summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/mm/mmu_decl.h
blob: 63b84a0d3b10baccf4e252382c1b66640b2e56e2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
/*
 * Declarations of procedures and variables shared between files
 * in arch/ppc/mm/.
 *
 *  Derived from arch/ppc/mm/init.c:
 *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
 *
 *  Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
 *  and Cort Dougan (PReP) (cort@cs.nmt.edu)
 *    Copyright (C) 1996 Paul Mackerras
 *
 *  Derived from "arch/i386/mm/init.c"
 *    Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version
 *  2 of the License, or (at your option) any later version.
 *
 */
#include <linux/mm.h>
#include <asm/tlbflush.h>
#include <asm/mmu.h>

#ifdef CONFIG_PPC_MMU_NOHASH

/*
 * On 40x and 8xx, we directly inline tlbia and tlbivax
 */
#if defined(CONFIG_40x) || defined(CONFIG_8xx)
static inline void _tlbil_all(void)
{
	asm volatile ("sync; tlbia; isync" : : : "memory");
}
static inline void _tlbil_pid(unsigned int pid)
{
	asm volatile ("sync; tlbia; isync" : : : "memory");
}
#define _tlbil_pid_noind(pid)	_tlbil_pid(pid)

#else /* CONFIG_40x || CONFIG_8xx */
extern void _tlbil_all(void);
extern void _tlbil_pid(unsigned int pid);
#ifdef CONFIG_PPC_BOOK3E
extern void _tlbil_pid_noind(unsigned int pid);
#else
#define _tlbil_pid_noind(pid)	_tlbil_pid(pid)
#endif
#endif /* !(CONFIG_40x || CONFIG_8xx) */

/*
 * On 8xx, we directly inline tlbie, on others, it's extern
 */
#ifdef CONFIG_8xx
static inline void _tlbil_va(unsigned long address, unsigned int pid,
			     unsigned int tsize, unsigned int ind)
{
	asm volatile ("tlbie %0; sync" : : "r" (address) : "memory");
}
#elif defined(CONFIG_PPC_BOOK3E)
extern void _tlbil_va(unsigned long address, unsigned int pid,
		      unsigned int tsize, unsigned int ind);
#else
extern void __tlbil_va(unsigned long address, unsigned int pid);
static inline void _tlbil_va(unsigned long address, unsigned int pid,
			     unsigned int tsize, unsigned int ind)
{
	__tlbil_va(address, pid);
}
#endif /* CONIFG_8xx */

#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x)
extern void _tlbivax_bcast(unsigned long address, unsigned int pid,
			   unsigned int tsize, unsigned int ind);
#else
static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
				   unsigned int tsize, unsigned int ind)
{
	BUG();
}
#endif

#else /* CONFIG_PPC_MMU_NOHASH */

extern void hash_preload(struct mm_struct *mm, unsigned long ea,
			 unsigned long access, unsigned long trap);


extern void _tlbie(unsigned long address);
extern void _tlbia(void);

#endif /* CONFIG_PPC_MMU_NOHASH */

#ifdef CONFIG_PPC32

extern void mapin_ram(void);
extern int map_page(unsigned long va, phys_addr_t pa, int flags);
extern void setbat(int index, unsigned long virt, phys_addr_t phys,
		   unsigned int size, int flags);

extern int __map_without_bats;
extern int __allow_ioremap_reserved;
extern unsigned long ioremap_base;
extern unsigned int rtas_data, rtas_size;

struct hash_pte;
extern struct hash_pte *Hash, *Hash_end;
extern unsigned long Hash_size, Hash_mask;

#endif /* CONFIG_PPC32 */

#ifdef CONFIG_PPC64
extern int map_kernel_page(unsigned long ea, unsigned long pa, int flags);
#endif /* CONFIG_PPC64 */

extern unsigned long ioremap_bot;
extern unsigned long __max_low_memory;
extern phys_addr_t __initial_memory_limit_addr;
extern phys_addr_t total_memory;
extern phys_addr_t total_lowmem;
extern phys_addr_t memstart_addr;
extern phys_addr_t lowmem_end_addr;

#ifdef CONFIG_WII
extern unsigned long wii_hole_start;
extern unsigned long wii_hole_size;

extern unsigned long wii_mmu_mapin_mem2(unsigned long top);
extern void wii_memory_fixups(void);
#endif

/* ...and now those things that may be slightly different between processor
 * architectures.  -- Dan
 */
#if defined(CONFIG_8xx)
#define MMU_init_hw()		do { } while(0)
#define mmu_mapin_ram(top)	(0UL)

#elif defined(CONFIG_4xx)
extern void MMU_init_hw(void);
extern unsigned long mmu_mapin_ram(unsigned long top);

#elif defined(CONFIG_FSL_BOOKE)
extern void MMU_init_hw(void);
extern unsigned long mmu_mapin_ram(unsigned long top);
extern void adjust_total_lowmem(void);
extern void loadcam_entry(unsigned int index);

struct tlbcam {
	u32	MAS0;
	u32	MAS1;
	unsigned long	MAS2;
	u32	MAS3;
	u32	MAS7;
};
#elif defined(CONFIG_PPC32)
/* anything 32-bit except 4xx or 8xx */
extern void MMU_init_hw(void);
extern unsigned long mmu_mapin_ram(unsigned long top);
#endif
OpenPOWER on IntegriCloud