arch/powerpc/mm/mmu_decl.h

   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 extern unsigned long mmu_mapin_ram(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