arch/powerpc/include/asm/tlbflush.h

   1 #ifndef _ASM_POWERPC_TLBFLUSH_H
   2 #define _ASM_POWERPC_TLBFLUSH_H
   3
   4 /*
   5  * TLB flushing:
   6  *
   7  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
   8  *  - flush_tlb_page(vma, vmaddr) flushes one page
   9  *  - local_flush_tlb_mm(mm, full) flushes the specified mm context on
  10  *                           the local processor
  11  *  - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor
  12  *  - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
  13  *  - flush_tlb_range(vma, start, end) flushes a range of pages
  14  *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
  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 #ifdef __KERNEL__
  22
  23 #ifdef CONFIG_PPC_MMU_NOHASH
  24 /*
  25  * TLB flushing for software loaded TLB chips
  26  *
  27  * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range &
  28  * flush_tlb_kernel_range are best implemented as tlbia vs
  29  * specific tlbie's
  30  */
  31
  32 struct vm_area_struct;
  33 struct mm_struct;
  34
  35 #define MMU_NO_CONTEXT          ((unsigned int)-1)
  36
  37 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
  38                             unsigned long end);
  39 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
  40
  41 extern void local_flush_tlb_mm(struct mm_struct *mm);
  42 extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
  43
  44 extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
  45                                    int tsize, int ind);
  46
  47 #ifdef CONFIG_SMP
  48 extern void flush_tlb_mm(struct mm_struct *mm);
  49 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
  50 extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
  51                              int tsize, int ind);
  52 #else
  53 #define flush_tlb_mm(mm)                local_flush_tlb_mm(mm)
  54 #define flush_tlb_page(vma,addr)        local_flush_tlb_page(vma,addr)
  55 #define __flush_tlb_page(mm,addr,p,i)   __local_flush_tlb_page(mm,addr,p,i)
  56 #endif
  57
  58 #elif defined(CONFIG_PPC_STD_MMU_32)
  59
  60 #define MMU_NO_CONTEXT      (0)
  61 /*
  62  * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx
  63  */
  64 extern void flush_tlb_mm(struct mm_struct *mm);
  65 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
  66 extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr);
  67 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
  68                             unsigned long end);
  69 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
  70 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
  71                                         unsigned long vmaddr)
  72 {
  73         flush_tlb_page(vma, vmaddr);
  74 }
  75 static inline void local_flush_tlb_mm(struct mm_struct *mm)
  76 {
  77         flush_tlb_mm(mm);
  78 }
  79
  80 #elif defined(CONFIG_PPC_STD_MMU_64)
  81 #include <asm/book3s/64/tlbflush.h>
  82 #else
  83 #error Unsupported MMU type
  84 #endif
  85
  86 #endif /*__KERNEL__ */
  87 #endif /* _ASM_POWERPC_TLBFLUSH_H */