arch/xtensa/include/asm/tlb.h

   1 /*
   2  * include/asm-xtensa/tlb.h
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * Copyright (C) 2001 - 2005 Tensilica Inc.
   9  */
  10
  11 #ifndef _XTENSA_TLB_H
  12 #define _XTENSA_TLB_H
  13
  14 #include <asm/cache.h>
  15 #include <asm/page.h>
  16
  17 #if (DCACHE_WAY_SIZE <= PAGE_SIZE)
  18
  19 /* Note, read http://lkml.org/lkml/2004/1/15/6 */
  20
  21 # define tlb_start_vma(tlb,vma)                 do { } while (0)
  22 # define tlb_end_vma(tlb,vma)                   do { } while (0)
  23
  24 #else
  25
  26 # define tlb_start_vma(tlb, vma)                                              \
  27         do {                                                                  \
  28                 if (!tlb->fullmm)                                             \
  29                         flush_cache_range(vma, vma->vm_start, vma->vm_end);   \
  30         } while(0)
  31
  32 # define tlb_end_vma(tlb, vma)                                                \
  33         do {                                                                  \
  34                 if (!tlb->fullmm)                                             \
  35                         flush_tlb_range(vma, vma->vm_start, vma->vm_end);     \
  36         } while(0)
  37
  38 #endif
  39
  40 #define __tlb_remove_tlb_entry(tlb,pte,addr)    do { } while (0)
  41 #define tlb_flush(tlb)                          flush_tlb_mm((tlb)->mm)
  42
  43 #include <asm-generic/tlb.h>
  44
  45 #define __pte_free_tlb(tlb, pte, address)       pte_free((tlb)->mm, pte)
  46
  47 #endif  /* _XTENSA_TLB_H */