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
  23 extern void _tlbie(unsigned long address);
  24 extern void _tlbia(void);
  25
  26 #define __tlbia()       _tlbia()
  27
  28 static inline void local_flush_tlb_all(void)
  29         { __tlbia(); }
  30 static inline void local_flush_tlb_mm(struct mm_struct *mm)
  31         { __tlbia(); }
  32 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
  33                                 unsigned long vmaddr)
  34         { _tlbie(vmaddr); }
  35 static inline void local_flush_tlb_range(struct vm_area_struct *vma,
  36                 unsigned long start, unsigned long end)
  37         { __tlbia(); }
  38
  39 #define flush_tlb_kernel_range(start, end)      do { } while (0)
  40
  41 #define update_mmu_cache(vma, addr, pte)        do { } while (0)
  42
  43 #define flush_tlb_all local_flush_tlb_all
  44 #define flush_tlb_mm local_flush_tlb_mm
  45 #define flush_tlb_page local_flush_tlb_page
  46 #define flush_tlb_range local_flush_tlb_range
  47
  48 /*
  49  * This is called in munmap when we have freed up some page-table
  50  * pages.  We don't need to do anything here, there's nothing special
  51  * about our page-table pages.  -- paulus
  52  */
  53 static inline void flush_tlb_pgtables(struct mm_struct *mm,
  54         unsigned long start, unsigned long end) { }
  55
  56 #else /* CONFIG_MMU */
  57
  58 #define flush_tlb()                             BUG()
  59 #define flush_tlb_all()                         BUG()
  60 #define flush_tlb_mm(mm)                        BUG()
  61 #define flush_tlb_page(vma, addr)               BUG()
  62 #define flush_tlb_range(mm, start, end)         BUG()
  63 #define flush_tlb_pgtables(mm, start, end)      BUG()
  64 #define flush_tlb_kernel_range(start, end)      BUG()
  65
  66 #endif /* CONFIG_MMU */
  67
  68 #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */