include/asm-powerpc/tlb.h

   1 /*
   2  *      TLB shootdown specifics for powerpc
   3  *
   4  * Copyright (C) 2002 Anton Blanchard, IBM Corp.
   5  * Copyright (C) 2002 Paul Mackerras, IBM Corp.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version
  10  * 2 of the License, or (at your option) any later version.
  11  */
  12 #ifndef _ASM_POWERPC_TLB_H
  13 #define _ASM_POWERPC_TLB_H
  14 #ifdef __KERNEL__
  15
  16 #ifndef __powerpc64__
  17 #include <asm/pgtable.h>
  18 #endif
  19 #include <asm/pgalloc.h>
  20 #include <asm/tlbflush.h>
  21 #ifndef __powerpc64__
  22 #include <asm/page.h>
  23 #include <asm/mmu.h>
  24 #endif
  25
  26 struct mmu_gather;
  27
  28 #define tlb_start_vma(tlb, vma) do { } while (0)
  29 #define tlb_end_vma(tlb, vma)   do { } while (0)
  30
  31 #if !defined(CONFIG_PPC_STD_MMU)
  32
  33 #define tlb_flush(tlb)                  flush_tlb_mm((tlb)->mm)
  34
  35 #elif defined(__powerpc64__)
  36
  37 extern void pte_free_finish(void);
  38
  39 static inline void tlb_flush(struct mmu_gather *tlb)
  40 {
  41         flush_tlb_pending();
  42         pte_free_finish();
  43 }
  44
  45 #else
  46
  47 extern void tlb_flush(struct mmu_gather *tlb);
  48
  49 #endif
  50
  51 /* Get the generic bits... */
  52 #include <asm-generic/tlb.h>
  53
  54 #if !defined(CONFIG_PPC_STD_MMU) || defined(__powerpc64__)
  55
  56 #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
  57
  58 #else
  59 extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
  60                              unsigned long address);
  61
  62 static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
  63                                         unsigned long address)
  64 {
  65         if (pte_val(*ptep) & _PAGE_HASHPTE)
  66                 flush_hash_entry(tlb->mm, ptep, address);
  67 }
  68
  69 #endif
  70 #endif /* __KERNEL__ */
  71 #endif /* __ASM_POWERPC_TLB_H */