release/src-rt-6.x/linux/linux-2.6/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  *  Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
  12  *
  13  *  Derived from "arch/i386/mm/init.c"
  14  *    Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
  15  *
  16  *  This program is free software; you can redistribute it and/or
  17  *  modify it under the terms of the GNU General Public License
  18  *  as published by the Free Software Foundation; either version
  19  *  2 of the License, or (at your option) any later version.
  20  *
  21  */
  22 #include <linux/mm.h>
  23 #include <asm/tlbflush.h>
  24 #include <asm/mmu.h>
  25
  26 extern void hash_preload(struct mm_struct *mm, unsigned long ea,
  27                          unsigned long access, unsigned long trap);
  28
  29
  30 #ifdef CONFIG_PPC32
  31 extern void mapin_ram(void);
  32 extern int map_page(unsigned long va, phys_addr_t pa, int flags);
  33 extern void setbat(int index, unsigned long virt, unsigned long phys,
  34                    unsigned int size, int flags);
  35 extern void settlbcam(int index, unsigned long virt, phys_addr_t phys,
  36                       unsigned int size, int flags, unsigned int pid);
  37 extern void invalidate_tlbcam_entry(int index);
  38
  39 extern int __map_without_bats;
  40 extern unsigned long ioremap_base;
  41 extern unsigned int rtas_data, rtas_size;
  42
  43 struct _PTE;
  44 extern struct _PTE *Hash, *Hash_end;
  45 extern unsigned long Hash_size, Hash_mask;
  46
  47 extern unsigned int num_tlbcam_entries;
  48 #endif
  49
  50 extern unsigned long ioremap_bot;
  51 extern unsigned long __max_low_memory;
  52 extern unsigned long __initial_memory_limit;
  53 extern unsigned long total_memory;
  54 extern unsigned long total_lowmem;
  55
  56 /* ...and now those things that may be slightly different between processor
  57  * architectures.  -- Dan
  58  */
  59 #if defined(CONFIG_8xx)
  60 #define flush_HPTE(X, va, pg)   _tlbie(va)
  61 #define MMU_init_hw()           do { } while(0)
  62 #define mmu_mapin_ram()         (0UL)
  63
  64 #elif defined(CONFIG_4xx)
  65 #define flush_HPTE(X, va, pg)   _tlbie(va)
  66 extern void MMU_init_hw(void);
  67 extern unsigned long mmu_mapin_ram(void);
  68
  69 #elif defined(CONFIG_FSL_BOOKE)
  70 #define flush_HPTE(X, va, pg)   _tlbie(va)
  71 extern void MMU_init_hw(void);
  72 extern unsigned long mmu_mapin_ram(void);
  73 extern void adjust_total_lowmem(void);
  74
  75 #elif defined(CONFIG_PPC32)
  76 /* anything 32-bit except 4xx or 8xx */
  77 extern void MMU_init_hw(void);
  78 extern unsigned long mmu_mapin_ram(void);
  79
  80 /* Be careful....this needs to be updated if we ever encounter 603 SMPs,
  81  * which includes all new 82xx processors.  We need tlbie/tlbsync here
  82  * in that case (I think). -- Dan.
  83  */
  84 static inline void flush_HPTE(unsigned context, unsigned long va,
  85                               unsigned long pdval)
  86 {
  87         if ((Hash != 0) &&
  88             cpu_has_feature(CPU_FTR_HPTE_TABLE))
  89                 flush_hash_pages(0, va, pdval, 1);
  90         else
  91                 _tlbie(va);
  92 }
  93 #else /* CONFIG_PPC64 */
  94 /* imalloc region types */
  95 #define IM_REGION_UNUSED        0x1
  96 #define IM_REGION_SUBSET        0x2
  97 #define IM_REGION_EXISTS        0x4
  98 #define IM_REGION_OVERLAP       0x8
  99 #define IM_REGION_SUPERSET      0x10
 100
 101 extern struct vm_struct * im_get_free_area(unsigned long size);
 102 extern struct vm_struct * im_get_area(unsigned long v_addr, unsigned long size,
 103                                       int region_type);
 104 extern void im_free(void *addr);
 105 #endif