arch/microblaze/include/asm/tlbflush.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
   4  * Copyright (C) 2008-2009 PetaLogix
   5  * Copyright (C) 2006 Atmark Techno, Inc.
   6  */
   7
   8 #ifndef _ASM_MICROBLAZE_TLBFLUSH_H
   9 #define _ASM_MICROBLAZE_TLBFLUSH_H
  10
  11 #include <linux/sched.h>
  12 #include <linux/threads.h>
  13 #include <asm/processor.h>      /* For TASK_SIZE */
  14 #include <asm/mmu.h>
  15 #include <asm/page.h>
  16
  17 extern void _tlbie(unsigned long address);
  18 extern void _tlbia(void);
  19
  20 #define __tlbia()       { preempt_disable(); _tlbia(); preempt_enable(); }
  21 #define __tlbie(x)      { _tlbie(x); }
  22
  23 static inline void local_flush_tlb_all(void)
  24         { __tlbia(); }
  25 static inline void local_flush_tlb_mm(struct mm_struct *mm)
  26         { __tlbia(); }
  27 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
  28                                 unsigned long vmaddr)
  29         { __tlbie(vmaddr); }
  30 static inline void local_flush_tlb_range(struct vm_area_struct *vma,
  31                 unsigned long start, unsigned long end)
  32         { __tlbia(); }
  33
  34 #define flush_tlb_kernel_range(start, end)      do { } while (0)
  35
  36 #define update_mmu_cache_range(vmf, vma, addr, ptep, nr) do { } while (0)
  37 #define update_mmu_cache(vma, addr, pte) \
  38         update_mmu_cache_range(NULL, vma, addr, ptep, 1)
  39
  40 #define flush_tlb_all local_flush_tlb_all
  41 #define flush_tlb_mm local_flush_tlb_mm
  42 #define flush_tlb_page local_flush_tlb_page
  43 #define flush_tlb_range local_flush_tlb_range
  44
  45 /*
  46  * This is called in munmap when we have freed up some page-table
  47  * pages.  We don't need to do anything here, there's nothing special
  48  * about our page-table pages.  -- paulus
  49  */
  50 static inline void flush_tlb_pgtables(struct mm_struct *mm,
  51         unsigned long start, unsigned long end) { }
  52
  53 #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */