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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
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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
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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)
31static inline void _tlbil_all(void)
32{
4a082682 33 asm volatile ("sync; tlbia; isync" : : : "memory");
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34}
35static inline void _tlbil_pid(unsigned int pid)
36{
4a082682 37 asm volatile ("sync; tlbia; isync" : : : "memory");
2a4aca11 38}
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39#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
40
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41#else /* CONFIG_40x || CONFIG_8xx */
42extern void _tlbil_all(void);
43extern void _tlbil_pid(unsigned int pid);
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44#ifdef CONFIG_PPC_BOOK3E
45extern 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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55static 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)
61extern void _tlbil_va(unsigned long address, unsigned int pid,
62 unsigned int tsize, unsigned int ind);
63#else
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64extern void __tlbil_va(unsigned long address, unsigned int pid);
65static 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
e7f75ad0 72#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x)
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73extern void _tlbivax_bcast(unsigned long address, unsigned int pid,
74 unsigned int tsize, unsigned int ind);
75#else
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76static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
77 unsigned int tsize, unsigned int ind)
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78{
79 BUG();
80}
25d21ad6 81#endif
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82
83#else /* CONFIG_PPC_MMU_NOHASH */
84
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85extern void hash_preload(struct mm_struct *mm, unsigned long ea,
86 unsigned long access, unsigned long trap);
87
88
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89extern void _tlbie(unsigned long address);
90extern void _tlbia(void);
91
92#endif /* CONFIG_PPC_MMU_NOHASH */
93
ab1f9dac 94#ifdef CONFIG_PPC32
19f5465e 95
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96extern void mapin_ram(void);
97extern int map_page(unsigned long va, phys_addr_t pa, int flags);
7c5c4325 98extern void setbat(int index, unsigned long virt, phys_addr_t phys,
14cf11af 99 unsigned int size, int flags);
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100
101extern int __map_without_bats;
c5df7f77 102extern int __allow_ioremap_reserved;
14cf11af 103extern unsigned long ioremap_base;
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104extern unsigned int rtas_data, rtas_size;
105
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106struct hash_pte;
107extern struct hash_pte *Hash, *Hash_end;
14cf11af 108extern unsigned long Hash_size, Hash_mask;
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109
110#endif /* CONFIG_PPC32 */
111
112#ifdef CONFIG_PPC64
113extern int map_kernel_page(unsigned long ea, unsigned long pa, int flags);
114#endif /* CONFIG_PPC64 */
ab1f9dac 115
800fc3ee 116extern unsigned long ioremap_bot;
ab1f9dac 117extern unsigned long __max_low_memory;
09b5e63f 118extern phys_addr_t __initial_memory_limit_addr;
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119extern phys_addr_t total_memory;
120extern phys_addr_t total_lowmem;
99c62dd7 121extern phys_addr_t memstart_addr;
d7917ba7 122extern phys_addr_t lowmem_end_addr;
14cf11af 123
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124#ifdef CONFIG_WII
125extern unsigned long wii_hole_start;
126extern unsigned long wii_hole_size;
127
128extern unsigned long wii_mmu_mapin_mem2(unsigned long top);
129extern void wii_memory_fixups(void);
130#endif
131
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132/* ...and now those things that may be slightly different between processor
133 * architectures. -- Dan
134 */
135#if defined(CONFIG_8xx)
14cf11af 136#define MMU_init_hw() do { } while(0)
ae4cec47 137#define mmu_mapin_ram(top) (0UL)
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138
139#elif defined(CONFIG_4xx)
14cf11af 140extern void MMU_init_hw(void);
ae4cec47 141extern unsigned long mmu_mapin_ram(unsigned long top);
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142
143#elif defined(CONFIG_FSL_BOOKE)
14cf11af 144extern void MMU_init_hw(void);
ae4cec47 145extern unsigned long mmu_mapin_ram(unsigned long top);
14cf11af 146extern void adjust_total_lowmem(void);
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147extern void loadcam_entry(unsigned int index);
148
149struct tlbcam {
150 u32 MAS0;
151 u32 MAS1;
152 unsigned long MAS2;
153 u32 MAS3;
154 u32 MAS7;
155};
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156#elif defined(CONFIG_PPC32)
157/* anything 32-bit except 4xx or 8xx */
14cf11af 158extern void MMU_init_hw(void);
de32400d 159extern unsigned long mmu_mapin_ram(unsigned long top);
14cf11af 160#endif