2 * Declarations of procedures and variables shared between files
5 * Derived from arch/ppc/mm/init.c:
6 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
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
12 * Derived from "arch/i386/mm/init.c"
13 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
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.
22 #include <asm/tlbflush.h>
25 #ifdef CONFIG_PPC_MMU_NOHASH
28 * On 40x and 8xx, we directly inline tlbia and tlbivax
30 #if defined(CONFIG_40x) || defined(CONFIG_8xx)
31 static inline void _tlbil_all(void)
33 asm volatile ("sync; tlbia; isync" : : : "memory");
35 static inline void _tlbil_pid(unsigned int pid)
37 asm volatile ("sync; tlbia; isync" : : : "memory");
39 #else /* CONFIG_40x || CONFIG_8xx */
40 extern void _tlbil_all(void);
41 extern void _tlbil_pid(unsigned int pid);
42 #endif /* !(CONFIG_40x || CONFIG_8xx) */
45 * On 8xx, we directly inline tlbie, on others, it's extern
48 static inline void _tlbil_va(unsigned long address, unsigned int pid)
50 asm volatile ("tlbie %0; sync" : : "r" (address) : "memory");
52 #else /* CONFIG_8xx */
53 extern void _tlbil_va(unsigned long address, unsigned int pid);
54 #endif /* CONIFG_8xx */
57 * As of today, we don't support tlbivax broadcast on any
58 * implementation. When that becomes the case, this will be
61 static inline void _tlbivax_bcast(unsigned long address, unsigned int pid)
66 #else /* CONFIG_PPC_MMU_NOHASH */
68 extern void hash_preload(struct mm_struct *mm, unsigned long ea,
69 unsigned long access, unsigned long trap);
72 extern void _tlbie(unsigned long address);
73 extern void _tlbia(void);
75 #endif /* CONFIG_PPC_MMU_NOHASH */
87 extern void mapin_ram(void);
88 extern int map_page(unsigned long va, phys_addr_t pa, int flags);
89 extern void setbat(int index, unsigned long virt, phys_addr_t phys,
90 unsigned int size, int flags);
91 extern void settlbcam(int index, unsigned long virt, phys_addr_t phys,
92 unsigned int size, int flags, unsigned int pid);
93 extern void invalidate_tlbcam_entry(int index);
95 extern int __map_without_bats;
96 extern unsigned long ioremap_base;
97 extern unsigned int rtas_data, rtas_size;
100 extern struct hash_pte *Hash, *Hash_end;
101 extern unsigned long Hash_size, Hash_mask;
104 extern unsigned long ioremap_bot;
105 extern unsigned long __max_low_memory;
106 extern phys_addr_t __initial_memory_limit_addr;
107 extern phys_addr_t total_memory;
108 extern phys_addr_t total_lowmem;
109 extern phys_addr_t memstart_addr;
110 extern phys_addr_t lowmem_end_addr;
112 /* ...and now those things that may be slightly different between processor
113 * architectures. -- Dan
115 #if defined(CONFIG_8xx)
116 #define MMU_init_hw() do { } while(0)
117 #define mmu_mapin_ram() (0UL)
119 #elif defined(CONFIG_4xx)
120 extern void MMU_init_hw(void);
121 extern unsigned long mmu_mapin_ram(void);
123 #elif defined(CONFIG_FSL_BOOKE)
124 extern void MMU_init_hw(void);
125 extern unsigned long mmu_mapin_ram(void);
126 extern void adjust_total_lowmem(void);
128 #elif defined(CONFIG_PPC32)
129 /* anything 32-bit except 4xx or 8xx */
130 extern void MMU_init_hw(void);
131 extern unsigned long mmu_mapin_ram(void);