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 #ifdef CONFIG_MMU
  12
  13 #include <linux/sched.h>
  14 #include <linux/threads.h>
  15 #include <asm/processor.h>      /* For TASK_SIZE */
  16 #include <asm/mmu.h>
  17 #include <asm/page.h>
  18 #include <asm/pgalloc.h>
  19
  20 extern void _tlbie(unsigned long address);
  21 extern void _tlbia(void);
  22
  23 #define __tlbia()       { preempt_disable(); _tlbia(); preempt_enable(); }
  24 #define __tlbie(x)      { _tlbie(x); }
  25
  26 static inline void local_flush_tlb_all(void)
  27         { __tlbia(); }
  28 static inline void local_flush_tlb_mm(struct mm_struct *mm)
  29         { __tlbia(); }
  30 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
  31                                 unsigned long vmaddr)
  32         { __tlbie(vmaddr); }
  33 static inline void local_flush_tlb_range(struct vm_area_struct *vma,
  34                 unsigned long start, unsigned long end)
  35         { __tlbia(); }
  36
  37 #define flush_tlb_kernel_range(start, end)      do { } while (0)
  38
  39 #define update_mmu_cache(vma, addr, ptep)       do { } while (0)
  40
  41 #define flush_tlb_all local_flush_tlb_all
  42 #define flush_tlb_mm local_flush_tlb_mm
  43 #define flush_tlb_page local_flush_tlb_page
  44 #define flush_tlb_range local_flush_tlb_range
  45
  46 /*
  47  * This is called in munmap when we have freed up some page-table
  48  * pages.  We don't need to do anything here, there's nothing special
  49  * about our page-table pages.  -- paulus
  50  */
  51 static inline void flush_tlb_pgtables(struct mm_struct *mm,
  52         unsigned long start, unsigned long end) { }
  53
  54 #else /* CONFIG_MMU */
  55
  56 #define flush_tlb()                             BUG()
  57 #define flush_tlb_all()                         BUG()
  58 #define flush_tlb_mm(mm)                        BUG()
  59 #define flush_tlb_page(vma, addr)               BUG()
  60 #define flush_tlb_range(mm, start, end)         BUG()
  61 #define flush_tlb_pgtables(mm, start, end)      BUG()
  62 #define flush_tlb_kernel_range(start, end)      BUG()
  63
  64 #endif /* CONFIG_MMU */
  65
  66 #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */