mmu_decl.h
5.49 KB
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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* 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
*/
#include <linux/mm.h>
#include <asm/mmu.h>
#ifdef CONFIG_PPC_MMU_NOHASH
#include <asm/trace.h>
/*
* On 40x and 8xx, we directly inline tlbia and tlbivax
*/
#if defined(CONFIG_40x) || defined(CONFIG_PPC_8xx)
static inline void _tlbil_all(void)
{
asm volatile ("sync; tlbia; isync" : : : "memory");
trace_tlbia(MMU_NO_CONTEXT);
}
static inline void _tlbil_pid(unsigned int pid)
{
asm volatile ("sync; tlbia; isync" : : : "memory");
trace_tlbia(pid);
}
#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
#else /* CONFIG_40x || CONFIG_PPC_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_PPC_8xx) */
/*
* On 8xx, we directly inline tlbie, on others, it's extern
*/
#ifdef CONFIG_PPC_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");
trace_tlbie(0, 0, address, pid, 0, 0, 0);
}
#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 /* CONFIG_PPC_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
static inline void print_system_hash_info(void) {}
#else /* CONFIG_PPC_MMU_NOHASH */
extern void _tlbie(unsigned long address);
extern void _tlbia(void);
void print_system_hash_info(void);
#endif /* CONFIG_PPC_MMU_NOHASH */
void settlbcam(int index, unsigned long virt, phys_addr_t phys,
unsigned long size, unsigned long flags, unsigned int pid);
void cleartlbcam(unsigned long virt, unsigned int pid);
#ifdef CONFIG_PPC32
void hash_preload(struct mm_struct *mm, unsigned long ea);
extern void mapin_ram(void);
extern void setbat(int index, unsigned long virt, phys_addr_t phys,
unsigned int size, pgprot_t prot);
extern int __map_without_bats;
extern unsigned int rtas_data, rtas_size;
struct hash_pte;
extern struct hash_pte *Hash;
extern u8 early_hash[];
#endif /* CONFIG_PPC32 */
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
*/
#ifdef CONFIG_PPC32
extern void MMU_init_hw(void);
void MMU_init_hw_patch(void);
unsigned long mmu_mapin_ram(unsigned long base, unsigned long top);
#endif
#ifdef CONFIG_PPC_FSL_BOOK3E
extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx,
bool dryrun);
extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
phys_addr_t phys);
#ifdef CONFIG_PPC32
extern void adjust_total_lowmem(void);
extern int switch_to_as1(void);
extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu);
void create_kaslr_tlb_entry(int entry, unsigned long virt, phys_addr_t phys);
void reloc_kernel_entry(void *fdt, int addr);
extern int is_second_reloc;
#endif
extern void loadcam_entry(unsigned int index);
extern void loadcam_multi(int first_idx, int num, int tmp_idx);
#ifdef CONFIG_RANDOMIZE_BASE
void kaslr_early_init(void *dt_ptr, phys_addr_t size);
void kaslr_late_init(void);
#else
static inline void kaslr_early_init(void *dt_ptr, phys_addr_t size) {}
static inline void kaslr_late_init(void) {}
#endif
struct tlbcam {
u32 MAS0;
u32 MAS1;
unsigned long MAS2;
u32 MAS3;
u32 MAS7;
};
#endif
#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx)
/* 6xx have BATS */
/* FSL_BOOKE have TLBCAM */
/* 8xx have LTLB */
phys_addr_t v_block_mapped(unsigned long va);
unsigned long p_block_mapped(phys_addr_t pa);
#else
static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; }
static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; }
#endif
#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_PPC_8xx)
void mmu_mark_initmem_nx(void);
void mmu_mark_rodata_ro(void);
#else
static inline void mmu_mark_initmem_nx(void) { }
static inline void mmu_mark_rodata_ro(void) { }
#endif
#ifdef CONFIG_PPC_8xx
void __init mmu_mapin_immr(void);
#endif
#ifdef CONFIG_PPC_DEBUG_WX
void ptdump_check_wx(void);
#else
static inline void ptdump_check_wx(void) { }
#endif