LXR linux/arch/microblaze/include/asm/tlbflush.h

   1/*
   2 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
   3 * Copyright (C) 2008-2009 PetaLogix
   4 * Copyright (C) 2006 Atmark Techno, Inc.
   5 *
   6 * This file is subject to the terms and conditions of the GNU General Public
   7 * License. See the file "COPYING" in the main directory of this archive
   8 * for more details.
   9 */
  10
  11#ifndef _ASM_MICROBLAZE_TLBFLUSH_H
  12#define _ASM_MICROBLAZE_TLBFLUSH_H
  13
  14#ifdef CONFIG_MMU
  15
  16#include <linux/sched.h>
  17#include <linux/threads.h>
  18#include <asm/processor.h>      /* For TASK_SIZE */
  19#include <asm/mmu.h>
  20#include <asm/page.h>
  21#include <asm/pgalloc.h>
  22
  23extern void _tlbie(unsigned long address);
  24extern void _tlbia(void);
  25
  26#define __tlbia()       { preempt_disable(); _tlbia(); preempt_enable(); }
  27#define __tlbie(x)      { _tlbie(x); }
  28
  29static inline void local_flush_tlb_all(void)
  30        { __tlbia(); }
  31static inline void local_flush_tlb_mm(struct mm_struct *mm)
  32        { __tlbia(); }
  33static inline void local_flush_tlb_page(struct vm_area_struct *vma,
  34                                unsigned long vmaddr)
  35        { __tlbie(vmaddr); }
  36static inline void local_flush_tlb_range(struct vm_area_struct *vma,
  37                unsigned long start, unsigned long end)
  38        { __tlbia(); }
  39
  40#define flush_tlb_kernel_range(start, end)      do { } while (0)
  41
  42#define update_mmu_cache(vma, addr, ptep)       do { } while (0)
  43
  44#define flush_tlb_all local_flush_tlb_all
  45#define flush_tlb_mm local_flush_tlb_mm
  46#define flush_tlb_page local_flush_tlb_page
  47#define flush_tlb_range local_flush_tlb_range
  48
  49/*
  50 * This is called in munmap when we have freed up some page-table
  51 * pages.  We don't need to do anything here, there's nothing special
  52 * about our page-table pages.  -- paulus
  53 */
  54static inline void flush_tlb_pgtables(struct mm_struct *mm,
  55        unsigned long start, unsigned long end) { }
  56
  57#else /* CONFIG_MMU */
  58
  59#define flush_tlb()                             BUG()
  60#define flush_tlb_all()                         BUG()
  61#define flush_tlb_mm(mm)                        BUG()
  62#define flush_tlb_page(vma, addr)               BUG()
  63#define flush_tlb_range(mm, start, end)         BUG()
  64#define flush_tlb_pgtables(mm, start, end)      BUG()
  65#define flush_tlb_kernel_range(start, end)      BUG()
  66
  67#endif /* CONFIG_MMU */
  68
  69#endif /* _ASM_MICROBLAZE_TLBFLUSH_H */
  70