
135 | #endif | |
136 | ||
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137 | /* ...and now those things that may be slightly different between processor |
138 | * architectures. -- Dan | |
139 | */ | |
140 | #if defined(CONFIG_8xx) | |
14cf11af | 141 | #define MMU_init_hw() do { } while(0) |
ae4cec47 | 142 | #define mmu_mapin_ram(top) (0UL) |
14cf11af PM |
143 | |
144 | #elif defined(CONFIG_4xx) | |
14cf11af | 145 | extern void MMU_init_hw(void); |
ae4cec47 | 146 | extern unsigned long mmu_mapin_ram(unsigned long top); |
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147 | |
148 | #elif defined(CONFIG_FSL_BOOKE) | |
14cf11af | 149 | extern void MMU_init_hw(void); |
ae4cec47 | 150 | extern unsigned long mmu_mapin_ram(unsigned long top); |
14cf11af PM |
151 | extern void adjust_total_lowmem(void); |
152 | ||
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153 | #elif defined(CONFIG_PPC32) |
154 | /* anything 32-bit except 4xx or 8xx */ | |
14cf11af | 155 | extern void MMU_init_hw(void); |
de32400d | 156 | extern unsigned long mmu_mapin_ram(unsigned long top); |
14cf11af | 157 | #endif |