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 #include <linux/config.h>
  17 #ifndef __powerpc64__
  18 #include <asm/pgtable.h>
  19 #endif
  20 #include <asm/pgalloc.h>
  21 #include <asm/tlbflush.h>
  22 #ifndef __powerpc64__
  23 #include <asm/page.h>
  24 #include <asm/mmu.h>
  25 #endif
  26
  27 struct mmu_gather;
  28
  29 #define tlb_start_vma(tlb, vma) do { } while (0)
  30 #define tlb_end_vma(tlb, vma)   do { } while (0)
  31
  32 #if !defined(CONFIG_PPC_STD_MMU)
  33
  34 #define tlb_flush(tlb)                  flush_tlb_mm((tlb)->mm)
  35
  36 #elif defined(__powerpc64__)
  37
  38 extern void pte_free_finish(void);
  39
  40 static inline void tlb_flush(struct mmu_gather *tlb)
  41 {
  42         flush_tlb_pending();
  43         pte_free_finish();
  44 }
  45
  46 #else
  47
  48 extern void tlb_flush(struct mmu_gather *tlb);
  49
  50 #endif
  51
  52 /* Get the generic bits... */
  53 #include <asm-generic/tlb.h>
  54
  55 #if !defined(CONFIG_PPC_STD_MMU) || defined(__powerpc64__)
  56
  57 #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
  58
  59 #else
  60 extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
  61                              unsigned long address);
  62
  63 static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
  64                                         unsigned long address)
  65 {
  66         if (pte_val(*ptep) & _PAGE_HASHPTE)
  67                 flush_hash_entry(tlb->mm, ptep, address);
  68 }
  69
  70 #endif
  71 #endif /* __KERNEL__ */
  72 #endif /* __ASM_POWERPC_TLB_H */