linux/include/asm-frv/tlbflush.h
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   1/* tlbflush.h: TLB flushing functions
   2 *
   3 * Copyright (C) 2004 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 License
   8 * as published by the Free Software Foundation; either version
   9 * 2 of the License, or (at your option) any later version.
  10 */
  11
  12#ifndef _ASM_TLBFLUSH_H
  13#define _ASM_TLBFLUSH_H
  14
  15#include <linux/mm.h>
  16#include <asm/processor.h>
  17
  18#ifdef CONFIG_MMU
  19
  20#ifndef __ASSEMBLY__
  21extern void asmlinkage __flush_tlb_all(void);
  22extern void asmlinkage __flush_tlb_mm(unsigned long contextid);
  23extern void asmlinkage __flush_tlb_page(unsigned long contextid, unsigned long start);
  24extern void asmlinkage __flush_tlb_range(unsigned long contextid,
  25                                         unsigned long start, unsigned long end);
  26#endif /* !__ASSEMBLY__ */
  27
  28#define flush_tlb_all()                         \
  29do {                                            \
  30        preempt_disable();                      \
  31        __flush_tlb_all();                      \
  32        preempt_enable();                       \
  33} while(0)
  34
  35#define flush_tlb_mm(mm)                        \
  36do {                                            \
  37        preempt_disable();                      \
  38        __flush_tlb_mm((mm)->context.id);       \
  39        preempt_enable();                       \
  40} while(0)
  41
  42#define flush_tlb_range(vma,start,end)                                  \
  43do {                                                                    \
  44        preempt_disable();                                              \
  45        __flush_tlb_range((vma)->vm_mm->context.id, start, end);        \
  46        preempt_enable();                                               \
  47} while(0)
  48
  49#define flush_tlb_page(vma,addr)                                \
  50do {                                                            \
  51        preempt_disable();                                      \
  52        __flush_tlb_page((vma)->vm_mm->context.id, addr);       \
  53        preempt_enable();                                       \
  54} while(0)
  55
  56
  57#define __flush_tlb_global()                    flush_tlb_all()
  58#define flush_tlb()                             flush_tlb_all()
  59#define flush_tlb_kernel_range(start, end)      flush_tlb_all()
  60
  61#else
  62
  63#define flush_tlb()                             BUG()
  64#define flush_tlb_all()                         BUG()
  65#define flush_tlb_mm(mm)                        BUG()
  66#define flush_tlb_page(vma,addr)                BUG()
  67#define flush_tlb_range(mm,start,end)           BUG()
  68#define flush_tlb_kernel_range(start, end)      BUG()
  69
  70#endif
  71
  72
  73#endif /* _ASM_TLBFLUSH_H */
  74