home *** CD-ROM | disk | FTP | other *** search
/ Mac Easy 2010 May / Mac Life Ubuntu.iso / casper / filesystem.squashfs / usr / src / linux-headers-2.6.28-15 / include / asm-mn10300 / tlbflush.h < prev    next >
Encoding:
C/C++ Source or Header  |  2008-12-24  |  2.1 KB  |  81 lines
  1. /* MN10300 TLB flushing functions
  2.  *
  3.  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
  4.  * Written by David Howells (dhowells@redhat.com)
  5.  *
  6.  * This program is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU General Public Licence
  8.  * as published by the Free Software Foundation; either version
  9.  * 2 of the Licence, or (at your option) any later version.
  10.  */
  11. #ifndef _ASM_TLBFLUSH_H
  12. #define _ASM_TLBFLUSH_H
  13.  
  14. #include <asm/processor.h>
  15.  
  16. #define __flush_tlb()                        \
  17. do {                                \
  18.     int w;                            \
  19.     __asm__ __volatile__                    \
  20.         ("    mov %1,%0        \n"        \
  21.          "    or %2,%0        \n"        \
  22.          "    mov %0,%1        \n"        \
  23.          : "=d"(w)                    \
  24.          : "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV)    \
  25.          : "memory"                    \
  26.          );                        \
  27. } while (0)
  28.  
  29. #define __flush_tlb_all() __flush_tlb()
  30. #define __flush_tlb_one(addr) __flush_tlb()
  31.  
  32.  
  33. /*
  34.  * TLB flushing:
  35.  *
  36.  *  - flush_tlb() flushes the current mm struct TLBs
  37.  *  - flush_tlb_all() flushes all processes TLBs
  38.  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
  39.  *  - flush_tlb_page(vma, vmaddr) flushes one page
  40.  *  - flush_tlb_range(mm, start, end) flushes a range of pages
  41.  *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
  42.  */
  43. #define flush_tlb_all()                \
  44. do {                        \
  45.     preempt_disable();            \
  46.     __flush_tlb_all();            \
  47.     preempt_enable();            \
  48. } while (0)
  49.  
  50. #define flush_tlb_mm(mm)            \
  51. do {                        \
  52.     preempt_disable();            \
  53.     __flush_tlb_all();            \
  54.     preempt_enable();            \
  55. } while (0)
  56.  
  57. #define flush_tlb_range(vma, start, end)            \
  58. do {                                \
  59.     unsigned long __s __attribute__((unused)) = (start);    \
  60.     unsigned long __e __attribute__((unused)) = (end);    \
  61.     preempt_disable();                    \
  62.     __flush_tlb_all();                    \
  63.     preempt_enable();                    \
  64. } while (0)
  65.  
  66.  
  67. #define __flush_tlb_global()            flush_tlb_all()
  68. #define flush_tlb()                flush_tlb_all()
  69. #define flush_tlb_kernel_range(start, end)            \
  70. do {                                \
  71.     unsigned long __s __attribute__((unused)) = (start);    \
  72.     unsigned long __e __attribute__((unused)) = (end);    \
  73.     flush_tlb_all();                    \
  74. } while (0)
  75.  
  76. extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
  77.  
  78. #define flush_tlb_pgtables(mm, start, end)    do {} while (0)
  79.  
  80. #endif /* _ASM_TLBFLUSH_H */
  81.