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 #include <asm/trace.h> 26 27 /* 28 * On 40x and 8xx, we directly inline tlbia and tlbivax 29 */ 30 #if defined(CONFIG_40x) || defined(CONFIG_PPC_8xx) 31 static inline void _tlbil_all(void) 32 { 33 asm volatile ("sync; tlbia; isync" : : : "memory"); 34 trace_tlbia(MMU_NO_CONTEXT); 35 } 36 static inline void _tlbil_pid(unsigned int pid) 37 { 38 asm volatile ("sync; tlbia; isync" : : : "memory"); 39 trace_tlbia(pid); 40 } 41 #define _tlbil_pid_noind(pid) _tlbil_pid(pid) 42 43 #else /* CONFIG_40x || CONFIG_PPC_8xx */ 44 extern void _tlbil_all(void); 45 extern void _tlbil_pid(unsigned int pid); 46 #ifdef CONFIG_PPC_BOOK3E 47 extern void _tlbil_pid_noind(unsigned int pid); 48 #else 49 #define _tlbil_pid_noind(pid) _tlbil_pid(pid) 50 #endif 51 #endif /* !(CONFIG_40x || CONFIG_PPC_8xx) */ 52 53 /* 54 * On 8xx, we directly inline tlbie, on others, it's extern 55 */ 56 #ifdef CONFIG_PPC_8xx 57 static inline void _tlbil_va(unsigned long address, unsigned int pid, 58 unsigned int tsize, unsigned int ind) 59 { 60 asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); 61 trace_tlbie(0, 0, address, pid, 0, 0, 0); 62 } 63 #elif defined(CONFIG_PPC_BOOK3E) 64 extern void _tlbil_va(unsigned long address, unsigned int pid, 65 unsigned int tsize, unsigned int ind); 66 #else 67 extern void __tlbil_va(unsigned long address, unsigned int pid); 68 static inline void _tlbil_va(unsigned long address, unsigned int pid, 69 unsigned int tsize, unsigned int ind) 70 { 71 __tlbil_va(address, pid); 72 } 73 #endif /* CONFIG_PPC_8xx */ 74 75 #if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x) 76 extern void _tlbivax_bcast(unsigned long address, unsigned int pid, 77 unsigned int tsize, unsigned int ind); 78 #else 79 static inline void _tlbivax_bcast(unsigned long address, unsigned int pid, 80 unsigned int tsize, unsigned int ind) 81 { 82 BUG(); 83 } 84 #endif 85 86 #else /* CONFIG_PPC_MMU_NOHASH */ 87 88 extern void hash_preload(struct mm_struct *mm, unsigned long ea, 89 bool is_exec, unsigned long trap); 90 91 92 extern void _tlbie(unsigned long address); 93 extern void _tlbia(void); 94 95 #endif /* CONFIG_PPC_MMU_NOHASH */ 96 97 #ifdef CONFIG_PPC32 98 99 extern void mapin_ram(void); 100 extern void setbat(int index, unsigned long virt, phys_addr_t phys, 101 unsigned int size, pgprot_t prot); 102 103 extern int __map_without_bats; 104 extern unsigned int rtas_data, rtas_size; 105 106 struct hash_pte; 107 extern struct hash_pte *Hash, *Hash_end; 108 extern unsigned long Hash_size, Hash_mask; 109 110 #endif /* CONFIG_PPC32 */ 111 112 extern unsigned long ioremap_bot; 113 extern unsigned long __max_low_memory; 114 extern phys_addr_t __initial_memory_limit_addr; 115 extern phys_addr_t total_memory; 116 extern phys_addr_t total_lowmem; 117 extern phys_addr_t memstart_addr; 118 extern phys_addr_t lowmem_end_addr; 119 120 #ifdef CONFIG_WII 121 extern unsigned long wii_hole_start; 122 extern unsigned long wii_hole_size; 123 124 extern unsigned long wii_mmu_mapin_mem2(unsigned long top); 125 extern void wii_memory_fixups(void); 126 #endif 127 128 /* ...and now those things that may be slightly different between processor 129 * architectures. -- Dan 130 */ 131 #ifdef CONFIG_PPC32 132 extern void MMU_init_hw(void); 133 unsigned long mmu_mapin_ram(unsigned long base, unsigned long top); 134 #endif 135 136 #ifdef CONFIG_PPC_FSL_BOOK3E 137 extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, 138 bool dryrun); 139 extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt, 140 phys_addr_t phys); 141 #ifdef CONFIG_PPC32 142 extern void adjust_total_lowmem(void); 143 extern int switch_to_as1(void); 144 extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu); 145 #endif 146 extern void loadcam_entry(unsigned int index); 147 extern void loadcam_multi(int first_idx, int num, int tmp_idx); 148 149 struct tlbcam { 150 u32 MAS0; 151 u32 MAS1; 152 unsigned long MAS2; 153 u32 MAS3; 154 u32 MAS7; 155 }; 156 #endif 157 158 #if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx) 159 /* 6xx have BATS */ 160 /* FSL_BOOKE have TLBCAM */ 161 /* 8xx have LTLB */ 162 phys_addr_t v_block_mapped(unsigned long va); 163 unsigned long p_block_mapped(phys_addr_t pa); 164 #else 165 static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; } 166 static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; } 167 #endif 168 169 #if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_PPC_8xx) 170 void mmu_mark_initmem_nx(void); 171 void mmu_mark_rodata_ro(void); 172 #else 173 static inline void mmu_mark_initmem_nx(void) { } 174 static inline void mmu_mark_rodata_ro(void) { } 175 #endif 176