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Linux/arch/powerpc/mm/mmu_decl.h

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  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/tlbflush.h>
 23 #include <asm/mmu.h>
 24 
 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 {
 33         asm volatile ("sync; tlbia; isync" : : : "memory");
 34 }
 35 static inline void _tlbil_pid(unsigned int pid)
 36 {
 37         asm volatile ("sync; tlbia; isync" : : : "memory");
 38 }
 39 #define _tlbil_pid_noind(pid)   _tlbil_pid(pid)
 40 
 41 #else /* CONFIG_40x || CONFIG_8xx */
 42 extern void _tlbil_all(void);
 43 extern void _tlbil_pid(unsigned int pid);
 44 #ifdef CONFIG_PPC_BOOK3E
 45 extern void _tlbil_pid_noind(unsigned int pid);
 46 #else
 47 #define _tlbil_pid_noind(pid)   _tlbil_pid(pid)
 48 #endif
 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
 55 static inline void _tlbil_va(unsigned long address, unsigned int pid,
 56                              unsigned int tsize, unsigned int ind)
 57 {
 58         asm volatile ("tlbie %0; sync" : : "r" (address) : "memory");
 59 }
 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
 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 }
 70 #endif /* CONFIG_8xx */
 71 
 72 #if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x)
 73 extern void _tlbivax_bcast(unsigned long address, unsigned int pid,
 74                            unsigned int tsize, unsigned int ind);
 75 #else
 76 static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
 77                                    unsigned int tsize, unsigned int ind)
 78 {
 79         BUG();
 80 }
 81 #endif
 82 
 83 #else /* CONFIG_PPC_MMU_NOHASH */
 84 
 85 extern void hash_preload(struct mm_struct *mm, unsigned long ea,
 86                          unsigned long access, unsigned long trap);
 87 
 88 
 89 extern void _tlbie(unsigned long address);
 90 extern void _tlbia(void);
 91 
 92 #endif /* CONFIG_PPC_MMU_NOHASH */
 93 
 94 #ifdef CONFIG_PPC32
 95 
 96 extern void mapin_ram(void);
 97 extern int map_page(unsigned long va, phys_addr_t pa, int flags);
 98 extern void setbat(int index, unsigned long virt, phys_addr_t phys,
 99                    unsigned int size, pgprot_t prot);
100 
101 extern int __map_without_bats;
102 extern int __allow_ioremap_reserved;
103 extern unsigned long ioremap_base;
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 #ifdef CONFIG_PPC64
113 extern int map_kernel_page(unsigned long ea, unsigned long pa, int flags);
114 #endif /* CONFIG_PPC64 */
115 
116 extern unsigned long ioremap_bot;
117 extern unsigned long __max_low_memory;
118 extern phys_addr_t __initial_memory_limit_addr;
119 extern phys_addr_t total_memory;
120 extern phys_addr_t total_lowmem;
121 extern phys_addr_t memstart_addr;
122 extern phys_addr_t lowmem_end_addr;
123 
124 #ifdef CONFIG_WII
125 extern unsigned long wii_hole_start;
126 extern unsigned long wii_hole_size;
127 
128 extern unsigned long wii_mmu_mapin_mem2(unsigned long top);
129 extern void wii_memory_fixups(void);
130 #endif
131 
132 /* ...and now those things that may be slightly different between processor
133  * architectures.  -- Dan
134  */
135 #if defined(CONFIG_8xx)
136 #define MMU_init_hw()           do { } while(0)
137 #define mmu_mapin_ram(top)      (0UL)
138 
139 #elif defined(CONFIG_4xx)
140 extern void MMU_init_hw(void);
141 extern unsigned long mmu_mapin_ram(unsigned long top);
142 
143 #elif defined(CONFIG_PPC_FSL_BOOK3E)
144 extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx);
145 extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
146                                  phys_addr_t phys);
147 #ifdef CONFIG_PPC32
148 extern void MMU_init_hw(void);
149 extern unsigned long mmu_mapin_ram(unsigned long top);
150 extern void adjust_total_lowmem(void);
151 extern int switch_to_as1(void);
152 extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu);
153 #endif
154 extern void loadcam_entry(unsigned int index);
155 
156 struct tlbcam {
157         u32     MAS0;
158         u32     MAS1;
159         unsigned long   MAS2;
160         u32     MAS3;
161         u32     MAS7;
162 };
163 #elif defined(CONFIG_PPC32)
164 /* anything 32-bit except 4xx or 8xx */
165 extern void MMU_init_hw(void);
166 extern unsigned long mmu_mapin_ram(unsigned long top);
167 #endif
168 

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