Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 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 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 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 | */ |
David Gibson | 6210230 | 2007-04-24 13:09:12 +1000 | [diff] [blame] | 21 | #include <linux/mm.h> |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 22 | #include <asm/tlbflush.h> |
| 23 | #include <asm/mmu.h> |
| 24 | |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 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 | { |
Benjamin Herrenschmidt | 4a08268 | 2009-01-06 17:56:51 +0000 | [diff] [blame] | 33 | asm volatile ("sync; tlbia; isync" : : : "memory"); |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 34 | } |
| 35 | static inline void _tlbil_pid(unsigned int pid) |
| 36 | { |
Benjamin Herrenschmidt | 4a08268 | 2009-01-06 17:56:51 +0000 | [diff] [blame] | 37 | asm volatile ("sync; tlbia; isync" : : : "memory"); |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 38 | } |
Benjamin Herrenschmidt | d4e167d | 2009-07-23 23:15:24 +0000 | [diff] [blame] | 39 | #define _tlbil_pid_noind(pid) _tlbil_pid(pid) |
| 40 | |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 41 | #else /* CONFIG_40x || CONFIG_8xx */ |
| 42 | extern void _tlbil_all(void); |
| 43 | extern void _tlbil_pid(unsigned int pid); |
Benjamin Herrenschmidt | 25d21ad | 2009-07-23 23:15:47 +0000 | [diff] [blame] | 44 | #ifdef CONFIG_PPC_BOOK3E |
| 45 | extern void _tlbil_pid_noind(unsigned int pid); |
| 46 | #else |
Benjamin Herrenschmidt | d4e167d | 2009-07-23 23:15:24 +0000 | [diff] [blame] | 47 | #define _tlbil_pid_noind(pid) _tlbil_pid(pid) |
Benjamin Herrenschmidt | 25d21ad | 2009-07-23 23:15:47 +0000 | [diff] [blame] | 48 | #endif |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 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 |
Benjamin Herrenschmidt | d4e167d | 2009-07-23 23:15:24 +0000 | [diff] [blame] | 55 | static inline void _tlbil_va(unsigned long address, unsigned int pid, |
| 56 | unsigned int tsize, unsigned int ind) |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 57 | { |
Benjamin Herrenschmidt | 4a08268 | 2009-01-06 17:56:51 +0000 | [diff] [blame] | 58 | asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 59 | } |
Benjamin Herrenschmidt | 25d21ad | 2009-07-23 23:15:47 +0000 | [diff] [blame] | 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 |
Benjamin Herrenschmidt | d4e167d | 2009-07-23 23:15:24 +0000 | [diff] [blame] | 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 | } |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 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 | */ |
Benjamin Herrenschmidt | 25d21ad | 2009-07-23 23:15:47 +0000 | [diff] [blame] | 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 |
Benjamin Herrenschmidt | d4e167d | 2009-07-23 23:15:24 +0000 | [diff] [blame] | 81 | static inline void _tlbivax_bcast(unsigned long address, unsigned int pid, |
| 82 | unsigned int tsize, unsigned int ind) |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 83 | { |
| 84 | BUG(); |
| 85 | } |
Benjamin Herrenschmidt | 25d21ad | 2009-07-23 23:15:47 +0000 | [diff] [blame] | 86 | #endif |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 87 | |
| 88 | #else /* CONFIG_PPC_MMU_NOHASH */ |
| 89 | |
Benjamin Herrenschmidt | ee4f2ea | 2007-04-12 15:30:22 +1000 | [diff] [blame] | 90 | extern void hash_preload(struct mm_struct *mm, unsigned long ea, |
| 91 | unsigned long access, unsigned long trap); |
| 92 | |
| 93 | |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 94 | extern void _tlbie(unsigned long address); |
| 95 | extern void _tlbia(void); |
| 96 | |
| 97 | #endif /* CONFIG_PPC_MMU_NOHASH */ |
| 98 | |
Paul Mackerras | ab1f9da | 2005-10-10 21:58:35 +1000 | [diff] [blame] | 99 | #ifdef CONFIG_PPC32 |
Trent Piepho | 19f5465 | 2008-12-08 19:34:55 -0800 | [diff] [blame] | 100 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 101 | extern void mapin_ram(void); |
| 102 | extern int map_page(unsigned long va, phys_addr_t pa, int flags); |
Becky Bruce | 7c5c432 | 2008-06-14 09:41:42 +1000 | [diff] [blame] | 103 | extern void setbat(int index, unsigned long virt, phys_addr_t phys, |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 104 | unsigned int size, int flags); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 105 | |
| 106 | extern int __map_without_bats; |
Albert Herranz | c5df7f7 | 2009-12-12 06:31:54 +0000 | [diff] [blame] | 107 | extern int __allow_ioremap_reserved; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 108 | extern unsigned long ioremap_base; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 109 | extern unsigned int rtas_data, rtas_size; |
| 110 | |
David Gibson | 8e561e7 | 2007-06-13 14:52:56 +1000 | [diff] [blame] | 111 | struct hash_pte; |
| 112 | extern struct hash_pte *Hash, *Hash_end; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 113 | extern unsigned long Hash_size, Hash_mask; |
Benjamin Herrenschmidt | 32a7494 | 2009-07-23 23:15:58 +0000 | [diff] [blame] | 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 */ |
Paul Mackerras | ab1f9da | 2005-10-10 21:58:35 +1000 | [diff] [blame] | 120 | |
David Gibson | 800fc3e | 2005-11-16 15:43:48 +1100 | [diff] [blame] | 121 | extern unsigned long ioremap_bot; |
Paul Mackerras | ab1f9da | 2005-10-10 21:58:35 +1000 | [diff] [blame] | 122 | extern unsigned long __max_low_memory; |
Kumar Gala | 09b5e63 | 2008-04-16 05:52:25 +1000 | [diff] [blame] | 123 | extern phys_addr_t __initial_memory_limit_addr; |
Stefan Roese | 2bf3016 | 2008-07-10 01:09:23 +1000 | [diff] [blame] | 124 | extern phys_addr_t total_memory; |
| 125 | extern phys_addr_t total_lowmem; |
Kumar Gala | 99c62dd | 2008-04-16 05:52:21 +1000 | [diff] [blame] | 126 | extern phys_addr_t memstart_addr; |
Kumar Gala | d7917ba | 2008-04-16 05:52:22 +1000 | [diff] [blame] | 127 | extern phys_addr_t lowmem_end_addr; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 128 | |
Albert Herranz | de32400 | 2009-12-12 06:31:53 +0000 | [diff] [blame] | 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 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 137 | /* ...and now those things that may be slightly different between processor |
| 138 | * architectures. -- Dan |
| 139 | */ |
| 140 | #if defined(CONFIG_8xx) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 141 | #define MMU_init_hw() do { } while(0) |
Stephen Rothwell | ae4cec4 | 2009-12-14 09:04:24 -0700 | [diff] [blame] | 142 | #define mmu_mapin_ram(top) (0UL) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 143 | |
| 144 | #elif defined(CONFIG_4xx) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 145 | extern void MMU_init_hw(void); |
Stephen Rothwell | ae4cec4 | 2009-12-14 09:04:24 -0700 | [diff] [blame] | 146 | extern unsigned long mmu_mapin_ram(unsigned long top); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 147 | |
| 148 | #elif defined(CONFIG_FSL_BOOKE) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 149 | extern void MMU_init_hw(void); |
Stephen Rothwell | ae4cec4 | 2009-12-14 09:04:24 -0700 | [diff] [blame] | 150 | extern unsigned long mmu_mapin_ram(unsigned long top); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 151 | extern void adjust_total_lowmem(void); |
| 152 | |
Paul Mackerras | ab1f9da | 2005-10-10 21:58:35 +1000 | [diff] [blame] | 153 | #elif defined(CONFIG_PPC32) |
| 154 | /* anything 32-bit except 4xx or 8xx */ |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 155 | extern void MMU_init_hw(void); |
Albert Herranz | de32400 | 2009-12-12 06:31:53 +0000 | [diff] [blame] | 156 | extern unsigned long mmu_mapin_ram(unsigned long top); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 157 | #endif |