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Linux/arch/microblaze/include/asm/tlbflush.h

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  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()       { preempt_disable(); _tlbia(); preempt_enable(); }
 27 #define __tlbie(x)      { _tlbie(x); }
 28 
 29 static inline void local_flush_tlb_all(void)
 30         { __tlbia(); }
 31 static inline void local_flush_tlb_mm(struct mm_struct *mm)
 32         { __tlbia(); }
 33 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
 34                                 unsigned long vmaddr)
 35         { __tlbie(vmaddr); }
 36 static 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  */
 54 static 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 

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