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 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 */ 21 #include <linux/mm.h> 22 #include <asm/mmu.h> 23 24 #ifdef CONFIG_PPC_MMU_NOHASH 25 26 /* 27 * On 40x and 8xx, we directly inline tlbia and tlbivax 28 */ 29 #if defined(CONFIG_40x) || defined(CONFIG_PPC_8xx) 30 static inline void _tlbil_all(void) 31 { 32 asm volatile ("sync; tlbia; isync" : : : "memory"); 33 } 34 static inline void _tlbil_pid(unsigned int pid) 35 { 36 asm volatile ("sync; tlbia; isync" : : : "memory"); 37 } 38 #define _tlbil_pid_noind(pid) _tlbil_pid(pid) 39 40 #else /* CONFIG_40x || CONFIG_PPC_8xx */ 41 extern void _tlbil_all(void); 42 extern void _tlbil_pid(unsigned int pid); 43 #ifdef CONFIG_PPC_BOOK3E 44 extern void _tlbil_pid_noind(unsigned int pid); 45 #else 46 #define _tlbil_pid_noind(pid) _tlbil_pid(pid) 47 #endif 48 #endif /* !(CONFIG_40x || CONFIG_PPC_8xx) */ 49 50 /* 51 * On 8xx, we directly inline tlbie, on others, it's extern 52 */ 53 #ifdef CONFIG_PPC_8xx 54 static inline void _tlbil_va(unsigned long address, unsigned int pid, 55 unsigned int tsize, unsigned int ind) 56 { 57 asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); 58 } 59 #elif defined(CONFIG_PPC_BOOK3E) 60 extern void _tlbil_va(unsigned long address, unsigned int pid, 61 unsigned int tsize, unsigned int ind); 62 #else 63 extern void __tlbil_va(unsigned long address, unsigned int pid); 64 static inline void _tlbil_va(unsigned long address, unsigned int pid, 65 unsigned int tsize, unsigned int ind) 66 { 67 __tlbil_va(address, pid); 68 } 69 #endif /* CONFIG_PPC_8xx */ 70 71 #if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x) 72 extern void _tlbivax_bcast(unsigned long address, unsigned int pid, 73 unsigned int tsize, unsigned int ind); 74 #else 75 static inline void _tlbivax_bcast(unsigned long address, unsigned int pid, 76 unsigned int tsize, unsigned int ind) 77 { 78 BUG(); 79 } 80 #endif 81 82 #else /* CONFIG_PPC_MMU_NOHASH */ 83 84 extern void hash_preload(struct mm_struct *mm, unsigned long ea, 85 unsigned long access, unsigned long trap); 86 87 88 extern void _tlbie(unsigned long address); 89 extern void _tlbia(void); 90 91 #endif /* CONFIG_PPC_MMU_NOHASH */ 92 93 #ifdef CONFIG_PPC32 94 95 extern void mapin_ram(void); 96 extern void setbat(int index, unsigned long virt, phys_addr_t phys, 97 unsigned int size, pgprot_t prot); 98 99 extern int __map_without_bats; 100 extern unsigned int rtas_data, rtas_size; 101 102 struct hash_pte; 103 extern struct hash_pte *Hash, *Hash_end; 104 extern unsigned long Hash_size, Hash_mask; 105 106 #endif /* CONFIG_PPC32 */ 107 108 extern unsigned long ioremap_bot; 109 extern unsigned long __max_low_memory; 110 extern phys_addr_t __initial_memory_limit_addr; 111 extern phys_addr_t total_memory; 112 extern phys_addr_t total_lowmem; 113 extern phys_addr_t memstart_addr; 114 extern phys_addr_t lowmem_end_addr; 115 116 #ifdef CONFIG_WII 117 extern unsigned long wii_hole_start; 118 extern unsigned long wii_hole_size; 119 120 extern unsigned long wii_mmu_mapin_mem2(unsigned long top); 121 extern void wii_memory_fixups(void); 122 #endif 123 124 /* ...and now those things that may be slightly different between processor 125 * architectures. -- Dan 126 */ 127 #ifdef CONFIG_PPC32 128 extern void MMU_init_hw(void); 129 extern unsigned long mmu_mapin_ram(unsigned long top); 130 #endif 131 132 #ifdef CONFIG_PPC_FSL_BOOK3E 133 extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, 134 bool dryrun); 135 extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt, 136 phys_addr_t phys); 137 #ifdef CONFIG_PPC32 138 extern void adjust_total_lowmem(void); 139 extern int switch_to_as1(void); 140 extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu); 141 #endif 142 extern void loadcam_entry(unsigned int index); 143 extern void loadcam_multi(int first_idx, int num, int tmp_idx); 144 145 struct tlbcam { 146 u32 MAS0; 147 u32 MAS1; 148 unsigned long MAS2; 149 u32 MAS3; 150 u32 MAS7; 151 }; 152 #endif 153 154 #if defined(CONFIG_6xx) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx) 155 /* 6xx have BATS */ 156 /* FSL_BOOKE have TLBCAM */ 157 /* 8xx have LTLB */ 158 phys_addr_t v_block_mapped(unsigned long va); 159 unsigned long p_block_mapped(phys_addr_t pa); 160 #else 161 static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; } 162 static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; } 163 #endif 164